350 lines
8.4 KiB
Go
350 lines
8.4 KiB
Go
//go:build !windows
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// +build !windows
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package updater
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import (
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"archive/tar"
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"bytes"
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"compress/gzip"
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"crypto/sha256"
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"net/http/httptest"
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"os"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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"testing"
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"github.com/stretchr/testify/require"
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)
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var testFilePath = filepath.Join(os.TempDir(), "test")
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func respondWithJSON(w http.ResponseWriter, v interface{}, status int) {
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data, _ := json.Marshal(v)
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(status)
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w.Write(data)
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}
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func respondWithData(w http.ResponseWriter, b []byte, status int) {
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w.Header().Set("Content-Type", "application/octet-stream")
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w.WriteHeader(status)
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w.Write(b)
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}
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const mostRecentVersion = "2021.2.5"
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const mostRecentBetaVersion = "2021.3.0"
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const knownBuggyVersion = "2020.12.0"
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const expectedUserMsg = "This message is expected when running a known buggy version"
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func updateHandler(w http.ResponseWriter, r *http.Request) {
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version := mostRecentVersion
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host := fmt.Sprintf("http://%s", r.Host)
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url := host + "/download"
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query := r.URL.Query()
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if query.Get(BetaKeyName) == "true" {
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version = mostRecentBetaVersion
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url = host + "/beta"
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}
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requestedVersion := query.Get(VersionKeyName)
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if requestedVersion != "" {
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version = requestedVersion
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url = fmt.Sprintf("%s?version=%s", url, requestedVersion)
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}
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if query.Get(ArchitectureKeyName) != runtime.GOARCH || query.Get(OSKeyName) != runtime.GOOS {
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respondWithJSON(w, VersionResponse{Error: "unsupported os and architecture"}, http.StatusBadRequest)
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return
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}
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h := sha256.New()
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fmt.Fprint(h, version)
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checksum := fmt.Sprintf("%x", h.Sum(nil))
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var userMessage = ""
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if query.Get(ClientVersionName) == knownBuggyVersion {
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userMessage = expectedUserMsg
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}
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shouldUpdate := requestedVersion != "" || IsNewerVersion(query.Get(ClientVersionName), version)
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v := VersionResponse{
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URL: url, Version: version, Checksum: checksum, UserMessage: userMessage, ShouldUpdate: shouldUpdate,
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}
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respondWithJSON(w, v, http.StatusOK)
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}
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func gzipUpdateHandler(w http.ResponseWriter, r *http.Request) {
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log.Println("got a request!")
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version := "2020.09.02"
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h := sha256.New()
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fmt.Fprint(h, version)
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checksum := fmt.Sprintf("%x", h.Sum(nil))
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url := fmt.Sprintf("http://%s/gzip-download.tgz", r.Host)
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v := VersionResponse{URL: url, Version: version, Checksum: checksum, ShouldUpdate: true}
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respondWithJSON(w, v, http.StatusOK)
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}
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func compressedDownloadHandler(w http.ResponseWriter, r *http.Request) {
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version := "2020.09.02"
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buf := new(bytes.Buffer)
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gw := gzip.NewWriter(buf)
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tw := tar.NewWriter(gw)
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header := &tar.Header{
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Size: int64(len(version)),
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Name: "download",
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}
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tw.WriteHeader(header)
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tw.Write([]byte(version))
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tw.Close()
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gw.Close()
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respondWithData(w, buf.Bytes(), http.StatusOK)
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}
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func downloadHandler(w http.ResponseWriter, r *http.Request) {
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version := mostRecentVersion
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requestedVersion := r.URL.Query().Get(VersionKeyName)
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if requestedVersion != "" {
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version = requestedVersion
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}
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respondWithData(w, []byte(version), http.StatusOK)
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}
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func betaHandler(w http.ResponseWriter, r *http.Request) {
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respondWithData(w, []byte(mostRecentBetaVersion), http.StatusOK)
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}
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func failureHandler(w http.ResponseWriter, r *http.Request) {
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respondWithJSON(w, VersionResponse{Error: "unsupported os and architecture"}, http.StatusBadRequest)
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}
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func IsNewerVersion(current string, check string) bool {
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if current == "" || check == "" {
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return false
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}
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if strings.Contains(strings.ToLower(current), "dev") {
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return false // dev builds shouldn't update
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}
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cMajor, cMinor, cPatch, err := SemanticParts(current)
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if err != nil {
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return false
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}
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nMajor, nMinor, nPatch, err := SemanticParts(check)
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if err != nil {
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return false
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}
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if nMajor > cMajor {
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return true
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}
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if nMajor == cMajor && nMinor > cMinor {
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return true
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}
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if nMajor == cMajor && nMinor == cMinor && nPatch > cPatch {
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return true
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}
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return false
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}
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func SemanticParts(version string) (major int, minor int, patch int, err error) {
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major = 0
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minor = 0
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patch = 0
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parts := strings.Split(version, ".")
