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 a lot 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, const 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"
 221                            " user=\"%s\"\n"
 222                            " srp_verifier=\"%s\"\n"
 223                            " srp_usersalt=\"%s\"\n"
 224                            " g=\"%s\"\n N=\"%s\"\n",
 225                            user, srp_verifier, srp_usersalt, g, N);
 226         BIO_printf(bio, "Pass %s\n", password);
 227
 228         OPENSSL_assert(srp_usersalt != NULL);
 229         if (!(gNid = SRP_create_verifier(user, password, &srp_usersalt,
 230                                          &verifier, N, g))) {
 231             BIO_printf(bio, "Internal error validating SRP verifier\n");
 232         } else {
 233             if (strcmp(verifier, srp_verifier))
 234                 gNid = NULL;
 235             OPENSSL_free(verifier);
 236         }
 237     }
 238     return gNid;
 239 }
 240
 241 static char *srp_create_user(char *user, char **srp_verifier,
 242                              char **srp_usersalt, char *g, char *N,
 243                              char *passout, BIO *bio, int verbose)
 244 {
 245     char password[1024];
 246     PW_CB_DATA cb_tmp;
 247     char *gNid = NULL;
 248     char *salt = NULL;
 249     cb_tmp.prompt_info = user;
 250     cb_tmp.password = passout;
 251
 252     if (password_callback(password, 1024, 1, &cb_tmp) > 0) {
 253         VERBOSE BIO_printf(bio,
 254                            "Creating\n"
 255                            " user=\"%s\"\n"
 256                            " g=\"%s\"\n" " N=\"%s\"\n", user, g, N);
 257         if (!(gNid = SRP_create_verifier(user, password, &salt,
 258                                          srp_verifier, N, g))) {
 259             BIO_printf(bio, "Internal error creating SRP verifier\n");
 260         } else
 261             *srp_usersalt = salt;
 262         VVERBOSE BIO_printf(bio, "gNid=%s salt =\"%s\"\n verifier =\"%s\"\n",
 263                             gNid, salt, *srp_verifier);
 264
 265     }
 266     return gNid;
 267 }
 268
 269 int MAIN(int argc, char **argv)
 270 {
 271     int add_user = 0;
 272     int list_user = 0;
 273     int delete_user = 0;
 274     int modify_user = 0;
 275     char *user = NULL;
 276
 277     char *passargin = NULL, *passargout = NULL;
 278     char *passin = NULL, *passout = NULL;
 279     char *gN = NULL;
 280     int gNindex = -1;
 281     char **gNrow = NULL;
 282     int maxgN = -1;
 283
 284     char *userinfo = NULL;
 285
 286     int badops = 0;
 287     int ret = 1;
 288     int errors = 0;
 289     int verbose = 0;
 290     int doupdatedb = 0;
 291     char *configfile = NULL;
 292     char *dbfile = NULL;
 293     CA_DB *db = NULL;
 294     char **pp;
 295     int i;
 296     long errorline = -1;
 297     char *randfile = NULL;
 298 # ifndef OPENSSL_NO_ENGINE
 299     char *engine = NULL;
 300 # endif
 301     char *tofree = NULL;
 302     DB_ATTR db_attr;
 303
 304 # ifdef EFENCE
 305     EF_PROTECT_FREE = 1;
 306     EF_PROTECT_BELOW = 1;
 307     EF_ALIGNMENT = 0;
 308 # endif
 309
 310     apps_startup();
 311
 312     conf = NULL;
 313     section = NULL;
 314
 315     if (bio_err == NULL)
 316         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 317             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
 318
 319     argc--;
 320     argv++;
 321     while (argc >= 1 && badops == 0) {
 322         if (strcmp(*argv, "-verbose") == 0)
 323             verbose++;
 324         else if (strcmp(*argv, "-config") == 0) {
 325             if (--argc < 1)
 326                 goto bad;
 327             configfile = *(++argv);
 328         } else if (strcmp(*argv, "-name") == 0) {
 329             if (--argc < 1)
 330                 goto bad;
 331             section = *(++argv);
 332         } else if (strcmp(*argv, "-srpvfile") == 0) {
 333             if (--argc < 1)
 334                 goto bad;
 335             dbfile = *(++argv);
 336         } else if (strcmp(*argv, "-add") == 0)
 337             add_user = 1;
 338         else if (strcmp(*argv, "-delete") == 0)
 339             delete_user = 1;
 340         else if (strcmp(*argv, "-modify") == 0)
