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Fix some XXXXs in connection_add_impl related to bufferevent error checking

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This might make bufferevents more asserty for a while, but they should
make other bugs less likely to go unnoticed.

Noted by Sebastian.
This commit is contained in:
Nick Mathewson 2010-10-13 20:37:04 -04:00
parent 3d10c89201
commit 3af12a5557
1 changed files with 19 additions and 17 deletions
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36
src/or/main.c
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@ -161,7 +161,7 @@ int can_complete_circuit=0;
*
****************************************************************************/
#ifdef USE_BUFFEREVENTS
#if 0 && defined(USE_BUFFEREVENTS)
static void
free_old_inbuf(connection_t *conn)
{
@ -211,7 +211,12 @@ connection_add_impl(connection_t *conn, int is_connecting)
tor_libevent_get_base(),
conn->s,
BEV_OPT_DEFER_CALLBACKS);
/* XXXX CHECK FOR NULL RETURN! */
if (!conn->bufev) {
log_warn(LD_BUG, "Unable to create socket bufferevent");
smartlist_del(connection_array, conn->conn_array_index);
conn->conn_array_index = -1;
return -1;
}
if (is_connecting) {
/* Put the bufferevent into a "connecting" state so that we'll get
* a "connected" event callback on successful write. */
@ -223,10 +228,14 @@ connection_add_impl(connection_t *conn, int is_connecting)
tor_assert(conn->s < 0);
if (!conn->bufev) {
struct bufferevent *pair[2] = { NULL, NULL };
/* XXXX CHECK FOR ERROR RETURN! */
bufferevent_pair_new(tor_libevent_get_base(),
BEV_OPT_DEFER_CALLBACKS,
pair);
if (bufferevent_pair_new(tor_libevent_get_base(),
BEV_OPT_DEFER_CALLBACKS,
pair) < 0) {
log_warn(LD_BUG, "Unable to create bufferevent pair");
smartlist_del(connection_array, conn->conn_array_index);
conn->conn_array_index = -1;
return -1;
}
tor_assert(pair[0]);
conn->bufev = pair[0];
conn->linked_conn->bufev = pair[1];
@ -236,18 +245,11 @@ connection_add_impl(connection_t *conn, int is_connecting)
tor_assert(!conn->linked);
}
if (conn->bufev && conn->inbuf) {
/* XXX Instead we should assert that there is no inbuf, once we
* have linked connections using bufferevents. */
free_old_inbuf(conn);
}
if (conn->bufev)
tor_assert(conn->inbuf == NULL);
if (conn->linked_conn && conn->linked_conn->bufev &&
conn->linked_conn->inbuf) {
/* XXX Instead we should assert that there is no inbuf, once we
* have linked connections using bufferevents. */
free_old_inbuf(conn->linked_conn);
}
if (conn->linked_conn && conn->linked_conn->bufev)
tor_assert(conn->linked_conn->inbuf == NULL);
}
#else
(void) is_connecting;