HFO4
5 years ago
parent
5befbc21d0
commit
84a6218d3a
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package oss
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import (
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"bytes"
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"crypto"
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"crypto/md5"
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"crypto/rsa"
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"crypto/x509"
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"encoding/base64"
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"encoding/pem"
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"errors"
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"fmt"
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"github.com/HFO4/cloudreve/pkg/cache"
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"github.com/HFO4/cloudreve/pkg/request"
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"io/ioutil"
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"net/http"
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"net/url"
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"strings"
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)
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// GetPublicKey 从回调请求或缓存中获取OSS的回调签名公钥
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func GetPublicKey(r *http.Request) ([]byte, error) {
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var pubKey []byte
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// 尝试从缓存中获取
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pub, exist := cache.Get("oss_public_key")
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if exist {
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return pub.([]byte), nil
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}
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// 从请求中获取
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pubURL, err := base64.StdEncoding.DecodeString(r.Header.Get("x-oss-pub-key-url"))
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if err != nil {
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return pubKey, err
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}
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// 确保这个 public key 是由 OSS 颁发的
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if !strings.HasPrefix(string(pubURL), "http://gosspublic.alicdn.com/") &&
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!strings.HasPrefix(string(pubURL), "https://gosspublic.alicdn.com/") {
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return pubKey, errors.New("公钥URL无效")
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}
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// 获取公钥
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client := request.HTTPClient{}
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body, err := client.Request("GET", string(pubURL), nil).
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CheckHTTPResponse(200).
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GetResponse()
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if err != nil {
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return pubKey, err
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}
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// 写入缓存
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_ = cache.Set("oss_public_key", []byte(body), 86400*7)
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return []byte(body), nil
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}
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func getRequestMD5(r *http.Request) ([]byte, error) {
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var byteMD5 []byte
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// 获取请求正文
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body, err := ioutil.ReadAll(r.Body)
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r.Body.Close()
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if err != nil {
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return byteMD5, err
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}
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r.Body = ioutil.NopCloser(bytes.NewReader(body))
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strURLPathDecode, err := url.PathUnescape(r.URL.Path)
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if err != nil {
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return byteMD5, err
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}
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strAuth := fmt.Sprintf("%s\n%s", strURLPathDecode, string(body))
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md5Ctx := md5.New()
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md5Ctx.Write([]byte(strAuth))
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byteMD5 = md5Ctx.Sum(nil)
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return byteMD5, nil
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}
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// VerifyCallbackSignature 验证OSS回调请求
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func VerifyCallbackSignature(r *http.Request) error {
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bytePublicKey, err := GetPublicKey(r)
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if err != nil {
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return err
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}
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byteMD5, err := getRequestMD5(r)
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if err != nil {
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return err
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}
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strAuthorizationBase64 := r.Header.Get("authorization")
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if strAuthorizationBase64 == "" {
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return errors.New("no authorization field in Request header")
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}
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authorization, _ := base64.StdEncoding.DecodeString(strAuthorizationBase64)
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pubBlock, _ := pem.Decode(bytePublicKey)
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if pubBlock == nil {
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return errors.New("pubBlock not exist")
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}
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pubInterface, err := x509.ParsePKIXPublicKey(pubBlock.Bytes)
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if (pubInterface == nil) || (err != nil) {
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return err
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}
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pub := pubInterface.(*rsa.PublicKey)
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errorVerifyPKCS1v15 := rsa.VerifyPKCS1v15(pub, crypto.MD5, byteMD5, authorization)
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if errorVerifyPKCS1v15 != nil {
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return errorVerifyPKCS1v15
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}
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return nil
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}
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@ -0,0 +1,192 @@
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package oss
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import (
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"github.com/HFO4/cloudreve/pkg/cache"
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"github.com/stretchr/testify/assert"
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"io/ioutil"
