aboutsummaryrefslogtreecommitdiff
path: root/openssl/apps/srp.c
blob: 47b45fbf9fa942910eaed90177e2284b57cd94c5 (plain)
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
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
/* apps/srp.c */
/*
 * Written by Peter Sylvester (peter.sylvester@edelweb.fr) for the EdelKey
 * project and contributed to the OpenSSL project 2004.
 */
/* ====================================================================
 * Copyright (c) 2004 The OpenSSL Project.  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. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
#include <openssl/opensslconf.h>

#ifndef OPENSSL_NO_SRP
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <openssl/conf.h>
# include <openssl/bio.h>
# include <openssl/err.h>
# include <openssl/txt_db.h>
# include <openssl/buffer.h>
# include <openssl/srp.h>

# include "apps.h"

# undef PROG
# define PROG srp_main

# define BASE_SECTION    "srp"
# define CONFIG_FILE "openssl.cnf"

# define ENV_RANDFILE            "RANDFILE"

# define ENV_DATABASE            "srpvfile"
# define ENV_DEFAULT_SRP         "default_srp"

static char *srp_usage[] = {
    "usage: srp [args] [user] \n",
    "\n",
    " -verbose        Talk alot while doing things\n",
    " -config file    A config file\n",
    " -name arg       The particular srp definition to use\n",
    " -srpvfile arg   The srp verifier file name\n",
    " -add            add an user and srp verifier\n",
    " -modify         modify the srp verifier of an existing user\n",
    " -delete         delete user from verifier file\n",
    " -list           list user\n",
    " -gn arg         g and N values to be used for new verifier\n",
    " -userinfo arg   additional info to be set for user\n",
    " -passin arg     input file pass phrase source\n",
    " -passout arg    output file pass phrase source\n",
# ifndef OPENSSL_NO_ENGINE
    " -engine e         - use engine e, possibly a hardware device.\n",
# endif
    NULL
};

# ifdef EFENCE
extern int EF_PROTECT_FREE;
extern int EF_PROTECT_BELOW;
extern int EF_ALIGNMENT;
# endif

static CONF *conf = NULL;
static char *section = NULL;

# define VERBOSE if (verbose)
# define VVERBOSE if (verbose>1)

int MAIN(int, char **);

static int get_index(CA_DB *db, char *id, char type)
{
    char **pp;
    int i;
    if (id == NULL)
        return -1;
    if (type == DB_SRP_INDEX)
        for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
            pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
            if (pp[DB_srptype][0] == DB_SRP_INDEX
                && !strcmp(id, pp[DB_srpid]))
                return i;
    } else
        for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
            pp = sk_OPENSSL_PSTRING_value(db->db->data, i);

            if (pp[DB_srptype][0] != DB_SRP_INDEX
                && !strcmp(id, pp[DB_srpid]))
                return i;
        }

    return -1;
}

static void print_entry(CA_DB *db, BIO *bio, int indx, int verbose, char *s)
{
    if (indx >= 0 && verbose) {
        int j;
        char **pp = sk_OPENSSL_PSTRING_value(db->db->data, indx);
        BIO_printf(bio, "%s \"%s\"\n", s, pp[DB_srpid]);
        for (j = 0; j < DB_NUMBER; j++) {
            BIO_printf(bio_err, "  %d = \"%s\"\n", j, pp[j]);
        }
    }
}

static void print_index(CA_DB *db, BIO *bio, int indexindex, int verbose)
{
    print_entry(db, bio, indexindex, verbose, "g N entry");
}

static void print_user(CA_DB *db, BIO *bio, int userindex, int verbose)
{
    if (verbose > 0) {
        char **pp = sk_OPENSSL_PSTRING_value(db->db->data, userindex);

        if (pp[DB_srptype][0] != 'I') {
            print_entry(db, bio, userindex, verbose, "User entry");
            print_entry(db, bio, get_index(db, pp[DB_srpgN], 'I'), verbose,
                        "g N entry");
        }

