siprec: expose streams in xml

Close #3287 and #3293

(cherry picked from commit fb4402d)

modules/media_exchange/media_utils.c

@@ -235,7 +235,7 @@ int media_fork_offer(struct media_session_leg *msl,
 {
 	if (media_rtp.copy_offer(msl->ms->rtp,
 			&media_exchange_name, NULL, mf->flags,
-			mf->streams, body) < 0) {
+			mf->streams, body, NULL) < 0) {
 		LM_ERR("could not get copy SDP\n");
 		return -1;
 	}
@@ -290,7 +290,7 @@ int media_fork_pause_resume(struct media_session_leg *msl, int medianum, int res
 		flags |= RTP_COPY_MODE_DISABLE;
 
 	if (media_rtp.copy_offer(msl->ms->rtp,
-			&media_exchange_name, NULL, flags, todo, &body) < 0) {
+			&media_exchange_name, NULL, flags, todo, &body, NULL) < 0) {
 		LM_ERR("could not get copy SDP\n");
 		MEDIA_LEG_STATE_SET_UNSAFE(msl, MEDIA_SESSION_STATE_RUNNING);
 		return -1;

modules/rtp_relay/rtp_relay.h

@@ -57,7 +57,8 @@ struct rtp_relay_funcs {
 
 	int (*copy_offer)(struct rtp_relay_session *sess,
 			struct rtp_relay_server *server, void **ctx, str *flags,
-			unsigned int copy_flags, unsigned int streams, str *ret);
+			unsigned int copy_flags, unsigned int streams, str *ret,
+			struct rtp_relay_streams *streams_map);
 	int (*copy_answer)(struct rtp_relay_session *sess,
 			struct rtp_relay_server *server, void *ctx,
 			str *flags, str *body);

modules/rtp_relay/rtp_relay_common.h

@@ -32,5 +32,17 @@
 #define RTP_COPY_LEG_CALLEE (1<<3)
 #define RTP_COPY_LEG_BOTH \
 	(RTP_COPY_LEG_CALLER|RTP_COPY_LEG_CALLEE)
+#define RTP_COPY_MAX_STREAMS 32
+
+struct rtp_relay_stream {
+	int leg;
+	int medianum;
+	int label;
+};
+
+struct rtp_relay_streams {
+	int count;
+	struct rtp_relay_stream streams[RTP_COPY_MAX_STREAMS];
+};
 
 #endif /* _RTP_RELAY_COMMON_H_ */

modules/rtp_relay/rtp_relay_ctx.c

@@ -2701,7 +2701,8 @@ int rtp_relay_api_delete(rtp_ctx _ctx, str *id, unsigned int flags)
 }
 
 int rtp_relay_copy_offer(rtp_ctx _ctx, str *id, str *flags,
-		unsigned int copy_flags, unsigned int streams, str *ret_body)
+		unsigned int copy_flags, unsigned int streams, str *ret_body,
+		struct rtp_relay_streams *ret_streams)
 {
 	int release = 0;
 	struct rtp_relay_session info;
@@ -2742,7 +2743,8 @@ int rtp_relay_copy_offer(rtp_ctx _ctx, str *id, str *flags,
 	info.to_tag = &ctx->to_tag;
 	info.branch = sess->index;
 	if (sess->relay->funcs.copy_offer(&info, &sess->server,
-			&rtp_copy->ctx, flags, copy_flags, streams, ret_body) < 0) {
+			&rtp_copy->ctx, flags, copy_flags, streams, ret_body,
+			ret_streams) < 0) {
 		if (release) {
 			list_del(&rtp_copy->list);
 			shm_free(rtp_copy);

