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package handlers
import (
"apjournal/internal/models"
"apjournal/pkg/utils"
"crypto/hmac"
"crypto/sha256"
"encoding/base64"
"encoding/json"
"html/template"
"net/http"
"strings"
"time"
"golang.org/x/crypto/bcrypt"
)
func abortWithError(w http.ResponseWriter, msg string) {
tmpl := template.Must(template.ParseGlob("components/*.html"))
tmpl.ExecuteTemplate(w, "error", msg)
}
func (h *Handlers) HandleSignup(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
username := r.PostFormValue("username")
if username == "" {
msg := "username not provided"
h.log.Error(msg)
abortWithError(w, msg)
return
}
password := r.PostFormValue("password")
if password == "" {
msg := "password not provided"
h.log.Error(msg)
abortWithError(w, msg)
return
}
// make sure username does not exists
cleanName := utils.RemoveSpacesFromStr(username)
hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), 8)
// create user in db
now := time.Now()
nextMidnight := time.Date(now.Year(), now.Month(), now.Day(),
0, 0, 0, 0, time.UTC).Add(time.Hour * 24)
newUser := &models.UserScore{
Username: cleanName, Password: string(hashedPassword),
BurnTime: nextMidnight, CreatedAt: now,
}
if err := h.repo.DBUserScoreCreate(newUser); err != nil {
msg := "failed to create user"
h.log.Error(msg, "user", newUser)
abortWithError(w, msg)
return
}
// login user
cookie, err := h.makeCookie(cleanName, r.RemoteAddr)
if err != nil {
h.log.Error("failed to login", "error", err)
abortWithError(w, err.Error())
return
}
http.SetCookie(w, cookie)
// http.Redirect(w, r, "/", 302)
tmpl, err := template.ParseGlob("components/*.html")
if err != nil {
abortWithError(w, err.Error())
return
}
tmpl.ExecuteTemplate(w, "main", newUser)
}
func (h *Handlers) HandleLogin(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
username := r.PostFormValue("username")
if username == "" {
msg := "username not provided"
h.log.Error(msg)
abortWithError(w, msg)
return
}
password := r.PostFormValue("password")
if password == "" {
msg := "password not provided"
h.log.Error(msg)
abortWithError(w, msg)
return
}
cleanName := utils.RemoveSpacesFromStr(username)
tmpl, err := template.ParseGlob("components/*.html")
if err != nil {
abortWithError(w, err.Error())
return
}
userScore, err := h.repo.DBUserScoreGet(cleanName)
if err != nil {
h.log.Warn("failed to find user in db", "err", err)
abortWithError(w, err.Error())
return
}
// check password
// hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), 8)
// if err != nil {
// h.log.Warn("failed to gen pass hash", "err", err)
// abortWithError(w, err.Error())
// return
// }
if err := bcrypt.CompareHashAndPassword(
[]byte(userScore.Password), []byte(password),
); err != nil {
h.log.Warn("wrong password", "err", err)
abortWithError(w, err.Error())
return
}
userScore.Actions, err = h.repo.DBActionList(cleanName)
if err != nil {
abortWithError(w, err.Error())
return
}
cookie, err := h.makeCookie(cleanName, r.RemoteAddr)
if err != nil {
h.log.Error("failed to login", "error", err)
abortWithError(w, err.Error())
return
}
http.SetCookie(w, cookie)
tmpl.ExecuteTemplate(w, "main", userScore)
}
func (h *Handlers) makeCookie(username string, remote string) (*http.Cookie, error) {
// secret
// Create a new random session token
// sessionToken := xid.New().String()
sessionToken := "token"
expiresAt := time.Now().Add(time.Duration(h.cfg.SessionLifetime) * time.Second)
// Set the token in the session map, along with the session information
session := &models.Session{
Username: username,
Expiry: expiresAt,
}
cookieName := "session_token"
// hmac to protect cookies
hm := hmac.New(sha256.New, []byte(h.cfg.CookieSecret))
hm.Write([]byte(cookieName))
hm.Write([]byte(sessionToken))
signature := hm.Sum(nil)
// b64 enc to avoid non-ascii
cookieValue := base64.URLEncoding.EncodeToString([]byte(
string(signature) + sessionToken))
cookie := &http.Cookie{
Name: cookieName,
Value: cookieValue,
Secure: true,
HttpOnly: true,
SameSite: http.SameSiteNoneMode,
Domain: h.cfg.ServerConfig.Host,
}
h.log.Info("check remote addr for cookie set",
"remote", remote, "session", session)
if strings.Contains(remote, "192.168.0") {
// no idea what is going on
cookie.Domain = "192.168.0.101"
}
// set ctx?
// set user in session
if err := h.cacheSetSession(sessionToken, session); err != nil {
return nil, err
}
return cookie, nil
}
func (h *Handlers) cacheGetSession(key string) (*models.Session, error) {
userSessionB, err := h.mc.Get(key)
if err != nil {
return nil, err
}
var us *models.Session
if err := json.Unmarshal(userSessionB, &us); err != nil {
return nil, err
}
return us, nil
}
func (h *Handlers) cacheSetSession(key string, session *models.Session) error {
sesb, err := json.Marshal(session)
if err != nil {
return err
}
h.mc.Set(key, sesb)
// expire in 10 min
h.mc.Expire(key, 10*60)
return nil
}
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