/* 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>

 EXPORT_C 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));

 	}

 EXPORT_C 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);

 	}

 EXPORT_C int X509_NAME_entry_count(X509_NAME *name)

 	{

 	if (name == NULL) return(0);

 	return(sk_X509_NAME_ENTRY_num(name->entries));

 	}

 EXPORT_C 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 */

 EXPORT_C 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);

 	}

 EXPORT_C 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));

 	}

 EXPORT_C 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);

 	}

 EXPORT_C 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;

 }

 EXPORT_C 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;

 }

 EXPORT_C 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. */

 EXPORT_C 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);

 	}

 EXPORT_C 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)

 		{

 		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;

 	}

 EXPORT_C 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;

 	}

 EXPORT_C X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,

 	     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);

 	}

 EXPORT_C 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);

 	}

 EXPORT_C 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((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);

 	}

 EXPORT_C ASN1_OBJECT *X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne)

 	{

 	if (ne == NULL) return(NULL);

 	return(ne->object);

 	}

 EXPORT_C ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne)

 	{

 	if (ne == NULL) return(NULL);

 	return(ne->value);

 	}