diff options
Diffstat (limited to 'thirdparty/openssl/crypto/x509/x509_lu.c')
| -rw-r--r-- | thirdparty/openssl/crypto/x509/x509_lu.c | 710 |
1 files changed, 710 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/x509/x509_lu.c b/thirdparty/openssl/crypto/x509/x509_lu.c new file mode 100644 index 0000000000..50120a4d70 --- /dev/null +++ b/thirdparty/openssl/crypto/x509/x509_lu.c @@ -0,0 +1,710 @@ +/* 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 <stdio.h> +#include "cryptlib.h" +#include <openssl/lhash.h> +#include <openssl/x509.h> +#include <openssl/x509v3.h> + +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 *const *a, + const X509_OBJECT *const *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; + ret->objs = sk_X509_OBJECT_new(x509_object_cmp); + ret->cache = 1; + ret->get_cert_methods = sk_X509_LOOKUP_new_null(); + ret->verify = 0; + ret->verify_cb = 0; + + if ((ret->param = X509_VERIFY_PARAM_new()) == NULL) + return NULL; + + ret->get_issuer = 0; + ret->check_issued = 0; + ret->check_revocation = 0; + ret->get_crl = 0; + ret->check_crl = 0; + ret->cert_crl = 0; + ret->lookup_certs = 0; + ret->lookup_crls = 0; + ret->cleanup = 0; + + if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data)) { + sk_X509_OBJECT_free(ret->objs); + OPENSSL_free(ret); + return NULL; + } + + ret->references = 1; + return ret; +} + +static void cleanup(X509_OBJECT *a) +{ + if (!a) + return; + 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; + 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 (i = 0; i < sk_X509_LOOKUP_num(sk); i++) { + lu = sk_X509_LOOKUP_value(sk, i); + X509_LOOKUP_shutdown(lu); + X509_LOOKUP_free(lu); + } + sk_X509_LOOKUP_free(sk); + sk_X509_OBJECT_pop_free(vfy->objs, 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) +{ + int i; + STACK_OF(X509_LOOKUP) *sk; + X509_LOOKUP *lu; + + sk = v->get_cert_methods; + for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) { + lu = sk_X509_LOOKUP_value(sk, i); + if (m == lu->method) { + 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 < 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) { + X509err(X509_F_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); + X509err(X509_F_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) { + X509err(X509_F_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); + X509err(X509_F_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: + CRYPTO_add(&a->data.x509->references, 1, CRYPTO_LOCK_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; + int 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 = sk_X509_OBJECT_find(h, &stmp); + if (idx >= 0 && pnmatch) { + int tidx; + const X509_OBJECT *tobj, *pstmp; + *pnmatch = 1; + pstmp = &stmp; + for (tidx = idx + 1; tidx < 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; + CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509); + if (!sk_X509_push(sk, 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); + + /* + * 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) +{ + int idx, i; + X509_OBJECT *obj; + idx = sk_X509_OBJECT_find(h, x); + if (idx == -1) + 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 i, ok, idx, ret; + 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); + X509err(X509_F_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; +} + +IMPLEMENT_STACK_OF(X509_LOOKUP) + +IMPLEMENT_STACK_OF(X509_OBJECT) |