static pj_bool_t turn_on_data_recvfrom(pj_activesock_t *asock,
void *data,
pj_size_t size,
const pj_sockaddr_t *src_addr,
int addr_len,
pj_status_t status)
{
test_server *test_srv;
pj_pool_t *pool;
turn_allocation *alloc;
pj_stun_msg *req, *resp = NULL;
pj_str_t auth_key = { NULL, 0 };
char client_info[PJ_INET6_ADDRSTRLEN+10];
unsigned i;
pj_ssize_t len;
if (status != PJ_SUCCESS)
return PJ_TRUE;
pj_sockaddr_print(src_addr, client_info, sizeof(client_info), 3);
test_srv = (test_server*) pj_activesock_get_user_data(asock);
pool = pj_pool_create(test_srv->stun_cfg->pf, NULL, 512, 512, NULL);
/* Find the client */
for (i=0; i<test_srv->turn_alloc_cnt; i++) {
if (pj_sockaddr_cmp(&test_srv->turn_alloc[i].client_addr, src_addr)==0)
break;
}
if (pj_stun_msg_check((pj_uint8_t*)data, size, PJ_STUN_NO_FINGERPRINT_CHECK)!=PJ_SUCCESS) {
/* Not STUN message, this probably is a ChannelData */
pj_turn_channel_data cd;
const pj_turn_channel_data *pcd = (const pj_turn_channel_data*)data;
pj_ssize_t sent;
if (i==test_srv->turn_alloc_cnt) {
/* Invalid data */
PJ_LOG(1,(THIS_FILE,
"TURN Server received strayed data"));
goto on_return;
}
alloc = &test_srv->turn_alloc[i];
cd.ch_number = pj_ntohs(pcd->ch_number);
cd.length = pj_ntohs(pcd->length);
/* For UDP check the packet length */
if (size < cd.length+sizeof(cd)) {
PJ_LOG(1,(THIS_FILE,
"TURN Server: ChannelData discarded: UDP size error"));
goto on_return;
}
/* Lookup peer */
for (i=0; i<alloc->perm_cnt; ++i) {
if (alloc->chnum[i] == cd.ch_number)
break;
}
if (i==alloc->perm_cnt) {
PJ_LOG(1,(THIS_FILE,
"TURN Server: ChannelData discarded: invalid channel number"));
goto on_return;
}
/* Relay the data to peer */
sent = cd.length;
pj_activesock_sendto(alloc->sock, &alloc->send_key,
pcd+1, &sent, 0,
&alloc->perm[i],
pj_sockaddr_get_len(&alloc->perm[i]));
/* Done */
goto on_return;
}
status = pj_stun_msg_decode(pool, (pj_uint8_t*)data, size,
PJ_STUN_IS_DATAGRAM | PJ_STUN_CHECK_PACKET |
PJ_STUN_NO_FINGERPRINT_CHECK,
&req, NULL, NULL);
if (status != PJ_SUCCESS) {
char errmsg[PJ_ERR_MSG_SIZE];
pj_strerror(status, errmsg, sizeof(errmsg));
PJ_LOG(1,("", "STUN message decode error from client %s: %s", client_info, errmsg));
goto on_return;
}
if (i==test_srv->turn_alloc_cnt) {
/* New client */
//pj_str_t ip_addr;
pj_stun_username_attr *uname;
pj_activesock_cb alloc_sock_cb;
turn_allocation *alloc;
/* Must be Allocate request */
if (req->hdr.type != PJ_STUN_ALLOCATE_REQUEST) {
PJ_LOG(1,(THIS_FILE, "Invalid %s %s from client %s",
pj_stun_get_method_name(req->hdr.type),
pj_stun_get_class_name(req->hdr.type),
client_info));
if (PJ_STUN_IS_REQUEST(req->hdr.type))
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_BAD_REQUEST, NULL, &resp);
goto send_pkt;
}
test_srv->turn_stat.rx_allocate_cnt++;
/* Skip if we're not responding to Allocate request */
if (!test_srv->turn_respond_allocate)
return PJ_TRUE;
/* Check if we have too many clients */
if (test_srv->turn_alloc_cnt == MAX_TURN_ALLOC) {
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_INSUFFICIENT_CAPACITY, NULL, &resp);
goto send_pkt;
}
/* Get USERNAME attribute */
uname = (pj_stun_username_attr*)
pj_stun_msg_find_attr(req, PJ_STUN_ATTR_USERNAME, 0);
/* Reject if it doesn't have MESSAGE-INTEGRITY or USERNAME attributes or
* the user is incorrect
*/
if (pj_stun_msg_find_attr(req, PJ_STUN_ATTR_MESSAGE_INTEGRITY, 0) == NULL ||
