aux-items.c 62 KB
Newer Older
1
/*
2
 * $Id: aux-items.c,v 1.36 2001/12/29 15:50:25 ceder Exp $
Per Cederqvist's avatar
Per Cederqvist committed
3
 * Copyright (C) 1994-2001  Lysator Academic Computer Association.
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 *
 * This file is part of the LysKOM server.
 * 
 * LysKOM is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by 
 * the Free Software Foundation; either version 1, or (at your option) 
 * any later version.
 * 
 * LysKOM is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with LysKOM; see the file COPYING.  If not, write to
 * Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
 * or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
 * MA 02139, USA.
 *
 * Please mail bug reports to bug-lyskom@lysator.liu.se. 
 */

David Byers's avatar
David Byers committed
26
27
28
29
30

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

31
32
33
34
35
36
37
38
#include <stdio.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#include <setjmp.h>
39
#include <assert.h>
40
41

#include "kom-types.h"
David Byers's avatar
Server    
David Byers committed
42
43
44
#include "com.h"
#include "async.h"
#include "connections.h"
45
46
47
#include "manipulate.h"
#include "aux-items.h"
#include "kom-errno.h"
David Byers's avatar
David Byers committed
48
#include "kom-memory.h"
49
50
51
52
#include "server/smalloc.h"
#include "cache.h"
#include "s-string.h"
#include "lyskomd.h"
David Byers's avatar
David Byers committed
53
#include "kom-config.h"
54
55
#include "regex.h"
#include "log.h"
Per Cederqvist's avatar
Per Cederqvist committed
56
#include "services.h"
David Byers's avatar
David Byers committed
57
58
#include "admin.h"
#include "param.h"
59
#include "server-time.h"
David Byers's avatar
David Byers committed
60
#include "string-malloc.h"
61
62
63

#define AUX_ADJUST_FLAG(flg) item->flags.flg = (def->clear_flags.flg)?0:((def->set_flags.flg)?1:item->flags.flg)

David Byers's avatar
David Byers committed
64
65
/* Externally accessible variables (used by the parser) */

66
Aux_item_definition     *aux_item_definition_list = NULL;
David Byers's avatar
David Byers committed
67
68
69
70
unsigned long            num_aux_item_definitions = 0; 

/* Variables local to this file */

71
72
73
#if COMPILED_AUX_ITEMS
static Aux_item_definition compiled_aux_items[] = {};
#endif
74

75

David Byers's avatar
David Byers committed
76
77
/* Forward declaration of triggers */

78
79
80
81
static void aux_item_trigger_mark_text(Aux_item_trigger_data *);
static void aux_item_trigger_unmark_text(Aux_item_trigger_data *);
static void aux_item_trigger_mirror_faq(Aux_item_trigger_data *);
static void aux_item_trigger_link_item(Aux_item_trigger_data *data);
David Byers's avatar
David Byers committed
82
83
84
85


/* Forward declarations of validators */

86
87
88
89
90
static Bool aux_item_validate_existing_text(Aux_item_validation_data *data);

/* Other forward declarations */
static const Aux_item *
find_aux_item(const Aux_item_list *list, unsigned long aux_no);
David Byers's avatar
David Byers committed
91
92
93
94



/* Symbol table for the triggers */
95

96
static Aux_item_trigger_mapping
97
98
99
100
aux_item_triggers [] =
{
    { "mark-text", aux_item_trigger_mark_text },
    { "unmark-text", aux_item_trigger_unmark_text },
David Byers's avatar
David Byers committed
101
    { "link-faq", aux_item_trigger_mirror_faq },
David Byers's avatar
David Byers committed
102
    { "link-item", aux_item_trigger_link_item },
103
104
105
    { NULL, NULL }
};

David Byers's avatar
David Byers committed
106
107
108
109
110
111
112
113
114
115
116
117
118

/* Symbol table for the validators */

static Aux_item_validator_mapping
aux_item_validators [] =
{
    { "existing-readable-text", aux_item_validate_existing_text },
    { NULL, NULL }
};


/* Use this to initialize an empty definition */

119
120
121
122
123
124
Aux_item_definition empty_aux_item_definition =
{
    NULL,                   /* Name */           
    0,                      /* Tag */            
    { 0,0,0,0,0,0,0,0 },    /* Clear flags */    
    { 0,0,0,0,0,0,0,0 },    /* Set flags */      
David Byers's avatar
David Byers committed
125
    0,                      /* Disabled */
126
127
    0,                      /* Author only */    
    0,                      /* Supervisor only */
David Byers's avatar
David Byers committed
128
    0,                      /* System only */
129
    0,                      /* Unique */         
130
131
    0,                      /* Can't delete */
    0,                      /* Owner delete */
132
133
    0,                      /* Inherit limit */  
    FALSE,                  /* Texts */
134
    0,
135
    FALSE,                  /* Confs */
136
    0,
137
138
    FALSE,                  /* Letterbox */
    FALSE,                  /* System */
David Byers's avatar
David Byers committed
139
140
    0,                      /* Number of validators */
    NULL,                   /* Validator list */
141
142
143
    0, NULL,
    0, NULL,
    0, NULL,
144
145
146
147
148
149
150
151
152
153
154
155
156
    NULL                    /* Next */
};

    


/*
 * simple_aux_item is the default definition for simple
 * items (non-reserved tags)
 */

static Aux_item_definition simple_aux_item =
{
157
    (char*)"simple",        /* Name */           
158
159
160
    0,                      /* Tag */            
    { 0,0,0,0,0,0,0,0 },    /* Clear flags */    
    { 0,0,0,0,0,0,0,0 },    /* Set flags */      
David Byers's avatar
David Byers committed
161
    0,                      /* Disabled */
162
163
    0,                      /* Author only */    
    0,                      /* Supervisor only */
David Byers's avatar
David Byers committed
164
    0,                      /* System only */
165
    0,                      /* Unique */         
166
167
    0,                      /* Can't delete */
    0,                      /* Owner delete */
168
169
    0,                      /* Inherit limit */  
    TRUE,                   /* Texts */
170
    0,
171
    TRUE,                   /* Confs */
172
    0,
173
174
    TRUE,                   /* Letterbox */
    TRUE,                   /* System */
David Byers's avatar
David Byers committed
175
    0, NULL,                /* Validators */
176
177
178
179
    0, NULL,                /* Add triggers */
    0, NULL,                /* Delete triggers */
    0, NULL,                /* Undelete triggers */
    NULL
180
181
182
183
184
185
};


