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- /* Copyright 2001,2002,2003 Roger Dingledine, Matej Pfajfar. */
- /* See LICENSE for licensing information */
- /* $Id$ */
- /**
- * /file config.c
- *
- * /brief Code to parse and interpret configuration files.
- *
- **/
- #include "or.h"
- /** Enumeration of types which option values can take */
- typedef enum config_type_t {
- CONFIG_TYPE_STRING = 0, /**< An arbitrary string. */
- CONFIG_TYPE_INT, /**< An integer */
- CONFIG_TYPE_DOUBLE, /**< A floating-point value */
- CONFIG_TYPE_BOOL, /**< A boolean value, expressed as 0 or 1. */
- CONFIG_TYPE_LINELIST, /**< Uninterpreted config lines */
- } config_type_t;
- /** Largest allowed config line */
- #define CONFIG_LINE_T_MAXLEN 4096
- static FILE *config_open(const unsigned char *filename);
- static int config_close(FILE *f);
- static struct config_line_t *config_get_commandlines(int argc, char **argv);
- static struct config_line_t *config_get_lines(FILE *f);
- static void config_free_lines(struct config_line_t *front);
- static int config_compare(struct config_line_t *c, const char *key, config_type_t type, void *arg);
- static int config_assign(or_options_t *options, struct config_line_t *list);
- /** Open a configuration file for reading */
- static FILE *config_open(const unsigned char *filename) {
- tor_assert(filename);
- if (strspn(filename,CONFIG_LEGAL_FILENAME_CHARACTERS) != strlen(filename)) {
- /* filename has illegal letters */
- return NULL;
- }
- return fopen(filename, "r");
- }
- /** Close the configuration file */
- static int config_close(FILE *f) {
- tor_assert(f);
- return fclose(f);
- }
- /** Helper: Read a list of configuration options from the command line. */
- static struct config_line_t *config_get_commandlines(int argc, char **argv) {
- struct config_line_t *new;
- struct config_line_t *front = NULL;
- char *s;
- int i = 1;
- while(i < argc-1) {
- if(!strcmp(argv[i],"-f")) {
- // log(LOG_DEBUG,"Commandline: skipping over -f.");
- i+=2; /* this is the config file option. ignore it. */
- continue;
- }
- new = tor_malloc(sizeof(struct config_line_t));
- s = argv[i];
- while(*s == '-')
- s++;
- new->key = tor_strdup(s);
- new->value = tor_strdup(argv[i+1]);
- log(LOG_DEBUG,"Commandline: parsed keyword '%s', value '%s'",
- new->key, new->value);
- new->next = front;
- front = new;
- i += 2;
- }
- return front;
- }
- /** Helper: allocate a new configuration option mapping 'key' to 'val',
- * prepend it to 'front', and return the newly allocated config_line_t */
- static struct config_line_t *
- config_line_prepend(struct config_line_t *front,
- const char *key,
- const char *val)
- {
- struct config_line_t *newline;
- newline = tor_malloc(sizeof(struct config_line_t));
- newline->key = tor_strdup(key);
- newline->value = tor_strdup(val);
- newline->next = front;
- return newline;
- }
- /** Helper: parse the config file and strdup into key/value
- * strings. Return list, or NULL if parsing the file failed. Warn and
- * ignore any misformatted lines. */
- static struct config_line_t *config_get_lines(FILE *f) {
- struct config_line_t *front = NULL;
- char line[CONFIG_LINE_T_MAXLEN];
- int result;
- char *key, *value;
- while( (result=parse_line_from_file(line,sizeof(line),f,&key,&value)) > 0) {
- front = config_line_prepend(front, key, value);
- }
- if(result < 0)
- return NULL;
- return front;
- }
- /**
- * Free all the configuration lines on the linked list <b>front</b>.
- */
- static void config_free_lines(struct config_line_t *front) {
- struct config_line_t *tmp;
- while(front) {
- tmp = front;
- front = tmp->next;
- free(tmp->key);
- free(tmp->value);
- free(tmp);
- }
- }
- /** Search the linked list <b>c</b> for any option whose key is <b>key</b>.
- * If such an option is found, interpret it as of type <b>type</b>, and store
- * the result in <b>arg</b>. If the option is misformatted, log a warning and
- * skip it.
