262 lines
7.9 KiB
Go
262 lines
7.9 KiB
Go
package admin
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import (
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"context"
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"fmt"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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"time"
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"arimelody-web/discord"
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"arimelody-web/global"
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musicDB "arimelody-web/music/controller"
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musicModel "arimelody-web/music/model"
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)
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type loginData struct {
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DiscordURI string
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Token string
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}
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func Handler() http.Handler {
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mux := http.NewServeMux()
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mux.Handle("/login", LoginHandler())
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mux.Handle("/logout", MustAuthorise(LogoutHandler()))
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mux.Handle("/static/", http.StripPrefix("/static", staticHandler()))
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mux.Handle("/release/", MustAuthorise(http.StripPrefix("/release", serveRelease())))
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mux.Handle("/artist/", MustAuthorise(http.StripPrefix("/artist", serveArtist())))
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mux.Handle("/track/", MustAuthorise(http.StripPrefix("/track", serveTrack())))
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mux.Handle("/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path != "/" {
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http.NotFound(w, r)
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return
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}
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session := GetSession(r)
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if session == nil {
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http.Redirect(w, r, "/admin/login", http.StatusFound)
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return
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}
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releases, err := musicDB.GetAllReleases(global.DB, false, 0, true)
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if err != nil {
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fmt.Printf("FATAL: Failed to pull releases: %s\n", err)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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artists, err := musicDB.GetAllArtists(global.DB)
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if err != nil {
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fmt.Printf("FATAL: Failed to pull artists: %s\n", err)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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tracks, err := musicDB.GetOrphanTracks(global.DB)
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if err != nil {
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fmt.Printf("FATAL: Failed to pull orphan tracks: %s\n", err)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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type IndexData struct {
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Releases []*musicModel.Release
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Artists []*musicModel.Artist
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Tracks []*musicModel.Track
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}
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err = pages["index"].Execute(w, IndexData{
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Releases: releases,
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Artists: artists,
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Tracks: tracks,
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})
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if err != nil {
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fmt.Printf("Error executing template: %s\n", err)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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}))
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return mux
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}
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func MustAuthorise(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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session := GetSession(r)
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if session == nil {
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http.Error(w, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
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return
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}
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ctx := context.WithValue(r.Context(), "session", session)
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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func GetSession(r *http.Request) *Session {
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if ADMIN_BYPASS {
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return &Session{}
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}
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var token = ""
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// is the session token in context?
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var ctx_session = r.Context().Value("session")
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if ctx_session != nil {
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token = ctx_session.(*Session).Token
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}
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// okay, is it in the auth header?
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if token == "" {
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if strings.HasPrefix(r.Header.Get("Authorization"), "Bearer ") {
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token = r.Header.Get("Authorization")[7:]
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}
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}
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// finally, is it in the cookie?
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if token == "" {
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cookie, err := r.Cookie("token")
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if err != nil {
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return nil
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}
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token = cookie.Value
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}
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var session *Session = nil
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for _, s := range sessions {
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if s.Expires.Before(time.Now()) {
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// expired session. remove it from the list!
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new_sessions := []*Session{}
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for _, ns := range sessions {
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if ns.Token == s.Token {
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continue
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}
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new_sessions = append(new_sessions, ns)
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}
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sessions = new_sessions
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continue
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}
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if s.Token == token {
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session = s
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break
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}
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}
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return session
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}
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func LoginHandler() http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if !discord.CREDENTIALS_PROVIDED || ADMIN_ID_DISCORD == "" {
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http.Error(w, http.StatusText(http.StatusServiceUnavailable), http.StatusServiceUnavailable)
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return
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}
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fmt.Println(discord.CLIENT_ID)
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fmt.Println(discord.API_ENDPOINT)
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fmt.Println(discord.REDIRECT_URI)
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code := r.URL.Query().Get("code")
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if code == "" {
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pages["login"].Execute(w, loginData{DiscordURI: discord.REDIRECT_URI})
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return
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}
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auth_token, err := discord.GetOAuthTokenFromCode(code)
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if err != nil {
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fmt.Printf("Failed to retrieve discord access token: %s\n", err)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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discord_user, err := discord.GetDiscordUserFromAuth(auth_token)
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if err != nil {
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fmt.Printf("Failed to retrieve discord user information: %s\n", err)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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if discord_user.ID != ADMIN_ID_DISCORD {
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// TODO: unauthorized user; revoke the token
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fmt.Printf("Unauthorized login attempted: %s\n", discord_user.ID)
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http.Error(w, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
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return
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}
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// login success!
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session := createSession(discord_user.Username, time.Now().Add(24 * time.Hour))
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sessions = append(sessions, &session)
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cookie := http.Cookie{}
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cookie.Name = "token"
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cookie.Value = session.Token
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cookie.Expires = time.Now().Add(24 * time.Hour)
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if strings.HasPrefix(global.HTTP_DOMAIN, "https") {
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cookie.Secure = true
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}
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cookie.HttpOnly = true
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cookie.Path = "/"
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http.SetCookie(w, &cookie)
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err = pages["login"].Execute(w, loginData{Token: session.Token})
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if err != nil {
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fmt.Printf("Error rendering admin login page: %s\n", err)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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})
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}
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func LogoutHandler() http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.NotFound(w, r)
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return
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}
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session := GetSession(r)
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// remove this session from the list
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sessions = func (token string) []*Session {
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new_sessions := []*Session{}
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for _, session := range sessions {
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if session.Token != token {
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new_sessions = append(new_sessions, session)
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}
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}
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return new_sessions
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}(session.Token)
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err := pages["logout"].Execute(w, nil)
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if err != nil {
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fmt.Printf("Error rendering admin logout page: %s\n", err)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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})
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}
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func staticHandler() http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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info, err := os.Stat(filepath.Join("admin", "static", filepath.Clean(r.URL.Path)))
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// does the file exist?
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if err != nil {
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if os.IsNotExist(err) {
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http.NotFound(w, r)
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return
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}
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}
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// is thjs a directory? (forbidden)
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if info.IsDir() {
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http.NotFound(w, r)
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return
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}
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http.FileServer(http.Dir(filepath.Join("admin", "static"))).ServeHTTP(w, r)
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})
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}
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