+ int i, idx, cnt;
+ STACK_OF(X509_CRL) *sk;
+ X509_CRL *x;
+ X509_OBJECT *obj, xobj;
+ sk = sk_X509_CRL_new_null();
+ CRYPTO_r_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_r_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_r_lock(CRYPTO_LOCK_X509_STORE);
+ idx = x509_object_idx_cnt(ctx->ctx->objs,X509_LU_CRL, nm, &cnt);
+ if (idx < 0)
+ {
+ CRYPTO_r_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_r_unlock(CRYPTO_LOCK_X509_STORE);
+ X509_CRL_free(x);
+ sk_X509_CRL_pop_free(sk, X509_CRL_free);
+ return NULL;
+ }
+ }
+ CRYPTO_r_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;
+ xn=X509_get_issuer_name(x);
+ ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
+ if (ok != X509_LU_X509)