Commit 4472bd8b authored by Kurt Zeilenga's avatar Kurt Zeilenga
Browse files

Need getpeereid.c

parent 350ce5a1
/* getpeereid.c */
/* $OpenLDAP$ */
/*
* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#ifndef HAVE_GETPEEREID
#include <sys/types.h>
#include <ac/unistd.h>
#include <ac/socket.h>
#if HAVE_SYS_UCRED_H
#include <sys/ucred.h>
#endif
#if !defined(SO_PEERCRED) && !defined(LOCAL_PEERCRED) && defined(HAVE_SENDMSG)
#define DO_SENDMSG
#include <sys/stat.h>
#endif
int getpeereid( int s, uid_t *euid, gid_t *egid )
{
#ifdef LDAP_PF_LOCAL
#if defined( SO_PEERCRED )
struct ucred peercred;
size_t peercredlen = sizeof peercred;
if(( getsockopt( s, SOL_SOCKET, SO_PEERCRED,
(void *)&peercred, &peercredlen ) == 0 )
&& ( peercredlen == sizeof peercred ))
{
*euid = peercred.uid;
*egid = peercred.gid;
return 0;
}
#elif defined( LOCAL_PEERCRED )
struct xucred peercred;
socklen_t peercredlen = sizeof peercred;
if(( getsockopt( s, LOCAL_PEERCRED, 1,
(void *)&peercred, &peercredlen ) == 0 )
&& ( peercred.cr_version == XUCRED_VERSION ))
{
*euid = peercred.cr_uid;
*egid = peercred.cr_gid;
return 0;
}
#elif defined( DO_SENDMSG )
int dummy, fd[2];
struct iovec iov = {(char *)&dummy, sizeof(dummy)};
struct msghdr msg = {0};
struct stat st;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_accrights = (char *)fd;
msg.msg_accrightslen = sizeof(fd);
if( recvmsg( s, &msg, 0) >= 0 && msg.msg_accrightslen == sizeof(int) )
{
/* We must receive a valid descriptor, it must be a pipe,
* and it must only be accessible by its owner.
*/
dummy = fstat( fd[0], &st );
close(fd[0]);
if( dummy == 0 && S_ISFIFO(st.st_mode) &&
((st.st_mode & (S_IRWXG|S_IRWXO)) == 0))
{
*euid = st.st_uid;
*egid = st.st_gid;
return 0;
}
}
#endif
#endif
return -1;
}
#endif
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