/* Forward declarations */

static Bool
186
187
aux_item_check_unique(const Aux_item *item,
                      const Aux_item_definition *xdef,
188
189
190
191
192
193
194
195
196
197
198
199
                      Aux_item_list *add_to_list,
                      unsigned long start_looking_at);


/*
 * aux_item_default_definition
 *
 * Return the default definition of ITEM or NULL if ITEM cannot
 * be created without an explicit definition
 */

static Aux_item_definition *
200
aux_item_default_definition(const Aux_item *item)
201
202
203
204
205
206
207
208
209
210
211
{
    /* A predefined aux_item that we didn't find a definition for is
       illegal. */

    if (AUX_IS_ILLEGAL(item->tag))
        return NULL;

    if (AUX_IS_PREDEFINED(item->tag))
        return NULL;

    
212
213
214
215
216
    /* FIXME (bug 346): "extended item" is a concept that isn't
       implemented, and it conflicts with what the Protocol-A.texi
       documentation says.  This code is probably a rest from the
       design phase, and it should probably be removed. */  

217
218
219
220
221
222
223
    /* This might be an extended item. This code is very horrendous,
       execially if you take a closer look at the AUX_CHECK_BIT macro.
       I wrote it this way because I think it will work in a
       wrong-endian environment, and I was unsure of how well simple
       masking would. */
    /* MMMM XFUP SSSS CCCC NNNN NNNN NNNN NNNN */

David Byers's avatar
David Byers committed
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
/*
  tmp = item->tag;

  extended                        = (tmp & 0x07000000) ? 1 : 0;
  def_s.author_only               = (tmp & 0x04000000) ? 1 : 0;
  def_s.one_per_person            = (tmp & 0x02000000) ? 1 : 0;
  def_s.may_not_delete            = (tmp & 0x01000000) ? 1 : 0;
  def_s.set_flags.deleted         = (tmp & 0x00700000) ? 1 : 0;
  def_s.set_flags.inherit         = (tmp & 0x00400000) ? 1 : 0;
  def_s.set_flags.secret          = (tmp & 0x00200000) ? 1 : 0;
  def_s.set_flags.hide_creator    = (tmp & 0x00100000) ? 1 : 0;
  def_s.clear_flags.deleted       = (tmp & 0x00070000) ? 1 : 0;
  def_s.clear_flags.inherit       = (tmp & 0x00040000) ? 1 : 0;
  def_s.clear_flags.secret        = (tmp & 0x00020000) ? 1 : 0;
  def_s.clear_flags.hide_creator  = (tmp & 0x00010000) ? 1 : 0;

  def_s.tag = item->tag;
  def_s.inherit_limit = 0;
  def_s.name = "extended-default";


  / * If it wasn't extended, then it was simple, because it sure
  wasn't predefined. * /

  if (!extended)
  {
  return &simple_aux_item;
  }

  return &def_s;
*/

    return &simple_aux_item;
257
258
259
}


260
261
262
263
264
/*
 * aux_item_find_trigger
 */

Aux_item_trigger
265
aux_item_find_trigger(const char *trigger_name)
266
267
268
269
270
271
272
273
274
275
276
277
{
    unsigned long i = 0;

    while (aux_item_triggers[i].name != NULL)
    {
        if (!strcmp(aux_item_triggers[i].name, trigger_name))
            return aux_item_triggers[i].function;
        i += 1;
    }
    return NULL;
}

David Byers's avatar
David Byers committed
278
Aux_item_validation_function
279
aux_item_find_validator(const char *validator_name)
David Byers's avatar
David Byers committed
280
281
282
283
284
285
286
287
288
289
290
291
292
{
    unsigned long i = 0;

    while (aux_item_validators[i].name != NULL)
    {
        if (!strcmp(aux_item_validators[i].name, validator_name))
            return aux_item_validators[i].function;
        i += 1;
    }
    return NULL;
}


293
294
295
296
297
298
299
/*
 * find_aux_item_definition
 *
 * Return the definition of ITEM or NULL if it does not
 * have a valid information.
 */

300
static const Aux_item_definition *
301
find_aux_item_definition(const Aux_item *item)
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
{
    Aux_item_definition *def;

    def = aux_item_definition_list;
    while (def != NULL)
    {
        if (def->tag == item->tag)
            return def;
        def = def->next;
    }

    return aux_item_default_definition(item);
}


/* 
 * ======================================================================
 * UTILITY FUNCTIONS
 * ======================================================================
 */
 
David Byers's avatar
David Byers committed
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

/* TRIGGER THINGS */


static void
aux_item_fix_trigger_data(Aux_item_trigger_data *data)
{
    switch (data->object_type)
    {
    case TEXT_OBJECT_TYPE:
        data->item = &((Text_stat *)data->object)->aux_item_list.items[data->item_index];
        break;
    case CONF_OBJECT_TYPE:
        data->item = &((Conference *)data->object)->aux_item_list.items[data->item_index];
        break;
    case INFO_OBJECT_TYPE:
        data->item = &((Info *)data->object)->aux_item_list.items[data->item_index];
        break;

    default:
        break;
    }
}


static void
349
aux_item_call_add_triggers(const Aux_item_definition *def,
350
			   enum object_type object_type,
David Byers's avatar
David Byers committed
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
			   unsigned long item_index,
			   unsigned long integer_argument,
			   void     * pointer_argument,
                           Aux_item * item)
{
    unsigned long i;
    Aux_item_trigger_data data;
    
    data.action = AUX_ITEM_ADD_ACTION;
    data.object_type = object_type;
    data.item_index = item_index;
    data.object_no = integer_argument;
    data.object = pointer_argument;
    data.item = item;

    for (i = 0; i < def->num_add_triggers; i++)
    {
        (*(def->add_triggers[i]))(&data);
        aux_item_fix_trigger_data(&data);
    }
}

static void
374
aux_item_call_delete_triggers(const Aux_item_definition *def,
375
                              enum object_type object_type,
David Byers's avatar
David Byers committed
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
                              unsigned long item_index,
                              unsigned long integer_argument,
                              void     * pointer_argument,
                              Aux_item *item)
{
    unsigned long i;
    Aux_item_trigger_data data;
    
    data.action = AUX_ITEM_DELETE_ACTION;
    data.object_type = object_type;
    data.item_index = item_index;
    data.object_no = integer_argument;
    data.object = pointer_argument;
    data.item = item;

    for (i = 0; i < def->num_delete_triggers; i++)
    {
        (*(def->delete_triggers[i]))(&data);
    }
}

static void
398
aux_item_call_undelete_triggers(const Aux_item_definition *def,
399
				enum object_type object_type,
David Byers's avatar
David Byers committed
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
				unsigned long item_index,
				unsigned long integer_argument,
				void     * pointer_argument,
                                Aux_item * item)
{
    unsigned long i;
    Aux_item_trigger_data data;
    
    data.action = AUX_ITEM_UNDELETE_ACTION;
    data.object_type = object_type;
    data.item_index = item_index;
    data.object_no = integer_argument;
    data.object = pointer_argument;
    data.item = item;

    for (i = 0; i < def->num_undelete_triggers; i++)
    {
        (*(def->undelete_triggers[i]))(&data);
    }
}



