apps/srp.c

   1 /* apps/srp.c */
   2 /*
   3  * Written by Peter Sylvester (peter.sylvester@edelweb.fr) for the EdelKey
   4  * project and contributed to the OpenSSL project 2004.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59 #include <openssl/opensslconf.h>
  60
  61 #ifndef OPENSSL_NO_SRP
  62 # include <stdio.h>
  63 # include <stdlib.h>
  64 # include <string.h>
  65 # include <openssl/conf.h>
  66 # include <openssl/bio.h>
  67 # include <openssl/err.h>
  68 # include <openssl/txt_db.h>
  69 # include <openssl/buffer.h>
  70 # include <openssl/srp.h>
  71
  72 # include "apps.h"
  73
  74 # undef PROG
  75 # define PROG srp_main
  76
  77 # define BASE_SECTION    "srp"
  78 # define CONFIG_FILE "openssl.cnf"
  79
  80 # define ENV_RANDFILE            "RANDFILE"
  81
  82 # define ENV_DATABASE            "srpvfile"
  83 # define ENV_DEFAULT_SRP         "default_srp"
  84
  85 static char *srp_usage[] = {
  86     "usage: srp [args] [user] \n",
  87     "\n",
  88     " -verbose        Talk alot while doing things\n",
  89     " -config file    A config file\n",
  90     " -name arg       The particular srp definition to use\n",
  91     " -srpvfile arg   The srp verifier file name\n",
  92     " -add            add an user and srp verifier\n",
  93     " -modify         modify the srp verifier of an existing user\n",
  94     " -delete         delete user from verifier file\n",
  95     " -list           list user\n",
  96     " -gn arg         g and N values to be used for new verifier\n",
  97     " -userinfo arg   additional info to be set for user\n",
  98     " -passin arg     input file pass phrase source\n",
  99     " -passout arg    output file pass phrase source\n",
 100 # ifndef OPENSSL_NO_ENGINE
 101     " -engine e         - use engine e, possibly a hardware device.\n",
 102 # endif
 103     NULL
 104 };
 105
 106 # ifdef EFENCE
 107 extern int EF_PROTECT_FREE;
 108 extern int EF_PROTECT_BELOW;
 109 extern int EF_ALIGNMENT;
 110 # endif
 111
 112 static CONF *conf = NULL;
 113 static char *section = NULL;
 114
 115 # define VERBOSE if (verbose)
 116 # define VVERBOSE if (verbose>1)
 117
 118 int MAIN(int, char **);
 119
 120 static int get_index(CA_DB *db, char *id, char type)
 121 {
 122     char **pp;
 123     int i;
 124     if (id == NULL)
 125         return -1;
 126     if (type == DB_SRP_INDEX)
 127         for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
 128             pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
 129             if (pp[DB_srptype][0] == DB_SRP_INDEX
 130                 && !strcmp(id, pp[DB_srpid]))
 131                 return i;
 132     } else
 133         for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
 134             pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
 135
 136             if (pp[DB_srptype][0] != DB_SRP_INDEX
 137                 && !strcmp(id, pp[DB_srpid]))
 138                 return i;
 139         }
 140
 141     return -1;
 142 }
 143
 144 static void print_entry(CA_DB *db, BIO *bio, int indx, int verbose, char *s)
 145 {
 146     if (indx >= 0 && verbose) {
 147         int j;
 148         char **pp = sk_OPENSSL_PSTRING_value(db->db->data, indx);
 149         BIO_printf(bio, "%s \"%s\"\n", s, pp[DB_srpid]);
 150         for (j = 0; j < DB_NUMBER; j++) {
 151             BIO_printf(bio_err, "  %d = \"%s\"\n", j, pp[j]);
 152         }
 153     }
 154 }
 155
 156 static void print_index(CA_DB *db, BIO *bio, int indexindex, int verbose)
 157 {
 158     print_entry(db, bio, indexindex, verbose, "g N entry");
 159 }
 160
 161 static void print_user(CA_DB *db, BIO *bio, int userindex, int verbose)
 162 {
 163     if (verbose > 0) {
 164         char **pp = sk_OPENSSL_PSTRING_value(db->db->data, userindex);
 165
 166         if (pp[DB_srptype][0] != 'I') {
 167             print_entry(db, bio, userindex, verbose, "User entry");
 168             print_entry(db, bio, get_index(db, pp[DB_srpgN], 'I'), verbose,
 169                         "g N entry");
 170         }
 171
 172     }
 173 }
 174
 175 static int update_index(CA_DB *db, BIO *bio, char **row)
 176 {
 177     char **irow;
 178     int i;
 179
 180     if ((irow =
 181          (char **)OPENSSL_malloc(sizeof(char *) * (DB_NUMBER + 1))) == NULL) {
 182         BIO_printf(bio_err, "Memory allocation failure\n");
 183         return 0;
 184     }
 185
 186     for (i = 0; i < DB_NUMBER; i++) {
 187         irow[i] = row[i];
 188         row[i] = NULL;
 189     }
 190     irow[DB_NUMBER] = NULL;
 191
 192     if (!TXT_DB_insert(db->db, irow)) {
 193         BIO_printf(bio, "failed to update srpvfile\n");