    }
}

static int update_index(CA_DB *db, BIO *bio, char **row)
{
    char **irow;
    int i;

    if ((irow =
         (char **)OPENSSL_malloc(sizeof(char *) * (DB_NUMBER + 1))) == NULL) {
        BIO_printf(bio_err, "Memory allocation failure\n");
        return 0;
    }

    for (i = 0; i < DB_NUMBER; i++) {
        irow[i] = row[i];
        row[i] = NULL;
    }
    irow[DB_NUMBER] = NULL;

    if (!TXT_DB_insert(db->db, irow)) {
        BIO_printf(bio, "failed to update srpvfile\n");
        BIO_printf(bio, "TXT_DB error number %ld\n", db->db->error);
        OPENSSL_free(irow);
        return 0;
    }
    return 1;
}

static void lookup_fail(const char *name, char *tag)
{
    BIO_printf(bio_err, "variable lookup failed for %s::%s\n", name, tag);
}

static char *srp_verify_user(const char *user, const char *srp_verifier,
                             char *srp_usersalt, const char *g, const char *N,
                             const char *passin, BIO *bio, int verbose)
{
    char password[1024];
    PW_CB_DATA cb_tmp;
    char *verifier = NULL;
    char *gNid = NULL;

    cb_tmp.prompt_info = user;
    cb_tmp.password = passin;

    if (password_callback(password, 1024, 0, &cb_tmp) > 0) {
        VERBOSE BIO_printf(bio,
                           "Validating\n   user=\"%s\"\n srp_verifier=\"%s\"\n srp_usersalt=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
                           user, srp_verifier, srp_usersalt, g, N);
        BIO_printf(bio, "Pass %s\n", password);

        if (!
            (gNid =
             SRP_create_verifier(user, password, &srp_usersalt, &verifier, N,
                                 g))) {
            BIO_printf(bio, "Internal error validating SRP verifier\n");
        } else {
            if (strcmp(verifier, srp_verifier))
                gNid = NULL;
            OPENSSL_free(verifier);
        }
    }
    return gNid;
}

static char *srp_create_user(char *user, char **srp_verifier,
                             char **srp_usersalt, char *g, char *N,
                             char *passout, BIO *bio, int verbose)
{
    char password[1024];
    PW_CB_DATA cb_tmp;
    char *gNid = NULL;
    char *salt = NULL;
    cb_tmp.prompt_info = user;
    cb_tmp.password = passout;

    if (password_callback(password, 1024, 1, &cb_tmp) > 0) {
        VERBOSE BIO_printf(bio,
                           "Creating\n user=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
                           user, g, N);
        if (!
            (gNid =
             SRP_create_verifier(user, password, &salt, srp_verifier, N,
                                 g))) {
            BIO_printf(bio, "Internal error creating SRP verifier\n");
        } else
            *srp_usersalt = salt;
        VVERBOSE BIO_printf(bio, "gNid=%s salt =\"%s\"\n verifier =\"%s\"\n",
                            gNid, salt, *srp_verifier);

    }
    return gNid;
}

int MAIN(int argc, char **argv)
{
    int add_user = 0;
    int list_user = 0;
    int delete_user = 0;
    int modify_user = 0;
    char *user = NULL;

    char *passargin = NULL, *passargout = NULL;
    char *passin = NULL, *passout = NULL;
    char *gN = NULL;
    int gNindex = -1;
    char **gNrow = NULL;
    int maxgN = -1;

    char *userinfo = NULL;

    int badops = 0;
    int ret = 1;
    int errors = 0;
    int verbose = 0;
    int doupdatedb = 0;
    char *configfile = NULL;
    char *dbfile = NULL;
    CA_DB *db = NULL;
    char **pp;
    int i;
    long errorline = -1;
    char *randfile = NULL;
# ifndef OPENSSL_NO_ENGINE
    char *engine = NULL;
# endif
    char *tofree = NULL;
    DB_ATTR db_attr;

# ifdef EFENCE
    EF_PROTECT_FREE = 1;
    EF_PROTECT_BELOW = 1;
    EF_ALIGNMENT = 0;
# endif

    apps_startup();

    conf = NULL;
    section = NULL;

    if (bio_err == NULL)
        if ((bio_err = BIO_new(BIO_s_file())) != NULL)
            BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);

    argc--;
    argv++;
    while (argc >= 1 && badops == 0) {
        if (strcmp(*argv, "-verbose") == 0)
            verbose++;
        else if (strcmp(*argv, "-config") == 0) {
            if (--argc < 1)
                goto bad;
            configfile = *(++argv);
        } else if (strcmp(*argv, "-name") == 0) {
            if (--argc < 1)
                goto bad;
            section = *(++argv);
        } else if (strcmp(*argv, "-srpvfile") == 0) {
            if (--argc < 1)
                goto bad;
            dbfile = *(++argv);
        } else if (strcmp(*argv, "-add") == 0)
            add_user = 1;
        else if (strcmp(*argv, "-delete") == 0)
            delete_user = 1;
        else if (strcmp(*argv, "-modify") == 0)
            modify_user = 1;
        else if (strcmp(*argv, "-list") == 0)
            list_user = 1;
        else if (strcmp(*argv, "-gn") == 0) {
            if (--argc < 1)
                goto bad;
            gN = *(++argv);
        } else if (strcmp(*argv, "-userinfo") == 0) {
            if (--argc < 1)
                goto bad;
            userinfo = *(++argv);
        } else if (strcmp(*argv, "-passin") == 0) {
            if (--argc < 1)
                goto bad;
            passargin = *(++argv);
        } else if (strcmp(*argv, "-passout") == 0) {
            if (--argc < 1)
                goto bad;
            passargout = *(++argv);
        }
# ifndef OPENSSL_NO_ENGINE
        else if (strcmp(*argv, "-engine") == 0) {
            if (--argc < 1)
                goto bad;
            engine = *(++argv);
        }
# endif