- */
- static int config_compare(struct config_line_t *c, const char *key, config_type_t type, void *arg) {
- int i;
- if(strncasecmp(c->key,key,strlen(c->key)))
- return 0;
- if(strcasecmp(c->key,key)) {
- tor_free(c->key);
- c->key = tor_strdup(key);
- }
- /* it's a match. cast and assign. */
- log_fn(LOG_DEBUG,"Recognized keyword '%s' as %s, using value '%s'.",c->key,key,c->value);
- switch(type) {
- case CONFIG_TYPE_INT:
- *(int *)arg = atoi(c->value);
- break;
- case CONFIG_TYPE_BOOL:
- i = atoi(c->value);
- if (i != 0 && i != 1) {
- log(LOG_WARN, "Boolean keyword '%s' expects 0 or 1", c->key);
- return 0;
- }
- *(int *)arg = i;
- break;
- case CONFIG_TYPE_STRING:
- tor_free(*(char **)arg);
- *(char **)arg = tor_strdup(c->value);
- break;
- case CONFIG_TYPE_DOUBLE:
- *(double *)arg = atof(c->value);
- break;
- case CONFIG_TYPE_LINELIST:
- /* Note: this reverses the order that the lines appear in. That's
- * just fine, since we build up the list of lines reversed in the
- * first place. */
- *(struct config_line_t**)arg =
- config_line_prepend(*(struct config_line_t**)arg, c->key, c->value);
- break;
- }
- return 1;
- }
- /** Iterate through the linked list of options <b>list</b>.
- * For each item, convert as appropriate and assign to <b>options</b>.
- * If an item is unrecognized, return -1 immediately,
- * else return 0 for success. */
- static int config_assign(or_options_t *options, struct config_line_t *list) {
- while(list) {
- if(
- /* order matters here! abbreviated arguments use the first match. */
- /* string options */
- config_compare(list, "Address", CONFIG_TYPE_STRING, &options->Address) ||
- config_compare(list, "BandwidthRate", CONFIG_TYPE_INT, &options->BandwidthRate) ||
- config_compare(list, "BandwidthBurst", CONFIG_TYPE_INT, &options->BandwidthBurst) ||
- config_compare(list, "DebugLogFile", CONFIG_TYPE_STRING, &options->DebugLogFile) ||
- config_compare(list, "DataDirectory", CONFIG_TYPE_STRING, &options->DataDirectory) ||
- config_compare(list, "DirPort", CONFIG_TYPE_INT, &options->DirPort) ||
- config_compare(list, "DirBindAddress", CONFIG_TYPE_STRING, &options->DirBindAddress) ||
- config_compare(list, "DirFetchPostPeriod",CONFIG_TYPE_INT, &options->DirFetchPostPeriod) ||
- config_compare(list, "ExitNodes", CONFIG_TYPE_STRING, &options->ExitNodes) ||
- config_compare(list, "EntryNodes", CONFIG_TYPE_STRING, &options->EntryNodes) ||
- config_compare(list, "ExitPolicy", CONFIG_TYPE_STRING, &options->ExitPolicy) ||
- config_compare(list, "ExcludeNodes", CONFIG_TYPE_STRING, &options->ExcludeNodes) ||
- config_compare(list, "Group", CONFIG_TYPE_STRING, &options->Group) ||
- config_compare(list, "IgnoreVersion", CONFIG_TYPE_BOOL, &options->IgnoreVersion) ||
