text: /*
   * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License").
   * You may not use this file except in compliance with the License.
   * A copy of the License is located at
   *
   *  http://aws.amazon.com/apache2.0
   *
   * or in the "license" file accompanying this file. This file is distributed
   * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
   * express or implied. See the License for the specific language governing
   * permissions and limitations under the License.
   */
  
  #include <stdio.h>
  #include <stdint.h>
  
  #include "error/s2n_errno.h"
  
  #include "stuffer/s2n_stuffer.h"
  
  #include "utils/s2n_safety.h"
  
  #include "testlib/s2n_testlib.h"
  
  int s2n_test_cert_chain_and_key_new(struct s2n_cert_chain_and_key **chain_and_key,
          const char *cert_chain_file, const char *private_key_file)
  {
      char cert_chain_pem[S2N_MAX_TEST_PEM_SIZE];
      char private_key_pem[S2N_MAX_TEST_PEM_SIZE];
  
      POSIX_GUARD(s2n_read_test_pem(cert_chain_file, cert_chain_pem, S2N_MAX_TEST_PEM_SIZE));
      POSIX_GUARD(s2n_read_test_pem(private_key_file, private_key_pem, S2N_MAX_TEST_PEM_SIZE));
  
      POSIX_GUARD_PTR(*chain_and_key = s2n_cert_chain_and_key_new());
      POSIX_GUARD(s2n_cert_chain_and_key_load_pem(*chain_and_key, cert_chain_pem, private_key_pem));
  
      return S2N_SUCCESS;
  }
  
  int s2n_read_test_pem(const char *pem_path, char *pem_out, long int max_size)
  {
      FILE *pem_file = fopen(pem_path, "rb");
      if (!pem_file) {
          POSIX_BAIL(S2N_ERR_NULL);
      }
  
      /* Make sure we can fit the pem into the output buffer */
      fseek(pem_file, 0, SEEK_END);
      const long int pem_file_size = ftell(pem_file);
      /* one extra for the null byte */
      rewind(pem_file);
  
      if (max_size < (pem_file_size + 1)) {
          POSIX_BAIL(S2N_ERR_NOMEM);
      }
  
      if (fread(pem_out, sizeof(char), pem_file_size, pem_file) < pem_file_size) {
          POSIX_BAIL(S2N_ERR_IO);
      }
  
      pem_out[pem_file_size] = '\0';
      fclose(pem_file);
  
      return 0;
  }
  
  