Codebase list cyrus-imapd / debian/3.0.13-2_bpo10+1 imap / autocreate.c
debian/3.0.13-2_bpo10+1

Tree @debian/3.0.13-2_bpo10+1 (Download .tar.gz)

autocreate.c @debian/3.0.13-2_bpo10+1raw · history · blame

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
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
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
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
/* autocreate.c -- Mailbox list manipulation routines
 *
 * Copyright (c) 1994-2012 Carnegie Mellon University.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The name "Carnegie Mellon University" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For permission or any legal
 *    details, please contact
 *      Carnegie Mellon University
 *      Center for Technology Transfer and Enterprise Creation
 *      4615 Forbes Avenue
 *      Suite 302
 *      Pittsburgh, PA  15213
 *      (412) 268-7393, fax: (412) 268-7395
 *      innovation@andrew.cmu.edu
 *
 * 4. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by Computing Services
 *     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
 *
 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <config.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <fcntl.h>
#include <time.h>
#include <syslog.h>

#include "global.h"
#include "annotate.h"
#include "util.h"
#include "user.h"
#include "xmalloc.h"
#include "mailbox.h"
#include "mboxlist.h"

/* generated headers are not necessarily in current directory */
#include "imap/imap_err.h"

#ifdef USE_SIEVE

#include "sieve/sieve_interface.h"
#include "sieve/script.h"

#define TIMSIEVE_FAIL   -1
#define TIMSIEVE_OK     0
#define MAX_FILENAME    1024

/*
 * Find the name of the sieve script
 * given the source script and compiled script names
 */
static const char *get_script_name(const char *filename)
{
    const char *p;

    p = strrchr(filename, '/');
    if (p == NULL)
        return filename;
    else
        return p + 1;
}

static int autocreate_sieve(const char *userid, const char *source_script)
{
    /* XXX - this is really ugly, but too much work to tidy up right now -- Bron */
    sieve_script_t *s = NULL;
    bytecode_info_t *bc = NULL;
    char *err = NULL;
    FILE *in_stream, *out_fp;
    int out_fd, in_fd, r, k;
    int do_compile = 0;
    const char *compiled_source_script = NULL;
    const char *sievename = get_script_name(source_script);
    const char *sieve_script_dir = NULL;
    char sieve_script_name[MAX_FILENAME];
    char sieve_bcscript_name[MAX_FILENAME];
    char sieve_default[MAX_FILENAME];
    char sieve_tmpname[MAX_FILENAME];
    char sieve_bctmpname[MAX_FILENAME];
    char sieve_bclink_name[MAX_FILENAME];
    char buf[4096];
    mode_t oldmask;
    struct stat statbuf;

    /* We don't support using the homedirectory, like timsieved */
    if (config_getswitch(IMAPOPT_SIEVEUSEHOMEDIR)) {
        syslog(LOG_WARNING,"autocreate_sieve: autocreate_sieve does not work with sieveusehomedir option in imapd.conf");
        return 1;
    }

    /* Check if sievedir is defined in imapd.conf */
    if(!config_getstring(IMAPOPT_SIEVEDIR)) {
        syslog(LOG_WARNING, "autocreate_sieve: sievedir option is not defined. Check imapd.conf");
        return 1;
    }

    /* Check if autocreate_sieve_compiledscript is defined in imapd.conf */
    if(!(compiled_source_script = config_getstring(IMAPOPT_AUTOCREATE_SIEVE_SCRIPT_COMPILED))) {
        syslog(LOG_WARNING, "autocreate_sieve: autocreate_sieve_compiledscript option is not defined. Compiling it");
        do_compile = 1;
    }

    if (!(sieve_script_dir = user_sieve_path(userid))) {
        syslog(LOG_WARNING, "autocreate_sieve: unable to determine sieve directory for user %s", userid);
        return 1;
    }

