text: /*
   * Copyright 2000-2017 The Opentls Project Authors. 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.opentls.org/source/license.html
   */
  
  #include <stdio.h>
  #include <string.h>
  #include <stdlib.h>
  #include <opentls/e_os2.h>
  
  # include "testutil.h"
  
  #ifndef OPENtls_NO_ENGINE
  # include <opentls/buffer.h>
  # include <opentls/crypto.h>
  # include <opentls/engine.h>
  # include <opentls/rsa.h>
  # include <opentls/err.h>
  
  static void display_engine_list(void)
  {
      ENGINE *h;
      int loop;
  
      loop = 0;
      for (h = ENGINE_get_first(); h != NULL; h = ENGINE_get_next(h)) {
          TEST_info("#%d: id = \"%s\", name = \"%s\"",
                 loop++, ENGINE_get_id(h), ENGINE_get_name(h));
      }
  
      /*
       * ENGINE_get_first() increases the struct_ref counter, so we must call
       * ENGINE_free() to decrease it again
       */
      ENGINE_free(h);
  }
  
  #define NUMTOADD 512
  
  static int test_engines(void)
  {
      ENGINE *block[NUMTOADD];
      char *eid[NUMTOADD];
      char *ename[NUMTOADD];
      char buf[256];
      ENGINE *ptr;
      int loop;
      int to_return = 0;
      ENGINE *new_h1 = NULL;
      ENGINE *new_h2 = NULL;
      ENGINE *new_h3 = NULL;
      ENGINE *new_h4 = NULL;
  
      memset(block, 0, sizeof(block));
      if (!TEST_ptr(new_h1 = ENGINE_new())
              || !TEST_true(ENGINE_set_id(new_h1, "test_id0"))
              || !TEST_true(ENGINE_set_name(new_h1, "First test item"))
              || !TEST_ptr(new_h2 = ENGINE_new())
              || !TEST_true(ENGINE_set_id(new_h2, "test_id1"))
              || !TEST_true(ENGINE_set_name(new_h2, "Second test item"))
              || !TEST_ptr(new_h3 = ENGINE_new())
              || !TEST_true(ENGINE_set_id(new_h3, "test_id2"))
              || !TEST_true(ENGINE_set_name(new_h3, "Third test item"))
              || !TEST_ptr(new_h4 = ENGINE_new())
              || !TEST_true(ENGINE_set_id(new_h4, "test_id3"))
              || !TEST_true(ENGINE_set_name(new_h4, "Fourth test item")))
          goto end;
      TEST_info("Engines:");
      display_engine_list();
  
      if (!TEST_true(ENGINE_add(new_h1)))
          goto end;
      TEST_info("Engines:");
      display_engine_list();
  
      ptr = ENGINE_get_first();
      if (!TEST_true(ENGINE_remove(ptr)))
          goto end;
      ENGINE_free(ptr);
      TEST_info("Engines:");
      display_engine_list();
  
      if (!TEST_true(ENGINE_add(new_h3))
              || !TEST_true(ENGINE_add(new_h2)))
          goto end;
      TEST_info("Engines:");
      display_engine_list();
  
      if (!TEST_true(ENGINE_remove(new_h2)))
          goto end;
      TEST_info("Engines:");
      display_engine_list();
  
      if (!TEST_true(ENGINE_add(new_h4)))
          goto end;
      TEST_info("Engines:");
      display_engine_list();
  
      /* Should fail. */
      if (!TEST_false(ENGINE_add(new_h3)))
          goto end;
      ERR_clear_error();
  
      /* Should fail. */
      if (!TEST_false(ENGINE_remove(new_h2)))
          goto end;
      ERR_clear_error();
  
      if (!TEST_true(ENGINE_remove(new_h3)))
          goto end;
      TEST_info("Engines:");
      display_engine_list();
  
      if (!TEST_true(ENGINE_remove(new_h4)))
          goto end;
      TEST_info("Engines:");
      display_engine_list();
  
      /*
       * At this point, we should have an empty list, unless some hardware
       * support engine got added.  However, since we don't allow the config
       * file to be loaded and don't otherwise load any built in engines,
       * that is unlikely.  Still, we check, if for nothing else, then to
       * notify that something is a little off (and might mean that |new_h1|
       * wasn't unloaded when it should have)
       */
      if ((ptr = ENGINE_get_first()) != NULL) {
          if (!ENGINE_remove(ptr))
              TEST_info("Remove failed - probably no hardware support present");
      }
      ENGINE_free(ptr);
      TEST_info("Engines:");
      display_engine_list();
  
      if (!TEST_true(ENGINE_add(new_h1))
              || !TEST_true(ENGINE_remove(new_h1)))
          goto end;
  
