text: /*
   * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   *
   * Licensed under the OpenSSL license (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
   */
  
  #include <stdio.h>
  #include <string.h>
  #include <stdlib.h>
  #include <openssl/bio.h>
  #include <openssl/crypto.h>
  #include <openssl/lhash.h>
  #include <openssl/conf.h>
  #include <openssl/x509.h>
  #include <openssl/pem.h>
  #include <openssl/ssl.h>
  #ifndef OPENSSL_NO_ENGINE
  # include <openssl/engine.h>
  #endif
  #include <openssl/err.h>
  #ifdef OPENSSL_FIPS
  # include <openssl/fips.h>
  #endif
  #define USE_SOCKETS /* needed for the _O_BINARY defs in the MS world */
  #include "s_apps.h"
  /* Needed to get the other O_xxx flags. */
  #ifdef OPENSSL_SYS_VMS
  # include <unixio.h>
  #endif
  #define INCLUDE_FUNCTION_TABLE
  #include "apps.h"
  
  
  #ifdef OPENSSL_NO_CAMELLIA
  # define FORMAT "%-15s"
  # define COLUMNS 5
  #else
  # define FORMAT "%-18s"
  # define COLUMNS 4
  #endif
  
  /* Special sentinel to exit the program. */
  #define EXIT_THE_PROGRAM (-1)
  #include "../include/openssl/bio.h"
  
  /*
   * The LHASH callbacks ("hash" & "cmp") have been replaced by functions with
   * the base prototypes (we cast each variable inside the function to the
   * required type of "FUNCTION*"). This removes the necessity for
   * macro-generated wrapper functions.
   */
  static LHASH_OF(FUNCTION) *prog_init(void);
  static int do_cmd(LHASH_OF(FUNCTION) *prog, int argc, char *argv[]);
  static void list_pkey(void);
  static void list_type(FUNC_TYPE ft);
  static void list_disabled(void);
  char *default_config_file = NULL;
  
  static CONF *config = NULL;
  BIO *bio_in = NULL;
  BIO *bio_out = NULL;
  BIO *bio_err = NULL;
  
  static int apps_startup()
  {
  #ifdef SIGPIPE
      signal(SIGPIPE, SIG_IGN);
  #endif
  
      /* Set non-default library initialisation settings */
      if (!OPENSSL_init_crypto(OPENSSL_INIT_ENGINE_ALL_BUILTIN
                               | OPENSSL_INIT_LOAD_CONFIG, NULL))
          return 0;
  
  #ifndef OPENSSL_NO_UI
      setup_ui_method();
  #endif
  
      return 1;
  }
  
  static void apps_shutdown()
  {
  #ifndef OPENSSL_NO_UI
      destroy_ui_method();
  #endif
  }
  
  static char *make_config_name()
  {
      const char *t;
      size_t len;
      char *p;
  
      if ((t = getenv("OPENSSL_CONF")) != NULL)
          return OPENSSL_strdup(t);
  
      t = X509_get_default_cert_area();
      len = strlen(t) + 1 + strlen(OPENSSL_CONF) + 1;
      p = app_malloc(len, "config filename buffer");
      strcpy(p, t);
  #ifndef OPENSSL_SYS_VMS
      strcat(p, "/");
  #endif
      strcat(p, OPENSSL_CONF);
  
      return p;
  }
  
  int main(int argc, char *argv[])
  {
      FUNCTION f, *fp;
      LHASH_OF(FUNCTION) *prog = NULL;
      char **copied_argv = NULL;
      char *p, *pname;
      char buf[1024];
      const char *prompt;
      ARGS arg;
      int first, n, i, ret = 0;
  
      arg.argv = NULL;
      arg.size = 0;
  
      /* Set up some of the environment. */
      default_config_file = make_config_name();
      bio_in = dup_bio_in(FORMAT_TEXT);
      bio_out = dup_bio_out(FORMAT_TEXT);
      bio_err = dup_bio_err(FORMAT_TEXT);
  
  #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
      copied_argv = argv = copy_argv(&argc, argv);
  #elif defined(_WIN32)
      /*
       * Replace argv[] with UTF-8 encoded strings.
       */
      win32_utf8argv(&argc, &argv);
  #endif
  
      p = getenv("OPENSSL_DEBUG_MEMORY");
      if (p != NULL && strcmp(p, "on") == 0)
          CRYPTO_set_mem_debug(1);
      CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
  
      if (getenv("OPENSSL_FIPS")) {
  #ifdef OPENSSL_FIPS
          if (!FIPS_mode_set(1)) {
              ERR_print_errors(bio_err);
              return 1;
          }
  #else
          BIO_printf(bio_err, "FIPS mode not supported.\n");
          return 1;
  #endif
      }
  
      if (!apps_startup())
          goto end;
  
      prog = prog_init();
      pname = opt_progname(argv[0]);
  
