unique.c 31.5 KB
Newer Older
1
2
3
4
/* unique.c - attribute uniqueness module */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
Kurt Zeilenga's avatar
Kurt Zeilenga committed
5
 * Copyright 2004-2007 The OpenLDAP Foundation.
6
 * Portions Copyright 2004,2006-2007 Symas Corporation.
7
8
9
10
11
12
13
14
15
16
 * 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>.
 */
17
18
19
20
21
/* ACKNOWLEDGEMENTS: 
 * This work was initially developed by Symas Corporation for
 * inclusion in OpenLDAP Software, with subsequent enhancements by
 * Matthew Backes at Symas Corporation.  This work was sponsored by
 * Hewlett-Packard.
22
23
24
25
26
27
28
29
30
31
32
33
 */

#include "portable.h"

#ifdef SLAPD_OVER_UNIQUE

#include <stdio.h>

#include <ac/string.h>
#include <ac/socket.h>

#include "slap.h"
34
#include "config.h"
35

36
37
#define UNIQUE_DEFAULT_URI ("ldap:///??sub")

38
39
40
static slap_overinst unique;

typedef struct unique_attrs_s {
41
	struct unique_attrs_s *next;	      /* list of attrs */
42
43
44
	AttributeDescription *attr;
} unique_attrs;

45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
typedef struct unique_domain_uri_s {
	struct unique_domain_uri_s *next;
	struct berval *dn;
	struct berval *ndn;
	struct berval *filter;
	struct unique_attrs_s *attrs;
	int scope;
} unique_domain_uri;

typedef struct unique_domain_s {
	struct unique_domain_s *next;
	struct berval *domain_spec;
	struct unique_domain_uri_s *uri;
	char ignore;                          /* polarity of attributes */
	char strict;                          /* null considered unique too */
} unique_domain;

62
typedef struct unique_data_s {
63
64
65
	struct unique_domain_s *domains;
	struct unique_domain_s *legacy;
	char legacy_strict_set;
66
67
68
} unique_data;

typedef struct unique_counter_s {
69
	struct berval *ndn;
70
71
72
	int count;
} unique_counter;

73
74
75
76
enum {
	UNIQUE_BASE = 1,
	UNIQUE_IGNORE,
	UNIQUE_ATTR,
77
78
	UNIQUE_STRICT,
	UNIQUE_URI
79
80
};

81
82
83
84
static ConfigDriver unique_cf_base;
static ConfigDriver unique_cf_attrs;
static ConfigDriver unique_cf_strict;
static ConfigDriver unique_cf_uri;
85
86
87

static ConfigTable uniquecfg[] = {
	{ "unique_base", "basedn", 2, 2, 0, ARG_DN|ARG_MAGIC|UNIQUE_BASE,
88
	  unique_cf_base, "( OLcfgOvAt:10.1 NAME 'olcUniqueBase' "
89
	  "DESC 'Subtree for uniqueness searches' "
90
	  "EQUALITY distinguishedNameMatch "
91
92
	  "SYNTAX OMsDN SINGLE-VALUE )", NULL, NULL },
	{ "unique_ignore", "attribute...", 2, 0, 0, ARG_MAGIC|UNIQUE_IGNORE,
93
	  unique_cf_attrs, "( OLcfgOvAt:10.2 NAME 'olcUniqueIgnore' "
94
	  "DESC 'Attributes for which uniqueness shall not be enforced' "
95
96
97
	  "EQUALITY caseIgnoreMatch "
	  "ORDERING caseIgnoreOrderingMatch "
	  "SUBSTR caseIgnoreSubstringsMatch "
98
99
	  "SYNTAX OMsDirectoryString )", NULL, NULL },
	{ "unique_attributes", "attribute...", 2, 0, 0, ARG_MAGIC|UNIQUE_ATTR,
100
	  unique_cf_attrs, "( OLcfgOvAt:10.3 NAME 'olcUniqueAttribute' "
101
	  "DESC 'Attributes for which uniqueness shall be enforced' "
102
	  "EQUALITY caseIgnoreMatch "
103
104
	  "ORDERING caseIgnoreOrderingMatch "
	  "SUBSTR caseIgnoreSubstringsMatch "
105
	  "SYNTAX OMsDirectoryString )", NULL, NULL },
106
107
	{ "unique_strict", "on|off", 1, 2, 0, ARG_MAGIC|UNIQUE_STRICT,
	  unique_cf_strict, "( OLcfgOvAt:10.4 NAME 'olcUniqueStrict' "
108
	  "DESC 'Enforce uniqueness of null values' "
109
	  "EQUALITY booleanMatch "
110
	  "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
111
112
113
114
115
116
117
	{ "unique_uri", "ldapuri", 2, 3, 0, ARG_MAGIC|UNIQUE_URI,
	  unique_cf_uri, "( OLcfgOvAt:10.5 NAME 'olcUniqueURI' "
	  "DESC 'List of keywords and LDAP URIs for a uniqueness domain' "
	  "EQUALITY caseExactMatch "
	  "ORDERING caseExactOrderingMatch "
	  "SUBSTR caseExactSubstringsMatch "
	  "SYNTAX OMsDirectoryString )", NULL, NULL },
118
119
120
121
122
123
124
125
126
	{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
};

