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[gocheese.git] / refresh.go
index e60f7d9a864eb9284bd012987289db1f4856d276..3d134a0c2274973d2e2306cc3a2eed7dca54bd29 100644 (file)
@@ -1,19 +1,17 @@
-/*
-GoCheese -- Python private package repository and caching proxy
-Copyright (C) 2019-2023 Sergey Matveev <stargrave@stargrave.org>
-
-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 <http://www.gnu.org/licenses/>.
-*/
+// GoCheese -- Python private package repository and caching proxy
+// Copyright (C) 2019-2024 Sergey Matveev <stargrave@stargrave.org>
+//
+// 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 <http://www.gnu.org/licenses/>.
 
 package main
 
@@ -42,8 +40,8 @@ import (
 )
 
 const (
-       HashAlgoSHA256     = "sha256"
        HashAlgoBLAKE2b256 = "blake2b_256"
+       HashAlgoSHA256     = "sha256"
        HashAlgoSHA512     = "sha512"
        HashAlgoMD5        = "md5"
        InternalFlag       = ".internal"
@@ -54,8 +52,8 @@ var (
        PyPIURLParsed     *url.URL
        PyPIHTTPTransport http.Transport
        KnownHashAlgos    []string = []string{
-               HashAlgoSHA256,
                HashAlgoBLAKE2b256,
+               HashAlgoSHA256,
                HashAlgoSHA512,
                HashAlgoMD5,
        }
@@ -72,7 +70,7 @@ func blake2b256New() hash.Hash {
 func agentedReq(url string) *http.Request {
        req, err := http.NewRequest("GET", url, nil)
        if err != nil {
-               log.Fatalln(err)
+               log.Fatal(err)
        }
        req.Header.Set("User-Agent", UserAgent)
        return req
@@ -148,7 +146,7 @@ func refreshDir(
                                        Name:  MDFieldToRecField[recField],
                                        Value: jsonField,
                                }); err != nil {
-                                       log.Fatalln(err)
+                                       log.Fatal(err)
                                }
                        }
                        for _, m := range []RecFieldToValuesMap{
@@ -165,7 +163,7 @@ func refreshDir(
                                                Name:  MDFieldToRecField[m.recField],
                                                Value: v,
                                        }); err != nil {
-                                               log.Fatalln(err)
+                                               log.Fatal(err)
                                        }
                                }
                        }
@@ -204,7 +202,7 @@ func refreshDir(
                                        Name:  MDFieldToRecField[recField],
                                        Value: jsonField,
                                }); err != nil {
-                                       log.Fatalln(err)
+                                       log.Fatal(err)
                                }
                        }
 
@@ -217,7 +215,7 @@ func refreshDir(
                                                Name:  MDFieldToRecField[m.recField],
                                                Value: v,
                                        }); err != nil {
-                                               log.Fatalln(err)
+                                               log.Fatal(err)
                                        }
                                }
                        }
@@ -229,7 +227,7 @@ func refreshDir(
                        if _, err = wr.WriteFieldMultiline(
                                MDFieldDescription, lines,
                        ); err != nil {
-                               log.Fatalln(err)
+                               log.Fatal(err)
                        }
                }
 
