1 /* os-local.c -- platform-specific domain socket code */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2012 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
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>.
16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
17 * All rights reserved.
19 /* Portions (C) Copyright PADL Software Pty Ltd. 1999
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that this notice is preserved
22 * and that due credit is given to PADL Software Pty Ltd. This software
23 * is provided ``as is'' without express or implied warranty.
32 #include <ac/stdlib.h>
35 #include <ac/socket.h>
36 #include <ac/string.h>
38 #include <ac/unistd.h>
40 #ifdef HAVE_SYS_STAT_H
49 #endif /* HAVE_IO_H */
55 #include "ldap_defaults.h"
59 #define oslocal_debug(ld,fmt,arg1,arg2,arg3) \
61 ldap_log_printf(ld, LDAP_DEBUG_TRACE, fmt, arg1, arg2, arg3); \
66 #define oslocal_debug(ld,fmt,arg1,arg2,arg3) ((void)0)
68 #endif /* LDAP_DEBUG */
71 ldap_pvt_set_errno(int err)
77 ldap_pvt_ndelay_on(LDAP *ld, int fd)
79 oslocal_debug(ld, "ldap_ndelay_on: %d\n",fd,0,0);
80 return ber_pvt_socket_set_nonblock( fd, 1 );
84 ldap_pvt_ndelay_off(LDAP *ld, int fd)
86 oslocal_debug(ld, "ldap_ndelay_off: %d\n",fd,0,0);
87 return ber_pvt_socket_set_nonblock( fd, 0 );
91 ldap_pvt_socket(LDAP *ld)
93 ber_socket_t s = socket(PF_LOCAL, SOCK_STREAM, 0);
94 oslocal_debug(ld, "ldap_new_socket: %d\n",s,0,0);
96 fcntl(s, F_SETFD, FD_CLOEXEC);
102 ldap_pvt_close_socket(LDAP *ld, int s)
104 oslocal_debug(ld, "ldap_close_socket: %d\n",s,0,0);
112 "ldap_is_socket_ready: errror on socket %d: errno: %d (%s)\n", \
115 AC_STRERROR_R(errno, ebuf, sizeof ebuf)); \
119 * check the socket for errors after select returned.
122 ldap_pvt_is_socket_ready(LDAP *ld, int s)
124 oslocal_debug(ld, "ldap_is_sock_ready: %d\n",s,0,0);
126 #if defined( notyet ) /* && defined( SO_ERROR ) */
129 ber_socklen_t dummy = sizeof(so_errno);
130 if ( getsockopt( s, SOL_SOCKET, SO_ERROR, &so_errno, &dummy )
136 ldap_pvt_set_errno(so_errno);
145 struct sockaddr_un sa;
147 ber_socklen_t dummy = sizeof(sa);
148 if ( getpeername( s, (struct sockaddr *) &sa, &dummy )
151 /* XXX: needs to be replace with ber_stream_read() */
152 (void)read(s, &ch, 1);
163 #ifdef LDAP_PF_LOCAL_SENDMSG
164 static const char abandonPDU[] = {LDAP_TAG_MESSAGE, 6,
165 LDAP_TAG_MSGID, 1, 0, LDAP_REQ_ABANDON, 1, 0};
169 ldap_pvt_connect(LDAP *ld, ber_socket_t s, struct sockaddr_un *sa, int async)
172 struct timeval tv, *opt_tv = NULL;
174 if ( ld->ld_options.ldo_tm_net.tv_sec >= 0 ) {
175 tv = ld->ld_options.ldo_tm_net;
179 oslocal_debug(ld, "ldap_connect_timeout: fd: %d tm: %ld async: %d\n",
180 s, opt_tv ? tv.tv_sec : -1L, async);
182 if ( ldap_pvt_ndelay_on(ld, s) == -1 ) return -1;
184 if ( connect(s, (struct sockaddr *) sa, sizeof(struct sockaddr_un))
187 if ( ldap_pvt_ndelay_off(ld, s) == -1 ) return -1;
189 #ifdef LDAP_PF_LOCAL_SENDMSG
190 /* Send a dummy message with access rights. Remote side will
191 * obtain our uid/gid by fstat'ing this descriptor. The
192 * descriptor permissions must match exactly, and we also
193 * send the socket name, which must also match.
