aux-items.c 32.3 KB
Newer Older
1
/*
2
 * $Id: aux-items.c,v 1.6 1998/11/09 22:31:09 ceder Exp $
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
 * Copyright (C) 1994, 1995, 1996  Lysator Academic Computer Association.
 *
 * 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. 
 */

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

#include "kom-types.h"
#include "manipulate.h"
#include "aux-items.h"
#include "kom-errno.h"
David Byers's avatar
David Byers committed
40
#include "kom-memory.h"
41
42
43
44
45
46
47
48
49
50
#include "async.h"
#include "com.h"
#include "connections.h"
#include "server/smalloc.h"
#include "cache.h"
#include "s-string.h"
#include "lyskomd.h"
#include "config.h"
#include "regex.h"
#include "log.h"
Per Cederqvist's avatar
Per Cederqvist committed
51
#include "services.h"
52
53
54
55
56
57
58
59
60

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

Aux_item_definition     *aux_item_definition_list = NULL;
unsigned long            num_aux_item_definitions = 0;
static Aux_item_definition compiled_aux_items[] =
{
};

61
62
63
64

void aux_item_trigger_mark_text(Aux_item_trigger_data *);
void aux_item_trigger_unmark_text(Aux_item_trigger_data *);

65
static Aux_item_trigger_mapping
66
67
68
69
70
71
72
aux_item_triggers [] =
{
    { "mark-text", aux_item_trigger_mark_text },
    { "unmark-text", aux_item_trigger_unmark_text },
    { NULL, NULL }
};

73
74
75
76
77
78
79
80
81
82
83
84
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 */      
    0,                      /* Author only */    
    0,                      /* Supervisor only */
    0,                      /* Unique */         
    0,                      /* Can't delete */   
    0,                      /* Inherit limit */  
    FALSE,                  /* Texts */
85
    0,
86
    FALSE,                  /* Confs */
87
    0,
88
89
90
91
    FALSE,                  /* Letterbox */
    FALSE,                  /* System */
    NULL,                   /* Validate */
    NULL,                   /* Cached regexp */
92
93
94
    0, NULL,
    0, NULL,
    0, NULL,
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
    NULL                    /* Next */
};

    


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

static Aux_item_definition simple_aux_item =
{
    "simple",               /* Name */           
    0,                      /* Tag */            
    { 0,0,0,0,0,0,0,0 },    /* Clear flags */    
    { 0,0,0,0,0,0,0,0 },    /* Set flags */      
    0,                      /* Author only */    
    0,                      /* Supervisor only */
    0,                      /* Unique */         
    0,                      /* Can't delete */   
    0,                      /* Inherit limit */  
    TRUE,                   /* Texts */
118
    0,
119
    TRUE,                   /* Confs */
120
    0,
121
122
123
    TRUE,                   /* Letterbox */
    TRUE,                   /* System */
    NULL,                   /* Validate regexp */       
124
125
126
127
128
    NULL,                   /* Cached regexp */
    0, NULL,                /* Add triggers */
    0, NULL,                /* Delete triggers */
    0, NULL,                /* Undelete triggers */
    NULL
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
};


/* Forward declarations */

static Bool
aux_item_check_unique(Aux_item *item,
                      Aux_item_definition *xdef,
                      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 *
aux_item_default_definition(Aux_item *item)
{
    unsigned long tmp;
    unsigned long extended;
    static Aux_item_definition def_s;

    /* 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;

    
    /* 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 */

    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;
}


204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
/*
 * aux_item_find_trigger
 */

Aux_item_trigger
aux_item_find_trigger(char *trigger_name)
{
    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;
}

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
/*
 * find_aux_item_definition
 *
 * Return the definition of ITEM or NULL if it does not
 * have a valid information.
 */

Aux_item_definition *
find_aux_item_definition(Aux_item *item)
{
    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
 * ======================================================================
 */
 
/*
 * 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)
    {
        restart_kom("out of memory adding aux-item definitionn");
    }
    *new_definition = *def;
    num_aux_item_definitions += 1;

