Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 922 insertions, 0 deletions

diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/x509/x509_lu.c b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/x509/x509_lu.c
new file mode 100644
index 000000000..641a41c35
--- /dev/null
+++ b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/x509/x509_lu.c
@@ -0,0 +1,922 @@
+/*
+ * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include "internal/cryptlib.h"
+#include "internal/refcount.h"
+#include <openssl/x509.h>
+#include "crypto/x509.h"
+#include <openssl/x509v3.h>
+#include "x509_local.h"
+
+X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method)
+{
+    X509_LOOKUP *ret = OPENSSL_zalloc(sizeof(*ret));
+
+    if (ret == NULL) {
+        X509err(X509_F_X509_LOOKUP_NEW, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    ret->method = method;
+    if (method->new_item != NULL && method->new_item(ret) == 0) {
+        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_STORE_lock(X509_STORE *s)
+{
+    return CRYPTO_THREAD_write_lock(s->lock);
+}
+
+int X509_STORE_unlock(X509_STORE *s)
+{
+    return CRYPTO_THREAD_unlock(s->lock);
+}
+
+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, X509_LOOKUP_TYPE type,
+                           X509_NAME *name, X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_subject == NULL))
+        return 0;
+    if (ctx->skip)
+        return 0;
+    return ctx->method->get_by_subject(ctx, type, name, ret);
+}
+
+int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
+                                 X509_NAME *name, ASN1_INTEGER *serial,
+                                 X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_issuer_serial == NULL))
+        return 0;
+    return ctx->method->get_by_issuer_serial(ctx, type, name, serial, ret);
+}
+
+int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
+                               const unsigned char *bytes, int len,
+                               X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL))
+        return 0;
+    return ctx->method->get_by_fingerprint(ctx, type, bytes, len, ret);
+}
+
+int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
+                         const char *str, int len, X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL))
+        return 0;
+    return ctx->method->get_by_alias(ctx, type, str, len, ret);
+}
+
+int X509_LOOKUP_set_method_data(X509_LOOKUP *ctx, void *data)
+{
+    ctx->method_data = data;
+    return 1;
+}
+
+void *X509_LOOKUP_get_method_data(const X509_LOOKUP *ctx)
+{
+    return ctx->method_data;
+}
+
+X509_STORE *X509_LOOKUP_get_store(const X509_LOOKUP *ctx)
+{
+    return ctx->store_ctx;
+}
+
+
+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;
+    case X509_LU_NONE:
+        /* abort(); */
+        return 0;
+    }
+    return ret;
+}
+
+X509_STORE *X509_STORE_new(void)
+{
+    X509_STORE *ret = OPENSSL_zalloc(sizeof(*ret));
+
+    if (ret == NULL) {
+        X509err(X509_F_X509_STORE_NEW, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    if ((ret->objs = sk_X509_OBJECT_new(x509_object_cmp)) == NULL) {
+        X509err(X509_F_X509_STORE_NEW, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    ret->cache = 1;
+    if ((ret->get_cert_methods = sk_X509_LOOKUP_new_null()) == NULL) {
+        X509err(X509_F_X509_STORE_NEW, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    if ((ret->param = X509_VERIFY_PARAM_new()) == NULL) {
+        X509err(X509_F_X509_STORE_NEW, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data)) {
+        X509err(X509_F_X509_STORE_NEW, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    ret->lock = CRYPTO_THREAD_lock_new();
+    if (ret->lock == NULL) {
+        X509err(X509_F_X509_STORE_NEW, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    ret->references = 1;
