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Code Issues Releases Wiki Activity

Merge remote-tracking branch 'comic-reader/master'

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This commit is contained in:
Ozzieisaacs 2019-05-31 08:43:51 +02:00
commit 26e45f1f57
12 changed files with 2304 additions and 747 deletions
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112
cps/static/js/archive.js → cps/static/js/archive/archive.js
View File

@ -17,7 +17,7 @@ bitjs.archive = bitjs.archive || {};
// ===========================================================================
// Stolen from Closure because it's the best way to do Java-like inheritance.
bitjs.base = function(me, optMethodName, varArgs) {
bitjs.base = function(me, opt_methodName, var_args) {
var caller = arguments.callee.caller;
if (caller.superClass_) {
// This is a constructor. Call the superclass constructor.
@ -27,12 +27,11 @@ bitjs.archive = bitjs.archive || {};
var args = Array.prototype.slice.call(arguments, 2);
var foundCaller = false;
for (var ctor = me.constructor;
ctor; ctor = ctor.superClass_ && ctor.superClass_.constructor) {
if (ctor.prototype[optMethodName] === caller) {
for (var ctor = me.constructor; ctor; ctor = ctor.superClass_ && ctor.superClass_.constructor) {
if (ctor.prototype[opt_methodName] === caller) {
foundCaller = true;
} else if (foundCaller) {
return ctor.prototype[optMethodName].apply(me, args);
return ctor.prototype[opt_methodName].apply(me, args);
}
}
@ -40,8 +39,8 @@ bitjs.archive = bitjs.archive || {};
// then one of two things happened:
// 1) The caller is an instance method.
// 2) This method was not called by the right caller.
if (me[optMethodName] === caller) {
return me.constructor.prototype[optMethodName].apply(me, args);
if (me[opt_methodName] === caller) {
return me.constructor.prototype[opt_methodName].apply(me, args);
} else {
throw Error(
"goog.base called from a method of one name " +
@ -50,10 +49,10 @@ bitjs.archive = bitjs.archive || {};
};
bitjs.inherits = function(childCtor, parentCtor) {
/** @constructor */
function TempCtor() {}
TempCtor.prototype = parentCtor.prototype;
function tempCtor() {};
tempCtor.prototype = parentCtor.prototype;
childCtor.superClass_ = parentCtor.prototype;
childCtor.prototype = new TempCtor();
childCtor.prototype = new tempCtor();
childCtor.prototype.constructor = childCtor;
};
// ===========================================================================
@ -66,10 +65,10 @@ bitjs.archive = bitjs.archive || {};
*/
bitjs.archive.UnarchiveEvent = function(type) {
/**
* The event type.
*
* @type {string}
*/
* The event type.
*
* @type {string}
*/
this.type = type;
};
@ -94,10 +93,10 @@ bitjs.archive = bitjs.archive || {};
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.INFO);
/**
* The information message.
*
* @type {string}
*/
* The information message.
*
* @type {string}
*/
this.msg = msg;
};
bitjs.inherits(bitjs.archive.UnarchiveInfoEvent, bitjs.archive.UnarchiveEvent);
@ -111,10 +110,10 @@ bitjs.archive = bitjs.archive || {};
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.ERROR);
/**
* The information message.
*
* @type {string}
*/
* The information message.
*
* @type {string}
*/
this.msg = msg;
};
bitjs.inherits(bitjs.archive.UnarchiveErrorEvent, bitjs.archive.UnarchiveEvent);
@ -178,8 +177,8 @@ bitjs.archive = bitjs.archive || {};
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.EXTRACT);
/**
* @type {UnarchivedFile}
*/
* @type {UnarchivedFile}
*/
this.unarchivedFile = unarchivedFile;
};
bitjs.inherits(bitjs.archive.UnarchiveExtractEvent, bitjs.archive.UnarchiveEvent);
@ -189,28 +188,28 @@ bitjs.archive = bitjs.archive || {};
* Base class for all Unarchivers.
*
* @param {ArrayBuffer} arrayBuffer The Array Buffer.
* @param {string} optPathToBitJS Optional string for where the BitJS files are located.
* @param {string} opt_pathToBitJS Optional string for where the BitJS files are located.
* @constructor
*/
bitjs.archive.Unarchiver = function(arrayBuffer, optPathToBitJS) {
bitjs.archive.Unarchiver = function(arrayBuffer, opt_pathToBitJS) {
/**
* The ArrayBuffer object.
* @type {ArrayBuffer}
* @protected
*/
* The ArrayBuffer object.
* @type {ArrayBuffer}
* @protected
*/
this.ab = arrayBuffer;
/**
* The path to the BitJS files.
* @type {string}
* @private
*/
this.pathToBitJS_ = optPathToBitJS || "";
* The path to the BitJS files.
* @type {string}
* @private
*/
this.pathToBitJS_ = opt_pathToBitJS || "/";
/**
* A map from event type to an array of listeners.
* @type {Map.<string, Array>}
*/
* A map from event type to an array of listeners.
* @type {Map.<string, Array>}
*/
this.listeners_ = {};
for (var type in bitjs.archive.UnarchiveEvent.Type) {
this.listeners_[bitjs.archive.UnarchiveEvent.Type[type]] = [];
@ -282,7 +281,7 @@ bitjs.archive = bitjs.archive || {};
/**
* Starts the unarchive in a separate Web Worker thread and returns immediately.
*/
*/
bitjs.archive.Unarchiver.prototype.start = function() {
var me = this;
var scriptFileName = this.pathToBitJS_ + this.getScriptFileName();
@ -320,8 +319,8 @@ bitjs.archive = bitjs.archive || {};
* @extends {bitjs.archive.Unarchiver}
* @constructor
*/
bitjs.archive.Unzipper = function(arrayBuffer, optPathToBitJS) {
bitjs.base(this, arrayBuffer, optPathToBitJS);
bitjs.archive.Unzipper = function(arrayBuffer, opt_pathToBitJS) {
bitjs.base(this, arrayBuffer, opt_pathToBitJS);
};
bitjs.inherits(bitjs.archive.Unzipper, bitjs.archive.Unarchiver);
bitjs.archive.Unzipper.prototype.getScriptFileName = function() {
@ -333,8 +332,8 @@ bitjs.archive = bitjs.archive || {};
* @extends {bitjs.archive.Unarchiver}
* @constructor
*/
bitjs.archive.Unrarrer = function(arrayBuffer, optPathToBitJS) {
bitjs.base(this, arrayBuffer, optPathToBitJS);
bitjs.archive.Unrarrer = function(arrayBuffer, opt_pathToBitJS) {
bitjs.base(this, arrayBuffer, opt_pathToBitJS);
};
bitjs.inherits(bitjs.archive.Unrarrer, bitjs.archive.Unarchiver);
bitjs.archive.Unrarrer.prototype.getScriptFileName = function() {
@ -346,12 +345,35 @@ bitjs.archive = bitjs.archive || {};
* @extends {bitjs.archive.Unarchiver}
* @constructor
*/
bitjs.archive.Untarrer = function(arrayBuffer, optPathToBitJS) {
bitjs.base(this, arrayBuffer, optPathToBitJS);
bitjs.archive.Untarrer = function(arrayBuffer, opt_pathToBitJS) {
bitjs.base(this, arrayBuffer, opt_pathToBitJS);
};
bitjs.inherits(bitjs.archive.Untarrer, bitjs.archive.Unarchiver);
bitjs.archive.Untarrer.prototype.getScriptFileName = function() {
return "untar.js";
};
/**
* Factory method that creates an unarchiver based on the byte signature found
* in the arrayBuffer.
* @param {ArrayBuffer} ab
* @param {string=} opt_pathToBitJS Path to the unarchiver script files.
* @return {bitjs.archive.Unarchiver}
*/
bitjs.archive.GetUnarchiver = function(ab, opt_pathToBitJS) {
var unarchiver = null;
var pathToBitJS = opt_pathToBitJS || '';
var h = new Uint8Array(ab, 0, 10);
if (h[0] == 0x52 && h[1] == 0x61 && h[2] == 0x72 && h[3] == 0x21) { // Rar!
unarchiver = new bitjs.archive.Unrarrer(ab, pathToBitJS);
} else if (h[0] == 80 && h[1] == 75) { // PK (Zip)
unarchiver = new bitjs.archive.Unzipper(ab, pathToBitJS);
} else { // Try with tar
console.log('geter');
unarchiver = new bitjs.archive.Untarrer(ab, pathToBitJS);
}
return unarchiver;
};
})();

