aux-items.c 59.9 KB
Newer Older
1
/*
2
 * $Id: aux-items.c,v 1.19 1999/06/24 12:24:48 ceder Exp $
3
 * Copyright (C) 1994-1999  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
74
static Aux_item_definition compiled_aux_items[] =
{
};

75

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

78
79
void aux_item_trigger_mark_text(Aux_item_trigger_data *);
void aux_item_trigger_unmark_text(Aux_item_trigger_data *);
David Byers's avatar
David Byers committed
80
void aux_item_trigger_mirror_faq(Aux_item_trigger_data *);
David Byers's avatar
David Byers committed
81
void aux_item_trigger_link_item(Aux_item_trigger_data *data);
David Byers's avatar
David Byers committed
82
83
84
85
86
87
88
89
90


/* Forward declarations of validators */

Bool aux_item_validate_existing_text(Aux_item_validation_data *data);



/* Symbol table for the triggers */
91

92
static Aux_item_trigger_mapping
93
94
95
96
aux_item_triggers [] =
{
    { "mark-text", aux_item_trigger_mark_text },
    { "unmark-text", aux_item_trigger_unmark_text },
David Byers's avatar
David Byers committed
97
    { "link-faq", aux_item_trigger_mirror_faq },
David Byers's avatar
David Byers committed
98
    { "link-item", aux_item_trigger_link_item },
99
100
101
    { NULL, NULL }
};

David Byers's avatar
David Byers committed
102
103
104
105
106
107
108
109
110
111
112
113
114

/* 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 */

115
116
117
118
119
120
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
121
    0,                      /* Disabled */
122
123
    0,                      /* Author only */    
    0,                      /* Supervisor only */
David Byers's avatar
David Byers committed
124
    0,                      /* System only */
125
126
127
128
    0,                      /* Unique */         
    0,                      /* Can't delete */   
    0,                      /* Inherit limit */  
    FALSE,                  /* Texts */
129
    0,
130
    FALSE,                  /* Confs */
131
    0,
132
133
    FALSE,                  /* Letterbox */
    FALSE,                  /* System */
David Byers's avatar
David Byers committed
134
135
    0,                      /* Number of validators */
    NULL,                   /* Validator list */
136
137
138
    0, NULL,
    0, NULL,
    0, NULL,
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
    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 */      
David Byers's avatar
David Byers committed
156
    0,                      /* Disabled */
157
158
    0,                      /* Author only */    
    0,                      /* Supervisor only */
David Byers's avatar
David Byers committed
159
    0,                      /* System only */
160
161
162
163
    0,                      /* Unique */         
    0,                      /* Can't delete */   
    0,                      /* Inherit limit */  
    TRUE,                   /* Texts */
164
    0,
165
    TRUE,                   /* Confs */
166
    0,
167
168
    TRUE,                   /* Letterbox */
    TRUE,                   /* System */
David Byers's avatar
David Byers committed
169
    0, NULL,                /* Validators */
170
171
172
173
    0, NULL,                /* Add triggers */
    0, NULL,                /* Delete triggers */
    0, NULL,                /* Undelete triggers */
    NULL
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
};


/* 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)
{
    /* 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 */

David Byers's avatar
David Byers committed
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
/*
  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;
246
247
248
}


249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
/*
 * 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;
}

David Byers's avatar
David Byers committed
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
Aux_item_validation_function
aux_item_find_validator(char *validator_name)
{
    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;
}


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
/*
 * 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
 * ======================================================================
 */
 
David Byers's avatar
David Byers committed
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411

/* 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
aux_item_call_add_triggers(Aux_item_definition *def,
			   Object_type object_type,
			   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
aux_item_call_delete_triggers(Aux_item_definition *def,
                              Object_type object_type,
                              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
aux_item_call_undelete_triggers(Aux_item_definition *def,
				Object_type object_type,
				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);
    }
}



412
413
414
415
416
417
418
419
420
421
422
423
424
425
/*
 * 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
426
        restart_kom("out of memory adding aux-item definition");
427
428
429
430
431
432
433
434
    }
    *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
435
436
437
438
439
440
441


