mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-09-21 21:44:58 +02:00
Separate validate from activate. Document undocumented stuff in config.c.
svn:r2711
This commit is contained in:
Nick Mathewson
parent
8b9d7da59f
commit
cb5de85585
141
src/or/config.c
141
src/or/config.c
@ -164,7 +164,7 @@ static int options_validate(or_options_t *options);
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static int options_transition_allowed(or_options_t *old, or_options_t *new);
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static int check_nickname_list(const char *lst, const char *name);
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static int parse_dir_server_line(const char *line);
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static int parse_dir_server_line(const char *line, int validate_only);
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static int parse_redirect_line(or_options_t *options,
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struct config_line_t *line);
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static int parse_log_severity_range(const char *range, int *min_out,
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@ -184,12 +184,46 @@ static int normalize_log_options(or_options_t *options);
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/** Command-line and config-file options. */
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static or_options_t *global_options=NULL;
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or_options_t *get_options(void) {
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/** Return the currently configured options. */
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or_options_t *
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get_options(void) {
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tor_assert(global_options);
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return global_options;
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}
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void set_options(or_options_t *new) {
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global_options = new;
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/** Change the current global options tocontain <b>new</b> instead of
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* their current value; free the old value as necessary. Where
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* <b>new</b> is different from the old value, update the process to
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* use the new value instead.
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*
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* Note 1: <b>new_val</b> must have previously been validated with
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* options_validate(), or Tor may freak out and exit.
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*
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* Note 2: We haven't moved all the "act on new configuration" logic
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* here yet. Some is still in do_hup() and other places.
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*/
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void
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set_options(or_options_t *new_val) {
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struct config_line_t *cl;
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if (global_options)
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options_free(global_options);
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global_options = new_val;
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clear_trusted_dir_servers();
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for (cl = new_val->DirServers; cl; cl = cl->next) {
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if (parse_dir_server_line(cl->value, 0)<0) {
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log_fn(LOG_ERR,
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"Previously validated DirServer line could not be added!");
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tor_assert(0);
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}
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}
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if (rend_config_services(new_val, 0)<0) {
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log_fn(LOG_ERR,
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"Previously validated hidden services line could not be added!");
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tor_assert(0);
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}
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}
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/*
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@ -578,10 +612,7 @@ config_trial_assign(or_options_t **options, struct config_line_t *list, int rese
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return -3;
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}
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/* XXX now act on options */
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options_free(*options);
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*options = trial_options;
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set_options(trial_options);
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return 0;
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}
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@ -632,18 +663,20 @@ option_reset(or_options_t *options, config_var_t *var)
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}
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}
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/** Set <b>options</b>->DirServers to contain the default directory
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* servers. */
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static void
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add_default_trusted_dirservers(void)
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add_default_trusted_dirservers(or_options_t *options)
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{
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/* moria1 */
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parse_dir_server_line("18.244.0.188:9031 "
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"FFCB 46DB 1339 DA84 674C 70D7 CB58 6434 C437 0441");
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options->DirServers = config_line_prepend(options->DirServers, "DirServer",
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"18.244.0.188:9031 FFCB 46DB 1339 DA84 674C 70D7 CB58 6434 C437 0441");
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/* moria2 */
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parse_dir_server_line("18.244.0.114:80 "
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"719B E45D E224 B607 C537 07D0 E214 3E2D 423E 74CF");
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options->DirServers = config_line_prepend(options->DirServers, "DirServer",
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"18.244.0.114:80 719B E45D E224 B607 C537 07D0 E214 3E2D 423E 74CF");
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/* tor26 */
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parse_dir_server_line("62.116.124.106:9030 "
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"847B 1F85 0344 D787 6491 A548 92F9 0493 4E4E B85D");
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options->DirServers = config_line_prepend(options->DirServers, "DirServer",
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"62.116.124.106:9030 847B 1F85 0344 D787 6491 A548 92F9 0493 4E4E B85D");
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}
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/** Print a usage message for tor. */
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@ -719,6 +752,8 @@ resolve_my_address(const char *address, uint32_t *addr)
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return 0;
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}
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/** Called when we don't have a nickname set. Try to guess a good
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* nickname based on the hostname, and return it. */
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static char *
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get_default_nickname(void)
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{
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@ -840,6 +875,9 @@ options_init(or_options_t *options)
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}
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}
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/** Return 0 if every setting in <b>options</b> is reasonable. Else
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* warn and return -1. Should have no side effects, except for
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* normalizing the contents of <b>options</b>. */
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static int
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options_validate(or_options_t *options)
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{
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@ -875,6 +913,14 @@ options_validate(or_options_t *options)
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}
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}
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if (normalize_log_options(options))
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return -1;
