mirror of
https://github.com/syncthing/syncthing.git
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90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
// Copyright (C) 2015 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at http://mozilla.org/MPL/2.0/.
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package versioner
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import (
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"errors"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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)
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func init() {
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// Register the constructor for this type of versioner with the name "external"
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Factories["external"] = NewExternal
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}
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// The type holds our configuration
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type External struct {
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command string
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folderPath string
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}
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// The constructor function takes a map of parameters and creates the type.
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func NewExternal(folderID, folderPath string, params map[string]string) Versioner {
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command := params["command"]
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s := External{
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command: command,
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folderPath: folderPath,
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}
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if debug {
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l.Debugf("instantiated %#v", s)
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}
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return s
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}
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// Move away the named file to a version archive. If this function returns
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// nil, the named file does not exist any more (has been archived).
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func (v External) Archive(filePath string) error {
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_, err := os.Lstat(filePath)
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if os.IsNotExist(err) {
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if debug {
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l.Debugln("not archiving nonexistent file", filePath)
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}
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return nil
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} else if err != nil {
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return err
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}
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if debug {
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l.Debugln("archiving", filePath)
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}
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inFolderPath, err := filepath.Rel(v.folderPath, filePath)
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if err != nil {
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return err
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}
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if v.command == "" {
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return errors.New("Versioner: command is empty, please enter a valid command")
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}
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cmd := exec.Command(v.command, v.folderPath, inFolderPath)
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env := os.Environ()
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// filter STGUIAUTH and STGUIAPIKEY from environment variables
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filteredEnv := []string{}
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for _, x := range env {
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if !strings.HasPrefix(x, "STGUIAUTH=") && !strings.HasPrefix(x, "STGUIAPIKEY=") {
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filteredEnv = append(filteredEnv, x)
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}
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}
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cmd.Env = filteredEnv
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err = cmd.Run()
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if err != nil {
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return err
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}
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// return error if the file was not removed
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if _, err = os.Lstat(filePath); os.IsNotExist(err) {
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return nil
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}
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return errors.New("Versioner: file was not removed by external script")
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}
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