Firestore 安全规则，如果 WEB_API_KEY 在 Https 请求中则允许读写

Question

我正在使用 HttpsURLConnection 向 Firestore 发送 GET、POST、PATCH 和 DELETE 请求。

private static final String REST_HEADER = "https://firestore.googleapis.com/v1beta1/projects/[my project id]/databases/(default)/documents/";


        // Build URL
        String FirestoreURL = REST_HEADER + [my document path] + "?key=" + [my web api key];

        // Create URL
        URL cloudFirestoreEndPoint = new URL(FirestoreURL);

        // Create connection
        myHttpsConnection = (HttpsURLConnection) cloudFirestoreEndPoint.openConnection();

        // Set Request Method
        myHttpsConnection.setRequestMethod("PATCH");

        // Set Writable
        myHttpsConnection.setDoOutput(true);

        // Set Https Connection properties
        myHttpsConnection.setRequestProperty("Content-Type", "application/json");

        // Create output stream linked to our https connection
        OutputStreamWriter streamWriter = new OutputStreamWriter(myHttpsConnection.getOutputStream());

        // Write to buffer
        streamWriter.write([my json]);

        // Send out the buffer
        streamWriter.flush();

        // Close the stream
        streamWriter.close();

        // disconnect
        myHttpsConnection.disconnect();

我想知道如何设置我的 Firestore 数据库规则，以便允许任何包含正确“?key=”[my web api key] 的读写请求。

service cloud.firestore {
  match /databases/{database}/documents {  
     match /{document=**} {
       allow read, write: if request == 'MY WEB API KEY???';
     }
  }
}

你会如何在 Firestore 中编写它？

Answer 1

这是我解决问题的方法。您在 googleapis 端点发送令牌请求。您将收到一个包含长密钥的有效载荷，然后您必须将其添加到您的所有路径中，get, post, ... request.

这里是获取token的请求

        // Build URL
        String authenticationURL = "https://www.googleapis.com/identitytoolkit/v3/relyingparty";

        if(methodType_.equals("SIGN_UP")){
            authenticationURL = authenticationURL + "/signupNewUser";
        }else if(methodType_.equals("SIGN_IN")){
            authenticationURL = authenticationURL + "/verifyPassword";
        }else{
            return null;
        }
        authenticationURL = authenticationURL + "?key=" + webApiKey_;

        // Create URL
        URL endPointURL = new URL(authenticationURL);

        // Create connection
        myHttpsConnection = (HttpsURLConnection) endPointURL.openConnection();

        // Set Request Method
        myHttpsConnection.setRequestMethod("POST");

        // Set Writable
        myHttpsConnection.setDoOutput(true);

        // Set Https Connection properties
        myHttpsConnection.setRequestProperty("Content-Type", "application/json");

        // Generate JSON from the data
        String myJSON_str = "{\"email\":\"" + email,\"password\":\"" +
                password_ + "\",\"returnSecureToken\":true}";

        JSONObject myJSON = new JSONObject(myJSON_str);

        // Create output stream linked to our https connection
        OutputStreamWriter streamWriter = new OutputStreamWriter(myHttpsConnection.getOutputStream());

        // Write to buffer
        streamWriter.write(myJSON.toString());

        // Send out the buffer
        streamWriter.flush();

        // Close the stream
        streamWriter.close();

        // Get Response Code
        myResponseCode = myHttpsConnection.getResponseCode();

        // If connection successful
        if (myResponseCode == HttpURLConnection.HTTP_OK) {

            // Get Input Stream
            InputStream streamReader = myHttpsConnection.getInputStream();
            InputStreamReader responseBodyReader = new InputStreamReader(streamReader, "UTF-8");

            // Buffer the inputstream
            BufferedReader br = new BufferedReader(responseBodyReader);

            // Create JsonReader from input stream
            JsonReader jsonReader = new JsonReader(br);

            // My custom method to convert a JSON to a readable thing
            ArrayList<Field_Value> myFields = JSON_Methods.convertFirestoreJSON(jsonReader);

            // Close Streams
            jsonReader.close();
            br.close();
            responseBodyReader.close();
            streamReader.close();

            // Get The IdToken Field
            idToken_ = Field_Value.getFieldValue(myFields,"idToken");

        }

将此添加到所有获取、补丁、post.. 请求后，

   // Set Authorization header
        myHttpsConnection.setRequestProperty("Authorization", "Bearer " + idToken_);