static ConfigOCs uniqueocs[] = {
	{ "( OLcfgOvOc:10.1 "
	  "NAME 'olcUniqueConfig' "
	  "DESC 'Attribute value uniqueness configuration' "
	  "SUP olcOverlayConfig "
	  "MAY ( olcUniqueBase $ olcUniqueIgnore $ "
127
128
	  "olcUniqueAttribute $ olcUniqueStrict $ "
	  "olcUniqueURI ) )",
129
130
131
132
	  Cft_Overlay, uniquecfg },
	{ NULL, 0, NULL }
};

133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
static void
unique_free_domain_uri ( unique_domain_uri *uri )
{
	unique_domain_uri *next_uri = NULL;
	unique_attrs *attr, *next_attr = NULL;

	while ( uri ) {
		next_uri = uri->next;
		ber_bvfree ( uri->dn );
		ber_bvfree ( uri->ndn );
		ber_bvfree ( uri->filter );
		attr = uri->attrs;
		while ( attr ) {
			next_attr = attr->next;
			ch_free (attr);
			attr = next_attr;
		}
		ch_free ( uri );
		uri = next_uri;
	}
}

/* free an entire stack of domains */
static void
unique_free_domain ( unique_domain *domain )
{
	unique_domain *next_domain = NULL;

	while ( domain ) {
		next_domain = domain->next;
		ber_bvfree ( domain->domain_spec );
		unique_free_domain_uri ( domain->uri );
		ch_free ( domain );
		domain = next_domain;
	}
}

170
static int
171
172
173
unique_new_domain_uri ( unique_domain_uri **urip,
			const LDAPURLDesc *url_desc,
			ConfigArgs *c )
174
{
175
176
177
	int i, rc = LDAP_SUCCESS;
	unique_domain_uri *uri;
	struct berval bv = {0, NULL};
178
	BackendDB *be = (BackendDB *)c->be;
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
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
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
	char ** attr_str;
	AttributeDescription * ad;
	const char * text;

	uri = ch_calloc ( 1, sizeof ( unique_domain_uri ) );

	if ( url_desc->lud_dn && url_desc->lud_dn[0] ) {
		ber_str2bv( url_desc->lud_dn, 0, 1, &bv );
		rc = dnPrettyNormal( NULL,
				     &bv,
				     uri->dn,
				     uri->ndn,
				     NULL );
		if ( rc != LDAP_SUCCESS ) {
			snprintf( c->cr_msg, sizeof( c->cr_msg ),
				  "<%s> invalid DN %d (%s)",
				  url_desc->lud_dn, rc, ldap_err2string( rc ));
			rc = ARG_BAD_CONF;
			goto exit;
		}

		if ( !dnIsSuffix ( uri->ndn, &be->be_nsuffix[0] ) ) {
			sprintf ( c->cr_msg,
				  "dn <%s> is not a suffix of backend base dn <%s>",
				  uri->dn->bv_val,
				  be->be_nsuffix[0].bv_val );
			rc = ARG_BAD_CONF;
			goto exit;
		}
	}

	attr_str = url_desc->lud_attrs;
	if ( attr_str ) {
		for ( i=0; attr_str[i]; ++i ) {
			unique_attrs * attr;
			ad = NULL;
			if ( slap_str2ad ( attr_str[i], &ad, &text )
			     == LDAP_SUCCESS) {
				attr = ch_calloc ( 1,
						   sizeof ( unique_attrs ) );
				attr->attr = ad;
				attr->next = uri->attrs;
				uri->attrs = attr;
			} else {
				snprintf( c->cr_msg, sizeof( c->cr_msg ),
					  "unique: attribute: %s: %s",
					  attr_str[i], text );
				rc = ARG_BAD_CONF;
				goto exit;
			}
		}
	}

