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| Current File : //usr/src/crypto/openssl/crypto/x509v3/v3_pci.c |
/* 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.
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/x509v3.h>
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);
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,
};
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)
{
X509V3err(X509V3_F_PROCESS_PCI_VALUE,X509V3_R_ILLEGAL_HEX_DIGIT);
X509V3_conf_err(val);
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
{
OPENSSL_free(tmp_data2);
/* realloc failure implies the original data space is b0rked too! */
(*policy)->data = NULL;
(*policy)->length = 0;
X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE);
X509V3_conf_err(val);
goto err;
}
OPENSSL_free(tmp_data2);
}
else if (strncmp(val->value, "file:", 5) == 0)
{
unsigned char buf[2048];
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';
}
BIO_free_all(b);
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
{
/* realloc failure implies the original data space is b0rked too! */
(*policy)->data = NULL;
(*policy)->length = 0;
X509V3err(X509V3_F_PROCESS_PCI_VALUE,ERR_R_MALLOC_FAILURE);
X509V3_conf_err(val);
goto err;
}
}
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;
}