423
424
425
426
427
428
429
430
431
432
433
434
435
436
/*
 * initialize_aux_items
 *
 * Initialize this code and its data structures
 */

void
aux_item_definition_add(Aux_item_definition *def)
{
    Aux_item_definition     *new_definition;

    new_definition = smalloc(sizeof(Aux_item_definition));
    if (new_definition == NULL)
    {
David Byers's avatar
David Byers committed
437
        restart_kom("out of memory adding aux-item definition");
438
439
440
441
442
443
444
445
    }
    *new_definition = *def;
    num_aux_item_definitions += 1;

    new_definition->next = aux_item_definition_list;
    aux_item_definition_list = new_definition;
}

David Byers's avatar
David Byers committed
446
447
448
449
450
451
452


/*
 * Compile the verification regexp for the definition in DEF
 * and put the result somewhere convenient.
 */

Per Cederqvist's avatar
Per Cederqvist committed
453
static void
454
aux_item_definition_cache_regexp(const Aux_item_definition *def,
David Byers's avatar
David Byers committed
455
                                 unsigned long ix)
456
457
458
459
460
461
{
    struct re_pattern_buffer   *pat_buf;
    const char                 *errmsg;

    re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
            
David Byers's avatar
David Byers committed
462
463
    def->validators[ix].v.re.cached_re_buf = smalloc(sizeof(*pat_buf));
    if (def->validators[ix].v.re.cached_re_buf == NULL)
464
    {
David Byers's avatar
David Byers committed
465
466
467
        kom_log("Out of memory compiling aux-item regexp %lu (%s).\n",
                def->tag,
                def->name);
468
469
        return;
    }
David Byers's avatar
David Byers committed
470
    pat_buf = def->validators[ix].v.re.cached_re_buf;
471
472
473
474
475
476
477
    pat_buf->translate = DEFAULT_COLLAT_TAB;
    pat_buf->translate = NULL;
    pat_buf->fastmap = 0;
    pat_buf->allocated = 0;
    pat_buf->buffer = 0;

    if ((errmsg =
David Byers's avatar
David Byers committed
478
479
         re_compile_pattern(def->validators[ix].v.re.regexp,
                            strlen(def->validators[ix].v.re.regexp),
480
481
482
                            pat_buf))
        != NULL)
    {
David Byers's avatar
David Byers committed
483
        kom_log("%s in validate regexp of aux-item definition %lu (%s).\n",
484
485
486
                errmsg,
                def->tag,
                def->name);
David Byers's avatar
David Byers committed
487
488
        if (def->validators[ix].v.re.cached_re_buf)
            sfree(def->validators[ix].v.re.cached_re_buf);
David Byers's avatar
David Byers committed
489
490
        if (def->validators[ix].v.re.regexp)
            string_free(def->validators[ix].v.re.regexp);
David Byers's avatar
David Byers committed
491
        def->validators[ix].v.re.cached_re_buf = NULL;
David Byers's avatar
David Byers committed
492
        def->validators[ix].v.re.regexp = NULL;
493
494
495
496
497
498
499
        return;
    }
}

void
initialize_aux_items(char *aux_def_file)
{
500
#if COMPILED_AUX_ITEMS
501
502
503
504
505
506
507
508
509
    unsigned long                i;

    /* Set up precompiled items */
    for (i = 0;
         i < (sizeof(compiled_aux_items)/sizeof(*compiled_aux_items));
         i++)
    {
        aux_item_definition_add(&compiled_aux_items[i]);
    }
510
#endif
511
512
513
514

    /* Read definitions from configuration file */

    parse_aux_item_definitions(aux_def_file);
David Byers's avatar
David Byers committed
515
}
516

David Byers's avatar
David Byers committed
517
518
519
520
521
522
void
free_aux_item_definitions(void)
{
    unsigned long i;
    Aux_item_definition *def;
    Aux_item_definition *tmp;
David Byers's avatar
David Byers committed
523

David Byers's avatar
David Byers committed
524
    def = aux_item_definition_list;
525
526
    while (def != NULL)
    {
David Byers's avatar
David Byers committed
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
        string_free(def->name);
        for (i = 0; i < def->num_validators; i++)
        {
            if (def->validators[i].type == AUX_VALIDATE_REGEXP)
            {
                if (def->validators[i].v.re.regexp != NULL)
                    string_free(def->validators[i].v.re.regexp);
                if (def->validators[i].v.re.cached_re_buf != NULL)
                    sfree(def->validators[i].v.re.cached_re_buf);
            }
        }
        if (def->validators != NULL)
        {
            sfree(def->validators);
            def->validators = NULL;
            def->num_validators = 0;
        }
        if (def->add_triggers != NULL)
        {
            sfree(def->add_triggers);
            def->add_triggers = NULL;
            def->num_add_triggers = 0;
        }
        if (def->delete_triggers != NULL)
        {
            sfree(def->delete_triggers);
            def->delete_triggers = NULL;
            def->num_delete_triggers = 0;
        }
        if (def->undelete_triggers != NULL)
        {
            sfree(def->undelete_triggers);
            def->undelete_triggers = NULL;
            def->num_undelete_triggers = 0;
        }
        tmp = def->next;
        sfree(def);
        def = tmp;
565
    }
David Byers's avatar
David Byers committed
566
567

    aux_item_definition_list = NULL;
568
569
570
}


571

572
static long
573
find_aux_item_index(const Aux_item_list *list, unsigned long aux_no)
574
575
{
    unsigned long i;
David Byers's avatar
David Byers committed
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593

    for (i = 0; i < list->length; i++)
    {
        if (list->items[i].aux_no == aux_no)
            return i;
    }

    return -1;
}


/* Find the aux item list containing the item that ITEM is linked to */

static Aux_item_list *
find_linked_aux_item_list(Aux_item *item)
{
    Text_stat       *text_stat;
    Conference      *conf_stat;
594
    
