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package ext
import (
"encoding/base64"
"time"
"github.com/sirupsen/logrus"
"github.com/valyala/fasthttp"
"git.sr.ht/~gabrielgio/img/pkg/database/repository"
"git.sr.ht/~gabrielgio/img/pkg/service"
)
func HTML(next fasthttp.RequestHandler) fasthttp.RequestHandler {
return func(ctx *fasthttp.RequestCtx) {
if len(ctx.Request.Header.ContentType()) > 0 {
ctx.Response.Header.SetContentType("text/html")
}
next(ctx)
}
}
type LogMiddleware struct {
entry *logrus.Entry
}
func NewLogMiddleare(log *logrus.Entry) *LogMiddleware {
return &LogMiddleware{
entry: log,
}
}
func (l *LogMiddleware) HTTP(next fasthttp.RequestHandler) fasthttp.RequestHandler {
return func(ctx *fasthttp.RequestCtx) {
start := time.Now()
next(ctx)
elapsed := time.Since(start)
l.entry.
WithField("time", elapsed).
WithField("code", ctx.Response.StatusCode()).
WithField("path", string(ctx.Path())).
WithField("bytes", len(ctx.Response.Body())).
Info(string(ctx.Request.Header.Method()))
}
}
type AuthMiddleware struct {
key []byte
entry *logrus.Entry
}
func NewAuthMiddleware(key []byte, log *logrus.Entry) *AuthMiddleware {
return &AuthMiddleware{
key: key,
entry: log.WithField("context", "auth"),
}
}
func (a *AuthMiddleware) LoggedIn(next fasthttp.RequestHandler) fasthttp.RequestHandler {
return func(ctx *fasthttp.RequestCtx) {
path := string(ctx.Path())
if path == "/login" || path == "/initial" {
next(ctx)
return
}
redirectLogin := "/login?redirect=" + path
authBase64 := ctx.Request.Header.Cookie("auth")
if authBase64 == nil {
a.entry.Info("No auth provided")
ctx.Redirect(redirectLogin, 307)
return
}
auth, err := base64.StdEncoding.DecodeString(string(authBase64))
if err != nil {
a.entry.Error(err)
return
}
token, err := service.ReadToken(auth, a.key)
if err != nil {
a.entry.Error(err)
ctx.Redirect(redirectLogin, 307)
return
}
ctx.SetUserValue("token", token)
a.entry.
WithField("userID", token.UserID).
WithField("username", token.Username).
Info("user recognized")
next(ctx)
}
}
func GetTokenFromCtx(ctx *fasthttp.RequestCtx) *service.Token {
tokenValue := ctx.UserValue("token")
if token, ok := tokenValue.(*service.Token); ok {
return token
}
return nil
}
type InitialSetupMiddleware struct {
userRepository repository.UserRepository
}
func NewInitialSetupMiddleware(userRepository repository.UserRepository) *InitialSetupMiddleware {
return &InitialSetupMiddleware{
userRepository: userRepository,
}
}
func (i *InitialSetupMiddleware) Check(next fasthttp.RequestHandler) fasthttp.RequestHandler {
return func(ctx *fasthttp.RequestCtx) {
// if user has been set to context it is logged in already
_, ok := ctx.UserValue("token").(*service.Token)
if ok {
next(ctx)
return
}
path := string(ctx.Path())
if path == "/initial" {
next(ctx)
return
}
exists, err := i.userRepository.Any(ctx)
if err != nil {
InternalServerError(ctx, err)
return
}
if exists {
next(ctx)
return
}
ctx.Redirect("/initial", 307)
}
}
|
