/*
* socket.c - socket functions for the library
*
* This file is part of the SSH Library
*
* Copyright (c) 2008-2010 by Aris Adamantiadis
*
* The SSH Library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* The SSH Library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the SSH Library; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include "config.h"
#include <errno.h>
#include <stdio.h>
#ifdef _WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#if _MSC_VER >= 1400
#include <io.h>
#undef open
#define open _open
#undef close
#define close _close
#undef read
#define read _read
#undef write
#define write _write
#endif /* _MSC_VER */
#else /* _WIN32 */
#include <fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <signal.h>
#endif /* _WIN32 */
#include "libssh/priv.h"
#include "libssh/callbacks.h"
#include "libssh/socket.h"
#include "libssh/buffer.h"
#include "libssh/poll.h"
#include "libssh/session.h"
/**
* @internal
*
* @defgroup libssh_socket The SSH socket functions.
* @ingroup libssh
*
* Functions for handling sockets.
*
* @{
*/
enum ssh_socket_states_e {
SSH_SOCKET_NONE,
SSH_SOCKET_CONNECTING,
SSH_SOCKET_CONNECTED,
SSH_SOCKET_EOF,
SSH_SOCKET_ERROR,
SSH_SOCKET_CLOSED
};
struct ssh_socket_struct {
socket_t fd;
int fd_is_socket;
int last_errno;
int read_wontblock; /* reading now on socket will
not block */
int write_wontblock;
int data_except;
enum ssh_socket_states_e state;
ssh_buffer out_buffer;
ssh_buffer in_buffer;
ssh_session session;
ssh_socket_callbacks callbacks;
ssh_poll_handle poll_handle;
#ifndef _WIN32
pid_t proxy_pid;
#endif
};
static int sockets_initialized = 0;
static ssize_t ssh_socket_unbuffered_read(ssh_socket s,
void *buffer,
uint32_t len);
static ssize_t ssh_socket_unbuffered_write(ssh_socket s,
const void *buffer,
uint32_t len);
/**
* \internal
* \brief inits the socket system (windows specific)
*/
int ssh_socket_init(void)
{
if (sockets_initialized == 0) {
#ifdef _WIN32
struct WSAData wsaData;
/* Initiates use of the Winsock DLL by a process. */
if (WSAStartup(MAKEWORD(2, 0), &wsaData) != 0) {
return -1;
}
#endif
ssh_poll_init();
sockets_initialized = 1;
}
return 0;
}
/**
* @brief Cleanup the socket system.
*/
void ssh_socket_cleanup(void)
{
if (sockets_initialized == 1) {
ssh_poll_cleanup();
#ifdef _WIN32
WSACleanup();
#endif
sockets_initialized = 0;
}
}
/**
* \internal
* \brief creates a new Socket object
*/
ssh_socket ssh_socket_new(ssh_session session)
{
ssh_socket s;
s = calloc(1, sizeof(struct ssh_socket_struct));
if (s == NULL) {
ssh_set_error_oom(session);
return NULL;
}
s->fd = SSH_INVALID_SOCKET;
s->last_errno = -1;
s->fd_is_socket = 1;
s->session = session;
s->in_buffer = ssh_buffer_new();
if (s->in_buffer == NULL) {
ssh_set_error_oom(session);
SAFE_FREE(s);
return NULL;
}
s->out_buffer=ssh_buffer_new();
if (s->out_buffer == NULL) {
ssh_set_error_oom(session);
SSH_BUFFER_FREE(s->in_buffer);
SAFE_FREE(s);
return NULL;
}
s->read_wontblock = 0;
s->write_wontblock = 0;
s->data_except = 0;
s->poll_handle = NULL;
s->state=SSH_SOCKET_NONE;
return s;
}
/**
* @internal
* @brief Reset the state of a socket so it looks brand-new
* @param[in] s socket to rest
*/
void ssh_socket_reset(ssh_socket s)
{
s->fd = SSH_INVALID_SOCKET;
s->last_errno = -1;
s->fd_is_socket = 1;
ssh_buffer_reinit(s->in_buffer);
ssh_buffer_reinit(s->out_buffer);
s->read_wontblock = 0;
s->write_wontblock = 0;
s->data_except = 0;
s->poll_handle = NULL;
s->state=SSH_SOCKET_NONE;
#ifndef _WIN32
s->proxy_pid = 0;
#endif
}
/**
* @internal
* @brief the socket callbacks, i.e. callbacks to be called
* upon a socket event.
