saslauthz.c 51.1 KB
Newer Older
1
/* $OpenLDAP$ */
Kurt Zeilenga's avatar
Kurt Zeilenga committed
2
3
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
Quanah Gibson-Mount's avatar
Quanah Gibson-Mount committed
4
 * Copyright 1998-2020 The OpenLDAP Foundation.
5
 * Portions Copyright 2000 Mark Adamson, Carnegie Mellon.
Kurt Zeilenga's avatar
Kurt Zeilenga committed
6
7
8
9
10
11
12
13
14
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted only as authorized by the OpenLDAP
 * Public License.
 *
 * A copy of this license is available in the file LICENSE in the
 * top-level directory of the distribution or, alternatively, at
 * <http://www.OpenLDAP.org/license.html>.
Kurt Zeilenga's avatar
Kurt Zeilenga committed
15
 */
16
17
18
19

#include "portable.h"

#include <stdio.h>
Kurt Zeilenga's avatar
Kurt Zeilenga committed
20
21
22
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
23

24
#include <ac/stdlib.h>
Kurt Zeilenga's avatar
Kurt Zeilenga committed
25
#include <ac/string.h>
26
#include <ac/ctype.h>
27

Kurt Zeilenga's avatar
Kurt Zeilenga committed
28
29
#include "slap.h"

Pierangelo Masarati's avatar
Pierangelo Masarati committed
30
#include "lutil.h"
31
#include "config.h"
32

33
34
#define SASLREGEX_REPLACE 10

35
36
#define LDAP_X_SCOPE_EXACT	((ber_int_t) 0x0010)
#define LDAP_X_SCOPE_REGEX	((ber_int_t) 0x0020)
37
38
#define LDAP_X_SCOPE_CHILDREN	((ber_int_t) 0x0030)
#define LDAP_X_SCOPE_SUBTREE	((ber_int_t) 0x0040)
39
#define LDAP_X_SCOPE_ONELEVEL	((ber_int_t) 0x0050)
Pierangelo Masarati's avatar
Pierangelo Masarati committed
40
#define LDAP_X_SCOPE_GROUP	((ber_int_t) 0x0060)
41
#define LDAP_X_SCOPE_USERS	((ber_int_t) 0x0070)
42
43

/*
Kurt Zeilenga's avatar
Kurt Zeilenga committed
44
45
 * IDs in DNauthzid form can now have a type specifier, that
 * influences how they are used in related operations.
46
 *
Kurt Zeilenga's avatar
Kurt Zeilenga committed
47
 * syntax: dn[.{exact|regex}]:<val>
48
49
50
51
 *
 * dn.exact:	the value must pass normalization and is used 
 *		in exact DN match.
 * dn.regex:	the value is treated as a regular expression 
Kurt Zeilenga's avatar
Kurt Zeilenga committed
52
 *		in matching DN values in authz{To|From}
53
54
55
56
57
58
 *		attributes.
 * dn:		for backwards compatibility reasons, the value 
 *		is treated as a regular expression, and thus 
 *		it is not normalized nor validated; it is used
 *		in exact or regex comparisons based on the 
 *		context.
Kurt Zeilenga's avatar
Kurt Zeilenga committed
59
60
61
62
63
64
65
66
67
 *
 * IDs in DNauthzid form can now have a type specifier, that
 * influences how they are used in related operations.
 *
 * syntax: u[.mech[/realm]]:<val>
 * 
 * where mech is a SIMPLE, AUTHZ, or a SASL mechanism name
 * and realm is mechanism specific realm (separate to those
 * which are representable as part of the principal).
68
69
 */

70
typedef struct sasl_regexp {
Kurt Zeilenga's avatar
Kurt Zeilenga committed
71
  char *sr_match;						/* regexp match pattern */
72
  char *sr_replace;					/* regexp replace pattern */
73
74
75
76
77
} SaslRegexp_t;

static int nSaslRegexp = 0;
static SaslRegexp_t *SaslRegexp = NULL;

78
79
80
#include "rewrite.h"
struct rewrite_info	*sasl_rwinfo = NULL;
#define AUTHID_CONTEXT	"authid"
81
static BerVarray	authz_rewrites = NULL;
82

83
/* What SASL proxy authorization policies are allowed? */
84
85
86
87
#define	SASL_AUTHZ_NONE	0x00
#define	SASL_AUTHZ_FROM	0x01
#define	SASL_AUTHZ_TO	0x02
#define SASL_AUTHZ_AND	0x10
88

89
90
91
92
static const char *policy_txt[] = {
	"none", "from", "to", "any"
};

93
94
static int authz_policy = SASL_AUTHZ_NONE;

95
96
static int
slap_sasl_match( Operation *opx, struct berval *rule,
97
98
	struct berval *assertDN, struct berval *authc );

99
100
101
102
int slap_sasl_setpolicy( const char *arg )
{
	int rc = LDAP_SUCCESS;

Kurt Zeilenga's avatar
cleanup    
Kurt Zeilenga committed
103
	if ( strcasecmp( arg, "none" ) == 0 ) {
104
		authz_policy = SASL_AUTHZ_NONE;
Kurt Zeilenga's avatar
cleanup    
Kurt Zeilenga committed
105
	} else if ( strcasecmp( arg, "from" ) == 0 ) {
106
		authz_policy = SASL_AUTHZ_FROM;
Kurt Zeilenga's avatar
cleanup    
Kurt Zeilenga committed
107
	} else if ( strcasecmp( arg, "to" ) == 0 ) {
108
		authz_policy = SASL_AUTHZ_TO;
109
	} else if ( strcasecmp( arg, "both" ) == 0 || strcasecmp( arg, "any" ) == 0 ) {
110
		authz_policy = SASL_AUTHZ_FROM | SASL_AUTHZ_TO;
111
112
	} else if ( strcasecmp( arg, "all" ) == 0 ) {
		authz_policy = SASL_AUTHZ_FROM | SASL_AUTHZ_TO | SASL_AUTHZ_AND;
Kurt Zeilenga's avatar
cleanup    
Kurt Zeilenga committed
113
	} else {
114
		rc = LDAP_OTHER;
Kurt Zeilenga's avatar
cleanup    
Kurt Zeilenga committed
115
	}
116
117
118
	return rc;
}

119
120
121
122
123
124
125
126
const char * slap_sasl_getpolicy()
{
	if ( authz_policy == (SASL_AUTHZ_FROM | SASL_AUTHZ_TO | SASL_AUTHZ_AND) )
		return "all";
	else
		return policy_txt[authz_policy];
}

Pierangelo Masarati's avatar
Pierangelo Masarati committed
127
128
129
130
131
int slap_parse_user( struct berval *id, struct berval *user,
		struct berval *realm, struct berval *mech )
{
	char	u;
	
132
	assert( id != NULL );
133
	assert( !BER_BVISNULL( id ) );
134
135
136
	assert( user != NULL );
	assert( realm != NULL );
	assert( mech != NULL );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
137
138
139

	u = id->bv_val[ 0 ];
	
Pierangelo Masarati's avatar
Pierangelo Masarati committed
140
141
142
143
	if ( u != 'u' && u != 'U' ) {
		/* called with something other than u: */
		return LDAP_PROTOCOL_ERROR;
	}
Pierangelo Masarati's avatar
Pierangelo Masarati committed
144

