static int client_thread(void *unused)
{
PJ_UNUSED_ARG(unused);
while (!client->quit) {
pj_fd_set_t readset;
pj_time_val delay = {0, 10};
/* Also poll the timer heap */
pj_timer_heap_poll(stun_cfg.timer_heap, NULL);
/* Poll client socket */
PJ_FD_ZERO(&readset);
PJ_FD_SET(client->sock, &readset);
if (pj_sock_select((int)client->sock+1, &readset, NULL, NULL, &delay)==1
&& PJ_FD_ISSET(client->sock, &readset))
{
char pkt[1000];
pj_ssize_t len;
pj_status_t status;
pj_sockaddr src_addr;
int src_addr_len;
len = sizeof(pkt);
src_addr_len = sizeof(src_addr);
status = pj_sock_recvfrom(client->sock, pkt, &len, 0, &src_addr, &src_addr_len);
if (status != PJ_SUCCESS)
continue;
/* Increment client's receive count */
client->recv_count++;
/* Only pass to client if we allow to respond */
if (!client->responding)
continue;
pj_stun_session_on_rx_pkt(client->sess, pkt, len,
PJ_STUN_CHECK_PACKET | PJ_STUN_IS_DATAGRAM,
NULL, NULL, &src_addr, src_addr_len);
}
}
return 0;
}
static int server_thread(void *unused)
{
PJ_UNUSED_ARG(unused);
PJ_LOG(5,("", " server thread started"));
while (!server->quit) {
pj_fd_set_t readset;
pj_time_val delay = {0, 10};
PJ_FD_ZERO(&readset);
PJ_FD_SET(server->sock, &readset);
if (pj_sock_select((int)server->sock+1, &readset, NULL, NULL, &delay)==1
&& PJ_FD_ISSET(server->sock, &readset))
{
char pkt[1000];
pj_ssize_t len;
pj_status_t status;
pj_sockaddr src_addr;
int src_addr_len;
len = sizeof(pkt);
src_addr_len = sizeof(src_addr);
status = pj_sock_recvfrom(server->sock, pkt, &len, 0, &src_addr, &src_addr_len);
if (status != PJ_SUCCESS)
continue;
/* Increment server's receive count */
server->recv_count++;
/* Only pass to server if we allow to respond */
if (!server->responding)
continue;
pj_stun_session_on_rx_pkt(server->sess, pkt, len,
PJ_STUN_CHECK_PACKET | PJ_STUN_IS_DATAGRAM,
NULL, NULL, &src_addr, src_addr_len);
}
}
return 0;
}
/*
int response_client_send(response_client_t *uclient, response_request_t *request) {
int ret;
long nbytes;
char buff[UCLIENT_BUFSIZE];
response_build_request(buff, sizeof(buff), request);
nbytes = strlen(buff);
ret = pj_sock_sendto(uclient->fd, buff, &nbytes, 0, (const pj_sockaddr_t *)uclient->connect_data, sizeof(pj_sockaddr_in));
if(ret != 0) {
PERROR_IF_TRUE(1, "Error in sending data\n");
return -1;
}
return nbytes;
}
int response_client_send_ex(response_client_t *uclient, response_request_t *request) {
int ret;
long nbytes;
char buff[UCLIENT_BUFSIZE];
char cipher[UCLIENT_BUFSIZE];
char message[UCLIENT_BUFSIZE];
uint32_t timestamp;
char sts[32];
char *passphrase = uclient->passphrase_f();
char otp[100];
char *id = uclient->id_f();
char challenge[32];
int len = 32;
int len1 = 32;
lvc_t lvc;
timestamp = get_ts();
len1 = ts2str(timestamp, sts);
generate_otp(otp, passphrase, sts);
do_encrypt(challenge, &len, sts, len1, otp);
lvc_init(&lvc, message, UCLIENT_BUFSIZE);
fprintf(stdout, "lvc_pack id:%s\n", id);
lvc_pack( &lvc, strlen(id), id );
fprintf(stdout, "lvc_pack ts:%u\n", timestamp);
lvc_pack( &lvc, sizeof(uint32_t), (char *)×tamp );
fprintf(stdout, "lvc_pack challenge:%d\n", len);
lvc_pack( &lvc, len, challenge );
response_build_request(buff, sizeof(buff), request);
nbytes = strlen(buff);
fprintf(stdout, "Message to send:%.*s\n", nbytes, buff);
len = sizeof(cipher);
do_encrypt(cipher, &len, buff, nbytes, otp);
lvc_pack( &lvc, len, cipher );
lvc_pack_finish(&lvc);
nbytes = lvc.len;
ret = pj_sock_sendto(uclient->fd, lvc.data, &nbytes, 0, (const pj_sockaddr_t *)uclient->connect_data, sizeof(pj_sockaddr_in));
//ret = pj_sock_sendto(uclient->fd, buff, &nbytes, 0, (const pj_sockaddr_t *)uclient->connect_data, sizeof(pj_sockaddr_in));
if(ret != 0) {
PERROR_IF_TRUE(1, "Error in sending data\n");
return -1;
}
return nbytes;
}
*/
void response_client_recv(response_client_t *uclient) {
char buff[UCLIENT_BUFSIZE];
long nbytes = UCLIENT_BUFSIZE;
response_request_t req;
int len = sizeof(pj_sockaddr_in);
pj_sock_recvfrom(uclient->fd, (void *)buff, &nbytes, 0, (pj_sockaddr_t *)uclient->connect_data, &len);
buff[nbytes] = '\0';
printf("buf: %s\n", buff);
response_parse_request(buff, sizeof(buff), &req);
#if 1
if (uclient->on_response_f != NULL) {
uclient->on_response_f(uclient, &req);
}
#endif
}
static int worker_thread(void *arg)
{
pj_sock_t sock = (pj_sock_t)arg;
char buf[512];
pj_status_t last_recv_err = PJ_SUCCESS, last_write_err = PJ_SUCCESS;
while (!thread_quit_flag) {
pj_ssize_t len;
pj_status_t rc;
pj_sockaddr_in addr;
int addrlen;
len = sizeof(buf);
addrlen = sizeof(addr);
rc = pj_sock_recvfrom(sock, buf, &len, 0, &addr, &addrlen);
if (rc != 0) {
if (rc != last_recv_err) {
app_perror("...recv error", rc);
last_recv_err = rc;
}
continue;
}
pj_atomic_add(total_bytes, (pj_atomic_value_t)len);
rc = pj_sock_sendto(sock, buf, &len, 0, &addr, addrlen);
