From 16eb41e6c3a9a25113cd0b710a5fb204ccd535fb Mon Sep 17 00:00:00 2001
From: Pleshevskiy <pleshevskiy@gmail.com>
Date: Thu, 1 Oct 2015 20:29:56 +0400
Subject: [PATCH] release encoder and decoder

---
 README.md  |   7 +++
 decode.php |  79 +++++++++++++++++++++++++
 encode.php | 165 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 251 insertions(+)
 create mode 100644 decode.php
 create mode 100644 encode.php

diff --git a/README.md b/README.md
index b19a9cd..f324fb7 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,9 @@
 # jjcrypto
 jjcrypto for php
+
+## HOW USE
+### encoding
+```php encode.php /path/to/file.js```
+
+### decoding
+```php decode.php /path/to/encoded/file.js.jj```
\ No newline at end of file
diff --git a/decode.php b/decode.php
new file mode 100644
index 0000000..cc07326
--- /dev/null
+++ b/decode.php
@@ -0,0 +1,79 @@
+<?php
+
+// Decoder wrapper
+$start = '$=~[];$={___:++$,$$$$:(![]+"")[$],__$:++$,$_$_:(![]+"")[$],_$_:++$,$_$$:({}+"")[$],$$_$:($[$]+"")[$],_$$:++$,$$$_:(!""+"")[$],$__:++$,$_$:++$,$$__:({}+"")[$],$$_:++$,$$$:++$,$___:++$,$__$:++$};$.$_=($.$_=$+"")[$.$_$]+($._$=$.$_[$.__$])+($.$$=($.$+"")[$.__$])+((!$)+"")[$._$$]+($.__=$.$_[$.$$_])+($.$=(!""+"")[$.__$])+($._=(!""+"")[$._$_])+$.$_[$.$_$]+$.__+$._$+$.$;$.$$=$.$+(!""+"")[$._$$]+$.__+$._+$.$+$.$$;$.$=($.___)[$.$_][$.$_];$.$($.$($.$$+"\""+';
+$end = '+"\"")())();';
+
+
+if (!isset($argv[1])) {
+	die("Decoder required encoded file");
+}
+
+// Read file
+$r = file_get_contents($argv[1]);
+
+// Replace decoder wrapper
+$r = str_replace($start, "", $r);
+$r = str_replace($end, "", $r);
+
+// Template decoder
+// from largest char length to smallest
+$subst = array(
+	array('$.$___','8'),
+	array('$.$__$','9'),
+	array('$.$_$_','a'),
+	array('$.$_$$','b'),
+	array('$.$$__','c'),
+	array('$.$$_$','d'),
+	array('$.$$$$','f'),
+	array('$.$$$_','e'),
+	array('$.___','0'),
+	array('$.__$','1'),
+	array('$._$_','2'),
+	array('$._$$','3'),
+	array('$.$__','4'),
+	array('$.$_$','5'),
+	array('$.$$_','6'),
+	array('$.$$$','7'),
+	array('$.$_', 'c'),
+	array('$._$', 'o'),
+	array('$.$$', 'n'),
+	array('$.__', 't'),
+	array('$.$', 'r'),
+	array('$._', 'u'),
+	array('"\\\\"' , '\\'),
+	array('"+"', '%%%%'), // tmp
+	array('+', ""),
+	array('%%%%', "+")
+);
+
+// replace by template
+foreach ($subst as $s) {
+	$r = str_replace($s[0], $s[1], $r);
+}
+
+echo "$r\n";
+
+// replace my quotes
+$r = preg_replace('/([^\\\\])"([^"]+)"/', '${1}${2}', $r);
+
+// ASCII decode
+preg_match_all('/\\\\(\d{3})/', $r, $matches);
+for ($i = 0; $i < count($matches[1]); $i++) {
+	// convert octal to decimal
+	$octal = base_convert($matches[1][$i], 8, 10);
+	// get character and replace
+	$r = str_replace($matches[0][$i], chr($octal), $r);
+}
+
+// UTF-8 decode
+preg_match_all('/(\\\\u\w{4})/', $r, $matches);
+for ($i = 0; $i < count($matches[1]); $i++) {
+	// get character and replace
+	$r = str_replace($matches[0][$i], json_decode('"'.$matches[1][$i].'"'), $r);
+}
+
+// show decoded code
+echo $r;
+// if need save file
+// file_put_contents(substr($argv[1], 0, -3), $r);
\ No newline at end of file
diff --git a/encode.php b/encode.php
new file mode 100644
index 0000000..390c48e
--- /dev/null
+++ b/encode.php
@@ -0,0 +1,165 @@
+<?php
+
+if (!isset($argv[1])) {
+	die("Script required url to file");
+}
+
+
+// support method for generate template
+function getCharKey($i, $maxPow) {
+	$resultKey = "";
+	for ($j = $maxPow; $j >= 0; $j--) {
+		// i love bitmasks
+		$resultKey .= $i & pow(2, $j) ? "$" : "_";
+	}
+	return $resultKey;
+}
+
+// check utf-8 character
+function isUtf8($char) {
+	return mb_detect_encoding($char) == "UTF-8";
+}
+
+// str_split bad working for utf-8...