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

Per Cederqvist's avatar
Per Cederqvist committed
275
276
static void
aux_item_definition_cache_regexp(Aux_item_definition *def)
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
{
    struct re_pattern_buffer   *pat_buf;
    const char                 *errmsg;

    re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
            
    def->cached_re_buf = smalloc(sizeof(*pat_buf));
    if (def->cached_re_buf == NULL)
    {
        log("Out of memory compiling aux-item regexp %lu (%s).\n",
            def->tag,
            def->name);
        return;
    }
    pat_buf = def->cached_re_buf;
    pat_buf->translate = DEFAULT_COLLAT_TAB;
    pat_buf->translate = NULL;
    pat_buf->fastmap = 0;
    pat_buf->allocated = 0;
    pat_buf->buffer = 0;

    if ((errmsg =
         re_compile_pattern(def->validate_regexp,
                            strlen(def->validate_regexp),
                            pat_buf))
        != NULL)
    {
        log("%s in validate regexp of aux-item definition %lu (%s).\n",
                errmsg,
                def->tag,
                def->name);
        if (def->cached_re_buf)
            sfree(def->cached_re_buf);
        def->cached_re_buf = NULL;
        return;
    }
}

void
initialize_aux_items(char *aux_def_file)
{
    unsigned long                i;
    Aux_item_definition         *def;

    /* 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]);
    }

    /* Read definitions from configuration file */

    parse_aux_item_definitions(aux_def_file);

    def = aux_item_definition_list;
    while (def != NULL)
    {
        if (def->validate_regexp != NULL)
        {
            aux_item_definition_cache_regexp(def);
        }
        def = def->next;
    }
}


346
347
348
/* TRIGGER THINGS */


Per Cederqvist's avatar
Per Cederqvist committed
349
350
351
352
353
354
static void
aux_item_call_add_triggers(Aux_item_definition *def,
			   short object_type,
			   unsigned long item_index,
			   unsigned long integer_argument,
			   void     * pointer_argument)
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
{
    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;

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

Per Cederqvist's avatar
Per Cederqvist committed
371
372
373
374
375
376
static void
aux_item_call_delete_triggers(Aux_item_definition *def,
			     short object_type,
			     unsigned long item_index,
			     unsigned long integer_argument,
			     void     * pointer_argument)
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
{
    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;

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

Per Cederqvist's avatar
Per Cederqvist committed
393
394
395
396
397
398
static void
aux_item_call_undelete_triggers(Aux_item_definition *def,
				short object_type,
				unsigned long item_index,
				unsigned long integer_argument,
				void     * pointer_argument)
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
{
    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;

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

/*
 * 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,
                      Pers_no creator)
{
    unsigned long i;

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

void prepare_aux_item(Aux_item *item,
                      Pers_no creator,
                      Aux_item_definition *def)
{
    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);
453
    AUX_ADJUST_FLAG(dont_garb);
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
    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;
}

/*
 * 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
 *     and supervisor-brelated flags. The only case when this is to
 *     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.
487
 * CREATING is true if we are checking while creating an object
488
489
490
491
492
493
494
495
496
 */

Bool
aux_item_add_perm(Aux_item *item,
                  Aux_item_definition *def,
                  Pers_no item_creator,
                  Pers_no object_creator,
                  Bool owner_check,
                  Aux_item_list *add_to_list,
497
498
499
500
                  unsigned long start_looking_at,
                  Bool creating,
                  short object_type
                  )
501
{
502
503
    short can_add_when = 0;
    
504
505
506
507
508
509
510
    def = def ? def : def = find_aux_item_definition(item);

    /* Can't create an item with no definition */
      
    if (def == NULL)
        return FALSE;

511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
    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))))
        {
            return FALSE;
        }
    }

527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
    /* Check the author_only flag, which really is author-or-supervisor
     * How do we handle newly created confs, where we want this to
     * ALWAYS succeed? FIXME +++
     */

    if (def->author_only &&
        owner_check &&
        object_creator != item_creator &&
        !is_strictly_supervisor(object_creator, NULL, item_creator, NULL) &&
        !(item_creator == ACTPERS && ENA(wheel, 8)))
    {
            return FALSE;
    }

    /* Check the supervisor_only flag
     * Check using is_strictly_supervisor.
     * How do we handle newly created confs, where we want this to
     * ALWAYS succeed? FIXME +++
     */

    if (def->supervisor_only &&
         owner_check &&
        !is_strictly_supervisor(object_creator, NULL, item_creator, NULL) &&
        !(item_creator == ACTPERS && ENA(wheel,8)))
    {
        return FALSE;
    }

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

    if (!aux_item_check_unique(item, def, add_to_list, start_looking_at))
        return FALSE;

    /* Check the contents */

    if (def->validate_regexp)
    {
        if (def->cached_re_buf == NULL)
            aux_item_definition_cache_regexp(def);

        if (def->cached_re_buf == NULL)
            return FALSE;

        switch ( re_search (def->cached_re_buf,
                            item->data.string, s_strlen(item->data),
                            0, s_strlen(item->data),
                            NULL) )
        {
        case -1:
            return FALSE;
        case -2:
            log("Internal error in regex matching aux-item data.");
            break;
        default:
            /* Matched */
            break;
        }
    }

