1 /* config.c - ldap backend configuration file routine */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2003-2004 The OpenLDAP Foundation.
6 * Portions Copyright 1999-2003 Howard Chu.
7 * Portions Copyright 2000-2003 Pierangelo Masarati.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted only as authorized by the OpenLDAP
14 * A copy of this license is available in the file LICENSE in the
15 * top-level directory of the distribution or, alternatively, at
16 * <http://www.OpenLDAP.org/license.html>.
19 * This work was initially developed by the Howard Chu for inclusion
20 * in OpenLDAP Software and subsequently enhanced by Pierangelo
28 #include <ac/string.h>
29 #include <ac/socket.h>
32 #include "back-ldap.h"
35 /* for advanced URL parsing */
36 #include "../../../libraries/libldap/ldap-int.h"
38 static SLAP_EXTOP_MAIN_FN ldap_back_exop_whoami;
41 parse_idassert( BackendDB *be, const char *fname, int lineno,
42 int argc, char **argv );
52 struct ldapinfo *li = (struct ldapinfo *) be->be_private;
55 fprintf( stderr, "%s: line %d: ldap backend info is null!\n",
60 /* server address to query (depricated, use "uri" directive) */
61 if ( strcasecmp( argv[0], "server" ) == 0 ) {
65 "%s: line %d: \"server <address>\" directive is deprecated\n",
70 "%s: line %d: missing address in \"server <address>\" line\n",
74 if ( li->url != NULL ) {
78 l = strlen( argv[1] ) + STRLENOF( "ldap:///") + 1;
79 li->url = ch_calloc( l, sizeof( char ) );
80 if ( li->url == NULL ) {
81 fprintf( stderr, "%s: line %d: malloc failed\n" );
85 snprintf( li->url, l, "ldap://%s/", argv[1] );
87 /* URI of server to query (preferred over "server" directive) */
88 } else if ( strcasecmp( argv[0], "uri" ) == 0 ) {
93 fprintf( stderr, "%s: line %d: "
95 "in \"uri <uri>\" line\n",
99 if ( li->url != NULL ) {
102 if ( li->lud != NULL ) {
103 ldap_free_urllist( li->lud );
107 /* PARANOID: DN and more are not required nor allowed */
108 urlrc = ldap_url_parselist_ext( &li->lud, argv[ 1 ], "\t" );
110 urlrc = ldap_url_parselist( &li->lud, argv[ 1 ] );
112 if ( urlrc != LDAP_URL_SUCCESS ) {
116 case LDAP_URL_ERR_MEM:
119 case LDAP_URL_ERR_PARAM:
120 why = "parameter is bad";
122 case LDAP_URL_ERR_BADSCHEME:
123 why = "URL doesn't begin with \"[c]ldap[si]://\"";
125 case LDAP_URL_ERR_BADENCLOSURE:
126 why = "URL is missing trailing \">\"";
128 case LDAP_URL_ERR_BADURL:
130 case LDAP_URL_ERR_BADHOST:
131 why = "host/port is bad";
133 case LDAP_URL_ERR_BADATTRS:
134 why = "bad (or missing) attributes";
136 case LDAP_URL_ERR_BADSCOPE:
137 why = "scope string is invalid (or missing)";
139 case LDAP_URL_ERR_BADFILTER:
140 why = "bad or missing filter";
142 case LDAP_URL_ERR_BADEXTS:
143 why = "bad or missing extensions";
146 why = "unknown reason";
149 fprintf( stderr, "%s: line %d: "
150 "unable to parse uri \"%s\" "
151 "in \"uri <uri>\" line: %s\n",
152 fname, lineno, argv[ 1 ], why );
156 for ( i = 0, tmpludp = li->lud;
158 i++, tmpludp = tmpludp->lud_next )
160 if ( ( tmpludp->lud_dn != NULL
161 && tmpludp->lud_dn[0] != '\0' )
162 || tmpludp->lud_attrs != NULL
163 || tmpludp->lud_filter != NULL
164 || tmpludp->lud_exts != NULL )
166 fprintf( stderr, "%s: line %d: "
167 "warning, only protocol, "
168 "host and port allowed "
169 "in \"uri <uri>\" statement "
