X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fx509%2Fx509_lu.c;h=cce90848a260a6f1c3d38421d92ea94ccdbee6bd;hp=a740510b076ab975a83595d6fd5dd4e946f9a774;hb=2c340864be11a523507f71d8be144f9c593b2be6;hpb=dfeab0689f69c0b4bd3480ffd37a9cacc2f17d9c

diff --git a/crypto/x509/x509_lu.c b/crypto/x509/x509_lu.c
index a740510b07..cce90848a2 100644
--- a/crypto/x509/x509_lu.c
+++ b/crypto/x509/x509_lu.c
@@ -58,19 +58,16 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include "lhash.h"
-#include "x509.h"
+#include <openssl/lhash.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
 
-static STACK *x509_store_meth=NULL;
-static STACK *x509_store_ctx_meth=NULL;
-
-X509_LOOKUP *X509_LOOKUP_new(method)
-X509_LOOKUP_METHOD *method;
+X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method)
 	{
 	X509_LOOKUP *ret;
 
-	ret=(X509_LOOKUP *)Malloc(sizeof(X509_LOOKUP));
-	if (ret == NULL) return(NULL);
+	ret=(X509_LOOKUP *)OPENSSL_malloc(sizeof(X509_LOOKUP));
+	if (ret == NULL) return NULL;
 
 	ret->init=0;
 	ret->skip=0;
@@ -79,163 +76,142 @@ X509_LOOKUP_METHOD *method;
 	ret->store_ctx=NULL;
 	if ((method->new_item != NULL) && !method->new_item(ret))
 		{
-		Free(ret);
-		return(NULL);
+		OPENSSL_free(ret);
+		return NULL;
 		}
-	return(ret);
+	return ret;
 	}
 
-void X509_LOOKUP_free(ctx)
-X509_LOOKUP *ctx;
+void X509_LOOKUP_free(X509_LOOKUP *ctx)
 	{
 	if (ctx == NULL) return;
 	if (	(ctx->method != NULL) &&
 		(ctx->method->free != NULL))
-		ctx->method->free(ctx);
-	Free(ctx);
+		(*ctx->method->free)(ctx);
+	OPENSSL_free(ctx);
 	}
 
-int X509_LOOKUP_init(ctx)
-X509_LOOKUP *ctx;
+int X509_LOOKUP_init(X509_LOOKUP *ctx)
 	{
-	if (ctx->method == NULL) return(0);
+	if (ctx->method == NULL) return 0;
 	if (ctx->method->init != NULL)
-		return(ctx->method->init(ctx));
+		return ctx->method->init(ctx);
 	else
-		return(1);
+		return 1;
 	}
 
-int X509_LOOKUP_shutdown(ctx)
-X509_LOOKUP *ctx;
+int X509_LOOKUP_shutdown(X509_LOOKUP *ctx)
 	{
-	if (ctx->method == NULL) return(0);
+	if (ctx->method == NULL) return 0;
 	if (ctx->method->shutdown != NULL)
-		return(ctx->method->shutdown(ctx));
+		return ctx->method->shutdown(ctx);
 	else
-		return(1);
+		return 1;
 	}
 
-int X509_LOOKUP_ctrl(ctx,cmd,argc,argl,ret)
-X509_LOOKUP *ctx;
-int cmd;
-char *argc;
-long argl;
-char **ret;
+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 == NULL) return -1;
 	if (ctx->method->ctrl != NULL)
-		return(ctx->method->ctrl(ctx,cmd,argc,argl,ret));
+		return ctx->method->ctrl(ctx,cmd,argc,argl,ret);
 	else
-		return(1);
+		return 1;
 	}
 
-int X509_LOOKUP_by_subject(ctx,type,name,ret)
-X509_LOOKUP *ctx;
-int type;
-X509_NAME *name;
-X509_OBJECT *ret;
+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));
+		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(ctx,type,name,serial,ret)
-X509_LOOKUP *ctx;
-int type;
-X509_NAME *name;
-ASN1_INTEGER *serial;
-X509_OBJECT *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));
+		return X509_LU_FAIL;
+	return ctx->method->get_by_issuer_serial(ctx,type,name,serial,ret);
 	}
 
