ChangeLog 198 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606160716081609161016111612161316141615161616171618161916201621162216231624162516261627162816291630163116321633163416351636163716381639164016411642164316441645164616471648164916501651165216531654165516561657165816591660166116621663166416651666166716681669167016711672167316741675167616771678167916801681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750175117521753175417551756175717581759176017611762176317641765176617671768176917701771177217731774177517761777177817791780178117821783178417851786178717881789179017911792179317941795179617971798179918001801180218031804180518061807180818091810181118121813181418151816181718181819182018211822182318241825182618271828182918301831183218331834183518361837183818391840184118421843184418451846184718481849185018511852185318541855185618571858185918601861186218631864186518661867186818691870187118721873187418751876187718781879188018811882188318841885188618871888188918901891189218931894189518961897189818991900190119021903190419051906190719081909191019111912191319141915191619171918191919201921192219231924192519261927192819291930193119321933193419351936193719381939194019411942194319441945194619471948194919501951195219531954195519561957195819591960196119621963196419651966196719681969197019711972197319741975197619771978197919801981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026202720282029203020312032203320342035203620372038203920402041204220432044204520462047204820492050205120522053205420552056205720582059206020612062206320642065206620672068206920702071207220732074207520762077207820792080208120822083208420852086208720882089209020912092209320942095209620972098209921002101210221032104210521062107210821092110211121122113211421152116211721182119212021212122212321242125212621272128212921302131213221332134213521362137213821392140214121422143214421452146214721482149215021512152215321542155215621572158215921602161216221632164216521662167216821692170217121722173217421752176217721782179218021812182218321842185218621872188218921902191219221932194219521962197219821992200220122022203220422052206220722082209221022112212221322142215221622172218221922202221222222232224222522262227222822292230223122322233223422352236223722382239224022412242224322442245224622472248224922502251225222532254225522562257225822592260226122622263226422652266226722682269227022712272227322742275227622772278227922802281228222832284228522862287228822892290229122922293229422952296229722982299230023012302230323042305230623072308230923102311231223132314231523162317231823192320232123222323232423252326232723282329233023312332233323342335233623372338233923402341234223432344234523462347234823492350235123522353235423552356235723582359236023612362236323642365236623672368236923702371237223732374237523762377237823792380238123822383238423852386238723882389239023912392239323942395239623972398239924002401240224032404240524062407240824092410241124122413241424152416241724182419242024212422242324242425242624272428242924302431243224332434243524362437243824392440244124422443244424452446244724482449245024512452245324542455245624572458245924602461246224632464246524662467246824692470247124722473247424752476247724782479248024812482248324842485248624872488248924902491249224932494249524962497249824992500250125022503250425052506250725082509251025112512251325142515251625172518251925202521252225232524252525262527252825292530253125322533253425352536253725382539254025412542254325442545254625472548254925502551255225532554255525562557255825592560256125622563256425652566256725682569257025712572257325742575257625772578257925802581258225832584258525862587258825892590259125922593259425952596259725982599260026012602260326042605260626072608260926102611261226132614261526162617261826192620262126222623262426252626262726282629263026312632263326342635263626372638263926402641264226432644264526462647264826492650265126522653265426552656265726582659266026612662266326642665266626672668266926702671267226732674267526762677267826792680268126822683268426852686268726882689269026912692269326942695269626972698269927002701270227032704270527062707270827092710271127122713271427152716271727182719272027212722272327242725272627272728272927302731273227332734273527362737273827392740274127422743274427452746274727482749275027512752275327542755275627572758275927602761276227632764276527662767276827692770277127722773277427752776277727782779278027812782278327842785278627872788278927902791279227932794279527962797279827992800280128022803280428052806280728082809281028112812281328142815281628172818281928202821282228232824282528262827282828292830283128322833283428352836283728382839284028412842284328442845284628472848284928502851285228532854285528562857285828592860286128622863286428652866286728682869287028712872287328742875287628772878287928802881288228832884288528862887288828892890289128922893289428952896289728982899290029012902290329042905290629072908290929102911291229132914291529162917291829192920292129222923292429252926292729282929293029312932293329342935293629372938293929402941294229432944294529462947294829492950295129522953295429552956295729582959296029612962296329642965296629672968296929702971297229732974297529762977297829792980298129822983298429852986298729882989299029912992299329942995299629972998299930003001300230033004300530063007300830093010301130123013301430153016301730183019302030213022302330243025302630273028302930303031303230333034303530363037303830393040304130423043304430453046304730483049305030513052305330543055305630573058305930603061306230633064306530663067306830693070307130723073307430753076307730783079308030813082308330843085308630873088308930903091309230933094309530963097309830993100310131023103310431053106310731083109311031113112311331143115311631173118311931203121312231233124312531263127312831293130313131323133313431353136313731383139314031413142314331443145314631473148314931503151315231533154315531563157315831593160316131623163316431653166316731683169317031713172317331743175317631773178317931803181318231833184318531863187318831893190319131923193319431953196319731983199320032013202320332043205320632073208320932103211321232133214321532163217321832193220322132223223322432253226322732283229323032313232323332343235323632373238323932403241324232433244324532463247324832493250325132523253325432553256325732583259326032613262326332643265326632673268326932703271327232733274327532763277327832793280328132823283328432853286328732883289329032913292329332943295329632973298329933003301330233033304330533063307330833093310331133123313331433153316331733183319332033213322332333243325332633273328332933303331333233333334333533363337333833393340334133423343334433453346334733483349335033513352335333543355335633573358335933603361336233633364336533663367336833693370337133723373337433753376337733783379338033813382338333843385338633873388338933903391339233933394339533963397339833993400340134023403340434053406340734083409341034113412341334143415341634173418341934203421342234233424342534263427342834293430343134323433343434353436343734383439344034413442344334443445344634473448344934503451345234533454345534563457345834593460346134623463346434653466346734683469347034713472347334743475347634773478347934803481348234833484348534863487348834893490349134923493349434953496349734983499350035013502350335043505350635073508350935103511351235133514351535163517351835193520352135223523352435253526352735283529353035313532353335343535353635373538353935403541354235433544354535463547354835493550355135523553355435553556355735583559356035613562356335643565356635673568356935703571357235733574357535763577357835793580358135823583358435853586358735883589359035913592359335943595359635973598359936003601360236033604360536063607360836093610361136123613361436153616361736183619362036213622362336243625362636273628362936303631363236333634363536363637363836393640364136423643364436453646364736483649365036513652365336543655365636573658365936603661366236633664366536663667366836693670367136723673367436753676367736783679368036813682368336843685368636873688368936903691369236933694369536963697369836993700370137023703370437053706370737083709371037113712371337143715371637173718371937203721372237233724372537263727372837293730373137323733373437353736373737383739374037413742374337443745374637473748374937503751375237533754375537563757375837593760376137623763376437653766376737683769377037713772377337743775377637773778377937803781378237833784378537863787378837893790379137923793379437953796379737983799380038013802380338043805380638073808380938103811381238133814381538163817381838193820382138223823382438253826382738283829383038313832383338343835383638373838383938403841384238433844384538463847384838493850385138523853385438553856385738583859386038613862386338643865386638673868386938703871387238733874387538763877387838793880388138823883388438853886388738883889389038913892389338943895389638973898389939003901390239033904390539063907390839093910391139123913391439153916391739183919392039213922392339243925392639273928392939303931393239333934393539363937393839393940394139423943394439453946394739483949
  1. Changes in version 0.1.2.7-alpha - 2007-01-26
  2. o Major bugfixes (rate limiting):
  3. - Servers decline directory requests much more aggressively when
  4. they're low on bandwidth. Otherwise they end up queueing more and
  5. more directory responses, which can't be good for latency.
  6. - But never refuse directory requests from local addresses.
  7. - Be willing to read or write on local connections (e.g. controller
  8. connections) even when the global rate limiting buckets are empty.
  9. - If our system clock jumps back in time, don't publish a negative
  10. uptime in the descriptor. Also, don't let the global rate limiting
  11. buckets go absurdly negative.
  12. - Flush local controller connection buffers periodically as we're
  13. writing to them, so we avoid queueing 4+ megabytes of data before
  14. trying to flush.
  15. o Major bugfixes (other):
  16. - Fix a crash bug in the presence of DNS hijacking (reported by Andrew
  17. Del Vecchio).
  18. - Previously, we would cache up to 16 old networkstatus documents
  19. indefinitely, if they came from nontrusted authorities. Now we
  20. discard them if they are more than 10 days old.
  21. - Detect and reject malformed DNS responses containing circular
  22. pointer loops.
  23. - Fix a memory leak when sending a 503 response for a networkstatus
  24. request.
  25. - If we're not marking exits as guards, ignore exit bandwidth
  26. when we're deciding the required bandwidth to become a guard.
  27. o Minor bugfixes:
  28. - When computing clock skew from directory HTTP headers, consider what
  29. time it was when we finished asking for the directory, not what
  30. time it is now.
  31. - Add some defensive programming to eventdns.c in an attempt to catch
  32. possible memory-stomping bugs.
  33. - Fix crash with "tor --list-fingerprint" (reported by seeess).
  34. - Expire socks connections if they spend too long waiting for the
  35. handshake to finish. Previously we would let them sit around for
  36. days, if the connecting application didn't close them either.
  37. - Stop using C functions that OpenBSD's linker doesn't like.
  38. - Detect and reject DNS replies containing IPv4 or IPv6 records with
  39. an incorrect number of bytes. (Previously, we would ignore the
  40. extra bytes.)
  41. - Fix as-yet-unused reverse IPv6 lookup code so it sends nybbles
  42. in the correct order.
  43. - Free memory held in recently-completed DNS lookup attempts on exit.
  44. This was not a memory leak, but may have been hiding memory leaks.
  45. - Don't launch requests for descriptors unless we have networkstatuses
  46. from at least half of the authorities. This delays the first
  47. download slightly under pathological circumstances, but can prevent
  48. us from downloading a bunch of descriptors we don't need.
  49. - Do not log IPs with TLS failures for incoming TLS
  50. connections. (Fixes bug 382.)
  51. o Minor features:
  52. - Create a new file ReleaseNotes which was the old ChangeLog. The
  53. new ChangeLog file now includes the summaries for even development
  54. versions.
  55. - Check for addresses with invalid characters at the exit as well
  56. as at the client, and warn less verbosely when they fail. You can
  57. override this by setting ServerDNSAllowNonRFC953Addresses to 1.
  58. - Adapt a patch from goodell to let the contrib/exitlist script
  59. take arguments rather than require direct editing.
  60. - Inform the server operator when we decide not to advertise a
  61. DirPort due to AccountingMax enabled or a low BandwidthRate. It
  62. was confusing Zax, so now we're hopefully more helpful.
  63. o Minor features (controller):
  64. - Track reasons for OR connection failure; make these reasons
  65. available via the controller interface. (Patch from Mike Perry.)
  66. - Add a SOCKS_BAD_HOSTNAME client status event so controllers
  67. can learn when clients are sending malformed hostnames to Tor.
  68. - Clean up documentation for controller status events.
  69. Changes in version 0.1.2.6-alpha - 2007-01-09
  70. o Major bugfixes:
  71. - Fix an assert error introduced in 0.1.2.5-alpha: if a single TLS
  72. connection handles more than 4 gigs in either direction, we crash.
  73. - Fix an assert error introduced in 0.1.2.5-alpha: if we're an
  74. advertised exit node, somebody might try to exit from us when
  75. we're bootstrapping and before we've built your descriptor yet.
  76. Refuse the connection rather than crashing.
  77. o Minor bugfixes:
  78. - Warn if we (as a server) find that we've resolved an address that we
  79. weren't planning to resolve.
  80. - Warn that using select() on any libevent version before 1.1 will be
  81. unnecessarily slow (even for select()).
  82. - Flush ERR-level controller status events just like we currently
  83. flush ERR-level log events, so that a Tor shutdown doesn't prevent
  84. the controller from learning about current events.
  85. o Minor features (more controller status events):
  86. - Implement EXTERNAL_ADDRESS server status event so controllers can
  87. learn when our address changes.
  88. - Implement BAD_SERVER_DESCRIPTOR server status event so controllers
  89. can learn when directories reject our descriptor.
  90. - Implement SOCKS_UNKNOWN_PROTOCOL client status event so controllers
  91. can learn when a client application is speaking a non-socks protocol
  92. to our SocksPort.
  93. - Implement DANGEROUS_SOCKS client status event so controllers
  94. can learn when a client application is leaking DNS addresses.
  95. - Implement BUG general status event so controllers can learn when
  96. Tor is unhappy about its internal invariants.
  97. - Implement CLOCK_SKEW general status event so controllers can learn
  98. when Tor thinks the system clock is set incorrectly.
  99. - Implement GOOD_SERVER_DESCRIPTOR and ACCEPTED_SERVER_DESCRIPTOR
  100. server status events so controllers can learn when their descriptors
  101. are accepted by a directory.
  102. - Implement CHECKING_REACHABILITY and REACHABILITY_{SUCCEEDED|FAILED}
  103. server status events so controllers can learn about Tor's progress in
  104. deciding whether it's reachable from the outside.
  105. - Implement BAD_LIBEVENT general status event so controllers can learn
  106. when we have a version/method combination in libevent that needs to
  107. be changed.
  108. - Implement NAMESERVER_STATUS, NAMESERVER_ALL_DOWN, DNS_HIJACKED,
  109. and DNS_USELESS server status events so controllers can learn
  110. about changes to DNS server status.
  111. o Minor features (directory):
  112. - Authorities no longer recommend exits as guards if this would shift
  113. too much load to the exit nodes.
  114. Changes in version 0.1.2.5-alpha - 2007-01-06
  115. o Major features:
  116. - Enable write limiting as well as read limiting. Now we sacrifice
  117. capacity if we're pushing out lots of directory traffic, rather
  118. than overrunning the user's intended bandwidth limits.
  119. - Include TLS overhead when counting bandwidth usage; previously, we
  120. would count only the bytes sent over TLS, but not the bytes used
  121. to send them.
  122. - Support running the Tor service with a torrc not in the same
  123. directory as tor.exe and default to using the torrc located in
  124. the %appdata%\Tor\ of the user who installed the service. Patch
  125. from Matt Edman.
  126. - Servers now check for the case when common DNS requests are going to
  127. wildcarded addresses (i.e. all getting the same answer), and change
  128. their exit policy to reject *:* if it's happening.
  129. - Implement BEGIN_DIR cells, so we can connect to the directory
  130. server via TLS to do encrypted directory requests rather than
  131. plaintext. Enable via the TunnelDirConns and PreferTunneledDirConns
  132. config options if you like.
  133. o Minor features (config and docs):
  134. - Start using the state file to store bandwidth accounting data:
  135. the bw_accounting file is now obsolete. We'll keep generating it
  136. for a while for people who are still using 0.1.2.4-alpha.
  137. - Try to batch changes to the state file so that we do as few
  138. disk writes as possible while still storing important things in
  139. a timely fashion.
  140. - The state file and the bw_accounting file get saved less often when
  141. the AvoidDiskWrites config option is set.
  142. - Make PIDFile work on Windows (untested).
  143. - Add internal descriptions for a bunch of configuration options:
  144. accessible via controller interface and in comments in saved
  145. options files.
  146. - Reject *:563 (NNTPS) in the default exit policy. We already reject
  147. NNTP by default, so this seems like a sensible addition.
  148. - Clients now reject hostnames with invalid characters. This should
  149. avoid some inadvertent info leaks. Add an option
  150. AllowNonRFC953Hostnames to disable this behavior, in case somebody
  151. is running a private network with hosts called @, !, and #.
  152. - Add a maintainer script to tell us which options are missing
  153. documentation: "make check-docs".
  154. - Add a new address-spec.txt document to describe our special-case
  155. addresses: .exit, .onion, and .noconnnect.
  156. o Minor features (DNS):
  157. - Ongoing work on eventdns infrastructure: now it has dns server
  158. and ipv6 support. One day Tor will make use of it.
  159. - Add client-side caching for reverse DNS lookups.
  160. - Add support to tor-resolve tool for reverse lookups and SOCKS5.
  161. - When we change nameservers or IP addresses, reset and re-launch
  162. our tests for DNS hijacking.
  163. o Minor features (directory):
  164. - Authorities now specify server versions in networkstatus. This adds
  165. about 2% to the side of compressed networkstatus docs, and allows
  166. clients to tell which servers support BEGIN_DIR and which don't.
  167. The implementation is forward-compatible with a proposed future
  168. protocol version scheme not tied to Tor versions.
  169. - DirServer configuration lines now have an orport= option so
  170. clients can open encrypted tunnels to the authorities without
  171. having downloaded their descriptors yet. Enabled for moria1,
  172. moria2, tor26, and lefkada now in the default configuration.
  173. - Directory servers are more willing to send a 503 "busy" if they
  174. are near their write limit, especially for v1 directory requests.
  175. Now they can use their limited bandwidth for actual Tor traffic.
  176. - Clients track responses with status 503 from dirservers. After a
  177. dirserver has given us a 503, we try not to use it until an hour has
  178. gone by, or until we have no dirservers that haven't given us a 503.
  179. - When we get a 503 from a directory, and we're not a server, we don't
  180. count the failure against the total number of failures allowed
  181. for the thing we're trying to download.
  182. - Report X-Your-Address-Is correctly from tunneled directory
  183. connections; don't report X-Your-Address-Is when it's an internal
  184. address; and never believe reported remote addresses when they're
  185. internal.
  186. - Protect against an unlikely DoS attack on directory servers.
  187. - Add a BadDirectory flag to network status docs so that authorities
  188. can (eventually) tell clients about caches they believe to be
  189. broken.
  190. o Minor features (controller):
  191. - Have GETINFO dir/status/* work on hosts with DirPort disabled.
  192. - Reimplement GETINFO so that info/names stays in sync with the
  193. actual keys.
  194. - Implement "GETINFO fingerprint".
  195. - Implement "SETEVENTS GUARD" so controllers can get updates on
  196. entry guard status as it changes.
  197. o Minor features (clean up obsolete pieces):
  198. - Remove some options that have been deprecated since at least
  199. 0.1.0.x: AccountingMaxKB, LogFile, DebugLogFile, LogLevel, and
  200. SysLog. Use AccountingMax instead of AccountingMaxKB, and use Log
  201. to set log options.
  202. - We no longer look for identity and onion keys in "identity.key" and
  203. "onion.key" -- these were replaced by secret_id_key and
  204. secret_onion_key in 0.0.8pre1.
  205. - We no longer require unrecognized directory entries to be
  206. preceded by "opt".
  207. o Major bugfixes (security):
  208. - Stop sending the HttpProxyAuthenticator string to directory
  209. servers when directory connections are tunnelled through Tor.
  210. - Clients no longer store bandwidth history in the state file.
  211. - Do not log introduction points for hidden services if SafeLogging
  212. is set.
  213. - When generating bandwidth history, round down to the nearest
  214. 1k. When storing accounting data, round up to the nearest 1k.
  215. - When we're running as a server, remember when we last rotated onion
  216. keys, so that we will rotate keys once they're a week old even if
  217. we never stay up for a week ourselves.
  218. o Major bugfixes (other):
  219. - Fix a longstanding bug in eventdns that prevented the count of
  220. timed-out resolves from ever being reset. This bug caused us to
  221. give up on a nameserver the third time it timed out, and try it
  222. 10 seconds later... and to give up on it every time it timed out
  223. after that.
  224. - Take out the '5 second' timeout from the connection retry
  225. schedule. Now the first connect attempt will wait a full 10
  226. seconds before switching to a new circuit. Perhaps this will help
  227. a lot. Based on observations from Mike Perry.
  228. - Fix a bug on the Windows implementation of tor_mmap_file() that
  229. would prevent the cached-routers file from ever loading. Reported
  230. by John Kimble.
  231. o Minor bugfixes:
  232. - Fix an assert failure when a directory authority sets
  233. AuthDirRejectUnlisted and then receives a descriptor from an
  234. unlisted router. Reported by seeess.
  235. - Avoid a double-free when parsing malformed DirServer lines.
  236. - Fix a bug when a BSD-style PF socket is first used. Patch from
  237. Fabian Keil.
  238. - Fix a bug in 0.1.2.2-alpha that prevented clients from asking
  239. to resolve an address at a given exit node even when they ask for
  240. it by name.
  241. - Servers no longer ever list themselves in their "family" line,
  242. even if configured to do so. This makes it easier to configure
  243. family lists conveniently.
  244. - When running as a server, don't fall back to 127.0.0.1 when no
  245. nameservers are configured in /etc/resolv.conf; instead, make the
  246. user fix resolv.conf or specify nameservers explicitly. (Resolves
  247. bug 363.)
  248. - Stop accepting certain malformed ports in configured exit policies.
  249. - Don't re-write the fingerprint file every restart, unless it has
  250. changed.
  251. - Stop warning when a single nameserver fails: only warn when _all_ of
  252. our nameservers have failed. Also, when we only have one nameserver,
  253. raise the threshold for deciding that the nameserver is dead.
  254. - Directory authorities now only decide that routers are reachable
  255. if their identity keys are as expected.
  256. - When the user uses bad syntax in the Log config line, stop
  257. suggesting other bad syntax as a replacement.
  258. - Correctly detect ipv6 DNS capability on OpenBSD.
  259. o Minor bugfixes (controller):
  260. - Report the circuit number correctly in STREAM CLOSED events. Bug
  261. reported by Mike Perry.
  262. - Do not report bizarre values for results of accounting GETINFOs
  263. when the last second's write or read exceeds the allotted bandwidth.
  264. - Report "unrecognized key" rather than an empty string when the
  265. controller tries to fetch a networkstatus that doesn't exist.
  266. Changes in version 0.1.1.26 - 2006-12-14
  267. o Security bugfixes:
  268. - Stop sending the HttpProxyAuthenticator string to directory
  269. servers when directory connections are tunnelled through Tor.
  270. - Clients no longer store bandwidth history in the state file.
  271. - Do not log introduction points for hidden services if SafeLogging
  272. is set.
  273. o Minor bugfixes:
  274. - Fix an assert failure when a directory authority sets
  275. AuthDirRejectUnlisted and then receives a descriptor from an
  276. unlisted router (reported by seeess).
  277. Changes in version 0.1.2.4-alpha - 2006-12-03
  278. o Major features:
  279. - Add support for using natd; this allows FreeBSDs earlier than
  280. 5.1.2 to have ipfw send connections through Tor without using
  281. SOCKS. (Patch from Zajcev Evgeny with tweaks from tup.)
  282. o Minor features:
  283. - Make all connections to addresses of the form ".noconnect"
  284. immediately get closed. This lets application/controller combos
  285. successfully test whether they're talking to the same Tor by
  286. watching for STREAM events.
  287. - Make cross.sh cross-compilation script work even when autogen.sh
  288. hasn't been run. (Patch from Michael Mohr.)
  289. - Statistics dumped by -USR2 now include a breakdown of public key
  290. operations, for profiling.
  291. o Major bugfixes:
  292. - Fix a major leak when directory authorities parse their
  293. approved-routers list, a minor memory leak when we fail to pick
  294. an exit node, and a few rare leaks on errors.
  295. - Handle TransPort connections even when the server sends data before
  296. the client sends data. Previously, the connection would just hang
  297. until the client sent data. (Patch from tup based on patch from
  298. Zajcev Evgeny.)
  299. - Avoid assert failure when our cached-routers file is empty on
  300. startup.
  301. o Minor bugfixes:
  302. - Don't log spurious warnings when we see a circuit close reason we
  303. don't recognize; it's probably just from a newer version of Tor.
  304. - Have directory authorities allow larger amounts of drift in uptime
  305. without replacing the server descriptor: previously, a server that
  306. restarted every 30 minutes could have 48 "interesting" descriptors
  307. per day.
  308. - Start linking to the Tor specification and Tor reference manual
  309. correctly in the Windows installer.
  310. - Add Vidalia to the OS X uninstaller script, so when we uninstall
  311. Tor/Privoxy we also uninstall Vidalia.
  312. - Resume building on Irix64, and fix a lot of warnings from its
  313. MIPSpro C compiler.
  314. - Don't corrupt last_guessed_ip in router_new_address_suggestion()
  315. when we're running as a client.
  316. Changes in version 0.1.1.25 - 2006-11-04
  317. o Major bugfixes:
  318. - When a client asks us to resolve (rather than connect to)
  319. an address, and we have a cached answer, give them the cached
  320. answer. Previously, we would give them no answer at all.
  321. - We were building exactly the wrong circuits when we predict
  322. hidden service requirements, meaning Tor would have to build all
  323. its circuits on demand.
  324. - If none of our live entry guards have a high uptime, but we
  325. require a guard with a high uptime, try adding a new guard before
  326. we give up on the requirement. This patch should make long-lived
  327. connections more stable on average.
  328. - When testing reachability of our DirPort, don't launch new
  329. tests when there's already one in progress -- unreachable
  330. servers were stacking up dozens of testing streams.
  331. o Security bugfixes:
  332. - When the user sends a NEWNYM signal, clear the client-side DNS
  333. cache too. Otherwise we continue to act on previous information.
  334. o Minor bugfixes:
  335. - Avoid a memory corruption bug when creating a hash table for
  336. the first time.
