/
password.go
97 lines (81 loc) · 2.12 KB
/
password.go
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package main
import (
"fmt"
"net/http"
"golang.org/x/crypto/bcrypt"
)
func (a Account) defaultPassword() string {
return fmt.Sprintf(`%s%02d`, a.Class.Name, a.Number)
}
func generatePassword(password string) []byte {
if password == "" {
return []byte{}
}
pwd, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
if err != nil {
panic(err)
}
return pwd
}
func (a Account) login(password string) bool {
if a.EmptyPassword() {
return a.defaultPassword() == password
}
return bcrypt.CompareHashAndPassword(a.Password, []byte(password)) == nil
}
func (a Account) EmptyPassword() bool {
return len(a.Password) == 0
}
// 重設密碼
func (h Handler) resetPassword(w http.ResponseWriter, r *http.Request) {
acct, _ := session(r)
account, err := h.getAccount(r.FormValue("account_id"))
if err == AccountNotFound {
account = acct
}
if !accountPermission(acct, account) {
w.WriteHeader(403)
h.resetPage(w, addMessage(r, "您沒有權限變更 "+account.Name+" 的密碼"))
return
}
current := r.FormValue("current_password")
new := r.FormValue("new_password")
if acct.ID == account.ID {
err = account.resetSelfPassword(current, new)
} else {
if acct.login(current) {
account.Password = []byte{}
} else {
err = WrongPassword
}
}
if err == WrongPassword {
h.resetPage(w, addMessage(r, WrongPassword.Error()))
return
}
if err := h.db.Save(&account).Error; err != nil {
w.WriteHeader(500)
h.resetPage(w, addMessage(r, err.Error()))
return
}
h.message(w, r, "重設密碼成功", "已重設 "+account.Name+" 的密碼")
}
func (a *Account) resetSelfPassword(current, new string) error {
if !a.EmptyPassword() && !a.login(current) {
return WrongPassword
}
a.Password = generatePassword(new)
return nil
}
func (h Handler) resetPage(w http.ResponseWriter, r *http.Request) {
acct, _ := session(r)
account, err := h.getAccount(r.FormValue("account_id"))
if err == AccountNotFound {
account = acct
}
if !accountPermission(acct, account) {
h.message(w, r, "權限不足", "您沒有權限變更"+account.Name+"的密碼")
return
}
h.HTML(w, r, "reset.htm", account)
}