-int X509_LOOKUP_by_fingerprint(ctx,type,bytes,len,ret)
-X509_LOOKUP *ctx;
-int type;
-unsigned char *bytes;
-int len;
-X509_OBJECT *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));
+		return X509_LU_FAIL;
+	return ctx->method->get_by_fingerprint(ctx,type,bytes,len,ret);
 	}
 
-int X509_LOOKUP_by_alias(ctx,type,str,len,ret)
-X509_LOOKUP *ctx;
-int type;
-char *str;
-int len;
-X509_OBJECT *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,str,len,ret));
+		return X509_LU_FAIL;
+	return ctx->method->get_by_alias(ctx,type,str,len,ret);
 	}
 
-static unsigned long x509_object_hash(a)
-X509_OBJECT *a;
-	{
-	unsigned long h;
-
-	switch (a->type)
-		{
-	case X509_LU_X509:
-		h=X509_NAME_hash(a->data.x509->cert_info->subject);
-		break;
-	case X509_LU_CRL:
-		h=X509_NAME_hash(a->data.crl->crl->issuer);
-		break;
+  
+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();
+		/* abort(); */
+		return 0;
 		}
-	return(h);
+	return ret;
 	}
 
-static int x509_object_cmp(a,b)
-X509_OBJECT *a,*b;
+X509_STORE *X509_STORE_new(void)
 	{
-	int ret;
+	X509_STORE *ret;
 
-	ret=(a->type - b->type);
-	if (ret) return(ret);
-	switch (a->type)
+	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))
 		{
-	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();
+		sk_X509_OBJECT_free(ret->objs);
+		OPENSSL_free(ret);
+		return NULL;
 		}
-	return(ret);
-	}
 
-X509_STORE *X509_STORE_new()
-	{
-	X509_STORE *ret;
-
-	if ((ret=(X509_STORE *)Malloc(sizeof(X509_STORE))) == NULL)
-		return(NULL);
-	ret->certs=lh_new(x509_object_hash,x509_object_cmp);
-	ret->cache=1;
-	ret->get_cert_methods=sk_new_null();
-	ret->verify=NULL;
-	ret->verify_cb=NULL;
-	memset(&ret->ex_data,0,sizeof(CRYPTO_EX_DATA));
 	ret->references=1;
-	return(ret);
+	return ret;
 	}
 
-static void cleanup(a)
-X509_OBJECT *a;
+static void cleanup(X509_OBJECT *a)
 	{
 	if (a->type == X509_LU_X509)
 		{
@@ -246,90 +222,105 @@ X509_OBJECT *a;
 		X509_CRL_free(a->data.crl);
 		}
 	else
-		abort();
+		{
+		/* abort(); */
+		}
 
-	Free(a);
+	OPENSSL_free(a);
 	}
 
-void X509_STORE_free(vfy)
-X509_STORE *vfy;
+void X509_STORE_free(X509_STORE *vfy)
 	{
 	int i;
-	STACK *sk;
+	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_num(sk); i++)
+	for (i=0; i<sk_X509_LOOKUP_num(sk); i++)
 		{
-		lu=(X509_LOOKUP *)sk_value(sk,i);
+		lu=sk_X509_LOOKUP_value(sk,i);
 		X509_LOOKUP_shutdown(lu);
 		X509_LOOKUP_free(lu);
 		}
-	sk_free(sk);
+	sk_X509_LOOKUP_free(sk);
+	sk_X509_OBJECT_pop_free(vfy->objs, cleanup);
 
-	CRYPTO_free_ex_data(x509_store_meth,(char *)vfy,&vfy->ex_data);
-	lh_doall(vfy->certs,cleanup);
-	lh_free(vfy->certs);
-	Free(vfy);
+	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(v,m)
-X509_STORE *v;
-X509_LOOKUP_METHOD *m;
+X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m)
 	{
 	int i;
-	STACK *sk;
+	STACK_OF(X509_LOOKUP) *sk;
 	X509_LOOKUP *lu;
 
