12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304 |
- /* Copyright (c) 2001-2004, Roger Dingledine.
- * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
- * Copyright (c) 2007-2018, The Tor Project, Inc. */
- /* See LICENSE for licensing information */
- #include "orconfig.h"
- #define CONNECTION_EDGE_PRIVATE
- #define RELAY_PRIVATE
- #include "core/or/or.h"
- #include "core/or/channel.h"
- #include "core/or/connection_edge.h"
- #include "core/or/connection_or.h"
- #include "app/config/config.h"
- #include "lib/crypt_ops/crypto_rand.h"
- #include "core/crypto/onion.h"
- #include "core/crypto/onion_tap.h"
- #include "core/crypto/onion_fast.h"
- #include "core/crypto/onion_ntor.h"
- #include "core/or/relay.h"
- #include "core/or/cell_st.h"
- #include "core/or/cell_queue_st.h"
- #include "core/or/var_cell_st.h"
- #include "test/test.h"
- #include <stdlib.h>
- #include <string.h>
- static void
- test_cfmt_relay_header(void *arg)
- {
- relay_header_t rh;
- const uint8_t hdr_1[RELAY_HEADER_SIZE] =
- "\x03" "\x00\x00" "\x21\x22" "ABCD" "\x01\x03";
- uint8_t hdr_out[RELAY_HEADER_SIZE];
- (void)arg;
- tt_int_op(sizeof(hdr_1), OP_EQ, RELAY_HEADER_SIZE);
- relay_header_unpack(&rh, hdr_1);
- tt_int_op(rh.command, OP_EQ, 3);
- tt_int_op(rh.recognized, OP_EQ, 0);
- tt_int_op(rh.stream_id, OP_EQ, 0x2122);
- tt_mem_op(rh.integrity, OP_EQ, "ABCD", 4);
- tt_int_op(rh.length, OP_EQ, 0x103);
- relay_header_pack(hdr_out, &rh);
- tt_mem_op(hdr_out, OP_EQ, hdr_1, RELAY_HEADER_SIZE);
- done:
- ;
- }
- static void
- make_relay_cell(cell_t *out, uint8_t command,
- const void *body, size_t bodylen)
- {
- relay_header_t rh;
- memset(&rh, 0, sizeof(rh));
- rh.stream_id = 5;
- rh.command = command;
- rh.length = bodylen;
- out->command = CELL_RELAY;
- out->circ_id = 10;
- relay_header_pack(out->payload, &rh);
- memcpy(out->payload + RELAY_HEADER_SIZE, body, bodylen);
- }
- static void
- test_cfmt_begin_cells(void *arg)
- {
- cell_t cell;
- begin_cell_t bcell;
- uint8_t end_reason;
- (void)arg;
- /* Try begindir. */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN_DIR, "", 0);
- tt_int_op(0, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- tt_ptr_op(NULL, OP_EQ, bcell.address);
- tt_int_op(0, OP_EQ, bcell.flags);
- tt_int_op(0, OP_EQ, bcell.port);
- tt_int_op(5, OP_EQ, bcell.stream_id);
- tt_int_op(1, OP_EQ, bcell.is_begindir);
- /* A Begindir with extra stuff. */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN_DIR, "12345", 5);
- tt_int_op(0, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- tt_ptr_op(NULL, OP_EQ, bcell.address);
- tt_int_op(0, OP_EQ, bcell.flags);
- tt_int_op(0, OP_EQ, bcell.port);
- tt_int_op(5, OP_EQ, bcell.stream_id);
- tt_int_op(1, OP_EQ, bcell.is_begindir);
- /* A short but valid begin cell */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "a.b:9", 6);
- tt_int_op(0, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- tt_str_op("a.b", OP_EQ, bcell.address);
- tt_int_op(0, OP_EQ, bcell.flags);
- tt_int_op(9, OP_EQ, bcell.port);
- tt_int_op(5, OP_EQ, bcell.stream_id);
- tt_int_op(0, OP_EQ, bcell.is_begindir);
- tor_free(bcell.address);
- /* A significantly loner begin cell */
- memset(&bcell, 0x7f, sizeof(bcell));
- {
- const char c[] = "here-is-a-nice-long.hostname.com:65535";
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, c, strlen(c)+1);
- }
- tt_int_op(0, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- tt_str_op("here-is-a-nice-long.hostname.com", OP_EQ, bcell.address);
- tt_int_op(0, OP_EQ, bcell.flags);
- tt_int_op(65535, OP_EQ, bcell.port);
- tt_int_op(5, OP_EQ, bcell.stream_id);
- tt_int_op(0, OP_EQ, bcell.is_begindir);
- tor_free(bcell.address);
- /* An IPv4 begin cell. */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "18.9.22.169:80", 15);
- tt_int_op(0, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- tt_str_op("18.9.22.169", OP_EQ, bcell.address);
- tt_int_op(0, OP_EQ, bcell.flags);
- tt_int_op(80, OP_EQ, bcell.port);
- tt_int_op(5, OP_EQ, bcell.stream_id);
- tt_int_op(0, OP_EQ, bcell.is_begindir);
- tor_free(bcell.address);
- /* An IPv6 begin cell. Let's make sure we handle colons*/
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN,
- "[2620::6b0:b:1a1a:0:26e5:480e]:80", 34);
- tt_int_op(0, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- tt_str_op("[2620::6b0:b:1a1a:0:26e5:480e]", OP_EQ, bcell.address);
- tt_int_op(0, OP_EQ, bcell.flags);
- tt_int_op(80, OP_EQ, bcell.port);
- tt_int_op(5, OP_EQ, bcell.stream_id);
- tt_int_op(0, OP_EQ, bcell.is_begindir);
- tor_free(bcell.address);
- /* a begin cell with extra junk but not enough for flags. */
- memset(&bcell, 0x7f, sizeof(bcell));
- {
- const char c[] = "another.example.com:80\x00\x01\x02";
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, c, sizeof(c)-1);
- }
- tt_int_op(0, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- tt_str_op("another.example.com", OP_EQ, bcell.address);
- tt_int_op(0, OP_EQ, bcell.flags);
- tt_int_op(80, OP_EQ, bcell.port);
- tt_int_op(5, OP_EQ, bcell.stream_id);
- tt_int_op(0, OP_EQ, bcell.is_begindir);
- tor_free(bcell.address);
- /* a begin cell with flags. */
- memset(&bcell, 0x7f, sizeof(bcell));
- {
- const char c[] = "another.example.com:443\x00\x01\x02\x03\x04";
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, c, sizeof(c)-1);
- }
