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Log state transitions for Pluggable Transports
This patch makes Tor log state transitions within the PT layer at the info log-level. This should make it easier to figure out if Tor ends up in a strange state. See: tpo/core/tor#33669
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@ -541,7 +541,7 @@ proxy_prepare_for_restart(managed_proxy_t *mp)
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mp->proxy_supported = 0;
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/* flag it as an infant proxy so that it gets launched on next tick */
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mp->conf_state = PT_PROTO_INFANT;
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managed_proxy_set_state(mp, PT_PROTO_INFANT);
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unconfigured_proxies_n++;
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}
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@ -578,7 +578,7 @@ launch_managed_proxy(managed_proxy_t *mp)
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log_info(LD_CONFIG,
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"Managed proxy at '%s' has spawned with PID '%" PRIu64 "'.",
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mp->argv[0], process_get_pid(mp->process));
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mp->conf_state = PT_PROTO_LAUNCHED;
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managed_proxy_set_state(mp, PT_PROTO_LAUNCHED);
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return 0;
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}
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@ -648,7 +648,7 @@ configure_proxy(managed_proxy_t *mp)
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/* if we haven't launched the proxy yet, do it now */
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if (mp->conf_state == PT_PROTO_INFANT) {
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if (launch_managed_proxy(mp) < 0) { /* launch fail */
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mp->conf_state = PT_PROTO_FAILED_LAUNCH;
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managed_proxy_set_state(mp, PT_PROTO_FAILED_LAUNCH);
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handle_finished_proxy(mp);
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}
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return 0;
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@ -810,8 +810,12 @@ handle_finished_proxy(managed_proxy_t *mp)
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managed_proxy_destroy(mp, 1); /* annihilate it. */
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break;
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}
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register_proxy(mp); /* register its transports */
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mp->conf_state = PT_PROTO_COMPLETED; /* and mark it as completed. */
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/* register its transports */
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register_proxy(mp);
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/* and mark it as completed. */
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managed_proxy_set_state(mp, PT_PROTO_COMPLETED);
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break;
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case PT_PROTO_INFANT:
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case PT_PROTO_LAUNCHED:
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@ -881,7 +885,7 @@ handle_proxy_line(const char *line, managed_proxy_t *mp)
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goto err;
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tor_assert(mp->conf_protocol != 0);
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mp->conf_state = PT_PROTO_ACCEPTING_METHODS;
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managed_proxy_set_state(mp, PT_PROTO_ACCEPTING_METHODS);
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return;
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} else if (!strcmpstart(line, PROTO_CMETHODS_DONE)) {
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if (mp->conf_state != PT_PROTO_ACCEPTING_METHODS)
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@ -889,7 +893,7 @@ handle_proxy_line(const char *line, managed_proxy_t *mp)
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handle_methods_done(mp);
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mp->conf_state = PT_PROTO_CONFIGURED;
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managed_proxy_set_state(mp, PT_PROTO_CONFIGURED);
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return;
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} else if (!strcmpstart(line, PROTO_SMETHODS_DONE)) {
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if (mp->conf_state != PT_PROTO_ACCEPTING_METHODS)
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@ -897,7 +901,7 @@ handle_proxy_line(const char *line, managed_proxy_t *mp)
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handle_methods_done(mp);
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mp->conf_state = PT_PROTO_CONFIGURED;
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managed_proxy_set_state(mp, PT_PROTO_CONFIGURED);
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return;
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} else if (!strcmpstart(line, PROTO_CMETHOD_ERROR)) {
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if (mp->conf_state != PT_PROTO_ACCEPTING_METHODS)
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@ -960,7 +964,7 @@ handle_proxy_line(const char *line, managed_proxy_t *mp)
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return;
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err:
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mp->conf_state = PT_PROTO_BROKEN;
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managed_proxy_set_state(mp, PT_PROTO_BROKEN);
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log_warn(LD_CONFIG, "Managed proxy at '%s' failed the configuration protocol"
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" and will be destroyed.", mp->argv[0]);
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}
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@ -1521,7 +1525,7 @@ managed_proxy_create(const smartlist_t *with_transport_list,
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char **proxy_argv, int is_server)
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{
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managed_proxy_t *mp = tor_malloc_zero(sizeof(managed_proxy_t));
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mp->conf_state = PT_PROTO_INFANT;
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managed_proxy_set_state(mp, PT_PROTO_INFANT);
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mp->is_server = is_server;
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mp->argv = proxy_argv;
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mp->transports = smartlist_new();
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@ -2015,3 +2019,45 @@ managed_proxy_outbound_address(const or_options_t *options, sa_family_t family)
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/* The user have not specified a preference for outgoing connections. */
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return NULL;
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}
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STATIC const char *
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managed_proxy_state_to_string(enum pt_proto_state state)
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{
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switch (state) {
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case PT_PROTO_INFANT:
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return "Infant";
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case PT_PROTO_LAUNCHED:
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return "Launched";
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case PT_PROTO_ACCEPTING_METHODS:
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return "Accepting methods";
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case PT_PROTO_CONFIGURED:
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return "Configured";
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case PT_PROTO_COMPLETED:
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return "Completed";
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case PT_PROTO_BROKEN:
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return "Broken";
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case PT_PROTO_FAILED_LAUNCH:
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return "Failed to launch";
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}
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/* LCOV_EXCL_START */
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tor_assert_unreached();
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return NULL;
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/* LCOV_EXCL_STOP */
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}
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/** Set the internal state of the given <b>mp</b> to the given <b>new_state</b>
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* value. */
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STATIC void
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managed_proxy_set_state(managed_proxy_t *mp, enum pt_proto_state new_state)
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{
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if (mp->conf_state == new_state)
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return;
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tor_log(LOG_INFO, LD_PT, "Managed proxy \"%s\" changed state: %s -> %s",
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mp->argv[0],
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managed_proxy_state_to_string(mp->conf_state),
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managed_proxy_state_to_string(new_state));
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mp->conf_state = new_state;
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}
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@ -153,6 +153,8 @@ STATIC int managed_proxy_severity_parse(const char *);
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STATIC const tor_addr_t *managed_proxy_outbound_address(const or_options_t *,
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sa_family_t);
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STATIC const char *managed_proxy_state_to_string(enum pt_proto_state);
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STATIC void managed_proxy_set_state(managed_proxy_t *, enum pt_proto_state);
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#endif /* defined(PT_PRIVATE) */
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#endif /* !defined(TOR_TRANSPORTS_H) */
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