if (rc != PJ_SUCCESS) {
if (rc != last_write_err) {
app_perror("...send error", rc);
last_write_err = rc;
}
continue;
}
}
return 0;
}
static int server_thread_proc(void *p)
{
struct stun_test_session *test_sess = (struct stun_test_session*)p;
pj_pool_t *pool;
pj_status_t status;
PJ_LOG(4,(THIS_FILE, "Server thread running"));
pool = pj_pool_create(test_sess->stun_cfg.pf, "server", 512, 512, NULL);
while (!test_sess->thread_quit_flag) {
pj_time_val timeout = {0, 10};
pj_fd_set_t rdset;
int n;
/* Serve client */
PJ_FD_ZERO(&rdset);
PJ_FD_SET(test_sess->server_sock, &rdset);
n = pj_sock_select(test_sess->server_sock+1, &rdset,
NULL, NULL, &timeout);
if (n==1 && PJ_FD_ISSET(test_sess->server_sock, &rdset)) {
pj_uint8_t pkt[512];
pj_ssize_t pkt_len;
pj_size_t res_len;
pj_sockaddr client_addr;
int addr_len;
pj_stun_msg *stun_req, *stun_res;
pj_pool_reset(pool);
/* Got query */
pkt_len = sizeof(pkt);
addr_len = sizeof(client_addr);
status = pj_sock_recvfrom(test_sess->server_sock, pkt, &pkt_len,
0, &client_addr, &addr_len);
if (status != PJ_SUCCESS) {
continue;
}
status = pj_stun_msg_decode(pool, pkt, pkt_len,
PJ_STUN_IS_DATAGRAM,
&stun_req, NULL, NULL);
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status, "STUN request decode error"));
continue;
}
status = pj_stun_msg_create_response(pool, stun_req,
PJ_STUN_SC_BAD_REQUEST, NULL,
&stun_res);
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status, "STUN create response error"));
continue;
}
status = pj_stun_msg_encode(stun_res, pkt, sizeof(pkt), 0,
NULL, &res_len);
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status, "STUN encode error"));
continue;
}
/* Ignore request */
if (test_sess->param.server_drop_request)
continue;
/* Wait for signal to continue */
if (test_sess->param.server_wait_for_event)
pj_event_wait(test_sess->server_event);
pkt_len = res_len;
pj_sock_sendto(test_sess->server_sock, pkt, &pkt_len, 0,
&client_addr, pj_sockaddr_get_len(&client_addr));
}
}
pj_pool_release(pool);
PJ_LOG(4,(THIS_FILE, "Server thread quitting"));
return 0;
}
PJ_DEF(pj_status_t) pjstun_get_mapped_addr( pj_pool_factory *pf,
int sock_cnt, pj_sock_t sock[],
const pj_str_t *srv1, int port1,
const pj_str_t *srv2, int port2,
pj_sockaddr_in mapped_addr[])
{
unsigned srv_cnt;
pj_sockaddr_in srv_addr[2];
int i, j, send_cnt = 0, nfds;
pj_pool_t *pool;
struct query_rec {
struct {
pj_uint32_t mapped_addr;
pj_uint32_t mapped_port;
} srv[2];
} *rec;
void *out_msg;
pj_size_t out_msg_len;
int wait_resp = 0;
pj_status_t status;
PJ_CHECK_STACK();
TRACE_((THIS_FILE, "Entering pjstun_get_mapped_addr()"));
/* Create pool. */
pool = pj_pool_create(pf, "stun%p", 400, 400, NULL);
if (!pool)
return PJ_ENOMEM;
/* Allocate client records */
rec = (struct query_rec*) pj_pool_calloc(pool, sock_cnt, sizeof(*rec));
if (!rec) {
status = PJ_ENOMEM;
goto on_error;
}
TRACE_((THIS_FILE, " Memory allocated."));
/* Create the outgoing BIND REQUEST message template */
status = pjstun_create_bind_req( pool, &out_msg, &out_msg_len,
pj_rand(), pj_rand());
if (status != PJ_SUCCESS)
goto on_error;
TRACE_((THIS_FILE, " Binding request created."));
/* Resolve servers. */
status = pj_sockaddr_in_init(&srv_addr[0], srv1, (pj_uint16_t)port1);
if (status != PJ_SUCCESS)
goto on_error;
srv_cnt = 1;
if (srv2 && port2) {
status = pj_sockaddr_in_init(&srv_addr[1], srv2, (pj_uint16_t)port2);
if (status != PJ_SUCCESS)
goto on_error;
if (srv_addr[1].sin_addr.s_addr != srv_addr[0].sin_addr.s_addr &&
srv_addr[1].sin_port != srv_addr[0].sin_port)
{
srv_cnt++;
}
}
TRACE_((THIS_FILE, " Server initialized, using %d server(s)", srv_cnt));
/* Init mapped addresses to zero */
pj_memset(mapped_addr, 0, sock_cnt * sizeof(pj_sockaddr_in));
/* We need these many responses */
wait_resp = sock_cnt * srv_cnt;
TRACE_((THIS_FILE, " Done initialization."));
#if defined(PJ_SELECT_NEEDS_NFDS) && PJ_SELECT_NEEDS_NFDS!=0
nfds = -1;
for (i=0; i<sock_cnt; ++i) {
if (sock[i] > nfds) {
nfds = sock[i];
}
}
#else
nfds = FD_SETSIZE-1;
#endif
/* Main retransmission loop. */
for (send_cnt=0; send_cnt<MAX_REQUEST; ++send_cnt) {
pj_time_val next_tx, now;
pj_fd_set_t r;
int select_rc;
PJ_FD_ZERO(&r);
/* Send messages to servers that has not given us response. */
for (i=0; i<sock_cnt && status==PJ_SUCCESS; ++i) {
for (j=0; j<srv_cnt && status==PJ_SUCCESS; ++j) {
pjstun_msg_hdr *msg_hdr = (pjstun_msg_hdr*) out_msg;
pj_ssize_t sent_len;
if (rec[i].srv[j].mapped_port != 0)
continue;
/* Modify message so that we can distinguish response. */
msg_hdr->tsx[2] = pj_htonl(i);
msg_hdr->tsx[3] = pj_htonl(j);
/* Send! */
sent_len = out_msg_len;
status = pj_sock_sendto(sock[i], out_msg, &sent_len, 0,
(pj_sockaddr_t*)&srv_addr[j],
sizeof(pj_sockaddr_in));
}
}
/* All requests sent.
