/* Send application data */
PJ_DEF(pj_status_t) pj_stun_sock_sendto( pj_stun_sock *stun_sock,
pj_ioqueue_op_key_t *send_key,
const void *pkt,
unsigned pkt_len,
unsigned flag,
const pj_sockaddr_t *dst_addr,
unsigned addr_len)
{
pj_ssize_t size;
pj_status_t status;
pj_bool_t is_stun = PJ_FALSE;
pj_bool_t is_tnl_data = PJ_FALSE;
PJ_ASSERT_RETURN(stun_sock && pkt && dst_addr && addr_len, PJ_EINVAL);
pj_grp_lock_acquire(stun_sock->grp_lock);
if (!stun_sock->active_sock) {
/* We have been shutdown, but this callback may still get called
* by retransmit timer.
*/
pj_grp_lock_release(stun_sock->grp_lock);
return PJ_EINVALIDOP;
}
if (send_key==NULL)
send_key = &stun_sock->send_key;
size = pkt_len;
if (!stun_sock || !stun_sock->active_sock)
return PJ_EINVALIDOP;
/* Check that this is STUN message */
status = pj_stun_msg_check((const pj_uint8_t*)pkt, size,
PJ_STUN_IS_DATAGRAM | PJ_STUN_CHECK_PACKET);
if (status == PJ_SUCCESS)
is_stun = PJ_TRUE;
else
is_tnl_data = (((pj_uint8_t*)pkt)[pkt_len] == 1);
if(is_stun || !is_tnl_data) {
pj_ioqueue_op_key_t *op_key = (pj_ioqueue_op_key_t*)pj_mem_alloc(sizeof(pj_ioqueue_op_key_t));
pj_ioqueue_op_key_init(op_key, sizeof(pj_ioqueue_op_key_t));
status = pj_activesock_sendto(stun_sock->active_sock, op_key,
pkt, &size, (flag | PJ_IOQUEUE_URGENT_DATA), dst_addr, addr_len);
} else {
status = pj_activesock_sendto(stun_sock->active_sock, &stun_sock->send_key,
pkt, &size, flag, dst_addr, addr_len);
}
pj_grp_lock_release(stun_sock->grp_lock);
return status;
}
/* This callback is called by the STUN session to send packet */
static pj_status_t sess_on_send_msg(pj_stun_session *sess,
void *token,
const void *pkt,
pj_size_t pkt_size,
const pj_sockaddr_t *dst_addr,
unsigned addr_len)
{
pj_stun_sock *stun_sock;
pj_ssize_t size;
stun_sock = (pj_stun_sock *) pj_stun_session_get_user_data(sess);
if (!stun_sock || !stun_sock->active_sock) {
/* We have been shutdown, but this callback may still get called
* by retransmit timer.
*/
return PJ_EINVALIDOP;
}
pj_assert(token==INTERNAL_MSG_TOKEN);
PJ_UNUSED_ARG(token);
size = pkt_size;
return pj_activesock_sendto(stun_sock->active_sock,
&stun_sock->int_send_key,
pkt, &size, 0, dst_addr, addr_len);
}
/* Send application data */
PJ_DEF(pj_status_t) pj_stun_sock_sendto( pj_stun_sock *stun_sock,
pj_ioqueue_op_key_t *send_key,
const void *pkt,
unsigned pkt_len,
unsigned flag,
const pj_sockaddr_t *dst_addr,
unsigned addr_len)
{
pj_ssize_t size;
pj_status_t status;
PJ_ASSERT_RETURN(stun_sock && pkt && dst_addr && addr_len, PJ_EINVAL);
pj_grp_lock_acquire(stun_sock->grp_lock);
if (!stun_sock->active_sock) {
/* We have been shutdown, but this callback may still get called
* by retransmit timer.
*/
pj_grp_lock_release(stun_sock->grp_lock);
return PJ_EINVALIDOP;
}
if (send_key==NULL)
send_key = &stun_sock->send_key;
size = pkt_len;
status = pj_activesock_sendto(stun_sock->active_sock, send_key,
pkt, &size, flag, dst_addr, addr_len);
pj_grp_lock_release(stun_sock->grp_lock);
return status;
}
/* This callback is called by the STUN session to send packet */
static pj_status_t sess_on_send_msg(pj_stun_session *sess,
void *token,
const void *pkt,
pj_size_t pkt_size,
const pj_sockaddr_t *dst_addr,
unsigned addr_len)
{
pj_stun_sock *stun_sock;
pj_ssize_t size;
pj_status_t status;
pj_bool_t is_stun = PJ_FALSE;
pj_bool_t is_tnl_data = PJ_FALSE;
stun_sock = (pj_stun_sock *) pj_stun_session_get_user_data(sess);
if (!stun_sock || !stun_sock->active_sock) {
/* We have been shutdown, but this callback may still get called
* by retransmit timer.
