text: /*
   * Copyright 2004-2020 The OpenSSL Project Authors. All Rights Reserved.
   * Copyright (c) 2004, EdelKey Project. All Rights Reserved.
   *
   * Licensed under the Apache License 2.0 (the "License").  You may not use
   * this file except in compliance with the License.  You can obtain a copy
   * in the file LICENSE in the source distribution or at
   * https://www.openssl.org/source/license.html
   *
   * Originally written by Christophe Renou and Peter Sylvester,
   * for the EdelKey project.
   */
  
  #include <openssl/opensslconf.h>
  <<<<<<< HEAD
  
  #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"
  #include "progs.h"
  
  #define BASE_SECTION    "srp"
  #define CONFIG_FILE "openssl.cnf"
  
  
  =======
  #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"
  #include "progs.h"
  
  #define BASE_SECTION    "srp"
  #define CONFIG_FILE "openssl.cnf"
  
  
  >>>>>>> 6e3ba20dc49ccbf12ff4c27a4d8b84dcbeb71654
  #define ENV_DATABASE            "srpvfile"
  #define ENV_DEFAULT_SRP         "default_srp"
  
  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]) == 0)
                  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]) == 0)
                  return i;
          }
      }
  
      return -1;
  }
  
  static void print_entry(CA_DB *db, 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_err, "%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, int indexindex, int verbose)
  {
      print_entry(db, indexindex, verbose, "g N entry");
  }
  
  static void print_user(CA_DB *db, 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, userindex, verbose, "User entry");
              print_entry(db, get_index(db, pp[DB_srpgN], 'I'), verbose,
                          "g N entry");
          }
  
      }
  }
  
  static int update_index(CA_DB *db, char **row)
  {
      char **irow;
      int i;
  
      irow = app_malloc(sizeof(*irow) * (DB_NUMBER + 1), "row pointers");
      for (i = 0; i < DB_NUMBER; i++)
          irow[i] = row[i];
      irow[DB_NUMBER] = NULL;
  
      if (!TXT_DB_insert(db->db, irow)) {
          BIO_printf(bio_err, "failed to update srpvfile\n");
          BIO_printf(bio_err, "TXT_DB error number %ld\n", db->db->error);
          OPENSSL_free(irow);
          return 0;
      }
      return 1;
  }
  
  static char *lookup_conf(const CONF *conf, const char *section, const char *tag)
  {
      char *entry = NCONF_get_string(conf, section, tag);
      if (entry == NULL)
          BIO_printf(bio_err, "variable lookup failed for %s::%s\n", section, tag);
      return entry;
  }
  
  static char *srp_verify_user(const char *user, const char *srp_verifier,
                               char *srp_usersalt, const char *g, const char *N,
                               const char *passin, int verbose)
  {
      char password[1025];
      PW_CB_DATA cb_tmp;
      char *verifier = NULL;
      char *gNid = NULL;
      int len;
  
      cb_tmp.prompt_info = user;
      cb_tmp.password = passin;
  
      len = password_callback(password, sizeof(password)-1, 0, &cb_tmp);
      if (len > 0) {
          password[len] = 0;
          if (verbose)
              BIO_printf(bio_err,
                         "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);
          if (verbose > 1)
              BIO_printf(bio_err, "Pass %s\n", password);
  
          OPENSSL_assert(srp_usersalt != NULL);
          if ((gNid = SRP_create_verifier(user, password, &srp_usersalt,
                                          &verifier, N, g)) == NULL) {
              BIO_printf(bio_err, "Internal error validating SRP verifier\n");
          } else {
              if (strcmp(verifier, srp_verifier))
                  gNid = NULL;
              OPENSSL_free(verifier);
          }
          OPENSSL_cleanse(password, len);
      }
      return gNid;
  }
  
  static char *srp_create_user(char *user, char **srp_verifier,
                               char **srp_usersalt, char *g, char *N,
                               char *passout, int verbose)
  {
      char password[1025];
      PW_CB_DATA cb_tmp;
      char *gNid = NULL;
      char *salt = NULL;
      int len;
      cb_tmp.prompt_info = user;
      cb_tmp.password = passout;
  
