add password autogeneration mecanism

backend/tracim_backend/lib/utils/utils.py

@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 import datetime
+import random
+import string
 from redis import Redis
 from rq import Queue
 
@@ -72,3 +74,25 @@ def current_date_for_filename() -> str:
     # webdav utils, it may cause trouble. So, it should be replaced to
     # a character which will not change in bdd.
     return datetime.datetime.now().isoformat().replace(':', '.')
+
+# INFO - G.M - 2018-08-02 - Simple password generator, inspired by
+# https://gist.github.com/23maverick23/4131896
+
+
+ALLOWED_AUTOGEN_PASSWORD_CHAR = string.ascii_letters + \
+                                string.digits + \
+                                string.punctuation
+
+DEFAULT_PASSWORD_GEN_CHAR_LENGTH = 12
+
+
+def password_generator(
+        length: int=DEFAULT_PASSWORD_GEN_CHAR_LENGTH,
+        chars: str=ALLOWED_AUTOGEN_PASSWORD_CHAR
+) -> str:
+    """
+    :param length: length of the new password
+    :param chars: characters allowed
+    :return: password as string
+    """
+    return ''.join(random.choice(chars) for char_number in range(length))

backend/tracim_backend/tests/library/tests_utils.py

@@ -0,0 +1,14 @@
+import string
+
+from tracim_backend.lib.utils.utils import password_generator
+from tracim_backend.lib.utils.utils import ALLOWED_AUTOGEN_PASSWORD_CHAR
+from tracim_backend.lib.utils.utils import DEFAULT_PASSWORD_GEN_CHAR_LENGTH
+
+
+class TestPasswordGenerator(object):
+
+    def test_password_generator_ok_nominal_case(self):
+        password = password_generator()
+        assert len(password) == DEFAULT_PASSWORD_GEN_CHAR_LENGTH
+        for char in password:
+            assert char in ALLOWED_AUTOGEN_PASSWORD_CHAR

backend/tracim_backend/views/core_api/workspace_controller.py

@@ -31,6 +31,7 @@ from tracim_backend.exceptions import ContentNotFound
 from tracim_backend.exceptions import WorkspacesDoNotMatch
 from tracim_backend.exceptions import ParentNotFound
 from tracim_backend.views.controllers import Controller
+from tracim_backend.lib.utils.utils import password_generator
 from tracim_backend.views.core_api.schemas import FilterContentQuerySchema
 from tracim_backend.views.core_api.schemas import WorkspaceMemberCreationSchema
 from tracim_backend.views.core_api.schemas import WorkspaceMemberInviteSchema
@@ -213,7 +214,8 @@ class WorkspaceController(Controller):
                 # TODO - G.M - 2018-07-05 - [UserCreation] Reenable email
                 # notification for creation
                 user = uapi.create_user(
-                    hapic_data.body.user_email_or_public_name,
+                    email=hapic_data.body.user_email_or_public_name,
+                    password= password_generator(),
                     do_notify=True
                 )  # nopep8
                 newly_created = True