297c67fcd8
Reduces number of silly casts in OpenSSL code and likely most applications. Consistent with (char *) for "peername" value from X509_check_host() and X509_VERIFY_PARAM_get0_peername().
679 lines
17 KiB
C
679 lines
17 KiB
C
/* x509_vpm.c */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project 2004.
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*/
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/* ====================================================================
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* Copyright (c) 2004 The OpenSSL Project. 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
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/crypto.h>
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#include <openssl/lhash.h>
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#include <openssl/buffer.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include "x509_lcl.h"
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/* X509_VERIFY_PARAM functions */
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#define SET_HOST 0
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#define ADD_HOST 1
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static char *str_copy(const char *s) { return OPENSSL_strdup(s); }
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static void str_free(char *s) { OPENSSL_free(s); }
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#define string_stack_free(sk) sk_OPENSSL_STRING_pop_free(sk, str_free)
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static int int_x509_param_set_hosts(X509_VERIFY_PARAM_ID *id, int mode,
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const char *name, size_t namelen)
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{
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char *copy;
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/*
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* Refuse names with embedded NUL bytes, except perhaps as final byte.
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* XXX: Do we need to push an error onto the error stack?
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*/
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if (namelen == 0)
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namelen = name ? strlen(name) : 0;
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else if (name && memchr(name, '\0', namelen > 1 ? namelen-1 : namelen))
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return 0;
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if (name && name[namelen-1] == '\0')
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--namelen;
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if (mode == SET_HOST && id->hosts)
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{
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string_stack_free(id->hosts);
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id->hosts = NULL;
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}
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if (name == NULL || namelen == 0)
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return 1;
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copy = BUF_strndup(name, namelen);
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if (copy == NULL)
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return 0;
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if (id->hosts == NULL &&
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(id->hosts = sk_OPENSSL_STRING_new_null()) == NULL)
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{
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OPENSSL_free(copy);
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return 0;
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}
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if (!sk_OPENSSL_STRING_push(id->hosts, copy))
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{
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OPENSSL_free(copy);
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if (sk_OPENSSL_STRING_num(id->hosts) == 0)
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{
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sk_OPENSSL_STRING_free(id->hosts);
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id->hosts = NULL;
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}
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return 0;
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}
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return 1;
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}
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static void x509_verify_param_zero(X509_VERIFY_PARAM *param)
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{
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X509_VERIFY_PARAM_ID *paramid;
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if (!param)
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return;
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param->name = NULL;
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param->purpose = 0;
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param->trust = 0;
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/*param->inh_flags = X509_VP_FLAG_DEFAULT;*/
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param->inh_flags = 0;
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param->flags = 0;
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param->depth = -1;
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if (param->policies)
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{
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sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
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param->policies = NULL;
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}
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paramid = param->id;
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if (paramid->hosts)
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{
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string_stack_free(paramid->hosts);
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paramid->hosts = NULL;
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}
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if (paramid->peername)
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OPENSSL_free(paramid->peername);
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if (paramid->email)
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{
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OPENSSL_free(paramid->email);
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paramid->email = NULL;
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paramid->emaillen = 0;
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}
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if (paramid->ip)
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{
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OPENSSL_free(paramid->ip);
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paramid->ip = NULL;
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paramid->iplen = 0;
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}
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}
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X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
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{
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X509_VERIFY_PARAM *param;
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X509_VERIFY_PARAM_ID *paramid;
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param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));
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if (!param)
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return NULL;
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paramid = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));
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if (!paramid)
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{
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OPENSSL_free(param);
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return NULL;
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}
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memset(param, 0, sizeof(X509_VERIFY_PARAM));
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memset(paramid, 0, sizeof(X509_VERIFY_PARAM_ID));
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param->id = paramid;
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x509_verify_param_zero(param);
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return param;
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}
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void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
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{
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x509_verify_param_zero(param);
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OPENSSL_free(param->id);
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OPENSSL_free(param);
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}
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/* This function determines how parameters are "inherited" from one structure
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* to another. There are several different ways this can happen.
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*
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* 1. If a child structure needs to have its values initialized from a parent
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* they are simply copied across. For example SSL_CTX copied to SSL.
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* 2. If the structure should take on values only if they are currently unset.
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* For example the values in an SSL structure will take appropriate value
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* for SSL servers or clients but only if the application has not set new
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* ones.