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

Per Cederqvist's avatar
Per Cederqvist committed
442
static void
David Byers's avatar
David Byers committed
443
444
aux_item_definition_cache_regexp(Aux_item_definition *def,
                                 unsigned long ix)
445
446
447
448
449
450
{
    struct re_pattern_buffer   *pat_buf;
    const char                 *errmsg;

    re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
            
David Byers's avatar
David Byers committed
451
452
    def->validators[ix].v.re.cached_re_buf = smalloc(sizeof(*pat_buf));
    if (def->validators[ix].v.re.cached_re_buf == NULL)
453
    {
David Byers's avatar
David Byers committed
454
455
456
        kom_log("Out of memory compiling aux-item regexp %lu (%s).\n",
                def->tag,
                def->name);
457
458
        return;
    }
David Byers's avatar
David Byers committed
459
    pat_buf = def->validators[ix].v.re.cached_re_buf;
460
461
462
463
464
465
466
    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
467
468
         re_compile_pattern(def->validators[ix].v.re.regexp,
                            strlen(def->validators[ix].v.re.regexp),
469
470
471
                            pat_buf))
        != NULL)
    {
David Byers's avatar
David Byers committed
472
        kom_log("%s in validate regexp of aux-item definition %lu (%s).\n",
473
474
475
                errmsg,
                def->tag,
                def->name);
David Byers's avatar
David Byers committed
476
477
        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
478
479
        if (def->validators[ix].v.re.regexp)
            string_free(def->validators[ix].v.re.regexp);
David Byers's avatar
David Byers committed
480
        def->validators[ix].v.re.cached_re_buf = NULL;
David Byers's avatar
David Byers committed
481
        def->validators[ix].v.re.regexp = NULL;
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
        return;
    }
}

void
initialize_aux_items(char *aux_def_file)
{
    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]);
    }

    /* Read definitions from configuration file */

    parse_aux_item_definitions(aux_def_file);
David Byers's avatar
David Byers committed
503
}
504

David Byers's avatar
David Byers committed
505
506
507
508
509
510
void
free_aux_item_definitions(void)
{
    unsigned long i;
    Aux_item_definition *def;
    Aux_item_definition *tmp;
David Byers's avatar
David Byers committed
511

David Byers's avatar
David Byers committed
512
    def = aux_item_definition_list;
513
514
    while (def != NULL)
    {
David Byers's avatar
David Byers committed
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
        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;
553
    }
David Byers's avatar
David Byers committed
554
555

    aux_item_definition_list = NULL;
556
557
558
}


559

David Byers's avatar
David Byers committed
560
561
long
find_aux_item_index(Aux_item_list *list, unsigned long aux_no)
562
563
{
    unsigned long i;
David Byers's avatar
David Byers committed
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581

    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;
582
    
David Byers's avatar
David Byers committed
583
584
585
586
    switch (item->linked_item.target_type)
    {
    case NO_OBJECT_TYPE:
        return NULL;
587

David Byers's avatar
David Byers committed
588
589
590
591
592
593
594
595
596
597
598
599
600
601
    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;

    case PERS_OBJECT_TYPE:
    default:
        /* No lists in these items */
602
603
        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
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
        return NULL;
    }
}

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

static Aux_item *
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)
631
    {
David Byers's avatar
David Byers committed
632
633
634
635
636
637
638
639
640
641
642
643
644
645
    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:
    case PERS_OBJECT_TYPE:
    default:
        /* Need no commit for these objects */
646
647
648
    }
}

David Byers's avatar
David Byers committed
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664



/*
 * 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
665
static void
David Byers's avatar
David Byers committed
666
667
668
669
670
671
672
673
674
aux_item_link_items(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 */

                    Object_type     dst_type,  /* Destination obj type */
                    unsigned long   dst_no,    /* Destination obj pointer */
                    void           *dst_ptr,   /* Destination pointer */
                    Aux_item       *dst_item_data)
675
{
David Byers's avatar
David Byers committed
676
    Aux_item_list       item_list;
677