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"net/http"
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"net/url"
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"strings"
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"testing"
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)
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func TestGetPublicKey(t *testing.T) {
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asserts := assert.New(t)
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testCases := []struct {
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Request http.Request
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ResNil bool
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Error bool
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}{
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// Header解码失败
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{
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Request: http.Request{
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Header: http.Header{
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"X-Oss-Pub-Key-Url": {"中文"},
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},
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},
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ResNil: true,
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Error: true,
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},
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// 公钥URL无效
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{
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Request: http.Request{
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Header: http.Header{
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"X-Oss-Pub-Key-Url": {"aHR0cHM6Ly9wb3JuaHViLmNvbQ=="},
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},
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},
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ResNil: true,
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Error: true,
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},
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// 请求失败
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{
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Request: http.Request{
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Header: http.Header{
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"X-Oss-Pub-Key-Url": {"aHR0cDovL2dvc3NwdWJsaWMuYWxpY2RuLmNvbS8yMzQyMzQ="},
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},
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},
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ResNil: true,
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Error: true,
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},
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// 成功
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{
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Request: http.Request{
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Header: http.Header{
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"X-Oss-Pub-Key-Url": {"aHR0cDovL2dvc3NwdWJsaWMuYWxpY2RuLmNvbS9jYWxsYmFja19wdWJfa2V5X3YxLnBlbQ=="},
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},
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},
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ResNil: false,
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Error: false,
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},
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}
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for i, testCase := range testCases {
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asserts.NoError(cache.Deletes([]string{"oss_public_key"}, ""))
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res, err := GetPublicKey(&testCase.Request)
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if testCase.Error {
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asserts.Error(err, "Test Case #%d", i)
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} else {
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asserts.NoError(err, "Test Case #%d", i)
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}
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if testCase.ResNil {
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asserts.Empty(res, "Test Case #%d", i)
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} else {
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asserts.NotEmpty(res, "Test Case #%d", i)
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}
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}
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// 测试缓存
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asserts.NoError(cache.Set("oss_public_key", []byte("123"), 0))
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res, err := GetPublicKey(nil)
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asserts.NoError(err)
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asserts.Equal([]byte("123"), res)
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}
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func TestVerifyCallbackSignature(t *testing.T) {
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asserts := assert.New(t)
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testPubKey := `-----BEGIN PUBLIC KEY-----
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MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAKs/JBGzwUB2aVht4crBx3oIPBLNsjGs
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C0fTXv+nvlmklvkcolvpvXLTjaxUHR3W9LXxQ2EHXAJfCB+6H2YF1k8CAwEAAQ==
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-----END PUBLIC KEY-----
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`
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// 成功
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{
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asserts.NoError(cache.Set("oss_public_key", []byte(testPubKey), 0))
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r := http.Request{
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URL: &url.URL{Path: "/api/v3/callback/oss/TnXx5E5VyfJUyM1UdkdDu1rtnJ34EbmH"},
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Header: map[string][]string{
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"Authorization": {"e5LwzwTkP9AFAItT4YzvdJOHd0Y0wqTMWhsV/h5SG90JYGAmMd+8LQyj96R+9qUfJWjMt6suuUh7LaOryR87Dw=="},
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"X-Oss-Pub-Key-Url": {"aHR0cHM6Ly9nb3NzcHVibGljLmFsaWNkbi5jb20vY2FsbGJhY2tfcHViX2tleV92MS5wZW0="},
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},
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Body: ioutil.NopCloser(strings.NewReader(`{"name":"2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","source_name":"1/1_hFRtDLgM_2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","size":114020,"pic_info":"810,539"}`)),
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}
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asserts.NoError(VerifyCallbackSignature(&r))
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}
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// 签名错误
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{
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asserts.NoError(cache.Set("oss_public_key", []byte(testPubKey), 0))
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r := http.Request{
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URL: &url.URL{Path: "/api/v3/callback/oss/TnXx5E5VyfJUyM1UdkdDu1rtnJ34EbmH"},
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Header: map[string][]string{
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"Authorization": {"e3LwzwTkP9AFAItT4YzvdJOHd0Y0wqTMWhsV/h5SG90JYGAmMd+8LQyj96R+9qUfJWjMt6suuUh7LaOryR87Dw=="},
