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512 lines
13 KiB
C
512 lines
13 KiB
C
/* config.c - ldap backend configuration file routine */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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/* This is an altered version */
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/*
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* Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
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*
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* Permission is granted to anyone to use this software for any purpose
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* on any computer system, and to alter it and redistribute it, subject
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* to the following restrictions:
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*
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* 1. The author is not responsible for the consequences of use of this
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* software, no matter how awful, even if they arise from flaws in it.
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*
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* 2. The origin of this software must not be misrepresented, either by
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* explicit claim or by omission. Since few users ever read sources,
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* credits should appear in the documentation.
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*
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* 3. Altered versions must be plainly marked as such, and must not be
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* misrepresented as being the original software. Since few users
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* ever read sources, credits should appear in the documentation.
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*
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* 4. This notice may not be removed or altered.
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*
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*
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*
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* Copyright 2000, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
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*
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* This software is being modified by Pierangelo Masarati.
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* The previously reported conditions apply to the modified code as well.
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* Changes in the original code are highlighted where required.
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* Credits for the original code go to the author, Howard Chu.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
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#include <ac/socket.h>
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#include "slap.h"
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#include "back-ldap.h"
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#include "lutil.h"
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int
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ldap_back_db_config(
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BackendDB *be,
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const char *fname,
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int lineno,
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int argc,
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char **argv
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)
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{
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struct ldapinfo *li = (struct ldapinfo *) be->be_private;
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if ( li == NULL ) {
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fprintf( stderr, "%s: line %d: ldap backend info is null!\n",
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fname, lineno );
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return( 1 );
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}
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/* server address to query (depricated, use "uri" directive) */
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if ( strcasecmp( argv[0], "server" ) == 0 ) {
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if (argc != 2) {
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fprintf( stderr,
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"%s: line %d: missing address in \"server <address>\" line\n",
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fname, lineno );
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return( 1 );
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}
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if (li->url != NULL)
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ch_free(li->url);
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li->url = ch_calloc(strlen(argv[1]) + 9, sizeof(char));
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if (li->url != NULL) {
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strcpy(li->url, "ldap://");
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strcat(li->url, argv[1]);
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strcat(li->url, "/");
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}
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/* URI of server to query (preferred over "server" directive) */
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} else if ( strcasecmp( argv[0], "uri" ) == 0 ) {
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if (argc != 2) {
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fprintf( stderr,
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"%s: line %d: missing address in \"uri <address>\" line\n",
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fname, lineno );
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return( 1 );
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}
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if (li->url != NULL)
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ch_free(li->url);
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li->url = ch_strdup(argv[1]);
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/* name to use for ldap_back_group */
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} else if ( strcasecmp( argv[0], "binddn" ) == 0 ) {
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if (argc != 2) {
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fprintf( stderr,
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"%s: line %d: missing name in \"binddn <name>\" line\n",
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fname, lineno );
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return( 1 );
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}
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li->binddn = ch_strdup(argv[1]);
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/* password to use for ldap_back_group */
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} else if ( strcasecmp( argv[0], "bindpw" ) == 0 ) {
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if (argc != 2) {
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fprintf( stderr,
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"%s: line %d: missing password in \"bindpw <password>\" line\n",
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fname, lineno );
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return( 1 );
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}
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li->bindpw = ch_strdup(argv[1]);
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/* save bind creds for referral rebinds? */
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} else if ( strcasecmp( argv[0], "rebind-as-user" ) == 0 ) {
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if (argc != 1) {
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fprintf( stderr,
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"%s: line %d: rebind-as-user takes no arguments\n",
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fname, lineno );
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return( 1 );
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}
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li->savecred = 1;
