-Added OpenSSL and HTTPS support

-Built-in version of the library for Windows, Android and iOS (other OSs use system one)
-Small fixes all around

1 files changed, 716 insertions, 0 deletions

diff --git a/drivers/builtin_openssl/crypto/x509/x509_lu.c b/drivers/builtin_openssl/crypto/x509/x509_lu.c
new file mode 100644
index 0000000000..38525a8cdd
--- /dev/null
+++ b/drivers/builtin_openssl/crypto/x509/x509_lu.c
@@ -0,0 +1,716 @@
+/* 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->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;
+
+	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);
+	/* 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)
+	{
+	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;
+	}
+
+IMPLEMENT_STACK_OF(X509_LOOKUP)
+IMPLEMENT_STACK_OF(X509_OBJECT)