Prepare mobile de parser preview
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qananasikq
214
iaai_scraper/browser/factory.py
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214
iaai_scraper/browser/factory.py
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import json
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import logging
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import random
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from playwright.sync_api import Browser, BrowserContext, Playwright
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try:
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from playwright_stealth import stealth_sync
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except ImportError:
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stealth_sync = None
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from ..core.config import Settings
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logger = logging.getLogger("iaai_scraper.browser")
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def _build_init_script() -> str:
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# Маскировка браузера.
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hardware_concurrency = random.choice([4, 8, 12, 16])
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device_memory = random.choice([4, 8, 16])
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languages = ["en-US", "en"]
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return f"""
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(() => {{
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const define = (obj, prop, value) => {{
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try {{
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Object.defineProperty(obj, prop, {{ get: () => value, configurable: true }});
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}} catch (e) {{}}
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}};
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define(navigator, 'webdriver', undefined);
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define(navigator, 'platform', 'Win32');
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define(navigator, 'vendor', 'Google Inc.');
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define(navigator, 'language', '{languages[0]}');
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define(navigator, 'languages', {json.dumps(languages)});
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define(navigator, 'hardwareConcurrency', {hardware_concurrency});
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define(navigator, 'deviceMemory', {device_memory});
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define(navigator, 'maxTouchPoints', 0);
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if (!window.chrome) {{
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Object.defineProperty(window, 'chrome', {{
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value: {{ runtime: {{}}, app: {{}}, csi: () => ({{}}), loadTimes: () => ({{}}) }},
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configurable: true
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}});
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}}
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const originalQuery = navigator.permissions && navigator.permissions.query;
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if (originalQuery) {{
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navigator.permissions.query = (params) => (
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params && params.name === 'notifications'
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? Promise.resolve({{ state: Notification.permission }})
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: originalQuery(params)
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);
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}}
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const originalGetParameter = WebGLRenderingContext.prototype.getParameter;
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WebGLRenderingContext.prototype.getParameter = function(parameter) {{
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if (parameter === 37445) return 'Intel Inc.';
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if (parameter === 37446) return 'Intel Iris OpenGL Engine';
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return originalGetParameter.call(this, parameter);
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}};
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}})();
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"""
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class BrowserFactory:
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def __init__(self, settings: Settings) -> None:
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self.settings = settings
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def _resolve_engine(self) -> str:
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# Выбор движка.
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engine = self.settings.browser_engine.strip().lower()
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if engine == "auto":
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# Для IAAI стабильнее Chromium.
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return "chromium"
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if engine in ("firefox", "chromium"):
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return engine
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logger.warning("Unknown IAAI_BROWSER_ENGINE=%r, falling back to auto", engine)
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return "chromium"
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def create_browser(self, playwright: Playwright) -> Browser:
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engine = self._resolve_engine()
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proxy_dict = self.settings.proxy.to_playwright_dict()
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logger.info("Resolved browser engine: requested=%s resolved=%s", self.settings.browser_engine, engine)
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if engine == "firefox":
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launch_kwargs: dict = {"headless": self.settings.headless}
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if proxy_dict:
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launch_kwargs["proxy"] = proxy_dict
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logger.info("Using proxy: %s", self.settings.proxy.server)
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# Настройки Firefox.
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launch_kwargs["firefox_user_prefs"] = {
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"dom.webdriver.enabled": False,
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"useAutomationExtension": False,
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# Базовые оптимизации.
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"media.autoplay.default": 5,
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"media.volume_scale": "0.0",
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"media.audio.playback.standalone": False,
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"dom.ipc.processCount": 1,
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"dom.ipc.plugins.enabled": False,
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"browser.cache.disk.enable": False,
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"browser.cache.memory.enable": True,
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"browser.cache.memory.max_entry_size": 8192,
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"network.prefetch-next": False,
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"network.dns.disablePrefetch": True,
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"permissions.default.image": 2,
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"javascript.options.mem.gc_incremental_mark_slice_ms": 20,
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}
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logger.info("Launching Firefox (headless=%s)", self.settings.headless)
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return playwright.firefox.launch(**launch_kwargs)
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# Запуск Chromium.
