/* Copyright (c) 2018, Google Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */

#include <openssl/pem.h>

#include <gtest/gtest.h>

#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/rsa.h>


// Test that implausible ciphers, notably an IV-less RC4, aren't allowed in PEM.
// This is a regression test for https://github.com/openssl/openssl/issues/6347,
// though our fix differs from upstream.
TEST(PEMTest, NoRC4) {
  static const char kPEM[] =
      "-----BEGIN RSA PUBLIC KEY-----\n"
      "Proc-Type: 4,ENCRYPTED\n"
      "DEK-Info: RC4 -\n"
      "extra-info\n"
      "router-signature\n"
      "\n"
      "Z1w=\n"
      "-----END RSA PUBLIC KEY-----\n";
  bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(kPEM, sizeof(kPEM) - 1));
  ASSERT_TRUE(bio);
  bssl::UniquePtr<RSA> rsa(PEM_read_bio_RSAPublicKey(
      bio.get(), nullptr, nullptr, const_cast<char *>("password")));
  EXPECT_FALSE(rsa);
  uint32_t err = ERR_get_error();
  EXPECT_EQ(ERR_LIB_PEM, ERR_GET_LIB(err));
  EXPECT_EQ(PEM_R_UNSUPPORTED_ENCRYPTION, ERR_GET_REASON(err));
}