170 "for uri #%d of \"%s\"\n",
171 fname, lineno, i, argv[1] );
176 for ( tmpludp = li->lud; tmpludp; tmpludp = tmpludp->lud_next ) {
179 ber_len_t oldlen = 0, len;
183 tmplud.lud_attrs = NULL;
184 tmplud.lud_filter = NULL;
185 if ( !ldap_is_ldapi_url( argv[ 1 ] ) ) {
186 tmplud.lud_exts = NULL;
187 tmplud.lud_crit_exts = 0;
190 tmpurl = ldap_url_desc2str( &tmplud );
192 if ( tmpurl == NULL ) {
193 fprintf( stderr, "%s: line %d: "
194 "unable to rebuild uri "
195 "in \"uri <uri>\" statement "
197 fname, lineno, argv[ 1 ] );
201 len = strlen( tmpurl );
203 oldlen = strlen( li->url ) + STRLENOF( " " );
205 li->url = ch_realloc( li->url, oldlen + len + 1);
207 li->url[oldlen - 1] = " ";
209 AC_MEMCPY( &li->url[oldlen], tmpurl, len + 1 );
213 li->url = ch_strdup( argv[ 1 ] );
216 /* name to use for ldap_back_group */
217 } else if ( strcasecmp( argv[0], "acl-authcdn" ) == 0
218 || strcasecmp( argv[0], "binddn" ) == 0 ) {
221 "%s: line %d: missing name in \"%s <name>\" line\n",
222 fname, lineno, argv[0] );
225 ber_str2bv( argv[1], 0, 1, &li->acl_authcDN );
227 /* password to use for ldap_back_group */
228 } else if ( strcasecmp( argv[0], "acl-passwd" ) == 0
229 || strcasecmp( argv[0], "bindpw" ) == 0 ) {
232 "%s: line %d: missing password in \"%s <password>\" line\n",
233 fname, lineno, argv[0] );
236 ber_str2bv( argv[1], 0, 1, &li->acl_passwd );
238 #ifdef LDAP_BACK_PROXY_AUTHZ
239 /* identity assertion stuff... */
240 } else if ( strncasecmp( argv[0], "idassert-", STRLENOF( "idassert-" ) ) == 0
241 || strncasecmp( argv[0], "proxyauthz", STRLENOF( "proxyauthz" ) ) == 0 ) {
242 return parse_idassert( be, fname, lineno, argc, argv );
243 #endif /* LDAP_BACK_PROXY_AUTHZ */
245 /* save bind creds for referral rebinds? */
246 } else if ( strcasecmp( argv[0], "rebind-as-user" ) == 0 ) {
249 "%s: line %d: rebind-as-user takes no arguments\n",
255 /* intercept exop_who_am_i? */
256 } else if ( strcasecmp( argv[0], "proxy-whoami" ) == 0 ) {
259 "%s: line %d: proxy-whoami takes no arguments\n",
263 load_extop( (struct berval *)&slap_EXOP_WHOAMI,
264 0, ldap_back_exop_whoami );
266 /* FIXME: legacy: intercept old rewrite/remap directives
267 * and try to start the rwm overlay */
268 } else if ( strcasecmp( argv[0], "suffixmassage" ) == 0
269 || strcasecmp( argv[0], "map" ) == 0
270 || strncasecmp( argv[0], "rewrite", STRLENOF( "rewrite" ) ) == 0 )
272 fprintf( stderr, "%s: line %d: "
273 "rewrite/remap capabilities have been moved "
274 "to the \"rwm\" overlay; see slapo-rwm(5) "
275 "for details. I'm trying to do my best "
276 "to preserve backwards compatibility...\n",
279 if ( li->rwm_started == 0 ) {
280 if ( overlay_config( be, "rwm" ) ) {
281 fprintf( stderr, "%s: line %d: "
282 "unable to configure the \"rwm\" "
283 "overlay, required by directive "
285 fname, lineno, argv[0] );
286 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
287 fprintf( stderr, "\thint: try loading the \"rwm.la\" dynamic module.\n" );
288 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
292 fprintf( stderr, "%s: line %d: back-ldap: "
293 "automatically starting \"rwm\" overlay, "
294 "triggered by \"%s\" directive.\n",
295 fname, lineno, argv[ 0 ] );
299 return ( *be->bd_info->bi_db_config )( be, fname, lineno, argc, argv );
302 return SLAP_CONF_UNKNOWN;
