mirror of
https://github.com/dutchcoders/transfer.sh.git
synced 2024-11-23 20:50:18 +01:00
618 lines
15 KiB
Go
618 lines
15 KiB
Go
/*
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The MIT License (MIT)
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Copyright (c) 2014 DutchCoders [https://github.com/dutchcoders/]
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package server
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import (
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// _ "transfer.sh/app/handlers"
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// _ "transfer.sh/app/utils"
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"archive/tar"
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"archive/zip"
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"bytes"
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"compress/gzip"
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"errors"
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"fmt"
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"html"
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html_template "html/template"
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"io"
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"io/ioutil"
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"log"
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"math/rand"
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"mime"
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"net/http"
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"net/url"
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"os"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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text_template "text/template"
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"time"
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"net"
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web "github.com/dutchcoders/transfer.sh-web"
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"github.com/gorilla/mux"
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"github.com/kennygrant/sanitize"
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"github.com/russross/blackfriday"
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)
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var (
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htmlTemplates = initHTMLTemplates()
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textTemplates = initTextTemplates()
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)
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func stripPrefix(path string) string {
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return strings.Replace(path, web.Prefix+"/", "", -1)
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}
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func initTextTemplates() *text_template.Template {
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templateMap := text_template.FuncMap{"format": formatNumber}
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// Templates with functions available to them
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var templates = text_template.New("").Funcs(templateMap)
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return templates
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}
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func initHTMLTemplates() *html_template.Template {
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templateMap := html_template.FuncMap{"format": formatNumber}
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// Templates with functions available to them
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var templates = html_template.New("").Funcs(templateMap)
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return templates
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}
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func healthHandler(w http.ResponseWriter, r *http.Request) {
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fmt.Fprintf(w, "Approaching Neutral Zone, all systems normal and functioning.")
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}
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/* The preview handler will show a preview of the content for browsers (accept type text/html), and referer is not transfer.sh */
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func (s *Server) previewHandler(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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token := vars["token"]
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filename := vars["filename"]
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contentType, contentLength, err := s.storage.Head(token, filename)
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if err != nil {
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http.Error(w, http.StatusText(404), 404)
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return
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}
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var templatePath string
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var content html_template.HTML
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switch {
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case strings.HasPrefix(contentType, "image/"):
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templatePath = "download.image.html"
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case strings.HasPrefix(contentType, "video/"):
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templatePath = "download.video.html"
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case strings.HasPrefix(contentType, "audio/"):
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templatePath = "download.audio.html"
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case strings.HasPrefix(contentType, "text/"):
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templatePath = "download.markdown.html"
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var reader io.ReadCloser
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if reader, _, _, err = s.storage.Get(token, filename); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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var data []byte
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if data, err = ioutil.ReadAll(reader); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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if strings.HasPrefix(contentType, "text/x-markdown") || strings.HasPrefix(contentType, "text/markdown") {
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output := blackfriday.MarkdownCommon(data)
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content = html_template.HTML(output)
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} else if strings.HasPrefix(contentType, "text/plain") {
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content = html_template.HTML(fmt.Sprintf("<pre>%s</pre>", html.EscapeString(string(data))))
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} else {
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templatePath = "download.sandbox.html"
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}
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default:
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templatePath = "download.html"
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}
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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data := struct {
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ContentType string
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Content html_template.HTML
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Filename string
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Url string
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ContentLength uint64
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}{
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contentType,
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content,
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filename,
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r.URL.String(),
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contentLength,
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}
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if err := htmlTemplates.ExecuteTemplate(w, templatePath, data); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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// this handler will output html or text, depending on the
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// support of the client (Accept header).