      /* first check the program name */
      f.name = pname;
      fp = lh_FUNCTION_retrieve(prog, &f);
      if (fp != NULL) {
          argv[0] = pname;
          ret = fp->func(argc, argv);
          goto end;
      }
  
      /* If there is stuff on the command line, run with that. */
      if (argc != 1) {
          argc--;
          argv++;
          ret = do_cmd(prog, argc, argv);
          if (ret < 0)
              ret = 0;
          goto end;
      }
  
      /* ok, lets enter interactive mode */
      for (;;) {
          ret = 0;
          /* Read a line, continue reading if line ends with \ */
          for (p = buf, n = sizeof buf, i = 0, first = 1; n > 0; first = 0) {
              prompt = first ? "OpenSSL> " : "> ";
              p[0] = '\0';
  #ifndef READLINE
              fputs(prompt, stdout);
              fflush(stdout);
              if (!fgets(p, n, stdin))
                  goto end;
              if (p[0] == '\0')
                  goto end;
              i = strlen(p);
              if (i <= 1)
                  break;
              if (p[i - 2] != '\\')
                  break;
              i -= 2;
              p += i;
              n -= i;
  #else
              {
                  extern char *readline(const char *);
                  extern void add_history(const char *cp);
                  char *text;
  
                  text = readline(prompt);
                  if (text == NULL)
                      goto end;
                  i = strlen(text);
                  if (i == 0 || i > n)
                      break;
                  if (text[i - 1] != '\\') {
                      p += strlen(strcpy(p, text));
                      free(text);
                      add_history(buf);
                      break;
                  }
  
                  text[i - 1] = '\0';
                  p += strlen(strcpy(p, text));
                  free(text);
                  n -= i;
              }
  #endif
          }
  
          if (!chopup_args(&arg, buf)) {
              BIO_printf(bio_err, "Can't parse (no memory?)\n");
              break;
          }
  
          ret = do_cmd(prog, arg.argc, arg.argv);
          if (ret == EXIT_THE_PROGRAM) {
              ret = 0;
              goto end;
          }
          if (ret != 0)
              BIO_printf(bio_err, "error in %s\n", arg.argv[0]);
          (void)BIO_flush(bio_out);
          (void)BIO_flush(bio_err);
      }
      ret = 1;
   end:
      OPENSSL_free(copied_argv);
      OPENSSL_free(default_config_file);
      NCONF_free(config);
      config = NULL;
      lh_FUNCTION_free(prog);
      OPENSSL_free(arg.argv);
  
      BIO_free(bio_in);
      BIO_free_all(bio_out);
      apps_shutdown();
  #ifndef OPENSSL_NO_CRYPTO_MDEBUG
      if (CRYPTO_mem_leaks(bio_err) <= 0)
          ret = 1;
  #endif
      BIO_free(bio_err);
      EXIT(ret);
  }
  
  OPTIONS exit_options[] = {
      {NULL}
  };
  
  static void list_cipher_fn(const EVP_CIPHER *c,
                             const char *from, const char *to, void *arg)
  {
      if (c)
          BIO_printf(arg, "%s\n", EVP_CIPHER_name(c));
      else {
          if (!from)
              from = "<undefined>";
          if (!to)
              to = "<undefined>";
          BIO_printf(arg, "%s => %s\n", from, to);
      }
  }
  
  static void list_md_fn(const EVP_MD *m,
                         const char *from, const char *to, void *arg)
  {
      if (m)
          BIO_printf(arg, "%s\n", EVP_MD_name(m));
      else {
          if (!from)
              from = "<undefined>";
          if (!to)
              to = "<undefined>";
          BIO_printf((BIO *)arg, "%s => %s\n", from, to);
      }
  }
  
  /* Unified enum for help and list commands. */
  typedef enum HELPLIST_CHOICE {
      OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
      OPT_COMMANDS, OPT_DIGEST_COMMANDS,
      OPT_DIGEST_ALGORITHMS, OPT_CIPHER_COMMANDS, OPT_CIPHER_ALGORITHMS,
      OPT_PK_ALGORITHMS, OPT_DISABLED
  } HELPLIST_CHOICE;
  