    if(snprintf(sieve_tmpname, MAX_FILENAME, "%s/%s.script.NEW",sieve_script_dir, sievename) >= MAX_FILENAME) {
        syslog(LOG_WARNING, "autocreate_sieve: Invalid sieve path %s, %s, %s", sieve_script_dir, sievename, userid);
        return 1;
    }
    if(snprintf(sieve_bctmpname, MAX_FILENAME, "%s/%s.bc.NEW",sieve_script_dir, sievename) >= MAX_FILENAME) {
        syslog(LOG_WARNING, "autocreate_sieve: Invalid sieve path %s, %s, %s", sieve_script_dir, sievename, userid);
        return 1;
    }
    if(snprintf(sieve_script_name, MAX_FILENAME, "%s/%s.script",sieve_script_dir, sievename) >= MAX_FILENAME) {
        syslog(LOG_WARNING, "autocreate_sieve: Invalid sieve path %s, %s, %s", sieve_script_dir, sievename, userid);
        return 1;
    }
    if(snprintf(sieve_bcscript_name, MAX_FILENAME, "%s/%s.bc",sieve_script_dir, sievename) >= MAX_FILENAME) {
        syslog(LOG_WARNING, "autocreate_sieve: Invalid sieve path %s, %s, %s", sieve_script_dir, sievename, userid);
        return 1;
    }
    if(snprintf(sieve_default, MAX_FILENAME, "%s/%s",sieve_script_dir,"defaultbc") >= MAX_FILENAME) {
        syslog(LOG_WARNING, "autocreate_sieve: Invalid sieve path %s, %s, %s", sieve_script_dir, sievename, userid);
        return 1;
    }
    /* XXX no directory? umm */
    if(snprintf(sieve_bclink_name, MAX_FILENAME, "%s.bc", sievename) >= MAX_FILENAME) {
        syslog(LOG_WARNING, "autocreate_sieve: Invalid sieve path %s, %s, %s", sieve_script_dir, sievename, userid);
        return 1;
    }

    /* Check if a default sieve filter alrady exists */
    if(!stat(sieve_default,&statbuf)) {
        syslog(LOG_WARNING,"autocreate_sieve: Default sieve script already exists");
        return 1;
    }

    /* Open the source script. if there is a problem with that exit */
    in_stream = fopen(source_script, "r");
    if(!in_stream) {
        syslog(LOG_WARNING,"autocreate_sieve: Unable to open sieve script %s. Check permissions",source_script);
        return 1;
    }

    /*
     * At this point we start the modifications of the filesystem
     */

    /* Create the directory where the sieve scripts will reside */
    r = cyrus_mkdir(sieve_bctmpname, 0755);
    if(r == -1) {
        /* If this fails we just leave */
        fclose(in_stream);
        return 1;
    }

    /*
     * We open the file that will be used as the bc file. If this file exists, overwrite it
     * since something bad has happened. We open the file here so that this error checking is
     * done before we try to open the rest of the files to start copying etc.
     */
    out_fd = open(sieve_bctmpname, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
    if(out_fd < 0) {
        if(errno == EEXIST) {
            syslog(LOG_WARNING,"autocreate_sieve: File %s already exists. Probably left over. Ignoring",sieve_bctmpname);
        } else if (errno == EACCES) {
            syslog(LOG_WARNING,"autocreate_sieve: No access to create file %s. Check permissions",sieve_bctmpname);
            fclose(in_stream);
            return 1;
        } else {
            syslog(LOG_WARNING,"autocreate_sieve: Unable to create %s: %m",sieve_bctmpname);
            fclose(in_stream);
            return 1;
        }
    }

    if(!do_compile && compiled_source_script && (in_fd = open(compiled_source_script, O_RDONLY)) != -1) {
        while((r = read(in_fd, buf, sizeof(buf))) > 0) {
            if((k=write(out_fd, buf,r)) < 0) {
                syslog(LOG_WARNING, "autocreate_sieve: Error writing to file %s: %m", sieve_bctmpname);
                close(out_fd);
                close(in_fd);
                fclose(in_stream);
                unlink(sieve_bctmpname);
                return 1;
           }
        }

        if(r == 0) { /* EOF */
            xclose(out_fd);
            xclose(in_fd);
        } else if (r < 0) {
            syslog(LOG_WARNING, "autocreate_sieve: Error reading compiled script file %s: %m. Will try to compile it",
                           compiled_source_script);
            xclose(in_fd);
            do_compile = 1;
            if(lseek(out_fd, 0, SEEK_SET)) {
                syslog(LOG_WARNING, "autocreate_sieve: Major IO problem (lseek: %m). Aborting");
                xclose(out_fd);
                return 1;
            }
        }
        xclose(in_fd);
    } else {
        if(compiled_source_script)
              syslog(LOG_WARNING,"autocreate_sieve: Problem opening compiled script file: %s. Compiling it", compiled_source_script);
        do_compile = 1;
    }