  337. - Avoid possibility of controller-triggered crash when misusing
  338. certain commands from a v0 controller on platforms that do not
  339. handle printf("%s",NULL) gracefully.
  340. - Avoid infinite loop on unexpected controller input.
  341. - Don't log spurious warnings when we see a circuit close reason we
  342. don't recognize; it's probably just from a newer version of Tor.
  343. - Add Vidalia to the OS X uninstaller script, so when we uninstall
  344. Tor/Privoxy we also uninstall Vidalia.
  345. Changes in version 0.1.2.3-alpha - 2006-10-29
  346. o Minor features:
  347. - Prepare for servers to publish descriptors less often: never
  348. discard a descriptor simply for being too old until either it is
  349. recommended by no authorities, or until we get a better one for
  350. the same router. Make caches consider retaining old recommended
  351. routers for even longer.
  352. - If most authorities set a BadExit flag for a server, clients
  353. don't think of it as a general-purpose exit. Clients only consider
  354. authorities that advertise themselves as listing bad exits.
  355. - Directory servers now provide 'Pragma: no-cache' and 'Expires'
  356. headers for content, so that we can work better in the presence of
  357. caching HTTP proxies.
  358. - Allow authorities to list nodes as bad exits by fingerprint or by
  359. address.
  360. o Minor features, controller:
  361. - Add a REASON field to CIRC events; for backward compatibility, this
  362. field is sent only to controllers that have enabled the extended
  363. event format. Also, add additional reason codes to explain why
  364. a given circuit has been destroyed or truncated. (Patches from
  365. Mike Perry)
  366. - Add a REMOTE_REASON field to extended CIRC events to tell the
  367. controller about why a remote OR told us to close a circuit.
  368. - Stream events also now have REASON and REMOTE_REASON fields,
  369. working much like those for circuit events.
  370. - There's now a GETINFO ns/... field so that controllers can ask Tor
  371. about the current status of a router.
  372. - A new event type "NS" to inform a controller when our opinion of
  373. a router's status has changed.
  374. - Add a GETINFO events/names and GETINFO features/names so controllers
  375. can tell which events and features are supported.
  376. - A new CLEARDNSCACHE signal to allow controllers to clear the
  377. client-side DNS cache without expiring circuits.
  378. o Security bugfixes:
  379. - When the user sends a NEWNYM signal, clear the client-side DNS
  380. cache too. Otherwise we continue to act on previous information.
  381. o Minor bugfixes:
  382. - Avoid sending junk to controllers or segfaulting when a controller
  383. uses EVENT_NEW_DESC with verbose nicknames.
  384. - Stop triggering asserts if the controller tries to extend hidden
  385. service circuits (reported by mwenge).
  386. - Avoid infinite loop on unexpected controller input.
  387. - When the controller does a "GETINFO network-status", tell it
  388. about even those routers whose descriptors are very old, and use
  389. long nicknames where appropriate.
  390. - Change NT service functions to be loaded on demand. This lets us
  391. build with MinGW without breaking Tor for Windows 98 users.
  392. - Do DirPort reachability tests less often, since a single test
  393. chews through many circuits before giving up.
  394. - In the hidden service example in torrc.sample, stop recommending
  395. esoteric and discouraged hidden service options.
  396. - When stopping an NT service, wait up to 10 sec for it to actually
  397. stop. (Patch from Matt Edman; resolves bug 295.)
  398. - Fix handling of verbose nicknames with ORCONN controller events:
  399. make them show up exactly when requested, rather than exactly when
  400. not requested.
  401. - When reporting verbose nicknames in entry_guards_getinfo(), avoid
  402. printing a duplicate "$" in the keys we send (reported by mwenge).
  403. - Correctly set maximum connection limit on Cygwin. (This time
  404. for sure!)
  405. - Try to detect Windows correctly when cross-compiling.
  406. - Detect the size of the routers file correctly even if it is
  407. corrupted (on systems without mmap) or not page-aligned (on systems
  408. with mmap). This bug was harmless.
  409. - Sometimes we didn't bother sending a RELAY_END cell when an attempt
  410. to open a stream fails; now we do in more cases. This should
  411. make clients able to find a good exit faster in some cases, since
  412. unhandleable requests will now get an error rather than timing out.
  413. - Resolve two memory leaks when rebuilding the on-disk router cache
  414. (reported by fookoowa).
  415. - Clean up minor code warnings suggested by the MIPSpro C compiler,
  416. and reported by some Centos users.
  417. - Controller signals now work on non-Unix platforms that don't define
  418. SIGUSR1 and SIGUSR2 the way we expect.
  419. - Patch from Michael Mohr to contrib/cross.sh, so it checks more
  420. values before failing, and always enables eventdns.
  421. - Libevent-1.2 exports, but does not define in its headers, strlcpy.
  422. Try to fix this in configure.in by checking for most functions
  423. before we check for libevent.
  424. Changes in version 0.1.2.2-alpha - 2006-10-07
  425. o Major features:
  426. - Make our async eventdns library on-by-default for Tor servers,
  427. and plan to deprecate the separate dnsworker threads.
  428. - Add server-side support for "reverse" DNS lookups (using PTR
  429. records so clients can determine the canonical hostname for a given
  430. IPv4 address). Only supported by servers using eventdns; servers
  431. now announce in their descriptors whether they support eventdns.
  432. - Specify and implement client-side SOCKS5 interface for reverse DNS
  433. lookups (see doc/socks-extensions.txt).
  434. - Add a BEGIN_DIR relay cell type for an easier in-protocol way to
  435. connect to directory servers through Tor. Previously, clients needed
  436. to find Tor exits to make private connections to directory servers.
  437. - Avoid choosing Exit nodes for entry or middle hops when the
  438. total bandwidth available from non-Exit nodes is much higher than
  439. the total bandwidth available from Exit nodes.
  440. - Workaround for name servers (like Earthlink's) that hijack failing
  441. DNS requests and replace the no-such-server answer with a "helpful"
  442. redirect to an advertising-driven search portal. Also work around
  443. DNS hijackers who "helpfully" decline to hijack known-invalid
  444. RFC2606 addresses. Config option "ServerDNSDetectHijacking 0"
  445. lets you turn it off.
  446. - Send out a burst of long-range padding cells once we've established
  447. that we're reachable. Spread them over 4 circuits, so hopefully
  448. a few will be fast. This exercises our bandwidth and bootstraps
  449. us into the directory more quickly.
  450. o New/improved config options:
  451. - Add new config option "ResolvConf" to let the server operator
  452. choose an alternate resolve.conf file when using eventdns.
  453. - Add an "EnforceDistinctSubnets" option to control our "exclude
  454. servers on the same /16" behavior. It's still on by default; this
  455. is mostly for people who want to operate private test networks with
  456. all the machines on the same subnet.
  457. - If one of our entry guards is on the ExcludeNodes list, or the
  458. directory authorities don't think it's a good guard, treat it as
  459. if it were unlisted: stop using it as a guard, and throw it off
  460. the guards list if it stays that way for a long time.
  461. - Allow directory authorities to be marked separately as authorities
  462. for the v1 directory protocol, the v2 directory protocol, and
  463. as hidden service directories, to make it easier to retire old
  464. authorities. V1 authorities should set "HSAuthoritativeDir 1"
  465. to continue being hidden service authorities too.
  466. - Remove 8888 as a LongLivedPort, and add 6697 (IRCS).
  467. o Minor features, controller:
  468. - Fix CIRC controller events so that controllers can learn the
  469. identity digests of non-Named servers used in circuit paths.
  470. - Let controllers ask for more useful identifiers for servers. Instead
  471. of learning identity digests for un-Named servers and nicknames
  472. for Named servers, the new identifiers include digest, nickname,
  473. and indication of Named status. Off by default; see control-spec.txt
  474. for more information.
  475. - Add a "getinfo address" controller command so it can display Tor's
  476. best guess to the user.
  477. - New controller event to alert the controller when our server
  478. descriptor has changed.
  479. - Give more meaningful errors on controller authentication failure.
  480. o Minor features, other:
  481. - When asked to resolve a hostname, don't use non-exit servers unless
  482. requested to do so. This allows servers with broken DNS to be
  483. useful to the network.
  484. - Divide eventdns log messages into warn and info messages.
  485. - Reserve the nickname "Unnamed" for routers that can't pick
  486. a hostname: any router can call itself Unnamed; directory
  487. authorities will never allocate Unnamed to any particular router;
  488. clients won't believe that any router is the canonical Unnamed.
  489. - Only include function names in log messages for info/debug messages.
  490. For notice/warn/err, the content of the message should be clear on
  491. its own, and printing the function name only confuses users.
  492. - Avoid some false positives during reachability testing: don't try
  493. to test via a server that's on the same /24 as us.
  494. - If we fail to build a circuit to an intended enclave, and it's
  495. not mandatory that we use that enclave, stop wanting it.
  496. - When eventdns is enabled, allow multithreaded builds on NetBSD and
  497. OpenBSD. (We had previously disabled threads on these platforms
  498. because they didn't have working thread-safe resolver functions.)
  499. o Major bugfixes, anonymity/security:
  500. - If a client asked for a server by name, and there's a named server
  501. in our network-status but we don't have its descriptor yet, we
  502. could return an unnamed server instead.
  503. - Fix NetBSD bug that could allow someone to force uninitialized RAM
  504. to be sent to a server's DNS resolver. This only affects NetBSD
  505. and other platforms that do not bounds-check tolower().
  506. - Reject (most) attempts to use Tor circuits with length one. (If
  507. many people start using Tor as a one-hop proxy, exit nodes become
  508. a more attractive target for compromise.)
  509. - Just because your DirPort is open doesn't mean people should be
  510. able to remotely teach you about hidden service descriptors. Now
  511. only accept rendezvous posts if you've got HSAuthoritativeDir set.
  512. o Major bugfixes, other:
  513. - Don't crash on race condition in dns.c: tor_assert(!resolve->expire)
  514. - When a client asks the server to resolve (not connect to)
  515. an address, and it has a cached answer, give them the cached answer.
  516. Previously, the server would give them no answer at all.
  517. - Allow really slow clients to not hang up five minutes into their
  518. directory downloads (suggested by Adam J. Richter).
  519. - We were building exactly the wrong circuits when we anticipated
  520. hidden service requirements, meaning Tor would have to build all
  521. its circuits on demand.
  522. - Avoid crashing when we mmap a router cache file of size 0.
  523. - When testing reachability of our DirPort, don't launch new
  524. tests when there's already one in progress -- unreachable
  525. servers were stacking up dozens of testing streams.
  526. o Minor bugfixes, correctness:
  527. - If we're a directory mirror and we ask for "all" network status
  528. documents, we would discard status documents from authorities
  529. we don't recognize.
  530. - Avoid a memory corruption bug when creating a hash table for
  531. the first time.
  532. - Avoid controller-triggered crash when misusing certain commands
  533. from a v0 controller on platforms that do not handle
  534. printf("%s",NULL) gracefully.
  535. - Don't crash when a controller sends a third argument to an
  536. "extendcircuit" request.
  537. - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
  538. response; fix error code when "getinfo dir/status/" fails.
  539. - Avoid crash when telling controller stream-status and a stream
  540. is detached.
  541. - Patch from Adam Langley to fix assert() in eventdns.c.
  542. - Fix a debug log message in eventdns to say "X resolved to Y"
  543. instead of "X resolved to X".
  544. - Make eventdns give strings for DNS errors, not just error numbers.
  545. - Track unreachable entry guards correctly: don't conflate
  546. 'unreachable by us right now' with 'listed as down by the directory
  547. authorities'. With the old code, if a guard was unreachable by
  548. us but listed as running, it would clog our guard list forever.
  549. - Behave correctly in case we ever have a network with more than
  550. 2GB/s total advertised capacity.
  551. - Make TrackExitHosts case-insensitive, and fix the behavior of
  552. ".suffix" TrackExitHosts items to avoid matching in the middle of
  553. an address.
  554. - Finally fix the openssl warnings from newer gccs that believe that
  555. ignoring a return value is okay, but casting a return value and
  556. then ignoring it is a sign of madness.
  557. - Prevent the contrib/exitlist script from printing the same
  558. result more than once.
  559. - Patch from Steve Hildrey: Generate network status correctly on
  560. non-versioning dirservers.
  561. - Don't listen to the X-Your-Address-Is hint if you did the lookup
  562. via Tor; otherwise you'll think you're the exit node's IP address.
  563. o Minor bugfixes, performance:
  564. - Two small performance improvements on parsing descriptors.
  565. - Major performance improvement on inserting descriptors: change
  566. algorithm from O(n^2) to O(n).
  567. - Make the common memory allocation path faster on machines where
  568. malloc(0) returns a pointer.
  569. - Start remembering X-Your-Address-Is directory hints even if you're
  570. a client, so you can become a server more smoothly.
  571. - Avoid duplicate entries on MyFamily line in server descriptor.
  572. o Packaging, features:
  573. - Remove architecture from OS X builds. The official builds are
  574. now universal binaries.
  575. - The Debian package now uses --verify-config when (re)starting,
  576. to distinguish configuration errors from other errors.
  577. - Update RPMs to require libevent 1.1b.
  578. o Packaging, bugfixes:
  579. - Patches so Tor builds with MinGW on Windows.
  580. - Patches so Tor might run on Cygwin again.
  581. - Resume building on non-gcc compilers and ancient gcc. Resume
  582. building with the -O0 compile flag. Resume building cleanly on
  583. Debian woody.
  584. - Run correctly on OS X platforms with case-sensitive filesystems.
  585. - Correct includes for net/if.h and net/pfvar.h on OpenBSD (from Tup).
  586. - Add autoconf checks so Tor can build on Solaris x86 again.
  587. o Documentation
  588. - Documented (and renamed) ServerDNSSearchDomains and
  589. ServerDNSResolvConfFile options.
  590. - Be clearer that the *ListenAddress directives can be repeated
  591. multiple times.
  592. Changes in version 0.1.1.24 - 2006-09-29
  593. o Major bugfixes:
  594. - Allow really slow clients to not hang up five minutes into their
  595. directory downloads (suggested by Adam J. Richter).
  596. - Fix major performance regression from 0.1.0.x: instead of checking
  597. whether we have enough directory information every time we want to
  598. do something, only check when the directory information has changed.
  599. This should improve client CPU usage by 25-50%.
  600. - Don't crash if, after a server has been running for a while,
  601. it can't resolve its hostname.
  602. - When a client asks us to resolve (not connect to) an address,
  603. and we have a cached answer, give them the cached answer.
  604. Previously, we would give them no answer at all.
  605. o Minor bugfixes:
  606. - Allow Tor to start when RunAsDaemon is set but no logs are set.
  607. - Don't crash when the controller receives a third argument to an
  608. "extendcircuit" request.
  609. - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
  610. response; fix error code when "getinfo dir/status/" fails.
  611. - Fix configure.in to not produce broken configure files with
  612. more recent versions of autoconf. Thanks to Clint for his auto*
  613. voodoo.
  614. - Fix security bug on NetBSD that could allow someone to force
  615. uninitialized RAM to be sent to a server's DNS resolver. This
  616. only affects NetBSD and other platforms that do not bounds-check
  617. tolower().
  618. - Warn user when using libevent 1.1a or earlier with win32 or kqueue
  619. methods: these are known to be buggy.
  620. - If we're a directory mirror and we ask for "all" network status
  621. documents, we would discard status documents from authorities
  622. we don't recognize.
  623. Changes in version 0.1.2.1-alpha - 2006-08-27
  624. o Major features:
  625. - Add "eventdns" async dns library from Adam Langley, tweaked to
  626. build on OSX and Windows. Only enabled if you pass the
  627. --enable-eventdns argument to configure.
  628. - Allow servers with no hostname or IP address to learn their
  629. IP address by asking the directory authorities. This code only
  630. kicks in when you would normally have exited with a "no address"
  631. error. Nothing's authenticated, so use with care.
  632. - Rather than waiting a fixed amount of time between retrying
  633. application connections, we wait only 5 seconds for the first,
  634. 10 seconds for the second, and 15 seconds for each retry after
  635. that. Hopefully this will improve the expected user experience.
  636. - Patch from Tup to add support for transparent AP connections:
  637. this basically bundles the functionality of trans-proxy-tor
  638. into the Tor mainline. Now hosts with compliant pf/netfilter
  639. implementations can redirect TCP connections straight to Tor
  640. without diverting through SOCKS. Needs docs.
  641. - Busy directory servers save lots of memory by spooling server
  642. descriptors, v1 directories, and v2 networkstatus docs to buffers
  643. as needed rather than en masse. Also mmap the cached-routers
  644. files, so we don't need to keep the whole thing in memory too.
  645. - Automatically avoid picking more than one node from the same
  646. /16 network when constructing a circuit.
  647. - Revise and clean up the torrc.sample that we ship with; add
  648. a section for BandwidthRate and BandwidthBurst.
  649. o Minor features:
  650. - Split circuit_t into origin_circuit_t and or_circuit_t, and
  651. split connection_t into edge, or, dir, control, and base structs.
  652. These will save quite a bit of memory on busy servers, and they'll
  653. also help us track down bugs in the code and bugs in the spec.
  654. - Experimentally re-enable kqueue on OSX when using libevent 1.1b
  655. or later. Log when we are doing this, so we can diagnose it when
  656. it fails. (Also, recommend libevent 1.1b for kqueue and
  657. win32 methods; deprecate libevent 1.0b harder; make libevent
  658. recommendation system saner.)
  659. - Start being able to build universal binaries on OS X (thanks
  660. to Phobos).
  661. - Export the default exit policy via the control port, so controllers
  662. don't need to guess what it is / will be later.
  663. - Add a man page entry for ProtocolWarnings.
  664. - Add TestVia config option to the man page.
  665. - Remove even more protocol-related warnings from Tor server logs,
  666. such as bad TLS handshakes and malformed begin cells.
  667. - Stop fetching descriptors if you're not a dir mirror and you
  668. haven't tried to establish any circuits lately. [This currently
  669. causes some dangerous behavior, because when you start up again
  670. you'll use your ancient server descriptors.]
  671. - New DirPort behavior: if you have your dirport set, you download
  672. descriptors aggressively like a directory mirror, whether or not
  673. your ORPort is set.
  674. - Get rid of the router_retry_connections notion. Now routers
  675. no longer try to rebuild long-term connections to directory
  676. authorities, and directory authorities no longer try to rebuild
  677. long-term connections to all servers. We still don't hang up
  678. connections in these two cases though -- we need to look at it
  679. more carefully to avoid flapping, and we likely need to wait til
  680. 0.1.1.x is obsolete.
  681. - Drop compatibility with obsolete Tors that permit create cells
  682. to have the wrong circ_id_type.
  683. - Re-enable per-connection rate limiting. Get rid of the "OP
  684. bandwidth" concept. Lay groundwork for "bandwidth classes" --
  685. separate global buckets that apply depending on what sort of conn
  686. it is.
  687. - Start publishing one minute or so after we find our ORPort
  688. to be reachable. This will help reduce the number of descriptors
  689. we have for ourselves floating around, since it's quite likely
  690. other things (e.g. DirPort) will change during that minute too.
  691. - Fork the v1 directory protocol into its own spec document,
  692. and mark dir-spec.txt as the currently correct (v2) spec.
  693. o Major bugfixes:
  694. - When we find our DirPort to be reachable, publish a new descriptor
  695. so we'll tell the world (reported by pnx).
  696. - Publish a new descriptor after we hup/reload. This is important
  697. if our config has changed such that we'll want to start advertising
  698. our DirPort now, etc.
  699. - Allow Tor to start when RunAsDaemon is set but no logs are set.
  700. - When we have a state file we cannot parse, tell the user and
  701. move it aside. Now we avoid situations where the user starts
  702. Tor in 1904, Tor writes a state file with that timestamp in it,
  703. the user fixes her clock, and Tor refuses to start.
  704. - Fix configure.in to not produce broken configure files with
  705. more recent versions of autoconf. Thanks to Clint for his auto*
  706. voodoo.
  707. - "tor --verify-config" now exits with -1(255) or 0 depending on
  708. whether the config options are bad or good.
  709. - Resolve bug 321 when using dnsworkers: append a period to every
  710. address we resolve at the exit node, so that we do not accidentally
  711. pick up local addresses, and so that failing searches are retried
  712. in the resolver search domains. (This is already solved for
  713. eventdns.) (This breaks Blossom servers for now.)
  714. - If we are using an exit enclave and we can't connect, e.g. because
  715. its webserver is misconfigured to not listen on localhost, then
  716. back off and try connecting from somewhere else before we fail.
  717. o Minor bugfixes:
  718. - Start compiling on MinGW on Windows (patches from Mike Chiussi).
  719. - Start compiling on MSVC6 on Windows (patches from Frediano Ziglio).
  720. - Fix bug 314: Tor clients issued "unsafe socks" warnings even
  721. when the IP address is mapped through MapAddress to a hostname.
  722. - Start passing "ipv4" hints to getaddrinfo(), so servers don't do
  723. useless IPv6 DNS resolves.
  724. - Patch suggested by Karsten Loesing: respond to SIGNAL command
  725. before we execute the signal, in case the signal shuts us down.
  726. - Clean up AllowInvalidNodes man page entry.
  727. - Claim a commonname of Tor, rather than TOR, in TLS handshakes.
  728. - Add more asserts to track down an assert error on a windows Tor
  729. server with connection_add being called with socket == -1.
  730. - Handle reporting OR_CONN_EVENT_NEW events to the controller.
  731. - Fix misleading log messages: an entry guard that is "unlisted",
  732. as well as not known to be "down" (because we've never heard
  733. of it), is not therefore "up".
  734. - Remove code to special-case "-cvs" ending, since it has not
  735. actually mattered since 0.0.9.
  736. - Make our socks5 handling more robust to broken socks clients:
  737. throw out everything waiting on the buffer in between socks
  738. handshake phases, since they can't possibly (so the theory
  739. goes) have predicted what we plan to respond to them.
  740. Changes in version 0.1.1.23 - 2006-07-30
  741. o Major bugfixes:
  742. - Fast Tor servers, especially exit nodes, were triggering asserts
  743. due to a bug in handling the list of pending DNS resolves. Some
  744. bugs still remain here; we're hunting them.
  745. - Entry guards could crash clients by sending unexpected input.
  746. - More fixes on reachability testing: if you find yourself reachable,
  747. then don't ever make any client requests (so you stop predicting
  748. circuits), then hup or have your clock jump, then later your IP
  749. changes, you won't think circuits are working, so you won't try to
  750. test reachability, so you won't publish.
  751. o Minor bugfixes:
  752. - Avoid a crash if the controller does a resetconf firewallports
  753. and then a setconf fascistfirewall=1.
  754. - Avoid an integer underflow when the dir authority decides whether
  755. a router is stable: we might wrongly label it stable, and compute
  756. a slightly wrong median stability, when a descriptor is published
  757. later than now.
  758. - Fix a place where we might trigger an assert if we can't build our
  759. own server descriptor yet.
  760. Changes in version 0.1.1.22 - 2006-07-05
  761. o Major bugfixes:
  762. - Fix a big bug that was causing servers to not find themselves
  763. reachable if they changed IP addresses. Since only 0.1.1.22+
  764. servers can do reachability testing correctly, now we automatically
  765. make sure to test via one of these.
  766. - Fix to allow clients and mirrors to learn directory info from
  767. descriptor downloads that get cut off partway through.
  768. - Directory authorities had a bug in deciding if a newly published
  769. descriptor was novel enough to make everybody want a copy -- a few
  770. servers seem to be publishing new descriptors many times a minute.
  771. o Minor bugfixes:
  772. - Fix a rare bug that was causing some servers to complain about
  773. "closing wedged cpuworkers" and skip some circuit create requests.
  774. - Make the Exit flag in directory status documents actually work.
  775. Changes in version 0.1.1.21 - 2006-06-10
  776. o Crash and assert fixes from 0.1.1.20:
  777. - Fix a rare crash on Tor servers that have enabled hibernation.
  778. - Fix a seg fault on startup for Tor networks that use only one
  779. directory authority.
  780. - Fix an assert from a race condition that occurs on Tor servers
  781. while exiting, where various threads are trying to log that they're
  782. exiting, and delete the logs, at the same time.
  783. - Make our unit tests pass again on certain obscure platforms.
  784. o Other fixes:
  785. - Add support for building SUSE RPM packages.
  786. - Speed up initial bootstrapping for clients: if we are making our
  787. first ever connection to any entry guard, then don't mark it down
  788. right after that.
  789. - When only one Tor server in the network is labelled as a guard,
  790. and we've already picked him, we would cycle endlessly picking him
  791. again, being unhappy about it, etc. Now we specifically exclude
  792. current guards when picking a new guard.
  793. - Servers send create cells more reliably after the TLS connection
  794. is established: we were sometimes forgetting to send half of them
  795. when we had more than one pending.
  796. - If we get a create cell that asks us to extend somewhere, but the
  797. Tor server there doesn't match the expected digest, we now send
  798. a destroy cell back, rather than silently doing nothing.
  799. - Make options->RedirectExit work again.
  800. - Make cookie authentication for the controller work again.
