huiyadanli/RevokeMsgPatcher · error · BusinessException

maybe_modified

maybe_modified

Error message

程序支持此文件版本： {editor.FileName} - {editor.FileVersion}。但是文件校验不通过，请确认是否使用过其他补丁程序！

What it means

The file's SHA1 matched neither before nor after, but its version DID match a known ModifyInfo. AppModifier throws BusinessException('maybe_modified'): the version is supported yet the bytes differ, implying another tool (or manual edit) altered the DLL.

Source

Thrown at RevokeMsgPatcher/Modifier/AppModifier.cs:375

                            replacePatterns = editor.FileCommonModifyInfo.ReplacePatterns.Where(info => categories.Contains(info.Category)).ToList();
                        }

                        // 如果能顺利得到 TargetChanges 不报错则可以使用特征替换方式
                        editor.TargetChanges = ModifyFinder.FindChanges(editor.FilePath, replacePatterns);
                        continue;
                    }
                    else
                    {
                        // SHA1不匹配，连版本也不匹配，说明完全不支持
                        if (matchingVersion == null)
                        {
                            throw new BusinessException("not_support", $"不支持的文件：名称 {editor.FileName} 版本 {editor.FileVersion}！");
                        }

                        // SHA1不匹配，但是版本匹配，可能dll已经被其他补丁程序修改过
                        if (matchingVersion != null)
                        {
                            throw new BusinessException("maybe_modified", $"程序支持此文件版本： {editor.FileName} - {editor.FileVersion}。但是文件校验不通过，请确认是否使用过其他补丁程序！");
                        }
                    }
                }
            }
        }

        /// <summary>
        /// c.根据补丁信息，安装补丁
        /// 两种打补丁的方式：精准（指定位置替换）、通用（特征码替换）
        /// </summary>
        /// <returns></returns>
        public bool Patch()
        {
            // 首先验证文件修改器是否没问题
            if (editors.Count == 0)
            {
                throw new Exception("补丁安装失败，原因：无对应的文件修改器");
            }

View on GitHub (pinned to 89cbbb3f0c)

Solutions

Restore a clean/original DLL of that version (from backup or a fresh install).
Remove other patchers' changes, then retry.

Defensive patterns

Strategy: try-catch

Type guard

static bool IsBusinessException(Exception e, string code) => e is BusinessException b && b.ErrorCode == code;

static bool IsMaybeModified(Exception e) => IsBusinessException(e, "maybe_modified");

Try / catch

try
{
    modifier.ValidateAndFindModifyInfo(categories);
}
catch (BusinessException ex) when (ex.ErrorCode == "maybe_modified")
{
    MessageBox.Show("文件版本受支持但校验不通过，请还原原始文件后重试。");
}

Prevention

Avoid using competing patchers that alter the target DLL.
Restore a clean DLL of the supported version before retrying.
Filter by ErrorCode 'maybe_modified' to guide the user toward a clean restore.

When it happens

Trigger: A DLL of a supported version whose contents were changed outside this tool: a competing patcher, a manual hex edit, or a partial/corrupt write.

Common situations: Used a competing anti-recall/multi-open tool first; the DLL was patched and not restored.

Related errors

AI-assisted analysis of huiyadanli/RevokeMsgPatcher@89cbbb3f0c (2026-08-13). Data as JSON: /api/errors/7ed796c83a2bfb69. Report an issue: GitHub.