- tt_int_op(0, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- tt_str_op("another.example.com", OP_EQ, bcell.address);
- tt_int_op(0x1020304, OP_EQ, bcell.flags);
- tt_int_op(443, OP_EQ, bcell.port);
- tt_int_op(5, OP_EQ, bcell.stream_id);
- tt_int_op(0, OP_EQ, bcell.is_begindir);
- tor_free(bcell.address);
- /* a begin cell with flags and even more cruft after that. */
- memset(&bcell, 0x7f, sizeof(bcell));
- {
- const char c[] = "a-further.example.com:22\x00\xee\xaa\x00\xffHi mom";
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, c, sizeof(c)-1);
- }
- tt_int_op(0, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- tt_str_op("a-further.example.com", OP_EQ, bcell.address);
- tt_int_op(0xeeaa00ff, OP_EQ, bcell.flags);
- tt_int_op(22, OP_EQ, bcell.port);
- tt_int_op(5, OP_EQ, bcell.stream_id);
- tt_int_op(0, OP_EQ, bcell.is_begindir);
- tor_free(bcell.address);
- /* bad begin cell: impossible length. */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "a.b:80", 7);
- cell.payload[9] = 0x01; /* Set length to 510 */
- cell.payload[10] = 0xfe;
- {
- relay_header_t rh;
- relay_header_unpack(&rh, cell.payload);
- tt_int_op(rh.length, OP_EQ, 510);
- }
- tt_int_op(-2, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- /* Bad begin cell: no body. */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "", 0);
- tt_int_op(-1, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- /* bad begin cell: no body. */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "", 0);
- tt_int_op(-1, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- /* bad begin cell: no colon */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "a.b", 4);
- tt_int_op(-1, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- /* bad begin cell: no ports */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "a.b:", 5);
- tt_int_op(-1, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- /* bad begin cell: bad port */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "a.b:xyz", 8);
- tt_int_op(-1, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "a.b:100000", 11);
- tt_int_op(-1, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- /* bad begin cell: no nul */
- memset(&bcell, 0x7f, sizeof(bcell));
- make_relay_cell(&cell, RELAY_COMMAND_BEGIN, "a.b:80", 6);
- tt_int_op(-1, OP_EQ, begin_cell_parse(&cell, &bcell, &end_reason));
- done:
- tor_free(bcell.address);
- }
- static void
- test_cfmt_connected_cells(void *arg)
- {
- relay_header_t rh;
- cell_t cell;
- tor_addr_t addr;
- int ttl, r;
- char *mem_op_hex_tmp = NULL;
- (void)arg;
- /* Let's try an oldschool one with nothing in it. */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED, "", 0);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(tor_addr_family(&addr), OP_EQ, AF_UNSPEC);
- tt_int_op(ttl, OP_EQ, -1);
- /* A slightly less oldschool one: only an IPv4 address */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED, "\x20\x30\x40\x50", 4);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(tor_addr_family(&addr), OP_EQ, AF_INET);
- tt_str_op(fmt_addr(&addr), OP_EQ, "32.48.64.80");
- tt_int_op(ttl, OP_EQ, -1);
- /* Bogus but understandable: truncated TTL */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED, "\x11\x12\x13\x14\x15", 5);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(tor_addr_family(&addr), OP_EQ, AF_INET);
- tt_str_op(fmt_addr(&addr), OP_EQ, "17.18.19.20");
- tt_int_op(ttl, OP_EQ, -1);
- /* Regular IPv4 one: address and TTL */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED,
- "\x02\x03\x04\x05\x00\x00\x0e\x10", 8);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(tor_addr_family(&addr), OP_EQ, AF_INET);
- tt_str_op(fmt_addr(&addr), OP_EQ, "2.3.4.5");
- tt_int_op(ttl, OP_EQ, 3600);
- /* IPv4 with too-big TTL */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED,
- "\x02\x03\x04\x05\xf0\x00\x00\x00", 8);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(tor_addr_family(&addr), OP_EQ, AF_INET);
- tt_str_op(fmt_addr(&addr), OP_EQ, "2.3.4.5");
- tt_int_op(ttl, OP_EQ, -1);
- /* IPv6 (ttl is mandatory) */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED,
- "\x00\x00\x00\x00\x06"
- "\x26\x07\xf8\xb0\x40\x0c\x0c\x02"
- "\x00\x00\x00\x00\x00\x00\x00\x68"
- "\x00\x00\x02\x58", 25);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(tor_addr_family(&addr), OP_EQ, AF_INET6);
- tt_str_op(fmt_addr(&addr), OP_EQ, "2607:f8b0:400c:c02::68");
- tt_int_op(ttl, OP_EQ, 600);
- /* IPv6 (ttl too big) */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED,
- "\x00\x00\x00\x00\x06"
- "\x26\x07\xf8\xb0\x40\x0c\x0c\x02"
- "\x00\x00\x00\x00\x00\x00\x00\x68"
- "\x90\x00\x02\x58", 25);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(tor_addr_family(&addr), OP_EQ, AF_INET6);
- tt_str_op(fmt_addr(&addr), OP_EQ, "2607:f8b0:400c:c02::68");
- tt_int_op(ttl, OP_EQ, -1);
- /* Bogus size: 3. */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED,
- "\x00\x01\x02", 3);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, -1);
- /* Bogus family: 7. */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED,
- "\x00\x00\x00\x00\x07"
- "\x26\x07\xf8\xb0\x40\x0c\x0c\x02"
- "\x00\x00\x00\x00\x00\x00\x00\x68"
- "\x90\x00\x02\x58", 25);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, -1);
- /* Truncated IPv6. */