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if len(parts) != 3 {
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err = errors.New("invalid version")
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return
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}
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major, err = strconv.Atoi(parts[0])
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if err != nil {
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return
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}
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minor, err = strconv.Atoi(parts[1])
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if err != nil {
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return
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}
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patch, err = strconv.Atoi(parts[2])
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if err != nil {
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return
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}
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return
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}
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func createServer() *httptest.Server {
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mux := http.NewServeMux()
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mux.HandleFunc("/updater", updateHandler)
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mux.HandleFunc("/download", downloadHandler)
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mux.HandleFunc("/beta", betaHandler)
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mux.HandleFunc("/fail", failureHandler)
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mux.HandleFunc("/compressed", gzipUpdateHandler)
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mux.HandleFunc("/gzip-download.tgz", compressedDownloadHandler)
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return httptest.NewServer(mux)
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}
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func createTestFile(t *testing.T, path string) {
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f, err := os.Create(path)
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require.NoError(t, err)
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fmt.Fprint(f, "2020.08.04")
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f.Close()
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}
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func TestUpdateService(t *testing.T) {
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ts := createServer()
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defer ts.Close()
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createTestFile(t, testFilePath)
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defer os.Remove(testFilePath)
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log.Println("server url: ", ts.URL)
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s := NewWorkersService("2020.8.2", fmt.Sprintf("%s/updater", ts.URL), testFilePath, Options{})
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v, err := s.Check()
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require.NoError(t, err)
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require.Equal(t, v.Version(), mostRecentVersion)
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require.NoError(t, v.Apply())
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dat, err := ioutil.ReadFile(testFilePath)
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require.NoError(t, err)
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require.Equal(t, string(dat), mostRecentVersion)
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}
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func TestBetaUpdateService(t *testing.T) {
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ts := createServer()
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defer ts.Close()
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createTestFile(t, testFilePath)
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defer os.Remove(testFilePath)
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s := NewWorkersService("2020.8.2", fmt.Sprintf("%s/updater", ts.URL), testFilePath, Options{IsBeta: true})
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v, err := s.Check()
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require.NoError(t, err)
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require.Equal(t, v.Version(), mostRecentBetaVersion)
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require.NoError(t, v.Apply())
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dat, err := ioutil.ReadFile(testFilePath)
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require.NoError(t, err)
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require.Equal(t, string(dat), mostRecentBetaVersion)
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}
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func TestFailUpdateService(t *testing.T) {
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ts := createServer()
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defer ts.Close()
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createTestFile(t, testFilePath)
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defer os.Remove(testFilePath)
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s := NewWorkersService("2020.8.2", fmt.Sprintf("%s/fail", ts.URL), testFilePath, Options{})
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v, err := s.Check()
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require.Error(t, err)
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require.Nil(t, v)
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}
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func TestNoUpdateService(t *testing.T) {
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ts := createServer()
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defer ts.Close()
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createTestFile(t, testFilePath)
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defer os.Remove(testFilePath)
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s := NewWorkersService(mostRecentVersion, fmt.Sprintf("%s/updater", ts.URL), testFilePath, Options{})
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v, err := s.Check()
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require.NoError(t, err)
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require.NotNil(t, v)
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require.Empty(t, v.Version())
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}
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func TestForcedUpdateService(t *testing.T) {
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ts := createServer()
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defer ts.Close()
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createTestFile(t, testFilePath)
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defer os.Remove(testFilePath)
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s := NewWorkersService("2020.8.5", fmt.Sprintf("%s/updater", ts.URL), testFilePath, Options{IsForced: true})
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v, err := s.Check()
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require.NoError(t, err)
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require.Equal(t, v.Version(), mostRecentVersion)
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require.NoError(t, v.Apply())
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dat, err := ioutil.ReadFile(testFilePath)
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require.NoError(t, err)
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require.Equal(t, string(dat), mostRecentVersion)
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}
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func TestUpdateSpecificVersionService(t *testing.T) {
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ts := createServer()
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defer ts.Close()
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createTestFile(t, testFilePath)
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defer os.Remove(testFilePath)
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reqVersion := "2020.9.1"
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s := NewWorkersService("2020.8.2", fmt.Sprintf("%s/updater", ts.URL), testFilePath, Options{RequestedVersion: reqVersion})
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v, err := s.Check()
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require.NoError(t, err)
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require.Equal(t, reqVersion, v.Version())
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require.NoError(t, v.Apply())
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dat, err := ioutil.ReadFile(testFilePath)
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require.NoError(t, err)
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require.Equal(t, reqVersion, string(dat))
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}
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func TestCompressedUpdateService(t *testing.T) {
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ts := createServer()
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defer ts.Close()
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createTestFile(t, testFilePath)
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defer os.Remove(testFilePath)
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s := NewWorkersService("2020.8.2", fmt.Sprintf("%s/compressed", ts.URL), testFilePath, Options{})
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v, err := s.Check()
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require.NoError(t, err)
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require.Equal(t, "2020.09.02", v.Version())
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require.NoError(t, v.Apply())
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dat, err := ioutil.ReadFile(testFilePath)
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require.NoError(t, err)
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require.Equal(t, "2020.09.02", string(dat))
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}
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func TestUpdateWhenRunningKnownBuggyVersion(t *testing.T) {
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ts := createServer()
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defer ts.Close()
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createTestFile(t, testFilePath)
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defer os.Remove(testFilePath)
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s := NewWorkersService(knownBuggyVersion, fmt.Sprintf("%s/updater", ts.URL), testFilePath, Options{})
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v, err := s.Check()
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require.NoError(t, err)
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require.Equal(t, v.Version(), mostRecentVersion)
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require.Equal(t, v.UserMessage(), expectedUserMsg)
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}
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