    /* Because we failed to open a precompiled bc sieve script, we compile one */
    if(do_compile) {
       if(sieve_script_parse_only(in_stream,&err, &s) != SIEVE_OK) {
            if(err && *err) {
               syslog(LOG_WARNING,"autocreate_sieve: Error while parsing script %s.",err);
               free(err);
            } else
                syslog(LOG_WARNING,"autocreate_sieve: Error while parsing script");

            unlink(sieve_bctmpname);
            fclose(in_stream);
            close(out_fd);
            return 1;
        }

        /* generate the bytecode */
        if(sieve_generate_bytecode(&bc, s) == TIMSIEVE_FAIL) {
            syslog(LOG_WARNING,"autocreate_sieve: problem compiling sieve script");
            /* removing the copied script and cleaning up memory */
            unlink(sieve_bctmpname);
            sieve_script_free(&s);
            fclose(in_stream);
            close(out_fd);
            return 1;
        }

        if(sieve_emit_bytecode(out_fd, bc) == TIMSIEVE_FAIL) {
            syslog(LOG_WARNING,"autocreate_sieve: problem emitting sieve script");
            /* removing the copied script and cleaning up memory */
            unlink(sieve_bctmpname);
            sieve_free_bytecode(&bc);
            sieve_script_free(&s);
            fclose(in_stream);
            close(out_fd);
            return 1;
        }

        /* clean up the memory */
        sieve_free_bytecode(&bc);
        sieve_script_free(&s);
    }

    xclose(out_fd);
    rewind(in_stream);

    /* Copy the initial script */
    oldmask = umask(077);
    if((out_fp = fopen(sieve_tmpname, "w")) == NULL) {
        syslog(LOG_WARNING,"autocreate_sieve: Unable to open destination sieve script %s: %m", sieve_tmpname);
        unlink(sieve_bctmpname);
        umask(oldmask);
        fclose(in_stream);
        return 1;
    }
    umask(oldmask);

    while((r = fread(buf,sizeof(char), sizeof(buf), in_stream)) > 0) {
        if( fwrite(buf,sizeof(char), r, out_fp) != (unsigned)r) {
            syslog(LOG_WARNING,"autocreate_sieve: Problem writing to sieve script file %s: %m",sieve_tmpname);
            fclose(out_fp);
            unlink(sieve_tmpname);
            unlink(sieve_bctmpname);
            fclose(in_stream);
            return 1;
        }
    }

    if(feof(in_stream)) {
        fclose(out_fp);
        fclose(in_stream);
    } else { /* ferror */
        fclose(out_fp);
        unlink(sieve_tmpname);
        unlink(sieve_bctmpname);
        fclose(in_stream);
        return 1;
    }

    /* Renaming the necessary stuff */
    if(rename(sieve_tmpname, sieve_script_name)) {
        unlink(sieve_tmpname);
        unlink(sieve_bctmpname);
        return 1;
    }

    if(rename(sieve_bctmpname, sieve_bcscript_name)) {
        unlink(sieve_bctmpname);
        unlink(sieve_bcscript_name);
        return 1;
    }

    /* end now with the symlink */
    if(symlink(sieve_bclink_name, sieve_default)) {
        if(errno != EEXIST) {
            syslog(LOG_WARNING, "autocreate_sieve: problem making the default link (symlink: %m).");
            /* Lets delete the files */
            unlink(sieve_script_name);
            unlink(sieve_bcscript_name);
        }
    }

    /*
     * If everything has succeeded AND we have compiled the script AND we have requested
     * to generate the global script so that it is not compiled each time then we create it.
     */
    if(do_compile &&
          config_getswitch(IMAPOPT_AUTOCREATE_SIEVE_SCRIPT_COMPILE)) {

        if(!compiled_source_script) {
            syslog(LOG_WARNING, "autocreate_sieve: To save a compiled sieve script, autocreate_sieve_compiledscript must have been defined in imapd.conf");
            return 0;
        }

        if(snprintf(sieve_tmpname, MAX_FILENAME, "%s.NEW", compiled_source_script) >= MAX_FILENAME)
            return 0;