858
cps/static/js/archive/rarvm.js Normal file
View File

@ -0,0 +1,858 @@
/**
* rarvm.js
*
* Licensed under the MIT License
*
* Copyright(c) 2017 Google Inc.
*/
/**
* CRC Implementation.
*/
var CRCTab = new Array(256).fill(0);
function InitCRC() {
for (var i = 0; i < 256; ++i) {
var c = i;
for (var j = 0; j < 8; ++j) {
// Read http://stackoverflow.com/questions/6798111/bitwise-operations-on-32-bit-unsigned-ints
// for the bitwise operator issue (JS interprets operands as 32-bit signed
// integers and we need to deal with unsigned ones here).
c = ((c & 1) ? ((c >>> 1) ^ 0xEDB88320) : (c >>> 1)) >>> 0;
}
CRCTab[i] = c;
}
}
/**
* @param {number} startCRC
* @param {Uint8Array} arr
* @return {number}
*/
function CRC(startCRC, arr) {
if (CRCTab[1] == 0) {
InitCRC();
}
/*
#if defined(LITTLE_ENDIAN) && defined(PRESENT_INT32) && defined(ALLOW_NOT_ALIGNED_INT)
while (Size>0 && ((long)Data & 7))
{
StartCRC=CRCTab[(byte)(StartCRC^Data[0])]^(StartCRC>>8);
Size--;
Data++;
}
while (Size>=8)
{
StartCRC^=*(uint32 *)Data;
StartCRC=CRCTab[(byte)StartCRC]^(StartCRC>>8);
StartCRC=CRCTab[(byte)StartCRC]^(StartCRC>>8);
StartCRC=CRCTab[(byte)StartCRC]^(StartCRC>>8);
StartCRC=CRCTab[(byte)StartCRC]^(StartCRC>>8);
StartCRC^=*(uint32 *)(Data+4);
StartCRC=CRCTab[(byte)StartCRC]^(StartCRC>>8);
StartCRC=CRCTab[(byte)StartCRC]^(StartCRC>>8);
StartCRC=CRCTab[(byte)StartCRC]^(StartCRC>>8);
StartCRC=CRCTab[(byte)StartCRC]^(StartCRC>>8);
Data+=8;
Size-=8;
}
#endif
*/
for (var i = 0; i < arr.length; ++i) {
var byte = ((startCRC ^ arr[i]) >>> 0) & 0xff;
startCRC = (CRCTab[byte] ^ (startCRC >>> 8)) >>> 0;
}
return startCRC;
}
// ============================================================================================== //
/**
* RarVM Implementation.
*/
var VM_MEMSIZE = 0x40000;
var VM_MEMMASK = (VM_MEMSIZE - 1);
var VM_GLOBALMEMADDR = 0x3C000;
var VM_GLOBALMEMSIZE = 0x2000;
var VM_FIXEDGLOBALSIZE = 64;
var MAXWINSIZE = 0x400000;
var MAXWINMASK = (MAXWINSIZE - 1);
/**
*/
var VM_Commands = {
VM_MOV: 0,
VM_CMP: 1,
VM_ADD: 2,
VM_SUB: 3,
VM_JZ: 4,
VM_JNZ: 5,
VM_INC: 6,
VM_DEC: 7,
VM_JMP: 8,
VM_XOR: 9,
VM_AND: 10,
VM_OR: 11,
VM_TEST: 12,
VM_JS: 13,
VM_JNS: 14,
VM_JB: 15,
VM_JBE: 16,
VM_JA: 17,
VM_JAE: 18,
VM_PUSH: 19,
VM_POP: 20,
VM_CALL: 21,
VM_RET: 22,
VM_NOT: 23,
VM_SHL: 24,
VM_SHR: 25,
VM_SAR: 26,
VM_NEG: 27,
VM_PUSHA: 28,
VM_POPA: 29,
VM_PUSHF: 30,
VM_POPF: 31,
VM_MOVZX: 32,
VM_MOVSX: 33,
VM_XCHG: 34,
VM_MUL: 35,
VM_DIV: 36,
VM_ADC: 37,
VM_SBB: 38,
VM_PRINT: 39,
/*
#ifdef VM_OPTIMIZE
VM_MOVB, VM_MOVD, VM_CMPB, VM_CMPD,
VM_ADDB, VM_ADDD, VM_SUBB, VM_SUBD, VM_INCB, VM_INCD, VM_DECB, VM_DECD,
VM_NEGB, VM_NEGD,
#endif
*/
// TODO: This enum value would be much larger if VM_OPTIMIZE.
VM_STANDARD: 40,
};
/**
*/
var VM_StandardFilters = {
VMSF_NONE: 0,
VMSF_E8: 1,
VMSF_E8E9: 2,
VMSF_ITANIUM: 3,
VMSF_RGB: 4,
VMSF_AUDIO: 5,
VMSF_DELTA: 6,
VMSF_UPCASE: 7,
};
/**
*/
var VM_Flags = {
VM_FC: 1,
VM_FZ: 2,
VM_FS: 0x80000000,
};
/**
*/
var VM_OpType = {
VM_OPREG: 0,
VM_OPINT: 1,
VM_OPREGMEM: 2,
VM_OPNONE: 3,
};
/**
* Finds the key that maps to a given value in an object. This function is useful in debugging
* variables that use the above enums.
* @param {Object} obj
* @param {number} val
* @return {string} The key/enum value as a string.
*/
function findKeyForValue(obj, val) {
for (var key in obj) {
if (obj[key] === val) {
return key;
}
}
return null;
}
function getDebugString(obj, val) {
var s = 'Unknown.';
if (obj === VM_Commands) {
s = 'VM_Commands.';
} else if (obj === VM_StandardFilters) {
s = 'VM_StandardFilters.';
} else if (obj === VM_Flags) {
s = 'VM_OpType.';
} else if (obj === VM_OpType) {
s = 'VM_OpType.';
}
return s + findKeyForValue(obj, val);
}
/**
* @struct
* @constructor
*/
var VM_PreparedOperand = function() {
/** @type {VM_OpType} */
this.Type;
/** @type {number} */
this.Data = 0;
/** @type {number} */
this.Base = 0;
// TODO: In C++ this is a uint*
/** @type {Array<number>} */
this.Addr = null;
};
/** @return {string} */
VM_PreparedOperand.prototype.toString = function() {
if (this.Type === null) {
return 'Error: Type was null in VM_PreparedOperand';
}
return '{ ' +
'Type: ' + getDebugString(VM_OpType, this.Type) +
', Data: ' + this.Data +
', Base: ' + this.Base +
' }';
};
/**
* @struct
* @constructor
*/
var VM_PreparedCommand = function() {
/** @type {VM_Commands} */
this.OpCode;
/** @type {boolean} */
this.ByteMode = false;
/** @type {VM_PreparedOperand} */
this.Op1 = new VM_PreparedOperand();
/** @type {VM_PreparedOperand} */
this.Op2 = new VM_PreparedOperand();
};
/** @return {string} */
VM_PreparedCommand.prototype.toString = function(indent) {
if (this.OpCode === null) {
return 'Error: OpCode was null in VM_PreparedCommand';
}
indent = indent || '';
return indent + '{\n' +
indent + ' OpCode: ' + getDebugString(VM_Commands, this.OpCode) + ',\n' +
indent + ' ByteMode: ' + this.ByteMode + ',\n' +
indent + ' Op1: ' + this.Op1.toString() + ',\n' +
indent + ' Op2: ' + this.Op2.toString() + ',\n' +
indent + '}';
};
/**
* @struct
* @constructor
*/
var VM_PreparedProgram = function() {
/** @type {Array<VM_PreparedCommand>} */
this.Cmd = [];
/** @type {Array<VM_PreparedCommand>} */
this.AltCmd = null;
/** @type {Uint8Array} */
this.GlobalData = new Uint8Array();
/** @type {Uint8Array} */
this.StaticData = new Uint8Array(); // static data contained in DB operators
/** @type {Uint32Array} */
this.InitR = new Uint32Array(7);
/**
* A pointer to bytes that have been filtered by a program.
* @type {Uint8Array}
*/
this.FilteredData = null;
};
/** @return {string} */
VM_PreparedProgram.prototype.toString = function() {
var s = '{\n Cmd: [\n';
for (var i = 0; i < this.Cmd.length; ++i) {
s += this.Cmd[i].toString(' ') + ',\n';
}
s += '],\n';
// TODO: Dump GlobalData, StaticData, InitR?
s += ' }\n';
return s;
};
/**
* @struct
* @constructor
*/
var UnpackFilter = function() {
/** @type {number} */
this.BlockStart = 0;
/** @type {number} */
this.BlockLength = 0;
/** @type {number} */
this.ExecCount = 0;
/** @type {boolean} */
this.NextWindow = false;
// position of parent filter in Filters array used as prototype for filter
// in PrgStack array. Not defined for filters in Filters array.
/** @type {number} */
this.ParentFilter = null;
/** @type {VM_PreparedProgram} */
this.Prg = new VM_PreparedProgram();
};
var VMCF_OP0 = 0;
var VMCF_OP1 = 1;
var VMCF_OP2 = 2;
var VMCF_OPMASK = 3;
var VMCF_BYTEMODE = 4;
var VMCF_JUMP = 8;
var VMCF_PROC = 16;
var VMCF_USEFLAGS = 32;
var VMCF_CHFLAGS = 64;
var VM_CmdFlags = [
/* VM_MOV */
VMCF_OP2 | VMCF_BYTEMODE,
/* VM_CMP */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_ADD */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_SUB */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_JZ */
VMCF_OP1 | VMCF_JUMP | VMCF_USEFLAGS,
/* VM_JNZ */
VMCF_OP1 | VMCF_JUMP | VMCF_USEFLAGS,
/* VM_INC */
VMCF_OP1 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_DEC */
VMCF_OP1 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_JMP */
VMCF_OP1 | VMCF_JUMP,
/* VM_XOR */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_AND */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_OR */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_TEST */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_JS */
VMCF_OP1 | VMCF_JUMP | VMCF_USEFLAGS,
/* VM_JNS */
VMCF_OP1 | VMCF_JUMP | VMCF_USEFLAGS,
/* VM_JB */
VMCF_OP1 | VMCF_JUMP | VMCF_USEFLAGS,
/* VM_JBE */
VMCF_OP1 | VMCF_JUMP | VMCF_USEFLAGS,
/* VM_JA */
VMCF_OP1 | VMCF_JUMP | VMCF_USEFLAGS,
/* VM_JAE */
VMCF_OP1 | VMCF_JUMP | VMCF_USEFLAGS,
/* VM_PUSH */
VMCF_OP1,
/* VM_POP */
VMCF_OP1,
/* VM_CALL */
VMCF_OP1 | VMCF_PROC,
/* VM_RET */
VMCF_OP0 | VMCF_PROC,
/* VM_NOT */
VMCF_OP1 | VMCF_BYTEMODE,
/* VM_SHL */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_SHR */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_SAR */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_NEG */
VMCF_OP1 | VMCF_BYTEMODE | VMCF_CHFLAGS,
/* VM_PUSHA */
VMCF_OP0,
/* VM_POPA */
VMCF_OP0,
/* VM_PUSHF */
VMCF_OP0 | VMCF_USEFLAGS,
/* VM_POPF */
VMCF_OP0 | VMCF_CHFLAGS,
/* VM_MOVZX */
VMCF_OP2,
/* VM_MOVSX */
VMCF_OP2,
/* VM_XCHG */
VMCF_OP2 | VMCF_BYTEMODE,
/* VM_MUL */
VMCF_OP2 | VMCF_BYTEMODE,
/* VM_DIV */
VMCF_OP2 | VMCF_BYTEMODE,
/* VM_ADC */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_USEFLAGS | VMCF_CHFLAGS,
/* VM_SBB */
VMCF_OP2 | VMCF_BYTEMODE | VMCF_USEFLAGS | VMCF_CHFLAGS,
/* VM_PRINT */
VMCF_OP0,
];
/**
* @param {number} length
* @param {number} crc
* @param {VM_StandardFilters} type
* @struct
* @constructor
*/
var StandardFilterSignature = function(length, crc, type) {
/** @type {number} */
this.Length = length;
/** @type {number} */
this.CRC = crc;
/** @type {VM_StandardFilters} */
this.Type = type;
};
/**
* @type {Array<StandardFilterSignature>}
*/
var StdList = [
new StandardFilterSignature(53, 0xad576887, VM_StandardFilters.VMSF_E8),
new StandardFilterSignature(57, 0x3cd7e57e, VM_StandardFilters.VMSF_E8E9),
new StandardFilterSignature(120, 0x3769893f, VM_StandardFilters.VMSF_ITANIUM),
new StandardFilterSignature(29, 0x0e06077d, VM_StandardFilters.VMSF_DELTA),
new StandardFilterSignature(149, 0x1c2c5dc8, VM_StandardFilters.VMSF_RGB),
new StandardFilterSignature(216, 0xbc85e701, VM_StandardFilters.VMSF_AUDIO),
new StandardFilterSignature(40, 0x46b9c560, VM_StandardFilters.VMSF_UPCASE),
];
/**
* @constructor
*/
var RarVM = function() {
/** @private {Uint8Array} */
this.mem_ = null;
/** @private {Uint32Array<number>} */
this.R_ = new Uint32Array(8);
/** @private {number} */
this.flags_ = 0;
};
/**
* Initializes the memory of the VM.
*/
RarVM.prototype.init = function() {
if (!this.mem_) {
this.mem_ = new Uint8Array(VM_MEMSIZE);
}
};
/**
* @param {Uint8Array} code
* @return {VM_StandardFilters}
*/
RarVM.prototype.isStandardFilter = function(code) {
var codeCRC = (CRC(0xffffffff, code, code.length) ^ 0xffffffff) >>> 0;
for (var i = 0; i < StdList.length; ++i) {
if (StdList[i].CRC == codeCRC && StdList[i].Length == code.length)
return StdList[i].Type;
}
return VM_StandardFilters.VMSF_NONE;
};
/**
* @param {VM_PreparedOperand} op
* @param {boolean} byteMode
* @param {bitjs.io.BitStream} bstream A rtl bit stream.
*/
RarVM.prototype.decodeArg = function(op, byteMode, bstream) {
var data = bstream.peekBits(16);
if (data & 0x8000) {
op.Type = VM_OpType.VM_OPREG; // Operand is register (R[0]..R[7])
bstream.readBits(1); // 1 flag bit and...
op.Data = bstream.readBits(3); // ... 3 register number bits
op.Addr = [this.R_[op.Data]] // TODO &R[Op.Data] // Register address
} else {
if ((data & 0xc000) == 0) {
op.Type = VM_OpType.VM_OPINT; // Operand is integer
bstream.readBits(2); // 2 flag bits
if (byteMode) {
op.Data = bstream.readBits(8); // Byte integer.
} else {
op.Data = RarVM.readData(bstream); // 32 bit integer.
}
} else {
// Operand is data addressed by register data, base address or both.
op.Type = VM_OpType.VM_OPREGMEM;
if ((data & 0x2000) == 0) {
bstream.readBits(3); // 3 flag bits
// Base address is zero, just use the address from register.
op.Data = bstream.readBits(3); // (Data>>10)&7
op.Addr = [this.R_[op.Data]]; // TODO &R[op.Data]
op.Base = 0;
} else {
bstream.readBits(4); // 4 flag bits
if ((data & 0x1000) == 0) {
// Use both register and base address.
op.Data = bstream.readBits(3);
op.Addr = [this.R_[op.Data]]; // TODO &R[op.Data]
} else {
// Use base address only. Access memory by fixed address.
op.Data = 0;
}
op.Base = RarVM.readData(bstream); // Read base address.
}
}
}
};
/**
* @param {VM_PreparedProgram} prg
*/
RarVM.prototype.execute = function(prg) {
this.R_.set(prg.InitR);
var globalSize = Math.min(prg.GlobalData.length, VM_GLOBALMEMSIZE);
if (globalSize) {
this.mem_.set(prg.GlobalData.subarray(0, globalSize), VM_GLOBALMEMADDR);
}
var staticSize = Math.min(prg.StaticData.length, VM_GLOBALMEMSIZE - globalSize);
if (staticSize) {
this.mem_.set(prg.StaticData.subarray(0, staticSize), VM_GLOBALMEMADDR + globalSize);
}
this.R_[7] = VM_MEMSIZE;
this.flags_ = 0;
var preparedCodes = prg.AltCmd ? prg.AltCmd : prg.Cmd;
if (prg.Cmd.length > 0 && !this.executeCode(preparedCodes)) {
// Invalid VM program. Let's replace it with 'return' command.
preparedCode.OpCode = VM_Commands.VM_RET;
}
var dataView = new DataView(this.mem_.buffer, VM_GLOBALMEMADDR);
var newBlockPos = dataView.getUint32(0x20, true /* little endian */ ) & VM_MEMMASK;
var newBlockSize = dataView.getUint32(0x1c, true /* little endian */ ) & VM_MEMMASK;
if (newBlockPos + newBlockSize >= VM_MEMSIZE) {
newBlockPos = newBlockSize = 0;
}
prg.FilteredData = this.mem_.subarray(newBlockPos, newBlockPos + newBlockSize);
prg.GlobalData = new Uint8Array(0);
var dataSize = Math.min(dataView.getUint32(0x30),
(VM_GLOBALMEMSIZE - VM_FIXEDGLOBALSIZE));
if (dataSize != 0) {
var len = dataSize + VM_FIXEDGLOBALSIZE;
prg.GlobalData = new Uint8Array(len);
prg.GlobalData.set(mem.subarray(VM_GLOBALMEMADDR, VM_GLOBALMEMADDR + len));
}
};
/**
* @param {Array<VM_PreparedCommand>} preparedCodes
* @return {boolean}
*/
RarVM.prototype.executeCode = function(preparedCodes) {
var codeIndex = 0;
var cmd = preparedCodes[codeIndex];
// TODO: Why is this an infinite loop instead of just returning
// when a VM_RET is hit?
while (1) {
switch (cmd.OpCode) {
case VM_Commands.VM_RET:
if (this.R_[7] >= VM_MEMSIZE) {
return true;
}
//SET_IP(GET_VALUE(false,(uint *)&Mem[R[7] & VM_MEMMASK]));
this.R_[7] += 4;
continue;
case VM_Commands.VM_STANDARD:
this.executeStandardFilter(cmd.Op1.Data);
break;
default:
console.error('RarVM OpCode not supported: ' + getDebugString(VM_Commands, cmd.OpCode));
break;
} // switch (cmd.OpCode)
codeIndex++;
cmd = preparedCodes[codeIndex];
}
};
/**
* @param {number} filterType
*/
RarVM.prototype.executeStandardFilter = function(filterType) {
switch (filterType) {
case VM_StandardFilters.VMSF_DELTA:
var dataSize = this.R_[4];
var channels = this.R_[0];
var srcPos = 0;
var border = dataSize * 2;
//SET_VALUE(false,&Mem[VM_GLOBALMEMADDR+0x20],DataSize);
var dataView = new DataView(this.mem_.buffer, VM_GLOBALMEMADDR);
dataView.setUint32(0x20, dataSize, true /* little endian */ );
if (dataSize >= VM_GLOBALMEMADDR / 2) {
break;
}
// Bytes from same channels are grouped to continual data blocks,
// so we need to place them back to their interleaving positions.
for (var curChannel = 0; curChannel < channels; ++curChannel) {
var prevByte = 0;
for (var destPos = dataSize + curChannel; destPos < border; destPos += channels) {
prevByte = (prevByte - this.mem_[srcPos++]) & 0xff;
this.mem_[destPos] = prevByte;
}
}
break;
default:
console.error('RarVM Standard Filter not supported: ' + getDebugString(VM_StandardFilters, filterType));
break;
}
};
/**
* @param {Uint8Array} code
* @param {VM_PreparedProgram} prg
*/
RarVM.prototype.prepare = function(code, prg) {
var codeSize = code.length;
//InitBitInput();
//memcpy(InBuf,Code,Min(CodeSize,BitInput::MAX_SIZE));
var bstream = new bitjs.io.BitStream(code.buffer, true /* rtl */ );
// Calculate the single byte XOR checksum to check validity of VM code.
var xorSum = 0;
for (var i = 1; i < codeSize; ++i) {
xorSum ^= code[i];
}
bstream.readBits(8);
prg.Cmd = []; // TODO: Is this right? I don't see it being done in rarvm.cpp.
// VM code is valid if equal.
if (xorSum == code[0]) {
var filterType = this.isStandardFilter(code);
if (filterType != VM_StandardFilters.VMSF_NONE) {
// VM code is found among standard filters.
var curCmd = new VM_PreparedCommand();
prg.Cmd.push(curCmd);
curCmd.OpCode = VM_Commands.VM_STANDARD;
curCmd.Op1.Data = filterType;
// TODO: Addr=&CurCmd->Op1.Data
curCmd.Op1.Addr = [curCmd.Op1.Data];
curCmd.Op2.Addr = [null]; // &CurCmd->Op2.Data;
curCmd.Op1.Type = VM_OpType.VM_OPNONE;
curCmd.Op2.Type = VM_OpType.VM_OPNONE;
codeSize = 0;
}
var dataFlag = bstream.readBits(1);
// Read static data contained in DB operators. This data cannot be
// changed, it is a part of VM code, not a filter parameter.
if (dataFlag & 0x8000) {
var dataSize = RarVM.readData(bstream) + 1;
// TODO: This accesses the byte pointer of the bstream directly. Is that ok?
for (var i = 0; i < bstream.bytePtr < codeSize && i < dataSize; ++i) {
// Append a byte to the program's static data.
var newStaticData = new Uint8Array(prg.StaticData.length + 1);
newStaticData.set(prg.StaticData);
newStaticData[newStaticData.length - 1] = bstream.readBits(8);
prg.StaticData = newStaticData;
}
}
while (bstream.bytePtr < codeSize) {
var curCmd = new VM_PreparedCommand();
prg.Cmd.push(curCmd); // Prg->Cmd.Add(1)
var flag = bstream.peekBits(1);
if (!flag) { // (Data&0x8000)==0
curCmd.OpCode = bstream.readBits(4);
} else {
curCmd.OpCode = (bstream.readBits(6) - 24);
}
if (VM_CmdFlags[curCmd.OpCode] & VMCF_BYTEMODE) {
curCmd.ByteMode = (bstream.readBits(1) != 0);
} else {
curCmd.ByteMode = 0;
}
curCmd.Op1.Type = VM_OpType.VM_OPNONE;
curCmd.Op2.Type = VM_OpType.VM_OPNONE;
var opNum = (VM_CmdFlags[curCmd.OpCode] & VMCF_OPMASK);
curCmd.Op1.Addr = null;
curCmd.Op2.Addr = null;
if (opNum > 0) {
this.decodeArg(curCmd.Op1, curCmd.ByteMode, bstream); // reading the first operand
if (opNum == 2) {
this.decodeArg(curCmd.Op2, curCmd.ByteMode, bstream); // reading the second operand
} else {
if (curCmd.Op1.Type == VM_OpType.VM_OPINT && (VM_CmdFlags[curCmd.OpCode] & (VMCF_JUMP | VMCF_PROC))) {
// Calculating jump distance.
var distance = curCmd.Op1.Data;
if (distance >= 256) {
distance -= 256;
} else {
if (distance >= 136) {
distance -= 264;
} else {
if (distance >= 16) {
distance -= 8;
} else {
if (distance >= 8) {
distance -= 16;
}
}
}
distance += prg.Cmd.length;
}
curCmd.Op1.Data = distance;
}
}
} // if (OpNum>0)
} // while ((uint)InAddr<CodeSize)
} // if (XorSum==Code[0])
var curCmd = new VM_PreparedCommand();
prg.Cmd.push(curCmd);
curCmd.OpCode = VM_Commands.VM_RET;
// TODO: Addr=&CurCmd->Op1.Data
curCmd.Op1.Addr = [curCmd.Op1.Data];
curCmd.Op2.Addr = [curCmd.Op2.Data];
curCmd.Op1.Type = VM_OpType.VM_OPNONE;
curCmd.Op2.Type = VM_OpType.VM_OPNONE;
// If operand 'Addr' field has not been set by DecodeArg calls above,
// let's set it to point to operand 'Data' field. It is necessary for
// VM_OPINT type operands (usual integers) or maybe if something was
// not set properly for other operands. 'Addr' field is required
// for quicker addressing of operand data.
for (var i = 0; i < prg.Cmd.length; ++i) {
var cmd = prg.Cmd[i];
if (cmd.Op1.Addr == null) {
cmd.Op1.Addr = [cmd.Op1.Data];
}
if (cmd.Op2.Addr == null) {
cmd.Op2.Addr = [cmd.Op2.Data];
}
}
/*
#ifdef VM_OPTIMIZE
if (CodeSize!=0)
Optimize(Prg);
#endif
*/
};
/**
* @param {Uint8Array} arr The byte array to set a value in.
* @param {number} value The unsigned 32-bit value to set.
* @param {number} offset Offset into arr to start setting the value, defaults to 0.
*/
RarVM.prototype.setLowEndianValue = function(arr, value, offset) {
var i = offset || 0;
arr[i] = value & 0xff;
arr[i + 1] = (value >>> 8) & 0xff;
arr[i + 2] = (value >>> 16) & 0xff;
arr[i + 3] = (value >>> 24) & 0xff;
};
/**
* Sets a number of bytes of the VM memory at the given position from a
* source buffer of bytes.
* @param {number} pos The position in the VM memory to start writing to.
* @param {Uint8Array} buffer The source buffer of bytes.
* @param {number} dataSize The number of bytes to set.
*/
RarVM.prototype.setMemory = function(pos, buffer, dataSize) {
if (pos < VM_MEMSIZE) {
var numBytes = Math.min(dataSize, VM_MEMSIZE - pos);
for (var i = 0; i < numBytes; ++i) {
this.mem_[pos + i] = buffer[i];
}
}
};
/**
* Static function that reads in the next set of bits for the VM
* (might return 4, 8, 16 or 32 bits).
* @param {bitjs.io.BitStream} bstream A RTL bit stream.
* @return {number} The value of the bits read.
*/
RarVM.readData = function(bstream) {
// Read in the first 2 bits.
var flags = bstream.readBits(2);
switch (flags) { // Data&0xc000
// Return the next 4 bits.
case 0:
return bstream.readBits(4); // (Data>>10)&0xf
case 1: // 0x4000
// 0x3c00 => 0011 1100 0000 0000
if (bstream.peekBits(4) == 0) { // (Data&0x3c00)==0
// Skip the 4 zero bits.
bstream.readBits(4);
// Read in the next 8 and pad with 1s to 32 bits.
return (0xffffff00 | bstream.readBits(8)) >>> 0; // ((Data>>2)&0xff)
}
// Else, read in the next 8.
return bstream.readBits(8);
// Read in the next 16.
case 2: // 0x8000
var val = bstream.getBits();
bstream.readBits(16);
return val; //bstream.readBits(16);
// case 3
default:
return (bstream.readBits(16) << 16) | bstream.readBits(16);
}
};
// ============================================================================================== //

