XCache is a fast, stable PHP opcode cacher that has been proven and is now running on production servers under high load. https://xcache.lighttpd.net/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

3181 lines
82 KiB

<?php
define('INDENT', "\t");
ini_set('error_reporting', E_ALL);
assert_options(ASSERT_ACTIVE, 0);
function color($str, $color = 33)
{
return "\x1B[{$color}m$str\x1B[0m";
}
function printBacktrace() // {{{
{
if (!$GLOBALS['__xcache_decompiler']->inComment++) {
echo '/*', PHP_EOL;
}
$backtrace = debug_backtrace();
foreach ($backtrace as $stack) {
$args = array();
foreach ($stack['args'] as $arg) {
if (is_scalar($arg)) {
$args[] = var_export($arg, true);
}
else if (is_array($arg)) {
$array = array();
foreach ($arg as $key => $value) {
$array[] = var_export($key, true) . " => " . (is_scalar($value) ? var_export($value, true) : gettype($value));
if (count($array) >= 5) {
$array[] = '...';
break;
}
}
$args[] = "array(" . implode(', ', $array) . ')';
}
else {
$args[] = gettype($arg);
}
}
printf("%d: %s::%s(%s)" . PHP_EOL
, $stack['line']
, isset($stack['class']) ? $stack['class'] : ''
, $stack['function']
, implode(', ', $args)
);
}
if (!--$GLOBALS['__xcache_decompiler']->inComment) {
echo '*/', PHP_EOL;
}
}
// }}}
function str($code, $indent = '') // {{{
{
if (is_array($code)) {
$array = array();
foreach ($code as $key => $value) {
$array[$key] = str($value, $indent);
}
return $array;
}
if (is_object($code)) {
$code = foldToCode($code, $indent);
return $code->toCode($indent);
}
return (string) $code;
}
// }}}
function unsetArray(&$array, $name) // {{{
{
unset($array[$name]);
}
// }}}
function foldToCode($src, $indent = '') // {{{ wrap or rewrap anything to Decompiler_Code
{
if (is_array($indent)) {
$indent = $indent['indent'];
}
if (!is_object($src)) {
return new Decompiler_Code($src);
}
if (!method_exists($src, 'toCode')) {
var_dump($src);
exit('no toCode');
}
if (get_class($src) != 'Decompiler_Code') {
// rewrap it
$src = new Decompiler_Code($src->toCode($indent));
}
return $src;
}
// }}}
function decompileAst($ast, $EX) // {{{
{
$kind = $ast['kind'];
$children = $ast['children'];
unset($ast['kind']);
unset($ast['children']);
switch ($kind) {
case ZEND_CONST:
return value($ast[0], $EX);
case XC_INIT_ARRAY:
$array = new Decompiler_Array();
for ($i = 0; $i < $children; $i += 2) {
if (isset($ast[$i + 1])) {
$key = decompileAst($ast[$i], $EX);
$value = decompileAst($ast[$i + 1], $EX);
$array->value[] = array($key, $value);
}
else {
$array->value[] = array(null, decompileAst($ast[$i], $EX));
}
}
return $array;
// ZEND_BOOL_AND: handled in binop
// ZEND_BOOL_OR: handled in binop
case ZEND_SELECT:
return new Decompiler_TriOp(
decompileAst($ast[0], $EX)
, decompileAst($ast[1], $EX)
, decompileAst($ast[2], $EX)
);
case ZEND_UNARY_PLUS:
return new Decompiler_Code('+' . str(decompileAst($ast[0], $EX)));
case ZEND_UNARY_MINUS:
return new Decompiler_Code('-' . str(decompileAst($ast[0], $EX)));
default:
$decompiler = $GLOBALS['__xcache_decompiler'];
if (isset($decompiler->binops[$kind])) {
return new Decompiler_Binop($decompiler
, decompileAst($ast[0], $EX)
, $kind
, decompileAst($ast[1], $EX)
);
}
return "un-handled kind $kind in zend_ast";
}
}
// }}}
function value($value, &$EX) // {{{
{
if (ZEND_ENGINE_2_6 && (xcache_get_type($value) & IS_CONSTANT_TYPE_MASK) == IS_CONSTANT_AST) {
return decompileAst(xcache_dasm_ast($value), $EX);
}
$originalValue = xcache_get_special_value($value);
if (isset($originalValue)) {
if ((xcache_get_type($value) & IS_CONSTANT_TYPE_MASK) == IS_CONSTANT) {
// constant
return $GLOBALS['__xcache_decompiler']->stripNamespace($originalValue);
}
$value = $originalValue;
}
if (is_a($value, 'Decompiler_Object')) {
// use as is
}
else if (is_array($value)) {
$value = new Decompiler_ConstArray($value, $EX);
}
else {
if (isset($EX['value2constant'][$value])) {
$value = new Decompiler_Code($EX['value2constant'][$value]);
}
else {
$value = new Decompiler_Value($value);
}
}
return $value;
}
// }}}
function unquoteName_($str, $asVariableName, $indent = '') // {{{
{
$str = str($str, $indent);
if (preg_match("!^'[\\w_][\\w\\d_\\\\]*'\$!", $str)) {
return str_replace('\\\\', '\\', substr($str, 1, -1));
}
else if ($asVariableName) {
return "{" . $str . "}";
}
else {
return $str;
}
}
// }}}
function unquoteVariableName($str, $indent = '') // {{{
{
return unquoteName_($str, true, $indent);
}
// }}}
function unquoteName($str, $indent = '') // {{{
{
return unquoteName_($str, false, $indent);
}
// }}}
class Decompiler_Object // {{{
{
}
// }}}
class Decompiler_Value extends Decompiler_Object // {{{
{
var $value;
function Decompiler_Value($value = null)
{
$this->value = $value;
}
function toCode($indent)
{
$code = var_export($this->value, true);
if (gettype($this->value) == 'string') {
switch ($this->value) {
case "\r":
return '"\\r"';
case "\n":
return '"\\n"';
case "\r\n":
return '"\\r\\n"';
}
$code = str_replace("\r\n", '\' . "\\r\\n" . \'', $code);
$code = str_replace("\r", '\' . "\\r" . \'', $code);
$code = str_replace("\n", '\' . "\\n" . \'', $code);
}
return $code;
}
}
// }}}
class Decompiler_Code extends Decompiler_Object // {{{
{
var $src;
function Decompiler_Code($src)
{
if (!assert('isset($src)')) {
printBacktrace();
}
$this->src = $src;
}
function toCode($indent)
{
return $this->src;
}
}
// }}}
class Decompiler_Binop extends Decompiler_Code // {{{
{
var $opc;
var $op1;
var $op2;
var $parent;
function Decompiler_Binop($parent, $op1, $opc, $op2)
{
$this->parent = &$parent;
$this->opc = $opc;
$this->op1 = $op1;
$this->op2 = $op2;
}
function toCode($indent)
{
$opstr = $this->parent->binops[$this->opc];
if (is_a($this->op1, 'Decompiler_TriOp') || is_a($this->op1, 'Decompiler_Binop') && $this->op1->opc != $this->opc) {
$op1 = "(" . str($this->op1, $indent) . ")";
}
else {
$op1 = $this->op1;
}
if (is_a($this->op2, 'Decompiler_TriOp') || is_a($this->op2, 'Decompiler_Binop') && $this->op2->opc != $this->opc && substr($opstr, -1) != '=') {
$op2 = "(" . str($this->op2, $indent) . ")";
}
else {
$op2 = $this->op2;
}
if (str($op1) == '0' && ($this->opc == XC_ADD || $this->opc == XC_SUB)) {
return $opstr . str($op2, $indent);
}
return str($op1, $indent) . ' ' . $opstr . ($this->opc == XC_ASSIGN_REF ? '' : ' ') . str($op2, $indent);
}
}
// }}}
class Decompiler_TriOp extends Decompiler_Code // {{{
{
var $condition;
var $trueValue;
var $falseValue;
function Decompiler_TriOp($condition, $trueValue, $falseValue)
{
$this->condition = $condition;
$this->trueValue = $trueValue;
$this->falseValue = $falseValue;
}
function toCode($indent)
{
$trueValue = $this->trueValue;
if (is_a($this->trueValue, 'Decompiler_TriOp')) {
$trueValue = "(" . str($trueValue, $indent) . ")";
}
$falseValue = $this->falseValue;
if (is_a($this->falseValue, 'Decompiler_TriOp')) {
$falseValue = "(" . str($falseValue, $indent) . ")";
}
return str($this->condition) . ' ? ' . str($trueValue) . ' : ' . str($falseValue);
}
}
// }}}
class Decompiler_Fetch extends Decompiler_Code // {{{
{
var $src;
var $fetchType;
function Decompiler_Fetch($src, $type, $globalSrc)
{
$this->src = $src;
$this->fetchType = $type;
$this->globalSrc = $globalSrc;
}
function toCode($indent)
{
switch ($this->fetchType) {
case ZEND_FETCH_LOCAL:
return '$' . $this->src;
case ZEND_FETCH_STATIC:
if (ZEND_ENGINE_2_3) {
// closure local variable?