        /*
         * Copy everything from the newly created bc sieve sieve script.
         */
        if((in_fd = open(sieve_bcscript_name, O_RDONLY))<0) {
            return 0;
        }

        if((out_fd = open(sieve_tmpname, O_CREAT|O_EXCL|O_WRONLY, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0) {
            if(errno == EEXIST) {
               /* Someone is already doing this so just bail out. */
               syslog(LOG_WARNING, "autocreate_sieve: %s already exists. Some other instance processing it, or it is left over", sieve_tmpname);
                close(in_fd);
                return 0;
            } else if (errno == EACCES) {
                syslog(LOG_WARNING,"autocreate_sieve: No access to create file %s. Check permissions",sieve_tmpname);
                close(in_fd);
                return 0;
            } else {
                syslog(LOG_WARNING,"autocreate_sieve: Unable to create %s: %m",sieve_tmpname);
                close(in_fd);
                return 0;
            }
        }

        while((r = read(in_fd, buf, sizeof(buf))) > 0) {
            if((k = write(out_fd,buf,r)) < 0) {
                syslog(LOG_WARNING, "autocreate_sieve: Error writing to file: %s: %m", sieve_tmpname);
                close(out_fd);
                close(in_fd);
                unlink(sieve_tmpname);
                return 0;
           }
        }

        if(r == 0 ) { /*EOF */
            xclose(out_fd);
            xclose(in_fd);
        } else if (r < 0) {
                syslog(LOG_WARNING, "autocreate_sieve: Error reading file: %s: %m", sieve_bcscript_name);
                xclose(out_fd);
                xclose(in_fd);
                unlink(sieve_tmpname);
                return 0;
        }

        /* Rename the temporary created sieve script to its final name. */
        if(rename(sieve_tmpname, compiled_source_script)) {
            if(errno != EEXIST) {
               unlink(sieve_tmpname);
               unlink(compiled_source_script);
        }
            return 0;
        }

        syslog(LOG_NOTICE, "autocreate_sieve: Compiled sieve script was successfully saved in %s", compiled_source_script);
    }

    return 0;
}
#endif /* USE_SIEVE */

/*
 * Struct needed to be passed as void *rock to
 * mboxlist_autochangesub();
 */
struct changesub_rock_st {
    const char *userid;
    struct auth_state *auth_state;
    int was_explicit;
};

/*
 * Automatically subscribe user to *ALL* shared folders,
 * one has permissions to be subscribed to.
 * INBOX subfolders are excluded.
 */
static int autochangesub(struct findall_data *data, void *rock)
{
    if (!data) return 0;
    struct changesub_rock_st *crock = (struct changesub_rock_st *)rock;
    const char *userid = crock->userid;
    struct auth_state *auth_state = crock->auth_state;
    int was_explicit = crock->was_explicit;
    const char *name = mbname_intname(data->mbname);
    int r;

    /* ignore all user mailboxes, we only want shared */
    if (mboxname_isusermailbox(name, 0)) return 0;

    r = mboxlist_changesub(name, userid, auth_state, 1, 0, 1);

    /* unless this name was explicitly chosen, ignore the failure */
    if (!was_explicit) return 0;

    if (r) {
        syslog(LOG_WARNING,
               "autosubscribe: User %s to folder %s, subscription failed: %s",
               userid, name, error_message(r));
    } else {
        syslog(LOG_NOTICE,
               "autosubscribe: User %s to folder %s, subscription succeeded",
               userid, name);
    }

    return 0;
}

/* string for strarray_split */
#define SEP "|"

/*
 * Automatically subscribe user to a shared folder.
 * Subscription is done successfully, if the shared
 * folder exists and the user has the necessary
 * permissions.
 */
static void autosubscribe_sharedfolders(struct namespace *namespace,
                                        const char *userid,
                                        struct auth_state *auth_state)
{
    strarray_t *folders = NULL;
    const char *sub;
    int i;
    struct changesub_rock_st changesub_rock;

    changesub_rock.userid = userid;
    changesub_rock.auth_state = auth_state;
    changesub_rock.was_explicit = 0;

    /*
     * If subscribeallsharedfolders is set to yes in imapd.conf, then
     * subscribe user to every shared folder one has the apropriate
     * permissions.
     */
    if (config_getswitch(IMAPOPT_AUTOCREATE_SUBSCRIBE_SHAREDFOLDERS_ALL)) {
        /* don't care about errors here, the sub will log them */
        mboxlist_findall(namespace, "*", 0, userid, auth_state,
                         autochangesub, &changesub_rock);
        return;
    }

