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vm_enter.js
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vm_enter.js
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var {JSDOM} = require("jsdom");
var {window} = new JSDOM(`
<!doctype html>
<html>
<body>
<head>
<div style="">
<meta content="">
<meta>
</div>
<div>
bobo1
</div>
<div>
bobo2
</div>
</head>
</body>
</html>
`);
global["window"] = window;
fs = require("fs");
zcj_console = console.log;
console.log = function () {
try{
if (arguments[0] === ">>" && arguments[1] == 77 && arguments[2] == 49) {
debugger
}
}
catch (e){
}
return zcj_console.apply(undefined, arguments);
}
var OPCODE = {
PASS: 11, // 这是个无用字节码,不作任何操作
PUSH_NUM: 12,
PUSH_STR: 13,
PUSH_NULL: 14,
PUSH_UNDEFINED: 15,
PUSH_WINDOW: 65, // 主要是this可能是构造器,导致这个this不是window了.
PUSH_VAR: 66, // 将变量池里的变量压入栈
MOV_VAR: 67, // 对变量进行赋值
PUSH_THIS: 68, // push this => 泛指window
PUSH_CONSTANT: 69, // push 变量池
GET_OBJ: 51, // window.console , 获取对象下的属性/对象 ; 数组也是对象,同理;
SET_OBJ: 52, // window.console = xxx ; 数组也是对象,同理;
APPLY: 53, // 方法调用
COMPUTE: 54, // 运算,两个参数
SINGLE_COMPUTE: 55, // 运算,单个参数
UPDATE: 56, // a++ ++a --a a--
NEW_ARRAY: 30, //创建一个空的数组
NEW_OBJECT: 31, //创建一个空对象
NEW_FUNC: 32, // 创建一个function
NEW_CONSTRUCT: 33, // new 一个构造体
UPDATE_STACK: 20,
DECREMENT_STACK: 21,
TRY: 40,
CATCH: 41,
TRUE: 42,
FALSE: 43,
THROW: 44,
CATCH_OVER: 45,
DELETE: 46,
DEBUG: 47,
FORIN: 48,
RETURN: 88,
IS_TRUE: 89,
SKIP_BLOCK: 90,
GOTO: 91, // 跳转到循环头位置
BREAK: 92, // break, 正常的思路应该是break出一段代码的.
CONTINUE: 93, // continue
'*': 1000,
'/': 1001,
'%': 1002,
'+': 1003,
'-': 1004,
'<<': 1005,
'>>': 1006,
'>>>': 1007,
'>': 1008,
'<': 1009,
'>=': 1010,
'<=': 1011,
'==': 1012,
'===': 1013,
'!==': 1014,
'!=': 1015,
'&': 1016,
'^': 1017,
'|': 1018,
'=': 1019,
'*=': 1020,
'/=': 1021,
'%=': 1022,
'&=': 1023,
'+=': 1024,
'-=': 1025,
'<<=': 1026,
'>>=': 1027,
'^=': 1028,
'|=': 1029,
'in': 1030,
'instanceof': 1031,
}
var OPCODE1 = {
'!': 1032,
'+': 1033,
'-': 1034,
'~': 1035,
'typeof': 1036,
'void': 1037,
};
(function (constant) {
function vm_enter(opcode, index, constant, stack, esp, obj_arr) {
function vm_opcodeToString(e, s) {
var a = String["fromCharCode"], b = [];
for (m = 0; m < e.length; m++) {
b[m] = a["apply"](String, [e[m]]);
}
return s = b.join('');
}
function vm_push(e, s) {
return vm_stack[vm_stack.vm_esp++] = e, s;
}
function vm_push_2(e, s) {
return vm_stack[vm_stack.vm_esp] = e, vm_stack.vm_esp++, s;
}
function vm_push_fake_3(e, s) {
return vm_stack[++vm_stack.vm_esp] = e, vm_stack.vm_esp--, s;
}
function vm_push_fake_2(e, s) {
return s = vm_stack[vm_stack.vm_esp], vm_stack[vm_stack.vm_esp++] = s, vm_stack.vm_esp--, e;
}
function vm_push_fake_1(e, s) {
return vm_stack[vm_stack.vm_esp + 1] = e, s;
}
function vm_update_stack(e, s) {
return vm_stack.vm_esp++, s;
}
function vm_decrement_stack(e, s) {
return vm_stack.vm_esp--, s;
}
function vm_slice() {
var result;
// 字符串长度
h = vm_get_opcode();
// result = opcode.slice(index, index + h).split("").map((opc) => {
// return opc.charCodeAt() - 32
// });
result = opcode.slice(index, index + h);
// result = op_slice(this, index, index + h);
index += h;
return result;
}
function vm_stack_slice(s, e) {
// return vm_stack.splice(s, e);
return stack_splice(this, s, e);
}
function vm_get_value() {
if (vm_stack.vm_esp == 0){debugger;}
return vm_stack[--vm_stack.vm_esp];
}
function vm_get_value_fake() {
return vm_stack[vm_stack.vm_esp - 1];
}
function vm_get_opcode() {
return opcode[index++];
}
function vmExpression_single_calc(symbol, opNum1) {
switch (symbol) {
case "!":
return !opNum1
case "+":
return +opNum1
case "-":
return -opNum1
case "~":
return ~opNum1
case "typeof":
return typeof opNum1;
case "void":
return void opNum1;
default:
// debugger;
console.log("vmExpression_single_calc 没有这个 symbol =>", symbol);
return undefined
}
}
function vmExpression_calc(symbol, opNum2, opNum1) {
switch (symbol) {
case "*":
return opNum1 * opNum2
case "/":
return opNum1 / opNum2
case "%":
return opNum1 % opNum2
case "+":
return opNum1 + opNum2
case "-":
return opNum1 - opNum2
case "<<":
return opNum1 << opNum2
case ">>":
return opNum1 >> opNum2
case ">>>":
return opNum1 >>> opNum2
case ">":
return opNum1 > opNum2
case "<":
return opNum1 < opNum2
case ">=":
return opNum1 >= opNum2
case "<=":
return opNum1 <= opNum2
case "==":
return opNum1 == opNum2
case "===":
return opNum1 === opNum2
case "!==":
return opNum1 !== opNum2
case "!=":
return opNum1 != opNum2
case "&":
return opNum1 & opNum2
case "^":
return opNum1 ^ opNum2
case "|":
return opNum1 | opNum2
case "&&":
return opNum1 && opNum2
case "||":
return opNum1 || opNum2
case "=":
return opNum1 = opNum2
case "*=":
return opNum1 *= opNum2
case "/=":
return opNum1 /= opNum2
case "%=":
return opNum1 %= opNum2
case "&=":
return opNum1 &= opNum2
case "+=":
return opNum1 += opNum2
case "-=":
return opNum1 -= opNum2
case "<<=":
return opNum1 <<= opNum2
case ">>=":
return opNum1 >>= opNum2
case "^=":
return opNum1 ^= opNum2
case "|=":
return opNum1 |= opNum2
case "in":
return opNum1 in opNum2
case "instanceof":
return opNum1 instanceof opNum2
default:
console.log("vmExpression_calc 没有这个 symbol =>", symbol)
return undefined
}
}
function vm_call(s, e, p, args, constant) {
var i;
if (!p_constant) var p_constant = {};
for (i = 0; i < p.length; i++) {
p_constant[p[i]] = args[i];
}
Object.setPrototypeOf(p_constant, constant);
p_constant["arguments"] = args;
// 通过args把需要的参数放到当前常量池中去,然后开始调用
h = vm_enter.apply(this, [opcode.slice(s, e), 0, p_constant, [], 0, []]);
if (Array.isArray(h)){
h = h[1]
}
else return;
return h;
}
var is_console = false;
var vm_stack, h, y, d, g, m, cz, zc,
hj, jk, lk, ik,
vm_constant = constant, stack_splice, op_slice;
for (var i in obj_arr) {
vm_constant[obj_arr[i]] = this["window"][obj_arr[i]];
}
let get_key = (object, value) => {
return Object.keys(object).find(key => object[key] === value)
};
vm_stack = !stack ? [] : stack;
vm_stack.vm_esp = esp;
cz = [];
zc = cz.splice;
stack_splice = zc.bind(vm_stack).call.bind(zc.bind(vm_stack));
op_slice = zc.bind(opcode).call.bind(zc.bind(opcode));
for (; ;) {
// g = vm_get_opcode();
g = opcode[index++];
// console.log(g, index);
// console.log(g, "对应的指令 =>", get_key(OPCODE, g), " , 下一条指令 =>", opcode[index] , " index => " , index - 1);
// if (!get_key(OPCODE, g)) {
// debugger
// }
// console.log(get_key(OPCODE, g));
// g = opcode[index++];
// if (vm_stack.vm_esp === -1) {
// console.log("堆栈索引都到-1了！！gg");
// debugger;
// }
if (Number.isNaN(g) || !g) {
break
}
switch (g) {
case OPCODE.PUSH_WINDOW:
vm_push(window);
break
case OPCODE.PUSH_STR:
h = vm_opcodeToString.apply(undefined, [vm_slice()]);
vm_push(h);
// if (is_console) {
// console.log("push 字符串 => ", h);
// }
break
case OPCODE.PUSH_NUM:
h = vm_get_opcode();
vm_push(h);
break
case OPCODE.PUSH_NULL:
vm_push(null);
break
case OPCODE.PUSH_UNDEFINED:
vm_push(void 0);
break
case OPCODE.PUSH_CONSTANT:
vm_push(vm_constant);
break
case OPCODE.PUSH_THIS:
vm_push(this);
break
case OPCODE.PUSH_VAR:
d = vm_get_value();
y = vm_get_value();
// console.log("push key => ", y);
if (d === undefined || y === undefined || d[y] === undefined) {
vm_push(undefined);
// console.log(" 对象 => ", !!d && d.toString(), " key => ", y)
break;
}
if (d === vm_constant && !d.hasOwnProperty(y)) {
h = d.__proto__;
while (h != null) {
if (h.hasOwnProperty(y)) {
d = h;
break
}
h = h.__proto__;
}
}
vm_push(d[y]);
if (is_console) {
console.log("push 对象 => ", d[y].toString(), "对象 => ", d.toString(), " key => ", y);
}
break
case OPCODE.MOV_VAR:
/* 变量池或者其他的 */
d = vm_get_value();
/* key */
y = vm_get_value();
if (d === vm_constant && !d.hasOwnProperty(y)) {
h = d.__proto__;
while (h != null) {
if (h.hasOwnProperty(y)) {
d = h;
break
}
h = h.__proto__;
}
}
/* value */
h = vm_get_value();
d[y] = h;
break
case OPCODE.COMPUTE:
/* d是第二个 */
d = vm_get_value();
/* y是第一个 */
y = vm_get_value();
/* symbol */
h = vm_get_value();
vm_push(vmExpression_calc(h, d, y));
break
case OPCODE.SINGLE_COMPUTE:
/* 这里有二个值, 堆栈里的值,一个是标识符 */
d = vm_get_value();
/* symbol */
y = vm_get_value();
vm_push(vmExpression_single_calc(y, d));
break
case OPCODE.UPDATE:
/* 这里有二个值, 对象, key 最后是标识符 */
/* 对象 */
d = vm_get_value();
/* key */
h = vm_get_value();
/* symbol */
y = vm_get_value();
switch (y) {
case "++":
d[h]++;
break
case "--":
d[h]--;
break
}
break
case OPCODE.NEW_ARRAY:
/* new 一个 array 后面跟的是初始化的对象个数 */
y = vm_get_opcode();
// d = Array();
// for (var i = 0; i < y; i++) {
// d[y - i - 1] = vm_get_value();
// }
d = vm_stack_slice(vm_stack.vm_esp - y, y);
vm_stack.vm_esp = vm_stack.vm_esp - y;
vm_push(d);
break
case OPCODE.GET_OBJ:
/* 对象, key, 将值压入堆栈 */
y = vm_get_value();
d = vm_get_value();
h = y[d];
// h = vm_get_value()[vm_get_value()];
if (is_console) {
try {
console.log("GET_OBJ => ", d[y].toString(), "对象 => ", d.toString(), " key => ", y);
} catch (e) {
// debugger;
}
}
vm_push(h);
break;
case OPCODE.SET_OBJ:
/* 对象,key,进行赋值 */
y = vm_get_value();
d = vm_get_value();
h = vm_get_value();
y[d] = h;
// if (is_console) {
// console.log("SET_OBJ => ", d[y].toString(), "对象 => ", d.toString(), " key => ", y);
// }
/* 这样更具迷惑性 */
// vm_get_value()[vm_get_value()] = vm_get_value();
break
case OPCODE.NEW_OBJECT:
y = {};
d = vm_get_opcode();
for (var i = 0; i < d; i++) {
m = vm_get_value();
h = vm_get_value();
y[h] = m;
}
vm_stack_slice(vm_stack.vm_esp, vm_stack.length - 1);
vm_push(y);
break
case OPCODE.APPLY:
/* 定义在window下的方法,this是window,那在构造方法下呢? */
/* 调用者 */
y = vm_get_value();
/* 自定义方法 */
h = vm_get_value();
/* 传参 */
d = vm_get_value();
if (h === undefined) {
debugger
break
}
if (!!h.aaa) {
/* 这里this还没判断啊~ 很烦 */
d = h.apply(y, d);
} else {
/* 方法 */
if (h.name === "toString") {
/* toString(16) */
if (d.length > 1) {
console.log("toString 传参超过2个 ~~");
} else {
d = y.toString(d[0]);
}
} else if (h === undefined) {
/* 调用者为空 有bug 有bug */
// console.log("调用者为空 有bug!!!")
// debugger;
break;
} else {
d = h.apply(y, d);
}
}
/* 方法调用管你要不要值,我都直接push到堆栈里呢 */
vm_push(d);
break
case OPCODE.NEW_FUNC:
y = vm_get_opcode();
d = index;
index += y;
vm_push(function () {
return zzz.aaa = d,
zzz.bbb = index,
zzz.ccc = vm_stack[--vm_stack.vm_esp],
zzz;
function zzz() {
h = vm_call.apply(this, [zzz.aaa, zzz.bbb, zzz.ccc, arguments, vm_constant]);
return h;
}
}
());
break
case OPCODE.IS_TRUE:
y = vm_get_value();
if (!!y) {
index++;
} else {
d = vm_get_opcode();
index += d;
}
break
case OPCODE.SKIP_BLOCK:
y = vm_get_opcode();
index += y;
break
case OPCODE.GOTO:
/* 这里可能会有问题 */
index -= vm_get_opcode();
break
case OPCODE.NEW_CONSTRUCT:
/* 传参 */
d = vm_get_value();
/* 调用者/自定义方法 */
y = vm_get_value();
h = new y(...d);
vm_push(h);
// try {
// vm_push(new y(...d));
// } catch (e) {
// console.log("new 出霸哥~");
// debugger;
// // throw "new 出霸哥~"
// }
break
case OPCODE.BREAK:
y = vm_get_opcode();
index += y;
if (index > opcode.length) {
// console.log("break 超出当前opcode字节码数组长度~ return 上一层");
return [OPCODE.BREAK, y];
}
break
case OPCODE.CONTINUE:
y = vm_get_opcode();
index -= y;
if (index < 0 || index > opcode.length) {
// console.log("continue 超出当前opcode字节码数组长度~ return 上一层");
return [OPCODE.CONTINUE, y];
}
break
case OPCODE.PASS:
break
case OPCODE.TRUE:
h = void 0;
y = !h;
vm_push(y);
break
case OPCODE.FALSE:
m = void 0;
d = !!m;
vm_push(d);
break
case OPCODE.THROW:
throw vm_get_value();
case OPCODE.TRY:
try {
/* 现在的索引 */
d = index;
/* try opcode */
y = vm_slice();
d += y.length + 1;
h = vm_enter.apply(this, [y, 0, vm_constant, vm_stack, vm_stack.vm_esp, []]);
if (Array.isArray(h)) {
d = h[0] , y = h[1];
/* 这里多了2 try + slice 导致的index+2 */
switch (d) {
case OPCODE.BREAK:
index += y;
if (index > opcode.length) {
// console.log("try break 超出当前opcode字节码数组长度~ return 上一层");
return [OPCODE.BREAK, y];
}
break
case OPCODE.CONTINUE:
index -= y;
if (index < 0 || index > opcode.length) {
// console.log("try continue 超出当前opcode字节码数组长度~ return 上一层");
return [OPCODE.CONTINUE, y];
}
break
default:
// console.log("try 非BREAK CONTINUE 指令返回 => return ", h);
return h;
}
}
} catch (e) {
vm_push(e);
index = d + 2;
}
break
case OPCODE.FORIN:
d = vm_get_value();
zc = vm_slice();
for (cz in d) {
vm_push(cz);
h = vm_enter.apply(this, [zc, 0, vm_constant, vm_stack, vm_stack.vm_esp, []]);
if (Array.isArray(h)) {
m = h[0] , y = h[1];
/* 这里多了2 try + slice 导致的index+2 */
switch (m) {
case OPCODE.BREAK:
break
case OPCODE.CONTINUE:
continue;
default:
console.log("try 非BREAK CONTINUE 指令返回 => return ", h);
return h;
}
}
}
break
case OPCODE.UPDATE_STACK:
/* 把之前的值拿下来 */
vm_stack.vm_esp++;
break
case OPCODE.DECREMENT_STACK:
vm_stack.vm_esp--;
break
case OPCODE.DELETE:
d = vm_get_value();
h = vm_get_value();
delete h[d];
// delete h[d];
break
case OPCODE.RETURN:
y = vm_get_value();
return [0, y];
case OPCODE.DEBUG:
debugger;
break
case OPCODE["*"]:
d = vm_get_value();
h = vm_get_value();
y = h * d;
vm_push(y);
break;
case OPCODE["/"]:
d = vm_get_value();
h = vm_get_value();
y = h / d;
vm_push(y);
break;
case OPCODE["%"]:
d = vm_get_value();
h = vm_get_value();
y = h % d;
vm_push(y);
break;
case OPCODE["+"]:
d = vm_get_value();
h = vm_get_value();
y = h + d;
vm_push(y);
break;
case OPCODE["-"]:
d = vm_get_value();
h = vm_get_value();
y = h - d;
vm_push(y);
break;
case OPCODE["<<"]:
d = vm_get_value();
h = vm_get_value();
y = h << d;
vm_push(y);
break;
case OPCODE[">>"]:
d = vm_get_value();
h = vm_get_value();
y = h >> d;
vm_push(y);
break;
case OPCODE[">>>"]:
d = vm_get_value();
h = vm_get_value();
y = h >>> d;
vm_push(y);
break;
case OPCODE[">"]:
d = vm_get_value();
h = vm_get_value();
y = h > d;
vm_push(y);
break;
case OPCODE["<"]:
d = vm_get_value();
h = vm_get_value();
y = h < d;
vm_push(y);
break;
case OPCODE[">="]:
d = vm_get_value();
h = vm_get_value();
y = h >= d;
vm_push(y);
break;
case OPCODE["<="]:
d = vm_get_value();
h = vm_get_value();
y = h <= d;
vm_push(y);
break;
case OPCODE["=="]:
d = vm_get_value();
h = vm_get_value();
y = h == d;
vm_push(y);
break;
case OPCODE["==="]:
d = vm_get_value();
h = vm_get_value();
y = h === d;
vm_push(y);
break;
case OPCODE["!=="]:
d = vm_get_value();
h = vm_get_value();
y = h !== d;
vm_push(y);
break;
case OPCODE["!="]:
d = vm_get_value();
h = vm_get_value();
y = h != d;
vm_push(y);
break;
case OPCODE["&"]:
d = vm_get_value();
h = vm_get_value();
y = h & d;
vm_push(y);
break;
case OPCODE["^"]:
d = vm_get_value();
h = vm_get_value();
y = h ^ d;
vm_push(y);
break;
case OPCODE["|"]:
d = vm_get_value();
h = vm_get_value();
y = h | d;
vm_push(y);
break;
case OPCODE["="]:
d = vm_get_value();
h = vm_get_value();
y = h = d;
vm_push(y);
break;
case OPCODE["*="]:
d = vm_get_value();
h = vm_get_value();
y = h *= d;
vm_push(y);
break;
case OPCODE["/="]:
d = vm_get_value();
h = vm_get_value();
y = h /= d;
vm_push(y);
break;
case OPCODE["%="]:
d = vm_get_value();
h = vm_get_value();
y = h %= d;
vm_push(y);
break;
case OPCODE["&="]:
d = vm_get_value();
h = vm_get_value();
y = h &= d;
vm_push(y);
break;
case OPCODE["+="]:
d = vm_get_value();
h = vm_get_value();
y = h += d;
vm_push(y);
break;
case OPCODE["-="]:
d = vm_get_value();
h = vm_get_value();
y = h -= d;
vm_push(y);
break;
case OPCODE["<<="]:
d = vm_get_value();
h = vm_get_value();
y = h <<= d;
vm_push(y);
break;
case OPCODE[">>="]:
d = vm_get_value();
h = vm_get_value();
y = h >>= d;
vm_push(y);
break;
case OPCODE["^="]:
d = vm_get_value();
h = vm_get_value();
y = h ^= d;
vm_push(y);
break;
case OPCODE["|="]:
d = vm_get_value();
h = vm_get_value();
y = h |= d;
vm_push(y);
break;
case OPCODE["in"]:
d = vm_get_value();
h = vm_get_value();
y = h in d;
vm_push(y);
break;
case OPCODE["instanceof"]:
d = vm_get_value();
h = vm_get_value();
y = h instanceof d;
vm_push(y);
break;
case OPCODE1["!"]:
d = vm_get_value();
h = vm_get_value_fake();
y = !d;
vm_push(y);
break;
case OPCODE1["+"]:
d = vm_get_value();
h = vm_get_value_fake();
y = +d
vm_push(y);
break;
case OPCODE1["-"]:
d = vm_get_value();
h = vm_get_value_fake();
y = -d;
vm_push(y);
break;
case OPCODE1["~"]:
d = vm_get_value();
h = vm_get_value_fake();
y = ~d
vm_push(y);
break;
case OPCODE1["typeof"]:
d = vm_get_value();
h = vm_get_value_fake();
y = typeof d;
vm_push(y);
break;
case OPCODE1["void"]:
d = vm_get_value();
h = vm_get_value_fake();
y = void d;
vm_push(y);
break;
default:
console.log("index => ", index, "opcode => err => ", g);
debugger;
}
}
}
var opcode = eval(fs.readFileSync("./opcode.txt") + '')
/* collect 存放for循环test 后 IS_TRUE的索引 */
vm_enter(opcode, 0, constant, void 0, 0, ['window']);
}).apply(window, [constant = {"$_jsvmp": true}])
// console.log(window.md5(''))