package logic import ( scn "blackforestbytes.com/simplecloudnotifier" "blackforestbytes.com/simplecloudnotifier/api/apierr" "blackforestbytes.com/simplecloudnotifier/common/ginresp" "blackforestbytes.com/simplecloudnotifier/db" "blackforestbytes.com/simplecloudnotifier/firebase" "blackforestbytes.com/simplecloudnotifier/models" "context" "github.com/gin-gonic/gin" "github.com/gin-gonic/gin/binding" "github.com/rs/zerolog/log" "gogs.mikescher.com/BlackForestBytes/goext/langext" "math/rand" "net" "net/http" "os" "os/signal" "regexp" "strings" "syscall" "time" ) type Application struct { Config scn.Config Gin *gin.Engine Database *db.Database Firebase *firebase.FBConnector DefaultChannel string Jobs []Job } func NewApp(db *db.Database) *Application { return &Application{ Database: db, DefaultChannel: "main", } } func (app *Application) Init(cfg scn.Config, g *gin.Engine, fb *firebase.FBConnector, jobs []Job) { app.Config = cfg app.Gin = g app.Firebase = fb app.Jobs = jobs } func (app *Application) Run() { httpserver := &http.Server{ Addr: net.JoinHostPort(app.Config.ServerIP, app.Config.ServerPort), Handler: app.Gin, } errChan := make(chan error) go func() { log.Info().Str("address", httpserver.Addr).Msg("HTTP-Server started on http://localhost:" + app.Config.ServerPort) errChan <- httpserver.ListenAndServe() }() stop := make(chan os.Signal, 1) signal.Notify(stop, os.Interrupt, syscall.SIGTERM) for _, job := range app.Jobs { job.Start() } select { case <-stop: ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second) defer cancel() log.Info().Msg("Stopping HTTP-Server") err := httpserver.Shutdown(ctx) if err != nil { log.Info().Err(err).Msg("Error while stopping the http-server") } else { log.Info().Msg("Stopped HTTP-Server") } case err := <-errChan: log.Error().Err(err).Msg("HTTP-Server failed") } for _, job := range app.Jobs { job.Start() } } func (app *Application) GenerateRandomAuthKey() string { charset := "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" k := "" for i := 0; i < 64; i++ { k += string(charset[rand.Int()%len(charset)]) } return k } func (app *Application) QuotaMax(ispro bool) int { if ispro { return 1000 } else { return 50 } } func (app *Application) VerifyProToken(token string) (bool, error) { return false, nil //TODO implement pro verification } func (app *Application) Migrate() error { ctx, cancel := context.WithTimeout(context.Background(), 24*time.Second) defer cancel() return app.Database.Migrate(ctx) } func (app *Application) StartRequest(g *gin.Context, uri any, query any, body any, form any) (*AppContext, *ginresp.HTTPResponse) { if uri != nil { if err := g.ShouldBindUri(uri); err != nil { return nil, langext.Ptr(ginresp.APIError(g, 400, apierr.BINDFAIL_URI_PARAM, "Failed to read uri", err)) } } if query != nil { if err := g.ShouldBindQuery(query); err != nil { return nil, langext.Ptr(ginresp.APIError(g, 400, apierr.BINDFAIL_QUERY_PARAM, "Failed to read query", err)) } } if body != nil && g.Request.Header.Get("Content-Type") == "application/javascript" { if err := g.ShouldBindJSON(body); err != nil { return nil, langext.Ptr(ginresp.APIError(g, 400, apierr.BINDFAIL_BODY_PARAM, "Failed to read body", err)) } } if form != nil && g.Request.Header.Get("Content-Type") == "multipart/form-data" { if err := g.ShouldBindWith(form, binding.Form); err != nil { return nil, langext.Ptr(ginresp.APIError(g, 400, apierr.BINDFAIL_BODY_PARAM, "Failed to read multipart-form", err)) } } ictx, cancel := context.WithTimeout(context.Background(), app.Config.RequestTimeout) actx := CreateAppContext(g, ictx, cancel) authheader := g.GetHeader("Authorization") perm, err := app.getPermissions(actx, authheader) if err != nil { cancel() return nil, langext.Ptr(ginresp.APIError(g, 400, apierr.PERM_QUERY_FAIL, "Failed to determine permissions", err)) } actx.permissions = perm return actx, nil } func (app *Application) NewSimpleTransactionContext(timeout time.Duration) *SimpleContext { ictx, cancel := context.WithTimeout(context.Background(), timeout) return CreateSimpleContext(ictx, cancel) } func (app *Application) getPermissions(ctx *AppContext, hdr string) (PermissionSet, error) { if hdr == "" { return NewEmptyPermissions(), nil } if !strings.HasPrefix(hdr, "SCN ") { return NewEmptyPermissions(), nil } key := strings.TrimSpace(hdr[4:]) user, err := app.Database.GetUserByKey(ctx, key) if err != nil { return PermissionSet{}, err } if user != nil && user.SendKey == key { return PermissionSet{UserID: langext.Ptr(user.UserID), KeyType: PermKeyTypeUserSend}, nil } if user != nil && user.ReadKey == key { return PermissionSet{UserID: langext.Ptr(user.UserID), KeyType: PermKeyTypeUserRead}, nil } if user != nil && user.AdminKey == key { return PermissionSet{UserID: langext.Ptr(user.UserID), KeyType: PermKeyTypeUserAdmin}, nil } return NewEmptyPermissions(), nil } func (app *Application) GetOrCreateChannel(ctx *AppContext, userid int64, chanName string) (models.Channel, error) { chanName = app.NormalizeChannelName(chanName) existingChan, err := app.Database.GetChannelByName(ctx, userid, chanName) if err != nil { return models.Channel{}, err } if existingChan != nil { return *existingChan, nil } subscribeKey := app.GenerateRandomAuthKey() sendKey := app.GenerateRandomAuthKey() newChan, err := app.Database.CreateChannel(ctx, userid, chanName, subscribeKey, sendKey) if err != nil { return models.Channel{}, err } _, err = app.Database.CreateSubscription(ctx, userid, newChan, true) if err != nil { return models.Channel{}, err } return newChan, nil } func (app *Application) NormalizeChannelName(v string) string { rex := regexp.MustCompile("[^[:alnum:]\\-_]") v = strings.TrimSpace(v) v = strings.ToLower(v) v = rex.ReplaceAllString(v, "") return v } func (app *Application) NormalizeUsername(v string) string { rex := regexp.MustCompile("[^[:alnum:]\\-_ ]") v = strings.TrimSpace(v) v = rex.ReplaceAllString(v, "") return v } func (app *Application) DeliverMessage(ctx context.Context, client models.Client, msg models.Message) (*string, error) { if client.FCMToken != nil { fcmDelivID, err := app.Firebase.SendNotification(ctx, client, msg) if err != nil { log.Warn().Int64("SCNMessageID", msg.SCNMessageID).Int64("ClientID", client.ClientID).Err(err).Msg("FCM Delivery failed") return nil, err } return langext.Ptr(fcmDelivID), nil } else { return langext.Ptr(""), nil } }