text: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   * All rights reserved.
   *
   * This package is an SSL implementation written
   * by Eric Young (eay@cryptsoft.com).
   * The implementation was written so as to conform with Netscapes SSL.
   *
   * This library is free for commercial and non-commercial use as long as
   * the following conditions are aheared to.  The following conditions
   * apply to all code found in this distribution, be it the RC4, RSA,
   * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
   * included with this distribution is covered by the same copyright terms
   * except that the holder is Tim Hudson (tjh@cryptsoft.com).
   *
   * Copyright remains Eric Young's, and as such any Copyright notices in
   * the code are not to be removed.
   * If this package is used in a product, Eric Young should be given attribution
   * as the author of the parts of the library used.
   * This can be in the form of a textual message at program startup or
   * in documentation (online or textual) provided with the package.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *    "This product includes cryptographic software written by
   *     Eric Young (eay@cryptsoft.com)"
   *    The word 'cryptographic' can be left out if the rouines from the library
   *    being used are not cryptographic related :-).
   * 4. If you include any Windows specific code (or a derivative thereof) from
   *    the apps directory (application code) you must include an acknowledgement:
   *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
   *
   * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * The licence and distribution terms for any publically available version or
   * derivative of this code cannot be changed.  i.e. this code cannot simply be
   * copied and put under another distribution licence
   * [including the GNU Public Licence.] */
  
  #include <CJWTKitBoringSSL_asn1.h>
  
  #include <string.h>
  
  #include <CJWTKitBoringSSL_asn1t.h>
  #include <CJWTKitBoringSSL_err.h>
  #include <CJWTKitBoringSSL_mem.h>
  #include <CJWTKitBoringSSL_obj.h>
  
  #include "asn1_locl.h"
  #include "../internal.h"
  
  
  static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
                                      int combine);
  static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
  static int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
  static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
  static int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
  static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
  
  ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
  {
      ASN1_VALUE *ret = NULL;
      if (ASN1_item_ex_new(&ret, it) > 0)
          return ret;
      return NULL;
  }
  
  /* Allocate an ASN1 structure */
  
  int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
  {
      return asn1_item_ex_combine_new(pval, it, 0);
  }
  
  static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
                                      int combine)
  {
      const ASN1_TEMPLATE *tt = NULL;
      const ASN1_EXTERN_FUNCS *ef;
      const ASN1_AUX *aux = it->funcs;
      ASN1_aux_cb *asn1_cb;
      ASN1_VALUE **pseqval;
      int i;
      if (aux && aux->asn1_cb)
          asn1_cb = aux->asn1_cb;
      else
          asn1_cb = 0;
  
      switch (it->itype) {
  
      case ASN1_ITYPE_EXTERN:
          ef = it->funcs;
          if (ef && ef->asn1_ex_new) {
              if (!ef->asn1_ex_new(pval, it))
                  goto memerr;
          }
          break;
  
      case ASN1_ITYPE_PRIMITIVE:
          if (it->templates) {
              if (!ASN1_template_new(pval, it->templates))
                  goto memerr;
          } else if (!ASN1_primitive_new(pval, it))
              goto memerr;
          break;
  
      case ASN1_ITYPE_MSTRING:
          if (!ASN1_primitive_new(pval, it))
              goto memerr;
          break;
  
      case ASN1_ITYPE_CHOICE:
          if (asn1_cb) {
              i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
              if (!i)
                  goto auxerr;
              if (i == 2) {
                  return 1;
              }
          }
          if (!combine) {
              *pval = OPENSSL_malloc(it->size);
              if (!*pval)
                  goto memerr;
              OPENSSL_memset(*pval, 0, it->size);
          }
          asn1_set_choice_selector(pval, -1, it);
          if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
              goto auxerr2;
          break;
  
      case ASN1_ITYPE_SEQUENCE:
          if (asn1_cb) {
              i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
              if (!i)
                  goto auxerr;
              if (i == 2) {
                  return 1;
              }
          }
          if (!combine) {
              *pval = OPENSSL_malloc(it->size);
              if (!*pval)
                  goto memerr;
              OPENSSL_memset(*pval, 0, it->size);
              asn1_refcount_set_one(pval, it);
              asn1_enc_init(pval, it);
          }
          for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
              pseqval = asn1_get_field_ptr(pval, tt);
              if (!ASN1_template_new(pseqval, tt))
                  goto memerr2;
          }
          if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
              goto auxerr2;
          break;
      }
      return 1;
  
   memerr2:
      asn1_item_combine_free(pval, it, combine);
   memerr:
      OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
      return 0;
  
   auxerr2:
      asn1_item_combine_free(pval, it, combine);
   auxerr:
      OPENSSL_PUT_ERROR(ASN1, ASN1_R_AUX_ERROR);
      return 0;
  