145
146
147
148
	/* uauthzid form:
	 *		u[.mech[/realm]]:user
	 */
	
149
	user->bv_val = ber_bvchr( id, ':' );
150
	if ( BER_BVISNULL( user ) ) {
Pierangelo Masarati's avatar
Pierangelo Masarati committed
151
152
153
154
155
156
		return LDAP_PROTOCOL_ERROR;
	}
	user->bv_val[ 0 ] = '\0';
	user->bv_val++;
	user->bv_len = id->bv_len - ( user->bv_val - id->bv_val );

157
	mech->bv_val = ber_bvchr( id, '.' );
158
	if ( !BER_BVISNULL( mech ) ) {
Pierangelo Masarati's avatar
Pierangelo Masarati committed
159
160
		mech->bv_val[ 0 ] = '\0';
		mech->bv_val++;
161
		mech->bv_len = user->bv_val - mech->bv_val - 1;
162

163
		realm->bv_val = ber_bvchr( mech, '/' );
164

165
		if ( !BER_BVISNULL( realm ) ) {
166
167
			realm->bv_val[ 0 ] = '\0';
			realm->bv_val++;
Pierangelo Masarati's avatar
Pierangelo Masarati committed
168
			mech->bv_len = realm->bv_val - mech->bv_val - 1;
169
			realm->bv_len = user->bv_val - realm->bv_val - 1;
Pierangelo Masarati's avatar
Pierangelo Masarati committed
170
		}
171
172

	} else {
173
		BER_BVZERO( realm );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
174
175
176
177
178
179
	}

	if ( id->bv_val[ 1 ] != '\0' ) {
		return LDAP_PROTOCOL_ERROR;
	}

180
	if ( !BER_BVISNULL( mech ) ) {
181
182
		if ( mech->bv_val != id->bv_val + 2 )
			return LDAP_PROTOCOL_ERROR;
Pierangelo Masarati's avatar
Pierangelo Masarati committed
183

184
		AC_MEMCPY( mech->bv_val - 2, mech->bv_val, mech->bv_len + 1 );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
185
186
187
		mech->bv_val -= 2;
	}

188
	if ( !BER_BVISNULL( realm ) ) {
189
190
		if ( realm->bv_val < id->bv_val + 2 )
			return LDAP_PROTOCOL_ERROR;
Pierangelo Masarati's avatar
Pierangelo Masarati committed
191

192
		AC_MEMCPY( realm->bv_val - 2, realm->bv_val, realm->bv_len + 1 );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
193
194
195
		realm->bv_val -= 2;
	}

Pierangelo Masarati's avatar
Pierangelo Masarati committed
196
197
198
199
200
	/* leave "u:" before user */
	user->bv_val -= 2;
	user->bv_len += 2;
	user->bv_val[ 0 ] = u;
	user->bv_val[ 1 ] = ':';
Pierangelo Masarati's avatar
Pierangelo Masarati committed
201
202
203
204

	return LDAP_SUCCESS;
}

205
206
207
208
int
authzValidate(
	Syntax *syntax,
	struct berval *in )
209
{
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
	struct berval	bv;
	int		rc = LDAP_INVALID_SYNTAX;
	LDAPURLDesc	*ludp = NULL;
	int		scope = -1;

	/*
	 * 1) <DN>
	 * 2) dn[.{exact|children|subtree|onelevel}]:{*|<DN>}
	 * 3) dn.regex:<pattern>
	 * 4) u[.mech[/realm]]:<ID>
	 * 5) group[/<groupClass>[/<memberAttr>]]:<DN>
	 * 6) <URL>
	 */

	assert( in != NULL );
	assert( !BER_BVISNULL( in ) );

	Debug( LDAP_DEBUG_TRACE,
228
		"authzValidate: parsing %s\n", in->bv_val );
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341

	/*
	 * 2) dn[.{exact|children|subtree|onelevel}]:{*|<DN>}
	 * 3) dn.regex:<pattern>
	 *
	 * <DN> must pass DN normalization
	 */
	if ( !strncasecmp( in->bv_val, "dn", STRLENOF( "dn" ) ) ) {
		bv.bv_val = in->bv_val + STRLENOF( "dn" );

		if ( bv.bv_val[ 0 ] == '.' ) {
			bv.bv_val++;

			if ( !strncasecmp( bv.bv_val, "exact:", STRLENOF( "exact:" ) ) ) {
				bv.bv_val += STRLENOF( "exact:" );
				scope = LDAP_X_SCOPE_EXACT;

			} else if ( !strncasecmp( bv.bv_val, "regex:", STRLENOF( "regex:" ) ) ) {
				bv.bv_val += STRLENOF( "regex:" );
				scope = LDAP_X_SCOPE_REGEX;

			} else if ( !strncasecmp( bv.bv_val, "children:", STRLENOF( "children:" ) ) ) {
				bv.bv_val += STRLENOF( "children:" );
				scope = LDAP_X_SCOPE_CHILDREN;

			} else if ( !strncasecmp( bv.bv_val, "subtree:", STRLENOF( "subtree:" ) ) ) {
				bv.bv_val += STRLENOF( "subtree:" );
				scope = LDAP_X_SCOPE_SUBTREE;

			} else if ( !strncasecmp( bv.bv_val, "onelevel:", STRLENOF( "onelevel:" ) ) ) {
				bv.bv_val += STRLENOF( "onelevel:" );
				scope = LDAP_X_SCOPE_ONELEVEL;

			} else {
				return LDAP_INVALID_SYNTAX;
			}

		} else {
			if ( bv.bv_val[ 0 ] != ':' ) {
				return LDAP_INVALID_SYNTAX;
			}
			scope = LDAP_X_SCOPE_EXACT;
			bv.bv_val++;
		}

		bv.bv_val += strspn( bv.bv_val, " " );
		/* jump here in case no type specification was present
		 * and uri was not an URI... HEADS-UP: assuming EXACT */
is_dn:		bv.bv_len = in->bv_len - ( bv.bv_val - in->bv_val );

		/* a single '*' means any DN without using regexes */
		if ( ber_bvccmp( &bv, '*' ) ) {
			/* LDAP_X_SCOPE_USERS */
			return LDAP_SUCCESS;
		}

		switch ( scope ) {
		case LDAP_X_SCOPE_EXACT:
		case LDAP_X_SCOPE_CHILDREN:
		case LDAP_X_SCOPE_SUBTREE:
		case LDAP_X_SCOPE_ONELEVEL:
			return dnValidate( NULL, &bv );

		case LDAP_X_SCOPE_REGEX:
			return LDAP_SUCCESS;
		}

		return rc;

	/*
	 * 4) u[.mech[/realm]]:<ID>
	 */
	} else if ( ( in->bv_val[ 0 ] == 'u' || in->bv_val[ 0 ] == 'U' )
			&& ( in->bv_val[ 1 ] == ':' 
				|| in->bv_val[ 1 ] == '/' 
				|| in->bv_val[ 1 ] == '.' ) )
	{
		char		buf[ SLAP_LDAPDN_MAXLEN ];
		struct berval	id,
				user = BER_BVNULL,
				realm = BER_BVNULL,
				mech = BER_BVNULL;

		if ( sizeof( buf ) <= in->bv_len ) {
			return LDAP_INVALID_SYNTAX;
		}

		id.bv_len = in->bv_len;
		id.bv_val = buf;
		strncpy( buf, in->bv_val, sizeof( buf ) );

		rc = slap_parse_user( &id, &user, &realm, &mech );
		if ( rc != LDAP_SUCCESS ) {
			return LDAP_INVALID_SYNTAX;
		}

		return rc;