306 return SLAP_CONF_UNKNOWN;
313 ldap_back_exop_whoami(
317 struct berval *bv = NULL;
319 if ( op->oq_extended.rs_reqdata != NULL ) {
320 /* no request data should be provided */
321 rs->sr_text = "no request data expected";
322 return rs->sr_err = LDAP_PROTOCOL_ERROR;
325 rs->sr_err = backend_check_restrictions( op, rs,
326 (struct berval *)&slap_EXOP_WHOAMI );
327 if( rs->sr_err != LDAP_SUCCESS ) return rs->sr_err;
329 /* if auth'd by back-ldap and request is proxied, forward it */
330 if ( op->o_conn->c_authz_backend && !strcmp(op->o_conn->c_authz_backend->be_type, "ldap" ) && !dn_match(&op->o_ndn, &op->o_conn->c_ndn)) {
333 LDAPControl c, *ctrls[2] = {NULL, NULL};
340 op2.o_ndn = op->o_conn->c_ndn;
341 lc = ldap_back_getconn(&op2, rs);
342 if (!lc || !ldap_back_dobind( lc, op, rs )) {
345 c.ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
346 c.ldctl_iscritical = 1;
347 c.ldctl_value.bv_val = ch_malloc(op->o_ndn.bv_len+4);
348 c.ldctl_value.bv_len = op->o_ndn.bv_len + 3;
349 strcpy(c.ldctl_value.bv_val, "dn:");
350 strcpy(c.ldctl_value.bv_val+3, op->o_ndn.bv_val);
353 rs->sr_err = ldap_whoami(lc->lc_ld, ctrls, NULL, &msgid);
354 if (rs->sr_err == LDAP_SUCCESS) {
355 if (ldap_result(lc->lc_ld, msgid, 1, NULL, &res) == -1) {
356 ldap_get_option(lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
358 if ( rs->sr_err == LDAP_SERVER_DOWN && do_retry ) {
360 if ( ldap_back_retry( lc, op, rs ) )
363 ldap_back_freeconn( op, lc );
367 rs->sr_err = ldap_parse_whoami(lc->lc_ld, res, &bv);
371 ch_free(c.ldctl_value.bv_val);
372 if (rs->sr_err != LDAP_SUCCESS) {
373 rs->sr_err = slap_map_api2result( rs );
376 /* else just do the same as before */
377 bv = (struct berval *) ch_malloc( sizeof(struct berval) );
378 if ( !BER_BVISEMPTY( &op->o_dn ) ) {
379 bv->bv_len = op->o_dn.bv_len + sizeof("dn:") - 1;
380 bv->bv_val = ch_malloc( bv->bv_len + 1 );
381 AC_MEMCPY( bv->bv_val, "dn:", sizeof("dn:") - 1 );
382 AC_MEMCPY( &bv->bv_val[sizeof("dn:") - 1], op->o_dn.bv_val,
384 bv->bv_val[bv->bv_len] = '\0';
396 #ifdef LDAP_BACK_PROXY_AUTHZ
406 struct ldapinfo *li = (struct ldapinfo *) be->be_private;
408 /* identity assertion mode */
409 if ( strcasecmp( argv[0], "idassert-mode" ) == 0 ) {
411 Debug( LDAP_DEBUG_ANY,
412 "%s: line %d: illegal args number %d in \"idassert-mode <args> [<flag> [...]]\" line.\n",
413 fname, lineno, argc );
417 if ( strcasecmp( argv[1], "legacy" ) == 0 ) {
418 /* will proxyAuthz as client's identity only if bound */
419 li->idassert_mode = LDAP_BACK_IDASSERT_LEGACY;
421 } else if ( strcasecmp( argv[1], "self" ) == 0 ) {
422 /* will proxyAuthz as client's identity */
423 li->idassert_mode = LDAP_BACK_IDASSERT_SELF;
425 } else if ( strcasecmp( argv[1], "anonymous" ) == 0 ) {
426 /* will proxyAuthz as anonymous */
427 li->idassert_mode = LDAP_BACK_IDASSERT_ANONYMOUS;
429 } else if ( strcasecmp( argv[1], "none" ) == 0 ) {
430 /* will not proxyAuthz */
431 li->idassert_mode = LDAP_BACK_IDASSERT_NOASSERT;
437 /* will proxyAuthz as argv[1] */
438 ber_str2bv( argv[1], 0, 0, &id );
440 if ( strncasecmp( id.bv_val, "u:", STRLENOF( "u:" ) ) == 0 ) {
441 /* force lowercase... */
443 li->idassert_mode = LDAP_BACK_IDASSERT_OTHERID;
444 ber_dupbv( &li->idassert_authzID, &id );