 341             modify_user = 1;
 342         else if (strcmp(*argv, "-list") == 0)
 343             list_user = 1;
 344         else if (strcmp(*argv, "-gn") == 0) {
 345             if (--argc < 1)
 346                 goto bad;
 347             gN = *(++argv);
 348         } else if (strcmp(*argv, "-userinfo") == 0) {
 349             if (--argc < 1)
 350                 goto bad;
 351             userinfo = *(++argv);
 352         } else if (strcmp(*argv, "-passin") == 0) {
 353             if (--argc < 1)
 354                 goto bad;
 355             passargin = *(++argv);
 356         } else if (strcmp(*argv, "-passout") == 0) {
 357             if (--argc < 1)
 358                 goto bad;
 359             passargout = *(++argv);
 360         }
 361 # ifndef OPENSSL_NO_ENGINE
 362         else if (strcmp(*argv, "-engine") == 0) {
 363             if (--argc < 1)
 364                 goto bad;
 365             engine = *(++argv);
 366         }
 367 # endif
 368
 369         else if (**argv == '-') {
 370  bad:
 371             BIO_printf(bio_err, "unknown option %s\n", *argv);
 372             badops = 1;
 373             break;
 374         } else
 375             break;
 376
 377         argc--;
 378         argv++;
 379     }
 380
 381     if (dbfile && configfile) {
 382         BIO_printf(bio_err,
 383                    "-dbfile and -configfile cannot be specified together.\n");
 384         badops = 1;
 385     }
 386     if (add_user + delete_user + modify_user + list_user != 1) {
 387         BIO_printf(bio_err, "Exactly one of the options "
 388                    "-add, -delete, -modify -list must be specified.\n");
 389         badops = 1;
 390     }
 391     if (delete_user + modify_user + delete_user == 1 && argc <= 0) {
 392         BIO_printf(bio_err, "Need at least one user for options "
 393                    "-add, -delete, -modify. \n");
 394         badops = 1;
 395     }
 396     if ((passin || passout) && argc != 1) {
 397         BIO_printf(bio_err,
 398                    "-passin, -passout arguments only valid with one user.\n");
 399         badops = 1;
 400     }
 401
 402     if (badops) {
 403         for (pp = srp_usage; (*pp != NULL); pp++)
 404             BIO_printf(bio_err, "%s", *pp);
 405
 406         BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR,
 407                    LIST_SEPARATOR_CHAR);
 408         BIO_printf(bio_err,
 409                    "                 load the file (or the files in the directory) into\n");
 410         BIO_printf(bio_err, "                 the random number generator\n");
 411         goto err;
 412     }
 413
 414     ERR_load_crypto_strings();
 415
 416 # ifndef OPENSSL_NO_ENGINE
 417     setup_engine(bio_err, engine, 0);
 418 # endif
 419
 420     if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 421         BIO_printf(bio_err, "Error getting passwords\n");
 422         goto err;
 423     }
 424
 425     if (!dbfile) {
 426
 427         /*****************************************************************/
 428         tofree = NULL;
 429         if (configfile == NULL)
 430             configfile = getenv("OPENSSL_CONF");
 431         if (configfile == NULL)
 432             configfile = getenv("SSLEAY_CONF");
 433         if (configfile == NULL) {
 434             const char *s = X509_get_default_cert_area();
 435             size_t len;
 436
 437 # ifdef OPENSSL_SYS_VMS
 438             len = strlen(s) + sizeof(CONFIG_FILE);
 439             tofree = OPENSSL_malloc(len);
 440             if(!tofree) {
 441                 BIO_printf(bio_err, "Out of memory\n");
 442                 goto err;
 443             }
 444             strcpy(tofree, s);
 445 # else
 446             len = strlen(s) + sizeof(CONFIG_FILE) + 1;
 447             tofree = OPENSSL_malloc(len);
 448             if(!tofree) {
 449                 BIO_printf(bio_err, "Out of memory\n");
 450                 goto err;
 451             }
 452             BUF_strlcpy(tofree, s, len);
 453             BUF_strlcat(tofree, "/", len);
 454 # endif
 455             BUF_strlcat(tofree, CONFIG_FILE, len);
 456             configfile = tofree;
 457         }
 458
 459         VERBOSE BIO_printf(bio_err, "Using configuration from %s\n",