* @param s socket to set callbacks on.
* @param callbacks a ssh_socket_callback object reference.
*/
void ssh_socket_set_callbacks(ssh_socket s, ssh_socket_callbacks callbacks)
{
s->callbacks = callbacks;
}
/**
* @brief SSH poll callback. This callback will be used when an event
* caught on the socket.
*
* @param p Poll object this callback belongs to.
* @param fd The raw socket.
* @param revents The current poll events on the socket.
* @param userdata Userdata to be passed to the callback function,
* in this case the socket object.
*
* @return 0 on success, < 0 when the poll object has been removed
* from its poll context.
*/
int ssh_socket_pollcallback(struct ssh_poll_handle_struct *p,
socket_t fd,
int revents,
void *v_s)
{
ssh_socket s = (ssh_socket)v_s;
char buffer[MAX_BUF_SIZE];
ssize_t nread;
int rc;
int err = 0;
socklen_t errlen = sizeof(err);
/* Do not do anything if this socket was already closed */
if (!ssh_socket_is_open(s)) {
return -1;
}
SSH_LOG(SSH_LOG_TRACE, "Poll callback on socket %d (%s%s%s), out buffer %d",fd,
(revents & POLLIN) ? "POLLIN ":"",
(revents & POLLOUT) ? "POLLOUT ":"",
(revents & POLLERR) ? "POLLERR":"",
ssh_buffer_get_len(s->out_buffer));
if ((revents & POLLERR) || (revents & POLLHUP)) {
/* Check if we are in a connecting state */
if (s->state == SSH_SOCKET_CONNECTING) {
s->state = SSH_SOCKET_ERROR;
rc = getsockopt(fd, SOL_SOCKET, SO_ERROR, (char *)&err, &errlen);
if (rc < 0) {
err = errno;
}
ssh_socket_close(s);
/* Overwrite ssh_socket_close() error with the real socket error */
s->last_errno = err;
errno = err;
if (s->callbacks != NULL && s->callbacks->connected != NULL) {
s->callbacks->connected(SSH_SOCKET_CONNECTED_ERROR,
err,
s->callbacks->userdata);
}
return -1;
}
/* Then we are in a more standard kind of error */
/* force a read to get an explanation */
revents |= POLLIN;
}
if ((revents & POLLIN) && s->state == SSH_SOCKET_CONNECTED) {
s->read_wontblock = 1;
nread = ssh_socket_unbuffered_read(s, buffer, sizeof(buffer));
if (nread < 0) {
if (p != NULL) {
ssh_poll_remove_events(p, POLLIN);
}
if (s->callbacks != NULL && s->callbacks->exception != NULL) {
s->callbacks->exception(SSH_SOCKET_EXCEPTION_ERROR,
s->last_errno,
s->callbacks->userdata);
}
return -2;
}
if (nread == 0) {
if (p != NULL) {
ssh_poll_remove_events(p, POLLIN);
}
if (s->callbacks != NULL && s->callbacks->exception != NULL) {
s->callbacks->exception(SSH_SOCKET_EXCEPTION_EOF,
0,
s->callbacks->userdata);
}
return -2;
}
if (s->session->socket_counter != NULL) {
s->session->socket_counter->in_bytes += nread;
}
/* Bufferize the data and then call the callback */
rc = ssh_buffer_add_data(s->in_buffer, buffer, nread);
if (rc < 0) {
return -1;
}
if (s->callbacks != NULL && s->callbacks->data != NULL) {
do {
nread = s->callbacks->data(ssh_buffer_get(s->in_buffer),
ssh_buffer_get_len(s->in_buffer),
s->callbacks->userdata);
ssh_buffer_pass_bytes(s->in_buffer, nread);
} while ((nread > 0) && (s->state == SSH_SOCKET_CONNECTED));
/* p may have been freed, so don't use it
* anymore in this function */
p = NULL;
}
}
#ifdef _WIN32
if (revents & POLLOUT || revents & POLLWRNORM) {
#else
if (revents & POLLOUT) {
#endif
uint32_t len;
/* First, POLLOUT is a sign we may be connected */
if (s->state == SSH_SOCKET_CONNECTING) {
SSH_LOG(SSH_LOG_PACKET, "Received POLLOUT in connecting state");