  801. - Stop being picky about unusual characters in the arguments to
  802. mapaddress. It's none of our business.
  803. - Add a new config option "TestVia" that lets you specify preferred
  804. middle hops to use for test circuits. Perhaps this will let me
  805. debug the reachability problems better.
  806. o Log / documentation fixes:
  807. - If we're a server and some peer has a broken TLS certificate, don't
  808. log about it unless ProtocolWarnings is set, i.e., we want to hear
  809. about protocol violations by others.
  810. - Fix spelling of VirtualAddrNetwork in man page.
  811. - Add a better explanation at the top of the autogenerated torrc file
  812. about what happened to our old torrc.
  813. Changes in version 0.1.1.20 - 2006-05-23
  814. o Bugfixes:
  815. - Downgrade a log severity where servers complain that they're
  816. invalid.
  817. - Avoid a compile warning on FreeBSD.
  818. - Remove string size limit on NEWDESC messages; solve bug 291.
  819. - Correct the RunAsDaemon entry in the man page; ignore RunAsDaemon
  820. more thoroughly when we're running on windows.
  821. Changes in version 0.1.1.19-rc - 2006-05-03
  822. o Minor bugs:
  823. - Regenerate our local descriptor if it's dirty and we try to use
  824. it locally (e.g. if it changes during reachability detection).
  825. - If we setconf our ORPort to 0, we continued to listen on the
  826. old ORPort and receive connections.
  827. - Avoid a second warning about machine/limits.h on Debian
  828. GNU/kFreeBSD.
  829. - Be willing to add our own routerinfo into the routerlist.
  830. Now authorities will include themselves in their directories
  831. and network-statuses.
  832. - Stop trying to upload rendezvous descriptors to every
  833. directory authority: only try the v1 authorities.
  834. - Servers no longer complain when they think they're not
  835. registered with the directory authorities. There were too many
  836. false positives.
  837. - Backport dist-rpm changes so rpms can be built without errors.
  838. o Features:
  839. - Implement an option, VirtualAddrMask, to set which addresses
  840. get handed out in response to mapaddress requests. This works
  841. around a bug in tsocks where 127.0.0.0/8 is never socksified.
  842. Changes in version 0.1.1.18-rc - 2006-04-10
  843. o Major fixes:
  844. - Work harder to download live network-statuses from all the
  845. directory authorities we know about. Improve the threshold
  846. decision logic so we're more robust to edge cases.
  847. - When fetching rendezvous descriptors, we were willing to ask
  848. v2 authorities too, which would always return 404.
  849. o Minor fixes:
  850. - Stop listing down or invalid nodes in the v1 directory. This will
  851. reduce its bulk by about 1/3, and reduce load on directory
  852. mirrors.
  853. - When deciding whether a router is Fast or Guard-worthy, consider
  854. his advertised BandwidthRate and not just the BandwidthCapacity.
  855. - No longer ship INSTALL and README files -- they are useless now.
  856. - Force rpmbuild to behave and honor target_cpu.
  857. - Avoid warnings about machine/limits.h on Debian GNU/kFreeBSD.
  858. - Start to include translated versions of the tor-doc-*.html
  859. files, along with the screenshots. Still needs more work.
  860. - Start sending back 512 and 451 errors if mapaddress fails,
  861. rather than not sending anything back at all.
  862. - When we fail to bind or listen on an incoming or outgoing
  863. socket, we should close it before failing. otherwise we just
  864. leak it. (thanks to weasel for finding.)
  865. - Allow "getinfo dir/status/foo" to work, as long as your DirPort
  866. is enabled. (This is a hack, and will be fixed in 0.1.2.x.)
  867. - Make NoPublish (even though deprecated) work again.
  868. - Fix a minor security flaw where a versioning auth dirserver
  869. could list a recommended version many times in a row to make
  870. clients more convinced that it's recommended.
  871. - Fix crash bug if there are two unregistered servers running
  872. with the same nickname, one of them is down, and you ask for
  873. them by nickname in your EntryNodes or ExitNodes. Also, try
  874. to pick the one that's running rather than an arbitrary one.
  875. - Fix an infinite loop we could hit if we go offline for too long.
  876. - Complain when we hit WSAENOBUFS on recv() or write() too.
  877. Perhaps this will help us hunt the bug.
  878. - If you're not a versioning dirserver, don't put the string
  879. "client-versions \nserver-versions \n" in your network-status.
  880. - Lower the minimum required number of file descriptors to 1000,
  881. so we can have some overhead for Valgrind on Linux, where the
  882. default ulimit -n is 1024.
  883. o New features:
  884. - Add tor.dizum.com as the fifth authoritative directory server.
  885. - Add a new config option FetchUselessDescriptors, off by default,
  886. for when you plan to run "exitlist" on your client and you want
  887. to know about even the non-running descriptors.
  888. Changes in version 0.1.1.17-rc - 2006-03-28
  889. o Major fixes:
  890. - Clients and servers since 0.1.1.10-alpha have been expiring
  891. connections whenever they are idle for 5 minutes and they *do*
  892. have circuits on them. Oops. With this new version, clients will
  893. discard their previous entry guard choices and avoid choosing
  894. entry guards running these flawed versions.
  895. - Fix memory leak when uncompressing concatenated zlib streams. This
  896. was causing substantial leaks over time on Tor servers.
  897. - The v1 directory was including servers as much as 48 hours old,
  898. because that's how the new routerlist->routers works. Now only
  899. include them if they're 20 hours old or less.
  900. o Minor fixes:
  901. - Resume building on irix64, netbsd 2.0, etc.
  902. - On non-gcc compilers (e.g. solaris), use "-g -O" instead of
  903. "-Wall -g -O2".
  904. - Stop writing the "router.desc" file, ever. Nothing uses it anymore,
  905. and it is confusing some users.
  906. - Mirrors stop caching the v1 directory so often.
  907. - Make the max number of old descriptors that a cache will hold
  908. rise with the number of directory authorities, so we can scale.
  909. - Change our win32 uname() hack to be more forgiving about what
  910. win32 versions it thinks it's found.
  911. o New features:
  912. - Add lefkada.eecs.harvard.edu as a fourth authoritative directory
  913. server.
  914. - When the controller's *setconf commands fail, collect an error
  915. message in a string and hand it back to the controller.
  916. - Make the v2 dir's "Fast" flag based on relative capacity, just
  917. like "Stable" is based on median uptime. Name everything in the
  918. top 7/8 Fast, and only the top 1/2 gets to be a Guard.
  919. - Log server fingerprint on startup, so new server operators don't
  920. have to go hunting around their filesystem for it.
  921. - Return a robots.txt on our dirport to discourage google indexing.
  922. - Let the controller ask for GETINFO dir/status/foo so it can ask
  923. directly rather than connecting to the dir port. Only works when
  924. dirport is set for now.
  925. o New config options rather than constants in the code:
  926. - SocksTimeout: How long do we let a socks connection wait
  927. unattached before we fail it?
  928. - CircuitBuildTimeout: Cull non-open circuits that were born
  929. at least this many seconds ago.
  930. - CircuitIdleTimeout: Cull open clean circuits that were born
  931. at least this many seconds ago.
  932. Changes in version 0.1.1.16-rc - 2006-03-18
  933. o Bugfixes on 0.1.1.15-rc:
  934. - Fix assert when the controller asks to attachstream a connect-wait
  935. or resolve-wait stream.
  936. - Now do address rewriting when the controller asks us to attach
  937. to a particular circuit too. This will let Blossom specify
  938. "moria2.exit" without having to learn what moria2's IP address is.
  939. - Make the "tor --verify-config" command-line work again, so people
  940. can automatically check if their torrc will parse.
  941. - Authoritative dirservers no longer require an open connection from
  942. a server to consider him "reachable". We need this change because
  943. when we add new auth dirservers, old servers won't know not to
  944. hang up on them.
  945. - Let Tor build on Sun CC again.
  946. - Fix an off-by-one buffer size in dirserv.c that magically never
  947. hit our three authorities but broke sjmurdoch's own tor network.
  948. - If we as a directory mirror don't know of any v1 directory
  949. authorities, then don't try to cache any v1 directories.
  950. - Stop warning about unknown servers in our family when they are
  951. given as hex digests.
  952. - Stop complaining as quickly to the server operator that he
  953. hasn't registered his nickname/key binding.
  954. - Various cleanups so we can add new V2 Auth Dirservers.
  955. - Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
  956. reflect the updated flags in our v2 dir protocol.
  957. - Resume allowing non-printable characters for exit streams (both
  958. for connecting and for resolving). Now we tolerate applications
  959. that don't follow the RFCs. But continue to block malformed names
  960. at the socks side.
  961. o Bugfixes on 0.1.0.x:
  962. - Fix assert bug in close_logs(): when we close and delete logs,
  963. remove them all from the global "logfiles" list.
  964. - Fix minor integer overflow in calculating when we expect to use up
  965. our bandwidth allocation before hibernating.
  966. - Fix a couple of bugs in OpenSSL detection. Also, deal better when
  967. there are multiple SSLs installed with different versions.
  968. - When we try to be a server and Address is not explicitly set and
  969. our hostname resolves to a private IP address, try to use an
  970. interface address if it has a public address. Now Windows machines
  971. that think of themselves as localhost can work by default.
  972. o New features:
  973. - Let the controller ask for GETINFO dir/server/foo so it can ask
  974. directly rather than connecting to the dir port.
  975. - Let the controller tell us about certain router descriptors
  976. that it doesn't want Tor to use in circuits. Implement
  977. SETROUTERPURPOSE and modify +POSTDESCRIPTOR to do this.
  978. - New config option SafeSocks to reject all application connections
  979. using unsafe socks protocols. Defaults to off.
  980. Changes in version 0.1.1.15-rc - 2006-03-11
  981. o Bugfixes and cleanups:
  982. - When we're printing strings from the network, don't try to print
  983. non-printable characters. This protects us against shell escape
  984. sequence exploits, and also against attacks to fool humans into
  985. misreading their logs.
  986. - Fix a bug where Tor would fail to establish any connections if you
  987. left it off for 24 hours and then started it: we were happy with
  988. the obsolete network statuses, but they all referred to router
  989. descriptors that were too old to fetch, so we ended up with no
  990. valid router descriptors.
  991. - Fix a seg fault in the controller's "getinfo orconn-status"
  992. command while listing status on incoming handshaking connections.
  993. Introduce a status name "NEW" for these connections.
  994. - If we get a linelist or linelist_s config option from the torrc
  995. (e.g. ExitPolicy) and it has no value, warn and skip rather than
  996. silently resetting it to its default.
  997. - Don't abandon entry guards until they've been down or gone for
  998. a whole month.
  999. - Cleaner and quieter log messages.
  1000. o New features:
  1001. - New controller signal NEWNYM that makes new application requests
  1002. use clean circuits.
  1003. - Add a new circuit purpose 'controller' to let the controller ask
  1004. for a circuit that Tor won't try to use. Extend the EXTENDCIRCUIT
  1005. controller command to let you specify the purpose if you're
  1006. starting a new circuit. Add a new SETCIRCUITPURPOSE controller
  1007. command to let you change a circuit's purpose after it's been
  1008. created.
  1009. - Accept "private:*" in routerdesc exit policies; not generated yet
  1010. because older Tors do not understand it.
  1011. - Add BSD-style contributed startup script "rc.subr" from Peter
  1012. Thoenen.
  1013. Changes in version 0.1.1.14-alpha - 2006-02-20
  1014. o Bugfixes on 0.1.1.x:
  1015. - Don't die if we ask for a stdout or stderr log (even implicitly)
  1016. and we're set to RunAsDaemon -- just warn.
  1017. - We still had a few bugs in the OR connection rotation code that
  1018. caused directory servers to slowly aggregate connections to other
  1019. fast Tor servers. This time for sure!
  1020. - Make log entries on Win32 include the name of the function again.
  1021. - We were treating a pair of exit policies if they were equal even
  1022. if one said accept and the other said reject -- causing us to
  1023. not always publish a new descriptor since we thought nothing
  1024. had changed.
  1025. - Retry pending server downloads as well as pending networkstatus
  1026. downloads when we unexpectedly get a socks request.
  1027. - We were ignoring the IS_FAST flag in the directory status,
  1028. meaning we were willing to pick trivial-bandwidth nodes for "fast"
  1029. connections.
  1030. - If the controller's SAVECONF command fails (e.g. due to file
  1031. permissions), let the controller know that it failed.
  1032. o Features:
  1033. - If we're trying to be a Tor server and running Windows 95/98/ME
  1034. as a server, explain that we'll likely crash.
  1035. - When we're a server, a client asks for an old-style directory,
  1036. and our write bucket is empty, don't give it to him. This way
  1037. small servers can continue to serve the directory *sometimes*,
  1038. without getting overloaded.
  1039. - Compress exit policies even more -- look for duplicate lines
  1040. and remove them.
  1041. - Clients now honor the "guard" flag in the router status when
  1042. picking entry guards, rather than looking at is_fast or is_stable.
  1043. - Retain unrecognized lines in $DATADIR/state file, so that we can
  1044. be forward-compatible.
  1045. - Generate 18.0.0.0/8 address policy format in descs when we can;
  1046. warn when the mask is not reducible to a bit-prefix.
  1047. - Let the user set ControlListenAddress in the torrc. This can be
  1048. dangerous, but there are some cases (like a secured LAN) where it
  1049. makes sense.
  1050. - Split ReachableAddresses into ReachableDirAddresses and
  1051. ReachableORAddresses, so we can restrict Dir conns to port 80
  1052. and OR conns to port 443.
  1053. - Now we can target arch and OS in rpm builds (contributed by
  1054. Phobos). Also make the resulting dist-rpm filename match the
  1055. target arch.
  1056. - New config options to help controllers: FetchServerDescriptors
  1057. and FetchHidServDescriptors for whether to fetch server
  1058. info and hidserv info or let the controller do it, and
  1059. PublishServerDescriptor and PublishHidServDescriptors.
  1060. - Also let the controller set the __AllDirActionsPrivate config
  1061. option if you want all directory fetches/publishes to happen via
  1062. Tor (it assumes your controller bootstraps your circuits).
  1063. Changes in version 0.1.0.17 - 2006-02-17
  1064. o Crash bugfixes on 0.1.0.x:
  1065. - When servers with a non-zero DirPort came out of hibernation,
  1066. sometimes they would trigger an assert.
  1067. o Other important bugfixes:
  1068. - On platforms that don't have getrlimit (like Windows), we were
  1069. artificially constraining ourselves to a max of 1024
  1070. connections. Now just assume that we can handle as many as 15000
  1071. connections. Hopefully this won't cause other problems.
  1072. o Backported features:
  1073. - When we're a server, a client asks for an old-style directory,
  1074. and our write bucket is empty, don't give it to him. This way
  1075. small servers can continue to serve the directory *sometimes*,
  1076. without getting overloaded.
  1077. - Whenever you get a 503 in response to a directory fetch, try
  1078. once more. This will become important once servers start sending
  1079. 503's whenever they feel busy.
  1080. - Fetch a new directory every 120 minutes, not every 40 minutes.
  1081. Now that we have hundreds of thousands of users running the old
  1082. directory algorithm, it's starting to hurt a lot.
  1083. - Bump up the period for forcing a hidden service descriptor upload
  1084. from 20 minutes to 1 hour.
  1085. Changes in version 0.1.1.13-alpha - 2006-02-09
  1086. o Crashes in 0.1.1.x:
  1087. - When you tried to setconf ORPort via the controller, Tor would
  1088. crash. So people using TorCP to become a server were sad.
  1089. - Solve (I hope) the stack-smashing bug that we were seeing on fast
  1090. servers. The problem appears to be something do with OpenSSL's
  1091. random number generation, or how we call it, or something. Let me
  1092. know if the crashes continue.
  1093. - Turn crypto hardware acceleration off by default, until we find
  1094. somebody smart who can test it for us. (It appears to produce
  1095. seg faults in at least some cases.)
  1096. - Fix a rare assert error when we've tried all intro points for
  1097. a hidden service and we try fetching the service descriptor again:
  1098. "Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed"
  1099. o Major fixes:
  1100. - Fix a major load balance bug: we were round-robining in 16 KB
  1101. chunks, and servers with bandwidthrate of 20 KB, while downloading
  1102. a 600 KB directory, would starve their other connections. Now we
  1103. try to be a bit more fair.
  1104. - Dir authorities and mirrors were never expiring the newest
  1105. descriptor for each server, causing memory and directory bloat.
  1106. - Fix memory-bloating and connection-bloating bug on servers: We
  1107. were never closing any connection that had ever had a circuit on
  1108. it, because we were checking conn->n_circuits == 0, yet we had a
  1109. bug that let it go negative.
  1110. - Make Tor work using squid as your http proxy again -- squid
  1111. returns an error if you ask for a URL that's too long, and it uses
  1112. a really generic error message. Plus, many people are behind a
  1113. transparent squid so they don't even realize it.
  1114. - On platforms that don't have getrlimit (like Windows), we were
  1115. artificially constraining ourselves to a max of 1024
  1116. connections. Now just assume that we can handle as many as 15000
  1117. connections. Hopefully this won't cause other problems.
  1118. - Add a new config option ExitPolicyRejectPrivate which defaults to
  1119. 1. This means all exit policies will begin with rejecting private
  1120. addresses, unless the server operator explicitly turns it off.
  1121. o Major features:
  1122. - Clients not longer download descriptors for non-running
  1123. descriptors.
  1124. - Before we add new directory authorities, we should make it
  1125. clear that only v1 authorities should receive/publish hidden
  1126. service descriptors.
  1127. o Minor features:
  1128. - As soon as we've fetched some more directory info, immediately
  1129. try to download more server descriptors. This way we don't have
  1130. a 10 second pause during initial bootstrapping.
  1131. - Remove even more loud log messages that the server operator can't
  1132. do anything about.
  1133. - When we're running an obsolete or un-recommended version, make
  1134. the log message more clear about what the problem is and what
  1135. versions *are* still recommended.
  1136. - Provide a more useful warn message when our onion queue gets full:
  1137. the CPU is too slow or the exit policy is too liberal.
  1138. - Don't warn when we receive a 503 from a dirserver/cache -- this
  1139. will pave the way for them being able to refuse if they're busy.
  1140. - When we fail to bind a listener, try to provide a more useful
  1141. log message: e.g., "Is Tor already running?"
  1142. - Adjust tor-spec to parameterize cell and key lengths. Now Ian
  1143. Goldberg can prove things about our handshake protocol more
  1144. easily.
  1145. - MaxConn has been obsolete for a while now. Document the ConnLimit
  1146. config option, which is a *minimum* number of file descriptors
  1147. that must be available else Tor refuses to start.
  1148. - Apply Matt Ghali's --with-syslog-facility patch to ./configure
  1149. if you log to syslog and want something other than LOG_DAEMON.
  1150. - Make dirservers generate a separate "guard" flag to mean,
  1151. "would make a good entry guard". Make clients parse it and vote
  1152. on it. Not used by clients yet.
  1153. - Implement --with-libevent-dir option to ./configure. Also, improve
  1154. search techniques to find libevent, and use those for openssl too.
  1155. - Bump the default bandwidthrate to 3 MB, and burst to 6 MB
  1156. - Only start testing reachability once we've established a
  1157. circuit. This will make startup on dirservers less noisy.
  1158. - Don't try to upload hidden service descriptors until we have
  1159. established a circuit.
  1160. - Fix the controller's "attachstream 0" command to treat conn like
  1161. it just connected, doing address remapping, handling .exit and
  1162. .onion idioms, and so on. Now we're more uniform in making sure
  1163. that the controller hears about new and closing connections.
  1164. Changes in version 0.1.1.12-alpha - 2006-01-11
  1165. o Bugfixes on 0.1.1.x:
  1166. - The fix to close duplicate server connections was closing all
  1167. Tor client connections if they didn't establish a circuit
  1168. quickly enough. Oops.
  1169. - Fix minor memory issue (double-free) that happened on exit.
  1170. o Bugfixes on 0.1.0.x:
  1171. - Tor didn't warn when it failed to open a log file.
  1172. Changes in version 0.1.1.11-alpha - 2006-01-10
  1173. o Crashes in 0.1.1.x:
  1174. - Include all the assert/crash fixes from 0.1.0.16.
  1175. - If you start Tor and then quit very quickly, there were some
  1176. races that tried to free things that weren't allocated yet.
  1177. - Fix a rare memory stomp if you're running hidden services.
  1178. - Fix segfault when specifying DirServer in config without nickname.
  1179. - Fix a seg fault when you finish connecting to a server but at
  1180. that moment you dump his server descriptor.
  1181. - Extendcircuit and Attachstream controller commands would
  1182. assert/crash if you don't give them enough arguments.
  1183. - Fix an assert error when we're out of space in the connection_list
  1184. and we try to post a hidden service descriptor (reported by weasel).
  1185. - If you specify a relative torrc path and you set RunAsDaemon in
  1186. your torrc, then it chdir()'s to the new directory. If you HUP,
  1187. it tries to load the new torrc location, fails, and exits.
  1188. The fix: no longer allow a relative path to torrc using -f.
  1189. o Major features:
  1190. - Implement "entry guards": automatically choose a handful of entry
  1191. nodes and stick with them for all circuits. Only pick new guards
  1192. when the ones you have are unsuitable, and if the old guards
  1193. become suitable again, switch back. This will increase security
  1194. dramatically against certain end-point attacks. The EntryNodes
  1195. config option now provides some hints about which entry guards you
  1196. want to use most; and StrictEntryNodes means to only use those.
  1197. - New directory logic: download by descriptor digest, not by
  1198. fingerprint. Caches try to download all listed digests from
  1199. authorities; clients try to download "best" digests from caches.
  1200. This avoids partitioning and isolating attacks better.
  1201. - Make the "stable" router flag in network-status be the median of
  1202. the uptimes of running valid servers, and make clients pay
  1203. attention to the network-status flags. Thus the cutoff adapts
  1204. to the stability of the network as a whole, making IRC, IM, etc
  1205. connections more reliable.
  1206. o Major fixes:
  1207. - Tor servers with dynamic IP addresses were needing to wait 18
  1208. hours before they could start doing reachability testing using
  1209. the new IP address and ports. This is because they were using
  1210. the internal descriptor to learn what to test, yet they were only
  1211. rebuilding the descriptor once they decided they were reachable.
  1212. - Tor 0.1.1.9 and 0.1.1.10 had a serious bug that caused clients
  1213. to download certain server descriptors, throw them away, and then
  1214. fetch them again after 30 minutes. Now mirrors throw away these
  1215. server descriptors so clients can't get them.
  1216. - We were leaving duplicate connections to other ORs open for a week,
  1217. rather than closing them once we detect a duplicate. This only
  1218. really affected authdirservers, but it affected them a lot.
  1219. - Spread the authdirservers' reachability testing over the entire
  1220. testing interval, so we don't try to do 500 TLS's at once every
  1221. 20 minutes.
  1222. o Minor fixes:
  1223. - If the network is down, and we try to connect to a conn because
  1224. we have a circuit in mind, and we timeout (30 seconds) because the
  1225. network never answers, we were expiring the circuit, but we weren't
  1226. obsoleting the connection or telling the entry_guards functions.
  1227. - Some Tor servers process billions of cells per day. These statistics
  1228. need to be uint64_t's.
  1229. - Check for integer overflows in more places, when adding elements
  1230. to smartlists. This could possibly prevent a buffer overflow
  1231. on malicious huge inputs. I don't see any, but I haven't looked
  1232. carefully.
  1233. - ReachableAddresses kept growing new "reject *:*" lines on every
  1234. setconf/reload.
  1235. - When you "setconf log" via the controller, it should remove all
  1236. logs. We were automatically adding back in a "log notice stdout".
  1237. - Newly bootstrapped Tor networks couldn't establish hidden service
  1238. circuits until they had nodes with high uptime. Be more tolerant.
  1239. - We were marking servers down when they could not answer every piece
  1240. of the directory request we sent them. This was far too harsh.
  1241. - Fix the torify (tsocks) config file to not use Tor for localhost
  1242. connections.
  1243. - Directory authorities now go to the proper authority when asking for
  1244. a networkstatus, even when they want a compressed one.
  1245. - Fix a harmless bug that was causing Tor servers to log
  1246. "Got an end because of misc error, but we're not an AP. Closing."
  1247. - Authorities were treating their own descriptor changes as cosmetic,
  1248. meaning the descriptor available in the network-status and the
  1249. descriptor that clients downloaded were different.
  1250. - The OS X installer was adding a symlink for tor_resolve but
  1251. the binary was called tor-resolve (reported by Thomas Hardly).
  1252. - Workaround a problem with some http proxies where they refuse GET
  1253. requests that specify "Content-Length: 0" (reported by Adrian).
  1254. - Fix wrong log message when you add a "HiddenServiceNodes" config
  1255. line without any HiddenServiceDir line (reported by Chris Thomas).
  1256. o Minor features:
  1257. - Write the TorVersion into the state file so we have a prayer of
  1258. keeping forward and backward compatibility.
  1259. - Revive the FascistFirewall config option rather than eliminating it:
  1260. now it's a synonym for ReachableAddresses *:80,*:443.
