Remove ability to set a custom User-Agent

This causes issues if the User-Agent is set to resemble a mobile phone,
see #431, and besides, it's not an API surface I want / need to support.

fbchat/_client.py

@@ -57,15 +57,12 @@ class Client:
         """
         return self._uid
 
-    def __init__(
-        self, email, password, user_agent=None, max_tries=5, session_cookies=None
-    ):
+    def __init__(self, email, password, max_tries=5, session_cookies=None):
         """Initialize and log in the client.
 
         Args:
             email: Facebook ``email``, ``id`` or ``phone number``
             password: Facebook account password
-            user_agent: Custom user agent to use when sending requests. If `None`, user agent will be chosen from a premade list
             max_tries (int): Maximum number of times to try logging in
             session_cookies (dict): Cookies from a previous session (Will default to login if these are invalid)
 
@@ -81,10 +78,10 @@ class Client:
         # If session cookies aren't set, not properly loaded or gives us an invalid session, then do the login
         if (
             not session_cookies
-            or not self.setSession(session_cookies, user_agent=user_agent)
+            or not self.setSession(session_cookies)
             or not self.isLoggedIn()
         ):
-            self.login(email, password, max_tries, user_agent=user_agent)
+            self.login(email, password, max_tries)
 
     """
     INTERNAL REQUEST METHODS
@@ -145,7 +142,7 @@ class Client:
         """
         return self._state.get_cookies()
 
-    def setSession(self, session_cookies, user_agent=None):
+    def setSession(self, session_cookies):
         """Load session cookies.
 
         Args:
@@ -156,16 +153,14 @@ class Client:
         """
         try:
             # Load cookies into current session
-            self._state = _state.State.from_cookies(
-                session_cookies, user_agent=user_agent
-            )
+            self._state = _state.State.from_cookies(session_cookies)
             self._uid = self._state.user_id
         except Exception as e:
             log.exception("Failed loading session")
             return False
         return True
 
-    def login(self, email, password, max_tries=5, user_agent=None):
+    def login(self, email, password, max_tries=5):
         """Login the user, using ``email`` and ``password``.
 
         If the user is already logged in, this will do a re-login.
@@ -189,10 +184,7 @@ class Client:
         for i in range(1, max_tries + 1):
             try:
                 self._state = _state.State.login(
-                    email,
-                    password,
-                    on_2fa_callback=self.on2FACode,
-                    user_agent=user_agent,
+                    email, password, on_2fa_callback=self.on2FACode
                 )
                 self._uid = self._state.user_id
             except Exception:

fbchat/_state.py

@@ -23,11 +23,11 @@ def find_input_fields(html):
     return bs4.BeautifulSoup(html, "html.parser", parse_only=bs4.SoupStrainer("input"))
 
 
-def session_factory(user_agent=None):
+def session_factory():
     session = requests.session()
     session.headers["Referer"] = "https://www.facebook.com"
     # TODO: Deprecate setting the user agent manually
-    session.headers["User-Agent"] = user_agent or random.choice(_util.USER_AGENTS)
+    session.headers["User-Agent"] = random.choice(_util.USER_AGENTS)
     return session
 
 
@@ -120,8 +120,8 @@ class State:
         }
 
     @classmethod
-    def login(cls, email, password, on_2fa_callback, user_agent=None):
-        session = session_factory(user_agent=user_agent)
+    def login(cls, email, password, on_2fa_callback):
+        session = session_factory()
 
         soup = find_input_fields(session.get("https://m.facebook.com/").text)
         data = dict(
@@ -201,8 +201,8 @@ class State:
         return self._session.cookies.get_dict()
 
     @classmethod
-    def from_cookies(cls, cookies, user_agent=None):
-        session = session_factory(user_agent=user_agent)
+    def from_cookies(cls, cookies):
+        session = session_factory()
         session.cookies = requests.cookies.merge_cookies(session.cookies, cookies)
         return cls.from_session(session=session)
 

tests/utils.py

@@ -93,7 +93,6 @@ def load_client(n, cache):
     client = Client(
         load_variable("client{}_email".format(n), cache),
         load_variable("client{}_password".format(n), cache),
-        user_agent="Mozilla/5.0 (Windows NT 6.3; WOW64; ; NCT50_AAP285C84A1328) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36",
         session_cookies=cache.get("client{}_session".format(n), None),
         max_tries=1,
     )