/*
GoCheese -- Python private package repository and caching proxy
-Copyright (C) 2019 Sergey Matveev <stargrave@stargrave.org>
- 2019 Elena Balakhonova <balakhonova_e@riseup.net>
+Copyright (C) 2019-2021 Sergey Matveev <stargrave@stargrave.org>
+ 2019-2021 Elena Balakhonova <balakhonova_e@riseup.net>
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
package main
import (
- "bufio"
"bytes"
"context"
- "crypto/md5"
- "crypto/sha256"
- "crypto/sha512"
"encoding/hex"
"flag"
"fmt"
- "hash"
- "io"
"io/ioutil"
"log"
"net"
"syscall"
"time"
- "golang.org/x/crypto/blake2b"
"golang.org/x/net/netutil"
)
const (
+ Version = "2.5.0"
HTMLBegin = `<!DOCTYPE html>
<html>
<head>
along with this program. If not, see <http://www.gnu.org/licenses/>.`
)
+const (
+ HashAlgoSHA256 = "sha256"
+ HashAlgoBLAKE2b256 = "blake2_256"
+ HashAlgoSHA512 = "sha512"
+ HashAlgoMD5 = "md5"
+)
+
var (
pkgPyPI = regexp.MustCompile(`^.*<a href="([^"]+)"[^>]*>(.+)</a><br/>.*$`)
normalizationRe = regexp.MustCompilePOSIX("[-_.]+")
- HashAlgoSHA256 = "sha256"
- HashAlgoBLAKE2b256 = "blake2_256"
- HashAlgoSHA512 = "sha512"
- HashAlgoMD5 = "md5"
- knownHashAlgos []string = []string{
+ knownHashAlgos []string = []string{
HashAlgoSHA256,
HashAlgoBLAKE2b256,
HashAlgoSHA512,
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")
+ 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")
- Version string = "UNKNOWN"
killed bool
pypiURLParsed *url.URL
)
-func mkdirForPkg(w http.ResponseWriter, r *http.Request, dir string) bool {
- path := filepath.Join(*root, dir)
+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", dir)
- }
- return true
-}
-
-func blake2b256New() hash.Hash {
- h, err := blake2b.New256(nil)
- if err != nil {
- panic(err)
- }
- return h
-}
-
-func refreshDir(
- w http.ResponseWriter,
- r *http.Request,
- dir,
- filenameGet string,
- gpgUpdate bool,
-) bool {
- if _, err := os.Stat(filepath.Join(*root, dir, InternalFlag)); err == nil {
- return true
- }
- resp, err := http.Get(*pypiURL + dir + "/")
- if err != nil {
- http.Error(w, err.Error(), http.StatusBadGateway)
- return false
- }
- body, err := ioutil.ReadAll(resp.Body)
- resp.Body.Close()
- if err != nil {
- http.Error(w, err.Error(), http.StatusBadGateway)
- return false
- }
- if !mkdirForPkg(w, r, dir) {
- return false
- }
- dirPath := filepath.Join(*root, dir)
- for _, lineRaw := range bytes.Split(body, []byte("\n")) {
- submatches := pkgPyPI.FindStringSubmatch(string(lineRaw))
- if len(submatches) == 0 {
- continue
- }
- uri := submatches[1]
- filename := submatches[2]
- pkgURL, err := url.Parse(uri)
- if err != nil {
- http.Error(w, err.Error(), http.StatusBadGateway)
- return false
- }
-
- if pkgURL.Fragment == "" {
- log.Println(r.RemoteAddr, "pypi", filename, "no digest provided")
- http.Error(w, "no digest provided", http.StatusBadGateway)
- return false
- }
- digestInfo := strings.Split(pkgURL.Fragment, "=")
- if len(digestInfo) == 1 {
- // Ancient non PEP-0503 PyPIs, assume MD5
- digestInfo = []string{"md5", digestInfo[0]}
- } else if len(digestInfo) != 2 {
- log.Println(r.RemoteAddr, "pypi", filename, "invalid digest provided")
- http.Error(w, "invalid digest provided", http.StatusBadGateway)
- return false
- }
- digest, err := hex.DecodeString(digestInfo[1])
- if err != nil {
- http.Error(w, err.Error(), http.StatusBadGateway)
- return false
- }
- hashAlgo := digestInfo[0]
- var hasherNew func() hash.Hash
- var hashSize int
- switch hashAlgo {
- case HashAlgoMD5:
- hasherNew = md5.New
- hashSize = md5.Size
- case HashAlgoSHA256:
- hasherNew = sha256.New
- hashSize = sha256.Size
- case HashAlgoSHA512:
- hasherNew = sha512.New
- hashSize = sha512.Size
- case HashAlgoBLAKE2b256:
- hasherNew = blake2b256New
- hashSize = blake2b.Size256
- default:
- log.Println(
- r.RemoteAddr, "pypi", filename,
- "unknown digest algorithm", hashAlgo,
- )
- http.Error(w, "unknown digest algorithm", http.StatusBadGateway)
- return false
- }
- if len(digest) != hashSize {
- log.Println(r.RemoteAddr, "pypi", filename, "invalid digest length")
- http.Error(w, "invalid digest length", http.StatusBadGateway)
- return false
- }
-
- pkgURL.Fragment = ""
- if pkgURL.Host == "" {
- uri = pypiURLParsed.ResolveReference(pkgURL).String()
- } else {
- uri = pkgURL.String()
- }
-
- path := filepath.Join(dirPath, filename)
- 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)
- resp, err = http.Get(uri)
- if err != nil {
- log.Println(r.RemoteAddr, "pypi download error:", err.Error())
- http.Error(w, err.Error(), http.StatusBadGateway)
- return false
- }
- defer resp.Body.Close()
- hasher := hasherNew()
- hasherSHA256 := sha256.New()
- dst, err := TempFile(dirPath)
- if err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return false
- }
- dstBuf := bufio.NewWriter(dst)
- wrs := []io.Writer{hasher, dstBuf}
- if hashAlgo != HashAlgoSHA256 {
- wrs = append(wrs, hasherSHA256)
- }
- wr := io.MultiWriter(wrs...)
