/* crypto/x509/x509_vfy.h */
/* 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.]
 */

// #ifndef HEADER_X509_H
// public import deimos.openssl.x509;
// /* openssl/x509.h ends up #include-ing this file at about the only
//  * appropriate moment. */
// #endif

module deimos.openssl.x509_vfy;

import deimos.openssl._d_util;

import core.stdc.time;
import deimos.openssl.asn1; // Needed for ASN1_OBJECT.
import deimos.openssl.x509v3; // Needed for POLICYQUALINFO.

public import deimos.openssl.opensslconf;
version(OPENSSL_NO_LHASH) {} else {
public import deimos.openssl.lhash;
}
public import deimos.openssl.bio;
public import deimos.openssl.crypto;
public import deimos.openssl.symhacks;

extern (C):
nothrow:

version (none) {
/* Outer object */
struct x509_hash_dir_st {
	int num_dirs;
	char** dirs;
	int* dirs_type;
	int num_dirs_alloced;
	}
alias x509_hash_dir_st X509_HASH_DIR_CTX;
}

struct x509_file_st {
	int num_paths;	/* number of paths to files or directories */
	int num_alloced;
	char** paths;	/* the list of paths or directories */
	int* path_type;
	}
alias x509_file_st X509_CERT_FILE_CTX;

/*******************************/
/*
SSL_CTX -> X509_STORE
		-> X509_LOOKUP
			->X509_LOOKUP_METHOD
		-> X509_LOOKUP
			->X509_LOOKUP_METHOD

SSL	-> X509_STORE_CTX
		->X509_STORE

The X509_STORE holds the tables etc for verification stuff.
A X509_STORE_CTX is used while validating a single certificate.
The X509_STORE has X509_LOOKUPs for looking up certs.
The X509_STORE then calls a function to actually verify the
certificate chain.
*/

enum X509_LU_RETRY = -1;
enum X509_LU_FAIL = 0;
enum X509_LU_X509 = 1;
enum X509_LU_CRL = 2;
enum X509_LU_PKEY = 3;

struct x509_object_st
	{
	/* one of the above types */
	int type;
	union data_ {
		char* ptr;
		X509* x509;
		X509_CRL* crl;
		EVP_PKEY* pkey;
		}
	data_ data;
	}
alias x509_object_st X509_OBJECT;

alias x509_lookup_st X509_LOOKUP;

/+mixin DECLARE_STACK_OF!(X509_LOOKUP);+/
/+mixin DECLARE_STACK_OF!(X509_OBJECT);+/

/* This is a static that defines the function interface */
struct x509_lookup_method_st {
	const(char)* name;
	ExternC!(int function(X509_LOOKUP* ctx)) new_item;
	ExternC!(void function(X509_LOOKUP* ctx)) free;
	ExternC!(int function(X509_LOOKUP* ctx)) init_;
	ExternC!(int function(X509_LOOKUP* ctx)) shutdown;
	ExternC!(int function(X509_LOOKUP* ctx,int cmd,const(char)* argc,c_long argl,
			char** ret)) ctrl;
	ExternC!(int function(X509_LOOKUP* ctx,int type,X509_NAME* name,
			      X509_OBJECT* ret)) get_by_subject;
	ExternC!(int function(X509_LOOKUP* ctx,int type,X509_NAME* name,
				    ASN1_INTEGER* serial,X509_OBJECT* ret)) get_by_issuer_serial;
	ExternC!(int function(X509_LOOKUP* ctx,int type,
				  ubyte* bytes,int len,
				  X509_OBJECT* ret)) get_by_fingerprint;
	ExternC!(int function(X509_LOOKUP* ctx,int type,char* str,int len,
			    X509_OBJECT* ret)) get_by_alias;
	}
alias x509_lookup_method_st X509_LOOKUP_METHOD;

/* This structure hold all parameters associated with a verify operation
 * by including an X509_VERIFY_PARAM structure in related structures the
 * parameters used can be customized
 */

struct X509_VERIFY_PARAM_st {
	char* name;
	time_t check_time;	/* Time to use */
	c_ulong inh_flags; /* Inheritance flags */
	c_ulong flags;	/* Various verify flags */
	int purpose;		/* purpose to check untrusted certificates */
	int trust;		/* trust setting to check */
	int depth;		/* Verify depth */
	STACK_OF!(ASN1_OBJECT) *policies;	/* Permissible policies */
	}
alias X509_VERIFY_PARAM_st X509_VERIFY_PARAM;

/+mixin DECLARE_STACK_OF!(X509_VERIFY_PARAM);+/

/* This is used to hold everything.  It is used for all certificate
 * validation.  Once we have a certificate chain, the 'verify'
 * function is then called to actually check the cert chain. */
struct x509_store_st
	{
	/* The following is a cache of trusted certs */
	int cache; 	/* if true, stash any hits */
	STACK_OF!(X509_OBJECT) *objs;	/* Cache of all objects */

	/* These are external lookup methods */
	STACK_OF!(X509_LOOKUP) *get_cert_methods;

	X509_VERIFY_PARAM* param;

	/* Callbacks for various operations */
	ExternC!(int function(X509_STORE_CTX* ctx)) verify;	/* called to verify a certificate */
	ExternC!(int function(int ok,X509_STORE_CTX* ctx)) verify_cb;	/* error callback */
	ExternC!(int function(X509** issuer, X509_STORE_CTX* ctx, X509* x)) get_issuer;	/* get issuers cert from ctx */
	ExternC!(int function(X509_STORE_CTX* ctx, X509* x, X509* issuer)) check_issued; /* check issued */
	ExternC!(int function(X509_STORE_CTX* ctx)) check_revocation; /* Check revocation status of chain */
	ExternC!(int function(X509_STORE_CTX* ctx, X509_CRL** crl, X509* x)) get_crl; /* retrieve CRL */
	ExternC!(int function(X509_STORE_CTX* ctx, X509_CRL* crl)) check_crl; /* Check CRL validity */
	ExternC!(int function(X509_STORE_CTX* ctx, X509_CRL* crl, X509* x)) cert_crl; /* Check certificate against CRL */
	ExternC!(STACK_OF!(X509)* function(X509_STORE_CTX* ctx, X509_NAME* nm)) lookup_certs;
	ExternC!(STACK_OF!(X509_CRL)* function(X509_STORE_CTX* ctx, X509_NAME* nm)) lookup_crls;
	ExternC!(int function(X509_STORE_CTX* ctx)) cleanup;

	CRYPTO_EX_DATA ex_data;
	int references;
	} /* X509_STORE */;

int X509_STORE_set_depth(X509_STORE* store, int depth);

auto X509_STORE_set_verify_cb_func()(X509_STORE_CTX* ctx, typeof(X509_STORE_CTX.init.verify_cb) func) { ctx.verify_cb = func; }
auto X509_STORE_set_verify_func()(X509_STORE_CTX* ctx, typeof(X509_STORE_CTX.init.verify) func) { ctx.verify = func; }

/* This is the functions plus an instance of the local variables. */
struct x509_lookup_st
	{
	int init_;			/* have we been started */
	int skip;			/* don't use us. */
	X509_LOOKUP_METHOD* method;	/* the functions */
	char* method_data;		/* method data */

	X509_STORE* store_ctx;	/* who owns us */
	} /* X509_LOOKUP */;

/* This is a used when verifying cert chains.  Since the
 * gathering of the cert chain can take some time (and have to be
 * 'retried', this needs to be kept and passed around. */
struct x509_store_ctx_st
	{
	X509_STORE* ctx;
	int current_method;	/* used when looking up certs */

	/* The following are set by the caller */
	X509* cert;		/* The cert to check */
	STACK_OF!(X509) *untrusted;	/* chain of X509s - untrusted - passed in */
	STACK_OF!(X509_CRL) *crls;	/* set of CRLs passed in */

	X509_VERIFY_PARAM* param;
	void* other_ctx;	/* Other info for use with get_issuer() */

	/* Callbacks for various operations */
	ExternC!(int function(X509_STORE_CTX* ctx)) verify;	/* called to verify a certificate */
	ExternC!(int function(int ok,X509_STORE_CTX* ctx)) verify_cb;		/* error callback */
	ExternC!(int function(X509** issuer, X509_STORE_CTX* ctx, X509* x)) get_issuer;	/* get issuers cert from ctx */
	ExternC!(int function(X509_STORE_CTX* ctx, X509* x, X509* issuer)) check_issued; /* check issued */
	ExternC!(int function(X509_STORE_CTX* ctx)) check_revocation; /* Check revocation status of chain */
	ExternC!(int function(X509_STORE_CTX* ctx, X509_CRL** crl, X509* x)) get_crl; /* retrieve CRL */
	ExternC!(int function(X509_STORE_CTX* ctx, X509_CRL* crl)) check_crl; /* Check CRL validity */
	ExternC!(int function(X509_STORE_CTX* ctx, X509_CRL* crl, X509* x)) cert_crl; /* Check certificate against CRL */
	ExternC!(int function(X509_STORE_CTX* ctx)) check_policy;
	ExternC!(STACK_OF!(X509)* function(X509_STORE_CTX* ctx, X509_NAME* nm)) lookup_certs;
	ExternC!(STACK_OF!(X509_CRL)* function(X509_STORE_CTX* ctx, X509_NAME* nm)) lookup_crls;
	ExternC!(int function(X509_STORE_CTX* ctx)) cleanup;

	/* The following is built up */
	int valid;		/* if 0, rebuild chain */
	int last_untrusted;	/* index of last untrusted cert */
	STACK_OF!(X509) *chain; 		/* chain of X509s - built up and trusted */
	X509_POLICY_TREE* tree;	/* Valid policy tree */

	int explicit_policy;	/* Require explicit policy value */

	/* When something goes wrong, this is why */
	int error_depth;
	int error;
	X509* current_cert;
	X509* current_issuer;	/* cert currently being tested as valid issuer */
	X509_CRL* current_crl;	/* current CRL */

	int current_crl_score;  /* score of current CRL */
	uint current_reasons;  /* Reason mask */

	X509_STORE_CTX* parent; /* For CRL path validation: parent context */

	CRYPTO_EX_DATA ex_data;
	} /* X509_STORE_CTX */;

void X509_STORE_CTX_set_depth(X509_STORE_CTX* ctx, int depth);

auto X509_STORE_CTX_set_app_data()(X509_STORE_CTX* ctx, void* data) {
	return X509_STORE_CTX_set_ex_data(ctx,0,data);
}

auto X509_STORE_CTX_get_app_data()(X509_STORE_CTX* ctx) {
	return X509_STORE_CTX_get_ex_data(ctx,0);
}

enum X509_L_FILE_LOAD = 1;
enum X509_L_ADD_DIR = 2;

auto X509_LOOKUP_load_file()(X509_LOOKUP* x,const(char)* name, c_long type) {
	return X509_LOOKUP_ctrl((x),X509_L_FILE_LOAD,(name),(type),null);
}


auto X509_LOOKUP_add_dir()(X509_LOOKUP* x,const(char)* name, c_long type) {
	return X509_LOOKUP_ctrl((x),X509_L_ADD_DIR,(name),(type),null);
}

enum X509_V_OK = 0;
/* illegal error (for uninitialized values, to avoid X509_V_OK): 1 */

enum X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT = 2;
enum X509_V_ERR_UNABLE_TO_GET_CRL = 3;
enum X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE = 4;
enum X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE = 5;
enum X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY = 6;
enum X509_V_ERR_CERT_SIGNATURE_FAILURE = 7;
enum X509_V_ERR_CRL_SIGNATURE_FAILURE = 8;
enum X509_V_ERR_CERT_NOT_YET_VALID = 9;
enum X509_V_ERR_CERT_HAS_EXPIRED = 10;
enum X509_V_ERR_CRL_NOT_YET_VALID = 11;
enum X509_V_ERR_CRL_HAS_EXPIRED = 12;
enum X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD = 13;
enum X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD = 14;
enum X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD = 15;
enum X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD = 16;
enum X509_V_ERR_OUT_OF_MEM = 17;
enum X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT = 18;
enum X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN = 19;
enum X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY = 20;
enum X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE = 21;
enum X509_V_ERR_CERT_CHAIN_TOO_LONG = 22;
enum X509_V_ERR_CERT_REVOKED = 23;
enum X509_V_ERR_INVALID_CA = 24;
enum X509_V_ERR_PATH_LENGTH_EXCEEDED = 25;
enum X509_V_ERR_INVALID_PURPOSE = 26;
enum X509_V_ERR_CERT_UNTRUSTED = 27;
enum X509_V_ERR_CERT_REJECTED = 28;
/* These are 'informational' when looking for issuer cert */
enum X509_V_ERR_SUBJECT_ISSUER_MISMATCH = 29;
enum X509_V_ERR_AKID_SKID_MISMATCH = 30;
enum X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH = 31;
enum X509_V_ERR_KEYUSAGE_NO_CERTSIGN = 32;

enum X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER = 33;
enum X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION = 34;
enum X509_V_ERR_KEYUSAGE_NO_CRL_SIGN = 35;
enum X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION = 36;
enum X509_V_ERR_INVALID_NON_CA = 37;
enum X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED = 38;
enum X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE = 39;
enum X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED = 40;

enum X509_V_ERR_INVALID_EXTENSION = 41;
enum X509_V_ERR_INVALID_POLICY_EXTENSION = 42;
enum X509_V_ERR_NO_EXPLICIT_POLICY = 43;
enum X509_V_ERR_DIFFERENT_CRL_SCOPE = 44;
enum X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE = 45;

enum X509_V_ERR_UNNESTED_RESOURCE = 46;

enum X509_V_ERR_PERMITTED_VIOLATION = 47;
enum X509_V_ERR_EXCLUDED_VIOLATION = 48;
enum X509_V_ERR_SUBTREE_MINMAX = 49;
enum X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE = 51;
enum X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX = 52;
enum X509_V_ERR_UNSUPPORTED_NAME_SYNTAX = 53;
enum X509_V_ERR_CRL_PATH_VALIDATION_ERROR = 54;

/* The application is not happy */
enum X509_V_ERR_APPLICATION_VERIFICATION = 50;

/* Certificate verify flags */

/* Send issuer+subject checks to verify_cb */
enum X509_V_FLAG_CB_ISSUER_CHECK = 0x1;
/* Use check time instead of current time */
enum X509_V_FLAG_USE_CHECK_TIME = 0x2;
/* Lookup CRLs */
enum X509_V_FLAG_CRL_CHECK = 0x4;
/* Lookup CRLs for whole chain */
enum X509_V_FLAG_CRL_CHECK_ALL = 0x8;
/* Ignore unhandled critical extensions */
enum X509_V_FLAG_IGNORE_CRITICAL = 0x10;
/* Disable workarounds for broken certificates */
enum X509_V_FLAG_X509_STRICT = 0x20;
/* Enable proxy certificate validation */
enum X509_V_FLAG_ALLOW_PROXY_CERTS = 0x40;
/* Enable policy checking */
enum X509_V_FLAG_POLICY_CHECK = 0x80;
/* Policy variable require-explicit-policy */
enum X509_V_FLAG_EXPLICIT_POLICY = 0x100;
/* Policy variable inhibit-any-policy */
enum X509_V_FLAG_INHIBIT_ANY = 0x200;
/* Policy variable inhibit-policy-mapping */
enum X509_V_FLAG_INHIBIT_MAP = 0x400;
/* Notify callback that policy is OK */
enum X509_V_FLAG_NOTIFY_POLICY = 0x800;
/* Extended CRL features such as indirect CRLs, alternate CRL signing keys */
enum X509_V_FLAG_EXTENDED_CRL_SUPPORT = 0x1000;
/* Delta CRL support */
enum X509_V_FLAG_USE_DELTAS = 0x2000;
/* Check selfsigned CA signature */
enum X509_V_FLAG_CHECK_SS_SIGNATURE = 0x4000;


enum X509_VP_FLAG_DEFAULT = 0x1;
enum X509_VP_FLAG_OVERWRITE = 0x2;
enum X509_VP_FLAG_RESET_FLAGS = 0x4;
enum X509_VP_FLAG_LOCKED = 0x8;
enum X509_VP_FLAG_ONCE = 0x10;

/* Internal use: mask of policy related options */
enum X509_V_FLAG_POLICY_MASK = (X509_V_FLAG_POLICY_CHECK
				| X509_V_FLAG_EXPLICIT_POLICY
				| X509_V_FLAG_INHIBIT_ANY
				| X509_V_FLAG_INHIBIT_MAP);

int X509_OBJECT_idx_by_subject(STACK_OF!(X509_OBJECT) *h, int type,
	     X509_NAME* name);
X509_OBJECT* X509_OBJECT_retrieve_by_subject(STACK_OF!(X509_OBJECT) *h,int type,X509_NAME* name);
X509_OBJECT* X509_OBJECT_retrieve_match(STACK_OF!(X509_OBJECT) *h, X509_OBJECT* x);
void X509_OBJECT_up_ref_count(X509_OBJECT* a);
void X509_OBJECT_free_contents(X509_OBJECT* a);
X509_STORE* X509_STORE_new();
void X509_STORE_free(X509_STORE* v);

STACK_OF!(X509)* X509_STORE_get1_certs(X509_STORE_CTX* st, X509_NAME* nm);
STACK_OF!(X509_CRL)* X509_STORE_get1_crls(X509_STORE_CTX* st, X509_NAME* nm);
int X509_STORE_set_flags(X509_STORE* ctx, c_ulong flags);
int X509_STORE_set_purpose(X509_STORE* ctx, int purpose);
int X509_STORE_set_trust(X509_STORE* ctx, int trust);
int X509_STORE_set1_param(X509_STORE* ctx, X509_VERIFY_PARAM* pm);

void X509_STORE_set_verify_cb(X509_STORE* ctx,
				  ExternC!(int function(int, X509_STORE_CTX*)) verify_cb);

X509_STORE_CTX* X509_STORE_CTX_new();

int X509_STORE_CTX_get1_issuer(X509** issuer, X509_STORE_CTX* ctx, X509* x);

void X509_STORE_CTX_free(X509_STORE_CTX* ctx);
int X509_STORE_CTX_init(X509_STORE_CTX* ctx, X509_STORE* store,
			 X509* x509, STACK_OF!(X509) *chain);
void X509_STORE_CTX_trusted_stack(X509_STORE_CTX* ctx, STACK_OF!(X509) *sk);
void X509_STORE_CTX_cleanup(X509_STORE_CTX* ctx);

X509_LOOKUP* X509_STORE_add_lookup(X509_STORE* v, X509_LOOKUP_METHOD* m);

X509_LOOKUP_METHOD* X509_LOOKUP_hash_dir();
X509_LOOKUP_METHOD* X509_LOOKUP_file();

int X509_STORE_add_cert(X509_STORE* ctx, X509* x);
int X509_STORE_add_crl(X509_STORE* ctx, X509_CRL* x);

int X509_STORE_get_by_subject(X509_STORE_CTX* vs,int type,X509_NAME* name,
	X509_OBJECT* ret);

int X509_LOOKUP_ctrl(X509_LOOKUP* ctx, int cmd, const(char)* argc,
	c_long argl, char** ret);

version(OPENSSL_NO_STDIO) {} else {
int X509_load_cert_file(X509_LOOKUP* ctx, const(char)* file, int type);
int X509_load_crl_file(X509_LOOKUP* ctx, const(char)* file, int type);
int X509_load_cert_crl_file(X509_LOOKUP* ctx, const(char)* file, int type);
}


X509_LOOKUP* X509_LOOKUP_new(X509_LOOKUP_METHOD* method);
void X509_LOOKUP_free(X509_LOOKUP* ctx);
int X509_LOOKUP_init(X509_LOOKUP* ctx);
int X509_LOOKUP_by_subject(X509_LOOKUP* ctx, int type, X509_NAME* name,
	X509_OBJECT* ret);
int X509_LOOKUP_by_issuer_serial(X509_LOOKUP* ctx, int type, X509_NAME* name,
	ASN1_INTEGER* serial, X509_OBJECT* ret);
int X509_LOOKUP_by_fingerprint(X509_LOOKUP* ctx, int type,
	ubyte* bytes, int len, X509_OBJECT* ret);
int X509_LOOKUP_by_alias(X509_LOOKUP* ctx, int type, char* str,
	int len, X509_OBJECT* ret);
int X509_LOOKUP_shutdown(X509_LOOKUP* ctx);

version(OPENSSL_NO_STDIO) {} else {
int	X509_STORE_load_locations (X509_STORE* ctx,
		const(char)* file, const(char)* dir);
int	X509_STORE_set_default_paths(X509_STORE* ctx);
}

