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// Learn more about F# at http://fsharp.org
//
// - backup file list
// /%appdata%/mbackup/mbackup-default.list
// /%appdata%/mbackup/user-default.list
// /%appdata%/mbackup/local.list (optional)
// - exclude pattern
// /%appdata%/mbackup/mbackup-default.exclude
// /%appdata%/mbackup/local.exclude (optional)
let ExitBadParam = 1
let ExitTimeout = 2
| [<AltCommandLine("-n")>] Dry_Run
| Remote_User of remoteUser: string
| [<AltCommandLine("-i")>] Itemize_Changes
| Node_Name of nodeName: string
with
interface IArgParserTemplate with
member s.Usage =
match s with
| Dry_Run _ -> "only show what will be done, do not transfer any file"
| Target _ -> "rsync target, could be local dir in Windows or mingw format or remote ssh dir"
| Remote_User _ -> "remote linux user to own the backup files"
| Itemize_Changes _ -> "add -i option to rsync"
| Node_Name _ -> "local node's name, used in remote logging"
| Ssh_Key _ -> "ssh private key, used when backup to remote ssh node"
let appDataRoamingDir = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) |> toMingwPath |> ensureDir
let programDataDirWin = getEnv "PROGRAMDATA" |> ensureWinDir
let programDataDir = toMingwPath programDataDirWin
let appDataLocalDirWin = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) |> ensureWinDir
let appDataLocalDir = appDataLocalDirWin |> toMingwPath
let mbackupInstallDirWin = Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles) |> ensureDir |> fun s -> s + "mbackup"
let mbackupInstallDir = mbackupInstallDirWin |> toMingwPath
getEnvDefault "HOME" (Environment.GetFolderPath(Environment.SpecialFolder.UserProfile))
|> ensureWinDir
let userConfigDirWin = programDataDirWin + "mbackup\\"
let runtimeDirWin = appDataLocalDirWin + "mbackup\\"
let runtimeDir = appDataLocalDir + "mbackup/"
let mbackupConfigFile = userConfigDirWin + "mbackup.txt"
// return true if target is a local dir. local dir can be unix style or windows style.
let isLocalTarget (target: string) =
target.StartsWith "/" || Regex.IsMatch(target, "^[c-z]:", RegexOptions.IgnoreCase)
// expand user file to mingw64 rsync supported path.
// abc -> /cygdrive/c/Users/<user>/abc
// ^Documents -> expand to Documents path.
// ^Downloads -> expand to Downloads path.
// etc
let expandUserFile (fn: string) =
let fn =
let documentsDir = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) |> toMingwPath |> ensureDir
let picturesDir = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures) |> toMingwPath |> ensureDir
let desktopDir = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory) |> toMingwPath |> ensureDir
let fn = Regex.Replace(fn, "^My Documents/", documentsDir, RegexOptions.IgnoreCase)
let fn = Regex.Replace(fn, "^Documents/", documentsDir, RegexOptions.IgnoreCase)
let fn = Regex.Replace(fn, "^我的文档/", documentsDir)
let fn = Regex.Replace(fn, "^文档/", documentsDir)
let fn = Regex.Replace(fn, "^My Pictures/", picturesDir, RegexOptions.IgnoreCase)
let fn = Regex.Replace(fn, "^Pictures/", picturesDir, RegexOptions.IgnoreCase)
let fn = Regex.Replace(fn, "^图片/", picturesDir)
let fn = Regex.Replace(fn, "^Desktop/", desktopDir, RegexOptions.IgnoreCase)
let fn = Regex.Replace(fn, "^桌面/", desktopDir)
fn
if fn.StartsWith("/") then
fn
else
userHome + fn
let generateMbackupList (logger: Logger) =
// TODO how to only regenerate if source file have changed? should I bundle GNU make with mbackup?
// just compare mbackup.list mtime with its source files?
let mbackupDefaultList = userConfigDirWin + "mbackup-default.list"
let mbackupLocalList = userConfigDirWin + "local.list"
let mbackupUserDefaultList = userConfigDirWin + "user-default.list"
let mbackupList = runtimeDirWin + "mbackup.list"
// local functions
let dropEmptyLinesAndComments lines = Seq.filter (fun (line: string) -> not (line.TrimStart().StartsWith("#") || line.TrimEnd().Equals(""))) lines
let readMbackupListFile fn = File.ReadAllLines(fn) |> dropEmptyLinesAndComments
try
let defaultListLines = readMbackupListFile mbackupDefaultList |> Seq.map toMingwPath
let lines = readMbackupListFile mbackupLocalList |> Seq.map toMingwPath
| :? System.IO.FileNotFoundException ->
(true, Seq.empty)
| ex ->
logger.Error "Read mbackupLocalList failed: %s" ex.Message
(false, Seq.empty)
| (false, _) -> failwith "Read mbackup local.list file failed"
| (true, localListLines) ->
let userDefaultListLines = readMbackupListFile mbackupUserDefaultList |> Seq.map expandUserFile
let allLines = Seq.append (Seq.append defaultListLines localListLines) userDefaultListLines
// For mbackup-default.list and local.list, exclude empty lines and comment lines.
// skip and give a warning on non-absolute path.