@@ -248,6 +246,9 @@ func refreshDir(
                }
        }
        mtimes := make(map[string]time.Time)
+       digestsBLAKE2b256 := make(map[string][]byte)
+       digestsSHA256 := make(map[string][]byte)
+       digestsSHA512 := make(map[string][]byte)
        for _, releases := range allReleases {
                for _, rel := range releases {
                        if rel.Filename == "" || rel.UploadTimeISO8601 == "" {
@@ -263,6 +264,39 @@ func refreshDir(
                                return false
                        }
                        mtimes[rel.Filename] = t.Truncate(time.Second)
+                       if d := rel.Digests[HashAlgoBLAKE2b256]; d != "" {
+                               digestsBLAKE2b256[rel.Filename], err = hex.DecodeString(d)
+                               if err != nil {
+                                       log.Println(
+                                               "error", r.RemoteAddr, "refresh-json", pkgName,
+                                               "can not decode blake2b_256 digest:", err,
+                                       )
+                                       http.Error(w, "can not parse metadata JSON", http.StatusBadGateway)
+                                       return false
+                               }
+                       }
+                       if d := rel.Digests[HashAlgoSHA256]; d != "" {
+                               digestsSHA256[rel.Filename], err = hex.DecodeString(d)
+                               if err != nil {
+                                       log.Println(
+                                               "error", r.RemoteAddr, "refresh-json", pkgName,
+                                               "can not decode sha256 digest:", err,
+                                       )
+                                       http.Error(w, "can not parse metadata JSON", http.StatusBadGateway)
+                                       return false
+                               }
+                       }
+                       if d := rel.Digests[HashAlgoSHA512]; d != "" {
+                               digestsSHA512[rel.Filename], err = hex.DecodeString(d)
+                               if err != nil {
+                                       log.Println(
+                                               "error", r.RemoteAddr, "refresh-json", pkgName,
+                                               "can not decode sha512 digest:", err,
+                                       )
+                                       http.Error(w, "can not parse metadata JSON", http.StatusBadGateway)
+                                       return false
+                               }
+                       }
                }
        }
 
@@ -305,56 +339,73 @@ func refreshDir(
                        return false
                }
 
-               if pkgURL.Fragment == "" {
-                       log.Println(r.RemoteAddr, "pypi", filename, "no digest")
-                       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("error", r.RemoteAddr, "pypi", filename, "invalid digest")
-                       http.Error(w, "invalid digest provided", http.StatusBadGateway)
-                       return false
-               }
-               digest, err := hex.DecodeString(digestInfo[1])
-               if err != nil {
-                       log.Println("error", r.RemoteAddr, "pypi", filename, "invalid digest")
-                       http.Error(w, err.Error(), http.StatusBadGateway)
-                       return false
-               }
-               hashAlgo := digestInfo[0]
+               var hashAlgo string
                var hasherNew func() hash.Hash
-               var hashSize int
-               switch hashAlgo {
-               case HashAlgoMD5:
-                       hasherNew = md5.New
-                       hashSize = md5.Size
-               case HashAlgoSHA256:
+               var digest []byte
+               if d := digestsBLAKE2b256[filename]; d != nil {
+                       hasherNew = blake2b256New
+                       hashAlgo = HashAlgoBLAKE2b256
+                       digest = d
+               } else if d := digestsSHA256[filename]; d != nil {
                        hasherNew = sha256.New
-                       hashSize = sha256.Size
-               case HashAlgoSHA512:
+                       hashAlgo = HashAlgoSHA256
+                       digest = d
+               } else if d := digestsSHA512[filename]; d != nil {
                        hasherNew = sha512.New
-                       hashSize = sha512.Size
-               case HashAlgoBLAKE2b256:
-                       hasherNew = blake2b256New
-                       hashSize = blake2b.Size256
-               default:
-                       log.Println(
-                               "error", r.RemoteAddr, "pypi",
-                               filename, "unknown digest", hashAlgo,
-                       )
-                       http.Error(w, "unknown digest algorithm", http.StatusBadGateway)
-                       return false
-               }
-               if len(digest) != hashSize {
-                       log.Println(
-                               "error", r.RemoteAddr, "pypi",
-                               filename, "invalid digest length")
-                       http.Error(w, "invalid digest length", http.StatusBadGateway)
-                       return false
+                       hashAlgo = HashAlgoSHA512
+                       digest = d
+               } else {
+                       if pkgURL.Fragment == "" {
+                               log.Println(r.RemoteAddr, "pypi", filename, "no digest")
+                               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("error", r.RemoteAddr, "pypi", filename, "invalid digest")
+                               http.Error(w, "invalid digest provided", http.StatusBadGateway)
+                               return false
+                       }
+                       var err error
+                       digest, err = hex.DecodeString(digestInfo[1])
+                       if err != nil {
+                               log.Println("error", r.RemoteAddr, "pypi", filename, "invalid digest")
+                               http.Error(w, err.Error(), http.StatusBadGateway)
+                               return false
+                       }
+                       hashAlgo = digestInfo[0]
+                       var hashSize int
+                       switch hashAlgo {
+                       case HashAlgoBLAKE2b256:
+                               hasherNew = blake2b256New
+                               hashSize = blake2b.Size256
+                       case HashAlgoSHA256:
+                               hasherNew = sha256.New
+                               hashSize = sha256.Size
+                       case HashAlgoSHA512:
+                               hasherNew = sha512.New
+                               hashSize = sha512.Size
+                       case HashAlgoMD5:
+                               hasherNew = md5.New
+                               hashSize = md5.Size
+                       default:
+                               log.Println(
+                                       "error", r.RemoteAddr, "pypi",
+                                       filename, "unknown digest", hashAlgo,
+                               )
+                               http.Error(w, "unknown digest algorithm", http.StatusBadGateway)
+                               return false
+                       }
+                       if len(digest) != hashSize {
+                               log.Println(
+                                       "error", r.RemoteAddr, "pypi",
+                                       filename, "invalid digest length")
+                               http.Error(w, "invalid digest length", http.StatusBadGateway)
+                               return false
+                       }
                }
 