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/* dn massaging */
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} else if ( strcasecmp( argv[0], "suffixmassage" ) == 0 ) {
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BackendDB *tmp_be;
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struct berval bvnc, nvnc, pvnc, brnc, nrnc, prnc;
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#ifdef ENABLE_REWRITE
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int rc;
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#endif /* ENABLE_REWRITE */
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/*
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* syntax:
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*
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* suffixmassage <suffix> <massaged suffix>
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*
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* the <suffix> field must be defined as a valid suffix
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* (or suffixAlias?) for the current database;
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* the <massaged suffix> shouldn't have already been
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* defined as a valid suffix or suffixAlias for the
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* current server
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*/
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if ( argc != 3 ) {
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fprintf( stderr, "%s: line %d: syntax is"
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" \"suffixMassage <suffix>"
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" <massaged suffix>\"\n",
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fname, lineno );
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return( 1 );
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}
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ber_str2bv( argv[1], 0, 0, &bvnc );
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if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc ) != LDAP_SUCCESS ) {
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fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
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fname, lineno, bvnc.bv_val );
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return( 1 );
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}
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tmp_be = select_backend( &nvnc, 0, 0 );
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if ( tmp_be != NULL && tmp_be != be ) {
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fprintf( stderr, "%s: line %d: suffix already in use"
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" by another backend in"
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" \"suffixMassage <suffix>"
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" <massaged suffix>\"\n",
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fname, lineno );
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free( nvnc.bv_val );
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free( pvnc.bv_val );
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return( 1 );
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}
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ber_str2bv( argv[2], 0, 0, &brnc );
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if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc ) != LDAP_SUCCESS ) {
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fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
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fname, lineno, brnc.bv_val );
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free( nvnc.bv_val );
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free( pvnc.bv_val );
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return( 1 );
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}
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#if 0
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tmp_be = select_backend( &nrnc, 0, 0 );
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if ( tmp_be != NULL ) {
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fprintf( stderr, "%s: line %d: massaged suffix"
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" already in use by another backend in"
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" \"suffixMassage <suffix>"
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" <massaged suffix>\"\n",
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fname, lineno );
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free( nvnc.bv_val );
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free( pvnc.bv_val );
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free( nrnc.bv_val );
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free( prnc.bv_val );
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return( 1 );
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}
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#endif
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#ifdef ENABLE_REWRITE
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/*
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* The suffix massaging is emulated by means of the
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* rewrite capabilities
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* FIXME: no extra rewrite capabilities should be added
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* to the database
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*/
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rc = suffix_massage_config( li->rwinfo, &pvnc, &nvnc, &prnc, &nrnc );
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free( nvnc.bv_val );
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free( pvnc.bv_val );
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free( nrnc.bv_val );
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free( prnc.bv_val );
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return( rc );
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#else /* !ENABLE_REWRITE */
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ber_bvarray_add( &li->suffix_massage, &pvnc );
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ber_bvarray_add( &li->suffix_massage, &nvnc );
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ber_bvarray_add( &li->suffix_massage, &prnc );
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ber_bvarray_add( &li->suffix_massage, &nrnc );
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#endif /* !ENABLE_REWRITE */
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/* rewrite stuff ... */
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} else if ( strncasecmp( argv[0], "rewrite", 7 ) == 0 ) {
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#ifdef ENABLE_REWRITE
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return rewrite_parse( li->rwinfo, fname, lineno, argc, argv );
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#else /* !ENABLE_REWRITE */
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fprintf( stderr, "%s: line %d: rewrite capabilities "
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"are not enabled\n", fname, lineno );
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#endif /* !ENABLE_REWRITE */
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/* objectclass/attribute mapping */
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} else if ( strcasecmp( argv[0], "map" ) == 0 ) {
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struct ldapmap *map;
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struct ldapmapping *mapping;
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char *src, *dst;
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if ( argc < 3 || argc > 4 ) {
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fprintf( stderr,
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"%s: line %d: syntax is \"map {objectclass | attribute} [<local> | *] {<foreign> | *}\"\n",
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fname, lineno );
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return( 1 );
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}
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if ( strcasecmp( argv[1], "objectclass" ) == 0 ) {
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map = &li->oc_map;
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} else if ( strcasecmp( argv[1], "attribute" ) == 0 ) {
