static int process_session_attributes(struct sdp_chopper *chop, struct sdp_attributes *attrs,
struct sdp_ng_flags *flags)
{
GList *l;
struct sdp_attribute *attr;
for (l = attrs->list.head; l; l = l->next) {
attr = l->data;
switch (attr->attr) {
case ATTR_ICE:
case ATTR_ICE_UFRAG:
case ATTR_ICE_PWD:
case ATTR_ICE_OPTIONS:
case ATTR_ICE_LITE:
if (!flags->ice_remove && !flags->ice_force)
break;
goto strip;
case ATTR_CANDIDATE:
if (flags->ice_force_relay) {
if ((attr->u.candidate.type_str.len == 5) &&
(strncasecmp(attr->u.candidate.type_str.s, "relay", 5) == 0))
goto strip;
else
break;
}
if (!flags->ice_remove && !flags->ice_force)
break;
goto strip;
case ATTR_EXTMAP:
case ATTR_INACTIVE:
case ATTR_SENDONLY:
case ATTR_RECVONLY:
case ATTR_SENDRECV:
case ATTR_FINGERPRINT:
case ATTR_SETUP:
goto strip;
case ATTR_GROUP:
if (attr->u.group.semantics == GROUP_BUNDLE)
goto strip;
break;
default:
break;
}
continue;
strip:
if (copy_up_to(chop, &attr->full_line))
return -1;
if (skip_over(chop, &attr->full_line))
return -1;
}
return 0;
}
static int replace_network_address(struct sdp_chopper *chop, struct network_address *address,
struct packet_stream *ps, struct sdp_ng_flags *flags)
{
char buf[64];
int len;
struct packet_stream *sink = packet_stream_sink(ps);
if (is_addr_unspecified(&address->parsed)
&& !(sink && is_trickle_ice_address(&sink->advertised_endpoint)))
return 0;
if (copy_up_to(chop, &address->address_type))
return -1;
if (flags->media_address.s && is_addr_unspecified(&flags->parsed_media_address))
__parse_address(&flags->parsed_media_address, NULL, NULL, &flags->media_address);
if (!is_addr_unspecified(&flags->parsed_media_address)) {
if (IN6_IS_ADDR_V4MAPPED(&flags->parsed_media_address))
len = sprintf(buf, "IP4 " IPF, IPP(flags->parsed_media_address.s6_addr32[3]));
else {
memcpy(buf, "IP6 ", 4);
inet_ntop(AF_INET6, &flags->parsed_media_address, buf + 4, sizeof(buf)-4);
len = strlen(buf);
}
}
else
call_stream_address(buf, ps, SAF_NG, &len);
chopper_append_dup(chop, buf, len);
if (skip_over(chop, &address->address))
return -1;
return 0;
}
static int replace_network_address(struct sdp_chopper *chop, struct network_address *address,
struct packet_stream *ps, struct sdp_ng_flags *flags)
{
char buf[64];
int len;
struct packet_stream *sink = packet_stream_sink(ps);
if (is_addr_unspecified(&address->parsed)
&& !(sink && is_trickle_ice_address(&sink->advertised_endpoint)))
return 0;
if (copy_up_to(chop, &address->address_type))
return -1;
if (flags->media_address.s && is_addr_unspecified(&flags->parsed_media_address))
__parse_address(&flags->parsed_media_address, NULL, NULL, &flags->media_address);
if (!is_addr_unspecified(&flags->parsed_media_address))
len = sprintf(buf, "%s %s",
flags->parsed_media_address.family->rfc_name,
sockaddr_print_buf(&flags->parsed_media_address));
else
call_stream_address46(buf, ps, SAF_NG, &len, NULL);
chopper_append_dup(chop, buf, len);
if (skip_over(chop, &address->address))
return -1;
return 0;
}
static int replace_transport_protocol(struct sdp_chopper *chop,
struct sdp_media *media, struct call_media *cm)
{
str *tp = &media->transport;
if (!cm->protocol)
return 0;
if (copy_up_to(chop, tp))
return -1;
chopper_append_c(chop, cm->protocol->name);
if (skip_over(chop, tp))
return -1;
return 0;
}
static int replace_media_port(struct sdp_chopper *chop, struct sdp_media *media, struct packet_stream *ps) {
str *port = &media->port;
unsigned int p;
if (!media->port_num)
return 0;
if (copy_up_to(chop, port))
return -1;
p = ps->sfd ? ps->sfd->fd.localport : 0;
chopper_append_printf(chop, "%u", p);
if (skip_over(chop, port))
return -1;
return 0;
}
static int process_media_attributes(struct sdp_chopper *chop, struct sdp_media *sdp,
struct sdp_ng_flags *flags, struct call_media *media)
{
GList *l;
struct sdp_attributes *attrs = &sdp->attributes;
struct sdp_attribute *attr, *a;
for (l = attrs->list.head; l; l = l->next) {
attr = l->data;
switch (attr->attr) {
case ATTR_ICE:
case ATTR_ICE_UFRAG:
case ATTR_ICE_PWD:
case ATTR_ICE_OPTIONS:
case ATTR_ICE_LITE:
if (MEDIA_ISSET(media, PASSTHRU))
break;
if (!flags->ice_remove && !flags->ice_force)
break;
goto strip;
case ATTR_CANDIDATE:
if (MEDIA_ISSET(media, PASSTHRU))
break;
if (flags->ice_force_relay) {
if ((attr->u.candidate.type_str.len == 5) &&
(strncasecmp(attr->u.candidate.type_str.s, "relay", 5) == 0))
goto strip;
else
break;
}
if (!flags->ice_remove && !flags->ice_force)
break;
goto strip;
case ATTR_RTCP:
case ATTR_RTCP_MUX:
if (flags->ice_force_relay)
break;
case ATTR_INACTIVE:
case ATTR_SENDONLY:
case ATTR_RECVONLY:
case ATTR_SENDRECV:
goto strip;
case ATTR_EXTMAP:
case ATTR_CRYPTO:
case ATTR_FINGERPRINT:
case ATTR_SETUP:
if (MEDIA_ISSET(media, PASSTHRU))
break;
goto strip;
case ATTR_MID:
if (MEDIA_ISSET(media, PASSTHRU))
break;
a = attr_get_by_id(&sdp->session->attributes, ATTR_GROUP);
if (a && a->u.group.semantics == GROUP_BUNDLE)
goto strip;
break;
default:
break;
}
continue;
strip:
if (copy_up_to(chop, &attr->full_line))
return -1;
if (skip_over(chop, &attr->full_line))
return -1;
}
return 0;
}