	uri->scope = url_desc->lud_scope;
	if ( !uri->scope ) {
		snprintf( c->cr_msg, sizeof( c->cr_msg ),
			  "unique: uri with base scope will always be unique");
		rc = ARG_BAD_CONF;
		goto exit;
	}

	if (url_desc->lud_filter) {
		Filter * f;
		uri->filter = ber_str2bv( url_desc->lud_filter, 0, 1, NULL);
		f = str2filter( uri->filter->bv_val );
		if ( !f ) {
			snprintf( c->cr_msg, sizeof( c->cr_msg ),
				  "unique: bad filter");
			rc = ARG_BAD_CONF;
			goto exit;
		}
		filter_free( f );
	}
exit:
	if ( bv.bv_val ) ber_memfree ( bv.bv_val );
	uri->next = *urip;
	*urip = uri;
	if ( rc ) {
		Debug ( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
			"%s: %s\n", c->log, c->cr_msg, 0 );
		unique_free_domain_uri ( uri );
		*urip = NULL;
	}
	return rc;
}

static int
unique_new_domain_uri_basic ( unique_domain_uri **urip,
			      ConfigArgs *c )
{
	LDAPURLDesc *url_desc = NULL;
	int rc;

	rc = ldap_url_parse ( UNIQUE_DEFAULT_URI, &url_desc );
	if ( rc ) return rc;
	rc = unique_new_domain_uri ( urip, url_desc, c );
	ldap_free_urldesc ( url_desc );
	return rc;
}

/* if *domain is non-null, it's pushed down the stack.
 * note that the entire stack is freed if there is an error,
 * so build added domains in a separate stack before adding them
 *
 * domain_specs look like
 *
 * [strict ][ignore ]uri[[ uri]...]
 * e.g. "ldap:///ou=foo,o=bar?uid?sub ldap:///ou=baz,o=bar?uid?sub"
 *      "strict ldap:///ou=accounts,o=bar?uid,uidNumber?one"
 *      etc
 *
 * so finally strictness is per-domain
 * but so is ignore-state, and that would be better as a per-url thing
 */
static int
unique_new_domain ( unique_domain **domainp,
		    char *domain_spec,
		    ConfigArgs *c )
{
	char *uri_start;
	int rc = LDAP_SUCCESS;
	int uri_err = 0;
	unique_domain * domain;
	LDAPURLDesc *url_desc, *url_descs = NULL;

	Debug(LDAP_DEBUG_TRACE, "==> unique_new_domain <%s>\n",
	      domain_spec, 0, 0);

	domain = ch_calloc ( 1, sizeof (unique_domain) );
	domain->domain_spec = ber_str2bv( domain_spec, 0, 1, NULL );

	uri_start = domain_spec;
	if ( strncasecmp ( uri_start, "ignore ",
			   STRLENOF( "ignore " ) ) == 0 ) {
		domain->ignore = 1;
		uri_start += STRLENOF( "ignore " );
	}
	if ( strncasecmp ( uri_start, "strict ",
			   STRLENOF( "strict " ) ) == 0 ) {
		domain->strict = 1;
		uri_start += STRLENOF( "strict " );
		if ( !domain->ignore
		     && strncasecmp ( uri_start, "ignore ",
				      STRLENOF( "ignore " ) ) == 0 ) {
			domain->ignore = 1;
			uri_start += STRLENOF( "ignore " );
		}
	}
	rc = ldap_url_parselist_ext ( &url_descs, uri_start, " ", 0 );
	if ( rc ) {
		snprintf( c->cr_msg, sizeof( c->cr_msg ),
			  "<%s> invalid ldap urilist",
			  uri_start );
		rc = ARG_BAD_CONF;
		goto exit;
	}

	for ( url_desc = url_descs;
	      url_desc;
	      url_desc = url_descs->lud_next ) {
		rc = unique_new_domain_uri ( &domain->uri,
					     url_desc,
					     c );
		if ( rc ) {
			rc = ARG_BAD_CONF;
			uri_err = 1;
			goto exit;
		}
	}

exit:
	if ( url_descs ) ldap_free_urldesc ( url_descs );
	domain->next = *domainp;
	*domainp = domain;
	if ( rc ) {
		Debug ( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
			"%s: %s\n", c->log, c->cr_msg, 0 );
		unique_free_domain ( domain );
		*domainp = NULL;
	}
	return rc;
}