+// it's best alternative
+function mbStringToArray($string) {
+	$strlen = mb_strlen($string);
+	while ($strlen) {
+		$array[] = mb_substr($string, 0, 1, "UTF-8");
+		$string = mb_substr($string, 1, $strlen, "UTF-8");
+		$strlen = mb_strlen($string);
+	}
+	return $array;
+}
+
+// encode char
+function encodeChar($char) {
+	// get template
+	global $substr;
+	
+	// write prefix for char code
+	$result = '"\\\\"';
+
+	// if character is utf-8
+	if (isUtf8($char)) {
+		// get utf-8 code without quotes and slash
+		$code = substr(json_encode($char), 2, -1);
+	} else {
+		// convert decimal to octal
+		$code = base_convert(ord($char), 10, 8);
+		// fix code if digist < 3
+		$code = str_pad($code, 3, 0, STR_PAD_LEFT) . '';
+	}
+
+	// convert string to array
+	$digits = str_split($code);
+	for ($i = 0; $i < count($digits); $i++) {
+		// encode code
+		$result .= '+$.' . array_search($digits[$i], $substr);
+	}
+	return $result;
+}
+
+// its characters need as it
+$ignoreChars = '!"#$%&()*+,-./:;<>=?@[]^_`{|}~\'';
+
+// some characters for decoding
+$substr = array(
+	'$_$_' => 'a',
+	'$_$$' => 'b',
+	'$$__' => 'c',
+	'$$_$' => 'd',
+	'$$$_' => 'e',
+	'$$$$' => 'f',
+	'_' => 'u',
+);
+
+// add to template digits
+$i = -1;
+while (++$i < 10) {
+	$key = getCharKey($i, $i <= 7 ? 2 : 3);
+	$substr[$key] = $i;
+}
+
+
+/**
+ * START ENCODING!
+ */
+$scriptText = file_get_contents($argv[1]);
+if (!$scriptText) {
+	die("File not found\n");
+}
+
+// support variable for ignored charaters
+$prevIgnored = false;
+// for encoded text (result)
+$encodedScript = "";
+// split text
+$chars = mbStringToArray($scriptText, 0, 1, "UTF-8");
+// var_dump($chars);
+
+// encoded each character
+for ($i = 0; $i < count($chars); $i++) {
+	// get character
+	$ch = $chars[$i];
+
+	// if character is ignored
+	if (strpos($ignoreChars, $ch) != false) {
+		// if not first character 
+		// and prev element not ignored
+		if ($i && !$prevIgnored) {
+			// open quotes
+			$encodedScript .= '+"';
+		}
+
+		// if character is quotes
+		if ($ch == '"') {
+			// need mirrors
+			$encodedScript .= "\\\\\\";
+		}
+
+		// else rewrite character
+		$encodedScript .= $ch;
+		// mark as ignored
+		$prevIgnored = true;
+		// get next character
+		continue;
+	} else if ($prevIgnored) {
+		// close quotes if character not ignored
+		// and if prev character is ignored
+		$encodedScript .= '"';
+	}
+
+	// add plus
+	if ($i) {
+		$encodedScript .= '+';
+	}
+
+	// search encoded character in template
+	$ech = array_search($ch, $substr);
+
+	// bug... if array_search is false then return "___"
+	if ($ech == "___" ? $ch == '0' : $ech != false) {
+		// add $. for decoder
+		$encodedScript .= '$.'.$ech;
+	} else {
+		// encode charater ASCII \xxx or UTF-8 \uxxxx
+		$encodedScript .= encodeChar($ch);
+	}
+
+	$prevIgnored = false;
+}
+
+if ($prevIgnored) {
+	$encodedScript .= '"';
+}
+
+// Decode wrapper
+$start = '$=~[];$={___:++$,$$$$:(![]+"")[$],__$:++$,$_$_:(![]+"")[$],_$_:++$,$_$$:({}+"")[$],$$_$:($[$]+"")[$],_$$:++$,$$$_:(!""+"")[$],$__:++$,$_$:++$,$$__:({}+"")[$],$$_:++$,$$$:++$,$___:++$,$__$:++$};$.$_=($.$_=$+"")[$.$_$]+($._$=$.$_[$.__$])+($.$$=($.$+"")[$.__$])+((!$)+"")[$._$$]+($.__=$.$_[$.$$_])+($.$=(!""+"")[$.__$])+($._=(!""+"")[$._$_])+$.$_[$.$_$]+$.__+$._$+$.$;$.$$=$.$+(!""+"")[$._$$]+$.__+$._+$.$+$.$$;$.$=($.___)[$.$_][$.$_];$.$($.$($.$$+"\""+';
+$end = '+"\"")())();';
+
+// wrap encoded script
+$encodedScript = $start.$encodedScript.$end;
+
+// write to file with ext .jj
+file_put_contents($argv[1].'.jj', $encodedScript);
\ No newline at end of file