int X509_STORE_CTX_get_ex_new_index(c_long argl, void* argp, CRYPTO_EX_new* new_func,
	CRYPTO_EX_dup* dup_func, CRYPTO_EX_free* free_func);
int	X509_STORE_CTX_set_ex_data(X509_STORE_CTX* ctx,int idx,void* data);
void* 	X509_STORE_CTX_get_ex_data(X509_STORE_CTX* ctx,int idx);
int	X509_STORE_CTX_get_error(X509_STORE_CTX* ctx);
void	X509_STORE_CTX_set_error(X509_STORE_CTX* ctx,int s);
int	X509_STORE_CTX_get_error_depth(X509_STORE_CTX* ctx);
X509* 	X509_STORE_CTX_get_current_cert(X509_STORE_CTX* ctx);
X509* X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX* ctx);
X509_CRL* X509_STORE_CTX_get0_current_crl(X509_STORE_CTX* ctx);
X509_STORE_CTX* X509_STORE_CTX_get0_parent_ctx(X509_STORE_CTX* ctx);
STACK_OF!(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX* ctx);
STACK_OF!(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX* ctx);
void	X509_STORE_CTX_set_cert(X509_STORE_CTX* c,X509* x);
void	X509_STORE_CTX_set_chain(X509_STORE_CTX* c,STACK_OF!(X509) *sk);
void	X509_STORE_CTX_set0_crls(X509_STORE_CTX* c,STACK_OF!(X509_CRL) *sk);
int X509_STORE_CTX_set_purpose(X509_STORE_CTX* ctx, int purpose);
int X509_STORE_CTX_set_trust(X509_STORE_CTX* ctx, int trust);
int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX* ctx, int def_purpose,
				int purpose, int trust);
void X509_STORE_CTX_set_flags(X509_STORE_CTX* ctx, c_ulong flags);
void X509_STORE_CTX_set_time(X509_STORE_CTX* ctx, c_ulong flags,
								time_t t);
void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX* ctx,
				  ExternC!(int function(int, X509_STORE_CTX*)) verify_cb);

X509_POLICY_TREE* X509_STORE_CTX_get0_policy_tree(X509_STORE_CTX* ctx);
int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX* ctx);

X509_VERIFY_PARAM* X509_STORE_CTX_get0_param(X509_STORE_CTX* ctx);
void X509_STORE_CTX_set0_param(X509_STORE_CTX* ctx, X509_VERIFY_PARAM* param);
int X509_STORE_CTX_set_default(X509_STORE_CTX* ctx, const(char)* name);

/* X509_VERIFY_PARAM functions */

X509_VERIFY_PARAM* X509_VERIFY_PARAM_new();
void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM* param);
int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM* to,
						const(X509_VERIFY_PARAM)* from);
int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM* to,
						const(X509_VERIFY_PARAM)* from);
int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM* param, const(char)* name);
int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM* param, c_ulong flags);
int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM* param,
							c_ulong flags);
c_ulong X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM* param);
int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM* param, int purpose);
int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM* param, int trust);
void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM* param, int depth);
void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM* param, time_t t);
int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM* param,
						ASN1_OBJECT* policy);
int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM* param,
					STACK_OF!(ASN1_OBJECT) *policies);
int X509_VERIFY_PARAM_get_depth(const(X509_VERIFY_PARAM)* param);

int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM* param);
const(X509_VERIFY_PARAM)* X509_VERIFY_PARAM_lookup(const(char)* name);
void X509_VERIFY_PARAM_table_cleanup();

int X509_policy_check(X509_POLICY_TREE** ptree, int* pexplicit_policy,
			STACK_OF!(X509) *certs,
			STACK_OF!(ASN1_OBJECT) *policy_oids,
			uint flags);

void X509_policy_tree_free(X509_POLICY_TREE* tree);

int X509_policy_tree_level_count(const(X509_POLICY_TREE)* tree);
X509_POLICY_LEVEL* 
	X509_policy_tree_get0_level(const(X509_POLICY_TREE)* tree, int i);

STACK_OF!(X509_POLICY_NODE) *
	X509_policy_tree_get0_policies(const(X509_POLICY_TREE)* tree);

STACK_OF!(X509_POLICY_NODE) *
	X509_policy_tree_get0_user_policies(const(X509_POLICY_TREE)* tree);

int X509_policy_level_node_count(X509_POLICY_LEVEL* level);

X509_POLICY_NODE* X509_policy_level_get0_node(X509_POLICY_LEVEL* level, int i);

const(ASN1_OBJECT)* X509_policy_node_get0_policy(const(X509_POLICY_NODE)* node);

STACK_OF!(POLICYQUALINFO) *
	X509_policy_node_get0_qualifiers(const(X509_POLICY_NODE)* node);
const(X509_POLICY_NODE)* 
	X509_policy_node_get0_parent(const(X509_POLICY_NODE)* node);