 460                            configfile);
 461         conf = NCONF_new(NULL);
 462         if (NCONF_load(conf, configfile, &errorline) <= 0) {
 463             if (errorline <= 0)
 464                 BIO_printf(bio_err, "error loading the config file '%s'\n",
 465                            configfile);
 466             else
 467                 BIO_printf(bio_err, "error on line %ld of config file '%s'\n",
 468                            errorline, configfile);
 469             goto err;
 470         }
 471         if (tofree) {
 472             OPENSSL_free(tofree);
 473             tofree = NULL;
 474         }
 475
 476         if (!load_config(bio_err, conf))
 477             goto err;
 478
 479         /* Lets get the config section we are using */
 480         if (section == NULL) {
 481             VERBOSE BIO_printf(bio_err,
 482                                "trying to read " ENV_DEFAULT_SRP
 483                                " in \" BASE_SECTION \"\n");
 484
 485             section = NCONF_get_string(conf, BASE_SECTION, ENV_DEFAULT_SRP);
 486             if (section == NULL) {
 487                 lookup_fail(BASE_SECTION, ENV_DEFAULT_SRP);
 488                 goto err;
 489             }
 490         }
 491
 492         if (randfile == NULL && conf)
 493             randfile = NCONF_get_string(conf, BASE_SECTION, "RANDFILE");
 494
 495         VERBOSE BIO_printf(bio_err,
 496                            "trying to read " ENV_DATABASE
 497                            " in section \"%s\"\n", section);
 498
 499         if ((dbfile = NCONF_get_string(conf, section, ENV_DATABASE)) == NULL) {
 500             lookup_fail(section, ENV_DATABASE);
 501             goto err;
 502         }
 503
 504     }
 505     if (randfile == NULL)
 506         ERR_clear_error();
 507     else
 508         app_RAND_load_file(randfile, bio_err, 0);
 509
 510     VERBOSE BIO_printf(bio_err, "Trying to read SRP verifier file \"%s\"\n",
 511                        dbfile);
 512
 513     db = load_index(dbfile, &db_attr);
 514     if (db == NULL)
 515         goto err;
 516
 517     /* Lets check some fields */
 518     for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
 519         pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
 520
 521         if (pp[DB_srptype][0] == DB_SRP_INDEX) {
 522             maxgN = i;
 523             if (gNindex < 0 && gN != NULL && !strcmp(gN, pp[DB_srpid]))
 524                 gNindex = i;
 525
 526             print_index(db, bio_err, i, verbose > 1);
 527         }
 528     }
 529
 530     VERBOSE BIO_printf(bio_err, "Database initialised\n");
 531
 532     if (gNindex >= 0) {
 533         gNrow = sk_OPENSSL_PSTRING_value(db->db->data, gNindex);
 534         print_entry(db, bio_err, gNindex, verbose > 1, "Default g and N");
 535     } else if (maxgN > 0 && !SRP_get_default_gN(gN)) {
 536         BIO_printf(bio_err, "No g and N value for index \"%s\"\n", gN);
 537         goto err;
 538     } else {
 539         VERBOSE BIO_printf(bio_err, "Database has no g N information.\n");
 540         gNrow = NULL;
 541     }
 542
 543     VVERBOSE BIO_printf(bio_err, "Starting user processing\n");
 544
 545     if (argc > 0)
 546         user = *(argv++);
 547
 548     while (list_user || user) {
 549         int userindex = -1;
 550         if (user)
 551             VVERBOSE BIO_printf(bio_err, "Processing user \"%s\"\n", user);
 552         if ((userindex = get_index(db, user, 'U')) >= 0) {
 553             print_user(db, bio_err, userindex, (verbose > 0) || list_user);
 554         }
 555
 556         if (list_user) {
 557             if (user == NULL) {
 558                 BIO_printf(bio_err, "List all users\n");
 559
 560                 for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
 561                     print_user(db, bio_err, i, 1);
 562                 }
 563                 list_user = 0;
 564             } else if (userindex < 0) {
 565                 BIO_printf(bio_err,
 566                            "user \"%s\" does not exist, ignored. t\n", user);
 567                 errors++;
 568             }
 569         } else if (add_user) {
 570             if (userindex >= 0) {
