package handler import ( "bytes" "crypto/sha256" "encoding/base64" "fmt" "io" "io/ioutil" "log" "net/http" "net/http/httptest" "net/url" "os" "strconv" "strings" "testing" "time" "git.i2edu.net/i2/go-zero/core/codec" "git.i2edu.net/i2/go-zero/rest/httpx" "github.com/stretchr/testify/assert" ) const timeDiff = time.Hour * 2 * 24 var ( fingerprint = "12345" pubKey = []byte(`-----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQD7bq4FLG0ctccbEFEsUBuRxkjE eJ5U+0CAEjJk20V9/u2Fu76i1oKoShCs7GXtAFbDb5A/ImIXkPY62nAaxTGK4KVH miYbRgh5Fy6336KepLCtCmV/r0PKZeCyJH9uYLs7EuE1z9Hgm5UUjmpHDhJtkAwR my47YlhspwszKdRP+wIDAQAB -----END PUBLIC KEY-----`) priKey = []byte(`-----BEGIN RSA PRIVATE KEY----- MIICXAIBAAKBgQD7bq4FLG0ctccbEFEsUBuRxkjEeJ5U+0CAEjJk20V9/u2Fu76i 1oKoShCs7GXtAFbDb5A/ImIXkPY62nAaxTGK4KVHmiYbRgh5Fy6336KepLCtCmV/ r0PKZeCyJH9uYLs7EuE1z9Hgm5UUjmpHDhJtkAwRmy47YlhspwszKdRP+wIDAQAB AoGBANs1qf7UtuSbD1ZnKX5K8V5s07CHwPMygw+lzc3k5ndtNUStZQ2vnAaBXHyH Nm4lJ4AI2mhQ39jQB/1TyP1uAzvpLhT60fRybEq9zgJ/81Gm9bnaEpFJ9bP2bBrY J0jbaTMfbzL/PJFl3J3RGMR40C76h5yRYSnOpMoMiKWnJqrhAkEA/zCOkR+34Pk0 Yo3sIP4ranY6AAvwacgNaui4ll5xeYwv3iLOQvPlpxIxFHKXEY0klNNyjjXqgYjP cOenqtt6UwJBAPw7EYuteVHvHvQVuTbKAaYHcOrp4nFeZF3ndFfl0w2dwGhfzcXO ROyd5dNQCuCWRo8JBpjG6PFyzezayF4KLrkCQCGditoxHG7FRRJKcbVy5dMzWbaR 3AyDLslLeK1OKZKCVffkC9mj+TeF3PM9mQrV1eDI7ckv7wE7PWA5E8wc90MCQEOV MCZU3OTvRUPxbicYCUkLRV4sPNhTimD+21WR5vMHCb7trJ0Ln7wmsqXkFIYIve8l Y/cblN7c/AAyvu0znUECQA318nPldsxR6+H8HTS3uEbkL4UJdjQJHsvTwKxAw5qc moKExvRlN0zmGGuArKcqS38KG7PXZMrUv3FXPdp6BDQ= -----END RSA PRIVATE KEY-----`) key = []byte("q4t7w!z%C*F-JaNdRgUjXn2r5u8x/A?D") ) type requestSettings struct { method string url string body io.Reader strict bool crypt bool requestUri string timestamp int64 fingerprint string missHeader bool signature string } func init() { log.SetOutput(ioutil.Discard) } func TestContentSecurityHandler(t *testing.T) { tests := []struct { method string url string body string strict bool crypt bool requestUri string timestamp int64 fingerprint string missHeader bool signature string statusCode int }{ { method: http.MethodGet, url: "http://localhost/a/b?c=d&e=f", strict: true, crypt: false, }, { method: http.MethodPost, url: "http://localhost/a/b?c=d&e=f", body: "hello", strict: true, crypt: false, }, { method: http.MethodGet, url: "http://localhost/a/b?c=d&e=f", strict: true, crypt: true, }, { method: http.MethodPost, url: "http://localhost/a/b?c=d&e=f", body: "hello", strict: true, crypt: true, }, { method: http.MethodGet, url: "http://localhost/a/b?c=d&e=f", strict: true, crypt: true, timestamp: time.Now().Add(timeDiff).Unix(), statusCode: http.StatusForbidden, }, { method: http.MethodPost, url: "http://localhost/a/b?c=d&e=f", body: "hello", strict: true, crypt: true, timestamp: time.Now().Add(-timeDiff).Unix(), statusCode: http.StatusForbidden, }, { method: http.MethodPost, url: "http://remotehost/", body: "hello", strict: true, crypt: true, requestUri: "http://localhost/a/b?c=d&e=f", }, { method: http.MethodPost, url: "http://localhost/a/b?c=d&e=f", body: "hello", strict: false, crypt: true, fingerprint: "badone", }, { method: http.MethodPost, url: "http://localhost/a/b?c=d&e=f", body: "hello", strict: true, crypt: true, timestamp: time.Now().Add(-timeDiff).Unix(), fingerprint: "badone", statusCode: http.StatusForbidden, }, { method: http.MethodPost, url: "http://localhost/a/b?c=d&e=f", body: "hello", strict: true, crypt: true, missHeader: true, statusCode: http.StatusForbidden, }, { method: http.MethodHead, url: "http://localhost/a/b?c=d&e=f", strict: true, crypt: false, }, { method: http.MethodGet, url: "http://localhost/a/b?c=d&e=f", strict: true, crypt: false, signature: "badone", statusCode: http.StatusForbidden, }, } for _, test := range tests { t.Run(test.url, func(t *testing.T) { if test.statusCode == 0 { test.statusCode = http.StatusOK } if len(test.fingerprint) == 0 { test.fingerprint = fingerprint } if test.timestamp == 0 { test.timestamp = time.Now().Unix() } func() { keyFile, err := createTempFile(priKey) defer os.Remove(keyFile) assert.Nil(t, err) decrypter, err := codec.NewRsaDecrypter(keyFile) assert.Nil(t, err) contentSecurityHandler := ContentSecurityHandler(map[string]codec.RsaDecrypter{ fingerprint: decrypter, }, time.Hour, test.strict) handler := contentSecurityHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { })) var reader io.Reader if len(test.body) > 0 { reader = strings.NewReader(test.body) } setting := requestSettings{ method: test.method, url: test.url, body: reader, strict: test.strict, crypt: test.crypt, requestUri: test.requestUri, timestamp: test.timestamp, fingerprint: test.fingerprint, missHeader: test.missHeader, signature: test.signature, } req, err := buildRequest(setting) assert.Nil(t, err) resp := httptest.NewRecorder() handler.ServeHTTP(resp, req) assert.Equal(t, test.statusCode, resp.Code) }() }) } } func TestContentSecurityHandler_UnsignedCallback(t *testing.T) { keyFile, err := createTempFile(priKey) defer os.Remove(keyFile) assert.Nil(t, err) decrypter, err := codec.NewRsaDecrypter(keyFile) assert.Nil(t, err) contentSecurityHandler := ContentSecurityHandler( map[string]codec.RsaDecrypter{ fingerprint: decrypter, }, time.Hour, true, func(w http.ResponseWriter, r *http.Request, next http.Handler, strict bool, code int) { w.WriteHeader(http.StatusOK) }) handler := contentSecurityHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {})) setting := requestSettings{ method: http.MethodGet, url: "http://localhost/a/b?c=d&e=f", signature: "badone", } req, err := buildRequest(setting) assert.Nil(t, err) resp := httptest.NewRecorder() handler.ServeHTTP(resp, req) assert.Equal(t, http.StatusOK, resp.Code) } func TestContentSecurityHandler_UnsignedCallback_WrongTime(t *testing.T) { keyFile, err := createTempFile(priKey) defer os.Remove(keyFile) assert.Nil(t, err) decrypter, err := codec.NewRsaDecrypter(keyFile) assert.Nil(t, err) contentSecurityHandler := ContentSecurityHandler( map[string]codec.RsaDecrypter{ fingerprint: decrypter, }, time.Hour, true, func(w http.ResponseWriter, r *http.Request, next http.Handler, strict bool, code int) { assert.Equal(t, httpx.CodeSignatureWrongTime, code) w.WriteHeader(http.StatusOK) }) handler := contentSecurityHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {})) var reader io.Reader reader = strings.NewReader("hello") setting := requestSettings{ method: http.MethodPost, url: "http://localhost/a/b?c=d&e=f", body: reader, strict: true, crypt: true, timestamp: time.Now().Add(time.Hour * 24 * 365).Unix(), fingerprint: fingerprint, } req, err := buildRequest(setting) assert.Nil(t, err) resp := httptest.NewRecorder() handler.ServeHTTP(resp, req) assert.Equal(t, http.StatusOK, resp.Code) } func buildRequest(rs requestSettings) (*http.Request, error) { var bodyStr string var err error if rs.crypt && rs.body != nil { var buf bytes.Buffer io.Copy(&buf, rs.body) bodyBytes, err := codec.EcbEncrypt(key, buf.Bytes()) if err != nil { return nil, err } bodyStr = base64.StdEncoding.EncodeToString(bodyBytes) } r := httptest.NewRequest(rs.method, rs.url, strings.NewReader(bodyStr)) if len(rs.signature) == 0 { sha := sha256.New() sha.Write([]byte(bodyStr)) bodySign := fmt.Sprintf("%x", sha.Sum(nil)) var path string var query string if len(rs.requestUri) > 0 { u, err := url.Parse(rs.requestUri) if err != nil { return nil, err } path = u.Path query = u.RawQuery } else { path = r.URL.Path query = r.URL.RawQuery } contentOfSign := strings.Join([]string{ strconv.FormatInt(rs.timestamp, 10), rs.method, path, query, bodySign, }, "\n") rs.signature = codec.HmacBase64([]byte(key), contentOfSign) } var mode string if rs.crypt { mode = "1" } else { mode = "0" } content := strings.Join([]string{ "version=v1", "type=" + mode, fmt.Sprintf("key=%s", base64.StdEncoding.EncodeToString(key)), "time=" + strconv.FormatInt(rs.timestamp, 10), }, "; ") encrypter, err := codec.NewRsaEncrypter([]byte(pubKey)) if err != nil { log.Fatal(err) } output, err := encrypter.Encrypt([]byte(content)) if err != nil { log.Fatal(err) } encryptedContent := base64.StdEncoding.EncodeToString(output) if !rs.missHeader { r.Header.Set(httpx.ContentSecurity, strings.Join([]string{ fmt.Sprintf("key=%s", rs.fingerprint), "secret=" + encryptedContent, "signature=" + rs.signature, }, "; ")) } if len(rs.requestUri) > 0 { r.Header.Set("X-Request-Uri", rs.requestUri) } return r, nil } func createTempFile(body []byte) (string, error) { tmpFile, err := ioutil.TempFile(os.TempDir(), "go-unit-*.tmp") if err != nil { return "", err } tmpFile.Close() err = ioutil.WriteFile(tmpFile.Name(), body, os.ModePerm) if err != nil { return "", err } return tmpFile.Name(), nil }