 194         BIO_printf(bio, "TXT_DB error number %ld\n", db->db->error);
 195         OPENSSL_free(irow);
 196         return 0;
 197     }
 198     return 1;
 199 }
 200
 201 static void lookup_fail(const char *name, char *tag)
 202 {
 203     BIO_printf(bio_err, "variable lookup failed for %s::%s\n", name, tag);
 204 }
 205
 206 static char *srp_verify_user(const char *user, const char *srp_verifier,
 207                              char *srp_usersalt, const char *g, const char *N,
 208                              const char *passin, BIO *bio, int verbose)
 209 {
 210     char password[1024];
 211     PW_CB_DATA cb_tmp;
 212     char *verifier = NULL;
 213     char *gNid = NULL;
 214
 215     cb_tmp.prompt_info = user;
 216     cb_tmp.password = passin;
 217
 218     if (password_callback(password, 1024, 0, &cb_tmp) > 0) {
 219         VERBOSE BIO_printf(bio,
 220                            "Validating\n   user=\"%s\"\n srp_verifier=\"%s\"\n srp_usersalt=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
 221                            user, srp_verifier, srp_usersalt, g, N);
 222         BIO_printf(bio, "Pass %s\n", password);
 223
 224         if (!
 225             (gNid =
 226              SRP_create_verifier(user, password, &srp_usersalt, &verifier, N,
 227                                  g))) {
 228             BIO_printf(bio, "Internal error validating SRP verifier\n");
 229         } else {
 230             if (strcmp(verifier, srp_verifier))
 231                 gNid = NULL;
 232             OPENSSL_free(verifier);
 233         }
 234     }
 235     return gNid;
 236 }
 237
 238 static char *srp_create_user(char *user, char **srp_verifier,
 239                              char **srp_usersalt, char *g, char *N,
 240                              char *passout, BIO *bio, int verbose)
 241 {
 242     char password[1024];
 243     PW_CB_DATA cb_tmp;
 244     char *gNid = NULL;
 245     char *salt = NULL;
 246     cb_tmp.prompt_info = user;
 247     cb_tmp.password = passout;
 248
 249     if (password_callback(password, 1024, 1, &cb_tmp) > 0) {
 250         VERBOSE BIO_printf(bio,
 251                            "Creating\n user=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
 252                            user, g, N);
 253         if (!
 254             (gNid =
 255              SRP_create_verifier(user, password, &salt, srp_verifier, N,
 256                                  g))) {
 257             BIO_printf(bio, "Internal error creating SRP verifier\n");
 258         } else
 259             *srp_usersalt = salt;
 260         VVERBOSE BIO_printf(bio, "gNid=%s salt =\"%s\"\n verifier =\"%s\"\n",
 261                             gNid, salt, *srp_verifier);
 262
 263     }
 264     return gNid;
 265 }
 266
 267 int MAIN(int argc, char **argv)
 268 {
 269     int add_user = 0;
 270     int list_user = 0;
 271     int delete_user = 0;
 272     int modify_user = 0;
 273     char *user = NULL;
 274
 275     char *passargin = NULL, *passargout = NULL;
 276     char *passin = NULL, *passout = NULL;
 277     char *gN = NULL;
 278     int gNindex = -1;
 279     char **gNrow = NULL;
 280     int maxgN = -1;
 281
 282     char *userinfo = NULL;
 283
 284     int badops = 0;
 285     int ret = 1;
 286     int errors = 0;
 287     int verbose = 0;
 288     int doupdatedb = 0;
 289     char *configfile = NULL;
 290     char *dbfile = NULL;
 291     CA_DB *db = NULL;
 292     char **pp;
 293     int i;
 294     long errorline = -1;
 295     char *randfile = NULL;
 296 # ifndef OPENSSL_NO_ENGINE
 297     char *engine = NULL;
 298 # endif
 299     char *tofree = NULL;
 300     DB_ATTR db_attr;
 301
 302 # ifdef EFENCE
 303     EF_PROTECT_FREE = 1;
 304     EF_PROTECT_BELOW = 1;
 305     EF_ALIGNMENT = 0;
 306 # endif
 307
 308     apps_startup();
 309
 310     conf = NULL;
 311     section = NULL;
 312
 313     if (bio_err == NULL)
 314         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 315             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
 316
 317     argc--;
 318     argv++;
 319     while (argc >= 1 && badops == 0) {
 320         if (strcmp(*argv, "-verbose") == 0)
 321             verbose++;
 322         else if (strcmp(*argv, "-config") == 0) {
 323             if (--argc < 1)
 324                 goto bad;
 325             configfile = *(++argv);
 326         } else if (strcmp(*argv, "-name") == 0) {
 327             if (--argc < 1)
 328                 goto bad;
 329             section = *(++argv);
 330         } else if (strcmp(*argv, "-srpvfile") == 0) {
 331             if (--argc < 1)
 332                 goto bad;
 333             dbfile = *(++argv);
 334         } else if (strcmp(*argv, "-add") == 0)