692
cps/static/js/unrar.js → cps/static/js/archive/unrar.js
View File

@ -1,6 +1,8 @@
/**
* unrar.js
*
* Licensed under the MIT License
*
* Copyright(c) 2011 Google Inc.
* Copyright(c) 2011 antimatter15
*
@ -11,8 +13,10 @@
/* global bitjs, importScripts */
// This file expects to be invoked as a Worker (see onmessage below).
importScripts("io.js");
importScripts("archive.js");
importScripts('../io/bitstream.js');
importScripts('../io/bytebuffer.js');
importScripts('archive.js');
importScripts('rarvm.js');
// Progress variables.
var currentFilename = "";
@ -59,11 +63,15 @@ var MAIN_HEAD = 0x73,
// PROTECT_HEAD = 0x78,
// SIGN_HEAD = 0x79,
// NEWSUB_HEAD = 0x7a,
ENDARC_HEAD = 0x7b;
ENDARC_HEAD = 0x7b;
// bstream is a bit stream
// ============================================================================================== //
/**
* @param {bitjs.io.BitStream} bstream
* @constructor
*/
var RarVolumeHeader = function(bstream) {
var headPos = bstream.bytePtr;
// byte 1,2
info("Rar Volume Header @" + bstream.bytePtr);
@ -197,15 +205,18 @@ var RarVolumeHeader = function(bstream) {
}
while (headPos + this.headSize > bstream.bytePtr) bstream.readBits(1);
while (headPos + this.headSize > bstream.bytePtr) {
bstream.readBits(1);
}
info("Found FILE_HEAD with packSize=" + this.packSize + ", unpackedSize= " + this.unpackedSize + ", hostOS=" + this.hostOS + ", unpVer=" + this.unpVer + ", method=" + this.method + ", filename=" + this.filename);
// If Info line is commented in firefox fails if server on same computer than browser with error "expected expression, got default"
//info("Found FILE_HEAD with packSize=" + this.packSize + ", unpackedSize= " + this.unpackedSize + ", hostOS=" + this.hostOS + ", unpVer=" + this.unpVer + ", method=" + this.method + ", filename=" + this.filename);
break;
default:
info("Found a header of type 0x" + byteValueToHexString(this.headType));
// skip the rest of the header bytes (for now)
bstream.readBytes( this.headSize - 7 );
bstream.readBytes(this.headSize - 7);
break;
}
};
@ -213,20 +224,22 @@ var RarVolumeHeader = function(bstream) {
//var BLOCK_LZ = 0;
var rLDecode = [0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224],
rLBits = [0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5],
rLBits = [0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5],
rDBitLengthCounts = [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 14, 0, 12],
rSDDecode = [0, 4, 8, 16, 32, 64, 128, 192],
rSDBits = [2, 2, 3, 4, 5, 6, 6, 6];
rSDBits = [2, 2, 3, 4, 5, 6, 6, 6];
var rDDecode = [0, 1, 2, 3, 4, 6, 8, 12, 16, 24, 32,
48, 64, 96, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048, 3072,
4096, 6144, 8192, 12288, 16384, 24576, 32768, 49152, 65536, 98304,
131072, 196608, 262144, 327680, 393216, 458752, 524288, 589824,
655360, 720896, 786432, 851968, 917504, 983040];
655360, 720896, 786432, 851968, 917504, 983040
];
var rDBits = [0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5,
5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14,
15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16];
15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16
];
var rLowDistRepCount = 16;
@ -266,15 +279,45 @@ var RD = { //rep decode
DecodeNum: new Array(rRC)
};
/**
* @type {Array<bitjs.io.ByteBuffer>}
*/
var rOldBuffers = [];
/**
* The current buffer we are unpacking to.
* @type {bitjs.io.ByteBuffer}
*/
var rBuffer;
// read in Huffman tables for RAR
/**
* The buffer of the final bytes after filtering (only used in Unpack29).
* @type {bitjs.io.ByteBuffer}
*/
var wBuffer;
/**
* In unpack.cpp, UnpPtr keeps track of what bytes have been unpacked
* into the Window buffer and WrPtr keeps track of what bytes have been
* actually written to disk after the unpacking and optional filtering
* has been done.
*
* In our case, rBuffer is the buffer for the unpacked bytes and wBuffer is
* the final output bytes.
*/
/**
* Read in Huffman tables for RAR
* @param {bitjs.io.BitStream} bstream
*/
function rarReadTables(bstream) {
var BitLength = new Array(rBC),
Table = new Array(rHuffTableSize);
var BitLength = new Array(rBC);
var Table = new Array(rHuffTableSize);
var i;
// before we start anything we need to get byte-aligned
bstream.readBits( (8 - bstream.bitPtr) & 0x7 );
bstream.readBits((8 - bstream.bitPtr) & 0x7);
if (bstream.readBits(1)) {
info("Error! PPM not implemented yet");
@ -282,12 +325,13 @@ function rarReadTables(bstream) {
}
if (!bstream.readBits(1)) { //discard old table
for (i = UnpOldTable.length; i--;) UnpOldTable[i] = 0;
for (i = UnpOldTable.length; i--;) {
UnpOldTable[i] = 0;
}
}
// read in bit lengths
for (var I = 0; I < rBC; ++I) {
var Length = bstream.readBits(4);
if (Length === 15) {
var ZeroCount = bstream.readBits(4);
@ -346,24 +390,26 @@ function rarReadTables(bstream) {
function rarDecodeNumber(bstream, dec) {
var DecodeLen = dec.DecodeLen, DecodePos = dec.DecodePos, DecodeNum = dec.DecodeNum;
var DecodeLen = dec.DecodeLen,
DecodePos = dec.DecodePos,
DecodeNum = dec.DecodeNum;
var bitField = bstream.getBits() & 0xfffe;
//some sort of rolled out binary search
var bits = ((bitField < DecodeLen[8]) ?
((bitField < DecodeLen[4]) ?
((bitField < DecodeLen[2]) ?
((bitField < DecodeLen[1]) ? 1 : 2)
: ((bitField < DecodeLen[3]) ? 3 : 4))
: (bitField < DecodeLen[6]) ?
((bitField < DecodeLen[5]) ? 5 : 6)
: ((bitField < DecodeLen[7]) ? 7 : 8))
: ((bitField < DecodeLen[12]) ?
((bitField < DecodeLen[1]) ? 1 : 2) :
((bitField < DecodeLen[3]) ? 3 : 4)) :
(bitField < DecodeLen[6]) ?
((bitField < DecodeLen[5]) ? 5 : 6) :
((bitField < DecodeLen[7]) ? 7 : 8)) :
((bitField < DecodeLen[12]) ?
((bitField < DecodeLen[10]) ?
((bitField < DecodeLen[9]) ? 9 : 10)
: ((bitField < DecodeLen[11]) ? 11 : 12))
: (bitField < DecodeLen[14]) ?
((bitField < DecodeLen[13]) ? 13 : 14)
: 15));
((bitField < DecodeLen[9]) ? 9 : 10) :
((bitField < DecodeLen[11]) ? 11 : 12)) :
(bitField < DecodeLen[14]) ?
((bitField < DecodeLen[13]) ? 13 : 14) :
15));
bstream.readBits(bits);
var N = DecodePos[bits] + ((bitField - DecodeLen[bits - 1]) >>> (16 - bits));
@ -372,12 +418,17 @@ function rarDecodeNumber(bstream, dec) {
function rarMakeDecodeTables(BitLength, offset, dec, size) {
var DecodeLen = dec.DecodeLen, DecodePos = dec.DecodePos, DecodeNum = dec.DecodeNum;
var LenCount = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
TmpPos = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
N = 0, M = 0;
var DecodeLen = dec.DecodeLen;
var DecodePos = dec.DecodePos;
var DecodeNum = dec.DecodeNum;
var LenCount = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
var TmpPos = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
var N = 0;
var M = 0;
var i;
for (i = DecodeNum.length; i--;) DecodeNum[i] = 0;
for (i = DecodeNum.length; i--;) {
DecodeNum[i] = 0;
}
for (i = 0; i < size; i++) {
LenCount[BitLength[i + offset] & 0xF]++;
}
@ -398,25 +449,28 @@ function rarMakeDecodeTables(BitLength, offset, dec, size) {
TmpPos[I] = DecodePos[I];
}
for (I = 0; I < size; ++I) {
if (BitLength[I + offset] !== 0) {
DecodeNum[ TmpPos[ BitLength[offset + I] & 0xF ]++] = I;
if (BitLength[I + offset] != 0) {
DecodeNum[TmpPos[BitLength[offset + I] & 0xF]++] = I;
}
}
}
// TODO: implement
function Unpack15() { //bstream, Solid) {
/**
* @param {bitjs.io.BitStream} bstream
* @param {boolean} Solid
*/
function unpack15() { //bstream, Solid) {
info("ERROR! RAR 1.5 compression not supported");
}
var lowDistRepCount = 0, prevLowDist = 0;
var rOldDist = [0, 0, 0, 0];
var lastDist = 0;
var lastLength = 0;
function Unpack20(bstream) { //, Solid) {
/**
* Unpacks the bit stream into rBuffer using the Unpack20 algorithm.
* @param {bitjs.io.BitStream} bstream
* @param {boolean} Solid
*/
function unpack20(bstream) { //, Solid) {
var destUnpSize = rBuffer.data.length;
var oldDistPtr = 0;
var Length;
@ -441,7 +495,9 @@ function Unpack20(bstream) { //, Solid) {
}
if (Distance >= 0x2000) {
Length++;
if (Distance >= 0x40000) Length++;
if (Distance >= 0x40000) {
Length++;
}
}
lastLength = Length;
lastDist = rOldDist[oldDistPtr++ & 3] = Distance;
@ -450,9 +506,7 @@ function Unpack20(bstream) { //, Solid) {
}
if (num === 269) {
rarReadTables20(bstream);
rarUpdateProgress();
continue;
}
if (num === 256) {
@ -470,8 +524,10 @@ function Unpack20(bstream) { //, Solid) {
if (Distance >= 0x101) {
Length++;
if (Distance >= 0x2000) {
Length++;
if (Distance >= 0x40000) Length++;
Length++
if (Distance >= 0x40000) {
Length++;
}
}
}
lastLength = Length;
@ -500,7 +556,6 @@ function rarUpdateProgress() {
postProgress();
}
var rNC20 = 298,
rDC20 = 48,
rRC20 = 28,
@ -516,7 +571,9 @@ function rarReadTables20(bstream) {
var i;
bstream.readBits(1);
if (!bstream.readBits(1)) {
for (i = UnpOldTable20.length; i--;) UnpOldTable20[i] = 0;
for (i = UnpOldTable20.length; i--;) {
UnpOldTable20[i] = 0;
}
}
TableSize = rNC20 + rDC20 + rRC20;
for (I = 0; I < rBC20; I++) {
@ -549,11 +606,254 @@ function rarReadTables20(bstream) {
rarMakeDecodeTables(Table, 0, LD, rNC20);
rarMakeDecodeTables(Table, rNC20, DD, rDC20);
rarMakeDecodeTables(Table, rNC20 + rDC20, RD, rRC20);
for (i = UnpOldTable20.length; i--;) UnpOldTable20[i] = Table[i];
for (i = UnpOldTable20.length; i--;) {
UnpOldTable20[i] = Table[i];
}
}
var lowDistRepCount = 0;
var prevLowDist = 0;
var rOldDist = [0, 0, 0, 0];
var lastDist;
var lastLength;
// ============================================================================================== //
// Unpack code specific to RarVM
var VM = new RarVM();
/**
* Filters code, one entry per filter.
* @type {Array<UnpackFilter>}
*/
var Filters = [];
/**
* Filters stack, several entrances of same filter are possible.
* @type {Array<UnpackFilter>}
*/
var PrgStack = [];
/**
* Lengths of preceding blocks, one length per filter. Used to reduce
* size required to write block length if lengths are repeating.
* @type {Array<number>}
*/
var OldFilterLengths = [];
var LastFilter = 0;
function InitFilters() {
OldFilterLengths = [];
LastFilter = 0;
Filters = [];
PrgStack = [];
}
function Unpack29(bstream) {
/**
* @param {number} firstByte The first byte (flags).
* @param {Uint8Array} vmCode An array of bytes.
*/
function rarAddVMCode(firstByte, vmCode) {
VM.init();
var bstream = new bitjs.io.BitStream(vmCode.buffer, true /* rtl */ );
var filtPos;
if (firstByte & 0x80) {
filtPos = RarVM.readData(bstream);
if (filtPos == 0) {
InitFilters();
} else {
filtPos--;
}
} else {
filtPos = LastFilter;
}
if (filtPos > Filters.length || filtPos > OldFilterLengths.length) {
return false;
}
LastFilter = filtPos;
var newFilter = (filtPos == Filters.length);
// new filter for PrgStack
var stackFilter = new UnpackFilter();
var filter = null;
// new filter code, never used before since VM reset
if (newFilter) {
// too many different filters, corrupt archive
if (filtPos > 1024) {
return false;
}
filter = new UnpackFilter();
Filters.push(filter);
stackFilter.ParentFilter = (Filters.length - 1);
OldFilterLengths.push(0); // OldFilterLengths.Add(1)
filter.ExecCount = 0;
} else { // filter was used in the past
filter = Filters[filtPos];
stackFilter.ParentFilter = filtPos;
filter.ExecCount++;
}
var emptyCount = 0;
for (var i = 0; i < PrgStack.length; ++i) {
PrgStack[i - emptyCount] = PrgStack[i];
if (PrgStack[i] == null) {
emptyCount++;
}
if (emptyCount > 0) {
PrgStack[i] = null;
}
}
if (emptyCount == 0) {
PrgStack.push(null); //PrgStack.Add(1);
emptyCount = 1;
}
var stackPos = PrgStack.length - emptyCount;
PrgStack[stackPos] = stackFilter;
stackFilter.ExecCount = filter.ExecCount;
var blockStart = RarVM.readData(bstream);
if (firstByte & 0x40) {
blockStart += 258;
}
stackFilter.BlockStart = (blockStart + rBuffer.ptr) & MAXWINMASK;
if (firstByte & 0x20) {
stackFilter.BlockLength = RarVM.readData(bstream);
} else {
stackFilter.BlockLength = filtPos < OldFilterLengths.length ?
OldFilterLengths[filtPos] :
0;
}
stackFilter.NextWindow = (wBuffer.ptr != rBuffer.ptr) &&
(((wBuffer.ptr - rBuffer.ptr) & MAXWINMASK) <= blockStart);
OldFilterLengths[filtPos] = stackFilter.BlockLength;
for (var i = 0; i < 7; ++i) {
stackFilter.Prg.InitR[i] = 0;
}
stackFilter.Prg.InitR[3] = VM_GLOBALMEMADDR;
stackFilter.Prg.InitR[4] = stackFilter.BlockLength;
stackFilter.Prg.InitR[5] = stackFilter.ExecCount;
// set registers to optional parameters if any
if (firstByte & 0x10) {
var initMask = bstream.readBits(7);
for (var i = 0; i < 7; ++i) {
if (initMask & (1 << i)) {
stackFilter.Prg.InitR[i] = RarVM.readData(bstream);
}
}
}
if (newFilter) {
var vmCodeSize = RarVM.readData(bstream);
if (vmCodeSize >= 0x10000 || vmCodeSize == 0) {
return false;
}
var vmCode = new Uint8Array(vmCodeSize);
for (var i = 0; i < vmCodeSize; ++i) {
//if (Inp.Overflow(3))
// return(false);
vmCode[i] = bstream.readBits(8);
}
VM.prepare(vmCode, filter.Prg);
}
stackFilter.Prg.Cmd = filter.Prg.Cmd;
stackFilter.Prg.AltCmd = filter.Prg.Cmd;
var staticDataSize = filter.Prg.StaticData.length;
