feat(crawler): Enhance stealth and flexibility, improve error handling
- Implement playwright_stealth for better bot detection avoidance - Add user simulation and navigator override options - Improve iframe processing and browser selection - Enhance error reporting and debugging capabilities - Optimize image processing and parallel crawling - Add new example for user simulation feature - Added support for including links in Markdown content, by definin g a new flag `include_links_on_markdown` in `crawl` method.
This commit is contained in:
UncleCode
2
.gitignore
vendored
2
.gitignore
vendored
@@ -202,5 +202,7 @@ todo.md
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git_changes.py
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git_changes.md
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pypi_build.sh
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git_issues.py
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git_issues.md
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.tests/
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47
CHANGELOG.md
47
CHANGELOG.md
@@ -1,5 +1,52 @@
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# Changelog
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## [v0.3.7] - 2024-10-17
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### New Features
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1. **Enhanced Browser Stealth**:
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- Implemented `playwright_stealth` for improved bot detection avoidance.
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- Added `StealthConfig` for fine-tuned control over stealth parameters.
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2. **User Simulation**:
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- New `simulate_user` option to mimic human-like interactions (mouse movements, clicks, keyboard presses).
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3. **Navigator Override**:
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- Added `override_navigator` option to modify navigator properties, further improving bot detection evasion.
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4. **Improved iframe Handling**:
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- New `process_iframes` parameter to extract and integrate iframe content into the main page.
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5. **Flexible Browser Selection**:
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- Support for choosing between Chromium, Firefox, and WebKit browsers.
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6. **Include Links in Markdown**:
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- Added support for including links in Markdown content, by definin g a new flag `include_links_on_markdown` in `crawl` method.
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### Improvements
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1. **Better Error Handling**:
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- Enhanced error reporting in WebScrappingStrategy with detailed error messages and suggestions.
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- Added console message and error logging for better debugging.
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2. **Image Processing Enhancements**:
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- Improved image dimension updating and filtering logic.
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3. **Crawling Flexibility**:
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- Added support for custom viewport sizes.
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- Implemented delayed content retrieval with `delay_before_return_html` parameter.
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4. **Performance Optimization**:
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- Adjusted default semaphore count for parallel crawling.
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### Bug Fixes
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- Fixed an issue where the HTML content could be empty after processing.
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### Examples
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- Added new example `crawl_with_user_simulation()` demonstrating the use of user simulation and navigator override features.
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### Developer Notes
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- Refactored code for better maintainability and readability.
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- Updated browser launch arguments for improved compatibility and performance.
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## [v0.3.6] - 2024-10-12
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### 1. Improved Crawling Control
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558
crawl4ai/async_crawler_strategy copy.py
Normal file
558
crawl4ai/async_crawler_strategy copy.py
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@@ -0,0 +1,558 @@
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import asyncio
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import base64
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import time
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from abc import ABC, abstractmethod
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from typing import Callable, Dict, Any, List, Optional, Awaitable
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import os
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from playwright.async_api import async_playwright, Page, Browser, Error
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from io import BytesIO
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from PIL import Image, ImageDraw, ImageFont
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from pathlib import Path
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from playwright.async_api import ProxySettings
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from pydantic import BaseModel
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import hashlib
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import json
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import uuid
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from playwright_stealth import stealth_async
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class AsyncCrawlResponse(BaseModel):
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html: str
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response_headers: Dict[str, str]
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status_code: int
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screenshot: Optional[str] = None
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get_delayed_content: Optional[Callable[[Optional[float]], Awaitable[str]]] = None
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class Config:
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arbitrary_types_allowed = True
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class AsyncCrawlerStrategy(ABC):
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@abstractmethod
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async def crawl(self, url: str, **kwargs) -> AsyncCrawlResponse:
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pass
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@abstractmethod
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async def crawl_many(self, urls: List[str], **kwargs) -> List[AsyncCrawlResponse]:
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pass
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@abstractmethod
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async def take_screenshot(self, url: str) -> str:
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pass
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@abstractmethod
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def update_user_agent(self, user_agent: str):
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pass
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@abstractmethod
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def set_hook(self, hook_type: str, hook: Callable):
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pass
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class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
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def __init__(self, use_cached_html=False, js_code=None, **kwargs):
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self.use_cached_html = use_cached_html
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self.user_agent = kwargs.get(
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"user_agent",
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
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"(KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
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)
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self.proxy = kwargs.get("proxy")
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self.headless = kwargs.get("headless", True)
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self.browser_type = kwargs.get("browser_type", "chromium")
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self.headers = kwargs.get("headers", {})
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self.sessions = {}
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self.session_ttl = 1800
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self.js_code = js_code
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self.verbose = kwargs.get("verbose", False)
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self.playwright = None
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self.browser = None
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self.hooks = {
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'on_browser_created': None,
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'on_user_agent_updated': None,
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'on_execution_started': None,
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'before_goto': None,
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'after_goto': None,
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'before_return_html': None,
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'before_retrieve_html': None
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}
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async def __aenter__(self):
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await self.start()
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return self
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async def __aexit__(self, exc_type, exc_val, exc_tb):
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await self.close()
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async def start(self):
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if self.playwright is None:
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self.playwright = await async_playwright().start()
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if self.browser is None:
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browser_args = {
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"headless": self.headless,
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"args": [
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"--disable-gpu",
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"--no-sandbox",
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"--disable-dev-shm-usage",
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"--disable-blink-features=AutomationControlled",
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"--disable-infobars",
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"--window-position=0,0",
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"--ignore-certificate-errors",
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"--ignore-certificate-errors-spki-list",
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# "--headless=new", # Use the new headless mode
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]
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}
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# Add proxy settings if a proxy is specified
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if self.proxy:
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proxy_settings = ProxySettings(server=self.proxy)
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browser_args["proxy"] = proxy_settings
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# Select the appropriate browser based on the browser_type
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if self.browser_type == "firefox":
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self.browser = await self.playwright.firefox.launch(**browser_args)
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elif self.browser_type == "webkit":
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self.browser = await self.playwright.webkit.launch(**browser_args)
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else:
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self.browser = await self.playwright.chromium.launch(**browser_args)
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await self.execute_hook('on_browser_created', self.browser)
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async def close(self):
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if self.browser:
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await self.browser.close()
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self.browser = None
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if self.playwright:
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await self.playwright.stop()
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self.playwright = None
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def __del__(self):
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if self.browser or self.playwright:
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asyncio.get_event_loop().run_until_complete(self.close())
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def set_hook(self, hook_type: str, hook: Callable):
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if hook_type in self.hooks:
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self.hooks[hook_type] = hook
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else:
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raise ValueError(f"Invalid hook type: {hook_type}")
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async def execute_hook(self, hook_type: str, *args):
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hook = self.hooks.get(hook_type)
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if hook:
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if asyncio.iscoroutinefunction(hook):
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return await hook(*args)
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else:
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return hook(*args)
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return args[0] if args else None
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def update_user_agent(self, user_agent: str):
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self.user_agent = user_agent
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def set_custom_headers(self, headers: Dict[str, str]):
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self.headers = headers
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async def kill_session(self, session_id: str):
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if session_id in self.sessions:
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context, page, _ = self.sessions[session_id]
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await page.close()
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await context.close()
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del self.sessions[session_id]
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def _cleanup_expired_sessions(self):
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current_time = time.time()
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expired_sessions = [
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sid for sid, (_, _, last_used) in self.sessions.items()
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if current_time - last_used > self.session_ttl
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]
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for sid in expired_sessions:
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asyncio.create_task(self.kill_session(sid))
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async def smart_wait(self, page: Page, wait_for: str, timeout: float = 30000):
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wait_for = wait_for.strip()
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if wait_for.startswith('js:'):
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# Explicitly specified JavaScript
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js_code = wait_for[3:].strip()
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return await self.csp_compliant_wait(page, js_code, timeout)
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elif wait_for.startswith('css:'):
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# Explicitly specified CSS selector
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css_selector = wait_for[4:].strip()
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try:
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await page.wait_for_selector(css_selector, timeout=timeout)
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except Error as e:
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if 'Timeout' in str(e):
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raise TimeoutError(f"Timeout after {timeout}ms waiting for selector '{css_selector}'")
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else:
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raise ValueError(f"Invalid CSS selector: '{css_selector}'")
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else:
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# Auto-detect based on content
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if wait_for.startswith('()') or wait_for.startswith('function'):
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# It's likely a JavaScript function
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return await self.csp_compliant_wait(page, wait_for, timeout)
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else:
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# Assume it's a CSS selector first
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try:
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await page.wait_for_selector(wait_for, timeout=timeout)
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except Error as e:
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if 'Timeout' in str(e):
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raise TimeoutError(f"Timeout after {timeout}ms waiting for selector '{wait_for}'")
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else:
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# If it's not a timeout error, it might be an invalid selector
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# Let's try to evaluate it as a JavaScript function as a fallback
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try:
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return await self.csp_compliant_wait(page, f"() => {{{wait_for}}}", timeout)
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except Error:
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raise ValueError(f"Invalid wait_for parameter: '{wait_for}'. "
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"It should be either a valid CSS selector, a JavaScript function, "
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"or explicitly prefixed with 'js:' or 'css:'.")
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async def csp_compliant_wait(self, page: Page, user_wait_function: str, timeout: float = 30000):
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wrapper_js = f"""
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async () => {{
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const userFunction = {user_wait_function};
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const startTime = Date.now();
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while (true) {{
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if (await userFunction()) {{
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return true;
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}}
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if (Date.now() - startTime > {timeout}) {{
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throw new Error('Timeout waiting for condition');
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}}
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await new Promise(resolve => setTimeout(resolve, 100));
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}}
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}}
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"""
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try:
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await page.evaluate(wrapper_js)
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except TimeoutError:
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raise TimeoutError(f"Timeout after {timeout}ms waiting for condition")
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except Exception as e:
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raise RuntimeError(f"Error in wait condition: {str(e)}")
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async def process_iframes(self, page):
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# Find all iframes
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iframes = await page.query_selector_all('iframe')
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for i, iframe in enumerate(iframes):
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try:
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# Add a unique identifier to the iframe
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await iframe.evaluate(f'(element) => element.id = "iframe-{i}"')
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# Get the frame associated with this iframe
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frame = await iframe.content_frame()
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if frame:
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# Wait for the frame to load
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await frame.wait_for_load_state('load', timeout=30000) # 30 seconds timeout
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# Extract the content of the iframe's body
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iframe_content = await frame.evaluate('() => document.body.innerHTML')
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# Generate a unique class name for this iframe
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class_name = f'extracted-iframe-content-{i}'
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# Replace the iframe with a div containing the extracted content
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_iframe = iframe_content.replace('`', '\\`')
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await page.evaluate(f"""
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() => {{
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const iframe = document.getElementById('iframe-{i}');
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const div = document.createElement('div');
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div.innerHTML = `{_iframe}`;
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div.className = '{class_name}';
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iframe.replaceWith(div);
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}}
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""")
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else:
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print(f"Warning: Could not access content frame for iframe {i}")
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except Exception as e:
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print(f"Error processing iframe {i}: {str(e)}")
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# Return the page object
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return page
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async def crawl(self, url: str, **kwargs) -> AsyncCrawlResponse:
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response_headers = {}
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status_code = None
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self._cleanup_expired_sessions()
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session_id = kwargs.get("session_id")
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if session_id:
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context, page, _ = self.sessions.get(session_id, (None, None, None))
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if not context:
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context = await self.browser.new_context(
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user_agent=self.user_agent,
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viewport={"width": 1920, "height": 1080},
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proxy={"server": self.proxy} if self.proxy else None
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)
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await context.set_extra_http_headers(self.headers)
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page = await context.new_page()
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self.sessions[session_id] = (context, page, time.time())
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else:
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context = await self.browser.new_context(
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user_agent=self.user_agent,
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viewport={"width": 1920, "height": 1080},
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proxy={"server": self.proxy} if self.proxy else None
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)
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await context.set_extra_http_headers(self.headers)
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if kwargs.get("override_navigator", False):
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# Inject scripts to override navigator properties
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await context.add_init_script("""
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// Pass the Permissions Test.