* The loop below will wait for responses until all responses have
* been received (i.e. wait_resp==0) or timeout occurs, which then
* we'll go to the next retransmission iteration.
*/
TRACE_((THIS_FILE, " Request(s) sent, counter=%d", send_cnt));
/* Calculate time of next retransmission. */
pj_gettimeofday(&next_tx);
next_tx.sec += (stun_timer[send_cnt]/1000);
next_tx.msec += (stun_timer[send_cnt]%1000);
pj_time_val_normalize(&next_tx);
for (pj_gettimeofday(&now), select_rc=1;
status==PJ_SUCCESS && select_rc>=1 && wait_resp>0
&& PJ_TIME_VAL_LT(now, next_tx);
pj_gettimeofday(&now))
{
pj_time_val timeout;
timeout = next_tx;
PJ_TIME_VAL_SUB(timeout, now);
for (i=0; i<sock_cnt; ++i) {
PJ_FD_SET(sock[i], &r);
}
select_rc = pj_sock_select(nfds+1, &r, NULL, NULL, &timeout);
TRACE_((THIS_FILE, " select() rc=%d", select_rc));
if (select_rc < 1)
continue;
for (i=0; i<sock_cnt; ++i) {
int sock_idx, srv_idx;
pj_ssize_t len;
pjstun_msg msg;
pj_sockaddr_in addr;
int addrlen = sizeof(addr);
pjstun_mapped_addr_attr *attr;
char recv_buf[128];
if (!PJ_FD_ISSET(sock[i], &r))
continue;
len = sizeof(recv_buf);
status = pj_sock_recvfrom( sock[i], recv_buf,
&len, 0,
(pj_sockaddr_t*)&addr,
&addrlen);
if (status != PJ_SUCCESS) {
char errmsg[PJ_ERR_MSG_SIZE];
PJ_LOG(4,(THIS_FILE, "recvfrom() error ignored: %s",
pj_strerror(status, errmsg,sizeof(errmsg)).ptr));
/* Ignore non-PJ_SUCCESS status.
* It possible that other SIP entity is currently
* sending SIP request to us, and because SIP message
* is larger than STUN, we could get EMSGSIZE when
* we call recvfrom().
*/
status = PJ_SUCCESS;
continue;
}
status = pjstun_parse_msg(recv_buf, len, &msg);
if (status != PJ_SUCCESS) {
char errmsg[PJ_ERR_MSG_SIZE];
PJ_LOG(4,(THIS_FILE, "STUN parsing error ignored: %s",
pj_strerror(status, errmsg,sizeof(errmsg)).ptr));
/* Also ignore non-successful parsing. This may not
* be STUN response at all. See the comment above.
*/
status = PJ_SUCCESS;
continue;
}
sock_idx = pj_ntohl(msg.hdr->tsx[2]);
srv_idx = pj_ntohl(msg.hdr->tsx[3]);
if (sock_idx<0 || sock_idx>=sock_cnt || sock_idx!=i ||
srv_idx<0 || srv_idx>=2)
{
status = PJLIB_UTIL_ESTUNININDEX;
continue;
}
if (pj_ntohs(msg.hdr->type) != PJSTUN_BINDING_RESPONSE) {
status = PJLIB_UTIL_ESTUNNOBINDRES;
continue;
}
if (rec[sock_idx].srv[srv_idx].mapped_port != 0) {
/* Already got response */
continue;
}
/* From this part, we consider the packet as a valid STUN
* response for our request.
*/
--wait_resp;
if (pjstun_msg_find_attr(&msg, PJSTUN_ATTR_ERROR_CODE) != NULL) {
status = PJLIB_UTIL_ESTUNRECVERRATTR;
continue;
}
attr = (pjstun_mapped_addr_attr*)
pjstun_msg_find_attr(&msg, PJSTUN_ATTR_MAPPED_ADDR);
if (!attr) {
attr = (pjstun_mapped_addr_attr*)
pjstun_msg_find_attr(&msg, PJSTUN_ATTR_XOR_MAPPED_ADDR);
if (!attr || attr->family != 1) {
status = PJLIB_UTIL_ESTUNNOMAP;
continue;
}
}
rec[sock_idx].srv[srv_idx].mapped_addr = attr->addr;
rec[sock_idx].srv[srv_idx].mapped_port = attr->port;
if (pj_ntohs(attr->hdr.type) == PJSTUN_ATTR_XOR_MAPPED_ADDR) {
rec[sock_idx].srv[srv_idx].mapped_addr ^= pj_htonl(STUN_MAGIC);
rec[sock_idx].srv[srv_idx].mapped_port ^= pj_htons(STUN_MAGIC >> 16);
}
}
}
/* The best scenario is if all requests have been replied.
* Then we don't need to go to the next retransmission iteration.
*/
if (wait_resp <= 0)
break;
}
static int send_recv_test(int sock_type,
pj_sock_t ss, pj_sock_t cs,
pj_sockaddr_in *dstaddr, pj_sockaddr_in *srcaddr,
int addrlen)
{
enum { DATA_LEN = 16 };
char senddata[DATA_LEN+4], recvdata[DATA_LEN+4];
pj_ssize_t sent, received, total_received;
pj_status_t rc;
TRACE_(("test", "....create_random_string()"));
pj_create_random_string(senddata, DATA_LEN);
senddata[DATA_LEN-1] = '\0';
/*
* Test send/recv small data.