if (staticDataSize > 0 && staticDataSize < VM_GLOBALMEMSIZE) {
// read statically defined data contained in DB commands
for (var i = 0; i < staticDataSize; ++i) {
stackFilter.Prg.StaticData[i] = filter.Prg.StaticData[i];
}
}
if (stackFilter.Prg.GlobalData.length < VM_FIXEDGLOBALSIZE) {
stackFilter.Prg.GlobalData = new Uint8Array(VM_FIXEDGLOBALSIZE);
}
var globalData = stackFilter.Prg.GlobalData;
for (var i = 0; i < 7; ++i) {
VM.setLowEndianValue(globalData, stackFilter.Prg.InitR[i], i * 4);
}
VM.setLowEndianValue(globalData, stackFilter.BlockLength, 0x1c);
VM.setLowEndianValue(globalData, 0, 0x20);
VM.setLowEndianValue(globalData, stackFilter.ExecCount, 0x2c);
for (var i = 0; i < 16; ++i) {
globalData[0x30 + i] = 0;
}
// put data block passed as parameter if any
if (firstByte & 8) {
//if (Inp.Overflow(3))
// return(false);
var dataSize = RarVM.readData(bstream);
if (dataSize > (VM_GLOBALMEMSIZE - VM_FIXEDGLOBALSIZE)) {
return (false);
}
var curSize = stackFilter.Prg.GlobalData.length;
if (curSize < dataSize + VM_FIXEDGLOBALSIZE) {
// Resize global data and update the stackFilter and local variable.
var numBytesToAdd = dataSize + VM_FIXEDGLOBALSIZE - curSize;
var newGlobalData = new Uint8Array(globalData.length + numBytesToAdd);
newGlobalData.set(globalData);
stackFilter.Prg.GlobalData = newGlobalData;
globalData = newGlobalData;
}
//byte *GlobalData=&StackFilter->Prg.GlobalData[VM_FIXEDGLOBALSIZE];
for (var i = 0; i < dataSize; ++i) {
//if (Inp.Overflow(3))
// return(false);
globalData[VM_FIXEDGLOBALSIZE + i] = bstream.readBits(8);
}
}
return true;
}
/**
* @param {!bitjs.io.BitStream} bstream
*/
function rarReadVMCode(bstream) {
var firstByte = bstream.readBits(8);
var length = (firstByte & 7) + 1;
if (length == 7) {
length = bstream.readBits(8) + 7;
} else if (length == 8) {
length = bstream.readBits(16);
}
// Read all bytes of VM code into an array.
var vmCode = new Uint8Array(length);
for (var i = 0; i < length; i++) {
// Do something here with checking readbuf.
vmCode[i] = bstream.readBits(8);
}
return RarAddVMCode(firstByte, vmCode);
}
/**
* Unpacks the bit stream into rBuffer using the Unpack29 algorithm.
* @param {bitjs.io.BitStream} bstream
* @param {boolean} Solid
*/
function unpack29(bstream) {
// lazy initialize rDDecode and rDBits
var DDecode = new Array(rDC);
@ -577,7 +877,9 @@ function Unpack29(bstream) {
lastDist = 0;
lastLength = 0;
var i;
for (i = UnpOldTable.length; i--;) UnpOldTable[i] = 0;
for (i = UnpOldTable.length; i--;) {
UnpOldTable[i] = 0;
}
// read in Huffman tables
rarReadTables(bstream);
@ -632,12 +934,15 @@ function Unpack29(bstream) {
continue;
}
if (num === 256) {
if (!rarReadEndOfBlock(bstream)) break;
if (!rarReadEndOfBlock(bstream)) {
break;
}
continue;
}
if (num === 257) {
//console.log("READVMCODE");
if (!rarReadVMCode(bstream)) break;
if (!rarReadVMCode(bstream)) {
break;
}
continue;
}
if (num === 258) {
@ -674,15 +979,193 @@ function Unpack29(bstream) {
rarCopyString(2, Distance);
continue;
}
}
} // while (true)
rarUpdateProgress();
rarWriteBuf();
}
/**
* Does stuff to the current byte buffer (rBuffer) based on
* the filters loaded into the RarVM and writes out to wBuffer.
*/
function rarWriteBuf() {
var writeSize = (rBuffer.ptr & MAXWINMASK);
for (var i = 0; i < PrgStack.length; ++i) {
var flt = PrgStack[i];
if (flt == null) {
continue;
}
if (flt.NextWindow) {
flt.NextWindow = false;
continue;
}
var blockStart = flt.BlockStart;
var blockLength = flt.BlockLength;
// WrittenBorder = wBuffer.ptr
if (((blockStart - wBuffer.ptr) & MAXWINMASK) < writeSize) {
if (wBuffer.ptr != blockStart) {
// Copy blockStart bytes from rBuffer into wBuffer.
rarWriteArea(wBuffer.ptr, blockStart);
writeSize = (rBuffer.ptr - wBuffer.ptr) & MAXWINMASK;
}
if (blockLength <= writeSize) {
var blockEnd = (blockStart + blockLength) & MAXWINMASK;
if (blockStart < blockEnd || blockEnd == 0) {
VM.setMemory(0, rBuffer.data.subarray(blockStart, blockStart + blockLength), blockLength);
} else {
var firstPartLength = MAXWINSIZE - blockStart;
VM.setMemory(0, rBuffer.data.subarray(blockStart, blockStart + firstPartLength), firstPartLength);
VM.setMemory(firstPartLength, rBuffer.data, blockEnd);
}
var parentPrg = Filters[flt.ParentFilter].Prg;
var prg = flt.Prg;
if (parentPrg.GlobalData.length > VM_FIXEDGLOBALSIZE) {
// Copy global data from previous script execution if any.
prg.GlobalData = new Uint8Array(parentPrg.GlobalData);
}
rarExecuteCode(prg);
if (prg.GlobalData.length > VM_FIXEDGLOBALSIZE) {
// Save global data for next script execution.
var globalDataLen = prg.GlobalData.length;
if (parentPrg.GlobalData.length < globalDataLen) {
parentPrg.GlobalData = new Uint8Array(globalDataLen);
}
parentPrg.GlobalData.set(
this.mem_.subarray(VM_FIXEDGLOBALSIZE, VM_FIXEDGLOBALSIZE + globalDataLen),
VM_FIXEDGLOBALSIZE);
} else {
parentPrg.GlobalData = new Uint8Array(0);
}
var filteredData = prg.FilteredData;
PrgStack[i] = null;
while (i + 1 < PrgStack.length) {
var nextFilter = PrgStack[i + 1];
if (nextFilter == null || nextFilter.BlockStart != blockStart ||
nextFilter.BlockLength != filteredData.length || nextFilter.NextWindow) {
break;
}
// Apply several filters to same data block.
VM.setMemory(0, filteredData, filteredData.length);
var parentPrg = Filters[nextFilter.ParentFilter].Prg;
var nextPrg = nextFilter.Prg;
var globalDataLen = parentPrg.GlobalData.length;
if (globalDataLen > VM_FIXEDGLOBALSIZE) {
// Copy global data from previous script execution if any.
nextPrg.GlobalData = new Uint8Array(globalDataLen);
nextPrg.GlobalData.set(parentPrg.GlobalData.subarray(VM_FIXEDGLOBALSIZE, VM_FIXEDGLOBALSIZE + globalDataLen), VM_FIXEDGLOBALSIZE);
}
rarExecuteCode(nextPrg);
if (nextPrg.GlobalData.length > VM_GLOBALMEMSIZE) {
// Save global data for next script execution.
var globalDataLen = nextPrg.GlobalData.length;
if (parentPrg.GlobalData.length < globalDataLen) {
parentPrg.GlobalData = new Uint8Array(globalDataLen);
}
parentPrg.GlobalData.set(
this.mem_.subarray(VM_FIXEDGLOBALSIZE, VM_FIXEDGLOBALSIZE + globalDataLen),
VM_FIXEDGLOBALSIZE);
} else {
parentPrg.GlobalData = new Uint8Array(0);
}
filteredData = nextPrg.FilteredData;
i++;
PrgStack[i] = null;
} // while (i + 1 < PrgStack.length)
for (var j = 0; j < filteredData.length; ++j) {
wBuffer.insertByte(filteredData[j]);
}
writeSize = (rBuffer.ptr - wBuffer.ptr) & MAXWINMASK;
} // if (blockLength <= writeSize)
else {
for (var j = i; j < PrgStack.length; ++j) {
var flt = PrgStack[j];
if (flt != null && flt.NextWindow) {
flt.NextWindow = false;
}
}
//WrPtr=WrittenBorder;
return;
}
} // if (((blockStart - wBuffer.ptr) & MAXWINMASK) < writeSize)
} // for (var i = 0; i < PrgStack.length; ++i)
// Write any remaining bytes from rBuffer to wBuffer;
rarWriteArea(wBuffer.ptr, rBuffer.ptr);
// Now that the filtered buffer has been written, swap it back to rBuffer.
rBuffer = wBuffer;
}
/**
* Copy bytes from rBuffer to wBuffer.
* @param {number} startPtr The starting point to copy from rBuffer.
* @param {number} endPtr The ending point to copy from rBuffer.
*/
function rarWriteArea(startPtr, endPtr) {
if (endPtr < startPtr) {
console.error('endPtr < startPtr, endPtr=' + endPtr + ', startPtr=' + startPtr);
// rarWriteData(startPtr, -(int)StartPtr & MAXWINMASK);
// RarWriteData(0, endPtr);
return;
} else if (startPtr < endPtr) {
rarWriteData(startPtr, endPtr - startPtr);
}
}
/**
* Writes bytes into wBuffer from rBuffer.
* @param {number} offset The starting point to copy bytes from rBuffer.
* @param {number} numBytes The number of bytes to copy.
*/
function rarWriteData(offset, numBytes) {
if (wBuffer.ptr >= rBuffer.data.length) {
return;
}
var leftToWrite = rBuffer.data.length - wBuffer.ptr;
if (numBytes > leftToWrite) {
numBytes = leftToWrite;
}
for (var i = 0; i < numBytes; ++i) {
wBuffer.insertByte(rBuffer.data[offset + i]);
}
}
/**
* @param {VM_PreparedProgram} prg
*/
function rarExecuteCode(prg) {
if (prg.GlobalData.length > 0) {
var writtenFileSize = wBuffer.ptr;
prg.InitR[6] = writtenFileSize;
VM.setLowEndianValue(prg.GlobalData, writtenFileSize, 0x24);
VM.setLowEndianValue(prg.GlobalData, (writtenFileSize >>> 32) >> 0, 0x28);
VM.execute(prg);
}
}
function rarReadEndOfBlock(bstream) {
rarUpdateProgress();
var NewTable = false, NewFile = false;
var NewTable = false,
NewFile = false;
if (bstream.readBits(1)) {
NewTable = true;
} else {
@ -693,31 +1176,6 @@ function rarReadEndOfBlock(bstream) {
return !(NewFile || NewTable && !rarReadTables(bstream));
}
function rarReadVMCode(bstream) {
var FirstByte = bstream.readBits(8);
var Length = (FirstByte & 7) + 1;
if (Length === 7) {
Length = bstream.readBits(8) + 7;
} else if (Length === 8) {
Length = bstream.readBits(16);
}
var vmCode = [];
for (var I = 0; I < Length; I++) {
//do something here with cheking readbuf
vmCode.push(bstream.readBits(8));
}
return RarAddVMCode(FirstByte, vmCode, Length);
}
function RarAddVMCode(firstByte, vmCode, length) {
//console.log(vmCode);
if (vmCode.length > 0) {
info("Error! RarVM not supported yet!");
}
return true;
}
function rarInsertLastMatch(length, distance) {
lastDist = distance;
lastLength = length;
@ -728,59 +1186,69 @@ function rarInsertOldDist(distance) {
rOldDist.splice(0, 0, distance);
}
//this is the real function, the other one is for debugging
/**
* Copies len bytes from distance bytes ago in the buffer to the end of the
* current byte buffer.
* @param {number} length How many bytes to copy.
* @param {number} distance How far back in the buffer from the current write
* pointer to start copying from.
*/
function rarCopyString(length, distance) {
var destPtr = rBuffer.ptr - distance;
if (destPtr < 0) {
var srcPtr = rBuffer.ptr - distance;
if (srcPtr < 0) {
var l = rOldBuffers.length;
while (destPtr < 0) {
destPtr = rOldBuffers[--l].data.length + destPtr;
while (srcPtr < 0) {
srcPtr = rOldBuffers[--l].data.length + srcPtr;
}
// TODO: lets hope that it never needs to read beyond file boundaries
while (length--) {
rBuffer.insertByte(rOldBuffers[l].data[srcPtr++]);
}
//TODO: lets hope that it never needs to read beyond file boundaries
while (length--) rBuffer.insertByte(rOldBuffers[l].data[destPtr++]);
}
if (length > distance) {
while (length--) rBuffer.insertByte(rBuffer.data[destPtr++]);
while (length--) {
rBuffer.insertByte(rBuffer.data[srcPtr++]);
}
} else {
rBuffer.insertBytes(rBuffer.data.subarray(destPtr, destPtr + length));
rBuffer.insertBytes(rBuffer.data.subarray(srcPtr, srcPtr + length));
}
}
var rOldBuffers = [];
// v must be a valid RarVolume
/**
* @param {RarLocalFile} v
*/
function unpack(v) {
// TODO: implement what happens when unpVer is < 15
var Ver = v.header.unpVer <= 15 ? 15 : v.header.unpVer,
Solid = v.header.LHD_SOLID,
bstream = new bitjs.io.BitStream(v.fileData.buffer, true /* rtl */, v.fileData.byteOffset, v.fileData.byteLength );
var Ver = v.header.unpVer <= 15 ? 15 : v.header.unpVer;
var Solid = v.header.LHD_SOLID;
var bstream = new bitjs.io.BitStream(v.fileData.buffer, true /* rtl */ , v.fileData.byteOffset, v.fileData.byteLength);
rBuffer = new bitjs.io.ByteBuffer(v.header.unpackedSize);
info("Unpacking " + v.filename + " RAR v" + Ver);
switch(Ver) {
switch (Ver) {
case 15: // rar 1.5 compression
Unpack15(); //(bstream, Solid);
unpack15(); //(bstream, Solid);
break;
case 20: // rar 2.x compression
case 26: // files larger than 2GB
Unpack20(bstream); //, Solid);
unpack20(bstream); //, Solid);
break;
case 29: // rar 3.x compression
case 36: // alternative hash
Unpack29(bstream);
wBuffer = new bitjs.io.ByteBuffer(rBuffer.data.length);
unpack29(bstream);
break;
} // switch(method)
rOldBuffers.push(rBuffer);
//TODO: clear these old buffers when there's over 4MB of history
// TODO: clear these old buffers when there's over 4MB of history
return rBuffer.data;
}
// bstream is a bit stream
var RarLocalFile = function(bstream) {
this.header = new RarVolumeHeader(bstream);
this.filename = this.header.filename;
@ -798,7 +1266,6 @@ var RarLocalFile = function(bstream) {
};
RarLocalFile.prototype.unrar = function() {
if (!this.header.flags.LHD_SPLIT_BEFORE) {
// unstore file
if (this.header.method === 0x30) {
@ -836,7 +1303,6 @@ var unrar = function(arrayBuffer) {
header.headType === 0x72 &&
header.flags.value === 0x1A21 &&
header.headSize === 7) {
info("Found RAR signature");
var mhead = new RarVolumeHeader(bstream);
@ -859,7 +1325,7 @@ var unrar = function(arrayBuffer) {
break;
}
//info("bstream" + bstream.bytePtr+"/"+bstream.bytes.length);
} while ( localFile.isValid );
} while (localFile.isValid);
totalFilesInArchive = localFiles.length;
// now we have all information but things are unpacked
@ -870,7 +1336,9 @@ var unrar = function(arrayBuffer) {
return aname > bname ? 1 : -1;
});
info(localFiles.map(function(a) {return a.filename;}).join(", "));
info(localFiles.map(function(a) {
return a.filename;
}).join(", "));
for (var i = 0; i < localFiles.length; ++i) {
var localfile = localFiles[i];