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const originalQuery = window.navigator.permissions.query;
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window.navigator.permissions.query = (parameters) => (
|
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parameters.name === 'notifications' ?
|
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Promise.resolve({ state: Notification.permission }) :
|
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originalQuery(parameters)
|
||||
);
|
||||
Object.defineProperty(navigator, 'webdriver', {
|
||||
get: () => undefined
|
||||
});
|
||||
window.navigator.chrome = {
|
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runtime: {},
|
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// Add other properties if necessary
|
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};
|
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Object.defineProperty(navigator, 'plugins', {
|
||||
get: () => [1, 2, 3, 4, 5],
|
||||
});
|
||||
Object.defineProperty(navigator, 'languages', {
|
||||
get: () => ['en-US', 'en'],
|
||||
});
|
||||
Object.defineProperty(document, 'hidden', {
|
||||
get: () => false
|
||||
});
|
||||
Object.defineProperty(document, 'visibilityState', {
|
||||
get: () => 'visible'
|
||||
});
|
||||
""")
|
||||
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||||
page = await context.new_page()
|
||||
|
||||
try:
|
||||
if self.verbose:
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print(f"[LOG] 🕸️ Crawling {url} using AsyncPlaywrightCrawlerStrategy...")
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|
||||
if self.use_cached_html:
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cache_file_path = os.path.join(
|
||||
Path.home(), ".crawl4ai", "cache", hashlib.md5(url.encode()).hexdigest()
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)
|
||||
if os.path.exists(cache_file_path):
|
||||
html = ""
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with open(cache_file_path, "r") as f:
|
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html = f.read()
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||||
# retrieve response headers and status code from cache
|
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with open(cache_file_path + ".meta", "r") as f:
|
||||
meta = json.load(f)
|
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response_headers = meta.get("response_headers", {})
|
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status_code = meta.get("status_code")
|
||||
response = AsyncCrawlResponse(
|
||||
html=html, response_headers=response_headers, status_code=status_code
|
||||
)
|
||||
return response
|
||||
|
||||
if not kwargs.get("js_only", False):
|
||||
await self.execute_hook('before_goto', page)
|
||||
|
||||
response = await page.goto("about:blank")
|
||||
await stealth_async(page)
|
||||
response = await page.goto(
|
||||
url, wait_until="domcontentloaded", timeout=kwargs.get("page_timeout", 60000)
|
||||
)
|
||||
|
||||
# await stealth_async(page)
|
||||
# response = await page.goto("about:blank")
|
||||
# await stealth_async(page)
|
||||
# await page.evaluate(f"window.location.href = '{url}'")
|
||||
|
||||
await self.execute_hook('after_goto', page)
|
||||
|
||||
# Get status code and headers
|
||||
status_code = response.status
|
||||
response_headers = response.headers
|
||||
else:
|
||||
status_code = 200
|
||||
response_headers = {}
|
||||
|
||||
await page.wait_for_selector('body')
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight)")
|
||||
|
||||
js_code = kwargs.get("js_code", kwargs.get("js", self.js_code))
|
||||
if js_code:
|
||||
if isinstance(js_code, str):
|
||||
await page.evaluate(js_code)
|
||||
elif isinstance(js_code, list):
|
||||
for js in js_code:
|
||||
await page.evaluate(js)
|
||||
|
||||
await page.wait_for_load_state('networkidle')
|
||||
# Check for on execution event
|
||||
await self.execute_hook('on_execution_started', page)
|
||||
|
||||
if kwargs.get("simulate_user", False):
|
||||
# Simulate user interactions
|
||||
await page.mouse.move(100, 100)
|
||||
await page.mouse.down()
|
||||
await page.mouse.up()
|
||||
await page.keyboard.press('ArrowDown')
|
||||
|
||||
# Handle the wait_for parameter
|
||||
wait_for = kwargs.get("wait_for")
|
||||
if wait_for:
|
||||
try:
|
||||
await self.smart_wait(page, wait_for, timeout=kwargs.get("page_timeout", 60000))
|
||||
except Exception as e:
|
||||
raise RuntimeError(f"Wait condition failed: {str(e)}")
|
||||
|
||||
|
||||
|
||||
# Update image dimensions
|
||||
update_image_dimensions_js = """
|
||||
() => {
|
||||
return new Promise((resolve) => {
|
||||
const filterImage = (img) => {
|
||||