- make_relay_cell(&cell, RELAY_COMMAND_CONNECTED,
- "\x00\x00\x00\x00\x06"
- "\x26\x07\xf8\xb0\x40\x0c\x0c\x02"
- "\x00\x00\x00\x00\x00\x00\x00\x68"
- "\x00\x00\x02", 24);
- relay_header_unpack(&rh, cell.payload);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, -1);
- /* Now make sure we can generate connected cells correctly. */
- /* Try an IPv4 address */
- memset(&rh, 0, sizeof(rh));
- memset(&cell, 0, sizeof(cell));
- tor_addr_parse(&addr, "30.40.50.60");
- rh.length = connected_cell_format_payload(cell.payload+RELAY_HEADER_SIZE,
- &addr, 1024);
- tt_int_op(rh.length, OP_EQ, 8);
- test_memeq_hex(cell.payload+RELAY_HEADER_SIZE, "1e28323c" "00000e10");
- /* Try parsing it. */
- tor_addr_make_unspec(&addr);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(tor_addr_family(&addr), OP_EQ, AF_INET);
- tt_str_op(fmt_addr(&addr), OP_EQ, "30.40.50.60");
- tt_int_op(ttl, OP_EQ, 3600); /* not 1024, since we clipped to 3600 */
- /* Try an IPv6 address */
- memset(&rh, 0, sizeof(rh));
- memset(&cell, 0, sizeof(cell));
- tor_addr_parse(&addr, "2620::6b0:b:1a1a:0:26e5:480e");
- rh.length = connected_cell_format_payload(cell.payload+RELAY_HEADER_SIZE,
- &addr, 3600);
- tt_int_op(rh.length, OP_EQ, 25);
- test_memeq_hex(cell.payload + RELAY_HEADER_SIZE,
- "00000000" "06"
- "2620000006b0000b1a1a000026e5480e" "00000e10");
- /* Try parsing it. */
- tor_addr_make_unspec(&addr);
- r = connected_cell_parse(&rh, &cell, &addr, &ttl);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(tor_addr_family(&addr), OP_EQ, AF_INET6);
- tt_str_op(fmt_addr(&addr), OP_EQ, "2620:0:6b0:b:1a1a:0:26e5:480e");
- tt_int_op(ttl, OP_EQ, 3600);
- done:
- tor_free(mem_op_hex_tmp);
- }
- static void
- test_cfmt_create_cells(void *arg)
- {
- uint8_t b[MAX_ONIONSKIN_CHALLENGE_LEN];
- create_cell_t cc;
- cell_t cell;
- cell_t cell2;
- (void)arg;
- /* === Let's try parsing some good cells! */
- /* A valid create cell. */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, TAP_ONIONSKIN_CHALLENGE_LEN);
- cell.command = CELL_CREATE;
- memcpy(cell.payload, b, TAP_ONIONSKIN_CHALLENGE_LEN);
- tt_int_op(0, OP_EQ, create_cell_parse(&cc, &cell));
- tt_int_op(CELL_CREATE, OP_EQ, cc.cell_type);
- tt_int_op(ONION_HANDSHAKE_TYPE_TAP, OP_EQ, cc.handshake_type);
- tt_int_op(TAP_ONIONSKIN_CHALLENGE_LEN, OP_EQ, cc.handshake_len);
- tt_mem_op(cc.onionskin,OP_EQ, b, TAP_ONIONSKIN_CHALLENGE_LEN + 10);
- tt_int_op(0, OP_EQ, create_cell_format(&cell2, &cc));
- tt_int_op(cell.command, OP_EQ, cell2.command);
- tt_mem_op(cell.payload,OP_EQ, cell2.payload, CELL_PAYLOAD_SIZE);
- /* A valid create_fast cell. */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, CREATE_FAST_LEN);
- cell.command = CELL_CREATE_FAST;
- memcpy(cell.payload, b, CREATE_FAST_LEN);
- tt_int_op(0, OP_EQ, create_cell_parse(&cc, &cell));
- tt_int_op(CELL_CREATE_FAST, OP_EQ, cc.cell_type);
- tt_int_op(ONION_HANDSHAKE_TYPE_FAST, OP_EQ, cc.handshake_type);
- tt_int_op(CREATE_FAST_LEN, OP_EQ, cc.handshake_len);
- tt_mem_op(cc.onionskin,OP_EQ, b, CREATE_FAST_LEN + 10);
- tt_int_op(0, OP_EQ, create_cell_format(&cell2, &cc));
- tt_int_op(cell.command, OP_EQ, cell2.command);
- tt_mem_op(cell.payload,OP_EQ, cell2.payload, CELL_PAYLOAD_SIZE);
- /* A valid create2 cell with a TAP payload */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, TAP_ONIONSKIN_CHALLENGE_LEN);
- cell.command = CELL_CREATE2;
- memcpy(cell.payload, "\x00\x00\x00\xBA", 4); /* TAP, 186 bytes long */
- memcpy(cell.payload+4, b, TAP_ONIONSKIN_CHALLENGE_LEN);
- tt_int_op(0, OP_EQ, create_cell_parse(&cc, &cell));
- tt_int_op(CELL_CREATE2, OP_EQ, cc.cell_type);
- tt_int_op(ONION_HANDSHAKE_TYPE_TAP, OP_EQ, cc.handshake_type);
- tt_int_op(TAP_ONIONSKIN_CHALLENGE_LEN, OP_EQ, cc.handshake_len);
- tt_mem_op(cc.onionskin,OP_EQ, b, TAP_ONIONSKIN_CHALLENGE_LEN + 10);
- tt_int_op(0, OP_EQ, create_cell_format(&cell2, &cc));
- tt_int_op(cell.command, OP_EQ, cell2.command);
- tt_mem_op(cell.payload,OP_EQ, cell2.payload, CELL_PAYLOAD_SIZE);
- /* A valid create2 cell with an ntor payload */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, NTOR_ONIONSKIN_LEN);
- cell.command = CELL_CREATE2;
- memcpy(cell.payload, "\x00\x02\x00\x54", 4); /* ntor, 84 bytes long */
- memcpy(cell.payload+4, b, NTOR_ONIONSKIN_LEN);
- tt_int_op(0, OP_EQ, create_cell_parse(&cc, &cell));
- tt_int_op(CELL_CREATE2, OP_EQ, cc.cell_type);
- tt_int_op(ONION_HANDSHAKE_TYPE_NTOR, OP_EQ, cc.handshake_type);
- tt_int_op(NTOR_ONIONSKIN_LEN, OP_EQ, cc.handshake_len);
- tt_mem_op(cc.onionskin,OP_EQ, b, NTOR_ONIONSKIN_LEN + 10);
- tt_int_op(0, OP_EQ, create_cell_format(&cell2, &cc));
- tt_int_op(cell.command, OP_EQ, cell2.command);
- tt_mem_op(cell.payload,OP_EQ, cell2.payload, CELL_PAYLOAD_SIZE);
- /* A valid create cell with an ntor payload, in legacy format. */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, NTOR_ONIONSKIN_LEN);
- cell.command = CELL_CREATE;
- memcpy(cell.payload, "ntorNTORntorNTOR", 16);
- memcpy(cell.payload+16, b, NTOR_ONIONSKIN_LEN);
- tt_int_op(0, OP_EQ, create_cell_parse(&cc, &cell));
- tt_int_op(CELL_CREATE, OP_EQ, cc.cell_type);
- tt_int_op(ONION_HANDSHAKE_TYPE_NTOR, OP_EQ, cc.handshake_type);
- tt_int_op(NTOR_ONIONSKIN_LEN, OP_EQ, cc.handshake_len);
- tt_mem_op(cc.onionskin,OP_EQ, b, NTOR_ONIONSKIN_LEN + 10);
- tt_int_op(0, OP_EQ, create_cell_format(&cell2, &cc));
