/* v3_alt.c */

/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL

 * project.

 */

/* ====================================================================

 * Copyright (c) 1999-2003 The OpenSSL Project.  All rights reserved.

 *

 * 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 above 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 acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

 *

 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    licensing@OpenSSL.org.

 *

 * 5. Products derived from this software may not be called "OpenSSL"

 *    nor may "OpenSSL" appear in their names without prior written

 *    permission of the OpenSSL Project.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

 *

 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

 * EXPRESSED 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 OpenSSL PROJECT OR

 * ITS 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.

 * ====================================================================

 *

 * This product includes cryptographic software written by Eric Young

 * (eay@cryptsoft.com).  This product includes software written by Tim

 * Hudson (tjh@cryptsoft.com).

 *

 */

 /*

 © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 */

#include <stdio.h>

#include "cryptlib.h"

#include <openssl/conf.h>

#include <openssl/x509v3.h>

#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

#include "libcrypto_wsd_macros.h"

#include "libcrypto_wsd.h"

#endif

static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);

static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);

static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);

static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);

static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);

static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);

#ifndef EMULATOR

X509V3_EXT_METHOD v3_alt[] = {

{ NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),

0,0,0,0,

0,0,

(X509V3_EXT_I2V)i2v_GENERAL_NAMES,

(X509V3_EXT_V2I)v2i_subject_alt,

NULL, NULL, NULL},

{ NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),

0,0,0,0,

0,0,

(X509V3_EXT_I2V)i2v_GENERAL_NAMES,

(X509V3_EXT_V2I)v2i_issuer_alt,

NULL, NULL, NULL},

};

#else

const X509V3_EXT_METHOD v3_alt[] = {

{ NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),

0,0,0,0,

0,0,

(X509V3_EXT_I2V)i2v_GENERAL_NAMES,

(X509V3_EXT_V2I)v2i_subject_alt,

NULL, NULL, NULL},

{ NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),

0,0,0,0,

0,0,

(X509V3_EXT_I2V)i2v_GENERAL_NAMES,

(X509V3_EXT_V2I)v2i_issuer_alt,

NULL, NULL, NULL},

};

#endif

EXPORT_C STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,

		GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret)

{

	int i;

	GENERAL_NAME *gen;

	for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) {

		gen = sk_GENERAL_NAME_value(gens, i);

		ret = i2v_GENERAL_NAME(method, gen, ret);

	}

	if(!ret) return sk_CONF_VALUE_new_null();

	return ret;

}

EXPORT_C STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,

				GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret)

{

	unsigned char *p;

	char oline[256], htmp[5];

	int i;

	switch (gen->type)

	{

		case GEN_OTHERNAME:

		X509V3_add_value("othername","<unsupported>", &ret);

		break;

		case GEN_X400:

		X509V3_add_value("X400Name","<unsupported>", &ret);

		break;

		case GEN_EDIPARTY:

		X509V3_add_value("EdiPartyName","<unsupported>", &ret);

		break;

		case GEN_EMAIL:

		X509V3_add_value_uchar("email",gen->d.ia5->data, &ret);

		break;

		case GEN_DNS:

		X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret);

		break;

		case GEN_URI:

		X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret);

		break;

		case GEN_DIRNAME:

		X509_NAME_oneline(gen->d.dirn, oline, 256);

		X509V3_add_value("DirName",oline, &ret);

		break;

		case GEN_IPADD:

		p = gen->d.ip->data;

		if(gen->d.ip->length == 4)

			BIO_snprintf(oline, sizeof oline,

				     "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);

		else if(gen->d.ip->length == 16)

			{

			oline[0] = 0;

			for (i = 0; i < 8; i++)

				{

				BIO_snprintf(htmp, sizeof htmp,

					     "%X", p[0] << 8 | p[1]);

				p += 2;

				strcat(oline, htmp);

				if (i != 7)

					strcat(oline, ":");

				}

			}

		else

			{

			X509V3_add_value("IP Address","<invalid>", &ret);

			break;

			}

		X509V3_add_value("IP Address",oline, &ret);

		break;

		case GEN_RID:

		i2t_ASN1_OBJECT(oline, 256, gen->d.rid);

		X509V3_add_value("Registered ID",oline, &ret);

		break;

	}

	return ret;

}

EXPORT_C int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)

{

	unsigned char *p;

	int i;

	switch (gen->type)

	{

		case GEN_OTHERNAME:

		BIO_printf(out, "othername:<unsupported>");

		break;

		case GEN_X400:

		BIO_printf(out, "X400Name:<unsupported>");

		break;

		case GEN_EDIPARTY:

		/* Maybe fix this: it is supported now */

		BIO_printf(out, "EdiPartyName:<unsupported>");

		break;

		case GEN_EMAIL:

		BIO_printf(out, "email:%s",gen->d.ia5->data);

		break;

		case GEN_DNS:

		BIO_printf(out, "DNS:%s",gen->d.ia5->data);

		break;

		case GEN_URI:

		BIO_printf(out, "URI:%s",gen->d.ia5->data);

		break;

		case GEN_DIRNAME:

		BIO_printf(out, "DirName: ");

		X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);

		break;

		case GEN_IPADD:

		p = gen->d.ip->data;

		if(gen->d.ip->length == 4)

			BIO_printf(out, "IP Address:%d.%d.%d.%d",

						p[0], p[1], p[2], p[3]);

		else if(gen->d.ip->length == 16)

			{

			BIO_printf(out, "IP Address");

			for (i = 0; i < 8; i++)

				{

				BIO_printf(out, ":%X", p[0] << 8 | p[1]);

				p += 2;

				}

			BIO_puts(out, "\n");

			}

		else

			{

			BIO_printf(out,"IP Address:<invalid>");

			break;

			}

		break;

		case GEN_RID:

		BIO_printf(out, "Registered ID");

		i2a_ASN1_OBJECT(out, gen->d.rid);

		break;

	}

	return 1;

}

static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,

				 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)

{

	GENERAL_NAMES *gens = NULL;

	CONF_VALUE *cnf;

	int i;

	if(!(gens = sk_GENERAL_NAME_new_null())) {

		X509V3err(X509V3_F_V2I_ISSUER_ALT,ERR_R_MALLOC_FAILURE);

		return NULL;

	}

	for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {

		cnf = sk_CONF_VALUE_value(nval, i);

		if(!name_cmp(cnf->name, "issuer") && cnf->value &&

						!strcmp(cnf->value, "copy")) {

			if(!copy_issuer(ctx, gens)) goto err;

		} else {

			GENERAL_NAME *gen;

			if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))

								 goto err; 

			sk_GENERAL_NAME_push(gens, gen);

		}

	}

	return gens;

	err:

	sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);

	return NULL;

}

/* Append subject altname of issuer to issuer alt name of subject */

static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)

{

	GENERAL_NAMES *ialt;

	GENERAL_NAME *gen;

	X509_EXTENSION *ext;

	int i;

	if(ctx && (ctx->flags == CTX_TEST)) return 1;

	if(!ctx || !ctx->issuer_cert) {

		X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);

		goto err;

	}

        i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);

	if(i < 0) return 1;

        if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||

                        !(ialt = X509V3_EXT_d2i(ext)) ) {

		X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);

		goto err;

	}

	for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {

		gen = sk_GENERAL_NAME_value(ialt, i);

		if(!sk_GENERAL_NAME_push(gens, gen)) {

			X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);

			goto err;

		}

	}

	sk_GENERAL_NAME_free(ialt);

	return 1;

	err:

	return 0;

}

static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,

				 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)

{

	GENERAL_NAMES *gens = NULL;

	CONF_VALUE *cnf;

	int i;

	if(!(gens = sk_GENERAL_NAME_new_null())) {

		X509V3err(X509V3_F_V2I_SUBJECT_ALT,ERR_R_MALLOC_FAILURE);

		return NULL;

	}

	for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {

		cnf = sk_CONF_VALUE_value(nval, i);

		if(!name_cmp(cnf->name, "email") && cnf->value &&

						!strcmp(cnf->value, "copy")) {

			if(!copy_email(ctx, gens, 0)) goto err;

		} else if(!name_cmp(cnf->name, "email") && cnf->value &&

						!strcmp(cnf->value, "move")) {

			if(!copy_email(ctx, gens, 1)) goto err;

		} else {

			GENERAL_NAME *gen;

			if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))

								 goto err; 

			sk_GENERAL_NAME_push(gens, gen);

		}

	}

	return gens;

	err:

	sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);

	return NULL;

}

/* Copy any email addresses in a certificate or request to 

 * GENERAL_NAMES

 */

static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)

{

	X509_NAME *nm;

	ASN1_IA5STRING *email = NULL;

	X509_NAME_ENTRY *ne;

	GENERAL_NAME *gen = NULL;

	int i;

	if(ctx != NULL && ctx->flags == CTX_TEST)

		return 1;

	if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {

		X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);

		goto err;

	}

	/* Find the subject name */

	if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);

	else nm = X509_REQ_get_subject_name(ctx->subject_req);

	/* Now add any email address(es) to STACK */

	i = -1;

	while((i = X509_NAME_get_index_by_NID(nm,

					 NID_pkcs9_emailAddress, i)) >= 0) {

		ne = X509_NAME_get_entry(nm, i);

		email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));

                if (move_p)

                        {

                        X509_NAME_delete_entry(nm, i);

                        i--;

                        }

		if(!email || !(gen = GENERAL_NAME_new())) {

			X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);

			goto err;

		}

		gen->d.ia5 = email;

		email = NULL;

		gen->type = GEN_EMAIL;

		if(!sk_GENERAL_NAME_push(gens, gen)) {

			X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);

			goto err;