198 ber_socklen_t salen = sizeof(*sa);
199 if (pipe(fds) == 0) {
200 /* Abandon, noop, has no reply */
202 struct msghdr msg = {0};
203 # ifdef HAVE_STRUCT_MSGHDR_MSG_CONTROL
205 # define CMSG_SPACE(len) (_CMSG_ALIGN( sizeof(struct cmsghdr)) + _CMSG_ALIGN(len) )
208 # define CMSG_LEN(len) (_CMSG_ALIGN( sizeof(struct cmsghdr)) + (len) )
212 unsigned char control[CMSG_SPACE(sizeof(int))];
214 struct cmsghdr *cmsg;
215 # endif /* HAVE_STRUCT_MSGHDR_MSG_CONTROL */
218 iov.iov_base = (char *) abandonPDU;
219 iov.iov_len = sizeof abandonPDU;
222 # ifdef HAVE_STRUCT_MSGHDR_MSG_CONTROL
223 msg.msg_control = control_un.control;
224 msg.msg_controllen = sizeof( control_un.control );
227 cmsg = CMSG_FIRSTHDR( &msg );
228 cmsg->cmsg_len = CMSG_LEN( sizeof(int) );
229 cmsg->cmsg_level = SOL_SOCKET;
230 cmsg->cmsg_type = SCM_RIGHTS;
232 *((int *)CMSG_DATA(cmsg)) = fds[0];
234 msg.msg_accrights = (char *)fds;
235 msg.msg_accrightslen = sizeof(int);
236 # endif /* HAVE_STRUCT_MSGHDR_MSG_CONTROL */
237 getpeername( s, (struct sockaddr *) sa, &salen );
238 fchmod( fds[0], S_ISUID|S_IRWXU );
239 write( fds[1], sa, salen );
240 sendmsg( s, &msg, 0 );
249 if ( errno != EINPROGRESS && errno != EWOULDBLOCK ) return -1;
252 if ( async ) return -2;
258 int timeout = INFTIM;
260 if( opt_tv != NULL ) timeout = TV2MILLISEC( &tv );
263 fd.events = POLL_WRITE;
267 rc = poll( &fd, 1, timeout );
268 } while( rc == AC_SOCKET_ERROR && errno == EINTR &&
269 LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART ));
271 if( rc == AC_SOCKET_ERROR ) return rc;
273 if( fd.revents & POLL_WRITE ) {
274 if ( ldap_pvt_is_socket_ready(ld, s) == -1 ) return -1;
275 if ( ldap_pvt_ndelay_off(ld, s) == -1 ) return -1;
276 #ifdef LDAP_PF_LOCAL_SENDMSG
285 fd_set wfds, *z=NULL;
288 if ( s >= FD_SETSIZE ) {
289 rc = AC_SOCKET_ERROR;
291 ldap_pvt_set_errno( EMFILE );
298 rc = select( ldap_int_tblsize, z, &wfds, z, opt_tv ? &tv : NULL );
299 } while( rc == AC_SOCKET_ERROR && errno == EINTR &&
300 LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART ));
302 if( rc == AC_SOCKET_ERROR ) return rc;
304 if ( FD_ISSET(s, &wfds) ) {
305 if ( ldap_pvt_is_socket_ready(ld, s) == -1 ) return -1;
306 if ( ldap_pvt_ndelay_off(ld, s) == -1 ) return -1;
307 #ifdef LDAP_PF_LOCAL_SENDMSG
316 oslocal_debug(ld, "ldap_connect_timeout: timed out\n",0,0,0);
317 ldap_pvt_set_errno( ETIMEDOUT );
322 ldap_connect_to_path(LDAP *ld, Sockbuf *sb, LDAPURLDesc *srv, int async)
324 struct sockaddr_un server;
327 const char *path = srv->lud_host;
329 oslocal_debug(ld, "ldap_connect_to_path\n",0,0,0);
331 if ( path == NULL || path[0] == '\0' ) {
334 if ( strlen(path) > (sizeof( server.sun_path ) - 1) ) {
335 ldap_pvt_set_errno( ENAMETOOLONG );
340 s = ldap_pvt_socket( ld );
341 if ( s == AC_SOCKET_INVALID ) {
345 oslocal_debug(ld, "ldap_connect_to_path: Trying %s\n", path, 0, 0);
347 memset( &server, '\0', sizeof(server) );
348 server.sun_family = AF_LOCAL;
349 strcpy( server.sun_path, path );
351 rc = ldap_pvt_connect(ld, s, &server, async);
354 rc = ldap_int_connect_cbs( ld, sb, &s, srv, (struct sockaddr *)&server );
357 ldap_pvt_close_socket(ld, s);
363 #endif /* LDAP_PF_LOCAL */