 335             add_user = 1;
 336         else if (strcmp(*argv, "-delete") == 0)
 337             delete_user = 1;
 338         else if (strcmp(*argv, "-modify") == 0)
 339             modify_user = 1;
 340         else if (strcmp(*argv, "-list") == 0)
 341             list_user = 1;
 342         else if (strcmp(*argv, "-gn") == 0) {
 343             if (--argc < 1)
 344                 goto bad;
 345             gN = *(++argv);
 346         } else if (strcmp(*argv, "-userinfo") == 0) {
 347             if (--argc < 1)
 348                 goto bad;
 349             userinfo = *(++argv);
 350         } else if (strcmp(*argv, "-passin") == 0) {
 351             if (--argc < 1)
 352                 goto bad;
 353             passargin = *(++argv);
 354         } else if (strcmp(*argv, "-passout") == 0) {
 355             if (--argc < 1)
 356                 goto bad;
 357             passargout = *(++argv);
 358         }
 359 # ifndef OPENSSL_NO_ENGINE
 360         else if (strcmp(*argv, "-engine") == 0) {
 361             if (--argc < 1)
 362                 goto bad;
 363             engine = *(++argv);
 364         }
 365 # endif
 366
 367         else if (**argv == '-') {
 368  bad:
 369             BIO_printf(bio_err, "unknown option %s\n", *argv);
 370             badops = 1;
 371             break;
 372         } else
 373             break;
 374
 375         argc--;
 376         argv++;
 377     }
 378
 379     if (dbfile && configfile) {
 380         BIO_printf(bio_err,
 381                    "-dbfile and -configfile cannot be specified together.\n");
 382         badops = 1;
 383     }
 384     if (add_user + delete_user + modify_user + list_user != 1) {
 385         BIO_printf(bio_err,
 386                    "Exactly one of the options -add, -delete, -modify -list must be specified.\n");
 387         badops = 1;
 388     }
 389     if (delete_user + modify_user + delete_user == 1 && argc <= 0) {
 390         BIO_printf(bio_err,
 391                    "Need at least one user for options -add, -delete, -modify. \n");
 392         badops = 1;
 393     }
 394     if ((passin || passout) && argc != 1) {
 395         BIO_printf(bio_err,
 396                    "-passin, -passout arguments only valid with one user.\n");
 397         badops = 1;
 398     }
 399
 400     if (badops) {
 401         for (pp = srp_usage; (*pp != NULL); pp++)
 402             BIO_printf(bio_err, "%s", *pp);
 403
 404         BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR,
 405                    LIST_SEPARATOR_CHAR);
 406         BIO_printf(bio_err,
 407                    "                 load the file (or the files in the directory) into\n");
 408         BIO_printf(bio_err, "                 the random number generator\n");
 409         goto err;
 410     }
 411
 412     ERR_load_crypto_strings();
 413
 414 # ifndef OPENSSL_NO_ENGINE
 415     setup_engine(bio_err, engine, 0);
 416 # endif
 417
 418     if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 419         BIO_printf(bio_err, "Error getting passwords\n");
 420         goto err;
 421     }
 422
 423     if (!dbfile) {
 424
 425         /*****************************************************************/
 426         tofree = NULL;
 427         if (configfile == NULL)
 428             configfile = getenv("OPENSSL_CONF");
 429         if (configfile == NULL)
 430             configfile = getenv("SSLEAY_CONF");
 431         if (configfile == NULL) {
 432             const char *s = X509_get_default_cert_area();
 433             size_t len;
 434
 435 # ifdef OPENSSL_SYS_VMS
 436             len = strlen(s) + sizeof(CONFIG_FILE);
 437             tofree = OPENSSL_malloc(len);
 438             if (!tofree) {
 439                 BIO_printf(bio_err, "Out of memory\n");
 440                 goto err;
 441             }
 442             strcpy(tofree, s);
 443 # else
 444             len = strlen(s) + sizeof(CONFIG_FILE) + 1;
 445             tofree = OPENSSL_malloc(len);
 446             if (!tofree) {
 447                 BIO_printf(bio_err, "Out of memory\n");
 448                 goto err;
 449             }
 450             BUF_strlcpy(tofree, s, len);
 451             BUF_strlcat(tofree, "/", len);
 452 # endif
 453             BUF_strlcat(tofree, CONFIG_FILE, len);
 454             configfile = tofree;
 455         }
 456
 457         VERBOSE BIO_printf(bio_err, "Using configuration from %s\n",
 458                            configfile);
 459         conf = NCONF_new(NULL);
 460         if (NCONF_load(conf, configfile, &errorline) <= 0) {
 461             if (errorline <= 0)
 462                 BIO_printf(bio_err, "error loading the config file '%s'\n",