*/
return PJ_EINVALIDOP;
}
pj_assert(token==INTERNAL_MSG_TOKEN);
PJ_UNUSED_ARG(token);
/* Check that this is STUN message */
status = pj_stun_msg_check((const pj_uint8_t*)pkt, pkt_size,
/*PJ_STUN_IS_DATAGRAM | */PJ_STUN_CHECK_PACKET);
if (status == PJ_SUCCESS)
is_stun = PJ_TRUE;
else
is_tnl_data = (((pj_uint8_t*)pkt)[pkt_size] == 1);
size = pkt_size;
if(is_stun || !is_tnl_data) {
pj_ioqueue_op_key_t *op_key = (pj_ioqueue_op_key_t*)pj_mem_alloc(sizeof(pj_ioqueue_op_key_t));
pj_ioqueue_op_key_init(op_key, sizeof(pj_ioqueue_op_key_t));
return pj_activesock_sendto(stun_sock->active_sock, op_key,
pkt, &size, PJ_IOQUEUE_URGENT_DATA, dst_addr, addr_len);
} else {
return pj_activesock_sendto(stun_sock->active_sock, &stun_sock->send_key,
pkt, &size, 0, dst_addr, addr_len);
}
}
static pj_bool_t stun_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_stun_msg *req, *resp = NULL;
pj_pool_t *pool;
pj_ssize_t len;
if (status != PJ_SUCCESS)
return PJ_TRUE;
test_srv = (test_server*) pj_activesock_get_user_data(asock);
pool = pj_pool_create(test_srv->stun_cfg->pf, NULL, 512, 512, NULL);
status = pj_stun_msg_decode(pool, (pj_uint8_t*)data, size,
PJ_STUN_IS_DATAGRAM | PJ_STUN_CHECK_PACKET,
&req, NULL, NULL);
if (status != PJ_SUCCESS)
goto on_return;
if (req->hdr.type != PJ_STUN_BINDING_REQUEST) {
pj_stun_msg_create_response(pool, req, PJ_STUN_SC_BAD_REQUEST,
NULL, &resp);
goto send_pkt;
}
status = pj_stun_msg_create_response(pool, req, 0, NULL, &resp);
if (status != PJ_SUCCESS)
goto on_return;
pj_stun_msg_add_sockaddr_attr(pool, resp, PJ_STUN_ATTR_XOR_MAPPED_ADDR,
PJ_TRUE, src_addr, addr_len);
send_pkt:
status = pj_stun_msg_encode(resp, (pj_uint8_t*)data, MAX_STUN_PKT,
0, NULL, &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;
}
/* Send application data */
PJ_DEF(pj_status_t) pj_stun_sock_sendto( pj_stun_sock *stun_sock,
pj_ioqueue_op_key_t *send_key,
const void *pkt,
unsigned pkt_len,
unsigned flag,
const pj_sockaddr_t *dst_addr,
unsigned addr_len)
{
pj_ssize_t size;
PJ_ASSERT_RETURN(stun_sock && pkt && dst_addr && addr_len, PJ_EINVAL);
if (send_key==NULL)
send_key = &stun_sock->send_key;
size = pkt_len;
return pj_activesock_sendto(stun_sock->active_sock, send_key,
pkt, &size, flag, dst_addr, addr_len);
}
/* This callback is called by the STUN session to send packet */
static pj_status_t sess_on_send_msg(pj_stun_session *sess,
void *token,
const void *pkt,
pj_size_t pkt_size,
const pj_sockaddr_t *dst_addr,
unsigned addr_len)
{
pj_stun_sock *stun_sock;
pj_ssize_t size;
stun_sock = (pj_stun_sock *) pj_stun_session_get_user_data(sess);
pj_assert(token==INTERNAL_MSG_TOKEN);
PJ_UNUSED_ARG(token);
size = pkt_size;
return pj_activesock_sendto(stun_sock->active_sock,
&stun_sock->int_send_key,
pkt, &size, 0, dst_addr, addr_len);
}
static pj_bool_t udp_echo_srv_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)
{
struct udp_echo_srv *srv;
pj_ssize_t sent;
srv = (struct udp_echo_srv*) pj_activesock_get_user_data(asock);
if (status != PJ_SUCCESS) {
srv->status = status;
srv->rx_err_cnt++;
udp_echo_err("recvfrom() callback", status);
return PJ_TRUE;
}
srv->rx_cnt++;