- config_compare(list, "KeepalivePeriod",CONFIG_TYPE_INT, &options->KeepalivePeriod) ||
- config_compare(list, "LogLevel", CONFIG_TYPE_LINELIST, &options->LogOptions) ||
- config_compare(list, "LogFile", CONFIG_TYPE_LINELIST, &options->LogOptions) ||
- config_compare(list, "LinkPadding", CONFIG_TYPE_BOOL, &options->LinkPadding) ||
- config_compare(list, "MaxConn", CONFIG_TYPE_INT, &options->MaxConn) ||
- config_compare(list, "MaxOnionsPending",CONFIG_TYPE_INT, &options->MaxOnionsPending) ||
- config_compare(list, "Nickname", CONFIG_TYPE_STRING, &options->Nickname) ||
- config_compare(list, "NewCircuitPeriod",CONFIG_TYPE_INT, &options->NewCircuitPeriod) ||
- config_compare(list, "NumCpus", CONFIG_TYPE_INT, &options->NumCpus) ||
- config_compare(list, "ORPort", CONFIG_TYPE_INT, &options->ORPort) ||
- config_compare(list, "ORBindAddress", CONFIG_TYPE_STRING, &options->ORBindAddress) ||
- config_compare(list, "PidFile", CONFIG_TYPE_STRING, &options->PidFile) ||
- config_compare(list, "PathlenCoinWeight",CONFIG_TYPE_DOUBLE, &options->PathlenCoinWeight) ||
- config_compare(list, "RouterFile", CONFIG_TYPE_STRING, &options->RouterFile) ||
- config_compare(list, "RunAsDaemon", CONFIG_TYPE_BOOL, &options->RunAsDaemon) ||
- config_compare(list, "RecommendedVersions",CONFIG_TYPE_STRING, &options->RecommendedVersions) ||
- config_compare(list, "RendNodes", CONFIG_TYPE_STRING, &options->RendNodes) ||
- config_compare(list, "RendExcludeNodes",CONFIG_TYPE_STRING, &options->RendExcludeNodes) ||
- config_compare(list, "SocksPort", CONFIG_TYPE_INT, &options->SocksPort) ||
- config_compare(list, "SocksBindAddress",CONFIG_TYPE_STRING,&options->SocksBindAddress) ||
- config_compare(list, "TrafficShaping", CONFIG_TYPE_BOOL, &options->TrafficShaping) ||
- config_compare(list, "User", CONFIG_TYPE_STRING, &options->User) ||
- config_compare(list, "RunTesting", CONFIG_TYPE_BOOL, &options->RunTesting) ||
- config_compare(list, "HiddenServiceDir", CONFIG_TYPE_LINELIST, &options->RendConfigLines)||
- config_compare(list, "HiddenServicePort", CONFIG_TYPE_LINELIST, &options->RendConfigLines)||
- config_compare(list, "HiddenServiceNodes", CONFIG_TYPE_LINELIST, &options->RendConfigLines)||
- config_compare(list, "HiddenServiceExcludeNodes", CONFIG_TYPE_LINELIST, &options->RendConfigLines)
- ) {
- /* then we're ok. it matched something. */
- } else {
- log_fn(LOG_WARN,"Unknown keyword '%s'. Failing.",list->key);
- return -1;
- }
- list = list->next;
- }
- return 0;
- }
- /* XXX are there any other specifiers we want to give so making
- * a several-thousand-byte string is less painful? */
- const char default_dirservers_string[] =
- "router moria1 18.244.0.188 9001 9021 9031\n"
- "platform Tor 0.0.6rc1 on Linux moria.mit.edu i686\n"
