package main
import (
+ "bufio"
"bytes"
"context"
+ "crypto/md5"
"crypto/sha256"
+ "crypto/sha512"
"encoding/hex"
"flag"
"fmt"
+ "hash"
"io"
"io/ioutil"
"log"
"syscall"
"time"
+ "golang.org/x/crypto/blake2b"
"golang.org/x/net/netutil"
)
`
HTMLEnd = " </body>\n</html>\n"
HTMLElement = " <a href=\"%s\"%s>%s</a><br/>\n"
- SHA256Prefix = "sha256="
- SHA256Ext = ".sha256"
InternalFlag = ".internal"
GPGSigExt = ".asc"
- GPGSigAttr = " data-gpg-sig=true"
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
)
var (
- pkgPyPI = regexp.MustCompile(`^.*<a href="([^"]+)"[^>]*>(.+)</a><br/>.*$`)
- Version string = "UNKNOWN"
+ pkgPyPI = regexp.MustCompile(`^.*<a href="([^"]+)"[^>]*>(.+)</a><br/>.*$`)
+ normalizationRe = regexp.MustCompilePOSIX("[-_.]+")
+
+ HashAlgoSHA256 = "sha256"
+ HashAlgoBLAKE2b256 = "blake2_256"
+ HashAlgoSHA512 = "sha512"
+ HashAlgoMD5 = "md5"
+ 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")
version = flag.Bool("version", false, "Print version information")
warranty = flag.Bool("warranty", false, "Print warranty information")
- killed bool
+ Version string = "UNKNOWN"
+ killed bool
+ pypiURLParsed *url.URL
)
func mkdirForPkg(w http.ResponseWriter, r *http.Request, dir string) bool {
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,
return false
}
dirPath := filepath.Join(*root, dir)
- var submatches []string
- var uri string
- var filename string
- var path string
- var pkgURL *url.URL
- var digest []byte
for _, lineRaw := range bytes.Split(body, []byte("\n")) {
- submatches = pkgPyPI.FindStringSubmatch(string(lineRaw))
+ submatches := pkgPyPI.FindStringSubmatch(string(lineRaw))
if len(submatches) == 0 {
continue
}
- uri = submatches[1]
- filename = submatches[2]
- if pkgURL, err = url.Parse(uri); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
+ 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
}
- digest, err = hex.DecodeString(strings.TrimPrefix(pkgURL.Fragment, SHA256Prefix))
+ 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 = ""
- path = filepath.Join(dirPath, filename)
+ 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
return false
}
log.Println(r.RemoteAddr, "pypi download", filename)
- resp, err = http.Get(pkgURL.String())
+ 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 := sha256.New()
+ hasher := hasherNew()
+ hasherSHA256 := sha256.New()
dst, err := TempFile(dirPath)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return false
}
- wr := io.MultiWriter(hasher, dst)
+ 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, err.Error(), http.StatusBadGateway)
+ http.Error(w, "digest mismatch", http.StatusBadGateway)
return false
}
if err = dst.Sync(); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return false
}
- dst.Close()
+ 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 {
- if resp, err := http.Get(pkgURL.String() + GPGSigExt); err == nil {
- sig, err := ioutil.ReadAll(resp.Body)
- resp.Body.Close()
- if err == nil {
- 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)
- }
- }
+ 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)
}
- path = path + SHA256Ext
+ GPGSigSkip:
+ path = path + "." + hashAlgo
_, err = os.Stat(path)
if err == nil {
continue
} else if _, err := os.Stat(dirPath); os.IsNotExist(err) && !refreshDir(w, r, dir, "", false) {
return
}
- files, err := ioutil.ReadDir(dirPath)
+ fis, err := ioutil.ReadDir(dirPath)
if err != nil {
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, dir))
- var data []byte
- var gpgSigAttr string
- 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
+ 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 {
+ 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, dir, "/", fnClean,
+ "#", algo, "=", hex.EncodeToString(digest),
+ }, ""),
+ gpgSigAttr,
+ fnClean,
+ ))
}
- filenameClean = strings.TrimSuffix(file.Name(), SHA256Ext)
- if _, err = os.Stat(filepath.Join(dirPath, filenameClean+GPGSigExt)); os.IsNotExist(err) {
- gpgSigAttr = ""
- } else {
- gpgSigAttr = GPGSigAttr
- }
- result.WriteString(fmt.Sprintf(
- HTMLElement,
- strings.Join([]string{
- *refreshURLPath, dir, "/",
- filenameClean, "#", SHA256Prefix, hex.EncodeToString(data),
- }, ""),
- gpgSigAttr,
- filenameClean,
- ))
}
result.WriteString(HTMLEnd)
w.Write(result.Bytes())
}
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
}
+
+ // 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])
}
}
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)
- dir := filename[:strings.LastIndex(filename, "-")]
- dirPath := filepath.Join(*root, dir)
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)
+ http.Error(w, "already exists", http.StatusBadRequest)
return
}
- if !mkdirForPkg(w, r, dir) {
+ if !mkdirForPkg(w, r, pkgName) {
return
}
- internalPath := filepath.Join(dirPath, InternalFlag)
- var dst *os.File
- if _, err = os.Stat(internalPath); os.IsNotExist(err) {
- if dst, err = os.Create(internalPath); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- dst.Close()
- }
src, err := file.Open()
defer src.Close()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
- dst, err = TempFile(dirPath)
+ 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 {
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
}
- if err = WriteFileSync(dirPath, path+SHA256Ext, digest); err != nil {
+ 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
}
}
delete(gpgSigsExpected, filename)
log.Println(r.RemoteAddr, "put", filename, "by", username)
- dir := filename[:strings.LastIndex(filename, "-")]
- dirPath := filepath.Join(*root, dir)
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)
+ http.Error(w, "already exists", http.StatusBadRequest)
return
}
src, err := file.Open()
}
}
-func goodIntegrity() bool {
- dirs, err := ioutil.ReadDir(*root)
- if err != nil {
- log.Fatal(err)
- }
- hasher := sha256.New()
- digest := make([]byte, sha256.Size)
- isGood := true
- var data []byte
- var pkgName string
- for _, dir := range dirs {
- files, err := ioutil.ReadDir(filepath.Join(*root, dir.Name()))
- if err != nil {
- log.Fatal(err)
- }
- for _, file := range files {
- if !strings.HasSuffix(file.Name(), SHA256Ext) {
- continue
- }
- pkgName = strings.TrimSuffix(file.Name(), SHA256Ext)
- data, err = ioutil.ReadFile(filepath.Join(*root, dir.Name(), pkgName))
- if err != nil {
- if os.IsNotExist(err) {
- continue
- }
- log.Fatal(err)
- }
- hasher.Write(data)
- data, err = ioutil.ReadFile(filepath.Join(*root, dir.Name(), file.Name()))
- if err != nil {
- log.Fatal(err)
- }
- if bytes.Compare(hasher.Sum(digest[:0]), data) == 0 {
- log.Println(pkgName, "GOOD")
- } else {
- isGood = false
- log.Println(pkgName, "BAD")
- }
- hasher.Reset()
- }
- }
- return isGood
-}
-
func main() {
flag.Parse()
if *warranty {
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)
}
http.HandleFunc(*norefreshURLPath, handler)
http.HandleFunc(*refreshURLPath, handler)
- http.HandleFunc(*gpgUpdateURLPath, handler)
+ if *gpgUpdateURLPath != "" {
+ http.HandleFunc(*gpgUpdateURLPath, handler)
+ }
needsRefreshPasswd := make(chan os.Signal, 0)
needsShutdown := make(chan os.Signal, 0)