David Byers's avatar
David Byers committed
678
679
680
    /* Get a pointer to the destination object */

    if (dst_ptr == NULL)
681
    {
David Byers's avatar
David Byers committed
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
        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;
713
    }
David Byers's avatar
David Byers committed
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


    /* 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
746
    prepare_aux_item_list(&item_list, src_item->creator);
David Byers's avatar
David Byers committed
747
748
749
750
751
752
753
754
755
756
757
758
759


    /*
     * 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
760
761
                                    (Text_no)dst_no, &item_list,
                                    src_item->creator);
David Byers's avatar
David Byers committed
762
763
764
765
        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
766
767
                                    (Conf_no)dst_no, &item_list,
                                    src_item->creator);
David Byers's avatar
David Byers committed
768
769
770
771
        mark_conference_as_changed((Conf_no)dst_no);
        break;

    case INFO_OBJECT_TYPE:
David Byers's avatar
Server:    
David Byers committed
772
773
        system_add_aux_item_list((Info *)dst_ptr, &item_list,
                                 src_item->creator);
David Byers's avatar
David Byers committed
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
        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
     */

    src_item = NULL;

    /*
     * Mark the source object as changed
     */

    mark_linked_object_as_changed(dst_item_data);
794
795
}

David Byers's avatar
David Byers committed
796
797
798



Per Cederqvist's avatar
Per Cederqvist committed
799
static void
David Byers's avatar
David Byers committed
800
801
802
803
804
805
806
aux_item_list_add_items(Aux_item_list *add_to_list,
                        Aux_item_list *items_to_add,
                        Object_type    object_type,
                        unsigned long  object_no,
                        void          *object_ptr,
                        unsigned long *highest_ptr,
                        Pers_no        item_creator)
807
{
David Byers's avatar
David Byers committed
808
809
810
    unsigned long       i;
    unsigned long       highest_local;
    unsigned long       start_index;
811

David Byers's avatar
David Byers committed
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
    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++)
835
    {
David Byers's avatar
David Byers committed
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
        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]);
857
858
    }
}
859

David Byers's avatar
David Byers committed
860
861
862



863
864
865
866
867
868
869
870
871
872
873
874
/*
 * 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,
875
                      Pers_no creator)
876
877
878
879
880
881
882
883
{
    unsigned long i;

    if (list == NULL)
        return;
    
    for (i = 0; i < list->length; i++)
    {
884
        prepare_aux_item(&list->items[i], creator, NULL);
885
886
887
888
889
    }
}

void prepare_aux_item(Aux_item *item,
                      Pers_no creator,
890
                      Aux_item_definition *def)
891
892
893
894
895
896
897
898
899
900
{
    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);
901
    AUX_ADJUST_FLAG(dont_garb);
902
903
904
905
906
907
908
909
910
911
912
913
    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;
914
    item->sent_at = current_time;
David Byers's avatar
David Byers committed
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
}



static Bool aux_item_validate(Aux_item_validation_data validation_data)
{
    unsigned long               i;
    Aux_item_definition        *def;

    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)
            {
962
963
                kom_log("Failed to cache regexp validator for \"%s\". "
			"Rejecting all such items\n",
David Byers's avatar
David Byers committed
964
                        def->name);
David Byers's avatar
David Byers committed
965
966
                sfree(def->validators[i].v.re.regexp);
                def->validators[i].v.re.regexp = NULL;
David Byers's avatar
David Byers committed
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
                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) */
989
                kom_log("Internal error in regex matching aux-item data.\n");
David Byers's avatar
David Byers committed
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
                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:
1012
            kom_log("BUG: unknown aux_item validator type\n");
David Byers's avatar
David Byers committed
1013

David Byers's avatar
David Byers committed
1014
1015
1016
1017
1018
1019
1020
1021
1022
        }
    }

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

    return TRUE;

1023
1024
}

David Byers's avatar
David Byers committed
1025

1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
/*
 * 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.
1045
 * CREATING is true if we are checking while creating an object
1046
1047
1048
1049
1050
1051
1052
1053
1054
 */