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map = &li->at_map;
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} else {
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fprintf( stderr, "%s: line %d: syntax is "
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"\"map {objectclass | attribute} [<local> | *] "
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"{<foreign> | *}\"\n",
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fname, lineno );
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return( 1 );
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}
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if ( strcmp( argv[2], "*" ) == 0 ) {
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if ( argc < 4 || strcmp( argv[3], "*" ) == 0 ) {
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map->drop_missing = ( argc < 4 );
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return 0;
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}
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src = dst = argv[3];
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} else if ( argc < 4 ) {
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src = "";
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dst = argv[2];
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} else {
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src = argv[2];
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dst = ( strcmp( argv[3], "*" ) == 0 ? src : argv[3] );
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}
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if ( ( map == &li->at_map )
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&& ( strcasecmp( src, "objectclass" ) == 0
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|| strcasecmp( dst, "objectclass" ) == 0 ) )
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{
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fprintf( stderr,
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"%s: line %d: objectclass attribute cannot be mapped\n",
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fname, lineno );
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}
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mapping = (struct ldapmapping *)ch_calloc( 2,
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sizeof(struct ldapmapping) );
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if ( mapping == NULL ) {
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fprintf( stderr,
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"%s: line %d: out of memory\n",
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fname, lineno );
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return( 1 );
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}
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ber_str2bv( src, 0, 1, &mapping->src );
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ber_str2bv( dst, 0, 1, &mapping->dst );
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mapping[1].src = mapping->dst;
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mapping[1].dst = mapping->src;
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if ( (*src != '\0' &&
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avl_find( map->map, (caddr_t)mapping, mapping_cmp ) != NULL) ||
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avl_find( map->remap, (caddr_t)&mapping[1], mapping_cmp ) != NULL)
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{
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fprintf( stderr,
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"%s: line %d: duplicate mapping found (ignored)\n",
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fname, lineno );
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return 0;
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}
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if ( *src != '\0' )
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avl_insert( &map->map, (caddr_t)mapping,
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mapping_cmp, mapping_dup );
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avl_insert( &map->remap, (caddr_t)&mapping[1],
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mapping_cmp, mapping_dup );
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/* anything else */
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} else {
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fprintf( stderr, "%s: line %d: unknown directive \"%s\" "
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"in ldap database definition (ignored)\n",
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fname, lineno, argv[0] );
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}
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return 0;
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}
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#ifdef ENABLE_REWRITE
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static char *
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suffix_massage_regexize( const char *s )
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{
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char *res, *ptr;
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const char *p, *r;
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int i;
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for ( i = 0, p = s;
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( r = strchr( p, ',' ) ) != NULL;
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p = r + 1, i++ )
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;
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res = ch_calloc( sizeof( char ), strlen( s ) + 4 + 4*i + 1 );
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ptr = lutil_strcopy( res, "(.*)" );
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for ( i = 0, p = s;
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( r = strchr( p, ',' ) ) != NULL;
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p = r + 1 , i++ ) {
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ptr = lutil_strncopy( ptr, p, r - p + 1 );
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ptr = lutil_strcopy( ptr, "[ ]?" );
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if ( r[ 1 ] == ' ' ) {
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r++;
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}
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}
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lutil_strcopy( ptr, p );
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return res;
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}
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static char *
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suffix_massage_patternize( const char *s )
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{
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ber_len_t len;
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char *res;
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len = strlen( s );
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res = ch_calloc( sizeof( char ), len + sizeof( "%1" ) );
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if ( res == NULL ) {
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return NULL;
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}
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strcpy( res, "%1" );
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strcpy( res + sizeof( "%1" ) - 1, s );
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return res;
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}
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int
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suffix_massage_config(
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struct rewrite_info *info,
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struct berval *pvnc,
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struct berval *nvnc,
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struct berval *prnc,
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struct berval *nrnc
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)
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{
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char *rargv[ 5 ];
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int line = 0;
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rargv[ 0 ] = "rewriteEngine";
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rargv[ 1 ] = "on";