167
cps/static/js/archive/untar.js Normal file
View File

@ -0,0 +1,167 @@
/**
* untar.js
*
* Licensed under the MIT License
*
* Copyright(c) 2011 Google Inc.
*
* Reference Documentation:
*
* TAR format: http://www.gnu.org/software/automake/manual/tar/Standard.html
*/
// This file expects to be invoked as a Worker (see onmessage below).
importScripts('../io/bytestream.js');
importScripts('archive.js');
// Progress variables.
var currentFilename = "";
var currentFileNumber = 0;
var currentBytesUnarchivedInFile = 0;
var currentBytesUnarchived = 0;
var totalUncompressedBytesInArchive = 0;
var totalFilesInArchive = 0;
// Helper functions.
var info = function(str) {
postMessage(new bitjs.archive.UnarchiveInfoEvent(str));
};
var err = function(str) {
postMessage(new bitjs.archive.UnarchiveErrorEvent(str));
};
// Removes all characters from the first zero-byte in the string onwards.
var readCleanString = function(bstr, numBytes) {
var str = bstr.readString(numBytes);
var zIndex = str.indexOf(String.fromCharCode(0));
return zIndex != -1 ? str.substr(0, zIndex) : str;
};
var postProgress = function() {
postMessage(new bitjs.archive.UnarchiveProgressEvent(
currentFilename,
currentFileNumber,
currentBytesUnarchivedInFile,
currentBytesUnarchived,
totalUncompressedBytesInArchive,
totalFilesInArchive,
));
};
// takes a ByteStream and parses out the local file information
var TarLocalFile = function(bstream) {
this.isValid = false;
var bytesRead = 0;
// Read in the header block
this.name = readCleanString(bstream, 100);
this.mode = readCleanString(bstream, 8);
this.uid = readCleanString(bstream, 8);
this.gid = readCleanString(bstream, 8);
this.size = parseInt(readCleanString(bstream, 12), 8);
this.mtime = readCleanString(bstream, 12);
this.chksum = readCleanString(bstream, 8);
this.typeflag = readCleanString(bstream, 1);
this.linkname = readCleanString(bstream, 100);
this.maybeMagic = readCleanString(bstream, 6);
if (this.maybeMagic == "ustar") {
this.version = readCleanString(bstream, 2);
this.uname = readCleanString(bstream, 32);
this.gname = readCleanString(bstream, 32);
this.devmajor = readCleanString(bstream, 8);
this.devminor = readCleanString(bstream, 8);
this.prefix = readCleanString(bstream, 155);
if (this.prefix.length) {
this.name = this.prefix + this.name;
}
bstream.readBytes(12); // 512 - 500
} else {
bstream.readBytes(255); // 512 - 257
}
bytesRead += 512;
// Done header, now rest of blocks are the file contents.
this.filename = this.name;
this.fileData = null;
info("Untarring file '" + this.filename + "'");
info(" size = " + this.size);
info(" typeflag = " + this.typeflag);
// A regular file.
if (this.typeflag == 0) {
info(" This is a regular file.");
var sizeInBytes = parseInt(this.size);
this.fileData = new Uint8Array(bstream.readBytes(sizeInBytes));
bytesRead += sizeInBytes;
if (this.name.length > 0 && this.size > 0 && this.fileData && this.fileData.buffer) {
this.isValid = true;
}
// Round up to 512-byte blocks.
var remaining = 512 - bytesRead % 512;
if (remaining > 0 && remaining < 512) {
bstream.readBytes(remaining);
}
} else if (this.typeflag == 5) {
info(" This is a directory.");
}
}
var untar = function(arrayBuffer) {
postMessage(new bitjs.archive.UnarchiveStartEvent());
currentFilename = "";
currentFileNumber = 0;
currentBytesUnarchivedInFile = 0;
currentBytesUnarchived = 0;
totalUncompressedBytesInArchive = 0;
totalFilesInArchive = 0;
allLocalFiles = [];
var bstream = new bitjs.io.ByteStream(arrayBuffer);
postProgress();
// While we don't encounter an empty block, keep making TarLocalFiles.
while (bstream.peekNumber(4) != 0) {
var oneLocalFile = new TarLocalFile(bstream);
if (oneLocalFile && oneLocalFile.isValid) {
// If we make it to this point and haven't thrown an error, we have successfully
// read in the data for a local file, so we can update the actual bytestream.
allLocalFiles.push(oneLocalFile);
totalUncompressedBytesInArchive += oneLocalFile.size;
// update progress
currentFilename = oneLocalFile.filename;
currentFileNumber = totalFilesInArchive++;
currentBytesUnarchivedInFile = oneLocalFile.size;
currentBytesUnarchived += oneLocalFile.size;
postMessage(new bitjs.archive.UnarchiveExtractEvent(oneLocalFile));
postProgress();
}
}
totalFilesInArchive = allLocalFiles.length;
postProgress();
postMessage(new bitjs.archive.UnarchiveFinishEvent());
};
// event.data.file has the first ArrayBuffer.
// event.data.bytes has all subsequent ArrayBuffers.
onmessage = function(event) {
try {
untar(event.data.file, true);
} catch (e) {
if (typeof e === "string" && e.startsWith("Error! Overflowed")) {
// Overrun the buffer.
// unarchiveState = UnarchiveState.WAITING;
} else {
console.error("Found an error while untarring");
console.log(e);
throw e;
}
}
};

