2754597013
I have tried to convert 'len' type variable declarations to unsigned as a means to address these warnings when appropriate, but when in doubt I have used casts in the comparisons instead. The better solution (that would get us all lynched by API users) would be to go through and convert all the function prototypes and structure definitions to use unsigned variables except when signed is necessary. The proliferation of (signed) "int" for strictly non-negative uses is unfortunate.
287 lines
8.5 KiB
C
287 lines
8.5 KiB
C
/* x509_trs.c */
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/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
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* project 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999 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/x509v3.h>
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static int tr_cmp(const X509_TRUST * const *a,
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const X509_TRUST * const *b);
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static void trtable_free(X509_TRUST *p);
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static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags);
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static int trust_1oid(X509_TRUST *trust, X509 *x, int flags);
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static int trust_compat(X509_TRUST *trust, X509 *x, int flags);
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static int obj_trust(int id, X509 *x, int flags);
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static int (*default_trust)(int id, X509 *x, int flags) = obj_trust;
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/* WARNING: the following table should be kept in order of trust
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* and without any gaps so we can just subtract the minimum trust
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* value to get an index into the table
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*/
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static X509_TRUST trstandard[] = {
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{X509_TRUST_COMPAT, 0, trust_compat, "compatible", 0, NULL},
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{X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL},
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{X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Server", NID_server_auth, NULL},
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{X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},
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{X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, "Object Signer", NID_code_sign, NULL},
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{X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL},
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{X509_TRUST_OCSP_REQUEST, 0, trust_1oid, "OCSP request", NID_ad_OCSP, NULL}
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};
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#define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST))
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IMPLEMENT_STACK_OF(X509_TRUST)
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static STACK_OF(X509_TRUST) *trtable = NULL;
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static int tr_cmp(const X509_TRUST * const *a,
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const X509_TRUST * const *b)
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{
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return (*a)->trust - (*b)->trust;
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}
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int (*X509_TRUST_set_default(int (*trust)(int , X509 *, int)))(int, X509 *, int)
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{
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int (*oldtrust)(int , X509 *, int);
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oldtrust = default_trust;
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default_trust = trust;
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return oldtrust;
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}
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int X509_check_trust(X509 *x, int id, int flags)
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{
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X509_TRUST *pt;
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int idx;
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if(id == -1) return 1;
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idx = X509_TRUST_get_by_id(id);
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if(idx == -1) return default_trust(id, x, flags);
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pt = X509_TRUST_get0(idx);
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return pt->check_trust(pt, x, flags);
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}
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int X509_TRUST_get_count(void)
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{
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if(!trtable) return X509_TRUST_COUNT;
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return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
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}
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X509_TRUST * X509_TRUST_get0(int idx)
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{
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if(idx < 0) return NULL;
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if(idx < (int)X509_TRUST_COUNT) return trstandard + idx;
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return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
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}
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int X509_TRUST_get_by_id(int id)
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{
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X509_TRUST tmp;
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int idx;
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if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
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return id - X509_TRUST_MIN;
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tmp.trust = id;
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if(!trtable) return -1;
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idx = sk_X509_TRUST_find(trtable, &tmp);
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if(idx == -1) return -1;
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return idx + X509_TRUST_COUNT;
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}
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int X509_TRUST_set(int *t, int trust)
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{
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if(X509_TRUST_get_by_id(trust) == -1) {
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X509err(X509_F_X509_TRUST_SET, X509_R_INVALID_TRUST);
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return 0;
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}
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*t = trust;
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return 1;
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}
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int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int),
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char *name, int arg1, void *arg2)
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{
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int idx;
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X509_TRUST *trtmp;
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/* This is set according to what we change: application can't set it */
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flags &= ~X509_TRUST_DYNAMIC;
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/* This will always be set for application modified trust entries */
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flags |= X509_TRUST_DYNAMIC_NAME;
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/* Get existing entry if any */
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idx = X509_TRUST_get_by_id(id);
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/* Need a new entry */
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if(idx == -1) {
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if(!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {
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X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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trtmp->flags = X509_TRUST_DYNAMIC;
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} else trtmp = X509_TRUST_get0(idx);
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/* OPENSSL_free existing name if dynamic */
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if(trtmp->flags & X509_TRUST_DYNAMIC_NAME) OPENSSL_free(trtmp->name);
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/* dup supplied name */
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if(!(trtmp->name = BUF_strdup(name))) {
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X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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/* Keep the dynamic flag of existing entry */
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trtmp->flags &= X509_TRUST_DYNAMIC;
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/* Set all other flags */
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trtmp->flags |= flags;
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trtmp->trust = id;
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trtmp->check_trust = ck;
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trtmp->arg1 = arg1;
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trtmp->arg2 = arg2;
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/* If its a new entry manage the dynamic table */
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if(idx == -1) {
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if(!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
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X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if (!sk_X509_TRUST_push(trtable, trtmp)) {
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X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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return 1;
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}
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static void trtable_free(X509_TRUST *p)
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{
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if(!p) return;
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if (p->flags & X509_TRUST_DYNAMIC)
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{
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if (p->flags & X509_TRUST_DYNAMIC_NAME)
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OPENSSL_free(p->name);
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OPENSSL_free(p);
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}
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}
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void X509_TRUST_cleanup(void)
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{
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unsigned int i;
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for(i = 0; i < X509_TRUST_COUNT; i++) trtable_free(trstandard + i);
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sk_X509_TRUST_pop_free(trtable, trtable_free);
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trtable = NULL;
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}
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int X509_TRUST_get_flags(X509_TRUST *xp)
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{
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return xp->flags;
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}
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char *X509_TRUST_get0_name(X509_TRUST *xp)
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{
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return xp->name;
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}
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int X509_TRUST_get_trust(X509_TRUST *xp)
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{
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return xp->trust;
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}
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static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags)
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{
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if(x->aux && (x->aux->trust || x->aux->reject))
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return obj_trust(trust->arg1, x, flags);
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/* we don't have any trust settings: for compatibility
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* we return trusted if it is self signed
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*/
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return trust_compat(trust, x, flags);
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}
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static int trust_1oid(X509_TRUST *trust, X509 *x, int flags)
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{
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if(x->aux) return obj_trust(trust->arg1, x, flags);
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return X509_TRUST_UNTRUSTED;
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}
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static int trust_compat(X509_TRUST *trust, X509 *x, int flags)
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{
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X509_check_purpose(x, -1, 0);
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if(x->ex_flags & EXFLAG_SS) return X509_TRUST_TRUSTED;
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else return X509_TRUST_UNTRUSTED;
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}
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static int obj_trust(int id, X509 *x, int flags)
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{
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ASN1_OBJECT *obj;
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int i;
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X509_CERT_AUX *ax;
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ax = x->aux;
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if(!ax) return X509_TRUST_UNTRUSTED;
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if(ax->reject) {
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for(i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
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obj = sk_ASN1_OBJECT_value(ax->reject, i);
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if(OBJ_obj2nid(obj) == id) return X509_TRUST_REJECTED;
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}
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}
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if(ax->trust) {
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for(i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
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obj = sk_ASN1_OBJECT_value(ax->trust, i);
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if(OBJ_obj2nid(obj) == id) return X509_TRUST_TRUSTED;
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}
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}
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return X509_TRUST_UNTRUSTED;
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}
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