X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=gocheese.go;h=cdbb1358d70789ecd211e0097b6c9e5080775a5e;hb=c4dc8234e8d219cf784ee604bf9bc53f8af4dd12;hp=7a36129746ab96d1254564d69385323639531d1d;hpb=902150e27fa1530823817eb3227f9100b27d9410;p=gocheese.git diff --git a/gocheese.go b/gocheese.go index 7a36129..cdbb135 100644 --- a/gocheese.go +++ b/gocheese.go @@ -82,6 +82,8 @@ var ( maxClients = flag.Int("maxclients", 128, "Maximal amount of simultaneous clients") version = flag.Bool("version", false, "Print version information") warranty = flag.Bool("warranty", false, "Print warranty information") + + killed bool ) func mkdirForPkg(w http.ResponseWriter, r *http.Request, dir string) bool { @@ -98,17 +100,15 @@ func mkdirForPkg(w http.ResponseWriter, r *http.Request, dir string) bool { func refreshDir(w http.ResponseWriter, r *http.Request, dir, filenameGet string) bool { if _, err := os.Stat(filepath.Join(*root, dir, InternalFlag)); err == nil { - log.Println(r.RemoteAddr, "pypi refresh skip, internal package", dir) return true } - log.Println(r.RemoteAddr, "pypi refresh", dir) resp, err := http.Get(*pypiURL + dir + "/") if err != nil { http.Error(w, err.Error(), http.StatusBadGateway) return false } - defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) + resp.Body.Close() if err != nil { http.Error(w, err.Error(), http.StatusBadGateway) return false @@ -139,6 +139,11 @@ func refreshDir(w http.ResponseWriter, r *http.Request, dir, filenameGet string) return false } if filename == filenameGet { + if killed { + // Skip heavy remote call, when shutting down + http.Error(w, "shutting down", http.StatusInternalServerError) + return false + } log.Println(r.RemoteAddr, "pypi download", filename) path = filepath.Join(*root, dir, filename) resp, err = http.Get(uri) @@ -198,27 +203,27 @@ func refreshDir(w http.ResponseWriter, r *http.Request, dir, filenameGet string) } func listRoot(w http.ResponseWriter, r *http.Request) { - log.Println(r.RemoteAddr, "root") files, err := ioutil.ReadDir(*root) if err != nil { http.Error(w, err.Error(), http.StatusInternalServerError) return } - w.Write([]byte(fmt.Sprintf(HTMLBegin, "root", "root"))) + var result bytes.Buffer + result.WriteString(fmt.Sprintf(HTMLBegin, "root", "root")) for _, file := range files { if file.Mode().IsDir() { - w.Write([]byte(fmt.Sprintf( + result.WriteString(fmt.Sprintf( HTMLElement, *refreshURLPath+file.Name()+"/", file.Name(), - ))) + )) } } - w.Write([]byte(HTMLEnd)) + result.WriteString(HTMLEnd) + w.Write(result.Bytes()) } func listDir(w http.ResponseWriter, r *http.Request, dir string, autorefresh bool) { - log.Println(r.RemoteAddr, "dir", dir) dirPath := filepath.Join(*root, dir) if autorefresh { if !refreshDir(w, r, dir, "") { @@ -232,33 +237,40 @@ func listDir(w http.ResponseWriter, r *http.Request, dir string, autorefresh boo http.Error(w, err.Error(), http.StatusInternalServerError) return } - w.Write([]byte(fmt.Sprintf(HTMLBegin, dir, dir))) + var result bytes.Buffer + result.WriteString(fmt.Sprintf(HTMLBegin, dir, dir)) var data []byte var filenameClean string for _, file := range files { if !strings.HasSuffix(file.Name(), SHA256Ext) { continue } + if killed { + // Skip expensive I/O when shutting down + http.Error(w, "shutting down", http.StatusInternalServerError) + return + } data, err = ioutil.ReadFile(filepath.Join(dirPath, file.Name())) if err != nil { http.Error(w, err.Error(), http.StatusInternalServerError) return } filenameClean = strings.TrimSuffix(file.Name(), SHA256Ext) - w.Write([]byte(fmt.Sprintf( + result.WriteString(fmt.Sprintf( HTMLElement, strings.Join([]string{ *refreshURLPath, dir, "/", - filenameClean, "#", SHA256Prefix, string(data), + filenameClean, "#", SHA256Prefix, hex.EncodeToString(data), }, ""), filenameClean, - ))) + )) } - w.Write([]byte(HTMLEnd)) + result.WriteString(HTMLEnd) + w.Write(result.Bytes()) } func servePkg(w http.ResponseWriter, r *http.Request, dir, filename string) { - log.Println(r.RemoteAddr, "pkg", filename) + log.Println(r.RemoteAddr, "get", filename) path := filepath.Join(*root, dir, filename) if _, err := os.Stat(path); os.IsNotExist(err) { if !refreshDir(w, r, dir, filename) { @@ -286,9 +298,17 @@ func serveUpload(w http.ResponseWriter, r *http.Request) { http.Error(w, err.Error(), http.StatusBadRequest) return } + var digestExpected []byte + if digestExpectedHex, exists := r.MultipartForm.Value["sha256_digest"]; exists { + digestExpected, err = hex.DecodeString(digestExpectedHex[0]) + if err != nil { + http.Error(w, "bad sha256_digest: "+err.Error(), http.StatusBadRequest) + return + } + } for _, file := range r.MultipartForm.File["content"] { filename := file.Filename - log.Println(r.RemoteAddr, "upload", filename, "by", username) + log.Println(r.RemoteAddr, "put", filename, "by", username) dir := filename[:strings.LastIndex(filename, "-")] dirPath := filepath.Join(*root, dir) path := filepath.Join(dirPath, filename) @@ -335,11 +355,22 @@ func serveUpload(w http.ResponseWriter, r *http.Request) { return } dst.Close() + digest := hasher.Sum(nil) + if digestExpected != nil { + if bytes.Compare(digestExpected, digest) == 0 { + log.Println(r.RemoteAddr, filename, "good checksum received") + } else { + log.Println(r.RemoteAddr, filename, "bad checksum received") + http.Error(w, "bad checksum", http.StatusBadRequest) + os.Remove(dst.Name()) + return + } + } if err = os.Rename(dst.Name(), path); err != nil { http.Error(w, err.Error(), http.StatusInternalServerError) return } - if err = ioutil.WriteFile(path+SHA256Ext, hasher.Sum(nil), os.FileMode(0666)); err != nil { + if err = ioutil.WriteFile(path+SHA256Ext, digest, os.FileMode(0666)); err != nil { http.Error(w, err.Error(), http.StatusInternalServerError) return } @@ -347,7 +378,8 @@ func serveUpload(w http.ResponseWriter, r *http.Request) { } func handler(w http.ResponseWriter, r *http.Request) { - if r.Method == "GET" { + switch r.Method { + case "GET": var path string var autorefresh bool if strings.HasPrefix(r.URL.Path, *norefreshURLPath) { @@ -371,8 +403,10 @@ func handler(w http.ResponseWriter, r *http.Request) { } else { servePkg(w, r, parts[0], parts[1]) } - } else if r.Method == "POST" { + case "POST": serveUpload(w, r) + default: + http.Error(w, "unknown action", http.StatusBadRequest) } } @@ -460,7 +494,7 @@ func main() { needsRefreshPasswd := make(chan os.Signal, 0) needsShutdown := make(chan os.Signal, 0) - killed := make(chan error, 0) + exitErr := make(chan error, 0) signal.Notify(needsRefreshPasswd, syscall.SIGHUP) signal.Notify(needsShutdown, syscall.SIGTERM, syscall.SIGINT) go func() { @@ -471,9 +505,10 @@ func main() { }() go func(s *http.Server) { <-needsShutdown + killed = true log.Println("Shutting down") ctx, cancel := context.WithTimeout(context.TODO(), time.Minute) - killed <- s.Shutdown(ctx) + exitErr <- s.Shutdown(ctx) cancel() }(server) @@ -485,7 +520,7 @@ func main() { if err != http.ErrServerClosed { log.Fatal(err) } - if err := <-killed; err != nil { + if err := <-exitErr; err != nil { log.Fatal(err) } }