165
cps/static/js/unzip.js → cps/static/js/archive/unzip.js
View File

@ -1,6 +1,8 @@
/**
* unzip.js
*
* Licensed under the MIT License
*
* Copyright(c) 2011 Google Inc.
* Copyright(c) 2011 antimatter15
*
@ -12,8 +14,10 @@
/* global bitjs, importScripts, Uint8Array*/
// This file expects to be invoked as a Worker (see onmessage below).
importScripts("io.js");
importScripts("archive.js");
importScripts('../io/bitstream.js');
importScripts('../io/bytebuffer.js');
importScripts('../io/bytestream.js');
importScripts('archive.js');
// Progress variables.
var currentFilename = "";
@ -47,7 +51,7 @@ var zDigitalSignatureSignature = 0x05054b50;
// takes a ByteStream and parses out the local file information
var ZipLocalFile = function(bstream) {
if (typeof bstream != typeof {} || !bstream.readNumber || typeof bstream.readNumber != typeof function() {}) {
if (typeof bstream !== typeof {} || !bstream.readNumber || typeof bstream.readNumber !== typeof function() {}) {
return null;
}
@ -98,7 +102,7 @@ var ZipLocalFile = function(bstream) {
// "This descriptor exists only if bit 3 of the general purpose bit flag is set"
// But how do you figure out how big the file data is if you don't know the compressedSize
// from the header?!?
if ((this.generalPurpose & bitjs.BIT[3]) != 0) {
if ((this.generalPurpose & bitjs.BIT[3]) !== 0) {
this.crc32 = bstream.readNumber(4);
this.compressedSize = bstream.readNumber(4);
this.uncompressedSize = bstream.readNumber(4);
@ -109,14 +113,14 @@ var ZipLocalFile = function(bstream) {
ZipLocalFile.prototype.unzip = function() {
// Zip Version 1.0, no compression (store only)
if (this.compressionMethod == 0 ) {
if (this.compressionMethod === 0 ) {
info("ZIP v" + this.version + ", store only: " + this.filename + " (" + this.compressedSize + " bytes)");
currentBytesUnarchivedInFile = this.compressedSize;
currentBytesUnarchived += this.compressedSize;
this.fileData = zeroCompression(this.fileData, this.uncompressedSize);
}
// version == 20, compression method == 8 (DEFLATE)
else if (this.compressionMethod == 8) {
else if (this.compressionMethod === 8) {
info("ZIP v2.0, DEFLATE: " + this.filename + " (" + this.compressedSize + " bytes)");
this.fileData = inflate(this.fileData, this.uncompressedSize);
}
@ -143,10 +147,10 @@ var unzip = function(arrayBuffer) {
var bstream = new bitjs.io.ByteStream(arrayBuffer);
// detect local file header signature or return null
if (bstream.peekNumber(4) == zLocalFileHeaderSignature) {
if (bstream.peekNumber(4) === zLocalFileHeaderSignature) {
var localFiles = [];
// loop until we don't see any more local files
while (bstream.peekNumber(4) == zLocalFileHeaderSignature) {
while (bstream.peekNumber(4) === zLocalFileHeaderSignature) {
var oneLocalFile = new ZipLocalFile(bstream);
// this should strip out directories/folders
if (oneLocalFile && oneLocalFile.uncompressedSize > 0 && oneLocalFile.fileData) {
@ -164,7 +168,7 @@ var unzip = function(arrayBuffer) {
});
// archive extra data record
if (bstream.peekNumber(4) == zArchiveExtraDataSignature) {
if (bstream.peekNumber(4) === zArchiveExtraDataSignature) {
info(" Found an Archive Extra Data Signature");
// skipping this record for now
@ -175,11 +179,11 @@ var unzip = function(arrayBuffer) {
// central directory structure
// TODO: handle the rest of the structures (Zip64 stuff)
if (bstream.peekNumber(4) == zCentralFileHeaderSignature) {
if (bstream.peekNumber(4) === zCentralFileHeaderSignature) {
info(" Found a Central File Header");
// read all file headers
while (bstream.peekNumber(4) == zCentralFileHeaderSignature) {
while (bstream.peekNumber(4) === zCentralFileHeaderSignature) {
bstream.readNumber(4); // signature
bstream.readNumber(2); // version made by
bstream.readNumber(2); // version needed to extract
@ -205,7 +209,7 @@ var unzip = function(arrayBuffer) {
}
// digital signature
if (bstream.peekNumber(4) == zDigitalSignatureSignature) {
if (bstream.peekNumber(4) === zDigitalSignatureSignature) {
info(" Found a Digital Signature");
bstream.readNumber(4);
@ -230,7 +234,7 @@ var unzip = function(arrayBuffer) {
// actually do the unzipping
localfile.unzip();
if (localfile.fileData != null) {
if (localfile.fileData !== null) {
postMessage(new bitjs.archive.UnarchiveExtractEvent(localfile));
postProgress();
}
@ -245,7 +249,7 @@ var unzip = function(arrayBuffer) {
// containing {length: 6, symbol: X}
function getHuffmanCodes(bitLengths) {
// ensure bitLengths is an array containing at least one element
if (typeof bitLengths != typeof [] || bitLengths.length < 1) {
if (typeof bitLengths !== typeof [] || bitLengths.length < 1) {
err("Error! getHuffmanCodes() called with an invalid array");
return null;
}
@ -259,12 +263,12 @@ function getHuffmanCodes(bitLengths) {
for (var i = 0; i < numLengths; ++i) {
var length = bitLengths[i];
// test to ensure each bit length is a positive, non-zero number
if (typeof length != typeof 1 || length < 0) {
if (typeof length !== typeof 1 || length < 0) {
err("bitLengths contained an invalid number in getHuffmanCodes(): " + length + " of type " + (typeof length));
return null;
}
// increment the appropriate bitlength count
if (blCount[length] == undefined) blCount[length] = 0;
if (typeof blCount[length] === "undefined") blCount[length] = 0;
// a length of zero means this symbol is not participating in the huffman coding
if (length > 0) blCount[length]++;
@ -275,18 +279,19 @@ function getHuffmanCodes(bitLengths) {
var nextCode = [],
code = 0;
for (var bits = 1; bits <= MAX_BITS; ++bits) {
var length = bits - 1;
var length2 = bits - 1;
// ensure undefined lengths are zero
if (blCount[length] == undefined) blCount[length] = 0;
if (typeof blCount[length2] === "undefined") blCount[length2] = 0;
code = (code + blCount[bits - 1]) << 1;
nextCode [bits] = code;
}
// Step 3: Assign numerical values to all codes
var table = {}, tableLength = 0;
var table = {},
tableLength = 0;
for (var n = 0; n < numLengths; ++n) {
var len = bitLengths[n];
if (len != 0) {
if (len !== 0) {
table[nextCode [len]] = { length: len, symbol: n }; //, bitstring: binaryValueToString(nextCode [len],len) };
tableLength++;
nextCode [len]++;
@ -316,6 +321,7 @@ function getHuffmanCodes(bitLengths) {
// fixed Huffman codes go from 7-9 bits, so we need an array whose index can hold up to 9 bits
var fixedHCtoLiteral = null;
var fixedHCtoDistance = null;
function getFixedLiteralTable() {
// create once
if (!fixedHCtoLiteral) {
@ -331,6 +337,7 @@ function getFixedLiteralTable() {
}
return fixedHCtoLiteral;
}
function getFixedDistanceTable() {
// create once
if (!fixedHCtoDistance) {
@ -358,7 +365,7 @@ function decodeSymbol(bstream, hcTable) {
++len;
// check against Huffman Code table and break if found
if (hcTable.hasOwnProperty(code) && hcTable[code].length == len) {
if (hcTable.hasOwnProperty(code) && hcTable[code].length === len) {
break;
}
@ -387,16 +394,36 @@ Code Bits Length(s) Code Bits Lengths Code Bits Length(s)
264 0 10 274 3 43-50 284 5 227-257
265 1 11,12 275 3 51-58 285 0 258
266 1 13,14 276 3 59-66
*/
var LengthLookupTable = [
[0, 3], [0, 4], [0, 5], [0, 6],
[0, 7], [0, 8], [0, 9], [0, 10],
[1, 11], [1, 13], [1, 15], [1, 17],
[2, 19], [2, 23], [2, 27], [2, 31],
[3, 35], [3, 43], [3, 51], [3, 59],
[4, 67], [4, 83], [4, 99], [4, 115],
[5, 131], [5, 163], [5, 195], [5, 227],
[0, 3],
[0, 4],
[0, 5],
[0, 6],
[0, 7],
[0, 8],
[0, 9],
[0, 10],
[1, 11],
[1, 13],
[1, 15],
[1, 17],
[2, 19],
[2, 23],
[2, 27],
[2, 31],
[3, 35],
[3, 43],
[3, 51],
[3, 59],
[4, 67],
[4, 83],
[4, 99],
[4, 115],
[5, 131],
[5, 163],
[5, 195],
[5, 227],
[0, 258]
];
/*
@ -415,20 +442,36 @@ var LengthLookupTable = [
9 3 25-32 19 8 769-1024 29 13 24577-32768
*/
var DistLookupTable = [
[0, 1], [0, 2], [0, 3], [0, 4],
[1, 5], [1, 7],
[2, 9], [2, 13],
[3, 17], [3, 25],
[4, 33], [4, 49],
[5, 65], [5, 97],
[6, 129], [6, 193],
[7, 257], [7, 385],
[8, 513], [8, 769],
[9, 1025], [9, 1537],
[10, 2049], [10, 3073],
[11, 4097], [11, 6145],
[12, 8193], [12, 12289],
[13, 16385], [13, 24577]
[0, 1],
[0, 2],
[0, 3],
[0, 4],
[1, 5],
[1, 7],
[2, 9],
[2, 13],
[3, 17],
[3, 25],
[4, 33],
[4, 49],
[5, 65],
[5, 97],
[6, 129],
[6, 193],
[7, 257],
[7, 385],
[8, 513],
[8, 769],
[9, 1025],
[9, 1537],
[10, 2049],
[10, 3073],
[11, 4097],
[11, 6145],
[12, 8193],
[12, 12289],
[13, 16385],
[13, 24577]
];
function inflateBlockData(bstream, hcLiteralTable, hcDistanceTable, buffer) {
@ -457,7 +500,7 @@ function inflateBlockData(bstream, hcLiteralTable, hcDistanceTable, buffer) {
}
else {
// end of block reached
if (symbol == 256) {
if (symbol === 256) {
break;
}
else {
@ -485,9 +528,8 @@ function inflateBlockData(bstream, hcLiteralTable, hcDistanceTable, buffer) {
buffer.insertByte(data[ch++]);
}
} else {
buffer.insertBytes(buffer.data.subarray(ch, ch + length));
buffer.insertBytes(buffer.data.subarray(ch, ch + length));
}
} // length-distance pair
} // length-distance pair or end-of-block
} // loop until we reach end of block
@ -514,37 +556,38 @@ function inflate(compressedData, numDecompressedBytes) {
compressedData.byteOffset,
compressedData.byteLength);
var buffer = new bitjs.io.ByteBuffer(numDecompressedBytes);
var numBlocks = 0, blockSize = 0;
var blockSize = 0;
// block format: http://tools.ietf.org/html/rfc1951#page-9
var bFinal = 0;
do {
var bFinal = bstream.readBits(1),
bType = bstream.readBits(2);
bFinal = bstream.readBits(1);
var bType = bstream.readBits(2);
blockSize = 0;
++numBlocks;
// ++numBlocks;
// no compression
if (bType == 0) {
// skip remaining bits in this byte
while (bstream.bitPtr != 0) bstream.readBits(1);
while (bstream.bitPtr !== 0) bstream.readBits(1);
var len = bstream.readBits(16);
bstream.readBits(16);
// TODO: check if nlen is the ones-complement of len?
// TODO: check if nlen is the ones-complement of len?
if (len > 0) buffer.insertBytes(bstream.readBytes(len));
blockSize = len;
}
// fixed Huffman codes
else if(bType == 1) {
else if (bType === 1) {
blockSize = inflateBlockData(bstream, getFixedLiteralTable(), getFixedDistanceTable(), buffer);
}
// dynamic Huffman codes
else if(bType == 2) {
else if (bType === 2) {
var numLiteralLengthCodes = bstream.readBits(5) + 257;
var numDistanceCodes = bstream.readBits(5) + 1,
numCodeLengthCodes = bstream.readBits(4) + 4;
// populate the array of code length codes (first de-compaction)
var codeLengthsCodeLengths = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0];
var codeLengthsCodeLengths = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (var i = 0; i < numCodeLengthCodes; ++i) {
codeLengthsCodeLengths[ CodeLengthCodeOrder[i] ] = bstream.readBits(3);
}
@ -575,19 +618,17 @@ function inflate(compressedData, numDecompressedBytes) {
if (symbol <= 15) {
literalCodeLengths.push(symbol);
prevCodeLength = symbol;
}
else if (symbol == 16) {
} else if (symbol === 16) {
var repeat = bstream.readBits(2) + 3;
while (repeat--) {
literalCodeLengths.push(prevCodeLength);
}
}
else if (symbol == 17) {
} else if (symbol === 17) {
var repeat1 = bstream.readBits(3) + 3;
while (repeat1--) {
literalCodeLengths.push(0);
}
} else if (symbol == 18) {
} else if (symbol === 18) {
var repeat2 = bstream.readBits(7) + 11;
while (repeat2--) {
literalCodeLengths.push(0);
@ -613,7 +654,7 @@ function inflate(compressedData, numDecompressedBytes) {
currentBytesUnarchived += blockSize;
postProgress();
} while (bFinal != 1);
} while (bFinal !== 1);
// we are done reading blocks if the bFinal bit was set for this block
// return the buffer data bytes
@ -623,4 +664,4 @@ function inflate(compressedData, numDecompressedBytes) {
// event.data.file has the ArrayBuffer.
onmessage = function(event) {
unzip(event.data.file, true);
};
};