  1261. - Clients choose directory servers from the network status lists,
  1262. not from their internal list of router descriptors. Now they can
  1263. go to caches directly rather than needing to go to authorities
  1264. to bootstrap.
  1265. - Directory authorities ignore router descriptors that have only
  1266. cosmetic differences: do this for 0.1.0.x servers now too.
  1267. - Add a new flag to network-status indicating whether the server
  1268. can answer v2 directory requests too.
  1269. - Authdirs now stop whining so loudly about bad descriptors that
  1270. they fetch from other dirservers. So when there's a log complaint,
  1271. it's for sure from a freshly uploaded descriptor.
  1272. - Reduce memory requirements in our structs by changing the order
  1273. of fields.
  1274. - There used to be two ways to specify your listening ports in a
  1275. server descriptor: on the "router" line and with a separate "ports"
  1276. line. Remove support for the "ports" line.
  1277. - New config option "AuthDirRejectUnlisted" for auth dirservers as
  1278. a panic button: if we get flooded with unusable servers we can
  1279. revert to only listing servers in the approved-routers file.
  1280. - Auth dir servers can now mark a fingerprint as "!reject" or
  1281. "!invalid" in the approved-routers file (as its nickname), to
  1282. refuse descriptors outright or include them but marked as invalid.
  1283. - Servers store bandwidth history across restarts/crashes.
  1284. - Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
  1285. get a better idea of why their circuits failed. Not used yet.
  1286. - Directory mirrors now cache up to 16 unrecognized network-status
  1287. docs. Now we can add new authdirservers and they'll be cached too.
  1288. - When picking a random directory, prefer non-authorities if any
  1289. are known.
  1290. - New controller option "getinfo desc/all-recent" to fetch the
  1291. latest server descriptor for every router that Tor knows about.
  1292. Changes in version 0.1.0.16 - 2006-01-02
  1293. o Crash bugfixes on 0.1.0.x:
  1294. - On Windows, build with a libevent patch from "I-M Weasel" to avoid
  1295. corrupting the heap, losing FDs, or crashing when we need to resize
  1296. the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
  1297. - It turns out sparc64 platforms crash on unaligned memory access
  1298. too -- so detect and avoid this.
  1299. - Handle truncated compressed data correctly (by detecting it and
  1300. giving an error).
  1301. - Fix possible-but-unlikely free(NULL) in control.c.
  1302. - When we were closing connections, there was a rare case that
  1303. stomped on memory, triggering seg faults and asserts.
  1304. - Avoid potential infinite recursion when building a descriptor. (We
  1305. don't know that it ever happened, but better to fix it anyway.)
  1306. - We were neglecting to unlink marked circuits from soon-to-close OR
  1307. connections, which caused some rare scribbling on freed memory.
  1308. - Fix a memory stomping race bug when closing the joining point of two
  1309. rendezvous circuits.
  1310. - Fix an assert in time parsing found by Steven Murdoch.
  1311. o Other bugfixes on 0.1.0.x:
  1312. - When we're doing reachability testing, provide more useful log
  1313. messages so the operator knows what to expect.
  1314. - Do not check whether DirPort is reachable when we are suppressing
  1315. advertising it because of hibernation.
  1316. - When building with -static or on Solaris, we sometimes needed -ldl.
  1317. - One of the dirservers (tor26) changed its IP address.
  1318. - When we're deciding whether a stream has enough circuits around
  1319. that can handle it, count the freshly dirty ones and not the ones
  1320. that are so dirty they won't be able to handle it.
  1321. - When we're expiring old circuits, we had a logic error that caused
  1322. us to close new rendezvous circuits rather than old ones.
  1323. - Give a more helpful log message when you try to change ORPort via
  1324. the controller: you should upgrade Tor if you want that to work.
  1325. - We were failing to parse Tor versions that start with "Tor ".
  1326. - Tolerate faulty streams better: when a stream fails for reason
  1327. exitpolicy, stop assuming that the router is lying about his exit
  1328. policy. When a stream fails for reason misc, allow it to retry just
  1329. as if it was resolvefailed. When a stream has failed three times,
  1330. reset its failure count so we can try again and get all three tries.
  1331. Changes in version 0.1.1.10-alpha - 2005-12-11
  1332. o Correctness bugfixes on 0.1.0.x:
  1333. - On Windows, build with a libevent patch from "I-M Weasel" to avoid
  1334. corrupting the heap, losing FDs, or crashing when we need to resize
  1335. the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
  1336. - Stop doing the complex voodoo overkill checking for insecure
  1337. Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
  1338. - When we were closing connections, there was a rare case that
  1339. stomped on memory, triggering seg faults and asserts.
  1340. - We were neglecting to unlink marked circuits from soon-to-close OR
  1341. connections, which caused some rare scribbling on freed memory.
  1342. - When we're deciding whether a stream has enough circuits around
  1343. that can handle it, count the freshly dirty ones and not the ones
  1344. that are so dirty they won't be able to handle it.
  1345. - Recover better from TCP connections to Tor servers that are
  1346. broken but don't tell you (it happens!); and rotate TLS
  1347. connections once a week.
  1348. - When we're expiring old circuits, we had a logic error that caused
  1349. us to close new rendezvous circuits rather than old ones.
  1350. - Fix a scary-looking but apparently harmless bug where circuits
  1351. would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
  1352. servers, and never switch to state CIRCUIT_STATE_OPEN.
  1353. - When building with -static or on Solaris, we sometimes needed to
  1354. build with -ldl.
  1355. - Give a useful message when people run Tor as the wrong user,
  1356. rather than telling them to start chowning random directories.
  1357. - We were failing to inform the controller about new .onion streams.
  1358. o Security bugfixes on 0.1.0.x:
  1359. - Refuse server descriptors if the fingerprint line doesn't match
  1360. the included identity key. Tor doesn't care, but other apps (and
  1361. humans) might actually be trusting the fingerprint line.
  1362. - We used to kill the circuit when we receive a relay command we
  1363. don't recognize. Now we just drop it.
  1364. - Start obeying our firewall options more rigorously:
  1365. . If we can't get to a dirserver directly, try going via Tor.
  1366. . Don't ever try to connect (as a client) to a place our
  1367. firewall options forbid.
  1368. . If we specify a proxy and also firewall options, obey the
  1369. firewall options even when we're using the proxy: some proxies
  1370. can only proxy to certain destinations.
  1371. - Fix a bug found by Lasse Overlier: when we were making internal
  1372. circuits (intended to be cannibalized later for rendezvous and
  1373. introduction circuits), we were picking them so that they had
  1374. useful exit nodes. There was no need for this, and it actually
  1375. aids some statistical attacks.
  1376. - Start treating internal circuits and exit circuits separately.
  1377. It's important to keep them separate because internal circuits
  1378. have their last hops picked like middle hops, rather than like
  1379. exit hops. So exiting on them will break the user's expectations.
  1380. o Bugfixes on 0.1.1.x:
  1381. - Take out the mis-feature where we tried to detect IP address
  1382. flapping for people with DynDNS, and chose not to upload a new
  1383. server descriptor sometimes.
  1384. - Try to be compatible with OpenSSL 0.9.6 again.
  1385. - Log fix: when the controller is logging about .onion addresses,
  1386. sometimes it didn't include the ".onion" part of the address.
  1387. - Don't try to modify options->DirServers internally -- if the
  1388. user didn't specify any, just add the default ones directly to
  1389. the trusted dirserver list. This fixes a bug where people running
  1390. controllers would use SETCONF on some totally unrelated config
  1391. option, and Tor would start yelling at them about changing their
  1392. DirServer lines.
  1393. - Let the controller's redirectstream command specify a port, in
  1394. case the controller wants to change that too.
  1395. - When we requested a pile of server descriptors, we sometimes
  1396. accidentally launched a duplicate request for the first one.
  1397. - Bugfix for trackhostexits: write down the fingerprint of the
  1398. chosen exit, not its nickname, because the chosen exit might not
  1399. be verified.
  1400. - When parsing foo.exit, if foo is unknown, and we are leaving
  1401. circuits unattached, set the chosen_exit field and leave the
  1402. address empty. This matters because controllers got confused
  1403. otherwise.
  1404. - Directory authorities no longer try to download server
  1405. descriptors that they know they will reject.
  1406. o Features and updates:
  1407. - Replace balanced trees with hash tables: this should make stuff
  1408. significantly faster.
  1409. - Resume using the AES counter-mode implementation that we ship,
  1410. rather than OpenSSL's. Ours is significantly faster.
  1411. - Many other CPU and memory improvements.
  1412. - Add a new config option FastFirstHopPK (on by default) so clients
  1413. do a trivial crypto handshake for their first hop, since TLS has
  1414. already taken care of confidentiality and authentication.
  1415. - Add a new config option TestSocks so people can see if their
  1416. applications are using socks4, socks4a, socks5-with-ip, or
  1417. socks5-with-hostname. This way they don't have to keep mucking
  1418. with tcpdump and wondering if something got cached somewhere.
  1419. - Warn when listening on a public address for socks. I suspect a
  1420. lot of people are setting themselves up as open socks proxies,
  1421. and they have no idea that jerks on the Internet are using them,
  1422. since they simply proxy the traffic into the Tor network.
  1423. - Add "private:*" as an alias in configuration for policies. Now
  1424. you can simplify your exit policy rather than needing to list
  1425. every single internal or nonroutable network space.
  1426. - Add a new controller event type that allows controllers to get
  1427. all server descriptors that were uploaded to a router in its role
  1428. as authoritative dirserver.
  1429. - Start shipping socks-extensions.txt, tor-doc-unix.html,
  1430. tor-doc-server.html, and stylesheet.css in the tarball.
  1431. - Stop shipping tor-doc.html in the tarball.
  1432. Changes in version 0.1.1.9-alpha - 2005-11-15
  1433. o Usability improvements:
  1434. - Start calling it FooListenAddress rather than FooBindAddress,
  1435. since few of our users know what it means to bind an address
  1436. or port.
  1437. - Reduce clutter in server logs. We're going to try to make
  1438. them actually usable now. New config option ProtocolWarnings that
  1439. lets you hear about how _other Tors_ are breaking the protocol. Off
  1440. by default.
  1441. - Divide log messages into logging domains. Once we put some sort
  1442. of interface on this, it will let people looking at more verbose
  1443. log levels specify the topics they want to hear more about.
  1444. - Make directory servers return better http 404 error messages
  1445. instead of a generic "Servers unavailable".
  1446. - Check for even more Windows version flags when writing the platform
  1447. string in server descriptors, and note any we don't recognize.
  1448. - Clean up more of the OpenSSL memory when exiting, so we can detect
  1449. memory leaks better.
  1450. - Make directory authorities be non-versioning, non-naming by
  1451. default. Now we can add new directory servers without requiring
  1452. their operators to pay close attention.
  1453. - When logging via syslog, include the pid whenever we provide
  1454. a log entry. Suggested by Todd Fries.
  1455. o Performance improvements:
  1456. - Directory servers now silently throw away new descriptors that
  1457. haven't changed much if the timestamps are similar. We do this to
  1458. tolerate older Tor servers that upload a new descriptor every 15
  1459. minutes. (It seemed like a good idea at the time.)
  1460. - Inline bottleneck smartlist functions; use fast versions by default.
  1461. - Add a "Map from digest to void*" abstraction digestmap_t so we
  1462. can do less hex encoding/decoding. Use it in router_get_by_digest()
  1463. to resolve a performance bottleneck.
  1464. - Allow tor_gzip_uncompress to extract as much as possible from
  1465. truncated compressed data. Try to extract as many
  1466. descriptors as possible from truncated http responses (when
  1467. DIR_PURPOSE_FETCH_ROUTERDESC).
  1468. - Make circ->onionskin a pointer, not a static array. moria2 was using
  1469. 125000 circuit_t's after it had been up for a few weeks, which
  1470. translates to 20+ megs of wasted space.
  1471. - The private half of our EDH handshake keys are now chosen out
  1472. of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
  1473. o Security improvements:
  1474. - Start making directory caches retain old routerinfos, so soon
  1475. clients can start asking by digest of descriptor rather than by
  1476. fingerprint of server.
  1477. - Add half our entropy from RAND_poll in OpenSSL. This knows how
  1478. to use egd (if present), openbsd weirdness (if present), vms/os2
  1479. weirdness (if we ever port there), and more in the future.
  1480. o Bugfixes on 0.1.0.x:
  1481. - Do round-robin writes of at most 16 kB per write. This might be
  1482. more fair on loaded Tor servers, and it might resolve our Windows
  1483. crash bug. It might also slow things down.
  1484. - Our TLS handshakes were generating a single public/private
  1485. keypair for the TLS context, rather than making a new one for
  1486. each new connections. Oops. (But we were still rotating them
  1487. periodically, so it's not so bad.)
  1488. - When we were cannibalizing a circuit with a particular exit
  1489. node in mind, we weren't checking to see if that exit node was
  1490. already present earlier in the circuit. Oops.
  1491. - When a Tor server's IP changes (e.g. from a dyndns address),
  1492. upload a new descriptor so clients will learn too.
  1493. - Really busy servers were keeping enough circuits open on stable
  1494. connections that they were wrapping around the circuit_id
  1495. space. (It's only two bytes.) This exposed a bug where we would
  1496. feel free to reuse a circuit_id even if it still exists but has
  1497. been marked for close. Try to fix this bug. Some bug remains.
  1498. - If we would close a stream early (e.g. it asks for a .exit that
  1499. we know would refuse it) but the LeaveStreamsUnattached config
  1500. option is set by the controller, then don't close it.
  1501. o Bugfixes on 0.1.1.8-alpha:
  1502. - Fix a big pile of memory leaks, some of them serious.
  1503. - Do not try to download a routerdesc if we would immediately reject
  1504. it as obsolete.
  1505. - Resume inserting a newline between all router descriptors when
  1506. generating (old style) signed directories, since our spec says
  1507. we do.
  1508. - When providing content-type application/octet-stream for
  1509. server descriptors using .z, we were leaving out the
  1510. content-encoding header. Oops. (Everything tolerated this just
  1511. fine, but that doesn't mean we need to be part of the problem.)
  1512. - Fix a potential seg fault in getconf and getinfo using version 1
  1513. of the controller protocol.
  1514. - Avoid crash: do not check whether DirPort is reachable when we
  1515. are suppressing it because of hibernation.
  1516. - Make --hash-password not crash on exit.
  1517. Changes in version 0.1.1.8-alpha - 2005-10-07
  1518. o New features (major):
  1519. - Clients don't download or use the directory anymore. Now they
  1520. download and use network-statuses from the trusted dirservers,
  1521. and fetch individual server descriptors as needed from mirrors.
  1522. See dir-spec.txt for all the gory details.
  1523. - Be more conservative about whether to advertise our DirPort.
  1524. The main change is to not advertise if we're running at capacity
  1525. and either a) we could hibernate or b) our capacity is low and
  1526. we're using a default DirPort.
  1527. - Use OpenSSL's AES when OpenSSL has version 0.9.7 or later.
  1528. o New features (minor):
  1529. - Try to be smart about when to retry network-status and
  1530. server-descriptor fetches. Still needs some tuning.
  1531. - Stop parsing, storing, or using running-routers output (but
  1532. mirrors still cache and serve it).
  1533. - Consider a threshold of versioning dirservers (dirservers who have
  1534. an opinion about which Tor versions are still recommended) before
  1535. deciding whether to warn the user that he's obsolete.
  1536. - Dirservers can now reject/invalidate by key and IP, with the
  1537. config options "AuthDirInvalid" and "AuthDirReject". This is
  1538. useful since currently we automatically list servers as running
  1539. and usable even if we know they're jerks.
  1540. - Provide dire warnings to any users who set DirServer; move it out
  1541. of torrc.sample and into torrc.complete.
  1542. - Add MyFamily to torrc.sample in the server section.
  1543. - Add nicknames to the DirServer line, so we can refer to them
  1544. without requiring all our users to memorize their IP addresses.
  1545. - When we get an EOF or a timeout on a directory connection, note
  1546. how many bytes of serverdesc we are dropping. This will help
  1547. us determine whether it is smart to parse incomplete serverdesc
  1548. responses.
  1549. - Add a new function to "change pseudonyms" -- that is, to stop
  1550. using any currently-dirty circuits for new streams, so we don't
  1551. link new actions to old actions. Currently it's only called on
  1552. HUP (or SIGNAL RELOAD).
  1553. - On sighup, if UseHelperNodes changed to 1, use new circuits.
  1554. - Start using RAND_bytes rather than RAND_pseudo_bytes from
  1555. OpenSSL. Also, reseed our entropy every hour, not just at
  1556. startup. And entropy in 512-bit chunks, not 160-bit chunks.
  1557. o Fixes on 0.1.1.7-alpha:
  1558. - Nobody ever implemented EVENT_ADDRMAP for control protocol
  1559. version 0, so don't let version 0 controllers ask for it.
  1560. - If you requested something with too many newlines via the
  1561. v1 controller protocol, you could crash tor.
  1562. - Fix a number of memory leaks, including some pretty serious ones.
  1563. - Re-enable DirPort testing again, so Tor servers will be willing
  1564. to advertise their DirPort if it's reachable.
  1565. - On TLS handshake, only check the other router's nickname against
  1566. its expected nickname if is_named is set.
  1567. o Fixes forward-ported from 0.1.0.15:
  1568. - Don't crash when we don't have any spare file descriptors and we
  1569. try to spawn a dns or cpu worker.
  1570. - Make the numbers in read-history and write-history into uint64s,
  1571. so they don't overflow and publish negatives in the descriptor.
  1572. o Fixes on 0.1.0.x:
  1573. - For the OS X package's modified privoxy config file, comment
  1574. out the "logfile" line so we don't log everything passed
  1575. through privoxy.
  1576. - We were whining about using socks4 or socks5-with-local-lookup
  1577. even when it's an IP in the "virtual" range we designed exactly
  1578. for this case.
  1579. - We were leaking some memory every time the client changes IPs.
  1580. - Never call free() on tor_malloc()d memory. This will help us
  1581. use dmalloc to detect memory leaks.
  1582. - Check for named servers when looking them up by nickname;
  1583. warn when we'recalling a non-named server by its nickname;
  1584. don't warn twice about the same name.
  1585. - Try to list MyFamily elements by key, not by nickname, and warn
  1586. if we've not heard of the server.
  1587. - Make windows platform detection (uname equivalent) smarter.
  1588. - It turns out sparc64 doesn't like unaligned access either.
  1589. Changes in version 0.1.0.15 - 2005-09-23
  1590. o Bugfixes on 0.1.0.x:
  1591. - Reject ports 465 and 587 (spam targets) in default exit policy.
  1592. - Don't crash when we don't have any spare file descriptors and we
  1593. try to spawn a dns or cpu worker.
  1594. - Get rid of IgnoreVersion undocumented config option, and make us
  1595. only warn, never exit, when we're running an obsolete version.
  1596. - Don't try to print a null string when your server finds itself to
  1597. be unreachable and the Address config option is empty.
  1598. - Make the numbers in read-history and write-history into uint64s,
  1599. so they don't overflow and publish negatives in the descriptor.
  1600. - Fix a minor memory leak in smartlist_string_remove().
  1601. - We were only allowing ourselves to upload a server descriptor at
  1602. most every 20 minutes, even if it changed earlier than that.
  1603. - Clean up log entries that pointed to old URLs.
  1604. Changes in version 0.1.1.7-alpha - 2005-09-14
  1605. o Fixes on 0.1.1.6-alpha:
  1606. - Exit servers were crashing when people asked them to make a
  1607. connection to an address not in their exit policy.
  1608. - Looking up a non-existent stream for a v1 control connection would
  1609. cause a segfault.
  1610. - Fix a seg fault if we ask a dirserver for a descriptor by
  1611. fingerprint but he doesn't know about him.
  1612. - SETCONF was appending items to linelists, not clearing them.
  1613. - SETCONF SocksBindAddress killed Tor if it fails to bind. Now back
  1614. out and refuse the setconf if it would fail.
  1615. - Downgrade the dirserver log messages when whining about
  1616. unreachability.
  1617. o New features:
  1618. - Add Peter Palfrader's check-tor script to tor/contrib/
  1619. It lets you easily check whether a given server (referenced by
  1620. nickname) is reachable by you.
  1621. - Numerous changes to move towards client-side v2 directories. Not
  1622. enabled yet.
  1623. o Fixes on 0.1.0.x:
  1624. - If the user gave tor an odd number of command-line arguments,
  1625. we were silently ignoring the last one. Now we complain and fail.
  1626. [This wins the oldest-bug prize -- this bug has been present since
  1627. November 2002, as released in Tor 0.0.0.]
  1628. - Do not use unaligned memory access on alpha, mips, or mipsel.
  1629. It *works*, but is very slow, so we treat them as if it doesn't.
  1630. - Retry directory requests if we fail to get an answer we like
  1631. from a given dirserver (we were retrying before, but only if
  1632. we fail to connect).
  1633. - When writing the RecommendedVersions line, sort them first.
  1634. - When the client asked for a rendezvous port that the hidden
  1635. service didn't want to provide, we were sending an IP address
  1636. back along with the end cell. Fortunately, it was zero. But stop
  1637. that anyway.
  1638. - Correct "your server is reachable" log entries to indicate that
  1639. it was self-testing that told us so.
  1640. Changes in version 0.1.1.6-alpha - 2005-09-09
  1641. o Fixes on 0.1.1.5-alpha:
  1642. - We broke fascistfirewall in 0.1.1.5-alpha. Oops.
  1643. - Fix segfault in unit tests in 0.1.1.5-alpha. Oops.
  1644. - Fix bug with tor_memmem finding a match at the end of the string.
  1645. - Make unit tests run without segfaulting.
  1646. - Resolve some solaris x86 compile warnings.
  1647. - Handle duplicate lines in approved-routers files without warning.
  1648. - Fix bug where as soon as a server refused any requests due to his
  1649. exit policy (e.g. when we ask for localhost and he tells us that's
  1650. 127.0.0.1 and he won't do it), we decided he wasn't obeying his
  1651. exit policy using him for any exits.
  1652. - Only do openssl hardware accelerator stuff if openssl version is
  1653. at least 0.9.7.
  1654. o New controller features/fixes:
  1655. - Add a "RESETCONF" command so you can set config options like
  1656. AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
  1657. a config option in the torrc with no value, then it clears it
  1658. entirely (rather than setting it to its default).
  1659. - Add a "GETINFO config-file" to tell us where torrc is.
  1660. - Avoid sending blank lines when GETINFO replies should be empty.
  1661. - Add a QUIT command for the controller (for using it manually).
  1662. - Fix a bug in SAVECONF that was adding default dirservers and
  1663. other redundant entries to the torrc file.
  1664. o Start on the new directory design:
  1665. - Generate, publish, cache, serve new network-status format.
  1666. - Publish individual descriptors (by fingerprint, by "all", and by
  1667. "tell me yours").
  1668. - Publish client and server recommended versions separately.
  1669. - Allow tor_gzip_uncompress() to handle multiple concatenated
  1670. compressed strings. Serve compressed groups of router
  1671. descriptors. The compression logic here could be more
  1672. memory-efficient.
  1673. - Distinguish v1 authorities (all currently trusted directories)
  1674. from v2 authorities (all trusted directories).
  1675. - Change DirServers config line to note which dirs are v1 authorities.
  1676. - Add configuration option "V1AuthoritativeDirectory 1" which
  1677. moria1, moria2, and tor26 should set.
  1678. - Remove option when getting directory cache to see whether they
  1679. support running-routers; they all do now. Replace it with one
  1680. to see whether caches support v2 stuff.
  1681. o New features:
  1682. - Dirservers now do their own external reachability testing of each
  1683. Tor server, and only list them as running if they've been found to
  1684. be reachable. We also send back warnings to the server's logs if
  1685. it uploads a descriptor that we already believe is unreachable.
  1686. - Implement exit enclaves: if we know an IP address for the
  1687. destination, and there's a running Tor server at that address
  1688. which allows exit to the destination, then extend the circuit to
  1689. that exit first. This provides end-to-end encryption and end-to-end
  1690. authentication. Also, if the user wants a .exit address or enclave,
  1691. use 4 hops rather than 3, and cannibalize a general circ for it
  1692. if you can.
  1693. - Permit transitioning from ORPort=0 to ORPort!=0, and back, from the
  1694. controller. Also, rotate dns and cpu workers if the controller
  1695. changes options that will affect them; and initialize the dns
  1696. worker cache tree whether or not we start out as a server.
  1697. - Only upload a new server descriptor when options change, 18
  1698. hours have passed, uptime is reset, or bandwidth changes a lot.
  1699. - Check [X-]Forwarded-For headers in HTTP requests when generating
  1700. log messages. This lets people run dirservers (and caches) behind
  1701. Apache but still know which IP addresses are causing warnings.
  1702. o Config option changes:
  1703. - Replace (Fascist)Firewall* config options with a new
  1704. ReachableAddresses option that understands address policies.
  1705. For example, "ReachableAddresses *:80,*:443"
  1706. - Get rid of IgnoreVersion undocumented config option, and make us
  1707. only warn, never exit, when we're running an obsolete version.
  1708. - Make MonthlyAccountingStart config option truly obsolete now.
