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433 lines
13 KiB
433 lines
13 KiB
/* x509_vpm.c */ |
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/* |
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project |
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* 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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/* X509_VERIFY_PARAM functions */ |
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static void x509_verify_param_zero(X509_VERIFY_PARAM *param) |
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{ |
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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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/* |
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* param->inh_flags = X509_VP_FLAG_DEFAULT; |
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*/ |
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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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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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} |
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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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param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM)); |
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if (!param) |
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return NULL; |
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memset(param, 0, sizeof(X509_VERIFY_PARAM)); |
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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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if (param == NULL) |
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return; |
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x509_verify_param_zero(param); |
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OPENSSL_free(param); |
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} |
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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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/* 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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if (!src) |
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return 1; |
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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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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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if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies)) |
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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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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, |
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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, |
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ASN1_OBJECT *policy) |
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{ |
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if (!param->policies) { |
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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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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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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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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_get_depth(const X509_VERIFY_PARAM *param) |
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{ |
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return param->depth; |
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} |
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/* |
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* Default verify parameters: these are used for various applications and can |
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* be overridden by the user specified table. NB: the 'name' field *must* be |
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* in alphabetical order because it will be searched using OBJ_search. |
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*/ |
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static const X509_VERIFY_PARAM default_table[] = { |
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{ |
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"default", /* X509 default parameters */ |
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0, /* Check time */ |
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0, /* internal flags */ |
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0, /* flags */ |
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0, /* purpose */ |
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0, /* trust */ |
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100, /* depth */ |
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NULL /* policies */ |
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}, |
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{ |
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"pkcs7", /* S/MIME sign parameters */ |
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0, /* Check time */ |
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0, /* internal flags */ |
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0, /* flags */ |
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X509_PURPOSE_SMIME_SIGN, /* purpose */ |
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X509_TRUST_EMAIL, /* trust */ |
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-1, /* depth */ |
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NULL /* policies */ |
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}, |
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{ |
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"smime_sign", /* S/MIME sign parameters */ |
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0, /* Check time */ |
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0, /* internal flags */ |
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0, /* flags */ |
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X509_PURPOSE_SMIME_SIGN, /* purpose */ |
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X509_TRUST_EMAIL, /* trust */ |
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-1, /* depth */ |
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NULL /* policies */ |
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}, |
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{ |
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"ssl_client", /* SSL/TLS client parameters */ |
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0, /* Check time */ |
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0, /* internal flags */ |
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0, /* flags */ |
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X509_PURPOSE_SSL_CLIENT, /* purpose */ |
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X509_TRUST_SSL_CLIENT, /* trust */ |
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-1, /* depth */ |
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NULL /* policies */ |
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}, |
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{ |
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"ssl_server", /* SSL/TLS server parameters */ |
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0, /* Check time */ |
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0, /* internal flags */ |
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0, /* flags */ |
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X509_PURPOSE_SSL_SERVER, /* purpose */ |
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X509_TRUST_SSL_SERVER, /* trust */ |
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-1, /* depth */ |
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NULL /* policies */ |
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} |
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}; |
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static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL; |
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static int table_cmp(const X509_VERIFY_PARAM *a, const X509_VERIFY_PARAM *b) |
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{ |
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return strcmp(a->name, b->name); |
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} |
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DECLARE_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table); |
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IMPLEMENT_OBJ_BSEARCH_CMP_FN(X509_VERIFY_PARAM, X509_VERIFY_PARAM, table); |
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static int param_cmp(const X509_VERIFY_PARAM *const *a, |
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const X509_VERIFY_PARAM *const *b) |
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{ |
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return strcmp((*a)->name, (*b)->name); |
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} |
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int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param) |
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{ |
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int idx; |
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X509_VERIFY_PARAM *ptmp; |
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if (!param_table) { |
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param_table = sk_X509_VERIFY_PARAM_new(param_cmp); |
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if (!param_table) |
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return 0; |
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} else { |
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idx = sk_X509_VERIFY_PARAM_find(param_table, param); |
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if (idx != -1) { |
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ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx); |
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X509_VERIFY_PARAM_free(ptmp); |
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(void)sk_X509_VERIFY_PARAM_delete(param_table, idx); |
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} |
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} |
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if (!sk_X509_VERIFY_PARAM_push(param_table, param)) |
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return 0; |
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return 1; |
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} |
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const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name) |
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{ |
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int idx; |
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X509_VERIFY_PARAM pm; |
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pm.name = (char *)name; |
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if (param_table) { |
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idx = sk_X509_VERIFY_PARAM_find(param_table, &pm); |
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if (idx != -1) |
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return sk_X509_VERIFY_PARAM_value(param_table, idx); |
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} |
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return OBJ_bsearch_table(&pm, default_table, |
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sizeof(default_table) / |
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sizeof(X509_VERIFY_PARAM)); |
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} |
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void X509_VERIFY_PARAM_table_cleanup(void) |
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{ |
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if (param_table) |
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sk_X509_VERIFY_PARAM_pop_free(param_table, X509_VERIFY_PARAM_free); |
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param_table = NULL; |
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}
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