invoker.php: move some functions to common.php

smx-smx · Apr 19, 2024 · 9a7f5cc · 9a7f5cc
1 parent b4510e4
commit 9a7f5cc
Show file tree

Hide file tree

Showing 2 changed files with 63 additions and 56 deletions.
diff --git a/common.php b/common.php
@@ -0,0 +1,62 @@
+<?php
+/**
+ * Copyright (C) 2024 Stefano Moioli <[email protected]>
+ **/
+
+use FFI\CData;
+
+define('CHACHA20_KEY_SIZE', 32);
+define('CHACHA20_IV_SIZE', 16);
+define('SHA256_DIGEST_SIZE', 32);
+define('ED448_PUBKEY_SIZE', 57);
+
+define('OP_ENCRYPT', 0);
+define('OP_DECRYPT', 1);
+
+function path_combine(string ...$parts){
+    return implode(DIRECTORY_SEPARATOR, $parts);
+}
+
+function error(string $msg){
+    print("ERROR: {$msg}\n");
+}
+
+function say(string $msg){
+    if(empty($msg)) print("\n");
+    else print("[+] {$msg}\n");
+}
+
+function secret_data_crypto(string $data, int $op){
+    $zero_data = str_repeat("\x00", CHACHA20_KEY_SIZE + CHACHA20_IV_SIZE);
+    $zero_key = str_repeat("\x00", CHACHA20_KEY_SIZE);
+    $zero_iv = str_repeat("\x00", CHACHA20_IV_SIZE);
+    // get actual key,iv by decrypting zeros
+    $decrypted = openssl_decrypt($zero_data, 'chacha20', $zero_key, OPENSSL_RAW_DATA, $zero_iv);
+
+    $key = substr($decrypted, 0, CHACHA20_KEY_SIZE);
+    $iv = substr($decrypted, CHACHA20_KEY_SIZE, CHACHA20_IV_SIZE);
+    return ($op == OP_ENCRYPT)
+        ? openssl_encrypt($data, 'chacha20', $key, OPENSSL_RAW_DATA, $iv)
+        : openssl_decrypt($data, 'chacha20', $key, OPENSSL_RAW_DATA, $iv);
+}
+
+function encode_data(int $size, int $data){
+    switch($size){
+        case 1: return pack('C', $data);
+        case 2: return pack('v', $data);
+        case 4: return pack('V', $data);
+        case 8: return pack('P', $data);
+        default: throw new InvalidArgumentException("unsupported size {$size}");
+    }
+}
+
+function make_array(int $size){
+    $uchar = FFI::type('uint8_t');
+    $arrT = FFI::arrayType($uchar, [$size]);
+    return FFI::new($arrT);
+}
+
+function cdata_bytes(CData $object){
+    $size = FFI::sizeof($object);
+    return FFI::string(FFI::addr($object), $size);
+}
diff --git a/invoker.php b/invoker.php
@@ -13,62 +13,7 @@
 use phpseclib3\Math\BigInteger;
 
 require_once __DIR__ . '/vendor/autoload.php';
-
-define('CHACHA20_KEY_SIZE', 32);
-define('CHACHA20_IV_SIZE', 16);
-define('SHA256_DIGEST_SIZE', 32);
-define('ED448_PUBKEY_SIZE', 57);
-
-define('OP_ENCRYPT', 0);
-define('OP_DECRYPT', 1);
-
-function path_combine(string ...$parts){
-    return implode(DIRECTORY_SEPARATOR, $parts);
-}
-
-function error(string $msg){
-    print("ERROR: {$msg}\n");
-}
-
-function say(string $msg){
-    if(empty($msg)) print("\n");
-    else print("[+] {$msg}\n");
-}
-
-function secret_data_crypto(string $data, int $op){
-    $zero_data = str_repeat("\x00", CHACHA20_KEY_SIZE + CHACHA20_IV_SIZE);
-    $zero_key = str_repeat("\x00", CHACHA20_KEY_SIZE);
-    $zero_iv = str_repeat("\x00", CHACHA20_IV_SIZE);
-    // get actual key,iv by decrypting zeros
-    $decrypted = openssl_decrypt($zero_data, 'chacha20', $zero_key, OPENSSL_RAW_DATA, $zero_iv);
-
-    $key = substr($decrypted, 0, CHACHA20_KEY_SIZE);
-    $iv = substr($decrypted, CHACHA20_KEY_SIZE, CHACHA20_IV_SIZE);
-    return ($op == OP_ENCRYPT)
-        ? openssl_encrypt($data, 'chacha20', $key, OPENSSL_RAW_DATA, $iv)
-        : openssl_decrypt($data, 'chacha20', $key, OPENSSL_RAW_DATA, $iv);
-}
-
-function encode_data(int $size, int $data){
-    switch($size){
-        case 1: return pack('C', $data);
-        case 2: return pack('v', $data);
-        case 4: return pack('V', $data);
-        case 8: return pack('P', $data);
-        default: throw new InvalidArgumentException("unsupported size {$size}");
-    }
-}
-
-function make_array(int $size){
-    $uchar = FFI::type('uint8_t');
-    $arrT = FFI::arrayType($uchar, [$size]);
-    return FFI::new($arrT);
-}
-
-function cdata_bytes(CData $object){
-    $size = FFI::sizeof($object);
-    return FFI::string(FFI::addr($object), $size);
-}
+require_once __DIR__ . '/common.php';
 
 class Invoker {
     private FFI $ffi;