text: /*
   * Copyright 1999-2016 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 <openssl/pkcs12.h>
  #include <stdio.h>
  
  #include "internal/cryptlib.h"
  #include "p12_lcl.h"
  
  static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) * *pbags,
                            PKCS12_SAFEBAG* bag);
  
  static int copy_bag_attr(PKCS12_SAFEBAG* bag, EVP_PKEY* pkey, int nid)
  {
      int idx;
      X509_ATTRIBUTE* attr;
      idx = EVP_PKEY_get_attr_by_NID(pkey, nid, -1);
      if (idx < 0)
          return 1;
      attr = EVP_PKEY_get_attr(pkey, idx);
      if (!X509at_add1_attr(&bag->attrib, attr))
          return 0;
      return 1;
  }
  
  PKCS12* PKCS12_create(const char* pass, const char* name, EVP_PKEY* pkey,
                        X509* cert, STACK_OF(X509) * ca, int nid_key,
                        int nid_cert, int iter, int mac_iter, int keytype)
  {
      PKCS12* p12 = NULL;
      STACK_OF(PKCS7)* safes = NULL;
      STACK_OF(PKCS12_SAFEBAG)* bags = NULL;
      PKCS12_SAFEBAG* bag = NULL;
      int i;
      unsigned char keyid[EVP_MAX_MD_SIZE];
      unsigned int keyidlen = 0;
  
      /* Set defaults */
      if (!nid_cert)
  #ifdef OPENSSL_NO_RC2
          nid_cert = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
  #else
          nid_cert = NID_pbe_WithSHA1And40BitRC2_CBC;
  #endif
      if (!nid_key)
          nid_key = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
      if (!iter)
          iter = PKCS12_DEFAULT_ITER;
      if (!mac_iter)
          mac_iter = 1;
  
      if (!pkey && !cert && !ca)
      {
          PKCS12err(PKCS12_F_PKCS12_CREATE, PKCS12_R_INVALID_NULL_ARGUMENT);
          return NULL;
      }
  
      if (pkey && cert)
      {
          if (!X509_check_private_key(cert, pkey))
              return NULL;
          X509_digest(cert, EVP_sha1(), keyid, &keyidlen);
      }
  
      if (cert)
      {
          bag = PKCS12_add_cert(&bags, cert);
          if (name && !PKCS12_add_friendlyname(bag, name, -1))
              goto err;
          if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
              goto err;
      }
  
      /* Add all other certificates */
      for (i = 0; i < sk_X509_num(ca); i++)
      {
          if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i)))
              goto err;
      }
  
      if (bags && !PKCS12_add_safe(&safes, bags, nid_cert, iter, pass))
          goto err;
  
      sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
      bags = NULL;
  
      if (pkey)
      {
          bag = PKCS12_add_key(&bags, pkey, keytype, iter, nid_key, pass);
  
          if (!bag)
              goto err;
  
          if (!copy_bag_attr(bag, pkey, NID_ms_csp_name))
              goto err;
          if (!copy_bag_attr(bag, pkey, NID_LocalKeySet))
              goto err;
  
          if (name && !PKCS12_add_friendlyname(bag, name, -1))
              goto err;
          if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
              goto err;
      }
  
      if (bags && !PKCS12_add_safe(&safes, bags, -1, 0, NULL))
          goto err;
  
      sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
      bags = NULL;
  
      p12 = PKCS12_add_safes(safes, 0);
  
      if (!p12)
          goto err;
  
      sk_PKCS7_pop_free(safes, PKCS7_free);
  
      safes = NULL;
  
      if ((mac_iter != -1) &&
          !PKCS12_set_mac(p12, pass, -1, NULL, 0, mac_iter, NULL))
          goto err;
  
      return p12;
  
  err:
      PKCS12_free(p12);
      sk_PKCS7_pop_free(safes, PKCS7_free);
      sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
      return NULL;
  }
  
  PKCS12_SAFEBAG* PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) * *pbags, X509* cert)
  {
      PKCS12_SAFEBAG* bag = NULL;
      char* name;
      int namelen = -1;
      unsigned char* keyid;
      int keyidlen = -1;
  