- "published 2004-04-25 21:54:28\n"
- "bandwidth 800000 10000000\n"
- "onion-key\n"
- "-----BEGIN RSA PUBLIC KEY-----\n"
- "MIGJAoGBANoIvHieyHUTzIacbnWOnyTyzGrLOdXqbcjz2GGMxyHEd5K1bO1ZBNHP\n"
- "9i5qLQpN5viFk2K2rEGuG8tFgDEzSWZEtBqv3NVfUdiumdERWMBwlaQ0MVK4C+jf\n"
- "y5gZ8KI3o9ZictgPS1AQF+Kk932/vIHTuRIUKb4ILTnQilNvID0NAgMBAAE=\n"
- "-----END RSA PUBLIC KEY-----\n"
- "signing-key\n"
- "-----BEGIN RSA PUBLIC KEY-----\n"
- "MIGJAoGBAMHa0ZC/jo2Q2DrwKYF/6ZbmZ27PFYG91u4gUzzmZ/VXLpZ8wNzEV3oW\n"
- "nt+I61048fBiC1frT1/DZ351n2bLSk9zJbB6jyGZJn0380FPRX3+cXyXS0Gq8Ril\n"
- "xkhMQf5XuNFUb8UmYPSOH4WErjvYjKvU+gfjbK/82Jo9SuHpYz+BAgMBAAE=\n"
- "-----END RSA PUBLIC KEY-----\n"
- "reject 0.0.0.0/255.0.0.0:*\n"
- "reject 169.254.0.0/255.255.0.0:*\n"
- "reject 127.0.0.0/255.0.0.0:*\n"
- "reject 192.168.0.0/255.255.0.0:*\n"
- "reject 10.0.0.0/255.0.0.0:*\n"
- "reject 172.16.0.0/255.240.0.0:*\n"
- "accept *:20-22\n"
- "accept *:53\n"
- "accept *:79-80\n"
- "accept *:110\n"
- "accept *:143\n"
- "accept *:443\n"
- "accept *:873\n"
- "accept *:993\n"
- "accept *:995\n"
- "accept *:1024-65535\n"
- "reject *:*\n"
- "router-signature\n"
- "-----BEGIN SIGNATURE-----\n"
- "o1eAoRHDAEAXsnh5wN++vIwrupd+DbAJ2p3wxHDrmqxTpygzxxCnyQyhMfX03ua2\n"
- "4iplyNlwyFwzWcw0sk31otlO2HBYXT1V9G0YxGtKMOeOBMHjfGbUjGvEALHzWi4z\n"
- "8DXGJp13zgnUyP4ZA6xaGROwcT6oB5e7UlztvvpGxTg=\n"
- "-----END SIGNATURE-----\n"
- "\n"
- "router moria2 18.244.0.188 9002 9022 9032\n"
- "platform Tor 0.0.6rc1 on Linux moria.mit.edu i686\n"
- "published 2004-04-25 21:54:30\n"
- "bandwidth 800000 10000000\n"
- "onion-key\n"
- "-----BEGIN RSA PUBLIC KEY-----\n"
- "MIGJAoGBAM4Cc/npgYC54XrYLC+grVxJp7PDmNO2DRRJOxKttBBtvLpnR1UaueTi\n"
- "kyknT5kmlx+ihgZF/jmye//2dDUp2+kK/kSkpRV4xnDLXZmed+sNSQxqmm9TtZQ9\n"
- "/hjpxhp5J9HmUTYhntBs+4E4CUKokmrI6oRLoln4SA39AX9QLPcnAgMBAAE=\n"
- "-----END RSA PUBLIC KEY-----\n"
- "signing-key\n"
- "-----BEGIN RSA PUBLIC KEY-----\n"
- "MIGJAoGBAOcrht/y5rkaahfX7sMe2qnpqoPibsjTSJaDvsUtaNP/Bq0MgNDGOR48\n"
- "rtwfqTRff275Edkp/UYw3G3vSgKCJr76/bqOHCmkiZrnPV1zxNfrK18gNw2Cxre0\n"
- "nTA+fD8JQqpPtb8b0SnG9kwy75eS//sRu7TErie2PzGMxrf9LH0LAgMBAAE=\n"
- "-----END RSA PUBLIC KEY-----\n"
- "reject 0.0.0.0/255.0.0.0:*\n"
- "reject 169.254.0.0/255.255.0.0:*\n"
- "reject 127.0.0.0/255.0.0.0:*\n"
- "reject 192.168.0.0/255.255.0.0:*\n"
- "reject 10.0.0.0/255.0.0.0:*\n"
- "reject 172.16.0.0/255.240.0.0:*\n"
- "accept *:20-22\n"
- "accept *:53\n"
- "accept *:79-80\n"
- "accept *:110\n"
- "accept *:143\n"
- "accept *:443\n"
- "accept *:873\n"
- "accept *:993\n"
- "accept *:995\n"
- "accept *:1024-65535\n"
- "reject *:*\n"
- "router-signature\n"
- "-----BEGIN SIGNATURE-----\n"
- "RKROLwP1ExjTZeg6wuN0pzYqed9IJUd5lAe9hp4ritbnmJAgS6qfww6jgx61CfUR\n"
