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Make sure orconn->chan gets nulled out when channels exit from channel_free_all() too

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This commit is contained in:
Andrea Shepard 2014-02-08 14:05:51 -08:00
parent 707c1e2e26
commit c330d63ff7
1 changed files with 26 additions and 0 deletions
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26
src/or/channeltls.c
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@ -53,6 +53,7 @@ static void channel_tls_common_init(channel_tls_t *tlschan);
static void channel_tls_close_method(channel_t *chan);
static const char * channel_tls_describe_transport_method(channel_t *chan);
static void channel_tls_free_method(channel_t *chan);
static int
channel_tls_get_remote_addr_method(channel_t *chan, tor_addr_t *addr_out);
static const char *
@ -112,6 +113,7 @@ channel_tls_common_init(channel_tls_t *tlschan)
chan->state = CHANNEL_STATE_OPENING;
chan->close = channel_tls_close_method;
chan->describe_transport = channel_tls_describe_transport_method;
chan->free = channel_tls_free_method;
chan->get_remote_addr = channel_tls_get_remote_addr_method;
chan->get_remote_descr = channel_tls_get_remote_descr_method;
chan->has_queued_writes = channel_tls_has_queued_writes_method;
@ -383,6 +385,30 @@ channel_tls_describe_transport_method(channel_t *chan)
return rv;
}
/**
* Free a channel_tls_t
*
* This is called by the generic channel layer when freeing a channel_tls_t;
* this happens either on a channel which has already reached
* CHANNEL_STATE_CLOSED or CHANNEL_STATE_ERROR from channel_run_cleanup() or
* on shutdown from channel_free_all(). In the latter case we might still
* have an orconn active (which connection_free_all() will get to later),
* so we should null out its channel pointer now.
*/
static void
channel_tls_free_method(channel_t *chan)
{
channel_tls_t *tlschan = BASE_CHAN_TO_TLS(chan);
tor_assert(tlschan);
if (tlschan->conn) {
tlschan->conn->chan = NULL;
tlschan->conn = NULL;
}
}
/**
* Get the remote address of a channel_tls_t
*