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,
1055
1056
                  unsigned long start_looking_at,
                  Bool creating,
David Byers's avatar
David Byers committed
1057
                  Object_type object_type
1058
                  )
1059
{
1060
1061
    short can_add_when = 0;
    
David Byers's avatar
David Byers committed
1062
1063
    kom_errno = KOM_NO_ERROR;

1064
1065
1066
1067
1068
    def = def ? def : def = find_aux_item_definition(item);

    /* Can't create an item with no definition */
      
    if (def == NULL)
David Byers's avatar
David Byers committed
1069
1070
    {
        kom_errno = KOM_ILL_AUX;
1071
        return FALSE;
David Byers's avatar
David Byers committed
1072
    }
1073

David Byers's avatar
David Byers committed
1074
1075
1076
1077
1078
1079
    if (def->disabled)
    {
        kom_errno = KOM_ILL_AUX;
        return FALSE;
    }

1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
    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
1092
            kom_errno = KOM_AUX_PERM;
1093
1094
1095
1096
            return FALSE;
        }
    }

David Byers's avatar
David Byers committed
1097
1098
1099
1100
1101
1102
1103
    if (def->system_only &&
        owner_check)
    {
        kom_errno = KOM_AUX_PERM;
        return FALSE;
    }

1104
1105
1106
1107
    if (def->author_only &&
        owner_check &&
        object_creator != item_creator &&
        !is_strictly_supervisor(object_creator, NULL, item_creator, NULL) &&
David Byers's avatar
Server    
David Byers committed
1108
        !(item_creator == ACTPERS && ENA(wheel, 8))) /* NOT OK! */
1109
    {
David Byers's avatar
David Byers committed
1110
1111
        kom_errno = KOM_AUX_PERM;
        return FALSE;
1112
1113
1114
1115
1116
    }

    if (def->supervisor_only &&
         owner_check &&
        !is_strictly_supervisor(object_creator, NULL, item_creator, NULL) &&
David Byers's avatar
Server    
David Byers committed
1117
        !(item_creator == ACTPERS && ENA(wheel,8))) /* NOT OK! */
1118
    {
David Byers's avatar
David Byers committed
1119
        kom_errno = KOM_AUX_PERM;
1120
1121
1122
1123
1124
1125
        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
1126
1127
    {
        kom_errno = KOM_AUX_PERM;
1128
        return FALSE;
David Byers's avatar
David Byers committed
1129
    }
1130
1131
1132

    /* Check the contents */

David Byers's avatar
David Byers committed
1133
    if (def->num_validators > 0)
1134
    {
David Byers's avatar
David Byers committed
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
        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
1148
1149
        {
            kom_errno = KOM_ILL_AUX;
1150
            return FALSE;
David Byers's avatar
David Byers committed
1151
        }
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
    }

    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,
1209
1210
                  Pers_no target_creator,
                  Bool creating,
David Byers's avatar
David Byers committed
1211
                  Object_type object_type,
1212
1213
                  unsigned long object_no,
                  void *object)
1214
1215
1216
1217
1218
{
    int i;
    Aux_item item;
    Aux_item_definition *def;

David Byers's avatar
David Byers committed
1219
    /* Inheriting linked items is strange, but works. */
David Byers's avatar
David Byers committed
1220

1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
    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,
1238
1239
1240
                                   0,
                                   creating,
                                   object_type
1241
1242
1243
                                   ))
                continue;

David Byers's avatar
David Byers committed
1244
            copy_aux_item(&item, &parent->items[i]);
David Byers's avatar
David Byers committed
1245
            init_aux_item_link(&item.linked_item);
1246
            prepare_aux_item(&item, parent->items[i].creator, def);
1247
1248
1249
            if (item.inherit_limit != 0)
                item.inherit_limit -= 1;
            
David Byers's avatar
David Byers committed
1250
1251
1252
1253
1254
1255
            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;
1256
1257
1258
1259
1260

            aux_item_call_add_triggers(def,
                                       object_type,
                                       target->length - 1,
                                       object_no,
David Byers's avatar
David Byers committed
1261
1262
                                       object,
                                       &target->items[target->length]);
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
        }
    }
}

