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108 lines
3.1 KiB
Python
108 lines
3.1 KiB
Python
# 04.4.24
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import logging
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import re
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import os
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import random
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import threading
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import json
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import tempfile
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from typing import Dict, List
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# Internal utilities
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from ..Request import requests
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def get_browser_user_agents_online(browser: str) -> List[str]:
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"""
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Retrieve browser user agent strings from a website.
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Args:
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browser (str): The name of the browser (e.g., 'chrome', 'firefox', 'safari').
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Returns:
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List[str]: List of user agent strings for the specified browser.
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"""
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url = f"https://useragentstring.com/pages/{browser}/"
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try:
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# Make request and find all user agents
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html = requests.get(url).text
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browser_user_agents = re.findall(r"<a href=\'/.*?>(.+?)</a>", html, re.UNICODE)
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return [ua for ua in browser_user_agents if "more" not in ua.lower()]
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except Exception as e:
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logging.error(f"Failed to fetch user agents for '{browser}': {str(e)}")
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return []
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def update_user_agents(browser_name: str, browser_user_agents: Dict[str, List[str]]) -> None:
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"""
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Update browser user agents dictionary with new requests.
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Args:
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browser_name (str): Name of the browser.
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browser_user_agents (Dict[str, List[str]]): Dictionary to store browser user agents.
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"""
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browser_user_agents[browser_name] = get_browser_user_agents_online(browser_name)
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def create_or_update_user_agent_file() -> None:
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"""
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Create or update the user agent file with browser user agents.
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"""
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user_agent_file = os.path.join(tempfile.gettempdir(), 'fake_user_agent.json')
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if not os.path.exists(user_agent_file):
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browser_user_agents: Dict[str, List[str]] = {}
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threads = []
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for browser_name in ['chrome', 'firefox', 'safari']:
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t = threading.Thread(target=update_user_agents, args=(browser_name, browser_user_agents))
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threads.append(t)
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t.start()
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for t in threads:
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t.join()
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with open(user_agent_file, 'w') as f:
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json.dump(browser_user_agents, f, indent=4)
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logging.info(f"User agent file created at: {user_agent_file}")
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else:
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logging.info("User agent file already exists.")
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class UserAgentManager:
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"""
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Manager class to access browser user agents from a file.
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"""
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def __init__(self):
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# Get path to temp file where save all user agents
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self.user_agent_file = os.path.join(tempfile.gettempdir(), 'fake_user_agent.json')
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# If file dont exist, creaet it
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if not os.path.exists(self.user_agent_file):
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create_or_update_user_agent_file()
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def get_random_user_agent(self, browser: str) -> str:
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"""
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Get a random user agent for the specified browser.
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Args:
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browser (str): The name of the browser ('chrome', 'firefox', 'safari').
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Returns:
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Optional[str]: Random user agent string for the specified browser.
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"""
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with open(self.user_agent_file, 'r') as f:
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browser_user_agents = json.load(f)
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return random.choice(browser_user_agents.get(browser.lower(), []))
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# Output
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ua: UserAgentManager = UserAgentManager() |