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 <string.h>
  
  #include <CJWTKitBoringSSL_asn1.h>
  #include <CJWTKitBoringSSL_err.h>
  #include <CJWTKitBoringSSL_evp.h>
  #include <CJWTKitBoringSSL_obj.h>
  #include <CJWTKitBoringSSL_stack.h>
  #include <CJWTKitBoringSSL_x509.h>
  
  #include "../internal.h"
  
  
  int X509_NAME_get_text_by_NID(const X509_NAME *name, int nid, char *buf,
                                int len)
  {
      const ASN1_OBJECT *obj;
  
      obj = OBJ_nid2obj(nid);
      if (obj == NULL)
          return (-1);
      return (X509_NAME_get_text_by_OBJ(name, obj, buf, len));
  }
  
  int X509_NAME_get_text_by_OBJ(const X509_NAME *name, const ASN1_OBJECT *obj,
                                char *buf, int len)
  {
      int i;
      ASN1_STRING *data;
  
      i = X509_NAME_get_index_by_OBJ(name, obj, -1);
      if (i < 0)
          return (-1);
      data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
      i = (data->length > (len - 1)) ? (len - 1) : data->length;
      if (buf == NULL)
          return (data->length);
      OPENSSL_memcpy(buf, data->data, i);
      buf[i] = '\0';
      return (i);
  }
  
  int X509_NAME_entry_count(const X509_NAME *name)
  {
      if (name == NULL)
          return (0);
      return (sk_X509_NAME_ENTRY_num(name->entries));
  }
  
  int X509_NAME_get_index_by_NID(const X509_NAME *name, int nid, int lastpos)
  {
      const ASN1_OBJECT *obj;
  
      obj = OBJ_nid2obj(nid);
      if (obj == NULL)
          return (-2);
      return (X509_NAME_get_index_by_OBJ(name, obj, lastpos));
  }
  
  /* NOTE: you should be passsing -1, not 0 as lastpos */
  int X509_NAME_get_index_by_OBJ(const X509_NAME *name, const ASN1_OBJECT *obj,
                                 int lastpos)
  {
      int n;
      X509_NAME_ENTRY *ne;
      STACK_OF(X509_NAME_ENTRY) *sk;
  
      if (name == NULL)
          return (-1);
      if (lastpos < 0)
          lastpos = -1;
      sk = name->entries;
      n = sk_X509_NAME_ENTRY_num(sk);
      for (lastpos++; lastpos < n; lastpos++) {
          ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
          if (OBJ_cmp(ne->object, obj) == 0)
              return (lastpos);
      }
      return (-1);
  }
  
  X509_NAME_ENTRY *X509_NAME_get_entry(const X509_NAME *name, int loc)
  {
      if (name == NULL || loc < 0
          || sk_X509_NAME_ENTRY_num(name->entries) <= (size_t)loc)
          return (NULL);
      else
          return (sk_X509_NAME_ENTRY_value(name->entries, loc));
  }
  
  X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
  {
      X509_NAME_ENTRY *ret;
      int i, n, set_prev, set_next;
      STACK_OF(X509_NAME_ENTRY) *sk;
  
      if (name == NULL || loc < 0
          || sk_X509_NAME_ENTRY_num(name->entries) <= (size_t)loc)
          return (NULL);
      sk = name->entries;
      ret = sk_X509_NAME_ENTRY_delete(sk, loc);
      n = sk_X509_NAME_ENTRY_num(sk);
      name->modified = 1;
      if (loc == n)
          return (ret);
  
      /* else we need to fixup the set field */
      if (loc != 0)
          set_prev = (sk_X509_NAME_ENTRY_value(sk, loc - 1))->set;
      else
          set_prev = ret->set - 1;
      set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
  
      /*
       * set_prev is the previous set set is the current set set_next is the
       * following prev 1 1 1 1 1 1 1 1 set 1 1 2 2 next 1 1 2 2 2 2 3 2 so
       * basically only if prev and next differ by 2, then re-number down by 1
       */
      if (set_prev + 1 < set_next)
          for (i = loc; i < n; i++)
              sk_X509_NAME_ENTRY_value(sk, i)->set--;
      return (ret);
  }
  
  int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
                                 const unsigned char *bytes, int len, int loc,
                                 int set)
  {
      X509_NAME_ENTRY *ne;
      int ret;
      ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
      if (!ne)
          return 0;
      ret = X509_NAME_add_entry(name, ne, loc, set);
      X509_NAME_ENTRY_free(ne);
      return ret;
  }
  
  int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
                                 const unsigned char *bytes, int len, int loc,
                                 int set)
  {
      X509_NAME_ENTRY *ne;
      int ret;
      ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
      if (!ne)
          return 0;
      ret = X509_NAME_add_entry(name, ne, loc, set);
      X509_NAME_ENTRY_free(ne);
      return ret;
  }
  
  int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
                                 const unsigned char *bytes, int len, int loc,
                                 int set)
  {
      X509_NAME_ENTRY *ne;
      int ret;
      ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
      if (!ne)
          return 0;
      ret = X509_NAME_add_entry(name, ne, loc, set);
      X509_NAME_ENTRY_free(ne);
      return ret;
  }
  