	/*
	 * 5) group[/groupClass[/memberAttr]]:<DN>
	 *
	 * <groupClass> defaults to "groupOfNames"
	 * <memberAttr> defaults to "member"
	 * 
	 * <DN> must pass DN normalization
	 */
	} else if ( strncasecmp( in->bv_val, "group", STRLENOF( "group" ) ) == 0 )
	{
		struct berval	group_dn = BER_BVNULL,
				group_oc = BER_BVNULL,
				member_at = BER_BVNULL;

		bv.bv_val = in->bv_val + STRLENOF( "group" );
342
343
		bv.bv_len = in->bv_len - STRLENOF( "group" );
		group_dn.bv_val = ber_bvchr( &bv, ':' );
344
345
346
347
348
349
350
351
352
353
354
355
356
		if ( group_dn.bv_val == NULL ) {
			/* last chance: assume it's a(n exact) DN ... */
			bv.bv_val = in->bv_val;
			scope = LDAP_X_SCOPE_EXACT;
			goto is_dn;
		}
		
		/*
		 * FIXME: we assume that "member" and "groupOfNames"
		 * are present in schema...
		 */
		if ( bv.bv_val[ 0 ] == '/' ) {
			group_oc.bv_val = &bv.bv_val[ 1 ];
357
			group_oc.bv_len = group_dn.bv_val - group_oc.bv_val;
358

359
			member_at.bv_val = ber_bvchr( &group_oc, '/' );
360
361
362
363
364
365
366
367
368
369
370
			if ( member_at.bv_val ) {
				AttributeDescription	*ad = NULL;
				const char		*text = NULL;

				group_oc.bv_len = member_at.bv_val - group_oc.bv_val;
				member_at.bv_val++;
				member_at.bv_len = group_dn.bv_val - member_at.bv_val;
				rc = slap_bv2ad( &member_at, &ad, &text );
				if ( rc != LDAP_SUCCESS ) {
					return rc;
				}
371
			}
372

373
374
			if ( oc_bvfind( &group_oc ) == NULL ) {
				return LDAP_INVALID_SYNTAX;
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
			}
		}

		group_dn.bv_val++;
		group_dn.bv_len = in->bv_len - ( group_dn.bv_val - in->bv_val );

		rc = dnValidate( NULL, &group_dn );
		if ( rc != LDAP_SUCCESS ) {
			return rc;
		}

		return rc;
	}

	/*
	 * ldap:///<base>??<scope>?<filter>
	 * <scope> ::= {base|one|subtree}
	 *
	 * <scope> defaults to "base"
	 * <base> must pass DN normalization
	 * <filter> must pass str2filter()
	 */
	rc = ldap_url_parse( in->bv_val, &ludp );
	switch ( rc ) {
	case LDAP_URL_SUCCESS:
		/* FIXME: the check is pedantic, but I think it's necessary,
		 * because people tend to use things like ldaps:// which
		 * gives the idea SSL is being used.  Maybe we could
		 * accept ldapi:// as well, but the point is that we use
		 * an URL as an easy means to define bits of a search with
		 * little parsing.
		 */
		if ( strcasecmp( ludp->lud_scheme, "ldap" ) != 0 ) {
			/*
			 * must be ldap:///
			 */
			rc = LDAP_INVALID_SYNTAX;
			goto done;
		}
		break;

	case LDAP_URL_ERR_BADSCHEME:
		/*
		 * last chance: assume it's a(n exact) DN ...
		 *
		 * NOTE: must pass DN normalization
		 */
		ldap_free_urldesc( ludp );
		bv.bv_val = in->bv_val;
		scope = LDAP_X_SCOPE_EXACT;
		goto is_dn;

	default:
		rc = LDAP_INVALID_SYNTAX;
		goto done;
	}

	if ( ( ludp->lud_host && *ludp->lud_host )
		|| ludp->lud_attrs || ludp->lud_exts )
	{
		/* host part must be empty */
		/* attrs and extensions parts must be empty */
		rc = LDAP_INVALID_SYNTAX;
		goto done;
	}

	/* Grab the filter */
	if ( ludp->lud_filter ) {
		Filter	*f = str2filter( ludp->lud_filter );
		if ( f == NULL ) {
			rc = LDAP_INVALID_SYNTAX;
			goto done;
		}
		filter_free( f );
	}

	/* Grab the searchbase */
452
453
454
455
456
457
	if ( ludp->lud_dn != NULL ) {
		ber_str2bv( ludp->lud_dn, 0, 0, &bv );
		rc = dnValidate( NULL, &bv );
	} else {
		rc = LDAP_INVALID_SYNTAX;
	}
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488

done:
	ldap_free_urldesc( ludp );
	return( rc );
}

static int
authzPrettyNormal(
	struct berval	*val,
	struct berval	*normalized,
	void		*ctx,
	int		normalize )
{
	struct berval	bv;
	int		rc = LDAP_INVALID_SYNTAX;
	LDAPURLDesc	*ludp = NULL;
	char		*lud_dn = NULL,
			*lud_filter = NULL;
	int		scope = -1;

	/*
	 * 1) <DN>
	 * 2) dn[.{exact|children|subtree|onelevel}]:{*|<DN>}
	 * 3) dn.regex:<pattern>
	 * 4) u[.mech[/realm]]:<ID>
	 * 5) group[/<groupClass>[/<memberAttr>]]:<DN>
	 * 6) <URL>
	 */

	assert( val != NULL );
	assert( !BER_BVISNULL( val ) );
Howard Chu's avatar
Howard Chu committed
489
	BER_BVZERO( normalized );
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657

	/*
	 * 2) dn[.{exact|children|subtree|onelevel}]:{*|<DN>}
	 * 3) dn.regex:<pattern>
	 *
	 * <DN> must pass DN normalization
	 */
	if ( !strncasecmp( val->bv_val, "dn", STRLENOF( "dn" ) ) ) {
		struct berval	out = BER_BVNULL,
				prefix = BER_BVNULL;
		char		*ptr;

		bv.bv_val = val->bv_val + STRLENOF( "dn" );

		if ( bv.bv_val[ 0 ] == '.' ) {
			bv.bv_val++;

			if ( !strncasecmp( bv.bv_val, "exact:", STRLENOF( "exact:" ) ) ) {
				bv.bv_val += STRLENOF( "exact:" );
				scope = LDAP_X_SCOPE_EXACT;

			} else if ( !strncasecmp( bv.bv_val, "regex:", STRLENOF( "regex:" ) ) ) {
				bv.bv_val += STRLENOF( "regex:" );
				scope = LDAP_X_SCOPE_REGEX;

			} else if ( !strncasecmp( bv.bv_val, "children:", STRLENOF( "children:" ) ) ) {
				bv.bv_val += STRLENOF( "children:" );
				scope = LDAP_X_SCOPE_CHILDREN;

			} else if ( !strncasecmp( bv.bv_val, "subtree:", STRLENOF( "subtree:" ) ) ) {
				bv.bv_val += STRLENOF( "subtree:" );
				scope = LDAP_X_SCOPE_SUBTREE;