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"X-Oss-Pub-Key-Url": {"aHR0cHM6Ly9nb3NzcHVibGljLmFsaWNkbi5jb20vY2FsbGJhY2tfcHViX2tleV92MS5wZW0="},
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},
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Body: ioutil.NopCloser(strings.NewReader(`{"name":"2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","source_name":"1/1_hFRtDLgM_2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","size":114020,"pic_info":"810,539"}`)),
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}
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asserts.Error(VerifyCallbackSignature(&r))
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}
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// GetPubKey 失败
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{
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asserts.NoError(cache.Deletes([]string{"oss_public_key"}, ""))
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r := http.Request{
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URL: &url.URL{Path: "/api/v3/callback/oss/TnXx5E5VyfJUyM1UdkdDu1rtnJ34EbmH"},
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Header: map[string][]string{
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"Authorization": {"e5LwzwTkP9AFAItT4YzvdJOHd0Y0wqTMWhsV/h5SG90JYGAmMd+8LQyj96R+9qUfJWjMt6suuUh7LaOryR87Dw=="},
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},
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Body: ioutil.NopCloser(strings.NewReader(`{"name":"2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","source_name":"1/1_hFRtDLgM_2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","size":114020,"pic_info":"810,539"}`)),
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}
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asserts.Error(VerifyCallbackSignature(&r))
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}
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// getRequestMD5 失败
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{
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asserts.NoError(cache.Set("oss_public_key", []byte(testPubKey), 0))
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r := http.Request{
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URL: &url.URL{Path: "%测试"},
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Header: map[string][]string{
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"Authorization": {"e5LwzwTkP9AFAItT4YzvdJOHd0Y0wqTMWhsV/h5SG90JYGAmMd+8LQyj96R+9qUfJWjMt6suuUh7LaOryR87Dw=="},
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"X-Oss-Pub-Key-Url": {"aHR0cHM6Ly9nb3NzcHVibGljLmFsaWNkbi5jb20vY2FsbGJhY2tfcHViX2tleV92MS5wZW0="},
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},
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Body: ioutil.NopCloser(strings.NewReader(`{"name":"2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","source_name":"1/1_hFRtDLgM_2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","size":114020,"pic_info":"810,539"}`)),
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}
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asserts.Error(VerifyCallbackSignature(&r))
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}
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// 无 Authorization 头
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{
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asserts.NoError(cache.Set("oss_public_key", []byte(testPubKey), 0))
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r := http.Request{
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URL: &url.URL{Path: "/api/v3/callback/oss/TnXx5E5VyfJUyM1UdkdDu1rtnJ34EbmH"},
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Header: map[string][]string{
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"X-Oss-Pub-Key-Url": {"aHR0cHM6Ly9nb3NzcHVibGljLmFsaWNkbi5jb20vY2FsbGJhY2tfcHViX2tleV92MS5wZW0="},
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},
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Body: ioutil.NopCloser(strings.NewReader(`{"name":"2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","source_name":"1/1_hFRtDLgM_2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","size":114020,"pic_info":"810,539"}`)),
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}
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asserts.Error(VerifyCallbackSignature(&r))
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}
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// pub block 不存在
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{
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asserts.NoError(cache.Set("oss_public_key", []byte(""), 0))
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r := http.Request{
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URL: &url.URL{Path: "/api/v3/callback/oss/TnXx5E5VyfJUyM1UdkdDu1rtnJ34EbmH"},
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Header: map[string][]string{
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"Authorization": {"e5LwzwTkP9AFAItT4YzvdJOHd0Y0wqTMWhsV/h5SG90JYGAmMd+8LQyj96R+9qUfJWjMt6suuUh7LaOryR87Dw=="},
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"X-Oss-Pub-Key-Url": {"aHR0cHM6Ly9nb3NzcHVibGljLmFsaWNkbi5jb20vY2FsbGJhY2tfcHViX2tleV92MS5wZW0="},
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},
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Body: ioutil.NopCloser(strings.NewReader(`{"name":"2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","source_name":"1/1_hFRtDLgM_2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","size":114020,"pic_info":"810,539"}`)),
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}
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asserts.Error(VerifyCallbackSignature(&r))
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}
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// ParsePKIXPublicKey出错
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{
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asserts.NoError(cache.Set("oss_public_key", []byte("-----BEGIN PUBLIC KEY-----\n-----END PUBLIC KEY-----"), 0))
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r := http.Request{
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URL: &url.URL{Path: "/api/v3/callback/oss/TnXx5E5VyfJUyM1UdkdDu1rtnJ34EbmH"},
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Header: map[string][]string{
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"Authorization": {"e5LwzwTkP9AFAItT4YzvdJOHd0Y0wqTMWhsV/h5SG90JYGAmMd+8LQyj96R+9qUfJWjMt6suuUh7LaOryR87Dw=="},
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"X-Oss-Pub-Key-Url": {"aHR0cHM6Ly9nb3NzcHVibGljLmFsaWNkbi5jb20vY2FsbGJhY2tfcHViX2tleV92MS5wZW0="},
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},
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Body: ioutil.NopCloser(strings.NewReader(`{"name":"2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","source_name":"1/1_hFRtDLgM_2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","size":114020,"pic_info":"810,539"}`)),
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}
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asserts.Error(VerifyCallbackSignature(&r))
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}
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}
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///api/v3/callback/oss/TnXx5E5VyfJUyM1UdkdDu1rtnJ34EbmH
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//{"name":"2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","source_name":"1/1_hFRtDLgM_2f7b2ccf30e9270ea920f1ab8a4037a546a2f0d5.jpg","size":114020,"pic_info":"810,539"}
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// aHR0cHM6Ly9nb3NzcHVibGljLmFsaWNkbi5jb20vY2FsbGJhY2tfcHViX2tleV92MS5wZW0=
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// e5LwzwTkP9AFAItT4YzvdJOHd0Y0wqTMWhsV/h5SG90JYGAmMd+8LQyj96R+9qUfJWjMt6suuUh7LaOryR87Dw==
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Reference in new issue