Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
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
170
171
172
173
174
175
176
177
178
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
370
371
372
373
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
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
452
453
454
455
456
457
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
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
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
/*	$NetBSD: index.c,v 1.1.1.3.6.1 2019/08/10 06:17:18 martin Exp $	*/

/* index.c - routines for dealing with attribute indexes */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 2000-2019 The OpenLDAP Foundation.
 * 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>.
 */

#include <sys/cdefs.h>
__RCSID("$NetBSD: index.c,v 1.1.1.3.6.1 2019/08/10 06:17:18 martin Exp $");

#include "portable.h"

#include <stdio.h>

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

#include "slap.h"
#include "back-mdb.h"
#include "lutil_hash.h"

static char presence_keyval[] = {0,0,0,0,0};
static struct berval presence_key[2] = {BER_BVC(presence_keyval), BER_BVNULL};

AttrInfo *mdb_index_mask(
	Backend *be,
	AttributeDescription *desc,
	struct berval *atname )
{
	AttributeType *at;
	AttrInfo *ai = mdb_attr_mask( be->be_private, desc );

	if( ai ) {
		*atname = desc->ad_cname;
		return ai;
	}

	/* If there is a tagging option, did we ever index the base
	 * type? If so, check for mask, otherwise it's not there.
	 */
	if( slap_ad_is_tagged( desc ) && desc != desc->ad_type->sat_ad ) {
		/* has tagging option */
		ai = mdb_attr_mask( be->be_private, desc->ad_type->sat_ad );

		if ( ai && !( ai->ai_indexmask & SLAP_INDEX_NOTAGS ) ) {
			*atname = desc->ad_type->sat_cname;
			return ai;
		}
	}

	/* see if supertype defined mask for its subtypes */
	for( at = desc->ad_type; at != NULL ; at = at->sat_sup ) {
		/* If no AD, we've never indexed this type */
		if ( !at->sat_ad ) continue;

		ai = mdb_attr_mask( be->be_private, at->sat_ad );

		if ( ai && !( ai->ai_indexmask & SLAP_INDEX_NOSUBTYPES ) ) {
			*atname = at->sat_cname;
			return ai;
		}
	}

	return 0;
}

/* This function is only called when evaluating search filters.
 */
int mdb_index_param(
	Backend *be,
	AttributeDescription *desc,
	int ftype,
	MDB_dbi *dbip,
	slap_mask_t *maskp,
	struct berval *prefixp )
{
	AttrInfo *ai;
	slap_mask_t mask, type = 0;

	ai = mdb_index_mask( be, desc, prefixp );

	if ( !ai ) {
#ifdef MDB_MONITOR_IDX
		switch ( ftype ) {
		case LDAP_FILTER_PRESENT:
			type = SLAP_INDEX_PRESENT;
			break;
		case LDAP_FILTER_APPROX:
			type = SLAP_INDEX_APPROX;
			break;
		case LDAP_FILTER_EQUALITY:
			type = SLAP_INDEX_EQUALITY;
			break;
		case LDAP_FILTER_SUBSTRINGS:
			type = SLAP_INDEX_SUBSTR;
			break;
		default:
			return LDAP_INAPPROPRIATE_MATCHING;
		}
		mdb_monitor_idx_add( be->be_private, desc, type );
#endif /* MDB_MONITOR_IDX */

		return LDAP_INAPPROPRIATE_MATCHING;
	}
	mask = ai->ai_indexmask;

	switch( ftype ) {
	case LDAP_FILTER_PRESENT:
		type = SLAP_INDEX_PRESENT;
		if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
			*prefixp = presence_key[0];
			goto done;
		}
		break;

	case LDAP_FILTER_APPROX:
		type = SLAP_INDEX_APPROX;
		if ( desc->ad_type->sat_approx ) {
			if( IS_SLAP_INDEX( mask, SLAP_INDEX_APPROX ) ) {
				goto done;
			}
			break;
		}

		/* Use EQUALITY rule and index for approximate match */
		/* fall thru */

	case LDAP_FILTER_EQUALITY:
		type = SLAP_INDEX_EQUALITY;
		if( IS_SLAP_INDEX( mask, SLAP_INDEX_EQUALITY ) ) {
			goto done;
		}
		break;

	case LDAP_FILTER_SUBSTRINGS:
		type = SLAP_INDEX_SUBSTR;
		if( IS_SLAP_INDEX( mask, SLAP_INDEX_SUBSTR ) ) {
			goto done;
		}
		break;

	default:
		return LDAP_OTHER;
	}

#ifdef MDB_MONITOR_IDX
	mdb_monitor_idx_add( be->be_private, desc, type );
#endif /* MDB_MONITOR_IDX */

	return LDAP_INAPPROPRIATE_MATCHING;

