解密ZEND加密后的PHP

#tar -xzf vld-0.8.0.tgz //解压
#mv vld-0.8.0 vld //重命名
#cd -R vld ../php-4.3.8/ext //拷贝vld目录到php的解压目录下的ext中
#cd php-4.3.8
#rm configure //删除configure,因为下面的buildconf会重新生成新的configure
#./buildconf //如果出现错误,就按提示加上相应的参数.
#./configure –with-mysql –with-apxs2=/usr/www/bin/apxs –enable-vld 重新检查php

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_vld.h"
#include "srm_oparray.h"

static zend_op_array* (*old_compile_file)(zend_file_handle* file_handle, int type TSRMLS_DC);
static zend_op_array* vld_compile_file(zend_file_handle*, int TSRMLS_DC);

static void (*old_execute)(zend_op_array *op_array TSRMLS_DC);
static void vld_execute(zend_op_array *op_array TSRMLS_DC);

function_entry vld_functions[] = {
{NULL, NULL, NULL}
};

zend_module_entry vld_module_entry = {
#if ZEND_MODULE_API_NO >= 20010901
STANDARD_MODULE_HEADER,
#endif
"vld",
vld_functions,
PHP_MINIT(vld),
PHP_MSHUTDOWN(vld),
PHP_RINIT(vld),
PHP_RSHUTDOWN(vld),
PHP_MINFO(vld),
#if ZEND_MODULE_API_NO >= 20010901
"0.8.0",
#endif
STANDARD_MODULE_PROPERTIES
};

#ifdef COMPILE_DL_VLD
ZEND_GET_MODULE(vld)
#endif

ZEND_BEGIN_MODULE_GLOBALS(vld)
int active;
int skip_prepend;
int skip_append;
int execute;
ZEND_END_MODULE_GLOBALS(vld)

ZEND_DECLARE_MODULE_GLOBALS(vld)

#ifdef ZTS
#define VLD_G(v) TSRMG(vld_globals_id, zend_vld_globals *, v)
#else
#define VLD_G(v) (vld_globals.v)
#endif

PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("vld.active", "0", PHP_INI_SYSTEM, OnUpdateBool, active, zend_vld_globals, vld_globals)
STD_PHP_INI_ENTRY("vld.skip_prepend", "0", PHP_INI_SYSTEM, OnUpdateBool, skip_prepend, zend_vld_globals, vld_globals)
STD_PHP_INI_ENTRY("vld.skip_append", "0", PHP_INI_SYSTEM, OnUpdateBool, skip_append, zend_vld_globals, vld_globals)
STD_PHP_INI_ENTRY("vld.execute", "1", PHP_INI_SYSTEM, OnUpdateBool, execute, zend_vld_globals, vld_globals)
PHP_INI_END()

static void vld_init_globals(zend_vld_globals *vld_globals)
{
vld_globals->active = 0;
vld_globals->skip_prepend = 0;
vld_globals->skip_append = 0;
vld_globals->execute = 1;
}

PHP_MINIT_FUNCTION(vld)
{
ZEND_INIT_MODULE_GLOBALS(vld, vld_init_globals, NULL);
REGISTER_INI_ENTRIES();
old_compile_file = zend_compile_file;
old_execute = zend_execute;

return SUCCESS;
}

PHP_MSHUTDOWN_FUNCTION(vld)
{
UNREGISTER_INI_ENTRIES();

zend_compile_file = old_compile_file;
zend_execute = old_execute;

return SUCCESS;
}

PHP_RINIT_FUNCTION(vld)
{
if (VLD_G(active)) {
zend_compile_file = vld_compile_file;
if (!VLD_G(execute)) {
zend_execute = vld_execute;
}
}
return SUCCESS;
}

PHP_RSHUTDOWN_FUNCTION(vld)
{
zend_compile_file = old_compile_file;
zend_execute = old_execute;

return SUCCESS;
}

PHP_MINFO_FUNCTION(vld)
{
php_info_print_table_start();
php_info_print_table_header(2, "vld support", "enabled");
php_info_print_table_end();

}

static int vld_check_fe (zend_op_array *fe, zend_bool *have_fe TSRMLS_DC)
{
if (fe->type == ZEND_USER_FUNCTION) {
*have_fe = 1;
}

return 0;
}

static int vld_dump_fe (zend_op_array *fe TSRMLS_DC)
{
if (fe->type == ZEND_USER_FUNCTION) {
fprintf(stderr, "Function %s:
", fe->function_name);
vld_dump_oparray(fe);
fprintf(stderr, "End of function %s.

", fe->function_name);
}

return ZEND_HASH_APPLY_KEEP;
}

#ifdef ZEND_ENGINE_2
static int vld_dump_cle (zend_class_entry **class_entry TSRMLS_DC)
#else
static int vld_dump_cle (zend_class_entry *class_entry TSRMLS_DC)
#endif
{
zend_class_entry *ce;
zend_bool have_fe = 0;

#ifdef ZEND_ENGINE_2
ce = *class_entry;
#else
ce = class_entry;
#endif

if (ce->type != ZEND_INTERNAL_CLASS) {
zend_hash_apply_with_argument(&ce->function_table, (apply_func_arg_t) vld_check_fe, (void *)&have_fe TSRMLS_CC);
if (have_fe) {
fprintf(stderr, "Class %s:
", ce->name);
zend_hash_apply(&ce->function_table, (apply_func_t) vld_dump_fe TSRMLS_CC);
fprintf(stderr, "End of class %s.

", ce->name);
} else {
fprintf(stderr, "Class %s: [no user functions]
", ce->name);
}
}

return ZEND_HASH_APPLY_KEEP;
}

/* {{{ zend_op_array vld_compile_file (file_handle, type)
* This function provides a hook for compilation */
static zend_op_array *vld_compile_file(zend_file_handle *file_handle, int type TSRMLS_DC)
{
zend_op_array *op_array;

if (!VLD_G(execute) &&
((VLD_G(skip_prepend) && PG(auto_prepend_file) && PG(auto_prepend_file)[0] && PG(auto_prepend_file) == file_handle->filename) ||
(VLD_G(skip_append) && PG(auto_append_file) && PG(auto_append_file)[0] && PG(auto_append_file) == file_handle->filename)))
{
zval nop;
ZVAL_STRINGL(&nop, "RETURN ;", 8, 0);
return compile_string(&nop, "NOP" TSRMLS_CC);;
}

op_array = old_compile_file (file_handle, type TSRMLS_CC);

if (op_array) {
vld_dump_oparray (op_array);
}

zend_hash_apply (CG(function_table), (apply_func_t) vld_dump_fe TSRMLS_CC);
zend_hash_apply (CG(class_table), (apply_func_t) vld_dump_cle TSRMLS_CC);

return op_array;
}
/* }}} */

/* {{{ void vld_execute(zend_op_array *op_array TSRMLS_DC)
* This function provides a hook for execution */
static void vld_execute(zend_op_array *op_array TSRMLS_DC)
{
// nothing to do
}
/* }}} */