// Filter out images that are too small
|
||||
if (img.width < 100 && img.height < 100) return false;
|
||||
|
||||
// Filter out images that are not visible
|
||||
const rect = img.getBoundingClientRect();
|
||||
if (rect.width === 0 || rect.height === 0) return false;
|
||||
|
||||
// Filter out images with certain class names (e.g., icons, thumbnails)
|
||||
if (img.classList.contains('icon') || img.classList.contains('thumbnail')) return false;
|
||||
|
||||
// Filter out images with certain patterns in their src (e.g., placeholder images)
|
||||
if (img.src.includes('placeholder') || img.src.includes('icon')) return false;
|
||||
|
||||
return true;
|
||||
};
|
||||
|
||||
const images = Array.from(document.querySelectorAll('img')).filter(filterImage);
|
||||
let imagesLeft = images.length;
|
||||
|
||||
if (imagesLeft === 0) {
|
||||
resolve();
|
||||
return;
|
||||
}
|
||||
|
||||
const checkImage = (img) => {
|
||||
if (img.complete && img.naturalWidth !== 0) {
|
||||
img.setAttribute('width', img.naturalWidth);
|
||||
img.setAttribute('height', img.naturalHeight);
|
||||
imagesLeft--;
|
||||
if (imagesLeft === 0) resolve();
|
||||
}
|
||||
};
|
||||
|
||||
images.forEach(img => {
|
||||
checkImage(img);
|
||||
if (!img.complete) {
|
||||
img.onload = () => {
|
||||
checkImage(img);
|
||||
};
|
||||
img.onerror = () => {
|
||||
imagesLeft--;
|
||||
if (imagesLeft === 0) resolve();
|
||||
};
|
||||
}
|
||||
});
|
||||
|
||||
// Fallback timeout of 5 seconds
|
||||
setTimeout(() => resolve(), 5000);
|
||||
});
|
||||
}
|
||||
"""
|
||||
await page.evaluate(update_image_dimensions_js)
|
||||
|
||||
# Wait a bit for any onload events to complete
|
||||
await page.wait_for_timeout(100)
|
||||
|
||||
# Process iframes
|
||||
if kwargs.get("process_iframes", False):
|
||||
page = await self.process_iframes(page)
|
||||
|
||||
await self.execute_hook('before_retrieve_html', page)
|
||||
# Check if delay_before_return_html is set then wait for that time
|
||||
delay_before_return_html = kwargs.get("delay_before_return_html")
|
||||
if delay_before_return_html:
|
||||
await asyncio.sleep(delay_before_return_html)
|
||||
|
||||
html = await page.content()
|
||||
await self.execute_hook('before_return_html', page, html)
|
||||
|
||||
# Check if kwargs has screenshot=True then take screenshot
|
||||
screenshot_data = None
|
||||
if kwargs.get("screenshot"):
|
||||
screenshot_data = await self.take_screenshot(url)
|
||||
|
||||
if self.verbose:
|
||||
print(f"[LOG] ✅ Crawled {url} successfully!")
|
||||
|
||||
if self.use_cached_html:
|
||||
cache_file_path = os.path.join(
|
||||
Path.home(), ".crawl4ai", "cache", hashlib.md5(url.encode()).hexdigest()
|
||||
)
|
||||
with open(cache_file_path, "w", encoding="utf-8") as f:
|
||||
f.write(html)
|
||||
# store response headers and status code in cache
|
||||
with open(cache_file_path + ".meta", "w", encoding="utf-8") as f:
|
||||
json.dump({
|
||||
"response_headers": response_headers,
|
||||
"status_code": status_code
|
||||
}, f)
|
||||
|
||||
async def get_delayed_content(delay: float = 5.0) -> str:
|
||||
if self.verbose:
|
||||
print(f"[LOG] Waiting for {delay} seconds before retrieving content for {url}")
|
||||
await asyncio.sleep(delay)
|
||||
return await page.content()
|
||||
|
||||
response = AsyncCrawlResponse(
|
||||
html=html,
|
||||
response_headers=response_headers,
|
||||
status_code=status_code,
|
||||
screenshot=screenshot_data,
|
||||
get_delayed_content=get_delayed_content
|
||||
)
|
||||
return response
|
||||
except Error as e:
|
||||
raise Error(f"Failed to crawl {url}: {str(e)}")
|
||||
finally:
|
||||
if not session_id:
|
||||
await page.close()
|
||||
await context.close()
|
||||
|
||||
async def crawl_many(self, urls: List[str], **kwargs) -> List[AsyncCrawlResponse]:
|
||||
semaphore_count = kwargs.get('semaphore_count', 5) # Adjust as needed
|
||||
semaphore = asyncio.Semaphore(semaphore_count)
|
||||
|
||||
async def crawl_with_semaphore(url):
|
||||
async with semaphore:
|
||||
return await self.crawl(url, **kwargs)
|
||||
|
||||
tasks = [crawl_with_semaphore(url) for url in urls]
|
||||
results = await asyncio.gather(*tasks, return_exceptions=True)
|
||||
return [result if not isinstance(result, Exception) else str(result) for result in results]
|
||||
|
||||
async def take_screenshot(self, url: str, wait_time=1000) -> str:
|
||||
async with await self.browser.new_context(user_agent=self.user_agent) as context:
|
||||
page = await context.new_page()
|
||||
try:
|
||||
await page.goto(url, wait_until="domcontentloaded", timeout=30000)
|
||||
# Wait for a specified time (default is 1 second)
|
||||
await page.wait_for_timeout(wait_time)
|
||||
screenshot = await page.screenshot(full_page=True)