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/* Special case if no options are given. */
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if (!options->Logs) {
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options->Logs = config_line_prepend(NULL, "Log", "notice-err stdout");
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}
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if (server_mode(options)) {
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/* confirm that our address isn't broken, so we can complain now */
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uint32_t tmp;
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@ -1044,17 +1090,18 @@ options_validate(or_options_t *options)
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result = -1;
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}
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/* XXX bug: this parsing shouldn't have side effects */
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clear_trusted_dir_servers();
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if (!options->DirServers) {
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add_default_trusted_dirservers();
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add_default_trusted_dirservers(options);
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} else {
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for (cl = options->DirServers; cl; cl = cl->next) {
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if (parse_dir_server_line(cl->value)<0)
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if (parse_dir_server_line(cl->value, 1)<0)
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result = -1;
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}
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}
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if (rend_config_services(options, 1) < 0)
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result = -1;
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return result;
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}
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@ -1085,6 +1132,8 @@ options_transition_allowed(or_options_t *old, or_options_t *new) {
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}
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#ifdef MS_WINDOWS
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/** Return the directory on windows where we expect to find our application
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* data. */
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static char *get_windows_conf_root(void)
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{
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static int is_set = 0;
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@ -1124,6 +1173,7 @@ static char *get_windows_conf_root(void)
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}
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#endif
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/** Return the default location for our torrc file. */
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static char *
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get_default_conf_file(void)
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{
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@ -1278,12 +1328,6 @@ getconfig(int argc, char **argv)
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if (options_transition_allowed(oldoptions, newoptions) < 0)
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goto err;
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/* XXX now act on options */
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if (rend_config_services(newoptions) < 0)
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goto err;
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if(oldoptions)
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options_free(oldoptions);
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set_options(newoptions);
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return 0;
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err:
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@ -1291,6 +1335,12 @@ getconfig(int argc, char **argv)
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return -1;
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}
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/** If <b>range</b> is of the form MIN-MAX, for MIN and MAX both
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* recognized log severity levels, set *<b>min_out</b> to MIN and
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* *<b>max_out</b> to MAX and return 0. Else, if <b>range<b> is of
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* the form MIN, act as if MIN-err had been specified. Else, warn and
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* return -1.
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*/
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static int
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parse_log_severity_range(const char *range, int *min_out, int *max_out)
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{
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@ -1337,6 +1387,9 @@ parse_log_severity_range(const char *range, int *min_out, int *max_out)
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return 0;
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}
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/** Try to convert a pair of old-style logging options [LogLevel, and
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* (LogFile/Syslog)] to a new-style option, and add the new option to
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* options->Logs. */
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static int
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convert_log_option(or_options_t *options, struct config_line_t *level_opt,
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struct config_line_t *file_opt, int isDaemon)
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@ -1380,13 +1433,6 @@ config_init_logs(or_options_t *options)
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struct config_line_t *opt;
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int ok;
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smartlist_t *elts;
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if (normalize_log_options(options))
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return -1;
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/* Special case if no options are given. */
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if (!options->Logs) {
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options->Logs = config_line_prepend(NULL, "Log", "notice-err stdout");
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}
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ok = 1;
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elts = smartlist_create();
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@ -1440,6 +1486,7 @@ config_init_logs(or_options_t *options)
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return ok?0:-1;
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}
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/** Add a single option of the form Log min-max <type> [fname] to options. */
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static int
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add_single_log_option(or_options_t *options, int minSeverity, int maxSeverity,
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const char *type, const char *fname)
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@ -1461,6 +1508,8 @@ add_single_log_option(or_options_t *options, int minSeverity, int maxSeverity,
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return 0;
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}
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/** Convert all old-style logging options to new-style Log options. Return 0
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* on success, -1 on faulure. */
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static int
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normalize_log_options(or_options_t *options)
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{
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@ -1555,7 +1604,9 @@ config_parse_exit_policy(struct config_line_t *cfg,
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smartlist_free(entries);
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}
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void exit_policy_free(struct exit_policy_t *p) {
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/** Release all storage held by <b>p</b> */
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void
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exit_policy_free(struct exit_policy_t *p) {
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struct exit_policy_t *e;
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while (p) {
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@ -1566,8 +1617,11 @@ void exit_policy_free(struct exit_policy_t *p) {
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}
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}
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static int parse_redirect_line(or_options_t *options,
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struct config_line_t *line)
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/** Parse a single RedirectExit line's contents from <b>line</b>. If they are
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* valid, add an element to <b>options</b>->RedirectExitList and return 0.