static int
unique_cf_base( ConfigArgs *c )
{
	BackendDB *be = (BackendDB *)c->be;
	slap_overinst *on = (slap_overinst *)c->bi;
	unique_data *private = (unique_data *) on->on_bi.bi_private;
	unique_domain *domains = private->domains;
	unique_domain *legacy = private->legacy;
370
371
372
373
	int rc = ARG_BAD_CONF;

	switch ( c->op ) {
	case SLAP_CONFIG_EMIT:
374
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
		rc = 0;
		if ( legacy && legacy->uri && legacy->uri->dn ) {
			rc = value_add_one ( &c->rvalue_vals,
					     legacy->uri->dn );
			if ( rc ) return rc;
			rc = value_add_one ( &c->rvalue_nvals,
					     legacy->uri->ndn );
			if ( rc ) return rc;
		}
		break;
	case LDAP_MOD_DELETE:
		assert ( legacy && legacy->uri && legacy->uri->dn );
		rc = 0;
		ber_bvfree ( legacy->uri->dn );
		ber_bvfree ( legacy->uri->ndn );
		legacy->uri->dn = NULL;
		legacy->uri->ndn = NULL;
		if ( !legacy->uri->attrs
		     && !legacy->uri->dn ) {
			unique_free_domain_uri ( legacy->uri );
			legacy->uri = NULL;
		}
		if ( !legacy->uri && !private->legacy_strict_set ) {
			unique_free_domain ( legacy );
			private->legacy = legacy = NULL;
		}
		break;
	case LDAP_MOD_ADD:
	case SLAP_CONFIG_ADD:
		if ( domains ) {
			sprintf ( c->cr_msg,
				  "cannot set legacy attrs when URIs are present" );
			Debug ( LDAP_DEBUG_CONFIG, "unique config: %s\n",
				c->cr_msg, NULL, NULL );
			rc = ARG_BAD_CONF;
409
			break;
410
411
412
413
414
415
416
417
		}
		if ( !dnIsSuffix ( &c->value_ndn,
				   &be->be_nsuffix[0] ) ) {
			sprintf ( c->cr_msg,
				  "dn is not a suffix of backend base" );
			Debug ( LDAP_DEBUG_CONFIG, "unique config: %s\n",
				c->cr_msg, NULL, NULL );
			rc = ARG_BAD_CONF;
418
419
			break;
		}
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
452
453
454
455
456
457
458
459
460
461
462
463
464
		if ( !legacy ) {
			unique_new_domain ( &private->legacy,
					    UNIQUE_DEFAULT_URI,
					    c );
			legacy = private->legacy;
		}
		if ( !legacy->uri )
			unique_new_domain_uri_basic ( &legacy->uri, c );
		ber_bvfree ( legacy->uri->dn );
		ber_bvfree ( legacy->uri->ndn );
		legacy->uri->dn = ber_bvdup ( &c->value_dn );
		legacy->uri->ndn = ber_bvdup ( &c->value_ndn );
		rc = 0;
		break;
	default:
		abort();
	}

	return rc;
}

static int
unique_cf_attrs( ConfigArgs *c )
{
	slap_overinst *on = (slap_overinst *)c->bi;
	unique_data *private = (unique_data *) on->on_bi.bi_private;
	unique_domain *domains = private->domains;
	unique_domain *legacy = private->legacy;
	unique_attrs *new_attrs = NULL;
	unique_attrs *attr, *next_attr, *reverse_attrs;
	unique_attrs **attrp;
	int rc = ARG_BAD_CONF;
	int i;

