diff options
Diffstat (limited to 'openssl/crypto/x509/x509_trs.c')
| -rw-r--r-- | openssl/crypto/x509/x509_trs.c | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/openssl/crypto/x509/x509_trs.c b/openssl/crypto/x509/x509_trs.c new file mode 100644 index 000000000..ed1870058 --- /dev/null +++ b/openssl/crypto/x509/x509_trs.c @@ -0,0 +1,287 @@ +/* x509_trs.c */ +/* 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 <stdio.h> +#include "cryptlib.h" +#include <openssl/x509v3.h> + + +static int tr_cmp(const X509_TRUST * const *a, + const X509_TRUST * const *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, "compatible", 0, NULL}, +{X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL}, +{X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Server", NID_server_auth, NULL}, +{X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL}, +{X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, "Object Signer", NID_code_sign, NULL}, +{X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL}, +{X509_TRUST_OCSP_REQUEST, 0, trust_1oid, "OCSP request", NID_ad_OCSP, NULL} +}; + +#define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST)) + +IMPLEMENT_STACK_OF(X509_TRUST) + +static STACK_OF(X509_TRUST) *trtable = NULL; + +static int tr_cmp(const X509_TRUST * const *a, + const X509_TRUST * const *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; + 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; + int idx; + if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX)) + return id - X509_TRUST_MIN; + tmp.trust = id; + if(!trtable) return -1; + idx = sk_X509_TRUST_find(trtable, &tmp); + if(idx == -1) return -1; + return idx + X509_TRUST_COUNT; +} + +int X509_TRUST_set(int *t, int trust) +{ + if(X509_TRUST_get_by_id(trust) == -1) { + X509err(X509_F_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; + /* 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)))) { + X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE); + return 0; + } + trtmp->flags = X509_TRUST_DYNAMIC; + } else trtmp = X509_TRUST_get0(idx); + + /* OPENSSL_free existing name if dynamic */ + if(trtmp->flags & X509_TRUST_DYNAMIC_NAME) OPENSSL_free(trtmp->name); + /* dup supplied name */ + if(!(trtmp->name = BUF_strdup(name))) { + X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE); + return 0; + } + /* 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))) { + X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE); + return 0; + } + if (!sk_X509_TRUST_push(trtable, trtmp)) { + X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE); + 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; + int 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; +} + |