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129 lines
2.7 KiB
C
129 lines
2.7 KiB
C
/* user.c - set user id, group id and group access list
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*
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* Copyright 1999 by PM Lashley and The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted only
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* as authorized by the OpenLDAP Public License. A copy of this
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* license is available at http://www.OpenLDAP.org/license.html or
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* in file LICENSE in the top-level directory of the distribution.
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*/
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#include "portable.h"
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#if defined(HAVE_PWD_H) && defined(HAVE_GRP_H)
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#include <stdio.h>
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#include <stdlib.h>
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#include <pwd.h>
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#include <grp.h>
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#include <ac/ctype.h>
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#include <ac/unistd.h>
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#include "slap.h"
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/*
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* Set real and effective user id and group id, and group access list
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*/
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void
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slap_init_user( char *user, char *group )
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{
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uid_t uid = (gid_t) -1;
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gid_t gid = (gid_t) -1;
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if ( user ) {
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struct passwd *pwd;
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if ( isdigit( (unsigned char) *user )) {
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uid = atoi( user );
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#ifdef HAVE_GETPWUID
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pwd = getpwuid( uid );
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goto did_getpw;
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#endif
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} else {
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pwd = getpwnam( user );
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did_getpw:
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if ( pwd == NULL ) {
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Debug( LDAP_DEBUG_ANY, "No passwd entry for user %s\n",
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user, 0, 0 );
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exit( 1 );
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}
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if ( uid >= 0 ) {
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free( user );
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user = (pwd != NULL ? ch_strdup( pwd->pw_name ) : NULL);
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} else {
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uid = pwd->pw_uid;
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}
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gid = pwd->pw_gid;
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#ifdef HAVE_ENDPWENT
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endpwent();
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#endif
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}
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}
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if ( group ) {
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struct group *grp;
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if ( isdigit( (unsigned char) *group )) {
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gid = atoi( group );
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#ifdef HAVE_GETGRGID
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grp = getgrgid( gid );
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goto did_group;
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#endif
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} else {
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grp = getgrnam( group );
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if ( grp != NULL )
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gid = grp->gr_gid;
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did_group:
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if ( grp == NULL ) {
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Debug( LDAP_DEBUG_ANY, "No group entry for group %s\n",
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group, 0, 0 );
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exit( 1 );
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}
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}
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free( group );
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}
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if ( user ) {
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if ( getuid() == 0 && initgroups( user, gid ) != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"Could not set the group access (gid) list\n", 0, 0, 0 );
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exit( 1 );
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}
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free( user );
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}
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#ifdef HAVE_ENDGRENT
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endgrent();
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#endif
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if ( gid >= 0 ) {
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if ( setgid( gid ) != 0 ) {
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Debug( LDAP_DEBUG_ANY, "Could not set real group id to %d\n",
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gid, 0, 0 );
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exit( 1 );
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}
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if ( setegid( gid ) != 0 ) {
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Debug( LDAP_DEBUG_ANY, "Could not set effective group id to %d\n",
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gid, 0, 0 );
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exit( 1 );
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}
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}
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if ( uid >= 0 ) {
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if ( setuid( uid ) != 0 ) {
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Debug( LDAP_DEBUG_ANY, "Could not set effective user id to %d\n",
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uid, 0, 0 );
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exit( 1 );
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}
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if ( seteuid( uid ) != 0 ) {
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Debug( LDAP_DEBUG_ANY, "Could not set real user id to %d\n",
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uid, 0, 0 );
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exit( 1 );
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}
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}
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}
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#endif /* HAVE_PWD_H && HAVE_GRP_H */
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