uname==NULL || pj_stricmp2(&uname->value, TURN_USERNAME) != 0)
{
pj_str_t tmp;
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_UNAUTHORIZED, NULL, &resp);
pj_stun_msg_add_string_attr(pool, resp, PJ_STUN_ATTR_REALM, &test_srv->domain);
pj_stun_msg_add_string_attr(pool, resp, PJ_STUN_ATTR_NONCE, pj_cstr(&tmp, TURN_NONCE));
goto send_pkt;
}
pj_bzero(&alloc_sock_cb, sizeof(alloc_sock_cb));
alloc_sock_cb.on_data_recvfrom = &alloc_on_data_recvfrom;
/* Create allocation */
alloc = &test_srv->turn_alloc[test_srv->turn_alloc_cnt];
alloc->perm_cnt = 0;
alloc->test_srv = test_srv;
pj_memcpy(&alloc->client_addr, src_addr, addr_len);
pj_ioqueue_op_key_init(&alloc->send_key, sizeof(alloc->send_key));
alloc->pool = pj_pool_create(test_srv->stun_cfg->pf, "alloc", 512, 512, NULL);
/* Create relay socket */
pj_sockaddr_in_init(&alloc->alloc_addr.ipv4, NULL, 0);
pj_gethostip(pj_AF_INET(), &alloc->alloc_addr);
status = pj_activesock_create_udp(alloc->pool, &alloc->alloc_addr, NULL,
test_srv->stun_cfg->ioqueue,
&alloc_sock_cb, alloc,
&alloc->sock, &alloc->alloc_addr);
if (status != PJ_SUCCESS) {
pj_pool_release(alloc->pool);
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_SERVER_ERROR, NULL, &resp);
goto send_pkt;
}
//pj_sockaddr_set_str_addr(pj_AF_INET(), &alloc->alloc_addr, &ip_addr);
pj_activesock_set_user_data(alloc->sock, alloc);
status = pj_activesock_start_recvfrom(alloc->sock, alloc->pool, 1500, 0);
if (status != PJ_SUCCESS) {
pj_activesock_close(alloc->sock);
pj_pool_release(alloc->pool);
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_SERVER_ERROR, NULL, &resp);
goto send_pkt;
}
/* Create Data indication */
status = pj_stun_msg_create(alloc->pool, PJ_STUN_DATA_INDICATION,
PJ_STUN_MAGIC, NULL, &alloc->data_ind);
if (status != PJ_SUCCESS) {
pj_activesock_close(alloc->sock);
pj_pool_release(alloc->pool);
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_SERVER_ERROR, NULL, &resp);
goto send_pkt;
}
pj_stun_msg_add_sockaddr_attr(alloc->pool, alloc->data_ind,
PJ_STUN_ATTR_XOR_PEER_ADDR, PJ_TRUE,
&alloc->alloc_addr,
pj_sockaddr_get_len(&alloc->alloc_addr));
pj_stun_msg_add_binary_attr(alloc->pool, alloc->data_ind,
PJ_STUN_ATTR_DATA, (pj_uint8_t*)"", 1);
/* Create response */
resp = create_success_response(test_srv, alloc, req, pool, 600, &auth_key);
if (resp == NULL) {
pj_activesock_close(alloc->sock);
pj_pool_release(alloc->pool);
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_SERVER_ERROR, NULL, &resp);
goto send_pkt;
}
++test_srv->turn_alloc_cnt;
} else {
alloc = &test_srv->turn_alloc[i];
if (req->hdr.type == PJ_STUN_ALLOCATE_REQUEST) {
test_srv->turn_stat.rx_allocate_cnt++;
/* Skip if we're not responding to Allocate request */
if (!test_srv->turn_respond_allocate)
return PJ_TRUE;
resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key);
} else if (req->hdr.type == PJ_STUN_REFRESH_REQUEST) {
pj_stun_lifetime_attr *lf_attr;
test_srv->turn_stat.rx_refresh_cnt++;
/* Skip if we're not responding to Refresh request */
if (!test_srv->turn_respond_refresh)
return PJ_TRUE;
lf_attr = (pj_stun_lifetime_attr*)
pj_stun_msg_find_attr(req, PJ_STUN_ATTR_LIFETIME, 0);
if (lf_attr && lf_attr->value != 0) {
resp = create_success_response(test_srv, alloc, req, pool, 600, &auth_key);
pj_array_erase(test_srv->turn_alloc, sizeof(test_srv->turn_alloc[0]),
test_srv->turn_alloc_cnt, i);
--test_srv->turn_alloc_cnt;
} else
resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key);
} else if (req->hdr.type == PJ_STUN_CREATE_PERM_REQUEST) {
for (i=0; i<req->attr_count; ++i) {
if (req->attr[i]->type == PJ_STUN_ATTR_XOR_PEER_ADDR) {
pj_stun_xor_peer_addr_attr *pa = (pj_stun_xor_peer_addr_attr*)req->attr[i];
unsigned j;
for (j=0; j<alloc->perm_cnt; ++j) {
if (pj_sockaddr_cmp(&alloc->perm[j], &pa->sockaddr)==0)
break;
}
if (j==alloc->perm_cnt && alloc->perm_cnt < MAX_TURN_PERM) {
char peer_info[PJ_INET6_ADDRSTRLEN];
pj_sockaddr_print(&pa->sockaddr, peer_info, sizeof(peer_info), 3);
pj_sockaddr_cp(&alloc->perm[alloc->perm_cnt], &pa->sockaddr);
++alloc->perm_cnt;
PJ_LOG(5,("", "Permission %s added to client %s, perm_cnt=%d",
peer_info, client_info, alloc->perm_cnt));
}
}
}
resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key);
} else if (req->hdr.type == PJ_STUN_SEND_INDICATION) {
pj_stun_xor_peer_addr_attr *pa;
pj_stun_data_attr *da;
test_srv->turn_stat.rx_send_ind_cnt++;
pa = (pj_stun_xor_peer_addr_attr*)
pj_stun_msg_find_attr(req, PJ_STUN_ATTR_XOR_PEER_ADDR, 0);
da = (pj_stun_data_attr*)
pj_stun_msg_find_attr(req, PJ_STUN_ATTR_DATA, 0);
if (pa && da) {
unsigned j;
char peer_info[PJ_INET6_ADDRSTRLEN];
pj_ssize_t sent;
pj_sockaddr_print(&pa->sockaddr, peer_info, sizeof(peer_info), 3);
for (j=0; j<alloc->perm_cnt; ++j) {
if (pj_sockaddr_cmp(&alloc->perm[j], &pa->sockaddr)==0)
break;
}
if (j==alloc->perm_cnt) {
PJ_LOG(5,("", "SendIndication to %s is rejected (no permission)",
peer_info, client_info, alloc->perm_cnt));
} else {
PJ_LOG(5,(THIS_FILE, "Relaying %d bytes data from client %s to peer %s, "
"perm_cnt=%d",
da->length, client_info, peer_info, alloc->perm_cnt));
sent = da->length;
pj_activesock_sendto(alloc->sock, &alloc->send_key,
da->data, &sent, 0,
&pa->sockaddr,
pj_sockaddr_get_len(&pa->sockaddr));
}
} else {
PJ_LOG(1,(THIS_FILE, "Invalid Send Indication from %s", client_info));
}
} else if (req->hdr.type == PJ_STUN_CHANNEL_BIND_REQUEST) {
pj_stun_xor_peer_addr_attr *pa;
pj_stun_channel_number_attr *cna;
unsigned j, cn;
pa = (pj_stun_xor_peer_addr_attr*)
pj_stun_msg_find_attr(req, PJ_STUN_ATTR_XOR_PEER_ADDR, 0);
cna = (pj_stun_channel_number_attr*)
pj_stun_msg_find_attr(req, PJ_STUN_ATTR_CHANNEL_NUMBER, 0);
cn = PJ_STUN_GET_CH_NB(cna->value);
resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key);
for (j=0; j<alloc->perm_cnt; ++j) {
if (pj_sockaddr_cmp(&alloc->perm[j], &pa->sockaddr)==0)
break;
}
if (i==alloc->perm_cnt) {
if (alloc->perm_cnt==MAX_TURN_PERM) {
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_INSUFFICIENT_CAPACITY, NULL, &resp);
goto send_pkt;
}
pj_sockaddr_cp(&alloc->perm[i], &pa->sockaddr);
++alloc->perm_cnt;
}
alloc->chnum[i] = cn;
resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key);
} else if (PJ_STUN_IS_REQUEST(req->hdr.type)) {
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_BAD_REQUEST, NULL, &resp);
}
}
send_pkt:
if (resp) {
status = pj_stun_msg_encode(resp, (pj_uint8_t*)data, MAX_STUN_PKT,
0, &auth_key, &size);
if (status != PJ_SUCCESS)
goto on_return;
len = size;
status = pj_activesock_sendto(asock, &test_srv->send_key, data, &len,
0, src_addr, addr_len);
}
on_return:
pj_pool_release(pool);
return PJ_TRUE;
}
/*
* Callback notification from STUN session when it receives STUN
* requests. This callback was trigger by STUN incoming message
* processing in pj_turn_allocation_on_rx_client_pkt().
