77 lines
1.5 KiB
Go
77 lines
1.5 KiB
Go
// Copyright 2018 Mikhail Klementev. All rights reserved.
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// Use of this source code is governed by a AGPLv3 license
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// (or later) that can be found in the LICENSE file.
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package main
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import (
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"io"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"os/exec"
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"os/user"
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)
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// inspired by Edd Turtle code
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func downloadFile(filepath string, url string) (err error) {
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out, err := os.Create(filepath)
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if err != nil {
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return
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}
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defer out.Close()
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resp, err := http.Get(url)
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if err != nil {
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return
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}
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defer resp.Body.Close()
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_, err = io.Copy(out, resp.Body)
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return
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}
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func unpackTar(archive, destination string) (err error) {
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cmd := exec.Command("tar", "xf", archive)
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cmd.Dir = destination + "/"
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rawOutput, err := cmd.CombinedOutput()
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if err != nil {
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// I don't like when some errors printed inside
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// So if you know way to do it better - FIXME please
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log.Println("Unpack images error:", string(rawOutput), err)
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return
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}
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return
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}
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func bootstrapHandler() (err error) {
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usr, err := user.Current()
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if err != nil {
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return
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}
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imagesPath := usr.HomeDir + "/.out-of-tree/images/"
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os.MkdirAll(imagesPath, os.ModePerm)
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tmp, err := ioutil.TempDir("/tmp/", "out-of-tree_")
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if err != nil {
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log.Println("Temporary directory creation error:", err)
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return
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}
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defer os.RemoveAll(tmp)
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imagesArchive := tmp + "/images.tar.gz"
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err = downloadFile(imagesArchive, imagesURL)
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if err != nil {
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log.Println("Download file error:", err)
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return
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}
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err = unpackTar(imagesArchive, imagesPath)
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return
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}
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