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relay: Don't flag that we published if descriptor build fails

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In case building the descriptor would fail, we could still flag that we did in
fact publish the descriptors leading to no more attempt at publishing it which
in turn makes the relay silent for some hours and not try to rebuild the
descriptor later.

This has been spotted with #40231 because the operator used a localhost
address for the ORPort and "AssumeReachable 1" leading to this code path where
the descriptor failed to build but all conditions to "can I publish" were met.

Related to #40231

Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
David Goulet 2021-01-14 09:42:56 -05:00
parent e5a0c739d4
commit 743a5ef2b3
3 changed files with 11 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/feature/relay/relay_periodic.c
View File

@ -104,7 +104,7 @@ rotate_onion_key_callback(time_t now, const or_options_t *options)
log_info(LD_GENERAL,"Rotating onion key."); log_info(LD_GENERAL,"Rotating onion key.");
rotate_onion_key(); rotate_onion_key();
cpuworkers_rotate_keyinfo(); cpuworkers_rotate_keyinfo();
if (router_rebuild_descriptor(1)<0) { if (!router_rebuild_descriptor(1)) {
log_info(LD_CONFIG, "Couldn't rebuild router descriptor"); log_info(LD_CONFIG, "Couldn't rebuild router descriptor");
} }
if (advertised_server_mode() && !net_is_disabled()) if (advertised_server_mode() && !net_is_disabled())

18
src/feature/relay/router.c
View File

@ -1427,10 +1427,9 @@ consider_publishable_server(int force)
return; return;
rebuilt = router_rebuild_descriptor(0); rebuilt = router_rebuild_descriptor(0);
if (decide_if_publishable_server()) { if (rebuilt && decide_if_publishable_server()) {
set_server_advertised(1); set_server_advertised(1);
if (rebuilt == 0) router_upload_dir_desc_to_dirservers(force);
router_upload_dir_desc_to_dirservers(force);
} else { } else {
set_server_advertised(0); set_server_advertised(0);
} }
@ -1817,7 +1816,7 @@ router_get_my_extrainfo(void)
{ {
if (!server_mode(get_options())) if (!server_mode(get_options()))
return NULL; return NULL;
if (router_rebuild_descriptor(0)) if (!router_rebuild_descriptor(0))
return NULL; return NULL;
return desc_extrainfo; return desc_extrainfo;
} }
@ -2414,9 +2413,10 @@ router_build_fresh_descriptor(routerinfo_t **r, extrainfo_t **e)
/** If <b>force</b> is true, or our descriptor is out-of-date, rebuild a fresh /** If <b>force</b> is true, or our descriptor is out-of-date, rebuild a fresh
* routerinfo, signed server descriptor, and extra-info document for this OR. * routerinfo, signed server descriptor, and extra-info document for this OR.
* Return 0 on success, -1 on temporary error. *
* Return true on success, else false on temporary error.
*/ */
int bool
router_rebuild_descriptor(int force) router_rebuild_descriptor(int force)
{ {
int err = 0; int err = 0;
@ -2424,13 +2424,13 @@ router_rebuild_descriptor(int force)
extrainfo_t *ei; extrainfo_t *ei;
if (desc_clean_since && !force) if (desc_clean_since && !force)
return 0; return true;
log_info(LD_OR, "Rebuilding relay descriptor%s", force ? " (forced)" : ""); log_info(LD_OR, "Rebuilding relay descriptor%s", force ? " (forced)" : "");
err = router_build_fresh_descriptor(&ri, &ei); err = router_build_fresh_descriptor(&ri, &ei);
if (err < 0) { if (err < 0) {
return err; return false;
} }
routerinfo_free(desc_routerinfo); routerinfo_free(desc_routerinfo);
@ -2446,7 +2446,7 @@ router_rebuild_descriptor(int force)
} }
desc_dirty_reason = NULL; desc_dirty_reason = NULL;
control_event_my_descriptor_changed(); control_event_my_descriptor_changed();
return 0; return true;
} }
/** Called when we have a new set of consensus parameters. */ /** Called when we have a new set of consensus parameters. */

2
src/feature/relay/router.h
View File

@ -102,7 +102,7 @@ int router_extrainfo_digest_is_me(const char *digest);
int router_is_me(const routerinfo_t *router); int router_is_me(const routerinfo_t *router);
bool router_addr_is_my_published_addr(const tor_addr_t *addr); bool router_addr_is_my_published_addr(const tor_addr_t *addr);
int router_build_fresh_descriptor(routerinfo_t **r, extrainfo_t **e); int router_build_fresh_descriptor(routerinfo_t **r, extrainfo_t **e);
int router_rebuild_descriptor(int force); bool router_rebuild_descriptor(int force);
char *router_dump_router_to_string(routerinfo_t *router, char *router_dump_router_to_string(routerinfo_t *router,
const crypto_pk_t *ident_key, const crypto_pk_t *ident_key,
const crypto_pk_t *tap_key, const crypto_pk_t *tap_key,