David Byers's avatar
David Byers committed
595
596
597
598
    switch (item->linked_item.target_type)
    {
    case NO_OBJECT_TYPE:
        return NULL;
599

David Byers's avatar
David Byers committed
600
601
602
603
604
605
606
607
608
609
610
    case TEXT_OBJECT_TYPE:
        GET_T_STAT(text_stat, item->linked_item.target_object.text, NULL);
        return &text_stat->aux_item_list;

    case CONF_OBJECT_TYPE:
        GET_C_STAT(conf_stat, item->linked_item.target_object.conf, NULL);
        return &conf_stat->aux_item_list;

    case INFO_OBJECT_TYPE:
        return &kom_info.aux_item_list;

611
#if 0
David Byers's avatar
David Byers committed
612
    case PERS_OBJECT_TYPE:
613
#endif
David Byers's avatar
David Byers committed
614
615
    default:
        /* No lists in these items */
616
617
        kom_log("find_linked_aux_item_list: Bad aux_item somewhere: "
		"link to person or other kind.\n");
David Byers's avatar
David Byers committed
618
619
620
621
622
623
        return NULL;
    }
}

/* Find the aux item that ITEM is linked to */

624
static const Aux_item *
David Byers's avatar
David Byers committed
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
find_linked_aux_item(Aux_item *item)
{
    Aux_item_list       *target_list;

    target_list = find_linked_aux_item_list(item);
    if (target_list == NULL)
        return NULL;

    return find_aux_item(target_list, item->linked_item.target_item);
}

/* Mark the object linked to by an aux_item as changed */

static void
mark_linked_object_as_changed(Aux_item *item)
{
    Text_stat       *text_stat;
    Conference      *conf_stat;

    switch (item->linked_item.target_type)
645
    {
David Byers's avatar
David Byers committed
646
647
648
649
650
651
652
653
654
655
656
    case TEXT_OBJECT_TYPE:
        VOID_GET_T_STAT(text_stat, item->linked_item.target_object.text);
        mark_text_as_changed(item->linked_item.target_object.text);
        break;

    case CONF_OBJECT_TYPE:
        VOID_GET_C_STAT(conf_stat, item->linked_item.target_object.conf);
        mark_conference_as_changed(item->linked_item.target_object.conf);
        break;

    case INFO_OBJECT_TYPE:
657
#if 0
David Byers's avatar
David Byers committed
658
    case PERS_OBJECT_TYPE:
659
#endif
David Byers's avatar
David Byers committed
660
661
    default:
        /* Need no commit for these objects */
662
	;
663
664
665
    }
}

David Byers's avatar
David Byers committed
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681



/*
 * Utility function for linking aux items. This function will take
 * care of adding the appropriate item to the appropriate list.
 *
 * Note that this may cause aux-item lists to be realloced, so pointers
 * into such lists may become invalid. Take particular care with the
 * pointers in aux-item trigger data
 *
 * Call aux_item_fix_trigger_data if you need to fix the contents of
 * trigger data after calling this function.
 */


Per Cederqvist's avatar
Per Cederqvist committed
682
static void
683
684
685
686
687
688
689
690
691
aux_item_link_items(enum object_type src_type,  /* Source object type */
                    unsigned long    src_no,    /* Source object pointer */
                    void            *src_ptr,   /* Source pointer */
                    Aux_item        *src_item,  /* Source item */

                    enum object_type dst_type,  /* Destination obj type */
                    unsigned long    dst_no,    /* Destination obj pointer */
                    void            *dst_ptr,   /* Destination pointer */
                    Aux_item        *dst_item_data)
692
{
David Byers's avatar
David Byers committed
693
    Aux_item_list       item_list;
694

David Byers's avatar
David Byers committed
695
696
697
    /* Get a pointer to the destination object */

    if (dst_ptr == NULL)
698
    {
David Byers's avatar
David Byers committed
699
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
        switch (dst_type)
        {
        case TEXT_OBJECT_TYPE:
            dst_ptr = cached_get_text_stat(dst_no);
            break;
        case CONF_OBJECT_TYPE:
            dst_ptr = cached_get_conf_stat(dst_no);
            break;
        case INFO_OBJECT_TYPE:
            dst_ptr = &kom_info;
            break;
        default:
            break;
        }
    }

    if (dst_ptr == NULL || src_ptr == NULL)
        return;


    /* Set up the linking information in the destination item */

    dst_item_data->linked_item.target_type = src_type;
    dst_item_data->linked_item.target_item = src_item->aux_no;
    switch (src_type)
    {
    case TEXT_OBJECT_TYPE: dst_item_data->linked_item.target_object.text = src_no; break;
    case CONF_OBJECT_TYPE: dst_item_data->linked_item.target_object.conf = src_no; break;
    case INFO_OBJECT_TYPE:
    default:
        dst_item_data->linked_item.target_object.text = 0;
730
    }
David Byers's avatar
David Byers committed
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


    /* Set up the linking information in the source item */

    src_item->linked_item.target_type = dst_type;
    src_item->linked_item.target_item = 0;
    switch (dst_type)
    {
    case TEXT_OBJECT_TYPE:
        src_item->linked_item.target_object.text = dst_no;
        src_item->linked_item.target_item = ((Text_stat *)dst_ptr)->highest_aux + 1;
        break;
    case CONF_OBJECT_TYPE:
        src_item->linked_item.target_object.conf = dst_no;
        src_item->linked_item.target_item = ((Conference *)dst_ptr)->highest_aux + 1;
        break;
    case INFO_OBJECT_TYPE:
        src_item->linked_item.target_item = ((Info *)dst_ptr)->highest_aux_no + 1;
        src_item->linked_item.target_object.text = 0;
        src_item->linked_item.target_object.conf = 0;
        break;
    default:
        src_item->linked_item.target_item = 0;
        src_item->linked_item.target_object.text = 0;
        src_item->linked_item.target_object.conf = 0;
    }


    /* Set up an item list to add */

    item_list.length = 1;
    item_list.items = dst_item_data;
David Byers's avatar
Server:    
David Byers committed
763
    prepare_aux_item_list(&item_list, src_item->creator);
David Byers's avatar
David Byers committed
764
765
766
767
768
769
770
771
772
773
774
775
776