        else if (**argv == '-') {
 bad:
            BIO_printf(bio_err, "unknown option %s\n", *argv);
            badops = 1;
            break;
        } else
            break;

        argc--;
        argv++;
    }

    if (dbfile && configfile) {
        BIO_printf(bio_err,
                   "-dbfile and -configfile cannot be specified together.\n");
        badops = 1;
    }
    if (add_user + delete_user + modify_user + list_user != 1) {
        BIO_printf(bio_err,
                   "Exactly one of the options -add, -delete, -modify -list must be specified.\n");
        badops = 1;
    }
    if (delete_user + modify_user + delete_user == 1 && argc <= 0) {
        BIO_printf(bio_err,
                   "Need at least one user for options -add, -delete, -modify. \n");
        badops = 1;
    }
    if ((passin || passout) && argc != 1) {
        BIO_printf(bio_err,
                   "-passin, -passout arguments only valid with one user.\n");
        badops = 1;
    }

    if (badops) {
        for (pp = srp_usage; (*pp != NULL); pp++)
            BIO_printf(bio_err, "%s", *pp);

        BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR,
                   LIST_SEPARATOR_CHAR);
        BIO_printf(bio_err,
                   "                 load the file (or the files in the directory) into\n");
        BIO_printf(bio_err, "                 the random number generator\n");
        goto err;
    }

    ERR_load_crypto_strings();

# ifndef OPENSSL_NO_ENGINE
    setup_engine(bio_err, engine, 0);
# endif

    if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
        BIO_printf(bio_err, "Error getting passwords\n");
        goto err;
    }

    if (!dbfile) {

        /*****************************************************************/
        tofree = NULL;
        if (configfile == NULL)
            configfile = getenv("OPENSSL_CONF");
        if (configfile == NULL)
            configfile = getenv("SSLEAY_CONF");
        if (configfile == NULL) {
            const char *s = X509_get_default_cert_area();
            size_t len;

# ifdef OPENSSL_SYS_VMS
            len = strlen(s) + sizeof(CONFIG_FILE);
            tofree = OPENSSL_malloc(len);
            strcpy(tofree, s);
# else
            len = strlen(s) + sizeof(CONFIG_FILE) + 1;
            tofree = OPENSSL_malloc(len);
            BUF_strlcpy(tofree, s, len);
            BUF_strlcat(tofree, "/", len);
# endif
            BUF_strlcat(tofree, CONFIG_FILE, len);
            configfile = tofree;
        }

        VERBOSE BIO_printf(bio_err, "Using configuration from %s\n",
                           configfile);
        conf = NCONF_new(NULL);
        if (NCONF_load(conf, configfile, &errorline) <= 0) {
            if (errorline <= 0)
                BIO_printf(bio_err, "error loading the config file '%s'\n",
                           configfile);
            else
                BIO_printf(bio_err, "error on line %ld of config file '%s'\n",
                           errorline, configfile);
            goto err;
        }
        if (tofree) {
            OPENSSL_free(tofree);
            tofree = NULL;
        }

        if (!load_config(bio_err, conf))
            goto err;

        /* Lets get the config section we are using */
        if (section == NULL) {
            VERBOSE BIO_printf(bio_err,
                               "trying to read " ENV_DEFAULT_SRP
                               " in \" BASE_SECTION \"\n");

            section = NCONF_get_string(conf, BASE_SECTION, ENV_DEFAULT_SRP);
            if (section == NULL) {
                lookup_fail(BASE_SECTION, ENV_DEFAULT_SRP);
                goto err;
            }
        }

        if (randfile == NULL && conf)
            randfile = NCONF_get_string(conf, BASE_SECTION, "RANDFILE");