- "6SElhOLE7Q77jAdoL45Ji5pn/Y+Q+E+5lJm1E/ed9ha+YsOPaOc7z6GQ7E4mihCL\n"
- "gI1vsw92+P1Ty4RHj6fyD9DhbV19nh2Qs+pvGJOS2FY=\n"
- "-----END SIGNATURE-----\n"
- "\n"
- "router tor26 62.116.124.106 9001 9050 9030\n"
- "platform Tor 0.0.6 on Linux seppia i686\n"
- "published 2004-05-06 21:33:23\n"
- "bandwidth 500000 10000000\n"
- "onion-key\n"
- "-----BEGIN RSA PUBLIC KEY-----\n"
- "MIGJAoGBAMEHdDnpj3ik1AF1xe/VqjoguH2DbANifYqXXfempu0fS+tU9FGo6dU/\n"
- "fnVHAZwL9Ek9k2rMzumShi1RduK9p035R/Gk+PBBcLfvwYJ/Nat+ZO/L8jn/3bZe\n"
- "ieQd9CKj2LjNGKpRNry37vkwMGIOIlegwK+2us8aXJ7sIvlNts0TAgMBAAE=\n"
- "-----END RSA PUBLIC KEY-----\n"
- "signing-key\n"
- "-----BEGIN RSA PUBLIC KEY-----\n"
- "MIGJAoGBAMQgV2gXLbXgesWgeAsj8P1Uvm/zibrFXqwDq27lLKNgWGYGX2ax3LyT\n"
- "3nzI1Y5oLs4kPKTsMM5ft9aokwf417lKoCRlZc9ptfRbgxDx90c9GtWVmkrmDvCK\n"
- "ae59TMoXIiGfZiwWT6KKq5Zm9/Fu2Il3B2vHGkKJYKixmiBJRKp/AgMBAAE=\n"
- "-----END RSA PUBLIC KEY-----\n"
- "accept 62.245.184.24:25\n"
- "accept 62.116.124.106:6666-6670\n"
- "accept *:48099\n"
- "reject *:*\n"
- "router-signature\n"
- "-----BEGIN SIGNATURE-----\n"
- "qh/xRoqfLNFzPaB8VdpbdMAwRyuk5qjx4LeLVQ2pDwTZ55PqmG99+VKUNte2WTTD\n"
- "7dZEA7um2rueohGe4nYmvbhJWr20/I0ZxmWDRDvFy0b5nwzDMGvLvDw95Zu/XJQ2\n"
- "md32NE3y9VZCfbCN+GlvETX3fdR3Svzcm8Kzesg2/s4=\n"
- "-----END SIGNATURE-----\n"
- ;
- int config_assign_default_dirservers(void) {
- if(router_load_routerlist_from_string(default_dirservers_string, 1) < 0) {
- log_fn(LOG_WARN,"Bug: the default dirservers internal string is corrupt.");
- return -1;
- }
- return 0;
- }
- /** Set <b>options</b> to a reasonable default.
- *
- * Call this function when they're using the default torrc but
- * we can't find it. For now, we just hard-code what comes in the
- * default torrc.
- */
- static int config_assign_default(or_options_t *options) {
- /* set them up as a client only */
- options->SocksPort = 9050;
- /* plus give them a dirservers file */
- if(config_assign_default_dirservers() < 0)
- return -1;
- return 0;
- }
- /** Print a usage message for tor. */
- static void print_usage(void) {
- printf("tor -f <torrc> [args]\n"
- "See man page for more options. This -h is probably obsolete.\n\n"
- "-b <bandwidth>\t\tbytes/second rate limiting\n"
- "-d <file>\t\tDebug file\n"
- // "-m <max>\t\tMax number of connections\n"
- "-l <level>\t\tLog level\n"
- "-r <file>\t\tList of known routers\n");
- printf("\nClient options:\n"
- "-e \"nick1 nick2 ...\"\t\tExit nodes\n"
- "-s <IP>\t\t\tPort to bind to for Socks\n"
- );
- printf("\nServer options:\n"
- "-n <nick>\t\tNickname of router\n"
- "-o <port>\t\tOR port to bind to\n"
- "-p <file>\t\tPID file\n"
- );
- }
- /**
- * Adjust <b>options</b> to contain a reasonable value for Address.