			} else if ( !strncasecmp( bv.bv_val, "onelevel:", STRLENOF( "onelevel:" ) ) ) {
				bv.bv_val += STRLENOF( "onelevel:" );
				scope = LDAP_X_SCOPE_ONELEVEL;

			} else {
				return LDAP_INVALID_SYNTAX;
			}

		} else {
			if ( bv.bv_val[ 0 ] != ':' ) {
				return LDAP_INVALID_SYNTAX;
			}
			scope = LDAP_X_SCOPE_EXACT;
			bv.bv_val++;
		}

		bv.bv_val += strspn( bv.bv_val, " " );
		/* jump here in case no type specification was present
		 * and uri was not an URI... HEADS-UP: assuming EXACT */
is_dn:		bv.bv_len = val->bv_len - ( bv.bv_val - val->bv_val );

		/* a single '*' means any DN without using regexes */
		if ( ber_bvccmp( &bv, '*' ) ) {
			ber_str2bv_x( "dn:*", STRLENOF( "dn:*" ), 1, normalized, ctx );
			return LDAP_SUCCESS;
		}

		switch ( scope ) {
		case LDAP_X_SCOPE_EXACT:
		case LDAP_X_SCOPE_CHILDREN:
		case LDAP_X_SCOPE_SUBTREE:
		case LDAP_X_SCOPE_ONELEVEL:
			if ( normalize ) {
				rc = dnNormalize( 0, NULL, NULL, &bv, &out, ctx );
			} else {
				rc = dnPretty( NULL, &bv, &out, ctx );
			}
			if( rc != LDAP_SUCCESS ) {
				return LDAP_INVALID_SYNTAX;
			}
			break;

		case LDAP_X_SCOPE_REGEX:
			normalized->bv_len = STRLENOF( "dn.regex:" ) + bv.bv_len;
			normalized->bv_val = ber_memalloc_x( normalized->bv_len + 1, ctx );
			ptr = lutil_strcopy( normalized->bv_val, "dn.regex:" );
			ptr = lutil_strncopy( ptr, bv.bv_val, bv.bv_len );
			ptr[ 0 ] = '\0';
			return LDAP_SUCCESS;

		default:
			return LDAP_INVALID_SYNTAX;
		}

		/* prepare prefix */
		switch ( scope ) {
		case LDAP_X_SCOPE_EXACT:
			BER_BVSTR( &prefix, "dn:" );
			break;

		case LDAP_X_SCOPE_CHILDREN:
			BER_BVSTR( &prefix, "dn.children:" );
			break;

		case LDAP_X_SCOPE_SUBTREE:
			BER_BVSTR( &prefix, "dn.subtree:" );
			break;

		case LDAP_X_SCOPE_ONELEVEL:
			BER_BVSTR( &prefix, "dn.onelevel:" );
			break;

		default:
			assert( 0 );
			break;
		}

		normalized->bv_len = prefix.bv_len + out.bv_len;
		normalized->bv_val = ber_memalloc_x( normalized->bv_len + 1, ctx );
		
		ptr = lutil_strcopy( normalized->bv_val, prefix.bv_val );
		ptr = lutil_strncopy( ptr, out.bv_val, out.bv_len );
		ptr[ 0 ] = '\0';
		ber_memfree_x( out.bv_val, ctx );

		return LDAP_SUCCESS;

	/*
	 * 4) u[.mech[/realm]]:<ID>
	 */
	} else if ( ( val->bv_val[ 0 ] == 'u' || val->bv_val[ 0 ] == 'U' )
			&& ( val->bv_val[ 1 ] == ':' 
				|| val->bv_val[ 1 ] == '/' 
				|| val->bv_val[ 1 ] == '.' ) )
	{
		char		buf[ SLAP_LDAPDN_MAXLEN ];
		struct berval	id,
				user = BER_BVNULL,
				realm = BER_BVNULL,
				mech = BER_BVNULL;

		if ( sizeof( buf ) <= val->bv_len ) {
			return LDAP_INVALID_SYNTAX;
		}

		id.bv_len = val->bv_len;
		id.bv_val = buf;
		strncpy( buf, val->bv_val, sizeof( buf ) );

		rc = slap_parse_user( &id, &user, &realm, &mech );
		if ( rc != LDAP_SUCCESS ) {
			return LDAP_INVALID_SYNTAX;
		}

		ber_dupbv_x( normalized, val, ctx );

		return rc;

	/*
	 * 5) group[/groupClass[/memberAttr]]:<DN>
	 *
	 * <groupClass> defaults to "groupOfNames"
	 * <memberAttr> defaults to "member"
	 * 
	 * <DN> must pass DN normalization
	 */
	} else if ( strncasecmp( val->bv_val, "group", STRLENOF( "group" ) ) == 0 )
	{
		struct berval	group_dn = BER_BVNULL,
				group_oc = BER_BVNULL,
				member_at = BER_BVNULL,
				out = BER_BVNULL;
		char		*ptr;

		bv.bv_val = val->bv_val + STRLENOF( "group" );
658
659
		bv.bv_len = val->bv_len - STRLENOF( "group" );
		group_dn.bv_val = ber_bvchr( &bv, ':' );
660
661
662
663
664
665
666
667
668
669
670
671
		if ( group_dn.bv_val == NULL ) {
			/* last chance: assume it's a(n exact) DN ... */
			bv.bv_val = val->bv_val;
			scope = LDAP_X_SCOPE_EXACT;
			goto is_dn;
		}

		/*
		 * FIXME: we assume that "member" and "groupOfNames"
		 * are present in schema...
		 */
		if ( bv.bv_val[ 0 ] == '/' ) {
672
673
			ObjectClass		*oc = NULL;

674
			group_oc.bv_val = &bv.bv_val[ 1 ];
675
			group_oc.bv_len = group_dn.bv_val - group_oc.bv_val;
676

677
			member_at.bv_val = ber_bvchr( &group_oc, '/' );
678
679
680
681
682
683
684
685
686
687
688
689
690
691
			if ( member_at.bv_val ) {
				AttributeDescription	*ad = NULL;
				const char		*text = NULL;

				group_oc.bv_len = member_at.bv_val - group_oc.bv_val;
				member_at.bv_val++;
				member_at.bv_len = group_dn.bv_val - member_at.bv_val;
				rc = slap_bv2ad( &member_at, &ad, &text );
				if ( rc != LDAP_SUCCESS ) {
					return rc;
				}

				member_at = ad->ad_cname;