  1709. o Fixes on 0.1.0.x:
  1710. - Reject ports 465 and 587 in the default exit policy, since
  1711. people have started using them for spam too.
  1712. - It turns out we couldn't bootstrap a network since we added
  1713. reachability detection in 0.1.0.1-rc. Good thing the Tor network
  1714. has never gone down. Add an AssumeReachable config option to let
  1715. servers and dirservers bootstrap. When we're trying to build a
  1716. high-uptime or high-bandwidth circuit but there aren't enough
  1717. suitable servers, try being less picky rather than simply failing.
  1718. - Our logic to decide if the OR we connected to was the right guy
  1719. was brittle and maybe open to a mitm for unverified routers.
  1720. - We weren't cannibalizing circuits correctly for
  1721. CIRCUIT_PURPOSE_C_ESTABLISH_REND and
  1722. CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
  1723. build those from scratch. This should make hidden services faster.
  1724. - Predict required circuits better, with an eye toward making hidden
  1725. services faster on the service end.
  1726. - Retry streams if the exit node sends back a 'misc' failure. This
  1727. should result in fewer random failures. Also, after failing
  1728. from resolve failed or misc, reset the num failures, so we give
  1729. it a fair shake next time we try.
  1730. - Clean up the rendezvous warn log msgs, and downgrade some to info.
  1731. - Reduce severity on logs about dns worker spawning and culling.
  1732. - When we're shutting down and we do something like try to post a
  1733. server descriptor or rendezvous descriptor, don't complain that
  1734. we seem to be unreachable. Of course we are, we're shutting down.
  1735. - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
  1736. We don't use them yet, but maybe one day our DNS resolver will be
  1737. able to discover them.
  1738. - Make ContactInfo mandatory for authoritative directory servers.
  1739. - Require server descriptors to list IPv4 addresses -- hostnames
  1740. are no longer allowed. This also fixes some potential security
  1741. problems with people providing hostnames as their address and then
  1742. preferentially resolving them to partition users.
  1743. - Change log line for unreachability to explicitly suggest /etc/hosts
  1744. as the culprit. Also make it clearer what IP address and ports we're
  1745. testing for reachability.
  1746. - Put quotes around user-supplied strings when logging so users are
  1747. more likely to realize if they add bad characters (like quotes)
  1748. to the torrc.
  1749. - Let auth dir servers start without specifying an Address config
  1750. option.
  1751. - Make unit tests (and other invocations that aren't the real Tor)
  1752. run without launching listeners, creating subdirectories, and so on.
  1753. Changes in version 0.1.1.5-alpha - 2005-08-08
  1754. o Bugfixes included in 0.1.0.14.
  1755. o Bugfixes on 0.1.0.x:
  1756. - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
  1757. torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
  1758. it would silently using ignore the 6668.
  1759. Changes in version 0.1.0.14 - 2005-08-08
  1760. o Bugfixes on 0.1.0.x:
  1761. - Fix the other half of the bug with crypto handshakes
  1762. (CVE-2005-2643).
  1763. - Fix an assert trigger if you send a 'signal term' via the
  1764. controller when it's listening for 'event info' messages.
  1765. Changes in version 0.1.1.4-alpha - 2005-08-04
  1766. o Bugfixes included in 0.1.0.13.
  1767. o Features:
  1768. - Improve tor_gettimeofday() granularity on windows.
  1769. - Make clients regenerate their keys when their IP address changes.
  1770. - Implement some more GETINFO goodness: expose helper nodes, config
  1771. options, getinfo keys.
  1772. Changes in version 0.1.0.13 - 2005-08-04
  1773. o Bugfixes on 0.1.0.x:
  1774. - Fix a critical bug in the security of our crypto handshakes.
  1775. - Fix a size_t underflow in smartlist_join_strings2() that made
  1776. it do bad things when you hand it an empty smartlist.
  1777. - Fix Windows installer to ship Tor license (thanks to Aphex for
  1778. pointing out this oversight) and put a link to the doc directory
  1779. in the start menu.
  1780. - Explicitly set no-unaligned-access for sparc: it turns out the
  1781. new gcc's let you compile broken code, but that doesn't make it
  1782. not-broken.
  1783. Changes in version 0.1.1.3-alpha - 2005-07-23
  1784. o Bugfixes on 0.1.1.2-alpha:
  1785. - Fix a bug in handling the controller's "post descriptor"
  1786. function.
  1787. - Fix several bugs in handling the controller's "extend circuit"
  1788. function.
  1789. - Fix a bug in handling the controller's "stream status" event.
  1790. - Fix an assert failure if we have a controller listening for
  1791. circuit events and we go offline.
  1792. - Re-allow hidden service descriptors to publish 0 intro points.
  1793. - Fix a crash when generating your hidden service descriptor if
  1794. you don't have enough intro points already.
  1795. o New features on 0.1.1.2-alpha:
  1796. - New controller function "getinfo accounting", to ask how
  1797. many bytes we've used in this time period.
  1798. - Experimental support for helper nodes: a lot of the risk from
  1799. a small static adversary comes because users pick new random
  1800. nodes every time they rebuild a circuit. Now users will try to
  1801. stick to the same small set of entry nodes if they can. Not
  1802. enabled by default yet.
  1803. o Bugfixes on 0.1.0.12:
  1804. - If you're an auth dir server, always publish your dirport,
  1805. even if you haven't yet found yourself to be reachable.
  1806. - Fix a size_t underflow in smartlist_join_strings2() that made
  1807. it do bad things when you hand it an empty smartlist.
  1808. Changes in version 0.1.0.12 - 2005-07-18
  1809. o New directory servers:
  1810. - tor26 has changed IP address.
  1811. o Bugfixes on 0.1.0.x:
  1812. - Fix a possible double-free in tor_gzip_uncompress().
  1813. - When --disable-threads is set, do not search for or link against
  1814. pthreads libraries.
  1815. - Don't trigger an assert if an authoritative directory server
  1816. claims its dirport is 0.
  1817. - Fix bug with removing Tor as an NT service: some people were
  1818. getting "The service did not return an error." Thanks to Matt
  1819. Edman for the fix.
  1820. Changes in version 0.1.1.2-alpha - 2005-07-15
  1821. o New directory servers:
  1822. - tor26 has changed IP address.
  1823. o Bugfixes on 0.1.0.x, crashes/leaks:
  1824. - Port the servers-not-obeying-their-exit-policies fix from
  1825. 0.1.0.11.
  1826. - Fix an fd leak in start_daemon().
  1827. - On Windows, you can't always reopen a port right after you've
  1828. closed it. So change retry_listeners() to only close and re-open
  1829. ports that have changed.
  1830. - Fix a possible double-free in tor_gzip_uncompress().
  1831. o Bugfixes on 0.1.0.x, usability:
  1832. - When tor_socketpair() fails in Windows, give a reasonable
  1833. Windows-style errno back.
  1834. - Let people type "tor --install" as well as "tor -install" when
  1835. they
  1836. want to make it an NT service.
  1837. - NT service patch from Matt Edman to improve error messages.
  1838. - When the controller asks for a config option with an abbreviated
  1839. name, give the full name in our response.
  1840. - Correct the man page entry on TrackHostExitsExpire.
  1841. - Looks like we were never delivering deflated (i.e. compressed)
  1842. running-routers lists, even when asked. Oops.
  1843. - When --disable-threads is set, do not search for or link against
  1844. pthreads libraries.
  1845. o Bugfixes on 0.1.1.x:
  1846. - Fix a seg fault with autodetecting which controller version is
  1847. being used.
  1848. o Features:
  1849. - New hidden service descriptor format: put a version in it, and
  1850. let people specify introduction/rendezvous points that aren't
  1851. in "the directory" (which is subjective anyway).
  1852. - Allow the DEBUG controller event to work again. Mark certain log
  1853. entries as "don't tell this to controllers", so we avoid cycles.
  1854. Changes in version 0.1.0.11 - 2005-06-30
  1855. o Bugfixes on 0.1.0.x:
  1856. - Fix major security bug: servers were disregarding their
  1857. exit policies if clients behaved unexpectedly.
  1858. - Make OS X init script check for missing argument, so we don't
  1859. confuse users who invoke it incorrectly.
  1860. - Fix a seg fault in "tor --hash-password foo".
  1861. - The MAPADDRESS control command was broken.
  1862. Changes in version 0.1.1.1-alpha - 2005-06-29
  1863. o Bugfixes:
  1864. - Make OS X init script check for missing argument, so we don't
  1865. confuse users who invoke it incorrectly.
  1866. - Fix a seg fault in "tor --hash-password foo".
  1867. - Fix a possible way to DoS dirservers.
  1868. - When we complain that your exit policy implicitly allows local or
  1869. private address spaces, name them explicitly so operators can
  1870. fix it.
  1871. - Make the log message less scary when all the dirservers are
  1872. temporarily unreachable.
  1873. - We were printing the number of idle dns workers incorrectly when
  1874. culling them.
  1875. o Features:
  1876. - Revised controller protocol (version 1) that uses ascii rather
  1877. than binary. Add supporting libraries in python and java so you
  1878. can use the controller from your applications without caring how
  1879. our protocol works.
  1880. - Spiffy new support for crypto hardware accelerators. Can somebody
  1881. test this?
  1882. Changes in version 0.0.9.10 - 2005-06-16
  1883. o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
  1884. - Refuse relay cells that claim to have a length larger than the
  1885. maximum allowed. This prevents a potential attack that could read
  1886. arbitrary memory (e.g. keys) from an exit server's process
  1887. (CVE-2005-2050).
  1888. Changes in version 0.1.0.10 - 2005-06-14
  1889. o Allow a few EINVALs from libevent before dying. Warn on kqueue with
  1890. libevent before 1.1a.
  1891. Changes in version 0.1.0.9-rc - 2005-06-09
  1892. o Bugfixes:
  1893. - Reset buf->highwater every time buf_shrink() is called, not just on
  1894. a successful shrink. This was causing significant memory bloat.
  1895. - Fix buffer overflow when checking hashed passwords.
  1896. - Security fix: if seeding the RNG on Win32 fails, quit.
  1897. - Allow seeding the RNG on Win32 even when you're not running as
  1898. Administrator.
  1899. - Disable threading on Solaris too. Something is wonky with it,
  1900. cpuworkers, and reentrant libs.
  1901. - Reenable the part of the code that tries to flush as soon as an
  1902. OR outbuf has a full TLS record available. Perhaps this will make
  1903. OR outbufs not grow as huge except in rare cases, thus saving lots
  1904. of CPU time plus memory.
  1905. - Reject malformed .onion addresses rather then passing them on as
  1906. normal web requests.
  1907. - Adapt patch from Adam Langley: fix possible memory leak in
  1908. tor_lookup_hostname().
  1909. - Initialize libevent later in the startup process, so the logs are
  1910. already established by the time we start logging libevent warns.
  1911. - Use correct errno on win32 if libevent fails.
  1912. - Check and warn about known-bad/slow libevent versions.
  1913. - Pay more attention to the ClientOnly config option.
  1914. - Have torctl.in/tor.sh.in check for location of su binary (needed
  1915. on FreeBSD)
  1916. - Correct/add man page entries for LongLivedPorts, ExitPolicy,
  1917. KeepalivePeriod, ClientOnly, NoPublish, HttpProxy, HttpsProxy,
  1918. HttpProxyAuthenticator
  1919. - Stop warning about sigpipes in the logs. We're going to
  1920. pretend that getting these occassionally is normal and fine.
  1921. - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in
  1922. certain
  1923. installer screens; and don't put stuff into StartupItems unless
  1924. the user asks you to.
  1925. - Require servers that use the default dirservers to have public IP
  1926. addresses. We have too many servers that are configured with private
  1927. IPs and their admins never notice the log entries complaining that
  1928. their descriptors are being rejected.
  1929. - Add OSX uninstall instructions. An actual uninstall script will
  1930. come later.
  1931. Changes in version 0.1.0.8-rc - 2005-05-23
  1932. o Bugfixes:
  1933. - It turns out that kqueue on OS X 10.3.9 was causing kernel
  1934. panics. Disable kqueue on all OS X Tors.
  1935. - Fix RPM: remove duplicate line accidentally added to the rpm
  1936. spec file.
  1937. - Disable threads on openbsd too, since its gethostaddr is not
  1938. reentrant either.
  1939. - Tolerate libevent 0.8 since it still works, even though it's
  1940. ancient.
  1941. - Enable building on Red Hat 9.0 again.
  1942. - Allow the middle hop of the testing circuit to be running any
  1943. version, now that most of them have the bugfix to let them connect
  1944. to unknown servers. This will allow reachability testing to work
  1945. even when 0.0.9.7-0.0.9.9 become obsolete.
  1946. - Handle relay cells with rh.length too large. This prevents
  1947. a potential attack that could read arbitrary memory (maybe even
  1948. keys) from the exit server's process.
  1949. - We screwed up the dirport reachability testing when we don't yet
  1950. have a cached version of the directory. Hopefully now fixed.
  1951. - Clean up router_load_single_router() (used by the controller),
  1952. so it doesn't seg fault on error.
  1953. - Fix a minor memory leak when somebody establishes an introduction
  1954. point at your Tor server.
  1955. - If a socks connection ends because read fails, don't warn that
  1956. you're not sending a socks reply back.
  1957. o Features:
  1958. - Add HttpProxyAuthenticator config option too, that works like
  1959. the HttpsProxyAuthenticator config option.
  1960. - Encode hashed controller passwords in hex instead of base64,
  1961. to make it easier to write controllers.
  1962. Changes in version 0.1.0.7-rc - 2005-05-17
  1963. o Bugfixes:
  1964. - Fix a bug in the OS X package installer that prevented it from
  1965. installing on Tiger.
  1966. - Fix a script bug in the OS X package installer that made it
  1967. complain during installation.
  1968. - Find libevent even if it's hiding in /usr/local/ and your
  1969. CFLAGS and LDFLAGS don't tell you to look there.
  1970. - Be able to link with libevent as a shared library (the default
  1971. after 1.0d), even if it's hiding in /usr/local/lib and even
  1972. if you haven't added /usr/local/lib to your /etc/ld.so.conf,
  1973. assuming you're running gcc. Otherwise fail and give a useful
  1974. error message.
  1975. - Fix a bug in the RPM packager: set home directory for _tor to
  1976. something more reasonable when first installing.
  1977. - Free a minor amount of memory that is still reachable on exit.
  1978. Changes in version 0.1.0.6-rc - 2005-05-14
  1979. o Bugfixes:
  1980. - Implement --disable-threads configure option. Disable threads on
  1981. netbsd by default, because it appears to have no reentrant resolver
  1982. functions.
  1983. - Apple's OS X 10.4.0 ships with a broken kqueue. The new libevent
  1984. release (1.1) detects and disables kqueue if it's broken.
  1985. - Append default exit policy before checking for implicit internal
  1986. addresses. Now we don't log a bunch of complaints on startup
  1987. when using the default exit policy.
  1988. - Some people were putting "Address " in their torrc, and they had
  1989. a buggy resolver that resolved " " to 0.0.0.0. Oops.
  1990. - If DataDir is ~/.tor, and that expands to /.tor, then default to
  1991. LOCALSTATEDIR/tor instead.
  1992. - Fix fragmented-message bug in TorControl.py.
  1993. - Resolve a minor bug which would prevent unreachable dirports
  1994. from getting suppressed in the published descriptor.
  1995. - When the controller gave us a new descriptor, we weren't resolving
  1996. it immediately, so Tor would think its address was 0.0.0.0 until
  1997. we fetched a new directory.
  1998. - Fix an uppercase/lowercase case error in suppressing a bogus
  1999. libevent warning on some Linuxes.
  2000. o Features:
  2001. - Begin scrubbing sensitive strings from logs by default. Turn off
  2002. the config option SafeLogging if you need to do debugging.
  2003. - Switch to a new buffer management algorithm, which tries to avoid
  2004. reallocing and copying quite as much. In first tests it looks like
  2005. it uses *more* memory on average, but less cpu.
  2006. - First cut at support for "create-fast" cells. Clients can use
  2007. these when extending to their first hop, since the TLS already
  2008. provides forward secrecy and authentication. Not enabled on
  2009. clients yet.
  2010. - When dirservers refuse a router descriptor, we now log its
  2011. contactinfo, platform, and the poster's IP address.
  2012. - Call tor_free_all instead of connections_free_all after forking, to
  2013. save memory on systems that need to fork.
  2014. - Whine at you if you're a server and you don't set your contactinfo.
  2015. - Implement --verify-config command-line option to check if your torrc
  2016. is valid without actually launching Tor.
  2017. - Rewrite address "serifos.exit" to "localhost.serifos.exit"
  2018. rather than just rejecting it.
  2019. Changes in version 0.1.0.5-rc - 2005-04-27
  2020. o Bugfixes:
  2021. - Stop trying to print a null pointer if an OR conn fails because
  2022. we didn't like its cert.
  2023. o Features:
  2024. - Switch our internal buffers implementation to use a ring buffer,
  2025. to hopefully improve performance for fast servers a lot.
  2026. - Add HttpsProxyAuthenticator support (basic auth only), based
  2027. on patch from Adam Langley.
  2028. - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
  2029. the fast servers that have been joining lately.
  2030. - Give hidden service accesses extra time on the first attempt,
  2031. since 60 seconds is often only barely enough. This might improve
  2032. robustness more.
  2033. - Improve performance for dirservers: stop re-parsing the whole
  2034. directory every time you regenerate it.
  2035. - Add more debugging info to help us find the weird dns freebsd
  2036. pthreads bug; cleaner debug messages to help track future issues.
  2037. Changes in version 0.0.9.9 - 2005-04-23
  2038. o Bugfixes on 0.0.9.x:
  2039. - If unofficial Tor clients connect and send weird TLS certs, our
  2040. Tor server triggers an assert. This release contains a minimal
  2041. backport from the broader fix that we put into 0.1.0.4-rc.
  2042. Changes in version 0.1.0.4-rc - 2005-04-23
  2043. o Bugfixes:
  2044. - If unofficial Tor clients connect and send weird TLS certs, our
  2045. Tor server triggers an assert. Stop asserting, and start handling
  2046. TLS errors better in other situations too.
  2047. - When the controller asks us to tell it about all the debug-level
  2048. logs, it turns out we were generating debug-level logs while
  2049. telling it about them, which turns into a bad loop. Now keep
  2050. track of whether you're sending a debug log to the controller,
  2051. and don't log when you are.
  2052. - Fix the "postdescriptor" feature of the controller interface: on
  2053. non-complete success, only say "done" once.
  2054. o Features:
  2055. - Clients are now willing to load balance over up to 2mB, not 1mB,
  2056. of advertised bandwidth capacity.
  2057. - Add a NoPublish config option, so you can be a server (e.g. for
  2058. testing running Tor servers in other Tor networks) without
  2059. publishing your descriptor to the primary dirservers.
  2060. Changes in version 0.1.0.3-rc - 2005-04-08
  2061. o Improvements on 0.1.0.2-rc:
  2062. - Client now retries when streams end early for 'hibernating' or
  2063. 'resource limit' reasons, rather than failing them.
  2064. - More automated handling for dirserver operators:
  2065. - Automatically approve nodes running 0.1.0.2-rc or later,
  2066. now that the the reachability detection stuff is working.
  2067. - Now we allow two unverified servers with the same nickname
  2068. but different keys. But if a nickname is verified, only that
  2069. nickname+key are allowed.
  2070. - If you're an authdirserver connecting to an address:port,
  2071. and it's not the OR you were expecting, forget about that
  2072. descriptor. If he *was* the one you were expecting, then forget
  2073. about all other descriptors for that address:port.
  2074. - Allow servers to publish descriptors from 12 hours in the future.
  2075. Corollary: only whine about clock skew from the dirserver if
  2076. he's a trusted dirserver (since now even verified servers could
  2077. have quite wrong clocks).
  2078. - Adjust maximum skew and age for rendezvous descriptors: let skew
  2079. be 48 hours rather than 90 minutes.
  2080. - Efficiency improvements:
  2081. - Keep a big splay tree of (circid,orconn)->circuit mappings to make
  2082. it much faster to look up a circuit for each relay cell.
  2083. - Remove most calls to assert_all_pending_dns_resolves_ok(),
  2084. since they're eating our cpu on exit nodes.
  2085. - Stop wasting time doing a case insensitive comparison for every
  2086. dns name every time we do any lookup. Canonicalize the names to
  2087. lowercase and be done with it.
  2088. - Start sending 'truncated' cells back rather than destroy cells,
  2089. if the circuit closes in front of you. This means we won't have
  2090. to abandon partially built circuits.
  2091. - Only warn once per nickname from add_nickname_list_to_smartlist
  2092. per failure, so an entrynode or exitnode choice that's down won't
  2093. yell so much.
  2094. - Put a note in the torrc about abuse potential with the default
  2095. exit policy.
  2096. - Revise control spec and implementation to allow all log messages to
  2097. be sent to controller with their severities intact (suggested by
  2098. Matt Edman). Update TorControl to handle new log event types.
  2099. - Provide better explanation messages when controller's POSTDESCRIPTOR
  2100. fails.
  2101. - Stop putting nodename in the Platform string in server descriptors.
  2102. It doesn't actually help, and it is confusing/upsetting some people.
  2103. o Bugfixes on 0.1.0.2-rc:
  2104. - We were printing the host mask wrong in exit policies in server
  2105. descriptors. This isn't a critical bug though, since we were still
  2106. obeying the exit policy internally.
  2107. - Fix Tor when compiled with libevent but without pthreads: move
  2108. connection_unregister() from _connection_free() to
  2109. connection_free().
  2110. - Fix an assert trigger (already fixed in 0.0.9.x): when we have
  2111. the rare mysterious case of accepting a conn on 0.0.0.0:0, then
  2112. when we look through the connection array, we'll find any of the
  2113. cpu/dnsworkers. This is no good.
  2114. o Bugfixes on 0.0.9.8:
  2115. - Fix possible bug on threading platforms (e.g. win32) which was
  2116. leaking a file descriptor whenever a cpuworker or dnsworker died.
  2117. - When using preferred entry or exit nodes, ignore whether the
  2118. circuit wants uptime or capacity. They asked for the nodes, they
  2119. get the nodes.
  2120. - chdir() to your datadirectory at the *end* of the daemonize process,
  2121. not the beginning. This was a problem because the first time you
  2122. run tor, if your datadir isn't there, and you have runasdaemon set
  2123. to 1, it will try to chdir to it before it tries to create it. Oops.
  2124. - Handle changed router status correctly when dirserver reloads
  2125. fingerprint file. We used to be dropping all unverified descriptors
  2126. right then. The bug was hidden because we would immediately
  2127. fetch a directory from another dirserver, which would include the
  2128. descriptors we just dropped.
  2129. - When we're connecting to an OR and he's got a different nickname/key
  2130. than we were expecting, only complain loudly if we're an OP or a
  2131. dirserver. Complaining loudly to the OR admins just confuses them.
  2132. - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
  2133. artificially capped at 500kB.
  2134. Changes in version 0.0.9.8 - 2005-04-07
  2135. o Bugfixes on 0.0.9.x:
  2136. - We have a bug that I haven't found yet. Sometimes, very rarely,
  2137. cpuworkers get stuck in the 'busy' state, even though the cpuworker
  2138. thinks of itself as idle. This meant that no new circuits ever got
  2139. established. Here's a workaround to kill any cpuworker that's been
  2140. busy for more than 100 seconds.
  2141. Changes in version 0.1.0.2-rc - 2005-04-01
  2142. o Bugfixes on 0.1.0.1-rc:
  2143. - Fixes on reachability detection:
  2144. - Don't check for reachability while hibernating.
  2145. - If ORPort is reachable but DirPort isn't, still publish the
  2146. descriptor, but zero out DirPort until it's found reachable.
  2147. - When building testing circs for ORPort testing, use only
  2148. high-bandwidth nodes, so fewer circuits fail.
  2149. - Complain about unreachable ORPort separately from unreachable
  2150. DirPort, so the user knows what's going on.
  2151. - Make sure we only conclude ORPort reachability if we didn't
  2152. initiate the conn. Otherwise we could falsely conclude that
  2153. we're reachable just because we connected to the guy earlier
  2154. and he used that same pipe to extend to us.
  2155. - Authdirservers shouldn't do ORPort reachability detection,
  2156. since they're in clique mode, so it will be rare to find a
  2157. server not already connected to them.
  2158. - When building testing circuits, always pick middle hops running
  2159. Tor 0.0.9.7, so we avoid the "can't extend to unknown routers"
  2160. bug. (This is a kludge; it will go away when 0.0.9.x becomes
  2161. obsolete.)
  2162. - When we decide we're reachable, actually publish our descriptor
  2163. right then.
  2164. - Fix bug in redirectstream in the controller.
  2165. - Fix the state descriptor strings so logs don't claim edge streams
  2166. are in a different state than they actually are.
  2167. - Use recent libevent features when possible (this only really affects
  2168. win32 and osx right now, because the new libevent with these
  2169. features hasn't been released yet). Add code to suppress spurious
  2170. libevent log msgs.
  2171. - Prevent possible segfault in connection_close_unattached_ap().
  2172. - Fix newlines on torrc in win32.
