| /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| * project 1999. */ |
| /* ==================================================================== |
| * Copyright (c) 1999 The OpenSSL Project. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * licensing@OpenSSL.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| * OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This product includes cryptographic software written by Eric Young |
| * (eay@cryptsoft.com). This product includes software written by Tim |
| * Hudson (tjh@cryptsoft.com). */ |
| |
| #include <openssl/buf.h> |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| #include <openssl/obj.h> |
| #include <openssl/x509v3.h> |
| |
| |
| static int tr_cmp(const X509_TRUST **a, |
| const X509_TRUST **b); |
| static void trtable_free(X509_TRUST *p); |
| |
| static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags); |
| static int trust_1oid(X509_TRUST *trust, X509 *x, int flags); |
| static int trust_compat(X509_TRUST *trust, X509 *x, int flags); |
| |
| static int obj_trust(int id, X509 *x, int flags); |
| static int (*default_trust)(int id, X509 *x, int flags) = obj_trust; |
| |
| /* WARNING: the following table should be kept in order of trust |
| * and without any gaps so we can just subtract the minimum trust |
| * value to get an index into the table |
| */ |
| |
| static X509_TRUST trstandard[] = { |
| {X509_TRUST_COMPAT, 0, trust_compat, (char *) "compatible", 0, NULL}, |
| {X509_TRUST_SSL_CLIENT, 0, trust_1oidany, (char *) "SSL Client", NID_client_auth, NULL}, |
| {X509_TRUST_SSL_SERVER, 0, trust_1oidany, (char *) "SSL Server", NID_server_auth, NULL}, |
| {X509_TRUST_EMAIL, 0, trust_1oidany, (char *) "S/MIME email", NID_email_protect, NULL}, |
| {X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, (char *) "Object Signer", NID_code_sign, NULL}, |
| {X509_TRUST_OCSP_SIGN, 0, trust_1oid, (char *) "OCSP responder", NID_OCSP_sign, NULL}, |
| {X509_TRUST_OCSP_REQUEST, 0, trust_1oid, (char *) "OCSP request", NID_ad_OCSP, NULL}, |
| {X509_TRUST_TSA, 0, trust_1oidany, (char *) "TSA server", NID_time_stamp, NULL} |
| }; |
| |
| #define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST)) |
| |
| static STACK_OF(X509_TRUST) *trtable = NULL; |
| |
| static int tr_cmp(const X509_TRUST **a, |
| const X509_TRUST **b) |
| { |
| return (*a)->trust - (*b)->trust; |
| } |
| |
| int (*X509_TRUST_set_default(int (*trust)(int , X509 *, int)))(int, X509 *, int) |
| { |
| int (*oldtrust)(int , X509 *, int); |
| oldtrust = default_trust; |
| default_trust = trust; |
| return oldtrust; |
| } |
| |
| |
| int X509_check_trust(X509 *x, int id, int flags) |
| { |
| X509_TRUST *pt; |
| int idx; |
| if(id == -1) return 1; |
| /* We get this as a default value */ |
| if (id == 0) |
| { |
| int rv; |
| rv = obj_trust(NID_anyExtendedKeyUsage, x, 0); |
| if (rv != X509_TRUST_UNTRUSTED) |
| return rv; |
| return trust_compat(NULL, x, 0); |
| } |
| idx = X509_TRUST_get_by_id(id); |
| if(idx == -1) return default_trust(id, x, flags); |
| pt = X509_TRUST_get0(idx); |
| return pt->check_trust(pt, x, flags); |
| } |
| |
| int X509_TRUST_get_count(void) |
| { |
| if(!trtable) return X509_TRUST_COUNT; |
| return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT; |
| } |
| |
| X509_TRUST * X509_TRUST_get0(int idx) |
| { |
| if(idx < 0) return NULL; |
| if(idx < (int)X509_TRUST_COUNT) return trstandard + idx; |
| return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT); |
| } |
| |
| int X509_TRUST_get_by_id(int id) |
| { |
| X509_TRUST tmp; |
| size_t idx; |
| |
| if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX)) |
| return id - X509_TRUST_MIN; |
| tmp.trust = id; |
| if(!trtable) return -1; |
| if (!sk_X509_TRUST_find(trtable, &idx, &tmp)) { |
| return -1; |
| } |
| return idx + X509_TRUST_COUNT; |
| } |
| |
| int X509_TRUST_set(int *t, int trust) |
| { |
| if(X509_TRUST_get_by_id(trust) == -1) { |