*/
TRACE_(("test", "....sendto()"));
if (dstaddr) {
sent = DATA_LEN;
rc = pj_sock_sendto(cs, senddata, &sent, 0, dstaddr, addrlen);
if (rc != PJ_SUCCESS || sent != DATA_LEN) {
app_perror("...sendto error", rc);
rc = -140; goto on_error;
}
} else {
sent = DATA_LEN;
rc = pj_sock_send(cs, senddata, &sent, 0);
if (rc != PJ_SUCCESS || sent != DATA_LEN) {
app_perror("...send error", rc);
rc = -145; goto on_error;
}
}
TRACE_(("test", "....recv()"));
if (srcaddr) {
pj_sockaddr_in addr;
int srclen = sizeof(addr);
pj_bzero(&addr, sizeof(addr));
received = DATA_LEN;
rc = pj_sock_recvfrom(ss, recvdata, &received, 0, &addr, &srclen);
if (rc != PJ_SUCCESS || received != DATA_LEN) {
app_perror("...recvfrom error", rc);
rc = -150; goto on_error;
}
if (srclen != addrlen)
return -151;
if (pj_sockaddr_cmp(&addr, srcaddr) != 0) {
char srcaddr_str[32], addr_str[32];
strcpy(srcaddr_str, pj_inet_ntoa(srcaddr->sin_addr));
strcpy(addr_str, pj_inet_ntoa(addr.sin_addr));
PJ_LOG(3,("test", "...error: src address mismatch (original=%s, "
"recvfrom addr=%s)",
srcaddr_str, addr_str));
return -152;
}
} else {
/* Repeat recv() until all data is received.
* This applies only for non-UDP of course, since for UDP
* we would expect all data to be received in one packet.
*/
total_received = 0;
do {
received = DATA_LEN-total_received;
rc = pj_sock_recv(ss, recvdata+total_received, &received, 0);
if (rc != PJ_SUCCESS) {
app_perror("...recv error", rc);
rc = -155; goto on_error;
}
if (received <= 0) {
PJ_LOG(3,("", "...error: socket has closed! (received=%d)",
received));
rc = -156; goto on_error;
}
if (received != DATA_LEN-total_received) {
if (sock_type != pj_SOCK_STREAM()) {
PJ_LOG(3,("", "...error: expecting %u bytes, got %u bytes",
DATA_LEN-total_received, received));
rc = -157; goto on_error;
}
}
total_received += received;
} while (total_received < DATA_LEN);
}
TRACE_(("test", "....memcmp()"));
if (pj_memcmp(senddata, recvdata, DATA_LEN) != 0) {
PJ_LOG(3,("","...error: received data mismatch "
"(got:'%s' expecting:'%s'",
recvdata, senddata));
rc = -160; goto on_error;
}
/*
* Test send/recv big data.
*/
TRACE_(("test", "....sendto()"));
if (dstaddr) {
sent = BIG_DATA_LEN;
rc = pj_sock_sendto(cs, bigdata, &sent, 0, dstaddr, addrlen);
if (rc != PJ_SUCCESS || sent != BIG_DATA_LEN) {
app_perror("...sendto error", rc);
rc = -161; goto on_error;
}
} else {
sent = BIG_DATA_LEN;
rc = pj_sock_send(cs, bigdata, &sent, 0);
if (rc != PJ_SUCCESS || sent != BIG_DATA_LEN) {
app_perror("...send error", rc);
rc = -165; goto on_error;
}
}
TRACE_(("test", "....recv()"));
/* Repeat recv() until all data is received.
* This applies only for non-UDP of course, since for UDP
* we would expect all data to be received in one packet.
*/
total_received = 0;
do {
received = BIG_DATA_LEN-total_received;
rc = pj_sock_recv(ss, bigbuffer+total_received, &received, 0);
if (rc != PJ_SUCCESS) {
app_perror("...recv error", rc);
rc = -170; goto on_error;
}
if (received <= 0) {
PJ_LOG(3,("", "...error: socket has closed! (received=%d)",
received));
rc = -173; goto on_error;
}
if (received != BIG_DATA_LEN-total_received) {
if (sock_type != pj_SOCK_STREAM()) {
PJ_LOG(3,("", "...error: expecting %u bytes, got %u bytes",
BIG_DATA_LEN-total_received, received));
rc = -176; goto on_error;
}
}
total_received += received;
} while (total_received < BIG_DATA_LEN);
TRACE_(("test", "....memcmp()"));
if (pj_memcmp(bigdata, bigbuffer, BIG_DATA_LEN) != 0) {
PJ_LOG(3,("", "...error: received data has been altered!"));
rc = -180; goto on_error;
}
rc = 0;
on_error:
return rc;
}
/*
* pj_ioqueue_recvfrom()
*
* Start asynchronous recvfrom() from the socket.
*/
PJ_DEF(pj_status_t) pj_ioqueue_recvfrom( pj_ioqueue_key_t *key,
pj_ioqueue_op_key_t *op_key,
void *buffer,
pj_ssize_t *length,
unsigned flags,
pj_sockaddr_t *addr,
int *addrlen)
{
struct read_operation *read_op;
PJ_ASSERT_RETURN(key && op_key && buffer && length, PJ_EINVAL);
PJ_CHECK_STACK();
/* Check if key is closing. */
if (IS_CLOSING(key))
return PJ_ECANCELLED;
read_op = (struct read_operation*)op_key;
read_op->op = PJ_IOQUEUE_OP_NONE;
/* Try to see if there's data immediately available.
*/
if ((flags & PJ_IOQUEUE_ALWAYS_ASYNC) == 0) {
pj_status_t status;
pj_ssize_t size;
size = *length;
status = pj_sock_recvfrom(key->fd, buffer, &size, flags,
addr, addrlen);
if (status == PJ_SUCCESS) {
/* Yes! Data is available! */
*length = size;
return PJ_SUCCESS;
} else {
/* If error is not EWOULDBLOCK (or EAGAIN on Linux), report
* the error to caller.
*/
if (status != PJ_STATUS_FROM_OS(PJ_BLOCKING_ERROR_VAL))
return status;
}
}
flags &= ~(PJ_IOQUEUE_ALWAYS_ASYNC);
/*
* No data is immediately available.