        VERBOSE BIO_printf(bio_err,
                           "trying to read " ENV_DATABASE
                           " in section \"%s\"\n", section);

        if ((dbfile = NCONF_get_string(conf, section, ENV_DATABASE)) == NULL) {
            lookup_fail(section, ENV_DATABASE);
            goto err;
        }

    }
    if (randfile == NULL)
        ERR_clear_error();
    else
        app_RAND_load_file(randfile, bio_err, 0);

    VERBOSE BIO_printf(bio_err, "Trying to read SRP verifier file \"%s\"\n",
                       dbfile);

    db = load_index(dbfile, &db_attr);
    if (db == NULL)
        goto err;

    /* Lets check some fields */
    for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
        pp = sk_OPENSSL_PSTRING_value(db->db->data, i);

        if (pp[DB_srptype][0] == DB_SRP_INDEX) {
            maxgN = i;
            if (gNindex < 0 && gN != NULL && !strcmp(gN, pp[DB_srpid]))
                gNindex = i;

            print_index(db, bio_err, i, verbose > 1);
        }
    }

    VERBOSE BIO_printf(bio_err, "Database initialised\n");

    if (gNindex >= 0) {
        gNrow = sk_OPENSSL_PSTRING_value(db->db->data, gNindex);
        print_entry(db, bio_err, gNindex, verbose > 1, "Default g and N");
    } else if (maxgN > 0 && !SRP_get_default_gN(gN)) {
        BIO_printf(bio_err, "No g and N value for index \"%s\"\n", gN);
        goto err;
    } else {
        VERBOSE BIO_printf(bio_err, "Database has no g N information.\n");
        gNrow = NULL;
    }

    VVERBOSE BIO_printf(bio_err, "Starting user processing\n");

    if (argc > 0)
        user = *(argv++);

    while (list_user || user) {
        int userindex = -1;
        if (user)
            VVERBOSE BIO_printf(bio_err, "Processing user \"%s\"\n", user);
        if ((userindex = get_index(db, user, 'U')) >= 0) {
            print_user(db, bio_err, userindex, (verbose > 0) || list_user);
        }

        if (list_user) {
            if (user == NULL) {
                BIO_printf(bio_err, "List all users\n");

                for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
                    print_user(db, bio_err, i, 1);
                }
                list_user = 0;
            } else if (userindex < 0) {
                BIO_printf(bio_err,
                           "user \"%s\" does not exist, ignored. t\n", user);
                errors++;
            }
        } else if (add_user) {
            if (userindex >= 0) {
                /* reactivation of a new user */
                char **row =
                    sk_OPENSSL_PSTRING_value(db->db->data, userindex);
                BIO_printf(bio_err, "user \"%s\" reactivated.\n", user);
                row[DB_srptype][0] = 'V';

                doupdatedb = 1;
            } else {
                char *row[DB_NUMBER];
                char *gNid;
                row[DB_srpverifier] = NULL;
                row[DB_srpsalt] = NULL;
                row[DB_srpinfo] = NULL;
                if (!
                    (gNid =
                     srp_create_user(user, &(row[DB_srpverifier]),
                                     &(row[DB_srpsalt]),
                                     gNrow ? gNrow[DB_srpsalt] : gN,
                                     gNrow ? gNrow[DB_srpverifier] : NULL,
                                     passout, bio_err, verbose))) {
                    BIO_printf(bio_err,
                               "Cannot create srp verifier for user \"%s\", operation abandoned .\n",
                               user);
                    errors++;
                    goto err;
                }
                row[DB_srpid] = BUF_strdup(user);
                row[DB_srptype] = BUF_strdup("v");
                row[DB_srpgN] = BUF_strdup(gNid);

                if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype]
                    || !row[DB_srpverifier] || !row[DB_srpsalt] || (userinfo
                                                                    &&
                                                                    (!(row
                                                                       [DB_srpinfo]
                                                                       =
                                                                       BUF_strdup
                                                                       (userinfo))))
                    || !update_index(db, bio_err, row)) {
                    if (row[DB_srpid])
                        OPENSSL_free(row[DB_srpid]);
                    if (row[DB_srpgN])
                        OPENSSL_free(row[DB_srpgN]);
                    if (row[DB_srpinfo])
                        OPENSSL_free(row[DB_srpinfo]);
                    if (row[DB_srptype])
                        OPENSSL_free(row[DB_srptype]);
                    if (row[DB_srpverifier])
                        OPENSSL_free(row[DB_srpverifier]);
                    if (row[DB_srpsalt])
                        OPENSSL_free(row[DB_srpsalt]);
                    goto err;
                }
                doupdatedb = 1;
            }
        } else if (modify_user) {
            if (userindex < 0) {
                BIO_printf(bio_err,
                           "user \"%s\" does not exist, operation ignored.\n",
                           user);
                errors++;
            } else {