  OPTIONS list_options[] = {
      {"help", OPT_HELP, '-', "Display this summary"},
      {"commands", OPT_COMMANDS, '-', "List of standard commands"},
      {"digest-commands", OPT_DIGEST_COMMANDS, '-',
       "List of message digest commands"},
      {"digest-algorithms", OPT_DIGEST_ALGORITHMS, '-',
       "List of message digest algorithms"},
      {"cipher-commands", OPT_CIPHER_COMMANDS, '-', "List of cipher commands"},
      {"cipher-algorithms", OPT_CIPHER_ALGORITHMS, '-',
       "List of cipher algorithms"},
      {"public-key-algorithms", OPT_PK_ALGORITHMS, '-',
       "List of public key algorithms"},
      {"disabled", OPT_DISABLED, '-',
       "List of disabled features"},
      {NULL}
  };
  
  int list_main(int argc, char **argv)
  {
      char *prog;
      HELPLIST_CHOICE o;
      int done = 0;
  
      prog = opt_init(argc, argv, list_options);
      while ((o = opt_next()) != OPT_EOF) {
          switch (o) {
          case OPT_EOF:  /* Never hit, but suppresses warning */
          case OPT_ERR:
              BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
              return 1;
          case OPT_HELP:
              opt_help(list_options);
              break;
          case OPT_COMMANDS:
              list_type(FT_general);
              break;
          case OPT_DIGEST_COMMANDS:
              list_type(FT_md);
              break;
          case OPT_DIGEST_ALGORITHMS:
              EVP_MD_do_all_sorted(list_md_fn, bio_out);
              break;
          case OPT_CIPHER_COMMANDS:
              list_type(FT_cipher);
              break;
          case OPT_CIPHER_ALGORITHMS:
              EVP_CIPHER_do_all_sorted(list_cipher_fn, bio_out);
              break;
          case OPT_PK_ALGORITHMS:
              list_pkey();
              break;
          case OPT_DISABLED:
              list_disabled();
              break;
          }
          done = 1;
      }
  
      if (!done) {
          BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
          return 1;
      }
  
      return 0;
  }
  
  OPTIONS help_options[] = {
      {"help", OPT_HELP, '-', "Display this summary"},
      {NULL}
  };
  
  int help_main(int argc, char **argv)
  {
      FUNCTION *fp;
      int i, nl;
      FUNC_TYPE tp;
      char *prog;
      HELPLIST_CHOICE o;
  
      prog = opt_init(argc, argv, help_options);
      while ((o = opt_next()) != OPT_EOF) {
          switch (o) {
          default:
              BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
              return 1;
          case OPT_HELP:
              opt_help(help_options);
              return 0;
          }
      }
  
      if (opt_num_rest() != 0) {
          BIO_printf(bio_err, "Usage: %s\n", prog);
          return 1;
      }
  
      BIO_printf(bio_err, "\nStandard commands");
      i = 0;
      tp = FT_none;
      for (fp = functions; fp->name != NULL; fp++) {
          nl = 0;
          if (((i++) % COLUMNS) == 0) {
              BIO_printf(bio_err, "\n");
              nl = 1;
          }
          if (fp->type != tp) {
              tp = fp->type;
              if (!nl)
                  BIO_printf(bio_err, "\n");
              if (tp == FT_md) {
                  i = 1;
                  BIO_printf(bio_err,
                             "\nMessage Digest commands (see the `dgst' command for more details)\n");
              } else if (tp == FT_cipher) {
                  i = 1;
                  BIO_printf(bio_err,
                             "\nCipher commands (see the `enc' command for more details)\n");
              }
          }
          BIO_printf(bio_err, FORMAT, fp->name);
      }
      BIO_printf(bio_err, "\n\n");
      return 0;
  }
  
  int exit_main(int argc, char **argv)
  {
      return EXIT_THE_PROGRAM;
  }
  
  static void list_type(FUNC_TYPE ft)
  {
      FUNCTION *fp;
      int i = 0;
  
      for (fp = functions; fp->name != NULL; fp++)
          if (fp->type == ft) {
              if ((i++ % COLUMNS) == 0)
                  BIO_printf(bio_out, "\n");
              BIO_printf(bio_out, FORMAT, fp->name);
          }
      BIO_printf(bio_out, "\n");
  }
  
  static int do_cmd(LHASH_OF(FUNCTION) *prog, int argc, char *argv[])
  {
      FUNCTION f, *fp;
  
