int
nr_ice_peer_ctx_parse_media_stream_attribute(nr_ice_peer_ctx *pctx, nr_ice_media_stream *stream, char *attr)
{
int r,_status;
char *orig = 0;
char *str;
orig = str = attr;
if (!strncasecmp(str, "ice-ufrag:", 10)) {
fast_forward(&str, 10);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if ((r=grab_token(&str, &stream->ufrag)))
ABORT(r);
}
else if (!strncasecmp(str, "ice-pwd:", 8)) {
fast_forward(&str, 8);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if ((r=grab_token(&str, &stream->pwd)))
ABORT(r);
}
else {
ABORT(R_BAD_DATA);
}
skip_whitespace(&str);
/* RFC 5245 grammar doesn't have an extension point for ice-pwd or
ice-ufrag: if there's anything left on the line, we treat it as bad. */
if (str[0] != '\0') {
ABORT(R_BAD_DATA);
}
_status=0;
abort:
if (_status) {
if (orig)
r_log(LOG_ICE,LOG_WARNING,"ICE-PEER(%s): Error parsing attribute: %s",pctx->label,orig);
}
return(_status);
}
int
nr_ice_peer_ctx_parse_media_stream_attribute(nr_ice_peer_ctx *pctx, nr_ice_media_stream *stream, char *attr)
{
int r,_status;
char *orig = 0;
char *str;
orig = str = attr;
if (!strncasecmp(str, "ice-ufrag:", 10)) {
fast_forward(&str, 10);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if ((r=grab_token(&str, &stream->ufrag)))
ABORT(r);
}
else if (!strncasecmp(str, "ice-pwd:", 8)) {
fast_forward(&str, 8);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if ((r=grab_token(&str, &stream->pwd)))
ABORT(r);
}
else {
ABORT(R_BAD_DATA);
}
skip_whitespace(&str);
/* it's expected to be at EOD at this point */
assert(strlen(str) == 0);
_status=0;
abort:
if (_status) {
if (orig)
r_log(LOG_ICE,LOG_WARNING,"ICE-PEER(%s): Error parsing attribute: %s",pctx->label,orig);
}
return(_status);
}
int
nr_ice_peer_ctx_parse_global_attributes(nr_ice_peer_ctx *pctx, char **attrs, int attr_ct)
{
int r,_status;
int i;
char *orig = 0;
char *str;
char *component_id;
char *connection_address;
unsigned int port;
in_addr_t addr;
char *ice_option_tag;
for(i=0;i<attr_ct;i++){
orig = str = attrs[i];
component_id = 0;
connection_address = 0;
ice_option_tag = 0;
if (!strncasecmp(str, "remote-candidates:", 18)) {
fast_forward(&str, 18);
skip_whitespace(&str);
while (*str != '\0') {
if ((r=grab_token(&str, &component_id)))
ABORT(r);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if ((r=grab_token(&str, &connection_address)))
ABORT(r);
if (*str == '\0')
ABORT(R_BAD_DATA);
addr = inet_addr(connection_address);
if (addr == INADDR_NONE)
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if (sscanf(str, "%u", &port) != 1)
ABORT(R_BAD_DATA);
if (port < 1 || port > 0x0FFFF)
ABORT(R_BAD_DATA);
skip_to_past_space(&str);
#if 0
/* TODO: !nn! just drop on the floor for now, later put somewhere */
/* Assume v4 for now */
if(r=nr_ip4_port_to_transport_addr(ntohl(addr),port,IPPROTO_UDP,&candidate->base))
ABORT(r);
TAILQ_INSERT_TAIL(head, elm, field);
#endif
component_id = 0; /* prevent free */
RFREE(connection_address);
connection_address = 0; /* prevent free */
}
}
else if (!strncasecmp(str, "ice-lite", 8)) {
pctx->peer_lite = 1;
fast_forward(&str, 8);
}
else if (!strncasecmp(str, "ice-mismatch", 12)) {
pctx->peer_ice_mismatch = 1;
fast_forward(&str, 12);
}
else if (!strncasecmp(str, "ice-ufrag:", 10)) {
fast_forward(&str, 10);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if ((r=grab_token(&str, &pctx->peer_ufrag)))
ABORT(r);
}
else if (!strncasecmp(str, "ice-pwd:", 8)) {
fast_forward(&str, 8);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if ((r=grab_token(&str, &pctx->peer_pwd)))
ABORT(r);
}
else if (!strncasecmp(str, "ice-options:", 12)) {
fast_forward(&str, 12);
skip_whitespace(&str);
while (*str != '\0') {
if ((r=grab_token(&str, &ice_option_tag)))
ABORT(r);
skip_whitespace(&str);
#if 0
//TODO: !nn! for now, just drop on the floor, later put somewhere
#endif
ice_option_tag = 0; /* prevent free */
}
}
else {
ABORT(R_BAD_DATA);
}
skip_whitespace(&str);
/* it's expected to be at EOD at this point */
