claudemiro
1de947cedc
If two users connect to the system in the same second both would receive the same id. This fix this error.
46 lines
979 B
Go
46 lines
979 B
Go
// Copyright 2014 Claudemiro Alves Feitosa Neto. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package utils
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import (
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"crypto/hmac"
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"math/rand"
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"regexp"
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)
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// HashMAC Calculates the MAC signing with the given key and returns the hexadecimal encoded Result
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func HashMAC(message, key []byte) string {
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mac := hmac.New(sha256.New, key)
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mac.Write(message)
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expected := mac.Sum(nil)
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return hex.EncodeToString(expected)
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}
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// GenerateSessionID Generate a new random Hash
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func GenerateSessionID() string {
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MAX := 999999999
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return fmt.Sprintf("%d.%d", rand.Intn(MAX), rand.Intn(MAX))
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}
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// IsChannelNameValid Verify if the channel name is valid
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func IsChannelNameValid(channelName string) bool {
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matched, err := regexp.MatchString("^[A-Za-z0-9_\\-=@,.;]+$", channelName)
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if err != nil {
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return false
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}
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if matched {
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return true
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}
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return false
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}
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