/*
 * 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,
David Byers's avatar
Server    
David Byers committed
1279
                     Connection    *viewer_conn)
1280
1281
1282
{
    Aux_item        *orig_aux;
    unsigned long    from, to;
David Byers's avatar
Server    
David Byers committed
1283
1284
    /*    Pers_no          viewer;
          Person        *viewer_p;*/
1285
1286
1287
1288
1289
1290
1291
1292
1293

    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 &&
David Byers's avatar
Server    
David Byers committed
1294
1295
1296
             !is_supervisor(orig_aux->creator, NULL,
                            viewer_conn->pers_no, viewer_conn->person) &&
             !ENA_C(viewer_conn, admin, 4))
1297
1298
1299
1300
1301
            continue;

        result->items[to] = *orig_aux;

        if (orig_aux->flags.hide_creator &&
David Byers's avatar
Server    
David Byers committed
1302
1303
1304
             !is_supervisor(orig_aux->creator, NULL,
                            viewer_conn->pers_no, viewer_conn->person) &&
             !ENA_C(viewer_conn, admin, 4))
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
            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)
{
David Byers's avatar
David Byers committed
1323
    long i;
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
    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)
        {
David Byers's avatar
David Byers committed
1338
            kom_errno = KOM_AUX_PERM;
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
            err_stat = i;
            return FAILURE;
        }


        /* Check all sorts of permissions */

        def = find_aux_item_definition(item);
        if ((def == NULL)                                           ||
            (def->may_not_delete)                                   ||
David Byers's avatar
Server    
David Byers committed
1349
1350
1351
1352
            (item->creator == 0 && !ENA(wheel, 8))                  || /* NOT OK! */
            (item->creator != ACTPERS && /* NOT OK! */
             !is_supervisor(item->creator, NULL, ACTPERS, NULL) && /* NOT OK! */
             !ENA(wheel,8)))    /* NOT OK! */
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
        {
            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.
David Byers's avatar
David Byers committed
1374
1375
 *
 * Call commit_aux_item_list to make the changes permanent
1376
1377
1378
1379
 */
 
void
delete_aux_item_list(Number_list *items_to_delete,
1380
                     Aux_item_list *list_to_delete_from,
David Byers's avatar
David Byers committed
1381
                     Object_type object_type,
1382
1383
                     unsigned long object_no,
                     void *object)
1384
{
David Byers's avatar
David Byers committed
1385
    long i;
1386
    Aux_item *item;
David Byers's avatar
David Byers committed
1387
    Aux_item *linked_item;
David Byers's avatar
David Byers committed
1388
    long item_index;
David Byers's avatar
David Byers committed
1389
1390
1391
1392
1393
    long            item_to_delete;
    unsigned long   linked_object_no;
    Number_list     linked_delete;
    Aux_item_list   *linked_item_list;
    void            *linked_object;
1394
1395
1396
1397
1398
1399

    for (i = 0; i < items_to_delete->length; i++)
    {
        if (items_to_delete->data[i] == 0)
            continue;
        
David Byers's avatar
David Byers committed
1400
1401
1402
1403
1404
        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];
1405
        item->flags.deleted = 1;
David Byers's avatar
David Byers committed
1406
1407
1408
1409
        aux_item_call_delete_triggers(find_aux_item_definition(item),
                                      object_type,
                                      item_index,
                                      object_no,
David Byers's avatar
David Byers committed
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
                                      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
1435
                linked_object = (void*)cached_get_conf_stat(linked_object_no);
David Byers's avatar
David Byers committed
1436
1437
1438
                break;
            case TEXT_OBJECT_TYPE:
                linked_object_no = item->linked_item.target_object.text;
David Byers's avatar
David Byers committed
1439
                linked_object = (void*)cached_get_text_stat(linked_object_no);
David Byers's avatar
David Byers committed
1440
1441
1442
1443
1444
1445
                break;
            case INFO_OBJECT_TYPE:
                linked_object_no = 0;
                linked_object = NULL;
                break;
            default:
David Byers's avatar
David Byers committed
1446
1447
		kom_log("delete_aux_item_list(): bad target type\n");
                return;
David Byers's avatar
David Byers committed
1448
1449
            }