|
||||
return base64.b64encode(screenshot).decode('utf-8')
|
||||
except Exception as e:
|
||||
error_message = f"Failed to take screenshot: {str(e)}"
|
||||
print(error_message)
|
||||
|
||||
# Generate an error image
|
||||
img = Image.new('RGB', (800, 600), color='black')
|
||||
draw = ImageDraw.Draw(img)
|
||||
font = ImageFont.load_default()
|
||||
draw.text((10, 10), error_message, fill=(255, 255, 255), font=font)
|
||||
|
||||
buffered = BytesIO()
|
||||
img.save(buffered, format="JPEG")
|
||||
return base64.b64encode(buffered.getvalue()).decode('utf-8')
|
||||
finally:
|
||||
await page.close()
|
||||
|
||||
@@ -1,17 +1,35 @@
|
||||
import asyncio
|
||||
import base64, time
|
||||
import base64
|
||||
import time
|
||||
from abc import ABC, abstractmethod
|
||||
from typing import Callable, Dict, Any, List, Optional, Awaitable
|
||||
import os
|
||||
from playwright.async_api import async_playwright, Page, Browser, Error
|
||||
from io import BytesIO
|
||||
from PIL import Image, ImageDraw, ImageFont
|
||||
from .utils import sanitize_input_encode, calculate_semaphore_count
|
||||
import json, uuid
|
||||
import hashlib
|
||||
from pathlib import Path
|
||||
from playwright.async_api import ProxySettings
|
||||
from pydantic import BaseModel
|
||||
import hashlib
|
||||
import json
|
||||
import uuid
|
||||
from playwright_stealth import StealthConfig, stealth_async
|
||||
|
||||
stealth_config = StealthConfig(
|
||||
webdriver=True,
|
||||
chrome_app=True,
|
||||
chrome_csi=True,
|
||||
chrome_load_times=True,
|
||||
chrome_runtime=True,
|
||||
navigator_languages=True,
|
||||
navigator_plugins=True,
|
||||
navigator_permissions=True,
|
||||
webgl_vendor=True,
|
||||
outerdimensions=True,
|
||||
navigator_hardware_concurrency=True,
|
||||
media_codecs=True,
|
||||
)
|
||||
|
||||
|
||||
class AsyncCrawlResponse(BaseModel):
|
||||
html: str
|
||||
@@ -47,10 +65,14 @@ class AsyncCrawlerStrategy(ABC):
|
||||
class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
def __init__(self, use_cached_html=False, js_code=None, **kwargs):
|
||||
self.use_cached_html = use_cached_html
|
||||
self.user_agent = kwargs.get("user_agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36")
|
||||
self.user_agent = kwargs.get(
|
||||
"user_agent",
|
||||
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
|
||||
"(KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
|
||||
)
|
||||
self.proxy = kwargs.get("proxy")
|
||||
self.headless = kwargs.get("headless", True)
|
||||
self.browser_type = kwargs.get("browser_type", "chromium") # New parameter
|
||||
self.browser_type = kwargs.get("browser_type", "chromium")
|
||||
self.headers = kwargs.get("headers", {})
|
||||
self.sessions = {}
|
||||
self.session_ttl = 1800
|
||||
@@ -83,9 +105,14 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
"headless": self.headless,
|
||||
"args": [
|
||||
"--disable-gpu",
|
||||
"--disable-dev-shm-usage",
|
||||
"--disable-setuid-sandbox",
|
||||
"--no-sandbox",
|
||||
"--disable-dev-shm-usage",
|
||||
"--disable-blink-features=AutomationControlled",
|
||||
"--disable-infobars",
|
||||
"--window-position=0,0",
|
||||
"--ignore-certificate-errors",
|
||||
"--ignore-certificate-errors-spki-list",
|
||||
# "--headless=new", # Use the new headless mode
|
||||
]
|
||||
}
|
||||
|
||||
@@ -94,7 +121,6 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
proxy_settings = ProxySettings(server=self.proxy)
|
||||
browser_args["proxy"] = proxy_settings
|
||||
|
||||
|
||||
# Select the appropriate browser based on the browser_type
|
||||
if self.browser_type == "firefox":
|
||||
self.browser = await self.playwright.firefox.launch(**browser_args)
|
||||
@@ -147,8 +173,10 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
|
||||
def _cleanup_expired_sessions(self):
|
||||
current_time = time.time()
|
||||
expired_sessions = [sid for sid, (_, _, last_used) in self.sessions.items()
|
||||
if current_time - last_used > self.session_ttl]
|
||||
expired_sessions = [
|
||||
sid for sid, (_, _, last_used) in self.sessions.items()
|
||||
if current_time - last_used > self.session_ttl
|
||||
]
|
||||
for sid in expired_sessions:
|
||||
asyncio.create_task(self.kill_session(sid))
|
||||
|
||||
@@ -188,8 +216,8 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
return await self.csp_compliant_wait(page, f"() => {{{wait_for}}}", timeout)
|
||||
except Error:
|
||||
raise ValueError(f"Invalid wait_for parameter: '{wait_for}'. "
|
||||
"It should be either a valid CSS selector, a JavaScript function, "
|
||||
"or explicitly prefixed with 'js:' or 'css:'.")
|
||||
"It should be either a valid CSS selector, a JavaScript function, "
|
||||
"or explicitly prefixed with 'js:' or 'css:'.")