- tt_int_op(cell.command, OP_EQ, cell2.command);
- tt_mem_op(cell.payload,OP_EQ, cell2.payload, CELL_PAYLOAD_SIZE);
- /* == Okay, now let's try to parse some impossible stuff. */
- /* It has to be some kind of a create cell! */
- cell.command = CELL_CREATED;
- tt_int_op(-1, OP_EQ, create_cell_parse(&cc, &cell));
- /* You can't actually make an unparseable CREATE or CREATE_FAST cell. */
- /* Try some CREATE2 cells. First with a bad type. */
- cell.command = CELL_CREATE2;
- memcpy(cell.payload, "\x00\x50\x00\x99", 4); /* Type 0x50???? */
- tt_int_op(-1, OP_EQ, create_cell_parse(&cc, &cell));
- /* Now a good type with an incorrect length. */
- memcpy(cell.payload, "\x00\x00\x00\xBC", 4); /* TAP, 187 bytes.*/
- tt_int_op(-1, OP_EQ, create_cell_parse(&cc, &cell));
- /* Now a good type with a ridiculous length. */
- memcpy(cell.payload, "\x00\x00\x02\x00", 4); /* TAP, 512 bytes.*/
- tt_int_op(-1, OP_EQ, create_cell_parse(&cc, &cell));
- /* == Time to try formatting bad cells. The important thing is that
- we reject big lengths, so just check that for now. */
- cc.handshake_len = 512;
- tt_int_op(-1, OP_EQ, create_cell_format(&cell2, &cc));
- /* == Try formatting a create2 cell we don't understand. XXXX */
- done:
- ;
- }
- static void
- test_cfmt_created_cells(void *arg)
- {
- uint8_t b[512];
- created_cell_t cc;
- cell_t cell;
- cell_t cell2;
- (void)arg;
- /* A good CREATED cell */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, TAP_ONIONSKIN_REPLY_LEN);
- cell.command = CELL_CREATED;
- memcpy(cell.payload, b, TAP_ONIONSKIN_REPLY_LEN);
- tt_int_op(0, OP_EQ, created_cell_parse(&cc, &cell));
- tt_int_op(CELL_CREATED, OP_EQ, cc.cell_type);
- tt_int_op(TAP_ONIONSKIN_REPLY_LEN, OP_EQ, cc.handshake_len);
- tt_mem_op(cc.reply,OP_EQ, b, TAP_ONIONSKIN_REPLY_LEN + 10);
- tt_int_op(0, OP_EQ, created_cell_format(&cell2, &cc));
- tt_int_op(cell.command, OP_EQ, cell2.command);
- tt_mem_op(cell.payload,OP_EQ, cell2.payload, CELL_PAYLOAD_SIZE);
- /* A good CREATED_FAST cell */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, CREATED_FAST_LEN);
- cell.command = CELL_CREATED_FAST;
- memcpy(cell.payload, b, CREATED_FAST_LEN);
- tt_int_op(0, OP_EQ, created_cell_parse(&cc, &cell));
- tt_int_op(CELL_CREATED_FAST, OP_EQ, cc.cell_type);
- tt_int_op(CREATED_FAST_LEN, OP_EQ, cc.handshake_len);
- tt_mem_op(cc.reply,OP_EQ, b, CREATED_FAST_LEN + 10);
- tt_int_op(0, OP_EQ, created_cell_format(&cell2, &cc));
- tt_int_op(cell.command, OP_EQ, cell2.command);
- tt_mem_op(cell.payload,OP_EQ, cell2.payload, CELL_PAYLOAD_SIZE);
- /* A good CREATED2 cell with short reply */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, 64);
- cell.command = CELL_CREATED2;
- memcpy(cell.payload, "\x00\x40", 2);
- memcpy(cell.payload+2, b, 64);
- tt_int_op(0, OP_EQ, created_cell_parse(&cc, &cell));
- tt_int_op(CELL_CREATED2, OP_EQ, cc.cell_type);
- tt_int_op(64, OP_EQ, cc.handshake_len);
- tt_mem_op(cc.reply,OP_EQ, b, 80);
- tt_int_op(0, OP_EQ, created_cell_format(&cell2, &cc));
- tt_int_op(cell.command, OP_EQ, cell2.command);
- tt_mem_op(cell.payload,OP_EQ, cell2.payload, CELL_PAYLOAD_SIZE);
- /* A good CREATED2 cell with maximal reply */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, 496);
- cell.command = CELL_CREATED2;
- memcpy(cell.payload, "\x01\xF0", 2);
- memcpy(cell.payload+2, b, 496);
- tt_int_op(0, OP_EQ, created_cell_parse(&cc, &cell));
- tt_int_op(CELL_CREATED2, OP_EQ, cc.cell_type);
- tt_int_op(496, OP_EQ, cc.handshake_len);
- tt_mem_op(cc.reply,OP_EQ, b, 496);
- tt_int_op(0, OP_EQ, created_cell_format(&cell2, &cc));
- tt_int_op(cell.command, OP_EQ, cell2.command);
- tt_mem_op(cell.payload,OP_EQ, cell2.payload, CELL_PAYLOAD_SIZE);
- /* Bogus CREATED2 cell: too long! */
- memset(&cell, 0, sizeof(cell));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, 496);
- cell.command = CELL_CREATED2;
- memcpy(cell.payload, "\x01\xF1", 2);
- tt_int_op(-1, OP_EQ, created_cell_parse(&cc, &cell));
- /* Unformattable CREATED2 cell: too long! */
- cc.handshake_len = 497;
- tt_int_op(-1, OP_EQ, created_cell_format(&cell2, &cc));
- done:
- ;
- }
- static void
- test_cfmt_extend_cells(void *arg)
- {
- cell_t cell;
- uint8_t b[512];
- extend_cell_t ec;
- create_cell_t *cc = &ec.create_cell;
- uint8_t p[RELAY_PAYLOAD_SIZE];
- uint8_t p2[RELAY_PAYLOAD_SIZE];
- uint8_t p2_cmd;
- uint16_t p2_len;
- char *mem_op_hex_tmp = NULL;
- (void) arg;
- /* Let's start with a simple EXTEND cell. */
- memset(p, 0, sizeof(p));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, TAP_ONIONSKIN_CHALLENGE_LEN);
- memcpy(p, "\x12\xf4\x00\x01\x01\x02", 6); /* 18 244 0 1 : 258 */
- memcpy(p+6,b,TAP_ONIONSKIN_CHALLENGE_LEN);
- memcpy(p+6+TAP_ONIONSKIN_CHALLENGE_LEN, "electroencephalogram", 20);
- tt_int_op(0, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND,
- p, 26+TAP_ONIONSKIN_CHALLENGE_LEN));
- tt_int_op(RELAY_COMMAND_EXTEND, OP_EQ, ec.cell_type);
- tt_str_op("18.244.0.1", OP_EQ, fmt_addr(&ec.orport_ipv4.addr));
- tt_int_op(258, OP_EQ, ec.orport_ipv4.port);
- tt_int_op(AF_UNSPEC, OP_EQ, tor_addr_family(&ec.orport_ipv6.addr));
- tt_mem_op(ec.node_id,OP_EQ, "electroencephalogram", 20);
- tt_int_op(cc->cell_type, OP_EQ, CELL_CREATE);
- tt_int_op(cc->handshake_type, OP_EQ, ONION_HANDSHAKE_TYPE_TAP);
- tt_int_op(cc->handshake_len, OP_EQ, TAP_ONIONSKIN_CHALLENGE_LEN);
