/* 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;

 	}