    /*
     * Add the item and mark the destination as changed
     *
     * Note that these calls may cause the aux item list of the
     * destination to move in memory due to calls to realloc.
     */

    switch (dst_type)
    {
    case TEXT_OBJECT_TYPE:
        text_stat_add_aux_item_list((Text_stat *)dst_ptr,
David Byers's avatar
Server:    
David Byers committed
777
778
                                    (Text_no)dst_no, &item_list,
                                    src_item->creator);
779
	/* FIXME (bug 141): is this necessary?  The call to
780
781
	   mark_linked_object_as_changed below seems to fix this,
	   right?  --ceder 1999-07-10. */
David Byers's avatar
David Byers committed
782
783
784
785
        mark_text_as_changed((Text_no)dst_no);
        break;
    case CONF_OBJECT_TYPE:
        conf_stat_add_aux_item_list((Conference *)dst_ptr,
David Byers's avatar
Server:    
David Byers committed
786
787
                                    (Conf_no)dst_no, &item_list,
                                    src_item->creator);
788
	/* FIXME (bug 141): is this necessary?  The call to
789
790
	   mark_linked_object_as_changed below seems to fix this,
	   right?  --ceder 1999-07-10. */
David Byers's avatar
David Byers committed
791
792
793
794
        mark_conference_as_changed((Conf_no)dst_no);
        break;

    case INFO_OBJECT_TYPE:
David Byers's avatar
Server:    
David Byers committed
795
796
        system_add_aux_item_list((Info *)dst_ptr, &item_list,
                                 src_item->creator);
David Byers's avatar
David Byers committed
797
798
799
800
801
802
803
804
805
806
807
808
        break;

    default:
        break;
    }

    /*
     * Set src_item to NULL since there is a chance that it is
     * no longer valid (this happens when the source and destination
     * objects are the same and reallocing the aux item list causes
     *  it to move in memory
     */
809
    /* FIXME (bug 142): but src_item isn't used below this point!  What is the
810
       point of setting it to NULL?  --ceder 1999-07-10.  */
David Byers's avatar
David Byers committed
811
812
813
814
815
816
817
818

    src_item = NULL;

    /*
     * Mark the source object as changed
     */

    mark_linked_object_as_changed(dst_item_data);
819
820
}

David Byers's avatar
David Byers committed
821
822
823



Per Cederqvist's avatar
Per Cederqvist committed
824
static void
David Byers's avatar
David Byers committed
825
826
aux_item_list_add_items(Aux_item_list *add_to_list,
                        Aux_item_list *items_to_add,
827
                        enum object_type object_type,
David Byers's avatar
David Byers committed
828
829
830
831
                        unsigned long  object_no,
                        void          *object_ptr,
                        unsigned long *highest_ptr,
                        Pers_no        item_creator)
832
{
David Byers's avatar
David Byers committed
833
834
835
    unsigned long       i;
    unsigned long       highest_local;
    unsigned long       start_index;
836

David Byers's avatar
David Byers committed
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
    if (items_to_add == NULL)
        return;

    /*
     * Make local copies of variables we need in their original state
     */

    start_index = add_to_list->length;
    highest_local = *highest_ptr;

    /*
     * Set up the target list so it looks like we've added
     * items to it already. That way it is semi-safe to call
     * this function recursively.
     */

    add_to_list->items = srealloc(add_to_list->items,
                                  (add_to_list->length + items_to_add->length) *
                                  sizeof(Aux_item));
    add_to_list->length += items_to_add->length;
    *highest_ptr = *highest_ptr + items_to_add->length;

    for (i = 0; i < items_to_add->length; i++)
860
    {
David Byers's avatar
David Byers committed
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
        init_aux_item(&add_to_list->items[start_index + i]);
    }

    /*
     * Now add the items and call the add triggers
     */

    for (i = 0; i < items_to_add->length; i++)
    {
        highest_local += 1;
        copy_aux_item(&add_to_list->items[i + start_index],
                      &items_to_add->items[i]);
        add_to_list->items[i + start_index].aux_no  = highest_local;
        add_to_list->items[i + start_index].creator = item_creator;
        aux_item_call_add_triggers(
            find_aux_item_definition(&items_to_add->items[i]),
            object_type,
            i + start_index,
            object_no,
            object_ptr,
            &add_to_list->items[i + start_index]);
882
883
    }
}
884

David Byers's avatar
David Byers committed
885
886
887



888
889
890
891
892
893
894
895
896
897
898
899
/*
 * prepare_aux_item_list
 *
 * Prepare items in LIST for checking and addition. You *have*
 * to call this before any of the addition or checking
 * function. CREATOR is the person who wants to create the
 * item list. This function will set various fields in the
 * items. UTSL.
 */

void
prepare_aux_item_list(Aux_item_list *list,
900
                      Pers_no creator)
901
902
903
904
905
906
907
908
{
    unsigned long i;

    if (list == NULL)
        return;
    
    for (i = 0; i < list->length; i++)
    {
909
        prepare_aux_item(&list->items[i], creator, NULL);
910
911
912
913
914
    }
}

void prepare_aux_item(Aux_item *item,
                      Pers_no creator,
915
                      const Aux_item_definition *def)
916
917
918
919
920
921
922
923
924
925
{
    if (item == NULL)
        return;
    def = def ? def : find_aux_item_definition(item);
    if (def == NULL)
        return;

    AUX_ADJUST_FLAG(inherit);
    AUX_ADJUST_FLAG(secret);
    AUX_ADJUST_FLAG(hide_creator);
926
    AUX_ADJUST_FLAG(dont_garb);
927
928
929
930
931
932
933
934
935
936
937
938
    AUX_ADJUST_FLAG(reserved3);
    AUX_ADJUST_FLAG(reserved4);
    AUX_ADJUST_FLAG(reserved5);
    /* AUX_ADJUST_FLAG(deleted); */
    item->flags.deleted = 0;

    if (def->inherit_limit != 0 &&
        (item->inherit_limit > def->inherit_limit ||
         item->inherit_limit == 0))
        item->inherit_limit = def->inherit_limit;

    item->creator = creator;
939
    item->sent_at = current_time;
David Byers's avatar
David Byers committed
940
941
942
943
944
945
946
}



static Bool aux_item_validate(Aux_item_validation_data validation_data)
{
    unsigned long               i;
947
    const Aux_item_definition        *def;
David Byers's avatar
David Byers committed
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986

    def = validation_data.def;
    for (i = 0; i < def->num_validators; i++)
    {
        switch (def->validators[i].type)
        {
        case AUX_VALIDATE_FUNCTION:
            /*
             * Call the validation function
             * If it returns false, then abort validation
             * If it returns true, then continue with the
             * next validator
             */

            if ((*def->validators[i].v.fn.function)(&validation_data) == FALSE)
            {
                return FALSE;
            }
            break;

        case AUX_VALIDATE_REGEXP:

            /*
             * Ensure that the regexp is cached
             */
            
            if (def->validators[i].v.re.cached_re_buf == NULL)
            {
                aux_item_definition_cache_regexp(def, i);
            }

            /*
             * If the RE is still not cached there is a problem
             * in this case to not validate the item at all and
             * log a problem
             */

            if (def->validators[i].v.re.cached_re_buf == NULL)
            {
987
988
                kom_log("Failed to cache regexp validator for \"%s\". "
			"Rejecting all such items\n",
David Byers's avatar
David Byers committed
989
                        def->name);
David Byers's avatar
David Byers committed
990
991
                sfree(def->validators[i].v.re.regexp);
                def->validators[i].v.re.regexp = NULL;
David Byers's avatar
David Byers committed
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
                def->validators[i].type = AUX_VALIDATE_REJECT;
                kom_errno = KOM_ILL_AUX;
                return FALSE;
            }

            /*
             * RE is compiled and can be used
             */

            switch (re_search(def->validators[i].v.re.cached_re_buf,
                              validation_data.item->data.string,
                              s_strlen(validation_data.item->data),
                              0,
                              s_strlen(validation_data.item->data),
                              NULL))
            {
            case -1:
                /* No match */
                kom_errno = KOM_ILL_AUX;
                return FALSE;
            case -2:
                /* Internal error may (be temporary) */
1014
                kom_log("Internal error in regex matching aux-item data.\n");
David Byers's avatar
David Byers committed
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
                kom_errno = KOM_ILL_AUX;
                return FALSE;
                break;
            default:
                /* Matched */
                break;
            }
            

            break;

        case AUX_VALIDATE_REJECT:
            /*
             * Just reject the item. Used when we detect a problem
             * with a validator
             */

            kom_errno = KOM_ILL_AUX;
            return FALSE;
            break;

        default:
1037
            kom_log("BUG: unknown aux_item validator type\n");
David Byers's avatar
David Byers committed
1038

David Byers's avatar
David Byers committed
1039
1040
1041
1042
1043
1044
1045
1046
1047
        }
    }

    /*
     * If we got all the way to here we passed all the validators
     */

    return TRUE;

1048
1049
}

David Byers's avatar
David Byers committed
1050

1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
/*
 * aux_item_add_perm
 *
 * Check if it is alright to add an aux_item.
 *
 * ITEM is the item that you want to add.
 * DEF is the item's definition or NULL.
 * ITEM_CREATOR is the person who wants to create the item.
 * OBJECT_CREATOR is the person who created the object to which
 *     the item might be added. For texts it is the author, for
 *     persons it is the person and for conferences it is the
 *     conference supervisor.
 * OWNER_CHECK is TRUE when this function is supposed to check author
Per Cederqvist's avatar
Per Cederqvist committed
1064
 *     and supervisor-related flags. The only case when this is to
1065
1066
1067
1068
1069
 *     be FALSE is when checking author or supervisor makes not sense,
 *     such as when creating a completely new conference.
 * ADD_TO_LIST is the item list to add to, or NULL.
 * START_LOOKING_AT is the first index in add_to_list to start
 *     looking at for possible duplicates.
1070
 * CREATING is true if we are checking while creating an object
1071
1072
 */

1073
static Bool
1074
1075
aux_item_add_perm(const Aux_item *item,
                  const Aux_item_definition *def,
1076
1077
1078
1079
                  Pers_no item_creator,
                  Pers_no object_creator,
                  Bool owner_check,
                  Aux_item_list *add_to_list,
1080
1081
                  unsigned long start_looking_at,
                  Bool creating,
1082
                  enum object_type object_type
1083
                  )
1084
{
1085
1086
    short can_add_when = 0;
    
David Byers's avatar
David Byers committed
1087
1088
    kom_errno = KOM_NO_ERROR;

1089
1090
    if (def == NULL)
	def = find_aux_item_definition(item);
1091
1092
1093
1094

    /* Can't create an item with no definition */
      
    if (def == NULL)
David Byers's avatar
David Byers committed
1095
1096
    {
        kom_errno = KOM_ILL_AUX;
1097
        return FALSE;
David Byers's avatar
David Byers committed
1098
    }
1099

David Byers's avatar
David Byers committed
1100
1101
1102
1103
1104
1105
    if (def->disabled)
    {
        kom_errno = KOM_ILL_AUX;
        return FALSE;
    }

1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
    switch (object_type)
    {
    case TEXT_OBJECT_TYPE: can_add_when = def->text_a; break;
    case CONF_OBJECT_TYPE: can_add_when = def->conf_a; break;
    default: can_add_when = 0;
    }

    if (can_add_when)
    {
        if (!((creating  && (can_add_when & AUX_ITEM_ADD_ON_CREATE)) ||
              (!creating && (can_add_when & AUX_ITEM_ADD_ON_MODIFY))))
        {
David Byers's avatar
David Byers committed
1118
            kom_errno = KOM_AUX_PERM;
1119
1120
1121
1122
            return FALSE;
        }
    }

David Byers's avatar
David Byers committed
1123
1124
1125
1126
1127
1128
1129
    if (def->system_only &&
        owner_check)
    {
        kom_errno = KOM_AUX_PERM;
        return FALSE;
    }

1130
1131
1132
1133
    /* FIXME (bug 334): the is_strictly_supervisor() call checks if
       item_creator is supervisor of object_creator.  The intention is
       to check if item_creator is supervisor of conference X, where
       X's supervisor is object_creator. */
1134
1135
1136
    if (def->author_only &&
        owner_check &&
        object_creator != item_creator &&
1137
        !is_strictly_supervisor(object_creator, item_creator, NULL) &&
David Byers's avatar
Server    
David Byers committed
1138
        !(item_creator == ACTPERS && ENA(wheel, 8))) /* NOT OK! */
1139
    {
David Byers's avatar
David Byers committed
1140
1141
        kom_errno = KOM_AUX_PERM;
        return FALSE;
1142
1143
    }

