GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/x509v3/v3_pci.c Lines: 0 164 0.0 %
Date: 2017-11-13 Branches: 0 92 0.0 %

Line Branch Exec Source
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/* $OpenBSD: v3_pci.c,v 1.13 2017/05/02 04:11:08 deraadt Exp $ */
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/* Contributed to the OpenSSL Project 2004
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 * by Richard Levitte (richard@levitte.org)
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 */
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/* Copyright (c) 2004 Kungliga Tekniska Högskolan
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 * (Royal Institute of Technology, Stockholm, Sweden).
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * 3. Neither the name of the Institute nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <stdio.h>
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#include <string.h>
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#include <openssl/conf.h>
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#include <openssl/err.h>
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#include <openssl/x509v3.h>
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static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext,
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    BIO *out, int indent);
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static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
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    X509V3_CTX *ctx, char *str);
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const X509V3_EXT_METHOD v3_pci = {
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	.ext_nid = NID_proxyCertInfo,
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	.ext_flags = 0,
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	.it = &PROXY_CERT_INFO_EXTENSION_it,
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	.ext_new = NULL,
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	.ext_free = NULL,
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	.d2i = NULL,
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	.i2d = NULL,
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	.i2s = NULL,
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	.s2i = NULL,
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	.i2v = NULL,
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	.v2i = NULL,
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	.i2r = (X509V3_EXT_I2R)i2r_pci,
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	.r2i = (X509V3_EXT_R2I)r2i_pci,
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	.usr_data = NULL,
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};
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66
static int
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i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci, BIO *out,
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    int indent)
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{
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	BIO_printf(out, "%*sPath Length Constraint: ", indent, "");
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	if (pci->pcPathLengthConstraint)
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		i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint);
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	else
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		BIO_printf(out, "infinite");
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	BIO_puts(out, "\n");
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	BIO_printf(out, "%*sPolicy Language: ", indent, "");
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	i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);
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	BIO_puts(out, "\n");
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	if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)
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		BIO_printf(out, "%*sPolicy Text: %s\n", indent, "",
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		    pci->proxyPolicy->policy->data);
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	return 1;
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}
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85
static int
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process_pci_value(CONF_VALUE *val, ASN1_OBJECT **language,
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    ASN1_INTEGER **pathlen, ASN1_OCTET_STRING **policy)
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{
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	int free_policy = 0;
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	if (strcmp(val->name, "language") == 0) {
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		if (*language) {
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			X509V3error(X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED);
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			X509V3_conf_err(val);
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			return 0;
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		}
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		if (!(*language = OBJ_txt2obj(val->value, 0))) {
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			X509V3error(X509V3_R_INVALID_OBJECT_IDENTIFIER);
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			X509V3_conf_err(val);
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			return 0;
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		}
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	}
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	else if (strcmp(val->name, "pathlen") == 0) {
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		if (*pathlen) {
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			X509V3error(X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED);
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			X509V3_conf_err(val);
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			return 0;
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		}
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		if (!X509V3_get_value_int(val, pathlen)) {
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			X509V3error(X509V3_R_POLICY_PATH_LENGTH);
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			X509V3_conf_err(val);
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			return 0;
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		}
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	}
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	else if (strcmp(val->name, "policy") == 0) {
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		unsigned char *tmp_data = NULL;
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		long val_len;
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		if (!*policy) {
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			*policy = ASN1_OCTET_STRING_new();
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			if (!*policy) {
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				X509V3error(ERR_R_MALLOC_FAILURE);
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				X509V3_conf_err(val);
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				return 0;
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			}
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			free_policy = 1;
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		}
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		if (strncmp(val->value, "hex:", 4) == 0) {
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			unsigned char *tmp_data2 =
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			    string_to_hex(val->value + 4, &val_len);
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131
			if (!tmp_data2) {
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				X509V3error(X509V3_R_ILLEGAL_HEX_DIGIT);
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				X509V3_conf_err(val);
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				goto err;
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			}
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			tmp_data = realloc((*policy)->data,
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			    (*policy)->length + val_len + 1);
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			if (tmp_data) {
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				(*policy)->data = tmp_data;
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				memcpy(&(*policy)->data[(*policy)->length],
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				    tmp_data2, val_len);
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				(*policy)->length += val_len;
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				(*policy)->data[(*policy)->length] = '\0';
