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x509name.c

/* crypto/x509/x509name.c */
/* 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 <stdio.h>
#include <openssl/stack.h>
#include "cryptlib.h"
#include <openssl/asn1.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>

int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
      {
      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(X509_NAME *name, 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);
      memcpy(buf,data->data,i);
      buf[i]='\0';
      return(i);
      }

int X509_NAME_entry_count(X509_NAME *name)
      {
      if (name == NULL) return(0);
      return(sk_X509_NAME_ENTRY_num(name->entries));
      }

int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
      {
      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(X509_NAME *name, 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(X509_NAME *name, int loc)
      {
      if(name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
         || loc < 0)
            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 || sk_X509_NAME_ENTRY_num(name->entries) <= loc
          || loc < 0)
            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,
                  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,
                  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, char *field, int type,
                  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;

      name->modified=1;

      if (set == -1)
            {
            if (loc == 0)
                  {
                  set=0;
                  inc=1;
                  }
            else
                  {
                  set=sk_X509_NAME_ENTRY_value(sk,loc-1)->set;
                  inc=0;
                  }
            }
      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;
            inc=(set == 0)?1:0;
            }

      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))
            {
            X509err(X509_F_X509_NAME_ADD_ENTRY,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-1)->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,
            char *field, int type, unsigned char *bytes, int len)
      {
      ASN1_OBJECT *obj;
      X509_NAME_ENTRY *nentry;

      obj=OBJ_txt2obj(field, 0);
      if (obj == NULL)
            {
            X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_TXT,
                                    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, unsigned char *bytes, int len)
      {
      ASN1_OBJECT *obj;
      X509_NAME_ENTRY *nentry;

      obj=OBJ_nid2obj(nid);
      if (obj == NULL)
            {
            X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_NID,X509_R_UNKNOWN_NID);
            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_OBJ(X509_NAME_ENTRY **ne,
           ASN1_OBJECT *obj, int type, 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, ASN1_OBJECT *obj)
      {
      if ((ne == NULL) || (obj == NULL))
            {
            X509err(X509_F_X509_NAME_ENTRY_SET_OBJECT,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,
           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((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(X509_NAME_ENTRY *ne)
      {
      if (ne == NULL) return(NULL);
      return(ne->object);
      }

ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne)
      {
      if (ne == NULL) return(NULL);
      return(ne->value);
      }


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