1144
1145
1146
1147
    /* FIXME (bug 334): the is_strictly_supervisor() call checks if
       item_creator is supervisor of object_creator.  The intention is
       to check if item_creator is supervisor of conference X, where
       X's supervisor is object_creator. */
1148
1149
    if (def->supervisor_only &&
         owner_check &&
1150
        !is_strictly_supervisor(object_creator, item_creator, NULL) &&
David Byers's avatar
Server    
David Byers committed
1151
        !(item_creator == ACTPERS && ENA(wheel,8))) /* NOT OK! */
1152
    {
David Byers's avatar
David Byers committed
1153
        kom_errno = KOM_AUX_PERM;
1154
1155
1156
1157
1158
1159
        return FALSE;
    }

    /* Even the administrator can't override this */

    if (!aux_item_check_unique(item, def, add_to_list, start_looking_at))
David Byers's avatar
David Byers committed
1160
1161
    {
        kom_errno = KOM_AUX_PERM;
1162
        return FALSE;
David Byers's avatar
David Byers committed
1163
    }
1164
1165
1166

    /* Check the contents */

David Byers's avatar
David Byers committed
1167
    if (def->num_validators > 0)
1168
    {
David Byers's avatar
David Byers committed
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
        Aux_item_validation_data validation_data;

        validation_data.item = item;
        validation_data.def = def;
        validation_data.item_creator = item_creator;
        validation_data.object_creator = object_creator;
        validation_data.owner_check = owner_check;
        validation_data.add_to_list = add_to_list;
        validation_data.start_looking_at = start_looking_at;
        validation_data.creating = creating;
        validation_data.object_type = object_type;

        if (aux_item_validate(validation_data) != TRUE)
David Byers's avatar
David Byers committed
1182
1183
        {
            kom_errno = KOM_ILL_AUX;
1184
            return FALSE;
David Byers's avatar
David Byers committed
1185
        }
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
    }

    return TRUE;
}


/*
 * aux_item_check_unique
 *
 * Check whether there are items that block creation of a new item.
 * ITEM is the item we want to add.
 * DEF is the item's definitioon
 * ADD_TO_LIST is the list we want to add to
 * START_LOOKING_AT is the first index in the list to look at.
 */

static Bool
1203
1204
aux_item_check_unique(const Aux_item *item,
                      const Aux_item_definition *def,
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
                      Aux_item_list *add_to_list,
                      unsigned long start_looking_at)
{
    unsigned long i;

    if (add_to_list == NULL ||
        item == NULL ||
        start_looking_at >= add_to_list->length)
        return TRUE;

1215
1216
    if (def != NULL)
	def = find_aux_item_definition(item);
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
    if (def == NULL || !def->one_per_person)
        return TRUE;

    for (i = start_looking_at; i < add_to_list->length; i++)
    {
        if (add_to_list->items[i].tag == item->tag &&
            add_to_list->items[i].creator == item->creator &&
            !add_to_list->items[i].flags.deleted)
            return FALSE;
    }

    return TRUE;
}


/*
 * aux_inherit_items
 *
 * Inherit aux items from PARENT to TARGET. COUNTER is a pointer
 * to the aux_no counter in the object being inherited to and CREATOR
 * is the author or equivalent of the target object.
 */

void
aux_inherit_items(Aux_item_list *target,
1242
                  const Aux_item_list *parent,
1243
                  unsigned long *counter,
1244
1245
                  Pers_no target_creator,
                  Bool creating,
1246
                  enum object_type object_type,
1247
1248
                  unsigned long object_no,
                  void *object)
1249
1250
1251
{
    int i;
    Aux_item item;
1252
    const Aux_item_definition *def;
1253

David Byers's avatar
David Byers committed
1254
    /* Inheriting linked items is strange, but works. */
David Byers's avatar
David Byers committed
1255

1256
1257
1258
1259
1260
1261
1262
1263
    if (!target || !parent)
        return;

    for (i = 0; i < parent->length; i++)
    {
        if (parent->items[i].flags.inherit &&
            !parent->items[i].flags.deleted &&
            parent->items[i].inherit_limit != 1)
1264
	{
1265
1266
1267
1268
1269
1270
1271
1272
            def = find_aux_item_definition(&parent->items[i]);
            if (def == NULL ||
                !aux_item_add_perm(&parent->items[i],
                                   def,
                                   parent->items[i].creator,
                                   target_creator,
                                   TRUE,
                                   target,
1273
1274
1275
                                   0,
                                   creating,
                                   object_type
1276
1277
1278
                                   ))
                continue;

David Byers's avatar
David Byers committed
1279
            copy_aux_item(&item, &parent->items[i]);
David Byers's avatar
David Byers committed
1280
            init_aux_item_link(&item.linked_item);
1281
            prepare_aux_item(&item, parent->items[i].creator, def);
1282
1283
1284
            if (item.inherit_limit != 0)
                item.inherit_limit -= 1;
            
David Byers's avatar
David Byers committed
1285
1286
1287
1288
1289
1290
            target->items = srealloc(target->items,
                                    (target->length + 1) * sizeof(Aux_item));
            target->items[target->length] = item;
            *counter += 1;
            target->items[target->length].aux_no = *counter;
            target->length += 1;
1291
1292
1293
1294
1295

            aux_item_call_add_triggers(def,
                                       object_type,
                                       target->length - 1,
                                       object_no,
David Byers's avatar
David Byers committed
1296
1297
                                       object,
                                       &target->items[target->length]);
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
        }
    }
}

/*
 * filter_aux_item_list
 *
 * Filter out information in ORIGINAL that VIEWER is not allowed
 * to see. Copies of the items are placed in RESULT. VIEWER_P is
 * the Person corresponding to viewer or NULL. All memory is
 * allocated with tmp_alloc
 */

void
1312
1313
1314
filter_aux_item_list(const Aux_item_list *original,
                     Aux_item_list       *result,
                     const Connection    *viewer_conn)
1315
1316
1317
{
    Aux_item        *orig_aux;
    unsigned long    from, to;
David Byers's avatar
Server    
David Byers committed
1318
1319
    /*    Pers_no          viewer;
          Person        *viewer_p;*/
1320
1321
1322
1323
1324
1325
1326
1327
1328

    result->items = tmp_alloc(original->length * sizeof (Aux_item));
    result->length = 0;
    to = 0;

    for (from = 0; from < original->length; from++)
    {
        orig_aux = &original->items[from];
        if ( orig_aux->flags.secret &&
1329
             !is_supervisor(orig_aux->creator,
David Byers's avatar
Server    
David Byers committed
1330
1331
                            viewer_conn->pers_no, viewer_conn->person) &&
             !ENA_C(viewer_conn, admin, 4))
1332
1333
1334
1335
1336
            continue;

        result->items[to] = *orig_aux;

        if (orig_aux->flags.hide_creator &&
1337
             !is_supervisor(orig_aux->creator,
David Byers's avatar
Server    
David Byers committed
1338
1339
                            viewer_conn->pers_no, viewer_conn->person) &&
             !ENA_C(viewer_conn, admin, 4))
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
            result->items[to].creator = 0;

        result->length += 1;
        to += 1;
    }
}

/*
 * check_delete_aux
 *
 * Return TRUE if ACTPERS may delete ITEM. DEF is the item's definition
 * or NULL.
 */