    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
aux_item_check_unique(Aux_item *item,
                      Aux_item_definition *def,
                      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;

    def = def ? def : find_aux_item_definition(item);
    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,
                  Aux_item_list *parent,
                  unsigned long *counter,
641
642
643
644
645
                  Pers_no target_creator,
                  Bool creating,
                  short object_type,
                  unsigned long object_no,
                  void *object)
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
{
    int i;
    Aux_item item;
    Aux_item_definition *def;

    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)
            {
            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,
668
669
670
                                   0,
                                   creating,
                                   object_type
671
672
673
                                   ))
                continue;

David Byers's avatar
David Byers committed
674
            copy_aux_item(&item, &parent->items[i]);
675
676
677
678
679
            prepare_aux_item(&item, parent->items[i].creator, def);
            if (item.inherit_limit != 0)
                item.inherit_limit -= 1;
            
            ADD_AUX_ITEM(*target, item, *counter);
680
681
682
683
684
685

            aux_item_call_add_triggers(def,
                                       object_type,
                                       target->length - 1,
                                       object_no,
                                       object);
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
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
        }
    }
}

/*
 * 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
filter_aux_item_list(Aux_item_list *original,
                     Aux_item_list *result,
                     Pers_no        viewer,
                     Person        *viewer_p)
{
    Aux_item        *orig_aux;
    unsigned long    from, to;

    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 &&
             !is_supervisor(orig_aux->creator,NULL, viewer, viewer_p) &&
             !ENA(admin, 4) )
            continue;

        result->items[to] = *orig_aux;

        if (orig_aux->flags.hide_creator &&
             !is_supervisor(orig_aux->creator,NULL, viewer, viewer_p) &&
             !ENA(admin, 4) )
            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
check_delete_aux_item_list(Number_list *items_to_delete,
                           Aux_item_list *list_to_delete_from)
{
    unsigned long i;
    Aux_item *item;
    Aux_item_definition *def;

    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)
        {
            kom_errno = KOM_ILL_AUX;
            err_stat = i;
            return FAILURE;
        }


        /* Check all sorts of permissions */

        def = find_aux_item_definition(item);
        if ((def == NULL)                                           ||
            (def->may_not_delete)                                   ||
            (item->creator == 0 && !ENA(wheel, 8))                  ||
            (item->creator != ACTPERS &&
             !is_supervisor(item->creator, NULL, ACTPERS, NULL) &&
             !ENA(wheel,8)))
        {
            kom_errno = KOM_AUX_PERM;
            err_stat = i;
            return FAILURE;
        }


        /* 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.
 */
 
void
delete_aux_item_list(Number_list *items_to_delete,
800
801
802
803
                     Aux_item_list *list_to_delete_from,
                     short object_type,
                     unsigned long object_no,
                     void *object)
804
805
806
807
808
809
810
811
812
813
814
815
{
    unsigned long i;
    Aux_item *item;

    for (i = 0; i < items_to_delete->length; i++)
    {
        if (items_to_delete->data[i] == 0)
            continue;
        
        item = find_aux_item(list_to_delete_from,
                             items_to_delete->data[i]);
        item->flags.deleted = 1;
816
817
818
819
820
821
        aux_item_call_delete_triggers(
            find_aux_item_definition(item),
            object_type,
            items_to_delete->data[i],
            object_no,
            object);
822
823
824
825
826
    }
}

void
undelete_aux_item_list(Number_list *items_to_undelete,
827
828
829
830
                       Aux_item_list *list_to_undelete_from,
                       short object_type,
                       unsigned long object_no,
                       void *object)
831
832
833
834
835
836
837
838
839
840
841
842
{
    unsigned long i;
    Aux_item *item;
    
    for (i = 0; i < items_to_undelete->length; i++)
    {
        if (items_to_undelete->data[i] == 0)
            continue;
        
        item = find_aux_item(list_to_undelete_from,
                             items_to_undelete->data[i]);
        item->flags.deleted = 0;
843
844
845
846
847
        aux_item_call_delete_triggers(find_aux_item_definition(item),
                                      object_type,
                                      items_to_undelete->data[i],
                                      object_no,
                                      object);
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
    }
}



/*
 * find_aux_item
 *
 * Return a pointer to the item in LIST with aux_no AUX-NO
 */
 