- tt_mem_op(cc->onionskin,OP_EQ, b, TAP_ONIONSKIN_CHALLENGE_LEN+20);
- tt_int_op(0, OP_EQ, extend_cell_format(&p2_cmd, &p2_len, p2, &ec));
- tt_int_op(p2_cmd, OP_EQ, RELAY_COMMAND_EXTEND);
- tt_int_op(p2_len, OP_EQ, 26+TAP_ONIONSKIN_CHALLENGE_LEN);
- tt_mem_op(p2,OP_EQ, p, RELAY_PAYLOAD_SIZE);
- /* Let's do an ntor stuffed in a legacy EXTEND cell */
- memset(p, 0, sizeof(p));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, NTOR_ONIONSKIN_LEN);
- memcpy(p, "\x12\xf4\x00\x01\x01\x02", 6); /* 18 244 0 1 : 258 */
- memcpy(p+6,"ntorNTORntorNTOR", 16);
- memcpy(p+22, b, NTOR_ONIONSKIN_LEN);
- memcpy(p+6+TAP_ONIONSKIN_CHALLENGE_LEN, "electroencephalogram", 20);
- tt_int_op(0, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND,
- p, 26+TAP_ONIONSKIN_CHALLENGE_LEN));
- tt_int_op(RELAY_COMMAND_EXTEND, OP_EQ, ec.cell_type);
- tt_str_op("18.244.0.1", OP_EQ, fmt_addr(&ec.orport_ipv4.addr));
- tt_int_op(258, OP_EQ, ec.orport_ipv4.port);
- tt_int_op(AF_UNSPEC, OP_EQ, tor_addr_family(&ec.orport_ipv6.addr));
- tt_mem_op(ec.node_id,OP_EQ, "electroencephalogram", 20);
- tt_int_op(cc->cell_type, OP_EQ, CELL_CREATE2);
- tt_int_op(cc->handshake_type, OP_EQ, ONION_HANDSHAKE_TYPE_NTOR);
- tt_int_op(cc->handshake_len, OP_EQ, NTOR_ONIONSKIN_LEN);
- tt_mem_op(cc->onionskin,OP_EQ, b, NTOR_ONIONSKIN_LEN+20);
- tt_int_op(0, OP_EQ, extend_cell_format(&p2_cmd, &p2_len, p2, &ec));
- tt_int_op(p2_cmd, OP_EQ, RELAY_COMMAND_EXTEND);
- tt_int_op(p2_len, OP_EQ, 26+TAP_ONIONSKIN_CHALLENGE_LEN);
- tt_mem_op(p2,OP_EQ, p, RELAY_PAYLOAD_SIZE);
- tt_int_op(0, OP_EQ, create_cell_format_relayed(&cell, cc));
- /* Now let's do a minimal ntor EXTEND2 cell. */
- memset(&ec, 0xff, sizeof(ec));
- memset(p, 0, sizeof(p));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, NTOR_ONIONSKIN_LEN);
- /* 2 items; one 18.244.0.1:61681 */
- memcpy(p, "\x02\x00\x06\x12\xf4\x00\x01\xf0\xf1", 9);
- /* The other is a digest. */
- memcpy(p+9, "\x02\x14" "anarchoindividualist", 22);
- /* Prep for the handshake: type and length */
- memcpy(p+31, "\x00\x02\x00\x54", 4);
- memcpy(p+35, b, NTOR_ONIONSKIN_LEN);
- tt_int_op(0, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, 35+NTOR_ONIONSKIN_LEN));
- tt_int_op(RELAY_COMMAND_EXTEND2, OP_EQ, ec.cell_type);
- tt_str_op("18.244.0.1", OP_EQ, fmt_addr(&ec.orport_ipv4.addr));
- tt_int_op(61681, OP_EQ, ec.orport_ipv4.port);
- tt_int_op(AF_UNSPEC, OP_EQ, tor_addr_family(&ec.orport_ipv6.addr));
- tt_mem_op(ec.node_id,OP_EQ, "anarchoindividualist", 20);
- tt_int_op(cc->cell_type, OP_EQ, CELL_CREATE2);
- tt_int_op(cc->handshake_type, OP_EQ, ONION_HANDSHAKE_TYPE_NTOR);
- tt_int_op(cc->handshake_len, OP_EQ, NTOR_ONIONSKIN_LEN);
- tt_mem_op(cc->onionskin,OP_EQ, b, NTOR_ONIONSKIN_LEN+20);
- tt_int_op(0, OP_EQ, extend_cell_format(&p2_cmd, &p2_len, p2, &ec));
- tt_int_op(p2_cmd, OP_EQ, RELAY_COMMAND_EXTEND2);
- tt_int_op(p2_len, OP_EQ, 35+NTOR_ONIONSKIN_LEN);
- tt_mem_op(p2,OP_EQ, p, RELAY_PAYLOAD_SIZE);
- /* Now let's do a fanciful EXTEND2 cell. */
- memset(&ec, 0xff, sizeof(ec));
- memset(p, 0, sizeof(p));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, 99);
- /* 4 items; one 18 244 0 1 61681 */
- memcpy(p, "\x04\x00\x06\x12\xf4\x00\x01\xf0\xf1", 9);
- /* One is a digest. */
- memcpy(p+9, "\x02\x14" "anthropomorphization", 22);
- /* One is an ipv6 address */
- memcpy(p+31, "\x01\x12\x20\x02\x00\x00\x00\x00\x00\x00"
- "\x00\x00\x00\x00\x00\xf0\xc5\x1e\x11\x12", 20);
- /* One is the Konami code. */
- memcpy(p+51, "\xf0\x20upupdowndownleftrightleftrightba", 34);
- /* Prep for the handshake: weird type and length */
- memcpy(p+85, "\x01\x05\x00\x63", 4);
- memcpy(p+89, b, 99);
- tt_int_op(0, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2, p, 89+99));
- tt_int_op(RELAY_COMMAND_EXTEND2, OP_EQ, ec.cell_type);
- tt_str_op("18.244.0.1", OP_EQ, fmt_addr(&ec.orport_ipv4.addr));
- tt_int_op(61681, OP_EQ, ec.orport_ipv4.port);
- tt_str_op("2002::f0:c51e", OP_EQ, fmt_addr(&ec.orport_ipv6.addr));
- tt_int_op(4370, OP_EQ, ec.orport_ipv6.port);
- tt_assert(ed25519_public_key_is_zero(&ec.ed_pubkey));
- tt_mem_op(ec.node_id,OP_EQ, "anthropomorphization", 20);
- tt_int_op(cc->cell_type, OP_EQ, CELL_CREATE2);
- tt_int_op(cc->handshake_type, OP_EQ, 0x105);
- tt_int_op(cc->handshake_len, OP_EQ, 99);
- tt_mem_op(cc->onionskin,OP_EQ, b, 99+20);
- tt_int_op(0, OP_EQ, extend_cell_format(&p2_cmd, &p2_len, p2, &ec));
- tt_int_op(p2_cmd, OP_EQ, RELAY_COMMAND_EXTEND2);
- /* We'll generate it minus the IPv6 address and minus the konami code */
- tt_int_op(p2_len, OP_EQ, 89+99-34-20);
- test_memeq_hex(p2,
- /* Two items: one that same darn IP address. */
- "02000612F40001F0F1"
- /* The next is a digest : anthropomorphization */
- "0214616e7468726f706f6d6f727068697a6174696f6e"
- /* Now the handshake prologue */
- "01050063");
- tt_mem_op(p2+1+8+22+4,OP_EQ, b, 99+20);
- tt_int_op(0, OP_EQ, create_cell_format_relayed(&cell, cc));
- /* Now let's add an ed25519 key to that extend2 cell. */
- memcpy(ec.ed_pubkey.pubkey,
- "brownshoesdontmakeit/brownshoesd", 32);
- /* As before, since we aren't extending by ed25519. */
- get_options_mutable()->ExtendByEd25519ID = 0;
- tt_int_op(0, OP_EQ, extend_cell_format(&p2_cmd, &p2_len, p2, &ec));
- tt_int_op(p2_len, OP_EQ, 89+99-34-20);
- test_memeq_hex(p2,
- "02000612F40001F0F1"
- "0214616e7468726f706f6d6f727068697a6174696f6e"
