sra/rpki.net - Dragon Research Labs RPKI Toolkit

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/* x509_trs.c */ /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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; }


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