-/*
- * Copyright notice from original mutt:
- * Copyright (C) 2000 Manoj Kasichainula <manoj@io.com>
- * Copyright (C) 2001,2005 Brendan Cully <brendan@kublai.com>
- *
- * This file is part of mutt-ng, see http://www.muttng.org/.
- * It's licensed under the GNU General Public License,
- * please see the file GPL in the top level source directory.
- */
-
-#if HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <lib-lib/mem.h>
-#include <lib-lib/str.h>
-#include <lib-lib/macros.h>
-
-#include "mutt.h"
-#include "mutt_socket.h"
-#include "mutt_tunnel.h"
-
-
-#include <netinet/in.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/wait.h>
-#include <fcntl.h>
-#include <errno.h>
-
-/* -- data types -- */
-typedef struct {
- pid_t pid;
- int readfd;
- int writefd;
-} TUNNEL_DATA;
-
-/* forward declarations */
-static int tunnel_socket_open (CONNECTION *);
-static int tunnel_socket_close (CONNECTION *);
-static int tunnel_socket_read (CONNECTION * conn, char *buf, size_t len);
-static int tunnel_socket_write (CONNECTION * conn, const char *buf,
- size_t len);
-
-/* -- public functions -- */
-int mutt_tunnel_socket_setup (CONNECTION * conn)
-{
- conn->conn_open = tunnel_socket_open;
- conn->conn_close = tunnel_socket_close;
- conn->conn_read = tunnel_socket_read;
- conn->conn_write = tunnel_socket_write;
-
- return 0;
-}
-
-static int tunnel_socket_open (CONNECTION * conn)
-{
- TUNNEL_DATA *tunnel;
- int pid;
- int rc;
- int pin[2], pout[2];
-
- tunnel = p_new(TUNNEL_DATA, 1);
- conn->sockdata = tunnel;
-
- mutt_message (_("Connecting with \"%s\"..."), Tunnel);
-
- if ((rc = pipe (pin)) == -1) {
- mutt_perror ("pipe");
- return -1;
- }
- if ((rc = pipe (pout)) == -1) {
- mutt_perror ("pipe");
- return -1;
- }
-
- mutt_block_signals_system ();
- if ((pid = fork ()) == 0) {
- mutt_unblock_signals_system (0);
- if (dup2 (pout[0], STDIN_FILENO) < 0 || dup2 (pin[1], STDOUT_FILENO) < 0)
- _exit (127);
- close (pin[0]);
- close (pin[1]);
- close (pout[0]);
- close (pout[1]);
- close (STDERR_FILENO);
-
- /* Don't let the subprocess think it can use the controlling tty */
- setsid ();
-
- execl ("/bin/sh", "sh", "-c", Tunnel, NULL);
- _exit (127);
- }
- mutt_unblock_signals_system (1);
-
- if (pid == -1) {
- close (pin[0]);
- close (pin[1]);
- close (pout[0]);
- close (pout[1]);
- mutt_perror ("fork");
- return -1;
- }
- if (close (pin[1]) < 0 || close (pout[0]) < 0)
- mutt_perror ("close");
-
- fcntl (pin[0], F_SETFD, FD_CLOEXEC);
- fcntl (pout[1], F_SETFD, FD_CLOEXEC);
-
- tunnel->readfd = pin[0];
- tunnel->writefd = pout[1];
- tunnel->pid = pid;
-
- conn->fd = 42; /* stupid hack */
-
- return 0;
-}
-
-static int tunnel_socket_close (CONNECTION * conn)
-{
- TUNNEL_DATA *tunnel = (TUNNEL_DATA *) conn->sockdata;
- int status;
-
- close (tunnel->readfd);
- close (tunnel->writefd);
- waitpid (tunnel->pid, &status, 0);
- if (!WIFEXITED(status) || WEXITSTATUS(status)) {
- mutt_error(_("Tunnel to %s returned error %d (%s)"),
- conn->account.host, WEXITSTATUS(status),
- NONULL(mutt_strsysexit(WEXITSTATUS(status))));
- mutt_sleep (2);
- }
- p_delete(&conn->sockdata);
- return 0;
-}
-
-static int tunnel_socket_read (CONNECTION * conn, char *buf, size_t len)
-{
- TUNNEL_DATA *tunnel = (TUNNEL_DATA *) conn->sockdata;
- int rc;
-
- rc = read (tunnel->readfd, buf, len);
- if (rc == -1) {
- mutt_error (_("Tunnel error talking to %s: %s"), conn->account.host,
- strerror (errno));
- mutt_sleep (1);
- }
-
- return rc;
-}
-
-static int tunnel_socket_write (CONNECTION * conn, const char *buf,
- size_t len)
-{
- TUNNEL_DATA *tunnel = (TUNNEL_DATA *) conn->sockdata;
- int rc;
-
- rc = write (tunnel->writefd, buf, len);
- if (rc == -1) {
- mutt_error (_("Tunnel error talking to %s: %s"), conn->account.host,
- strerror (errno));
- mutt_sleep (1);
- }
-
- return rc;
-}