      len = password_callback(password, sizeof(password)-1, 1, &cb_tmp);
      if (len > 0) {
          password[len] = 0;
          if (verbose)
              BIO_printf(bio_err, "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)) == NULL) {
              BIO_printf(bio_err, "Internal error creating SRP verifier\n");
          } else {
              *srp_usersalt = salt;
          }
          OPENSSL_cleanse(password, len);
          if (verbose > 1)
              BIO_printf(bio_err, "gNid=%s salt =\"%s\"\n verifier =\"%s\"\n",
                         gNid, salt, *srp_verifier);
  
      }
      return gNid;
  }
  
  typedef enum OPTION_choice {
      OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
      OPT_VERBOSE, OPT_CONFIG, OPT_NAME, OPT_SRPVFILE, OPT_ADD,
      OPT_DELETE, OPT_MODIFY, OPT_LIST, OPT_GN, OPT_USERINFO,
      OPT_PASSIN, OPT_PASSOUT, OPT_ENGINE, OPT_R_ENUM, OPT_PROV_ENUM
  } OPTION_CHOICE;
  
  const OPTIONS srp_options[] = {
      {OPT_HELP_STR, 1, '-', "Usage: %s [options] [user...]\n"},
  
      OPT_SECTION("General"),
      {"help", OPT_HELP, '-', "Display this summary"},
      {"verbose", OPT_VERBOSE, '-', "Talk a lot while doing things"},
      {"config", OPT_CONFIG, '<', "A config file"},
      {"name", OPT_NAME, 's', "The particular srp definition to use"},
  #ifndef OPENSSL_NO_ENGINE
      {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  #endif
  
      OPT_SECTION("Action"),
      {"add", OPT_ADD, '-', "Add a user and srp verifier"},
      {"modify", OPT_MODIFY, '-', "Modify the srp verifier of an existing user"},
      {"delete", OPT_DELETE, '-', "Delete user from verifier file"},
      {"list", OPT_LIST, '-', "List users"},
  
      OPT_SECTION("Configuration"),
      {"srpvfile", OPT_SRPVFILE, '<', "The srp verifier file name"},
      {"gn", OPT_GN, 's', "Set g and N values to be used for new verifier"},
      {"userinfo", OPT_USERINFO, 's', "Additional info to be set for user"},
      {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
      {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
  
      OPT_R_OPTIONS,
  <<<<<<< HEAD
      OPT_PROV_OPTIONS,
  
      OPT_PARAMETERS(),
      {"user", 0, 0, "Username(s) to process (optional)"},
  =======
  #ifndef OPENSSL_NO_ENGINE
      {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  #endif
  >>>>>>> 6e3ba20dc49ccbf12ff4c27a4d8b84dcbeb71654
      {NULL}
  };
  
  int srp_main(int argc, char **argv)
  {
      ENGINE *e = NULL;
      CA_DB *db = NULL;
      CONF *conf = NULL;
      int gNindex = -1, maxgN = -1, ret = 1, errors = 0, verbose = 0, i;
      int doupdatedb = 0, mode = OPT_ERR;
      char *user = NULL, *passinarg = NULL, *passoutarg = NULL;
      char *passin = NULL, *passout = NULL, *gN = NULL, *userinfo = NULL;
      char *section = NULL;
      char **gNrow = NULL, *configfile = NULL;
      char *srpvfile = NULL, **pp, *prog;
      OPTION_CHOICE o;
  
