/* crypto/asn1/x_name.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 "cryptlib.h"#include <openssl/asn1t.h>#include <openssl/x509.h>static int x509_name_ex_d2i(ASN1_VALUE **val, unsigned char **in, long len, const ASN1_ITEM *it,					int tag, int aclass, char opt, ASN1_TLC *ctx);static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it);static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it);static int x509_name_encode(X509_NAME *a);ASN1_SEQUENCE(X509_NAME_ENTRY) = {	ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT),	ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE)} ASN1_SEQUENCE_END(X509_NAME_ENTRY)IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY)IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME_ENTRY)/* For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY } * so declare two template wrappers for this */ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) =	ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY)ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES)ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) =	ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES)ASN1_ITEM_TEMPLATE_END(X509_NAME_INTERNAL)/* Normally that's where it would end: we'd have two nested STACK structures * representing the ASN1. Unfortunately X509_NAME uses a completely different * form and caches encodings so we have to process the internal form and convert * to the external form. */const ASN1_EXTERN_FUNCS x509_name_ff = {	NULL,	x509_name_ex_new,	x509_name_ex_free,	0,	/* Default clear behaviour is OK */	x509_name_ex_d2i,	x509_name_ex_i2d};IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff) IMPLEMENT_ASN1_FUNCTIONS(X509_NAME)IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME)static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it){	X509_NAME *ret = NULL;	ret = OPENSSL_malloc(sizeof(X509_NAME));	if(!ret) goto memerr;	if ((ret->entries=sk_X509_NAME_ENTRY_new_null()) == NULL)		goto memerr;	if((ret->bytes = BUF_MEM_new()) == NULL) goto memerr;	ret->modified=1;	*val = (ASN1_VALUE *)ret;	return 1; memerr:	ASN1err(ASN1_F_X509_NAME_NEW, ERR_R_MALLOC_FAILURE);	if (ret)		{		if (ret->entries)			sk_X509_NAME_ENTRY_free(ret->entries);		OPENSSL_free(ret);		}	return 0;}static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it){	X509_NAME *a;	if(!pval || !*pval)	    return;	a = (X509_NAME *)*pval;	BUF_MEM_free(a->bytes);	sk_X509_NAME_ENTRY_pop_free(a->entries,X509_NAME_ENTRY_free);	OPENSSL_free(a);	*pval = NULL;}/* Used with sk_pop_free() to free up the internal representation. * NB: we only free the STACK and not its contents because it is * already present in the X509_NAME structure. */static void sk_internal_free(void *a){	sk_free(a);}static int x509_name_ex_d2i(ASN1_VALUE **val, unsigned char **in, long len, const ASN1_ITEM *it,					int tag, int aclass, char opt, ASN1_TLC *ctx){	unsigned char *p = *in, *q;	STACK *intname = NULL, **intname_pp = &intname;	int i, j, ret;	X509_NAME *nm = NULL, **nm_pp = &nm;	STACK_OF(X509_NAME_ENTRY) *entries;	X509_NAME_ENTRY *entry;	q = p;	/* Get internal representation of Name */	ret = ASN1_item_ex_d2i((ASN1_VALUE **)intname_pp,			       &p, len, ASN1_ITEM_rptr(X509_NAME_INTERNAL),			       tag, aclass, opt, ctx);		if(ret <= 0) return ret;	if(*val) x509_name_ex_free(val, NULL);	if(!x509_name_ex_new((ASN1_VALUE **)nm_pp, NULL)) goto err;	/* We've decoded it: now cache encoding */	if(!BUF_MEM_grow(nm->bytes, p - q)) goto err;	memcpy(nm->bytes->data, q, p - q);	/* Convert internal representation to X509_NAME structure */	for(i = 0; i < sk_num(intname); i++) {		entries = (STACK_OF(X509_NAME_ENTRY) *)sk_value(intname, i);		for(j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) {			entry = sk_X509_NAME_ENTRY_value(entries, j);			entry->set = i;			if(!sk_X509_NAME_ENTRY_push(nm->entries, entry))				goto err;		}		sk_X509_NAME_ENTRY_free(entries);	}	sk_free(intname);	nm->modified = 0;	*val = (ASN1_VALUE *)nm;	*in = p;	return ret;	err:	ASN1err(ASN1_F_D2I_X509_NAME, ERR_R_NESTED_ASN1_ERROR);	return 0;}static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass){	int ret;	X509_NAME *a = (X509_NAME *)*val;	if(a->modified) {		ret = x509_name_encode((X509_NAME *)a);		if(ret < 0) return ret;	}	ret = a->bytes->length;	if(out != NULL) {		memcpy(*out,a->bytes->data,ret);		*out+=ret;	}	return ret;}static int x509_name_encode(X509_NAME *a){	STACK *intname = NULL, **intname_pp = &intname;	int len;	unsigned char *p;	STACK_OF(X509_NAME_ENTRY) *entries = NULL;	X509_NAME_ENTRY *entry;	int i, set = -1;	intname = sk_new_null();	if(!intname) goto memerr;	for(i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {		entry = sk_X509_NAME_ENTRY_value(a->entries, i);		if(entry->set != set) {			entries = sk_X509_NAME_ENTRY_new_null();			if(!entries) goto memerr;			if(!sk_push(intname, (char *)entries)) goto memerr;			set = entry->set;		}		if(!sk_X509_NAME_ENTRY_push(entries, entry)) goto memerr;	}	len = ASN1_item_ex_i2d((ASN1_VALUE **)intname_pp, NULL,			       ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);	if (!BUF_MEM_grow(a->bytes,len)) goto memerr;	p=(unsigned char *)a->bytes->data;	ASN1_item_ex_i2d((ASN1_VALUE **)intname_pp,			 &p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);	sk_pop_free(intname, sk_internal_free);	a->modified = 0;	return len;	memerr:	sk_pop_free(intname, sk_internal_free);	ASN1err(ASN1_F_D2I_X509_NAME, ERR_R_MALLOC_FAILURE);	return -1;}int X509_NAME_set(X509_NAME **xn, X509_NAME *name)	{	X509_NAME *in;	if (!xn || !name) return(0);	if (*xn != name)		{		in=X509_NAME_dup(name);		if (in != NULL)			{			X509_NAME_free(*xn);			*xn=in;			}		}	return(*xn != NULL);	}	IMPLEMENT_STACK_OF(X509_NAME_ENTRY)IMPLEMENT_ASN1_SET_OF(X509_NAME_ENTRY)