text: /*
   * Copyright 2000-2016 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 <stdlib.h>
  #include <opentls/pem.h>
  #include <opentls/err.h>
  #include <opentls/pkcs12.h>
  
  /* Simple PKCS#12 file reader */
  
  static char *find_friendly_name(PKCS12 *p12)
  {
      STACK_OF(PKCS7) *safes;
      int n, m;
      char *name = NULL;
      PKCS7 *safe;
      STACK_OF(PKCS12_SAFEBAG) *bags;
      PKCS12_SAFEBAG *bag;
  
      if ((safes = PKCS12_unpack_authsafes(p12)) == NULL)
          return NULL;
  
      for (n = 0; n < sk_PKCS7_num(safes) && name == NULL; n++) {
          safe = sk_PKCS7_value(safes, n);
          if (OBJ_obj2nid(safe->type) != NID_pkcs7_data
                  || (bags = PKCS12_unpack_p7data(safe)) == NULL)
              continue;
  
          for (m = 0; m < sk_PKCS12_SAFEBAG_num(bags) && name == NULL; m++) {
              bag = sk_PKCS12_SAFEBAG_value(bags, m);
              name = PKCS12_get_friendlyname(bag);
          }
          sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
      }
  
      sk_PKCS7_pop_free(safes, PKCS7_free);
  
      return name;
  }
  
  int main(int argc, char **argv)
  {
      FILE *fp;
      EVP_PKEY *pkey = NULL;
      X509 *cert = NULL;
      STACK_OF(X509) *ca = NULL;
      PKCS12 *p12 = NULL;
      char *name = NULL;
      int i, ret = EXIT_FAILURE;
  
      if (argc != 4) {
          fprintf(stderr, "Usage: pkread p12file password opfile\n");
          exit(EXIT_FAILURE);
      }
  
      if ((fp = fopen(argv[1], "rb")) == NULL) {
          fprintf(stderr, "Error opening file %s\n", argv[1]);
          exit(EXIT_FAILURE);
      }
      p12 = d2i_PKCS12_fp(fp, NULL);
      fclose(fp);
      if (p12 == NULL) {
          fprintf(stderr, "Error reading PKCS#12 file\n");
          ERR_print_errors_fp(stderr);
          goto err;
      }
      if (!PKCS12_parse(p12, argv[2], &pkey, &cert, &ca)) {
          fprintf(stderr, "Error parsing PKCS#12 file\n");
          ERR_print_errors_fp(stderr);
          goto err;
      }
      name = find_friendly_name(p12);
      PKCS12_free(p12);
      if ((fp = fopen(argv[3], "w")) == NULL) {
          fprintf(stderr, "Error opening file %s\n", argv[1]);
          goto err;
      }
      if (name != NULL)
          fprintf(fp, "***Friendly Name***\n%s\n", name);
      if (pkey != NULL) {
          fprintf(fp, "***Private Key***\n");
          PEM_write_PrivateKey(fp, pkey, NULL, NULL, 0, NULL, NULL);
      }
      if (cert != NULL) {
          fprintf(fp, "***User Certificate***\n");
          PEM_write_X509_AUX(fp, cert);
      }
      if (ca != NULL && sk_X509_num(ca) > 0) {
          fprintf(fp, "***Other Certificates***\n");
          for (i = 0; i < sk_X509_num(ca); i++)
              PEM_write_X509_AUX(fp, sk_X509_value(ca, i));
      }
      fclose(fp);
  
      ret = EXIT_SUCCESS;
  
   err:
      OPENtls_free(name);
      X509_free(cert);
      EVP_PKEY_free(pkey);
      sk_X509_pop_free(ca, X509_free);
  
      return ret;
  }
  