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args = [
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"--disable-blink-features=AutomationControlled",
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"--no-default-browser-check",
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"--disable-dev-shm-usage",
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"--disable-features=IsolateOrigins,site-per-process",
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]
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if self.settings.headless:
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args.append("--headless=new")
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pw_headless = False
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logger.info("Using Chromium new-headless mode (--headless=new)")
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else:
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pw_headless = False
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launch_kwargs = {"headless": pw_headless, "args": args}
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if proxy_dict:
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launch_kwargs["proxy"] = proxy_dict
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logger.info("Using proxy: %s", self.settings.proxy.server)
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try:
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logger.info("Trying to launch real Chrome channel")
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return playwright.chromium.launch(channel="chrome", **launch_kwargs)
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except Exception:
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logger.warning("Chrome channel launch failed, falling back to Chromium")
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return playwright.chromium.launch(**launch_kwargs)
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def create_context(self, browser: Browser) -> BrowserContext:
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viewport = random.choice(self.settings.fingerprint.viewport_presets)
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timezone_id = random.choice(self.settings.fingerprint.timezone_candidates)
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color_scheme = random.choice(["light", "dark"])
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is_firefox = browser.browser_type.name == "firefox"
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ctx_kwargs: dict = {
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"viewport": viewport,
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"screen": viewport,
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"locale": self.settings.fingerprint.locale,
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"timezone_id": timezone_id,
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"color_scheme": color_scheme,
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"java_script_enabled": True,
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"ignore_https_errors": False,
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}
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if is_firefox:
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# Заголовки Firefox.
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ctx_kwargs["user_agent"] = (
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) "
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"Gecko/20100101 Firefox/128.0"
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)
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ctx_kwargs["extra_http_headers"] = {
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"Accept-Language": "en-US,en;q=0.5",
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"DNT": "1",
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"Upgrade-Insecure-Requests": "1",
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}
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else:
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ctx_kwargs["user_agent"] = self.settings.fingerprint.user_agent
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ctx_kwargs["device_scale_factor"] = random.choice([1, 1.25])
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ctx_kwargs["is_mobile"] = False
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ctx_kwargs["has_touch"] = False
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ctx_kwargs["extra_http_headers"] = {
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"Accept-Language": "en-US,en;q=0.9",
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"DNT": "1",
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"Upgrade-Insecure-Requests": "1",
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"Sec-CH-UA": self.settings.fingerprint.sec_ch_ua,
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"Sec-CH-UA-Mobile": "?0",
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"Sec-CH-UA-Platform": '"Windows"',
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}
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context = browser.new_context(**ctx_kwargs)
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context.set_default_timeout(self.settings.default_timeout_ms)
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context.set_default_navigation_timeout(self.settings.default_timeout_ms)
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if not is_firefox:
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# Маскировка Chromium.
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context.add_init_script(_build_init_script())
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if stealth_sync:
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context.on("page", lambda page: stealth_sync(page))
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logger.debug("playwright-stealth attached to context")
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return context
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@staticmethod
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def enable_resource_blocking(page) -> None:
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# Блокируем тяжёлые ресурсы.
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BLOCKED_TYPES = {"image", "stylesheet", "font", "media"}
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BLOCKED_URL_PATTERNS = (
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"google-analytics", "googletagmanager", "facebook.net",
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"doubleclick.net", "hotjar", "newrelic", ".woff", ".woff2",
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"analytics", "tracking", "adservice",
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)
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def _handle_route(route):
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req = route.request
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if req.resource_type in BLOCKED_TYPES:
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route.abort()
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return
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url = req.url.lower()
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if any(pat in url for pat in BLOCKED_URL_PATTERNS):
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route.abort()
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return
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route.continue_()
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page.route("**/*", _handle_route)
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