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* Else return -1. */
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static int
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parse_redirect_line(or_options_t *options, struct config_line_t *line)
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{
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smartlist_t *elements = NULL;
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exit_redirect_t *r;
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@ -1614,7 +1668,12 @@ static int parse_redirect_line(or_options_t *options,
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}
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}
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static int parse_dir_server_line(const char *line)
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/** Read the contents of a DirServer line from <b>line</b>. Return 0
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* if the line is well-formed, and 0 if it isn't. If
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* <b>validate_only</b> is 0, and the line is well-formed, then add
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* the dirserver desribed in the line as a valid server. */
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static int
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parse_dir_server_line(const char *line, int validate_only)
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{
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smartlist_t *items = NULL;
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int r;
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@ -1650,9 +1709,11 @@ static int parse_dir_server_line(const char *line)
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goto err;
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}
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log_fn(LOG_DEBUG, "Trusted dirserver at %s:%d (%s)", address, (int)port,
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(char*)smartlist_get(items,1));
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add_trusted_dir_server(address, port, digest);
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if (!validate_only) {
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log_fn(LOG_DEBUG, "Trusted dirserver at %s:%d (%s)", address, (int)port,
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(char*)smartlist_get(items,1));
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add_trusted_dir_server(address, port, digest);
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}
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r = 0;
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goto done;
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@ -1667,6 +1728,8 @@ static int parse_dir_server_line(const char *line)
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return r;
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}
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/** Return the place where we are currently configured to store and read all
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* of our persistant data. */
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const char *
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get_data_directory(void)
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{
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@ -1092,7 +1092,7 @@ struct config_line_t {
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};
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or_options_t *get_options(void);
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void set_options(or_options_t *new);
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void set_options(or_options_t *new_val);
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int config_get_lines(char *string, struct config_line_t **result);
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void config_free_lines(struct config_line_t *front);
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@ -1462,7 +1462,7 @@ int rend_cache_store(const char *desc, size_t desc_len);
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/********************************* rendservice.c ***************************/
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int rend_config_services(or_options_t *options);
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int rend_config_services(or_options_t *options, int validate_only);
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int rend_service_load_keys(void);
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void rend_services_init(void);
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void rend_services_introduce(void);
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@ -178,19 +178,27 @@ static rend_service_port_config_t *parse_port_config(const char *string)
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/** Set up rend_service_list, based on the values of HiddenServiceDir and
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* HiddenServicePort in <b>options</b>. Return 0 on success and -1 on
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* failure.
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* failure. (If <b>validate_only</b> is set, parse, warn and return as
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* normal, but don't actually change the configured services.)
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*/
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int rend_config_services(or_options_t *options)
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int rend_config_services(or_options_t *options, int validate_only)
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{
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struct config_line_t *line;
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rend_service_t *service = NULL;
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rend_service_port_config_t *portcfg;
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rend_service_free_all();
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if (!validate_only)
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rend_service_free_all();
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for (line = options->RendConfigLines; line; line = line->next) {
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if (!strcasecmp(line->key, "HiddenServiceDir")) {
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if (service)
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add_service(service);
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if (service) {
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if (validate_only)
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rend_service_free(service);
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else
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add_service(service);
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}
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service = tor_malloc_zero(sizeof(rend_service_t));
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service->directory = tor_strdup(line->value);
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service->ports = smartlist_create();
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@ -225,8 +233,12 @@ int rend_config_services(or_options_t *options)
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service->intro_exclude_nodes = tor_strdup(line->value);
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}
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}
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if (service)
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add_service(service);
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if (service) {
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if (validate_only)
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rend_service_free(service);
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else
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add_service(service);
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}
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return 0;
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}
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