- */
- static int resolve_my_address(or_options_t *options) {
- struct in_addr in;
- struct hostent *rent;
- char localhostname[256];
- int explicit_ip=1;
- if(!options->Address) { /* then we need to guess our address */
- explicit_ip = 0; /* it's implicit */
- if(gethostname(localhostname,sizeof(localhostname)) < 0) {
- log_fn(LOG_WARN,"Error obtaining local hostname");
- return -1;
- }
- #if 0 /* don't worry about complaining, as long as it resolves */
- if(!strchr(localhostname,'.')) {
- log_fn(LOG_WARN,"fqdn '%s' has only one element. Misconfigured machine?",address);
- log_fn(LOG_WARN,"Try setting the Address line in your config file.");
- return -1;
- }
- #endif
- options->Address = tor_strdup(localhostname);
- log_fn(LOG_DEBUG,"Guessed local host name as '%s'",options->Address);
- }
- /* now we know options->Address is set. resolve it and keep only the IP */
- if(tor_inet_aton(options->Address, &in) == 0) {
- /* then we have to resolve it */
- explicit_ip = 0;
- rent = (struct hostent *)gethostbyname(options->Address);
- if (!rent) {
- log_fn(LOG_WARN,"Could not resolve Address %s. Failing.", options->Address);
- return -1;
- }
- tor_assert(rent->h_length == 4);
- memcpy(&in.s_addr, rent->h_addr,rent->h_length);
- }
- if(!explicit_ip && is_internal_IP(htonl(in.s_addr))) {
- log_fn(LOG_WARN,"Address '%s' resolves to private IP '%s'. "
- "Please set the Address config option to be the IP you want to use.",
- options->Address, inet_ntoa(in));
- return -1;
- }
- tor_free(options->Address);
- options->Address = tor_strdup(inet_ntoa(in));
- log_fn(LOG_DEBUG,"Resolved Address to %s.", options->Address);
- return 0;
- }
- /** Release storage held by <b>options</b> */
- static void free_options(or_options_t *options) {
- config_free_lines(options->LogOptions);
- tor_free(options->DebugLogFile);
- tor_free(options->DataDirectory);
- tor_free(options->RouterFile);
- tor_free(options->Nickname);
- tor_free(options->Address);
- tor_free(options->PidFile);
- tor_free(options->ExitNodes);
- tor_free(options->EntryNodes);
- tor_free(options->ExcludeNodes);
- tor_free(options->RendNodes);
- tor_free(options->RendExcludeNodes);
- tor_free(options->ExitPolicy);
- tor_free(options->SocksBindAddress);
- tor_free(options->ORBindAddress);
- tor_free(options->DirBindAddress);
- tor_free(options->RecommendedVersions);
- tor_free(options->User);
- tor_free(options->Group);
- config_free_lines(options->RendConfigLines);
- }
- /** Set <b>options</b> to hold reasonable defaults for most options. */
- static void init_options(or_options_t *options) {
- /* give reasonable values for each option. Defaults to zero. */
- memset(options,0,sizeof(or_options_t));
- options->LogOptions = NULL;
- options->ExitNodes = tor_strdup("");
- options->EntryNodes = tor_strdup("");
- options->ExcludeNodes = tor_strdup("");
- options->RendNodes = tor_strdup("");
- options->RendExcludeNodes = tor_strdup("");
- options->ExitPolicy = tor_strdup("");
- options->SocksBindAddress = tor_strdup("127.0.0.1");
- options->ORBindAddress = tor_strdup("0.0.0.0");
- options->DirBindAddress = tor_strdup("0.0.0.0");
- options->RecommendedVersions = NULL;
- options->PidFile = NULL; // tor_strdup("tor.pid");
- options->DataDirectory = NULL;
- options->PathlenCoinWeight = 0.3;
- options->MaxConn = 900;
- options->DirFetchPostPeriod = 600;
- options->KeepalivePeriod = 300;
- options->MaxOnionsPending = 100;
- options->NewCircuitPeriod = 30; /* twice a minute */
- options->BandwidthRate = 800000; /* at most 800kB/s total sustained incoming */
- options->BandwidthBurst = 10000000; /* max burst on the token bucket */
- options->NumCpus = 1;
- options->RendConfigLines = NULL;
- }
- /** Read a configuration file into <b>options</b>, finding the configuration
- * file location based on the command line. After loading the options,
- * validate them for consistency. Return 0 if success, <0 if failure. */
- int getconfig(int argc, char **argv, or_options_t *options) {
- struct config_line_t *cl;
- FILE *cf;
- char *fname;
- int i;
- int result = 0;
- static int first_load = 1;
- static char **backup_argv;
- static int backup_argc;
- char *previous_pidfile = NULL;
- int previous_runasdaemon = 0;
- int previous_orport = -1;
- int using_default_torrc;
- if(first_load) { /* first time we're called. save commandline args */
- backup_argv = argv;
- backup_argc = argc;
- first_load = 0;
- } else { /* we're reloading. need to clean up old ones first. */
- argv = backup_argv;
- argc = backup_argc;
- /* record some previous values, so we can fail if they change */