	switch ( c->op ) {
	case SLAP_CONFIG_EMIT:
		if ( legacy
		     && (c->type == UNIQUE_IGNORE) == legacy->ignore
		     && legacy->uri )
			for ( attr = legacy->uri->attrs;
			      attr;
			      attr = attr->next )
				value_add_one( &c->rvalue_vals,
					       &attr->attr->ad_cname );
		rc = 0;
465
466
		break;
	case LDAP_MOD_DELETE:
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
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
		if ( legacy
		     && (c->type == UNIQUE_IGNORE) == legacy->ignore
		     && legacy->uri
		     && legacy->uri->attrs) {
			if ( c->valx < 0 ) { /* delete all */
				for ( attr = legacy->uri->attrs;
				      attr;
				      attr = next_attr ) {
					next_attr = attr->next;
					ch_free ( attr );
				}
				legacy->uri->attrs = NULL;
			} else { /* delete by index */
				attrp = &legacy->uri->attrs;
				for ( i=0; i < c->valx; ++i )
					attrp = &(*attrp)->next;
				attr = *attrp;
				*attrp = attr->next;
				ch_free (attr);
			}
			if ( !legacy->uri->attrs
			     && !legacy->uri->dn ) {
				unique_free_domain_uri ( legacy->uri );
				legacy->uri = NULL;
			}
			if ( !legacy->uri && !private->legacy_strict_set ) {
				unique_free_domain ( legacy );
				private->legacy = legacy = NULL;
			}
		}
		rc = 0;
		break;
	case LDAP_MOD_ADD:
	case SLAP_CONFIG_ADD:
		if ( domains ) {
			sprintf ( c->cr_msg,
				  "cannot set legacy attrs when URIs are present" );
			Debug ( LDAP_DEBUG_CONFIG, "unique config: %s\n",
				c->cr_msg, NULL, NULL );
			rc = ARG_BAD_CONF;
			break;
		}
		if ( legacy
		     && legacy->uri
		     && legacy->uri->attrs
		     && (c->type == UNIQUE_IGNORE) != legacy->ignore ) {
			sprintf ( c->cr_msg,
				  "cannot set both attrs and ignore-attrs" );
			Debug ( LDAP_DEBUG_CONFIG, "unique config: %s\n",
				c->cr_msg, NULL, NULL );
			rc = ARG_BAD_CONF;
518
			break;
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
		}
		if ( !legacy ) {
			unique_new_domain ( &private->legacy,
					    UNIQUE_DEFAULT_URI,
					    c );
			legacy = private->legacy;
		}
		if ( !legacy->uri )
			unique_new_domain_uri_basic ( &legacy->uri, c );
		rc = 0;
		for ( i=1; c->argv[i]; ++i ) {
			AttributeDescription * ad = NULL;
			const char * text;
			if ( slap_str2ad ( c->argv[i], &ad, &text )
			     == LDAP_SUCCESS) {

				attr = ch_calloc ( 1,
					sizeof ( unique_attrs ) );
				attr->attr = ad;
				attr->next = new_attrs;
				new_attrs = attr;
			} else {
				snprintf( c->cr_msg, sizeof( c->cr_msg ),
					  "unique: attribute: %s: %s",
					  c->argv[i], text );
				for ( attr = new_attrs;
				      attr;
				      attr=next_attr ) {
					next_attr = attr->next;
					ch_free ( attr );
549
				}
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
				rc = ARG_BAD_CONF;
				break;
			}
		}
		if ( rc ) break;

		/* (nconc legacy->uri->attrs (nreverse new_attrs)) */
		reverse_attrs = NULL;
		for ( attr = new_attrs;
		      attr;
		      attr = next_attr ) {
			next_attr = attr->next;
			attr->next = reverse_attrs;
			reverse_attrs = attr;
		}
		for ( attrp = &legacy->uri->attrs;
		      *attrp;
		      attrp = &(*attrp)->next ) ;
		*attrp = reverse_attrs;
569

570
571
572
573
574
		legacy->ignore = ( c->type == UNIQUE_IGNORE );
		break;
	default:
		abort();
	}
575

576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
	if ( rc ) {
		Debug ( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
			"%s: %s\n", c->log, c->cr_msg, 0 );
	}
	return rc;
}

static int
unique_cf_strict( ConfigArgs *c )
{
	slap_overinst *on = (slap_overinst *)c->bi;
	unique_data *private = (unique_data *) on->on_bi.bi_private;
	unique_domain *domains = private->domains;
	unique_domain *legacy = private->legacy;
	int rc = ARG_BAD_CONF;
591

592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
	switch ( c->op ) {
	case SLAP_CONFIG_EMIT:
		/* We process the boolean manually instead of using
		 * ARG_ON_OFF so that we can three-state it;
		 * olcUniqueStrict is either TRUE, FALSE, or missing,
		 * and missing is necessary to add olcUniqueURIs...
		 */
		if ( private->legacy_strict_set ) {
			struct berval bv;
			bv.bv_val = legacy->strict ? "TRUE" : "FALSE";
			bv.bv_len = legacy->strict ?
				STRLENOF("TRUE") :
				STRLENOF("FALSE");
			value_add_one ( &c->rvalue_vals, &bv );
		}
		rc = 0;
		break;
	case LDAP_MOD_DELETE:
		if ( legacy ) {
			legacy->strict = 0;
			if ( ! legacy->uri ) {
				unique_free_domain ( legacy );
				private->legacy = NULL;
615
616
			}
		}
617
618
		private->legacy_strict_set = 0;
		rc = 0;
619
620
		break;
	case LDAP_MOD_ADD:
621
622
623
624
625
626
627
	case SLAP_CONFIG_ADD:
		if ( domains ) {
			sprintf ( c->cr_msg,
				  "cannot set legacy attrs when URIs are present" );
			Debug ( LDAP_DEBUG_CONFIG, "unique config: %s\n",
				c->cr_msg, NULL, NULL );
			rc = ARG_BAD_CONF;
628
			break;
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
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
		}
		if ( ! legacy ) {
			unique_new_domain ( &private->legacy,
					    UNIQUE_DEFAULT_URI,
					    c );
			legacy = private->legacy;
		}
		/* ... not using ARG_ON_OFF makes this necessary too */
		assert ( c->argc == 2 );
		legacy->strict = (strcasecmp ( c->argv[1], "TRUE" ) == 0);
		private->legacy_strict_set = 1;
		rc = 0;
		break;
	default:
		abort();
	}