Aux_item *
find_aux_item(Aux_item_list *list, unsigned long aux_no)
{
    unsigned long i;

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

    return NULL;
}


/* **********************************************************************
 * **********************************************************************
 *
 * The following calls are specific for various types of items. They
 * are here simply to collect all of them in the same place.
 *
 * The following functions are defined for each type
 *
 * X_check_add_aux_item_list(X *obj, Aux_item_list *list,
 *                      Pers_no item_creator)
 *
 * Return OK if CREATOR is allowed to add ITEM or LIST to OBJ.
 * DEF is a pointer to the definition of ITEM or NULL. You must call
 * prepare_aux_item_list before calling these.
 *
 * 
 * X_add_aux_item_list(X *obj, Aux_item_definition *list, Pers_no creator)
 *
 * Add ITEM or all the items in LIST to OBJ. CREATOR is the person
 * adding the items. The creator field of the items are set to
 * creator. This call does not check permissions first. You need
 * to call prepare_aux_item_list before calling these, and you
 * should use X_check_add_aux_item_list or X_check_add_aux_item
 * before calling these.
 *
 *
 */


Success
text_stat_check_add_aux_item_list(Text_stat *text_s,
                                  Aux_item_list *list,
906
907
                                  Pers_no item_creator,
                                  Bool creating)
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
{
    Aux_item *item;
    unsigned long i;
    Aux_item_definition *def;

    if (list == NULL)
        return OK;

    for (i = 0; i < list->length; i++)
    {
        item = &list->items[i];

        def = find_aux_item_definition(item);
        if (def == NULL)
        {
            kom_errno = KOM_ILL_AUX;
            err_stat = i;
            return FAILURE;
        }
        
928
929
930
        if (!aux_item_add_perm(item,
                               def,
                               item_creator,
931
932
                               text_s?text_s->author:item_creator,
                               TRUE,
933
934
935
936
                               text_s?&text_s->aux_item_list:NULL,
                               0,
                               creating,
                               TEXT_OBJECT_TYPE) ||
937
938
939
940
941
942
943
944
945
946
947
948
949
            !aux_item_check_unique(item, def, list, i + 1) ||
            !def->texts)
        {
            kom_errno = KOM_AUX_PERM;
            err_stat = i;
            return FAILURE;
        }
    }

    return OK;
}

void text_stat_add_aux_item_list(Text_stat *text_s,
950
                                 Text_no text_no,
951
952
953
954
955
956
957
958
959
960
961
962
                                 Aux_item_list *item_list,
                                 Pers_no item_creator)
{
    unsigned long i;

    if (item_list == NULL)
        return;

    text_s->aux_item_list.items = srealloc(text_s->aux_item_list.items,
                                           (text_s->aux_item_list.length +
                                            item_list->length) *
                                           sizeof(Aux_item));
963

964
965
966
967
968
969
    for (i = 0; i < item_list->length; i++)
    {
        text_s->highest_aux += 1;
        item_list->items[i].aux_no = text_s->highest_aux;
        item_list->items[i].creator = item_creator;
        item_list->items[i].sent_at = time(NULL);
David Byers's avatar
David Byers committed
970
971
972
        copy_aux_item(
            &text_s->aux_item_list.items[text_s->aux_item_list.length],
            &item_list->items[i]);
973
        text_s->aux_item_list.length += 1;
974
975
976
977
978
979
        aux_item_call_add_triggers(
            find_aux_item_definition(&item_list->items[i]),
            TEXT_OBJECT_TYPE,
            text_s->highest_aux,
            text_no,
            text_s);
980
981
982
983
984
985
986
987
988
989
990
    }
}


/* ================================================================== */


Success
conf_stat_check_add_aux_item_list(Conference    *conf,
                                  Conf_no        conf_no,
                                  Aux_item_list *list,
991
992
                                  Pers_no        creator,
                                  Bool           creating)
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
{
    unsigned long i;
    Aux_item *item;
    Aux_item_definition *def;

    if (list == NULL)
        return OK;
    
    for (i = 0; i < list->length; i++)
    {
        item = &list->items[i];
        def = find_aux_item_definition(item);
        if (def == NULL)
        {
            kom_errno = KOM_ILL_AUX;
            err_stat = i;
            return FAILURE;
        }

