package main import ( "context" "crypto/rand" "encoding/base64" "encoding/json" "flag" "fmt" "io" "io/ioutil" "log" "net/http" "os" "os/signal" "path/filepath" "time" "github.com/gin-contrib/pprof" "github.com/gin-contrib/static" "github.com/gin-gonic/gin" "github.com/lithammer/shortuuid/v3" "gopkg.in/ini.v1" ) // Username is JWT! type User struct { UserID string `json:"id"` Username string `json:"username"` Password string `json:"password"` } type appContext struct { // defaults *Config config *ini.File config_path string configBase_path string configBase map[string]interface{} data_path string local_path string cssFile string bsVersion int jellyfinLogin bool users []User invalidTokens []string jf *Jellyfin authJf *Jellyfin datePattern string timePattern string storage Storage validator Validator email Emailer info, debug, err *log.Logger host string port int version string quit chan os.Signal } func GenerateSecret(length int) (string, error) { bytes := make([]byte, length) _, err := rand.Read(bytes) if err != nil { return "", err } return base64.URLEncoding.EncodeToString(bytes), err } func setGinLogger(router *gin.Engine, debugMode bool) { if debugMode { router.Use(gin.LoggerWithFormatter(func(param gin.LogFormatterParams) string { return fmt.Sprintf("[GIN/DEBUG] %s: %s(%s) => %d in %s; %s\n", param.TimeStamp.Format("15:04:05"), param.Method, param.Path, param.StatusCode, param.Latency, func() string { if param.ErrorMessage != "" { return "Error: " + param.ErrorMessage } return "" }(), ) })) } else { router.Use(gin.LoggerWithFormatter(func(param gin.LogFormatterParams) string { return fmt.Sprintf("[GIN] %s(%s) => %d\n", param.Method, param.Path, param.StatusCode, ) })) } } func main() { // app encompasses essentially all useful functions. app := new(appContext) /* set default config, data and local paths also, confusing naming here. data_path is not the internal 'data' directory, rather the users .config/jfa-go folder. local_path is the internal 'data' directory. */ userConfigDir, _ := os.UserConfigDir() app.data_path = filepath.Join(userConfigDir, "jfa-go") app.config_path = filepath.Join(app.data_path, "config.ini") executable, _ := os.Executable() app.local_path = filepath.Join(filepath.Dir(executable), "data") app.info = log.New(os.Stdout, "[INFO] ", log.Ltime) app.err = log.New(os.Stdout, "[ERROR] ", log.Ltime|log.Lshortfile) dataPath := flag.String("data", app.data_path, "alternate path to data directory.") configPath := flag.String("config", app.config_path, "alternate path to config file.") host := flag.String("host", "", "alternate address to host web ui on.") port := flag.Int("port", 0, "alternate port to host web ui on.") debug := flag.Bool("debug", false, "Enables debug logging and exposes pprof.") flag.Parse() // attempt to apply command line flags correctly if app.config_path == *configPath && app.data_path != *dataPath { app.data_path = *dataPath app.config_path = filepath.Join(app.data_path, "config.ini") } else if app.config_path != *configPath && app.data_path == *dataPath { app.config_path = *configPath } else { app.config_path = *configPath app.data_path = *dataPath } // env variables are necessary because syscall.Exec for self-restarts doesn't doesn't work with arguments for some reason. if v := os.Getenv("JFA_CONFIGPATH"); v != "" { app.config_path = v } if v := os.Getenv("JFA_DATAPATH"); v != "" { app.data_path = v } os.Setenv("JFA_CONFIGPATH", app.config_path) os.Setenv("JFA_DATAPATH", app.data_path) var firstRun bool if _, err := os.Stat(app.data_path); os.IsNotExist(err) { os.Mkdir(app.data_path, 0700) } if _, err := os.Stat(app.config_path); os.IsNotExist(err) { firstRun = true dConfigPath := filepath.Join(app.local_path, "config-default.ini") var dConfig *os.File dConfig, err = os.Open(dConfigPath) if err != nil { app.err.Fatalf("Couldn't find default config file \"%s\"", dConfigPath) } defer dConfig.Close() var nConfig *os.File nConfig, err := os.Create(app.config_path) if err != nil { app.err.Fatalf("Couldn't open config file for writing: \"%s\"", app.config_path) } defer nConfig.Close() _, err = io.Copy(nConfig, dConfig) if err != nil { app.err.Fatalf("Couldn't copy default config. To do this manually, copy\n%s\nto\n%s", dConfigPath, app.config_path) } app.info.Printf("Copied default configuration to \"%s\"", app.config_path) } var debugMode bool var address string if app.loadConfig() != nil { app.err.Fatalf("Failed to load config file \"%s\"", app.config_path) } app.version = app.config.Section("jellyfin").Key("version").String() // read from config... debugMode = app.config.Section("ui").Key("debug").MustBool(false) // then from flag if *debug { debugMode = true } if debugMode { app.info.Println("WARNING: Don't use debug mode in production, as it exposes pprof on the network.") app.debug = log.New(os.Stdout, "[DEBUG] ", log.Ltime|log.Lshortfile) } else { app.debug = log.New(ioutil.Discard, "", 0) } if !firstRun { app.host = app.config.Section("ui").Key("host").String() app.port = app.config.Section("ui").Key("port").MustInt(8056) if *host != app.host && *host != "" { app.host = *host } if *port != app.port && *port > 0 { app.port = *port } if h := os.Getenv("JFA_HOST"); h != "" { app.host = h if p := os.Getenv("JFA_PORT"); p != "" { var port int _, err := fmt.Sscan(p, &port) if err == nil { app.port = port } } } address = fmt.Sprintf("%s:%d", app.host, app.port) app.debug.Printf("Loaded config file \"%s\"", app.config_path) if app.config.Section("ui").Key("bs5").MustBool(false) { app.cssFile = "bs5-jf.css" app.bsVersion = 5 } else { app.cssFile = "bs4-jf.css" app.bsVersion = 4 } app.debug.Println("Loading storage") app.storage.invite_path = filepath.Join(app.data_path, "invites.json") app.storage.loadInvites() app.storage.emails_path = filepath.Join(app.data_path, "emails.json") app.storage.loadEmails() app.storage.policy_path = filepath.Join(app.data_path, "user_template.json") app.storage.loadPolicy() app.storage.configuration_path = filepath.Join(app.data_path, "user_configuration.json") app.storage.loadConfiguration() app.storage.displayprefs_path = filepath.Join(app.data_path, "user_displayprefs.json") app.storage.loadDisplayprefs() app.configBase_path = filepath.Join(app.local_path, "config-base.json") config_base, _ := ioutil.ReadFile(app.configBase_path) json.Unmarshal(config_base, &app.configBase) themes := map[string]string{ "Jellyfin (Dark)": fmt.Sprintf("bs%d-jf.css", app.bsVersion), "Bootstrap (Light)": fmt.Sprintf("bs%d.css", app.bsVersion), "Custom CSS": "", } if val, ok := themes[app.config.Section("ui").Key("theme").String()]; ok { app.cssFile = val } app.debug.Printf("Using css file \"%s\"", app.cssFile) secret, err := GenerateSecret(16) if err != nil { app.err.Fatal(err) } os.Setenv("JFA_SECRET", secret) app.jellyfinLogin = true if val, _ := app.config.Section("ui").Key("jellyfin_login").Bool(); !val { app.jellyfinLogin = false user := User{} user.UserID = shortuuid.New() user.Username = app.config.Section("ui").Key("username").String() user.Password = app.config.Section("ui").Key("password").String() app.users = append(app.users, user) } else { app.debug.Println("Using Jellyfin for authentication") } server := app.config.Section("jellyfin").Key("server").String() app.jf, _ = newJellyfin(server, "jfa-go", app.version, "hrfee-arch", "hrfee-arch") var status int _, status, err = app.jf.authenticate(app.config.Section("jellyfin").Key("username").String(), app.config.Section("jellyfin").Key("password").String()) if status != 200 || err != nil { app.err.Fatalf("Failed to authenticate with Jellyfin @ %s: Code %d", server, status) } app.info.Printf("Authenticated with %s", server) app.authJf, _ = newJellyfin(server, "jfa-go", app.version, "auth", "auth") app.loadStrftime() validatorConf := ValidatorConf{ "characters": app.config.Section("password_validation").Key("min_length").MustInt(0), "uppercase characters": app.config.Section("password_validation").Key("upper").MustInt(0), "lowercase characters": app.config.Section("password_validation").Key("lower").MustInt(0), "numbers": app.config.Section("password_validation").Key("number").MustInt(0), "special characters": app.config.Section("password_validation").Key("special").MustInt(0), } if !app.config.Section("password_validation").Key("enabled").MustBool(false) { for key := range validatorConf { validatorConf[key] = 0 } } app.validator.init(validatorConf) app.email.init(app) inviteDaemon := NewRepeater(time.Duration(60*time.Second), app) go inviteDaemon.Run() if app.config.Section("password_resets").Key("enabled").MustBool(false) { go app.StartPWR() } } else { debugMode = false address = "0.0.0.0:8056" } app.info.Println("Loading routes") if debugMode { gin.SetMode(gin.DebugMode) } else { gin.SetMode(gin.ReleaseMode) } router := gin.New() setGinLogger(router, debugMode) router.Use(gin.Recovery()) router.Use(static.Serve("/", static.LocalFile(filepath.Join(app.local_path, "static"), false))) router.LoadHTMLGlob(filepath.Join(app.local_path, "templates", "*")) router.NoRoute(app.NoRouteHandler) if debugMode { app.debug.Println("Loading pprof") pprof.Register(router) } if !firstRun { router.GET("/", app.AdminPage) router.GET("/getToken", app.getToken) router.POST("/newUser", app.NewUser) router.Use(static.Serve("/invite/", static.LocalFile(filepath.Join(app.local_path, "static"), false))) router.GET("/invite/:invCode", app.InviteProxy) api := router.Group("/", app.webAuth()) router.POST("/logout", app.Logout) api.POST("/generateInvite", app.GenerateInvite) api.GET("/getInvites", app.GetInvites) api.POST("/setNotify", app.SetNotify) api.POST("/deleteInvite", app.DeleteInvite) api.GET("/getUsers", app.GetUsers) api.POST("/modifyUsers", app.ModifyEmails) api.POST("/setDefaults", app.SetDefaults) api.GET("/getConfig", app.GetConfig) api.POST("/modifyConfig", app.ModifyConfig) app.info.Printf("Starting router @ %s", address) } else { router.GET("/", func(gc *gin.Context) { gc.HTML(200, "setup.html", gin.H{}) }) router.POST("/testJF", app.TestJF) router.POST("/modifyConfig", app.ModifyConfig) app.info.Printf("Loading setup @ %s", address) } srv := &http.Server{ Addr: address, Handler: router, } go func() { if err := srv.ListenAndServe(); err != nil { app.err.Printf("Failure serving: %s", err) } }() app.quit = make(chan os.Signal) signal.Notify(app.quit, os.Interrupt) <-app.quit app.info.Println("Shutting down...") cntx, cancel := context.WithTimeout(context.Background(), time.Second*5) defer cancel() if err := srv.Shutdown(cntx); err != nil { app.err.Fatalf("Server shutdown error: %s", err) } }