Ignore OPTIONS request method

fix issue #119

Author: ludusrusso

flask_jwt_extended/config.py

@@ -236,6 +236,8 @@ def identity_claim_key(self):
     def user_claims_key(self):
         return current_app.config['JWT_USER_CLAIMS']
 
-config = _Config()
-
+    @property
+    def exempt_methods(self):
+        return {"OPTIONS"}
 
+config = _Config()

flask_jwt_extended/view_decorators.py

@@ -32,11 +32,12 @@ def jwt_required(fn):
     """
     @wraps(fn)
     def wrapper(*args, **kwargs):
-        jwt_data = _decode_jwt_from_request(request_type='access')
-        ctx_stack.top.jwt = jwt_data
-        if not verify_token_claims(jwt_data[config.user_claims_key]):
-            raise UserClaimsVerificationError('User claims verification failed')
-        _load_user(jwt_data[config.identity_claim_key])
+        if request.method not in config.exempt_methods:
+            jwt_data = _decode_jwt_from_request(request_type='access')
+            ctx_stack.top.jwt = jwt_data
+            if not verify_token_claims(jwt_data[config.user_claims_key]):
+                raise UserClaimsVerificationError('User claims verification failed')
+            _load_user(jwt_data[config.identity_claim_key])
         return fn(*args, **kwargs)
     return wrapper
 
@@ -81,19 +82,20 @@ def fresh_jwt_required(fn):
     """
     @wraps(fn)
     def wrapper(*args, **kwargs):
-        jwt_data = _decode_jwt_from_request(request_type='access')
-        ctx_stack.top.jwt = jwt_data
-        fresh = jwt_data['fresh']
-        if isinstance(fresh, bool):
-            if not fresh:
-                raise FreshTokenRequired('Fresh token required')
-        else:
-            now = timegm(datetime.utcnow().utctimetuple())
-            if fresh < now:
-                raise FreshTokenRequired('Fresh token required')
-        if not verify_token_claims(jwt_data[config.user_claims_key]):
-            raise UserClaimsVerificationError('User claims verification failed')
-        _load_user(jwt_data[config.identity_claim_key])
+        if request.method not in config.exempt_methods:
+            jwt_data = _decode_jwt_from_request(request_type='access')
+            ctx_stack.top.jwt = jwt_data
+            fresh = jwt_data['fresh']
+            if isinstance(fresh, bool):
+                if not fresh:
+                    raise FreshTokenRequired('Fresh token required')
+            else:
+                now = timegm(datetime.utcnow().utctimetuple())
+                if fresh < now:
+                    raise FreshTokenRequired('Fresh token required')
+            if not verify_token_claims(jwt_data[config.user_claims_key]):
+                raise UserClaimsVerificationError('User claims verification failed')
+            _load_user(jwt_data[config.identity_claim_key])
         return fn(*args, **kwargs)
     return wrapper
 
@@ -107,9 +109,10 @@ def jwt_refresh_token_required(fn):
     """
     @wraps(fn)
     def wrapper(*args, **kwargs):
-        jwt_data = _decode_jwt_from_request(request_type='refresh')
-        ctx_stack.top.jwt = jwt_data
-        _load_user(jwt_data[config.identity_claim_key])
+        if request.method not in config.exempt_methods:
+            jwt_data = _decode_jwt_from_request(request_type='refresh')
+            ctx_stack.top.jwt = jwt_data
+            _load_user(jwt_data[config.identity_claim_key])
         return fn(*args, **kwargs)
     return wrapper
 

tests/test_options_method.py

@@ -0,0 +1,45 @@
+from flask import Flask, Blueprint
+from flask_jwt_extended import (
+    JWTManager, jwt_required, fresh_jwt_required, jwt_refresh_token_required
+    )
+import pytest
+
+@pytest.fixture(scope='function')
+def app():
+    app = Flask(__name__)
+    app.config['JWT_SECRET_KEY'] = 'secret'
+    JWTManager(app)
+
+    @app.route('/jwt_required', methods=["GET", "OPTIONS"])
+    @jwt_required
+    def jwt_required_endpoint():
+        return b'ok'
+
+    @app.route('/fresh_jwt_required', methods=["GET", "OPTIONS"])
+    @fresh_jwt_required
+    def fresh_jwt_required_endpoint():
+        return b'ok'
+
+    @app.route('/jwt_refresh_token_required', methods=["GET", "OPTIONS"])
+    @jwt_refresh_token_required
+    def jwt_refresh_token_required_endpoint():
+        return b'ok'
+
+
+
+    return app
+
+def test_access_jwt_required_enpoint(app):
+    res = app.test_client().options('/jwt_required')
+    assert res.status_code == 200
+    assert res.data == b'ok'
+
+def test_access_jwt_refresh_token_required_enpoint(app):
+    res = app.test_client().options('/jwt_refresh_token_required')
+    assert res.status_code == 200
+    assert res.data == b'ok'
+
+def test_access_fresh_jwt_required_enpoint(app):
+    res = app.test_client().options('/fresh_jwt_required')
+    assert res.status_code == 200
+    assert res.data == b'ok'