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-rw-r--r--channels/chan_local.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/channels/chan_local.c b/channels/chan_local.c
index 95adfcab7..d1f66f8dd 100644
--- a/channels/chan_local.c
+++ b/channels/chan_local.c
@@ -94,6 +94,7 @@ static int local_sendhtml(struct ast_channel *ast, int subclass, const char *dat
static int local_sendtext(struct ast_channel *ast, const char *text);
static int local_devicestate(void *data);
static struct ast_channel *local_bridgedchannel(struct ast_channel *chan, struct ast_channel *bridge);
+static int local_queryoption(struct ast_channel *ast, int option, void *data, int *datalen);
/* PBX interface structure for channel registration */
static const struct ast_channel_tech local_tech = {
@@ -116,6 +117,7 @@ static const struct ast_channel_tech local_tech = {
.send_text = local_sendtext,
.devicestate = local_devicestate,
.bridged_channel = local_bridgedchannel,
+ .queryoption = local_queryoption,
};
/*! \brief the local pvt structure for all channels
@@ -228,6 +230,58 @@ static struct ast_channel *local_bridgedchannel(struct ast_channel *chan, struct
return bridged;
}
+static int local_queryoption(struct ast_channel *ast, int option, void *data, int *datalen)
+{
+ struct local_pvt *p = ast->tech_pvt;
+ struct ast_channel *chan, *bridged;
+ int res;
+
+ if (!p) {
+ return -1;
+ }
+
+ if (option != AST_OPTION_T38_STATE) {
+ /* AST_OPTION_T38_STATE is the only supported option at this time */
+ return -1;
+ }
+
+ ast_mutex_lock(&p->lock);
+ chan = IS_OUTBOUND(ast, p) ? p->owner : p->chan;
+
+try_again:
+ if (!chan) {
+ ast_mutex_unlock(&p->lock);
+ return -1;
+ }
+
+ if (ast_channel_trylock(chan)) {
+ DEADLOCK_AVOIDANCE(&p->lock);
+ chan = IS_OUTBOUND(ast, p) ? p->owner : p->chan;
+ goto try_again;
+ }
+
+ bridged = ast_bridged_channel(chan);
+ if (!bridged) {
+ /* can't query channel unless we are bridged */
+ ast_mutex_unlock(&p->lock);
+ ast_channel_unlock(chan);
+ return -1;
+ }
+
+ if (ast_channel_trylock(bridged)) {
+ ast_channel_unlock(chan);
+ DEADLOCK_AVOIDANCE(&p->lock);
+ chan = IS_OUTBOUND(ast, p) ? p->owner : p->chan;
+ goto try_again;
+ }
+
+ res = ast_channel_queryoption(bridged, option, data, datalen, 0);
+ ast_mutex_unlock(&p->lock);
+ ast_channel_unlock(chan);
+ ast_channel_unlock(bridged);
+ return res;
+}
+
static int local_queue_frame(struct local_pvt *p, int isoutbound, struct ast_frame *f,
struct ast_channel *us, int us_locked)
{