static int cancellable_connect(struct openconnect_info *vpninfo, int sockfd,
const struct sockaddr *addr, socklen_t addrlen)
{
struct sockaddr_storage peer;
socklen_t peerlen = sizeof(peer);
fd_set wr_set, rd_set;
int maxfd = sockfd;
set_sock_nonblock(sockfd);
if (vpninfo->protect_socket)
vpninfo->protect_socket(vpninfo->cbdata, sockfd);
if (connect(sockfd, addr, addrlen) < 0 && !connect_pending())
return -1;
do {
FD_ZERO(&wr_set);
FD_ZERO(&rd_set);
FD_SET(sockfd, &wr_set);
cmd_fd_set(vpninfo, &rd_set, &maxfd);
select(maxfd + 1, &rd_set, &wr_set, NULL, NULL);
if (is_cancel_pending(vpninfo, &rd_set)) {
vpn_progress(vpninfo, PRG_ERR, _("Socket connect cancelled\n"));
errno = EINTR;
return -1;
}
} while (!FD_ISSET(sockfd, &wr_set) && !vpninfo->got_pause_cmd);
/* Check whether connect() succeeded or failed by using
getpeername(). See http://cr.yp.to/docs/connect.html */
return getpeername(sockfd, (void *)&peer, &peerlen);
}
int zmq::socket_base_t::bind (const char *addr_)
{
if (unlikely (ctx_terminated)) {
errno = ETERM;
return -1;
}
// Process pending commands, if any.
int rc = process_commands (0, false);
if (unlikely (rc != 0))
return -1;
// Parse addr_ string.
std::string protocol;
std::string address;
rc = parse_uri (addr_, protocol, address);
if (rc != 0)
return -1;
rc = check_protocol (protocol);
if (rc != 0)
return -1;
if (protocol == "inproc") {
endpoint_t endpoint = {this, options};
int rc = register_endpoint (addr_, endpoint);
if (rc == 0) {
connect_pending(addr_, this);
last_endpoint.assign (addr_);
}
return rc;
}
if (protocol == "pgm" || protocol == "epgm" || protocol == "norm") {
// For convenience's sake, bind can be used interchageable with
// connect for PGM, EPGM and NORM transports.
return connect (addr_);
}
// Remaining trasnports require to be run in an I/O thread, so at this
// point we'll choose one.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
return -1;
}
if (protocol == "tcp") {
tcp_listener_t *listener = new (std::nothrow) tcp_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
delete listener;
event_bind_failed (address, zmq_errno());
return -1;
}
// Save last endpoint URI
listener->get_address (last_endpoint);
add_endpoint (addr_, (own_t *) listener, NULL);
return 0;
}
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
if (protocol == "ipc") {
ipc_listener_t *listener = new (std::nothrow) ipc_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
delete listener;
event_bind_failed (address, zmq_errno());
return -1;
}
// Save last endpoint URI
listener->get_address (last_endpoint);
add_endpoint (addr_, (own_t *) listener, NULL);
return 0;
}
#endif
#if defined ZMQ_HAVE_TIPC
if (protocol == "tipc") {
tipc_listener_t *listener = new (std::nothrow) tipc_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
delete listener;
event_bind_failed (address, zmq_errno());
return -1;
}
// Save last endpoint URI
listener->get_address (last_endpoint);
add_endpoint (addr_, (own_t *) listener, NULL);
return 0;
}
#endif
zmq_assert (false);
return -1;
}
int zmq::socket_base_t::bind (const char *addr_)
{
scoped_optional_lock_t sync_lock(thread_safe ? &sync : NULL);
if (unlikely (ctx_terminated)) {
errno = ETERM;
return -1;
}
// Process pending commands, if any.
int rc = process_commands (0, false);
if (unlikely (rc != 0)) {
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
if (parse_uri (addr_, protocol, address) || check_protocol (protocol)) {
return -1;
}
if (protocol == "inproc") {
const endpoint_t endpoint = { this, options };
rc = register_endpoint (addr_, endpoint);
if (rc == 0) {
connect_pending (addr_, this);
last_endpoint.assign (addr_);
options.connected = true;
}
return rc;
}
if (protocol == "pgm" || protocol == "epgm" || protocol == "norm") {
// For convenience's sake, bind can be used interchangeable with
// connect for PGM, EPGM, NORM transports.
rc = connect (addr_);
if (rc != -1)
options.connected = true;
return rc;
}
if (protocol == "udp") {
if (!(options.type == ZMQ_DGRAM || options.type == ZMQ_DISH)) {
errno = ENOCOMPATPROTO;
return -1;
}
// Choose the I/O thread to run the session in.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
return -1;
}
address_t *paddr = new (std::nothrow) address_t (protocol, address, this->get_ctx ());
alloc_assert (paddr);
paddr->resolved.udp_addr = new (std::nothrow) udp_address_t ();
alloc_assert (paddr->resolved.udp_addr);
rc = paddr->resolved.udp_addr->resolve (address.c_str(), true);
if (rc != 0) {
LIBZMQ_DELETE(paddr);
return -1;
}
session_base_t *session = session_base_t::create (io_thread, true, this,
options, paddr);
errno_assert (session);
pipe_t *newpipe = NULL;
// Create a bi-directional pipe.
