/* crypto/x509/x509_lu.c */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * 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 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 acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS 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 AUTHOR OR 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. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include #include #include #include #include #include X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method) { X509_LOOKUP *ret; ret=(X509_LOOKUP *)OPENSSL_malloc(sizeof(X509_LOOKUP)); if (ret == NULL) return NULL; ret->init=0; ret->skip=0; ret->method=method; ret->method_data=NULL; ret->store_ctx=NULL; if ((method->new_item != NULL) && !method->new_item(ret)) { OPENSSL_free(ret); return NULL; } return ret; } void X509_LOOKUP_free(X509_LOOKUP *ctx) { if (ctx == NULL) return; if ( (ctx->method != NULL) && (ctx->method->free != NULL)) (*ctx->method->free)(ctx); OPENSSL_free(ctx); } int X509_LOOKUP_init(X509_LOOKUP *ctx) { if (ctx->method == NULL) return 0; if (ctx->method->init != NULL) return ctx->method->init(ctx); else return 1; } int X509_LOOKUP_shutdown(X509_LOOKUP *ctx) { if (ctx->method == NULL) return 0; if (ctx->method->shutdown != NULL) return ctx->method->shutdown(ctx); else return 1; } int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl, char **ret) { if (ctx->method == NULL) return -1; if (ctx->method->ctrl != NULL) return ctx->method->ctrl(ctx,cmd,argc,argl,ret); else return 1; } int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name, X509_OBJECT *ret) { if ((ctx->method == NULL) || (ctx->method->get_by_subject == NULL)) return X509_LU_FAIL; if (ctx->skip) return 0; return ctx->method->get_by_subject(ctx,type,name,ret); } int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name, ASN1_INTEGER *serial, X509_OBJECT *ret) { if ((ctx->method == NULL) || (ctx->method->get_by_issuer_serial == NULL)) return X509_LU_FAIL; return ctx->method->get_by_issuer_serial(ctx,type,name,serial,ret); } int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type, unsigned char *bytes, int len, X509_OBJECT *ret) { if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL)) return X509_LU_FAIL; return ctx->method->get_by_fingerprint(ctx,type,bytes,len,ret); } int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str, int len, X509_OBJECT *ret) { if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL)) return X509_LU_FAIL; return ctx->method->get_by_alias(ctx,type,str,len,ret); } static int x509_object_cmp(const X509_OBJECT **a, const X509_OBJECT **b) { int ret; ret=((*a)->type - (*b)->type); if (ret) return ret; switch ((*a)->type) { case X509_LU_X509: ret=X509_subject_name_cmp((*a)->data.x509,(*b)->data.x509); break; case X509_LU_CRL: ret=X509_CRL_cmp((*a)->data.crl,(*b)->data.crl); break; default: /* abort(); */ return 0; } return ret; } X509_STORE *X509_STORE_new(void) { X509_STORE *ret; if ((ret=(X509_STORE *)OPENSSL_malloc(sizeof(X509_STORE))) == NULL) return NULL; memset(ret, 0, sizeof(*ret)); ret->objs = sk_X509_OBJECT_new(x509_object_cmp); ret->cache = 1; ret->get_cert_methods = sk_X509_LOOKUP_new_null(); if ((ret->param = X509_VERIFY_PARAM_new()) == NULL) goto err; if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data)) goto err; ret->references = 1; return ret; err: if (ret) { if (ret->param) X509_VERIFY_PARAM_free(ret->param); if (ret->get_cert_methods) sk_X509_LOOKUP_free(ret->get_cert_methods); if (ret->objs) sk_X509_OBJECT_free(ret->objs); OPENSSL_free(ret); } return