Gitea
2 years ago
15 changed files with 302 additions and 70 deletions
@ -1,22 +0,0 @@
|
||||
/* |
||||
gochat - A dead simple real time webchat. |
||||
Copyright (C) 2022 Kasyanov Nikolay Alexeyevich (Unbewohnte) |
||||
This file is a part of gochat |
||||
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, either version 3 of the License, or |
||||
(at your option) any later version. |
||||
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 <https://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
|
||||
function to_hex_string(byteArr) { |
||||
return Array.from(byteArr, function(byte) { |
||||
return ('0' + (byte & 0xFF).toString(16).slice(-2)); |
||||
}).join('') |
||||
} |
||||
@ -0,0 +1,7 @@
|
||||
package api |
||||
|
||||
const AttachmentFormPostKey string = "attachment" |
||||
|
||||
type PartialAttachmentURL struct { |
||||
URL string `json:"url"` |
||||
} |
||||
@ -0,0 +1,115 @@
|
||||
package server |
||||
|
||||
import ( |
||||
"encoding/json" |
||||
"fmt" |
||||
"io" |
||||
"net/http" |
||||
"os" |
||||
"path/filepath" |
||||
"time" |
||||
|
||||
"unbewohnte.xyz/Unbewohnte/gochat/api" |
||||
"unbewohnte.xyz/Unbewohnte/gochat/log" |
||||
) |
||||
|
||||
// Handle incoming attachments
|
||||
func (s *Server) handleAttachments(w http.ResponseWriter, req *http.Request) { |
||||
userAuthHeader := api.GetUserAuthHeaderData(req) |
||||
if !s.db.DoesUserExist(userAuthHeader.Name) { |
||||
http.Error(w, "Not authorized", http.StatusUnauthorized) |
||||
return |
||||
} |
||||
|
||||
userDB, _ := s.db.GetUser(userAuthHeader.Name) |
||||
if userDB.SecretHash != userAuthHeader.SecretHash { |
||||
http.Error(w, "Not authorized", http.StatusUnauthorized) |
||||
return |
||||
} |
||||
|
||||
// accept incoming file
|
||||
file, header, err := req.FormFile(api.AttachmentFormPostKey) |
||||
if err != nil { |
||||
log.Error("could not get attached file: %s", err) |
||||
http.Error(w, "Error getting attached file", http.StatusInternalServerError) |
||||
return |
||||
} |
||||
defer file.Close() |
||||
|
||||
if uint64(header.Size) > api.MaxAttachmentSize { |
||||
http.Error(w, "Too big file", http.StatusBadRequest) |
||||
return |
||||
} |
||||
|
||||
localFilename := fmt.Sprintf("%s_%d_%s", userDB.Name, header.Size, header.Filename) |
||||
localFile, err := os.Create(filepath.Join(s.workingDir, attachmentsDirName, localFilename)) |
||||
if err != nil { |
||||
log.Error("could not create local attachment file: %s", err) |
||||
http.Error(w, "Could not create file", http.StatusInternalServerError) |
||||
return |
||||
} |
||||
defer localFile.Close() |
||||
|
||||
_, err = io.Copy(localFile, file) |
||||
if err != nil { |
||||
log.Error("could not copy attachment file contents: %s", err) |
||||
http.Error(w, "Could not copy file contents", http.StatusInternalServerError) |
||||
return |
||||
} |
||||
|
||||
// send partial URL pointing to the file
|
||||
url := api.PartialAttachmentURL{ |
||||
URL: fmt.Sprintf("%s/%s", attachmentsDirName, localFilename), |
||||
} |
||||
urlJsonBytes, err := json.Marshal(&url) |
||||
if err != nil { |
||||
log.Error("could not marshal partial attachment URL for \"%s\": %s", localFilename, err) |
||||
http.Error(w, "Error constructing a request", http.StatusInternalServerError) |
||||
return |
||||
} |
||||
|
||||
w.Write(urlJsonBytes) |
||||
} |
||||
|
||||
// Remove the oldest attachments when the memory limit is exceeded
|
||||
func manageAttachmentsStorage(attachmentsDirPath string, sizeLimit uint64, checkDelay time.Duration) { |
||||
for { |
||||
dirEntries, err := os.ReadDir(attachmentsDirPath) |
||||
if err != nil { |
||||
log.Error("error reading attachments directory: %s", err) |
||||
} |
||||
|
||||
var dirSize uint64 = 0 |
||||
var oldestAttachmentModTime time.Time = time.Now() |
||||
var oldestAttachmentPath string = "" |
||||
var oldestAttachmentSize uint64 = 0 |
||||
if dirEntries != nil { |
||||
for _, entry := range dirEntries { |
||||
entryInfo, err := entry.Info() |
||||
if err != nil { |
||||
continue |
||||
} |
||||
|
||||
entrySize := entryInfo.Size() |
||||
dirSize += uint64(entrySize) |
||||
|
||||
entryModTime := entryInfo.ModTime() |
||||
if entryModTime.Before(oldestAttachmentModTime) { |
||||
oldestAttachmentModTime = entryModTime |
||||
oldestAttachmentPath = filepath.Join(attachmentsDirPath, entry.Name()) |
||||
oldestAttachmentSize = uint64(entrySize) |
||||
} |
||||
} |
||||
|
||||
if dirSize > sizeLimit { |
||||
// A cleanup !
|
||||
os.Remove(oldestAttachmentPath) |
||||
log.Info( |
||||
"removed %s during attachments storage management. Cleared %d bytes", |
||||
oldestAttachmentPath, oldestAttachmentSize) |
||||
} |
||||
} |
||||
|
||||
time.Sleep(checkDelay) |
||||
} |
||||
} |
||||
Loading…
Reference in new issue