|
||||
|
||||
async def csp_compliant_wait(self, page: Page, user_wait_function: str, timeout: float = 30000):
|
||||
wrapper_js = f"""
|
||||
@@ -254,8 +282,7 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
print(f"Error processing iframe {i}: {str(e)}")
|
||||
|
||||
# Return the page object
|
||||
return page
|
||||
|
||||
return page
|
||||
|
||||
async def crawl(self, url: str, **kwargs) -> AsyncCrawlResponse:
|
||||
response_headers = {}
|
||||
@@ -268,6 +295,7 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
if not context:
|
||||
context = await self.browser.new_context(
|
||||
user_agent=self.user_agent,
|
||||
viewport={"width": 1920, "height": 1080},
|
||||
proxy={"server": self.proxy} if self.proxy else None
|
||||
)
|
||||
await context.set_extra_http_headers(self.headers)
|
||||
@@ -275,18 +303,58 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
self.sessions[session_id] = (context, page, time.time())
|
||||
else:
|
||||
context = await self.browser.new_context(
|
||||
user_agent=self.user_agent,
|
||||
proxy={"server": self.proxy} if self.proxy else None
|
||||
user_agent=self.user_agent,
|
||||
viewport={"width": 1920, "height": 1080},
|
||||
proxy={"server": self.proxy} if self.proxy else None
|
||||
)
|
||||
await context.set_extra_http_headers(self.headers)
|
||||
|
||||
if kwargs.get("override_navigator", False):
|
||||
# Inject scripts to override navigator properties
|
||||
await context.add_init_script("""
|
||||
// Pass the Permissions Test.
|
||||
const originalQuery = window.navigator.permissions.query;
|
||||
window.navigator.permissions.query = (parameters) => (
|
||||
parameters.name === 'notifications' ?
|
||||
Promise.resolve({ state: Notification.permission }) :
|
||||
originalQuery(parameters)
|
||||
);
|
||||
Object.defineProperty(navigator, 'webdriver', {
|
||||
get: () => undefined
|
||||
});
|
||||
window.navigator.chrome = {
|
||||
runtime: {},
|
||||
// Add other properties if necessary
|
||||
};
|
||||
Object.defineProperty(navigator, 'plugins', {
|
||||
get: () => [1, 2, 3, 4, 5],
|
||||
});
|
||||
Object.defineProperty(navigator, 'languages', {
|
||||
get: () => ['en-US', 'en'],
|
||||
});
|
||||
Object.defineProperty(document, 'hidden', {
|
||||
get: () => false
|
||||
});
|
||||
Object.defineProperty(document, 'visibilityState', {
|
||||
get: () => 'visible'
|
||||
});
|
||||
""")
|
||||
|
||||
page = await context.new_page()
|
||||
# await stealth_async(page) #, stealth_config)
|
||||
|
||||
# Add console message and error logging
|
||||
page.on("console", lambda msg: print(f"Console: {msg.text}"))
|
||||
page.on("pageerror", lambda exc: print(f"Page Error: {exc}"))
|
||||
|
||||
try:
|
||||
if self.verbose:
|
||||
print(f"[LOG] 🕸️ Crawling {url} using AsyncPlaywrightCrawlerStrategy...")
|
||||
|
||||
if self.use_cached_html:
|
||||
cache_file_path = os.path.join(Path.home(), ".crawl4ai", "cache", hashlib.md5(url.encode()).hexdigest())
|
||||
cache_file_path = os.path.join(
|
||||
Path.home(), ".crawl4ai", "cache", hashlib.md5(url.encode()).hexdigest()
|
||||
)
|
||||
if os.path.exists(cache_file_path):
|
||||
html = ""
|
||||
with open(cache_file_path, "r") as f:
|
||||
@@ -296,12 +364,21 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
meta = json.load(f)
|
||||
response_headers = meta.get("response_headers", {})
|
||||
status_code = meta.get("status_code")
|
||||
response = AsyncCrawlResponse(html=html, response_headers=response_headers, status_code=status_code)
|
||||
response = AsyncCrawlResponse(
|
||||
html=html, response_headers=response_headers, status_code=status_code
|
||||
)
|
||||
return response
|
||||
|
||||
if not kwargs.get("js_only", False):
|
||||
await self.execute_hook('before_goto', page)
|
||||
response = await page.goto(url, wait_until="domcontentloaded", timeout=kwargs.get("page_timeout", 60000))
|
||||
|
||||
response = await page.goto(
|
||||
url, wait_until="domcontentloaded", timeout=kwargs.get("page_timeout", 60000)
|
||||
)
|
||||
|
||||
# response = await page.goto("about:blank")
|
||||
# await page.evaluate(f"window.location.href = '{url}'")
|
||||
|
||||
await self.execute_hook('after_goto', page)
|
||||
|
||||
# Get status code and headers
|
||||
@@ -311,37 +388,29 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
status_code = 200
|
||||
response_headers = {}
|
||||
|
||||
|
||||
await page.wait_for_selector('body')
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight)")
|
||||
|
||||
js_code = kwargs.get("js_code", kwargs.get("js", self.js_code))
|
||||
if js_code:
|
||||
if isinstance(js_code, str):
|
||||
r = await page.evaluate(js_code)
|
||||
await page.evaluate(js_code)
|
||||
elif isinstance(js_code, list):
|
||||
for js in js_code:
|
||||
await page.evaluate(js)
|
||||
|
||||
# await page.wait_for_timeout(100)
|
||||
await page.wait_for_load_state('networkidle')
|
||||
# Check for on execution even
|
||||
# Check for on execution event
|
||||
await self.execute_hook('on_execution_started', page)
