shadow1ng/fscan · error

%s [invalid_file_type]

Error message

%s [invalid_file_type]

What it means

File-type guard in ldpreload Scan: the configured target file exists but fails p.isValidFile, i.e. it is not a valid shared object (.so) file, so it cannot be used for LD_PRELOAD persistence. The plugin returns a failed Result carrying the i18n invalid_file_type message, with ldpreload_so_required printed to the output buffer.

Source

Thrown at plugins/local/ldpreload.go:76

	}

	// 检查目标文件是否存在
	if _, err := os.Stat(targetFile); os.IsNotExist(err) {
		output.WriteString(i18n.Tr("target_file_not_exist", targetFile) + "\n")
		return &plugins.Result{
			Success: false,
			Output:  output.String(),
			Error:   err,
		}
	}

	// 检查文件类型
	if !p.isValidFile(targetFile) {
		output.WriteString(i18n.Tr("ldpreload_so_required", targetFile) + "\n")
		return &plugins.Result{
			Success: false,
			Output:  output.String(),
			Error:   fmt.Errorf("%s", i18n.GetText("invalid_file_type")),
		}
	}

	output.WriteString(i18n.GetText("ldpreload_header") + "\n")
	output.WriteString(i18n.Tr("local_target_file", targetFile) + "\n")
	output.WriteString(i18n.Tr("local_platform", runtime.GOOS) + "\n\n")

	var successCount int

	// 1. 复制文件到系统目录
	systemPath, err := p.copyToSystemPath(targetFile)
	if err != nil {
		output.WriteString(i18n.Tr("ldpreload_copy_system_failed", err) + "\n")
	} else {
		output.WriteString(i18n.Tr("file_copied_to", systemPath) + "\n")
		successCount++
	}

View on GitHub (pinned to 95cc12e753)

Solutions

1. Provide a correctly built ELF shared library compiled for the target arch
2. Re-upload the payload if it was corrupted in transit
3. Verify with 'file' that the artifact is a shared object

When it happens

Trigger: Thrown at plugins/local/ldpreload.go:76 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of shadow1ng/fscan@95cc12e753 (2026-09-06). Data as JSON: /api/errors/0c4bc47f1e3d80ac. Report an issue: GitHub.