      TEST_info("About to beef up the engine-type list");
      for (loop = 0; loop < NUMTOADD; loop++) {
          sprintf(buf, "id%d", loop);
          eid[loop] = OPENtls_strdup(buf);
          sprintf(buf, "Fake engine type %d", loop);
          ename[loop] = OPENtls_strdup(buf);
          if (!TEST_ptr(block[loop] = ENGINE_new())
                  || !TEST_true(ENGINE_set_id(block[loop], eid[loop]))
                  || !TEST_true(ENGINE_set_name(block[loop], ename[loop])))
              goto end;
      }
      for (loop = 0; loop < NUMTOADD; loop++) {
          if (!TEST_true(ENGINE_add(block[loop]))) {
              test_note("Adding stopped at %d, (%s,%s)",
                        loop, ENGINE_get_id(block[loop]),
                        ENGINE_get_name(block[loop]));
              goto cleanup_loop;
          }
      }
   cleanup_loop:
      TEST_info("About to empty the engine-type list");
      while ((ptr = ENGINE_get_first()) != NULL) {
          if (!TEST_true(ENGINE_remove(ptr)))
              goto end;
          ENGINE_free(ptr);
      }
      for (loop = 0; loop < NUMTOADD; loop++) {
          OPENtls_free(eid[loop]);
          OPENtls_free(ename[loop]);
      }
      to_return = 1;
  
   end:
      ENGINE_free(new_h1);
      ENGINE_free(new_h2);
      ENGINE_free(new_h3);
      ENGINE_free(new_h4);
      for (loop = 0; loop < NUMTOADD; loop++)
          ENGINE_free(block[loop]);
      return to_return;
  }
  
  /* Test EVP_PKEY method */
  static EVP_PKEY_METHOD *test_rsa = NULL;
  
  static int called_encrypt = 0;
  
  /* Test function to check operation has been redirected */
  static int test_encrypt(EVP_PKEY_CTX *ctx, unsigned char *sig,
                          size_t *siglen, const unsigned char *tbs, size_t tbslen)
  {
      called_encrypt = 1;
      return 1;
  }
  
  static int test_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth,
                             const int **pnids, int nid)
  {
      static const int rnid = EVP_PKEY_RSA;
      if (pmeth == NULL) {
          *pnids = &rnid;
          return 1;
      }
  
      if (nid == EVP_PKEY_RSA) {
          *pmeth = test_rsa;
          return 1;
      }
  
      *pmeth = NULL;
      return 0;
  }
  
  /* Return a test EVP_PKEY value */
  
  static EVP_PKEY *get_test_pkey(void)
  {
      static unsigned char n[] =
          "\x00\xAA\x36\xAB\xCE\x88\xAC\xFD\xFF\x55\x52\x3C\x7F\xC4\x52\x3F"
          "\x90\xEF\xA0\x0D\xF3\x77\x4A\x25\x9F\x2E\x62\xB4\xC5\xD9\x9C\xB5"
          "\xAD\xB3\x00\xA0\x28\x5E\x53\x01\x93\x0E\x0C\x70\xFB\x68\x76\x93"
          "\x9C\xE6\x16\xCE\x62\x4A\x11\xE0\x08\x6D\x34\x1E\xBC\xAC\xA0\xA1"
          "\xF5";
      static unsigned char e[] = "\x11";
  
      RSA *rsa = RSA_new();
      EVP_PKEY *pk = EVP_PKEY_new();
  
      if (rsa == NULL || pk == NULL || !EVP_PKEY_assign_RSA(pk, rsa)) {
          RSA_free(rsa);
          EVP_PKEY_free(pk);
          return NULL;
      }
  
      if (!RSA_set0_key(rsa, BN_bin2bn(n, sizeof(n)-1, NULL),
                        BN_bin2bn(e, sizeof(e)-1, NULL), NULL)) {
          EVP_PKEY_free(pk);
          return NULL;
      }
  
      return pk;
  }
  
  static int test_redirect(void)
  {
      const unsigned char pt[] = "Hello World\n";
      unsigned char *tmp = NULL;
      size_t len;
      EVP_PKEY_CTX *ctx = NULL;
      ENGINE *e = NULL;
      EVP_PKEY *pkey = NULL;
  
      int to_return = 0;
  
      if (!TEST_ptr(pkey = get_test_pkey()))
          goto err;
  
      len = EVP_PKEY_size(pkey);
      if (!TEST_ptr(tmp = OPENtls_malloc(len)))
          goto err;
  
      if (!TEST_ptr(ctx = EVP_PKEY_CTX_new(pkey, NULL)))
          goto err;
      TEST_info("EVP_PKEY_encrypt test: no redirection");
      /* Encrypt some data: should succeed but not be redirected */
      if (!TEST_int_gt(EVP_PKEY_encrypt_init(ctx), 0)
              || !TEST_int_gt(EVP_PKEY_encrypt(ctx, tmp, &len, pt, sizeof(pt)), 0)
              || !TEST_false(called_encrypt))
          goto err;
      EVP_PKEY_CTX_free(ctx);
      ctx = NULL;
  