David Byers's avatar
David Byers committed
1450
1451
            /* We only get here if the link type is known */

David Byers's avatar
David Byers committed
1452
1453
1454
1455
1456
1457
            delete_aux_item_list(&linked_delete,
                                 linked_item_list,
                                 item->linked_item.target_type,
                                 linked_object_no,
                                 linked_object);
        }
1458
1459
1460
    }
}

David Byers's avatar
David Byers committed
1461
1462
/*
 * Reverse tentative deletions from an aux-item-list
1463
1464
 * Only deletions that have not been made permanent by a call to
 * commit_aux_item_list can be undeleted.
David Byers's avatar
David Byers committed
1465
1466
 */

1467
1468
void
undelete_aux_item_list(Number_list *items_to_undelete,
1469
                       Aux_item_list *list_to_undelete_from,
David Byers's avatar
David Byers committed
1470
                       Object_type object_type,
1471
1472
                       unsigned long object_no,
                       void *object)
1473
{
David Byers's avatar
David Byers committed
1474
1475
    Kom_err         saved_kom_errno;
    unsigned long   saved_err_stat;
David Byers's avatar
David Byers committed
1476
1477
1478
1479
1480
1481
1482
1483
1484
    long            i;
    Aux_item       *item;
    Aux_item       *linked_item;
    Aux_item_list  *linked_item_list;
    long            item_index;
    long            item_to_undelete;
    unsigned long   linked_object_no;
    Number_list     linked_undelete;
    void           *linked_object;
1485
    
David Byers's avatar
David Byers committed
1486
1487
1488
    saved_kom_errno = kom_errno;
    saved_err_stat = err_stat;

1489
1490
1491
1492
1493
    for (i = 0; i < items_to_undelete->length; i++)
    {
        if (items_to_undelete->data[i] == 0)
            continue;
        
David Byers's avatar
David Byers committed
1494
1495
1496
1497
1498
        item_index = find_aux_item_index(list_to_undelete_from,
                                         items_to_undelete->data[i]);
        if (item_index == -1)
            restart_kom("Call to undelete_aux_item_list without call to check_delete_aux_item_list");
        item = &list_to_undelete_from->items[item_index];
1499
        item->flags.deleted = 0;
David Byers's avatar
David Byers committed
1500
1501
1502
1503
        aux_item_call_undelete_triggers(find_aux_item_definition(item),
                                        object_type,
                                        item_index,
                                        object_no,
David Byers's avatar
David Byers committed
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
                                        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_undelete = item->linked_item.target_item;
            linked_undelete.length = 1;
            linked_undelete.data = &item_to_undelete;

            /* 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
1530
                linked_object = (void*)cached_get_conf_stat(linked_object_no);
David Byers's avatar
David Byers committed
1531
1532
1533
                break;
            case TEXT_OBJECT_TYPE:
                linked_object_no = item->linked_item.target_object.text;
David Byers's avatar
David Byers committed
1534
                linked_object = (void*)cached_get_text_stat(linked_object_no);
David Byers's avatar
David Byers committed
1535
1536
1537
1538
1539
1540
                break;
            case INFO_OBJECT_TYPE:
                linked_object_no = 0;
                linked_object = NULL;
                break;
            default:
David Byers's avatar
David Byers committed
1541
1542
1543
1544
		kom_log("undelete_aux_item_list(): bad link type\n");
                kom_errno = saved_kom_errno;
                err_stat = saved_err_stat;
                return;
David Byers's avatar
David Byers committed
1545
1546
            }

David Byers's avatar
David Byers committed
1547
1548
            /* We only get here if the link type is known */