modules/rtp_relay/rtp_relay_load.h

@@ -37,7 +37,8 @@ struct rtp_relay_binds {
 	int (*answer)(rtp_ctx ctx, str *id, unsigned int flags, str *body);
 	int (*delete)(rtp_ctx ctx, str *id, unsigned int flags);
 	int (*copy_offer)(rtp_ctx ctx, str *id, str *flags,
-			unsigned int copy_flags, unsigned int streams, str *ret_body);
+			unsigned int copy_flags, unsigned int streams, str *ret_body,
+			struct rtp_relay_streams *ret_streams);
 	int (*copy_answer)(rtp_ctx ctx, str *id,
 			str *flags, str *body);
 	int (*copy_delete)(rtp_ctx ctx, str *id,
@@ -68,7 +69,8 @@ int rtp_relay_api_offer(rtp_ctx ctx, str *id, unsigned int flags, str *body);
 int rtp_relay_api_answer(rtp_ctx ctx, str *id, unsigned int flags, str *body);
 int rtp_relay_api_delete(rtp_ctx ctx, str *id, unsigned int flags);
 int rtp_relay_copy_offer(rtp_ctx ctx, str *id, str *flags,
-		unsigned int copy_flags, unsigned int streams, str *ret_body);
+		unsigned int copy_flags, unsigned int streams, str *ret_body,
+		struct rtp_relay_streams *ret_streams);
 int rtp_relay_copy_answer(rtp_ctx ctx, str *id,
 		str *flags, str *body);
 int rtp_relay_copy_delete(rtp_ctx ctx, str *id,

modules/rtpengine/rtpengine.c

@@ -298,7 +298,8 @@ static int rtpengine_api_delete(struct rtp_relay_session *sess, struct rtp_relay
 			str *flags, str *extra);
 static int rtpengine_api_copy_offer(struct rtp_relay_session *sess,
 		struct rtp_relay_server *server, void **_ctx, str *flags,
-		unsigned int copy_flags, unsigned int streams, str *body);
+		unsigned int copy_flags, unsigned int streams, str *body,
+		struct rtp_relay_streams *streams_map);
 static int rtpengine_api_copy_answer(struct rtp_relay_session *sess,
 		struct rtp_relay_server *server, void *_ctx, str *flags, str *body);
 static int rtpengine_api_copy_delete(struct rtp_relay_session *sess,
@@ -4401,9 +4402,63 @@ static str *rtpengine_new_subs(str *tag)
 	return to_tag;
 }
 
+static void rtpengine_copy_streams(bencode_item_t *streams, struct rtp_relay_streams *ret)
+{
+	bencode_item_t *item, *medias;
+	str tmp;
+	struct dlg_cell *dlg;
+	int leg = RTP_RELAY_CALLER, medianum, label, s;
+	if (!ret || !streams)
+		return;
+	ret->count = 0;
+	dlg = dlgb.get_dlg();
+	if (!dlg)
+		LM_WARN("could not fetch dialog - legs might not match\n");
+	s = 0;
+	for (item = streams->child; item; item = item->sibling) {
+		if (dlg) {
+			tmp.s = bencode_dictionary_get_string(item, "tag", &tmp.len);
+			if (!tmp.s) {
+				LM_WARN("could not retrieve tag - placing to %s\n",
+						(leg == RTP_RELAY_CALLER?"caller":"callee"));
+			}
+			if (!str_match(&tmp, &dlg->legs[DLG_CALLER_LEG].tag))
+				leg = RTP_RELAY_CALLEE;
+			else
+				leg = RTP_RELAY_CALLER;
+		} else if (leg == RTP_RELAY_CALLER) {
+			/* first try caller, then callee */
+			leg = RTP_RELAY_CALLEE;
+		}
+		medias = bencode_dictionary_get_expect(item, "medias", BENCODE_LIST);
+		if (!medias)
+			continue;
+		for (medias = medias->child; medias; medias = medias->sibling) {
+			s = ret->count;
+			if (s == RTP_COPY_MAX_STREAMS) {
+				LM_WARN("maximum amount of streams %d reached!\n",
+						RTP_COPY_MAX_STREAMS);
+				return;
+			}
+			medianum = bencode_dictionary_get_integer(item, "index", 0);
+			tmp.s = bencode_dictionary_get_string(medias, "label", &tmp.len);
+			if (str2sint(&tmp, &label) < 0) {
+				LM_WARN("invalid label %.*s - not integer - skipping\n",
+						tmp.len, tmp.s);
+				continue;
+			}
+			ret->streams[s].leg = leg;
+			ret->streams[s].label = label;
+			ret->streams[s].medianum = medianum;
+			ret->count++;
+		}
+	}
+}
+
 static int rtpengine_api_copy_offer(struct rtp_relay_session *sess,
 		struct rtp_relay_server *server, void **_ctx, str *flags,
-		unsigned int copy_flags, unsigned int streams, str *ret_body)
+		unsigned int copy_flags, unsigned int streams, str *ret_body,
+		struct rtp_relay_streams *ret_streams)
 {
 	str tmp, *to_tag;
 	bencode_item_t *ret;
@@ -4415,6 +4470,8 @@ static int rtpengine_api_copy_offer(struct rtp_relay_session *sess,
 		LM_ERR("failed to extract sdp body from proxy reply\n");
 	if (!bencode_dictionary_get_str(ret, "to-tag", &tmp))
 		LM_ERR("failed to extract to-tag from proxy reply\n");
+	if (ret_streams)
+		rtpengine_copy_streams(bencode_dictionary_get(ret, "tag-medias"), ret_streams);
 	to_tag = rtpengine_new_subs(&tmp);
 	*_ctx = to_tag;
 	bencode_buffer_free(bencode_item_buffer(ret));