Success
1355
check_delete_aux_item_list(const Number_list *items_to_delete,
1356
1357
                           const Aux_item_list *list_to_delete_from,
                           const Conf_no owner)
1358
{
David Byers's avatar
David Byers committed
1359
    long i;
1360
1361
    const Aux_item *item;
    const Aux_item_definition *def;
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373

    for (i = 0; i < items_to_delete->length; i++)
    {
        if (items_to_delete->data[i] == 0)
            continue;


        /* Get pointer to the item and to its definition */

        if ((item = find_aux_item(list_to_delete_from,
                                  items_to_delete->data[i])) == NULL)
        {
David Byers's avatar
David Byers committed
1374
            kom_errno = KOM_AUX_PERM;
1375
1376
1377
1378
1379
1380
1381
1382
            err_stat = i;
            return FAILURE;
        }


        /* Check all sorts of permissions */

        def = find_aux_item_definition(item);
1383
1384


1385
1386
        if (def == NULL)
	{
1387
1388
1389
            kom_errno = KOM_AUX_PERM;
            err_stat = i;
            return FAILURE;
1390
1391
1392
        }
	else if (def->may_not_delete)
	{
1393
1394
1395
            kom_errno = KOM_AUX_PERM;
            err_stat = i;
            return FAILURE;
1396
1397
1398
1399
1400
        }
	else if (item->creator == 0)
	{
            if (!ENA(wheel, 8))
	    {
1401
1402
1403
1404
                kom_errno = KOM_AUX_PERM;
                err_stat = i;
                return FAILURE;
            }
1405
1406
1407
        }
	else if (item->creator != ACTPERS)
	{
1408
1409
            if (!ENA(wheel, 8) &&
                !is_supervisor(item->creator, ACTPERS, NULL) &&
1410
1411
                (!def->owner_delete || !is_supervisor(owner, ACTPERS, NULL)))
	    {
1412
1413
1414
1415
                kom_errno = KOM_AUX_PERM;
                err_stat = i;
                return FAILURE;
            }
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
        }

        /* For already deleted items, clear them out of the list */

        if (item->flags.deleted)
            items_to_delete->data[i] = 0;
    }

    return OK;
}

/*
 * delete_aux_item_list
 *
 * Mark ITEM as deleted. LIST is the list we're deleting
 * the item from.
David Byers's avatar
David Byers committed
1432
1433
 *
 * Call commit_aux_item_list to make the changes permanent
1434
1435
1436
 */
 
void
1437
delete_aux_item_list(const Number_list *items_to_delete,
1438
                     Aux_item_list *list_to_delete_from,
1439
                     enum object_type object_type,
1440
1441
                     unsigned long object_no,
                     void *object)
1442
{
David Byers's avatar
David Byers committed
1443
    long i;
1444
    Aux_item *item;
1445
    const Aux_item *linked_item;
David Byers's avatar
David Byers committed
1446
    long item_index;
David Byers's avatar
David Byers committed
1447
1448
1449
1450
1451
    long            item_to_delete;
    unsigned long   linked_object_no;
    Number_list     linked_delete;
    Aux_item_list   *linked_item_list;
    void            *linked_object;
1452
1453
1454
1455
1456
1457

    for (i = 0; i < items_to_delete->length; i++)
    {
        if (items_to_delete->data[i] == 0)
            continue;
        
David Byers's avatar
David Byers committed
1458
1459
1460
1461
1462
        item_index = find_aux_item_index(list_to_delete_from,
                                         items_to_delete->data[i]);
        if (item_index == -1)
            restart_kom("Call to delete_aux_item_list without call to check_delete_aux_item_list");
        item = &list_to_delete_from->items[item_index];
1463
        item->flags.deleted = 1;
David Byers's avatar
David Byers committed
1464
1465
1466
1467
        aux_item_call_delete_triggers(find_aux_item_definition(item),
                                      object_type,
                                      item_index,
                                      object_no,
David Byers's avatar
David Byers committed
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
                                      object,
                                      item);
        /* If we have linked items, undelete them too.
           It is safe to do this with a recursive call
           since we have marked this item as undeleted.
           But just to avoid pointless recursion, only
           do the recursive call if the corresponding
           item is marked as deleted */

        linked_item = find_linked_aux_item(item);
        if (linked_item && !linked_item->flags.deleted)
        {
            /* Set up the undelete list for the target object */
            item_to_delete = item->linked_item.target_item;
            linked_delete.length = 1;
            linked_delete.data = &item_to_delete;

            /* Find the item list to undelete from */
            linked_item_list = find_linked_aux_item_list(item);

            /* Set up the object and object_no parameters for undelete */
            switch (item->linked_item.target_type)
            {
            case CONF_OBJECT_TYPE:
                linked_object_no = item->linked_item.target_object.conf;
David Byers's avatar
David Byers committed
1493
                linked_object = (void*)cached_get_conf_stat(linked_object_no);
David Byers's avatar
David Byers committed
1494
1495
1496
                break;
            case TEXT_OBJECT_TYPE:
                linked_object_no = item->linked_item.target_object.text;
David Byers's avatar
David Byers committed
1497
                linked_object = (void*)cached_get_text_stat(linked_object_no);
David Byers's avatar
David Byers committed
1498
1499
1500
1501
1502
1503
                break;
            case INFO_OBJECT_TYPE:
                linked_object_no = 0;
                linked_object = NULL;
                break;
            default:
David Byers's avatar
David Byers committed
1504
1505
		kom_log("delete_aux_item_list(): bad target type\n");
                return;
David Byers's avatar
David Byers committed
1506
1507
            }

David Byers's avatar
David Byers committed
1508
1509
            /* We only get here if the link type is known */

David Byers's avatar
David Byers committed
1510
1511
1512