		}

		gen = NULL;

	}

	return 1;

	err:

	GENERAL_NAME_free(gen);

	M_ASN1_IA5STRING_free(email);

	return 0;

}

EXPORT_C GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,

				X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)

{

	GENERAL_NAME *gen;

	GENERAL_NAMES *gens = NULL;

	CONF_VALUE *cnf;

	int i;

	if(!(gens = sk_GENERAL_NAME_new_null())) {

		X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);

		return NULL;

	}

	for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {

		cnf = sk_CONF_VALUE_value(nval, i);

		if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err; 

		sk_GENERAL_NAME_push(gens, gen);

	}

	return gens;

	err:

	sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);

	return NULL;

}

EXPORT_C GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,

							 CONF_VALUE *cnf)

	{

	return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);

	}

EXPORT_C GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,

				X509V3_EXT_METHOD *method, X509V3_CTX *ctx,

						 CONF_VALUE *cnf, int is_nc)

	{

	char is_string = 0;

	int type;

	GENERAL_NAME *gen = NULL;

	char *name, *value;

	name = cnf->name;

	value = cnf->value;

	if(!value)

		{

		X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_MISSING_VALUE);

		return NULL;

		}

	if (out)

		gen = out;

	else

		{

		gen = GENERAL_NAME_new();

		if(gen == NULL)

			{

			X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,ERR_R_MALLOC_FAILURE);

			return NULL;

			}

		}

	if(!name_cmp(name, "email"))

		{

		is_string = 1;

		type = GEN_EMAIL;

		}

	else if(!name_cmp(name, "URI"))

		{

		is_string = 1;

		type = GEN_URI;

		}

	else if(!name_cmp(name, "DNS"))

		{

		is_string = 1;

		type = GEN_DNS;

		}

	else if(!name_cmp(name, "RID"))

		{

		ASN1_OBJECT *obj;

		if(!(obj = OBJ_txt2obj(value,0)))

			{

			X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_BAD_OBJECT);

			ERR_add_error_data(2, "value=", value);

			goto err;

			}

		gen->d.rid = obj;

		type = GEN_RID;

		}

	else if(!name_cmp(name, "IP"))

		{

		if (is_nc)

			gen->d.ip = a2i_IPADDRESS_NC(value);

		else

			gen->d.ip = a2i_IPADDRESS(value);

		if(gen->d.ip == NULL)

			{

			X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_BAD_IP_ADDRESS);

			ERR_add_error_data(2, "value=", value);

			goto err;

			}

		type = GEN_IPADD;

		}

	else if(!name_cmp(name, "dirName"))

		{

		type = GEN_DIRNAME;

		if (!do_dirname(gen, value, ctx))

			{

			X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_DIRNAME_ERROR);

			goto err;

			}

		}

	else if(!name_cmp(name, "otherName"))

		{

		if (!do_othername(gen, value, ctx))

			{

			X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_OTHERNAME_ERROR);

			goto err;

			}

		type = GEN_OTHERNAME;

		}

	else

		{

		X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_UNSUPPORTED_OPTION);

		ERR_add_error_data(2, "name=", name);

		goto err;

		}

	if(is_string)

		{

		if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||

			      !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,

					       strlen(value)))

			{

			X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,ERR_R_MALLOC_FAILURE);

			goto err;

			}

		}

	gen->type = type;

	return gen;

	err:

	GENERAL_NAME_free(gen);

	return NULL;

	}

static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)

	{

	char *objtmp = NULL, *p;

	int objlen;

	if (!(p = strchr(value, ';')))

		return 0;

	if (!(gen->d.otherName = OTHERNAME_new()))

		return 0;

	/* Free this up because we will overwrite it.

	 * no need to free type_id because it is static

	 */

	ASN1_TYPE_free(gen->d.otherName->value);

	if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))

		return 0;

	objlen = p - value;

	objtmp = OPENSSL_malloc(objlen + 1);

#ifdef SYMBIAN

	if(objtmp==NULL)

	return 0;

#endif

	strncpy(objtmp, value, objlen);

	objtmp[objlen] = 0;

	gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);

	OPENSSL_free(objtmp);	

	if (!gen->d.otherName->type_id)

		return 0;

	return 1;

	}

static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)

	{

	int ret;

	STACK_OF(CONF_VALUE) *sk;

	X509_NAME *nm;

	if (!(nm = X509_NAME_new()))

		return 0;

	sk = X509V3_get_section(ctx, value);

	if (!sk)

		{

		X509V3err(X509V3_F_DO_DIRNAME,X509V3_R_SECTION_NOT_FOUND);

		ERR_add_error_data(2, "section=", value);

		X509_NAME_free(nm);

		return 0;

		}

	/* FIXME: should allow other character types... */

	ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC);

	if (!ret)

		X509_NAME_free(nm);

	gen->d.dirn = nm;

	return ret;

	}