return 'STR' . str($this->src);
}
else {
$EX = array();
return str(value($this->src, $EX));
}
die('static fetch cant to string');
case ZEND_FETCH_GLOBAL:
case ZEND_FETCH_GLOBAL_LOCK:
return $this->globalSrc;
default:
var_dump($this->fetchType);
assert(0);
}
}
}
// }}}
class Decompiler_Box // {{{
{
var $obj;
function Decompiler_Box(&$obj)
{
$this->obj = &$obj;
}
function toCode($indent)
{
return $this->obj->toCode($indent);
}
}
// }}}
class Decompiler_Dim extends Decompiler_Value // {{{
{
var $offsets = array();
var $isLast = false;
var $isObject = false;
var $assign = null;
function toCode($indent)
{
if (is_a($this->value, 'Decompiler_ListBox')) {
$exp = str($this->value->obj->src, $indent);
}
else {
$exp = str($this->value, $indent);
}
$last = count($this->offsets) - 1;
foreach ($this->offsets as $i => $dim) {
if ($this->isObject && $i == $last) {
$exp .= '->' . unquoteVariableName($dim, $indent);
}
else {
$exp .= '[' . str($dim, $indent) . ']';
}
}
return $exp;
}
}
// }}}
class Decompiler_DimBox extends Decompiler_Box // {{{
{
}
// }}}
class Decompiler_List extends Decompiler_Code // {{{
{
var $src;
var $dims = array();
var $everLocked = false;
function toCode($indent)
{
if (count($this->dims) == 1 && !$this->everLocked) {
$dim = $this->dims[0];
unset($dim->value);
$dim->value = $this->src;
if (!isset($dim->assign)) {
return str($dim, $indent);
}
return str($this->dims[0]->assign, $indent) . ' = ' . str($dim, $indent);
}
/* flatten dims */
$assigns = array();
foreach ($this->dims as $dim) {
$assign = &$assigns;
foreach ($dim->offsets as $offset) {
$assign = &$assign[$offset];
}
$assign = foldToCode($dim->assign, $indent);
}
return str($this->toList($assigns)) . ' = ' . str($this->src, $indent);
}
function toList($assigns)
{
$keys = array_keys($assigns);
if (count($keys) < 2) {
$keys[] = 0;
}
$max = call_user_func_array('max', $keys);
$list = "list(";
for ($i = 0; $i <= $max; $i++) {
if ($i) {
$list .= ', ';
}
if (!isset($assigns[$i])) {
continue;
}
if (is_array($assigns[$i])) {
$list .= $this->toList($assigns[$i]);
}
else {
$list .= $assigns[$i];
}
}
return $list . ')';
}
}
// }}}
class Decompiler_ListBox extends Decompiler_Box // {{{
{
}
// }}}
class Decompiler_Array extends Decompiler_Value // {{{
{
// emenets
function Decompiler_Array()
{
$this->value = array();
}
function toCode($indent)
{
$subindent = $indent . INDENT;
$elementsCode = array();
$index = 0;
foreach ($this->value as $element) {
list($key, $value) = $element;
if (!isset($key)) {
$key = $index++;
}
$elementsCode[] = array(str($key, $subindent), str($value, $subindent), $key, $value);
}
$exp = "array(";
$indent = $indent . INDENT;
$assocWidth = 0;
$multiline = 0;
$i = 0;
foreach ($elementsCode as $element) {
list($keyCode, $valueCode) = $element;
if ((string) $i !== $keyCode) {
$assocWidth = 1;
break;
}
++$i;
}
foreach ($elementsCode as $element) {
list($keyCode, $valueCode, $key, $value) = $element;
if ($assocWidth) {
$len = strlen($keyCode);
if ($assocWidth < $len) {
$assocWidth = $len;
}
}
if (is_array($value) || is_a($value, 'Decompiler_Array')) {
$multiline++;
}
}
$i = 0;
foreach ($elementsCode as $element) {
list($keyCode, $value) = $element;
if ($multiline) {
if ($i) {
$exp .= ",";
}
$exp .= PHP_EOL;
$exp .= $indent;
}
else {
if ($i) {
$exp .= ", ";
}
}
if ($assocWidth) {
if ($multiline) {
$exp .= sprintf("%-{$assocWidth}s => ", $keyCode);
}
else {
$exp .= $keyCode . ' => ';
}
}
$exp .= $value;
$i++;
}
if ($multiline) {
$exp .= PHP_EOL . "$indent)";
}
else {
$exp .= ")";
}
return $exp;
}
}
// }}}
class Decompiler_ConstArray extends Decompiler_Array // {{{
{
function Decompiler_ConstArray($array, &$EX)
{
$elements = array();
foreach ($array as $key => $value) {
if ((xcache_get_type($value) & IS_CONSTANT_INDEX)) {
$keyCode = $GLOBALS['__xcache_decompiler']->stripNamespace(
ZEND_ENGINE_2_3
? substr($key, 0, -2)
: $key
);
}
else {
$keyCode = value($key, $EX);
}
$elements[] = array($keyCode, value($value, $EX));
}
$this->value = $elements;
}
}
// }}}
class Decompiler_ForeachBox extends Decompiler_Box // {{{
{
var $iskey;
function toCode($indent)
{
return '#foreachBox#';
}
}
// }}}
class Decompiler
{
var $namespace;
var $namespaceDecided;
var $activeFile;
var $activeDir;
var $activeClass;
var $activeMethod;
var $activeFunction;
var $outputPhp;
var $outputOpcode;
var $inComment = 0;
function Decompiler($outputTypes)
{
$this->outputPhp = in_array('php', $outputTypes);
$this->outputOpcode = in_array('opcode', $outputTypes);
$GLOBALS['__xcache_decompiler'] = $this;
// {{{ testing
// XC_UNDEF XC_OP_DATA
$this->test = !empty($_ENV['XCACHE_DECOMPILER_TEST']);
$this->usedOps = array();
if ($this->test) {
$content = file_get_contents(__FILE__);
for ($i = 0; $opname = xcache_get_opcode($i); $i++) {
if (!preg_match("/\\bXC_" . $opname . "\\b(?!')/", $content)) {
echo "not recognized opcode ", $opname, PHP_EOL;
}
}
}
// }}}
// {{{ opinfo
$this->unaryops = array(
XC_BW_NOT => '~',
XC_BOOL_NOT => '!',
);
$this->binops = array(
XC_ADD => "+",
XC_ASSIGN_ADD => "+=",
XC_SUB => "-",
XC_ASSIGN_SUB => "-=",
XC_MUL => "*",
XC_ASSIGN_MUL => "*=",
XC_DIV => "/",
XC_ASSIGN_DIV => "/=",
XC_MOD => "%",
XC_ASSIGN_MOD => "%=",
XC_SL => "<<",
XC_ASSIGN_SL => "<<=",
XC_SR => ">>",
XC_ASSIGN_SR => ">>=",
XC_CONCAT => ".",
XC_ASSIGN_CONCAT => ".=",
XC_IS_IDENTICAL => "===",
XC_IS_NOT_IDENTICAL => "!==",
XC_IS_EQUAL => "==",
XC_IS_NOT_EQUAL => "!=",
XC_IS_SMALLER => "<",
XC_IS_SMALLER_OR_EQUAL => "<=",
XC_BW_OR => "|",
XC_ASSIGN_BW_OR => "|=",
XC_BW_AND => "&",
XC_ASSIGN_BW_AND => "&=",
XC_BW_XOR => "^",
XC_ASSIGN_BW_XOR => "^=",
XC_BOOL_XOR => "xor",
XC_ASSIGN => "=",
XC_ASSIGN_REF => "= &",
XC_JMP_SET => "?:",
XC_JMP_SET_VAR => "?:",
XC_JMPZ_EX => "&&",
XC_JMPNZ_EX => "||",
);
if (defined('IS_CONSTANT_AST')) {
$this->binops[ZEND_BOOL_AND] = '&&';
$this->binops[ZEND_BOOL_OR] = '||';
}
// }}}
$this->includeTypes = array( // {{{
ZEND_EVAL => 'eval',
ZEND_INCLUDE => 'include',
ZEND_INCLUDE_ONCE => 'include_once',
ZEND_REQUIRE => 'require',
ZEND_REQUIRE_ONCE => 'require_once',
);
// }}}
}
function detectNamespace($name) // {{{
{
if ($this->namespaceDecided) {
return;
}
if (strpos($name, '\\') !== false) {
$namespace = strtok($name, '\\');
if ($namespace == $this->namespace) {
return;
}
$this->namespace = $namespace;
echo 'namespace ', $this->namespace, ";", PHP_EOL, PHP_EOL;
}
$this->namespaceDecided = true;
}
// }}}
function stripNamespace($name) // {{{
{
if (!isset($name)) {
return $name;
}
$name = str($name);
$len = strlen($this->namespace) + 1;
if (substr($name, 0, $len) == $this->namespace . '\\') {
return substr($name, $len);
}
else {
return $name;
}
}
// }}}
function outputPhp($range) // {{{
{
$EX = &$range['EX'];
$needBlankline = isset($EX['lastBlock']);
$indent = $EX['indent'];
$curticks = 0;
for ($i = $range[0]; $i <= $range[1]; $i++) {
$op = $EX['opcodes'][$i];
if (isset($op['gofrom'])) {
if ($needBlankline) {
$needBlankline = false;
echo PHP_EOL;
}
echo 'label' . $i, ":", PHP_EOL;
}
if (isset($op['php'])) {
$toticks = isset($op['ticks']) ? (int) str($op['ticks']) : 0;
if ($curticks != $toticks) {
$oldticks = $curticks;
$curticks = $toticks;
if (!$curticks) {
echo $EX['indent'], "}", PHP_EOL, PHP_EOL;
$indent = $EX['indent'];
}
else {
if ($oldticks) {
echo $EX['indent'], "}", PHP_EOL, PHP_EOL;
}
else if (!$oldticks) {
$indent .= INDENT;
}
if ($needBlankline) {
$needBlankline = false;
echo PHP_EOL;
}
echo $EX['indent'], "declare (ticks=$curticks) {", PHP_EOL;
}
}
if ($needBlankline) {
$needBlankline = false;
echo PHP_EOL;
}
echo $indent, str($op['php'], $indent), ";", PHP_EOL;
$EX['lastBlock'] = 'basic';
}
}
if ($curticks) {
echo $EX['indent'], "}", PHP_EOL;
}
}
// }}}
function getOpVal($op, &$EX, $free = false) // {{{
{
switch ($op['op_type']) {
case XC_IS_CONST:
return value($op['constant'], $EX);
case XC_IS_VAR:
case XC_IS_TMP_VAR:
$T = &$EX['Ts'];
if (!isset($T[$op['var']])) {
if ($this->outputPhp && isset($free)) {
printBacktrace();
}
return null;
}
$ret = $T[$op['var']];
if ($free && empty($this->keepTs)) {
unset($T[$op['var']]);
}
return $ret;
case XC_IS_CV:
$var = $op['var'];
$var = $EX['op_array']['vars'][$var];