 571                 /* reactivation of a new user */
 572                 char **row =
 573                     sk_OPENSSL_PSTRING_value(db->db->data, userindex);
 574                 BIO_printf(bio_err, "user \"%s\" reactivated.\n", user);
 575                 row[DB_srptype][0] = 'V';
 576
 577                 doupdatedb = 1;
 578             } else {
 579                 char *row[DB_NUMBER];
 580                 char *gNid;
 581                 row[DB_srpverifier] = NULL;
 582                 row[DB_srpsalt] = NULL;
 583                 row[DB_srpinfo] = NULL;
 584                 if (!(gNid = srp_create_user(user, &(row[DB_srpverifier]),
 585                                              &(row[DB_srpsalt]),
 586                                              gNrow ? gNrow[DB_srpsalt] : gN,
 587                                              gNrow ? gNrow[DB_srpverifier] :
 588                                              NULL, passout, bio_err,
 589                                              verbose))) {
 590                     BIO_printf(bio_err,
 591                                "Cannot create srp verifier for user \"%s\","
 592                                " operation abandoned .\n", user);
 593                     errors++;
 594                     goto err;
 595                 }
 596                 row[DB_srpid] = BUF_strdup(user);
 597                 row[DB_srptype] = BUF_strdup("v");
 598                 row[DB_srpgN] = BUF_strdup(gNid);
 599
 600                 if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype]
 601                     || !row[DB_srpverifier] || !row[DB_srpsalt]
 602                     || (userinfo
 603                         && (!(row[DB_srpinfo] = BUF_strdup(userinfo))))
 604                     || !update_index(db, bio_err, row)) {
 605                     if (row[DB_srpid])
 606                         OPENSSL_free(row[DB_srpid]);
 607                     if (row[DB_srpgN])
 608                         OPENSSL_free(row[DB_srpgN]);
 609                     if (row[DB_srpinfo])
 610                         OPENSSL_free(row[DB_srpinfo]);
 611                     if (row[DB_srptype])
 612                         OPENSSL_free(row[DB_srptype]);
 613                     if (row[DB_srpverifier])
 614                         OPENSSL_free(row[DB_srpverifier]);
 615                     if (row[DB_srpsalt])
 616                         OPENSSL_free(row[DB_srpsalt]);
 617                     goto err;
 618                 }
 619                 doupdatedb = 1;
 620             }
 621         } else if (modify_user) {
 622             if (userindex < 0) {
 623                 BIO_printf(bio_err,
 624                            "user \"%s\" does not exist, operation ignored.\n",
 625                            user);
 626                 errors++;
 627             } else {
 628
 629                 char **row =
 630                     sk_OPENSSL_PSTRING_value(db->db->data, userindex);
 631                 char type = row[DB_srptype][0];
 632                 if (type == 'v') {
 633                     BIO_printf(bio_err,
 634                                "user \"%s\" already updated, operation ignored.\n",
 635                                user);
 636                     errors++;
 637                 } else {
 638                     char *gNid;
 639
 640                     if (row[DB_srptype][0] == 'V') {
 641                         int user_gN;
 642                         char **irow = NULL;
 643                         VERBOSE BIO_printf(bio_err,
 644                                            "Verifying password for user \"%s\"\n",
 645                                            user);
 646                         if ((user_gN =
 647                              get_index(db, row[DB_srpgN], DB_SRP_INDEX)) >= 0)
 648                             irow =
 649                                 sk_OPENSSL_PSTRING_value(db->db->data,
 650                                                          userindex);
 651
 652                         if (!srp_verify_user
 653                             (user, row[DB_srpverifier], row[DB_srpsalt],
 654                              irow ? irow[DB_srpsalt] : row[DB_srpgN],
 655                              irow ? irow[DB_srpverifier] : NULL, passin,