done:
	*dbip = ai->ai_dbi;
	*maskp = mask;
	return LDAP_SUCCESS;
}

static int indexer(
	Operation *op,
	MDB_txn *txn,
	struct mdb_attrinfo *ai,
	AttributeDescription *ad,
	struct berval *atname,
	BerVarray vals,
	ID id,
	int opid,
	slap_mask_t mask )
{
	int rc;
	struct berval *keys;
	MDB_cursor *mc = ai->ai_cursor;
	mdb_idl_keyfunc *keyfunc;
	char *err;

	assert( mask != 0 );

	if ( !mc ) {
		err = "c_open";
		rc = mdb_cursor_open( txn, ai->ai_dbi, &mc );
		if ( rc ) goto done;
		if ( slapMode & SLAP_TOOL_QUICK )
			ai->ai_cursor = mc;
	}

	if ( opid == SLAP_INDEX_ADD_OP ) {
#ifdef MDB_TOOL_IDL_CACHING
		if (( slapMode & SLAP_TOOL_QUICK ) && slap_tool_thread_max > 2 ) {
			keyfunc = mdb_tool_idl_add;
			mc = (MDB_cursor *)ai;
		} else
#endif
			keyfunc = mdb_idl_insert_keys;
	} else
		keyfunc = mdb_idl_delete_keys;

	if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
		rc = keyfunc( op->o_bd, mc, presence_key, id );
		if( rc ) {
			err = "presence";
			goto done;
		}
	}

	if( IS_SLAP_INDEX( mask, SLAP_INDEX_EQUALITY ) ) {
		rc = ad->ad_type->sat_equality->smr_indexer(
			LDAP_FILTER_EQUALITY,
			mask,
			ad->ad_type->sat_syntax,
			ad->ad_type->sat_equality,
			atname, vals, &keys, op->o_tmpmemctx );

		if( rc == LDAP_SUCCESS && keys != NULL ) {
			rc = keyfunc( op->o_bd, mc, keys, id );
			ber_bvarray_free_x( keys, op->o_tmpmemctx );
			if ( rc ) {
				err = "equality";
				goto done;
			}
		}
		rc = LDAP_SUCCESS;
	}

	if( IS_SLAP_INDEX( mask, SLAP_INDEX_APPROX ) ) {
		rc = ad->ad_type->sat_approx->smr_indexer(
			LDAP_FILTER_APPROX,
			mask,
			ad->ad_type->sat_syntax,
			ad->ad_type->sat_approx,
			atname, vals, &keys, op->o_tmpmemctx );

		if( rc == LDAP_SUCCESS && keys != NULL ) {
			rc = keyfunc( op->o_bd, mc, keys, id );
			ber_bvarray_free_x( keys, op->o_tmpmemctx );
			if ( rc ) {
				err = "approx";
				goto done;
			}
		}

		rc = LDAP_SUCCESS;
	}

	if( IS_SLAP_INDEX( mask, SLAP_INDEX_SUBSTR ) ) {
		rc = ad->ad_type->sat_substr->smr_indexer(
			LDAP_FILTER_SUBSTRINGS,
			mask,
			ad->ad_type->sat_syntax,
			ad->ad_type->sat_substr,
			atname, vals, &keys, op->o_tmpmemctx );

		if( rc == LDAP_SUCCESS && keys != NULL ) {
			rc = keyfunc( op->o_bd, mc, keys, id );
			ber_bvarray_free_x( keys, op->o_tmpmemctx );
			if( rc ) {
				err = "substr";
				goto done;
			}
		}

		rc = LDAP_SUCCESS;
	}

done:
	if ( !(slapMode & SLAP_TOOL_QUICK))
		mdb_cursor_close( mc );
	switch( rc ) {
	/* The callers all know how to deal with these results */
	case 0:
		break;
	/* Anything else is bad news */
	default:
		rc = LDAP_OTHER;
	}
	return rc;
}

static int index_at_values(
	Operation *op,
	MDB_txn *txn,
	AttributeDescription *ad,
	AttributeType *type,
	struct berval *tags,
	BerVarray vals,
	ID id,
	int opid )
{
	int rc;
	slap_mask_t mask = 0;
	int ixop = opid;
	AttrInfo *ai = NULL;

	if ( opid == MDB_INDEX_UPDATE_OP )
		ixop = SLAP_INDEX_ADD_OP;

	if( type->sat_sup ) {
		/* recurse */
		rc = index_at_values( op, txn, NULL,
			type->sat_sup, tags,
			vals, id, opid );