+    return ret;
+
+err:
+    X509_VERIFY_PARAM_free(ret->param);
+    sk_X509_OBJECT_free(ret->objs);
+    sk_X509_LOOKUP_free(ret->get_cert_methods);
+    OPENSSL_free(ret);
+    return NULL;
+}
+
+void X509_STORE_free(X509_STORE *vfy)
+{
+    int i;
+    STACK_OF(X509_LOOKUP) *sk;
+    X509_LOOKUP *lu;
+
+    if (vfy == NULL)
+        return;
+    CRYPTO_DOWN_REF(&vfy->references, &i, vfy->lock);
+    REF_PRINT_COUNT("X509_STORE", vfy);
+    if (i > 0)
+        return;
+    REF_ASSERT_ISNT(i < 0);
+
+    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, X509_OBJECT_free);
+
+    CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, vfy, &vfy->ex_data);
+    X509_VERIFY_PARAM_free(vfy->param);
+    CRYPTO_THREAD_lock_free(vfy->lock);
+    OPENSSL_free(vfy);
+}
+
+int X509_STORE_up_ref(X509_STORE *vfy)
+{
+    int i;
+
+    if (CRYPTO_UP_REF(&vfy->references, &i, vfy->lock) <= 0)
+        return 0;
+
+    REF_PRINT_COUNT("X509_STORE", a);
+    REF_ASSERT_ISNT(i < 2);
+    return ((i > 1) ? 1 : 0);
+}
+
+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) {
+        X509err(X509_F_X509_STORE_ADD_LOOKUP, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    lu->store_ctx = v;
+    if (sk_X509_LOOKUP_push(v->get_cert_methods, lu))
+        return lu;
+    /* malloc failed */
+    X509err(X509_F_X509_STORE_ADD_LOOKUP, ERR_R_MALLOC_FAILURE);
+    X509_LOOKUP_free(lu);
+    return NULL;
+}
+
+X509_OBJECT *X509_STORE_CTX_get_obj_by_subject(X509_STORE_CTX *vs,
+                                               X509_LOOKUP_TYPE type,
+                                               X509_NAME *name)
+{
+    X509_OBJECT *ret = X509_OBJECT_new();
+
+    if (ret == NULL)
+        return NULL;
+    if (!X509_STORE_CTX_get_by_subject(vs, type, name, ret)) {
+        X509_OBJECT_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+int X509_STORE_CTX_get_by_subject(X509_STORE_CTX *vs, X509_LOOKUP_TYPE type,
+                                  X509_NAME *name, X509_OBJECT *ret)
+{
+    X509_STORE *store = vs->ctx;
+    X509_LOOKUP *lu;
+    X509_OBJECT stmp, *tmp;
+    int i, j;
+
+    if (store == NULL)
+        return 0;
+
+    stmp.type = X509_LU_NONE;
+    stmp.data.ptr = NULL;
+
+
+    X509_STORE_lock(store);
+    tmp = X509_OBJECT_retrieve_by_subject(store->objs, type, name);
+    X509_STORE_unlock(store);
+
+    if (tmp == NULL || type == X509_LU_CRL) {
+        for (i = 0; i < sk_X509_LOOKUP_num(store->get_cert_methods); i++) {
+            lu = sk_X509_LOOKUP_value(store->get_cert_methods, i);
+            j = X509_LOOKUP_by_subject(lu, type, name, &stmp);
+            if (j) {
+                tmp = &stmp;
+                break;
+            }
+        }
+        if (tmp == NULL)
+            return 0;
+    }
+
+    if (!X509_OBJECT_up_ref_count(tmp))
+        return 0;
+
+    ret->type = tmp->type;
+    ret->data.ptr = tmp->data.ptr;
+
+    return 1;
+}
+
+static int x509_store_add(X509_STORE *store, void *x, int crl) {
+    X509_OBJECT *obj;
+    int ret = 0, added = 0;
+
+    if (x == NULL)
+        return 0;
+    obj = X509_OBJECT_new();
+    if (obj == NULL)
+        return 0;
+
+    if (crl) {
+        obj->type = X509_LU_CRL;
+        obj->data.crl = (X509_CRL *)x;
+    } else {
+        obj->type = X509_LU_X509;
+        obj->data.x509 = (X509 *)x;
+    }
+    if (!X509_OBJECT_up_ref_count(obj)) {
+        obj->type = X509_LU_NONE;
+        X509_OBJECT_free(obj);
+        return 0;
+    }
+
+    X509_STORE_lock(store);
+    if (X509_OBJECT_retrieve_match(store->objs, obj)) {
+        ret = 1;
+    } else {
+        added = sk_X509_OBJECT_push(store->objs, obj);
+        ret = added != 0;
+    }
+    X509_STORE_unlock(store);
+
+    if (added == 0)             /* obj not pushed */
+        X509_OBJECT_free(obj);
+
+    return ret;
+}
+
+int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