NULL; } static void cleanup(X509_OBJECT *a) { if (a->type == X509_LU_X509) { X509_free(a->data.x509); } else if (a->type == X509_LU_CRL) { X509_CRL_free(a->data.crl); } else { /* abort(); */ } OPENSSL_free(a); } void X509_STORE_free(X509_STORE *vfy) { int i; size_t j; STACK_OF(X509_LOOKUP) *sk; X509_LOOKUP *lu; if (vfy == NULL) return; i=CRYPTO_add(&vfy->references,-1,CRYPTO_LOCK_X509_STORE); #ifdef REF_PRINT REF_PRINT("X509_STORE",vfy); #endif if (i > 0) return; #ifdef REF_CHECK if (i < 0) { fprintf(stderr,"X509_STORE_free, bad reference count\n"); abort(); /* ok */ } #endif sk=vfy->get_cert_methods; for (j=0; jobjs, cleanup); CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, vfy, &vfy->ex_data); if (vfy->param) X509_VERIFY_PARAM_free(vfy->param); OPENSSL_free(vfy); } X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m) { size_t i; STACK_OF(X509_LOOKUP) *sk; X509_LOOKUP *lu; sk=v->get_cert_methods; for (i=0; imethod) { return lu; } } /* a new one */ lu=X509_LOOKUP_new(m); if (lu == NULL) return NULL; else { lu->store_ctx=v; if (sk_X509_LOOKUP_push(v->get_cert_methods,lu)) return lu; else { X509_LOOKUP_free(lu); return NULL; } } } int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name, X509_OBJECT *ret) { X509_STORE *ctx=vs->ctx; X509_LOOKUP *lu; X509_OBJECT stmp,*tmp; int i,j; CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); tmp=X509_OBJECT_retrieve_by_subject(ctx->objs,type,name); CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); if (tmp == NULL || type == X509_LU_CRL) { for (i=vs->current_method; i<(int)sk_X509_LOOKUP_num(ctx->get_cert_methods); i++) { lu=sk_X509_LOOKUP_value(ctx->get_cert_methods,i); j=X509_LOOKUP_by_subject(lu,type,name,&stmp); if (j < 0) { vs->current_method=j; return j; } else if (j) { tmp= &stmp; break; } } vs->current_method=0; if (tmp == NULL) return 0; } /* if (ret->data.ptr != NULL) X509_OBJECT_free_contents(ret); */ ret->type=tmp->type; ret->data.ptr=tmp->data.ptr; X509_OBJECT_up_ref_count(ret); return 1; } int X509_STORE_add_cert(X509_STORE *ctx, X509 *x) { X509_OBJECT *obj; int ret=1; if (x == NULL) return 0; obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT)); if (obj == NULL) { OPENSSL_PUT_ERROR(X509, X509_STORE_add_cert, ERR_R_MALLOC_FAILURE); return 0; } obj->type=X509_LU_X509; obj->data.x509=x; CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); X509_OBJECT_up_ref_count(obj); if (X509_OBJECT_retrieve_match(ctx->objs, obj)) { X509_OBJECT_free_contents(obj); OPENSSL_free(obj); OPENSSL_PUT_ERROR(X509, X509_STORE_add_cert, X509_R_CERT_ALREADY_IN_HASH_TABLE); ret=0; } else sk_X509_OBJECT_push(ctx->objs, obj); CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); return ret; } int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x) { X509_OBJECT *obj; int ret=1; if (x == NULL) return 0; obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT)); if (obj == NULL) { OPENSSL_PUT_ERROR(X509, X509_STORE_add_crl, ERR_R_MALLOC_FAILURE); return 0; } obj->type=X509_LU_CRL; obj->data.crl=x; CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); X509_OBJECT_up_ref_count(obj); if (X509_OBJECT_retrieve_match(ctx->objs, obj)) { X509_OBJECT_free_contents(obj); OPENSSL_free(obj); OPENSSL_PUT_ERROR(X509, X509_STORE_add_crl, X509_R_CERT_ALREADY_IN_HASH_TABLE); ret=0; } else sk_X509_OBJECT_push(ctx->objs, obj); CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); return ret; } void X509_OBJECT_up_ref_count(X509_OBJECT *a) { switch (a->type) { case X509_LU_X509: X509_up_ref(a->data.x509); break; case