/* v3_pci.c -*- mode:C; c-file-style: "eay" -*- */

/* Contributed to the OpenSSL Project 2004

 * by Richard Levitte (richard@levitte.org)

 */

/* Copyright (c) 2004 Kungliga Tekniska Högskolan

 * (Royal Institute of Technology, Stockholm, Sweden).

 * 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. Neither the name of the Institute nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE 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.

 */

/*

 © 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 int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext,

	BIO *out, int indent);

static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,

	X509V3_CTX *ctx, char *str);

#ifndef EMULATOR

X509V3_EXT_METHOD v3_pci =

	{ NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),

	  0,0,0,0,

	  0,0,

	  NULL, NULL,

	  (X509V3_EXT_I2R)i2r_pci,

	  (X509V3_EXT_R2I)r2i_pci,

	  NULL,

	};

#else

const X509V3_EXT_METHOD v3_pci =

	{ NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),

	  0,0,0,0,

	  0,0,

	  NULL, NULL,

	  (X509V3_EXT_I2R)i2r_pci,

	  (X509V3_EXT_R2I)r2i_pci,

	  NULL,

	};

#endif

static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci,

	BIO *out, int indent)

	{

	BIO_printf(out, "%*sPath Length Constraint: ", indent, "");

	if (pci->pcPathLengthConstraint)

	  i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint);

	else

	  BIO_printf(out, "infinite");

	BIO_puts(out, "\n");

	BIO_printf(out, "%*sPolicy Language: ", indent, "");

	i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);

	BIO_puts(out, "\n");

	if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)

	  BIO_printf(out, "%*sPolicy Text: %s\n", indent, "",

		     pci->proxyPolicy->policy->data);

	return 1;

	}

static int process_pci_value(CONF_VALUE *val,

	ASN1_OBJECT **language, ASN1_INTEGER **pathlen,

	ASN1_OCTET_STRING **policy)

	{

	int free_policy = 0;

	if (strcmp(val->name, "language") == 0)

		{

		if (*language)

			{

			X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_POLICY_LANGUAGE_ALREADTY_DEFINED);

			X509V3_conf_err(val);

			return 0;

			}

		if (!(*language = OBJ_txt2obj(val->value, 0)))

			{

			X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_INVALID_OBJECT_IDENTIFIER);

			X509V3_conf_err(val);

			return 0;

			}

		}

	else if (strcmp(val->name, "pathlen") == 0)

		{

		if (*pathlen)

			{

			X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_POLICY_PATH_LENGTH_ALREADTY_DEFINED);

			X509V3_conf_err(val);

			return 0;

			}

		if (!X509V3_get_value_int(val, pathlen))

			{

			X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_POLICY_PATH_LENGTH);

			X509V3_conf_err(val);

			return 0;

			}

		}

	else if (strcmp(val->name, "policy") == 0)

		{

		unsigned char *tmp_data = NULL;

		long val_len;

		if (!*policy)

			{

			*policy = ASN1_OCTET_STRING_new();

			if (!*policy)

				{

				X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE);

				X509V3_conf_err(val);

				return 0;

				}

			free_policy = 1;

			}

		if (strncmp(val->value, "hex:", 4) == 0)

			{

			unsigned char *tmp_data2 =

				string_to_hex(val->value + 4, &val_len);

			if (!tmp_data2) goto err;

			tmp_data = OPENSSL_realloc((*policy)->data,

				(*policy)->length + val_len + 1);

			if (tmp_data)

				{

				(*policy)->data = tmp_data;

				memcpy(&(*policy)->data[(*policy)->length],

					tmp_data2, val_len);

				(*policy)->length += val_len;

				(*policy)->data[(*policy)->length] = '\0';

				}

			}

		else if (strncmp(val->value, "file:", 5) == 0)

			{

#ifndef SYMBIAN			

			unsigned char buf[2048];

#else

      unsigned char buf[1024];

#endif			

			int n;

			BIO *b = BIO_new_file(val->value + 5, "r");

			if (!b)

				{

				X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_BIO_LIB);

				X509V3_conf_err(val);

				goto err;

				}

			while((n = BIO_read(b, buf, sizeof(buf))) > 0

				|| (n == 0 && BIO_should_retry(b)))

