Commit 4d70e725 authored by Nick Mathewson's avatar Nick Mathewson
Browse files

Do not try to shut down the event loop when it is not initialized.

Doing so caused us to crash in some unusual circumstances, such as
using --verify-config to verify a configuration that failed during
the options_act() stage.

Fixes bug 32407; bugfix on
parent 1bde356b
o Minor bugfixes (crash):
- When running Tor with an option like --verify-config or --dump-config
that does not start the event loop, avoid crashing if we try to exit
early because of an error. Fixes bug 32407; bugfix on
......@@ -774,6 +774,10 @@ tor_shutdown_event_loop_and_exit(int exitcode)
main_loop_should_exit = 1;
main_loop_exit_value = exitcode;
if (! tor_libevent_is_initialized()) {
return; /* No event loop to shut down. */
/* Die with an assertion failure in ten seconds, if for some reason we don't
* exit normally. */
/* XXXX We should consider this code if it's never used. */
......@@ -181,6 +181,16 @@ tor_libevent_initialize(tor_libevent_cfg *torcfg)
event_get_version(), tor_libevent_get_method());
* Return true iff the libevent module has been successfully initialized,
* and not subsequently shut down.
return the_event_base != NULL;
/** Return the current Libevent event base that we're set up to use. */
MOCK_IMPL(struct event_base *,
tor_libevent_get_base, (void))
......@@ -13,6 +13,8 @@
#include "lib/testsupport/testsupport.h"
#include "lib/malloc/malloc.h"
#include <stdbool.h>
void configure_libevent_logging(void);
void suppress_libevent_log_msg(const char *msg);
......@@ -68,6 +70,7 @@ typedef struct tor_libevent_cfg {
} tor_libevent_cfg;
void tor_libevent_initialize(tor_libevent_cfg *cfg);
bool tor_libevent_is_initialized(void);
MOCK_DECL(struct event_base *, tor_libevent_get_base, (void));
const char *tor_libevent_get_method(void);
void tor_check_libevent_header_compatibility(void);
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