* Must schedule asynchronous operation to the ioqueue.
*/
read_op->op = PJ_IOQUEUE_OP_RECV_FROM;
read_op->buf = buffer;
read_op->size = *length;
read_op->flags = flags;
read_op->rmt_addr = addr;
read_op->rmt_addrlen = addrlen;
pj_mutex_lock(key->mutex);
pj_list_insert_before(&key->read_list, read_op);
ioqueue_add_to_set(key->ioqueue, key, READABLE_EVENT);
pj_mutex_unlock(key->mutex);
return PJ_EPENDING;
}
void ioqueue_dispatch_read_event( pj_ioqueue_t *ioqueue, pj_ioqueue_key_t *h )
{
pj_status_t rc;
/* Lock the key. */
pj_mutex_lock(h->mutex);
if (IS_CLOSING(h)) {
pj_mutex_unlock(h->mutex);
return;
}
# if PJ_HAS_TCP
if (!pj_list_empty(&h->accept_list)) {
struct accept_operation *accept_op;
pj_bool_t has_lock;
/* Get one accept operation from the list. */
accept_op = h->accept_list.next;
pj_list_erase(accept_op);
accept_op->op = PJ_IOQUEUE_OP_NONE;
/* Clear bit in fdset if there is no more pending accept */
if (pj_list_empty(&h->accept_list))
ioqueue_remove_from_set(ioqueue, h, READABLE_EVENT);
rc=pj_sock_accept(h->fd, accept_op->accept_fd,
accept_op->rmt_addr, accept_op->addrlen);
if (rc==PJ_SUCCESS && accept_op->local_addr) {
rc = pj_sock_getsockname(*accept_op->accept_fd,
accept_op->local_addr,
accept_op->addrlen);
}
/* Unlock; from this point we don't need to hold key's mutex
* (unless concurrency is disabled, which in this case we should
* hold the mutex while calling the callback) */
if (h->allow_concurrent) {
/* concurrency may be changed while we're in the callback, so
* save it to a flag.
*/
has_lock = PJ_FALSE;
pj_mutex_unlock(h->mutex);
} else {
has_lock = PJ_TRUE;
}
/* Call callback. */
if (h->cb.on_accept_complete && !IS_CLOSING(h)) {
(*h->cb.on_accept_complete)(h,
(pj_ioqueue_op_key_t*)accept_op,
*accept_op->accept_fd, rc);
}
if (has_lock) {
pj_mutex_unlock(h->mutex);
}
}
else
# endif
if (key_has_pending_read(h)) {
struct read_operation *read_op;
pj_ssize_t bytes_read;
pj_bool_t has_lock;
/* Get one pending read operation from the list. */
read_op = h->read_list.next;
pj_list_erase(read_op);
/* Clear fdset if there is no pending read. */
if (pj_list_empty(&h->read_list))
ioqueue_remove_from_set(ioqueue, h, READABLE_EVENT);
bytes_read = read_op->size;
if ((read_op->op == PJ_IOQUEUE_OP_RECV_FROM)) {
read_op->op = PJ_IOQUEUE_OP_NONE;
rc = pj_sock_recvfrom(h->fd, read_op->buf, &bytes_read,
read_op->flags,
read_op->rmt_addr,
read_op->rmt_addrlen);
} else if ((read_op->op == PJ_IOQUEUE_OP_RECV)) {
read_op->op = PJ_IOQUEUE_OP_NONE;
rc = pj_sock_recv(h->fd, read_op->buf, &bytes_read,
read_op->flags);
} else {
pj_assert(read_op->op == PJ_IOQUEUE_OP_READ);
read_op->op = PJ_IOQUEUE_OP_NONE;
/*
* User has specified pj_ioqueue_read().
* On Win32, we should do ReadFile(). But because we got
* here because of select() anyway, user must have put a
* socket descriptor on h->fd, which in this case we can
* just call pj_sock_recv() instead of ReadFile().
* On Unix, user may put a file in h->fd, so we'll have
* to call read() here.
* This may not compile on systems which doesn't have
* read(). That's why we only specify PJ_LINUX here so
* that error is easier to catch.
*/
# if defined(PJ_WIN32) && PJ_WIN32 != 0 || \
defined(PJ_WIN32_WINCE) && PJ_WIN32_WINCE != 0
rc = pj_sock_recv(h->fd, read_op->buf, &bytes_read,
read_op->flags);
//rc = ReadFile((HANDLE)h->fd, read_op->buf, read_op->size,
// &bytes_read, NULL);
# elif (defined(PJ_HAS_UNISTD_H) && PJ_HAS_UNISTD_H != 0)
bytes_read = read(h->fd, read_op->buf, bytes_read);
rc = (bytes_read >= 0) ? PJ_SUCCESS : pj_get_os_error();
# elif defined(PJ_LINUX_KERNEL) && PJ_LINUX_KERNEL != 0
bytes_read = sys_read(h->fd, read_op->buf, bytes_read);
rc = (bytes_read >= 0) ? PJ_SUCCESS : -bytes_read;
# else
# error "Implement read() for this platform!"
# endif
}
if (rc != PJ_SUCCESS) {
# if defined(PJ_WIN32) && PJ_WIN32 != 0
/* On Win32, for UDP, WSAECONNRESET on the receive side
* indicates that previous sending has triggered ICMP Port
* Unreachable message.
* But we wouldn't know at this point which one of previous
* key that has triggered the error, since UDP socket can
* be shared!
* So we'll just ignore it!
*/
if (rc == PJ_STATUS_FROM_OS(WSAECONNRESET)) {
//PJ_LOG(4,(THIS_FILE,
// "Ignored ICMP port unreach. on key=%p", h));
}
# endif
/* In any case we would report this to caller. */
bytes_read = -rc;
}
/* Unlock; from this point we don't need to hold key's mutex
* (unless concurrency is disabled, which in this case we should
* hold the mutex while calling the callback) */
if (h->allow_concurrent) {
/* concurrency may be changed while we're in the callback, so
* save it to a flag.