  /*
   * if set is -1, append to previous set, 0 'a new one', and 1, prepend to the
   * guy we are about to stomp on.
   */
  int X509_NAME_add_entry(X509_NAME *name, X509_NAME_ENTRY *ne, int loc,
                          int set)
  {
      X509_NAME_ENTRY *new_name = NULL;
      int n, i, inc;
      STACK_OF(X509_NAME_ENTRY) *sk;
  
      if (name == NULL)
          return (0);
      sk = name->entries;
      n = sk_X509_NAME_ENTRY_num(sk);
      if (loc > n)
          loc = n;
      else if (loc < 0)
          loc = n;
  
      inc = (set == 0);
      name->modified = 1;
  
      if (set == -1) {
          if (loc == 0) {
              set = 0;
              inc = 1;
          } else {
              set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
          }
      } else {                    /* if (set >= 0) */
  
          if (loc >= n) {
              if (loc != 0)
                  set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
              else
                  set = 0;
          } else
              set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
      }
  
      if ((new_name = X509_NAME_ENTRY_dup(ne)) == NULL)
          goto err;
      new_name->set = set;
      if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
          OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
          goto err;
      }
      if (inc) {
          n = sk_X509_NAME_ENTRY_num(sk);
          for (i = loc + 1; i < n; i++)
              sk_X509_NAME_ENTRY_value(sk, i)->set += 1;
      }
      return (1);
   err:
      if (new_name != NULL)
          X509_NAME_ENTRY_free(new_name);
      return (0);
  }
  
  X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
                                                 const char *field, int type,
                                                 const unsigned char *bytes,
                                                 int len)
  {
      ASN1_OBJECT *obj;
      X509_NAME_ENTRY *nentry;
  
      obj = OBJ_txt2obj(field, 0);
      if (obj == NULL) {
          OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME);
          ERR_add_error_data(2, "name=", field);
          return (NULL);
      }
      nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
      ASN1_OBJECT_free(obj);
      return nentry;
  }
  
  X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
                                                 int type,
                                                 const unsigned char *bytes,
                                                 int len)
  {
      const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
      if (obj == NULL) {
          OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
          return NULL;
      }
      return X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
  }
  
  X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
                                                 const ASN1_OBJECT *obj,
                                                 int type,
                                                 const unsigned char *bytes,
                                                 int len)
  {
      X509_NAME_ENTRY *ret;
  
      if ((ne == NULL) || (*ne == NULL)) {
          if ((ret = X509_NAME_ENTRY_new()) == NULL)
              return (NULL);
      } else
          ret = *ne;
  
      if (!X509_NAME_ENTRY_set_object(ret, obj))
          goto err;
      if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len))
          goto err;
  
      if ((ne != NULL) && (*ne == NULL))
          *ne = ret;
      return (ret);
   err:
      if ((ne == NULL) || (ret != *ne))
          X509_NAME_ENTRY_free(ret);
      return (NULL);
  }
  
  int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj)
  {
      if ((ne == NULL) || (obj == NULL)) {
          OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
          return (0);
      }
      ASN1_OBJECT_free(ne->object);
      ne->object = OBJ_dup(obj);
      return ((ne->object == NULL) ? 0 : 1);
  }
  
  int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
                               const unsigned char *bytes, int len)
  {
      int i;
  
      if ((ne == NULL) || ((bytes == NULL) && (len != 0)))
          return (0);
      if ((type > 0) && (type & MBSTRING_FLAG))
          return ASN1_STRING_set_by_NID(&ne->value, bytes,
                                        len, type,
                                        OBJ_obj2nid(ne->object)) ? 1 : 0;
      if (len < 0)
          len = strlen((const char *)bytes);
      i = ASN1_STRING_set(ne->value, bytes, len);
      if (!i)
          return (0);
      if (type != V_ASN1_UNDEF) {
          if (type == V_ASN1_APP_CHOOSE)
              ne->value->type = ASN1_PRINTABLE_type(bytes, len);
          else
              ne->value->type = type;
      }
      return (1);
  }
  
  ASN1_OBJECT *X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY *ne)
  {
      if (ne == NULL)
          return (NULL);
      return (ne->object);
  }
  
  ASN1_STRING *X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY *ne)
  {
      if (ne == NULL)
          return (NULL);
      return (ne->value);
  }
  