692
			}
693

694
695
696
			oc = oc_bvfind( &group_oc );
			if ( oc == NULL ) {
				return LDAP_INVALID_SYNTAX;
697
			}
698
699

			group_oc = oc->soc_cname;
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
		}

		group_dn.bv_val++;
		group_dn.bv_len = val->bv_len - ( group_dn.bv_val - val->bv_val );

		if ( normalize ) {
			rc = dnNormalize( 0, NULL, NULL, &group_dn, &out, ctx );
		} else {
			rc = dnPretty( NULL, &group_dn, &out, ctx );
		}
		if ( rc != LDAP_SUCCESS ) {
			return rc;
		}

		normalized->bv_len = STRLENOF( "group" ":" ) + out.bv_len;
		if ( !BER_BVISNULL( &group_oc ) ) {
			normalized->bv_len += STRLENOF( "/" ) + group_oc.bv_len;
			if ( !BER_BVISNULL( &member_at ) ) {
				normalized->bv_len += STRLENOF( "/" ) + member_at.bv_len;
			}
		}

		normalized->bv_val = ber_memalloc_x( normalized->bv_len + 1, ctx );
		ptr = lutil_strcopy( normalized->bv_val, "group" );
		if ( !BER_BVISNULL( &group_oc ) ) {
			ptr[ 0 ] = '/';
			ptr++;
			ptr = lutil_strncopy( ptr, group_oc.bv_val, group_oc.bv_len );
			if ( !BER_BVISNULL( &member_at ) ) {
				ptr[ 0 ] = '/';
				ptr++;
				ptr = lutil_strncopy( ptr, member_at.bv_val, member_at.bv_len );
			}
		}
		ptr[ 0 ] = ':';
		ptr++;
		ptr = lutil_strncopy( ptr, out.bv_val, out.bv_len );
		ptr[ 0 ] = '\0';
		ber_memfree_x( out.bv_val, ctx );

		return rc;
	}

	/*
	 * ldap:///<base>??<scope>?<filter>
	 * <scope> ::= {base|one|subtree}
	 *
	 * <scope> defaults to "base"
	 * <base> must pass DN normalization
	 * <filter> must pass str2filter()
	 */
	rc = ldap_url_parse( val->bv_val, &ludp );
	switch ( rc ) {
	case LDAP_URL_SUCCESS:
		/* FIXME: the check is pedantic, but I think it's necessary,
		 * because people tend to use things like ldaps:// which
		 * gives the idea SSL is being used.  Maybe we could
		 * accept ldapi:// as well, but the point is that we use
		 * an URL as an easy means to define bits of a search with
		 * little parsing.
		 */
		if ( strcasecmp( ludp->lud_scheme, "ldap" ) != 0 ) {
			/*
			 * must be ldap:///
			 */
			rc = LDAP_INVALID_SYNTAX;
			goto done;
		}

		AC_MEMCPY( ludp->lud_scheme, "ldap", STRLENOF( "ldap" ) );
		break;

	case LDAP_URL_ERR_BADSCHEME:
		/*
		 * last chance: assume it's a(n exact) DN ...
		 *
		 * NOTE: must pass DN normalization
		 */
		ldap_free_urldesc( ludp );
		bv.bv_val = val->bv_val;
		scope = LDAP_X_SCOPE_EXACT;
		goto is_dn;

	default:
		rc = LDAP_INVALID_SYNTAX;
		goto done;
	}

	if ( ( ludp->lud_host && *ludp->lud_host )
		|| ludp->lud_attrs || ludp->lud_exts )
	{
		/* host part must be empty */
		/* attrs and extensions parts must be empty */
		rc = LDAP_INVALID_SYNTAX;
		goto done;
	}

	/* Grab the filter */
	if ( ludp->lud_filter ) {
		struct berval	filterstr;
		Filter		*f;

		lud_filter = ludp->lud_filter;

		f = str2filter( lud_filter );
		if ( f == NULL ) {
			rc = LDAP_INVALID_SYNTAX;
			goto done;
		}
		filter2bv( f, &filterstr );
		filter_free( f );
		if ( BER_BVISNULL( &filterstr ) ) {
			rc = LDAP_INVALID_SYNTAX;
			goto done;
		}

		ludp->lud_filter = filterstr.bv_val;
	}

	/* Grab the searchbase */
	if ( ludp->lud_dn ) {
		struct berval	out = BER_BVNULL;

		lud_dn = ludp->lud_dn;

		ber_str2bv( lud_dn, 0, 0, &bv );
		if ( normalize ) {
			rc = dnNormalize( 0, NULL, NULL, &bv, &out, ctx );
		} else {
			rc = dnPretty( NULL, &bv, &out, ctx );
		}

		if ( rc != LDAP_SUCCESS ) {
			goto done;
		}

		ludp->lud_dn = out.bv_val;
837
838
839
	} else {
		rc = LDAP_INVALID_SYNTAX;
		goto done;
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
	}

	ludp->lud_port = 0;
	normalized->bv_val = ldap_url_desc2str( ludp );
	if ( normalized->bv_val ) {
		normalized->bv_len = strlen( normalized->bv_val );

	} else {
		rc = LDAP_INVALID_SYNTAX;
	}

done:
	if ( lud_filter ) {
		if ( ludp->lud_filter != lud_filter ) {
			ber_memfree( ludp->lud_filter );
		}
		ludp->lud_filter = lud_filter;
	}

	if ( lud_dn ) {
		if ( ludp->lud_dn != lud_dn ) {
			ber_memfree( ludp->lud_dn );
		}
		ludp->lud_dn = lud_dn;
	}

	ldap_free_urldesc( ludp );

	return( rc );
}

int
authzNormalize(
	slap_mask_t	usage,
	Syntax		*syntax,
	MatchingRule	*mr,
	struct berval	*val,
	struct berval	*normalized,
	void		*ctx )
{
	int		rc;

	Debug( LDAP_DEBUG_TRACE, ">>> authzNormalize: <%s>\n",
883
		val->bv_val );
884
885
886
887

	rc = authzPrettyNormal( val, normalized, ctx, 1 );

	Debug( LDAP_DEBUG_TRACE, "<<< authzNormalize: <%s> (%d)\n",
888
		normalized->bv_val, rc );
889
890
891
892
893
894
895
896
897
898
899
900
901
902

	return rc;
}

int
authzPretty(
	Syntax *syntax,
	struct berval *val,
	struct berval *out,
	void *ctx)
{
	int		rc;

	Debug( LDAP_DEBUG_TRACE, ">>> authzPretty: <%s>\n",
903
		val->bv_val );
904
905
906
907

	rc = authzPrettyNormal( val, out, ctx, 0 );

	Debug( LDAP_DEBUG_TRACE, "<<< authzPretty: <%s> (%d)\n",
Howard Chu's avatar
Howard Chu committed
908
		out->bv_val ? out->bv_val : "(null)" , rc );
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929

	return rc;
}


static int
slap_parseURI(
	Operation	*op,
	struct berval	*uri,
	struct berval	*base,
	struct berval	*nbase,
	int		*scope,
	Filter		**filter,
	struct berval	*fstr,
	int		normalize )
{
	struct berval	bv;
	int		rc;
	LDAPURLDesc	*ludp;

	struct berval	idx;
930

931
932
933
934
	assert( uri != NULL && !BER_BVISNULL( uri ) );
	BER_BVZERO( base );
	BER_BVZERO( nbase );
	BER_BVZERO( fstr );
935
936
937
	*scope = -1;
	*filter = NULL;

938
	Debug( LDAP_DEBUG_TRACE,
939
		"slap_parseURI: parsing %s\n", uri->bv_val );
940

Pierangelo Masarati's avatar
Pierangelo Masarati committed
941
	rc = LDAP_PROTOCOL_ERROR;
942

943
944
945
946
	idx = *uri;
	if ( idx.bv_val[ 0 ] == '{' ) {
		char	*ptr;

