151 lines
3.8 KiB
C
151 lines
3.8 KiB
C
/* assuan-socket-connect.c - Assuan socket based client
|
|
* Copyright (C) 2002 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 <stddef.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
#include <unistd.h>
|
|
|
|
#include "assuan-defs.h"
|
|
|
|
#ifdef HAVE_JNLIB_LOGGING
|
|
#include "../jnlib/logging.h"
|
|
#define LOGERROR(a) log_error ((a))
|
|
#define LOGERROR1(a,b) log_error ((a), (b))
|
|
#define LOGERROR2(a,b,c) log_error ((a), (b), (c))
|
|
#define LOGERRORX(a) log_printf ((a))
|
|
#else
|
|
#define LOGERROR(a) fprintf (stderr, (a))
|
|
#define LOGERROR1(a,b) fprintf (stderr, (a), (b))
|
|
#define LOGERROR2(a,b,c) fprintf (stderr, (a), (b), (c))
|
|
#define LOGERRORX(a) fputs ((a), stderror)
|
|
#endif
|
|
|
|
|
|
|
|
static int
|
|
do_finish (ASSUAN_CONTEXT ctx)
|
|
{
|
|
if (ctx->inbound.fd != -1)
|
|
{
|
|
close (ctx->inbound.fd);
|
|
}
|
|
ctx->inbound.fd = -1;
|
|
ctx->outbound.fd = -1;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
do_deinit (ASSUAN_CONTEXT ctx)
|
|
{
|
|
do_finish (ctx);
|
|
}
|
|
|
|
|
|
|
|
/* Make a connection to the Unix domain socket NAME and return a new
|
|
Assuan context in CTX. SERVER_PID is currently not used but may
|
|
becode handy in future. */
|
|
AssuanError
|
|
assuan_socket_connect (ASSUAN_CONTEXT *r_ctx,
|
|
const char *name, pid_t server_pid)
|
|
{
|
|
AssuanError err;
|
|
ASSUAN_CONTEXT ctx;
|
|
int fd;
|
|
struct sockaddr_un srvr_addr;
|
|
size_t len;
|
|
|
|
if (!r_ctx || !name)
|
|
return ASSUAN_Invalid_Value;
|
|
*r_ctx = NULL;
|
|
|
|
/* we require that the name starts with a slash, so that we can
|
|
alter reuse this function for other socket types */
|
|
if (*name != '/')
|
|
return ASSUAN_Invalid_Value;
|
|
if (strlen (name)+1 >= sizeof srvr_addr.sun_path)
|
|
return ASSUAN_Invalid_Value;
|
|
|
|
err = _assuan_new_context (&ctx);
|
|
if (err)
|
|
return err;
|
|
ctx->pid = server_pid; /* save it in case we need it later */
|
|
ctx->deinit_handler = do_deinit;
|
|
ctx->finish_handler = do_finish;
|
|
|
|
fd = socket (AF_UNIX, SOCK_STREAM, 0);
|
|
if (fd == -1)
|
|
{
|
|
LOGERROR1 ("can't create socket: %s\n", strerror (errno));
|
|
_assuan_release_context (ctx);
|
|
return ASSUAN_General_Error;
|
|
}
|
|
|
|
memset (&srvr_addr, 0, sizeof srvr_addr );
|
|
srvr_addr.sun_family = AF_UNIX;
|
|
strcpy (srvr_addr.sun_path, name);
|
|
len = (offsetof (struct sockaddr_un, sun_path)
|
|
+ strlen (srvr_addr.sun_path) + 1);
|
|
|
|
if (connect (fd, (struct sockaddr*)&srvr_addr, len) == -1)
|
|
{
|
|
LOGERROR2 ("can't connect to `%s': %s\n", name, strerror (errno));
|
|
_assuan_release_context (ctx);
|
|
close (fd );
|
|
return ASSUAN_Connect_Failed;
|
|
}
|
|
|
|
ctx->inbound.fd = fd;
|
|
ctx->outbound.fd = fd;
|
|
|
|
/* initial handshake */
|
|
{
|
|
int okay, off;
|
|
|
|
err = _assuan_read_from_server (ctx, &okay, &off);
|
|
if (err)
|
|
{
|
|
LOGERROR1 ("can't connect server: %s\n", assuan_strerror (err));
|
|
}
|
|
else if (okay != 1)
|
|
{
|
|
LOGERROR ("can't connect server: `");
|
|
_assuan_log_sanitized_string (ctx->inbound.line);
|
|
LOGERRORX ("'\n");
|
|
err = ASSUAN_Connect_Failed;
|
|
}
|
|
}
|
|
|
|
if (err)
|
|
{
|
|
assuan_disconnect (ctx);
|
|
}
|
|
else
|
|
*r_ctx = ctx;
|
|
return 0;
|
|
}
|
|
|
|
|