object_t *parents [2] = {this, session};
pipe_t *new_pipes [2] = {NULL, NULL};
int hwms [2] = {options.sndhwm, options.rcvhwm};
bool conflates [2] = {false, false};
rc = pipepair (parents, new_pipes, hwms, conflates);
errno_assert (rc == 0);
// Attach local end of the pipe to the socket object.
attach_pipe (new_pipes [0], true);
newpipe = new_pipes [0];
// Attach remote end of the pipe to the session object later on.
session->attach_pipe (new_pipes [1]);
// Save last endpoint URI
paddr->to_string (last_endpoint);
add_endpoint (addr_, (own_t *) session, newpipe);
return 0;
}
// Remaining transports require to be run in an I/O thread, so at this
// point we'll choose one.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
return -1;
}
if (protocol == "tcp") {
tcp_listener_t *listener = new (std::nothrow) tcp_listener_t (
io_thread, this, options);
alloc_assert (listener);
rc = listener->set_address (address.c_str ());
if (rc != 0) {
LIBZMQ_DELETE(listener);
event_bind_failed (address, zmq_errno());
return -1;
}
// Save last endpoint URI
listener->get_address (last_endpoint);
add_endpoint (last_endpoint.c_str (), (own_t *) listener, NULL);
options.connected = true;
return 0;
}
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
if (protocol == "ipc") {
ipc_listener_t *listener = new (std::nothrow) ipc_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
LIBZMQ_DELETE(listener);
event_bind_failed (address, zmq_errno());
return -1;
}
// Save last endpoint URI
listener->get_address (last_endpoint);
add_endpoint (last_endpoint.c_str (), (own_t *) listener, NULL);
options.connected = true;
return 0;
}
#endif
#if defined ZMQ_HAVE_TIPC
if (protocol == "tipc") {
tipc_listener_t *listener = new (std::nothrow) tipc_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
LIBZMQ_DELETE(listener);
event_bind_failed (address, zmq_errno());
return -1;
}
// Save last endpoint URI
listener->get_address (last_endpoint);
add_endpoint (addr_, (own_t *) listener, NULL);
options.connected = true;
return 0;
}
#endif
#if defined ZMQ_HAVE_VMCI
if (protocol == "vmci") {
vmci_listener_t *listener = new (std::nothrow) vmci_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
LIBZMQ_DELETE(listener);
event_bind_failed (address, zmq_errno ());
return -1;
}
listener->get_address (last_endpoint);
add_endpoint (last_endpoint.c_str(), (own_t *) listener, NULL);
options.connected = true;
return 0;
}
#endif
zmq_assert (false);
return -1;
}
/* Windows is interminably horrid, and has disjoint errno spaces.
* So if we return a positive value, that's a WSA Error and should
* be handled with openconnect__win32_strerror(). But if we return a
* negative value, that's a normal errno and should be handled with
* strerror(). No, you can't just pass the latter value (negated) to
* openconnect__win32_strerror() because it gives nonsense results. */
static int cancellable_connect(struct openconnect_info *vpninfo, int sockfd,
const struct sockaddr *addr, socklen_t addrlen)
{
struct sockaddr_storage peer;
socklen_t peerlen = sizeof(peer);
fd_set wr_set, rd_set, ex_set;
int maxfd = sockfd;
int err;
set_sock_nonblock(sockfd);
if (vpninfo->protect_socket)
vpninfo->protect_socket(vpninfo->cbdata, sockfd);
if (connect(sockfd, addr, addrlen) < 0 && !connect_pending()) {
#ifdef _WIN32
return WSAGetLastError();
#else
return -errno;
#endif
}
do {
FD_ZERO(&wr_set);
FD_ZERO(&rd_set);
FD_ZERO(&ex_set);
FD_SET(sockfd, &wr_set);
#ifdef _WIN32 /* Windows indicates failure this way, not in wr_set */
FD_SET(sockfd, &ex_set);
#endif
cmd_fd_set(vpninfo, &rd_set, &maxfd);
select(maxfd + 1, &rd_set, &wr_set, &ex_set, NULL);
if (is_cancel_pending(vpninfo, &rd_set)) {
vpn_progress(vpninfo, PRG_ERR, _("Socket connect cancelled\n"));
return -EINTR;
}
} while (!FD_ISSET(sockfd, &wr_set) && !FD_ISSET(sockfd, &ex_set) &&
!vpninfo->got_pause_cmd);
/* Check whether connect() succeeded or failed by using
getpeername(). See http://cr.yp.to/docs/connect.html */
if (!getpeername(sockfd, (void *)&peer, &peerlen))
return 0;
#ifdef _WIN32 /* On Windows, use getsockopt() to determine the error.
* We don't ddo this on Windows because it just reports
* -ENOTCONN, which we already knew. */
err = WSAGetLastError();
if (err == WSAENOTCONN) {
socklen_t errlen = sizeof(err);
getsockopt(sockfd, SOL_SOCKET, SO_ERROR,
(void *)&err, &errlen);
}
#else
err = -errno;
if (err == -ENOTCONN) {
int ch;
if (read(sockfd, &ch, 1) < 0)
err = -errno;
/* It should *always* fail! */
}
#endif
return err;
}
