middleware/middleware.go (raw)
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package middleware
import (
"context"
"fmt"
"net/http"
"nilfm.cc/git/quartzgun/auth"
"nilfm.cc/git/quartzgun/cookie"
)
func Protected(next http.Handler, method string, userStore auth.UserStore, login string) http.Handler {
handlerFunc := func(w http.ResponseWriter, req *http.Request) {
user, err := cookie.GetToken("user", req)
if err == nil {
session, err := cookie.GetToken("session", req)
if err == nil {
login, err := userStore.ValidateUser(user, session)
if err == nil && login {
fmt.Printf("authorized!\n")
fmt.Printf("user: %s, session: %s\n", user, session)
req.Method = method
next.ServeHTTP(w, req)
return
}
}
}
fmt.Printf("unauthorized...\n")
req.Method = http.MethodGet
http.Redirect(w, req, login, http.StatusSeeOther)
}
return http.HandlerFunc(handlerFunc)
}
func Bunt(next string, userStore auth.UserStore, denied string) http.Handler {
handlerFunc := func(w http.ResponseWriter, req *http.Request) {
user, err := cookie.GetToken("user", req)
if err == nil {
err := auth.Logout(
user,
userStore,
w)
if err == nil {
req.Method = http.MethodGet
http.Redirect(w, req, next, http.StatusSeeOther)
return
}
}
req.Method = http.MethodGet
http.Redirect(w, req, denied, http.StatusUnauthorized)
}
return http.HandlerFunc(handlerFunc)
}
func Authorize(next string, userStore auth.UserStore, denied string) http.Handler {
handlerFunc := func(w http.ResponseWriter, req *http.Request) {
err := auth.Login(
req.FormValue("user"),
req.FormValue("password"),
userStore,
w,
24*7*52)
if err == nil {
req.Method = http.MethodGet
fmt.Printf("logged in as %s\n", req.FormValue("user"))
http.Redirect(w, req, next, http.StatusSeeOther)
} else {
fmt.Printf("login failed!\n")
req.Method = http.MethodGet
http.Redirect(w, req, denied, http.StatusSeeOther)
}
}
return http.HandlerFunc(handlerFunc)
}
func Fortify(next http.Handler) http.Handler {
handlerFunc := func(w http.ResponseWriter, req *http.Request) {
token, err := cookie.GetToken("csrfToken", req)
if err == nil {
*req = *req.WithContext(
context.WithValue(
req.Context(),
"csrfToken",
token))
}
next.ServeHTTP(w, req)
}
return http.HandlerFunc(handlerFunc)
}
func Defend(next http.Handler, userStore auth.UserStore, denied string) http.Handler {
handlerFunc := func(w http.ResponseWriter, req *http.Request) {
user, err := cookie.GetToken("user", req)
if err == nil {
masterToken, err := userStore.GetData(user, "csrfToken")
if err == nil {
cookieToken, err := cookie.GetToken("csrfToken", req)
if err == nil {
formToken := req.FormValue("csrfToken")
if formToken == cookieToken && formToken == masterToken.(string) {
next.ServeHTTP(w, req)
return
}
}
}
}
http.Redirect(w, req, denied, http.StatusUnauthorized)
}
return http.HandlerFunc(handlerFunc)
}
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