145
			} else {
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				free(tmp_data2);
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				free((*policy)->data);
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				(*policy)->data = NULL;
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				(*policy)->length = 0;
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				X509V3error(ERR_R_MALLOC_FAILURE);
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				X509V3_conf_err(val);
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				goto err;
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			}
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			free(tmp_data2);
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		}
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		else if (strncmp(val->value, "file:", 5) == 0) {
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			unsigned char buf[2048];
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			int n;
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			BIO *b = BIO_new_file(val->value + 5, "r");
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			if (!b) {
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				X509V3error(ERR_R_BIO_LIB);
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				X509V3_conf_err(val);
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				goto err;
164
			}
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			while ((n = BIO_read(b, buf, sizeof(buf))) > 0 ||
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			    (n == 0 && BIO_should_retry(b))) {
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				if (!n)
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					continue;
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				tmp_data = realloc((*policy)->data,
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				    (*policy)->length + n + 1);
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173
				if (!tmp_data)
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					break;
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				(*policy)->data = tmp_data;
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				memcpy(&(*policy)->data[(*policy)->length],
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				    buf, n);
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				(*policy)->length += n;
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				(*policy)->data[(*policy)->length] = '\0';
181
			}
182
			BIO_free_all(b);
183
184
			if (n < 0) {
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				X509V3error(ERR_R_BIO_LIB);
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				X509V3_conf_err(val);
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				goto err;
188
			}
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		}
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		else if (strncmp(val->value, "text:", 5) == 0) {
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			val_len = strlen(val->value + 5);
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			tmp_data = realloc((*policy)->data,
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			    (*policy)->length + val_len + 1);
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			if (tmp_data) {
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				(*policy)->data = tmp_data;
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				memcpy(&(*policy)->data[(*policy)->length],
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				    val->value + 5, val_len);
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				(*policy)->length += val_len;
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				(*policy)->data[(*policy)->length] = '\0';
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			} else {
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				free((*policy)->data);
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				(*policy)->data = NULL;
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				(*policy)->length = 0;
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				X509V3error(ERR_R_MALLOC_FAILURE);
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				X509V3_conf_err(val);
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				goto err;
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			}
208
		} else {
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			X509V3error(X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
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			X509V3_conf_err(val);
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			goto err;
212
		}
213
		if (!tmp_data) {
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			X509V3error(ERR_R_MALLOC_FAILURE);
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			X509V3_conf_err(val);
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			goto err;
217
		}
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	}
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	return 1;
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err:
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	if (free_policy) {
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		ASN1_OCTET_STRING_free(*policy);
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		*policy = NULL;
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	}
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	return 0;
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}
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static PROXY_CERT_INFO_EXTENSION *
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r2i_pci(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *value)
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{
232
	PROXY_CERT_INFO_EXTENSION *pci = NULL;
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	STACK_OF(CONF_VALUE) *vals;
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	ASN1_OBJECT *language = NULL;
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	ASN1_INTEGER *pathlen = NULL;
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	ASN1_OCTET_STRING *policy = NULL;
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	int i, j;
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239
	vals = X509V3_parse_list(value);
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	for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
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		CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);
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		if (!cnf->name || (*cnf->name != '@' && !cnf->value)) {
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			X509V3error(X509V3_R_INVALID_PROXY_POLICY_SETTING);
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			X509V3_conf_err(cnf);
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			goto err;
246
		}
247
		if (*cnf->name == '@') {
248
			STACK_OF(CONF_VALUE) *sect;
249
			int success_p = 1;
250
251
			sect = X509V3_get_section(ctx, cnf->name + 1);
252
			if (!sect) {
253
				X509V3error(X509V3_R_INVALID_SECTION);
254
				X509V3_conf_err(cnf);
255
				goto err;
256
			}
257
			for (j = 0; success_p &&
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			    j < sk_CONF_VALUE_num(sect); j++) {
259
				success_p = process_pci_value(
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				    sk_CONF_VALUE_value(sect, j),
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				    &language, &pathlen, &policy);
262
			}
263
			X509V3_section_free(ctx, sect);
264
			if (!success_p)
265
				goto err;
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		} else {
267
			if (!process_pci_value(cnf,
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			    &language, &pathlen, &policy)) {
269
				X509V3_conf_err(cnf);
270
				goto err;
271
			}
272
		}
273
	}
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275
	/* Language is mandatory */
276
	if (!language) {
277
		X509V3error(X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);
278
		goto err;
279
	}
280
	i = OBJ_obj2nid(language);
281
	if ((i == NID_Independent || i == NID_id_ppl_inheritAll) && policy) {
282
		X509V3error(X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);
283
		goto err;
284
	}
285
286
	pci = PROXY_CERT_INFO_EXTENSION_new();
287
	if (!pci) {
288
		X509V3error(ERR_R_MALLOC_FAILURE);
289
		goto err;
290
	}
291
292
	pci->proxyPolicy->policyLanguage = language;
293
	language = NULL;
294
	pci->proxyPolicy->policy = policy;
295
	policy = NULL;
296
	pci->pcPathLengthConstraint = pathlen;
297
	pathlen = NULL;
298
	goto end;
299
300
err:
301
	ASN1_OBJECT_free(language);
302
	language = NULL;
303
	ASN1_INTEGER_free(pathlen);
304
	pathlen = NULL;
305
	ASN1_OCTET_STRING_free(policy);
306
	policy = NULL;
307
end:
308
	sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
309
	return pci;
310
}