return '$' . $var['name'];
case XC_IS_UNUSED:
return null;
}
}
// }}}
function removeKeyPrefix($array, $prefix) // {{{
{
$prefixLen = strlen($prefix);
$ret = array();
foreach ($array as $key => $value) {
if (substr($key, 0, $prefixLen) == $prefix) {
$key = substr($key, $prefixLen);
}
$ret[$key] = $value;
}
return $ret;
}
// }}}
function fixOpCode($opcodes, $removeTailing = false, $defaultReturnValue = null) // {{{
{
$last = count($opcodes) - 1;
for ($i = 0; $i <= $last; $i++) {
if (function_exists('xcache_get_fixed_opcode')) {
$opcodes[$i]['opcode'] = xcache_get_fixed_opcode($opcodes[$i]['opcode'], $i);
}
if (isset($opcodes[$i]['op1'])) {
$opcodes[$i]['op1'] = $this->removeKeyPrefix($opcodes[$i]['op1'], 'u.');
$opcodes[$i]['op2'] = $this->removeKeyPrefix($opcodes[$i]['op2'], 'u.');
$opcodes[$i]['result'] = $this->removeKeyPrefix($opcodes[$i]['result'], 'u.');
}
else {
$op = array(
'op1' => array(),
'op2' => array(),
'result' => array(),
);
foreach ($opcodes[$i] as $name => $value) {
if (preg_match('!^(op1|op2|result)\\.(.*)!', $name, $m)) {
list(, $which, $field) = $m;
$op[$which][$field] = $value;
}
else if (preg_match('!^(op1|op2|result)_type$!', $name, $m)) {
list(, $which) = $m;
$op[$which]['op_type'] = $value;
}
else {
$op[$name] = $value;
}
}
$opcodes[$i] = $op;
}
}
if ($removeTailing) {
$last = count($opcodes) - 1;
if ($opcodes[$last]['opcode'] == XC_HANDLE_EXCEPTION) {
$this->usedOps[XC_HANDLE_EXCEPTION] = true;
$opcodes[$last]['opcode'] = XC_NOP;
--$last;
}
if ($opcodes[$last]['opcode'] == XC_RETURN
|| $opcodes[$last]['opcode'] == XC_GENERATOR_RETURN) {
$op1 = $opcodes[$last]['op1'];
if ($op1['op_type'] == XC_IS_CONST && array_key_exists('constant', $op1) && $op1['constant'] === $defaultReturnValue) {
$opcodes[$last]['opcode'] = XC_NOP;
--$last;
}
}
}
return $opcodes;
}
// }}}
function decompileBasicBlock($range, $unhandled = false) // {{{
{
$this->dasmBasicBlock($range);
if ($unhandled) {
$this->dumpRange($range);
}
$this->outputPhp($range);
}
// }}}
function isIfCondition($range) // {{{
{
$opcodes = &$range['EX']['opcodes'];
$firstOp = &$opcodes[$range[0]];
return $firstOp['opcode'] == XC_JMPZ && !empty($firstOp['jmptos']) && $opcodes[$firstOp['jmptos'][0] - 1]['opcode'] == XC_JMP
&& !empty($opcodes[$firstOp['jmptos'][0] - 1]['jmptos'])
&& $opcodes[$firstOp['jmptos'][0] - 1]['jmptos'][0] == $range[1] + 1;
}
// }}}
function removeJmpInfo(&$EX, $line) // {{{
{
$opcodes = &$EX['opcodes'];
if (!isset($opcodes[$line]['jmptos'])) {
printBacktrace();
}
foreach ($opcodes[$line]['jmptos'] as $jmpTo) {
$jmpfroms = &$opcodes[$jmpTo]['jmpfroms'];
$jmpfroms = array_flip($jmpfroms);
unset($jmpfroms[$line]);
$jmpfroms = array_keys($jmpfroms);
}
// $opcodes[$line]['opcode'] = XC_NOP;
unset($opcodes[$line]['jmptos']);
}
// }}}
function beginScope(&$EX, $doIndent = true) // {{{
{
array_push($EX['scopeStack'], array($EX['lastBlock'], $EX['indent']));
if ($doIndent) {
$EX['indent'] .= INDENT;
}
$EX['lastBlock'] = null;
}
// }}}
function endScope(&$EX) // {{{
{
list($EX['lastBlock'], $EX['indent']) = array_pop($EX['scopeStack']);
}
// }}}
function beginComplexBlock(&$EX) // {{{
{
if (isset($EX['lastBlock'])) {
echo PHP_EOL;
$EX['lastBlock'] = null;
}
}
// }}}
function endComplexBlock(&$EX) // {{{
{
$EX['lastBlock'] = 'complex';
}
// }}}
function op($range, $offset) // {{{
{
$opcodes = &$range['EX']['opcodes'];
if ($offset > 0) {
$last = $range['EX']['op_array']['last'];
for ($i = $offset; $i <= $range[1]; ++$i) {
if ($opcodes[$i]['opcode'] != XC_NOP) {
return $i;
}
}
}
else {
for ($i = -$offset; $i >= $range[0]; --$i) {
if ($opcodes[$i]['opcode'] != XC_NOP) {
return $i;
}
}
}
return -1;
}
// }}}
function decompileComplexBlock($range) // {{{
{
$EX = &$range['EX'];
$T = &$EX['Ts'];
$opcodes = &$EX['opcodes'];
$indent = $EX['indent'];
$firstOp = &$opcodes[$this->op($range, $range[0])];
$lastOp = &$opcodes[$this->op($range, -$range[1])];
// {{{ && || and or
if (($firstOp['opcode'] == XC_JMPZ_EX || $firstOp['opcode'] == XC_JMPNZ_EX) && !empty($firstOp['jmptos'])
&& $firstOp['jmptos'][0] == $range[1] + 1
&& $lastOp['opcode'] == XC_BOOL
&& $firstOp['opcode']['result']['var'] == $lastOp['opcode']['result']['var']
) {
$this->removeJmpInfo($EX, $range[0]);
$this->recognizeAndDecompileClosedBlocks(array($range[0], $range[0], 'EX' => &$EX));
$op1 = $this->getOpVal($firstOp['result'], $EX, true);
$this->recognizeAndDecompileClosedBlocks(array($range[0] + 1, $range[1], 'EX' => &$EX));
$op2 = $this->getOpVal($lastOp['result'], $EX, true);
$T[$firstOp['result']['var']] = new Decompiler_Binop($this, $op1, $firstOp['opcode'], $op2);
return false;
}
// }}}
// {{{ ?: excluding JMP_SET/JMP_SET_VAR
if ($firstOp['opcode'] == XC_JMPZ && !empty($firstOp['jmptos'])
&& $range[1] >= $range[0] + 3
&& ($opcodes[$firstOp['jmptos'][0] - 2]['opcode'] == XC_QM_ASSIGN || $opcodes[$firstOp['jmptos'][0] - 2]['opcode'] == XC_QM_ASSIGN_VAR)
&& $opcodes[$firstOp['jmptos'][0] - 1]['opcode'] == XC_JMP && $opcodes[$firstOp['jmptos'][0] - 1]['jmptos'][0] == $range[1] + 1
&& ($lastOp['opcode'] == XC_QM_ASSIGN || $lastOp['opcode'] == XC_QM_ASSIGN_VAR)
) {
$trueRange = array($range[0] + 1, $firstOp['jmptos'][0] - 2, 'EX' => &$EX);
$falseRange = array($firstOp['jmptos'][0], $range[1], 'EX' => &$EX);
$this->removeJmpInfo($EX, $range[0]);
$condition = $this->getOpVal($firstOp['op1'], $EX);
$this->recognizeAndDecompileClosedBlocks($trueRange);
$trueValue = $this->getOpVal($opcodes[$trueRange[1]]['result'], $EX, true);
$this->recognizeAndDecompileClosedBlocks($falseRange);
$falseValue = $this->getOpVal($opcodes[$falseRange[1]]['result'], $EX, true);
$T[$opcodes[$trueRange[1]]['result']['var']] = new Decompiler_TriOp($condition, $trueValue, $falseValue);
return false;
}
// }}}
// {{{ goto (TODO: recognize BRK which is translated to JMP by optimizer)
if ($firstOp['opcode'] == XC_JMP && !empty($firstOp['jmptos']) && $firstOp['jmptos'][0] == $range[1] + 1) {
$this->removeJmpInfo($EX, $range[0]);
assert(XC_GOTO != -1);
$firstOp['opcode'] = XC_GOTO;
$target = $firstOp['op1']['var'];
$firstOp['goto'] = $target;
$opcodes[$target]['gofrom'][] = $range[0];
$this->recognizeAndDecompileClosedBlocks($range);
return false;
}
// }}}
// {{{ for
if (!empty($firstOp['jmpfroms']) && $opcodes[$firstOp['jmpfroms'][0]]['opcode'] == XC_JMP
&& $lastOp['opcode'] == XC_JMP && !empty($lastOp['jmptos']) && $lastOp['jmptos'][0] <= $firstOp['jmpfroms'][0]
&& !empty($opcodes[$range[1] + 1]['jmpfroms']) && $opcodes[$opcodes[$range[1] + 1]['jmpfroms'][0]]['opcode'] == XC_JMPZNZ
) {
$nextRange = array($lastOp['jmptos'][0], $firstOp['jmpfroms'][0], 'EX' => &$EX);
$conditionRange = array($range[0], $nextRange[0] - 1, 'EX' => &$EX);
$this->removeJmpInfo($EX, $conditionRange[1]);
$bodyRange = array($nextRange[1], $range[1], 'EX' => &$EX);
$this->removeJmpInfo($EX, $bodyRange[1]);
$initial = '';
$this->beginScope($EX);
$this->dasmBasicBlock($conditionRange);
$conditionCodes = array();
for ($i = $conditionRange[0]; $i <= $conditionRange[1]; ++$i) {
if (isset($opcodes[$i]['php'])) {
$conditionCodes[] = str($opcodes[$i]['php'], $EX);
}
}
$conditionCodes[] = str($this->getOpVal($opcodes[$conditionRange[1]]['op1'], $EX), $EX);
if (implode(',', $conditionCodes) == 'true') {
$conditionCodes = array();
}
$this->endScope($EX);
$this->beginScope($EX);
$this->dasmBasicBlock($nextRange);
$nextCodes = array();
for ($i = $nextRange[0]; $i <= $nextRange[1]; ++$i) {
if (isset($opcodes[$i]['php'])) {
$nextCodes[] = str($opcodes[$i]['php'], $EX);
}
}
$this->endScope($EX);
$this->beginComplexBlock($EX);
echo $indent, 'for (', str($initial, $EX), '; ', implode(', ', $conditionCodes), '; ', implode(', ', $nextCodes), ') ', '{', PHP_EOL;
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks($bodyRange);
$this->endScope($EX);
echo $indent, '}', PHP_EOL;
$this->endComplexBlock($EX);
return;
}
// }}}
// {{{ if/elseif/else
if ($this->isIfCondition($range)) {
$this->beginComplexBlock($EX);
$isElseIf = false;
do {
$ifRange = array($range[0], $opcodes[$range[0]]['jmptos'][0] - 1, 'EX' => &$EX);
$this->removeJmpInfo($EX, $ifRange[0]);
$this->removeJmpInfo($EX, $ifRange[1]);
