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/** BEGIN COPYRIGHT BLOCK
* This Program 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; version 2 of the License.
*
* This Program 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.
*
* In addition, as a special exception, Red Hat, Inc. gives You the additional
* right to link the code of this Program with code not covered under the GNU
* General Public License ("Non-GPL Code") and to distribute linked combinations * including the two, subject to the limitations in this paragraph. Non-GPL Code * permitted under this exception must only link to the code of this Program
* through those well defined interfaces identified in the file named EXCEPTION
* found in the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline functions from * the Approved Interfaces without causing the resulting work to be covered by
* the GNU General Public License. Only Red Hat, Inc. may make changes or
* additions to the list of Approved Interfaces. You must obey the GNU General
* Public License in all respects for all of the Program code and other code used
* in conjunction with the Program except the Non-GPL Code covered by this
* exception. If you modify this file, you may extend this exception to your
* version of the file, but you are not obligated to do so. If you do not wish to
* provide this exception without modification, you must delete this exception
* statement from your version and license this file solely under the GPL without
* exception.
*
*
* Copyright (C) 2007 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#if defined(ENABLE_LDAPI)
#if defined(HAVE_GETPEERUCRED)
#include <ucred.h>
#endif
#include <sys/types.h>
#include <unistd.h>
#include <sys/socket.h>
/* nspr secrets - we need to do an end run around nspr
in order to do things it does not support
*/
#include <private/pprio.h>
int slapd_get_socket_peer(PRFileDesc *nspr_fd, uid_t *uid, gid_t *gid)
{
int ret = -1;
int fd = PR_FileDesc2NativeHandle(nspr_fd); /* naughty private func */
#if defined(SO_PEERCRED) /* linux */
struct ucred creds;
socklen_t len = sizeof(creds);
if(0 == getsockopt(fd, SOL_SOCKET, SO_PEERCRED, (void*)&creds, &len ))
{
if(sizeof(creds) == len)
{
if(uid)
*uid = creds.uid;
if(gid)
*gid = creds.gid;
ret = 0;
}
}
#elif defined(HAVE_GETPEERUCRED) /* solaris10 */
ucred_t *creds = 0;
if(0 == getpeerucred(fd, &creds))
{
if(uid)
{
*uid = ucred_getruid(creds);
if(-1 != uid)
ret = 0;
}
if(gid)
{
*gid = ucred_getrgid(creds);
if(-1 == *gid)
ret = -1;
else
ret = 0;
}
ucred_free(creds);
}
#elif defined(HAVE_GETPEEREID) /* osx / some BSDs */
if(0 == getpeereid(fd, &uid, &gid))
ret = 0;
#else /* hpux / Solaris9 / some BSDs - file descriptor cooperative auth */
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
struct msghdr msg;
struct iovec iov;
char dummy[8];
int pass_sd[2];
int rc = 0;
unsigned int retrycnt = 0xffffffff; /* safety net */
int myerrno = 0;
memset((void *)&msg, 0, sizeof(msg));
iov.iov_base = dummy;
iov.iov_len = sizeof(dummy);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_accrights = (caddr_t)&pass_sd;
msg.msg_accrightslen = sizeof(pass_sd); /* Initialize it with 8 bytes.
If recvmsg is successful,
4 is supposed to be returned. */
/*
Since PR_SockOpt_Nonblocking is set to the socket,
recvmsg returns immediately if no data is waiting to be received.
If recvmsg returns an error and EGAIN (== EWOULDBLOCK) is set to errno,
we should retry some time.
*/
while ((rc = recvmsg(fd, &msg, MSG_PEEK)) < 0 && (EAGAIN == (myerrno = errno)) && retrycnt-- >= 0)
;
if (rc >= 0 && msg.msg_accrightslen == sizeof(int))
{
struct stat st;
ret = fstat(pass_sd[0], &st);
if(0 == ret && S_ISFIFO(st.st_mode) &&
0 == (st.st_mode & (S_IRWXG|S_IRWXO)))
{
if(uid)
*uid = st.st_uid;
if(gid)
*gid = st.st_gid;
} else {
ret = -1;
}
}
#endif
return ret;
}
#endif /* ENABLE_LDAPI */
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