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login.go
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login.go
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/*
Copyright (C) 2024 Pagefault Games
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package account
import (
"bytes"
"crypto/rand"
"database/sql"
"encoding/base64"
"fmt"
"github.com/Greenlamp2/rogueserver/db"
)
type LoginResponse GenericAuthResponse
// /account/login - log into account
func Login(username, password string) (LoginResponse, error) {
var response LoginResponse
if !isValidUsername(username) {
return response, fmt.Errorf("invalid username")
}
if len(password) < 6 {
return response, fmt.Errorf("invalid password")
}
key, salt, err := db.FetchAccountKeySaltFromUsername(username)
if err != nil {
if err == sql.ErrNoRows {
return response, fmt.Errorf("account doesn't exist")
}
return response, err
}
if !bytes.Equal(key, deriveArgon2IDKey([]byte(password), salt)) {
return response, fmt.Errorf("password doesn't match")
}
token := make([]byte, TokenSize)
_, err = rand.Read(token)
if err != nil {
return response, fmt.Errorf("failed to generate token: %s", err)
}
err = db.AddAccountSession(username, token)
if err != nil {
return response, fmt.Errorf("failed to add account session")
}
response.Token = base64.StdEncoding.EncodeToString(token)
return response, nil
}