1/* opensock.c - open a unix domain socket */
2/* $OpenLDAP$ */
3/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 *
5 * Copyright 2007-2011 The OpenLDAP Foundation.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
10 * Public License.
11 *
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
15 */
16/* ACKNOWLEDGEMENTS:
17 * This work was initially developed by Brian Candler for inclusion
18 * in OpenLDAP Software.
19 */
20
21#include "portable.h"
22
23#include <stdio.h>
24
25#include <ac/errno.h>
26#include <ac/string.h>
27#include <ac/socket.h>
28#include <ac/unistd.h>
29
30#include "slap.h"
31#include "back-sock.h"
32
33/*
34 * FIXME: count the number of concurrent open sockets (since each thread
35 * may open one). Perhaps block here if a soft limit is reached, and fail
36 * if a hard limit reached
37 */
38
39FILE *
40opensock(
41    const char	*sockpath
42)
43{
44	int	fd;
45	FILE	*fp;
46	struct sockaddr_un sockun;
47
48	fd = socket(PF_UNIX, SOCK_STREAM, 0);
49	if ( fd < 0 ) {
50		Debug( LDAP_DEBUG_ANY, "socket create failed\n", 0, 0, 0 );
51		return( NULL );
52	}
53
54	sockun.sun_family = AF_UNIX;
55	sprintf(sockun.sun_path, "%.*s", (int)(sizeof(sockun.sun_path)-1),
56		sockpath);
57	if ( connect( fd, (struct sockaddr *)&sockun, sizeof(sockun) ) < 0 ) {
58		Debug( LDAP_DEBUG_ANY, "socket connect(%s) failed\n",
59			sockpath ? sockpath : "<null>", 0, 0 );
60		close( fd );
61		return( NULL );
62	}
63
64	if ( ( fp = fdopen( fd, "r+" ) ) == NULL ) {
65		Debug( LDAP_DEBUG_ANY, "fdopen failed\n", 0, 0, 0 );
66		close( fd );
67		return( NULL );
68	}
69
70	return( fp );
71}
72