 463                            configfile);
 464             else
 465                 BIO_printf(bio_err, "error on line %ld of config file '%s'\n",
 466                            errorline, configfile);
 467             goto err;
 468         }
 469         if (tofree) {
 470             OPENSSL_free(tofree);
 471             tofree = NULL;
 472         }
 473
 474         if (!load_config(bio_err, conf))
 475             goto err;
 476
 477         /* Lets get the config section we are using */
 478         if (section == NULL) {
 479             VERBOSE BIO_printf(bio_err,
 480                                "trying to read " ENV_DEFAULT_SRP
 481                                " in \" BASE_SECTION \"\n");
 482
 483             section = NCONF_get_string(conf, BASE_SECTION, ENV_DEFAULT_SRP);
 484             if (section == NULL) {
 485                 lookup_fail(BASE_SECTION, ENV_DEFAULT_SRP);
 486                 goto err;
 487             }
 488         }
 489
 490         if (randfile == NULL && conf)
 491             randfile = NCONF_get_string(conf, BASE_SECTION, "RANDFILE");
 492
 493         VERBOSE BIO_printf(bio_err,
 494                            "trying to read " ENV_DATABASE
 495                            " in section \"%s\"\n", section);
 496
 497         if ((dbfile = NCONF_get_string(conf, section, ENV_DATABASE)) == NULL) {
 498             lookup_fail(section, ENV_DATABASE);
 499             goto err;
 500         }
 501
 502     }
 503     if (randfile == NULL)
 504         ERR_clear_error();
 505     else
 506         app_RAND_load_file(randfile, bio_err, 0);
 507
 508     VERBOSE BIO_printf(bio_err, "Trying to read SRP verifier file \"%s\"\n",
 509                        dbfile);
 510
 511     db = load_index(dbfile, &db_attr);
 512     if (db == NULL)
 513         goto err;
 514
 515     /* Lets check some fields */
 516     for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
 517         pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
 518
 519         if (pp[DB_srptype][0] == DB_SRP_INDEX) {
 520             maxgN = i;
 521             if (gNindex < 0 && gN != NULL && !strcmp(gN, pp[DB_srpid]))
 522                 gNindex = i;
 523
 524             print_index(db, bio_err, i, verbose > 1);
 525         }
 526     }
 527
 528     VERBOSE BIO_printf(bio_err, "Database initialised\n");
 529
 530     if (gNindex >= 0) {
 531         gNrow = sk_OPENSSL_PSTRING_value(db->db->data, gNindex);
 532         print_entry(db, bio_err, gNindex, verbose > 1, "Default g and N");
 533     } else if (maxgN > 0 && !SRP_get_default_gN(gN)) {
 534         BIO_printf(bio_err, "No g and N value for index \"%s\"\n", gN);
 535         goto err;
 536     } else {
 537         VERBOSE BIO_printf(bio_err, "Database has no g N information.\n");
 538         gNrow = NULL;
 539     }
 540
 541     VVERBOSE BIO_printf(bio_err, "Starting user processing\n");
 542
 543     if (argc > 0)
 544         user = *(argv++);
 545
 546     while (list_user || user) {
 547         int userindex = -1;
 548         if (user)
 549             VVERBOSE BIO_printf(bio_err, "Processing user \"%s\"\n", user);
 550         if ((userindex = get_index(db, user, 'U')) >= 0) {
 551             print_user(db, bio_err, userindex, (verbose > 0) || list_user);
 552         }
 553
 554         if (list_user) {
 555             if (user == NULL) {
 556                 BIO_printf(bio_err, "List all users\n");
 557
 558                 for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
 559                     print_user(db, bio_err, i, 1);
 560                 }
 561                 list_user = 0;
 562             } else if (userindex < 0) {
 563                 BIO_printf(bio_err,
 564                            "user \"%s\" does not exist, ignored. t\n", user);
 565                 errors++;
 566             }
 567         } else if (add_user) {
 568             if (userindex >= 0) {
 569                 /* reactivation of a new user */
 570                 char **row =
 571                     sk_OPENSSL_PSTRING_value(db->db->data, userindex);
 572                 BIO_printf(bio_err, "user \"%s\" reactivated.\n", user);
 573                 row[DB_srptype][0] = 'V';
 574
 575                 doupdatedb = 1;
 576             } else {
 577                 char *row[DB_NUMBER];
 578                 char *gNid;
 579                 row[DB_srpverifier] = NULL;
 580                 row[DB_srpsalt] = NULL;
 581                 row[DB_srpinfo] = NULL;
 582                 if (!
 583                     (gNid =
 584                      srp_create_user(user, &(row[DB_srpverifier]),
