ref: bfe9da47cfa2f51ebef78c59332b5ba2deba306d
dir: /third_party/boringssl/src/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 <string.h>
#include <openssl/conf.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include <openssl/x509v3.h>
#include "../internal.h"
#include "internal.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->length,
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) {
OPENSSL_PUT_ERROR(X509V3,
X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED);
X509V3_conf_err(val);
return 0;
}
if (!(*language = OBJ_txt2obj(val->value, 0))) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
X509V3_conf_err(val);
return 0;
}
} else if (strcmp(val->name, "pathlen") == 0) {
if (*pathlen) {
OPENSSL_PUT_ERROR(X509V3,
X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED);
X509V3_conf_err(val);
return 0;
}
if (!X509V3_get_value_int(val, pathlen)) {
OPENSSL_PUT_ERROR(X509V3, 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) {
OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
X509V3_conf_err(val);
return 0;
}
free_policy = 1;
}
if (strncmp(val->value, "hex:", 4) == 0) {
unsigned char *tmp_data2 =
x509v3_hex_to_bytes(val->value + 4, &val_len);
if (!tmp_data2) {
OPENSSL_PUT_ERROR(X509V3, 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;
OPENSSL_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;
OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
X509V3_conf_err(val);
goto err;
}
OPENSSL_free(tmp_data2);
} 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;
OPENSSL_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;
OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
X509V3_conf_err(val);
goto err;
}
} else {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
X509V3_conf_err(val);
goto err;
}
if (!tmp_data) {
OPENSSL_PUT_ERROR(X509V3, 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;
size_t i, j;
int nid;
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)) {
OPENSSL_PUT_ERROR(X509V3, 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) {
OPENSSL_PUT_ERROR(X509V3, 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) {
OPENSSL_PUT_ERROR(X509V3,
X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);
goto err;
}
nid = OBJ_obj2nid(language);
if ((nid == NID_Independent || nid == NID_id_ppl_inheritAll) && policy) {
OPENSSL_PUT_ERROR(X509V3,
X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);
goto err;
}
pci = PROXY_CERT_INFO_EXTENSION_new();
if (!pci) {
OPENSSL_PUT_ERROR(X509V3, 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;
}