modules/rtpproxy/rtpproxy.c

@@ -188,7 +188,6 @@
 #include "rtpproxy_vcmd.h"
 #include "rtppn_connect.h"
 #include "../rtp_relay/rtp_relay.h"
-
 #define NH_TABLE_VERSION  0
 
 #define DEFAULT_RTPP_SET_ID		0
@@ -322,7 +321,8 @@ static int rtpproxy_api_delete(struct rtp_relay_session *sess, struct rtp_relay_
 			str *flags, str *extra);
 static int rtpproxy_api_copy_offer(struct rtp_relay_session *sess,
 		struct rtp_relay_server *server, void **_ctx, str *flags,
-		unsigned int copy_flags, unsigned int streams, str *body);
+		unsigned int copy_flags, unsigned int streams, str *body,
+		struct rtp_relay_streams *streams_map);
 static int rtpproxy_api_copy_answer(struct rtp_relay_session *sess,
 		struct rtp_relay_server *server, void *_ctx, str *flags, str *body);
 static int rtpproxy_api_copy_delete(struct rtp_relay_session *sess,
@@ -331,6 +331,7 @@ static int rtpproxy_api_copy_serialize(void *_ctx, bin_packet_t *packet);
 static int rtpproxy_api_copy_deserialize(void **_ctx, bin_packet_t *packet);
 static void rtpproxy_api_copy_release(void **_ctx);
 
+
 int connect_rtpproxies(struct rtpp_set *filter);
 int update_rtpp_proxies(struct rtpp_set *filter);
 
@@ -5594,9 +5595,34 @@ static int rtpproxy_gen_sdp_medias(struct rtpproxy_sdp_buf *buf,
 	return 0;
 }
 