308
cps/static/js/bytestream.js
View File

@ -1,308 +0,0 @@
/*
* bytestream.js
*
* Provides readers for byte streams.
*
* Licensed under the MIT License
*
* Copyright(c) 2011 Google Inc.
* Copyright(c) 2011 antimatter15
*/
var bitjs = bitjs || {};
bitjs.io = bitjs.io || {};
/**
* This object allows you to peek and consume bytes as numbers and strings out
* of a stream. More bytes can be pushed into the back of the stream via the
* push() method.
*/
bitjs.io.ByteStream = class {
/**
* @param {ArrayBuffer} ab The ArrayBuffer object.
* @param {number=} opt_offset The offset into the ArrayBuffer
* @param {number=} opt_length The length of this BitStream
*/
constructor(ab, opt_offset, opt_length) {
if (!(ab instanceof ArrayBuffer)) {
throw 'Error! BitArray constructed with an invalid ArrayBuffer object';
}
const offset = opt_offset || 0;
const length = opt_length || ab.byteLength;
/**
* The current page of bytes in the stream.
* @type {Uint8Array}
* @private
*/
this.bytes = new Uint8Array(ab, offset, length);
/**
* The next pages of bytes in the stream.
* @type {Array<Uint8Array>}
* @private
*/
this.pages_ = [];
/**
* The byte in the current page that we will read next.
* @type {Number}
* @private
*/
this.ptr = 0;
/**
* An ever-increasing number.
* @type {Number}
* @private
*/
this.bytesRead_ = 0;
}
/**
* Returns how many bytes have been read in the stream since the beginning of time.
*/
getNumBytesRead() {
return this.bytesRead_;
}
/**
* Returns how many bytes are currently in the stream left to be read.
*/
getNumBytesLeft() {
const bytesInCurrentPage = (this.bytes.byteLength - this.ptr);
return this.pages_.reduce((acc, arr) => acc + arr.length, bytesInCurrentPage);
}
/**
* Move the pointer ahead n bytes. If the pointer is at the end of the current array
* of bytes and we have another page of bytes, point at the new page. This is a private
* method, no validation is done.
* @param {number} n Number of bytes to increment.
* @private
*/
movePointer_(n) {
this.ptr += n;
this.bytesRead_ += n;
while (this.ptr >= this.bytes.length && this.pages_.length > 0) {
this.ptr -= this.bytes.length;
this.bytes = this.pages_.shift();
}
}
/**
* Peeks at the next n bytes as an unsigned number but does not advance the
* pointer.
* @param {number} n The number of bytes to peek at. Must be a positive integer.
* @return {number} The n bytes interpreted as an unsigned number.
*/
peekNumber(n) {
const num = parseInt(n, 10);
if (n !== num || num < 0) {
throw 'Error! Called peekNumber() with a non-positive integer';
} else if (num === 0) {
return 0;
}
if (n > 4) {
throw 'Error! Called peekNumber(' + n +
') but this method can only reliably read numbers up to 4 bytes long';
}
if (this.getNumBytesLeft() < num) {
throw 'Error! Overflowed the byte stream while peekNumber()! n=' + num +
', ptr=' + this.ptr + ', bytes.length=' + this.getNumBytesLeft();
}
let result = 0;
let curPage = this.bytes;
let pageIndex = 0;
let ptr = this.ptr;
for (let i = 0; i < num; ++i) {
result |= (curPage[ptr++] << (i * 8));
if (ptr >= curPage.length) {
curPage = this.pages_[pageIndex++];
ptr = 0;
}
}
return result;
}
/**
* Returns the next n bytes as an unsigned number (or -1 on error)
* and advances the stream pointer n bytes.
* @param {number} n The number of bytes to read. Must be a positive integer.
* @return {number} The n bytes interpreted as an unsigned number.
*/
readNumber(n) {
const num = this.peekNumber(n);
this.movePointer_(n);
return num;
}
/**
* Returns the next n bytes as a signed number but does not advance the
* pointer.
* @param {number} n The number of bytes to read. Must be a positive integer.
* @return {number} The bytes interpreted as a signed number.
*/
peekSignedNumber(n) {
let num = this.peekNumber(n);
const HALF = Math.pow(2, (n * 8) - 1);
const FULL = HALF * 2;
if (num >= HALF) num -= FULL;
return num;
}
/**
* Returns the next n bytes as a signed number and advances the stream pointer.
* @param {number} n The number of bytes to read. Must be a positive integer.
* @return {number} The bytes interpreted as a signed number.
*/
readSignedNumber(n) {
const num = this.peekSignedNumber(n);
this.movePointer_(n);
return num;
}
/**
* This returns n bytes as a sub-array, advancing the pointer if movePointers
* is true.
* @param {number} n The number of bytes to read. Must be a positive integer.
* @param {boolean} movePointers Whether to move the pointers.
* @return {Uint8Array} The subarray.
*/
peekBytes(n, movePointers) {
const num = parseInt(n, 10);
if (n !== num || num < 0) {
throw 'Error! Called peekBytes() with a non-positive integer';
} else if (num === 0) {
return new Uint8Array();
}
const totalBytesLeft = this.getNumBytesLeft();
if (num > totalBytesLeft) {
throw 'Error! Overflowed the byte stream during peekBytes! n=' + num +
', ptr=' + this.ptr + ', bytes.length=' + this.getNumBytesLeft();
}
const result = new Uint8Array(num);
let curPage = this.bytes;
let ptr = this.ptr;
let bytesLeftToCopy = num;
let pageIndex = 0;
while (bytesLeftToCopy > 0) {
const bytesLeftInPage = curPage.length - ptr;
const sourceLength = Math.min(bytesLeftToCopy, bytesLeftInPage);
result.set(curPage.subarray(ptr, ptr + sourceLength), num - bytesLeftToCopy);
ptr += sourceLength;
if (ptr >= curPage.length) {
curPage = this.pages_[pageIndex++];
ptr = 0;
}
bytesLeftToCopy -= sourceLength;
}
if (movePointers) {
this.movePointer_(num);
}
return result;
}
/**
* Reads the next n bytes as a sub-array.
* @param {number} n The number of bytes to read. Must be a positive integer.
* @return {Uint8Array} The subarray.
*/
readBytes(n) {
return this.peekBytes(n, true);
}
/**
* Peeks at the next n bytes as an ASCII string but does not advance the pointer.
* @param {number} n The number of bytes to peek at. Must be a positive integer.
* @return {string} The next n bytes as a string.
*/
peekString(n) {
const num = parseInt(n, 10);
if (n !== num || num < 0) {
throw 'Error! Called peekString() with a non-positive integer';
} else if (num === 0) {
return '';
}
const totalBytesLeft = this.getNumBytesLeft();
if (num > totalBytesLeft) {
throw 'Error! Overflowed the byte stream while peekString()! n=' + num +
', ptr=' + this.ptr + ', bytes.length=' + this.getNumBytesLeft();
}
let result = new Array(num);
let curPage = this.bytes;
let pageIndex = 0;
let ptr = this.ptr;
for (let i = 0; i < num; ++i) {
result[i] = String.fromCharCode(curPage[ptr++]);
if (ptr >= curPage.length) {
curPage = this.pages_[pageIndex++];
ptr = 0;
}
}
return result.join('');
}
/**
* Returns the next n bytes as an ASCII string and advances the stream pointer
* n bytes.
* @param {number} n The number of bytes to read. Must be a positive integer.
* @return {string} The next n bytes as a string.
*/
readString(n) {
const strToReturn = this.peekString(n);
this.movePointer_(n);
return strToReturn;
}
/**
* Feeds more bytes into the back of the stream.
* @param {ArrayBuffer} ab
*/
push(ab) {
if (!(ab instanceof ArrayBuffer)) {
throw 'Error! ByteStream.push() called with an invalid ArrayBuffer object';
}
this.pages_.push(new Uint8Array(ab));
// If the pointer is at the end of the current page of bytes, this will advance
// to the next page.
this.movePointer_(0);
}
/**
* Creates a new ByteStream from this ByteStream that can be read / peeked.
* @return {bitjs.io.ByteStream} A clone of this ByteStream.
*/
tee() {
const clone = new bitjs.io.ByteStream(this.bytes.buffer);
clone.bytes = this.bytes;
clone.ptr = this.ptr;
clone.pages_ = this.pages_.slice();
clone.bytesRead_ = this.bytesRead_;
return clone;
}
}

233
cps/static/js/io/bitstream.js Normal file
View File

@ -0,0 +1,233 @@
/*
* bitstream.js
*
* Provides readers for bitstreams.
*
* Licensed under the MIT License
*
* Copyright(c) 2011 Google Inc.
* Copyright(c) 2011 antimatter15
*/
var bitjs = bitjs || {};
bitjs.io = bitjs.io || {};
(function() {
// mask for getting the Nth bit (zero-based)
bitjs.BIT = [0x01, 0x02, 0x04, 0x08,
0x10, 0x20, 0x40, 0x80,
0x100, 0x200, 0x400, 0x800,
0x1000, 0x2000, 0x4000, 0x8000
];
// mask for getting N number of bits (0-8)
var BITMASK = [0, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF];
/**
* This bit stream peeks and consumes bits out of a binary stream.
*
* @param {ArrayBuffer} ab An ArrayBuffer object or a Uint8Array.
* @param {boolean} rtl Whether the stream reads bits from the byte starting
* from bit 7 to 0 (true) or bit 0 to 7 (false).
* @param {Number} opt_offset The offset into the ArrayBuffer
* @param {Number} opt_length The length of this BitStream
*/
bitjs.io.BitStream = function(ab, rtl, opt_offset, opt_length) {
if (!ab || !ab.toString || ab.toString() !== "[object ArrayBuffer]") {
throw "Error! BitArray constructed with an invalid ArrayBuffer object";
}
var offset = opt_offset || 0;
var length = opt_length || ab.byteLength;
this.bytes = new Uint8Array(ab, offset, length);
this.bytePtr = 0; // tracks which byte we are on
this.bitPtr = 0; // tracks which bit we are on (can have values 0 through 7)
this.peekBits = rtl ? this.peekBits_rtl : this.peekBits_ltr;
};
/**
* byte0 byte1 byte2 byte3
* 7......0 | 7......0 | 7......0 | 7......0
*
* The bit pointer starts at bit0 of byte0 and moves left until it reaches
* bit7 of byte0, then jumps to bit0 of byte1, etc.
* @param {number} n The number of bits to peek.
* @param {boolean=} movePointers Whether to move the pointer, defaults false.
* @return {number} The peeked bits, as an unsigned number.
*/
bitjs.io.BitStream.prototype.peekBits_ltr = function(n, movePointers) {
if (n <= 0 || typeof n != typeof 1) {
return 0;
}
var movePointers = movePointers || false,
bytePtr = this.bytePtr,
bitPtr = this.bitPtr,
result = 0,
bitsIn = 0,
bytes = this.bytes;
// keep going until we have no more bits left to peek at
// TODO: Consider putting all bits from bytes we will need into a variable and then
// shifting/masking it to just extract the bits we want.
// This could be considerably faster when reading more than 3 or 4 bits at a time.
while (n > 0) {
if (bytePtr >= bytes.length) {
throw "Error! Overflowed the bit stream! n=" + n + ", bytePtr=" + bytePtr + ", bytes.length=" +
bytes.length + ", bitPtr=" + bitPtr;
return -1;
}
var numBitsLeftInThisByte = (8 - bitPtr);
if (n >= numBitsLeftInThisByte) {
var mask = (BITMASK[numBitsLeftInThisByte] << bitPtr);
result |= (((bytes[bytePtr] & mask) >> bitPtr) << bitsIn);
bytePtr++;
bitPtr = 0;
bitsIn += numBitsLeftInThisByte;
n -= numBitsLeftInThisByte;
} else {
var mask = (BITMASK[n] << bitPtr);
result |= (((bytes[bytePtr] & mask) >> bitPtr) << bitsIn);
bitPtr += n;
bitsIn += n;
n = 0;
}
}
if (movePointers) {
this.bitPtr = bitPtr;
this.bytePtr = bytePtr;
}
return result;
};
/**
* byte0 byte1 byte2 byte3
* 7......0 | 7......0 | 7......0 | 7......0
*
* The bit pointer starts at bit7 of byte0 and moves right until it reaches
* bit0 of byte0, then goes to bit7 of byte1, etc.
* @param {number} n The number of bits to peek.
* @param {boolean=} movePointers Whether to move the pointer, defaults false.
* @return {number} The peeked bits, as an unsigned number.
*/
bitjs.io.BitStream.prototype.peekBits_rtl = function(n, movePointers) {
if (n <= 0 || typeof n != typeof 1) {
return 0;
}
var movePointers = movePointers || false,
bytePtr = this.bytePtr,
bitPtr = this.bitPtr,
result = 0,
bytes = this.bytes;
// keep going until we have no more bits left to peek at
// TODO: Consider putting all bits from bytes we will need into a variable and then
// shifting/masking it to just extract the bits we want.
// This could be considerably faster when reading more than 3 or 4 bits at a time.
while (n > 0) {
if (bytePtr >= bytes.length) {
throw "Error! Overflowed the bit stream! n=" + n + ", bytePtr=" + bytePtr + ", bytes.length=" +
bytes.length + ", bitPtr=" + bitPtr;
return -1;
}
var numBitsLeftInThisByte = (8 - bitPtr);
if (n >= numBitsLeftInThisByte) {
result <<= numBitsLeftInThisByte;
result |= (BITMASK[numBitsLeftInThisByte] & bytes[bytePtr]);
bytePtr++;
bitPtr = 0;
n -= numBitsLeftInThisByte;
} else {
result <<= n;
result |= ((bytes[bytePtr] & (BITMASK[n] << (8 - n - bitPtr))) >> (8 - n - bitPtr));
bitPtr += n;
n = 0;
}
}
if (movePointers) {
this.bitPtr = bitPtr;
this.bytePtr = bytePtr;
}
return result;
};
/**
* Peek at 16 bits from current position in the buffer.
* Bit at (bytePtr,bitPtr) has the highest position in returning data.
* Taken from getbits.hpp in unrar.
* TODO: Move this out of BitStream and into unrar.
*/
bitjs.io.BitStream.prototype.getBits = function() {
return (((((this.bytes[this.bytePtr] & 0xff) << 16) +
((this.bytes[this.bytePtr + 1] & 0xff) << 8) +
((this.bytes[this.bytePtr + 2] & 0xff))) >>> (8 - this.bitPtr)) & 0xffff);
};
/**
* Reads n bits out of the stream, consuming them (moving the bit pointer).
* @param {number} n The number of bits to read.
* @return {number} The read bits, as an unsigned number.
*/
bitjs.io.BitStream.prototype.readBits = function(n) {
return this.peekBits(n, true);
};
/**
* This returns n bytes as a sub-array, advancing the pointer if movePointers
* is true. Only use this for uncompressed blocks as this throws away remaining
* bits in the current byte.
* @param {number} n The number of bytes to peek.
* @param {boolean=} movePointers Whether to move the pointer, defaults false.
* @return {Uint8Array} The subarray.
*/
bitjs.io.BitStream.prototype.peekBytes = function(n, movePointers) {
if (n <= 0 || typeof n != typeof 1) {
return 0;
}
// from http://tools.ietf.org/html/rfc1951#page-11
// "Any bits of input up to the next byte boundary are ignored."
while (this.bitPtr != 0) {
this.readBits(1);
}
var movePointers = movePointers || false;
var bytePtr = this.bytePtr,
bitPtr = this.bitPtr;
var result = this.bytes.subarray(bytePtr, bytePtr + n);
if (movePointers) {
this.bytePtr += n;
}
return result;
};
/**
* @param {number} n The number of bytes to read.
* @return {Uint8Array} The subarray.
*/
bitjs.io.BitStream.prototype.readBytes = function(n) {
return this.peekBytes(n, true);
};
})();

121
cps/static/js/io/bytebuffer.js Normal file
View File

@ -0,0 +1,121 @@
/*
* bytestream.js
*
* Provides a writer for bytes.
*
* Licensed under the MIT License
*
* Copyright(c) 2011 Google Inc.
* Copyright(c) 2011 antimatter15
*/
var bitjs = bitjs || {};
bitjs.io = bitjs.io || {};
(function() {
/**
* A write-only Byte buffer which uses a Uint8 Typed Array as a backing store.
* @param {number} numBytes The number of bytes to allocate.
* @constructor
*/
bitjs.io.ByteBuffer = function(numBytes) {
if (typeof numBytes != typeof 1 || numBytes <= 0) {
throw "Error! ByteBuffer initialized with '" + numBytes + "'";
}
this.data = new Uint8Array(numBytes);
this.ptr = 0;
};
/**
* @param {number} b The byte to insert.
*/
bitjs.io.ByteBuffer.prototype.insertByte = function(b) {
// TODO: throw if byte is invalid?
this.data[this.ptr++] = b;
};
/**
* @param {Array.<number>|Uint8Array|Int8Array} bytes The bytes to insert.
*/
bitjs.io.ByteBuffer.prototype.insertBytes = function(bytes) {
// TODO: throw if bytes is invalid?
this.data.set(bytes, this.ptr);
this.ptr += bytes.length;
};
/**
* Writes an unsigned number into the next n bytes. If the number is too large
* to fit into n bytes or is negative, an error is thrown.
* @param {number} num The unsigned number to write.
* @param {number} numBytes The number of bytes to write the number into.
*/
bitjs.io.ByteBuffer.prototype.writeNumber = function(num, numBytes) {
if (numBytes < 1) {
throw 'Trying to write into too few bytes: ' + numBytes;
}
if (num < 0) {
throw 'Trying to write a negative number (' + num +
') as an unsigned number to an ArrayBuffer';
}
if (num > (Math.pow(2, numBytes * 8) - 1)) {
throw 'Trying to write ' + num + ' into only ' + numBytes + ' bytes';
}
// Roll 8-bits at a time into an array of bytes.
var bytes = [];
while (numBytes-- > 0) {
var eightBits = num & 255;
bytes.push(eightBits);
num >>= 8;
}
this.insertBytes(bytes);
};
/**
* Writes a signed number into the next n bytes. If the number is too large
* to fit into n bytes, an error is thrown.
* @param {number} num The signed number to write.
* @param {number} numBytes The number of bytes to write the number into.
*/
bitjs.io.ByteBuffer.prototype.writeSignedNumber = function(num, numBytes) {
if (numBytes < 1) {
throw 'Trying to write into too few bytes: ' + numBytes;
}
var HALF = Math.pow(2, (numBytes * 8) - 1);
if (num >= HALF || num < -HALF) {
throw 'Trying to write ' + num + ' into only ' + numBytes + ' bytes';
}
// Roll 8-bits at a time into an array of bytes.
var bytes = [];
while (numBytes-- > 0) {
var eightBits = num & 255;
bytes.push(eightBits);
num >>= 8;
}
this.insertBytes(bytes);
};
/**
* @param {string} str The ASCII string to write.
*/
bitjs.io.ByteBuffer.prototype.writeASCIIString = function(str) {
for (var i = 0; i < str.length; ++i) {
var curByte = str.charCodeAt(i);
if (curByte < 0 || curByte > 255) {
throw 'Trying to write a non-ASCII string!';
}
this.insertByte(curByte);
}
};
})();

