[change] Update dependencies #203

Closes #203

By Gagan Deep:

The hostname validation has been adapted from jsonschema~=3.2.0
(jsonschema._format.is_host_name). The newer versions of
jsonschema enforces FQDN validation which is not always
required in OpenWISP. E.g. setting up hostname of a device.

Co-authored-by: Gagan Deep <pandafy.dev@gmail.com>

Author: yashikajotwani12

.github/workflows/ci.yml

@@ -34,7 +34,7 @@ jobs:
 
       - name: Install python dependencies
         run: |
-          pip install -U "pip==20.2.4" wheel setuptools
+          pip install -U pip wheel setuptools
           pip install -U -r requirements-test.txt
 
       - name: Install netjsonconfig

README.rst

@@ -7,9 +7,9 @@ netjsonconfig
 .. image:: https://coveralls.io/repos/openwisp/netjsonconfig/badge.svg
   :target: https://coveralls.io/r/openwisp/netjsonconfig
 
-.. image:: https://requires.io/github/openwisp/netjsonconfig/requirements.svg?branch=master
-   :target: https://requires.io/github/openwisp/netjsonconfig/requirements/?branch=master
-   :alt: Requirements Status
+.. image:: https://img.shields.io/librariesio/release/github/openwisp/netjsonconfig
+   :target: https://libraries.io/github/openwisp/netjsonconfig#repository_dependencies
+   :alt: Dependency monitoring 
 
 .. image:: https://img.shields.io/gitter/room/nwjs/nw.js.svg?style=flat-square
    :target: https://gitter.im/openwisp/general

docs/source/index.rst

@@ -3,20 +3,20 @@ netjsonconfig
 =============
 
 .. image:: https://travis-ci.org/openwisp/netjsonconfig.svg
-  :target: https://travis-ci.org/openwisp/netjsonconfig
+   :target: https://travis-ci.org/openwisp/netjsonconfig
 
 .. image:: https://coveralls.io/repos/openwisp/netjsonconfig/badge.svg
- :target: https://coveralls.io/r/openwisp/netjsonconfig
+   :target: https://coveralls.io/r/openwisp/netjsonconfig
 
-.. image:: https://requires.io/github/openwisp/netjsonconfig/requirements.svg?branch=master
-  :target: https://requires.io/github/openwisp/netjsonconfig/requirements/?branch=master
-  :alt: Requirements Status
+.. image:: https://img.shields.io/librariesio/release/github/openwisp/netjsonconfig
+   :target: https://libraries.io/github/openwisp/netjsonconfig#repository_dependencies
+   :alt: Dependency monitoring
 
 .. image:: https://badge.fury.io/py/netjsonconfig.svg
-  :target: http://badge.fury.io/py/netjsonconfig
+   :target: http://badge.fury.io/py/netjsonconfig
 
 .. image:: https://img.shields.io/gitter/room/nwjs/nw.js.svg?style=flat-square
-  :target: https://gitter.im/openwisp/general
+   :target: https://gitter.im/openwisp/general
 
 Netjsonconfig is part of the `OpenWISP project <http://openwrt.org>`_ and it's the official
 configuration engine of `OpenWISP 2 <https://github.com/openwisp/ansible-openwisp2>`_.

netjsonconfig/backends/base/backend.py

@@ -1,6 +1,7 @@
 import gzip
 import ipaddress
 import json
+import re
 import tarfile
 from collections import OrderedDict
 from copy import deepcopy
@@ -13,6 +14,8 @@
 from ...schema import DEFAULT_FILE_MODE
 from ...utils import evaluate_vars, merge_config
 
+_host_name_re = re.compile(r"^[A-Za-z0-9][A-Za-z0-9\.\-]{1,255}$")
+
 
 class BaseBackend(object):
     """
@@ -131,6 +134,24 @@ def _cidr_notation(value):
             assert False, str(e)
         return True
 
+    @draft4_format_checker.checks('hostname', JsonSchemaError)
+    def _is_hostname(value):
+        """
+        The hostname validation has been taken from jsonschema~=3.2.0
+        (jsonschema._format.is_host_name). The newer versions of
+        jsonschema enforces FQDN validation which is not always
+        required in OpenWISP. E.g. setting up hostname of a device.
+        """
+        if not isinstance(value, str):
+            return True
+        if not _host_name_re.match(value):
+            return False
+        components = value.split(".")
+        for component in components:
+            if len(component) > 63:
+                return False
+        return True
+
     def validate(self):
         try:
             Draft4Validator(self.schema, format_checker=draft4_format_checker).validate(

requirements.txt

@@ -1,3 +1,2 @@
 jinja2~=3.0.0
-jsonschema>=3.0,<3.3
-six
+jsonschema~=4.4.0