Fix Requests Without Timeout

This patch fixes requests without timeout. The requests library has no
default timeout. This can cause the code to hang indefinitely. This is
not what we want.

See https://bandit.readthedocs.io/en/1.7.5/plugins/b113_request_without_timeout.html

proteuscmd/api.py

@@ -32,21 +32,24 @@ def __url(self, path):
     def __post(self, path, params):
         response = requests.post(self.__url(path),
                                  params=params,
-                                 headers=self.__auth_header)
+                                 headers=self.__auth_header,
+                                 timeout=30)
         if response.status_code >= 300:
             raise Exception(f'Error from requesting {path}: {response.text}')
         return response.json()
 
     def __get(self, path, params):
         response = requests.get(self.__url(path),
                                 params=params,
-                                headers=self.__auth_header)
+                                headers=self.__auth_header,
+                                timeout=30)
         return response.json()
 
     def __delete(self, path, params):
         return requests.delete(self.__url('delete'),
                                params=params,
-                               headers=self.__auth_header)
+                               headers=self.__auth_header,
+                               timeout=30)
 
     def __parse_domain(self, domain):
         for src, to in self.__replacements.items():
@@ -69,7 +72,9 @@ def login(self):
         '''Logging in at Proteus.
         '''
         payload = {'username': self.__user, 'password': self.__password}
-        result = requests.get(self.__url('login'), params=payload).json()
+        result = requests.get(self.__url('login'),
+                              params=payload,
+                              timeout=30).json()
         token = result.split()[2] + ' ' + result.split()[3]
         self.__auth_header = {
                 'Authorization': token,