s->state = SSH_SOCKET_CONNECTED;
if (p != NULL) {
ssh_poll_set_events(p, POLLOUT | POLLIN);
}
rc = ssh_socket_set_blocking(ssh_socket_get_fd(s));
if (rc < 0) {
return -1;
}
if (s->callbacks != NULL && s->callbacks->connected != NULL) {
s->callbacks->connected(SSH_SOCKET_CONNECTED_OK,
0,
s->callbacks->userdata);
}
return 0;
}
/* So, we can write data */
s->write_wontblock = 1;
if (p != NULL) {
ssh_poll_remove_events(p, POLLOUT);
}
/* If buffered data is pending, write it */
len = ssh_buffer_get_len(s->out_buffer);
if (len > 0) {
ssh_socket_nonblocking_flush(s);
} else if (s->callbacks != NULL && s->callbacks->controlflow != NULL) {
/* Otherwise advertise the upper level that write can be done */
SSH_LOG(SSH_LOG_TRACE,"sending control flow event");
s->callbacks->controlflow(SSH_SOCKET_FLOW_WRITEWONTBLOCK,
s->callbacks->userdata);
}
/* TODO: Find a way to put back POLLOUT when buffering occurs */
}
/* Return -1 if the poll handler disappeared */
if (s->poll_handle == NULL) {
return -1;
}
return 0;
}
/** @internal
* @brief returns the poll handle corresponding to the socket,
* creates it if it does not exist.
* @returns allocated and initialized ssh_poll_handle object
*/
ssh_poll_handle ssh_socket_get_poll_handle(ssh_socket s)
{
if (s->poll_handle) {
return s->poll_handle;
}
s->poll_handle = ssh_poll_new(s->fd,0,ssh_socket_pollcallback,s);
return s->poll_handle;
}
/** \internal
* \brief Deletes a socket object
*/
void ssh_socket_free(ssh_socket s)
{
if (s == NULL) {
return;
}
ssh_socket_close(s);
SSH_BUFFER_FREE(s->in_buffer);
SSH_BUFFER_FREE(s->out_buffer);
SAFE_FREE(s);
}
#ifndef _WIN32
int ssh_socket_unix(ssh_socket s, const char *path)
{
struct sockaddr_un sunaddr;
socket_t fd;
sunaddr.sun_family = AF_UNIX;
snprintf(sunaddr.sun_path, sizeof(sunaddr.sun_path), "%s", path);
fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd == SSH_INVALID_SOCKET) {
ssh_set_error(s->session, SSH_FATAL,
"Error from socket(AF_UNIX, SOCK_STREAM, 0): %s",
strerror(errno));
return -1;
}
if (fcntl(fd, F_SETFD, 1) == -1) {
ssh_set_error(s->session, SSH_FATAL,
"Error from fcntl(fd, F_SETFD, 1): %s",
strerror(errno));
close(fd);
return -1;
}
if (connect(fd, (struct sockaddr *) &sunaddr, sizeof(sunaddr)) < 0) {
ssh_set_error(s->session, SSH_FATAL, "Error from connect(): %s",
strerror(errno));
close(fd);
return -1;
}
ssh_socket_set_fd(s,fd);
return 0;
}
#endif
/** \internal
* \brief closes a socket
*/
void ssh_socket_close(ssh_socket s)
{
if (ssh_socket_is_open(s)) {
#ifdef _WIN32
CLOSE_SOCKET(s->fd);
s->last_errno = WSAGetLastError();
#else
CLOSE_SOCKET(s->fd);
s->last_errno = errno;
#endif
}
if (s->poll_handle != NULL) {
ssh_poll_free(s->poll_handle);
s->poll_handle = NULL;
}
s->state = SSH_SOCKET_CLOSED;
#ifndef _WIN32
/* If the proxy command still runs try to kill it */
if (s->proxy_pid != 0) {
int status;
pid_t pid = s->proxy_pid;
s->proxy_pid = 0;
kill(pid, SIGTERM);
while (waitpid(pid, &status, 0) == -1) {
if (errno != EINTR) {
SSH_LOG(SSH_LOG_WARN, "waitpid failed: %s", strerror(errno));
return;
}
}
if (!WIFEXITED(status)) {
SSH_LOG(SSH_LOG_WARN, "Proxy command exitted abnormally");
return;
}
SSH_LOG(SSH_LOG_TRACE, "Proxy command returned %d", WEXITSTATUS(status));
}
#endif
}
/**
* @internal
* @brief sets the file descriptor of the socket.
