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sign.go
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sign.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 sign
import (
"crypto/hmac"
"crypto/sha1"
"encoding/base64"
"fmt"
"hash"
"net/url"
"strconv"
"time"
)
const (
httpHeaderAuthorization = "Authorization"
httpHeaderTimestamp = "Timestamp"
authorizationFormat = "Apollo %s:%s"
delimiter = "\n"
question = "?"
)
var (
h = sha1.New
)
// SetHash set hash function
func SetHash(f func() hash.Hash) func() hash.Hash {
o := h
h = f
return o
}
// AuthSignature apollo 鎺堟潈
type AuthSignature struct {
}
// HTTPHeaders HTTPHeaders
func (t *AuthSignature) HTTPHeaders(url string, appID string, secret string) map[string][]string {
ms := time.Now().UnixNano() / int64(time.Millisecond)
timestamp := strconv.FormatInt(ms, 10)
pathWithQuery := url2PathWithQuery(url)
stringToSign := timestamp + delimiter + pathWithQuery
signature := signString(stringToSign, secret)
headers := make(map[string][]string, 2)
signatures := make([]string, 0, 1)
signatures = append(signatures, fmt.Sprintf(authorizationFormat, appID, signature))
headers[httpHeaderAuthorization] = signatures
timestamps := make([]string, 0, 1)
timestamps = append(timestamps, timestamp)
headers[httpHeaderTimestamp] = timestamps
return headers
}
func signString(stringToSign string, accessKeySecret string) string {
key := []byte(accessKeySecret)
mac := hmac.New(h, key)
mac.Write([]byte(stringToSign))
return base64.StdEncoding.EncodeToString(mac.Sum(nil))
}
func url2PathWithQuery(rawURL string) string {
u, err := url.Parse(rawURL)
if err != nil {
return ""
}
pathWithQuery := u.Path
if len(u.RawQuery) > 0 {
pathWithQuery += question + u.RawQuery
}
return pathWithQuery
}