    /* otherwise, check if there are particular folders to subscribe */

    sub = config_getstring(IMAPOPT_AUTOCREATE_SUBSCRIBE_SHAREDFOLDERS);
    if (!sub) return;

    changesub_rock.was_explicit = 1;

    folders = strarray_split(sub, SEP, STRARRAY_TRIM);

    for (i = 0; i < folders->count; i++) {
        const char *mboxname = strarray_nth(folders, i);
        mboxlist_findone(namespace, mboxname, 0, userid, auth_state,
                         autochangesub, &changesub_rock);
    }

    strarray_free(folders);

    return;
}

struct autocreate_specialuse_rock {
    const char *userid;
    const char *intname;
    const char *name;
};

static void autocreate_specialuse_cb(const char *key, const char *val, void *rock)
{
    struct autocreate_specialuse_rock *ar = (struct autocreate_specialuse_rock *)rock;
    if (strncmp(key, "xlist-", 6)) return;
    if (strcmp(val, ar->name)) return;

    struct buf usebuf = BUF_INITIALIZER;
    buf_putc(&usebuf, '\\');
    buf_appendcstr(&usebuf, key + 6);

    /* we've got an XLIST key that matches the autocreated name */
    char *existing = mboxlist_find_specialuse(buf_cstring(&usebuf), ar->userid);
    if (existing) {
        syslog(LOG_NOTICE, "autocreate: not setting specialuse %s for %s, already exists as %s",
               buf_cstring(&usebuf), ar->intname, existing);
        free(existing);
        goto done;
    }

    int r = annotatemore_write(ar->intname, "/specialuse", ar->userid, &usebuf);
    if (r) {
        syslog(LOG_WARNING, "autocreate: failed to set specialuse %s for %s",
               buf_cstring(&usebuf), ar->intname);
    }
    else {
        syslog(LOG_INFO, "autocreate: set specialuse %s for %s",
               buf_cstring(&usebuf), ar->intname);
    }

 done:
    buf_free(&usebuf);
}

int autocreate_user(struct namespace *namespace,
                    const char *userid)
{
    int r = IMAP_MAILBOX_NONEXISTENT; /* default error if we break early */
    int autocreatequota = config_getint(IMAPOPT_AUTOCREATE_QUOTA);
    int autocreatequotamessage = config_getint(IMAPOPT_AUTOCREATE_QUOTA_MESSAGES);
    int n;
    struct auth_state *auth_state = NULL;
    strarray_t *create = NULL;
    strarray_t *subscribe = NULL;
    int numcrt = 0;
    int numsub = 0;
#ifdef USE_SIEVE
    const char *source_script;
#endif

    /* check for anonymous */
    if (!strcmp(userid, "anonymous"))
        return IMAP_MAILBOX_NONEXISTENT;

    char *inboxname = mboxname_user_mbox(userid, NULL);

    auth_state = auth_newstate(userid);

    /* Added this for debug information. */
    syslog(LOG_DEBUG, "autocreateinbox: autocreate inbox for user %s was called", userid);

    /*
     * While this is not needed for admins
     * and imap_admins accounts, it would be
     * better to separate *all* admins and
     * proxyservers from normal accounts
     * (accounts that have mailboxes).
     * UOA Specific note(1): Even if we do not
     * exclude these servers-classes here,
     * UOA specific code, will neither return
     * role, nor create INBOX, because none of these
     * administrative accounts belong to  the
     * mailRecipient objectclass, or have imapPartition.
     * UOA Specific note(2): Another good reason for doing
     * this, is to prevent the code, from getting into
     * cyrus_ldap.c because of the continues MSA logins to LMTPd.
     */

    /*
     * we need to exclude admins here
     */

    /*
     * Do we really need group membership
     * for admins or service_admins?
     */
    if (global_authisa(auth_state, IMAPOPT_ADMINS)) goto done;

    /*
     * Do we really need group membership
     * for proxyservers?
     */
    if (global_authisa(auth_state, IMAPOPT_PROXYSERVERS)) goto done;