      if (argc <= 0 || argv[0] == NULL)
          return (0);
      f.name = argv[0];
      fp = lh_FUNCTION_retrieve(prog, &f);
      if (fp == NULL) {
          if (EVP_get_digestbyname(argv[0])) {
              f.type = FT_md;
              f.func = dgst_main;
              fp = &f;
          } else if (EVP_get_cipherbyname(argv[0])) {
              f.type = FT_cipher;
              f.func = enc_main;
              fp = &f;
          }
      }
      if (fp != NULL) {
          return (fp->func(argc, argv));
      }
      if ((strncmp(argv[0], "no-", 3)) == 0) {
          /*
           * User is asking if foo is unsupported, by trying to "run" the
           * no-foo command.  Strange.
           */
          f.name = argv[0] + 3;
          if (lh_FUNCTION_retrieve(prog, &f) == NULL) {
              BIO_printf(bio_out, "%s\n", argv[0]);
              return (0);
          }
          BIO_printf(bio_out, "%s\n", argv[0] + 3);
          return 1;
      }
      if (strcmp(argv[0], "quit") == 0 || strcmp(argv[0], "q") == 0 ||
          strcmp(argv[0], "exit") == 0 || strcmp(argv[0], "bye") == 0)
          /* Special value to mean "exit the program. */
          return EXIT_THE_PROGRAM;
  
      BIO_printf(bio_err, "Invalid command '%s'; type \"help\" for a list.\n",
                 argv[0]);
      return (1);
  }
  
  static void list_pkey(void)
  {
      int i;
  
      for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
          const EVP_PKEY_ASN1_METHOD *ameth;
          int pkey_id, pkey_base_id, pkey_flags;
          const char *pinfo, *pem_str;
          ameth = EVP_PKEY_asn1_get0(i);
          EVP_PKEY_asn1_get0_info(&pkey_id, &pkey_base_id, &pkey_flags,
                                  &pinfo, &pem_str, ameth);
          if (pkey_flags & ASN1_PKEY_ALIAS) {
              BIO_printf(bio_out, "Name: %s\n", OBJ_nid2ln(pkey_id));
              BIO_printf(bio_out, "\tAlias for: %s\n",
                         OBJ_nid2ln(pkey_base_id));
          } else {
              BIO_printf(bio_out, "Name: %s\n", pinfo);
              BIO_printf(bio_out, "\tType: %s Algorithm\n",
                         pkey_flags & ASN1_PKEY_DYNAMIC ?
                         "External" : "Builtin");
              BIO_printf(bio_out, "\tOID: %s\n", OBJ_nid2ln(pkey_id));
              if (pem_str == NULL)
                  pem_str = "(none)";
              BIO_printf(bio_out, "\tPEM string: %s\n", pem_str);
          }
  
      }
  }
  
  static int function_cmp(const FUNCTION * a, const FUNCTION * b)
  {
      return strncmp(a->name, b->name, 8);
  }
  
  static unsigned long function_hash(const FUNCTION * a)
  {
      return OPENSSL_LH_strhash(a->name);
  }
  
  static int SortFnByName(const void *_f1, const void *_f2)
  {
      const FUNCTION *f1 = _f1;
      const FUNCTION *f2 = _f2;
  
      if (f1->type != f2->type)
          return f1->type - f2->type;
      return strcmp(f1->name, f2->name);
  }
  
