Hello,
extract_mediaip() was pretty much completely refactored since there was
a bug reported by Juha, resulting in missing the setting of IP address
type. Reverting would have been wrong -- I just committed a patch to set
the address, but slightly different, to set it after the other checks
for it are done.
If you can give it a try and all works fine, it can be backported to 3.2.
Thanks,
Daniel
On 10/25/11 2:09 PM, Jason Penton wrote:
Hi All,
Just curious as to why the parsing of IP type was removed from
extract_mediaip in parser/sdp/sdp_helper_funcs.c. The latest code
looks like below (could I suggest adding the highlighted part?):
p.s. If there are no objections/responses I will commit to master branch.
Cheers
Jason
int extract_mediaip(str *body, str *mediaip, int *pf, char *line)
{
char *cp, *cp1;
int len;
cp1 = NULL;
for (cp = body->s; (len = body->s + body->len - cp) > 0;) {
cp1 = (char*)ser_memmem(cp, line, len, 2);
if (cp1 == NULL || cp1[-1] == '\n' || cp1[-1] == '\r')
break;
cp = cp1 + 2;
}
if (cp1 == NULL)
return -1;
mediaip->s = cp1 + 2;
mediaip->len = eat_line(mediaip->s, body->s + body->len -
mediaip->s) - mediaip->s;
trim_len(mediaip->len, mediaip->s, *mediaip);
if (mediaip->len == 0) {
LM_ERR("no [%s] line in SDP\n",line);
return -1;
}
/* search reverse for IP[4|6] in c=/o= line */
cp = (char*)ser_memrmem(mediaip->s, " IP", mediaip->len, 3);
if (cp == NULL) {
LM_ERR("no `IP[4|6]' in `%s' field\n",line);
return -1;
}
switch (cp[3]) {
case '4':
*pf = AF_INET;
break;
case '6':
*pf = AF_INET6;
break;
}
/* safety checks:
* - for lenght, at least 6: ' IP[4|6] x...'
* - white space after
*/
if(cp + 6 > mediaip->s + mediaip->len && cp[4]!=' ') {
LM_ERR("invalid content for `%s' line\n",line);
return -1;
}
if(cp[3]!='4' && cp[3]!='6') {
LM_ERR("invalid addrtype IPx for `%s' line\n",line);
return -1;
}
cp += 5;
/* next token is the IP address */
cp = eat_space_end(cp, mediaip->s + mediaip->len);
len = eat_token_end(cp, mediaip->s + mediaip->len) - cp;
mediaip->s = cp;
mediaip->len = len;
if (mediaip->len == 0) {
LM_ERR("no `IP[4|6]' address in `%s' field\n",line);
return -1;
}
LM_DBG("located IP address [%.*s] in `%s' field\n",
mediaip->len, mediaip->s, line);
return 1;
}
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