- "01050063");
- /* Now try with the ed25519 ID. */
- get_options_mutable()->ExtendByEd25519ID = 1;
- tt_int_op(0, OP_EQ, extend_cell_format(&p2_cmd, &p2_len, p2, &ec));
- tt_int_op(p2_len, OP_EQ, 89+99-34-20 + 34);
- test_memeq_hex(p2,
- "03000612F40001F0F1"
- "0214616e7468726f706f6d6f727068697a6174696f6e"
- // ed digest follows:
- "0320" "62726f776e73686f6573646f6e746d616b656"
- "9742f62726f776e73686f657364"
- "01050063");
- /* Can we parse that? Did the key come through right? */
- memset(&ec, 0, sizeof(ec));
- tt_int_op(0, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p2, p2_len));
- tt_mem_op("brownshoesdontmakeit/brownshoesd", OP_EQ,
- ec.ed_pubkey.pubkey, 32);
- /* == Now try parsing some junk */
- /* Try a too-long handshake */
- memset(p, 0, sizeof(p));
- memcpy(p, "\x02\x00\x06\x12\xf4\x00\x01\xf0\xf1", 9);
- memcpy(p+9, "\x02\x14" "anarchoindividualist", 22);
- memcpy(p+31, "\xff\xff\x01\xd0", 4);
- tt_int_op(-1, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, sizeof(p)));
- /* Try two identities. */
- memset(p, 0, sizeof(p));
- memcpy(p, "\x03\x00\x06\x12\xf4\x00\x01\xf0\xf1", 9);
- memcpy(p+9, "\x02\x14" "anarchoindividualist", 22);
- memcpy(p+31, "\x02\x14" "autodepolymerization", 22);
- memcpy(p+53, "\xff\xff\x00\x10", 4);
- tt_int_op(-1, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, sizeof(p)));
- /* No identities. */
- memset(p, 0, sizeof(p));
- memcpy(p, "\x01\x00\x06\x12\xf4\x00\x01\xf0\xf1", 9);
- memcpy(p+53, "\xff\xff\x00\x10", 4);
- tt_int_op(-1, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, sizeof(p)));
- /* Try a bad IPv4 address (too long, too short)*/
- memset(p, 0, sizeof(p));
- memcpy(p, "\x02\x00\x07\x12\xf4\x00\x01\xf0\xf1\xff", 10);
- memcpy(p+10, "\x02\x14" "anarchoindividualist", 22);
- memcpy(p+32, "\xff\xff\x00\x10", 4);
- tt_int_op(-1, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, sizeof(p)));
- memset(p, 0, sizeof(p));
- memcpy(p, "\x02\x00\x05\x12\xf4\x00\x01\xf0", 8);
- memcpy(p+8, "\x02\x14" "anarchoindividualist", 22);
- memcpy(p+30, "\xff\xff\x00\x10", 4);
- tt_int_op(-1, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, sizeof(p)));
- /* IPv6 address (too long, too short, no IPv4)*/
- memset(p, 0, sizeof(p));
- memcpy(p, "\x03\x00\x06\x12\xf4\x00\x01\xf0\xf1", 9);
- memcpy(p+9, "\x02\x14" "anarchoindividualist", 22);
- memcpy(p+31, "\x01\x13" "xxxxxxxxxxxxxxxxYYZ", 19);
- memcpy(p+50, "\xff\xff\x00\x20", 4);
- tt_int_op(-1, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, sizeof(p)));
- memset(p, 0, sizeof(p));
- memcpy(p, "\x03\x00\x06\x12\xf4\x00\x01\xf0\xf1", 9);
- memcpy(p+9, "\x02\x14" "anarchoindividualist", 22);
- memcpy(p+31, "\x01\x11" "xxxxxxxxxxxxxxxxY", 17);
- memcpy(p+48, "\xff\xff\x00\x20", 4);
- tt_int_op(-1, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, sizeof(p)));
- memset(p, 0, sizeof(p));
- memcpy(p, "\x02", 1);
- memcpy(p+1, "\x02\x14" "anarchoindividualist", 22);
- memcpy(p+23, "\x01\x12" "xxxxxxxxxxxxxxxxYY", 18);
- memcpy(p+41, "\xff\xff\x00\x20", 4);
- tt_int_op(-1, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, sizeof(p)));
- /* Running out of space in specifiers */
- memset(p,0,sizeof(p));
- memcpy(p, "\x05\x0a\xff", 3);
- memcpy(p+3+255, "\x0a\xff", 2);
- tt_int_op(-1, OP_EQ, extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2,
- p, sizeof(p)));
- /* Fuzz, because why not. */
- memset(&ec, 0xff, sizeof(ec));
- {
- int i;
- memset(p, 0, sizeof(p));
- for (i = 0; i < 10000; ++i) {
- int n = crypto_rand_int(sizeof(p));
- crypto_rand((char *)p, n);
- extend_cell_parse(&ec, RELAY_COMMAND_EXTEND2, p, n);
- }
- }
- done:
- tor_free(mem_op_hex_tmp);
- }
- static void
- test_cfmt_extended_cells(void *arg)
- {
- uint8_t b[512];
- extended_cell_t ec;
- created_cell_t *cc = &ec.created_cell;
- uint8_t p[RELAY_PAYLOAD_SIZE];
- uint8_t p2[RELAY_PAYLOAD_SIZE];
- uint8_t p2_cmd;
- uint16_t p2_len;
- char *mem_op_hex_tmp = NULL;
- (void) arg;
- /* Try a regular EXTENDED cell. */
- memset(&ec, 0xff, sizeof(ec));
- memset(p, 0, sizeof(p));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, TAP_ONIONSKIN_REPLY_LEN);
- memcpy(p,b,TAP_ONIONSKIN_REPLY_LEN);
- tt_int_op(0, OP_EQ, extended_cell_parse(&ec, RELAY_COMMAND_EXTENDED, p,
- TAP_ONIONSKIN_REPLY_LEN));
- tt_int_op(RELAY_COMMAND_EXTENDED, OP_EQ, ec.cell_type);
- tt_int_op(cc->cell_type, OP_EQ, CELL_CREATED);
- tt_int_op(cc->handshake_len, OP_EQ, TAP_ONIONSKIN_REPLY_LEN);
- tt_mem_op(cc->reply,OP_EQ, b, TAP_ONIONSKIN_REPLY_LEN);
- tt_int_op(0, OP_EQ, extended_cell_format(&p2_cmd, &p2_len, p2, &ec));
- tt_int_op(RELAY_COMMAND_EXTENDED, OP_EQ, p2_cmd);
- tt_int_op(TAP_ONIONSKIN_REPLY_LEN, OP_EQ, p2_len);
- tt_mem_op(p2,OP_EQ, p, sizeof(p2));
- /* Try an EXTENDED2 cell */
- memset(&ec, 0xff, sizeof(ec));
- memset(p, 0, sizeof(p));
- memset(b, 0, sizeof(b));
- crypto_rand((char*)b, 42);
- memcpy(p,"\x00\x2a",2);
- memcpy(p+2,b,42);
- tt_int_op(0, OP_EQ,
- extended_cell_parse(&ec, RELAY_COMMAND_EXTENDED2, p, 2+42));
- tt_int_op(RELAY_COMMAND_EXTENDED2, OP_EQ, ec.cell_type);
- tt_int_op(cc->cell_type, OP_EQ, CELL_CREATED2);
- tt_int_op(cc->handshake_len, OP_EQ, 42);
- tt_mem_op(cc->reply,OP_EQ, b, 42+10);
- tt_int_op(0, OP_EQ, extended_cell_format(&p2_cmd, &p2_len, p2, &ec));
- tt_int_op(RELAY_COMMAND_EXTENDED2, OP_EQ, p2_cmd);