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func (s *Server) viewHandler(w http.ResponseWriter, r *http.Request) {
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// vars := mux.Vars(r)
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if acceptsHTML(r.Header) {
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if err := htmlTemplates.ExecuteTemplate(w, "index.html", nil); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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} else {
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if err := textTemplates.ExecuteTemplate(w, "index.txt", nil); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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}
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func (s *Server) notFoundHandler(w http.ResponseWriter, r *http.Request) {
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http.Error(w, http.StatusText(404), 404)
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}
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func (s *Server) postHandler(w http.ResponseWriter, r *http.Request) {
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if err := r.ParseMultipartForm(_24K); nil != err {
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log.Printf("%s", err.Error())
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http.Error(w, "Error occurred copying to output stream", 500)
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return
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}
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token := Encode(10000000 + int64(rand.Intn(1000000000)))
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w.Header().Set("Content-Type", "text/plain")
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for _, fheaders := range r.MultipartForm.File {
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for _, fheader := range fheaders {
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filename := sanitize.Path(filepath.Base(fheader.Filename))
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contentType := fheader.Header.Get("Content-Type")
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if contentType == "" {
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contentType = mime.TypeByExtension(filepath.Ext(fheader.Filename))
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}
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var f io.Reader
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var err error
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if f, err = fheader.Open(); err != nil {
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log.Printf("%s", err.Error())
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http.Error(w, err.Error(), 500)
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return
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}
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var b bytes.Buffer
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n, err := io.CopyN(&b, f, _24K+1)
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if err != nil && err != io.EOF {
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log.Printf("%s", err.Error())
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http.Error(w, err.Error(), 500)
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return
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}
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var reader io.Reader
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if n > _24K {
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file, err := ioutil.TempFile(s.tempPath, "transfer-")
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if err != nil {
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log.Fatal(err)
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}
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defer file.Close()
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n, err = io.Copy(file, io.MultiReader(&b, f))
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if err != nil {
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os.Remove(file.Name())
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log.Printf("%s", err.Error())
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http.Error(w, err.Error(), 500)
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return
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}
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reader, err = os.Open(file.Name())
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} else {
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reader = bytes.NewReader(b.Bytes())
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}
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contentLength := n
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log.Printf("Uploading %s %s %d %s", token, filename, contentLength, contentType)
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if err = s.storage.Put(token, filename, reader, contentType, uint64(contentLength)); err != nil {
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log.Printf("Backend storage error: %s", err.Error())
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http.Error(w, err.Error(), 500)
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return
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}
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relativeURL, _ := url.Parse(path.Join(token, filename))
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fmt.Fprint(w, getURL(r).ResolveReference(relativeURL).String())
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}
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}
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}
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func (s *Server) putHandler(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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filename := sanitize.Path(filepath.Base(vars["filename"]))
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contentLength := r.ContentLength
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var reader io.Reader
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reader = r.Body
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if contentLength == -1 {
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// queue file to disk, because s3 needs content length
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var err error
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var f io.Reader
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f = reader
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var b bytes.Buffer
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n, err := io.CopyN(&b, f, _24K+1)
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if err != nil && err != io.EOF {
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log.Printf("Error putting new file: %s", err.Error())
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http.Error(w, err.Error(), 500)
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return
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}
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if n > _24K {
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file, err := ioutil.TempFile(s.tempPath, "transfer-")
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if err != nil {
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log.Printf("%s", err.Error())
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http.Error(w, err.Error(), 500)
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return
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}
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defer file.Close()
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n, err = io.Copy(file, io.MultiReader(&b, f))
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if err != nil {
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os.Remove(file.Name())
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log.Printf("%s", err.Error())
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http.Error(w, err.Error(), 500)
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return
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}
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reader, err = os.Open(file.Name())