*/
static pj_status_t stun_on_rx_request(pj_stun_session *sess,
const pj_uint8_t *pkt,
unsigned pkt_len,
const pj_stun_rx_data *rdata,
void *token,
const pj_sockaddr_t *src_addr,
unsigned src_addr_len)
{
const pj_stun_msg *msg = rdata->msg;
pj_turn_allocation *alloc;
PJ_UNUSED_ARG(pkt);
PJ_UNUSED_ARG(pkt_len);
PJ_UNUSED_ARG(token);
PJ_UNUSED_ARG(src_addr);
PJ_UNUSED_ARG(src_addr_len);
alloc = (pj_turn_allocation*) pj_stun_session_get_user_data(sess);
/* Refuse to serve any request if we've been shutdown */
if (alloc->relay.lifetime == 0) {
/* Reject with 437 if we're shutting down */
send_reply_err(alloc, rdata, PJ_TRUE,
PJ_STUN_SC_ALLOCATION_MISMATCH, NULL);
return PJ_SUCCESS;
}
if (msg->hdr.type == PJ_STUN_REFRESH_REQUEST) {
/*
* Handle REFRESH request
*/
pj_stun_lifetime_attr *lifetime;
pj_stun_bandwidth_attr *bandwidth;
/* Get LIFETIME attribute */
lifetime = (pj_stun_lifetime_attr*)
pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_LIFETIME, 0);
/* Get BANDWIDTH attribute */
bandwidth = (pj_stun_bandwidth_attr*)
pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_BANDWIDTH, 0);
/* TODO: process bandwidth */
PJ_UNUSED_ARG(bandwidth);
if (lifetime && lifetime->value==0) {
/*
* This is deallocation request.
*/
alloc->relay.lifetime = 0;
/* Respond first */
send_reply_ok(alloc, rdata);
/* Shutdown allocation */
PJ_LOG(4,(alloc->obj_name,
"Client %s request to dealloc, shutting down",
alloc->info));
alloc_shutdown(alloc);
} else {
/*
* This is a refresh request.
*/
/* Update lifetime */
if (lifetime) {
alloc->relay.lifetime = lifetime->value;
}
/* Update bandwidth */
// TODO:
/* Update expiration timer */
resched_timeout(alloc);
/* Send reply */
send_reply_ok(alloc, rdata);
}
} else if (msg->hdr.type == PJ_STUN_CHANNEL_BIND_REQUEST) {
/*
* ChannelBind request.
*/
pj_stun_channel_number_attr *ch_attr;
pj_stun_xor_peer_addr_attr *peer_attr;
pj_turn_permission *p1, *p2;
ch_attr = (pj_stun_channel_number_attr*)
pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_CHANNEL_NUMBER, 0);
peer_attr = (pj_stun_xor_peer_addr_attr*)
pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_XOR_PEER_ADDR, 0);
if (!ch_attr || !peer_attr) {
send_reply_err(alloc, rdata, PJ_TRUE,
PJ_STUN_SC_BAD_REQUEST, NULL);
return PJ_SUCCESS;
}
/* Find permission with the channel number */
p1 = lookup_permission_by_chnum(alloc, PJ_STUN_GET_CH_NB(ch_attr->value));
/* If permission is found, this is supposed to be a channel bind
* refresh. Make sure it's for the same peer.