- tt_int_op(2+42, OP_EQ, p2_len);
- tt_mem_op(p2,OP_EQ, p, sizeof(p2));
- /* Try an almost-too-long EXTENDED2 cell */
- memcpy(p, "\x01\xf0", 2);
- tt_int_op(0, OP_EQ,
- extended_cell_parse(&ec, RELAY_COMMAND_EXTENDED2, p, sizeof(p)));
- /* Now try a too-long extended2 cell. That's the only misparse I can think
- * of. */
- memcpy(p, "\x01\xf1", 2);
- tt_int_op(-1, OP_EQ,
- extended_cell_parse(&ec, RELAY_COMMAND_EXTENDED2, p, sizeof(p)));
- done:
- tor_free(mem_op_hex_tmp);
- }
- static void
- test_cfmt_resolved_cells(void *arg)
- {
- smartlist_t *addrs = smartlist_new();
- relay_header_t rh;
- cell_t cell;
- int r, errcode;
- address_ttl_t *a;
- (void)arg;
- #define CLEAR_CELL() do { \
- memset(&cell, 0, sizeof(cell)); \
- memset(&rh, 0, sizeof(rh)); \
- } while (0)
- #define CLEAR_ADDRS() do { \
- SMARTLIST_FOREACH(addrs, address_ttl_t *, aa_, \
- address_ttl_free(aa_); ); \
- smartlist_clear(addrs); \
- } while (0)
- #define SET_CELL(s) do { \
- CLEAR_CELL(); \
- memcpy(cell.payload + RELAY_HEADER_SIZE, (s), sizeof((s))-1); \
- rh.length = sizeof((s))-1; \
- rh.command = RELAY_COMMAND_RESOLVED; \
- errcode = -1; \
- } while (0)
- /* The cell format is one or more answers; each of the form
- * type [1 byte---0:hostname, 4:ipv4, 6:ipv6, f0:err-transient, f1:err]
- * length [1 byte]
- * body [length bytes]
- * ttl [4 bytes]
- */
- /* Let's try an empty cell */
- SET_CELL("");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- CLEAR_ADDRS(); /* redundant but let's be consistent */
- /* Cell with one ipv4 addr */
- SET_CELL("\x04\x04" "\x7f\x00\x02\x0a" "\x00\00\x01\x00");
- tt_int_op(rh.length, OP_EQ, 10);
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 1);
- a = smartlist_get(addrs, 0);
- tt_str_op(fmt_addr(&a->addr), OP_EQ, "127.0.2.10");
- tt_ptr_op(a->hostname, OP_EQ, NULL);
- tt_int_op(a->ttl, OP_EQ, 256);
- CLEAR_ADDRS();
- /* Cell with one ipv6 addr */
- SET_CELL("\x06\x10"
- "\x20\x02\x90\x90\x00\x00\x00\x00"
- "\x00\x00\x00\x00\xf0\xf0\xab\xcd"
- "\x02\00\x00\x01");
- tt_int_op(rh.length, OP_EQ, 22);
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 1);
- a = smartlist_get(addrs, 0);
- tt_str_op(fmt_addr(&a->addr), OP_EQ, "2002:9090::f0f0:abcd");
- tt_ptr_op(a->hostname, OP_EQ, NULL);
- tt_int_op(a->ttl, OP_EQ, 0x2000001);
- CLEAR_ADDRS();
- /* Cell with one hostname */
- SET_CELL("\x00\x11"
- "motherbrain.zebes"
- "\x00\00\x00\x00");
- tt_int_op(rh.length, OP_EQ, 23);
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 1);
- a = smartlist_get(addrs, 0);
- tt_assert(tor_addr_is_null(&a->addr));
- tt_str_op(a->hostname, OP_EQ, "motherbrain.zebes");
- tt_int_op(a->ttl, OP_EQ, 0);
- CLEAR_ADDRS();
- #define LONG_NAME \
- "this-hostname-has-255-characters.in-order-to-test-whether-very-long.ho" \
- "stnames-are-accepted.i-am-putting-it-in-a-macro-because-although.this-" \
- "function-is-already-very-full.of-copy-and-pasted-stuff.having-this-app" \
- "ear-more-than-once-would-bother-me-somehow.is"
- tt_int_op(strlen(LONG_NAME), OP_EQ, 255);
- SET_CELL("\x00\xff"
- LONG_NAME
- "\x00\01\x00\x00");
- tt_int_op(rh.length, OP_EQ, 261);
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 1);
- a = smartlist_get(addrs, 0);
- tt_assert(tor_addr_is_null(&a->addr));
- tt_str_op(a->hostname, OP_EQ, LONG_NAME);
- tt_int_op(a->ttl, OP_EQ, 65536);
- CLEAR_ADDRS();
- /* Cells with an error */
- SET_CELL("\xf0\x2b"
- "I'm sorry, Dave. I'm afraid I can't do that"
- "\x00\x11\x22\x33");
- tt_int_op(rh.length, OP_EQ, 49);
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, RESOLVED_TYPE_ERROR_TRANSIENT);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- CLEAR_ADDRS();
- SET_CELL("\xf1\x40"
- "This hostname is too important for me to allow you to resolve it"
- "\x00\x00\x00\x00");
- tt_int_op(rh.length, OP_EQ, 70);
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, RESOLVED_TYPE_ERROR);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- CLEAR_ADDRS();
- /* Cell with an unrecognized type */
- SET_CELL("\xee\x16"
- "fault in the AE35 unit"
- "\x09\x09\x01\x01");
- tt_int_op(rh.length, OP_EQ, 28);
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- CLEAR_ADDRS();
- /* Cell with one of each */
- SET_CELL(/* unrecognized: */
- "\xee\x16"
- "fault in the AE35 unit"
- "\x09\x09\x01\x01"
- /* error: */
- "\xf0\x2b"
- "I'm sorry, Dave. I'm afraid I can't do that"
- "\x00\x11\x22\x33"
- /* IPv6: */
- "\x06\x10"
- "\x20\x02\x90\x90\x00\x00\x00\x00"
- "\x00\x00\x00\x00\xf0\xf0\xab\xcd"
- "\x02\00\x00\x01"
- /* IPv4: */
- "\x04\x04" "\x7f\x00\x02\x0a" "\x00\00\x01\x00"
- /* Hostname: */
- "\x00\x11"
- "motherbrain.zebes"
- "\x00\00\x00\x00"
- );
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0); /* no error reported; we got answers */
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 3);
- a = smartlist_get(addrs, 0);
- tt_str_op(fmt_addr(&a->addr), OP_EQ, "2002:9090::f0f0:abcd");
- tt_ptr_op(a->hostname, OP_EQ, NULL);
- tt_int_op(a->ttl, OP_EQ, 0x2000001);
- a = smartlist_get(addrs, 1);
- tt_str_op(fmt_addr(&a->addr), OP_EQ, "127.0.2.10");
- tt_ptr_op(a->hostname, OP_EQ, NULL);
- tt_int_op(a->ttl, OP_EQ, 256);
- a = smartlist_get(addrs, 2);
- tt_assert(tor_addr_is_null(&a->addr));
- tt_str_op(a->hostname, OP_EQ, "motherbrain.zebes");
- tt_int_op(a->ttl, OP_EQ, 0);
- CLEAR_ADDRS();
