2 GoCheese -- Python private package repository and caching proxy
3 Copyright (C) 2019-2023 Sergey Matveev <stargrave@stargrave.org>
4 2019-2023 Elena Balakhonova <balakhonova_e@riseup.net>
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, version 3 of the License.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
35 "go.cypherpunks.ru/recfile"
38 var NormalizationRe = regexp.MustCompilePOSIX("[-_.]+")
40 func serveUpload(w http.ResponseWriter, r *http.Request) {
42 username, password, ok := r.BasicAuth()
44 log.Println(r.RemoteAddr, "unauthenticated", username)
45 http.Error(w, "unauthenticated", http.StatusUnauthorized)
49 auther, ok := Passwords[username]
51 if !ok || !auther.Auth(password) {
52 log.Println(r.RemoteAddr, "unauthenticated", username)
53 http.Error(w, "unauthenticated", http.StatusUnauthorized)
59 if err = r.ParseMultipartForm(1 << 20); err != nil {
60 http.Error(w, err.Error(), http.StatusBadRequest)
63 pkgNames, exists := r.MultipartForm.Value["name"]
64 if !exists || len(pkgNames) != 1 {
65 http.Error(w, "single name is expected in request", http.StatusBadRequest)
68 pkgName := strings.ToLower(NormalizationRe.ReplaceAllString(pkgNames[0], "-"))
69 dirPath := filepath.Join(Root, pkgName)
70 now := time.Now().UTC()
72 var digestSHA256Expected []byte
73 if digestSHA256ExpectedHex, exists := r.MultipartForm.Value["sha256_digest"]; exists {
74 digestSHA256Expected, err = hex.DecodeString(digestSHA256ExpectedHex[0])
76 http.Error(w, "bad sha256_digest: "+err.Error(), http.StatusBadRequest)
80 var digestBLAKE2b256Expected []byte
81 if digestBLAKE2b256ExpectedHex, exists := r.MultipartForm.Value["blake2_256_digest"]; exists {
82 digestBLAKE2b256Expected, err = hex.DecodeString(digestBLAKE2b256ExpectedHex[0])
84 http.Error(w, "bad blake2_256_digest: "+err.Error(), http.StatusBadRequest)
89 // Checking is it internal package
90 if _, err = os.Stat(filepath.Join(dirPath, InternalFlag)); err != nil {
91 log.Println(r.RemoteAddr, "non-internal package", pkgName)
92 http.Error(w, "unknown internal package", http.StatusUnauthorized)
96 for _, file := range r.MultipartForm.File["content"] {
97 filename := file.Filename
98 log.Println(r.RemoteAddr, "put", filename, "by", username)
99 path := filepath.Join(dirPath, filename)
100 if _, err = os.Stat(path); err == nil {
101 log.Println(r.RemoteAddr, filename, "already exists")
102 http.Error(w, "already exists", http.StatusBadRequest)
105 if !mkdirForPkg(w, r, pkgName) {
108 src, err := file.Open()
110 log.Println("error", r.RemoteAddr, filename, err)
111 http.Error(w, err.Error(), http.StatusInternalServerError)
115 dst, err := TempFile(dirPath)
117 log.Println("error", r.RemoteAddr, filename, err)
118 http.Error(w, err.Error(), http.StatusInternalServerError)
121 dstBuf := bufio.NewWriter(dst)
122 hasherSHA256 := sha256.New()
123 hasherBLAKE2b256 := blake2b256New()
124 wr := io.MultiWriter(hasherSHA256, hasherBLAKE2b256, dst)
125 if _, err = io.Copy(wr, src); err != nil {
126 log.Println("error", r.RemoteAddr, filename, err)
127 os.Remove(dst.Name())
129 http.Error(w, err.Error(), http.StatusInternalServerError)
132 if err = dstBuf.Flush(); err != nil {
133 log.Println("error", r.RemoteAddr, filename, err)
134 os.Remove(dst.Name())
136 http.Error(w, err.Error(), http.StatusInternalServerError)
140 if err = dst.Sync(); err != nil {
141 log.Println("error", r.RemoteAddr, filename, err)
142 os.Remove(dst.Name())
144 http.Error(w, err.Error(), http.StatusInternalServerError)
150 digestSHA256 := hasherSHA256.Sum(nil)
151 digestBLAKE2b256 := hasherBLAKE2b256.Sum(nil)
152 if digestSHA256Expected != nil {
153 if bytes.Equal(digestSHA256Expected, digestSHA256) {
154 log.Println(r.RemoteAddr, filename, "good SHA256 checksum received")
156 log.Println(r.RemoteAddr, filename, "bad SHA256 checksum received")
157 http.Error(w, "bad sha256 checksum", http.StatusBadRequest)
158 os.Remove(dst.Name())
162 if digestBLAKE2b256Expected != nil {
163 if bytes.Equal(digestBLAKE2b256Expected, digestBLAKE2b256) {
164 log.Println(r.RemoteAddr, filename, "good BLAKE2b-256 checksum received")
166 log.Println(r.RemoteAddr, filename, "bad BLAKE2b-256 checksum received")
167 http.Error(w, "bad blake2_256 checksum", http.StatusBadRequest)
168 os.Remove(dst.Name())
173 if err = os.Rename(dst.Name(), path); err != nil {
174 log.Println("error", r.RemoteAddr, path, err)
175 http.Error(w, err.Error(), http.StatusInternalServerError)
178 if err = DirSync(dirPath); err != nil {
179 log.Println("error", r.RemoteAddr, dirPath, err)
180 http.Error(w, err.Error(), http.StatusInternalServerError)
183 if err = WriteFileSync(dirPath, path+"."+HashAlgoSHA256, digestSHA256, now); err != nil {
184 log.Println("error", r.RemoteAddr, path+"."+HashAlgoSHA256, err)
185 http.Error(w, err.Error(), http.StatusInternalServerError)
188 if err = WriteFileSync(dirPath, path+"."+HashAlgoBLAKE2b256, digestBLAKE2b256, now); err != nil {
189 log.Println("error", r.RemoteAddr, path+"."+HashAlgoBLAKE2b256, err)
190 http.Error(w, err.Error(), http.StatusInternalServerError)
196 wr := recfile.NewWriter(&buf)
197 for _, m := range MDFormToRecField {
198 formField, recField := m[0], m[1]
199 if vs, exists := r.MultipartForm.Value[formField]; exists {
200 for _, v := range vs {
201 lines := strings.Split(v, "\n")
203 _, err = wr.WriteFieldMultiline(recField, lines)
205 _, err = wr.WriteFields(recfile.Field{
216 path := filepath.Join(dirPath, MDFile)
217 if err = WriteFileSync(dirPath, path, buf.Bytes(), now); err != nil {
218 log.Println("error", r.RemoteAddr, path, err)
219 http.Error(w, err.Error(), http.StatusInternalServerError)