*/
if (p1) {
if (pj_sockaddr_cmp(&p1->hkey.peer_addr, &peer_attr->sockaddr)) {
/* Address mismatch. Send 400 */
send_reply_err(alloc, rdata, PJ_TRUE,
PJ_STUN_SC_BAD_REQUEST,
"Peer address mismatch");
return PJ_SUCCESS;
}
/* Refresh permission */
refresh_permission(p1);
/* Send response */
send_reply_ok(alloc, rdata);
/* Done */
return PJ_SUCCESS;
}
/* If permission is not found, create a new one. Make sure the peer
* has not alreadyy assigned with a channel number.
*/
p2 = lookup_permission_by_addr(alloc, &peer_attr->sockaddr,
pj_sockaddr_get_len(&peer_attr->sockaddr));
if (p2 && p2->channel != PJ_TURN_INVALID_CHANNEL) {
send_reply_err(alloc, rdata, PJ_TRUE, PJ_STUN_SC_BAD_REQUEST,
"Peer address already assigned a channel number");
return PJ_SUCCESS;
}
/* Create permission if it doesn't exist */
if (!p2) {
p2 = create_permission(alloc, &peer_attr->sockaddr,
pj_sockaddr_get_len(&peer_attr->sockaddr));
if (!p2)
return PJ_SUCCESS;
}
/* Assign channel number to permission */
p2->channel = PJ_STUN_GET_CH_NB(ch_attr->value);
/* Register to hash table */
pj_assert(sizeof(p2->channel)==2);
pj_hash_set(alloc->pool, alloc->ch_table, &p2->channel,
sizeof(p2->channel), 0, p2);
/* Update */
refresh_permission(p2);
/* Reply */
send_reply_ok(alloc, rdata);
return PJ_SUCCESS;
} else if (msg->hdr.type == PJ_STUN_ALLOCATE_REQUEST) {
/* Respond with 437 (section 6.3 turn-07) */
send_reply_err(alloc, rdata, PJ_TRUE, PJ_STUN_SC_ALLOCATION_MISMATCH,
NULL);
} else {
/* Respond with Bad Request? */
send_reply_err(alloc, rdata, PJ_TRUE, PJ_STUN_SC_BAD_REQUEST, NULL);
}
return PJ_SUCCESS;
}
static int print_attr(char *buffer, unsigned length,
const pj_stun_attr_hdr *ahdr)
{
char *p = buffer, *end = buffer + length;
const char *attr_name = pj_stun_get_attr_name(ahdr->type);
char attr_buf[32];
int len;
if (*attr_name == '?') {
pj_ansi_snprintf(attr_buf, sizeof(attr_buf), "Attr 0x%x",
ahdr->type);
attr_name = attr_buf;
}
len = pj_ansi_snprintf(p, end-p,
" %s: length=%d",
attr_name,
(int)ahdr->length);
APPLY();
switch (ahdr->type) {
case PJ_STUN_ATTR_MAPPED_ADDR:
case PJ_STUN_ATTR_RESPONSE_ADDR:
case PJ_STUN_ATTR_SOURCE_ADDR:
case PJ_STUN_ATTR_CHANGED_ADDR:
case PJ_STUN_ATTR_REFLECTED_FROM:
case PJ_STUN_ATTR_XOR_PEER_ADDR:
case PJ_STUN_ATTR_XOR_RELAYED_ADDR:
case PJ_STUN_ATTR_XOR_MAPPED_ADDR:
case PJ_STUN_ATTR_XOR_REFLECTED_FROM:
case PJ_STUN_ATTR_ALTERNATE_SERVER:
{
const pj_stun_sockaddr_attr *attr;
attr = (const pj_stun_sockaddr_attr*)ahdr;
if (attr->sockaddr.addr.sa_family == pj_AF_INET()) {
len = pj_ansi_snprintf(p, end-p,
", IPv4 addr=%s:%d\n",
pj_inet_ntoa(attr->sockaddr.ipv4.sin_addr),
pj_ntohs(attr->sockaddr.ipv4.sin_port));
} else if (attr->sockaddr.addr.sa_family == pj_AF_INET6()) {