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*
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* The "inh_flags" field determines how this function behaves.
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*
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* Normally any values which are set in the default are not copied from the
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* destination and verify flags are ORed together.
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*
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* If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
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* to the destination. Effectively the values in "to" become default values
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* which will be used only if nothing new is set in "from".
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*
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* If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
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* they are set or not. Flags is still Ored though.
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*
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* If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
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* of ORed.
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*
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* If X509_VP_FLAG_LOCKED is set then no values are copied.
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*
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* If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
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* after the next call.
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*/
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/* Macro to test if a field should be copied from src to dest */
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#define test_x509_verify_param_copy(field, def) \
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(to_overwrite || \
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((src->field != def) && (to_default || (dest->field == def))))
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/* As above but for ID fields */
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#define test_x509_verify_param_copy_id(idf, def) \
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test_x509_verify_param_copy(id->idf, def)
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/* Macro to test and copy a field if necessary */
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#define x509_verify_param_copy(field, def) \
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if (test_x509_verify_param_copy(field, def)) \
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dest->field = src->field
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int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,
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const X509_VERIFY_PARAM *src)
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{
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unsigned long inh_flags;
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int to_default, to_overwrite;
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X509_VERIFY_PARAM_ID *id;
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if (!src)
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return 1;
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id = src->id;
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inh_flags = dest->inh_flags | src->inh_flags;
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if (inh_flags & X509_VP_FLAG_ONCE)
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dest->inh_flags = 0;
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if (inh_flags & X509_VP_FLAG_LOCKED)
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return 1;
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if (inh_flags & X509_VP_FLAG_DEFAULT)
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to_default = 1;
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else
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to_default = 0;
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if (inh_flags & X509_VP_FLAG_OVERWRITE)
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to_overwrite = 1;
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else
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to_overwrite = 0;
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x509_verify_param_copy(purpose, 0);
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x509_verify_param_copy(trust, 0);
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x509_verify_param_copy(depth, -1);
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/* If overwrite or check time not set, copy across */
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if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME))
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{
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dest->check_time = src->check_time;
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dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
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/* Don't need to copy flag: that is done below */
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}
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if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
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dest->flags = 0;
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dest->flags |= src->flags;
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if (test_x509_verify_param_copy(policies, NULL))
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{
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if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
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return 0;
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}
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/* Copy the host flags if and only if we're copying the host list */
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if (test_x509_verify_param_copy_id(hosts, NULL))
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{
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if (dest->id->hosts)
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{
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string_stack_free(dest->id->hosts);
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dest->id->hosts = NULL;
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}
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if (id->hosts)
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{
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dest->id->hosts =
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sk_OPENSSL_STRING_deep_copy(id->hosts,
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str_copy, str_free);
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if (dest->id->hosts == NULL)
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return 0;
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dest->id->hostflags = id->hostflags;
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}
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}
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if (test_x509_verify_param_copy_id(email, NULL))
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{
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if (!X509_VERIFY_PARAM_set1_email(dest, id->email, id->emaillen))
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return 0;
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}
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if (test_x509_verify_param_copy_id(ip, NULL))
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{
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if (!X509_VERIFY_PARAM_set1_ip(dest, id->ip, id->iplen))
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return 0;
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}
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return 1;
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}
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int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
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const X509_VERIFY_PARAM *from)
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{
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unsigned long save_flags = to->inh_flags;
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int ret;
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to->inh_flags |= X509_VP_FLAG_DEFAULT;
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ret = X509_VERIFY_PARAM_inherit(to, from);
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to->inh_flags = save_flags;
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return ret;
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}
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static int int_x509_param_set1(char **pdest, size_t *pdestlen,
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const char *src, size_t srclen)
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{
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void *tmp;
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if (src)
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{
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if (srclen == 0)
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{
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tmp = BUF_strdup(src);
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srclen = strlen(src);
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}
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else
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tmp = BUF_memdup(src, srclen);
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if (!tmp)
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return 0;
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}
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else
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{
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tmp = NULL;
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srclen = 0;
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}
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if (*pdest)
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OPENSSL_free(*pdest);
