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"
)
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
- }
- }
- return true
-}
-
func listRoot(w http.ResponseWriter, r *http.Request) {
files, err := ioutil.ReadDir(*root)
if err != nil {
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":