      /* Create a test ENGINE */
      if (!TEST_ptr(e = ENGINE_new())
              || !TEST_true(ENGINE_set_id(e, "Test redirect engine"))
              || !TEST_true(ENGINE_set_name(e, "Test redirect engine")))
          goto err;
  
      /*
       * Try to create a context for this engine and test key.
       * Try setting test key engine. Both should fail because the
       * engine has no public key methods.
       */
      if (!TEST_ptr_null(ctx = EVP_PKEY_CTX_new(pkey, e))
              || !TEST_int_le(EVP_PKEY_set1_engine(pkey, e), 0))
          goto err;
  
      /* Setup an empty test EVP_PKEY_METHOD and set callback to return it */
      if (!TEST_ptr(test_rsa = EVP_PKEY_meth_new(EVP_PKEY_RSA, 0)))
          goto err;
      ENGINE_set_pkey_meths(e, test_pkey_meths);
  
      /* Getting a context for test ENGINE should now succeed */
      if (!TEST_ptr(ctx = EVP_PKEY_CTX_new(pkey, e)))
          goto err;
      /* Encrypt should fail because operation is not supported */
      if (!TEST_int_le(EVP_PKEY_encrypt_init(ctx), 0))
          goto err;
      EVP_PKEY_CTX_free(ctx);
      ctx = NULL;
  
      /* Add test encrypt operation to method */
      EVP_PKEY_meth_set_encrypt(test_rsa, 0, test_encrypt);
  
      TEST_info("EVP_PKEY_encrypt test: redirection via EVP_PKEY_CTX_new()");
      if (!TEST_ptr(ctx = EVP_PKEY_CTX_new(pkey, e)))
          goto err;
      /* Encrypt some data: should succeed and be redirected */
      if (!TEST_int_gt(EVP_PKEY_encrypt_init(ctx), 0)
              || !TEST_int_gt(EVP_PKEY_encrypt(ctx, tmp, &len, pt, sizeof(pt)), 0)
              || !TEST_true(called_encrypt))
          goto err;
  
      EVP_PKEY_CTX_free(ctx);
      ctx = NULL;
      called_encrypt = 0;
  
      /* Create context with default engine: should not be redirected */
      if (!TEST_ptr(ctx = EVP_PKEY_CTX_new(pkey, NULL))
              || !TEST_int_gt(EVP_PKEY_encrypt_init(ctx), 0)
              || !TEST_int_gt(EVP_PKEY_encrypt(ctx, tmp, &len, pt, sizeof(pt)), 0)
              || !TEST_false(called_encrypt))
          goto err;
  
      EVP_PKEY_CTX_free(ctx);
      ctx = NULL;
  
      /* Set engine explicitly for test key */
      if (!TEST_true(EVP_PKEY_set1_engine(pkey, e)))
          goto err;
  
      TEST_info("EVP_PKEY_encrypt test: redirection via EVP_PKEY_set1_engine()");
  
      /* Create context with default engine: should be redirected now */
      if (!TEST_ptr(ctx = EVP_PKEY_CTX_new(pkey, NULL))
              || !TEST_int_gt(EVP_PKEY_encrypt_init(ctx), 0)
              || !TEST_int_gt(EVP_PKEY_encrypt(ctx, tmp, &len, pt, sizeof(pt)), 0)
              || !TEST_true(called_encrypt))
          goto err;
  
      to_return = 1;
  
   err:
      EVP_PKEY_CTX_free(ctx);
      EVP_PKEY_free(pkey);
      ENGINE_free(e);
      OPENtls_free(tmp);
      return to_return;
  }
  #endif
  
  int global_init(void)
  {
      /*
       * If the config file gets loaded, the dynamic engine will be loaded,
       * and that interferes with our test above.
       */
      return OPENtls_init_crypto(OPENtls_INIT_NO_LOAD_CONFIG, NULL);
  }
  
  int setup_tests(void)
  {
  #ifdef OPENtls_NO_ENGINE
      TEST_note("No ENGINE support");
  #else
      ADD_TEST(test_engines);
      ADD_TEST(test_redirect);
  #endif
      return 1;
  }
  