static void
parse_sdp_data(sdp_t *sdp)
{
int pos, len;
pos = 0;
len = strlen(sdp->data);
while (pos < len) {
int lfpos;
/* Find newline in string */
for (lfpos=pos; sdp->data[lfpos]; lfpos++) {
if (sdp->data[lfpos] == '\n') {
break;
}
}
if (sdp->data[lfpos] != '\n') {
break;
}
/* Replace newline with '\0' and parse line */
sdp->data[lfpos] = '\0';
if (lfpos > pos && sdp->data[lfpos-1] == '\r') {
sdp->data[lfpos-1] = '\0';
}
parse_sdp_line(sdp, sdp->data+pos);
pos = lfpos+1;
}
}
static bool parse_sdp_media(AmSdp* sdp_msg, char*& s, char*& next_line)
{
SdpMedia m;
m.dir = SdpMedia::DirBoth;
char* old_s = s;
bool ret = parse_media_type(s,m.type) ||
str2i(s,m.port) ||
parse_transport_prot(s,m.transport);
if(ret){
ERROR("while parsing 'm=%s' line.\n",old_s);
return true;
}
if(!ret && (m.transport == TP_RTPAVP))
ret = ret || parse_codec_list(s,m.payloads);
sdp_msg->media.push_back(m);
s = next_line;
DBG("next_line=<%s>\n",next_line);
ret = ret
// Media title
|| parse_sdp_line(sdp_msg,s,'i',true,NULL)
// connection information - optional if included at session-level
|| parse_sdp_line(sdp_msg,s,'c',true,parse_sdp_connection)
// bandwidth information
|| parse_sdp_line(sdp_msg,s,'b',true,NULL,false)
// encryption key
|| parse_sdp_line(sdp_msg,s,'k',true,NULL)
// zero or more media attribute lines
|| parse_sdp_line(sdp_msg,s,'a',true,parse_sdp_attribute,false);
if(ret){
ERROR("while parsing media attributes.\n");
return true;
}
next_line = get_next_line(s);
DBG("ret=%i; next_line=<%s>\n",ret,next_line);
return ret;
}
int AmSdp::parse()
{
char* s = r_buf;
media.clear();
bool ret =
parse_sdp_line(this,s,'v',false,NULL) ||
parse_sdp_line(this,s,'o',false,NULL) ||
parse_sdp_line(this,s,'s',false,NULL) ||
parse_sdp_line(this,s,'i',true,NULL) ||
parse_sdp_line(this,s,'u',true,NULL) ||
parse_sdp_line(this,s,'e',true,NULL,false) ||
parse_sdp_line(this,s,'p',true,NULL,false) ||
parse_sdp_line(this,s,'c',true,parse_sdp_connection) ||
parse_sdp_line(this,s,'b',true,NULL,false) ||
parse_sdp_line(this,s,'a',true,NULL,false) ||
parse_sdp_line(this,s,'t',true,NULL,false) ||
parse_sdp_line(this,s,'k',true,NULL) ||
parse_sdp_line(this,s,'a',true,NULL,false) ||
parse_sdp_line(this,s,'m',false,parse_sdp_media,false);
if(!ret && conn.address.empty()){
for(vector<SdpMedia>::iterator it = media.begin();
!ret && (it != media.end()); ++it)
ret = it->conn.address.empty();
if(ret){
ERROR("A connection field must be present in every\n");
ERROR("media description or at the session level.\n");
}
}
telephone_event_pt = findPayload("telephone-event");
return ret;
}