162
cps/static/js/io/bytestream.js Normal file
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@ -0,0 +1,162 @@
/*
* bytestream.js
*
* Provides readers for byte streams.
*
* Licensed under the MIT License
*
* Copyright(c) 2011 Google Inc.
* Copyright(c) 2011 antimatter15
*/
var bitjs = bitjs || {};
bitjs.io = bitjs.io || {};
(function() {
/**
* This object allows you to peek and consume bytes as numbers and strings
* out of an ArrayBuffer. In this buffer, everything must be byte-aligned.
*
* @param {ArrayBuffer} ab The ArrayBuffer object.
* @param {number=} opt_offset The offset into the ArrayBuffer
* @param {number=} opt_length The length of this BitStream
* @constructor
*/
bitjs.io.ByteStream = function(ab, opt_offset, opt_length) {
var offset = opt_offset || 0;
var length = opt_length || ab.byteLength;
this.bytes = new Uint8Array(ab, offset, length);
this.ptr = 0;
};
/**
* Peeks at the next n bytes as an unsigned number but does not advance the
* pointer
* TODO: This apparently cannot read more than 4 bytes as a number?
* @param {number} n The number of bytes to peek at.
* @return {number} The n bytes interpreted as an unsigned number.
*/
bitjs.io.ByteStream.prototype.peekNumber = function(n) {
// TODO: return error if n would go past the end of the stream?
if (n <= 0 || typeof n != typeof 1)
return -1;
var result = 0;
// read from last byte to first byte and roll them in
var curByte = this.ptr + n - 1;
while (curByte >= this.ptr) {
result <<= 8;
result |= this.bytes[curByte];
--curByte;
}
return result;
};
/**
* Returns the next n bytes as an unsigned number (or -1 on error)
* and advances the stream pointer n bytes.
* @param {number} n The number of bytes to read.
* @return {number} The n bytes interpreted as an unsigned number.
*/
bitjs.io.ByteStream.prototype.readNumber = function(n) {
var num = this.peekNumber(n);
this.ptr += n;
return num;
};
/**
* Returns the next n bytes as a signed number but does not advance the
* pointer.
* @param {number} n The number of bytes to read.
* @return {number} The bytes interpreted as a signed number.
*/
bitjs.io.ByteStream.prototype.peekSignedNumber = function(n) {
var num = this.peekNumber(n);
var HALF = Math.pow(2, (n * 8) - 1);
var FULL = HALF * 2;
if (num >= HALF) num -= FULL;
return num;
};
/**
* Returns the next n bytes as a signed number and advances the stream pointer.
* @param {number} n The number of bytes to read.
* @return {number} The bytes interpreted as a signed number.
*/
bitjs.io.ByteStream.prototype.readSignedNumber = function(n) {
var num = this.peekSignedNumber(n);
this.ptr += n;
return num;
};
/**
* This returns n bytes as a sub-array, advancing the pointer if movePointers
* is true.
* @param {number} n The number of bytes to read.
* @param {boolean} movePointers Whether to move the pointers.
* @return {Uint8Array} The subarray.
*/
bitjs.io.ByteStream.prototype.peekBytes = function(n, movePointers) {
if (n <= 0 || typeof n != typeof 1) {
return null;
}
var result = this.bytes.subarray(this.ptr, this.ptr + n);
if (movePointers) {
this.ptr += n;
}
return result;
};
/**
* Reads the next n bytes as a sub-array.
* @param {number} n The number of bytes to read.
* @return {Uint8Array} The subarray.
*/
bitjs.io.ByteStream.prototype.readBytes = function(n) {
return this.peekBytes(n, true);
};
/**
* Peeks at the next n bytes as a string but does not advance the pointer.
* @param {number} n The number of bytes to peek at.
* @return {string} The next n bytes as a string.
*/
bitjs.io.ByteStream.prototype.peekString = function(n) {
if (n <= 0 || typeof n != typeof 1) {
return "";
}
var result = "";
for (var p = this.ptr, end = this.ptr + n; p < end; ++p) {
result += String.fromCharCode(this.bytes[p]);
}
return result;
};
/**
* Returns the next n bytes as an ASCII string and advances the stream pointer
* n bytes.
* @param {number} n The number of bytes to read.
* @return {string} The next n bytes as a string.
*/
bitjs.io.ByteStream.prototype.readString = function(n) {
var strToReturn = this.peekString(n);
this.ptr += n;
return strToReturn;
};
})();

12
cps/static/js/kthoom.js
View File

@ -16,7 +16,6 @@
*/
/* global screenfull, bitjs */
if (window.opera) {
window.console.log = function(str) {
opera.postError(str);
@ -160,11 +159,16 @@ function initProgressClick() {
function loadFromArrayBuffer(ab) {
var start = (new Date).getTime();
var h = new Uint8Array(ab, 0, 10);
var pathToBitJS = "../../static/js/";
var pathToBitJS = "../../static/js/archive/";
if (h[0] === 0x52 && h[1] === 0x61 && h[2] === 0x72 && h[3] === 0x21) { //Rar!
unarchiver = new bitjs.archive.Unrarrer(ab, pathToBitJS);
} else if (h[0] === 80 && h[1] === 75) { //PK (Zip)
unarchiver = new bitjs.archive.Unzipper(ab, pathToBitJS);
} else if (h[0] == 255 && h[1] == 216) { // JPEG
// ToDo: check
updateProgress(100);
lastCompletion = 100;
return;
} else { // Try with tar
unarchiver = new bitjs.archive.Untarrer(ab, pathToBitJS);
}
@ -179,6 +183,10 @@ function loadFromArrayBuffer(ab) {
updateProgress(percentage *100);
lastCompletion = percentage * 100;
});
unarchiver.addEventListener(bitjs.archive.UnarchiveEvent.Type.INFO,
function(e) {
// console.log(e.msg); 77 Enable debug output here
});
unarchiver.addEventListener(bitjs.archive.UnarchiveEvent.Type.EXTRACT,
function(e) {
// convert DecompressedFile into a bunch of ImageFiles

209
cps/static/js/untar.js
View File

@ -1,209 +0,0 @@
/**
* untar.js
*
* Licensed under the MIT License
*
* Copyright(c) 2011 Google Inc.
*
* Reference Documentation:
*
* TAR format: http://www.gnu.org/software/automake/manual/tar/Standard.html
*/
// This file expects to be invoked as a Worker (see onmessage below).
importScripts('bytestream.js');
importScripts('archive.js');
const UnarchiveState = {
NOT_STARTED: 0,
UNARCHIVING: 1,
WAITING: 2,
FINISHED: 3,
};
// State - consider putting these into a class.
let unarchiveState = UnarchiveState.NOT_STARTED;
let bytestream = null;
let allLocalFiles = null;
let logToConsole = false;
// Progress variables.
let currentFilename = "";
let currentFileNumber = 0;
let currentBytesUnarchivedInFile = 0;
let currentBytesUnarchived = 0;
let totalUncompressedBytesInArchive = 0;
let totalFilesInArchive = 0;
// Helper functions.
const info = function(str) {
postMessage(new bitjs.archive.UnarchiveInfoEvent(str));
};
const err = function(str) {
postMessage(new bitjs.archive.UnarchiveErrorEvent(str));
};
// Removes all characters from the first zero-byte in the string onwards.
var readCleanString = function(bstr, numBytes) {
var str = bstr.readString(numBytes);
var zIndex = str.indexOf(String.fromCharCode(0));
return zIndex != -1 ? str.substr(0, zIndex) : str;
};
const postProgress = function() {
postMessage(new bitjs.archive.UnarchiveProgressEvent(
currentFilename,
currentFileNumber,
currentBytesUnarchivedInFile,
currentBytesUnarchived,
totalUncompressedBytesInArchive,
totalFilesInArchive,
bytestream.getNumBytesRead(),
));
};
class TarLocalFile {
// takes a ByteStream and parses out the local file information
constructor(bstream) {
this.isValid = false;
let bytesRead = 0;
// Read in the header block
this.name = readCleanString(bstream, 100);
this.mode = readCleanString(bstream, 8);
this.uid = readCleanString(bstream, 8);
this.gid = readCleanString(bstream, 8);
this.size = parseInt(readCleanString(bstream, 12), 8);
this.mtime = readCleanString(bstream, 12);
this.chksum = readCleanString(bstream, 8);
this.typeflag = readCleanString(bstream, 1);
this.linkname = readCleanString(bstream, 100);
this.maybeMagic = readCleanString(bstream, 6);
if (this.maybeMagic == "ustar") {
this.version = readCleanString(bstream, 2);
this.uname = readCleanString(bstream, 32);
this.gname = readCleanString(bstream, 32);
this.devmajor = readCleanString(bstream, 8);
this.devminor = readCleanString(bstream, 8);
this.prefix = readCleanString(bstream, 155);
if (this.prefix.length) {
this.name = this.prefix + this.name;
}
bstream.readBytes(12); // 512 - 500in
} else {
bstream.readBytes(255); // 512 - 257
}
bytesRead += 512;
// Done header, now rest of blocks are the file contents.
this.filename = this.name;
this.fileData = null;
info("Untarring file '" + this.filename + "'");
info(" size = " + this.size);
info(" typeflag = " + this.typeflag);
// A regular file.
if (this.typeflag == 0) {
info(" This is a regular file.");
const sizeInBytes = parseInt(this.size);
this.fileData = new Uint8Array(bstream.readBytes(sizeInBytes));
bytesRead += sizeInBytes;
if (this.name.length > 0 && this.size > 0 && this.fileData && this.fileData.buffer) {
this.isValid = true;
}
// Round up to 512-byte blocks.
const remaining = 512 - bytesRead % 512;
if (remaining > 0 && remaining < 512) {
bstream.readBytes(remaining);
}
} else if (this.typeflag == 5) {
info(" This is a directory.")
}
}
}
const untar = function() {
let bstream = bytestream.tee();
// While we don't encounter an empty block, keep making TarLocalFiles.
while (bstream.peekNumber(4) != 0) {
const oneLocalFile = new TarLocalFile(bstream);
if (oneLocalFile && oneLocalFile.isValid) {
// If we make it to this point and haven't thrown an error, we have successfully
// read in the data for a local file, so we can update the actual bytestream.
bytestream = bstream.tee();
allLocalFiles.push(oneLocalFile);
totalUncompressedBytesInArchive += oneLocalFile.size;
// update progress
currentFilename = oneLocalFile.filename;
currentFileNumber = totalFilesInArchive++;
currentBytesUnarchivedInFile = oneLocalFile.size;
currentBytesUnarchived += oneLocalFile.size;
postMessage(new bitjs.archive.UnarchiveExtractEvent(oneLocalFile));
postProgress();
}
}
totalFilesInArchive = allLocalFiles.length;
postProgress();
bytestream = bstream.tee();
};
// event.data.file has the first ArrayBuffer.
// event.data.bytes has all subsequent ArrayBuffers.
onmessage = function(event) {
const bytes = event.data.file || event.data.bytes;
logToConsole = !!event.data.logToConsole;
// This is the very first time we have been called. Initialize the bytestream.
if (!bytestream) {
bytestream = new bitjs.io.ByteStream(bytes);
} else {
bytestream.push(bytes);
}
if (unarchiveState === UnarchiveState.NOT_STARTED) {
currentFilename = "";
currentFileNumber = 0;
currentBytesUnarchivedInFile = 0;
currentBytesUnarchived = 0;
totalUncompressedBytesInArchive = 0;
totalFilesInArchive = 0;
allLocalFiles = [];
postMessage(new bitjs.archive.UnarchiveStartEvent());
unarchiveState = UnarchiveState.UNARCHIVING;
postProgress();
}
if (unarchiveState === UnarchiveState.UNARCHIVING ||
unarchiveState === UnarchiveState.WAITING) {
try {
untar();
unarchiveState = UnarchiveState.FINISHED;
postMessage(new bitjs.archive.UnarchiveFinishEvent());
} catch (e) {
if (typeof e === 'string' && e.startsWith('Error! Overflowed')) {
// Overrun the buffer.
unarchiveState = UnarchiveState.WAITING;
} else {
console.error('Found an error while untarring');
console.dir(e);
throw e;
}
}
}
};

12
cps/templates/readcbr.html
View File

@ -1,9 +1,9 @@
<!DOCTYPE html>
<html>
<head>
<title>Comic Reader</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Comic Reader</title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
@ -15,7 +15,7 @@
<script src="{{ url_for('static', filename='js/libs/jquery.min.js') }}"></script>
<script src="{{ url_for('static', filename='js/libs/screenfull.min.js') }}"></script>
<script src="{{ url_for('static', filename='js/kthoom.js') }}"></script>
<script src="{{ url_for('static', filename='js/archive.js') }}"></script>
<script src="{{ url_for('static', filename='js/archive/archive.js') }}"></script>
<script>
var updateArrows = function() {
if ($('input[name="direction"]:checked').val() === "0") {
@ -31,17 +31,11 @@
init("{{ url_for('serve_book', book_id=comicfile, book_format=extension) }}");
updateArrows();
}
};
}
</script>
</head>
<body>
<div id="sidebar">
<!--
<div id="panels">
<a id="show-Toc" class="show_view icon-list-1 active" data-view="Toc">TOC</a>
<a id="show-Bookmarks" class="show_view icon-bookmark" data-view="Bookmarks">Bookmarks</a>
</div>
-->
<div id="tocView" class="view" tabindex="-1">
<ul id="thumbnails"></ul>
</div>