Function pv_set_sdp_session

sdp_ops.c:1356–1483

int pv_set_sdp_session(struct sip_msg *msg, pv_param_t *param,
			int op, pv_value_t *val)
{
	struct sdp_pv_param *pvp = (struct sdp_pv_param *)param->pvn.u.dname;
	struct sip_msg_body *sbody;
	struct sdp_body_part_ops *ops;
	struct body_part *body_part;
	str body, dup_line, src_line;
	int idx, insert = 0;

	if (!msg)
		return -1;

	if (val && !(val->flags & PV_VAL_STR)) {
		LM_ERR("refusing to set SDP line to non-string value (val flags: %d)\n",
		            val->flags);
		return -1;
	}

	if (msg->body_lumps) {
		/* TODO: rebuild SDP body, clear the body lumps; assert lines_sz == 0 */
	}

	if (!have_sdp_ops(msg) || msg->sdp_ops->lines_sz == 0) {
		if (parse_sip_body(msg)<0 || !(sbody=msg->body)) {
			LM_ERR("current SIP message has no SDP body!\n");
			return -1;
		}

		first_part_by_mime( &sbody->first, body_part, (TYPE_APPLICATION<<16)+SUBTYPE_SDP );
		if (!body_part) {
			LM_ERR("current SIP message has a body, but no SDP part!\n");
			return -1;
		}

		ops = msg->sdp_ops;
		/* first time working with SDP ops => allocate DS */
		if (!ops && !(ops = msg->sdp_ops = mk_sdp_ops())) {
			LM_ERR("oom\n");
			return -1;
		}

		body = body_part->body;
		if (ops->lines_sz == 0 && sdp_ops_parse_lines(ops, &body) != 0) {
			LM_ERR("oom\n");
			return -1;
		}
	} else {
		ops = msg->sdp_ops;
	}

	idx = IDX(msg, &pvp->match_line.idx);
	switch (param->pvi.type) {
	case SDP_PV_IDX_INSERT:
		insert = 1;
		break;

	case SDP_PV_IDX_AINSERT: