/** BEGIN COPYRIGHT BLOCK
 * Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
 * Copyright (C) 2005 Red Hat, Inc.
 * All rights reserved.
 *
 * License: GPL (version 3 or any later version).
 * See LICENSE for details. 
 * END COPYRIGHT BLOCK **/

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include "rever.h"

static Slapi_PluginDesc pdesc_aes = { "aes-storage-scheme", VENDOR, DS_PACKAGE_VERSION, "AES storage scheme plugin" };
static Slapi_PluginDesc pdesc_des = { "des-storage-scheme", VENDOR, DS_PACKAGE_VERSION, "DES storage scheme plugin" };


static char *plugin_name = "ReverStoragePlugin";

#define AES_MECH 1
#define DES_MECH 2

int
aes_cmp( char *userpwd, char *dbpwd )
{
	char *cipher = NULL;
	int rc = 0;

	if ( encode(userpwd, &cipher, AES_MECH) != 0 ){
		rc = 1;
	} else {
		rc = strcmp(cipher, dbpwd);
	}
	slapi_ch_free_string(&cipher);

	return rc;
}

char *
aes_enc( char *pwd )
{
	char *cipher = NULL;

	if ( encode(pwd, &cipher, AES_MECH) != 0 ){
		return(NULL);
	} else {
		return( cipher );
	}
}

char *
aes_dec( char *pwd, char *alg )
{
	char *plain = NULL;

	if ( decode(pwd, &plain, AES_MECH, alg) != 0 ){
		return(NULL);
	} else {
		return( plain );
	}
}

int
aes_init( Slapi_PBlock *pb)
{
       char *name = slapi_ch_strdup(AES_REVER_SCHEME_NAME);
       int rc;

       slapi_log_error( SLAPI_LOG_PLUGIN, plugin_name, "=> aes_init\n" );

       rc = slapi_pblock_set( pb, SLAPI_PLUGIN_VERSION, (void *) SLAPI_PLUGIN_VERSION_01 );
       rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_DESCRIPTION, (void *)&pdesc_aes );
       rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_PWD_STORAGE_SCHEME_ENC_FN, (void *) aes_enc);
       rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_PWD_STORAGE_SCHEME_CMP_FN, (void *) aes_cmp );
       rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_PWD_STORAGE_SCHEME_DEC_FN, (void *) aes_dec );
       rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_PWD_STORAGE_SCHEME_NAME, name );

       init_pbe_plugin();

       slapi_log_error( SLAPI_LOG_PLUGIN, plugin_name, "<= aes_init %d\n", rc );

       return( rc );
}

int
des_cmp( char *userpwd, char *dbpwd )
{
	char *cipher = NULL;
	int rc = 0;

	if ( encode(userpwd, &cipher, DES_MECH) != 0 ){
		rc = 1;
	} else {
		rc = strcmp(cipher, dbpwd);
	}
	slapi_ch_free_string(&cipher);

	return rc;
}

char *
des_enc( char *pwd )
{
	char *cipher = NULL;
	
	if ( encode(pwd, &cipher, DES_MECH ) != 0 ){
		return(NULL);
	} else {
		return( cipher );
	}
}

char *
des_dec( char *pwd )
{
	char *plain = NULL;
	
	if ( decode(pwd, &plain, DES_MECH, NULL) != 0 ){
		return(NULL);
	} else {
		return( plain );
	}
}

int
des_init( Slapi_PBlock *pb )
{
	char *name = slapi_ch_strdup(DES_REVER_SCHEME_NAME);
	int	rc;

	slapi_log_error( SLAPI_LOG_PLUGIN, plugin_name, "=> des_init\n" );

	rc = slapi_pblock_set( pb, SLAPI_PLUGIN_VERSION, (void *) SLAPI_PLUGIN_VERSION_01 );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_DESCRIPTION, (void *)&pdesc_des );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_PWD_STORAGE_SCHEME_ENC_FN, (void *) des_enc);
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_PWD_STORAGE_SCHEME_CMP_FN, (void *) des_cmp );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_PWD_STORAGE_SCHEME_DEC_FN, (void *) des_dec );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_PWD_STORAGE_SCHEME_NAME, name );

	init_pbe_plugin();

	slapi_log_error( SLAPI_LOG_PLUGIN, plugin_name, "<= des_init %d\n", rc );

	return( rc );
}