947
		ptr = ber_bvchr( &idx, '}' ) + 1;
948
949
950
951
952
953
954
955

		assert( ptr != (void *)1 );

		idx.bv_len -= ptr - idx.bv_val;
		idx.bv_val = ptr;
		uri = &idx;
	}

956
957
958
959
960
961
962
	/*
	 * dn[.<dnstyle>]:<dnpattern>
	 * <dnstyle> ::= {exact|regex|children|subtree|onelevel}
	 *
	 * <dnstyle> defaults to "exact"
	 * if <dnstyle> is not "regex", <dnpattern> must pass DN normalization
	 */
963
964
	if ( !strncasecmp( uri->bv_val, "dn", STRLENOF( "dn" ) ) ) {
		bv.bv_val = uri->bv_val + STRLENOF( "dn" );
965

966
967
		if ( bv.bv_val[ 0 ] == '.' ) {
			bv.bv_val++;
968

969
970
			if ( !strncasecmp( bv.bv_val, "exact:", STRLENOF( "exact:" ) ) ) {
				bv.bv_val += STRLENOF( "exact:" );
971
				*scope = LDAP_X_SCOPE_EXACT;
972

973
974
			} else if ( !strncasecmp( bv.bv_val, "regex:", STRLENOF( "regex:" ) ) ) {
				bv.bv_val += STRLENOF( "regex:" );
975
				*scope = LDAP_X_SCOPE_REGEX;
976

977
			} else if ( !strncasecmp( bv.bv_val, "children:", STRLENOF( "children:" ) ) ) {
978
				bv.bv_val += STRLENOF( "children:" );
979
				*scope = LDAP_X_SCOPE_CHILDREN;
980

981
982
			} else if ( !strncasecmp( bv.bv_val, "subtree:", STRLENOF( "subtree:" ) ) ) {
				bv.bv_val += STRLENOF( "subtree:" );
983
				*scope = LDAP_X_SCOPE_SUBTREE;
984

985
986
			} else if ( !strncasecmp( bv.bv_val, "onelevel:", STRLENOF( "onelevel:" ) ) ) {
				bv.bv_val += STRLENOF( "onelevel:" );
987
988
				*scope = LDAP_X_SCOPE_ONELEVEL;

989
990
991
			} else {
				return LDAP_PROTOCOL_ERROR;
			}
992

993
		} else {
Pierangelo Masarati's avatar
cleanup    
Pierangelo Masarati committed
994
			if ( bv.bv_val[ 0 ] != ':' ) {
995
				return LDAP_PROTOCOL_ERROR;
Pierangelo Masarati's avatar
cleanup    
Pierangelo Masarati committed
996
			}
997
			*scope = LDAP_X_SCOPE_EXACT;
998
			bv.bv_val++;
999
		}
1000
1001

		bv.bv_val += strspn( bv.bv_val, " " );
1002
		/* jump here in case no type specification was present
1003
		 * and uri was not an URI... HEADS-UP: assuming EXACT */
1004
is_dn:		bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val);
1005

1006
1007
1008
1009
1010
		/* a single '*' means any DN without using regexes */
		if ( ber_bvccmp( &bv, '*' ) ) {
			*scope = LDAP_X_SCOPE_USERS;
		}

1011
1012
1013
1014
		switch ( *scope ) {
		case LDAP_X_SCOPE_EXACT:
		case LDAP_X_SCOPE_CHILDREN:
		case LDAP_X_SCOPE_SUBTREE:
1015
		case LDAP_X_SCOPE_ONELEVEL:
1016
1017
1018
1019
1020
1021
1022
1023
			if ( normalize ) {
				rc = dnNormalize( 0, NULL, NULL, &bv, nbase, op->o_tmpmemctx );
				if( rc != LDAP_SUCCESS ) {
					*scope = -1;
				}
			} else {
				ber_dupbv_x( nbase, &bv, op->o_tmpmemctx );
				rc = LDAP_SUCCESS;
1024
1025
			}
			break;
1026

1027
1028
		case LDAP_X_SCOPE_REGEX:
			ber_dupbv_x( nbase, &bv, op->o_tmpmemctx );
1029
1030

		case LDAP_X_SCOPE_USERS:
1031
1032
1033
1034
1035
1036
1037
1038
			rc = LDAP_SUCCESS;
			break;

		default:
			*scope = -1;
			break;
		}

Pierangelo Masarati's avatar
Pierangelo Masarati committed
1039
		return rc;
1040

1041
1042
1043
	/*
	 * u:<uid>
	 */
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1044
1045
1046
1047
1048
1049
1050
	} else if ( ( uri->bv_val[ 0 ] == 'u' || uri->bv_val[ 0 ] == 'U' )
			&& ( uri->bv_val[ 1 ] == ':' 
				|| uri->bv_val[ 1 ] == '/' 
				|| uri->bv_val[ 1 ] == '.' ) )
	{
		Connection	c = *op->o_conn;
		char		buf[ SLAP_LDAPDN_MAXLEN ];
1051
		struct berval	id,
Kurt Zeilenga's avatar
Kurt Zeilenga committed
1052
1053
1054
				user = BER_BVNULL,
				realm = BER_BVNULL,
				mech = BER_BVNULL;
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1055
1056
1057
1058
1059

		if ( sizeof( buf ) <= uri->bv_len ) {
			return LDAP_INVALID_SYNTAX;
		}

1060
1061
		id.bv_len = uri->bv_len;
		id.bv_val = buf;
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1062
1063
1064
1065
1066
1067
1068
		strncpy( buf, uri->bv_val, sizeof( buf ) );

		rc = slap_parse_user( &id, &user, &realm, &mech );
		if ( rc != LDAP_SUCCESS ) {
			return rc;
		}

1069
		if ( !BER_BVISNULL( &mech ) ) {
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1070
1071
			c.c_sasl_bind_mech = mech;
		} else {
1072
			BER_BVSTR( &c.c_sasl_bind_mech, "AUTHZ" );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1073
1074
		}
		
1075
		rc = slap_sasl_getdn( &c, op, &user,
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1076
1077
1078
1079
1080
1081
1082
				realm.bv_val, nbase, SLAP_GETDN_AUTHZID );

		if ( rc == LDAP_SUCCESS ) {
			*scope = LDAP_X_SCOPE_EXACT;
		}

		return rc;
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1083

1084
1085
1086
1087
1088
1089
1090
1091
	/*
	 * group[/<groupoc>[/<groupat>]]:<groupdn>
	 *
	 * groupoc defaults to "groupOfNames"
	 * groupat defaults to "member"
	 * 
	 * <groupdn> must pass DN normalization
	 */
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1092
1093
1094
1095
1096
1097
1098
1099
	} else if ( strncasecmp( uri->bv_val, "group", STRLENOF( "group" ) ) == 0 )
	{
		struct berval	group_dn = BER_BVNULL,
				group_oc = BER_BVNULL,
				member_at = BER_BVNULL;
		char		*tmp;

		bv.bv_val = uri->bv_val + STRLENOF( "group" );
1100
1101
		bv.bv_len = uri->bv_len - STRLENOF( "group" );
		group_dn.bv_val = ber_bvchr( &bv, ':' );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1102
1103
1104
1105
1106
1107
1108
1109
1110
		if ( group_dn.bv_val == NULL ) {
			/* last chance: assume it's a(n exact) DN ... */
			bv.bv_val = uri->bv_val;
			*scope = LDAP_X_SCOPE_EXACT;
			goto is_dn;
		}
		
		if ( bv.bv_val[ 0 ] == '/' ) {
			group_oc.bv_val = &bv.bv_val[ 1 ];
1111
			group_oc.bv_len = group_dn.bv_val - group_oc.bv_val;
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1112