450 if ( strncasecmp( id.bv_val, "dn:", STRLENOF( "dn:" ) ) == 0 ) {
451 id.bv_val += STRLENOF( "dn:" );
452 id.bv_len -= STRLENOF( "dn:" );
455 rc = dnNormalize( 0, NULL, NULL, &id, &dn, NULL );
456 if ( rc != LDAP_SUCCESS ) {
457 Debug( LDAP_DEBUG_ANY,
458 "%s: line %d: idassert ID \"%s\" is not a valid DN\n",
459 fname, lineno, argv[1] );
463 li->idassert_authzID.bv_len = STRLENOF( "dn:" ) + dn.bv_len;
464 li->idassert_authzID.bv_val = ch_malloc( li->idassert_authzID.bv_len + 1 );
465 AC_MEMCPY( li->idassert_authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
466 AC_MEMCPY( &li->idassert_authzID.bv_val[ STRLENOF( "dn:" ) ], dn.bv_val, dn.bv_len + 1 );
467 ch_free( dn.bv_val );
469 li->idassert_mode = LDAP_BACK_IDASSERT_OTHERDN;
473 for ( argc -= 2, argv += 2; argc--; argv++ ) {
474 if ( strcasecmp( argv[0], "override" ) == 0 ) {
475 li->idassert_flags |= LDAP_BACK_AUTH_OVERRIDE;
478 Debug( LDAP_DEBUG_ANY,
479 "%s: line %d: unknown flag \"%s\" "
480 "in \"idassert-mode <args> "
481 "[<flags>]\" line.\n",
482 fname, lineno, argv[0] );
487 /* name to use for proxyAuthz propagation */
488 } else if ( strcasecmp( argv[0], "idassert-authcdn" ) == 0
489 || strcasecmp( argv[0], "proxyauthzdn" ) == 0 )
494 /* FIXME: "proxyauthzdn" is no longer documented, and
495 * temporarily supported for backwards compatibility */
499 "%s: line %d: missing name in \"%s <name>\" line\n",
500 fname, lineno, argv[0] );
504 if ( !BER_BVISNULL( &li->idassert_authcDN ) ) {
505 fprintf( stderr, "%s: line %d: "
506 "authcDN already defined; replacing...\n",
508 ch_free( li->idassert_authcDN.bv_val );
511 ber_str2bv( argv[1], 0, 0, &dn );
512 rc = dnNormalize( 0, NULL, NULL, &dn, &li->idassert_authcDN, NULL );
513 if ( rc != LDAP_SUCCESS ) {
514 Debug( LDAP_DEBUG_ANY,
515 "%s: line %d: idassert ID \"%s\" is not a valid DN\n",
516 fname, lineno, argv[1] );
520 /* password to use for proxyAuthz propagation */
521 } else if ( strcasecmp( argv[0], "idassert-passwd" ) == 0
522 || strcasecmp( argv[0], "proxyauthzpw" ) == 0 )
524 /* FIXME: "proxyauthzpw" is no longer documented, and
525 * temporarily supported for backwards compatibility */
529 "%s: line %d: missing password in \"%s <password>\" line\n",
530 fname, lineno, argv[0] );
534 if ( !BER_BVISNULL( &li->idassert_passwd ) ) {
535 fprintf( stderr, "%s: line %d: "
536 "passwd already defined; replacing...\n",
538 ch_free( li->idassert_passwd.bv_val );
541 ber_str2bv( argv[1], 0, 1, &li->idassert_passwd );
543 /* rules to accept identity assertion... */
544 } else if ( strcasecmp( argv[0], "idassert-authzFrom" ) == 0 ) {
547 ber_str2bv( argv[1], 0, 1, &rule );
549 ber_bvarray_add( &li->idassert_authz, &rule );
551 } else if ( strcasecmp( argv[0], "idassert-method" ) == 0 ) {
554 "%s: line %d: missing method in \"%s <method>\" line\n",
555 fname, lineno, argv[0] );
559 if ( strcasecmp( argv[1], "none" ) == 0 ) {
560 /* FIXME: is this useful? */
561 li->idassert_authmethod = LDAP_AUTH_NONE;
565 "%s: line %d: trailing args in \"%s %s ...\" line ignored\"\n",
566 fname, lineno, argv[0], argv[1] );
569 } else if ( strcasecmp( argv[1], "simple" ) == 0 ) {
570 li->idassert_authmethod = LDAP_AUTH_SIMPLE;
574 "%s: line %d: trailing args in \"%s %s ...\" line ignored\"\n",
575 fname, lineno, argv[0], argv[1] );