/* Send back if echo is enabled */
if (srv->echo_enabled) {
sent = size;
srv->status = pj_activesock_sendto(asock, &srv->send_key, data,
&sent, 0,
src_addr, addr_len);
if (srv->status != PJ_SUCCESS) {
srv->tx_err_cnt++;
udp_echo_err("sendto()", status);
}
}
return PJ_TRUE;
}
/* On received data from peer */
static pj_bool_t alloc_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)
{
turn_allocation *alloc;
pj_stun_xor_peer_addr_attr *pa;
pj_stun_data_attr *da;
char peer_info[PJ_INET6_ADDRSTRLEN+10];
char client_info[PJ_INET6_ADDRSTRLEN+10];
pj_uint8_t buffer[1500];
pj_ssize_t sent;
unsigned i;
if (status != PJ_SUCCESS)
return PJ_TRUE;
alloc = (turn_allocation*) pj_activesock_get_user_data(asock);
pj_sockaddr_print(&alloc->client_addr, client_info, sizeof(client_info), 3);
pj_sockaddr_print(src_addr, peer_info, sizeof(peer_info), 3);
/* Check that this peer has a permission */
for (i=0; i<alloc->perm_cnt; ++i) {
if (pj_sockaddr_get_len(&alloc->perm[i]) == (unsigned)addr_len &&
pj_memcmp(pj_sockaddr_get_addr(&alloc->perm[i]),
pj_sockaddr_get_addr(src_addr),
addr_len) == 0)
{
break;
}
}
if (i==alloc->perm_cnt) {
PJ_LOG(5,("", "Client %s received %d bytes unauthorized data from peer %s",
client_info, size, peer_info));
if (alloc->perm_cnt == 0)
PJ_LOG(5,("", "Client %s has no permission", client_info));
return PJ_TRUE;
}
/* Format a Data indication */
pa = (pj_stun_xor_peer_addr_attr*)
pj_stun_msg_find_attr(alloc->data_ind, PJ_STUN_ATTR_XOR_PEER_ADDR, 0);
da = (pj_stun_data_attr*)
pj_stun_msg_find_attr(alloc->data_ind, PJ_STUN_ATTR_DATA, 0);
pj_assert(pa && da);
pj_sockaddr_cp(&pa->sockaddr, src_addr);
da->data = (pj_uint8_t*)data;
da->length = size;
/* Encode Data indication */
status = pj_stun_msg_encode(alloc->data_ind, buffer, sizeof(buffer), 0,
NULL, &size);
if (status != PJ_SUCCESS)
return PJ_TRUE;
/* Send */
sent = size;
PJ_LOG(5,("", "Forwarding %d bytes data from peer %s to client %s",
sent, peer_info, client_info));
pj_activesock_sendto(alloc->test_srv->turn_sock, &alloc->send_key, buffer,
&sent, 0, &alloc->client_addr,
pj_sockaddr_get_len(&alloc->client_addr));
return PJ_TRUE;
}
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;
}
static pj_bool_t srv_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)
{
struct stun_srv *srv;
pj_ssize_t sent;
srv = (struct stun_srv*) pj_activesock_get_user_data(asock);
/* Ignore error */
if (status != PJ_SUCCESS)
return PJ_TRUE;
++srv->rx_cnt;
/* Ignore if we're not responding */
if (srv->flag & RESPOND_STUN) {
pj_pool_t *pool;
pj_stun_msg *req_msg, *res_msg;
pool = pj_pool_create(mem, "stunsrv", 512, 512, NULL);
/* Parse request */
status = pj_stun_msg_decode(pool, (pj_uint8_t*)data, size,
PJ_STUN_IS_DATAGRAM | PJ_STUN_CHECK_PACKET,
&req_msg, NULL, NULL);
if (status != PJ_SUCCESS) {
app_perror(" pj_stun_msg_decode()", status);
pj_pool_release(pool);
return PJ_TRUE;
}
/* Create response */
status = pj_stun_msg_create(pool, PJ_STUN_BINDING_RESPONSE, PJ_STUN_MAGIC,
req_msg->hdr.tsx_id, &res_msg);
if (status != PJ_SUCCESS) {
app_perror(" pj_stun_msg_create()", status);
pj_pool_release(pool);
return PJ_TRUE;
}
