4 * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
5 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
10 #ifndef HAVE_GETPEEREID
12 #include <sys/types.h>
13 #include <ac/unistd.h>
15 #include <ac/socket.h>
19 #include <sys/ucred.h>
22 #if !defined(SO_PEERCRED) && !defined(LOCAL_PEERCRED) && \
23 defined(HAVE_SENDMSG) && defined(HAVE_MSGHDR_MSG_ACCRIGHTS)
31 int getpeereid( int s, uid_t *euid, gid_t *egid )
34 #if defined( SO_PEERCRED )
35 struct ucred peercred;
36 size_t peercredlen = sizeof peercred;
38 if(( getsockopt( s, SOL_SOCKET, SO_PEERCRED,
39 (void *)&peercred, &peercredlen ) == 0 )
40 && ( peercredlen == sizeof peercred ))
47 #elif defined( LOCAL_PEERCRED )
48 struct xucred peercred;
49 socklen_t peercredlen = sizeof peercred;
51 if(( getsockopt( s, LOCAL_PEERCRED, 1,
52 (void *)&peercred, &peercredlen ) == 0 )
53 && ( peercred.cr_version == XUCRED_VERSION ))
55 *euid = peercred.cr_uid;
56 *egid = peercred.cr_gid;
59 #elif defined( DO_SENDMSG )
62 struct msghdr msg = {0};
65 iov.iov_base = (char*) &dummy;
69 msg.msg_accrights = (char *)fd;
70 msg.msg_accrightslen = sizeof(fd);
71 if( recvmsg( s, &msg, MSG_PEEK) >= 0 && msg.msg_accrightslen == sizeof(int) )
73 /* We must receive a valid descriptor, it must be a pipe,
74 * and it must only be accessible by its owner.
76 dummy = fstat( fd[0], &st );
78 if( dummy == 0 && S_ISFIFO(st.st_mode) &&
79 ((st.st_mode & (S_IRWXG|S_IRWXO)) == 0))
87 #endif /* LDAP_PF_LOCAL */
92 #endif /* HAVE_GETPEEREID */