- if _, err = io.Copy(wr, resp.Body); err != nil {
- os.Remove(dst.Name())
- dst.Close()
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return false
- }
- if err = dstBuf.Flush(); err != nil {
- os.Remove(dst.Name())
- dst.Close()
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return false
- }
- if bytes.Compare(hasher.Sum(nil), digest) != 0 {
- log.Println(r.RemoteAddr, "pypi", filename, "digest mismatch")
- os.Remove(dst.Name())
- dst.Close()
- http.Error(w, "digest mismatch", http.StatusBadGateway)
- return false
- }
- if err = dst.Sync(); err != nil {
- os.Remove(dst.Name())
- dst.Close()
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return false
- }
- if err = dst.Close(); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return false
- }
- if err = os.Rename(dst.Name(), path); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return false
- }
- if err = DirSync(dirPath); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return false
- }
- if hashAlgo != HashAlgoSHA256 {
- hashAlgo = HashAlgoSHA256
- digest = hasherSHA256.Sum(nil)
- for _, algo := range knownHashAlgos[1:] {
- os.Remove(path + "." + algo)
- }
- }
- }
- if filename == filenameGet || gpgUpdate {
- if _, err = os.Stat(path); err != nil {
- goto GPGSigSkip
- }
- resp, err := http.Get(uri + GPGSigExt)
- if err != nil {
- goto GPGSigSkip
- }
- if resp.StatusCode != http.StatusOK {
- resp.Body.Close()
- goto GPGSigSkip
- }
- sig, err := ioutil.ReadAll(resp.Body)
- resp.Body.Close()
- if err != nil {
- goto GPGSigSkip
- }
- if !bytes.HasPrefix(sig, []byte("-----BEGIN PGP SIGNATURE-----")) {
- log.Println(r.RemoteAddr, "pypi non PGP signature", filename)
- goto GPGSigSkip
- }
- if err = WriteFileSync(dirPath, path+GPGSigExt, sig); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return false
- }
- log.Println(r.RemoteAddr, "pypi downloaded signature", filename)
- }
- GPGSigSkip:
- path = path + "." + hashAlgo
- _, err = os.Stat(path)
- if err == nil {
- continue
- }
- if !os.IsNotExist(err) {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return false
- }
- log.Println(r.RemoteAddr, "pypi touch", filename)
- if err = WriteFileSync(dirPath, path, digest); err != nil {
- 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
}
result.WriteString(fmt.Sprintf(
HTMLElement,
*refreshURLPath+file.Name()+"/",
- file.Name(),
+ "", file.Name(),
))
}
}
func listDir(
w http.ResponseWriter,
r *http.Request,
- dir string,
- autorefresh,
- gpgUpdate bool,
+ pkgName string,
+ autorefresh, gpgUpdate bool,
) {
- dirPath := filepath.Join(*root, dir)
+ dirPath := filepath.Join(*root, pkgName)
if autorefresh {
- if !refreshDir(w, r, dir, "", gpgUpdate) {
+ if !refreshDir(w, r, pkgName, "", gpgUpdate) {
return
}
- } else if _, err := os.Stat(dirPath); os.IsNotExist(err) && !refreshDir(w, r, dir, "", false) {
+ } 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[fi.Name()] = struct{}{}
}
var result bytes.Buffer
- result.WriteString(fmt.Sprintf(HTMLBegin, dir))
+ result.WriteString(fmt.Sprintf(HTMLBegin, pkgName))
for _, algo := range knownHashAlgos {
for fn, _ := range files {
if killed {
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
}
result.WriteString(fmt.Sprintf(
HTMLElement,
strings.Join([]string{
- *refreshURLPath, dir, "/", fnClean,
+ *refreshURLPath, pkgName, "/", fnClean,
"#", algo, "=", hex.EncodeToString(digest),
}, ""),
gpgSigAttr,
w.Write(result.Bytes())
}
-func servePkg(w http.ResponseWriter, r *http.Request, dir, filename string) {
+func servePkg(w http.ResponseWriter, r *http.Request, pkgName, filename string) {
log.Println(r.RemoteAddr, "get", filename)
- path := filepath.Join(*root, dir, filename)
+ path := filepath.Join(*root, pkgName, filename)
if _, err := os.Stat(path); os.IsNotExist(err) {
- if !refreshDir(w, r, dir, filename, false) {
+ if !refreshDir(w, r, pkgName, filename, false) {
return
}
}
http.ServeFile(w, r, path)
}
-func serveUpload(w http.ResponseWriter, r *http.Request) {
- // Authentication
- username, password, ok := r.BasicAuth()
- if !ok {