        /* If CONF is non-NULL it already exists. We consider conf to be
         * its own "object creator" since this means that author_only
         * will allow only the supervisor of the conference to set
         * the aux_item (the conference creator is irrelevant here, as
         * everywhere else.) The semantics of supervisor_only will
         * mimic author_only.
         */

        if (!aux_item_add_perm(item,
                               def,
                               creator,
                               conf_no,
                               TRUE,
                               &conf->aux_item_list,
1026
1027
1028
                               0,
                               creating,
                               CONF_OBJECT_TYPE) ||
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
            !aux_item_check_unique(item, def, list, i + 1) ||
            !(def->confs || (def->letterboxes && conf->type.letter_box)))
        {
            kom_errno = KOM_AUX_PERM;
            err_stat = i;
            return FAILURE;
        }
    }

    return OK;
}

void
conf_stat_add_aux_item_list(Conference    *conf,
                            Conf_no        conf_no,
                            Aux_item_list *item_list,
                            Pers_no        item_creator)
{
    unsigned long i;

    if (item_list == NULL)
        return;

    conf->aux_item_list.items = srealloc(conf->aux_item_list.items,
                                         (conf->aux_item_list.length +
                                          item_list->length) *
                                         sizeof(Aux_item));
    for (i = 0; i < item_list->length; i++)
    {
        conf->highest_aux += 1;
        item_list->items[i].aux_no = conf->highest_aux;
        item_list->items[i].creator = item_creator;
        item_list->items[i].sent_at = time(NULL);
David Byers's avatar
David Byers committed
1062
1063
        copy_aux_item(&conf->aux_item_list.items[conf->aux_item_list.length],
                      &item_list->items[i]);
1064
        conf->aux_item_list.length += 1;
1065
1066
1067
1068
1069
1070
        aux_item_call_add_triggers(
            find_aux_item_definition(&item_list->items[i]),
            CONF_OBJECT_TYPE,
            conf->highest_aux,
            conf_no,
            conf);
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
    }
}

Success system_check_add_aux_item_list(Info *info,
                                       Aux_item_list *list,
                                       Pers_no creator)
{
    unsigned long i;
    Aux_item *item;
    Aux_item_definition *def;

    if (list == NULL)
        return OK;
    
    for (i = 0; i < list->length; i++)
    {
        item = &list->items[i];
        def = find_aux_item_definition(item);
        if (def == NULL)
        {
            kom_errno = KOM_ILL_AUX;
            err_stat = i;
            return FAILURE;
        }

        if (!aux_item_add_perm(item,
                               def,
                               creator,
                               creator,
                               FALSE,
                               &info->aux_item_list,
1102
1103
1104
                               0,
                               FALSE,
                               OTHER_OBJECT_TYPE) ||
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
            !aux_item_check_unique(item, def, list, i + 1) ||
            !def->system)
        {
            kom_errno = KOM_AUX_PERM;
            err_stat = i;
            return FAILURE;
        }
    }

    return OK;
}


void
system_add_aux_item_list(Info    *info,
                         Aux_item_list *item_list,
                         Pers_no        item_creator)
{
    unsigned long i;

    if (item_list == NULL)
        return;

    info->aux_item_list.items = srealloc(info->aux_item_list.items,
                                         (info->aux_item_list.length +
                                          item_list->length) *
                                         sizeof(Aux_item));
    for (i = 0; i < item_list->length; i++)
    {
        info->highest_aux_no += 1;
        item_list->items[i].aux_no = info->highest_aux_no;
        item_list->items[i].creator = item_creator;
        item_list->items[i].sent_at = time(NULL);
David Byers's avatar
David Byers committed
1138
1139
        copy_aux_item(&info->aux_item_list.items[info->aux_item_list.length],
                      &item_list->items[i]);
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
        info->aux_item_list.length += 1;
    }
}

extern Success
query_predefined_aux_items(Number_list *result)
{
    Aux_item_definition *def;

    result->data = tmp_alloc(sizeof(unsigned long) * num_aux_item_definitions);
    if (result->data == NULL)
    {
        restart_kom("Out of memory in query_predefined_aux_items.\n");
    }

    result->length = 0;
    def = aux_item_definition_list;
    while (def != NULL)
    {
        if (def->tag != 0)
        {
1161
	    assert(result->length < num_aux_item_definitions);
1162
1163
1164
            result->data[result->length] = def->tag;
            result->length += 1;
        }
1165
	def = def->next;
1166
1167
1168
1169
    }

    return OK;
}
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182


void aux_item_trigger_mark_text(Aux_item_trigger_data *data)
{
    if (data->object_type != TEXT_OBJECT_TYPE)
        return;
}

void aux_item_trigger_unmark_text(Aux_item_trigger_data *data)
{
    if (data->object_type != TEXT_OBJECT_TYPE)
        return;
}