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AIX getpeerid support

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This commit is contained in:
Kurt Zeilenga 2005-03-16 02:22:46 +00:00
parent c90998e60d
commit f33af81907
4 changed files with 90 additions and 7 deletions
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13
build/openldap.m4
View File

@ -1334,6 +1334,19 @@ AC_DEFUN(OL_MSGHDR_MSG_ACCRIGHTS,
[define if struct msghdr has msg_accrights])
fi
])dnl
dnl ====================================================================
dnl check for cmsghdr
AC_DEFUN(OL_MSGHDR_MSG_CONTROL,
[AC_CACHE_CHECK(for msg_control in msghdr, ol_cv_msghdr_msg_control,
[AC_TRY_COMPILE([#include <sys/socket.h>],
[struct msghdr m; m.msg_control=(struct cmsghdr *)0],
ol_cv_msghdr_msg_control=yes, ol_cv_msghdr_msg_control=no)
])
if test $ol_cv_msghdr_msg_control = "yes" ; then
AC_DEFINE(HAVE_MSGHDR_MSG_CONTROL,1,
[define if struct msghdr has msg_control])
fi
])dnl
AC_DEFUN([OL_SSL_COMPAT],
[AC_CACHE_CHECK([OpenSSL library version (CRL checking capability)], [ol_cv_ssl_crl_compat],[
AC_EGREP_CPP(__ssl_compat,[

3
configure.in
View File

@ -2519,6 +2519,9 @@ if test "$ac_cv_func_getopt" != yes; then
fi
if test "$ac_cv_func_getpeereid" != yes; then
OL_MSGHDR_MSG_ACCRIGHTS
if test "$ac_cv_func_getpeereid" != yes; then
OL_MSGHDR_MSG_CONTROL
fi
LIBSRCS="$LIBSRCS getpeereid.c"
fi
if test "$ac_cv_func_snprintf" != yes -o "$ac_cv_func_vsnprintf" != yes; then

31
libraries/libldap/os-local.c
View File

@ -156,7 +156,8 @@ ldap_pvt_is_socket_ready(LDAP *ld, int s)
#if !defined(HAVE_GETPEEREID) && \
!defined(SO_PEERCRED) && !defined(LOCAL_PEERCRED) && \
defined(HAVE_SENDMSG) && defined(HAVE_MSGHDR_MSG_ACCRIGHTS)
defined(HAVE_SENDMSG) && (defined(HAVE_MSGHDR_MSG_ACCRIGHTS) || \
defined(HAVE_MSGHDR_MSG_CONTROL))
#define DO_SENDMSG
static const char abandonPDU[] = {LDAP_TAG_MESSAGE, 6,
LDAP_TAG_MSGID, 1, 0, LDAP_REQ_ABANDON, 1, 0};
@ -194,12 +195,40 @@ sendcred:
/* Abandon, noop, has no reply */
struct iovec iov;
struct msghdr msg = {0};
# ifdef HAVE_MSGHDR_MSG_CONTROL
# ifndef CMSG_SPACE
# define CMSG_SPACE(len) (_CMSG_ALIGN( sizeof(struct cmsghdr)) + _CMSG_ALIGN(len) )
# endif
# ifndef CMSG_LEN
# define CMSG_LEN(len) (_CMSG_ALIGN( sizeof(struct cmsghdr)) + (len) )
# endif
union {
struct cmsghdr cm;
unsigned char control[CMSG_SPACE(sizeof(int))];
} control_un;
struct cmsghdr *cmsg;
# endif /* HAVE_MSGHDR_MSG_CONTROL */
msg.msg_name = NULL;
msg.msg_namelen = 0;
iov.iov_base = (char *) abandonPDU;
iov.iov_len = sizeof abandonPDU;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
# ifdef HAVE_MSGHDR_MSG_CONTROL
msg.msg_control = control_un.control;
msg.msg_controllen = sizeof( control_un.control );
msg.msg_flags = 0;
cmsg = CMSG_FIRSTHDR( &msg );
cmsg->cmsg_len = CMSG_LEN( sizeof(int) );
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
*((int *)CMSG_DATA(cmsg)) = fds[0];
# else
msg.msg_accrights = (char *)fds;
msg.msg_accrightslen = sizeof(int);
# endif /* HAVE_MSGHDR_MSG_CONTROL */
sendmsg( s, &msg, 0 );
close(fds[0]);
close(fds[1]);

50
libraries/liblutil/getpeereid.c
View File

@ -32,7 +32,8 @@
#endif
#if !defined(SO_PEERCRED) && !defined(LOCAL_PEERCRED) && \
defined(HAVE_SENDMSG) && defined(HAVE_MSGHDR_MSG_ACCRIGHTS)
defined(HAVE_SENDMSG) && (defined(HAVE_MSGHDR_MSG_ACCRIGHTS) || \
defined(HAVE_MSGHDR_MSG_CONTROL))
#define DO_SENDMSG
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
@ -72,25 +73,62 @@ int getpeereid( int s, uid_t *euid, gid_t *egid )
return 0;
}
#elif defined( DO_SENDMSG )
int dummy, fd[2];
char dummy[8];
int err, fd[2];
struct iovec iov;
struct msghdr msg = {0};
# ifdef HAVE_MSGHDR_MSG_CONTROL
# ifndef CMSG_SPACE
# define CMSG_SPACE(len) (_CMSG_ALIGN(sizeof(struct cmsghdr)) + _CMSG_ALIGN(len))
# endif
# ifndef CMSG_LEN
# define CMSG_LEN(len) (_CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
# endif
union {
struct cmsghdr cm;
unsigned char control[CMSG_SPACE(sizeof(int))];
} control_un;
struct cmsghdr *cmsg;
# endif /* HAVE_MSGHDR_MSG_CONTROL */
struct stat st;
iov.iov_base = (char*) &dummy;
iov.iov_len = 1;
msg.msg_name = NULL;
msg.msg_namelen = 0;
iov.iov_base = dummy;
iov.iov_len = sizeof dummy;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
# ifdef HAVE_MSGHDR_MSG_CONTROL
msg.msg_control = control_un.control;
msg.msg_controllen = sizeof( control_un.control );
cmsg = CMSG_FIRSTHDR( &msg );
/*
* AIX returns a bogus file descriptor if recvmsg() is
* called with MSG_PEEK (is this a bug?). Hence we need
* to receive the Abandon PDU.
*/
if( recvmsg( s, &msg, MSG_WAITALL ) >= 0 &&
cmsg->cmsg_len == CMSG_LEN( sizeof(int) ) &&
cmsg->cmsg_level == SOL_SOCKET &&
cmsg->cmsg_type == SCM_RIGHTS )
# else
msg.msg_accrights = (char *)fd;
msg.msg_accrightslen = sizeof(fd);
if( recvmsg( s, &msg, MSG_PEEK) >= 0 && msg.msg_accrightslen == sizeof(int) )
# endif /* HAVE_MSGHDR_MSG_CONTROL*/
{
/* 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 );
# ifdef HAVE_MSGHDR_MSG_CONTROL
fd[0] = (*(int *)CMSG_DATA( cmsg ));
# endif
err = fstat( fd[0], &st );
close(fd[0]);
if( dummy == 0 && S_ISFIFO(st.st_mode) &&
if( err == 0 && S_ISFIFO(st.st_mode) &&
((st.st_mode & (S_IRWXG|S_IRWXO)) == 0))
{
*euid = st.st_uid;