/***********************************************************************

????Copyright?2006-2007?Ma?Bingyao

????These?sources?is?free?software.?Redistributions?of?source?code?must
????retain?the?above?copyright?notice.?Redistributions?in?binary?form
????must?reproduce?the?above?copyright?notice.?You?can?redistribute?it
????freely.?You?can?use?it?with?any?free?or?commercial?software.

????These?sources?is?distributed?in?the?hope?that?it?will?be?useful
????but?WITHOUT?ANY?WARRANTY.?Without?even?the?implied?warranty?of
????MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.

????????You?may?contact?the?author?by:
???????????e-mail:??andot@coolcode.cn

*************************************************************************/
#ifdef?HAVE_CONFIG_H
#include?“config.h“
#endif

#include?“php.h“

#if?HAVE_XXTEA
#include?“php_xxtea.h“
#include?“ext/standard/info.h“?/*?for?phpinfo（）?functions?*/
#include?“xxtea.h“

/*?compiled?function?list?so?Zend?knows?what‘s?in?this?module?*/
zend_function_entry?xxtea_functions[]?=
{
????ZEND_FE（xxtea_encrypt?NULL）
????ZEND_FE（xxtea_decrypt?NULL）
????ZEND_FE（xxtea_info?NULL）
????{NULL?NULL?NULL}
};

/*?compiled?module?information?*/
zend_module_entry?xxtea_module_entry?=
{
????STANDARD_MODULE_HEADER
????XXTEA_MODULE_NAME
????xxtea_functions
????ZEND_MINIT（xxtea）
????ZEND_MSHUTDOWN（xxtea）
????NULL
????NULL
????ZEND_MINFO（xxtea）
????XXTEA_VERSION
????STANDARD_MODULE_PROPERTIES
};

/*?implement?standard?“stub“?routine?to?introduce?ourselves?to?Zend?*/
#if?defined（COMPILE_DL_XXTEA）
ZEND_GET_MODULE（xxtea）
#endif

static?xxtea_long?*xxtea_to_long_array（unsigned?char?*data?xxtea_long?len?int?include_length?xxtea_long?*ret_len）?{
????xxtea_long?i?n?*result;
	n?=?len?>>?2;
????n?=?（（（len?&?3）?==?0）???n?:?n?+?1）;
????if?（include_length）?{
????????result?=?（xxtea_long?*）emalloc（（n?+?1）?<????????result[n]?=?len;
	????*ret_len?=?n?+?1;
	}?else?{
????????result?=?（xxtea_long?*）emalloc（n?<	????*ret_len?=?n;
????}
	memset（result?0?n?<	for?（i?=?0;?i?????????result[i?>>?2]?|=?（xxtea_long）data[i]?<????}
????return?result;
}

static?unsigned?char?*xxtea_to_byte_array（xxtea_long?*data?xxtea_long?len?int?include_length?xxtea_long?*ret_len）?{
????xxtea_long?i?n?m;
????unsigned?char?*result;
????n?=?len?<????if?（include_length）?{
????????m?=?data[len?-?1];
????????if?（（m??n?-?4））?return?NULL;
????????n?=?m;
????}
????result?=?（unsigned?char?*）emalloc（n?+?1）;
	for?（i?=?0;?i?????????result[i]?=?（unsigned?char）（（data[i?>>?2]?>>?（（i?&?3）?<????}
	result[n]?=?‘\0‘;
	*ret_len?=?n;
	return?result;
}

static?unsigned?char?*php_xxtea_encrypt（unsigned?char?*data?xxtea_long?len?unsigned?char?*key?xxtea_long?*ret_len）?{
????unsigned?char?*result;
????xxtea_long?*v?*k?v_len?k_len;
????v?=?xxtea_to_long_array（data?len?1?&v_len）;
????k?=?xxtea_to_long_array（key?16?0?&k_len）;
????xxtea_long_encrypt（v?v_len?k）;
????result?