Links for %s

/* GoCheese -- Python private package repository and caching proxy Copyright (C) 2019-2021 Sergey Matveev 2019-2021 Elena Balakhonova This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ // Python private package repository and caching proxy package main import ( "bytes" "context" "encoding/hex" "flag" "fmt" "io/ioutil" "log" "net" "net/http" "net/url" "os" "os/signal" "path/filepath" "regexp" "runtime" "strings" "syscall" "time" "golang.org/x/net/netutil" ) const ( Version = "2.5.0" HTMLBegin = ` Links for %s ` HTMLEnd = " \n\n" HTMLElement = " %s
\n" InternalFlag = ".internal" GPGSigExt = ".asc" Warranty = `This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see .` ) const ( HashAlgoSHA256 = "sha256" HashAlgoBLAKE2b256 = "blake2_256" HashAlgoSHA512 = "sha512" HashAlgoMD5 = "md5" ) var ( pkgPyPI = regexp.MustCompile(`^.*]*>(.+)
.*$`) normalizationRe = regexp.MustCompilePOSIX("[-_.]+") knownHashAlgos []string = []string{ HashAlgoSHA256, HashAlgoBLAKE2b256, HashAlgoSHA512, HashAlgoMD5, } root = flag.String("root", "./packages", "Path to packages directory") bind = flag.String("bind", "[::]:8080", "Address to bind to") tlsCert = flag.String("tls-cert", "", "Path to TLS X.509 certificate") tlsKey = flag.String("tls-key", "", "Path to TLS X.509 private key") norefreshURLPath = flag.String("norefresh", "/norefresh/", "Non-refreshing URL path") refreshURLPath = flag.String("refresh", "/simple/", "Auto-refreshing URL path") gpgUpdateURLPath = flag.String("gpgupdate", "/gpgupdate/", "GPG forceful refreshing URL path") pypiURL = flag.String("pypi", "https://pypi.org/simple/", "Upstream PyPI URL") passwdPath = flag.String("passwd", "passwd", "Path to file with authenticators") logTimestamped = flag.Bool("log-timestamped", false, "Prepend timestmap to log messages") passwdCheck = flag.Bool("passwd-check", false, "Test the -passwd file for syntax errors and exit") fsck = flag.Bool("fsck", false, "Check integrity of all packages (errors are in stderr)") 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 pypiURLParsed *url.URL ) func mkdirForPkg(w http.ResponseWriter, r *http.Request, pkgName string) bool { path := filepath.Join(*root, pkgName) if _, err := os.Stat(path); os.IsNotExist(err) { if err = os.Mkdir(path, os.FileMode(0777)); err != nil { log.Println("error", r.RemoteAddr, "mkdir", pkgName, err) http.Error(w, err.Error(), http.StatusInternalServerError) return false } log.Println(r.RemoteAddr, "mkdir", pkgName) } return true } func listRoot(w http.ResponseWriter, r *http.Request) { files, err := ioutil.ReadDir(*root) if err != nil { log.Println("error", r.RemoteAddr, "root", err) http.Error(w, err.Error(), http.StatusInternalServerError) return } var result bytes.Buffer result.WriteString(fmt.Sprintf(HTMLBegin, "root")) for _, file := range files { if file.Mode().IsDir() { result.WriteString(fmt.Sprintf( HTMLElement, *refreshURLPath+file.Name()+"/", "", file.Name(), )) } } result.WriteString(HTMLEnd) w.Write(result.Bytes()) } func listDir( w http.ResponseWriter, r *http.Request, pkgName string, autorefresh, gpgUpdate bool, ) { dirPath := filepath.Join(*root, pkgName) if autorefresh { if !refreshDir(w, r, pkgName, "", gpgUpdate) { return } } else if _, err := os.Stat(dirPath); os.IsNotExist(err) && !refreshDir(w, r, pkgName, "", false) { return } fis, err := ioutil.ReadDir(dirPath) if err != nil { log.Println("error", r.RemoteAddr, "list", pkgName, err) http.Error(w, err.Error(), http.StatusInternalServerError) return } files := make(map[string]struct{}, len(fis)/2) for _, fi := range fis { files[fi.Name()] = struct{}{} } var result bytes.Buffer result.WriteString(fmt.Sprintf(HTMLBegin, pkgName)) for _, algo := range knownHashAlgos { for fn, _ := range files { if killed { // Skip expensive I/O when shutting down http.Error(w, "shutting down", http.StatusInternalServerError) return } if !strings.HasSuffix(fn, "."