  2173. - Improve error msgs when tor-resolve fails.
  2174. o Improvements on 0.0.9.x:
  2175. - New experimental script tor/contrib/ExerciseServer.py (needs more
  2176. work) that uses the controller interface to build circuits and
  2177. fetch pages over them. This will help us bootstrap servers that
  2178. have lots of capacity but haven't noticed it yet.
  2179. - New experimental script tor/contrib/PathDemo.py (needs more work)
  2180. that uses the controller interface to let you choose whole paths
  2181. via addresses like
  2182. "<hostname>.<path,separated by dots>.<length of path>.path"
  2183. - When we've connected to an OR and handshaked but didn't like
  2184. the result, we were closing the conn without sending destroy
  2185. cells back for pending circuits. Now send those destroys.
  2186. Changes in version 0.0.9.7 - 2005-04-01
  2187. o Bugfixes on 0.0.9.x:
  2188. - Fix another race crash bug (thanks to Glenn Fink for reporting).
  2189. - Compare identity to identity, not to nickname, when extending to
  2190. a router not already in the directory. This was preventing us from
  2191. extending to unknown routers. Oops.
  2192. - Make sure to create OS X Tor user in <500 range, so we aren't
  2193. creating actual system users.
  2194. - Note where connection-that-hasn't-sent-end was marked, and fix
  2195. a few really loud instances of this harmless bug (it's fixed more
  2196. in 0.1.0.x).
  2197. Changes in version 0.1.0.1-rc - 2005-03-28
  2198. o New features:
  2199. - Add reachability testing. Your Tor server will automatically try
  2200. to see if its ORPort and DirPort are reachable from the outside,
  2201. and it won't upload its descriptor until it decides they are.
  2202. - Handle unavailable hidden services better. Handle slow or busy
  2203. hidden services better.
  2204. - Add support for CONNECTing through https proxies, with "HttpsProxy"
  2205. config option.
  2206. - New exit policy: accept most low-numbered ports, rather than
  2207. rejecting most low-numbered ports.
  2208. - More Tor controller support (still experimental). See
  2209. http://tor.eff.org/doc/control-spec.txt for all the new features,
  2210. including signals to emulate unix signals from any platform;
  2211. redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
  2212. closestream; closecircuit; etc.
  2213. - Make nt services work and start on startup on win32 (based on
  2214. patch by Matt Edman).
  2215. - Add a new AddressMap config directive to rewrite incoming socks
  2216. addresses. This lets you, for example, declare an implicit
  2217. required exit node for certain sites.
  2218. - Add a new TrackHostExits config directive to trigger addressmaps
  2219. for certain incoming socks addresses -- for sites that break when
  2220. your exit keeps changing (based on patch by Mike Perry).
  2221. - Redo the client-side dns cache so it's just an addressmap too.
  2222. - Notice when our IP changes, and reset stats/uptime/reachability.
  2223. - When an application is using socks5, give him the whole variety of
  2224. potential socks5 responses (connect refused, host unreachable, etc),
  2225. rather than just "success" or "failure".
  2226. - A more sane version numbering system. See
  2227. http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
  2228. - New contributed script "exitlist": a simple python script to
  2229. parse directories and find Tor nodes that exit to listed
  2230. addresses/ports.
  2231. - New contributed script "privoxy-tor-toggle" to toggle whether
  2232. Privoxy uses Tor. Seems to be configured for Debian by default.
  2233. - Report HTTP reasons to client when getting a response from directory
  2234. servers -- so you can actually know what went wrong.
  2235. - New config option MaxAdvertisedBandwidth which lets you advertise
  2236. a low bandwidthrate (to not attract as many circuits) while still
  2237. allowing a higher bandwidthrate in reality.
  2238. o Robustness/stability fixes:
  2239. - Make Tor use Niels Provos's libevent instead of its current
  2240. poll-but-sometimes-select mess. This will let us use faster async
  2241. cores (like epoll, kpoll, and /dev/poll), and hopefully work better
  2242. on Windows too.
  2243. - pthread support now too. This was forced because when we forked,
  2244. we ended up wasting a lot of duplicate ram over time. Also switch
  2245. to foo_r versions of some library calls to allow reentry and
  2246. threadsafeness.
  2247. - Better handling for heterogeneous / unreliable nodes:
  2248. - Annotate circuits w/ whether they aim to contain high uptime nodes
  2249. and/or high capacity nodes. When building circuits, choose
  2250. appropriate nodes.
  2251. - This means that every single node in an intro rend circuit,
  2252. not just the last one, will have a minimum uptime.
  2253. - New config option LongLivedPorts to indicate application streams
  2254. that will want high uptime circuits.
  2255. - Servers reset uptime when a dir fetch entirely fails. This
  2256. hopefully reflects stability of the server's network connectivity.
  2257. - If somebody starts his tor server in Jan 2004 and then fixes his
  2258. clock, don't make his published uptime be a year.
  2259. - Reset published uptime when you wake up from hibernation.
  2260. - Introduce a notion of 'internal' circs, which are chosen without
  2261. regard to the exit policy of the last hop. Intro and rendezvous
  2262. circs must be internal circs, to avoid leaking information. Resolve
  2263. and connect streams can use internal circs if they want.
  2264. - New circuit pooling algorithm: make sure to have enough circs around
  2265. to satisfy any predicted ports, and also make sure to have 2 internal
  2266. circs around if we've required internal circs lately (and with high
  2267. uptime if we've seen that lately too).
  2268. - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
  2269. which describes how often we retry making new circuits if current
  2270. ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
  2271. how long we're willing to make use of an already-dirty circuit.
  2272. - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
  2273. circ as necessary, if there are any completed ones lying around
  2274. when we try to launch one.
  2275. - Make hidden services try to establish a rendezvous for 30 seconds,
  2276. rather than for n (where n=3) attempts to build a circuit.
  2277. - Change SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to a config option
  2278. "ShutdownWaitLength".
  2279. - Try to be more zealous about calling connection_edge_end when
  2280. things go bad with edge conns in connection.c.
  2281. - Revise tor-spec to add more/better stream end reasons.
  2282. - Revise all calls to connection_edge_end to avoid sending "misc",
  2283. and to take errno into account where possible.
  2284. o Bug fixes:
  2285. - Fix a race condition that can trigger an assert, when we have a
  2286. pending create cell and an OR connection fails right then.
  2287. - Fix several double-mark-for-close bugs, e.g. where we were finding
  2288. a conn for a cell even if that conn is already marked for close.
  2289. - Make sequence of log messages when starting on win32 with no config
  2290. file more reasonable.
  2291. - When choosing an exit node for a new non-internal circ, don't take
  2292. into account whether it'll be useful for any pending x.onion
  2293. addresses -- it won't.
  2294. - Turn addr_policy_compare from a tristate to a quadstate; this should
  2295. help address our "Ah, you allow 1.2.3.4:80. You are a good choice
  2296. for google.com" problem.
  2297. - Make "platform" string in descriptor more accurate for Win32 servers,
  2298. so it's not just "unknown platform".
  2299. - Fix an edge case in parsing config options (thanks weasel).
  2300. If they say "--" on the commandline, it's not an option.
  2301. - Reject odd-looking addresses at the client (e.g. addresses that
  2302. contain a colon), rather than having the server drop them because
  2303. they're malformed.
  2304. - tor-resolve requests were ignoring .exit if there was a working circuit
  2305. they could use instead.
  2306. - REUSEADDR on normal platforms means you can rebind to the port
  2307. right after somebody else has let it go. But REUSEADDR on win32
  2308. means to let you bind to the port _even when somebody else
  2309. already has it bound_! So, don't do that on Win32.
  2310. - Change version parsing logic: a version is "obsolete" if it is not
  2311. recommended and (1) there is a newer recommended version in the
  2312. same series, or (2) there are no recommended versions in the same
  2313. series, but there are some recommended versions in a newer series.
  2314. A version is "new" if it is newer than any recommended version in
  2315. the same series.
  2316. - Stop most cases of hanging up on a socks connection without sending
  2317. the socks reject.
  2318. o Helpful fixes:
  2319. - Require BandwidthRate to be at least 20kB/s for servers.
  2320. - When a dirserver causes you to give a warn, mention which dirserver
  2321. it was.
  2322. - New config option DirAllowPrivateAddresses for authdirservers.
  2323. Now by default they refuse router descriptors that have non-IP or
  2324. private-IP addresses.
  2325. - Stop publishing socksport in the directory, since it's not
  2326. actually meant to be public. For compatibility, publish a 0 there
  2327. for now.
  2328. - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
  2329. smart" value, that is low for servers and high for clients.
  2330. - If our clock jumps forward by 100 seconds or more, assume something
  2331. has gone wrong with our network and abandon all not-yet-used circs.
  2332. - Warn when exit policy implicitly allows local addresses.
  2333. - If we get an incredibly skewed timestamp from a dirserver mirror
  2334. that isn't a verified OR, don't warn -- it's probably him that's
  2335. wrong.
  2336. - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
  2337. cookies to disk and doesn't log each web request to disk. (Thanks
  2338. to Brett Carrington for pointing this out.)
  2339. - When a client asks us for a dir mirror and we don't have one,
  2340. launch an attempt to get a fresh one.
  2341. - If we're hibernating and we get a SIGINT, exit immediately.
  2342. - Add --with-dmalloc ./configure option, to track memory leaks.
  2343. - And try to free all memory on closing, so we can detect what
  2344. we're leaking.
  2345. - Cache local dns resolves correctly even when they're .exit
  2346. addresses.
  2347. - Give a better warning when some other server advertises an
  2348. ORPort that is actually an apache running ssl.
  2349. - Add "opt hibernating 1" to server descriptor to make it clearer
  2350. whether the server is hibernating.
  2351. Changes in version 0.0.9.6 - 2005-03-24
  2352. o Bugfixes on 0.0.9.x (crashes and asserts):
  2353. - Add new end stream reasons to maintainance branch. Fix bug where
  2354. reason (8) could trigger an assert. Prevent bug from recurring.
  2355. - Apparently win32 stat wants paths to not end with a slash.
  2356. - Fix assert triggers in assert_cpath_layer_ok(), where we were
  2357. blowing away the circuit that conn->cpath_layer points to, then
  2358. checking to see if the circ is well-formed. Backport check to make
  2359. sure we dont use the cpath on a closed connection.
  2360. - Prevent circuit_resume_edge_reading_helper() from trying to package
  2361. inbufs for marked-for-close streams.
  2362. - Don't crash on hup if your options->address has become unresolvable.
  2363. - Some systems (like OS X) sometimes accept() a connection and tell
  2364. you the remote host is 0.0.0.0:0. If this happens, due to some
  2365. other mis-features, we get confused; so refuse the conn for now.
  2366. o Bugfixes on 0.0.9.x (other):
  2367. - Fix harmless but scary "Unrecognized content encoding" warn message.
  2368. - Add new stream error reason: TORPROTOCOL reason means "you are not
  2369. speaking a version of Tor I understand; say bye-bye to your stream."
  2370. - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
  2371. into the future, now that we are more tolerant of skew. This
  2372. resolves a bug where a Tor server would refuse to cache a directory
  2373. because all the directories it gets are too far in the future;
  2374. yet the Tor server never logs any complaints about clock skew.
  2375. - Mac packaging magic: make man pages useable, and do not overwrite
  2376. existing torrc files.
  2377. - Make OS X log happily to /var/log/tor/tor.log
  2378. Changes in version 0.0.9.5 - 2005-02-22
  2379. o Bugfixes on 0.0.9.x:
  2380. - Fix an assert race at exit nodes when resolve requests fail.
  2381. - Stop picking unverified dir mirrors--it only leads to misery.
  2382. - Patch from Matt Edman to make NT services work better. Service
  2383. support is still not compiled into the executable by default.
  2384. - Patch from Dmitri Bely so the Tor service runs better under
  2385. the win32 SYSTEM account.
  2386. - Make tor-resolve actually work (?) on Win32.
  2387. - Fix a sign bug when getrlimit claims to have 4+ billion
  2388. file descriptors available.
  2389. - Stop refusing to start when bandwidthburst == bandwidthrate.
  2390. - When create cells have been on the onion queue more than five
  2391. seconds, just send back a destroy and take them off the list.
  2392. Changes in version 0.0.9.4 - 2005-02-03
  2393. o Bugfixes on 0.0.9:
  2394. - Fix an assert bug that took down most of our servers: when
  2395. a server claims to have 1 GB of bandwidthburst, don't
  2396. freak out.
  2397. - Don't crash as badly if we have spawned the max allowed number
  2398. of dnsworkers, or we're out of file descriptors.
  2399. - Block more file-sharing ports in the default exit policy.
  2400. - MaxConn is now automatically set to the hard limit of max
  2401. file descriptors we're allowed (ulimit -n), minus a few for
  2402. logs, etc.
  2403. - Give a clearer message when servers need to raise their
  2404. ulimit -n when they start running out of file descriptors.
  2405. - SGI Compatibility patches from Jan Schaumann.
  2406. - Tolerate a corrupt cached directory better.
  2407. - When a dirserver hasn't approved your server, list which one.
  2408. - Go into soft hibernation after 95% of the bandwidth is used,
  2409. not 99%. This is especially important for daily hibernators who
  2410. have a small accounting max. Hopefully it will result in fewer
  2411. cut connections when the hard hibernation starts.
  2412. - Load-balance better when using servers that claim more than
  2413. 800kB/s of capacity.
  2414. - Make NT services work (experimental, only used if compiled in).
  2415. Changes in version 0.0.9.3 - 2005-01-21
  2416. o Bugfixes on 0.0.9:
  2417. - Backport the cpu use fixes from main branch, so busy servers won't
  2418. need as much processor time.
  2419. - Work better when we go offline and then come back, or when we
  2420. run Tor at boot before the network is up. We do this by
  2421. optimistically trying to fetch a new directory whenever an
  2422. application request comes in and we think we're offline -- the
  2423. human is hopefully a good measure of when the network is back.
  2424. - Backport some minimal hidserv bugfixes: keep rend circuits open as
  2425. long as you keep using them; actually publish hidserv descriptors
  2426. shortly after they change, rather than waiting 20-40 minutes.
  2427. - Enable Mac startup script by default.
  2428. - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
  2429. - When you update AllowUnverifiedNodes or FirewallPorts via the
  2430. controller's setconf feature, we were always appending, never
  2431. resetting.
  2432. - When you update HiddenServiceDir via setconf, it was screwing up
  2433. the order of reading the lines, making it fail.
  2434. - Do not rewrite a cached directory back to the cache; otherwise we
  2435. will think it is recent and not fetch a newer one on startup.
  2436. - Workaround for webservers that lie about Content-Encoding: Tor
  2437. now tries to autodetect compressed directories and compression
  2438. itself. This lets us Proxypass dir fetches through apache.
  2439. Changes in version 0.0.9.2 - 2005-01-04
  2440. o Bugfixes on 0.0.9 (crashes and asserts):
  2441. - Fix an assert on startup when the disk is full and you're logging
  2442. to a file.
  2443. - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
  2444. style address, then we'd crash.
  2445. - Fix an assert trigger when the running-routers string we get from
  2446. a dirserver is broken.
  2447. - Make worker threads start and run on win32. Now win32 servers
  2448. may work better.
  2449. - Bandaid (not actually fix, but now it doesn't crash) an assert
  2450. where the dns worker dies mysteriously and the main Tor process
  2451. doesn't remember anything about the address it was resolving.
  2452. o Bugfixes on 0.0.9 (Win32):
  2453. - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
  2454. name out of the warning/assert messages.
  2455. - Fix a superficial "unhandled error on read" bug on win32.
  2456. - The win32 installer no longer requires a click-through for our
  2457. license, since our Free Software license grants rights but does not
  2458. take any away.
  2459. - Win32: When connecting to a dirserver fails, try another one
  2460. immediately. (This was already working for non-win32 Tors.)
  2461. - Stop trying to parse $HOME on win32 when hunting for default
  2462. DataDirectory.
  2463. - Make tor-resolve.c work on win32 by calling network_init().
  2464. o Bugfixes on 0.0.9 (other):
  2465. - Make 0.0.9.x build on Solaris again.
  2466. - Due to a fencepost error, we were blowing away the \n when reporting
  2467. confvalue items in the controller. So asking for multiple config
  2468. values at once couldn't work.
  2469. - When listing circuits that are pending on an opening OR connection,
  2470. if we're an OR we were listing circuits that *end* at us as
  2471. being pending on every listener, dns/cpu worker, etc. Stop that.
  2472. - Dirservers were failing to create 'running-routers' or 'directory'
  2473. strings if we had more than some threshold of routers. Fix them so
  2474. they can handle any number of routers.
  2475. - Fix a superficial "Duplicate mark for close" bug.
  2476. - Stop checking for clock skew for OR connections, even for servers.
  2477. - Fix a fencepost error that was chopping off the last letter of any
  2478. nickname that is the maximum allowed nickname length.
  2479. - Update URLs in log messages so they point to the new website.
  2480. - Fix a potential problem in mangling server private keys while
  2481. writing to disk (not triggered yet, as far as we know).
  2482. - Include the licenses for other free software we include in Tor,
  2483. now that we're shipping binary distributions more regularly.
  2484. Changes in version 0.0.9.1 - 2004-12-15
  2485. o Bugfixes on 0.0.9:
  2486. - Make hibernation actually work.
  2487. - Make HashedControlPassword config option work.
  2488. - When we're reporting event circuit status to a controller,
  2489. don't use the stream status code.
  2490. Changes in version 0.0.9 - 2004-12-12
  2491. o Cleanups:
  2492. - Clean up manpage and torrc.sample file.
  2493. - Clean up severities and text of log warnings.
  2494. o Mistakes:
  2495. - Make servers trigger an assert when they enter hibernation.
  2496. Changes in version 0.0.9rc7 - 2004-12-08
  2497. o Bugfixes on 0.0.9rc:
  2498. - Fix a stack-trashing crash when an exit node begins hibernating.
  2499. - Avoid looking at unallocated memory while considering which
  2500. ports we need to build circuits to cover.
  2501. - Stop a sigpipe: when an 'end' cell races with eof from the app,
  2502. we shouldn't hold-open-until-flush if the eof arrived first.
  2503. - Fix a bug with init_cookie_authentication() in the controller.
  2504. - When recommending new-format log lines, if the upper bound is
  2505. LOG_ERR, leave it implicit.
  2506. o Bugfixes on 0.0.8.1:
  2507. - Fix a whole slew of memory leaks.
  2508. - Fix isspace() and friends so they still make Solaris happy
  2509. but also so they don't trigger asserts on win32.
  2510. - Fix parse_iso_time on platforms without strptime (eg win32).
  2511. - win32: tolerate extra "readable" events better.
  2512. - win32: when being multithreaded, leave parent fdarray open.
  2513. - Make unit tests work on win32.
  2514. Changes in version 0.0.9rc6 - 2004-12-06
  2515. o Bugfixes on 0.0.9pre:
  2516. - Clean up some more integer underflow opportunities (not exploitable
  2517. we think).
  2518. - While hibernating, hup should not regrow our listeners.
  2519. - Send an end to the streams we close when we hibernate, rather
  2520. than just chopping them off.
  2521. - React to eof immediately on non-open edge connections.
  2522. o Bugfixes on 0.0.8.1:
  2523. - Calculate timeout for waiting for a connected cell from the time
  2524. we sent the begin cell, not from the time the stream started. If
  2525. it took a long time to establish the circuit, we would time out
  2526. right after sending the begin cell.
  2527. - Fix router_compare_addr_to_addr_policy: it was not treating a port
  2528. of * as always matching, so we were picking reject *:* nodes as
  2529. exit nodes too. Oops.
  2530. o Features:
  2531. - New circuit building strategy: keep a list of ports that we've
  2532. used in the past 6 hours, and always try to have 2 circuits open
  2533. or on the way that will handle each such port. Seed us with port
  2534. 80 so web users won't complain that Tor is "slow to start up".
  2535. - Make kill -USR1 dump more useful stats about circuits.
  2536. - When warning about retrying or giving up, print the address, so
  2537. the user knows which one it's talking about.
  2538. - If you haven't used a clean circuit in an hour, throw it away,
  2539. just to be on the safe side. (This means after 6 hours a totally
  2540. unused Tor client will have no circuits open.)
  2541. Changes in version 0.0.9rc5 - 2004-12-01
  2542. o Bugfixes on 0.0.8.1:
  2543. - Disallow NDEBUG. We don't ever want anybody to turn off debug.
  2544. - Let resolve conns retry/expire also, rather than sticking around
  2545. forever.
  2546. - If we are using select, make sure we stay within FD_SETSIZE.
  2547. o Bugfixes on 0.0.9pre:
  2548. - Fix integer underflow in tor_vsnprintf() that may be exploitable,
  2549. but doesn't seem to be currently; thanks to Ilja van Sprundel for
  2550. finding it.
  2551. - If anybody set DirFetchPostPeriod, give them StatusFetchPeriod
  2552. instead. Impose minima and maxima for all *Period options; impose
  2553. even tighter maxima for fetching if we are a caching dirserver.
  2554. Clip rather than rejecting.
  2555. - Fetch cached running-routers from servers that serve it (that is,
  2556. authdirservers and servers running 0.0.9rc5-cvs or later.)
  2557. o Features:
  2558. - Accept *:706 (silc) in default exit policy.
  2559. - Implement new versioning format for post 0.1.
  2560. - Support "foo.nickname.exit" addresses, to let Alice request the
  2561. address "foo" as viewed by exit node "nickname". Based on a patch
  2562. by Geoff Goodell.
  2563. - Make tor --version --version dump the cvs Id of every file.
  2564. Changes in version 0.0.9rc4 - 2004-11-28
  2565. o Bugfixes on 0.0.8.1:
  2566. - Make windows sockets actually non-blocking (oops), and handle
  2567. win32 socket errors better.
  2568. o Bugfixes on 0.0.9rc1:
  2569. - Actually catch the -USR2 signal.
  2570. Changes in version 0.0.9rc3 - 2004-11-25
  2571. o Bugfixes on 0.0.8.1:
  2572. - Flush the log file descriptor after we print "Tor opening log file",
  2573. so we don't see those messages days later.
  2574. o Bugfixes on 0.0.9rc1:
  2575. - Make tor-resolve work again.
  2576. - Avoid infinite loop in tor-resolve if tor hangs up on it.
  2577. - Fix an assert trigger for clients/servers handling resolves.
  2578. Changes in version 0.0.9rc2 - 2004-11-24
  2579. o Bugfixes on 0.0.9rc1:
  2580. - I broke socks5 support while fixing the eof bug.
  2581. - Allow unitless bandwidths and intervals; they default to bytes
  2582. and seconds.
  2583. - New servers don't start out hibernating; they are active until
  2584. they run out of bytes, so they have a better estimate of how
  2585. long it takes, and so their operators can know they're working.
  2586. Changes in version 0.0.9rc1 - 2004-11-23
  2587. o Bugfixes on 0.0.8.1:
  2588. - Finally fix a bug that's been plaguing us for a year:
  2589. With high load, circuit package window was reaching 0. Whenever
  2590. we got a circuit-level sendme, we were reading a lot on each
  2591. socket, but only writing out a bit. So we would eventually reach
  2592. eof. This would be noticed and acted on even when there were still
  2593. bytes sitting in the inbuf.
  2594. - When poll() is interrupted, we shouldn't believe the revents values.
  2595. o Bugfixes on 0.0.9pre6:
  2596. - Fix hibernate bug that caused pre6 to be broken.
  2597. - Don't keep rephist info for routers that haven't had activity for
  2598. 24 hours. (This matters now that clients have keys, since we track
  2599. them too.)
  2600. - Never call close_temp_logs while validating log options.
  2601. - Fix backslash-escaping on tor.sh.in and torctl.in.
  2602. o Features:
  2603. - Implement weekly/monthly/daily accounting: now you specify your
  2604. hibernation properties by
  2605. AccountingMax N bytes|KB|MB|GB|TB
  2606. AccountingStart day|week|month [day] HH:MM
  2607. Defaults to "month 1 0:00".
  2608. - Let bandwidth and interval config options be specified as 5 bytes,
  2609. kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
  2610. - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
  2611. get back to normal.)
  2612. - If your requested entry or exit node has advertised bandwidth 0,
  2613. pick it anyway.
  2614. - Be more greedy about filling up relay cells -- we try reading again
  2615. once we've processed the stuff we read, in case enough has arrived
  2616. to fill the last cell completely.
  2617. - Apply NT service patch from Osamu Fujino. Still needs more work.
  2618. Changes in version 0.0.9pre6 - 2004-11-15
  2619. o Bugfixes on 0.0.8.1:
  2620. - Fix assert failure on malformed socks4a requests.
  2621. - Use identity comparison, not nickname comparison, to choose which
  2622. half of circuit-ID-space each side gets to use. This is needed
  2623. because sometimes we think of a router as a nickname, and sometimes
  2624. as a hex ID, and we can't predict what the other side will do.
  2625. - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
  2626. write() call will fail and we handle it there.
  2627. - Add a FAST_SMARTLIST define to optionally inline smartlist_get
  2628. and smartlist_len, which are two major profiling offenders.