 585                                      &(row[DB_srpsalt]),
 586                                      gNrow ? gNrow[DB_srpsalt] : gN,
 587                                      gNrow ? gNrow[DB_srpverifier] : NULL,
 588                                      passout, bio_err, verbose))) {
 589                     BIO_printf(bio_err,
 590                                "Cannot create srp verifier for user \"%s\", operation abandoned .\n",
 591                                user);
 592                     errors++;
 593                     goto err;
 594                 }
 595                 row[DB_srpid] = BUF_strdup(user);
 596                 row[DB_srptype] = BUF_strdup("v");
 597                 row[DB_srpgN] = BUF_strdup(gNid);
 598
 599                 if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype]
 600                     || !row[DB_srpverifier] || !row[DB_srpsalt] || (userinfo
 601                                                                     &&
 602                                                                     (!(row
 603                                                                        [DB_srpinfo]
 604                                                                        =
 605                                                                        BUF_strdup
 606                                                                        (userinfo))))
 607                     || !update_index(db, bio_err, row)) {
 608                     if (row[DB_srpid])
 609                         OPENSSL_free(row[DB_srpid]);
 610                     if (row[DB_srpgN])
 611                         OPENSSL_free(row[DB_srpgN]);
 612                     if (row[DB_srpinfo])
 613                         OPENSSL_free(row[DB_srpinfo]);
 614                     if (row[DB_srptype])
 615                         OPENSSL_free(row[DB_srptype]);
 616                     if (row[DB_srpverifier])
 617                         OPENSSL_free(row[DB_srpverifier]);
 618                     if (row[DB_srpsalt])
 619                         OPENSSL_free(row[DB_srpsalt]);
 620                     goto err;
 621                 }
 622                 doupdatedb = 1;
 623             }
 624         } else if (modify_user) {
 625             if (userindex < 0) {
 626                 BIO_printf(bio_err,
 627                            "user \"%s\" does not exist, operation ignored.\n",
 628                            user);
 629                 errors++;
 630             } else {
 631
 632                 char **row =
 633                     sk_OPENSSL_PSTRING_value(db->db->data, userindex);
 634                 char type = row[DB_srptype][0];
 635                 if (type == 'v') {
 636                     BIO_printf(bio_err,
 637                                "user \"%s\" already updated, operation ignored.\n",
 638                                user);
 639                     errors++;
 640                 } else {
 641                     char *gNid;
 642
 643                     if (row[DB_srptype][0] == 'V') {
 644                         int user_gN;
 645                         char **irow = NULL;
 646                         VERBOSE BIO_printf(bio_err,
 647                                            "Verifying password for user \"%s\"\n",
 648                                            user);
 649                         if ((user_gN =
 650                              get_index(db, row[DB_srpgN], DB_SRP_INDEX)) >= 0)
 651                             irow =
 652                                 (char **)sk_OPENSSL_PSTRING_value(db->
 653                                                                   db->data,
 654                                                                   userindex);
 655
 656                         if (!srp_verify_user
 657                             (user, row[DB_srpverifier], row[DB_srpsalt],
 658                              irow ? irow[DB_srpsalt] : row[DB_srpgN],
 659                              irow ? irow[DB_srpverifier] : NULL, passin,
 660                              bio_err, verbose)) {
 661                             BIO_printf(bio_err,
 662                                        "Invalid password for user \"%s\", operation abandoned.\n",
 663                                        user);
 664                             errors++;
 665                             goto err;
 666                         }
 667                     }
 668                     VERBOSE BIO_printf(bio_err,
 669                                        "Password for user \"%s\" ok.\n",
 670                                        user);
 671
 672                     if (!