*/
has_lock = PJ_FALSE;
pj_mutex_unlock(h->mutex);
} else {
has_lock = PJ_TRUE;
}
/* Call callback. */
if (h->cb.on_read_complete && !IS_CLOSING(h)) {
(*h->cb.on_read_complete)(h,
(pj_ioqueue_op_key_t*)read_op,
bytes_read);
}
if (has_lock) {
pj_mutex_unlock(h->mutex);
}
} else {
/*
* This is normal; execution may fall here when multiple threads
* are signalled for the same event, but only one thread eventually
* able to process the event.
*/
pj_mutex_unlock(h->mutex);
}
}
static int thread_proc(void *data) {
dupsock_t *p_dupsock = (dupsock_t *)data;
pj_thread_t *thread;
pj_thread_desc desc;
struct pj_time_val tv;
int ret;
pj_ssize_t ntemp;
int sock_len;
// pj_bzero(desc, sizeof(desc));
// CHECK(__FILE__, pj_thread_register("dupsock", desc, &thread));
PJ_FD_ZERO(&(p_dupsock->rfds));
PJ_FD_ZERO(&(p_dupsock->wfds));
PJ_FD_SET(*(p_dupsock->p_sock), &(p_dupsock->rfds));
tv.sec = 0;
tv.msec = 20;
// MAIN LOOP
p_dupsock->b_quit = 0;
while( (!p_dupsock->b_quit) || (p_dupsock->wait_cnt > 0) || (p_dupsock->to_send != NULL) ) {
if(p_dupsock->wait_cnt > 0) {
p_dupsock->wait_cnt--;
pj_event_pulse(p_dupsock->p_event);
}
pj_thread_sleep(10);
PJ_FD_ZERO(&(p_dupsock->rfds));
PJ_FD_ZERO(&(p_dupsock->wfds));
PJ_FD_SET(*(p_dupsock->p_sock), &(p_dupsock->rfds));
if(p_dupsock->to_send != NULL)
PJ_FD_SET(*(p_dupsock->p_sock), &(p_dupsock->wfds));
ret = pj_sock_select(*(p_dupsock->p_sock) + 1, &(p_dupsock->rfds), &(p_dupsock->wfds), NULL, &tv);
if( ret < 0 ) {
PJ_LOG(2, (__FILE__, "Error in select"));
}
else if (ret > 0) {
if( PJ_FD_ISSET( *(p_dupsock->p_sock), &(p_dupsock->rfds)) ) {
ntemp = sizeof(p_dupsock->in_buffer);
sock_len = sizeof(p_dupsock->in_packet.addr);
pj_sock_recvfrom(*(p_dupsock->p_sock), p_dupsock->in_packet.data, &ntemp, 0, (pj_sockaddr_t *)(&(p_dupsock->in_packet.addr)), &sock_len);
p_dupsock->in_packet.len = ntemp;
if(p_dupsock->recv_callback != NULL) {
p_dupsock->recv_callback(p_dupsock);
}
p_dupsock->in_packet.len = 0;
}
if( PJ_FD_ISSET( *(p_dupsock->p_sock), &(p_dupsock->wfds)) ) {
ntemp = p_dupsock->to_send->len - p_dupsock->to_send->sent;
pj_sock_sendto(*(p_dupsock->p_sock),
p_dupsock->to_send->data + p_dupsock->to_send->sent,
&ntemp, 0, (pj_sockaddr_t *)(&(p_dupsock->to_send->addr)), sizeof(p_dupsock->to_send->addr));
p_dupsock->to_send->sent += ntemp;
if(p_dupsock->to_send->len == p_dupsock->to_send->sent) {
if(p_dupsock->send_callback != NULL) {
p_dupsock->send_callback(p_dupsock);
}
p_dupsock->to_send = NULL;
PJ_FD_CLR(*(p_dupsock->p_sock), &(p_dupsock->wfds));
}
}
}
//PJ_LOG(5, (__FILE__, "end of a loop"));
}
pj_event_destroy(p_dupsock->p_event);
pj_sock_close(*(p_dupsock->p_sock));
return 0;
}
PJ_DECL(pj_status_t) pjstun_get_mapped_addr( pj_pool_factory *pf,
int sock_cnt, pj_sock_t sock[],
const pj_str_t *srv1, int port1,
const pj_str_t *srv2, int port2,
pj_sockaddr_in mapped_addr[])
{
pj_sockaddr_in srv_addr[2];
int i, j, send_cnt = 0;
pj_pool_t *pool;
struct {
struct {
pj_uint32_t mapped_addr;
pj_uint32_t mapped_port;
} srv[2];
} *rec;
void *out_msg;
pj_size_t out_msg_len;
int wait_resp = 0;
pj_status_t status;
PJ_CHECK_STACK();
/* Create pool. */
pool = pj_pool_create(pf, "stun%p", 1024, 1024, NULL);
if (!pool)
return PJ_ENOMEM;
/* Allocate client records */
rec = pj_pool_calloc(pool, sock_cnt, sizeof(*rec));
if (!rec) {
status = PJ_ENOMEM;
goto on_error;
}
/* Create the outgoing BIND REQUEST message template */
status = pjstun_create_bind_req( pool, &out_msg, &out_msg_len,
pj_rand(), pj_rand());
if (status != PJ_SUCCESS)
goto on_error;
/* Resolve servers. */
status = pj_sockaddr_in_init(&srv_addr[0], srv1, (pj_uint16_t)port1);
if (status != PJ_SUCCESS)
goto on_error;
status = pj_sockaddr_in_init(&srv_addr[1], srv2, (pj_uint16_t)port2);
if (status != PJ_SUCCESS)
goto on_error;
/* Init mapped addresses to zero */
pj_memset(mapped_addr, 0, sock_cnt * sizeof(pj_sockaddr_in));
/* Main retransmission loop. */
for (send_cnt=0; send_cnt<MAX_REQUEST; ++send_cnt) {
pj_time_val next_tx, now;
pj_fd_set_t r;
int select_rc;
PJ_FD_ZERO(&r);
/* Send messages to servers that has not given us response. */
for (i=0; i<sock_cnt && status==PJ_SUCCESS; ++i) {
for (j=0; j<2 && status==PJ_SUCCESS; ++j) {
pjstun_msg_hdr *msg_hdr = out_msg;
pj_ssize_t sent_len;
if (rec[i].srv[j].mapped_port != 0)
continue;
/* Modify message so that we can distinguish response. */
msg_hdr->tsx[2] = pj_htonl(i);
msg_hdr->tsx[3] = pj_htonl(j);
/* Send! */
sent_len = out_msg_len;
status = pj_sock_sendto(sock[i], out_msg, &sent_len, 0,
(pj_sockaddr_t*)&srv_addr[j],
sizeof(pj_sockaddr_in));
if (status == PJ_SUCCESS)
++wait_resp;
}
}
/* All requests sent.