  2629. o Bugfixes on 0.0.9pre5:
  2630. - Fix a bug in read_all that was corrupting config files on windows.
  2631. - When we're raising the max number of open file descriptors to
  2632. 'unlimited', don't log that we just raised it to '-1'.
  2633. - Include event code with events, as required by control-spec.txt.
  2634. - Don't give a fingerprint when clients do --list-fingerprint:
  2635. it's misleading, because it will never be the same again.
  2636. - Stop using strlcpy in tor_strndup, since it was slowing us
  2637. down a lot.
  2638. - Remove warn on startup about missing cached-directory file.
  2639. - Make kill -USR1 work again.
  2640. - Hibernate if we start tor during the "wait for wakeup-time" phase
  2641. of an accounting interval. Log our hibernation plans better.
  2642. - Authoritative dirservers now also cache their directory, so they
  2643. have it on start-up.
  2644. o Features:
  2645. - Fetch running-routers; cache running-routers; compress
  2646. running-routers; serve compressed running-routers.z
  2647. - Add NSI installer script contributed by J Doe.
  2648. - Commit VC6 and VC7 workspace/project files.
  2649. - Commit a tor.spec for making RPM files, with help from jbash.
  2650. - Add contrib/torctl.in contributed by Glenn Fink.
  2651. - Implement the control-spec's SAVECONF command, to write your
  2652. configuration to torrc.
  2653. - Get cookie authentication for the controller closer to working.
  2654. - Include control-spec.txt in the tarball.
  2655. - When set_conf changes our server descriptor, upload a new copy.
  2656. But don't upload it too often if there are frequent changes.
  2657. - Document authentication config in man page, and document signals
  2658. we catch.
  2659. - Clean up confusing parts of man page and torrc.sample.
  2660. - Make expand_filename handle ~ and ~username.
  2661. - Use autoconf to enable largefile support where necessary. Use
  2662. ftello where available, since ftell can fail at 2GB.
  2663. - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
  2664. log more informatively.
  2665. - Give a slightly more useful output for "tor -h".
  2666. - Refuse application socks connections to port 0.
  2667. - Check clock skew for verified servers, but allow unverified
  2668. servers and clients to have any clock skew.
  2669. - Break DirFetchPostPeriod into:
  2670. - DirFetchPeriod for fetching full directory,
  2671. - StatusFetchPeriod for fetching running-routers,
  2672. - DirPostPeriod for posting server descriptor,
  2673. - RendPostPeriod for posting hidden service descriptors.
  2674. - Make sure the hidden service descriptors are at a random offset
  2675. from each other, to hinder linkability.
  2676. Changes in version 0.0.9pre5 - 2004-11-09
  2677. o Bugfixes on 0.0.9pre4:
  2678. - Fix a seg fault in unit tests (doesn't affect main program).
  2679. - Fix an assert bug where a hidden service provider would fail if
  2680. the first hop of his rendezvous circuit was down.
  2681. - Hidden service operators now correctly handle version 1 style
  2682. INTRODUCE1 cells (nobody generates them still, so not a critical
  2683. bug).
  2684. - If do_hup fails, actually notice.
  2685. - Handle more errnos from accept() without closing the listener.
  2686. Some OpenBSD machines were closing their listeners because
  2687. they ran out of file descriptors.
  2688. - Send resolve cells to exit routers that are running a new
  2689. enough version of the resolve code to work right.
  2690. - Better handling of winsock includes on non-MSV win32 compilers.
  2691. - Some people had wrapped their tor client/server in a script
  2692. that would restart it whenever it died. This did not play well
  2693. with our "shut down if your version is obsolete" code. Now people
  2694. don't fetch a new directory if their local cached version is
  2695. recent enough.
  2696. - Make our autogen.sh work on ksh as well as bash.
  2697. o Major Features:
  2698. - Hibernation: New config option "AccountingMaxKB" lets you
  2699. set how many KBytes per month you want to allow your server to
  2700. consume. Rather than spreading those bytes out evenly over the
  2701. month, we instead hibernate for some of the month and pop up
  2702. at a deterministic time, work until the bytes are consumed, then
  2703. hibernate again. Config option "MonthlyAccountingStart" lets you
  2704. specify which day of the month your billing cycle starts on.
  2705. - Control interface: a separate program can now talk to your
  2706. client/server over a socket, and get/set config options, receive
  2707. notifications of circuits and streams starting/finishing/dying,
  2708. bandwidth used, etc. The next step is to get some GUIs working.
  2709. Let us know if you want to help out. See doc/control-spec.txt .
  2710. - Ship a contrib/tor-control.py as an example script to interact
  2711. with the control port.
  2712. - "tor --hash-password zzyxz" will output a salted password for
  2713. use in authenticating to the control interface.
  2714. - New log format in config:
  2715. "Log minsev[-maxsev] stdout|stderr|syslog" or
  2716. "Log minsev[-maxsev] file /var/foo"
  2717. o Minor Features:
  2718. - DirPolicy config option, to let people reject incoming addresses
  2719. from their dirserver.
  2720. - "tor --list-fingerprint" will list your identity key fingerprint
  2721. and then exit.
  2722. - Add "pass" target for RedirectExit, to make it easier to break
  2723. out of a sequence of RedirectExit rules.
  2724. - Clients now generate a TLS cert too, in preparation for having
  2725. them act more like real nodes.
  2726. - Ship src/win32/ in the tarball, so people can use it to build.
  2727. - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
  2728. is broken.
  2729. - New "router-status" line in directory, to better bind each verified
  2730. nickname to its identity key.
  2731. - Deprecate unofficial config option abbreviations, and abbreviations
  2732. not on the command line.
  2733. - Add a pure-C tor-resolve implementation.
  2734. - Use getrlimit and friends to ensure we can reach MaxConn (currently
  2735. 1024) file descriptors.
  2736. o Code security improvements, inspired by Ilja:
  2737. - Replace sprintf with snprintf. (I think they were all safe, but
  2738. hey.)
  2739. - Replace strcpy/strncpy with strlcpy in more places.
  2740. - Avoid strcat; use snprintf or strlcat instead.
  2741. - snprintf wrapper with consistent (though not C99) overflow behavior.
  2742. Changes in version 0.0.9pre4 - 2004-10-17
  2743. o Bugfixes on 0.0.9pre3:
  2744. - If the server doesn't specify an exit policy, use the real default
  2745. exit policy, not reject *:*.
  2746. - Ignore fascistfirewall when uploading/downloading hidden service
  2747. descriptors, since we go through Tor for those; and when using
  2748. an HttpProxy, since we assume it can reach them all.
  2749. - When looking for an authoritative dirserver, use only the ones
  2750. configured at boot. Don't bother looking in the directory.
  2751. - The rest of the fix for get_default_conf_file() on older win32.
  2752. - Make 'Routerfile' config option obsolete.
  2753. o Features:
  2754. - New 'MyFamily nick1,...' config option for a server to
  2755. specify other servers that shouldn't be used in the same circuit
  2756. with it. Only believed if nick1 also specifies us.
  2757. - New 'NodeFamily nick1,nick2,...' config option for a client to
  2758. specify nodes that it doesn't want to use in the same circuit.
  2759. - New 'Redirectexit pattern address:port' config option for a
  2760. server to redirect exit connections, e.g. to a local squid.
  2761. Changes in version 0.0.9pre3 - 2004-10-13
  2762. o Bugfixes on 0.0.8.1:
  2763. - Better torrc example lines for dirbindaddress and orbindaddress.
  2764. - Improved bounds checking on parsed ints (e.g. config options and
  2765. the ones we find in directories.)
  2766. - Better handling of size_t vs int, so we're more robust on 64
  2767. bit platforms.
  2768. - Fix the rest of the bug where a newly started OR would appear
  2769. as unverified even after we've added his fingerprint and hupped
  2770. the dirserver.
  2771. - Fix a bug from 0.0.7: when read() failed on a stream, we would
  2772. close it without sending back an end. So 'connection refused'
  2773. would simply be ignored and the user would get no response.
  2774. o Bugfixes on 0.0.9pre2:
  2775. - Serving the cached-on-disk directory to people is bad. We now
  2776. provide no directory until we've fetched a fresh one.
  2777. - Workaround for bug on windows where cached-directories get crlf
  2778. corruption.
  2779. - Make get_default_conf_file() work on older windows too.
  2780. - If we write a *:* exit policy line in the descriptor, don't write
  2781. any more exit policy lines.
  2782. o Features:
  2783. - Use only 0.0.9pre1 and later servers for resolve cells.
  2784. - Make the dirservers file obsolete.
  2785. - Include a dir-signing-key token in directories to tell the
  2786. parsing entity which key is being used to sign.
  2787. - Remove the built-in bulky default dirservers string.
  2788. - New config option "Dirserver %s:%d [fingerprint]", which can be
  2789. repeated as many times as needed. If no dirservers specified,
  2790. default to moria1,moria2,tor26.
  2791. - Make moria2 advertise a dirport of 80, so people behind firewalls
  2792. will be able to get a directory.
  2793. - Http proxy support
  2794. - Dirservers translate requests for http://%s:%d/x to /x
  2795. - You can specify "HttpProxy %s[:%d]" and all dir fetches will
  2796. be routed through this host.
  2797. - Clients ask for /tor/x rather than /x for new enough dirservers.
  2798. This way we can one day coexist peacefully with apache.
  2799. - Clients specify a "Host: %s%d" http header, to be compatible
  2800. with more proxies, and so running squid on an exit node can work.
  2801. Changes in version 0.0.8.1 - 2004-10-13
  2802. o Bugfixes:
  2803. - Fix a seg fault that can be triggered remotely for Tor
  2804. clients/servers with an open dirport.
  2805. - Fix a rare assert trigger, where routerinfos for entries in
  2806. our cpath would expire while we're building the path.
  2807. - Fix a bug in OutboundBindAddress so it (hopefully) works.
  2808. - Fix a rare seg fault for people running hidden services on
  2809. intermittent connections.
  2810. - Fix a bug in parsing opt keywords with objects.
  2811. - Fix a stale pointer assert bug when a stream detaches and
  2812. reattaches.
  2813. - Fix a string format vulnerability (probably not exploitable)
  2814. in reporting stats locally.
  2815. - Fix an assert trigger: sometimes launching circuits can fail
  2816. immediately, e.g. because too many circuits have failed recently.
  2817. - Fix a compile warning on 64 bit platforms.
  2818. Changes in version 0.0.9pre2 - 2004-10-03
  2819. o Bugfixes:
  2820. - Make fetching a cached directory work for 64-bit platforms too.
  2821. - Make zlib.h a required header, not an optional header.
  2822. Changes in version 0.0.9pre1 - 2004-10-01
  2823. o Bugfixes:
  2824. - Stop using separate defaults for no-config-file and
  2825. empty-config-file. Now you have to explicitly turn off SocksPort,
  2826. if you don't want it open.
  2827. - Fix a bug in OutboundBindAddress so it (hopefully) works.
  2828. - Improve man page to mention more of the 0.0.8 features.
  2829. - Fix a rare seg fault for people running hidden services on
  2830. intermittent connections.
  2831. - Change our file IO stuff (especially wrt OpenSSL) so win32 is
  2832. happier.
  2833. - Fix more dns related bugs: send back resolve_failed and end cells
  2834. more reliably when the resolve fails, rather than closing the
  2835. circuit and then trying to send the cell. Also attach dummy resolve
  2836. connections to a circuit *before* calling dns_resolve(), to fix
  2837. a bug where cached answers would never be sent in RESOLVED cells.
  2838. - When we run out of disk space, or other log writing error, don't
  2839. crash. Just stop logging to that log and continue.
  2840. - We were starting to daemonize before we opened our logs, so if
  2841. there were any problems opening logs, we would complain to stderr,
  2842. which wouldn't work, and then mysteriously exit.
  2843. - Fix a rare bug where sometimes a verified OR would connect to us
  2844. before he'd uploaded his descriptor, which would cause us to
  2845. assign conn->nickname as though he's unverified. Now we look through
  2846. the fingerprint list to see if he's there.
  2847. - Fix a rare assert trigger, where routerinfos for entries in
  2848. our cpath would expire while we're building the path.
  2849. o Features:
  2850. - Clients can ask dirservers for /dir.z to get a compressed version
  2851. of the directory. Only works for servers running 0.0.9, of course.
  2852. - Make clients cache directories and use them to seed their router
  2853. lists at startup. This means clients have a datadir again.
  2854. - Configuration infrastructure support for warning on obsolete
  2855. options.
  2856. - Respond to content-encoding headers by trying to uncompress as
  2857. appropriate.
  2858. - Reply with a deflated directory when a client asks for "dir.z".
  2859. We could use allow-encodings instead, but allow-encodings isn't
  2860. specified in HTTP 1.0.
  2861. - Raise the max dns workers from 50 to 100.
  2862. - Discourage people from setting their dirfetchpostperiod more often
  2863. than once per minute.
  2864. - Protect dirservers from overzealous descriptor uploading -- wait
  2865. 10 seconds after directory gets dirty, before regenerating.
  2866. Changes in version 0.0.8 - 2004-08-25
  2867. o Port it to SunOS 5.9 / Athena
  2868. Changes in version 0.0.8rc2 - 2004-08-20
  2869. o Make it compile on cygwin again.
  2870. o When picking unverified routers, skip those with low uptime and/or
  2871. low bandwidth, depending on what properties you care about.
  2872. Changes in version 0.0.8rc1 - 2004-08-18
  2873. o Changes from 0.0.7.3:
  2874. - Bugfixes:
  2875. - Fix assert triggers: if the other side returns an address 0.0.0.0,
  2876. don't put it into the client dns cache.
  2877. - If a begin failed due to exit policy, but we believe the IP address
  2878. should have been allowed, switch that router to exitpolicy reject *:*
  2879. until we get our next directory.
  2880. - Features:
  2881. - Clients choose nodes proportional to advertised bandwidth.
  2882. - Avoid using nodes with low uptime as introduction points.
  2883. - Handle servers with dynamic IP addresses: don't replace
  2884. options->Address with the resolved one at startup, and
  2885. detect our address right before we make a routerinfo each time.
  2886. - 'FascistFirewall' option to pick dirservers and ORs on specific
  2887. ports; plus 'FirewallPorts' config option to tell FascistFirewall
  2888. which ports are open. (Defaults to 80,443)
  2889. - Be more aggressive about trying to make circuits when the network
  2890. has changed (e.g. when you unsuspend your laptop).
  2891. - Check for time skew on http headers; report date in response to
  2892. "GET /".
  2893. - If the entrynode config line has only one node, don't pick it as
  2894. an exitnode.
  2895. - Add strict{entry|exit}nodes config options. If set to 1, then
  2896. we refuse to build circuits that don't include the specified entry
  2897. or exit nodes.
  2898. - OutboundBindAddress config option, to bind to a specific
  2899. IP address for outgoing connect()s.
  2900. - End truncated log entries (e.g. directories) with "[truncated]".
  2901. o Patches to 0.0.8preX:
  2902. - Bugfixes:
  2903. - Patches to compile and run on win32 again (maybe)?
  2904. - Fix crash when looking for ~/.torrc with no $HOME set.
  2905. - Fix a race bug in the unit tests.
  2906. - Handle verified/unverified name collisions better when new
  2907. routerinfo's arrive in a directory.
  2908. - Sometimes routers were getting entered into the stats before
  2909. we'd assigned their identity_digest. Oops.
  2910. - Only pick and establish intro points after we've gotten a
  2911. directory.
  2912. - Features:
  2913. - AllowUnverifiedNodes config option to let circuits choose no-name
  2914. routers in entry,middle,exit,introduction,rendezvous positions.
  2915. Allow middle and rendezvous positions by default.
  2916. - Add a man page for tor-resolve.
  2917. Changes in version 0.0.7.3 - 2004-08-12
  2918. o Stop dnsworkers from triggering an assert failure when you
  2919. ask them to resolve the host "".
  2920. Changes in version 0.0.8pre3 - 2004-08-09
  2921. o Changes from 0.0.7.2:
  2922. - Allow multiple ORs with same nickname in routerlist -- now when
  2923. people give us one identity key for a nickname, then later
  2924. another, we don't constantly complain until the first expires.
  2925. - Remember used bandwidth (both in and out), and publish 15-minute
  2926. snapshots for the past day into our descriptor.
  2927. - You can now fetch $DIRURL/running-routers to get just the
  2928. running-routers line, not the whole descriptor list. (But
  2929. clients don't use this yet.)
  2930. - When people mistakenly use Tor as an http proxy, point them
  2931. at the tor-doc.html rather than the INSTALL.
  2932. - Remove our mostly unused -- and broken -- hex_encode()
  2933. function. Use base16_encode() instead. (Thanks to Timo Lindfors
  2934. for pointing out this bug.)
  2935. - Rotate onion keys every 12 hours, not every 2 hours, so we have
  2936. fewer problems with people using the wrong key.
  2937. - Change the default exit policy to reject the default edonkey,
  2938. kazaa, gnutella ports.
  2939. - Add replace_file() to util.[ch] to handle win32's rename().
  2940. o Changes from 0.0.8preX:
  2941. - Fix two bugs in saving onion keys to disk when rotating, so
  2942. hopefully we'll get fewer people using old onion keys.
  2943. - Fix an assert error that was making SocksPolicy not work.
  2944. - Be willing to expire routers that have an open dirport -- it's
  2945. just the authoritative dirservers we want to not forget.
  2946. - Reject tor-resolve requests for .onion addresses early, so we
  2947. don't build a whole rendezvous circuit and then fail.
  2948. - When you're warning a server that he's unverified, don't cry
  2949. wolf unpredictably.
  2950. - Fix a race condition: don't try to extend onto a connection
  2951. that's still handshaking.
  2952. - For servers in clique mode, require the conn to be open before
  2953. you'll choose it for your path.
  2954. - Fix some cosmetic bugs about duplicate mark-for-close, lack of
  2955. end relay cell, etc.
  2956. - Measure bandwidth capacity over the last 24 hours, not just 12
  2957. - Bugfix: authoritative dirservers were making and signing a new
  2958. directory for each client, rather than reusing the cached one.
  2959. Changes in version 0.0.8pre2 - 2004-08-04
  2960. o Changes from 0.0.7.2:
  2961. - Security fixes:
  2962. - Check directory signature _before_ you decide whether you're
  2963. you're running an obsolete version and should exit.
  2964. - Check directory signature _before_ you parse the running-routers
  2965. list to decide who's running or verified.
  2966. - Bugfixes and features:
  2967. - Check return value of fclose while writing to disk, so we don't
  2968. end up with broken files when servers run out of disk space.
  2969. - Log a warning if the user uses an unsafe socks variant, so people
  2970. are more likely to learn about privoxy or socat.
  2971. - Dirservers now include RFC1123-style dates in the HTTP headers,
  2972. which one day we will use to better detect clock skew.
  2973. o Changes from 0.0.8pre1:
  2974. - Make it compile without warnings again on win32.
  2975. - Log a warning if you're running an unverified server, to let you
  2976. know you might want to get it verified.
  2977. - Only pick a default nickname if you plan to be a server.
  2978. Changes in version 0.0.8pre1 - 2004-07-23
  2979. o Bugfixes:
  2980. - Made our unit tests compile again on OpenBSD 3.5, and tor
  2981. itself compile again on OpenBSD on a sparc64.
  2982. - We were neglecting milliseconds when logging on win32, so
  2983. everything appeared to happen at the beginning of each second.
  2984. o Protocol changes:
  2985. - 'Extend' relay cell payloads now include the digest of the
  2986. intended next hop's identity key. Now we can verify that we're
  2987. extending to the right router, and also extend to routers we
  2988. hadn't heard of before.
  2989. o Features:
  2990. - Tor nodes can now act as relays (with an advertised ORPort)
  2991. without being manually verified by the dirserver operators.
  2992. - Uploaded descriptors of unverified routers are now accepted
  2993. by the dirservers, and included in the directory.
  2994. - Verified routers are listed by nickname in the running-routers
  2995. list; unverified routers are listed as "$<fingerprint>".
  2996. - We now use hash-of-identity-key in most places rather than
  2997. nickname or addr:port, for improved security/flexibility.
  2998. - To avoid Sybil attacks, paths still use only verified servers.
  2999. But now we have a chance to play around with hybrid approaches.
  3000. - Nodes track bandwidth usage to estimate capacity (not used yet).
  3001. - ClientOnly option for nodes that never want to become servers.
  3002. - Directory caching.
  3003. - "AuthoritativeDir 1" option for the official dirservers.
  3004. - Now other nodes (clients and servers) will cache the latest
  3005. directory they've pulled down.
  3006. - They can enable their DirPort to serve it to others.
  3007. - Clients will pull down a directory from any node with an open
  3008. DirPort, and check the signature/timestamp correctly.
  3009. - Authoritative dirservers now fetch directories from other
  3010. authdirservers, to stay better synced.
  3011. - Running-routers list tells who's down also, along with noting
  3012. if they're verified (listed by nickname) or unverified (listed
  3013. by hash-of-key).
  3014. - Allow dirservers to serve running-router list separately.
  3015. This isn't used yet.
  3016. - ORs connect-on-demand to other ORs
  3017. - If you get an extend cell to an OR you're not connected to,
  3018. connect, handshake, and forward the create cell.
  3019. - The authoritative dirservers stay connected to everybody,
  3020. and everybody stays connected to 0.0.7 servers, but otherwise
  3021. clients/servers expire unused connections after 5 minutes.
  3022. - When servers get a sigint, they delay 30 seconds (refusing new
  3023. connections) then exit. A second sigint causes immediate exit.
  3024. - File and name management:
  3025. - Look for .torrc if no CONFDIR "torrc" is found.
  3026. - If no datadir is defined, then choose, make, and secure ~/.tor
  3027. as datadir.
  3028. - If torrc not found, exitpolicy reject *:*.
  3029. - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
  3030. - If no nickname is defined, derive default from hostname.
  3031. - Rename secret key files, e.g. identity.key -> secret_id_key,
  3032. to discourage people from mailing their identity key to tor-ops.
  3033. - Refuse to build a circuit before the directory has arrived --
  3034. it won't work anyway, since you won't know the right onion keys
  3035. to use.
  3036. - Try other dirservers immediately if the one you try is down. This
  3037. should tolerate down dirservers better now.
  3038. - Parse tor version numbers so we can do an is-newer-than check
  3039. rather than an is-in-the-list check.
  3040. - New socks command 'resolve', to let us shim gethostbyname()
  3041. locally.
  3042. - A 'tor_resolve' script to access the socks resolve functionality.
  3043. - A new socks-extensions.txt doc file to describe our
  3044. interpretation and extensions to the socks protocols.
  3045. - Add a ContactInfo option, which gets published in descriptor.
  3046. - Publish OR uptime in descriptor (and thus in directory) too.
  3047. - Write tor version at the top of each log file
  3048. - New docs in the tarball:
  3049. - tor-doc.html.
  3050. - Document that you should proxy your SSL traffic too.
  3051. Changes in version 0.0.7.2 - 2004-07-07
  3052. o A better fix for the 0.0.0.0 problem, that will hopefully
  3053. eliminate the remaining related assertion failures.
  3054. Changes in version 0.0.7.1 - 2004-07-04
  3055. o When an address resolves to 0.0.0.0, treat it as a failed resolve,
  3056. since internally we use 0.0.0.0 to signify "not yet resolved".
  3057. Changes in version 0.0.7 - 2004-06-07
  3058. o Updated the man page to reflect the new features.
  3059. Changes in version 0.0.7rc2 - 2004-06-06
  3060. o Changes from 0.0.7rc1:
  3061. - Make it build on Win32 again.
  3062. o Changes from 0.0.6.2:
  3063. - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
  3064. settings too.
  3065. Changes in version 0.0.7rc1 - 2004-06-02
  3066. o Bugfixes:
  3067. - On sighup, we were adding another log without removing the first
  3068. one. So log messages would get duplicated n times for n sighups.
  3069. - Several cases of using a connection after we'd freed it. The
  3070. problem was that connections that are pending resolve are in both
  3071. the pending_resolve tree, and also the circuit's resolving_streams
  3072. list. When you want to remove one, you must remove it from both.
  3073. - Fix a double-mark-for-close where an end cell arrived for a
  3074. resolving stream, and then the resolve failed.
  3075. - Check directory signatures based on name of signer, not on whom
  3076. we got the directory from. This will let us cache directories more
  3077. easily.
  3078. o Features:
  3079. - Crank up some of our constants to handle more users.
  3080. Changes in version 0.0.7pre1 - 2004-06-02
  3081. o Fixes for crashes and other obnoxious bugs:
  3082. - Fix an epipe bug: sometimes when directory connections failed
  3083. to connect, we would give them a chance to flush before closing
  3084. them.
  3085. - When we detached from a circuit because of resolvefailed, we
  3086. would immediately try the same circuit twice more, and then
  3087. give up on the resolve thinking we'd tried three different
  3088. exit nodes.
  3089. - Limit the number of intro circuits we'll attempt to build for a
  3090. hidden service per 15-minute period.
  3091. - Check recommended-software string *early*, before actually parsing
  3092. the directory. Thus we can detect an obsolete version and exit,
  3093. even if the new directory format doesn't parse.