// For user-default.list, auto prefix user's home dir, auto expand Documents, Downloads etc special folder.
File.WriteAllLines(mbackupList, allLines)
logger.Info "mbackup.list file written: %s" mbackupList
true
| :? System.IO.IOException as ex ->
logger.Error "Read/write file failed: %s %s" ex.Source ex.Message
false
| ex ->
logger.Error "Read/write mbackup list file failed: %s" ex.Message
false
[<EntryPoint>]
let main argv =
let errorHandler = ProcessExiter(colorizer = function ErrorCode.HelpText -> None | _ -> Some ConsoleColor.Red)
let parser = ArgumentParser.Create<CLIArguments>(programName = "mbackup.exe", errorHandler = errorHandler)
let results = parser.Parse argv
let dryRun = results.Contains Dry_Run
let itemizeChanges = results.Contains Itemize_Changes
logger.Info "user config dir: %s" userConfigDirWin
logger.Info "runtime dir: %s" runtimeDirWin
let rsyncCmd: string list = []
let rsyncCmd = appendWhen dryRun rsyncCmd "--dry-run"
let rsyncCmd = appendWhen itemizeChanges rsyncCmd "-i"
let rsyncCmd = List.append rsyncCmd ("-h --stats -togr --delete --delete-excluded --ignore-missing-args".Split [|' '|] |> Array.toList)
let mbackupFile = runtimeDir + "mbackup.list"
if not (generateMbackupList logger) then
failwith "Generate mbackup.list failed"
let rsyncCmd = List.append rsyncCmd [sprintf "--files-from=%s" mbackupFile]
let excludeFile = userConfigDir + "mbackup-default.exclude"
let rsyncCmd = List.append rsyncCmd [sprintf "--exclude-from=%s" excludeFile]
let localExcludeFile = userConfigDir + "local.exclude"
let rsyncCmd = appendWhen (IO.File.Exists localExcludeFile) rsyncCmd (sprintf "--exclude-from=%s" localExcludeFile)
let localLogFile = runtimeDir + "mbackup.log"
let rsyncCmd = List.append rsyncCmd [sprintf "--log-file=%s" localLogFile]
// TODO remove usage of test dir.
let mbackupInstallDirWinTest = "D:\\downloads\\apps\\mbackupTest\\"
let mbackupInstallDirTest = mbackupInstallDirWinTest |> toMingwPath |> ensureDir
let sshExeFile = mbackupInstallDirTest + "rsync-w64/usr/bin/ssh.exe"
let sshPrivateKeyFile = results.GetResult(Ssh_Key, defaultValue = userHome + ".ssh/id_rsa") |> toMingwPath
let rsyncCmd = List.append rsyncCmd [sprintf "-e \"%s -F %s -i %s -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null\"" sshExeFile sshConfigFile sshPrivateKeyFile]
// precedence: command line argument > environment variable > config file
let normalizeTarget target =
if isLocalTarget target then
toMingwPath target
else
target
let backupTargetMaybe =
match results.TryGetResult Target with
| None ->
let mbackupConfig = WellsConfig(mbackupConfigFile)
let backupTargetMaybe = mbackupConfig.GetStr("target")
Option.map normalizeTarget backupTargetMaybe
| Some backupTarget ->
Some (normalizeTarget backupTarget)
| None ->
logger.Error "TARGET is not defined"
ExitBadParam
| Some backupTarget ->
let rsyncCmd =
if not (isLocalTarget backupTarget)
then
let nodeName = results.GetResult(Node_Name, defaultValue = Net.Dns.GetHostName())
let remoteLogFile = sprintf "/var/log/mbackup/%s.log" nodeName
let remoteUser = results.GetResult (Remote_User, defaultValue = Environment.UserName)
let rsyncCmd = List.append rsyncCmd [sprintf "--remote-option=--log-file=%s" remoteLogFile]
let rsyncCmd = List.append rsyncCmd [sprintf "--chown=%s:%s" remoteUser remoteUser]
rsyncCmd
rsyncCmd
let rsyncCmd = List.append rsyncCmd ["/"]
let rsyncCmd = List.append rsyncCmd [backupTarget]
let rsyncArgs = rsyncCmd |> String.concat " "
let rsyncExe = mbackupInstallDirWinTest + "rsync-w64\\usr\\bin\\rsync.exe"
let echoExe = "C:\\Program Files\\Git\\usr\\bin\\echo.exe"
try
IO.Directory.CreateDirectory(runtimeDir) |> ignore
IO.Directory.CreateDirectory(userConfigDir) |> ignore
let proc = Process.Start(rsyncExe, rsyncArgs)
logger.Info "Note: if you run the following rsync command yourself, make sure the generated file list (%s) is up-to-date.\n%s" mbackupFile (rsyncExe + " " + rsyncArgs)
if proc.WaitForExit Int32.MaxValue then
logger.Info "mbackup exit"
proc.ExitCode
else
logger.Error "mbackup timed out while waiting for rsync to complete"
ExitTimeout
with
| :? System.IO.IOException as ex ->
logger.Error "IO Error: %s %s" ex.Source ex.Message
ExitIOError
| ex ->
logger.Error "Unexpected Error: %s" ex.Message
ExitIOError