      prog = opt_init(argc, argv, srp_options);
      while ((o = opt_next()) != OPT_EOF) {
          switch (o) {
          case OPT_EOF:
          case OPT_ERR:
   opthelp:
              BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
              goto end;
          case OPT_HELP:
              opt_help(srp_options);
              ret = 0;
              goto end;
          case OPT_VERBOSE:
              verbose++;
              break;
          case OPT_CONFIG:
              configfile = opt_arg();
              break;
          case OPT_NAME:
              section = opt_arg();
              break;
          case OPT_SRPVFILE:
              srpvfile = opt_arg();
              break;
          case OPT_ADD:
          case OPT_DELETE:
          case OPT_MODIFY:
          case OPT_LIST:
              if (mode != OPT_ERR) {
                  BIO_printf(bio_err,
                             "%s: Only one of -add/-delete/-modify/-list\n",
                             prog);
                  goto opthelp;
              }
              mode = o;
              break;
          case OPT_GN:
              gN = opt_arg();
              break;
          case OPT_USERINFO:
              userinfo = opt_arg();
              break;
          case OPT_PASSIN:
              passinarg = opt_arg();
              break;
          case OPT_PASSOUT:
              passoutarg = opt_arg();
              break;
          case OPT_ENGINE:
              e = setup_engine(opt_arg(), 0);
              break;
          case OPT_R_CASES:
              if (!opt_rand(o))
                  goto end;
              break;
          case OPT_PROV_CASES:
              if (!opt_provider(o))
                  goto end;
              break;
          }
      }
  
      /* Optional parameters are usernames. */
      argc = opt_num_rest();
      argv = opt_rest();
  
      if (srpvfile != NULL && configfile != NULL) {
          BIO_printf(bio_err,
                     "-srpvfile and -configfile cannot be specified together.\n");
          goto end;
      }
      if (mode == OPT_ERR) {
          BIO_printf(bio_err,
                     "Exactly one of the options -add, -delete, -modify -list must be specified.\n");
          goto opthelp;
      }
      if (mode == OPT_DELETE || mode == OPT_MODIFY || mode == OPT_ADD) {
          if (argc == 0) {
              BIO_printf(bio_err, "Need at least one user.\n");
              goto opthelp;
          }
          user = *argv++;
      }
      if ((passinarg != NULL || passoutarg != NULL) && argc != 1) {
          BIO_printf(bio_err,
                     "-passin, -passout arguments only valid with one user.\n");
          goto opthelp;
      }
  
      if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
          BIO_printf(bio_err, "Error getting passwords\n");
          goto end;
      }
  
      if (srpvfile == NULL) {
          if (configfile == NULL)
              configfile = default_config_file;
  
          conf = app_load_config_verbose(configfile, verbose);
          if (conf == NULL)
              goto end;
          if (configfile != default_config_file && !app_load_modules(conf))
              goto end;
  
          /* Lets get the config section we are using */
          if (section == NULL) {
              if (verbose)
                  BIO_printf(bio_err,
                             "trying to read " ENV_DEFAULT_SRP
                             " in " BASE_SECTION "\n");
  
              section = lookup_conf(conf, BASE_SECTION, ENV_DEFAULT_SRP);
              if (section == NULL)
                  goto end;
          }
  
          app_RAND_load_conf(conf, BASE_SECTION);
  
          if (verbose)
              BIO_printf(bio_err,
                         "trying to read " ENV_DATABASE " in section \"%s\"\n",
                         section);
  
          srpvfile = lookup_conf(conf, section, ENV_DATABASE);
          if (srpvfile == NULL)
              goto end;
      }
  
      if (verbose)
          BIO_printf(bio_err, "Trying to read SRP verifier file \"%s\"\n",
                     srpvfile);
  
      db = load_index(srpvfile, NULL);
      if (db == NULL)
          goto end;
  
      /* 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]) == 0)
                  gNindex = i;
  
              print_index(db, i, verbose > 1);
          }
      }
  
      if (verbose)
          BIO_printf(bio_err, "Database initialised\n");
  
      if (gNindex >= 0) {
          gNrow = sk_OPENSSL_PSTRING_value(db->db->data, gNindex);
          print_entry(db, 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 end;
      } else {
          if (verbose)
              BIO_printf(bio_err, "Database has no g N information.\n");
          gNrow = NULL;
      }
  
      if (verbose > 1)
          BIO_printf(bio_err, "Starting user processing\n");
  
      while (mode == OPT_LIST || user != NULL) {
          int userindex = -1;
  