+{
+    if (!x509_store_add(ctx, x, 0)) {
+        X509err(X509_F_X509_STORE_ADD_CERT, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    return 1;
+}
+
+int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
+{
+    if (!x509_store_add(ctx, x, 1)) {
+        X509err(X509_F_X509_STORE_ADD_CRL, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    return 1;
+}
+
+int X509_OBJECT_up_ref_count(X509_OBJECT *a)
+{
+    switch (a->type) {
+    case X509_LU_NONE:
+        break;
+    case X509_LU_X509:
+        return X509_up_ref(a->data.x509);
+    case X509_LU_CRL:
+        return X509_CRL_up_ref(a->data.crl);
+    }
+    return 1;
+}
+
+X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a)
+{
+    if (a == NULL || a->type != X509_LU_X509)
+        return NULL;
+    return a->data.x509;
+}
+
+X509_CRL *X509_OBJECT_get0_X509_CRL(X509_OBJECT *a)
+{
+    if (a == NULL || a->type != X509_LU_CRL)
+        return NULL;
+    return a->data.crl;
+}
+
+X509_LOOKUP_TYPE X509_OBJECT_get_type(const X509_OBJECT *a)
+{
+    return a->type;
+}
+
+X509_OBJECT *X509_OBJECT_new(void)
+{
+    X509_OBJECT *ret = OPENSSL_zalloc(sizeof(*ret));
+
+    if (ret == NULL) {
+        X509err(X509_F_X509_OBJECT_NEW, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    ret->type = X509_LU_NONE;
+    return ret;
+}
+
+static void x509_object_free_internal(X509_OBJECT *a)
+{
+    if (a == NULL)
+        return;
+    switch (a->type) {
+    case X509_LU_NONE:
+        break;
+    case X509_LU_X509:
+        X509_free(a->data.x509);
+        break;
+    case X509_LU_CRL:
+        X509_CRL_free(a->data.crl);
+        break;
+    }
+}
+
+int X509_OBJECT_set1_X509(X509_OBJECT *a, X509 *obj)
+{
+    if (a == NULL || !X509_up_ref(obj))
+        return 0;
+
+    x509_object_free_internal(a);
+    a->type = X509_LU_X509;
+    a->data.x509 = obj;
+    return 1;
+}
+
+int X509_OBJECT_set1_X509_CRL(X509_OBJECT *a, X509_CRL *obj)
+{
+    if (a == NULL || !X509_CRL_up_ref(obj))
+        return 0;
+
+    x509_object_free_internal(a);
+    a->type = X509_LU_CRL;
+    a->data.crl = obj;
+    return 1;
+}
+
+void X509_OBJECT_free(X509_OBJECT *a)
+{
+    x509_object_free_internal(a);
+    OPENSSL_free(a);
+}
+
+static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, X509_LOOKUP_TYPE type,
+                               X509_NAME *name, int *pnmatch)
+{
+    X509_OBJECT stmp;
+    X509 x509_s;
+    X509_CRL crl_s;
+    int idx;
+
+    stmp.type = type;
+    switch (type) {
+    case X509_LU_X509:
+        stmp.data.x509 = &x509_s;
+        x509_s.cert_info.subject = name;
+        break;
+    case X509_LU_CRL:
+        stmp.data.crl = &crl_s;
+        crl_s.crl.issuer = name;
+        break;
+    case X509_LU_NONE:
+        /* 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, X509_LOOKUP_TYPE 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,
+                                             X509_LOOKUP_TYPE 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_OBJECT) *X509_STORE_get0_objects(X509_STORE *v)
+{
+    return v->objs;
+}
+
+STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
+{
+    int i, idx, cnt;
+    STACK_OF(X509) *sk = NULL;
+    X509 *x;
+    X509_OBJECT *obj;
+    X509_STORE *store = ctx->ctx;
+
+    if (store == NULL)
+        return NULL;
+
+    X509_STORE_lock(store);
+    idx = x509_object_idx_cnt(store->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 = X509_OBJECT_new();
+
+        X509_STORE_unlock(store);
+
+        if (xobj == NULL)
+            return NULL;
+        if (!X509_STORE_CTX_get_by_subject(ctx, X509_LU_X509, nm, xobj)) {
+            X509_OBJECT_free(xobj);
+            return NULL;
+        }
+        X509_OBJECT_free(xobj);
+        X509_STORE_lock(store);
+        idx = x509_object_idx_cnt(store->objs, X509_LU_X509, nm, &cnt);
+        if (idx < 0) {
