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auth.go
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auth.go
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// Copyright 2023 Quokka Contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package parser
import (
"errors"
"strings"
)
var (
ErrAuthCommandInvalid = errors.New("parser: Auth command is invalid")
)
type AuthCommand struct {
Mechanism string
InitialResponse string
}
func NewAuthCommand(cmdAndArgs string) (*AuthCommand, error) {
if len(cmdAndArgs) < 4 || strings.ToUpper(cmdAndArgs[:4]) != "AUTH" {
return nil, ErrAuthCommandInvalid
}
args := strings.Split(strings.Trim(cmdAndArgs[4:], " "), " ")
if args[0] == "" {
return nil, ErrAuthCommandInvalid
}
mechanism := strings.ToUpper(args[0])
initialResponse := ""
if len(args) >= 2 {
initialResponse = args[1]
}
return &AuthCommand{
Mechanism: mechanism,
InitialResponse: initialResponse,
}, nil
}