minimal wp/quest editing works, need refactor to better form

saveCharacter.php

@@ -0,0 +1,138 @@
+<?php
+
+error_reporting(E_ERROR | E_PARSE);
+set_time_limit(-1);
+ini_set('max_input_time', '-1');
+ini_set('max_execution_time', '0');
+session_start();
+ob_start();
+
+define('DB_FILE', $_SESSION['modname'] . ".db");
+
+require_once './config.php';
+require_once './_pdo.php';
+
+require_once "./src/D2Functions.php";
+require_once "./src/D2Database.php";
+require_once './src/D2Files.php';
+require_once './src/D2TxtParser.php';
+require_once './src/D2ItemDesc.php';
+require_once  './src/D2SaveFile.php';
+require_once './src/D2SaveFileStructureData.php';
+
+$dStruct = new D2SaveFileStructureData();
+
+
+$p = $_POST;
+
+// ddump($p);
+
+foreach($p['quest'] as $k => $v) {
+    $q[$k] = ($dStruct->_qNorm[$k]);
+}
+
+foreach($p['wp'] as $k => $v) {
+    $w[$k] = ($dStruct->_qNorm[$k]);
+}
+
+
+$filePath = $p['filePath'];
+$filePath = str_replace("\\", "\\\\", $filePath);
+$fp = fopen($filePath, "rb+");
+
+// delete old checksum at offset 0x0C - byte 12
+fseek($fp, 12);
+// (I) unsigned integer (machine dependent size and byte order)
+fwrite($fp, pack('I', 0)); // produces 4 bytes
+
+// edit quests which are checked, to Just finished FE FF
+foreach ($q as $k => $v) {
+    fseek($fp, $v);
+    fwrite($fp, pack('C', 0xFE));
+    fseek($fp, $v+1);
+    fwrite($fp, pack('C', 0xFF));
+}
+
+if ($p['wp_all'] == "1") {
+    fseek($fp, 643);
+    fwrite($fp, pack('C', 0xFF));
+    fseek($fp, 644);
+    fwrite($fp, pack('C', 0xFF));    
+    fseek($fp, 645);
+    fwrite($fp, pack('C', 0xFF));
+    fseek($fp, 646);
+    fwrite($fp, pack('C', 0xFF));
+    fseek($fp, 647);
+    fwrite($fp, pack('C', 0x7F));    
+    
+    fseek($fp, 667);
+    fwrite($fp, pack('C', 0xFF));
+    fseek($fp, 668);
+    fwrite($fp, pack('C', 0xFF));    
+    fseek($fp, 669);
+    fwrite($fp, pack('C', 0xFF));
+    fseek($fp, 670);
+    fwrite($fp, pack('C', 0xFF));
+    fseek($fp, 671);
+    fwrite($fp, pack('C', 0x7F)); 
+    
+    fseek($fp, 691);
+    fwrite($fp, pack('C', 0xFF));
+    fseek($fp, 692);
+    fwrite($fp, pack('C', 0xFF));    
+    fseek($fp, 693);
+    fwrite($fp, pack('C', 0xFF));
+    fseek($fp, 694);
+    fwrite($fp, pack('C', 0xFF));
+    fseek($fp, 695);
+    fwrite($fp, pack('C', 0x7F)); 
+    
+} 
+    else if ($p['wp_all'] == "0") 
+{
+    fseek($fp, 643);
+    fwrite($fp, pack('C', 0x00));
+    fseek($fp, 644);
+    fwrite($fp, pack('C', 0x00));    
+    fseek($fp, 645);
+    fwrite($fp, pack('C', 0x00));
+    fseek($fp, 646);
+    fwrite($fp, pack('C', 0x00));
+    fseek($fp, 647);
+    fwrite($fp, pack('C', 0x00));    
+    
+    fseek($fp, 667);
+    fwrite($fp, pack('C', 0x00));
+    fseek($fp, 668);
+    fwrite($fp, pack('C', 0x00));    
+    fseek($fp, 669);
+    fwrite($fp, pack('C', 0x00));
+    fseek($fp, 670);
+    fwrite($fp, pack('C', 0x00));
+    fseek($fp, 671);
+    fwrite($fp, pack('C', 0x00)); 
+    
+    fseek($fp, 691);
+    fwrite($fp, pack('C', 0x00));
+    fseek($fp, 692);
+    fwrite($fp, pack('C', 0x00));    
+    fseek($fp, 693);
+    fwrite($fp, pack('C', 0x00));
+    fseek($fp, 694);
+    fwrite($fp, pack('C', 0x00));
+    fseek($fp, 695);
+    fwrite($fp, pack('C', 0x00));    
+}
+
+
+$checksum = swapEndianness(shell_exec("bin\d2scs.exe \"$filePath\""));
+
+// write NEW checksum at offset 0x0C - byte 12
+fseek($fp, 12);
+// (I) unsigned integer (machine dependent size and byte order)
+fwrite($fp, pack('H*', $checksum)); // produces 4 bytes
+
+
+fclose($fp);
+
+header('Location: /');