Karim shoair
109 lines
5.5 KiB
Python
109 lines
5.5 KiB
Python
import logging
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from scrapling.core._types import Union, Callable, Optional, Dict
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from scrapling.engines.toolbelt import (
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Response,
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do_nothing,
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get_os_name,
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intercept_route,
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check_type_validity,
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generate_convincing_referer,
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)
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from camoufox.sync_api import Camoufox
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class CamoufoxEngine:
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def __init__(
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self, headless: Union[bool, str] = True, block_images: Optional[bool] = False, disable_resources: Optional[bool] = False,
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block_webrtc: Optional[bool] = False, allow_webgl: Optional[bool] = False, network_idle: Optional[bool] = False,
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timeout: Optional[float] = 30000, page_action: Callable = do_nothing, wait_selector: Optional[str] = None,
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wait_selector_state: str = 'attached', adaptor_arguments: Dict = None
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):
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"""An engine that utilizes Camoufox library, check the `StealthyFetcher` class for more documentation.
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:param headless: Run the browser in headless/hidden (default), virtual screen mode, or headful/visible mode.
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:param block_images: Prevent the loading of images through Firefox preferences.
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This can help save your proxy usage but be careful with this option as it makes some websites never finish loading.
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:param disable_resources: Drop requests of unnecessary resources for speed boost. It depends but it made requests ~25% faster in my tests for some websites.
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Requests dropped are of type `font`, `image`, `media`, `beacon`, `object`, `imageset`, `texttrack`, `websocket`, `csp_report`, and `stylesheet`.
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This can help save your proxy usage but be careful with this option as it makes some websites never finish loading.
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:param block_webrtc: Blocks WebRTC entirely.
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:param allow_webgl: Whether to allow WebGL. To prevent leaks, only use this for special cases.
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:param network_idle: Wait for the page to not do do any requests.
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:param timeout: The timeout in milliseconds that's used in all operations and waits through the page. Default is 30000.
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:param page_action: Added for automation. A function that takes the `page` object, do the automation you need, then return `page` again.
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:param wait_selector: Wait for a specific css selector to be in a specific state.
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:param wait_selector_state: The state to wait for the selector given with `wait_selector`. Default state is `attached`.
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:param adaptor_arguments: The arguments that will be passed in the end while creating the final Adaptor's class.
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"""
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self.headless = headless
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self.block_images = bool(block_images)
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self.disable_resources = bool(disable_resources)
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self.block_webrtc = bool(block_webrtc)
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self.allow_webgl = bool(allow_webgl)
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self.network_idle = bool(network_idle)
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self.timeout = check_type_validity(timeout, [int, float], 30000)
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if callable(page_action):
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self.page_action = page_action
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else:
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self.page_action = do_nothing
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logging.error('[Ignored] Argument "page_action" must be callable')
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self.wait_selector = wait_selector
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self.wait_selector_state = wait_selector_state
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self.adaptor_arguments = adaptor_arguments if adaptor_arguments else {}
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def fetch(self, url: str) -> Response:
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"""Opens up the browser and do your request based on your chosen options.
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:param url: Target url.
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:return: A Response object with `url`, `text`, `content`, `status`, `reason`, `encoding`, `cookies`, `headers`, `request_headers`, and the `adaptor` class for parsing, of course.
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"""
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with Camoufox(
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headless=self.headless,
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block_images=self.block_images, # Careful! it makes some websites doesn't finish loading at all like stackoverflow even in headful
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os=get_os_name(),
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block_webrtc=self.block_webrtc,
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allow_webgl=self.allow_webgl,
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) as browser:
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page = browser.new_page()
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page.set_default_navigation_timeout(self.timeout)
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page.set_default_timeout(self.timeout)
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if self.disable_resources:
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page.route("**/*", intercept_route)
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res = page.goto(url, referer=generate_convincing_referer(url))
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page.wait_for_load_state(state="load")
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page.wait_for_load_state(state="domcontentloaded")
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if self.network_idle:
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page.wait_for_load_state('networkidle')
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page = self.page_action(page)
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if self.wait_selector and type(self.wait_selector) is str:
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waiter = page.locator(self.wait_selector)
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waiter.wait_for(state=self.wait_selector_state)
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content_type = res.headers.get('content-type', '')
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# Parse charset from content-type
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encoding = 'utf-8' # default encoding
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if 'charset=' in content_type.lower():
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encoding = content_type.lower().split('charset=')[-1].split(';')[0].strip()
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response = Response(
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url=res.url,
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text=res.text(),
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content=res.body(),
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status=res.status,
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reason=res.status_text,
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encoding=encoding,
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cookies={cookie['name']: cookie['value'] for cookie in page.context.cookies()},
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headers=res.all_headers(),
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request_headers=res.request.all_headers(),
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adaptor_arguments=self.adaptor_arguments
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)
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page.close()
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return response
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