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|
package middleware
import (
"database/sql"
"log"
"net/http"
"os"
"time"
)
type AuthMiddleware struct {
Err *log.Logger
Db *sql.DB
}
func (auth *AuthMiddleware) CheckAndInvalidate(next http.HandlerFunc) http.HandlerFunc {
return http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
cookie, err := r.Cookie("paterissa_session_token")
if err != nil {
next.ServeHTTP(w, r)
return
}
stmt, err := auth.Db.Prepare("SELECT * FROM cookies WHERE content = $1;")
if err != nil {
cookie = &http.Cookie{
Name: "paterissa_session_token",
Value: "",
Path: "/",
Domain: os.Getenv("serv"),
MaxAge: -1,
HttpOnly: true,
}
http.SetCookie(w, cookie)
http.Redirect(w, r, "/", http.StatusFound)
return
}
defer stmt.Close()
var id int
var content string
var userId int
var expiration time.Time
row := stmt.QueryRow(cookie.Value)
err = row.Scan(&id, &content, &userId, &expiration)
if err != nil {
cookie = &http.Cookie{
Name: "paterissa_session_token",
Value: "",
Path: "/",
Domain: os.Getenv("serv"),
MaxAge: -1,
HttpOnly: true,
}
http.SetCookie(w, cookie)
http.Redirect(w, r, "/", http.StatusFound)
return
}
if time.Now().After(expiration) {
cookie = &http.Cookie{
Name: "paterissa_session_token",
Value: "",
Path: "/",
Domain: os.Getenv("serv"),
MaxAge: -1,
HttpOnly: true,
}
http.SetCookie(w, cookie)
http.Redirect(w, r, "/", http.StatusFound)
return
}
next.ServeHTTP(w, r)
return
})
}
func (auth *AuthMiddleware) Resolve(next http.HandlerFunc) http.HandlerFunc {
return http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
cookie, err := r.Cookie("paterissa_session_token")
if err != nil {
w.WriteHeader(http.StatusUnauthorized)
w.Write([]byte("Unauthorized"))
return
}
stmt, err := auth.Db.Prepare("SELECT * FROM cookies WHERE content = $1;")
if err != nil {
cookie = &http.Cookie{
Name: "paterissa_session_token",
Value: "",
Path: "/",
Domain: os.Getenv("serv"),
MaxAge: -1,
HttpOnly: true,
}
http.SetCookie(w, cookie)
w.Write([]byte("Unauthorized"))
auth.Err.Printf("Could not retrieve cookie from DB: %v\n", err)
http.Redirect(w, r, "/", http.StatusUnauthorized)
return
}
defer stmt.Close()
var id int
var content string
var userId int
var expiration time.Time
row := stmt.QueryRow(cookie.Value)
err = row.Scan(&id, &content, &userId, &expiration)
if err != nil {
cookie = &http.Cookie{
Name: "paterissa_session_token",
Value: "",
Path: "/",
Domain: os.Getenv("serv"),
MaxAge: -1,
HttpOnly: true,
}
http.SetCookie(w, cookie)
w.Write([]byte("Unauthorized"))
auth.Err.Printf("Could not retrieve cookie from DB: %v\n", err)
http.Redirect(w, r, "/", http.StatusUnauthorized)
return
}
if time.Now().After(expiration) {
cookie = &http.Cookie{
Name: "paterissa_session_token",
Value: "",
Path: "/",
Domain: os.Getenv("serv"),
MaxAge: -1,
HttpOnly: true,
}
http.SetCookie(w, cookie)
w.Write([]byte("Expired"))
http.Redirect(w, r, "/", http.StatusUnauthorized)
return
}
next.ServeHTTP(w, r)
return
})
}
|