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*pdest = tmp;
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if (pdestlen)
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*pdestlen = srclen;
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return 1;
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}
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int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
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{
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if (param->name)
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OPENSSL_free(param->name);
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param->name = BUF_strdup(name);
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if (param->name)
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return 1;
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return 0;
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}
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int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
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{
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param->flags |= flags;
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if (flags & X509_V_FLAG_POLICY_MASK)
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param->flags |= X509_V_FLAG_POLICY_CHECK;
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return 1;
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}
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int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param, unsigned long flags)
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{
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param->flags &= ~flags;
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return 1;
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}
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unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
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{
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return param->flags;
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}
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int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
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{
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return X509_PURPOSE_set(¶m->purpose, purpose);
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}
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int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
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{
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return X509_TRUST_set(¶m->trust, trust);
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}
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void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
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{
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param->depth = depth;
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}
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void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
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{
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param->check_time = t;
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param->flags |= X509_V_FLAG_USE_CHECK_TIME;
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}
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int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param, ASN1_OBJECT *policy)
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{
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if (!param->policies)
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{
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param->policies = sk_ASN1_OBJECT_new_null();
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if (!param->policies)
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return 0;
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}
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if (!sk_ASN1_OBJECT_push(param->policies, policy))
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return 0;
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return 1;
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}
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int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
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STACK_OF(ASN1_OBJECT) *policies)
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{
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int i;
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ASN1_OBJECT *oid, *doid;
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if (!param)
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return 0;
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if (param->policies)
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sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
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if (!policies)
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{
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param->policies = NULL;
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return 1;
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}
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param->policies = sk_ASN1_OBJECT_new_null();
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if (!param->policies)
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return 0;
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for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++)
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{
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oid = sk_ASN1_OBJECT_value(policies, i);
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doid = OBJ_dup(oid);
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if (!doid)
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return 0;
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if (!sk_ASN1_OBJECT_push(param->policies, doid))
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{
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ASN1_OBJECT_free(doid);
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return 0;
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}
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}
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param->flags |= X509_V_FLAG_POLICY_CHECK;
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return 1;
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}
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int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
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const char *name, size_t namelen)
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{
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return int_x509_param_set_hosts(param->id, SET_HOST, name, namelen);
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}
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int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
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const char *name, size_t namelen)
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{
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return int_x509_param_set_hosts(param->id, ADD_HOST, name, namelen);
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}
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void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
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unsigned int flags)
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{
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param->id->hostflags = flags;
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}
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char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *param)
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{
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return param->id->peername;
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}
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int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
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const char *email, size_t emaillen)
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{
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return int_x509_param_set1(¶m->id->email, ¶m->id->emaillen,
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email, emaillen);
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}
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int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
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const unsigned char *ip, size_t iplen)
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{
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if (iplen != 0 && iplen != 4 && iplen != 16)
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return 0;
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return int_x509_param_set1((char **)¶m->id->ip, ¶m->id->iplen,
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(char *)ip, iplen);
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}
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int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc)
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{
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unsigned char ipout[16];
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size_t iplen;
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iplen = (size_t) a2i_ipadd(ipout, ipasc);
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if (iplen == 0)
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return 0;
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return X509_VERIFY_PARAM_set1_ip(param, ipout, iplen);
|
|
}
|
|
|
|
int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
|
|
{
|
|
return param->depth;
|
|
}
|
|
|
|
const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param)
|
|
{
|
|
return param->name;
|
|
}
|
|
|
|
static X509_VERIFY_PARAM_ID _empty_id = {NULL, 0U, NULL, NULL, 0, NULL, 0};
|
|
|
|
#define vpm_empty_id (X509_VERIFY_PARAM_ID *)&_empty_id
|
|
|
|
|
|
/* Default verify parameters: these are used for various
|
|
* applications and can be overridden by the user specified table.
|
|
* NB: the 'name' field *must* be in alphabetical order because it
|
|
* will be searched using OBJ_search.