	return rc;
}

static int
unique_cf_uri( ConfigArgs *c )
{
	slap_overinst *on = (slap_overinst *)c->bi;
	unique_data *private = (unique_data *) on->on_bi.bi_private;
	unique_domain *domains = private->domains;
	unique_domain *legacy = private->legacy;
	unique_domain *domain = NULL, **domainp = NULL;
	int rc = ARG_BAD_CONF;
	int i;

	switch ( c->op ) {
	case SLAP_CONFIG_EMIT:
		for ( domain = domains;
		      domain;
		      domain = domain->next ) {
			rc = value_add_one ( &c->rvalue_vals,
					     domain->domain_spec );
			if ( rc ) break;
			rc = value_add_one ( &c->rvalue_nvals,
					     domain->domain_spec );
			if ( rc ) break;
		}
		break;
	case LDAP_MOD_DELETE:
		if ( c->valx < 0 ) { /* delete them all! */
			unique_free_domain ( domains );
			private->domains = NULL;
		} else { /* delete just one */
			domainp = &private->domains;
			for ( i=0; i < c->valx && *domainp; ++i )
				domainp = &(*domainp)->next;

			/* If *domainp is null, we walked off the end
			 * of the list.  This happens when back-config
			 * and the overlay are out-of-sync, like when
			 * rejecting changes before ITS#4752 gets
			 * fixed.
			 *
			 * This should never happen, but will appear
			 * if you backport this version of
			 * slapo-unique without the config-undo fixes
			 *
			 * test024 Will hit this case in such a
			 * situation.
			 */
			assert (*domainp != NULL);

			domain = *domainp;
			*domainp = domain->next;
			domain->next = NULL;
			unique_free_domain ( domain );
		}
		rc = 0;
		break;

	case SLAP_CONFIG_ADD: /* fallthrough */
	case LDAP_MOD_ADD:
		if ( legacy ) {
			sprintf ( c->cr_msg,
				  "cannot set Uri when legacy attrs are present" );
			Debug ( LDAP_DEBUG_CONFIG, "unique config: %s\n",
				c->cr_msg, NULL, NULL );
			rc = ARG_BAD_CONF;
713
714
			break;
		}
715
716
717
718
719
720
721
722
723
724
		rc = 0;
		if ( c->line ) rc = unique_new_domain ( &domain, c->line, c );
		else rc = unique_new_domain ( &domain, c->argv[1], c );
		if ( rc ) break;
		assert ( domain->next == NULL );
		for ( domainp = &private->domains;
		      *domainp;
		      domainp = &(*domainp)->next ) ;
		*domainp = domain;

725
		break;
726

727
728
729
730
731
732
733
	default:
		abort ();
	}

	return rc;
}

734
735
736
737
738
739
740
/*
** allocate new unique_data;
** initialize, copy basedn;
** store in on_bi.bi_private;
**
*/

741
742
743
744
static int
unique_db_init(
	BackendDB	*be,
	ConfigReply	*cr
745
746
747
)
{
	slap_overinst *on = (slap_overinst *)be->bd_info;
748
	unique_data **privatep = (unique_data **) &on->on_bi.bi_private;
749

750
751
752
	Debug(LDAP_DEBUG_TRACE, "==> unique_db_init\n", 0, 0, 0);

	*privatep = ch_calloc ( 1, sizeof ( unique_data ) );
753

754
	return 0;
755
756
}

757
758
759
760
static int
unique_db_destroy(
	BackendDB	*be,
	ConfigReply	*cr
761
762
)
{
763
	slap_overinst *on = (slap_overinst *)be->bd_info;
764
765
766
767
768
769
770
771
	unique_data **privatep = (unique_data **) &on->on_bi.bi_private;
	unique_data *private = *privatep;