1113
			member_at.bv_val = ber_bvchr( &group_oc, '/' );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1114
1115
1116
1117
1118
1119
			if ( member_at.bv_val ) {
				group_oc.bv_len = member_at.bv_val - group_oc.bv_val;
				member_at.bv_val++;
				member_at.bv_len = group_dn.bv_val - member_at.bv_val;

			} else {
1120
				BER_BVSTR( &member_at, SLAPD_GROUP_ATTR );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1121
1122
1123
			}

		} else {
1124
			BER_BVSTR( &group_oc, SLAPD_GROUP_CLASS );
1125
			BER_BVSTR( &member_at, SLAPD_GROUP_ATTR );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1126
1127
1128
1129
		}
		group_dn.bv_val++;
		group_dn.bv_len = uri->bv_len - ( group_dn.bv_val - uri->bv_val );

1130
1131
1132
1133
1134
1135
1136
1137
1138
		if ( normalize ) {
			rc = dnNormalize( 0, NULL, NULL, &group_dn, nbase, op->o_tmpmemctx );
			if ( rc != LDAP_SUCCESS ) {
				*scope = -1;
				return rc;
			}
		} else {
			ber_dupbv_x( nbase, &group_dn, op->o_tmpmemctx );
			rc = LDAP_SUCCESS;
1139
1140
1141
1142
1143
1144
1145
		}
		*scope = LDAP_X_SCOPE_GROUP;

		/* FIXME: caller needs to add value of member attribute
		 * and close brackets twice */
		fstr->bv_len = STRLENOF( "(&(objectClass=)(=" /* )) */ )
			+ group_oc.bv_len + member_at.bv_len;
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1146
1147
		fstr->bv_val = ch_malloc( fstr->bv_len + 1 );

1148
1149
		tmp = lutil_strncopy( fstr->bv_val, "(&(objectClass=" /* )) */ ,
				STRLENOF( "(&(objectClass=" /* )) */ ) );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1150
		tmp = lutil_strncopy( tmp, group_oc.bv_val, group_oc.bv_len );
1151
1152
		tmp = lutil_strncopy( tmp, /* ( */ ")(" /* ) */ ,
				STRLENOF( /* ( */ ")(" /* ) */ ) );
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1153
1154
1155
1156
		tmp = lutil_strncopy( tmp, member_at.bv_val, member_at.bv_len );
		tmp = lutil_strncopy( tmp, "=", STRLENOF( "=" ) );

		return rc;
1157
	}
1158
1159
1160
1161
1162
1163
1164
1165
1166

	/*
	 * ldap:///<base>??<scope>?<filter>
	 * <scope> ::= {base|one|subtree}
	 *
	 * <scope> defaults to "base"
	 * <base> must pass DN normalization
	 * <filter> must pass str2filter()
	 */
1167
	rc = ldap_url_parse( uri->bv_val, &ludp );
1168
1169
	switch ( rc ) {
	case LDAP_URL_SUCCESS:
1170
1171
1172
1173
1174
1175
1176
		/* FIXME: the check is pedantic, but I think it's necessary,
		 * because people tend to use things like ldaps:// which
		 * gives the idea SSL is being used.  Maybe we could
		 * accept ldapi:// as well, but the point is that we use
		 * an URL as an easy means to define bits of a search with
		 * little parsing.
		 */
1177
1178
1179
1180
		if ( strcasecmp( ludp->lud_scheme, "ldap" ) != 0 ) {
			/*
			 * must be ldap:///
			 */
1181
1182
			rc = LDAP_PROTOCOL_ERROR;
			goto done;
1183
1184
1185
1186
		}
		break;

	case LDAP_URL_ERR_BADSCHEME:
1187
1188
1189
1190
1191
		/*
		 * last chance: assume it's a(n exact) DN ...
		 *
		 * NOTE: must pass DN normalization
		 */
1192
		ldap_free_urldesc( ludp );
1193
		bv.bv_val = uri->bv_val;
1194
		*scope = LDAP_X_SCOPE_EXACT;
Howard Chu's avatar
Howard Chu committed
1195
		goto is_dn;
1196

1197
	default:
1198
1199
		rc = LDAP_PROTOCOL_ERROR;
		goto done;
1200
	}
1201

1202
	if ( ( ludp->lud_host && *ludp->lud_host )
Kurt Zeilenga's avatar
Kurt Zeilenga committed
1203
1204
		|| ludp->lud_attrs || ludp->lud_exts )
	{
1205
1206
		/* host part must be empty */
		/* attrs and extensions parts must be empty */
1207
		rc = LDAP_PROTOCOL_ERROR;
Howard Chu's avatar
Howard Chu committed
1208
		goto done;
1209
	}
1210

1211
1212
	/* Grab the scope */
	*scope = ludp->lud_scope;
1213

1214
1215
	/* Grab the filter */
	if ( ludp->lud_filter ) {
1216
		*filter = str2filter_x( op, ludp->lud_filter );
1217
		if ( *filter == NULL ) {
1218
			rc = LDAP_PROTOCOL_ERROR;
Kurt Zeilenga's avatar
Kurt Zeilenga committed
1219
			goto done;
1220
		}
1221
		ber_str2bv( ludp->lud_filter, 0, 0, fstr );
1222
1223
	}

1224
	/* Grab the searchbase */
1225
	ber_str2bv( ludp->lud_dn, 0, 0, base );
1226
1227
1228
1229
1230
1231
	if ( normalize ) {
		rc = dnNormalize( 0, NULL, NULL, base, nbase, op->o_tmpmemctx );
	} else {
		ber_dupbv_x( nbase, base, op->o_tmpmemctx );
		rc = LDAP_SUCCESS;
	}
Kurt Zeilenga's avatar
Kurt Zeilenga committed
1232
1233
1234

done:
	if( rc != LDAP_SUCCESS ) {
1235
1236
1237
1238
		if( *filter ) {
			filter_free_x( op, *filter, 1 );
			*filter = NULL;
		}
1239
1240
		BER_BVZERO( base );
		BER_BVZERO( fstr );
1241
1242
1243
	} else {
		/* Don't free these, return them to caller */
		ludp->lud_filter = NULL;
1244
		ludp->lud_dn = NULL;
1245
	}
1246

1247
1248
	ldap_free_urldesc( ludp );
	return( rc );
1249
1250
}

1251
static int slap_sasl_rewrite_config_argv(
1252
1253
1254
1255
1256
1257
1258
		const char	*fname,
		int		lineno,
		int		argc,
		char		**argv
)
{
	int	rc;
1259
1260
1261
1262
1263
1264
1265
	char	*argv0 = NULL;

	if ( strncasecmp( argv[0], "authid-", STRLENOF( "authid-" ) ) == 0 ) {
		/* strip "authid-" prefix for parsing */
		argv0 = argv[0];
		argv[0] = &argv0[ STRLENOF( "authid-" ) ];
	}
1266
1267
1268

	/* init at first call */
	if ( sasl_rwinfo == NULL ) {
1269
		sasl_rwinfo = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
1270
1271
	}