		if( rc ) return rc;
	}

	/* If this type has no AD, we've never used it before */
	if( type->sat_ad ) {
		ai = mdb_attr_mask( op->o_bd->be_private, type->sat_ad );
		if ( ai ) {
#ifdef LDAP_COMP_MATCH
			/* component indexing */
			if ( ai->ai_cr ) {
				ComponentReference *cr;
				for( cr = ai->ai_cr ; cr ; cr = cr->cr_next ) {
					rc = indexer( op, txn, ai, cr->cr_ad, &type->sat_cname,
						cr->cr_nvals, id, ixop,
						cr->cr_indexmask );
				}
			}
#endif
			ad = type->sat_ad;
			/* If we're updating the index, just set the new bits that aren't
			 * already in the old mask.
			 */
			if ( opid == MDB_INDEX_UPDATE_OP )
				mask = ai->ai_newmask & ~ai->ai_indexmask;
			else
			/* For regular updates, if there is a newmask use it. Otherwise
			 * just use the old mask.
			 */
				mask = ai->ai_newmask ? ai->ai_newmask : ai->ai_indexmask;
			if( mask ) {
				rc = indexer( op, txn, ai, ad, &type->sat_cname,
					vals, id, ixop, mask );

				if( rc ) return rc;
			}
		}
	}

	if( tags->bv_len ) {
		AttributeDescription *desc;

		desc = ad_find_tags( type, tags );
		if( desc ) {
			ai = mdb_attr_mask( op->o_bd->be_private, desc );

			if( ai ) {
				if ( opid == MDB_INDEX_UPDATE_OP )
					mask = ai->ai_newmask & ~ai->ai_indexmask;
				else
					mask = ai->ai_newmask ? ai->ai_newmask : ai->ai_indexmask;
				if ( mask ) {
					rc = indexer( op, txn, ai, desc, &desc->ad_cname,
						vals, id, ixop, mask );

					if( rc ) {
						return rc;
					}
				}
			}
		}
	}

	return LDAP_SUCCESS;
}

int mdb_index_values(
	Operation *op,
	MDB_txn *txn,
	AttributeDescription *desc,
	BerVarray vals,
	ID id,
	int opid )
{
	int rc;

	/* Never index ID 0 */
	if ( id == 0 )
		return 0;

	rc = index_at_values( op, txn, desc,
		desc->ad_type, &desc->ad_tags,
		vals, id, opid );

	return rc;
}

/* Get the list of which indices apply to this attr */
int
mdb_index_recset(
	struct mdb_info *mdb,
	Attribute *a,
	AttributeType *type,
	struct berval *tags,
	IndexRec *ir )
{
	int rc, slot;
	AttrList *al;

	if( type->sat_sup ) {
		/* recurse */
		rc = mdb_index_recset( mdb, a, type->sat_sup, tags, ir );
		if( rc ) return rc;
	}
	/* If this type has no AD, we've never used it before */
	if( type->sat_ad ) {
		slot = mdb_attr_slot( mdb, type->sat_ad, NULL );
		if ( slot >= 0 ) {
			ir[slot].ir_ai = mdb->mi_attrs[slot];
			al = ch_malloc( sizeof( AttrList ));
			al->attr = a;
			al->next = ir[slot].ir_attrs;
			ir[slot].ir_attrs = al;
		}
	}
	if( tags->bv_len ) {
		AttributeDescription *desc;

		desc = ad_find_tags( type, tags );
		if( desc ) {
			slot = mdb_attr_slot( mdb, desc, NULL );
			if ( slot >= 0 ) {
				ir[slot].ir_ai = mdb->mi_attrs[slot];
				al = ch_malloc( sizeof( AttrList ));
				al->attr = a;
				al->next = ir[slot].ir_attrs;
				ir[slot].ir_attrs = al;
			}
		}
	}
	return LDAP_SUCCESS;
}

/* Apply the indices for the recset */
int mdb_index_recrun(
	Operation *op,
	MDB_txn *txn,
	struct mdb_info *mdb,
	IndexRec *ir0,
	ID id,
	int base )
{
	IndexRec *ir;
	AttrList *al;
	int i, rc = 0;

	/* Never index ID 0 */
	if ( id == 0 )
		return 0;

	for (i=base; i<mdb->mi_nattrs; i+=slap_tool_thread_max-1) {
		ir = ir0 + i;
		if ( !ir->ir_ai ) continue;
		while (( al = ir->ir_attrs )) {
			ir->ir_attrs = al->next;
			rc = indexer( op, txn, ir->ir_ai, ir->ir_ai->ai_desc,
				&ir->ir_ai->ai_desc->ad_type->sat_cname,
				al->attr->a_nvals, id, SLAP_INDEX_ADD_OP,
				ir->ir_ai->ai_indexmask );
			free( al );
			if ( rc ) break;
		}
	}
	return rc;
}

int
mdb_index_entry(
	Operation *op,
	MDB_txn *txn,
	int opid,
	Entry	*e )
{
	int rc;
	Attribute *ap = e->e_attrs;
#if 0 /* ifdef LDAP_COMP_MATCH */
	ComponentReference *cr_list = NULL;
	ComponentReference *cr = NULL, *dupped_cr = NULL;
	void* decoded_comp;
	ComponentSyntaxInfo* csi_attr;
	Syntax* syn;
	AttributeType* at;
	int i, num_attr;
	void* mem_op;
	struct berval value = {0};
#endif