 673                         (gNid =
 674                          srp_create_user(user, &(row[DB_srpverifier]),
 675                                          &(row[DB_srpsalt]),
 676                                          gNrow ? gNrow[DB_srpsalt] : NULL,
 677                                          gNrow ? gNrow[DB_srpverifier] : NULL,
 678                                          passout, bio_err, verbose))) {
 679                         BIO_printf(bio_err,
 680                                    "Cannot create srp verifier for user \"%s\", operation abandoned.\n",
 681                                    user);
 682                         errors++;
 683                         goto err;
 684                     }
 685
 686                     row[DB_srptype][0] = 'v';
 687                     row[DB_srpgN] = BUF_strdup(gNid);
 688
 689                     if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype]
 690                         || !row[DB_srpverifier] || !row[DB_srpsalt]
 691                         || (userinfo
 692                             && (!(row[DB_srpinfo] = BUF_strdup(userinfo)))))
 693                         goto err;
 694
 695                     doupdatedb = 1;
 696                 }
 697             }
 698         } else if (delete_user) {
 699             if (userindex < 0) {
 700                 BIO_printf(bio_err,
 701                            "user \"%s\" does not exist, operation ignored. t\n",
 702                            user);
 703                 errors++;
 704             } else {
 705                 char **xpp =
 706                     sk_OPENSSL_PSTRING_value(db->db->data, userindex);
 707                 BIO_printf(bio_err, "user \"%s\" revoked. t\n", user);
 708
 709                 xpp[DB_srptype][0] = 'R';
 710
 711                 doupdatedb = 1;
 712             }
 713         }
 714         if (--argc > 0)
 715             user = *(argv++);
 716         else {
 717             user = NULL;
 718             list_user = 0;
 719         }
 720     }
 721
 722     VERBOSE BIO_printf(bio_err, "User procession done.\n");
 723
 724     if (doupdatedb) {
 725         /* Lets check some fields */
 726         for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
 727             pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
 728
 729             if (pp[DB_srptype][0] == 'v') {
 730                 pp[DB_srptype][0] = 'V';
 731                 print_user(db, bio_err, i, verbose);
 732             }
 733         }
 734
 735         VERBOSE BIO_printf(bio_err, "Trying to update srpvfile.\n");
 736         if (!save_index(dbfile, "new", db))
 737             goto err;
 738
 739         VERBOSE BIO_printf(bio_err, "Temporary srpvfile created.\n");
 740         if (!rotate_index(dbfile, "new", "old"))
 741             goto err;
 742
 743         VERBOSE BIO_printf(bio_err, "srpvfile updated.\n");
 744     }
 745
 746     ret = (errors != 0);
 747  err:
 748     if (errors != 0)
 749         VERBOSE BIO_printf(bio_err, "User errors %d.\n", errors);
 750
 751     VERBOSE BIO_printf(bio_err, "SRP terminating with code %d.\n", ret);
 752     if (tofree)
 753         OPENSSL_free(tofree);
 754     if (ret)
 755         ERR_print_errors(bio_err);
 756     if (randfile)
 757         app_RAND_write_file(randfile, bio_err);
 758     if (conf)
 759         NCONF_free(conf);
 760     if (db)
 761         free_index(db);
 762
 763     OBJ_cleanup();
 764     apps_shutdown();
 765     OPENSSL_EXIT(ret);
 766 }
 767
 768 #endif