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/
auth.go
125 lines (104 loc) · 2.84 KB
/
auth.go
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package main
import (
"crypto/rand"
"fmt"
"net/http"
"time"
"github.com/julienschmidt/httprouter"
"golang.org/x/crypto/bcrypt"
)
// GetAuth Get auth page route
func GetAuth(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
templateManager.RenderView(w, r, "auth", nil, nil)
}
// PostAuth Post auth request route
func PostAuth(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
r.ParseForm()
authType := r.Form.Get("type")
username := r.Form.Get("username")
password := r.Form.Get("password")
errors := []string{}
if len(username) < 3 {
errors = append(errors, "Username must be over 3 charactesr")
} else if len(username) > 32 {
errors = append(errors, "Username must be under 32 charactesr")
}
if len(password) < 8 {
errors = append(errors, "Password must be over 8 charactesr")
} else if len(password) > 256 {
errors = append(errors, "Username must be under 256 charactesr")
}
if len([]string{}) > 0 {
templateManager.RenderView(w, r, "auth", []string{}, nil)
}
// Get user
user := &User{
Username: username,
}
var count int
db.Where(user).First(user).Count(&count)
if authType == "login" {
// Check user exist
if count == 0 {
// User doesn't exist
templateManager.RenderView(w, r, "auth", []string{"Wrong username"}, nil)
return
}
// Comparing the password with the hash
err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(password))
if err != nil {
// Password does not match
templateManager.RenderView(w, r, "auth", []string{"Wrong password"}, nil)
return
}
} else if authType == "register" {
// Check user doesn't exist
if count != 0 {
templateManager.RenderView(w, r, "auth", []string{"Username exist"}, nil)
return
}
// Make new user
hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
if err != nil {
panic(err)
}
user = &User{
Username: username,
Password: string(hashedPassword),
}
db.Create(user)
} else {
templateManager.RenderView(w, r, "auth", nil, nil)
return
}
// Create token
tokenBytes := make([]byte, 32)
if _, err := rand.Read(tokenBytes); err != nil {
panic(err)
}
token := fmt.Sprintf("%X", tokenBytes)
session := &Session{
UserID: user.ID,
Token: token,
LoginTime: time.Now(),
LastSeenTime: time.Now(),
}
db.Create(session)
sessionStore, err := sessionManager.cookieStore.Get(r, "auth")
if err != nil {
panic(err)
}
sessionStore.Values["token"] = token
sessionStore.Save(r, w)
// Redirect to home
http.Redirect(w, r, "/", http.StatusSeeOther)
}
func GetLogout(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
sessionStore, err := sessionManager.cookieStore.Get(r, "auth")
if err != nil {
panic(err)
}
delete(sessionStore.Values, "token")
sessionStore.Save(r, w)
http.Redirect(w, r, "/", http.StatusSeeOther)
}