                pkgURL.Fragment = ""
@@ -393,8 +444,8 @@ func refreshDir(
                                return false
                        }
                        hasher := hasherNew()
-                       hasherSHA256 := sha256.New()
                        hasherBLAKE2b256 := blake2b256New()
+                       hasherSHA256 := sha256.New()
                        dst, err := TempFile(dirPath)
                        if err != nil {
                                log.Println("error", r.RemoteAddr, "pypi", filename, err)
@@ -403,12 +454,12 @@ func refreshDir(
                        }
                        dstBuf := bufio.NewWriter(dst)
                        wrs := []io.Writer{hasher, dstBuf}
-                       if hashAlgo != HashAlgoSHA256 {
-                               wrs = append(wrs, hasherSHA256)
-                       }
                        if hashAlgo != HashAlgoBLAKE2b256 {
                                wrs = append(wrs, hasherBLAKE2b256)
                        }
+                       if hashAlgo != HashAlgoSHA256 {
+                               wrs = append(wrs, hasherSHA256)
+                       }
                        wr := io.MultiWriter(wrs...)
                        if _, err = io.Copy(wr, resp.Body); err != nil {
                                os.Remove(dst.Name())
@@ -469,36 +520,36 @@ func refreshDir(
                                return false
                        }
 
-                       var digestSHA256 []byte
                        var digestBLAKE2b256 []byte
-                       if hashAlgo == HashAlgoSHA256 {
-                               digestSHA256 = hasher.Sum(nil)
-                       } else {
-                               digestSHA256 = hasherSHA256.Sum(nil)
-                       }
+                       var digestSHA256 []byte
                        if hashAlgo == HashAlgoBLAKE2b256 {
                                digestBLAKE2b256 = hasher.Sum(nil)
                        } else {
                                digestBLAKE2b256 = hasherBLAKE2b256.Sum(nil)
                        }
+                       if hashAlgo == HashAlgoSHA256 {
+                               digestSHA256 = hasher.Sum(nil)
+                       } else {
+                               digestSHA256 = hasherSHA256.Sum(nil)
+                       }
                        if err = WriteFileSync(
-                               dirPath, path+"."+HashAlgoSHA256,
-                               digestSHA256, mtime,
+                               dirPath, path+"."+HashAlgoBLAKE2b256,
+                               digestBLAKE2b256, mtime,
                        ); err != nil {
                                log.Println(
                                        "error", r.RemoteAddr, "pypi",
-                                       path+"."+HashAlgoSHA256, err,
+                                       path+"."+HashAlgoBLAKE2b256, err,
                                )
                                http.Error(w, err.Error(), http.StatusInternalServerError)
                                return false
                        }
                        if err = WriteFileSync(
-                               dirPath, path+"."+HashAlgoBLAKE2b256,
-                               digestBLAKE2b256, mtime,
+                               dirPath, path+"."+HashAlgoSHA256,
+                               digestSHA256, mtime,
                        ); err != nil {
                                log.Println(
                                        "error", r.RemoteAddr, "pypi",
-                                       path+"."+HashAlgoBLAKE2b256, err,
+                                       path+"."+HashAlgoSHA256, err,
                                )
                                http.Error(w, err.Error(), http.StatusInternalServerError)
                                return false