385 lines
9.0 KiB
Go
385 lines
9.0 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"html/template"
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"io"
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"log"
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"net/http"
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"net/url"
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"os"
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"strings"
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"time"
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"gitea.hbanafa.com/hesham/viddl/apkupdater"
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)
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const (
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DEFAULT_HTTP_PORT = "8080"
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DEFAULT_HTTPS_PORT = "4433"
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)
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type DownloadFormats struct {
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VideoRes string
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videoOnly bool
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audioOnly bool
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}
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type URLValidationCtx struct {
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URL string
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Valid bool
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}
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type apiMessageResponse struct {
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Message string
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}
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type Logger struct {
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Handler http.Handler
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}
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func (l *Logger) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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tNow := time.Now().UTC()
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l.Handler.ServeHTTP(w, r)
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methodString := l.getMethodLogString(r.Method)
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remote := r.RemoteAddr
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realIP := r.Header.Get("X-Real-IP")
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if realIP != "" {
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remote = realIP
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}
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log.Printf(" %s %s %s %v", remote, methodString, r.URL, time.Since(tNow))
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}
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func (l *Logger) getMethodLogString(method string) string {
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colorBlue := "\033[34m"
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colorReset := "\033[0m"
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colorRed := "\033[31m"
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colorGreen := "\033[32m"
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colorYellow := "\033[33m"
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// colorPurple := "\033[35m"
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// colorCyan := "\033[36m"
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// colorWhite := "\033[37m"
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switch method {
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case "GET": return colorBlue + "GET" + colorReset
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case "POST": return colorGreen + "POST" + colorReset
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case "DELETE": return colorRed + "DELETE" + colorReset
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case "PUT": return colorYellow + "PUT" + colorReset
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default: return method
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}
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}
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func NewLogger(handler http.Handler) *Logger {
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return &Logger{Handler: handler}
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}
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func writeJSONResponse(w http.ResponseWriter, s string) http.ResponseWriter {
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w.WriteHeader(http.StatusBadRequest)
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w.Header().Set("Content-Type", "application/json")
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jsonResp, err := json.Marshal(apiMessageResponse{Message: s})
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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return w
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}
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_, err = w.Write(jsonResp)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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return w
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}
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return w
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}
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var templates *template.Template
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// TODO: Change all this to have a unified context
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type Context struct {
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request *http.Request
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Formats []DownloadFormats
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AppURL string
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StatusCode int
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Err *error
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IsTLS bool
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DownloadURL string
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}
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func NewContext(r *http.Request) *Context {
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isTLS := false
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tls := os.Getenv("TLS")
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if tls != "" {
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isTLS = true
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}
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return &Context{
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request: r,
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StatusCode: 200,
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Formats: []DownloadFormats{
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{
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VideoRes: "720p",
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videoOnly: false,
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audioOnly: false,
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},
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},
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AppURL: r.Host,
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IsTLS: isTLS,
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}
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}
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func handleToAudio(ctx *Context, w http.ResponseWriter) http.ResponseWriter {
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log.Println("User requested audio")
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w.WriteHeader(400)
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jsonMsg, err := json.Marshal(
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apiMessageResponse{
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Message: "Audio only is not implemented",
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},
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)
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if err != nil {
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log.Println(err.Error())
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w.WriteHeader(500)
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}
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w.Write(jsonMsg)
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return w
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}
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func handleDownload(w http.ResponseWriter, r *http.Request) {
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ctx := NewContext(r)
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if r.Method != "POST" {
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w.WriteHeader(400)
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return
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}
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err := r.ParseForm()
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if err != nil {
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w.WriteHeader(400)
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return
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}
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userURL := r.FormValue("URL")
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if userURL == "" {
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w = writeJSONResponse(w, "Provide URL as query")
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return
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}
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toAudio := r.FormValue("toaudio")
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if toAudio == "on" {
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log.Println("User requested audio")
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}
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filenameChan := make(chan string)
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go GetContentFilename(userURL, filenameChan)
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downloadURL, err := getYoutubeDownloadURL(userURL)
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filename := <- filenameChan
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if err != nil {
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log.Println(err.Error())
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ctx.StatusCode = 500
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ctx.Err = &err
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err = templates.ExecuteTemplate(w,"download-result.html", ctx)
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return
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}
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ctx.DownloadURL = downloadURL
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ctx.DownloadURL = fmt.Sprintf("/download-direct?URL=%s&filename=%s",
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url.QueryEscape(ctx.DownloadURL),
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url.QueryEscape(filename),
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)
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w.Header().Add("Hx-Redirect", ctx.DownloadURL)
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}
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func handleDirectDownload(w http.ResponseWriter, r *http.Request) {
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ctx := NewContext(r)