				{

				if (!n) continue;

				tmp_data = OPENSSL_realloc((*policy)->data,

					(*policy)->length + n + 1);

				if (!tmp_data)

					break;

				(*policy)->data = tmp_data;

				memcpy(&(*policy)->data[(*policy)->length],

					buf, n);

				(*policy)->length += n;

				(*policy)->data[(*policy)->length] = '\0';

				}

			if (n < 0)

				{

				X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_BIO_LIB);

				X509V3_conf_err(val);

				goto err;

				}

			}

		else if (strncmp(val->value, "text:", 5) == 0)

			{

			val_len = strlen(val->value + 5);

			tmp_data = OPENSSL_realloc((*policy)->data,

				(*policy)->length + val_len + 1);

			if (tmp_data)

				{

				(*policy)->data = tmp_data;

				memcpy(&(*policy)->data[(*policy)->length],

					val->value + 5, val_len);

				(*policy)->length += val_len;

				(*policy)->data[(*policy)->length] = '\0';

				}

			}

		else

			{

			X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);

			X509V3_conf_err(val);

			goto err;

			}

		if (!tmp_data)

			{

			X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE);

			X509V3_conf_err(val);

			goto err;

			}

		}

	return 1;

err:

	if (free_policy)

		{

		ASN1_OCTET_STRING_free(*policy);

		*policy = NULL;

		}

	return 0;

	}

static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,

	X509V3_CTX *ctx, char *value)

	{

	PROXY_CERT_INFO_EXTENSION *pci = NULL;

	STACK_OF(CONF_VALUE) *vals;

	ASN1_OBJECT *language = NULL;

	ASN1_INTEGER *pathlen = NULL;

	ASN1_OCTET_STRING *policy = NULL;

	int i, j;

	vals = X509V3_parse_list(value);

	for (i = 0; i < sk_CONF_VALUE_num(vals); i++)

		{

		CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);

		if (!cnf->name || (*cnf->name != '@' && !cnf->value))

			{

			X509V3err(X509V3_F_R2I_PCI,X509V3_R_INVALID_PROXY_POLICY_SETTING);

			X509V3_conf_err(cnf);

			goto err;

			}

		if (*cnf->name == '@')

			{

			STACK_OF(CONF_VALUE) *sect;

			int success_p = 1;

			sect = X509V3_get_section(ctx, cnf->name + 1);

			if (!sect)

				{

				X509V3err(X509V3_F_R2I_PCI,X509V3_R_INVALID_SECTION);

				X509V3_conf_err(cnf);

				goto err;

				}

			for (j = 0; success_p && j < sk_CONF_VALUE_num(sect); j++)

				{

				success_p =

					process_pci_value(sk_CONF_VALUE_value(sect, j),

						&language, &pathlen, &policy);

				}

			X509V3_section_free(ctx, sect);

			if (!success_p)

				goto err;

			}

		else

			{

			if (!process_pci_value(cnf,

					&language, &pathlen, &policy))

				{

				X509V3_conf_err(cnf);

				goto err;

				}

			}

		}

	/* Language is mandatory */

	if (!language)

		{

		X509V3err(X509V3_F_R2I_PCI,X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);

		goto err;

		}

	i = OBJ_obj2nid(language);

	if ((i == NID_Independent || i == NID_id_ppl_inheritAll) && policy)

		{

		X509V3err(X509V3_F_R2I_PCI,X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);

		goto err;

		}

	pci = PROXY_CERT_INFO_EXTENSION_new();

	if (!pci)

		{

		X509V3err(X509V3_F_R2I_PCI,ERR_R_MALLOC_FAILURE);

		goto err;

		}

	pci->proxyPolicy->policyLanguage = language; language = NULL;

	pci->proxyPolicy->policy = policy; policy = NULL;

	pci->pcPathLengthConstraint = pathlen; pathlen = NULL;

	goto end;

err:

	if (language) { ASN1_OBJECT_free(language); language = NULL; }

	if (pathlen) { ASN1_INTEGER_free(pathlen); pathlen = NULL; }

	if (policy) { ASN1_OCTET_STRING_free(policy); policy = NULL; }

	if (pci) { PROXY_CERT_INFO_EXTENSION_free(pci); pci = NULL; }

end:

	sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);

	return pci;

	}