                char **row =
                    sk_OPENSSL_PSTRING_value(db->db->data, userindex);
                char type = row[DB_srptype][0];
                if (type == 'v') {
                    BIO_printf(bio_err,
                               "user \"%s\" already updated, operation ignored.\n",
                               user);
                    errors++;
                } else {
                    char *gNid;

                    if (row[DB_srptype][0] == 'V') {
                        int user_gN;
                        char **irow = NULL;
                        VERBOSE BIO_printf(bio_err,
                                           "Verifying password for user \"%s\"\n",
                                           user);
                        if ((user_gN =
                             get_index(db, row[DB_srpgN], DB_SRP_INDEX)) >= 0)
                            irow =
                                (char **)sk_OPENSSL_PSTRING_value(db->
                                                                  db->data,
                                                                  userindex);

                        if (!srp_verify_user
                            (user, row[DB_srpverifier], row[DB_srpsalt],
                             irow ? irow[DB_srpsalt] : row[DB_srpgN],
                             irow ? irow[DB_srpverifier] : NULL, passin,
                             bio_err, verbose)) {
                            BIO_printf(bio_err,
                                       "Invalid password for user \"%s\", operation abandoned.\n",
                                       user);
                            errors++;
                            goto err;
                        }
                    }
                    VERBOSE BIO_printf(bio_err,
                                       "Password for user \"%s\" ok.\n",
                                       user);

                    if (!
                        (gNid =
                         srp_create_user(user, &(row[DB_srpverifier]),
                                         &(row[DB_srpsalt]),
                                         gNrow ? gNrow[DB_srpsalt] : NULL,
                                         gNrow ? gNrow[DB_srpverifier] : NULL,
                                         passout, bio_err, verbose))) {
                        BIO_printf(bio_err,
                                   "Cannot create srp verifier for user \"%s\", operation abandoned.\n",
                                   user);
                        errors++;
                        goto err;
                    }

                    row[DB_srptype][0] = 'v';
                    row[DB_srpgN] = BUF_strdup(gNid);

                    if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype]
                        || !row[DB_srpverifier] || !row[DB_srpsalt]
                        || (userinfo
                            && (!(row[DB_srpinfo] = BUF_strdup(userinfo)))))
                        goto err;

                    doupdatedb = 1;
                }
            }
        } else if (delete_user) {
            if (userindex < 0) {
                BIO_printf(bio_err,
                           "user \"%s\" does not exist, operation ignored. t\n",
                           user);
                errors++;
            } else {
                char **xpp =
                    sk_OPENSSL_PSTRING_value(db->db->data, userindex);
                BIO_printf(bio_err, "user \"%s\" revoked. t\n", user);

                xpp[DB_srptype][0] = 'R';

                doupdatedb = 1;
            }
        }
        if (--argc > 0)
            user = *(argv++);
        else {
            user = NULL;
            list_user = 0;
        }
    }

    VERBOSE BIO_printf(bio_err, "User procession done.\n");

    if (doupdatedb) {
        /* Lets check some fields */
        for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
            pp = sk_OPENSSL_PSTRING_value(db->db->data, i);

            if (pp[DB_srptype][0] == 'v') {
                pp[DB_srptype][0] = 'V';
                print_user(db, bio_err, i, verbose);
            }
        }

        VERBOSE BIO_printf(bio_err, "Trying to update srpvfile.\n");
        if (!save_index(dbfile, "new", db))
            goto err;

        VERBOSE BIO_printf(bio_err, "Temporary srpvfile created.\n");
        if (!rotate_index(dbfile, "new", "old"))
            goto err;

        VERBOSE BIO_printf(bio_err, "srpvfile updated.\n");
    }

    ret = (errors != 0);
 err:
    if (errors != 0)
        VERBOSE BIO_printf(bio_err, "User errors %d.\n", errors);

    VERBOSE BIO_printf(bio_err, "SRP terminating with code %d.\n", ret);
    if (tofree)
        OPENSSL_free(tofree);
    if (ret)
        ERR_print_errors(bio_err);
    if (randfile)
        app_RAND_write_file(randfile, bio_err);
    if (conf)
        NCONF_free(conf);
    if (db)
        free_index(db);

    OBJ_cleanup();
    apps_shutdown();
    OPENSSL_EXIT(ret);
}

#endif