SimpleCloudNotifier/server/logic/application.go
2022-11-18 23:12:37 +01:00

174 lines
4.4 KiB
Go

package logic
import (
scn "blackforestbytes.com/simplecloudnotifier"
"blackforestbytes.com/simplecloudnotifier/api/apierr"
"blackforestbytes.com/simplecloudnotifier/common/ginresp"
"blackforestbytes.com/simplecloudnotifier/db"
"context"
"github.com/gin-gonic/gin"
"github.com/rs/zerolog/log"
"gogs.mikescher.com/BlackForestBytes/goext/langext"
"math/rand"
"net"
"net/http"
"os"
"os/signal"
"strings"
"syscall"
"time"
)
type Application struct {
Config scn.Config
Gin *gin.Engine
Database *db.Database
}
func NewApp(db *db.Database) *Application {
return &Application{Database: db}
}
func (app *Application) Init(cfg scn.Config, g *gin.Engine) {
app.Config = cfg
app.Gin = g
}
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")
errChan <- httpserver.ListenAndServe()
}()
stop := make(chan os.Signal, 1)
signal.Notify(stop, os.Interrupt, syscall.SIGTERM)
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")
return
}
log.Info().Msg("Stopped HTTP-Server")
case err := <-errChan:
log.Error().Err(err).Msg("HTTP-Server failed")
}
}
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) (*AppContext, *ginresp.HTTPResponse) {
if body != nil {
if err := g.ShouldBindJSON(&body); err != nil {
return nil, langext.Ptr(ginresp.InternAPIError(apierr.BINDFAIL_BODY_PARAM, "Failed to read body", err))
}
}
if query != nil {
if err := g.ShouldBindQuery(&query); err != nil {
return nil, langext.Ptr(ginresp.InternAPIError(apierr.BINDFAIL_QUERY_PARAM, "Failed to read query", err))
}
}
if uri != nil {
if err := g.ShouldBindUri(&uri); err != nil {
return nil, langext.Ptr(ginresp.InternAPIError(apierr.BINDFAIL_URI_PARAM, "Failed to read uri", err))
}
}
ictx, cancel := context.WithTimeout(context.Background(), app.Config.RequestTimeout)
actx := CreateAppContext(ictx, cancel)
authheader := g.GetHeader("Authorization")
perm, err := app.getPermissions(actx, authheader)
if err != nil {
cancel()
return nil, langext.Ptr(ginresp.InternAPIError(apierr.PERM_QUERY_FAIL, "Failed to determine permissions", err))
}
actx.permissions = perm
return actx, nil
}
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{ReferenceID: langext.Ptr(user.UserID), KeyType: PermKeyTypeUserSend}, nil
}
if user != nil && user.ReadKey == key {
return PermissionSet{ReferenceID: langext.Ptr(user.UserID), KeyType: PermKeyTypeUserRead}, nil
}
if user != nil && user.AdminKey == key {
return PermissionSet{ReferenceID: langext.Ptr(user.UserID), KeyType: PermKeyTypeUserAdmin}, nil
}
channel, err := app.Database.GetChannelByKey(ctx, key)
if err != nil {
return PermissionSet{}, err
}
if channel != nil && channel.SendKey == key {
return PermissionSet{ReferenceID: langext.Ptr(channel.ChannelID), KeyType: PermKeyTypeChannelSend}, nil
}
if channel != nil && channel.SubscribeKey == key {
return PermissionSet{ReferenceID: langext.Ptr(channel.ChannelID), KeyType: PermKeyTypeChannelSub}, nil
}
return NewEmptyPermissions(), nil
}