$condition = $this->getOpVal($opcodes[$ifRange[0]]['op1'], $EX);
echo $indent, $isElseIf ? 'else if' : 'if', ' (', str($condition, $EX), ') ', '{', PHP_EOL;
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks($ifRange);
$this->endScope($EX);
$EX['lastBlock'] = null;
echo $indent, '}', PHP_EOL;
$isElseIf = true;
// search for else if
$range[0] = $ifRange[1] + 1;
for ($i = $ifRange[1] + 1; $i <= $range[1]; ++$i) {
// find first jmpout
if (!empty($opcodes[$i]['jmptos'])) {
if ($this->isIfCondition(array($i, $range[1], 'EX' => &$EX))) {
$this->dasmBasicBlock(array($range[0], $i, 'EX' => &$EX));
$range[0] = $i;
}
break;
}
}
} while ($this->isIfCondition($range));
if ($ifRange[1] < $range[1]) {
$elseRange = array($ifRange[1], $range[1], 'EX' => &$EX);
echo $indent, 'else ', '{', PHP_EOL;
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks($elseRange);
$this->endScope($EX);
$EX['lastBlock'] = null;
echo $indent, '}', PHP_EOL;
}
$this->endComplexBlock($EX);
return;
}
if ($firstOp['opcode'] == XC_JMPZ && !empty($firstOp['jmptos'])
&& $firstOp['jmptos'][0] - 1 == $range[1]
&& ($opcodes[$firstOp['jmptos'][0] - 1]['opcode'] == XC_RETURN || $opcodes[$firstOp['jmptos'][0] - 1]['opcode'] == XC_GENERATOR_RETURN)) {
$this->beginComplexBlock($EX);
$this->removeJmpInfo($EX, $range[0]);
$condition = $this->getOpVal($opcodes[$range[0]]['op1'], $EX);
echo $indent, 'if (', str($condition, $EX), ') ', '{', PHP_EOL;
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks($range);
$this->endScope($EX);
echo $indent, '}', PHP_EOL;
$this->endComplexBlock($EX);
return;
}
// }}}
// {{{ try/catch
if (!empty($firstOp['jmpfroms']) && !empty($opcodes[$firstOp['jmpfroms'][0]]['isCatchBegin'])) {
$catchBlocks = array();
$catchFirst = $firstOp['jmpfroms'][0];
$tryRange = array($range[0], $catchFirst - 1, 'EX' => &$EX);
// search for XC_CATCH
for ($i = $catchFirst; $i <= $range[1]; ) {
if ($opcodes[$i]['opcode'] == XC_CATCH) {
$catchOpLine = $i;
$this->removeJmpInfo($EX, $catchFirst);
$catchNext = $opcodes[$catchOpLine]['extended_value'];
$catchBodyLast = $catchNext - 1;
if ($opcodes[$catchBodyLast]['opcode'] == XC_JMP) {
--$catchBodyLast;
}
$catchBlocks[$catchFirst] = array($catchOpLine, $catchBodyLast);
$i = $catchFirst = $catchNext;
}
else {
++$i;
}
}
if ($opcodes[$tryRange[1]]['opcode'] == XC_JMP) {
--$tryRange[1];
}
$this->beginComplexBlock($EX);
echo $indent, "try {", PHP_EOL;
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks($tryRange);
$this->endScope($EX);
echo $indent, '}', PHP_EOL;
if (!$catchBlocks) {
printBacktrace();
assert($catchBlocks);
}
foreach ($catchBlocks as $catchFirst => $catchInfo) {
list($catchOpLine, $catchBodyLast) = $catchInfo;
$catchBodyFirst = $catchOpLine + 1;
$this->dasmBasicBlock(array($catchFirst, $catchOpLine, 'EX' => &$EX));
$catchOp = &$opcodes[$catchOpLine];
echo $indent, "catch ("
, $this->stripNamespace(isset($catchOp['op1']['constant']) ? $catchOp['op1']['constant'] : str($this->getOpVal($catchOp['op1'], $EX)))
, ' '
, isset($catchOp['op2']['constant']) ? '$' . $catchOp['op2']['constant'] : str($this->getOpVal($catchOp['op2'], $EX))
, ") {", PHP_EOL;
unset($catchOp);
$EX['lastBlock'] = null;
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks(array($catchBodyFirst, $catchBodyLast, 'EX' => &$EX));
$this->endScope($EX);
echo $indent, '}', PHP_EOL;
}
$this->endComplexBlock($EX);
return;
}
// }}}
// {{{ switch/case
if ($firstOp['opcode'] == XC_CASE && !empty($lastOp['jmptos'])
|| $firstOp['opcode'] == XC_JMP && !empty($firstOp['jmptos']) && $opcodes[$firstOp['jmptos'][0]]['opcode'] == XC_CASE && !empty($lastOp['jmptos'])
) {
$cases = array();
$caseDefault = null;
$caseOp = null;
for ($i = $range[0]; $i <= $range[1]; ) {
$op = $opcodes[$i];
if ($op['opcode'] == XC_CASE) {
if (!isset($caseOp)) {
$caseOp = $op;
}
$jmpz = $opcodes[$i + 1];
assert('$jmpz["opcode"] == XC_JMPZ');
$caseNext = $jmpz['jmptos'][0];
$cases[$i] = $caseNext - 1;
$i = $caseNext;
}
else if ($op['opcode'] == XC_JMP && $op['jmptos'][0] >= $i) {
// default
$caseNext = $op['jmptos'][0];
$caseDefault = $i;
$cases[$i] = $caseNext - 1;
$i = $caseNext;
}
else {
++$i;
}
}
$this->beginComplexBlock($EX);
echo $indent, 'switch (', str($this->getOpVal($caseOp['op1'], $EX, true), $EX), ") {", PHP_EOL;
$caseIsOut = false;
foreach ($cases as $caseFirst => $caseLast) {
if ($caseIsOut && empty($lastCaseFall)) {
echo PHP_EOL;
}
$caseOp = $opcodes[$caseFirst];
echo $indent;
if ($caseOp['opcode'] == XC_CASE) {
echo 'case ';
echo str($this->getOpVal($caseOp['op2'], $EX), $EX);
echo ':', PHP_EOL;
$this->removeJmpInfo($EX, $caseFirst);
++$caseFirst;
assert('$opcodes[$caseFirst]["opcode"] == XC_JMPZ');
$this->removeJmpInfo($EX, $caseFirst);
++$caseFirst;
}
else {
echo 'default';
echo ':', PHP_EOL;
assert('$opcodes[$caseFirst]["opcode"] == XC_JMP');
$this->removeJmpInfo($EX, $caseFirst);
++$caseFirst;
}
assert('$opcodes[$caseLast]["opcode"] == XC_JMP');
$this->removeJmpInfo($EX, $caseLast);
--$caseLast;
switch ($opcodes[$caseLast]['opcode']) {
case XC_BRK:
case XC_CONT:
case XC_GOTO:
$lastCaseFall = false;
break;
default:
$lastCaseFall = true;
}
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks(array($caseFirst, $caseLast, 'EX' => &$EX));
$this->endScope($EX);
$caseIsOut = true;
}
echo $indent, '}', PHP_EOL;
$this->endComplexBlock($EX);
return;
}
// }}}
// {{{ do/while
if ($lastOp['opcode'] == XC_JMPNZ && !empty($lastOp['jmptos'])
&& $lastOp['jmptos'][0] == $range[0]) {
$this->removeJmpInfo($EX, $range[1]);
$this->beginComplexBlock($EX);
echo $indent, "do {", PHP_EOL;
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks($range);
$this->endScope($EX);
echo $indent, "} while (", str($this->getOpVal($lastOp['op1'], $EX)), ');', PHP_EOL;
$this->endComplexBlock($EX);
return;
}
// }}}
// {{{ search firstJmpOp
$firstJmp = -1;
$firstJmpOp = null;
for ($i = $range[0]; $i <= $range[1]; ++$i) {
if (!empty($opcodes[$i]['jmptos'])) {
$firstJmp = $i;
$firstJmpOp = &$opcodes[$firstJmp];
break;
}
}
// }}}
// {{{ search lastJmpOp
$lastJmp = -1;
$lastJmpOp = null;
for ($i = $range[1]; $i > $firstJmp; --$i) {
if (!empty($opcodes[$i]['jmptos'])) {
$lastJmp = $i;
$lastJmpOp = &$opcodes[$lastJmp];
break;
}
}
// }}}
// {{{ while
if (isset($firstJmpOp)
&& $firstJmpOp['opcode'] == XC_JMPZ
&& $firstJmpOp['jmptos'][0] > $range[1]
&& $lastOp['opcode'] == XC_JMP
&& !empty($lastOp['jmptos']) && $lastOp['jmptos'][0] == $range[0]) {
$this->removeJmpInfo($EX, $firstJmp);
$this->removeJmpInfo($EX, $range[1]);
$this->beginComplexBlock($EX);
ob_start();
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks($range);
$this->endScope($EX);
$body = ob_get_clean();
echo $indent, "while (", str($this->getOpVal($firstJmpOp['op1'], $EX)), ") {", PHP_EOL;
echo $body;
echo $indent, '}', PHP_EOL;
$this->endComplexBlock($EX);
return;
}
// }}}
// {{{ foreach
if (isset($firstJmpOp)
&& $firstJmpOp['opcode'] == XC_FE_FETCH
&& !empty($firstJmpOp['jmptos']) && $firstJmpOp['jmptos'][0] > $lastJmp
&& isset($lastJmpOp)
&& $lastJmpOp['opcode'] == XC_JMP
&& !empty($lastJmpOp['jmptos']) && $lastJmpOp['jmptos'][0] == $firstJmp) {
$this->removeJmpInfo($EX, $firstJmp);
$this->removeJmpInfo($EX, $lastJmp);
$this->beginComplexBlock($EX);
ob_start();
$this->beginScope($EX);
$this->recognizeAndDecompileClosedBlocks($range);
$this->endScope($EX);
$body = ob_get_clean();
$as = str(foldToCode($firstJmpOp['fe_as'], $EX), $EX);
if (isset($firstJmpOp['fe_key'])) {
$as = str($firstJmpOp['fe_key'], $EX) . ' => ' . $as;
}
echo $indent, "foreach (", str($firstJmpOp['fe_src'], $EX), " as $as) {", PHP_EOL;
echo $body;
echo $indent, '}', PHP_EOL;
$this->endComplexBlock($EX);
return;
}
// }}}
$this->decompileBasicBlock($range, true);
}
// }}}
function recognizeAndDecompileClosedBlocks($range) // {{{ decompile in a tree way
{
$EX = &$range['EX'];
$opcodes = &$EX['opcodes'];
$starti = $range[0];
for ($i = $starti; $i <= $range[1]; ) {
if (!empty($opcodes[$i]['jmpfroms']) || !empty($opcodes[$i]['jmptos'])) {
$blockFirst = $i;
$blockLast = -1;
$j = $blockFirst;
do {
$op = $opcodes[$j];
if (!empty($op['jmpfroms'])) {
// care about jumping from blocks behind, not before