* @param[out] s ssh_socket to update
* @param[in] fd file descriptor to set
* @warning this function updates boths the input and output
* file descriptors
*/
void ssh_socket_set_fd(ssh_socket s, socket_t fd)
{
s->fd = fd;
if (s->poll_handle) {
ssh_poll_set_fd(s->poll_handle,fd);
} else {
s->state = SSH_SOCKET_CONNECTING;
/* POLLOUT is the event to wait for in a nonblocking connect */
ssh_poll_set_events(ssh_socket_get_poll_handle(s), POLLOUT);
#ifdef _WIN32
ssh_poll_add_events(ssh_socket_get_poll_handle(s), POLLWRNORM);
#endif
}
}
/** \internal
* \brief returns the input file descriptor of the socket
*/
socket_t ssh_socket_get_fd(ssh_socket s)
{
return s->fd;
}
/** \internal
* \brief returns nonzero if the socket is open
*/
int ssh_socket_is_open(ssh_socket s)
{
return s->fd != SSH_INVALID_SOCKET;
}
/** \internal
* \brief read len bytes from socket into buffer
*/
static ssize_t ssh_socket_unbuffered_read(ssh_socket s,
void *buffer,
uint32_t len)
{
ssize_t rc = -1;
if (s->data_except) {
return -1;
}
if (s->fd_is_socket) {
rc = recv(s->fd,buffer, len, 0);
} else {
rc = read(s->fd,buffer, len);
}
#ifdef _WIN32
s->last_errno = WSAGetLastError();
#else
s->last_errno = errno;
#endif
s->read_wontblock = 0;
if (rc < 0) {
s->data_except = 1;
}
return rc;
}
/** \internal
* \brief writes len bytes from buffer to socket
*/
static ssize_t ssh_socket_unbuffered_write(ssh_socket s,
const void *buffer,
uint32_t len)
{
ssize_t w = -1;
int flags = 0;
#ifdef MSG_NOSIGNAL
flags |= MSG_NOSIGNAL;
#endif
if (s->data_except) {
return -1;
}
if (s->fd_is_socket) {
w = send(s->fd, buffer, len, flags);
} else {
w = write(s->fd, buffer, len);
}
#ifdef _WIN32
s->last_errno = WSAGetLastError();
#else
s->last_errno = errno;
#endif
s->write_wontblock = 0;
/* Reactive the POLLOUT detector in the poll multiplexer system */
if (s->poll_handle) {
SSH_LOG(SSH_LOG_PACKET, "Enabling POLLOUT for socket");
ssh_poll_set_events(s->poll_handle,ssh_poll_get_events(s->poll_handle) | POLLOUT);
}
if (w < 0) {
s->data_except = 1;
}
return w;
}
/** \internal
* \brief returns nonzero if the current socket is in the fd_set
*/
int ssh_socket_fd_isset(ssh_socket s, fd_set *set)
{
if(s->fd == SSH_INVALID_SOCKET) {
return 0;
}
return FD_ISSET(s->fd,set);
}
/** \internal
* \brief sets the current fd in a fd_set and updates the max_fd
*/
void ssh_socket_fd_set(ssh_socket s, fd_set *set, socket_t *max_fd)
{
if (s->fd == SSH_INVALID_SOCKET) {
return;
}
FD_SET(s->fd,set);
if (s->fd >= 0 &&
s->fd >= *max_fd &&
s->fd != SSH_INVALID_SOCKET) {
*max_fd = s->fd + 1;
}
}
/** \internal
* \brief buffered write of data
* \returns SSH_OK, or SSH_ERROR
* \warning has no effect on socket before a flush
*/
int ssh_socket_write(ssh_socket s, const void *buffer, int len)
{
if (len > 0) {
if (ssh_buffer_add_data(s->out_buffer, buffer, len) < 0) {
ssh_set_error_oom(s->session);
return SSH_ERROR;
}
ssh_socket_nonblocking_flush(s);
}
return SSH_OK;
}
/** \internal
* \brief starts a nonblocking flush of the output buffer
*
*/
int ssh_socket_nonblocking_flush(ssh_socket s)
{
ssh_session session = s->session;
uint32_t len;
if (!ssh_socket_is_open(s)) {
session->alive = 0;
if (s->callbacks && s->callbacks->exception) {