|
|
*/
|
|
|
|
static const X509_VERIFY_PARAM default_table[] = {
|
|
{
|
|
"default", /* X509 default parameters */
|
|
0, /* Check time */
|
|
0, /* internal flags */
|
|
0, /* flags */
|
|
0, /* purpose */
|
|
0, /* trust */
|
|
100, /* depth */
|
|
NULL, /* policies */
|
|
vpm_empty_id
|
|
},
|
|
{
|
|
"pkcs7", /* S/MIME sign parameters */
|
|
0, /* Check time */
|
|
0, /* internal flags */
|
|
0, /* flags */
|
|
X509_PURPOSE_SMIME_SIGN, /* purpose */
|
|
X509_TRUST_EMAIL, /* trust */
|
|
-1, /* depth */
|
|
NULL, /* policies */
|
|
vpm_empty_id
|
|
},
|
|
{
|
|
"smime_sign", /* S/MIME sign parameters */
|
|
0, /* Check time */
|
|
0, /* internal flags */
|
|
0, /* flags */
|
|
X509_PURPOSE_SMIME_SIGN, /* purpose */
|
|
X509_TRUST_EMAIL, /* trust */
|
|
-1, /* depth */
|
|
NULL, /* policies */
|
|
vpm_empty_id
|
|
},
|
|
{
|
|
"ssl_client", /* SSL/TLS client parameters */
|
|
0, /* Check time */
|
|
0, /* internal flags */
|
|
0, /* flags */
|
|
X509_PURPOSE_SSL_CLIENT, /* purpose */
|
|
X509_TRUST_SSL_CLIENT, /* trust */
|
|
-1, /* depth */
|
|
NULL, /* policies */
|
|
vpm_empty_id
|
|
},
|
|
{
|
|
"ssl_server", /* SSL/TLS server parameters */
|
|
0, /* Check time */
|
|
0, /* internal flags */
|
|
0, /* flags */
|
|
X509_PURPOSE_SSL_SERVER, /* purpose */
|
|
X509_TRUST_SSL_SERVER, /* trust */
|
|
-1, /* depth */
|
|
NULL, /* policies */
|
|
vpm_empty_id
|
|
}};
|
|
|
|
static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
|
|
|
|
static int table_cmp(const X509_VERIFY_PARAM *a, const X509_VERIFY_PARAM *b)
|
|
|
|
{
|
|
return strcmp(a->name, b->name);
|
|
}
|
|
|
|
DECLARE_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM,
|
|
table);
|
|
IMPLEMENT_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM,
|
|
table);
|
|
|
|
static int param_cmp(const X509_VERIFY_PARAM * const *a,
|
|
const X509_VERIFY_PARAM * const *b)
|
|
{
|
|
return strcmp((*a)->name, (*b)->name);
|
|
}
|
|
|
|
int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
|
|
{
|
|
int idx;
|
|
X509_VERIFY_PARAM *ptmp;
|
|
if (!param_table)
|
|
{
|
|
param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
|
|
if (!param_table)
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
idx = sk_X509_VERIFY_PARAM_find(param_table, param);
|
|
if (idx != -1)
|
|
{
|
|
ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);
|
|
X509_VERIFY_PARAM_free(ptmp);
|
|
(void)sk_X509_VERIFY_PARAM_delete(param_table, idx);
|
|
}
|
|
}
|
|
if (!sk_X509_VERIFY_PARAM_push(param_table, param))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
int X509_VERIFY_PARAM_get_count(void)
|
|
{
|
|
int num = sizeof(default_table)/sizeof(X509_VERIFY_PARAM);
|
|
if (param_table)
|
|
num += sk_X509_VERIFY_PARAM_num(param_table);
|
|
return num;
|
|
}
|
|
|
|
const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id)
|
|
{
|
|
int num = sizeof(default_table)/sizeof(X509_VERIFY_PARAM);
|
|
if (id < num)
|
|
return default_table + id;
|
|
return sk_X509_VERIFY_PARAM_value(param_table, id - num);
|
|
}
|
|
|
|
const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name)
|
|
{
|
|
int idx;
|
|
X509_VERIFY_PARAM pm;
|
|
|
|
pm.name = (char *)name;
|
|
if (param_table)
|
|
{
|
|
idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);
|
|
if (idx != -1)
|
|
return sk_X509_VERIFY_PARAM_value(param_table, idx);
|
|
}
|
|
return OBJ_bsearch_table(&pm, default_table,
|
|
sizeof(default_table)/sizeof(X509_VERIFY_PARAM));
|
|
}
|
|
|
|
void X509_VERIFY_PARAM_table_cleanup(void)
|
|
{
|
|
if (param_table)
|
|
sk_X509_VERIFY_PARAM_pop_free(param_table,
|
|
X509_VERIFY_PARAM_free);
|
|
param_table = NULL;
|
|
}
|