+algo) { continue } delete(files, fn) digest, err := ioutil.ReadFile(filepath.Join(dirPath, fn)) if err != nil { log.Println("error", r.RemoteAddr, "list", fn, err) http.Error(w, err.Error(), http.StatusInternalServerError) return } fnClean := strings.TrimSuffix(fn, "."+algo) delete(files, fnClean) gpgSigAttr := "" if _, err = os.Stat(filepath.Join(dirPath, fnClean+GPGSigExt)); err == nil { gpgSigAttr = " data-gpg-sig=true" delete(files, fnClean+GPGSigExt) } result.WriteString(fmt.Sprintf( HTMLElement, strings.Join([]string{ *refreshURLPath, pkgName, "/", fnClean, "#", algo, "=", hex.EncodeToString(digest), }, ""), gpgSigAttr, fnClean, )) } } result.WriteString(HTMLEnd) w.Write(result.Bytes()) } func servePkg(w http.ResponseWriter, r *http.Request, pkgName, filename string) { log.Println(r.RemoteAddr, "get", filename) path := filepath.Join(*root, pkgName, filename) if _, err := os.Stat(path); os.IsNotExist(err) { if !refreshDir(w, r, pkgName, filename, false) { return } } http.ServeFile(w, r, path) } func handler(w http.ResponseWriter, r *http.Request) { switch r.Method { case "GET": var path string var autorefresh bool var gpgUpdate bool if strings.HasPrefix(r.URL.Path, *norefreshURLPath) { path = strings.TrimPrefix(r.URL.Path, *norefreshURLPath) } else if strings.HasPrefix(r.URL.Path, *refreshURLPath) { path = strings.TrimPrefix(r.URL.Path, *refreshURLPath) autorefresh = true } else if strings.HasPrefix(r.URL.Path, *gpgUpdateURLPath) { path = strings.TrimPrefix(r.URL.Path, *gpgUpdateURLPath) autorefresh = true gpgUpdate = true } else { http.Error(w, "unknown action", http.StatusBadRequest) return } parts := strings.Split(strings.TrimSuffix(path, "/"), "/") if len(parts) > 2 { http.Error(w, "invalid path", http.StatusBadRequest) return } if len(parts) == 1 { if parts[0] == "" { listRoot(w, r) } else { listDir(w, r, parts[0], autorefresh, gpgUpdate) } } else { servePkg(w, r, parts[0], parts[1]) } case "POST": serveUpload(w, r) default: http.Error(w, "unknown action", http.StatusBadRequest) } } func main() { flag.Parse() if *warranty { fmt.Println(Warranty) return } if *version { fmt.Println("GoCheese", Version, "built with", runtime.Version()) return } if *logTimestamped { log.SetFlags(log.Ldate | log.Lmicroseconds | log.Lshortfile) } else { log.SetFlags(log.Lshortfile) } log.SetOutput(os.Stdout) if *fsck { if !goodIntegrity() { os.Exit(1) } return } if *passwdCheck { refreshPasswd() return } if (*tlsCert != "" && *tlsKey == "") || (*tlsCert == "" && *tlsKey != "") { log.Fatalln("Both -tls-cert and -tls-key are required") } var err error pypiURLParsed, err = url.Parse(*pypiURL) if err != nil { log.Fatalln(err) } refreshPasswd() ln, err := net.Listen("tcp", *bind) if err != nil { log.Fatal(err) } ln = netutil.LimitListener(ln, *maxClients) server := &http.Server{ ReadTimeout: time.Minute, WriteTimeout: time.Minute, } http.HandleFunc(*norefreshURLPath, handler) http.HandleFunc(*refreshURLPath, handler) if *gpgUpdateURLPath != "" { http.HandleFunc(*gpgUpdateURLPath, handler) } needsRefreshPasswd := make(chan os.Signal, 0) needsShutdown := make(chan os.Signal, 0) exitErr := make(chan error, 0) signal.Notify(needsRefreshPasswd, syscall.SIGHUP) signal.Notify(needsShutdown, syscall.SIGTERM, syscall.SIGINT) go func() { for range needsRefreshPasswd { log.Println("refreshing passwords") refreshPasswd() } }() go func(s *http.Server) { <-needsShutdown killed = true log.Println("shutting down") ctx, cancel := context.WithTimeout(context.TODO(), time.Minute) exitErr <- s.Shutdown(ctx) cancel() }(server) log.Println( "GoCheese", Version, "listens:", "root:", *root, "bind:", *bind, "pypi:", *pypiURL, ) if *tlsCert == "" { err = server.Serve(ln) } else { err = server.ServeTLS(ln, *tlsCert, *tlsKey) } if err != http.ErrServerClosed { log.Fatal(err) } if err := <-exitErr; err != nil { log.Fatal(err) } }