len = pj_ansi_snprintf(p, end-p,
", IPv6 addr present\n");
} else {
len = pj_ansi_snprintf(p, end-p,
", INVALID ADDRESS FAMILY!\n");
}
APPLY();
}
break;
case PJ_STUN_ATTR_CHANNEL_NUMBER:
{
const pj_stun_uint_attr *attr;
attr = (const pj_stun_uint_attr*)ahdr;
len = pj_ansi_snprintf(p, end-p,
", chnum=%u (0x%x)\n",
(int)PJ_STUN_GET_CH_NB(attr->value),
(int)PJ_STUN_GET_CH_NB(attr->value));
APPLY();
}
break;
case PJ_STUN_ATTR_CHANGE_REQUEST:
case PJ_STUN_ATTR_LIFETIME:
case PJ_STUN_ATTR_BANDWIDTH:
case PJ_STUN_ATTR_REQ_ADDR_TYPE:
case PJ_STUN_ATTR_EVEN_PORT:
case PJ_STUN_ATTR_REQ_TRANSPORT:
case PJ_STUN_ATTR_TIMER_VAL:
case PJ_STUN_ATTR_PRIORITY:
case PJ_STUN_ATTR_FINGERPRINT:
case PJ_STUN_ATTR_REFRESH_INTERVAL:
case PJ_STUN_ATTR_ICMP:
{
const pj_stun_uint_attr *attr;
attr = (const pj_stun_uint_attr*)ahdr;
len = pj_ansi_snprintf(p, end-p,
", value=%u (0x%x)\n",
(pj_uint32_t)attr->value,
(pj_uint32_t)attr->value);
APPLY();
}
break;
case PJ_STUN_ATTR_USERNAME:
case PJ_STUN_ATTR_PASSWORD:
case PJ_STUN_ATTR_REALM:
case PJ_STUN_ATTR_NONCE:
case PJ_STUN_ATTR_SOFTWARE:
{
const pj_stun_string_attr *attr;
attr = (pj_stun_string_attr*)ahdr;
len = pj_ansi_snprintf(p, end-p,
", value=\"%.*s\"\n",
(int)attr->value.slen,
attr->value.ptr);
APPLY();
}
break;
case PJ_STUN_ATTR_ERROR_CODE:
{
const pj_stun_errcode_attr *attr;
attr = (const pj_stun_errcode_attr*) ahdr;
len = pj_ansi_snprintf(p, end-p,
", err_code=%d, reason=\"%.*s\"\n",
attr->err_code,
(int)attr->reason.slen,
attr->reason.ptr);
APPLY();
}
break;
case PJ_STUN_ATTR_UNKNOWN_ATTRIBUTES:
{
const pj_stun_unknown_attr *attr;
unsigned j;
attr = (const pj_stun_unknown_attr*) ahdr;
len = pj_ansi_snprintf(p, end-p,
", unknown list:");
APPLY();
for (j=0; j<attr->attr_count; ++j) {
len = pj_ansi_snprintf(p, end-p,
" %d",
(int)attr->attrs[j]);
APPLY();
}
}
break;
case PJ_STUN_ATTR_MESSAGE_INTEGRITY:
{
const pj_stun_msgint_attr *attr;
attr = (const pj_stun_msgint_attr*) ahdr;
len = print_binary(p, (unsigned)(end-p), attr->hmac, 20);
APPLY();
}
break;
case PJ_STUN_ATTR_DATA:
{
const pj_stun_binary_attr *attr;
attr = (const pj_stun_binary_attr*) ahdr;
len = print_binary(p, (unsigned)(end-p), attr->data, attr->length);
APPLY();
}
break;
case PJ_STUN_ATTR_ICE_CONTROLLED:
case PJ_STUN_ATTR_ICE_CONTROLLING:
case PJ_STUN_ATTR_RESERVATION_TOKEN:
{
const pj_stun_uint64_attr *attr;
pj_uint8_t data[8];
int i;
attr = (const pj_stun_uint64_attr*) ahdr;
for (i=0; i<8; ++i)
data[i] = ((const pj_uint8_t*)&attr->value)[7-i];
len = print_binary(p, (unsigned)(end-p), data, 8);
APPLY();
}
break;
case PJ_STUN_ATTR_USE_CANDIDATE:
case PJ_STUN_ATTR_DONT_FRAGMENT:
default:
len = pj_ansi_snprintf(p, end-p, "\n");
APPLY();
break;
}
return (int)(p-buffer);
on_return:
return len;
}