- if(options->PidFile)
- previous_pidfile = tor_strdup(options->PidFile);
- previous_runasdaemon = options->RunAsDaemon;
- previous_orport = options->ORPort;
- free_options(options);
- }
- init_options(options);
- if(argc > 1 && (!strcmp(argv[1], "-h") || !strcmp(argv[1],"--help"))) {
- print_usage();
- exit(0);
- }
- if(argc > 1 && (!strcmp(argv[1],"--version"))) {
- printf("Tor version %s.\n",VERSION);
- exit(0);
- }
- /* learn config file name, get config lines, assign them */
- i = 1;
- while(i < argc-1 && strcmp(argv[i],"-f")) {
- i++;
- }
- if(i < argc-1) { /* we found one */
- fname = argv[i+1];
- using_default_torrc = 0;
- } else { /* didn't find one, try CONFDIR */
- fname = CONFDIR "/torrc";
- using_default_torrc = 1;
- }
- log(LOG_DEBUG,"Opening config file '%s'",fname);
- cf = config_open(fname);
- if(!cf) {
- if(using_default_torrc == 1) {
- log(LOG_NOTICE, "Configuration file '%s' not present, using reasonable defaults.",fname);
- if(config_assign_default(options) < 0)
- return -1;
- } else {
- log(LOG_WARN, "Unable to open configuration file '%s'.",fname);
- return -1;
- }
- } else { /* it opened successfully. use it. */
- cl = config_get_lines(cf);
- if(!cl) return -1;
- if(config_assign(options,cl) < 0)
- return -1;
- config_free_lines(cl);
- config_close(cf);
- }
- /* go through command-line variables too */
- cl = config_get_commandlines(argc,argv);
- if(config_assign(options,cl) < 0)
- return -1;
- config_free_lines(cl);
- /* Validate options */
- /* first check if any of the previous options have changed but aren't allowed to */
- if(previous_pidfile && strcmp(previous_pidfile,options->PidFile)) {
- log_fn(LOG_WARN,"During reload, PidFile changed from %s to %s. Failing.",
- previous_pidfile, options->PidFile);
- return -1;
- }
- tor_free(previous_pidfile);
- if(previous_runasdaemon && !options->RunAsDaemon) {
- log_fn(LOG_WARN,"During reload, change from RunAsDaemon=1 to =0 not allowed. Failing.");
- return -1;
- }
- if(previous_orport == 0 && options->ORPort > 0) {
- log_fn(LOG_WARN,"During reload, change from ORPort=0 to >0 not allowed. Failing.");
- return -1;
- }
- if(options->ORPort < 0) {
- log(LOG_WARN,"ORPort option can't be negative.");
- result = -1;
- }
- if(options->ORPort && options->DataDirectory == NULL) {
- log(LOG_WARN,"DataDirectory option required if ORPort is set, but not found.");
- result = -1;
- }
- if (options->ORPort) {
- if (options->Nickname == NULL) {
- log_fn(LOG_WARN,"Nickname required if ORPort is set, but not found.");
- result = -1;
- } else {
- if (strspn(options->Nickname, LEGAL_NICKNAME_CHARACTERS) !=
- strlen(options->Nickname)) {
- log_fn(LOG_WARN, "Nickname '%s' contains illegal characters.", options->Nickname);
- result = -1;
- }
- if (strlen(options->Nickname) > MAX_NICKNAME_LEN) {
- log_fn(LOG_WARN, "Nickname '%s' has more than %d characters.",
- options->Nickname, MAX_NICKNAME_LEN);
- result = -1;
- }
- }
- }
- if(options->ORPort) { /* get an IP for ourselves */
- if(resolve_my_address(options) < 0)
- result = -1;
- }
- if(options->SocksPort < 0) {
- log(LOG_WARN,"SocksPort option can't be negative.");
- result = -1;
- }
- if(options->SocksPort == 0 && options->ORPort == 0) {
- log(LOG_WARN,"SocksPort and ORPort are both undefined? Quitting.");
- result = -1;
- }
- if(options->DirPort < 0) {
- log(LOG_WARN,"DirPort option can't be negative.");
- result = -1;
- }
- if(options->DirPort && options->RecommendedVersions == NULL) {
- log(LOG_WARN,"Directory servers must configure RecommendedVersions.");
- result = -1;
- }
- if(options->SocksPort > 1 &&
- (options->PathlenCoinWeight < 0.0 || options->PathlenCoinWeight >= 1.0)) {
- log(LOG_WARN,"PathlenCoinWeight option must be >=0.0 and <1.0.");
- result = -1;
- }
- if(options->MaxConn < 1) {
- log(LOG_WARN,"MaxConn option must be a non-zero positive integer.");
- result = -1;
- }
- if(options->MaxConn >= MAXCONNECTIONS) {
- log(LOG_WARN,"MaxConn option must be less than %d.", MAXCONNECTIONS);
- result = -1;
- }
- if(options->DirFetchPostPeriod < 1) {
- log(LOG_WARN,"DirFetchPostPeriod option must be positive.");
- result = -1;
- }
- if(options->DirFetchPostPeriod > MIN_ONION_KEY_LIFETIME/2) {
- log(LOG_WARN,"DirFetchPostPeriod is too large; clipping.");
- options->DirFetchPostPeriod = MIN_ONION_KEY_LIFETIME/2;
- }
- if(options->KeepalivePeriod < 1) {
- log(LOG_WARN,"KeepalivePeriod option must be positive.");
- result = -1;
- }
- /* XXX look at the various nicknamelists and make sure they're
- * valid and don't have hostnames that are too long.