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if r.Method != "GET" {
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w.WriteHeader(400)
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return
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}
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userURL := strings.Trim(r.URL.Query().Get("URL"), "\n")
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filename := strings.Trim(r.URL.Query().Get("filename"), "\n")
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if userURL == "" {
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log.Println("Empty URL")
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w.WriteHeader(400)
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ctx.StatusCode = 400
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if err := templates.ExecuteTemplate(w,"download-result.html", ctx); err != nil {
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log.Println(err.Error())
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}
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return
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}
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ctx.DownloadURL = userURL
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req, err := http.NewRequest("GET", ctx.DownloadURL, nil)
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if err != nil {
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log.Println(err.Error())
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ctx.StatusCode = 500
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ctx.Err = &err
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if err := templates.ExecuteTemplate(w,"download-result.html", ctx); err != nil {
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log.Println(err.Error())
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}
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return
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}
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req.Header.Set("User-Agent", "Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/117.0")
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client := http.Client{}
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dataRequest, err := client.Do(req)
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if err != nil {
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log.Println(err.Error())
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ctx.StatusCode = 500
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ctx.Err = &err
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if err := templates.ExecuteTemplate(w,"download-result.html", ctx); err != nil {
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log.Println(err.Error())
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}
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return
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}
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defer dataRequest.Body.Close()
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if dataRequest.StatusCode != 200 {
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log.Println("Failed to get content for URL", userURL)
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return
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}
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contentLength := dataRequest.Header.Get("Content-Length")
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if dataRequest.ContentLength == 0 {
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log.Println("Empty body from content url")
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w.WriteHeader(500)
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return
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}
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w.Header().Set(
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"Content-Disposition",
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fmt.Sprintf("attachment;filename=%s;", filename),
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)
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w.Header().Set("Content-Length", contentLength)
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w.WriteHeader(206)
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n, err := io.Copy(w, dataRequest.Body)
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if err != nil {
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log.Println(err.Error())
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}
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log.Printf("Copied %d bytes", n)
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}
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func handleRoot(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path != "/" && r.URL.Path != "" {
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http.Redirect(w, r, "/", http.StatusPermanentRedirect)
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return
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}
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ctx := NewContext(r)
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formats := []DownloadFormats{}
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formats = append(formats, DownloadFormats{
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VideoRes: "720p",
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audioOnly: false,
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videoOnly: false,
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})
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err := templates.ExecuteTemplate(w, "download.html", ctx)
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if err != nil {
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log.Println(err.Error())
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w.WriteHeader(500)
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return
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}
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}
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func handleValidLink(w http.ResponseWriter, r *http.Request) {
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if r.Method != "POST" {
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w.WriteHeader(400)
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return
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}
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err := r.ParseForm()
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if err != nil {
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log.Println(err.Error())
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w.WriteHeader(400)
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return
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}
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url := r.FormValue("URL")
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ctx := URLValidationCtx{
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URL: url,
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Valid: isValidURL(url),
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}
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templates.ExecuteTemplate(w, "url-validation.html", ctx)
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}
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func init() {
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log.Println("[ init ] Starting...")
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templates = template.Must(template.ParseFS(TemplatesFS , "templates/*.html"))
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log.Println("[ init ] Templates Loaded")
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}
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func main() {
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updater, err := apkupdater.InitPkgUpdater()
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if err != nil {
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log.Println("Could not init Package Updater!\n", err.Error())
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}
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updater.Run()
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handler := http.NewServeMux()
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handler.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.FS(PublicFS))))
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handler.Handle("/assets/", http.FileServer(http.FS(AssetsFS)))
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handler.HandleFunc(
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"/robots.txt",
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func(w http.ResponseWriter, r *http.Request) {
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robotsFile, err := RobotsFS.ReadFile("static/robots.txt")
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if err != nil {
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log.Println(err.Error())
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w.WriteHeader(500)
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return
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}
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w.Write(robotsFile)
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},
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)
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handler.HandleFunc(
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"/sitemap.txt",
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func(w http.ResponseWriter, r *http.Request) {
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sitemapFile, err := AssetsFS.ReadFile("assets/sitemap.txt")
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if err != nil {
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log.Println(err.Error())
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w.WriteHeader(500)
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return
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}
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w.Write(sitemapFile)
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},
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)
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handler.HandleFunc("/", handleRoot)
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handler.HandleFunc("/download", handleDownload)
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handler.HandleFunc("/download-direct", handleDirectDownload)
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handler.HandleFunc("/valid-link", handleValidLink)
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wrappedHandler := NewLogger(handler)
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srv := http.Server{
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ReadTimeout: 1 * time.Minute,
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WriteTimeout: 1 * time.Minute,
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Addr: ":" + DEFAULT_HTTP_PORT,
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Handler: wrappedHandler,
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}
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log.Printf("Starting HTTP on %s", DEFAULT_HTTP_PORT)
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log.Fatalln(srv.ListenAndServe())
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log.Println("HTTP server stopped")
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updater.Stop()
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}
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