assert(strlen(str) == 0);
}
_status=0;
abort:
if (_status) {
if (orig)
r_log(LOG_ICE,LOG_WARNING,"ICE-PEER(%s): Error parsing attribute: %s",pctx->label,orig);
}
RFREE(connection_address);
RFREE(component_id);
RFREE(ice_option_tag);
return(_status);
}
int
nr_ice_peer_candidate_from_attribute(nr_ice_ctx *ctx,char *orig,nr_ice_media_stream *stream,nr_ice_candidate **candp)
{
int r,_status;
char* str = orig;
nr_ice_candidate *cand;
char *connection_address=0;
unsigned int port;
in_addr_t addr;
int i;
unsigned int component_id;
char *rel_addr=0;
if(!(cand=RCALLOC(sizeof(nr_ice_candidate))))
ABORT(R_NO_MEMORY);
if(!(cand->label=r_strdup(orig)))
ABORT(R_NO_MEMORY);
cand->ctx=ctx;
cand->isock=0;
cand->state=NR_ICE_CAND_PEER_CANDIDATE;
cand->stream=stream;
skip_whitespace(&str);
/* Candidate attr */
if (strncasecmp(str, "candidate:", 10))
ABORT(R_BAD_DATA);
fast_forward(&str, 10);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
/* Foundation */
if ((r=grab_token(&str, &cand->foundation)))
ABORT(r);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
/* component */
if (sscanf(str, "%u", &component_id) != 1)
ABORT(R_BAD_DATA);
if (component_id < 1 || component_id > 256)
ABORT(R_BAD_DATA);
cand->component_id = (UCHAR)component_id;
skip_to_past_space(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
/* Protocol */
if (strncasecmp(str, "UDP", 3))
ABORT(R_BAD_DATA);
fast_forward(&str, 3);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
/* priority */
if (sscanf(str, "%u", &cand->priority) != 1)
ABORT(R_BAD_DATA);
if (cand->priority < 1)
ABORT(R_BAD_DATA);
skip_to_past_space(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
/* Peer address/port */
if ((r=grab_token(&str, &connection_address)))
ABORT(r);
if (*str == '\0')
ABORT(R_BAD_DATA);
addr = inet_addr(connection_address);
if (addr == INADDR_NONE)
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if (sscanf(str, "%u", &port) != 1)
ABORT(R_BAD_DATA);
if (port < 1 || port > 0x0FFFF)
ABORT(R_BAD_DATA);
/* Assume v4 for now */
if(r=nr_ip4_port_to_transport_addr(ntohl(addr),port,IPPROTO_UDP,&cand->addr))
ABORT(r);
skip_to_past_space(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
/* Type */
if (strncasecmp("typ", str, 3))
ABORT(R_BAD_DATA);
fast_forward(&str, 3);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
assert(nr_ice_candidate_type_names[0] == 0);
for (i = 1; nr_ice_candidate_type_names[i]; ++i) {
if(!strncasecmp(nr_ice_candidate_type_names[i], str, strlen(nr_ice_candidate_type_names[i]))) {
cand->type=i;
break;
}
}
if (nr_ice_candidate_type_names[i] == 0)
ABORT(R_BAD_DATA);
fast_forward(&str, strlen(nr_ice_candidate_type_names[i]));
/* Look for the other side's raddr, rport */
/* raddr, rport */
switch (cand->type) {
case HOST:
break;
case SERVER_REFLEXIVE:
case PEER_REFLEXIVE:
case RELAYED:
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if (strncasecmp("raddr", str, 5))
ABORT(R_BAD_DATA);
fast_forward(&str, 5);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if ((r=grab_token(&str, &rel_addr)))
ABORT(r);
if (*str == '\0')
ABORT(R_BAD_DATA);
addr = inet_addr(rel_addr);
if (addr == INADDR_NONE)
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if (strncasecmp("rport", str, 5))
ABORT(R_BAD_DATA);
fast_forward(&str, 5);
if (*str == '\0')
ABORT(R_BAD_DATA);
skip_whitespace(&str);
if (*str == '\0')
ABORT(R_BAD_DATA);
if (sscanf(str, "%u", &port) != 1)
ABORT(R_BAD_DATA);
if (port < 1 || port > 0x0FFFF)
ABORT(R_BAD_DATA);
/* Assume v4 for now */
if(r=nr_ip4_port_to_transport_addr(ntohl(addr),port,IPPROTO_UDP,&cand->base))
ABORT(r);
skip_to_past_space(&str);
/* it's expected to be at EOD at this point */
break;
default:
ABORT(R_INTERNAL);
break;
}
skip_whitespace(&str);
assert(strlen(str) == 0);
*candp=cand;
_status=0;
abort:
if (_status)
r_log(LOG_ICE,LOG_WARNING,"ICE(%s): Error parsing attribute: %s",ctx->label,orig);
RFREE(connection_address);
RFREE(rel_addr);
return(_status);
}
