add csrf tests

test/server/test_csrf.py

@@ -0,0 +1,117 @@
+from clientlib import ScreenshotsClient, screenshots_session
+from urlparse import urljoin, urlsplit
+import random
+import requests
+import json
+import re
+
+
+# Hack to make this predictable:
+random.seed(0)
+
+
+def test_leave_screenshots_with_valid_csrftoken_ok():
+    user = ScreenshotsClient()
+    user.login()
+
+    leave_resp = user.session.get(user.backend + "/leave-screenshots/")
+    assert leave_resp.status_code == 200
+    assert leave_resp.cookies.get('_csrf')
+
+    page = leave_resp.text
+    csrf_match = re.search(r'<input.*name="_csrf".*value="([^"]*)"', page)
+    csrf = csrf_match.group(1)
+    resp = user.session.post(
+        urljoin(user.backend, "/leave-screenshots/leave"),
+        json={"_csrf": csrf})
+    resp.raise_for_status()
+
+
+def test_leave_screenshots_with_invalid_csrftoken_fails():
+    user = ScreenshotsClient()
+    user.login()
+
+    leave_resp = user.session.get(user.backend + "/leave-screenshots/")
+    assert leave_resp.status_code == 200
+    assert leave_resp.cookies.get('_csrf')
+
+    resp = user.session.post(
+        urljoin(user.backend, "/leave-screenshots/leave"),
+        json={"_csrf": "bad-csrf-token"})
+
+    print(resp.text)
+    assert resp.status_code == 403
+
+    user.delete_account()
+
+
+def test_leave_screenshots_without_csrftoken_fails():
+    user = ScreenshotsClient()
+    user.login()
+
+    leave_resp = user.session.get(user.backend + "/leave-screenshots/")
+    assert leave_resp.status_code == 200
+    assert leave_resp.cookies.get('_csrf')
+
+    resp = user.session.post(
+        urljoin(user.backend, "/leave-screenshots/leave"))
+
+    print(resp.text)
+    assert resp.status_code == 403
+
+    user.delete_account()
+
+
+def test_leave_screenshots_with_get_fails():
+    user = ScreenshotsClient()
+    user.login()
+
+    leave_resp = user.session.get(user.backend + "/leave-screenshots/")
+    assert leave_resp.status_code == 200
+    assert leave_resp.cookies.get('_csrf')
+
+    page = leave_resp.text
+    csrf_match = re.search(r'<input.*name="_csrf".*value="([^"]*)"', page)
+    csrf = csrf_match.group(1)
+    resp = user.session.get(
+        urljoin(user.backend, "/leave-screenshots/leave"),
+        params={"_csrf": csrf})
+
+    assert resp.status_code == 404
+
+    user.delete_account()
+
+
+def test_get_settings_does_not_set_csrf_cookie():
+    with screenshots_session() as user:
+        resp = user.get_settings()  # GET /settings/
+        assert resp.status_code == 200
+        assert resp.cookies.get('_csrf', None) is None
+
+        # whether the 302 /settings/ -> /settings
+        # with set-cookie actually sets _csrf
+        # depends on the client
+        resp = user.get_uri(urljoin(user.backend, "/settings"))
+        assert resp.status_code == 200
+        assert resp.cookies.get('_csrf', None) is None
+
+
+def test_get_shot_sets_csrf_cookie():
+    with screenshots_session() as user:
+        shot_url = user.create_shot(docTitle="A_TEST_SITE_1", image_index=0)
+        shot_id = urlsplit(shot_url).path.strip("/")
+        user.create_shot(shot_id=shot_id, docTitle="A_TEST_SITE_2", image_index=1)
+
+        resp = user.session.get(shot_url)
+        resp.raise_for_status()
+        assert resp.cookies.get('_csrf')
+
+
+def test_get_my_shots_sets_csrf_cookie():
+    with screenshots_session() as user:
+        user.read_my_shots()  # raises on error
+        assert user.session.cookies.get('_csrf')
+
+
+if __name__ == "__main__":
+    pass