Expose the chan_pjsip implementation pvt and session in a defined manner.

This allows modules outside of chan_pjsip itself to get the session given
only an Asterisk channel.

Review: https://reviewboard.asterisk.org/r/2674/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@395102 65c4cc65-6c06-0410-ace0-fbb531ad65f3

2 files changed, 26 insertions, 0 deletions

diff --git a/res/res_sip_session.c b/res/res_sip_session.c
index 8532a5a09..7028e0d06 100644
--- a/res/res_sip_session.c
+++ b/res/res_sip_session.c
@@ -901,6 +901,31 @@ static int add_session_media(void *obj, void *arg, int flags)
 	return 0;
 }
 
+/*! \brief Destructor for SIP channel */
+static void sip_channel_destroy(void *obj)
+{
+	struct ast_sip_channel_pvt *channel = obj;
+
+	ao2_cleanup(channel->pvt);
+	ao2_cleanup(channel->session);
+}
+
+struct ast_sip_channel_pvt *ast_sip_channel_pvt_alloc(void *pvt, struct ast_sip_session *session)
+{
+	struct ast_sip_channel_pvt *channel = ao2_alloc(sizeof(*channel), sip_channel_destroy);
+
+	if (!channel) {
+		return NULL;
+	}
+
+	ao2_ref(pvt, +1);
+	channel->pvt = pvt;
+	ao2_ref(session, +1);
+	channel->session = session;
+
+	return channel;
+}
+
 struct ast_sip_session *ast_sip_session_alloc(struct ast_sip_endpoint *endpoint, pjsip_inv_session *inv_session)
 {
 	RAII_VAR(struct ast_sip_session *, session, ao2_alloc(sizeof(*session), session_destructor), ao2_cleanup);
diff --git a/res/res_sip_session.exports.in b/res/res_sip_session.exports.in
index 28ed0b239..a7afb1c30 100644
--- a/res/res_sip_session.exports.in
+++ b/res/res_sip_session.exports.in
@@ -16,6 +16,7 @@
 		LINKER_SYMBOL_PREFIXast_sip_session_create_invite;
 		LINKER_SYMBOL_PREFIXast_sip_session_create_outgoing;
 		LINKER_SYMBOL_PREFIXast_sip_dialog_get_session;
+		LINKER_SYMBOL_PREFIXast_sip_channel_pvt_alloc;
 	local:
 		*;
 };