45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package websocket
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import (
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"crypto/rand"
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"crypto/sha1"
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"encoding/base64"
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"io"
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"net/http"
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"strings"
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)
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// tokenListContainsValue returns true if the 1#token header with the given
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// name contains token.
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func tokenListContainsValue(header http.Header, name string, value string) bool {
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for _, v := range header[name] {
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for _, s := range strings.Split(v, ",") {
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if strings.EqualFold(value, strings.TrimSpace(s)) {
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return true
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}
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}
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}
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return false
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}
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var keyGUID = []byte("258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
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func computeAcceptKey(challengeKey string) string {
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h := sha1.New()
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h.Write([]byte(challengeKey))
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h.Write(keyGUID)
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return base64.StdEncoding.EncodeToString(h.Sum(nil))
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}
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func generateChallengeKey() (string, error) {
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p := make([]byte, 16)
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if _, err := io.ReadFull(rand.Reader, p); err != nil {
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return "", err
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}
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return base64.StdEncoding.EncodeToString(p), nil
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}
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