s->callbacks->exception(SSH_SOCKET_EXCEPTION_ERROR,
s->last_errno,
s->callbacks->userdata);
} else {
ssh_set_error(session,
SSH_FATAL,
"Writing packet: error on socket (or connection "
"closed): %s",
strerror(s->last_errno));
}
return SSH_ERROR;
}
len = ssh_buffer_get_len(s->out_buffer);
if (!s->write_wontblock && s->poll_handle && len > 0) {
/* force the poll system to catch pollout events */
ssh_poll_add_events(s->poll_handle, POLLOUT);
return SSH_AGAIN;
}
if (s->write_wontblock && len > 0) {
ssize_t bwritten;
bwritten = ssh_socket_unbuffered_write(s,
ssh_buffer_get(s->out_buffer),
len);
if (bwritten < 0) {
session->alive = 0;
ssh_socket_close(s);
if (s->callbacks && s->callbacks->exception) {
s->callbacks->exception(SSH_SOCKET_EXCEPTION_ERROR,
s->last_errno,
s->callbacks->userdata);
} else {
ssh_set_error(session,
SSH_FATAL,
"Writing packet: error on socket (or connection "
"closed): %s",
strerror(s->last_errno));
}
return SSH_ERROR;
}
ssh_buffer_pass_bytes(s->out_buffer, bwritten);
if (s->session->socket_counter != NULL) {
s->session->socket_counter->out_bytes += bwritten;
}
}
/* Is there some data pending? */
len = ssh_buffer_get_len(s->out_buffer);
if (s->poll_handle && len > 0) {
/* force the poll system to catch pollout events */
ssh_poll_add_events(s->poll_handle, POLLOUT);
return SSH_AGAIN;
}
/* all data written */
return SSH_OK;
}
void ssh_socket_set_write_wontblock(ssh_socket s)
{
s->write_wontblock = 1;
}
void ssh_socket_set_read_wontblock(ssh_socket s)
{
s->read_wontblock = 1;
}
void ssh_socket_set_except(ssh_socket s)
{
s->data_except = 1;
}
int ssh_socket_data_available(ssh_socket s)
{
return s->read_wontblock;
}
int ssh_socket_data_writable(ssh_socket s)
{
return s->write_wontblock;
}
/** @internal
* @brief returns the number of outgoing bytes currently buffered
* @param s the socket
* @returns numbers of bytes buffered, or 0 if the socket isn't connected
*/
int ssh_socket_buffered_write_bytes(ssh_socket s)
{
if (s==NULL || s->out_buffer == NULL) {
return 0;
}
return ssh_buffer_get_len(s->out_buffer);
}
int ssh_socket_get_status(ssh_socket s)
{
int r = 0;
if (ssh_buffer_get_len(s->in_buffer) > 0) {
r |= SSH_READ_PENDING;
}
if (ssh_buffer_get_len(s->out_buffer) > 0) {
r |= SSH_WRITE_PENDING;
}
if (s->data_except) {
r |= SSH_CLOSED_ERROR;
}
return r;
}
int ssh_socket_get_poll_flags(ssh_socket s)
{
int r = 0;
if (s->poll_handle != NULL && (ssh_poll_get_events (s->poll_handle) & POLLIN) > 0) {
r |= SSH_READ_PENDING;
}
if (s->poll_handle != NULL && (ssh_poll_get_events (s->poll_handle) & POLLOUT) > 0) {
r |= SSH_WRITE_PENDING;
}
return r;
}
#ifdef _WIN32
int ssh_socket_set_nonblocking(socket_t fd)
{
u_long nonblocking = 1;
return ioctlsocket(fd, FIONBIO, &nonblocking);
}
int ssh_socket_set_blocking(socket_t fd)
{
u_long nonblocking = 0;
return ioctlsocket(fd, FIONBIO, &nonblocking);
}
#else /* _WIN32 */
int ssh_socket_set_nonblocking(socket_t fd)
{
return fcntl(fd, F_SETFL, O_NONBLOCK);
}
int ssh_socket_set_blocking(socket_t fd)
{
return fcntl(fd, F_SETFL, 0);
}
#endif /* _WIN32 */
/**
* @internal
* @brief Launches a socket connection
* If a the socket connected callback has been defined and
* a poll object exists, this call will be non blocking.