+            X509_STORE_unlock(store);
+            return NULL;
+        }
+    }
+
+    sk = sk_X509_new_null();
+    for (i = 0; i < cnt; i++, idx++) {
+        obj = sk_X509_OBJECT_value(store->objs, idx);
+        x = obj->data.x509;
+        if (!X509_up_ref(x)) {
+            X509_STORE_unlock(store);
+            sk_X509_pop_free(sk, X509_free);
+            return NULL;
+        }
+        if (!sk_X509_push(sk, x)) {
+            X509_STORE_unlock(store);
+            X509_free(x);
+            sk_X509_pop_free(sk, X509_free);
+            return NULL;
+        }
+    }
+    X509_STORE_unlock(store);
+    return sk;
+}
+
+STACK_OF(X509_CRL) *X509_STORE_CTX_get1_crls(X509_STORE_CTX *ctx, X509_NAME *nm)
+{
+    int i, idx, cnt;
+    STACK_OF(X509_CRL) *sk = sk_X509_CRL_new_null();
+    X509_CRL *x;
+    X509_OBJECT *obj, *xobj = X509_OBJECT_new();
+    X509_STORE *store = ctx->ctx;
+
+    /* Always do lookup to possibly add new CRLs to cache */
+    if (sk == NULL
+            || xobj == NULL
+            || store == NULL
+            || !X509_STORE_CTX_get_by_subject(ctx, X509_LU_CRL, nm, xobj)) {
+        X509_OBJECT_free(xobj);
+        sk_X509_CRL_free(sk);
+        return NULL;
+    }
+    X509_OBJECT_free(xobj);
+    X509_STORE_lock(store);
+    idx = x509_object_idx_cnt(store->objs, X509_LU_CRL, nm, &cnt);
+    if (idx < 0) {
+        X509_STORE_unlock(store);
+        sk_X509_CRL_free(sk);
+        return NULL;
+    }
+
+    for (i = 0; i < cnt; i++, idx++) {
+        obj = sk_X509_OBJECT_value(store->objs, idx);
+        x = obj->data.crl;
+        if (!X509_CRL_up_ref(x)) {
+            X509_STORE_unlock(store);
+            sk_X509_CRL_pop_free(sk, X509_CRL_free);
+            return NULL;
+        }
+        if (!sk_X509_CRL_push(sk, x)) {
+            X509_STORE_unlock(store);
+            X509_CRL_free(x);
+            sk_X509_CRL_pop_free(sk, X509_CRL_free);
+            return NULL;
+        }
+    }
+    X509_STORE_unlock(store);
+    return sk;
+}
+
+X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h,
+                                        X509_OBJECT *x)
+{
+    int idx, i, num;
+    X509_OBJECT *obj;
+
+    idx = sk_X509_OBJECT_find(h, x);
+    if (idx < 0)
+        return NULL;
+    if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL))
+        return sk_X509_OBJECT_value(h, idx);
+    for (i = idx, num = sk_X509_OBJECT_num(h); i < num; 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 = X509_OBJECT_new(), *pobj = NULL;
+    X509_STORE *store = ctx->ctx;
+    int i, ok, idx, ret;
+
+    if (obj == NULL)
+        return -1;
+    *issuer = NULL;
+    xn = X509_get_issuer_name(x);
+    ok = X509_STORE_CTX_get_by_subject(ctx, X509_LU_X509, xn, obj);
+    if (ok != 1) {
+        X509_OBJECT_free(obj);
+        return 0;
+    }
+    /* If certificate matches all OK */
+    if (ctx->check_issued(ctx, x, obj->data.x509)) {
+        if (x509_check_cert_time(ctx, obj->data.x509, -1)) {
+            *issuer = obj->data.x509;
+            if (!X509_up_ref(*issuer)) {
+                *issuer = NULL;
+                ok = -1;
+            }
+            X509_OBJECT_free(obj);
+            return ok;
+        }
+    }
+    X509_OBJECT_free(obj);
+
+    if (store == NULL)
+        return 0;
+
+    /* Else find index of first cert accepted by 'check_issued' */
+    ret = 0;
+    X509_STORE_lock(store);
+    idx = X509_OBJECT_idx_by_subject(store->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(store->objs); i++) {
+            pobj = sk_X509_OBJECT_value(store->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;
+                ret = 1;
+                /*
+                 * If times check, exit with match,
+                 * otherwise keep looking. Leave last
+                 * match in issuer so we return nearest
+                 * match if no certificate time is OK.