foreach ($op['jmpfroms'] as $oplineNumber) {
if ($oplineNumber <= $range[1] && $blockLast < $oplineNumber) {
$blockLast = $oplineNumber;
}
}
}
if (!empty($op['jmptos'])) {
$blockLast = max($blockLast, max($op['jmptos']) - 1);
}
++$j;
} while ($j <= $blockLast);
if (!assert('$blockLast <= $range[1]')) {
var_dump($blockLast, $range[1]);
printBacktrace();
}
if ($blockLast >= $blockFirst) {
if ($blockFirst > $starti) {
$this->decompileBasicBlock(array($starti, $blockFirst - 1, 'EX' => &$EX));
}
if ($this->decompileComplexBlock(array($blockFirst, $blockLast, 'EX' => &$EX)) === false) {
if ($EX['lastBlock'] == 'complex') {
echo PHP_EOL;
}
$EX['lastBlock'] = null;
}
$starti = $blockLast + 1;
$i = $starti;
}
else {
++$i;
}
}
else {
++$i;
}
}
if ($starti <= $range[1]) {
$this->decompileBasicBlock(array($starti, $range[1], 'EX' => &$EX));
}
}
// }}}
function buildJmpInfo(&$op_array) // {{{ build jmpfroms/jmptos to op_array
{
$opcodes = &$op_array['opcodes'];
$last = count($opcodes) - 1;
for ($i = 0; $i <= $last; $i++) {
$op = &$opcodes[$i];
$op['line'] = $i;
switch ($op['opcode']) {
case XC_CONT:
case XC_BRK:
$op['jmptos'] = array();
break;
case XC_GOTO:
$target = $op['op1']['var'];
if (!isset($opcodes[$target])) {
fprintf(STDERR, "%d: missing jump target at #$i" . PHP_EOL, __LINE__);
break;
}
$op['goto'] = $target;
$opcodes[$target]['gofrom'][] = $i;
break;
case XC_JMP:
$target = $op['op1']['var'];
if (!isset($opcodes[$target])) {
fprintf(STDERR, "%d: missing jump target at #$i" . PHP_EOL, __LINE__);
break;
}
$op['jmptos'] = array($target);
$opcodes[$target]['jmpfroms'][] = $i;
break;
case XC_JMPZNZ:
$jmpz = $op['op2']['opline_num'];
$jmpnz = $op['extended_value'];
if (!isset($opcodes[$jmpz])) {
fprintf(STDERR, "%d: missing jump target at #$i" . PHP_EOL, __LINE__);
break;
}
if (!isset($opcodes[$jmpnz])) {
fprintf(STDERR, "%d: missing jump target at #$i" . PHP_EOL, __LINE__);
break;
}
$op['jmptos'] = array($jmpz, $jmpnz);
$opcodes[$jmpz]['jmpfroms'][] = $i;
$opcodes[$jmpnz]['jmpfroms'][] = $i;
break;
case XC_JMPZ:
case XC_JMPNZ:
case XC_JMPZ_EX:
case XC_JMPNZ_EX:
// case XC_JMP_SET:
// case XC_JMP_SET_VAR:
// case XC_FE_RESET:
case XC_FE_FETCH:
// case XC_JMP_NO_CTOR:
$target = $op['op2']['opline_num'];
if (!isset($opcodes[$target])) {
fprintf(STDERR, "%d: missing jump target at #$i" . PHP_EOL, __LINE__);
break;
}
$op['jmptos'] = array($target);
$opcodes[$target]['jmpfroms'][] = $i;
break;
/*
case XC_RETURN:
$op['jmptos'] = array();
break;
*/
case XC_CASE:
// just to link together
$op['jmptos'] = array($i + 2);
$opcodes[$i + 2]['jmpfroms'][] = $i;
break;
case XC_CATCH:
$catchNext = $op['extended_value'];
$catchBegin = $opcodes[$i - 1]['opcode'] == XC_FETCH_CLASS ? $i - 1 : $i;
$opcodes[$catchBegin]['jmptos'] = array($catchNext);
$opcodes[$catchNext]['jmpfroms'][] = $catchBegin;
break;
}
/*
if (!empty($op['jmptos']) || !empty($op['jmpfroms'])) {
echo $i, "\t", xcache_get_opcode($op['opcode']), PHP_EOL;
}
// */
}
unset($op);
if (isset($op_array['try_catch_array'])) {
foreach ($op_array['try_catch_array'] as $try_catch_element) {
$catch_op = $try_catch_element['catch_op'];
$opcodes[$catch_op]['isCatchBegin'] = true;
}
foreach ($op_array['try_catch_array'] as $try_catch_element) {
$catch_op = $try_catch_element['catch_op'];
$try_op = $try_catch_element['try_op'];
do {
$opcodes[$try_op]['jmpfroms'][] = $catch_op;
$opcodes[$catch_op]['jmptos'][] = $try_op;
if ($opcodes[$catch_op]['opcode'] == XC_CATCH) {
$catch_op = $opcodes[$catch_op]['extended_value'];
}
else if ($catch_op + 1 <= $last && $opcodes[$catch_op + 1]['opcode'] == XC_CATCH) {
$catch_op = $opcodes[$catch_op + 1]['extended_value'];
}
else {
break;
}
} while ($catch_op <= $last && empty($opcodes[$catch_op]['isCatchBegin']));
}
}
}
// }}}
function &dop_array($op_array, $indent = '') // {{{
{
$op_array['opcodes'] = $this->fixOpCode($op_array['opcodes'], true, $indent == '' ? 1 : null);
$this->buildJmpInfo($op_array);
$opcodes = &$op_array['opcodes'];
$EX = array();
$EX['Ts'] = array();
$EX['indent'] = $indent;
$EX['op_array'] = &$op_array;
$EX['opcodes'] = &$opcodes;
// func call
$EX['object'] = null;
$EX['called_scope'] = null;
$EX['fbc'] = null;
$EX['argstack'] = array();
$EX['arg_types_stack'] = array();
$EX['scopeStack'] = array();
$EX['silence'] = 0;
$EX['recvs'] = array();
$EX['uses'] = array();
$EX['lastBlock'] = null;
$EX['value2constant'] = array();
if (isset($this->activeFile)) {
$EX['value2constant'][$this->activeFile] = '__FILE__';
}
if (isset($this->activeDir)) {
$EX['value2constant'][$this->activeDir] = '__DIR__';
}
if (isset($this->activeClass)) {
$EX['value2constant'][$this->activeClass] = '__CLASS__';
}
if (isset($this->activeMethod)) {
$EX['value2constant'][$this->activeMethod] = '__METHOD__';
}
if (isset($this->activeFunction)) {
$EX['value2constant'][$this->activeFunction] = '__FUNCTION__';
}
$range = array(0, count($opcodes) - 1, 'EX' => &$EX);
if ($this->outputOpcode) {
$this->keepTs = true;
$this->dumpRange($range);
$this->keepTs = false;
}
if ($this->outputPhp) {
// decompile in a tree way
$this->recognizeAndDecompileClosedBlocks($range);
}
return $EX;
}
// }}}
function dasmBasicBlock($range) // {{{
{
$EX = &$range['EX'];
$T = &$EX['Ts'];
$opcodes = &$EX['opcodes'];
$lastphpop = null;
$currentSourceLine = null;
for ($i = $range[0]; $i <= $range[1]; $i++, unsetArray($EX['value2constant'], $currentSourceLine)) {
// {{{ prepair
$op = &$opcodes[$i];
$opc = $op['opcode'];
if ($opc == XC_NOP) {
$this->usedOps[$opc] = true;
continue;
}
$op1 = $op['op1'];
$op2 = $op['op2'];
$res = $op['result'];
$ext = $op['extended_value'];
$currentSourceLine = $op['lineno'];
$EX['value2constant'][$currentSourceLine] = '__LINE__';
$opname = xcache_get_opcode($opc);
if ($opname == 'UNDEF' || !isset($opname)) {
echo '// UNDEF OP:';
$this->dumpOp($op, $EX);
continue;
}
// echo $i, ' '; $this->dumpOp($op, $EX); //var_dump($op);
$resvar = null;
unset($curResVar);
if (array_key_exists($res['var'], $T)) {
$curResVar = &$T[$res['var']];
}
if ((ZEND_ENGINE_2_4 ? ($res['op_type'] & EXT_TYPE_UNUSED) : ($res['EA.type'] & EXT_TYPE_UNUSED)) || $res['op_type'] == XC_IS_UNUSED) {
$istmpres = false;
}
else {
$istmpres = true;
}
// }}}
// echo $opname, PHP_EOL;
$notHandled = false;
switch ($opc) {
case XC_NEW: // {{{
array_push($EX['arg_types_stack'], array($EX['fbc'], $EX['object'], $EX['called_scope']));
$EX['object'] = $istmpres ? (int) $res['var'] : null;
$EX['called_scope'] = null;
$EX['fbc'] = 'new ' . $this->stripNamespace(isset($op1['constant']) ? $op1['constant'] : $this->getOpVal($op1, $EX));
break;
// }}}
case XC_THROW: // {{{
$resvar = 'throw ' . str($this->getOpVal($op1, $EX));
break;
// }}}
case XC_CLONE: // {{{
$resvar = 'clone ' . str($this->getOpVal($op1, $EX));
break;
// }}}
case XC_CATCH: // {{{
break;
// }}}
case XC_INSTANCEOF: // {{{
$resvar = str($this->getOpVal($op1, $EX)) . ' instanceof ' . $this->stripNamespace($this->getOpVal($op2, $EX));
break;
// }}}
case XC_FETCH_CLASS: // {{{
if ($op2['op_type'] == XC_IS_UNUSED) {
switch (($ext & (defined('ZEND_FETCH_CLASS_MASK') ? ZEND_FETCH_CLASS_MASK : 0xFF))) {
case ZEND_FETCH_CLASS_SELF:
$class = 'self';
break;
case ZEND_FETCH_CLASS_PARENT:
$class = 'parent';
break;
case ZEND_FETCH_CLASS_STATIC:
$class = 'static';
break;
}
$istmpres = true;
}
else {
$class = isset($op2['constant']) ? $op2['constant'] : $this->getOpVal($op2, $EX);
}
$resvar = $class;
break;
// }}}
case XC_FETCH_CONSTANT: // {{{
if ($op1['op_type'] == XC_IS_UNUSED) {
$resvar = $this->stripNamespace($op2['constant']);
break;
}
if ($op1['op_type'] == XC_IS_CONST) {
if (!ZEND_ENGINE_2) {
$resvar = $op1['constant'];
break;
}
$resvar = $this->stripNamespace($op1['constant']);
}
else {
$resvar = $this->getOpVal($op1, $EX);
}
$resvar = str($resvar) . '::' . unquoteName($this->getOpVal($op2, $EX));
break;
// }}}
// {{{ case FETCH_*
case XC_FETCH_R:
case XC_FETCH_W:
case XC_FETCH_RW:
case XC_FETCH_FUNC_ARG:
case XC_FETCH_UNSET:
case XC_FETCH_IS:
$fetchType = defined('ZEND_FETCH_TYPE_MASK') ? ($ext & ZEND_FETCH_TYPE_MASK) : $op2[!ZEND_ENGINE_2 ? 'fetch_type' : 'EA.type'];
$name = isset($op1['constant']) ? $op1['constant'] : unquoteName($this->getOpVal($op1, $EX), $EX);