	Debug(LDAP_DEBUG_TRACE, "==> unique_db_destroy\n", 0, 0, 0);

	if ( private ) {
		unique_domain *domains = private->domains;
		unique_domain *legacy = private->legacy;
772

773
774
775
776
		unique_free_domain ( domains );
		unique_free_domain ( legacy );
		ch_free ( private );
		*privatep = NULL;
777
	}
778

779
	return 0;
780
781
782
783
}

static int
unique_open(
784
785
	BackendDB *be,
	ConfigReply *cr
786
787
788
789
)
{
	Debug(LDAP_DEBUG_TRACE, "unique_open: overlay initialized\n", 0, 0, 0);

790
	return 0;
791
792
793
794
}


/*
795
** Leave unique_data but wipe out config
796
797
798
799
800
**
*/

static int
unique_close(
801
802
	BackendDB *be,
	ConfigReply *cr
803
804
805
)
{
	slap_overinst *on	= (slap_overinst *) be->bd_info;
806
807
	unique_data **privatep = (unique_data **) &on->on_bi.bi_private;
	unique_data *private = *privatep;
808
809
810

	Debug(LDAP_DEBUG_TRACE, "==> unique_close\n", 0, 0, 0);

811
812
813
	if ( private ) {
		unique_domain *domains = private->domains;
		unique_domain *legacy = private->legacy;
814

815
816
817
		unique_free_domain ( domains );
		unique_free_domain ( legacy );
		memset ( private, 0, sizeof ( unique_data ) );
818
819
	}

820
	return ( 0 );
821
822
823
824
825
826
827
828
829
830
831
832
833
834
}


/*
** search callback
**	if this is a REP_SEARCH, count++;
**
*/

static int count_attr_cb(
	Operation *op,
	SlapReply *rs
)
{
835
836
	unique_counter *uc;

837
838
839
840
841
842
	/* because you never know */
	if(!op || !rs) return(0);

	/* Only search entries are interesting */
	if(rs->sr_type != REP_SEARCH) return(0);

843
844
845
846
847
	uc = op->o_callback->sc_private;

	/* Ignore the current entry */
	if ( dn_match( uc->ndn, &rs->sr_entry->e_nname )) return(0);

848
849
850
	Debug(LDAP_DEBUG_TRACE, "==> count_attr_cb <%s>\n",
		rs->sr_entry ? rs->sr_entry->e_name.bv_val : "UNKNOWN_DN", 0, 0);

851
	uc->count++;
852
853
854
855

	return(0);
}

856
857
858
859
860
861
862
863
/* count the length of one attribute ad
 * (and all of its values b)
 * in the proposed filter
 */
static int
count_filter_len(
	unique_domain *domain,
	unique_domain_uri *uri,
Howard Chu's avatar
Howard Chu committed
864
	AttributeDescription *ad,
865
	BerVarray b
Howard Chu's avatar
Howard Chu committed
866
867
)
{
868
	unique_attrs *attr;
Howard Chu's avatar
Howard Chu committed
869
	int i;
870
	int ks = 0;
871

872
	while ( !is_at_operational( ad->ad_type ) ) {
873
874
875
		if ( uri->attrs ) {
			for ( attr = uri->attrs; attr; attr = attr->next ) {
				if ( ad == attr->attr ) {
876
877
878
					break;
				}
			}
879
880
			if ( ( domain->ignore && attr )
			     || (!domain->ignore && !attr )) {
881
882
				break;
			}
Howard Chu's avatar
Howard Chu committed
883
		}
884
885
886
887
888
		if ( b && b[0].bv_val ) {
			for (i = 0; b[i].bv_val; i++ ) {
				/* note: make room for filter escaping... */
				ks += ( 3 * b[i].bv_len ) + ad->ad_cname.bv_len + STRLENOF( "(=)" );
			}
889
		} else if ( domain->strict ) {
Howard Chu's avatar
Howard Chu committed
890
			ks += ad->ad_cname.bv_len + STRLENOF( "(=*)" );	/* (attr=*) */
891
		}
Howard Chu's avatar
Howard Chu committed
892
893
		break;
	}
894

Howard Chu's avatar
Howard Chu committed
895
896
897
	return ks;
}

898
899
900
901
static char *
build_filter(
	unique_domain *domain,
	unique_domain_uri *uri,
Howard Chu's avatar
Howard Chu committed
902
903
	AttributeDescription *ad,
	BerVarray b,
904
905
	char *kp,
	void *ctx
Howard Chu's avatar
Howard Chu committed
906
907
)
{
908
	unique_attrs *attr;
Howard Chu's avatar
Howard Chu committed
909
910
	int i;

