|
| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "crypto" |
| 5 | + "crypto/rsa" |
| 6 | + "crypto/sha1" |
| 7 | + "crypto/x509" |
| 8 | + "encoding/base64" |
| 9 | + "encoding/pem" |
| 10 | + "fmt" |
| 11 | + "io/ioutil" |
| 12 | + "net/http" |
| 13 | + "sort" |
| 14 | + "strings" |
| 15 | +) |
| 16 | + |
| 17 | +func main() { |
| 18 | + headers := map[string]string{ |
| 19 | + "Connection": "keep-alive", |
| 20 | + "x-mns-message-id": "AC10020B0019681A95159E591D10****", |
| 21 | + "Content-Type": "text/plain;charset=utf-8", |
| 22 | + "Content-md5": "5B4682CCA07FFB080FFE0A9D9821****", |
| 23 | + "x-mns-topic-owner": "****", |
| 24 | + "x-mns-topic-name": "HTTP-test", |
| 25 | + "x-mns-subscriber": "****", |
| 26 | + "x-mns-subscription-name": "sub-test-header", |
| 27 | + "x-mns-publish-time": "1730368640272", |
| 28 | + "x-mns-request-id": "672354803035301900003***", |
| 29 | + "Date": "Thu, 31 Oct 2024 09:57:20 GMT", |
| 30 | + "x-mns-version": "2015-06-06", |
| 31 | + "User-Agent": "Aliyun Notification Service Agent", |
| 32 | + "x-mns-signing-cert-url": "aHR0cHM6Ly9tbnN0ZXN0Lm9zcy1jbi1oYW5nemhvdS5hbGl5dW5****", |
| 33 | + "Authorization": "pg5Prc+ADujqjHbK1XKMK+o+aZjtkAntpR19s2B0T1k1deilZ5UgUFoIsKmLbgirN+1m2srdh****", |
| 34 | + "Host": "****", |
| 35 | + "Content-length": "40", |
| 36 | + "Accept": "*/*", |
| 37 | + } |
| 38 | + |
| 39 | + method := "POST" |
| 40 | + path := "/api/test" |
| 41 | + if authenticateWithHeaderMap(method, path, toLowercaseKeys(headers)) { |
| 42 | + fmt.Println("Signature verification succeeded") |
| 43 | + } else { |
| 44 | + fmt.Println("Signature verification failed") |
| 45 | + } |
| 46 | +} |
| 47 | + |
| 48 | +func authenticateWithResponse(method, path string, resp *http.Response) bool { |
| 49 | + headersMap := headersToMap(resp) |
| 50 | + return authenticateWithHeaderMap(method, path, headersMap) |
| 51 | +} |
| 52 | + |
| 53 | +func authenticateWithHeaderMap(method, path string, headers map[string]string) bool { |
| 54 | + // Get string to sign |
| 55 | + var serviceHeaders []string |
| 56 | + for k, v := range headers { |
| 57 | + if strings.HasPrefix(strings.ToLower(k), "x-mns-") { |
| 58 | + serviceHeaders = append(serviceHeaders, fmt.Sprintf("%s:%s", k, v)) |
| 59 | + } |
| 60 | + } |
| 61 | + |
| 62 | + sort.Strings(serviceHeaders) |
| 63 | + serviceStr := strings.Join(serviceHeaders, "\n") |
| 64 | + var signHeaderList []string |
| 65 | + for _, key := range []string{"content-md5", "content-type", "date"} { |
| 66 | + if val, ok := headers[key]; ok { |
| 67 | + signHeaderList = append(signHeaderList, val) |
| 68 | + } else { |
| 69 | + signHeaderList = append(signHeaderList, "") |
| 70 | + } |
| 71 | + } |
| 72 | + |
| 73 | + str2sign := fmt.Sprintf("%s\n%s\n%s\n%s", method, strings.Join(signHeaderList, "\n"), serviceStr, path) |
| 74 | + fmt.Println("String to sign:", str2sign) |
| 75 | + |
| 76 | + // 获取证书的URL |
| 77 | + certURLBase64, ok := headers["x-mns-signing-cert-url"] |
| 78 | + if !ok { |
| 79 | + fmt.Println("x-mns-signing-cert-url Header not found") |
| 80 | + return false |
| 81 | + } |
| 82 | + |