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} else {
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reader = bytes.NewReader(b.Bytes())
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}
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contentLength = n
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}
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contentType := r.Header.Get("Content-Type")
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if contentType == "" {
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contentType = mime.TypeByExtension(filepath.Ext(vars["filename"]))
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}
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token := Encode(10000000 + int64(rand.Intn(1000000000)))
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log.Printf("Uploading %s %s %d %s", token, filename, contentLength, contentType)
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var err error
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if err = s.storage.Put(token, filename, reader, contentType, uint64(contentLength)); err != nil {
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log.Printf("Error putting new file: %s", err.Error())
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http.Error(w, errors.New("Could not save file").Error(), 500)
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return
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}
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// w.Statuscode = 200
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w.Header().Set("Content-Type", "text/plain")
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relativeURL, _ := url.Parse(path.Join(token, filename))
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fmt.Fprint(w, getURL(r).ResolveReference(relativeURL).String())
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}
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func getURL(r *http.Request) *url.URL {
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u := *r.URL
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if r.TLS != nil {
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u.Scheme = "https"
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} else if proto := r.Header.Get("X-Forwarded-Proto"); proto != "" {
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u.Scheme = proto
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} else {
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u.Scheme = "http"
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}
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if u.Host != "" {
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} else if host, port, err := net.SplitHostPort(r.Host); err != nil {
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} else {
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if port == "80" && u.Scheme == "http" {
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u.Host = host
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} else if port == "443" && u.Scheme == "https" {
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u.Host = host
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} else {
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u.Host = net.JoinHostPort(host, port)
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}
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}
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return &u
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}
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func (s *Server) zipHandler(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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files := vars["files"]
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zipfilename := fmt.Sprintf("transfersh-%d.zip", uint16(time.Now().UnixNano()))
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w.Header().Set("Content-Type", "application/zip")
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w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", zipfilename))
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w.Header().Set("Connection", "close")
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zw := zip.NewWriter(w)
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for _, key := range strings.Split(files, ",") {
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if strings.HasPrefix(key, "/") {
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key = key[1:]
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}
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key = strings.Replace(key, "\\", "/", -1)
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token := strings.Split(key, "/")[0]
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filename := sanitize.Path(strings.Split(key, "/")[1])
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reader, _, _, err := s.storage.Get(token, filename)
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if err != nil {
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if s.storage.IsNotExist(err) {
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http.Error(w, "File not found", 404)
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return
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} else {
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log.Printf("%s", err.Error())
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http.Error(w, "Could not retrieve file.", 500)
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return
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}
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}
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defer reader.Close()
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header := &zip.FileHeader{
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Name: strings.Split(key, "/")[1],
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Method: zip.Store,
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ModifiedTime: uint16(time.Now().UnixNano()),
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ModifiedDate: uint16(time.Now().UnixNano()),
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}
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fw, err := zw.CreateHeader(header)
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if err != nil {
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log.Printf("%s", err.Error())
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http.Error(w, "Internal server error.", 500)
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return
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}
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if _, err = io.Copy(fw, reader); err != nil {
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log.Printf("%s", err.Error())
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http.Error(w, "Internal server error.", 500)
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return
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}
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}
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if err := zw.Close(); err != nil {
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log.Printf("%s", err.Error())
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http.Error(w, "Internal server error.", 500)
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return
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}
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}
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func (s *Server) tarGzHandler(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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files := vars["files"]
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tarfilename := fmt.Sprintf("transfersh-%d.tar.gz", uint16(time.Now().UnixNano()))
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w.Header().Set("Content-Type", "application/x-gzip")
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w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", tarfilename))
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w.Header().Set("Connection", "close")
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os := gzip.NewWriter(w)
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defer os.Close()