* @param s socket to connect.
* @param host hostname or ip address to connect to.
* @param port port number to connect to.
* @param bind_addr address to bind to, or NULL for default.
* @returns SSH_OK socket is being connected.
* @returns SSH_ERROR error while connecting to remote host.
* @bug It only tries connecting to one of the available AI's
* which is problematic for hosts having DNS fail-over.
*/
int ssh_socket_connect(ssh_socket s,
const char *host,
uint16_t port,
const char *bind_addr)
{
socket_t fd;
if (s->state != SSH_SOCKET_NONE) {
ssh_set_error(s->session, SSH_FATAL,
"ssh_socket_connect called on socket not unconnected");
return SSH_ERROR;
}
fd = ssh_connect_host_nonblocking(s->session, host, bind_addr, port);
SSH_LOG(SSH_LOG_PROTOCOL, "Nonblocking connection socket: %d", fd);
if (fd == SSH_INVALID_SOCKET) {
return SSH_ERROR;
}
ssh_socket_set_fd(s,fd);
return SSH_OK;
}
#ifndef _WIN32
/**
* @internal
* @brief executes a command and redirect input and outputs
* @param command command to execute
* @param in input file descriptor
* @param out output file descriptor
*/
void
ssh_execute_command(const char *command, socket_t in, socket_t out)
{
const char *args[] = {"/bin/sh", "-c", command, NULL};
/* Prepare /dev/null socket for the stderr redirection */
int devnull = open("/dev/null", O_WRONLY);
if (devnull == -1) {
SSH_LOG(SSH_LOG_WARNING, "Failed to open /dev/null");
exit(1);
}
/* redirect in and out to stdin, stdout */
dup2(in, 0);
dup2(out, 1);
/* Ignore anything on the stderr */
dup2(devnull, STDERR_FILENO);
close(in);
close(out);
execv(args[0], (char * const *)args);
exit(1);
}
/**
* @internal
* @brief Open a socket on a ProxyCommand
* This call will always be nonblocking.
* @param s socket to connect.
* @param command Command to execute.
* @returns SSH_OK socket is being connected.
* @returns SSH_ERROR error while executing the command.
*/
int
ssh_socket_connect_proxycommand(ssh_socket s, const char *command)
{
socket_t pair[2];
int pid;
int rc;
if (s->state != SSH_SOCKET_NONE) {
return SSH_ERROR;
}
rc = socketpair(PF_UNIX, SOCK_STREAM, 0, pair);
if (rc < 0) {
return SSH_ERROR;
}
SSH_LOG(SSH_LOG_PROTOCOL, "Executing proxycommand '%s'", command);
pid = fork();
if (pid == 0) {
ssh_execute_command(command, pair[0], pair[0]);
/* Does not return */
}
s->proxy_pid = pid;
close(pair[0]);
SSH_LOG(SSH_LOG_PROTOCOL, "ProxyCommand connection pipe: [%d,%d]",pair[0],pair[1]);
ssh_socket_set_fd(s, pair[1]);
s->state=SSH_SOCKET_CONNECTED;
s->fd_is_socket=0;
/* POLLOUT is the event to wait for in a nonblocking connect */
ssh_poll_set_events(ssh_socket_get_poll_handle(s), POLLIN | POLLOUT);
if (s->callbacks && s->callbacks->connected) {
s->callbacks->connected(SSH_SOCKET_CONNECTED_OK, 0, s->callbacks->userdata);
}
return SSH_OK;
}
#endif /* _WIN32 */
/** @} */