  3094. o Fixes for security bugs:
  3095. - Remember which nodes are dirservers when you startup, and if a
  3096. random OR enables his dirport, don't automatically assume he's
  3097. a trusted dirserver.
  3098. o Other bugfixes:
  3099. - Directory connections were asking the wrong poll socket to
  3100. start writing, and not asking themselves to start writing.
  3101. - When we detached from a circuit because we sent a begin but
  3102. didn't get a connected, we would use it again the first time;
  3103. but after that we would correctly switch to a different one.
  3104. - Stop warning when the first onion decrypt attempt fails; they
  3105. will sometimes legitimately fail now that we rotate keys.
  3106. - Override unaligned-access-ok check when $host_cpu is ia64 or
  3107. arm. Apparently they allow it but the kernel whines.
  3108. - Dirservers try to reconnect periodically too, in case connections
  3109. have failed.
  3110. - Fix some memory leaks in directory servers.
  3111. - Allow backslash in Win32 filenames.
  3112. - Made Tor build complain-free on FreeBSD, hopefully without
  3113. breaking other BSD builds. We'll see.
  3114. o Features:
  3115. - Doxygen markup on all functions and global variables.
  3116. - Make directory functions update routerlist, not replace it. So
  3117. now directory disagreements are not so critical a problem.
  3118. - Remove the upper limit on number of descriptors in a dirserver's
  3119. directory (not that we were anywhere close).
  3120. - Allow multiple logfiles at different severity ranges.
  3121. - Allow *BindAddress to specify ":port" rather than setting *Port
  3122. separately. Allow multiple instances of each BindAddress config
  3123. option, so you can bind to multiple interfaces if you want.
  3124. - Allow multiple exit policy lines, which are processed in order.
  3125. Now we don't need that huge line with all the commas in it.
  3126. - Enable accept/reject policies on SOCKS connections, so you can bind
  3127. to 0.0.0.0 but still control who can use your OP.
  3128. Changes in version 0.0.6.2 - 2004-05-16
  3129. o Our integrity-checking digest was checking only the most recent cell,
  3130. not the previous cells like we'd thought.
  3131. Thanks to Stefan Mark for finding the flaw!
  3132. Changes in version 0.0.6.1 - 2004-05-06
  3133. o Fix two bugs in our AES counter-mode implementation (this affected
  3134. onion-level stream encryption, but not TLS-level). It turns
  3135. out we were doing something much more akin to a 16-character
  3136. polyalphabetic cipher. Oops.
  3137. Thanks to Stefan Mark for finding the flaw!
  3138. o Retire moria3 as a directory server, and add tor26 as a directory
  3139. server.
  3140. Changes in version 0.0.6 - 2004-05-02
  3141. [version bump only]
  3142. Changes in version 0.0.6rc4 - 2004-05-01
  3143. o Update the built-in dirservers list to use the new directory format
  3144. o Fix a rare seg fault: if a node offering a hidden service attempts
  3145. to build a circuit to Alice's rendezvous point and fails before it
  3146. reaches the last hop, it retries with a different circuit, but
  3147. then dies.
  3148. o Handle windows socket errors correctly.
  3149. Changes in version 0.0.6rc3 - 2004-04-28
  3150. o Don't expire non-general excess circuits (if we had enough
  3151. circuits open, we were expiring rendezvous circuits -- even
  3152. when they had a stream attached. oops.)
  3153. o Fetch randomness from /dev/urandom better (not via fopen/fread)
  3154. o Better debugging for tls errors
  3155. o Some versions of openssl have an SSL_pending function that erroneously
  3156. returns bytes when there is a non-application record pending.
  3157. o Set Content-Type on the directory and hidserv descriptor.
  3158. o Remove IVs from cipher code, since AES-ctr has none.
  3159. o Win32 fixes. Tor now compiles on win32 with no warnings/errors.
  3160. o We were using an array of length zero in a few places.
  3161. o win32's gethostbyname can't resolve an IP to an IP.
  3162. o win32's close can't close a socket.
  3163. Changes in version 0.0.6rc2 - 2004-04-26
  3164. o Fix a bug where we were closing tls connections intermittently.
  3165. It turns out openssl keeps its errors around -- so if an error
  3166. happens, and you don't ask about it, and then another openssl
  3167. operation happens and succeeds, and you ask if there was an error,
  3168. it tells you about the first error. Fun fun.
  3169. o Fix a bug that's been lurking since 27 may 03 (!)
  3170. When passing back a destroy cell, we would use the wrong circ id.
  3171. 'Mostly harmless', but still worth fixing.
  3172. o Since we don't support truncateds much, don't bother sending them;
  3173. just close the circ.
  3174. o check for <machine/limits.h> so we build on NetBSD again (I hope).
  3175. o don't crash if a conn that sent a begin has suddenly lost its circuit
  3176. (this was quite rare).
  3177. Changes in version 0.0.6rc1 - 2004-04-25
  3178. o We now rotate link (tls context) keys and onion keys.
  3179. o CREATE cells now include oaep padding, so you can tell
  3180. if you decrypted them correctly.
  3181. o Add bandwidthburst to server descriptor.
  3182. o Directories now say which dirserver signed them.
  3183. o Use a tor_assert macro that logs failed assertions too.
  3184. Changes in version 0.0.6pre5 - 2004-04-18
  3185. o changes from 0.0.6pre4:
  3186. - make tor build on broken freebsd 5.2 installs
  3187. - fix a failed assert when you try an intro point, get a nack, and try
  3188. a second one and it works.
  3189. - when alice uses a port that the hidden service doesn't accept,
  3190. it now sends back an end cell (denied by exit policy). otherwise
  3191. alice would just have to wait to time out.
  3192. - fix another rare bug: when we had tried all the intro
  3193. points for a hidden service, we fetched the descriptor
  3194. again, but we left our introcirc thinking it had already
  3195. sent an intro, so it kept waiting for a response...
  3196. - bugfix: when you sleep your hidden-service laptop, as soon
  3197. as it wakes up it tries to upload a service descriptor, but
  3198. socketpair fails for some reason (localhost not up yet?).
  3199. now we simply give up on that upload, and we'll try again later.
  3200. i'd still like to find the bug though.
  3201. - if an intro circ waiting for an ack dies before getting one, then
  3202. count it as a nack
  3203. - we were reusing stale service descriptors and refetching usable
  3204. ones. oops.
  3205. Changes in version 0.0.6pre4 - 2004-04-14
  3206. o changes from 0.0.6pre3:
  3207. - when bob fails to connect to the rendezvous point, and his
  3208. circ didn't fail because of the rendezvous point itself, then
  3209. he retries a couple of times
  3210. - we expire introduction and rendezvous circs more thoroughly
  3211. (sometimes they were hanging around forever)
  3212. - we expire unattached rendezvous streams that have been around
  3213. too long (they were sticking around forever).
  3214. - fix a measly fencepost error that was crashing everybody with
  3215. a strict glibc.
  3216. Changes in version 0.0.6pre3 - 2004-04-14
  3217. o changes from 0.0.6pre2:
  3218. - make hup work again
  3219. - fix some memory leaks for dirservers
  3220. - allow more skew in rendezvous descriptor timestamps, to help
  3221. handle people like blanu who don't know what time it is
  3222. - normal circs are 3 hops, but some rend/intro circs are 4, if
  3223. the initiator doesn't get to choose the last hop
  3224. - send acks for introductions, so alice can know whether to try
  3225. again
  3226. - bob publishes intro points more correctly
  3227. o changes from 0.0.5:
  3228. - fix an assert trigger that's been plaguing us since the days
  3229. of 0.0.2prexx (thanks weasel!)
  3230. - retry stream correctly when we fail to connect because of
  3231. exit-policy-reject (should try another) or can't-resolve-address
  3232. (also should try another, because dns on random internet servers
  3233. is flaky).
  3234. - when we hup a dirserver and we've *removed* a server from the
  3235. approved-routers list, now we remove that server from the
  3236. in-memory directories too
  3237. Changes in version 0.0.6pre2 - 2004-04-08
  3238. o We fixed our base32 implementation. Now it works on all architectures.
  3239. Changes in version 0.0.6pre1 - 2004-04-08
  3240. o Features:
  3241. - Hidden services and rendezvous points are implemented. Go to
  3242. http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
  3243. hidden services. (This only works via a socks4a proxy such as
  3244. Privoxy, and currently it's quite slow.)
  3245. Changes in version 0.0.5 - 2004-03-30
  3246. [version bump only]
  3247. Changes in version 0.0.5rc3 - 2004-03-29
  3248. o Install torrc as torrc.sample -- we no longer clobber your
  3249. torrc. (Woo!)
  3250. o Re-enable recommendedversion checking (we broke it in rc2, oops)
  3251. o Add in a 'notice' log level for things the operator should hear
  3252. but that aren't warnings
  3253. Changes in version 0.0.5rc2 - 2004-03-29
  3254. o Hold socks connection open until reply is flushed (if possible)
  3255. o Make exit nodes resolve IPs to IPs immediately, rather than asking
  3256. the dns farm to do it.
  3257. o Fix c99 aliasing warnings in rephist.c
  3258. o Don't include server descriptors that are older than 24 hours in the
  3259. directory.
  3260. o Give socks 'reject' replies their whole 15s to attempt to flush,
  3261. rather than seeing the 60s timeout and assuming the flush had failed.
  3262. o Clean automake droppings from the cvs repository
  3263. Changes in version 0.0.5rc1 - 2004-03-28
  3264. o Fix mangled-state bug in directory fetching (was causing sigpipes).
  3265. o Only build circuits after we've fetched the directory: clients were
  3266. using only the directory servers before they'd fetched a directory.
  3267. This also means longer startup time; so it goes.
  3268. o Fix an assert trigger where an OP would fail to handshake, and we'd
  3269. expect it to have a nickname.
  3270. o Work around a tsocks bug: do a socks reject when AP connection dies
  3271. early, else tsocks goes into an infinite loop.
  3272. Changes in version 0.0.4 - 2004-03-26
  3273. o When connecting to a dirserver or OR and the network is down,
  3274. we would crash.
  3275. Changes in version 0.0.3 - 2004-03-26
  3276. o Warn and fail if server chose a nickname with illegal characters
  3277. o Port to Solaris and Sparc:
  3278. - include missing header fcntl.h
  3279. - have autoconf find -lsocket -lnsl automatically
  3280. - deal with hardware word alignment
  3281. - make uname() work (solaris has a different return convention)
  3282. - switch from using signal() to sigaction()
  3283. o Preliminary work on reputation system:
  3284. - Keep statistics on success/fail of connect attempts; they're published
  3285. by kill -USR1 currently.
  3286. - Add a RunTesting option to try to learn link state by creating test
  3287. circuits, even when SocksPort is off.
  3288. - Remove unused open circuits when there are too many.
  3289. Changes in version 0.0.2 - 2004-03-19
  3290. - Include strlcpy and strlcat for safer string ops
  3291. - define INADDR_NONE so we compile (but still not run) on solaris
  3292. Changes in version 0.0.2pre27 - 2004-03-14
  3293. o Bugfixes:
  3294. - Allow internal tor networks (we were rejecting internal IPs,
  3295. now we allow them if they're set explicitly).
  3296. - And fix a few endian issues.
  3297. Changes in version 0.0.2pre26 - 2004-03-14
  3298. o New features:
  3299. - If a stream times out after 15s without a connected cell, don't
  3300. try that circuit again: try a new one.
  3301. - Retry streams at most 4 times. Then give up.
  3302. - When a dirserver gets a descriptor from an unknown router, it
  3303. logs its fingerprint (so the dirserver operator can choose to
  3304. accept it even without mail from the server operator).
  3305. - Inform unapproved servers when we reject their descriptors.
  3306. - Make tor build on Windows again. It works as a client, who knows
  3307. about as a server.
  3308. - Clearer instructions in the torrc for how to set up a server.
  3309. - Be more efficient about reading fd's when our global token bucket
  3310. (used for rate limiting) becomes empty.
  3311. o Bugfixes:
  3312. - Stop asserting that computers always go forward in time. It's
  3313. simply not true.
  3314. - When we sent a cell (e.g. destroy) and then marked an OR connection
  3315. expired, we might close it before finishing a flush if the other
  3316. side isn't reading right then.
  3317. - Don't allow dirservers to start if they haven't defined
  3318. RecommendedVersions
  3319. - We were caching transient dns failures. Oops.
  3320. - Prevent servers from publishing an internal IP as their address.
  3321. - Address a strcat vulnerability in circuit.c
  3322. Changes in version 0.0.2pre25 - 2004-03-04
  3323. o New features:
  3324. - Put the OR's IP in its router descriptor, not its fqdn. That way
  3325. we'll stop being stalled by gethostbyname for nodes with flaky dns,
  3326. e.g. poblano.
  3327. o Bugfixes:
  3328. - If the user typed in an address that didn't resolve, the server
  3329. crashed.
  3330. Changes in version 0.0.2pre24 - 2004-03-03
  3331. o Bugfixes:
  3332. - Fix an assertion failure in dns.c, where we were trying to dequeue
  3333. a pending dns resolve even if it wasn't pending
  3334. - Fix a spurious socks5 warning about still trying to write after the
  3335. connection is finished.
  3336. - Hold certain marked_for_close connections open until they're finished
  3337. flushing, rather than losing bytes by closing them too early.
  3338. - Correctly report the reason for ending a stream
  3339. - Remove some duplicate calls to connection_mark_for_close
  3340. - Put switch_id and start_daemon earlier in the boot sequence, so it
  3341. will actually try to chdir() to options.DataDirectory
  3342. - Make 'make test' exit(1) if a test fails; fix some unit tests
  3343. - Make tor fail when you use a config option it doesn't know about,
  3344. rather than warn and continue.
  3345. - Make --version work
  3346. - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
  3347. Changes in version 0.0.2pre23 - 2004-02-29
  3348. o New features:
  3349. - Print a statement when the first circ is finished, so the user
  3350. knows it's working.
  3351. - If a relay cell is unrecognized at the end of the circuit,
  3352. send back a destroy. (So attacks to mutate cells are more
  3353. clearly thwarted.)
  3354. - New config option 'excludenodes' to avoid certain nodes for circuits.
  3355. - When it daemonizes, it chdir's to the DataDirectory rather than "/",
  3356. so you can collect coredumps there.
  3357. o Bugfixes:
  3358. - Fix a bug in tls flushing where sometimes data got wedged and
  3359. didn't flush until more data got sent. Hopefully this bug was
  3360. a big factor in the random delays we were seeing.
  3361. - Make 'connected' cells include the resolved IP, so the client
  3362. dns cache actually gets populated.
  3363. - Disallow changing from ORPort=0 to ORPort>0 on hup.
  3364. - When we time-out on a stream and detach from the circuit, send an
  3365. end cell down it first.
  3366. - Only warn about an unknown router (in exitnodes, entrynodes,
  3367. excludenodes) after we've fetched a directory.
  3368. Changes in version 0.0.2pre22 - 2004-02-26
  3369. o New features:
  3370. - Servers publish less revealing uname information in descriptors.
  3371. - More memory tracking and assertions, to crash more usefully when
  3372. errors happen.
  3373. - If the default torrc isn't there, just use some default defaults.
  3374. Plus provide an internal dirservers file if they don't have one.
  3375. - When the user tries to use Tor as an http proxy, give them an http
  3376. 501 failure explaining that we're a socks proxy.
  3377. - Dump a new router.desc on hup, to help confused people who change
  3378. their exit policies and then wonder why router.desc doesn't reflect
  3379. it.
  3380. - Clean up the generic tor.sh init script that we ship with.
  3381. o Bugfixes:
  3382. - If the exit stream is pending on the resolve, and a destroy arrives,
  3383. then the stream wasn't getting removed from the pending list. I
  3384. think this was the one causing recent server crashes.
  3385. - Use a more robust poll on OSX 10.3, since their poll is flaky.
  3386. - When it couldn't resolve any dirservers, it was useless from then on.
  3387. Now it reloads the RouterFile (or default dirservers) if it has no
  3388. dirservers.
  3389. - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
  3390. many users don't even *have* a /usr/local/sbin/.
  3391. Changes in version 0.0.2pre21 - 2004-02-18
  3392. o New features:
  3393. - There's a ChangeLog file that actually reflects the changelog.
  3394. - There's a 'torify' wrapper script, with an accompanying
  3395. tor-tsocks.conf, that simplifies the process of using tsocks for
  3396. tor. It even has a man page.
  3397. - The tor binary gets installed to sbin rather than bin now.
  3398. - Retry streams where the connected cell hasn't arrived in 15 seconds
  3399. - Clean up exit policy handling -- get the default out of the torrc,
  3400. so we can update it without forcing each server operator to fix
  3401. his/her torrc.
  3402. - Allow imaps and pop3s in default exit policy
  3403. o Bugfixes:
  3404. - Prevent picking middleman nodes as the last node in the circuit
  3405. Changes in version 0.0.2pre20 - 2004-01-30
  3406. o New features:
  3407. - We now have a deb package, and it's in debian unstable. Go to
  3408. it, apt-getters. :)
  3409. - I've split the TotalBandwidth option into BandwidthRate (how many
  3410. bytes per second you want to allow, long-term) and
  3411. BandwidthBurst (how many bytes you will allow at once before the cap
  3412. kicks in). This better token bucket approach lets you, say, set
  3413. BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
  3414. performance while not exceeding your monthly bandwidth quota.
  3415. - Push out a tls record's worth of data once you've got it, rather
  3416. than waiting until you've read everything waiting to be read. This
  3417. may improve performance by pipelining better. We'll see.
  3418. - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
  3419. from failed circuits (if they haven't been connected yet) and attach
  3420. to new ones.
  3421. - Expire old streams that haven't managed to connect. Some day we'll
  3422. have them reattach to new circuits instead.
  3423. o Bugfixes:
  3424. - Fix several memory leaks that were causing servers to become bloated
  3425. after a while.
  3426. - Fix a few very rare assert triggers. A few more remain.
  3427. - Setuid to User _before_ complaining about running as root.
  3428. Changes in version 0.0.2pre19 - 2004-01-07
  3429. o Bugfixes:
  3430. - Fix deadlock condition in dns farm. We were telling a child to die by
  3431. closing the parent's file descriptor to him. But newer children were
  3432. inheriting the open file descriptor from the parent, and since they
  3433. weren't closing it, the socket never closed, so the child never read
  3434. eof, so he never knew to exit. Similarly, dns workers were holding
  3435. open other sockets, leading to all sorts of chaos.
  3436. - New cleaner daemon() code for forking and backgrounding.
  3437. - If you log to a file, it now prints an entry at the top of the
  3438. logfile so you know it's working.
  3439. - The onionskin challenge length was 30 bytes longer than necessary.
  3440. - Started to patch up the spec so it's not quite so out of date.
  3441. Changes in version 0.0.2pre18 - 2004-01-02
  3442. o Bugfixes:
  3443. - Fix endian issues with the 'integrity' field in the relay header.
  3444. - Fix a potential bug where connections in state
  3445. AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
  3446. Changes in version 0.0.2pre17 - 2003-12-30
  3447. o Bugfixes:
  3448. - Made --debuglogfile (or any second log file, actually) work.
  3449. - Resolved an edge case in get_unique_circ_id_by_conn where a smart
  3450. adversary could force us into an infinite loop.
  3451. o Features:
  3452. - Each onionskin handshake now includes a hash of the computed key,
  3453. to prove the server's identity and help perfect forward secrecy.
  3454. - Changed cell size from 256 to 512 bytes (working toward compatibility
  3455. with MorphMix).
  3456. - Changed cell length to 2 bytes, and moved it to the relay header.
  3457. - Implemented end-to-end integrity checking for the payloads of
  3458. relay cells.
  3459. - Separated streamid from 'recognized' (otherwise circuits will get
  3460. messed up when we try to have streams exit from the middle). We
  3461. use the integrity-checking to confirm that a cell is addressed to
  3462. this hop.
  3463. - Randomize the initial circid and streamid values, so an adversary who
  3464. breaks into a node can't learn how many circuits or streams have
  3465. been made so far.
  3466. Changes in version 0.0.2pre16 - 2003-12-14
  3467. o Bugfixes:
  3468. - Fixed a bug that made HUP trigger an assert
  3469. - Fixed a bug where a circuit that immediately failed wasn't being
  3470. counted as a failed circuit in counting retries.
  3471. o Features:
  3472. - Now we close the circuit when we get a truncated cell: otherwise we're
  3473. open to an anonymity attack where a bad node in the path truncates
  3474. the circuit and then we open streams at him.
  3475. - Add port ranges to exit policies
  3476. - Add a conservative default exit policy
  3477. - Warn if you're running tor as root
  3478. - on HUP, retry OR connections and close/rebind listeners
  3479. - options.EntryNodes: try these nodes first when picking the first node
  3480. - options.ExitNodes: if your best choices happen to include any of
  3481. your preferred exit nodes, you choose among just those preferred
  3482. exit nodes.
  3483. - options.ExcludedNodes: nodes that are never picked in path building
  3484. Changes in version 0.0.2pre15 - 2003-12-03
  3485. o Robustness and bugfixes:
  3486. - Sometimes clients would cache incorrect DNS resolves, which would
  3487. really screw things up.
  3488. - An OP that goes offline would slowly leak all its sockets and stop
  3489. working.
  3490. - A wide variety of bugfixes in exit node selection, exit policy
  3491. handling, and processing pending streams when a new circuit is
  3492. established.
  3493. - Pick nodes for a path only from those the directory says are up
  3494. - Choose randomly from all running dirservers, not always the first one
  3495. - Increase allowed http header size for directory fetch.
  3496. - Stop writing to stderr (if we're daemonized it will be closed).
  3497. - Enable -g always, so cores will be more useful to me.
  3498. - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
  3499. o Documentation:
  3500. - Wrote a man page. It lists commonly used options.
  3501. o Configuration:
  3502. - Change default loglevel to warn.
  3503. - Make PidFile default to null rather than littering in your CWD.
  3504. - OnionRouter config option is now obsolete. Instead it just checks
  3505. ORPort>0.
  3506. - Moved to a single unified torrc file for both clients and servers.
  3507. Changes in version 0.0.2pre14 - 2003-11-29
  3508. o Robustness and bugfixes:
  3509. - Force the admin to make the DataDirectory himself
  3510. - to get ownership/permissions right
  3511. - so clients no longer make a DataDirectory and then never use it
  3512. - fix bug where a client who was offline for 45 minutes would never
  3513. pull down a directory again
  3514. - fix (or at least hide really well) the dns assert bug that was
  3515. causing server crashes
  3516. - warnings and improved robustness wrt clockskew for certs
  3517. - use the native daemon(3) to daemonize, when available
  3518. - exit if bind() fails
  3519. - exit if neither socksport nor orport is defined
  3520. - include our own tor_timegm (Win32 doesn't have its own)
  3521. - bugfix for win32 with lots of connections
  3522. - fix minor bias in PRNG
  3523. - make dirserver more robust to corrupt cached directory
  3524. o Documentation:
  3525. - Wrote the design document (woo)
  3526. o Circuit building and exit policies:
  3527. - Circuits no longer try to use nodes that the directory has told them
  3528. are down.
  3529. - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
  3530. bitcounts (18.0.0.0/8).
  3531. - Make AP connections standby for a circuit if no suitable circuit
  3532. exists, rather than failing
  3533. - Circuits choose exit node based on addr/port, exit policies, and
  3534. which AP connections are standing by
  3535. - Bump min pathlen from 2 to 3
  3536. - Relay end cells have a payload to describe why the stream ended.
  3537. - If the stream failed because of exit policy, try again with a new
  3538. circuit.
  3539. - Clients have a dns cache to remember resolved addresses.
  3540. - Notice more quickly when we have no working circuits
  3541. o Configuration:
  3542. - APPort is now called SocksPort
  3543. - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
  3544. where to bind
  3545. - RecommendedVersions is now a config variable rather than
  3546. hardcoded (for dirservers)
  3547. - Reloads config on HUP
  3548. - Usage info on -h or --help
  3549. - If you set User and Group config vars, it'll setu/gid to them.
  3550. Changes in version 0.0.2pre13 - 2003-10-19
  3551. o General stability:
  3552. - SSL_write no longer fails when it returns WANTWRITE and the number
  3553. of bytes in the buf has changed by the next SSL_write call.
  3554. - Fix segfault fetching directory when network is down
  3555. - Fix a variety of minor memory leaks
  3556. - Dirservers reload the fingerprints file on HUP, so I don't have
  3557. to take down the network when I approve a new router
  3558. - Default server config file has explicit Address line to specify fqdn
  3559. o Buffers:
  3560. - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
  3561. - Make listener connections not ever alloc bufs
  3562. o Autoconf improvements:
  3563. - don't clobber an external CFLAGS in ./configure
  3564. - Make install now works
  3565. - create var/lib/tor on make install
  3566. - autocreate a tor.sh initscript to help distribs
  3567. - autocreate the torrc and sample-server-torrc with correct paths
  3568. o Log files and Daemonizing now work:
  3569. - If --DebugLogFile is specified, log to it at -l debug
  3570. - If --LogFile is specified, use it instead of commandline
  3571. - If --RunAsDaemon is set, tor forks and backgrounds on startup