if ($fetchType == ZEND_FETCH_STATIC_MEMBER) {
$class = isset($op2['constant']) ? $op2['constant'] : $this->getOpVal($op2, $EX);
$rvalue = $this->stripNamespace($class) . '::$' . $name;
}
else {
$rvalue = isset($op1['constant']) ? $op1['constant'] : $this->getOpVal($op1, $EX);
$globalName = xcache_is_autoglobal($name) ? "\$$name" : "\$GLOBALS[" . str($this->getOpVal($op1, $EX), $EX) . "]";
$rvalue = new Decompiler_Fetch($rvalue, $fetchType, $globalName);
}
if ($res['op_type'] != XC_IS_UNUSED) {
$resvar = $rvalue;
}
break;
// }}}
case XC_UNSET_VAR: // {{{
$fetchType = defined('ZEND_FETCH_TYPE_MASK') ? ($ext & ZEND_FETCH_TYPE_MASK) : $op2['EA.type'];
if ($fetchType == ZEND_FETCH_STATIC_MEMBER) {
$class = isset($op2['constant']) ? $op2['constant'] /* PHP5.3- */ : $this->getOpVal($op2, $EX);
$rvalue = $this->stripNamespace($class) . '::$' . $op1['constant'];
}
else {
$rvalue = isset($op1['constant']) ? '$' . $op1['constant'] /* PHP5.1- */ : $this->getOpVal($op1, $EX);
}
$op['php'] = "unset(" . str($rvalue, $EX) . ")";
$lastphpop = &$op;
break;
// }}}
// {{{ case FETCH_DIM_*
case XC_FETCH_DIM_TMP_VAR:
case XC_FETCH_DIM_R:
case XC_FETCH_DIM_W:
case XC_FETCH_DIM_RW:
case XC_FETCH_DIM_FUNC_ARG:
case XC_FETCH_DIM_UNSET:
case XC_FETCH_DIM_IS:
case XC_ASSIGN_DIM:
case XC_UNSET_DIM:
case XC_UNSET_DIM_OBJ:
case XC_UNSET_OBJ:
$src = $this->getOpVal($op1, $EX);
if (is_a($src, "Decompiler_ForeachBox")) {
assert($opc == XC_FETCH_DIM_TMP_VAR);
if (ZEND_ENGINE_2) {
$src = clone($src);
}
else {
$src = new Decompiler_ForeachBox($src->obj);
}
$src->iskey = $op2['constant'];
$resvar = $src;
break;
}
if (is_a($src, "Decompiler_DimBox")) {
$dimbox = $src;
}
else {
if (!is_a($src, "Decompiler_ListBox")) {
$op1val = $this->getOpVal($op1, $EX);
$list = new Decompiler_List(isset($op1val) ? $op1val : '$this');
$src = new Decompiler_ListBox($list);
if (!isset($op1['var'])) {
$this->dumpOp($op, $EX);
var_dump($op);
die('missing var');
}
$T[$op1['var']] = $src;
unset($list);
}
$dim = new Decompiler_Dim($src);
$src->obj->dims[] = &$dim;
$dimbox = new Decompiler_DimBox($dim);
}
$dim = &$dimbox->obj;
$dim->offsets[] = $this->getOpVal($op2, $EX);
/* TODO: use type mask */
if ($ext == ZEND_FETCH_ADD_LOCK) {
$src->obj->everLocked = true;
}
else if ($ext == ZEND_FETCH_STANDARD) {
$dim->isLast = true;
}
if ($opc == XC_UNSET_OBJ) {
$dim->isObject = true;
}
else if ($opc == XC_UNSET_DIM_OBJ) {
$dim->isObject = ZEND_ENGINE_2 ? $ext == ZEND_UNSET_OBJ : false /* cannot distingue */;
}
unset($dim);
$rvalue = $dimbox;
unset($dimbox);
if ($opc == XC_ASSIGN_DIM) {
$lvalue = $rvalue;
++ $i;
$rvalue = $this->getOpVal($opcodes[$i]['op1'], $EX);
$resvar = str($lvalue, $EX) . ' = ' . str($rvalue);
}
else if ($opc == XC_UNSET_DIM || $opc == XC_UNSET_OBJ || $opc == XC_UNSET_DIM_OBJ) {
$op['php'] = "unset(" . str($rvalue, $EX) . ")";
$lastphpop = &$op;
}
else if ($res['op_type'] != XC_IS_UNUSED) {
$resvar = $rvalue;
}
break;
// }}}
case XC_ASSIGN: // {{{
$lvalue = $this->getOpVal($op1, $EX);
$rvalue = $this->getOpVal($op2, $EX);
if (is_a($rvalue, 'Decompiler_ForeachBox')) {
$type = $rvalue->iskey ? 'fe_key' : 'fe_as';
$rvalue->obj[$type] = $lvalue;
unset($T[$op2['var']]);
break;
}
if (is_a($rvalue, "Decompiler_DimBox")) {
$dim = &$rvalue->obj;
$dim->assign = $lvalue;
if ($dim->isLast) {
$resvar = foldToCode($dim->value, $EX);
}
unset($dim);
break;
}
if (is_a($rvalue, 'Decompiler_Fetch')) {
$src = str($rvalue->src, $EX);
$name = unquoteName($src);
if ('$' . $name == $lvalue) {
switch ($rvalue->fetchType) {
case ZEND_FETCH_STATIC:
$statics = &$EX['op_array']['static_variables'];
if ((xcache_get_type($statics[$name]) & IS_LEXICAL_VAR)) {
$EX['uses'][] = str($lvalue);
unset($statics);
break 2;
}
unset($statics);
}
}
}
$resvar = new Decompiler_Binop($this, $lvalue, XC_ASSIGN, $rvalue);
break;
// }}}
case XC_ASSIGN_REF: // {{{
$lvalue = $this->getOpVal($op1, $EX);
$rvalue = $this->getOpVal($op2, $EX);
if (is_a($rvalue, 'Decompiler_Fetch')) {
$src = str($rvalue->src, $EX);
if ('$' . unquoteName($src) == $lvalue) {
switch ($rvalue->fetchType) {
case ZEND_FETCH_GLOBAL:
case ZEND_FETCH_GLOBAL_LOCK:
$resvar = 'global ' . $lvalue;
break 2;
case ZEND_FETCH_STATIC:
$statics = &$EX['op_array']['static_variables'];
$name = unquoteName($src);
if ((xcache_get_type($statics[$name]) & IS_LEXICAL_REF)) {
$EX['uses'][] = '&' . str($lvalue);
unset($statics);
break 2;
}
$resvar = 'static ' . $lvalue;
if (isset($statics[$name])) {
$var = $statics[$name];
$resvar .= ' = ';
$resvar .= str(value($var, $EX), $EX);
}
unset($statics);
break 2;
default:
}
}
}
// TODO: PHP_6 global
$resvar = new Decompiler_Binop($this, $lvalue, XC_ASSIGN_REF, $rvalue);
break;
// }}}
// {{{ case FETCH_OBJ_*
case XC_FETCH_OBJ_R:
case XC_FETCH_OBJ_W:
case XC_FETCH_OBJ_RW:
case XC_FETCH_OBJ_FUNC_ARG:
case XC_FETCH_OBJ_UNSET:
case XC_FETCH_OBJ_IS:
case XC_ASSIGN_OBJ:
$obj = $this->getOpVal($op1, $EX);
if (!isset($obj)) {
$obj = '$this';
}
$rvalue = str($obj) . "->" . unquoteVariableName($this->getOpVal($op2, $EX), $EX);
if ($res['op_type'] != XC_IS_UNUSED) {
$resvar = $rvalue;
}
if ($opc == XC_ASSIGN_OBJ) {
++ $i;
$lvalue = $rvalue;
$rvalue = $this->getOpVal($opcodes[$i]['op1'], $EX);
$resvar = "$lvalue = " . str($rvalue);
}
break;
// }}}
case XC_ISSET_ISEMPTY_DIM_OBJ:
case XC_ISSET_ISEMPTY_PROP_OBJ:
case XC_ISSET_ISEMPTY:
case XC_ISSET_ISEMPTY_VAR: // {{{
if ($opc == XC_ISSET_ISEMPTY_VAR) {
$rvalue = $this->getOpVal($op1, $EX);
// for < PHP_5_3
if ($op1['op_type'] == XC_IS_CONST) {
$rvalue = '$' . unquoteVariableName($this->getOpVal($op1, $EX));
}
$fetchtype = defined('ZEND_FETCH_TYPE_MASK') ? ($ext & ZEND_FETCH_TYPE_MASK) : $op2['EA.type'];
if ($fetchtype == ZEND_FETCH_STATIC_MEMBER) {
$class = isset($op2['constant']) ? $op2['constant'] : $this->getOpVal($op2, $EX);
$rvalue = $this->stripNamespace($class) . '::' . unquoteName($rvalue, $EX);
}
}
else if ($opc == XC_ISSET_ISEMPTY) {
$rvalue = $this->getOpVal($op1, $EX);
}
else {
$container = $this->getOpVal($op1, $EX);
$dim = $this->getOpVal($op2, $EX);
if ($opc == XC_ISSET_ISEMPTY_PROP_OBJ) {
if (!isset($container)) {
$container = '$this';
}
$rvalue = str($container, $EX) . "->" . unquoteVariableName($dim);
}
else {
$rvalue = str($container, $EX) . '[' . str($dim) .']';
}
}
switch (((!ZEND_ENGINE_2 ? $op['op2']['var'] /* constant */ : $ext) & ZEND_ISSET_ISEMPTY_MASK)) {
case ZEND_ISSET:
$rvalue = "isset(" . str($rvalue) . ")";
break;
case ZEND_ISEMPTY:
$rvalue = "empty(" . str($rvalue) . ")";
break;
}
$resvar = $rvalue;
break;
// }}}
case XC_SEND_VAR_NO_REF:
case XC_SEND_VAL:
case XC_SEND_REF:
case XC_SEND_VAR: // {{{
$ref = ($opc == XC_SEND_REF ? '&' : '');
$EX['argstack'][] = $ref . str($this->getOpVal($op1, $EX));
break;
// }}}
case XC_INIT_STATIC_METHOD_CALL:
case XC_INIT_METHOD_CALL: // {{{
array_push($EX['arg_types_stack'], array($EX['fbc'], $EX['object'], $EX['called_scope']));
if ($opc == XC_INIT_STATIC_METHOD_CALL) {
$EX['object'] = null;
$EX['called_scope'] = $this->stripNamespace(isset($op1['constant']) ? $op1['constant'] : $this->getOpVal($op1, $EX));
}
else {
$obj = $this->getOpVal($op1, $EX);
if (!isset($obj)) {
$obj = '$this';
}
$EX['object'] = $obj;
$EX['called_scope'] = null;
}
if ($res['op_type'] != XC_IS_UNUSED) {
$resvar = '$obj call$';
}
$EX['fbc'] = isset($op2['constant']) ? $op2['constant'] : $this->getOpVal($op2, $EX);
if (!isset($EX['fbc'])) {
$EX['fbc'] = '__construct';
}
break;
// }}}
case XC_INIT_NS_FCALL_BY_NAME:
case XC_INIT_FCALL_BY_NAME: // {{{
if (!ZEND_ENGINE_2 && ($ext & ZEND_CTOR_CALL)) {
break;
}
array_push($EX['arg_types_stack'], array($EX['fbc'], $EX['object'], $EX['called_scope']));
if (!ZEND_ENGINE_2 && ($ext & ZEND_MEMBER_FUNC_CALL)) {
if (isset($op1['constant'])) {
$EX['object'] = null;
$EX['called_scope'] = $this->stripNamespace($op1['constant']);
}
else {
$EX['object'] = $this->getOpVal($op1, $EX);
$EX['called_scope'] = null;
}
}
else {
$EX['object'] = null;
$EX['called_scope'] = null;
}
$EX['fbc'] = isset($op2['constant']) ? $op2['constant'] : $this->getOpVal($op2, $EX);
break;
// }}}
case XC_INIT_FCALL_BY_FUNC: // {{{ deprecated even in PHP 4?
$EX['object'] = null;
$EX['called_scope'] = null;
$which = $op1['var'];
$EX['fbc'] = $EX['op_array']['funcs'][$which]['name'];
break;
// }}}
case XC_DO_FCALL_BY_FUNC:
$which = $op1['var'];
$fname = $EX['op_array']['funcs'][$which]['name'];
$args = $this->popargs($EX, $ext);
$resvar = $fname . "($args)";
break;
case XC_DO_FCALL:
$fname = unquoteName($this->getOpVal($op1, $EX), $EX);
$args = $this->popargs($EX, $ext);
$resvar = $fname . "($args)";
break;
case XC_DO_FCALL_BY_NAME: // {{{
$object = null;
if (!is_int($EX['object'])) {
$object = $EX['object'];
}
$args = $this->popargs($EX, $ext);
$prefix = (isset($object) ? str($object) . '->' : '' )
. (isset($EX['called_scope']) ? str($EX['called_scope']) . '::' : '');
$resvar = $prefix
. (!$prefix ? $this->stripNamespace($EX['fbc']) : str($EX['fbc']))
. "($args)";
unset($args);
if (is_int($EX['object'])) {
$T[$EX['object']] = $resvar;
$resvar = null;
}
list($EX['fbc'], $EX['object'], $EX['called_scope']) = array_pop($EX['arg_types_stack']);
break;
// }}}
case XC_VERIFY_ABSTRACT_CLASS: // {{{
//unset($T[$op1['var']]);
break;
// }}}
case XC_DECLARE_CLASS:
case XC_DECLARE_INHERITED_CLASS:
case XC_DECLARE_INHERITED_CLASS_DELAYED: // {{{
$key = $op1['constant'];
// possible missing tailing \0 (outside of the string)
$key = substr($key . ".", 0, strlen($key));
if (!isset($this->dc['class_table'][$key])) {
echo $EX['indent'], "/* class not found: ", $key, ", existing classes are:", PHP_EOL;
var_dump(array_keys($this->dc['class_table']));
echo "*/", PHP_EOL;
break;
}
$class = &$this->dc['class_table'][$key];
if (!isset($class['name'])) {
$class['name'] = unquoteName($this->getOpVal($op2, $EX), $EX);
}
if ($opc == XC_DECLARE_INHERITED_CLASS || $opc == XC_DECLARE_INHERITED_CLASS_DELAYED) {
if (ZEND_ENGINE_2_5) {
$ext = (0xffffffff - $ext + 1) / XC_SIZEOF_TEMP_VARIABLE - 1;
}
else {
$ext /= XC_SIZEOF_TEMP_VARIABLE;
}
$class['parent'] = $T[$ext];
unset($T[$ext]);
}
else {
$class['parent'] = null;
}
for (;;) {
if ($i + 1 <= $range[1]
&& $opcodes[$i + 1]['opcode'] == XC_ADD_INTERFACE
&& $opcodes[$i + 1]['op1']['var'] == $res['var']) {
// continue
}
else if ($i + 2 <= $range[1]
&& $opcodes[$i + 2]['opcode'] == XC_ADD_INTERFACE
&& $opcodes[$i + 2]['op1']['var'] == $res['var']
&& $opcodes[$i + 1]['opcode'] == XC_FETCH_CLASS) {
// continue
}
else {
break;
}
$this->usedOps[XC_ADD_INTERFACE] = true;
$fetchop = &$opcodes[$i + 1];
$interface = $this->stripNamespace(unquoteName($this->getOpVal($fetchop['op2'], $EX), $EX));
$addop = &$opcodes[$i + 2];
$class['interfaces'][$addop['extended_value']] = $interface;
unset($fetchop, $addop);
$i += 2;
}
$this->activeClass = $class['name'];
$this->dclass($class, $EX['indent']);
$this->activeClass = null;
echo PHP_EOL;
unset($class);
break;
// }}}
case XC_INIT_STRING: // {{{
$resvar = "''";
break;
// }}}
case XC_ADD_CHAR:
case XC_ADD_STRING:
case XC_ADD_VAR: // {{{
$op1val = $this->getOpVal($op1, $EX);
$op2val = $this->getOpVal($op2, $EX);
switch ($opc) {
case XC_ADD_CHAR:
$op2val = value(chr(str($op2val)), $EX);
break;
case XC_ADD_STRING:
break;
case XC_ADD_VAR:
break;
}
if (str($op1val) == "''") {
$rvalue = $op2val;
}
else if (str($op2val) == "''") {
$rvalue = $op1val;
}
else {
$rvalue = str($op1val) . ' . ' . str($op2val);
}
$resvar = $rvalue;
// }}}
break;
case XC_PRINT: // {{{
$op1val = $this->getOpVal($op1, $EX);
$resvar = "print(" . str($op1val) . ")";
break;
// }}}
case XC_ECHO: // {{{
$op1val = $this->getOpVal($op1, $EX);
$resvar = "echo " . str($op1val);
break;
// }}}
case XC_EXIT: // {{{
$op1val = $this->getOpVal($op1, $EX);
$resvar = "exit(" . str($op1val) . ")";
break;
// }}}
case XC_INIT_ARRAY:
case XC_ADD_ARRAY_ELEMENT: // {{{
$rvalue = $this->getOpVal($op1, $EX, true);
if ($opc == XC_ADD_ARRAY_ELEMENT) {
$assoc = $this->getOpVal($op2, $EX);
if (isset($assoc)) {
$curResVar->value[] = array($assoc, $rvalue);
}
else {
$curResVar->value[] = array(null, $rvalue);
}
}
else {
if ($opc == XC_INIT_ARRAY) {
$resvar = new Decompiler_Array();
if (!isset($rvalue)) {
continue;
}
}
$assoc = $this->getOpVal($op2, $EX);
if (isset($assoc)) {
$resvar->value[] = array($assoc, $rvalue);
}
else {
$resvar->value[] = array(null, $rvalue);
}
}
break;
// }}}
case XC_QM_ASSIGN:
case XC_QM_ASSIGN_VAR: // {{{
if (isset($curResVar) && is_a($curResVar, 'Decompiler_Binop')) {
$curResVar->op2 = $this->getOpVal($op1, $EX);
}
else {
$resvar = $this->getOpVal($op1, $EX);
}
break;
// }}}
case XC_BOOL: // {{{
$resvar = /*'(bool) ' .*/ $this->getOpVal($op1, $EX);
break;
// }}}
case XC_GENERATOR_RETURN:
case XC_RETURN: // {{{
$resvar = "return " . str($this->getOpVal($op1, $EX));
break;
// }}}
case XC_INCLUDE_OR_EVAL: // {{{
$type = ZEND_ENGINE_2_4 ? $ext : $op2['var']; // hack
$keyword = $this->includeTypes[$type];
$rvalue = str($this->getOpVal($op1, $EX));
if ($type == ZEND_EVAL) {
$resvar = "$keyword($rvalue)";
}
else {
$resvar = "$keyword $rvalue";
}
break;
// }}}
case XC_FE_RESET: // {{{
$resvar = $this->getOpVal($op1, $EX);
break;
// }}}
case XC_FE_FETCH: // {{{
$op['fe_src'] = $this->getOpVal($op1, $EX, true);
$fe = new Decompiler_ForeachBox($op);
$fe->iskey = false;
if (ZEND_ENGINE_2_1) {
// save current first
$T[$res['var']] = $fe;
// move to next opcode
++ $i;
assert($opcodes[$i]['opcode'] == XC_OP_DATA);
$fe = new Decompiler_ForeachBox($op);
$fe->iskey = true;
$res = $opcodes[$i]['result'];
}
$resvar = $fe;
break;
// }}}
case XC_YIELD: // {{{
$resvar = 'yield ' . str($this->getOpVal($op1, $EX));
break;
// }}}
case XC_SWITCH_FREE: // {{{
if (isset($T[$op1['var']])) {
$this->beginComplexBlock($EX);
echo $EX['indent'], 'switch (', str($this->getOpVal($op1, $EX)), ") {", PHP_EOL;
echo $EX['indent'], '}', PHP_EOL;
$this->endComplexBlock($EX);
}
break;
// }}}
case XC_FREE: // {{{
$free = $T[$op1['var']];
if (!is_a($free, 'Decompiler_Box')) {
$op['php'] = is_object($free) ? $free : $this->unquote($free, '(', ')');
$lastphpop = &$op;
}
unset($T[$op1['var']], $free);
break;
// }}}
case XC_JMP_NO_CTOR:
break;
case XC_JMPZ_EX: // and
case XC_JMPNZ_EX: // or
$resvar = $this->getOpVal($op1, $EX);
break;
case XC_JMPNZ: // while
case XC_JMPZNZ: // for
case XC_JMPZ: // {{{
break;
// }}}
case XC_CONT:
case XC_BRK:
$resvar = $opc == XC_CONT ? 'continue' : 'break';
$count = str($this->getOpVal($op2, $EX));
if ($count != '1') {
$resvar .= ' ' . $count;
}
break;
case XC_GOTO:
$resvar = 'goto label' . $op['op1']['var'];
$istmpres = false;
break;
case XC_JMP: // {{{
break;
// }}}
case XC_CASE:
// $switchValue = $this->getOpVal($op1, $EX);
$caseValue = $this->getOpVal($op2, $EX);
$resvar = $caseValue;
break;
case XC_RECV_INIT:
case XC_RECV:
$offset = isset($op1['var']) ? $op1['var'] : $op1['constant'];
$lvalue = $this->getOpVal($op['result'], $EX);
if ($opc == XC_RECV_INIT) {
$default = value($op['op2']['constant'], $EX);
}
else {
$default = null;
}
$EX['recvs'][$offset] = array($lvalue, $default);
break;
case XC_POST_DEC:
case XC_POST_INC:
case XC_POST_DEC_OBJ:
case XC_POST_INC_OBJ:
case XC_PRE_DEC:
case XC_PRE_INC:
case XC_PRE_DEC_OBJ:
case XC_PRE_INC_OBJ: // {{{
$flags = array_flip(explode('_', $opname));
if (isset($flags['OBJ'])) {
$resvar = str($this->getOpVal($op1, $EX)) . '->' . $op2['constant'];
}
else {
$resvar = str($this->getOpVal($op1, $EX));
}
$opstr = isset($flags['DEC']) ? '--' : '++';
if (isset($flags['POST'])) {
$resvar .= $opstr;
}
else {
$resvar = "$opstr$resvar";
}
break;
// }}}
case XC_BEGIN_SILENCE: // {{{
$EX['silence']++;
break;
// }}}
case XC_END_SILENCE: // {{{
$EX['silence']--;
$lastresvar = '@' . str($lastresvar, $EX);
break;
// }}}
case XC_CAST: // {{{
$type = $ext;
static $type2cast = array(
IS_LONG => '(int)',
IS_DOUBLE => '(double)',
IS_STRING => '(string)',
IS_ARRAY => '(array)',
IS_OBJECT => '(object)',
IS_BOOL => '(bool)',
IS_NULL => '(unset)',
);
assert(isset($type2cast[$type]));
$cast = $type2cast[$type];
$resvar = $cast . ' ' . str($this->getOpVal($op1, $EX));
break;
// }}}
case XC_EXT_STMT:
case XC_EXT_FCALL_BEGIN:
case XC_EXT_FCALL_END:
case XC_EXT_NOP:
case XC_INIT_CTOR_CALL:
break;
case XC_DECLARE_FUNCTION:
$key = $op1['constant'];
// possible missing tailing \0 (outside of the string)
$key = substr($key . ".", 0, strlen($key));
$this->dfunction($this->dc['function_table'][$key], $EX['indent']);
break;
case XC_DECLARE_LAMBDA_FUNCTION: // {{{
ob_start();
$key = $op1['constant'];
// possible missing tailing \0 (outside of the string)
$key = substr($key . ".", 0, strlen($key));
$this->dfunction($this->dc['function_table'][$key], $EX['indent']);
$resvar = ob_get_clean();
$istmpres = true;
break;
// }}}
case XC_DECLARE_CONST:
$name = $this->stripNamespace(unquoteName($this->getOpVal($op1, $EX), $EX));
$value = str($this->getOpVal($op2, $EX));
$resvar = 'const ' . $name . ' = ' . $value;
break;
case XC_DECLARE_FUNCTION_OR_CLASS:
/* always removed by compiler */
break;
case XC_TICKS:
$lastphpop['ticks'] = ZEND_ENGINE_2_4 ? $ext : $this->getOpVal($op1, $EX);
// $EX['tickschanged'] = true;
break;
case XC_RAISE_ABSTRACT_ERROR:
// abstract function body is empty, don't need this code
break;
case XC_USER_OPCODE:
echo '// ZEND_USER_OPCODE, impossible to decompile';
break;
case XC_OP_DATA:
break;
default: // {{{
$call = array(&$this, $opname);
if (is_callable($call)) {
$this->usedOps[$opc] = true;
$this->{$opname}($op, $EX);
}
else if (isset($this->binops[$opc])) { // {{{
$this->usedOps[$opc] = true;
$op1val = $this->getOpVal($op1, $EX);
$op2val = $this->getOpVal($op2, $EX);
$rvalue = new Decompiler_Binop($this, $op1val, $opc, $op2val);
$resvar = $rvalue;
// }}}
}
else if (isset($this->unaryops[$opc])) { // {{{
$this->usedOps[$opc] = true;
$op1val = $this->getOpVal($op1, $EX);
$myop = $this->unaryops[$opc];
$rvalue = $myop . str($op1val);
$resvar = $rvalue;
// }}}
}
else {
$notHandled = true;
}
// }}}
}
if ($notHandled) {
echo "\x1B[31m * TODO ", $opname, "\x1B[0m\n";
}
else {
$this->usedOps[$opc] = true;
}
if (isset($resvar)) {
if ($istmpres) {
$T[$res['var']] = $resvar;
$lastresvar = &$T[$res['var']];
}
else {
$op['php'] = $resvar;
$lastphpop = &$op;
$lastresvar = &$op['php'];
}
}
}
return $T;
}
// }}}
function unquote($str, $st, $ed) // {{{
{
$l1 = strlen($st);
$l2 = strlen($ed);
if (substr($str, 0, $l1) === $st && substr($str, -$l2) === $ed) {
$str = substr($str, $l1, -$l2);
}
return $str;
}
// }}}
function popargs(&$EX, $n) // {{{
{
$args = array();
for ($i = 0; $i < $n; $i++) {
$a = array_pop($EX['argstack']);
if (is_array($a)) {
array_unshift($args, foldToCode($a, $EX));
}
else {
array_unshift($args, $a);
}
}
return implode(', ', $args);
}
// }}}
function opToString($op, $which, &$EX) // {{{
{
switch ($op['op_type']) {
case XC_IS_UNUSED:
return '?' . $op['opline_num'];
case XC_IS_VAR:
$s = '$' . $op['var'];
if ($which != 'result' && isset($EX['Ts'])) {
$s .= ':' . str($this->getOpVal($op, $EX, null));
}
return $s;
case XC_IS_TMP_VAR:
$s = '#' . $op['var'];
if ($which != 'result' && isset($EX['Ts'])) {
$s .= ':' . str($this->getOpVal($op, $EX, null));
}
return $s;
case XC_IS_CONST:
return isset($EX['Ts']) ? str($this->getOpVal($op, $EX, null)) : $op['var'] . ':' . var_export($op['constant'], true);
default:
return isset($EX['Ts']) ? str($this->getOpVal($op, $EX, null)) : $op['op_type'] . '?' . $op['var'];
}
}
// }}}
function dumpOp($op, &$EX) // {{{
{
assert('isset($op)');
echo str_pad($op['lineno'], 4);
$name = xcache_get_opcode($op['opcode']);
if (substr($name, 0, 5) == 'ZEND_') {
$name = substr($name, 5);
}
echo str_pad($name, 25);
$types = array('result' => 9, 'op1' => 20, 'op2' => 20);
foreach ($types as $which => $len) {
echo str_pad(($which == 'result' ? '>' : '') . $this->opToString($op[$which], $which, $EX), $len);
}
echo "\t;", $op['extended_value'];
if (isset($op['isCatchBegin'])) {
echo ' CB';
}
if (!empty($op['jmptos'])) {
echo "\t>>", implode(',', $op['jmptos']);
}
if (!empty($op['jmpfroms'])) {
echo "\t<<", implode(',', $op['jmpfroms']);
}
echo PHP_EOL;
}
// }}}
function dumpRange($range) // {{{
{
;
$EX = &$range['EX'];
if (!$this->inComment++) {
echo $EX['indent'], "/*", PHP_EOL;
}
for ($i = $range[0]; $i <= $range[1]; ++$i) {
echo $EX['indent'], str_pad($i, 4);
$this->dumpOp($EX['opcodes'][$i], $EX);
}
if (!--$this->inComment) {
echo $EX['indent'], "*/", PHP_EOL;
}
}
// }}}
function dargs(&$EX) // {{{
{
$op_array = &$EX['op_array'];
if (isset($op_array['num_args'])) {
$c = $op_array['num_args'];
}
else if (!empty($op_array['arg_types'])) {
$c = count($op_array['arg_types']);
}
else {
// php4
$c = count($EX['recvs']);
}
$refrest = false;
for ($i = 0; $i < $c; $i++) {
if ($i) {
echo ', ';
}
$arg = $EX['recvs'][$i + 1];
if (isset($op_array['arg_info'])) {
$ai = $op_array['arg_info'][$i];
if (isset($ai['type_hint']) ? ($ai['type_hint'] == IS_CALLABLE || $ai['type_hint'] == IS_OBJECT) : !empty($ai['class_name'])) {
echo $this->stripNamespace($ai['class_name']), ' ';
if (!ZEND_ENGINE_2_2 && $ai['allow_null']) {
echo 'or NULL ';
}
}
else if (isset($ai['type_hint']) ? $ai['type_hint'] == IS_ARRAY : !empty($ai['array_type_hint'])) {
echo 'array ';
if (!ZEND_ENGINE_2_2 && $ai['allow_null']) {
echo 'or NULL ';
}
}
if ($ai['pass_by_reference']) {
echo '&';
}
printf("\$%s", $ai['name']);
}
else {
if ($refrest) {
echo '&';
}
else if (!empty($op_array['arg_types']) && isset($op_array['arg_types'][$i])) {
switch ($op_array['arg_types'][$i]) {
case BYREF_FORCE_REST:
$refrest = true;
/* fall */
case BYREF_FORCE:
echo '&';
break;
case BYREF_NONE:
case BYREF_ALLOW:
break;
default:
assert(0);
}
}
echo str($arg[0], $EX);
}
if (isset($arg[1])) {
echo ' = ', str($arg[1], $EX);
}
}
}
// }}}
function duses(&$EX) // {{{
{
if ($EX['uses']) {
echo " use(", implode(', ', $EX['uses']), ')';
}