* The loop below will wait for responses until all responses have
* been received (i.e. wait_resp==0) or timeout occurs, which then
* we'll go to the next retransmission iteration.
*/
/* Calculate time of next retransmission. */
pj_gettimeofday(&next_tx);
next_tx.sec += (stun_timer[send_cnt]/1000);
next_tx.msec += (stun_timer[send_cnt]%1000);
pj_time_val_normalize(&next_tx);
for (pj_gettimeofday(&now), select_rc=1;
status==PJ_SUCCESS && select_rc==1 && wait_resp>0
&& PJ_TIME_VAL_LT(now, next_tx);
pj_gettimeofday(&now))
{
pj_time_val timeout;
timeout = next_tx;
PJ_TIME_VAL_SUB(timeout, now);
for (i=0; i<sock_cnt; ++i) {
PJ_FD_SET(sock[i], &r);
}
select_rc = pj_sock_select(FD_SETSIZE, &r, NULL, NULL, &timeout);
if (select_rc < 1)
continue;
for (i=0; i<sock_cnt; ++i) {
int sock_idx, srv_idx;
pj_ssize_t len;
pjstun_msg msg;
pj_sockaddr_in addr;
int addrlen = sizeof(addr);
pjstun_mapped_addr_attr *attr;
char recv_buf[128];
if (!PJ_FD_ISSET(sock[i], &r))
continue;
len = sizeof(recv_buf);
status = pj_sock_recvfrom( sock[i], recv_buf,
&len, 0,
(pj_sockaddr_t*)&addr,
&addrlen);
--wait_resp;
if (status != PJ_SUCCESS)
continue;
status = pjstun_parse_msg(recv_buf, len, &msg);
if (status != PJ_SUCCESS) {
continue;
}
sock_idx = pj_ntohl(msg.hdr->tsx[2]);
srv_idx = pj_ntohl(msg.hdr->tsx[3]);
if (sock_idx<0 || sock_idx>=sock_cnt || srv_idx<0 || srv_idx>=2) {
status = PJLIB_UTIL_ESTUNININDEX;
continue;
}
if (pj_ntohs(msg.hdr->type) != PJSTUN_BINDING_RESPONSE) {
status = PJLIB_UTIL_ESTUNNOBINDRES;
continue;
}
if (pjstun_msg_find_attr(&msg, PJSTUN_ATTR_ERROR_CODE) != NULL) {
status = PJLIB_UTIL_ESTUNRECVERRATTR;
continue;
}
attr = (void*)pjstun_msg_find_attr(&msg, PJSTUN_ATTR_MAPPED_ADDR);
if (!attr) {
status = PJLIB_UTIL_ESTUNNOMAP;
continue;
}
rec[sock_idx].srv[srv_idx].mapped_addr = attr->addr;
rec[sock_idx].srv[srv_idx].mapped_port = attr->port;
}
}
/* The best scenario is if all requests have been replied.
* Then we don't need to go to the next retransmission iteration.
*/
if (wait_resp <= 0)
break;
}
for (i=0; i<sock_cnt && status==PJ_SUCCESS; ++i) {
if (rec[i].srv[0].mapped_addr == rec[i].srv[1].mapped_addr &&
rec[i].srv[0].mapped_port == rec[i].srv[1].mapped_port)
{
mapped_addr[i].sin_family = PJ_AF_INET;
mapped_addr[i].sin_addr.s_addr = rec[i].srv[0].mapped_addr;
mapped_addr[i].sin_port = (pj_uint16_t)rec[i].srv[0].mapped_port;
if (rec[i].srv[0].mapped_addr == 0 || rec[i].srv[0].mapped_port == 0) {
status = PJLIB_UTIL_ESTUNNOTRESPOND;
break;
}
} else {
status = PJLIB_UTIL_ESTUNSYMMETRIC;
break;
}
}
pj_pool_release(pool);
return status;
on_error:
if (pool) pj_pool_release(pool);
return status;
}
PJ_DEF(int) pj_ioqueue_poll( pj_ioqueue_t *ioque, const pj_time_val *timeout)
{
pj_fdset_t rfdset, wfdset, xfdset;
int rc;
pj_ioqueue_key_t *h;
/* Copy ioqueue's fd_set to local variables. */
pj_mutex_lock(ioque->mutex);
rfdset = ioque->rfdset;
wfdset = ioque->wfdset;
#if PJ_HAS_TCP
xfdset = ioque->xfdset;
#else
PJ_FD_ZERO(&xfdset);
#endif
/* Unlock ioqueue before select(). */
pj_mutex_unlock(ioque->mutex);
rc = pj_sock_select(FD_SETSIZE, &rfdset, &wfdset, &xfdset, timeout);
if (rc <= 0)
return rc;
/* Lock ioqueue again before scanning for signalled sockets. */
pj_mutex_lock(ioque->mutex);
#if PJ_HAS_TCP
/* Scan for exception socket */
h = ioque->hlist.next;
for ( ; h!=&ioque->hlist; h = h->next) {
if ((h->op & PJ_IOQUEUE_OP_CONNECT) && PJ_FD_ISSET(h->fd, &xfdset))
break;
}
if (h != &ioque->hlist) {
/* 'connect()' should be the only operation. */
pj_assert((h->op == PJ_IOQUEUE_OP_CONNECT));
/* Clear operation. */
h->op &= ~(PJ_IOQUEUE_OP_CONNECT);
PJ_FD_CLR(h->fd, &ioque->wfdset);
PJ_FD_CLR(h->fd, &ioque->xfdset);
/* Unlock I/O queue before calling callback. */
pj_mutex_unlock(ioque->mutex);
/* Call callback. */
(*h->cb.on_connect_complete)(h, -1);
return 1;
}
#endif /* PJ_HAS_TCP */
/* Scan for writable socket */
h = ioque->hlist.next;
for ( ; h!=&ioque->hlist; h = h->next) {
if ((PJ_IOQUEUE_IS_WRITE_OP(h->op) || PJ_IOQUEUE_IS_CONNECT_OP(h->op)) && PJ_FD_ISSET(h->fd, &wfdset))
break;
}
if (h != &ioque->hlist) {
pj_assert(PJ_IOQUEUE_IS_WRITE_OP(h->op) || PJ_IOQUEUE_IS_CONNECT_OP(h->op));
#if PJ_HAS_TCP
if ((h->op & PJ_IOQUEUE_OP_CONNECT)) {
/* Completion of connect() operation */
pj_ssize_t bytes_transfered;
#if defined(PJ_LINUX)
/* from connect(2):
* On Linux, use getsockopt to read the SO_ERROR option at
* level SOL_SOCKET to determine whether connect() completed
* successfully (if SO_ERROR is zero).
