// will return the ip address present in a `c=' line in the given block
// returns: -1 on error, 0 if not found, 1 if found
static int
getMediaIPFromBlock(str *block, str *mediaip)
{
str tokens[3], zone;
char *ptr;
int count;
ptr = findLineStartingWith(block, "c=", False);
if (!ptr) {
mediaip->s = NULL;
mediaip->len = 0;
return 0;
}
zone.s = ptr + 2;
zone.len = findendline(zone.s, block->s + block->len - zone.s) - zone.s;
count = getStrTokens(&zone, tokens, 3);
if (count != 3) {
LOG(L_ERR, "error: mediaproxy/getMediaIPFromBlock(): invalid `c=' "
"line in SDP body\n");
return -1;
}
// can also check if tokens[1] == 'IP4'
*mediaip = tokens[2];
return 1;
}
static int
getMediaStreams(str *sdp, str *sessionIP, StreamInfo *streams, int limit)
{
str tokens[2], block, zone;
char *ptr, *sdpEnd;
int i, count, streamCount, result;
sdpEnd = sdp->s + sdp->len;
for (i=0, block=*sdp; i<limit; i++) {
ptr = findLineStartingWith(&block, "m=", False);
if (!ptr)
break;
zone.s = ptr + 2;
zone.len = findendline(zone.s, sdpEnd - zone.s) - zone.s;
count = getStrTokens(&zone, tokens, 2);
if (count != 2) {
LM_ERR("invalid `m=' line in the SDP body\n");
return -1;
}
streams[i].type = tokens[0];
streams[i].port = tokens[1];
block.s = zone.s + zone.len;
block.len = sdpEnd - block.s;
}
streamCount = i;
for (i=0; i<streamCount; i++) {
block.s = streams[i].port.s;
if (i < streamCount-1)
block.len = streams[i+1].port.s - block.s;
else
block.len = sdpEnd - block.s;
result = getMediaIPFromBlock(&block, &(streams[i].ip));
if (result == -1) {
LM_ERR("parse error while getting the contact IP for the "
"media stream number %d\n", i+1);
return -1;
} else if (result == 0) {
if (sessionIP->s == NULL) {
LM_ERR("media stream number %d doesn't define a contact IP "
"and the session-level IP is missing\n", i+1);
return -1;
}
streams[i].ip = *sessionIP;
streams[i].localIP = 0;
} else {
streams[i].localIP = 1;
}
}
return streamCount;
}
/*----------------------------------------------------------------------------*/
void StrToken::FormatPath(std::string& str, string del)
{
tVecStr pathTok = getStrTokens(str,del);
std::string tmp=del;
for(size_t i=0;i<pathTok.size();i++)
{
tmp += pathTok[i] + "/";
}
str=tmp;
}