	/* Never index ID 0 */
	if ( e->e_id == 0 )
		return 0;

	Debug( LDAP_DEBUG_TRACE, "=> index_entry_%s( %ld, \"%s\" )\n",
		opid == SLAP_INDEX_DELETE_OP ? "del" : "add",
		(long) e->e_id, e->e_dn ? e->e_dn : "" );

	/* add each attribute to the indexes */
	for ( ; ap != NULL; ap = ap->a_next ) {
#if 0 /* ifdef LDAP_COMP_MATCH */
		AttrInfo *ai;
		/* see if attribute has components to be indexed */
		ai = mdb_attr_mask( op->o_bd->be_private, ap->a_desc->ad_type->sat_ad );
		if ( !ai ) continue;
		cr_list = ai->ai_cr;
		if ( attr_converter && cr_list ) {
			syn = ap->a_desc->ad_type->sat_syntax;
			ap->a_comp_data = op->o_tmpalloc( sizeof( ComponentData ), op->o_tmpmemctx );
                	/* Memory chunk(nibble) pre-allocation for decoders */
                	mem_op = nibble_mem_allocator ( 1024*16, 1024*4 );
			ap->a_comp_data->cd_mem_op = mem_op;
			for( cr = cr_list ; cr ; cr = cr->cr_next ) {
				/* count how many values in an attribute */
				for( num_attr=0; ap->a_vals[num_attr].bv_val != NULL; num_attr++ );
				num_attr++;
				cr->cr_nvals = (BerVarray)op->o_tmpalloc( sizeof( struct berval )*num_attr, op->o_tmpmemctx );
				for( i=0; ap->a_vals[i].bv_val != NULL; i++ ) {
					/* decoding attribute value */
					decoded_comp = attr_converter ( ap, syn, &ap->a_vals[i] );
					if ( !decoded_comp )
						return LDAP_DECODING_ERROR;
					/* extracting the referenced component */
					dupped_cr = dup_comp_ref( op, cr );
					csi_attr = ((ComponentSyntaxInfo*)decoded_comp)->csi_comp_desc->cd_extract_i( mem_op, dupped_cr, decoded_comp );
					if ( !csi_attr )
						return LDAP_DECODING_ERROR;
					cr->cr_asn_type_id = csi_attr->csi_comp_desc->cd_type_id;
					cr->cr_ad = (AttributeDescription*)get_component_description ( cr->cr_asn_type_id );
					if ( !cr->cr_ad )
						return LDAP_INVALID_SYNTAX;
					at = cr->cr_ad->ad_type;
					/* encoding the value of component in GSER */
					rc = component_encoder( mem_op, csi_attr, &value );
					if ( rc != LDAP_SUCCESS )
						return LDAP_ENCODING_ERROR;
					/* Normalize the encoded component values */
					if ( at->sat_equality && at->sat_equality->smr_normalize ) {
						rc = at->sat_equality->smr_normalize (
							SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
							at->sat_syntax, at->sat_equality,
							&value, &cr->cr_nvals[i], op->o_tmpmemctx );
					} else {
						cr->cr_nvals[i] = value;
					}
				}
				/* The end of BerVarray */
				cr->cr_nvals[num_attr-1].bv_val = NULL;
				cr->cr_nvals[num_attr-1].bv_len = 0;
			}
			op->o_tmpfree( ap->a_comp_data, op->o_tmpmemctx );
			nibble_mem_free ( mem_op );
			ap->a_comp_data = NULL;
		}
#endif
		rc = mdb_index_values( op, txn, ap->a_desc,
			ap->a_nvals, e->e_id, opid );

		if( rc != LDAP_SUCCESS ) {
			Debug( LDAP_DEBUG_TRACE,
				"<= index_entry_%s( %ld, \"%s\" ) failure\n",
				opid == SLAP_INDEX_ADD_OP ? "add" : "del",
				(long) e->e_id, e->e_dn );
			return rc;
		}
	}

	Debug( LDAP_DEBUG_TRACE, "<= index_entry_%s( %ld, \"%s\" ) success\n",
		opid == SLAP_INDEX_DELETE_OP ? "del" : "add",
		(long) e->e_id, e->e_dn ? e->e_dn : "" );

	return LDAP_SUCCESS;
}