1272
	rc = rewrite_parse( sasl_rwinfo, fname, lineno, argc, argv );
1273
1274
1275

	if ( argv0 )
		argv[0] = argv0;
1276
1277
1278
1279

	return rc;
}

1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
static int slap_sasl_rewrite_config_bv(
		const char	*fname,
		int		lineno,
		struct berval	bv
)
{
	int rc;
	ConfigArgs ca = { 0 };

	ca.line = bv.bv_val;
	ca.argc = 0;
	config_fp_parse_line( &ca );

	rc = slap_sasl_rewrite_config_argv( fname, lineno, ca.argc, ca.argv );

	ch_free( ca.tline );
	ch_free( ca.argv );

	return rc;
}

static void
slap_sasl_rewrite_bva_add(
		BerVarray	*bva,
		int		idx,
		int		argc,
		char		**argv
)
{
	char		*line, *s;
	struct berval	bv;

	if ( argc > 1 ) {
		/* quote all args but the first */
		line = ldap_charray2str( argv, "\" \"" );
		ber_str2bv( line, 0, 0, &bv );
		s = ber_bvchr( &bv, '"' );
		assert( s != NULL );

		/* move the trailing quote of argv[0] to the end */
		AC_MEMCPY( s, s + 1, bv.bv_len - ( s - bv.bv_val ) );
		bv.bv_val[ bv.bv_len - 1 ] = '"';
	} else {
		ber_str2bv( argv[ 0 ], 0, 1, &bv );
	}

	if ( idx == -1 ) {
		ber_bvarray_add( bva, &bv );
	} else {
		(*bva)[ idx ] = bv;
	}
}

1333
1334
static int
slap_sasl_rewrite_destroy( void )
1335
1336
{
	if ( sasl_rwinfo ) {
Pierangelo Masarati's avatar
Pierangelo Masarati committed
1337
		rewrite_info_delete( &sasl_rwinfo );
1338
1339
1340
1341
1342
1343
		sasl_rwinfo = NULL;
	}

	return 0;
}

1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
int slap_sasl_rewrite_config(
		const char	*fname,
		int		lineno,
		int		argc,
		char		**argv,
		int		valx
)
{
	int	rc, i, last;
	char	*line;
	struct berval bv;
	struct rewrite_info *rw = sasl_rwinfo;

	for ( last = 0; authz_rewrites && !BER_BVISNULL( &authz_rewrites[ last ] ); last++ )
		/* count'em */ ;

	if ( valx == -1 || valx >= last ) {
		valx = -1;
		rc = slap_sasl_rewrite_config_argv( fname, lineno, argc, argv );
		if ( rc == 0 ) {
			slap_sasl_rewrite_bva_add( &authz_rewrites, valx, argc, argv );
		}
		return rc;
	}

	sasl_rwinfo = NULL;

	for ( i = 0; i < valx; i++ )
	{
		rc = slap_sasl_rewrite_config_bv( fname, lineno, authz_rewrites[ i ] );
		assert( rc == 0 );
	}

	rc = slap_sasl_rewrite_config_argv( fname, lineno, argc, argv );
	if ( rc != 0 ) {
		slap_sasl_rewrite_destroy();
		sasl_rwinfo = rw;
		return 1;
	}

	for ( i = valx; authz_rewrites && !BER_BVISNULL( &authz_rewrites[ i ] ); i++ )
	{
		rc = slap_sasl_rewrite_config_bv( fname, lineno, authz_rewrites[ i ] );
		assert( rc == 0 );
	}

	authz_rewrites = ch_realloc( authz_rewrites,
			( last + 2 )*sizeof( struct berval ) );
	BER_BVZERO( &authz_rewrites[ last + 1 ] );

	for ( i = last - 1; i >= valx; i-- )
	{
		authz_rewrites[ i + 1 ] = authz_rewrites[ i ];
	}

	slap_sasl_rewrite_bva_add( &authz_rewrites, valx, argc, argv );

	if ( rw )
		rewrite_info_delete( &rw );

	return rc;
}

int slap_sasl_rewrite_delete( int valx ) {
	int rc, i;

	if ( valx == -1 ) {
		slap_sasl_rewrite_destroy();
		if ( authz_rewrites ) {
			ber_bvarray_free( authz_rewrites );
			authz_rewrites = NULL;
		}
		return 0;
	}

	for ( i = 0; !BER_BVISNULL( &authz_rewrites[ i ] ); i++ )
		/* count'em */ ;

	if ( valx >= i ) {
		return 1;
	}

	ber_memfree( authz_rewrites[ i ].bv_val );
	for ( i = valx; !BER_BVISNULL( &authz_rewrites[ i + 1 ] ); i++ )
	{
		authz_rewrites[ i ] = authz_rewrites[ i + 1 ];
	}
	BER_BVZERO( &authz_rewrites[ i ] );

	slap_sasl_rewrite_destroy();

	for ( i = 0; !BER_BVISNULL( &authz_rewrites[ i ] ); i++ )
	{
		rc = slap_sasl_rewrite_config_bv( "slapd", 0, authz_rewrites[ i ] );
		assert( rc == 0 );
	}

	return rc;
}

int slap_sasl_rewrite_unparse( BerVarray *bva ) {
	if ( authz_rewrites ) {
		return slap_bv_x_ordered_unparse( authz_rewrites, bva );
	}
	return 0;
}

1451
1452
static int
slap_sasl_regexp_rewrite_config(
1453
1454
1455
1456
1457
1458
		struct rewrite_info	**rwinfo,
		const char		*fname,
		int			lineno,
		const char		*match,
		const char		*replace,
		const char		*context )
1459
1460
{
	int	rc;
1461
	char	*argvRule[] = { "rewriteRule", NULL, NULL, ":@", NULL };
1462
	struct rewrite_info *rw = *rwinfo;
1463
1464

	/* init at first call */
1465
	if ( rw == NULL ) {
1466
1467
1468
1469
		char *argvEngine[] = { "rewriteEngine", "on", NULL };
		char *argvContext[] = { "rewriteContext", NULL, NULL };

		/* initialize rewrite engine */
1470
		rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
1471
1472

		/* switch on rewrite engine */
1473
		rc = rewrite_parse( rw, fname, lineno, 2, argvEngine );
1474
		if (rc != LDAP_SUCCESS) {
1475
			goto out;
1476
1477
1478
1479
		}

		/* create generic authid context */
		argvContext[1] = AUTHID_CONTEXT;
1480
		rc = rewrite_parse( rw, fname, lineno, 2, argvContext );
1481
		if (rc != LDAP_SUCCESS) {
1482
			goto out;
1483
1484
1485
1486
		}
	}

	argvRule[1] = (char *)match;
1487
	argvRule[2] = (char *)replace;
1488
1489
1490
1491
1492
1493
1494
	rc = rewrite_parse( rw, fname, lineno, 4, argvRule );
out:
	if (rc == LDAP_SUCCESS) {
		*rwinfo = rw;
	} else {
		rewrite_info_delete( &rw );
	}
1495
1496
1497
1498

	return rc;
}

1499
int slap_sasl_regexp_config( const char *match, const char *replace, int valx )
1500
{
1501
1502
1503
	int i, rc;
	SaslRegexp_t sr;
	struct rewrite_info *rw = NULL;
Kurt Zeilenga's avatar