/// <summary>
/// 通用（特征码替换）
/// </summary>
public void CommonPatch()
{
if (FileCommonModifyInfo == null)
{
throw new Exception("特征码替换：缺失对应特征码信息");
}
// 1. 拷贝一份临时文件
File.Copy(FilePath, fileReplacedPath, true);
// 2. 读取整个临时文件
byte[] fileByteArray = File.ReadAllBytes(fileReplacedPath);
// 3. 循环查找所有未替换的替换点
int needReplaceNum = 0;
List <Change> changes = new List <Change>();
foreach (ReplacePattern pattern in FileCommonModifyInfo.ReplacePatterns)
{
int[] indexs = FuzzyMatcher.MatchNotReplaced(fileByteArray, pattern.Search, pattern.Replace);
if (indexs.Length == 1)
{
needReplaceNum++;
changes.Add(new Change(indexs[0], pattern.Replace));
}
}
// 判断是否可以使用特征码替换的方式
if (needReplaceNum == 0)
{
// 查找所有替换点
int matchNum = 0;
foreach (ReplacePattern pattern in FileCommonModifyInfo.ReplacePatterns)
{
int[] indexs = FuzzyMatcher.MatchAll(fileByteArray, pattern.Search);
if (indexs.Length == 1)
{
matchNum++;
}
}
if (matchNum == FileCommonModifyInfo.ReplacePatterns.Count)
{
throw new BusinessException("already_replace", "特征码替换：当前应用已经防撤回");
}
else
{
throw new BusinessException("not_found_to_replace", "特征码替换：没有搜索到撤回的相关特征");
}
}
else if (needReplaceNum == FileCommonModifyInfo.ReplacePatterns.Count)
{
// 正常情况下每个替换点都能找到
// 3. 替换所有未替换的替换点
FileUtil.EditMultiHex(fileReplacedPath, changes);
// 4. 覆盖特征码替换后的文件
File.Copy(fileReplacedPath, FilePath, true);
}
else
{
throw new BusinessException("found_num_err", "特征码替换：可替换的特征数不正确");
}
}
private void btnSearch_Click(object sender, EventArgs e)
{
byte[] fileByteArray = File.ReadAllBytes(@"");
byte[] searchBytes = ByteUtil.HexStringToByteArray("1C E9 9D 00 00 00 8B 45 E8 8D 55 EC 52 89 5D EC 68 3F 3F 3F 54 8B 08 50 FF 51 78 85 C0 79 2D 8D 45 0C C7 45 0C");
byte[] replaceBytes = ByteUtil.HexStringToByteArray("1C E9 9D 00 00 00 8B 45 E8 8D 55 EC 52 89 5D EC EB 09 90 90 90 8B 08 50 FF 51 78 85 C0 79 2D 8D 45 0C C7 45 0C");
//int[] indexs = FuzzyMatcher.MatchAll(fileByteArray, searchBytes);
int[] indexs = FuzzyMatcher.MatchNotReplaced(fileByteArray, searchBytes, replaceBytes);
txtInfo.AppendText("查找结果位置:" + string.Join(",", indexs) + Environment.NewLine);
// 371130
List <Change> changes = ComputChanges(indexs, searchBytes, replaceBytes);
foreach (Change c in changes)
{
txtInfo.AppendText("替换位置:" + Convert.ToString(c.Position, 16) + " 替换内容:" + ByteUtil.ByteArrayToHexString(c.Content) + Environment.NewLine);
}
}