| OPENSSL_PUT_ERROR(X509, X509_TRUST_set, X509_R_INVALID_TRUST); |
| return 0; |
| } |
| *t = trust; |
| return 1; |
| } |
| |
| int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int), |
| char *name, int arg1, void *arg2) |
| { |
| int idx; |
| X509_TRUST *trtmp; |
| char *name_dup; |
| |
| /* This is set according to what we change: application can't set it */ |
| flags &= ~X509_TRUST_DYNAMIC; |
| /* This will always be set for application modified trust entries */ |
| flags |= X509_TRUST_DYNAMIC_NAME; |
| /* Get existing entry if any */ |
| idx = X509_TRUST_get_by_id(id); |
| /* Need a new entry */ |
| if(idx == -1) { |
| if(!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) { |
| OPENSSL_PUT_ERROR(X509, X509_TRUST_add, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| trtmp->flags = X509_TRUST_DYNAMIC; |
| } else trtmp = X509_TRUST_get0(idx); |
| |
| /* Duplicate the supplied name. */ |
| name_dup = BUF_strdup(name); |
| if (name_dup == NULL) { |
| OPENSSL_PUT_ERROR(X509, X509_TRUST_add, ERR_R_MALLOC_FAILURE); |
| if (idx == -1) |
| OPENSSL_free(trtmp); |
| return 0; |
| } |
| |
| /* OPENSSL_free existing name if dynamic */ |
| if (trtmp->flags & X509_TRUST_DYNAMIC_NAME) OPENSSL_free(trtmp->name); |
| trtmp->name = name_dup; |
| /* Keep the dynamic flag of existing entry */ |
| trtmp->flags &= X509_TRUST_DYNAMIC; |
| /* Set all other flags */ |
| trtmp->flags |= flags; |
| |
| trtmp->trust = id; |
| trtmp->check_trust = ck; |
| trtmp->arg1 = arg1; |
| trtmp->arg2 = arg2; |
| |
| /* If its a new entry manage the dynamic table */ |
| if(idx == -1) { |
| if(!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) { |
| OPENSSL_PUT_ERROR(X509, X509_TRUST_add, ERR_R_MALLOC_FAILURE); |
| trtable_free(trtmp); |
| return 0; |
| } |
| if (!sk_X509_TRUST_push(trtable, trtmp)) { |
| OPENSSL_PUT_ERROR(X509, X509_TRUST_add, ERR_R_MALLOC_FAILURE); |
| trtable_free(trtmp); |
| return 0; |
| } |
| } |
| return 1; |
| } |
| |
| static void trtable_free(X509_TRUST *p) |
| { |
| if(!p) return; |
| if (p->flags & X509_TRUST_DYNAMIC) |
| { |
| if (p->flags & X509_TRUST_DYNAMIC_NAME) |
| OPENSSL_free(p->name); |
| OPENSSL_free(p); |
| } |
| } |
| |
| void X509_TRUST_cleanup(void) |
| { |
| unsigned int i; |
| for(i = 0; i < X509_TRUST_COUNT; i++) trtable_free(trstandard + i); |
| sk_X509_TRUST_pop_free(trtable, trtable_free); |
| trtable = NULL; |
| } |
| |
| int X509_TRUST_get_flags(X509_TRUST *xp) |
| { |
| return xp->flags; |
| } |
| |
| char *X509_TRUST_get0_name(X509_TRUST *xp) |
| { |
| return xp->name; |
| } |
| |
| int X509_TRUST_get_trust(X509_TRUST *xp) |
| { |
| return xp->trust; |
| } |
| |
| static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags) |
| { |
| if(x->aux && (x->aux->trust || x->aux->reject)) |
| return obj_trust(trust->arg1, x, flags); |
| /* we don't have any trust settings: for compatibility |
| * we return trusted if it is self signed |
| */ |
| return trust_compat(trust, x, flags); |
| } |
| |
| static int trust_1oid(X509_TRUST *trust, X509 *x, int flags) |
| { |
| if(x->aux) return obj_trust(trust->arg1, x, flags); |
| return X509_TRUST_UNTRUSTED; |
| } |
| |
| static int trust_compat(X509_TRUST *trust, X509 *x, int flags) |
| { |
| X509_check_purpose(x, -1, 0); |
| if(x->ex_flags & EXFLAG_SS) return X509_TRUST_TRUSTED; |
| else return X509_TRUST_UNTRUSTED; |
| } |
| |
| static int obj_trust(int id, X509 *x, int flags) |
| { |
| ASN1_OBJECT *obj; |
| size_t i; |
| X509_CERT_AUX *ax; |
| ax = x->aux; |
| if(!ax) return X509_TRUST_UNTRUSTED; |
| if(ax->reject) { |
| for(i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) { |
| obj = sk_ASN1_OBJECT_value(ax->reject, i); |
| if(OBJ_obj2nid(obj) == id) return X509_TRUST_REJECTED; |
| } |
| } |
| if(ax->trust) { |
| for(i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) { |
| obj = sk_ASN1_OBJECT_value(ax->trust, i); |
| if(OBJ_obj2nid(obj) == id) return X509_TRUST_TRUSTED; |
| } |
| } |
| return X509_TRUST_UNTRUSTED; |
| } |
| |