139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/* assuan-socket-connect.c - Assuan socket based client
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* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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*
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* This file is part of Assuan.
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*
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* Assuan is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Assuan is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <unistd.h>
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#include "assuan-defs.h"
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#define LOG(format, args...) \
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fprintf (assuan_get_assuan_log_stream (), \
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assuan_get_assuan_log_prefix (), \
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"%s" format , ## args)
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static int
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do_finish (ASSUAN_CONTEXT ctx)
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{
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if (ctx->inbound.fd != -1)
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{
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close (ctx->inbound.fd);
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}
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ctx->inbound.fd = -1;
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ctx->outbound.fd = -1;
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return 0;
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}
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static void
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do_deinit (ASSUAN_CONTEXT ctx)
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{
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do_finish (ctx);
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}
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/* Make a connection to the Unix domain socket NAME and return a new
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Assuan context in CTX. SERVER_PID is currently not used but may
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become handy in the future. */
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AssuanError
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assuan_socket_connect (ASSUAN_CONTEXT *r_ctx,
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const char *name, pid_t server_pid)
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{
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static struct assuan_io io = { _assuan_simple_read,
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_assuan_simple_write };
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AssuanError err;
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ASSUAN_CONTEXT ctx;
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int fd;
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struct sockaddr_un srvr_addr;
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size_t len;
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if (!r_ctx || !name)
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return ASSUAN_Invalid_Value;
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*r_ctx = NULL;
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/* we require that the name starts with a slash, so that we can
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alter reuse this function for other socket types */
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if (*name != '/')
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return ASSUAN_Invalid_Value;
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if (strlen (name)+1 >= sizeof srvr_addr.sun_path)
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return ASSUAN_Invalid_Value;
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err = _assuan_new_context (&ctx);
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if (err)
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return err;
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ctx->pid = server_pid; /* save it in case we need it later */
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ctx->deinit_handler = do_deinit;
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ctx->finish_handler = do_finish;
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fd = socket (PF_LOCAL, SOCK_STREAM, 0);
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if (fd == -1)
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{
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LOG ("can't create socket: %s\n", strerror (errno));
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_assuan_release_context (ctx);
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return ASSUAN_General_Error;
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}
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memset (&srvr_addr, 0, sizeof srvr_addr);
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srvr_addr.sun_family = AF_LOCAL;
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len = strlen (srvr_addr.sun_path) + 1;
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memcpy (srvr_addr.sun_path, name, len);
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len += (offsetof (struct sockaddr_un, sun_path));
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if (connect (fd, (struct sockaddr *) &srvr_addr, len) == -1)
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{
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LOG ("can't connect to `%s': %s\n", name, strerror (errno));
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_assuan_release_context (ctx);
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close (fd);
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return ASSUAN_Connect_Failed;
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}
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ctx->inbound.fd = fd;
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ctx->outbound.fd = fd;
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ctx->io = &io;
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/* initial handshake */
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{
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int okay, off;
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err = _assuan_read_from_server (ctx, &okay, &off);
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if (err)
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LOG ("can't connect to server: %s\n", assuan_strerror (err));
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else if (okay != 1)
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{
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LOG ("can't connect to server: `");
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_assuan_log_sanitized_string (ctx->inbound.line);
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fprintf (assuan_get_assuan_log_stream (), "'\n");
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err = ASSUAN_Connect_Failed;
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}
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}
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if (err)
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{
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assuan_disconnect (ctx);
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}
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else
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*r_ctx = ctx;
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return 0;
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}
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