          if (user != NULL && verbose > 1)
              BIO_printf(bio_err, "Processing user \"%s\"\n", user);
          if ((userindex = get_index(db, user, 'U')) >= 0)
              print_user(db, userindex, (verbose > 0) || mode == OPT_LIST);
  
          if (mode == OPT_LIST) {
              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, i, 1);
              } else if (userindex < 0) {
                  BIO_printf(bio_err,
                             "user \"%s\" does not exist, ignored. t\n", user);
                  errors++;
              }
          } else if (mode == OPT_ADD) {
              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, verbose))) {
                      BIO_printf(bio_err,
                                 "Cannot create srp verifier for user \"%s\", operation abandoned .\n",
                                 user);
                      errors++;
                      goto end;
                  }
                  row[DB_srpid] = OPENSSL_strdup(user);
                  row[DB_srptype] = OPENSSL_strdup("v");
                  row[DB_srpgN] = OPENSSL_strdup(gNid);
  
                  if ((row[DB_srpid] == NULL)
                      || (row[DB_srpgN] == NULL)
                      || (row[DB_srptype] == NULL)
                      || (row[DB_srpverifier] == NULL)
                      || (row[DB_srpsalt] == NULL)
                      || (userinfo
                          && ((row[DB_srpinfo] = OPENSSL_strdup(userinfo)) == NULL))
                      || !update_index(db, row)) {
                      OPENSSL_free(row[DB_srpid]);
                      OPENSSL_free(row[DB_srpgN]);
                      OPENSSL_free(row[DB_srpinfo]);
                      OPENSSL_free(row[DB_srptype]);
                      OPENSSL_free(row[DB_srpverifier]);
                      OPENSSL_free(row[DB_srpsalt]);
                      goto end;
                  }
                  doupdatedb = 1;
              }
          } else if (mode == OPT_MODIFY) {
              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;
                          if (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 =
                                  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,
                               verbose)) {
                              BIO_printf(bio_err,
                                         "Invalid password for user \"%s\", operation abandoned.\n",
                                         user);
                              errors++;
                              goto end;
                          }
                      }
                      if (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, verbose))) {
                          BIO_printf(bio_err,
                                     "Cannot create srp verifier for user \"%s\", operation abandoned.\n",
                                     user);
                          errors++;
                          goto end;
                      }
  
                      row[DB_srptype][0] = 'v';
                      row[DB_srpgN] = OPENSSL_strdup(gNid);
  
                      if (row[DB_srpid] == NULL
                          || row[DB_srpgN] == NULL
                          || row[DB_srptype] == NULL
                          || row[DB_srpverifier] == NULL
                          || row[DB_srpsalt] == NULL
                          || (userinfo
                              && ((row[DB_srpinfo] = OPENSSL_strdup(userinfo))
                                  == NULL)))
                          goto end;
  
                      doupdatedb = 1;
                  }
              }
          } else if (mode == OPT_DELETE) {
              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;
              }
          }
          user = *argv++;
          if (user == NULL) {
              /* no more processing in any mode if no users left */
              break;
          }
      }
  
      if (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, i, verbose);
              }
          }
  
          if (verbose)
              BIO_printf(bio_err, "Trying to update srpvfile.\n");
          if (!save_index(srpvfile, "new", db))
              goto end;
  
          if (verbose)
              BIO_printf(bio_err, "Temporary srpvfile created.\n");
          if (!rotate_index(srpvfile, "new", "old"))
              goto end;
  
          if (verbose)
              BIO_printf(bio_err, "srpvfile updated.\n");
      }
  
      ret = (errors != 0);
   end:
      if (errors != 0)
          if (verbose)
              BIO_printf(bio_err, "User errors %d.\n", errors);
  
      if (verbose)
          BIO_printf(bio_err, "SRP terminating with code %d.\n", ret);
  
      OPENSSL_free(passin);
      OPENSSL_free(passout);
      if (ret)
          ERR_print_errors(bio_err);
      NCONF_free(conf);
      free_index(db);
      release_engine(e);
      return ret;
  }
  