- log.Println(r.RemoteAddr, "unauthenticated", username)
- http.Error(w, "unauthenticated", http.StatusUnauthorized)
- return
- }
- auther, ok := passwords[username]
- if !ok || !auther.Auth(password) {
- log.Println(r.RemoteAddr, "unauthenticated", username)
- http.Error(w, "unauthenticated", http.StatusUnauthorized)
- return
- }
-
- // Form parsing
- var err error
- if err = r.ParseMultipartForm(1 << 20); err != nil {
- http.Error(w, err.Error(), http.StatusBadRequest)
- return
- }
- pkgNames, exists := r.MultipartForm.Value["name"]
- if !exists || len(pkgNames) != 1 {
- http.Error(w, "single name is expected in request", http.StatusBadRequest)
- return
- }
- pkgName := normalizationRe.ReplaceAllString(pkgNames[0], "-")
- dirPath := filepath.Join(*root, pkgName)
- 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
- }
- }
- gpgSigsExpected := make(map[string]struct{})
-
- // Checking is it internal package
- if _, err = os.Stat(filepath.Join(dirPath, InternalFlag)); err != nil {
- log.Println(r.RemoteAddr, "non-internal package", pkgName)
- http.Error(w, "unknown internal package", http.StatusUnauthorized)
- return
- }
-
- for _, file := range r.MultipartForm.File["content"] {
- filename := file.Filename
- gpgSigsExpected[filename+GPGSigExt] = struct{}{}
- log.Println(r.RemoteAddr, "put", filename, "by", username)
- path := filepath.Join(dirPath, filename)
- if _, err = os.Stat(path); err == nil {
- log.Println(r.RemoteAddr, "already exists", filename)
- http.Error(w, "already exists", http.StatusBadRequest)
- return
- }
- if !mkdirForPkg(w, r, pkgName) {
- return
- }
- src, err := file.Open()
- defer src.Close()
- if err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- dst, err := TempFile(dirPath)
- if err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- dstBuf := bufio.NewWriter(dst)
- hasher := sha256.New()
- wr := io.MultiWriter(hasher, dst)
- if _, err = io.Copy(wr, src); err != nil {
- os.Remove(dst.Name())
- dst.Close()
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- if err = dstBuf.Flush(); err != nil {
- os.Remove(dst.Name())
- dst.Close()
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- if err = dst.Sync(); err != nil {
- os.Remove(dst.Name())
- dst.Close()
- http.Error(w, err.Error(), http.StatusInternalServerError)
- 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 = DirSync(dirPath); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- if err = WriteFileSync(dirPath, path+"."+HashAlgoSHA256, digest); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- }
- for _, file := range r.MultipartForm.File["gpg_signature"] {
- filename := file.Filename
- if _, exists := gpgSigsExpected[filename]; !exists {
- http.Error(w, "unexpected GPG signature filename", http.StatusBadRequest)
- return
- }
- delete(gpgSigsExpected, filename)
- log.Println(r.RemoteAddr, "put", filename, "by", username)
- path := filepath.Join(dirPath, filename)
- if _, err = os.Stat(path); err == nil {
- log.Println(r.RemoteAddr, "already exists", filename)
- http.Error(w, "already exists", http.StatusBadRequest)
- return
- }
- src, err := file.Open()
- if err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- sig, err := ioutil.ReadAll(src)
- src.Close()
- if err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- if err = WriteFileSync(dirPath, path, sig); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- }
-}
-
func handler(w http.ResponseWriter, r *http.Request) {
switch r.Method {
case "GET":
return
}
if *version {
- fmt.Println("GoCheese version " + Version + " built with " + runtime.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()
- log.Println("root:", *root, "bind:", *bind)
ln, err := net.Listen("tcp", *bind)
if err != nil {
signal.Notify(needsShutdown, syscall.SIGTERM, syscall.SIGINT)
go func() {
for range needsRefreshPasswd {
- log.Println("Refreshing passwords")
+ log.Println("refreshing passwords")
refreshPasswd()
}
}()
go func(s *http.Server) {
<-needsShutdown
killed = true
- log.Println("Shutting down")
+ 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 {