mirror of https://gitee.com/IrisVega/frp.git
57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
// Copyright 2017 fatedier, fatedier@gmail.com
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"crypto/md5"
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"crypto/rand"
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"encoding/hex"
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"fmt"
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)
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// RandId return a rand string used in frp.
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func RandId() (id string, err error) {
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return RandIdWithLen(8)
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}
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// RandIdWithLen return a rand string with idLen length.
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func RandIdWithLen(idLen int) (id string, err error) {
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b := make([]byte, idLen)
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_, err = rand.Read(b)
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if err != nil {
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return
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}
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id = fmt.Sprintf("%x", b)
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return
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}
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func GetAuthKey(token string, timestamp int64) (key string) {
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token = token + fmt.Sprintf("%d", timestamp)
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md5Ctx := md5.New()
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md5Ctx.Write([]byte(token))
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data := md5Ctx.Sum(nil)
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return hex.EncodeToString(data)
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}
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func CanonicalAddr(host string, port int) (addr string) {
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if port == 80 || port == 443 {
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addr = host
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} else {
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addr = fmt.Sprintf("%s:%d", host, port)
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}
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return
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}
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