 	sk=v->get_cert_methods;
-	for (i=0; i<sk_num(sk); i++)
+	for (i=0; i<sk_X509_LOOKUP_num(sk); i++)
 		{
-		lu=(X509_LOOKUP *)sk_value(sk,i);
+		lu=sk_X509_LOOKUP_value(sk,i);
 		if (m == lu->method)
 			{
-			return(lu);
+			return lu;
 			}
 		}
 	/* a new one */
 	lu=X509_LOOKUP_new(m);
 	if (lu == NULL)
-		return(NULL);
+		return NULL;
 	else
 		{
 		lu->store_ctx=v;
-		if (sk_push(v->get_cert_methods,(char *)lu))
-			return(lu);
+		if (sk_X509_LOOKUP_push(v->get_cert_methods,lu))
+			return lu;
 		else
 			{
 			X509_LOOKUP_free(lu);
-			return(NULL);
+			return NULL;
 			}
 		}
 	}
 
-int X509_STORE_get_by_subject(vs,type,name,ret)
-X509_STORE_CTX *vs;
-int type;
-X509_NAME *name;
-X509_OBJECT *ret;
+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;
 
-	tmp=X509_OBJECT_retrieve_by_subject(ctx->certs,type,name);
+	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)
+	if (tmp == NULL || type == X509_LU_CRL)
 		{
-		for (i=vs->current_method; i<sk_num(ctx->get_cert_methods); i++)
+		for (i=vs->current_method; i<sk_X509_LOOKUP_num(ctx->get_cert_methods); i++)
 			{
-			lu=(X509_LOOKUP *)sk_value(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);
+				return j;
 				}
 			else if (j)
 				{
@@ -339,7 +330,7 @@ X509_OBJECT *ret;
 			}
 		vs->current_method=0;
 		if (tmp == NULL)
-			return(0);
+			return 0;
 		}
 
 /*	if (ret->data.ptr != NULL)
@@ -350,11 +341,76 @@ X509_OBJECT *ret;
 
 	X509_OBJECT_up_ref_count(ret);
 
-	return(1);
+	return 1;
 	}
 
-void X509_OBJECT_up_ref_count(a)
-X509_OBJECT *a;
+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)
 		{
@@ -367,8 +423,7 @@ X509_OBJECT *a;
 		}
 	}
 
-void X509_OBJECT_free_contents(a)
-X509_OBJECT *a;
+void X509_OBJECT_free_contents(X509_OBJECT *a)
 	{
 	switch (a->type)
 		{
@@ -381,16 +436,15 @@ X509_OBJECT *a;
 		}
 	}
 
-X509_OBJECT *X509_OBJECT_retrieve_by_subject(h,type,name)
-LHASH *h;
-int type;
-X509_NAME *name;
+static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, int type,
+	     X509_NAME *name, int *pnmatch)
 	{
-	X509_OBJECT stmp,*tmp;
+	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)
@@ -406,41 +460,281 @@ X509_NAME *name;
 		crl_info_s.issuer=name;
 		break;
 	default:
-		abort();
+		/* 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;
 
-	tmp=(X509_OBJECT *)lh_retrieve(h,(char *)&stmp);
-	return(tmp);
 	}
 
-void X509_STORE_CTX_init(ctx,store,x509,chain)
-X509_STORE_CTX *ctx;
-X509_STORE *store;
-X509 *x509;
-STACK *chain;
+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)
 	{
-	ctx->ctx=store;
-	ctx->current_method=0;
-	ctx->cert=x509;
-	ctx->untrusted=chain;
-	ctx->last_untrusted=0;
-	ctx->valid=0;
-	ctx->chain=NULL;
-	ctx->depth=10;
-	ctx->error=0;
-	ctx->current_cert=NULL;
-	memset(&(ctx->ex_data),0,sizeof(CRYPTO_EX_DATA));
+	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;
 	}
 
-void X509_STORE_CTX_cleanup(ctx)
-X509_STORE_CTX *ctx;
+
+/* 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)
 	{
-	if (ctx->chain != NULL)
+	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)
 		{
-		sk_pop_free(ctx->chain,X509_free);
-		ctx->chain=NULL;
+		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;
 		}
-	CRYPTO_free_ex_data(x509_store_ctx_meth,(char *)ctx,&(ctx->ex_data));
-	memset(&ctx->ex_data,0,sizeof(CRYPTO_EX_DATA));
+	/* 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)