David Byers's avatar
David Byers committed
1549
1550
1551
1552
1553
1554
            undelete_aux_item_list(&linked_undelete,
                                   linked_item_list,
                                   item->linked_item.target_type,
                                   linked_object_no,
                                   linked_object);
        }
1555
    }
David Byers's avatar
David Byers committed
1556
1557
1558

    kom_errno = saved_kom_errno;
    err_stat = saved_err_stat;
1559
1560
}

David Byers's avatar
David Byers committed
1561

David Byers's avatar
David Byers committed
1562
1563
1564
1565
1566
1567
1568
/*
 * Commit deletions in the aux-item-list. After this has been called
 * undelete_aux_item_list has no effect. The memory associated with
 * the deleted items is not released until the entire list is
 * released from memory or reallocated.
 */

David Byers's avatar
David Byers committed
1569
1570
static void
commit_aux_item_list_internal(Aux_item_list *list_to_commit, Bool shallow)
David Byers's avatar
David Byers committed
1571
{
David Byers's avatar
David Byers committed
1572
1573
1574
1575
1576
    long             i;             /* Loop index */
    long             target;        /* Where to move items when compacting */
    Aux_item        *linked_item;
    Aux_item_list   *aux_item_list;

David Byers's avatar
David Byers committed
1577
1578
1579
1580
1581
1582

    target = 0;
    for (i = 0; i < list_to_commit->length; i++)
    {
        if (list_to_commit->items[i].flags.deleted)
        {
David Byers's avatar
David Byers committed
1583
1584
            /* Clear the data in the aux item */
            
David Byers's avatar
David Byers committed
1585
            s_clear(&list_to_commit->items[i].data);
David Byers's avatar
David Byers committed
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601

            /* If the item we're looking at is linked
               to another item, we have to commit the list
               of the object the link points to. To avoid
               infinite recursion only do this if the
               linked item is marked as deleted */

            linked_item = find_linked_aux_item(&list_to_commit->items[i]);
            if (linked_item                     &&
                linked_item->flags.deleted      &&
                !shallow)
            {
                aux_item_list = find_linked_aux_item_list(&list_to_commit->items[i]);
                commit_aux_item_list_internal(aux_item_list, TRUE);
                mark_linked_object_as_changed(&list_to_commit->items[i]);
            }
David Byers's avatar
David Byers committed
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
            continue;
        }
        else if (target != i)
        {
            /* If we have deleted an item earlier, compact the list */
            list_to_commit->items[target] = list_to_commit->items[i];
            list_to_commit->items[i].data = EMPTY_STRING;
            target += 1;
        }
        else
        {
            /* If we have not deleted an item, bump target up one */
            target += 1;
        }
    }

    /*
      Zero out all the unused slots in the array. This is not
      strictly necessary but looks better and makes finding
      bugs a bit easier
    */

    memset(&list_to_commit->items[target], 0,
           (list_to_commit->length - target) * sizeof(Aux_item));

    /* Target points to one index more than the last non-deleted item */
    list_to_commit->length = target;
}

1631

David Byers's avatar
David Byers committed
1632
1633
1634
1635
1636
1637
1638
1639
void commit_aux_item_list(Aux_item_list *list_to_commit)
{
    commit_aux_item_list_internal(list_to_commit, FALSE);
}




1640
1641
1642
1643
1644
1645
1646
1647
1648

/*
 * 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)
David Byers's avatar
David Byers committed
1649
1650
1651
1652
1653
1654
1655
1656
1657
{
    long item_index = find_aux_item_index(list, aux_no);

    if (item_index == -1)
        return NULL;

    return &list->items[item_index];
}

1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691


/* **********************************************************************
 * **********************************************************************
 *
 * 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,
1692
1693
                                  Pers_no item_creator,
                                  Bool creating)
1694
1695
1696
1697
1698
1699
1700
1701
{
    Aux_item *item;
    unsigned long i;
    Aux_item_definition *def;

    if (list == NULL)
        return OK;

David Byers's avatar
David Byers committed
1702
1703
    kom_errno = KOM_NO_ERROR;

1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
    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;
        }
        
1716
1717
1718
        if (!aux_item_add_perm(item,
                               def,
                               item_creator,
1719
1720
                               text_s?text_s->author:item_creator,
                               TRUE,