911
	while ( !is_at_operational( ad->ad_type ) ) {
912
913
914
		if ( uri->attrs ) {
			for ( attr = uri->attrs; attr; attr = attr->next ) {
				if ( ad == attr->attr ) {
915
916
917
					break;
				}
			}
918
919
			if ( ( domain->ignore && attr )
			     || (!domain->ignore && !attr )) {
920
921
922
923
924
925
926
				break;
			}
		}
		if ( b && b[0].bv_val ) {
			for ( i = 0; b[i].bv_val; i++ ) {
				struct berval	bv;

927
				ldap_bv2escaped_filter_value_x( &b[i], &bv, 1, ctx );
928
				kp += sprintf( kp, "(%s=%s)", ad->ad_cname.bv_val, bv.bv_val );
929
930
931
				if ( bv.bv_val != b[i].bv_val ) {
					ber_memfree_x( bv.bv_val, ctx );
				}
932
			}
933
		} else if ( domain->strict ) {
934
			kp += sprintf( kp, "(%s=*)", ad->ad_cname.bv_val );
Howard Chu's avatar
Howard Chu committed
935
936
937
938
939
940
		}
		break;
	}
	return kp;
}

941
942
static int
unique_search(
943
	Operation *op,
Howard Chu's avatar
Howard Chu committed
944
	Operation *nop,
945
946
	struct berval * dn,
	int scope,
Howard Chu's avatar
Howard Chu committed
947
948
	SlapReply *rs,
	char *key
949
950
)
{
Howard Chu's avatar
Howard Chu committed
951
	slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
952
953
	SlapReply nrs = { REP_RESULT };
	slap_callback cb = { NULL, NULL, NULL, NULL }; /* XXX */
954
	unique_counter uq = { NULL, 0 };
Howard Chu's avatar
Howard Chu committed
955
956
	int rc;

957
958
	Debug(LDAP_DEBUG_TRACE, "==> unique_search %s\n", key, 0, 0);

Howard Chu's avatar
Howard Chu committed
959
960
961
962
963
964
965
	nop->ors_filter = str2filter_x(nop, key);
	ber_str2bv(key, 0, 0, &nop->ors_filterstr);

	cb.sc_response	= (slap_response*)count_attr_cb;
	cb.sc_private	= &uq;
	nop->o_callback	= &cb;
	nop->o_tag	= LDAP_REQ_SEARCH;
966
	nop->ors_scope	= scope;
Howard Chu's avatar
Howard Chu committed
967
	nop->ors_deref	= LDAP_DEREF_NEVER;
Howard Chu's avatar
Howard Chu committed
968
	nop->ors_limit	= NULL;
Howard Chu's avatar
Howard Chu committed
969
970
971
972
973
	nop->ors_slimit	= SLAP_NO_LIMIT;
	nop->ors_tlimit	= SLAP_NO_LIMIT;
	nop->ors_attrs	= slap_anlist_no_attrs;
	nop->ors_attrsonly = 1;

974
975
	uq.ndn = &op->o_req_ndn;

976
	nop->o_req_ndn = *dn;
Howard Chu's avatar
Howard Chu committed
977
978
	nop->o_ndn = op->o_bd->be_rootndn;

979
	nop->o_bd = on->on_info->oi_origdb;
Howard Chu's avatar
Howard Chu committed
980
981
	rc = nop->o_bd->be_search(nop, &nrs);
	filter_free_x(nop, nop->ors_filter);
982
	op->o_tmpfree( key, op->o_tmpmemctx );
Howard Chu's avatar
Howard Chu committed
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000

	if(rc != LDAP_SUCCESS && rc != LDAP_NO_SUCH_OBJECT) {
		op->o_bd->bd_info = (BackendInfo *) on->on_info;
		send_ldap_error(op, rs, rc, "unique_search failed");
		return(rs->sr_err);
	}

	Debug(LDAP_DEBUG_TRACE, "=> unique_search found %d records\n", uq.count, 0, 0);

	if(uq.count) {
		op->o_bd->bd_info = (BackendInfo *) on->on_info;
		send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION,
			"some attributes not unique");
		return(rs->sr_err);
	}

	return(SLAP_CB_CONTINUE);
}
For faster browsing, not all history is shown. View entire blame