  static void list_disabled(void)
  {
      BIO_puts(bio_out, "Disabled algorithms:\n");
  #ifdef OPENSSL_NO_BF
      BIO_puts(bio_out, "BF\n");
  #endif
  #ifdef OPENSSL_NO_BLAKE2
      BIO_puts(bio_out, "BLAKE2\n");
  #endif
  #ifdef OPENSSL_NO_CAMELLIA
      BIO_puts(bio_out, "CAMELLIA\n");
  #endif
  #ifdef OPENSSL_NO_CAST
      BIO_puts(bio_out, "CAST\n");
  #endif
  #ifdef OPENSSL_NO_CMAC
      BIO_puts(bio_out, "CMAC\n");
  #endif
  #ifdef OPENSSL_NO_CMS
      BIO_puts(bio_out, "CMS\n");
  #endif
  #ifdef OPENSSL_NO_COMP
      BIO_puts(bio_out, "COMP\n");
  #endif
  #ifdef OPENSSL_NO_DES
      BIO_puts(bio_out, "DES\n");
  #endif
  #ifdef OPENSSL_NO_DGRAM
      BIO_puts(bio_out, "DGRAM\n");
  #endif
  #ifdef OPENSSL_NO_DH
      BIO_puts(bio_out, "DH\n");
  #endif
  #ifdef OPENSSL_NO_DSA
      BIO_puts(bio_out, "DSA\n");
  #endif
  #if defined(OPENSSL_NO_DTLS)
      BIO_puts(bio_out, "DTLS\n");
  #endif
  #if defined(OPENSSL_NO_DTLS1)
      BIO_puts(bio_out, "DTLS1\n");
  #endif
  #if defined(OPENSSL_NO_DTLS1_2)
      BIO_puts(bio_out, "DTLS1_2\n");
  #endif
  #ifdef OPENSSL_NO_EC
      BIO_puts(bio_out, "EC\n");
  #endif
  #ifdef OPENSSL_NO_EC2M
      BIO_puts(bio_out, "EC2M\n");
  #endif
  #ifdef OPENSSL_NO_ENGINE
      BIO_puts(bio_out, "ENGINE\n");
  #endif
  #ifdef OPENSSL_NO_GOST
      BIO_puts(bio_out, "GOST\n");
  #endif
  #ifdef OPENSSL_NO_HEARTBEATS
      BIO_puts(bio_out, "HEARTBEATS\n");
  #endif
  #ifdef OPENSSL_NO_IDEA
      BIO_puts(bio_out, "IDEA\n");
  #endif
  #ifdef OPENSSL_NO_MD2
      BIO_puts(bio_out, "MD2\n");
  #endif
  #ifdef OPENSSL_NO_MD4
      BIO_puts(bio_out, "MD4\n");
  #endif
  #ifdef OPENSSL_NO_MD5
      BIO_puts(bio_out, "MD5\n");
  #endif
  #ifdef OPENSSL_NO_MDC2
      BIO_puts(bio_out, "MDC2\n");
  #endif
  #ifdef OPENSSL_NO_OCB
      BIO_puts(bio_out, "OCB\n");
  #endif
  #ifdef OPENSSL_NO_OCSP
      BIO_puts(bio_out, "OCSP\n");
  #endif
  #ifdef OPENSSL_NO_PSK
      BIO_puts(bio_out, "PSK\n");
  #endif
  #ifdef OPENSSL_NO_RC2
      BIO_puts(bio_out, "RC2\n");
  #endif
  #ifdef OPENSSL_NO_RC4
      BIO_puts(bio_out, "RC4\n");
  #endif
  #ifdef OPENSSL_NO_RC5
      BIO_puts(bio_out, "RC5\n");
  #endif
  #ifdef OPENSSL_NO_RMD160
      BIO_puts(bio_out, "RMD160\n");
  #endif
  #ifdef OPENSSL_NO_RSA
      BIO_puts(bio_out, "RSA\n");
  #endif
  #ifdef OPENSSL_NO_SCRYPT
      BIO_puts(bio_out, "SCRYPT\n");
  #endif
  #ifdef OPENSSL_NO_SCTP
      BIO_puts(bio_out, "SCTP\n");
  #endif
  #ifdef OPENSSL_NO_SEED
      BIO_puts(bio_out, "SEED\n");
  #endif
  #ifdef OPENSSL_NO_SOCK
      BIO_puts(bio_out, "SOCK\n");
  #endif
  #ifdef OPENSSL_NO_SRP
      BIO_puts(bio_out, "SRP\n");
  #endif
  #ifdef OPENSSL_NO_SRTP
      BIO_puts(bio_out, "SRTP\n");
  #endif
  #ifdef OPENSSL_NO_SSL3
      BIO_puts(bio_out, "SSL3\n");
  #endif
  #ifdef OPENSSL_NO_TLS1
      BIO_puts(bio_out, "TLS1\n");
  #endif
  #ifdef OPENSSL_NO_TLS1_1
      BIO_puts(bio_out, "TLS1_1\n");
  #endif
  #ifdef OPENSSL_NO_TLS1_2
      BIO_puts(bio_out, "TLS1_2\n");
  #endif
  #ifdef OPENSSL_NO_WHIRLPOOL
      BIO_puts(bio_out, "WHIRLPOOL\n");
  #endif
  #ifndef ZLIB
      BIO_puts(bio_out, "ZLIB\n");
  #endif
  }
  
  static LHASH_OF(FUNCTION) *prog_init(void)
  {
      LHASH_OF(FUNCTION) *ret;
      FUNCTION *f;
      size_t i;
  
      /* Sort alphabetically within category. For nicer help displays. */
      for (i = 0, f = functions; f->name != NULL; ++f, ++i) ;
      qsort(functions, i, sizeof(*functions), SortFnByName);
  
      if ((ret = lh_FUNCTION_new(function_hash, function_cmp)) == NULL)
          return (NULL);
  
      for (f = functions; f->name != NULL; f++)
          (void)lh_FUNCTION_insert(ret, f);
      return (ret);
  }
  