SimpleCloudNotifier/server/logic/application.go

256 lines
6.6 KiB
Go

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.InternAPIError(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.InternAPIError(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.InternAPIError(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.InternAPIError(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.InternAPIError(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
}
}