+static void rtpproxy_api_copy_fill_streams(
+		struct rtpproxy_copy_ctx *ctx, struct rtp_relay_streams* streams)
+{
+	struct rtpproxy_copy_stream *stream;
+	struct list_head *it;
+	int leg, s;
+	streams->count = 0;
+	for (leg = RTP_RELAY_CALLER; leg <= RTP_RELAY_CALLEE; leg++) {
+		list_for_each(it, &ctx->streams[leg]) {
+			stream = list_entry(it, struct rtpproxy_copy_stream, list);
+			s = streams->count;
+			if (s == RTP_COPY_MAX_STREAMS) {
+				LM_WARN("maximum amount of streams %d reached!\n",
+						RTP_COPY_MAX_STREAMS);
+				return;
+			}
+			streams->streams[s].leg = leg;
+			streams->streams[s].label = stream->index;
+			streams->streams[s].medianum = stream->medianum;
+			streams->count++;
+		}
+	}
+}
+
 static int rtpproxy_api_copy_offer(struct rtp_relay_session *sess,
 		struct rtp_relay_server *server, void **_ctx, str *flags,
-		unsigned int copy_flags, unsigned int streams, str *body)
+		unsigned int copy_flags, unsigned int streams, str *body,
+		struct rtp_relay_streams *streams_map)
 {
 	str *media_ip;
 	struct rtpproxy_sdp_buf *buf;
@@ -5621,6 +5647,9 @@ static int rtpproxy_api_copy_offer(struct rtp_relay_session *sess,
 	if (rtpproxy_gen_sdp_medias(buf, ctx, sess) < 0)
 		goto error;
 
+	if (streams_map)
+		rtpproxy_api_copy_fill_streams(ctx, streams_map);
+
 	*body = buf->buffer;
 	*_ctx = ctx;
 	return 0;

modules/siprec/siprec_body.c

@@ -38,11 +38,34 @@ void srs_free_stream(struct srs_sdp_stream *stream)
 	shm_free(stream);
 }
 
-int srs_add_raw_sdp_stream(int label, int medianum, siprec_uuid *uuid,
+int srs_fill_sdp_stream(int label, int medianum, siprec_uuid *uuid,
 		struct src_sess *sess, struct src_part *part)
 {
+	struct list_head *it;
 	struct srs_sdp_stream *stream = NULL;
 
+	/* first, search for a corresponding stream */
+	list_for_each(it, &part->streams) {
+		stream = list_entry(it, struct srs_sdp_stream, list);
+		/* if we have a uuid, it is possible that we've already
+		 * created it */
+		if (uuid) {
+			if (siprec_cmp_uuid(uuid, &stream->uuid) == 0)
+				break;
+		} else if (stream->medianum == medianum) {
+			/* if not, we might have the same medianum, so we need
+			 * to update it */
+			break;
+		}
+		stream = NULL;
+	}
+	if (stream) {
+		if (uuid)
+			memcpy(stream->uuid, uuid, sizeof *uuid);
+		stream->label = label;
+		return 0;
+	}
+
 	stream = shm_malloc(sizeof *stream);
 	if (!stream) {
 		LM_ERR("cannot allocate memory for new stream!\n");
@@ -52,7 +75,10 @@ int srs_add_raw_sdp_stream(int label, int medianum, siprec_uuid *uuid,
 	stream->label = label;
 	stream->medianum = medianum;
 
-	memcpy(stream->uuid, uuid, sizeof *uuid);
+	if (uuid)
+		memcpy(stream->uuid, uuid, sizeof *uuid);
+	else
+		siprec_build_uuid(stream->uuid);
 	list_add_tail(&stream->list, &part->streams);
 	sess->streams_no++;
 

modules/siprec/siprec_body.h

@@ -51,7 +51,7 @@ struct srs_sdp_stream {
 
 void srs_free_stream(struct srs_sdp_stream *stream);
 
-int srs_add_raw_sdp_stream(int label, int medianum, siprec_uuid *uuid,
+int srs_fill_sdp_stream(int label, int medianum, siprec_uuid *uuid,
 		struct src_sess *sess, struct src_part *part);
 int srs_build_body(struct src_sess *sess, str *sdp, str *body);
 

modules/siprec/siprec_logic.c

@@ -245,6 +245,27 @@ int srec_reply(struct src_sess *ss, int method, int code, str *body)
 	return srec_b2b.send_reply(&reply_data);
 }
 