    /*
     * Check if user belongs to the autocreate_users group. This option
     * controls for whom the mailbox may be automatically created. Default
     * value for this option is 'anyone'. So, if not declared, all mailboxes
     * will be created.
     */
    if (!global_authisa(auth_state, IMAPOPT_AUTOCREATE_USERS)) {
        syslog(LOG_DEBUG, "autocreateinbox: User %s does not belong to the autocreate_users. No mailbox is created",
               userid);
        goto done;
    }

    r = mboxlist_createmailbox(inboxname, /*mbtype*/0, /*partition*/NULL,
                               /*isadmin*/1, userid, auth_state,
                               /*localonly*/0, /*forceuser*/0,
                               /*dbonly*/0, /*notify*/1,
                               /*mailboxptr*/NULL);

    if (!r) r = mboxlist_changesub(inboxname, userid, auth_state, 1, 1, 1);
    if (r) {
        syslog(LOG_ERR, "autocreateinbox: User %s, INBOX failed. %s",
               userid, error_message(r));
        goto done;
    }

    if (autocreatequota >= 0 || autocreatequotamessage >= 0) {
        quota_t newquotas[QUOTA_NUMRESOURCES];
        int res;

        for (res = 0 ; res < QUOTA_NUMRESOURCES ; res++)
            newquotas[res] = QUOTA_UNLIMITED;

        if (autocreatequota)
            newquotas[QUOTA_STORAGE] = autocreatequota;

        if (autocreatequotamessage)
            newquotas[QUOTA_MESSAGE] = autocreatequotamessage;

        r = mboxlist_setquotas(inboxname, newquotas, 0);
        if (r) {
            syslog(LOG_ERR, "autocreateinbox: User %s, QUOTA failed. %s",
                   userid, error_message(r));
            goto done;
        }
    }

    syslog(LOG_NOTICE, "autocreateinbox: User %s, INBOX was successfully created",
           userid);

    create = strarray_split(config_getstring(IMAPOPT_AUTOCREATE_INBOX_FOLDERS), SEP, STRARRAY_TRIM);
    subscribe = strarray_split(config_getstring(IMAPOPT_AUTOCREATE_SUBSCRIBE_FOLDERS), SEP, STRARRAY_TRIM);

    for (n = 0; n < create->count; n++) {
        const char *name = strarray_nth(create, n);
        char *foldername = mboxname_user_mbox(userid, name);
        struct autocreate_specialuse_rock specialrock = { userid, foldername, name };

        r = mboxlist_createmailbox(foldername, /*mbtype*/0, /*partition*/NULL,
                                   /*isadmin*/1, userid, auth_state,
                                   /*localonly*/0, /*forceuser*/0,
                                   /*dbonly*/0, /*notify*/1,
                                   /*mailboxptr*/NULL);

        if (!r) {
            numcrt++;
            syslog(LOG_NOTICE, "autocreateinbox: User %s, subfolder %s creation succeeded.",
                   userid, name);
        } else {
            syslog(LOG_WARNING, "autocreateinbox: User %s, subfolder %s creation failed. %s",
                   userid, name, error_message(r));
            r = 0;
            continue;
        }

        /* subscribe if requested */
        if (strarray_find(subscribe, name, 0) >= 0) {
            r = mboxlist_changesub(foldername, userid, auth_state, 1, 1, 1);
            if (!r) {
                numsub++;
                syslog(LOG_NOTICE,"autocreateinbox: User %s, subscription to %s succeeded",
                    userid, name);
            } else {
                syslog(LOG_WARNING, "autocreateinbox: User %s, subscription to  %s failed. %s",
                    userid, name, error_message(r));
                r = 0;
            }
        }

        /* set specialuse if requested */
        config_foreachoverflowstring(autocreate_specialuse_cb, &specialrock);
    }

    if (numcrt)
        syslog(LOG_INFO, "User %s, Inbox subfolders, created %d, subscribed %d",
               userid, numcrt, numsub);

    /*
     * Check if shared folders are available for subscription.
     */
    autosubscribe_sharedfolders(namespace, userid, auth_state);

#ifdef USE_SIEVE
    /*
     * Here the autocreate sieve script feature is iniated from.
     */
    source_script = config_getstring(IMAPOPT_AUTOCREATE_SIEVE_SCRIPT);

    if (source_script) {
        if (!autocreate_sieve(userid, source_script))
            syslog(LOG_NOTICE, "autocreate_sieve: User %s, default sieve script creation succeeded", userid);
        else
            syslog(LOG_WARNING, "autocreate_sieve: User %s, default sieve script creation failed", userid);
    }
#endif

 done:
    free(inboxname);
    strarray_free(create);
    strarray_free(subscribe);
    auth_freestate(auth_state);

    return r;
}