578 } else if ( strcasecmp( argv[1], "sasl" ) == 0 ) {
579 #ifdef HAVE_CYRUS_SASL
582 for ( arg = 2; arg < argc; arg++ ) {
583 if ( strncasecmp( argv[arg], "mech=", STRLENOF( "mech=" ) ) == 0 ) {
584 char *val = argv[arg] + STRLENOF( "mech=" );
586 if ( !BER_BVISNULL( &li->idassert_sasl_mech ) ) {
587 fprintf( stderr, "%s: line %d: "
588 "SASL mech already defined; replacing...\n",
590 ch_free( li->idassert_sasl_mech.bv_val );
592 ber_str2bv( val, 0, 1, &li->idassert_sasl_mech );
594 } else if ( strncasecmp( argv[arg], "realm=", STRLENOF( "realm=" ) ) == 0 ) {
595 char *val = argv[arg] + STRLENOF( "realm=" );
597 if ( !BER_BVISNULL( &li->idassert_sasl_realm ) ) {
598 fprintf( stderr, "%s: line %d: "
599 "SASL realm already defined; replacing...\n",
601 ch_free( li->idassert_sasl_realm.bv_val );
603 ber_str2bv( val, 0, 1, &li->idassert_sasl_realm );
605 } else if ( strncasecmp( argv[arg], "authcdn=", STRLENOF( "authcdn=" ) ) == 0 ) {
606 char *val = argv[arg] + STRLENOF( "authcdn=" );
610 if ( !BER_BVISNULL( &li->idassert_authcDN ) ) {
611 fprintf( stderr, "%s: line %d: "
612 "SASL authcDN already defined; replacing...\n",
614 ch_free( li->idassert_authcDN.bv_val );
616 if ( strncasecmp( argv[arg], "dn:", STRLENOF( "dn:" ) ) == 0 ) {
617 val += STRLENOF( "dn:" );
620 ber_str2bv( val, 0, 0, &dn );
621 rc = dnNormalize( 0, NULL, NULL, &dn, &li->idassert_authcDN, NULL );
622 if ( rc != LDAP_SUCCESS ) {
623 Debug( LDAP_DEBUG_ANY,
624 "%s: line %d: SASL authcdn \"%s\" is not a valid DN\n",
625 fname, lineno, val );
629 } else if ( strncasecmp( argv[arg], "authcid=", STRLENOF( "authcid=" ) ) == 0 ) {
630 char *val = argv[arg] + STRLENOF( "authcid=" );
632 if ( !BER_BVISNULL( &li->idassert_authcID ) ) {
633 fprintf( stderr, "%s: line %d: "
634 "SASL authcID already defined; replacing...\n",
636 ch_free( li->idassert_authcID.bv_val );
638 if ( strncasecmp( argv[arg], "u:", STRLENOF( "u:" ) ) == 0 ) {
639 val += STRLENOF( "u:" );
641 ber_str2bv( val, 0, 1, &li->idassert_authcID );
643 } else if ( strncasecmp( argv[arg], "cred=", STRLENOF( "cred=" ) ) == 0 ) {
644 char *val = argv[arg] + STRLENOF( "cred=" );
646 if ( !BER_BVISNULL( &li->idassert_passwd ) ) {
647 fprintf( stderr, "%s: line %d: "
648 "SASL cred already defined; replacing...\n",
650 ch_free( li->idassert_passwd.bv_val );
652 ber_str2bv( val, 0, 1, &li->idassert_passwd );
654 } else if ( strncasecmp( argv[arg], "authz=", STRLENOF( "authz=" ) ) == 0 ) {
655 char *val = argv[arg] + STRLENOF( "authz=" );
657 if ( strcasecmp( val, "proxyauthz" ) == 0 ) {
658 li->idassert_flags &= ~LDAP_BACK_AUTH_NATIVE_AUTHZ;
660 } else if ( strcasecmp( val, "native" ) == 0 ) {
661 li->idassert_flags |= LDAP_BACK_AUTH_NATIVE_AUTHZ;
664 fprintf( stderr, "%s: line %s: "
665 "unknown authz mode \"%s\"\n",
666 fname, lineno, val );
671 fprintf( stderr, "%s: line %d: "
672 "unknown SASL parameter %s\n",
673 fname, lineno, argv[arg] );
678 li->idassert_authmethod = LDAP_AUTH_SASL;
680 #else /* !HAVE_CYRUS_SASL */
681 fprintf( stderr, "%s: line %d: "
682 "compile --with-cyrus-sasl to enable SASL auth\n",
685 #endif /* !HAVE_CYRUS_SASL */
688 fprintf( stderr, "%s: line %d: "
689 "unhandled idassert-method method %s\n",
690 fname, lineno, argv[1] );
695 return SLAP_CONF_UNKNOWN;
700 #endif /* LDAP_BACK_PROXY_AUTHZ */