| 83 | + certURLBytes, err := base64.StdEncoding.DecodeString(certURLBase64) |
| 84 | + if err != nil { |
| 85 | + fmt.Println("Failed to decode base64 cert URL:", err) |
| 86 | + return false |
| 87 | + } |
| 88 | + |
| 89 | + certURL := string(certURLBytes) |
| 90 | + fmt.Println("x-mns-signing-cert-url:\t", certURL) |
| 91 | + |
| 92 | + // 根据URL获取证书，并从证书中获取公钥 |
| 93 | + resp, err := http.Get(certURL) |
| 94 | + if err != nil { |
| 95 | + fmt.Println("Failed to fetch certificate:", err) |
| 96 | + return false |
| 97 | + } |
| 98 | + //goland:noinspection GoUnhandledErrorResult |
| 99 | + defer resp.Body.Close() |
| 100 | + |
| 101 | + //goland:noinspection GoDeprecation |
| 102 | + certData, err := ioutil.ReadAll(resp.Body) |
| 103 | + if err != nil { |
| 104 | + fmt.Println("Failed to read certificate:", err) |
| 105 | + return false |
| 106 | + } |
| 107 | + |
| 108 | + block, _ := pem.Decode(certData) |
| 109 | + if block == nil || block.Type != "CERTIFICATE" { |
| 110 | + fmt.Println("Failed to decode PEM block containing the certificate") |
| 111 | + return false |
| 112 | + } |
| 113 | + |
| 114 | + cert, err := x509.ParseCertificate(block.Bytes) |
| 115 | + if err != nil { |
| 116 | + fmt.Println("Failed to parse certificate:", err) |
| 117 | + return false |
| 118 | + } |
| 119 | + |
| 120 | + pubKey, ok := cert.PublicKey.(*rsa.PublicKey) |
| 121 | + if !ok { |
| 122 | + fmt.Println("Failed to cast public key to RSA public key") |
| 123 | + return false |
| 124 | + } |
| 125 | + |
| 126 | + // 对Authorization字段做Base64解码 |
| 127 | + signatureBase64, ok := headers["authorization"] |
| 128 | + if !ok { |
| 129 | + fmt.Println("Authorization Header not found") |
| 130 | + return false |
| 131 | + } |
| 132 | + |
| 133 | + signature, err := base64.StdEncoding.DecodeString(signatureBase64) |
| 134 | + if err != nil { |
| 135 | + fmt.Println("Failed to decode base64 signature:", err) |
| 136 | + return false |
| 137 | + } |
| 138 | + |
| 139 | + // 认证 |
| 140 | + hash := sha1.New() |
| 141 | + hash.Write([]byte(str2sign)) |
| 142 | + digest := hash.Sum(nil) |
| 143 | + err = rsa.VerifyPKCS1v15(pubKey, crypto.SHA1, digest, signature) |
| 144 | + if err != nil { |
| 145 | + fmt.Println("Signature verification failed:", err) |
| 146 | + return false |
| 147 | + } |
| 148 | + |
| 149 | + return true |
| 150 | +} |
| 151 | + |
| 152 | +func headersToMap(resp *http.Response) map[string]string { |
| 153 | + headersMap := make(map[string]string) |
| 154 | + for key, values := range resp.Header { |
| 155 | + // 连接多个值为一个字符串，使用逗号分隔 |
| 156 | + // map 键值全小写 |
| 157 | + lowercaseKey := strings.ToLower(key) |
| 158 | + headersMap[lowercaseKey] = strings.Join(values, ",") |
| 159 | + } |
| 160 | + return headersMap |
| 161 | +} |
| 162 | + |
| 163 | +// HTTP header 不区分大小写，将 map 的 keys 转换为全小写 |
| 164 | +func toLowercaseKeys(input map[string]string) map[string]string { |
| 165 | + output := make(map[string]string) |
| 166 | + for k, v := range input { |
| 167 | + lowercaseKey := strings.ToLower(k) |
| 168 | + output[lowercaseKey] = v |
| 169 | + } |
| 170 | + return output |
| 171 | +} |
0 commit comments