*/
int value;
socklen_t vallen = sizeof(value);
int rc = getsockopt(h->fd, SOL_SOCKET, SO_ERROR, &value, &vallen);
if (rc != 0) {
/* Argh!! What to do now???
* Just indicate that the socket is connected. The
* application will get error as soon as it tries to use
* the socket to send/receive.
*/
PJ_PERROR(("ioqueue", "Unable to determine connect() status"));
bytes_transfered = 0;
} else {
bytes_transfered = value;
}
#elif defined(PJ_WIN32)
bytes_transfered = 0; /* success */
#else
# error "Got to check this one!"
#endif
/* Clear operation. */
h->op &= (~PJ_IOQUEUE_OP_CONNECT);
PJ_FD_CLR(h->fd, &ioque->wfdset);
PJ_FD_CLR(h->fd, &ioque->xfdset);
/* Unlock mutex before calling callback. */
pj_mutex_unlock(ioque->mutex);
/* Call callback. */
(*h->cb.on_connect_complete)(h, bytes_transfered);
return 1;
} else
#endif /* PJ_HAS_TCP */
{
/* Completion of write(), send(), or sendto() operation. */
/* Clear operation. */
h->op &= ~(PJ_IOQUEUE_OP_WRITE | PJ_IOQUEUE_OP_SEND_TO);
PJ_FD_CLR(h->fd, &ioque->wfdset);
/* Unlock mutex before calling callback. */
pj_mutex_unlock(ioque->mutex);
/* Call callback. */
/* All data must have been sent? */
(*h->cb.on_write_complete)(h, h->wr_buflen);
return 1;
}
/* Unreached. */
}
/* Scan for readable socket. */
h = ioque->hlist.next;
for ( ; h!=&ioque->hlist; h = h->next) {
if ((PJ_IOQUEUE_IS_READ_OP(h->op) || PJ_IOQUEUE_IS_ACCEPT_OP(h->op)) &&
PJ_FD_ISSET(h->fd, &rfdset))
break;
}
if (h != &ioque->hlist) {
pj_assert(PJ_IOQUEUE_IS_READ_OP(h->op) || PJ_IOQUEUE_IS_ACCEPT_OP(h->op));
# if PJ_HAS_TCP
if ((h->op & PJ_IOQUEUE_OP_ACCEPT)) {
/* accept() must be the only operation specified on server socket */
pj_assert(h->op == PJ_IOQUEUE_OP_ACCEPT);
*h->accept_fd = pj_sock_accept(h->fd, h->rmt_addr, h->rmt_addrlen);
if (*h->accept_fd == PJ_INVALID_SOCKET) {
rc = -1;
} else if (h->local_addr) {
rc = pj_sock_getsockname(*h->accept_fd, h->local_addr, h->local_addrlen);
} else {
rc = 0;
}
h->op &= ~(PJ_IOQUEUE_OP_ACCEPT);
PJ_FD_CLR(h->fd, &ioque->rfdset);
/* Unlock mutex before calling callback. */
pj_mutex_unlock(ioque->mutex);
/* Call callback. */
(*h->cb.on_accept_complete)(h, rc);
return 1;
} else
# endif
if ((h->op & PJ_IOQUEUE_OP_RECV_FROM)) {
rc = pj_sock_recvfrom(h->fd, h->rd_buf, h->rd_buflen, 0,
h->rmt_addr, h->rmt_addrlen);
} else {
rc = pj_sock_recv(h->fd, h->rd_buf, h->rd_buflen, 0);
}
if (rc < 0) {
pj_status_t sock_err = -1;
# if defined(_WIN32)
/* On Win32, for UDP, WSAECONNRESET on the receive side
* indicates that previous sending has triggered ICMP Port
* Unreachable message.
* But we wouldn't know at this point which one of previous
* key that has triggered the error, since UDP socket can
* be shared!
* So we'll just ignore it!
*/
sock_err = pj_sock_getlasterror();
if (sock_err == PJ_ECONNRESET) {
pj_mutex_unlock(ioque->mutex);
PJ_LOG(4,(THIS_FILE, "Received ICMP port unreachable on key=%p (ignored)!", h));
return 0;
}
# endif
PJ_LOG(4, (THIS_FILE, "socket recv error on key %p, rc=%d, err=%d", h, rc, sock_err));
}
h->op &= ~(PJ_IOQUEUE_OP_READ | PJ_IOQUEUE_OP_RECV_FROM);
PJ_FD_CLR(h->fd, &ioque->rfdset);
/* Unlock mutex before callback. */
pj_mutex_unlock(ioque->mutex);
/* Call callback. */
(*h->cb.on_read_complete)(h, rc);
return 1;
}
/* Shouldn't happen. */
/* For strange reason on WinXP select() can return 1 while there is no
* fd_set signaled. */
/* pj_assert(0); */
rc = 0;
pj_mutex_unlock(ioque->mutex);
return rc;
}