- */
- if (rend_config_services(options) < 0) {
- result = -1;
- }
- return result;
- }
- static void add_single_log(struct config_line_t *level_opt,
- struct config_line_t *file_opt,
- int isDaemon)
- {
- int levelMin=-1, levelMax=-1;
- char *cp, *tmp_sev;
- if (level_opt) {
- cp = strchr(level_opt->value, '-');
- if (cp) {
- tmp_sev = tor_strndup(level_opt->value, cp - level_opt->value);
- levelMin = parse_log_level(tmp_sev);
- if (levelMin<0) {
- log_fn(LOG_WARN, "Unrecognized log severity %s: must be one of err|warn|notice|info|debug", tmp_sev);
- }
- tor_free(tmp_sev);
- levelMax = parse_log_level(cp+1);
- if (levelMax<0) {
- log_fn(LOG_WARN, "Unrecognized log severity %s: must be one of err|warn|notice|info|debug", cp+1);
- }
- } else {
- levelMin = parse_log_level(level_opt->value);
- if (levelMin<0) {
- log_fn(LOG_WARN, "Unrecognized log severity %s: must be one of err|warn|notice|info|debug", level_opt->value);
- }
- }
- }
- if (levelMin < 0 && levelMax < 0) {
- levelMin = LOG_NOTICE;
- levelMax = LOG_ERR;
- } else if (levelMin < 0) {
- levelMin = levelMax;
- } else {
- levelMax = LOG_ERR;
- }
- if (file_opt) {
- if (add_file_log(levelMin, levelMax, file_opt->value) < 0) {
- /* opening the log file failed! Use stderr and log a warning */
- add_stream_log(levelMin, levelMax, "<stderr>", stderr);
- log_fn(LOG_WARN, "Cannot write to LogFile '%s': %s.", file_opt->value,
- strerror(errno));
- }
- log_fn(LOG_NOTICE, "Successfully opened LogFile '%s', redirecting output.",
- file_opt->value);
- } else if (!isDaemon) {
- add_stream_log(levelMin, levelMax, "<stderr>", stderr);
- }
- }
- /**
- * Initialize the logs based on the configuration file.
- */
- void config_init_logs(or_options_t *options)
- {
- /* The order of options is: Level? (File Level?)+
- */
- struct config_line_t *opt = options->LogOptions;
- /* Special case for if first option is LogLevel. */
- if (opt && !strcasecmp(opt->key, "LogLevel")) {
- if (opt->next && !strcasecmp(opt->next->key, "LogFile")) {
- add_single_log(opt, opt->next, options->RunAsDaemon);
- opt = opt->next->next;
- } else if (!opt->next) {
- add_single_log(opt, NULL, options->RunAsDaemon);
- return;
- } else {
- opt = opt->next;
- }
- }
- while (opt) {
- if (!strcasecmp(opt->key, "LogLevel")) {
- log_fn(LOG_WARN, "Two LogLevel options in a row without intervening LogFile");
- opt = opt->next;
- } else {
- assert(!strcasecmp(opt->key, "LogFile"));
- if (opt->next && !strcasecmp(opt->next->key, "LogLevel")) {
- /* LogFile followed by LogLevel */
- add_single_log(opt->next, opt, options->RunAsDaemon);
- opt = opt->next->next;
- } else {
- /* LogFile followed by LogFile or end of list. */
- add_single_log(NULL, opt, options->RunAsDaemon);
- opt = opt->next;
- }
- }
- }
- if (options->DebugLogFile) {
- log_fn(LOG_WARN, "DebugLogFile is deprecated; use LogFile and LogLevel instead");
- add_file_log(LOG_DEBUG, LOG_ERR, options->DebugLogFile);
- }
- }
- /*
- Local Variables:
- mode:c
- indent-tabs-mode:nil
- c-basic-offset:2
- End:
- */
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