/* Add MAPPED-ADDRESS or XOR-MAPPED-ADDRESS (or don't add) */
if (srv->flag & WITH_MAPPED) {
pj_sockaddr_in addr;
pj_sockaddr_in_init(&addr, &srv->ip_to_send, srv->port_to_send);
pj_stun_msg_add_sockaddr_attr(pool, res_msg, PJ_STUN_ATTR_MAPPED_ADDR,
PJ_FALSE, &addr, sizeof(addr));
} else if (srv->flag & WITH_XOR_MAPPED) {
pj_sockaddr_in addr;
pj_sockaddr_in_init(&addr, &srv->ip_to_send, srv->port_to_send);
pj_stun_msg_add_sockaddr_attr(pool, res_msg,
PJ_STUN_ATTR_XOR_MAPPED_ADDR,
PJ_TRUE, &addr, sizeof(addr));
}
/* Encode */
status = pj_stun_msg_encode(res_msg, (pj_uint8_t*)data, 100, 0,
NULL, &size);
if (status != PJ_SUCCESS) {
app_perror(" pj_stun_msg_encode()", status);
pj_pool_release(pool);
return PJ_TRUE;
}
/* Send back */
sent = size;
pj_activesock_sendto(asock, &srv->send_key, data, &sent, 0,
src_addr, addr_len);
pj_pool_release(pool);
} else if (srv->flag & ECHO) {
/* Send back */
sent = size;
pj_activesock_sendto(asock, &srv->send_key, data, &sent, 0,
src_addr, addr_len);
}
return PJ_TRUE;
}
/*******************************************************************
* UDP ping pong test (send packet back and forth between two UDP echo
* servers.
*/
static int udp_ping_pong_test(void)
{
pj_ioqueue_t *ioqueue = NULL;
pj_pool_t *pool = NULL;
struct udp_echo_srv *srv1=NULL, *srv2=NULL;
pj_bool_t need_send = PJ_TRUE;
unsigned data = 0;
int count, ret;
pj_status_t status;
pool = pj_pool_create(mem, "pingpong", 512, 512, NULL);
if (!pool)
return -10;
status = pj_ioqueue_create(pool, 4, &ioqueue);
if (status != PJ_SUCCESS) {
ret = -20;
udp_echo_err("pj_ioqueue_create()", status);
goto on_return;
}
status = udp_echo_srv_create(pool, ioqueue, PJ_TRUE, &srv1);
if (status != PJ_SUCCESS) {
ret = -30;
goto on_return;
}
status = udp_echo_srv_create(pool, ioqueue, PJ_TRUE, &srv2);
if (status != PJ_SUCCESS) {
ret = -40;
goto on_return;
}
/* initiate the first send */
for (count=0; count<1000; ++count) {
unsigned last_rx1, last_rx2;
unsigned i;
if (need_send) {
pj_str_t loopback;
pj_sockaddr_in addr;
pj_ssize_t sent;
++data;
sent = sizeof(data);
loopback = pj_str("127.0.0.1");
pj_sockaddr_in_init(&addr, &loopback, srv2->port);
status = pj_activesock_sendto(srv1->asock, &srv1->send_key,
&data, &sent, 0,
&addr, sizeof(addr));
if (status != PJ_SUCCESS && status != PJ_EPENDING) {
ret = -50;
udp_echo_err("sendto()", status);
goto on_return;
}
need_send = PJ_FALSE;
}
last_rx1 = srv1->rx_cnt;
last_rx2 = srv2->rx_cnt;
for (i=0; i<10 && last_rx1 == srv1->rx_cnt && last_rx2 == srv2->rx_cnt; ++i) {
pj_time_val delay = {0, 10};
#ifdef PJ_SYMBIAN
pj_symbianos_poll(-1, 100);
#else
pj_ioqueue_poll(ioqueue, &delay);
#endif
}
if (srv1->rx_err_cnt+srv1->tx_err_cnt != 0 ||
srv2->rx_err_cnt+srv2->tx_err_cnt != 0)
{
/* Got error */
ret = -60;
goto on_return;
}
if (last_rx1 == srv1->rx_cnt && last_rx2 == srv2->rx_cnt) {
/* Packet lost */
ret = -70;
udp_echo_err("packets have been lost", PJ_ETIMEDOUT);
goto on_return;
}
}
ret = 0;
on_return:
if (srv2)
udp_echo_srv_destroy(srv2);
if (srv1)
udp_echo_srv_destroy(srv1);
if (ioqueue)
pj_ioqueue_destroy(ioqueue);
if (pool)
pj_pool_release(pool);
return ret;
}
