mirror of
git://git.gnupg.org/gnupg.git
synced 2024-11-11 21:48:50 +01:00
136 lines
3.3 KiB
C
136 lines
3.3 KiB
C
/* assuan-connect.c - Establish a connection (client)
|
|
* Copyright (C) 2001 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GnuPG.
|
|
*
|
|
* GnuPG is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GnuPG 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include "assuan-defs.h"
|
|
|
|
/* Connect to a server over a pipe, creating the assuan context and
|
|
returning it in CTX. The server filename is NAME, the argument
|
|
vector in ARGV. */
|
|
AssuanError
|
|
assuan_pipe_connect (ASSUAN_CONTEXT *ctx, const char *name, char *const argv[])
|
|
{
|
|
static int fixed_signals = 0;
|
|
AssuanError err;
|
|
int rp[2];
|
|
int wp[2];
|
|
int fd[2];
|
|
|
|
if (!name || !argv || !argv[0])
|
|
return ASSUAN_General_Error;
|
|
|
|
if (!fixed_signals)
|
|
{
|
|
struct sigaction act;
|
|
|
|
sigaction (SIGPIPE, NULL, &act);
|
|
if (act.sa_handler == SIG_DFL)
|
|
{
|
|
act.sa_handler = SIG_IGN;
|
|
sigemptyset (&act.sa_mask);
|
|
act.sa_flags = 0;
|
|
sigaction (SIGPIPE, &act, NULL);
|
|
}
|
|
fixed_signals = 1;
|
|
/* FIXME: This is not MT safe */
|
|
}
|
|
|
|
if (pipe (rp) < 0)
|
|
return ASSUAN_General_Error;
|
|
|
|
if (pipe (wp) < 0)
|
|
{
|
|
close (rp[0]);
|
|
close (rp[1]);
|
|
return ASSUAN_General_Error;
|
|
}
|
|
|
|
fd[0] = rp[0]; /* Our inbound is read end of read pipe. */
|
|
fd[1] = wp[1]; /* Our outbound is write end of write pipe. */
|
|
|
|
err = assuan_init_pipe_server (ctx, fd); /* FIXME: Common code should be factored out. */
|
|
if (err)
|
|
{
|
|
close (rp[0]);
|
|
close (rp[1]);
|
|
close (wp[0]);
|
|
close (wp[1]);
|
|
return err;
|
|
}
|
|
|
|
(*ctx)->pid = fork ();
|
|
if ((*ctx)->pid < 0)
|
|
{
|
|
close (rp[0]);
|
|
close (rp[1]);
|
|
close (wp[0]);
|
|
close (wp[1]);
|
|
assuan_deinit_pipe_server (*ctx); /* FIXME: Common code should be factored out. */
|
|
return ASSUAN_General_Error;
|
|
}
|
|
|
|
if ((*ctx)->pid == 0)
|
|
{
|
|
close (rp[0]);
|
|
close (wp[1]);
|
|
if (rp[1] != STDOUT_FILENO)
|
|
{
|
|
dup2 (rp[1], STDOUT_FILENO); /* Child's outbound is write end of read pipe. */
|
|
close (rp[1]);
|
|
}
|
|
if (wp[0] != STDIN_FILENO)
|
|
{
|
|
dup2 (wp[0], STDIN_FILENO); /* Child's inbound is read end of write pipe. */
|
|
close (wp[0]);
|
|
}
|
|
execv (name, argv);
|
|
_exit (1);
|
|
}
|
|
|
|
close (rp[1]);
|
|
close (wp[0]);
|
|
_assuan_read_line (*ctx); /* FIXME: Handshake. */
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
assuan_pipe_disconnect (ASSUAN_CONTEXT ctx)
|
|
{
|
|
_assuan_write_line (ctx, "BYE");
|
|
close (ctx->inbound.fd);
|
|
close (ctx->outbound.fd);
|
|
waitpid (ctx->pid, NULL, 0); /* FIXME Check return value. */
|
|
assuan_deinit_pipe_server (ctx);
|
|
}
|
|
|
|
pid_t
|
|
assuan_get_pid (ASSUAN_CONTEXT ctx)
|
|
{
|
|
return ctx ? ctx->pid : -1;
|
|
}
|