X509_LU_CRL: CRYPTO_add(&a->data.crl->references,1,CRYPTO_LOCK_X509_CRL); break; } } void X509_OBJECT_free_contents(X509_OBJECT *a) { switch (a->type) { case X509_LU_X509: X509_free(a->data.x509); break; case X509_LU_CRL: X509_CRL_free(a->data.crl); break; } } static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, int type, X509_NAME *name, int *pnmatch) { X509_OBJECT stmp; X509 x509_s; X509_CINF cinf_s; X509_CRL crl_s; X509_CRL_INFO crl_info_s; size_t idx; stmp.type=type; switch (type) { case X509_LU_X509: stmp.data.x509= &x509_s; x509_s.cert_info= &cinf_s; cinf_s.subject=name; break; case X509_LU_CRL: stmp.data.crl= &crl_s; crl_s.crl= &crl_info_s; crl_info_s.issuer=name; break; default: /* abort(); */ return -1; } idx = -1; if (sk_X509_OBJECT_find(h, &idx, &stmp) && pnmatch) { int tidx; const X509_OBJECT *tobj, *pstmp; *pnmatch = 1; pstmp = &stmp; for (tidx = idx + 1; tidx < (int)sk_X509_OBJECT_num(h); tidx++) { tobj = sk_X509_OBJECT_value(h, tidx); if (x509_object_cmp(&tobj, &pstmp)) break; (*pnmatch)++; } } return idx; } int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type, X509_NAME *name) { return x509_object_idx_cnt(h, type, name, NULL); } X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h, int type, X509_NAME *name) { int idx; idx = X509_OBJECT_idx_by_subject(h, type, name); if (idx==-1) return NULL; return sk_X509_OBJECT_value(h, idx); } STACK_OF(X509)* X509_STORE_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm) { int i, idx, cnt; STACK_OF(X509) *sk; X509 *x; X509_OBJECT *obj; sk = sk_X509_new_null(); CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt); if (idx < 0) { /* Nothing found in cache: do lookup to possibly add new * objects to cache */ X509_OBJECT xobj; CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); if (!X509_STORE_get_by_subject(ctx, X509_LU_X509, nm, &xobj)) { sk_X509_free(sk); return NULL; } X509_OBJECT_free_contents(&xobj); CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); idx = x509_object_idx_cnt(ctx->ctx->objs,X509_LU_X509,nm, &cnt); if (idx < 0) { CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); sk_X509_free(sk); return NULL; } } for (i = 0; i < cnt; i++, idx++) { obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx); x = obj->data.x509; if (!sk_X509_push(sk, X509_up_ref(x))) { CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); X509_free(x); sk_X509_pop_free(sk, X509_free); return NULL; } } CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); return sk; } STACK_OF(X509_CRL)* X509_STORE_get1_crls(X509_STORE_CTX *ctx, X509_NAME *nm) { int i, idx, cnt; STACK_OF(X509_CRL) *sk; X509_CRL *x; X509_OBJECT *obj, xobj; sk = sk_X509_CRL_new_null(); CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); /* Check cache first */ idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_CRL, nm, &cnt); /* Always do lookup to possibly add new CRLs to cache */ CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); if (!X509_STORE_get_by_subject(ctx, X509_LU_CRL, nm, &xobj)) { sk_X509_CRL_free(sk); return NULL; } X509_OBJECT_free_contents(&xobj); CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); idx = x509_object_idx_cnt(ctx->ctx->objs,X509_LU_CRL, nm, &cnt); if (idx < 0) { CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); sk_X509_CRL_free(sk); return NULL; } for (i = 0; i < cnt; i++, idx++) { obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx); x = obj->data.crl; CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509_CRL); if (!sk_X509_CRL_push(sk, x)) { CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); X509_CRL_free(x); sk_X509_CRL_pop_free(sk, X509_CRL_free); return NULL; } } CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); return sk; } X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x) { size_t idx, i; X509_OBJECT *obj; if (!sk_X509_OBJECT_find(h, &idx, x)) { return NULL; } if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL)) return sk_X509_OBJECT_value(h, idx); for (i = idx; i < sk_X509_OBJECT_num(h); i++) { obj = sk_X509_OBJECT_value(h, i); if (x509_object_cmp((const X509_OBJECT **)&obj, (const X509_OBJECT **)&x)) return NULL; if (x->type == X509_LU_X509) { if (!X509_cmp(obj->data.x509, x->data.x509)) return obj; } else if (x->type == X509_LU_CRL) { if (!X509_CRL_match(obj->data.crl, x->data.crl)) return obj; } else return obj; } return NULL; } /* Try to get issuer certificate from store. Due to limitations * of the API this can only retrieve a single certificate matching * a given subject name. However it will fill the cache with all * matching certificates, so we can examine the cache for all * matches. * * Return values are: * 1 lookup successful. * 0 certificate not found. * -1 some other error. */ int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x) { X509_NAME *xn; X509_OBJECT obj, *pobj; int ok, idx, ret; size_t i; xn=X509_get_issuer_name(x); ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj); if (ok != X509_LU_X509) { if (ok == X509_LU_RETRY) { X509_OBJECT_free_contents(&obj); OPENSSL_PUT_ERROR(X509, X509_STORE_CTX_get1_issuer, X509_R_SHOULD_RETRY); return -1; } else if (ok != X509_LU_FAIL) { X509_OBJECT_free_contents(&obj); /* not good :-(, break anyway */ return -1; } return 0; } /* If certificate matches all OK */ if (ctx->check_issued(ctx, x, obj.data.x509)) { *issuer = obj.data.x509; return 1; } X509_OBJECT_free_contents(&obj); /* Else find index of first cert accepted by 'check_issued' */ ret = 0; CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); idx = X509_OBJECT_idx_by_subject(ctx->ctx->objs, X509_LU_X509, xn); if (idx != -1) /* should be true as we've had at least one match */ { /* Look through all matching certs for suitable issuer */ for (i = idx; i < sk_X509_OBJECT_num(ctx->ctx->objs); i++) { pobj = sk_X509_OBJECT_value(ctx->ctx->objs, i); /* See if we've run past the matches */ if (pobj->type != X509_LU_X509) break; if (X509_NAME_cmp(xn, X509_get_subject_name(pobj->data.x509))) break; if (ctx->check_issued(ctx, x, pobj->data.x509)) { *issuer = pobj->data.x509; X509_OBJECT_up_ref_count(pobj); ret = 1; break; } } } CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); return ret; } int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags) { return X509_VERIFY_PARAM_set_flags(ctx->param, flags); } int X509_STORE_set_depth(X509_STORE *ctx, int depth) { X509_VERIFY_PARAM_set_depth(ctx->param, depth); return 1; } int X509_STORE_set_purpose(X509_STORE *ctx, int purpose) { return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose); } int X509_STORE_set_trust(X509_STORE *ctx, int trust) { return X509_VERIFY_PARAM_set_trust(ctx->param, trust); } int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *param) { return X509_VERIFY_PARAM_set1(ctx->param, param); } void X509_STORE_set_verify_cb(X509_STORE *ctx, int (*verify_cb)(int, X509_STORE_CTX *)) { ctx->verify_cb = verify_cb; } void X509_STORE_set_lookup_crls_cb(X509_STORE *ctx, STACK_OF(X509_CRL)* (*cb)(X509_STORE_CTX *ctx, X509_NAME *nm)) { ctx->lookup_crls = cb; } X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx) { return ctx->ctx; }