      /* Add user certificate */
      if ((bag = PKCS12_SAFEBAG_create_cert(cert)) == NULL)
          goto err;
  
      /*
       * Use friendlyName and localKeyID in certificate. (if present)
       */
  
      name = (char*)X509_alias_get0(cert, &namelen);
  
      if (name && !PKCS12_add_friendlyname(bag, name, namelen))
          goto err;
  
      keyid = X509_keyid_get0(cert, &keyidlen);
  
      if (keyid && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
          goto err;
  
      if (!pkcs12_add_bag(pbags, bag))
          goto err;
  
      return bag;
  
  err:
      PKCS12_SAFEBAG_free(bag);
      return NULL;
  }
  
  PKCS12_SAFEBAG* PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) * *pbags, EVP_PKEY* key,
                                 int key_usage, int iter, int nid_key,
                                 const char* pass)
  {
  
      PKCS12_SAFEBAG* bag = NULL;
      PKCS8_PRIV_KEY_INFO* p8 = NULL;
  
      /* Make a PKCS#8 structure */
      if ((p8 = EVP_PKEY2PKCS8(key)) == NULL)
          goto err;
      if (key_usage && !PKCS8_add_keyusage(p8, key_usage))
          goto err;
      if (nid_key != -1)
      {
          bag = PKCS12_SAFEBAG_create_pkcs8_encrypt(nid_key, pass, -1, NULL, 0,
                                                    iter, p8);
          PKCS8_PRIV_KEY_INFO_free(p8);
      }
      else
          bag = PKCS12_SAFEBAG_create0_p8inf(p8);
  
      if (!bag)
          goto err;
  
      if (!pkcs12_add_bag(pbags, bag))
          goto err;
  
      return bag;
  
  err:
      PKCS12_SAFEBAG_free(bag);
      return NULL;
  }
  
  int PKCS12_add_safe(STACK_OF(PKCS7) * *psafes, STACK_OF(PKCS12_SAFEBAG) * bags,
                      int nid_safe, int iter, const char* pass)
  {
      PKCS7* p7 = NULL;
      int free_safes = 0;
  
      if (!*psafes)
      {
          *psafes = sk_PKCS7_new_null();
          if (!*psafes)
              return 0;
          free_safes = 1;
      }
      else
          free_safes = 0;
  
      if (nid_safe == 0)
  #ifdef OPENSSL_NO_RC2
          nid_safe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
  #else
          nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC;
  #endif
  
      if (nid_safe == -1)
          p7 = PKCS12_pack_p7data(bags);
      else
          p7 = PKCS12_pack_p7encdata(nid_safe, pass, -1, NULL, 0, iter, bags);
      if (!p7)
          goto err;
  
      if (!sk_PKCS7_push(*psafes, p7))
          goto err;
  
      return 1;
  
  err:
      if (free_safes)
      {
          sk_PKCS7_free(*psafes);
          *psafes = NULL;
      }
      PKCS7_free(p7);
      return 0;
  }
  
  static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) * *pbags,
                            PKCS12_SAFEBAG* bag)
  {
      int free_bags;
      if (!pbags)
          return 1;
      if (!*pbags)
      {
          *pbags = sk_PKCS12_SAFEBAG_new_null();
          if (!*pbags)
              return 0;
          free_bags = 1;
      }
      else
          free_bags = 0;
  
      if (!sk_PKCS12_SAFEBAG_push(*pbags, bag))
      {
          if (free_bags)
          {
              sk_PKCS12_SAFEBAG_free(*pbags);
              *pbags = NULL;
          }
          return 0;
      }
  
      return 1;
  }
  
  PKCS12* PKCS12_add_safes(STACK_OF(PKCS7) * safes, int nid_p7)
  {
      PKCS12* p12;
      if (nid_p7 <= 0)
          nid_p7 = NID_pkcs7_data;
      p12 = PKCS12_init(nid_p7);
  
      if (!p12)
          return NULL;
  
      if (!PKCS12_pack_authsafes(p12, safes))
      {
          PKCS12_free(p12);
          return NULL;
      }
  
      return p12;
  }
  