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rargv[ 2 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
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rargv[ 0 ] = "rewriteContext";
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rargv[ 1 ] = "default";
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rargv[ 2 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
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rargv[ 0 ] = "rewriteRule";
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rargv[ 1 ] = suffix_massage_regexize( pvnc->bv_val );
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rargv[ 2 ] = suffix_massage_patternize( prnc->bv_val );
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rargv[ 3 ] = ":";
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rargv[ 4 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
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ch_free( rargv[ 1 ] );
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ch_free( rargv[ 2 ] );
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rargv[ 0 ] = "rewriteContext";
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rargv[ 1 ] = "searchResult";
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rargv[ 2 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
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rargv[ 0 ] = "rewriteRule";
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rargv[ 1 ] = suffix_massage_regexize( prnc->bv_val );
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rargv[ 2 ] = suffix_massage_patternize( pvnc->bv_val );
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rargv[ 3 ] = ":";
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rargv[ 4 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
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ch_free( rargv[ 1 ] );
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ch_free( rargv[ 2 ] );
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/*
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* the filter should be rewritten as
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*
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* rewriteRule
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* "(.*)member=([^)]+),o=Foo Bar,[ ]?c=US(.*)"
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* "%1member=%2,dc=example,dc=com%3"
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*
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* where "o=Foo Bar, c=US" is the virtual naming context,
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* and "dc=example, dc=com" is the real naming context
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*/
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rargv[ 0 ] = "rewriteContext";
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rargv[ 1 ] = "searchFilter";
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rargv[ 2 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
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#if 1 /* rewrite filters */
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{
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/*
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* Note: this is far more optimistic than desirable:
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* for any AVA value ending with the virtual naming
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* context the terminal part will be replaced by the
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* real naming context; a better solution would be to
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* walk the filter looking for DN-valued attributes,
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* and only rewrite those that require rewriting
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*/
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char vbuf_[BUFSIZ], *vbuf = vbuf_,
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rbuf_[BUFSIZ], *rbuf = rbuf_;
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int len;
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len = snprintf( vbuf, sizeof( vbuf_ ),
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"(.*)%s\\)(.*)", nvnc->bv_val );
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if ( len == -1 ) {
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/*
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* traditional behavior: snprintf returns -1
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* if buffer is insufficient
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*/
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return -1;
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} else if ( len >= (int)sizeof( vbuf_ ) ) {
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/*
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* C99: snprintf returns the required size
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*/
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vbuf = ch_malloc( len + 1 );
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len = snprintf( vbuf, len,
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"(.*)%s\\)(.*)", nvnc->bv_val );
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assert( len > 0 );
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}
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len = snprintf( rbuf, sizeof( rbuf_ ), "%%1%s)%%2",
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nrnc->bv_val );
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if ( len == -1 ) {
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return -1;
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} else if ( len >= (int)sizeof( rbuf_ ) ) {
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rbuf = ch_malloc( len + 1 );
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len = snprintf( rbuf, sizeof( rbuf_ ), "%%1%s)%%2",
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nrnc->bv_val );
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assert( len > 0 );
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}
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rargv[ 0 ] = "rewriteRule";
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rargv[ 1 ] = vbuf;
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rargv[ 2 ] = rbuf;
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rargv[ 3 ] = ":";
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rargv[ 4 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
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if ( vbuf != vbuf_ ) {
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ch_free( vbuf );
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}
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if ( rbuf != rbuf_ ) {
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ch_free( rbuf );
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}
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}
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#endif /* rewrite filters */
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#if 0 /* "matched" is not normalized */
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rargv[ 0 ] = "rewriteContext";
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rargv[ 1 ] = "matchedDn";
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rargv[ 2 ] = "alias";
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rargv[ 3 ] = "searchResult";
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rargv[ 4 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
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#else /* normalize "matched" */
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rargv[ 0 ] = "rewriteContext";
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rargv[ 1 ] = "matchedDn";
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rargv[ 2 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
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rargv[ 0 ] = "rewriteRule";
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rargv[ 1 ] = suffix_massage_regexize( prnc->bv_val );
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rargv[ 2 ] = suffix_massage_patternize( nvnc->bv_val );
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rargv[ 3 ] = ":";
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rargv[ 4 ] = NULL;
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rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
|
|
ch_free( rargv[ 1 ] );
|
|
ch_free( rargv[ 2 ] );
|
|
#endif /* normalize "matched" */
|
|
|
|
return 0;
|
|
}
|
|
#endif /* ENABLE_REWRITE */
|