+                 */
+
+                if (x509_check_cert_time(ctx, *issuer, -1))
+                    break;
+            }
+        }
+    }
+    if (*issuer && !X509_up_ref(*issuer)) {
+        *issuer = NULL;
+        ret = -1;
+    }
+    X509_STORE_unlock(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);
+}
+
+X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *ctx)
+{
+    return ctx->param;
+}
+
+void X509_STORE_set_verify(X509_STORE *ctx, X509_STORE_CTX_verify_fn verify)
+{
+    ctx->verify = verify;
+}
+
+X509_STORE_CTX_verify_fn X509_STORE_get_verify(X509_STORE *ctx)
+{
+    return ctx->verify;
+}
+
+void X509_STORE_set_verify_cb(X509_STORE *ctx,
+                              X509_STORE_CTX_verify_cb verify_cb)
+{
+    ctx->verify_cb = verify_cb;
+}
+
+X509_STORE_CTX_verify_cb X509_STORE_get_verify_cb(X509_STORE *ctx)
+{
+    return ctx->verify_cb;
+}
+
+void X509_STORE_set_get_issuer(X509_STORE *ctx,
+                               X509_STORE_CTX_get_issuer_fn get_issuer)
+{
+    ctx->get_issuer = get_issuer;
+}
+
+X509_STORE_CTX_get_issuer_fn X509_STORE_get_get_issuer(X509_STORE *ctx)
+{
+    return ctx->get_issuer;
+}
+
+void X509_STORE_set_check_issued(X509_STORE *ctx,
+                                 X509_STORE_CTX_check_issued_fn check_issued)
+{
+    ctx->check_issued = check_issued;
+}
+
+X509_STORE_CTX_check_issued_fn X509_STORE_get_check_issued(X509_STORE *ctx)
+{
+    return ctx->check_issued;
+}
+
+void X509_STORE_set_check_revocation(X509_STORE *ctx,
+                                     X509_STORE_CTX_check_revocation_fn check_revocation)
+{
+    ctx->check_revocation = check_revocation;
+}
+
+X509_STORE_CTX_check_revocation_fn X509_STORE_get_check_revocation(X509_STORE *ctx)
+{
+    return ctx->check_revocation;
+}
+
+void X509_STORE_set_get_crl(X509_STORE *ctx,
+                            X509_STORE_CTX_get_crl_fn get_crl)
+{
+    ctx->get_crl = get_crl;
+}
+
+X509_STORE_CTX_get_crl_fn X509_STORE_get_get_crl(X509_STORE *ctx)
+{
+    return ctx->get_crl;
+}
+
+void X509_STORE_set_check_crl(X509_STORE *ctx,
+                              X509_STORE_CTX_check_crl_fn check_crl)
+{
+    ctx->check_crl = check_crl;
+}
+
+X509_STORE_CTX_check_crl_fn X509_STORE_get_check_crl(X509_STORE *ctx)
+{
+    return ctx->check_crl;
+}
+
+void X509_STORE_set_cert_crl(X509_STORE *ctx,
+                             X509_STORE_CTX_cert_crl_fn cert_crl)
+{
+    ctx->cert_crl = cert_crl;
+}
+
+X509_STORE_CTX_cert_crl_fn X509_STORE_get_cert_crl(X509_STORE *ctx)
+{
+    return ctx->cert_crl;
+}
+
+void X509_STORE_set_check_policy(X509_STORE *ctx,
+                                 X509_STORE_CTX_check_policy_fn check_policy)
+{
+    ctx->check_policy = check_policy;
+}
+
+X509_STORE_CTX_check_policy_fn X509_STORE_get_check_policy(X509_STORE *ctx)
+{
+    return ctx->check_policy;
+}
+
+void X509_STORE_set_lookup_certs(X509_STORE *ctx,
+                                 X509_STORE_CTX_lookup_certs_fn lookup_certs)
+{
+    ctx->lookup_certs = lookup_certs;
+}
+
+X509_STORE_CTX_lookup_certs_fn X509_STORE_get_lookup_certs(X509_STORE *ctx)
+{
+    return ctx->lookup_certs;
+}
+
+void X509_STORE_set_lookup_crls(X509_STORE *ctx,
+                                X509_STORE_CTX_lookup_crls_fn lookup_crls)
+{
+    ctx->lookup_crls = lookup_crls;
+}
+
+X509_STORE_CTX_lookup_crls_fn X509_STORE_get_lookup_crls(X509_STORE *ctx)
+{
+    return ctx->lookup_crls;
+}
+
+void X509_STORE_set_cleanup(X509_STORE *ctx,
+                            X509_STORE_CTX_cleanup_fn ctx_cleanup)
+{
+    ctx->cleanup = ctx_cleanup;
+}
+
+X509_STORE_CTX_cleanup_fn X509_STORE_get_cleanup(X509_STORE *ctx)
+{
+    return ctx->cleanup;
+}
+
+int X509_STORE_set_ex_data(X509_STORE *ctx, int idx, void *data)
+{
+    return CRYPTO_set_ex_data(&ctx->ex_data, idx, data);
+}
+
+void *X509_STORE_get_ex_data(X509_STORE *ctx, int idx)
+{
+    return CRYPTO_get_ex_data(&ctx->ex_data, idx);
+}
+
+X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx)
+{
+    return ctx->ctx;
+}