144 lines
4.2 KiB
Go
144 lines
4.2 KiB
Go
package controller
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import (
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"fmt"
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"encoding/json"
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"io"
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"log"
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"net/http"
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"crypto/sha1"
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"os"
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"mime/multipart"
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"git.fuwafuwa.moe/x3/ngfshare/config"
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sauth "git.fuwafuwa.moe/x3/ngfshare/auth"
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"git.fuwafuwa.moe/x3/ngfshare/db"
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)
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type responseStruct struct {
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Id string `json:"id"`
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Filename string `json:"filename"`
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Url string `json:"url"`
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UrlShort string `json:"url_short"`
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DeleteUrl string `json:"delete_url"`
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}
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func responseWithFile(id, filename string, w http.ResponseWriter) {
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urlShort := fmt.Sprintf("%s/-%s", config.Conf.UrlPrefix, id)
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rsp := responseStruct{
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Id: id,
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Filename: filename,
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Url: fmt.Sprintf("%s/%s", urlShort, filename),
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UrlShort: urlShort,
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DeleteUrl: fmt.Sprintf("%s/api/delete/%s", config.Conf.UrlPrefix, id),
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}
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jsb, err := json.Marshal(rsp)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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fmt.Fprintln(w, `{"error":"Failed response json marshal"}`)
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return
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}
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w.Write(jsb)
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}
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func copyFileToStorage(srcFile multipart.File, sha1sum string) error {
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d1 := sha1sum[0:2]
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d2 := sha1sum[2:4]
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saveDir := fmt.Sprintf("%s/%s/%s", config.Conf.StoreDir, d1, d2)
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savePath := fmt.Sprintf("%s/%s", saveDir, sha1sum)
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err := os.MkdirAll(saveDir, 0750)
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if err != nil {
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log.Println("Cannot create directory for savedir:", saveDir, err)
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return err
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}
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dstFile, err := os.Create(savePath)
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if err != nil {
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log.Println("Cannot create file for savepath:", savePath, err)
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return err
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}
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defer dstFile.Close()
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_, err = io.Copy(dstFile, srcFile)
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if err != nil {
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log.Println("Cannot copy file", err)
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return err
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}
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log.Println("File copied")
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return nil
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}
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func Upload(w http.ResponseWriter, r *http.Request) {
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auth := r.Header.Get("Authorization")
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cookieAuth := false
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if auth == "" {
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auth = sauth.GetAuthCookie(r)
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cookieAuth = true
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}
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r.ParseMultipartForm(40*1024*1024)
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w.Header().Add("Content-Type", "application/json")
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file, fheader, err := r.FormFile("file")
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if err != nil {
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log.Println("No file POST field in upload, or some other error", err)
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http.Error(w, "Bad Request", http.StatusBadRequest)
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return
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}
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defer file.Close()
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sha := sha1.New()
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hlen, err := io.Copy(sha, file)
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if err != nil || hlen != fheader.Size {
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log.Println("Hash copy failed or not all file got hashed", err)
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http.Error(w, "Bad Request", http.StatusBadRequest)
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}
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sum := fmt.Sprintf("%x", sha.Sum(nil))
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dbFile, exists := db.Db.GetFileBySha1(sum)
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if exists {
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log.Println("Dupe upload detected on id", dbFile.Id)
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// Don't check if it was uploaded by the same api key or not because i don't care.
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if !cookieAuth {
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responseWithFile(dbFile.Id, dbFile.Filename, w)
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} else {
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// If upload from web, redirect to the final url
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http.Redirect(w, r, fmt.Sprintf("/-%s/%s", dbFile.Id, dbFile.Filename), http.StatusFound)
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}
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return
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}
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file.Seek(0, 0)
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b := make([]byte, 512)
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file.Read(b)
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fType := http.DetectContentType(b)
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if fType == "application/octet-stream" {
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fType = fheader.Header.Get("Content-Type")
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}
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resId, tx, err := db.Db.InsertFile(fheader.Filename, fheader.Size, fType, sum, auth)
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if err != nil {
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log.Println("Failed to insert into database", err)
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w.WriteHeader(http.StatusInternalServerError)
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fmt.Fprintln(w, `{"error":"Failed to insert into databse"}`)
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return
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}
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file.Seek(0, 0)
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err = copyFileToStorage(file, sum)
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if err != nil {
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tx.Rollback()
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fmt.Fprintln(w, `{"error":"Failed to copy file"}`)
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return
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}
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tx.Commit()
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log.Printf("Added file with id: '%s' name: '%s' sha1sum: '%s'", resId, fheader.Filename, sum)
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if !cookieAuth {
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responseWithFile(resId, fheader.Filename, w)
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} else {
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// If upload from web, redirect to the final url
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http.Redirect(w, r, fmt.Sprintf("/-%s/%s", resId, fheader.Filename), http.StatusFound)
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}
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}
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