Add route to fetch emails for mobile passwordless login.

[Tweaked by tabbott to rename API to explicitly support not just
Android]

zerver/tests/test_auth_backends.py

@@ -231,3 +231,17 @@ class DevFetchAPIKeyTest(AuthedTestCase):
             result = self.client.post("/api/v1/dev_fetch_api_key",
                                       dict(username=self.email))
             self.assert_json_error_contains(result, "Dev environment not enabled.", 400)
+
+class DevGetEmailsTest(AuthedTestCase):
+    def test_success(self):
+        # type: () -> None
+        result = self.client.get("/api/v1/dev_get_emails")
+        self.assert_json_success(result)
+        self.assertIn("direct_admins", result.content)
+        self.assertIn("direct_users", result.content)
+
+    def test_dev_auth_disabled(self):
+        # type: () -> None
+        with mock.patch('zerver.views.dev_auth_enabled', return_value=False):
+            result = self.client.get("/api/v1/dev_get_emails")
+            self.assert_json_error_contains(result, "Dev environment not enabled.", 400)

zerver/views/__init__.py

@@ -612,6 +612,17 @@ def api_dev_fetch_api_key(request, username=REQ()):
     login(request, user_profile)
     return json_success({"api_key": user_profile.api_key, "email": user_profile.email})
 
+@csrf_exempt
+def api_dev_get_emails(request):
+    # type: (HttpRequest) -> HttpResponse
+    if not dev_auth_enabled() or settings.PRODUCTION:
+        return json_error(_("Dev environment not enabled."))
+    MAX_DEV_BACKEND_USERS = 100 # type: int
+    users_query = UserProfile.objects.select_related().filter(is_bot=False, is_active=True)
+    users = users_query.order_by('email')[0:MAX_DEV_BACKEND_USERS]
+    return json_success(dict(direct_admins=[u.email for u in users if u.is_realm_admin],
+                             direct_users=[u.email for u in users if not u.is_realm_admin]))
+
 @authenticated_json_post_view
 @has_request_variables
 def json_bulk_invite_users(request, user_profile,

zproject/urls.py

@@ -142,6 +142,9 @@ urlpatterns += patterns('zerver.views',
 
     # This is for the signing in through the devAuthBackEnd on mobile apps.
     url(r'^api/v1/dev_fetch_api_key$',      'api_dev_fetch_api_key'),
+    # This is for fetching the emails of the admins and the users.
+    url(r'^api/v1/dev_get_emails$',         'api_dev_get_emails'),
+
     # Used to present the GOOGLE_CLIENT_ID to mobile apps
     url(r'^api/v1/fetch_google_client_id$', 'api_fetch_google_client_id'),