  }
  
  static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
  {
      const ASN1_EXTERN_FUNCS *ef;
  
      switch (it->itype) {
  
      case ASN1_ITYPE_EXTERN:
          ef = it->funcs;
          if (ef && ef->asn1_ex_clear)
              ef->asn1_ex_clear(pval, it);
          else
              *pval = NULL;
          break;
  
      case ASN1_ITYPE_PRIMITIVE:
          if (it->templates)
              asn1_template_clear(pval, it->templates);
          else
              asn1_primitive_clear(pval, it);
          break;
  
      case ASN1_ITYPE_MSTRING:
          asn1_primitive_clear(pval, it);
          break;
  
      case ASN1_ITYPE_CHOICE:
      case ASN1_ITYPE_SEQUENCE:
          *pval = NULL;
          break;
      }
  }
  
  static int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
  {
      const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
      int ret;
      if (tt->flags & ASN1_TFLG_OPTIONAL) {
          asn1_template_clear(pval, tt);
          return 1;
      }
      /* If ANY DEFINED BY nothing to do */
  
      if (tt->flags & ASN1_TFLG_ADB_MASK) {
          *pval = NULL;
          return 1;
      }
      /* If SET OF or SEQUENCE OF, its a STACK */
      if (tt->flags & ASN1_TFLG_SK_MASK) {
          STACK_OF(ASN1_VALUE) *skval;
          skval = sk_ASN1_VALUE_new_null();
          if (!skval) {
              OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
              ret = 0;
              goto done;
          }
          *pval = (ASN1_VALUE *)skval;
          ret = 1;
          goto done;
      }
      /* Otherwise pass it back to the item routine */
      ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE);
   done:
      return ret;
  }
  
  static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
  {
      /* If ADB or STACK just NULL the field */
      if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))
          *pval = NULL;
      else
          asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
  }
  
  /*
   * NB: could probably combine most of the real XXX_new() behaviour and junk
   * all the old functions.
   */
  
  static int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
  {
      ASN1_TYPE *typ;
      ASN1_STRING *str;
      int utype;
  
      if (!it)
          return 0;
  
      /* Historically, |it->funcs| for primitive types contained an
       * |ASN1_PRIMITIVE_FUNCS| table of calbacks. */
      assert(it->funcs == NULL);
  
      if (it->itype == ASN1_ITYPE_MSTRING)
          utype = -1;
      else
          utype = it->utype;
      switch (utype) {
      case V_ASN1_OBJECT:
          *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
          return 1;
  
      case V_ASN1_BOOLEAN:
          *(ASN1_BOOLEAN *)pval = it->size;
          return 1;
  
      case V_ASN1_NULL:
          *pval = (ASN1_VALUE *)1;
          return 1;
  
      case V_ASN1_ANY:
          typ = OPENSSL_malloc(sizeof(ASN1_TYPE));
          if (!typ)
              return 0;
          typ->value.ptr = NULL;
          typ->type = -1;
          *pval = (ASN1_VALUE *)typ;
          break;
  
      default:
          str = ASN1_STRING_type_new(utype);
          if (it->itype == ASN1_ITYPE_MSTRING && str)
              str->flags |= ASN1_STRING_FLAG_MSTRING;
          *pval = (ASN1_VALUE *)str;
          break;
      }
      if (*pval)
          return 1;
      return 0;
  }
  
  static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
  {
      int utype;
      /* Historically, |it->funcs| for primitive types contained an
       * |ASN1_PRIMITIVE_FUNCS| table of calbacks. */
      assert(it == NULL || it->funcs == NULL);
      if (!it || (it->itype == ASN1_ITYPE_MSTRING))
          utype = -1;
      else
          utype = it->utype;
      if (utype == V_ASN1_BOOLEAN)
          *(ASN1_BOOLEAN *)pval = it->size;
      else
          *pval = NULL;
  }
  