|
||||
|
||||
# New code to handle the wait_for parameter
|
||||
# Example usage:
|
||||
# await crawler.crawl(
|
||||
# url,
|
||||
# js_code="// some JavaScript code",
|
||||
# wait_for="""() => {
|
||||
# return document.querySelector('#my-element') !== null;
|
||||
# }"""
|
||||
# )
|
||||
# Example of using a CSS selector:
|
||||
# await crawler.crawl(
|
||||
# url,
|
||||
# wait_for="#my-element"
|
||||
# )
|
||||
if kwargs.get("simulate_user", False):
|
||||
# Simulate user interactions
|
||||
await page.mouse.move(100, 100)
|
||||
await page.mouse.down()
|
||||
await page.mouse.up()
|
||||
await page.keyboard.press('ArrowDown')
|
||||
|
||||
# Handle the wait_for parameter
|
||||
wait_for = kwargs.get("wait_for")
|
||||
if wait_for:
|
||||
try:
|
||||
@@ -349,13 +418,9 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
except Exception as e:
|
||||
raise RuntimeError(f"Wait condition failed: {str(e)}")
|
||||
|
||||
# Check if kwargs has screenshot=True then take screenshot
|
||||
screenshot_data = None
|
||||
if kwargs.get("screenshot"):
|
||||
screenshot_data = await self.take_screenshot(url)
|
||||
|
||||
|
||||
|
||||
# New code to update image dimensions
|
||||
# Update image dimensions
|
||||
update_image_dimensions_js = """
|
||||
() => {
|
||||
return new Promise((resolve) => {
|
||||
@@ -428,12 +493,19 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
|
||||
html = await page.content()
|
||||
await self.execute_hook('before_return_html', page, html)
|
||||
|
||||
# Check if kwargs has screenshot=True then take screenshot
|
||||
screenshot_data = None
|
||||
if kwargs.get("screenshot"):
|
||||
screenshot_data = await self.take_screenshot(url)
|
||||
|
||||
if self.verbose:
|
||||
print(f"[LOG] ✅ Crawled {url} successfully!")
|
||||
|
||||
if self.use_cached_html:
|
||||
cache_file_path = os.path.join(Path.home(), ".crawl4ai", "cache", hashlib.md5(url.encode()).hexdigest())
|
||||
cache_file_path = os.path.join(
|
||||
Path.home(), ".crawl4ai", "cache", hashlib.md5(url.encode()).hexdigest()
|
||||
)
|
||||
with open(cache_file_path, "w", encoding="utf-8") as f:
|
||||
f.write(html)
|
||||
# store response headers and status code in cache
|
||||
@@ -443,7 +515,6 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
"status_code": status_code
|
||||
}, f)
|
||||
|
||||
|
||||
async def get_delayed_content(delay: float = 5.0) -> str:
|
||||
if self.verbose:
|
||||
print(f"[LOG] Waiting for {delay} seconds before retrieving content for {url}")
|
||||
@@ -463,59 +534,10 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
finally:
|
||||
if not session_id:
|
||||
await page.close()
|
||||
await context.close()
|
||||
|
||||
# try:
|
||||
# html = await _crawl()
|
||||
# return sanitize_input_encode(html)
|
||||
# except Error as e:
|
||||
# raise Error(f"Failed to crawl {url}: {str(e)}")
|
||||
# except Exception as e:
|
||||
# raise Exception(f"Failed to crawl {url}: {str(e)}")
|
||||
|
||||
async def execute_js(self, session_id: str, js_code: str, wait_for_js: str = None, wait_for_css: str = None) -> AsyncCrawlResponse:
|
||||
"""
|
||||
Execute JavaScript code in a specific session and optionally wait for a condition.
|
||||
|
||||
:param session_id: The ID of the session to execute the JS code in.
|
||||
:param js_code: The JavaScript code to execute.
|
||||
:param wait_for_js: JavaScript condition to wait for after execution.
|
||||
:param wait_for_css: CSS selector to wait for after execution.
|
||||
:return: AsyncCrawlResponse containing the page's HTML and other information.
|
||||
:raises ValueError: If the session does not exist.
|
||||
"""
|
||||
if not session_id:
|
||||
raise ValueError("Session ID must be provided")
|
||||
|
||||
if session_id not in self.sessions:
|
||||
raise ValueError(f"No active session found for session ID: {session_id}")
|
||||
|
||||
context, page, last_used = self.sessions[session_id]
|
||||
|
||||
try:
|
||||
await page.evaluate(js_code)
|
||||
|
||||
if wait_for_js:
|
||||
await page.wait_for_function(wait_for_js)
|
||||
|
||||
if wait_for_css:
|
||||
await page.wait_for_selector(wait_for_css)
|
||||
|
||||
# Get the updated HTML content
|
||||
html = await page.content()
|
||||
|
||||
# Get response headers and status code (assuming these are available)
|
||||
response_headers = await page.evaluate("() => JSON.stringify(performance.getEntriesByType('resource')[0].responseHeaders)")
|
||||
status_code = await page.evaluate("() => performance.getEntriesByType('resource')[0].responseStatus")
|
||||
|
||||
# Update the last used time for this session
|
||||
self.sessions[session_id] = (context, page, time.time())
|
||||
|
||||
return AsyncCrawlResponse(html=html, response_headers=response_headers, status_code=status_code)
|
||||
except Error as e:
|
||||
raise Error(f"Failed to execute JavaScript or wait for condition in session {session_id}: {str(e)}")
|
||||
|
||||
async def crawl_many(self, urls: List[str], **kwargs) -> List[AsyncCrawlResponse]:
|
||||
semaphore_count = kwargs.get('semaphore_count', calculate_semaphore_count())
|
||||
semaphore_count = kwargs.get('semaphore_count', 5) # Adjust as needed
|
||||
semaphore = asyncio.Semaphore(semaphore_count)
|
||||
|
||||
async def crawl_with_semaphore(url):
|
||||
@@ -526,7 +548,7 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
results = await asyncio.gather(*tasks, return_exceptions=True)
|
||||
return [result if not isinstance(result, Exception) else str(result) for result in results]
|
||||
|
||||
async def take_screenshot(self, url: str, wait_time = 1000) -> str:
|
||||
async def take_screenshot(self, url: str, wait_time=1000) -> str:
|
||||
async with await self.browser.new_context(user_agent=self.user_agent) as context:
|
||||
page = await context.new_page()
|
||||
try:
|
||||
@@ -549,4 +571,5 @@ class AsyncPlaywrightCrawlerStrategy(AsyncCrawlerStrategy):
|
||||
img.save(buffered, format="JPEG")
|
||||
return base64.b64encode(buffered.getvalue()).decode('utf-8')
|
||||
finally:
|
||||
await page.close()
|
||||
await page.close()
|
||||
|
||||
|
||||
@@ -195,6 +195,7 @@ class AsyncWebCrawler:
|
||||
image_description_min_word_threshold=kwargs.get(
|
||||
"image_description_min_word_threshold", IMAGE_DESCRIPTION_MIN_WORD_THRESHOLD
|
||||
),
|
||||
**kwargs,
|
||||
)
|
||||
if verbose:
|
||||
print(
|
||||
|
||||
@@ -33,6 +33,7 @@ class WebScrappingStrategy(ContentScrappingStrategy):
|
||||
return await asyncio.to_thread(self._get_content_of_website_optimized, url, html, **kwargs)
|
||||
|
||||
def _get_content_of_website_optimized(self, url: str, html: str, word_count_threshold: int = MIN_WORD_THRESHOLD, css_selector: str = None, **kwargs) -> Dict[str, Any]:
|
||||
success = True
|
||||
if not html:
|
||||
return None
|
||||
|
||||
@@ -273,10 +274,41 @@ class WebScrappingStrategy(ContentScrappingStrategy):
|
||||
if base64_pattern.match(src):
|
||||
# Replace base64 data with empty string
|
||||
img['src'] = base64_pattern.sub('', src)
|
||||
|
||||
try:
|
||||
str(body)
|
||||
except Exception as e:
|
||||
# Reset body to the original HTML
|
||||
success = False
|
||||
body = BeautifulSoup(html, 'html.parser')
|
||||
|
||||
# Create a new div with a special ID
|
||||
error_div = body.new_tag('div', id='crawl4ai_error_message')
|
||||
error_div.string = '''
|
||||
Crawl4AI Error: This page is not fully supported.
|
||||
|
||||
Possible reasons:
|
||||
1. The page may have restrictions that prevent crawling.
|
||||
2. The page might not be fully loaded.
|
||||
|
||||
Suggestions:
|
||||
- Try calling the crawl function with these parameters:
|
||||
simulate_user=True, override_navigator=True
|
||||
- Set headless=False to visualize what's happening on the page.
|
||||
|
||||
If the issue persists, please check the page's structure and any potential anti-crawling measures.
|
||||
'''
|
||||
|
||||
# Append the error div to the body
|
||||
body.body.append(error_div)
|
||||
|
||||
print(f"[LOG] 😧 Error: After processing the crawled HTML and removing irrelevant tags, nothing was left in the page. Check the markdown for further details.")
|
||||
|
||||
|
||||
cleaned_html = str(body).replace('\n\n', '\n').replace(' ', ' ')
|
||||
|
||||
h = CustomHTML2Text()
|
||||
h.ignore_links = True
|
||||
h.ignore_links = not kwargs.get('include_links_on_markdown', False)
|
||||
h.body_width = 0
|
||||
try:
|
||||
markdown = h.handle(cleaned_html)
|
||||
@@ -294,7 +326,7 @@ class WebScrappingStrategy(ContentScrappingStrategy):
|
||||
return {
|
||||
'markdown': markdown,
|
||||
'cleaned_html': cleaned_html,
|
||||
'success': True,
|
||||
'success': success,
|
||||
'media': media,
|
||||
'links': links,
|
||||
'metadata': meta
|
||||
|
||||
@@ -692,8 +692,8 @@ def get_content_of_website_optimized(url: str, html: str, word_count_threshold:
|
||||
for img in imgs:
|
||||
src = img.get('src', '')
|
||||
if base64_pattern.match(src):
|
||||
# Replace base64 data with empty string
|
||||
img['src'] = base64_pattern.sub('', src)
|
||||
|
||||
cleaned_html = str(body).replace('\n\n', '\n').replace(' ', ' ')
|
||||
cleaned_html = sanitize_html(cleaned_html)
|
||||
|
||||
|
||||
@@ -379,6 +379,18 @@ async def crawl_custom_browser_type():
|
||||
print(result.markdown[:500])
|
||||
print("Time taken: ", time.time() - start)
|
||||
|
||||
async def crawl_with_user_simultion():
|
||||
async with AsyncWebCrawler(verbose=True, headless=True) as crawler:
|
||||
url = "YOUR-URL-HERE"
|
||||
result = await crawler.arun(
|
||||
url=url,
|
||||
bypass_cache=True,
|
||||
simulate_user = True,# Causes a series of random mouse movements and clicks to simulate user interaction
|
||||
override_navigator = True # Overrides the navigator object to make it look like a real user
|
||||
)
|
||||
|
||||
print(result.markdown)
|
||||
|
||||
async def speed_comparison():
|
||||
# print("\n--- Speed Comparison ---")
|
||||
# print("Firecrawl (simulated):")
|
||||
|
||||
Reference in New Issue
Block a user