claudemiro
53 lines
1.5 KiB
Go
53 lines
1.5 KiB
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"
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"math/rand"
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"regexp"
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"strings"
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)
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var channelValidationRegex = regexp.MustCompile("^[A-Za-z0-9_\\-=@,.;]+$")
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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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return fmt.Sprintf("%d.%d", rand.Intn(math.MaxInt32), rand.Intn(math.MaxInt32))
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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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return channelValidationRegex.MatchString(channelName)
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}
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// IsPrivateChannel Verify if the channel name represents a private channel
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func IsPrivateChannel(channelName string) bool {
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return strings.HasPrefix(channelName, "private-")
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}
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// IsPresenceChannel Verify if the channel name represents a presence channel
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func IsPresenceChannel(channelName string) bool {
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return strings.HasPrefix(channelName, "presence-")
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}
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// IsClientEvent Verify if the event name represents a client event type
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func IsClientEvent(event string) bool {
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return strings.HasPrefix(event, "client-")
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}
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