- /* Cell with several of similar type */
- SET_CELL(/* IPv4 */
- "\x04\x04" "\x7f\x00\x02\x0a" "\x00\00\x01\x00"
- "\x04\x04" "\x08\x08\x08\x08" "\x00\00\x01\x05"
- "\x04\x04" "\x7f\xb0\x02\xb0" "\x00\01\xff\xff"
- /* IPv6 */
- "\x06\x10"
- "\x20\x02\x90\x00\x00\x00\x00\x00"
- "\x00\x00\x00\x00\xca\xfe\xf0\x0d"
- "\x00\00\x00\x01"
- "\x06\x10"
- "\x20\x02\x90\x01\x00\x00\x00\x00"
- "\x00\x00\x00\x00\x00\xfa\xca\xde"
- "\x00\00\x00\x03");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 5);
- a = smartlist_get(addrs, 0);
- tt_str_op(fmt_addr(&a->addr), OP_EQ, "127.0.2.10");
- tt_ptr_op(a->hostname, OP_EQ, NULL);
- tt_int_op(a->ttl, OP_EQ, 256);
- a = smartlist_get(addrs, 1);
- tt_str_op(fmt_addr(&a->addr), OP_EQ, "8.8.8.8");
- tt_ptr_op(a->hostname, OP_EQ, NULL);
- tt_int_op(a->ttl, OP_EQ, 261);
- a = smartlist_get(addrs, 2);
- tt_str_op(fmt_addr(&a->addr), OP_EQ, "127.176.2.176");
- tt_ptr_op(a->hostname, OP_EQ, NULL);
- tt_int_op(a->ttl, OP_EQ, 131071);
- a = smartlist_get(addrs, 3);
- tt_str_op(fmt_addr(&a->addr), OP_EQ, "2002:9000::cafe:f00d");
- tt_ptr_op(a->hostname, OP_EQ, NULL);
- tt_int_op(a->ttl, OP_EQ, 1);
- a = smartlist_get(addrs, 4);
- tt_str_op(fmt_addr(&a->addr), OP_EQ, "2002:9001::fa:cade");
- tt_ptr_op(a->hostname, OP_EQ, NULL);
- tt_int_op(a->ttl, OP_EQ, 3);
- CLEAR_ADDRS();
- /* Full cell */
- #define LONG_NAME2 \
- "this-name-has-231-characters.so-that-it-plus-LONG_NAME-can-completely-" \
- "fill-up-the-payload-of-a-cell.its-important-to-check-for-the-full-thin" \
- "g-case.to-avoid-off-by-one-errors.where-full-things-are-misreported-as" \
- ".overflowing-by-one.z"
- tt_int_op(strlen(LONG_NAME2), OP_EQ, 231);
- SET_CELL("\x00\xff"
- LONG_NAME
- "\x00\01\x00\x00"
- "\x00\xe7"
- LONG_NAME2
- "\x00\01\x00\x00");
- tt_int_op(rh.length, OP_EQ, RELAY_PAYLOAD_SIZE);
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, 0);
- tt_int_op(smartlist_len(addrs), OP_EQ, 2);
- a = smartlist_get(addrs, 0);
- tt_str_op(a->hostname, OP_EQ, LONG_NAME);
- a = smartlist_get(addrs, 1);
- tt_str_op(a->hostname, OP_EQ, LONG_NAME2);
- CLEAR_ADDRS();
- /* BAD CELLS */
- /* Invalid length on an IPv4 */
- SET_CELL("\x04\x03zzz1234");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- SET_CELL("\x04\x04" "\x7f\x00\x02\x0a" "\x00\00\x01\x00"
- "\x04\x05zzzzz1234");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- /* Invalid length on an IPv6 */
- SET_CELL("\x06\x03zzz1234");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- SET_CELL("\x04\x04" "\x7f\x00\x02\x0a" "\x00\00\x01\x00"
- "\x06\x17wwwwwwwwwwwwwwwww1234");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- SET_CELL("\x04\x04" "\x7f\x00\x02\x0a" "\x00\00\x01\x00"
- "\x06\x10xxxx");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- /* Empty hostname */
- SET_CELL("\x00\x00xxxx");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- /* rh.length out of range */
- CLEAR_CELL();
- rh.length = 499;
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(errcode, OP_EQ, 0);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- /* Item length extends beyond rh.length */
- CLEAR_CELL();
- SET_CELL("\x00\xff"
- LONG_NAME
- "\x00\01\x00\x00");
- rh.length -= 1;
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- rh.length -= 5;
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- SET_CELL("\x04\x04" "\x7f\x00\x02\x0a" "\x00\00\x01\x00");
- rh.length -= 1;
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- SET_CELL("\xee\x10"
- "\x20\x02\x90\x01\x00\x00\x00\x00"
- "\x00\x00\x00\x00\x00\xfa\xca\xde"
- "\x00\00\x00\x03");
- rh.length -= 1;
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- /* Truncated item after first character */
- SET_CELL("\x04");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- SET_CELL("\xee");
- r = resolved_cell_parse(&cell, &rh, addrs, &errcode);
- tt_int_op(r, OP_EQ, -1);
- tt_int_op(smartlist_len(addrs), OP_EQ, 0);
- done:
- CLEAR_ADDRS();
- CLEAR_CELL();
- smartlist_free(addrs);
- #undef CLEAR_ADDRS
- #undef CLEAR_CELL
- }
- static void
- test_cfmt_is_destroy(void *arg)
- {
- cell_t cell;
- packed_cell_t packed;
- circid_t circid = 0;
- channel_t *chan;
- (void)arg;
- chan = tor_malloc_zero(sizeof(channel_t));
- memset(&cell, 0xff, sizeof(cell));
- cell.circ_id = 3003;
- cell.command = CELL_RELAY;
- cell_pack(&packed, &cell, 0);
- chan->wide_circ_ids = 0;
- tt_assert(! packed_cell_is_destroy(chan, &packed, &circid));
- tt_int_op(circid, OP_EQ, 0);
- cell_pack(&packed, &cell, 1);
- chan->wide_circ_ids = 1;
- tt_assert(! packed_cell_is_destroy(chan, &packed, &circid));
- tt_int_op(circid, OP_EQ, 0);
- cell.command = CELL_DESTROY;
- cell_pack(&packed, &cell, 0);
- chan->wide_circ_ids = 0;
- tt_assert(packed_cell_is_destroy(chan, &packed, &circid));
- tt_int_op(circid, OP_EQ, 3003);
- circid = 0;
- cell_pack(&packed, &cell, 1);
- chan->wide_circ_ids = 1;
- tt_assert(packed_cell_is_destroy(chan, &packed, &circid));
- done:
- tor_free(chan);
- }
- #define TEST(name, flags) \
- { #name, test_cfmt_ ## name, flags, 0, NULL }
- struct testcase_t cell_format_tests[] = {
- TEST(relay_header, 0),
- TEST(begin_cells, 0),
- TEST(connected_cells, 0),
- TEST(create_cells, 0),
- TEST(created_cells, 0),
- TEST(extend_cells, TT_FORK),
- TEST(extended_cells, 0),
- TEST(resolved_cells, 0),
- TEST(is_destroy, 0),
- END_OF_TESTCASES
- };
|