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zw := tar.NewWriter(os)
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defer zw.Close()
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for _, key := range strings.Split(files, ",") {
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if strings.HasPrefix(key, "/") {
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key = key[1:]
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}
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key = strings.Replace(key, "\\", "/", -1)
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token := strings.Split(key, "/")[0]
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filename := sanitize.Path(strings.Split(key, "/")[1])
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reader, _, contentLength, err := s.storage.Get(token, filename)
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if err != nil {
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if s.storage.IsNotExist(err) {
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http.Error(w, "File not found", 404)
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return
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} else {
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log.Printf("%s", err.Error())
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http.Error(w, "Could not retrieve file.", 500)
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return
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}
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}
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defer reader.Close()
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header := &tar.Header{
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Name: strings.Split(key, "/")[1],
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Size: int64(contentLength),
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}
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err = zw.WriteHeader(header)
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if err != nil {
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log.Printf("%s", err.Error())
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http.Error(w, "Internal server error.", 500)
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return
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}
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if _, err = io.Copy(zw, reader); err != nil {
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log.Printf("%s", err.Error())
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http.Error(w, "Internal server error.", 500)
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return
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}
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}
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}
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func (s *Server) tarHandler(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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files := vars["files"]
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tarfilename := fmt.Sprintf("transfersh-%d.tar", uint16(time.Now().UnixNano()))
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w.Header().Set("Content-Type", "application/x-tar")
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w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", tarfilename))
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w.Header().Set("Connection", "close")
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zw := tar.NewWriter(w)
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defer zw.Close()
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for _, key := range strings.Split(files, ",") {
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token := strings.Split(key, "/")[0]
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filename := strings.Split(key, "/")[1]
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reader, _, contentLength, err := s.storage.Get(token, filename)
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if err != nil {
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if s.storage.IsNotExist(err) {
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http.Error(w, "File not found", 404)
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return
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} else {
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log.Printf("%s", err.Error())
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http.Error(w, "Could not retrieve file.", 500)
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return
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}
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}
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defer reader.Close()
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header := &tar.Header{
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Name: strings.Split(key, "/")[1],
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Size: int64(contentLength),
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}
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|
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err = zw.WriteHeader(header)
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if err != nil {
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log.Printf("%s", err.Error())
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http.Error(w, "Internal server error.", 500)
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return
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}
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if _, err = io.Copy(zw, reader); err != nil {
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log.Printf("%s", err.Error())
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http.Error(w, "Internal server error.", 500)
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return
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}
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}
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}
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|
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func (s *Server) getHandler(w http.ResponseWriter, r *http.Request) {
|
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vars := mux.Vars(r)
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|
|
token := vars["token"]
|
|
filename := vars["filename"]
|
|
|
|
reader, contentType, contentLength, err := s.storage.Get(token, filename)
|
|
if err != nil {
|
|
if s.storage.IsNotExist(err) {
|
|
http.Error(w, "File not found", 404)
|
|
return
|
|
} else {
|
|
log.Printf("%s", err.Error())
|
|
http.Error(w, "Could not retrieve file.", 500)
|
|
return
|
|
}
|
|
}
|
|
|
|
defer reader.Close()
|
|
|
|
w.Header().Set("Content-Type", contentType)
|
|
w.Header().Set("Content-Length", strconv.FormatUint(contentLength, 10))
|
|
w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))
|
|
w.Header().Set("Connection", "close")
|
|
|
|
if _, err = io.Copy(w, reader); err != nil {
|
|
log.Printf("%s", err.Error())
|
|
http.Error(w, "Error occurred copying to output stream", 500)
|
|
return
|
|
}
|
|
}
|
|
|
|
func (s *Server) RedirectHandler(h http.Handler) http.HandlerFunc {
|
|
return func(w http.ResponseWriter, r *http.Request) {
|
|
if !s.forceHTTPs {
|
|
// we don't want to enforce https
|
|
} else if r.URL.Path == "/health.html" {
|
|
// health check url won't redirect
|
|
} else if strings.HasSuffix(ipAddrFromRemoteAddr(r.Host), ".onion") {
|
|
// .onion addresses cannot get a valid certificate, so don't redirect
|
|
} else if r.Header.Get("X-Forwarded-Proto") == "https" {
|
|
} else if r.URL.Scheme == "https" {
|
|
} else {
|
|
u := *r.URL
|
|
u.Scheme = "https"
|
|
|
|
http.Redirect(w, r, u.String(), http.StatusPermanentRedirect)
|
|
return
|
|
}
|
|
|
|
h.ServeHTTP(w, r)
|
|
}
|
|
}
|
|
|
|
// Create a log handler for every request it receives.
|
|
func LoveHandler(h http.Handler) http.HandlerFunc {
|
|
return func(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("x-made-with", "<3 by DutchCoders")
|
|
w.Header().Set("x-served-by", "Proudly served by DutchCoders")
|
|
w.Header().Set("Server", "Transfer.sh HTTP Server 1.0")
|
|
h.ServeHTTP(w, r)
|
|
}
|
|
}
|