+static int srec_get_body(struct src_sess *sess, str *body)
+{
+	unsigned int flags = RTP_COPY_MODE_SIPREC|RTP_COPY_LEG_BOTH;
+	struct rtp_relay_streams streams;
+	struct rtp_relay_stream *stream;
+	int s;
+
+	if (srec_rtp.copy_offer(sess->rtp, &mod_name,
+			&sess->media, flags, -1, body, &streams) < 0) {
+		LM_ERR("could not start recording!\n");
+		return -3;
+	}
+	for (s = 0; s < streams.count; s++) {
+		stream = &streams.streams[s];
+		srs_fill_sdp_stream(stream->label, stream->medianum,
+				NULL, sess, &sess->participants[stream->leg]);
+	}
+	return 0;
+}
+
+
 static int srec_b2b_req(struct sip_msg *msg, struct src_sess *ss)
 {
 	str body = str_init("");
@@ -261,8 +282,7 @@ static int srec_b2b_req(struct sip_msg *msg, struct src_sess *ss)
 			code = 488;
 			goto reply;
 		}
-		if (srec_rtp.copy_offer(ss->rtp, &mod_name, &ss->media,
-				RTP_COPY_MODE_SIPREC|RTP_COPY_LEG_BOTH, -1, &body) < 0) {
+		if (srec_get_body(ss, &body) < 0) {
 			LM_ERR("could not refresh recording!\n");
 			goto reply;
 		}
@@ -518,7 +538,6 @@ static int srs_send_invite(struct src_sess *sess)
 /* starts the recording to the srs */
 static int src_start_recording(struct sip_msg *msg, struct src_sess *sess)
 {
-	unsigned int flags = RTP_COPY_MODE_SIPREC|RTP_COPY_LEG_BOTH;
 	union sockaddr_union tmp;
 	int ret;
 	str sdp;
@@ -532,11 +551,11 @@ static int src_start_recording(struct sip_msg *msg, struct src_sess *sess)
 		}
 	}
 
-	if (srec_rtp.copy_offer(sess->rtp, &mod_name,
-			&sess->media, flags, -1, &sdp) < 0) {
+	if (srec_get_body(sess, &sdp) < 0) {
 		LM_ERR("could not start recording!\n");
 		return -3;
 	}
+
 	if (shm_str_dup(&sess->initial_sdp, &sdp) < 0) {
 		pkg_free(sdp.s);
 		srec_rtp.copy_delete(sess->rtp, &mod_name, &sess->media);
@@ -610,8 +629,7 @@ static int src_update_recording(struct sip_msg *msg, struct src_sess *sess)
 	if (sess->flags & SIPREC_PAUSED)
 		flags |= RTP_COPY_MODE_DISABLE;
 
-	if (srec_rtp.copy_offer(sess->rtp, &mod_name,
-			&sess->media, flags, -1, &sdp) < 0) {
+	if (srec_get_body(sess, &sdp) < 0) {
 		LM_ERR("could not refresh recording!\n");
 		goto error;
 	}

modules/siprec/siprec_sess.c

@@ -445,7 +445,7 @@ static int srec_pop_sess(struct dlg_cell *dlg, bin_packet_t *packet)
 				goto error;
 			}
 			memcpy(&uuid, tmp.s, tmp.len);
-			if (srs_add_raw_sdp_stream(label, medianum, &uuid, sess,
+			if (srs_fill_sdp_stream(label, medianum, &uuid, sess,
 					&sess->participants[sess->participants_no - 1]) < 0) {
 				LM_ERR("cannot add new media stream!\n");
 				goto error;

modules/siprec/siprec_uuid.h

@@ -38,5 +38,8 @@ static inline void siprec_build_uuid(siprec_uuid uuid)
 	base64encode(uuid, tmp_uuid, sizeof(tmp_uuid));
 }
 
+#define siprec_cmp_uuid(a, b) \
+	memcmp(a, b, SIPREC_UUID_LEN)
+
 
 #endif /* _SIPREC_UUID_H_ */