 656                              bio_err, verbose)) {
 657                             BIO_printf(bio_err,
 658                                        "Invalid password for user \"%s\", operation abandoned.\n",
 659                                        user);
 660                             errors++;
 661                             goto err;
 662                         }
 663                     }
 664                     VERBOSE BIO_printf(bio_err,
 665                                        "Password for user \"%s\" ok.\n",
 666                                        user);
 667
 668                     if (!(gNid = srp_create_user(user, &(row[DB_srpverifier]),
 669                                                  &(row[DB_srpsalt]),
 670                                                  gNrow ? gNrow[DB_srpsalt] :
 671                                                  NULL,
 672                                                  gNrow ? gNrow[DB_srpverifier]
 673                                                  : NULL, passout, bio_err,
 674                                                  verbose))) {
 675                         BIO_printf(bio_err,
 676                                    "Cannot create srp verifier for user \"%s\","
 677                                    " operation abandoned.\n", user);
 678                         errors++;
 679                         goto err;
 680                     }
 681
 682                     row[DB_srptype][0] = 'v';
 683                     row[DB_srpgN] = BUF_strdup(gNid);
 684
 685                     if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype]
 686                         || !row[DB_srpverifier] || !row[DB_srpsalt]
 687                         || (userinfo
 688                             && (!(row[DB_srpinfo] = BUF_strdup(userinfo)))))
 689                         goto err;
 690
 691                     doupdatedb = 1;
 692                 }
 693             }
 694         } else if (delete_user) {
 695             if (userindex < 0) {
 696                 BIO_printf(bio_err,
 697                            "user \"%s\" does not exist, operation ignored. t\n",
 698                            user);
 699                 errors++;
 700             } else {
 701                 char **xpp =
 702                     sk_OPENSSL_PSTRING_value(db->db->data, userindex);
 703                 BIO_printf(bio_err, "user \"%s\" revoked. t\n", user);
 704
 705                 xpp[DB_srptype][0] = 'R';
 706
 707                 doupdatedb = 1;
 708             }
 709         }
 710         if (--argc > 0)
 711             user = *(argv++);
 712         else {
 713             user = NULL;
 714             list_user = 0;
 715         }
 716     }
 717
 718     VERBOSE BIO_printf(bio_err, "User procession done.\n");
 719
 720     if (doupdatedb) {
 721         /* Lets check some fields */
 722         for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
 723             pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
 724
 725             if (pp[DB_srptype][0] == 'v') {
 726                 pp[DB_srptype][0] = 'V';
 727                 print_user(db, bio_err, i, verbose);
 728             }
 729         }
 730
 731         VERBOSE BIO_printf(bio_err, "Trying to update srpvfile.\n");
 732         if (!save_index(dbfile, "new", db))
 733             goto err;
 734
 735         VERBOSE BIO_printf(bio_err, "Temporary srpvfile created.\n");
 736         if (!rotate_index(dbfile, "new", "old"))
 737             goto err;
 738
 739         VERBOSE BIO_printf(bio_err, "srpvfile updated.\n");
 740     }
 741
 742     ret = (errors != 0);
 743  err:
 744     if (errors != 0)
 745         VERBOSE BIO_printf(bio_err, "User errors %d.\n", errors);
 746
 747     VERBOSE BIO_printf(bio_err, "SRP terminating with code %d.\n", ret);
 748     if (tofree)
 749         OPENSSL_free(tofree);
 750     if (ret)
 751         ERR_print_errors(bio_err);
 752     if (randfile)
 753         app_RAND_write_file(randfile, bio_err);
 754     if (conf)
 755         NCONF_free(conf);
 756     if (db)
 757         free_index(db);
 758
 759     OBJ_cleanup();
 760     apps_shutdown();
 761     OPENSSL_EXIT(ret);
 762 }
 763
 764 #endif