Fetcher - Using pyppeteerstealth with puppeteer fetcher (#2203)

changedetectionio/content_fetchers/puppeteer.py

@@ -92,15 +92,39 @@ class fetcher(Fetcher):
                                                        ignoreHTTPSErrors=True
                                                        )
         except websockets.exceptions.InvalidStatusCode as e:
-            raise BrowserConnectError(msg=f"Error while trying to connect the browser, Code {e.status_code} (check your access)")
+            raise BrowserConnectError(msg=f"Error while trying to connect the browser, Code {e.status_code} (check your access, whitelist IP, password etc)")
         except websockets.exceptions.InvalidURI:
             raise BrowserConnectError(msg=f"Error connecting to the browser, check your browser connection address (should be ws:// or wss://")
         except Exception as e:
             raise BrowserConnectError(msg=f"Error connecting to the browser {str(e)}")
-        else:
-            self.page = await browser.newPage()
 
-        await self.page.setUserAgent(manage_user_agent(headers=request_headers, current_ua=await self.page.evaluate('navigator.userAgent')))
+        # Better is to launch chrome with the URL as arg
+        # non-headless - newPage() will launch an extra tab/window, .browser should already contain 1 page/tab
+        # headless - ask a new page
+        self.page = (pages := await browser.pages) and len(pages) or await browser.newPage()
+
+        try:
+            from pyppeteerstealth import inject_evasions_into_page
+        except ImportError:
+            logger.debug("pyppeteerstealth module not available, skipping")
+            pass
+        else:
+            # I tried hooking events via self.page.on(Events.Page.DOMContentLoaded, inject_evasions_requiring_obj_to_page)
+            # But I could never get it to fire reliably, so we just inject it straight after
+            await inject_evasions_into_page(self.page)
+
+        # This user agent is similar to what was used when tweaking the evasions in inject_evasions_into_page(..)
+        user_agent = None
+        if request_headers:
+            user_agent = next((value for key, value in request_headers.items() if key.lower().strip() == 'user-agent'), None)
+            if user_agent:
+                await self.page.setUserAgent(user_agent)
+                # Remove it so it's not sent again with headers after
+                [request_headers.pop(key) for key in list(request_headers) if key.lower().strip() == 'user-agent'.lower().strip()]
+
+        if not user_agent:
+            # Attempt to strip 'HeadlessChrome' etc
+            await self.page.setUserAgent(manage_user_agent(headers=request_headers, current_ua=await self.page.evaluate('navigator.userAgent')))
 
         await self.page.setBypassCSP(True)
         if request_headers:

changedetectionio/flask_app.py

@@ -771,7 +771,7 @@ def changedetection_app(config=None, datastore_o=None):
                                      jq_support=jq_support,
                                      playwright_enabled=os.getenv('PLAYWRIGHT_DRIVER_URL', False),
                                      settings_application=datastore.data['settings']['application'],
-                                     using_global_webdriver_wait=default['webdriver_delay'] is None,
+                                     using_global_webdriver_wait=not default['webdriver_delay'],
                                      uuid=uuid,
                                      visualselector_enabled=visualselector_enabled,
                                      watch=watch

requirements.txt

@@ -77,8 +77,8 @@ jq~=1.3; python_version >= "3.8" and sys_platform == "linux"
 pillow
 # playwright is installed at Dockerfile build time because it's not available on all platforms
 
-# experimental release
 pyppeteer-ng==2.0.0rc5
+pyppeteerstealth>=0.0.4
 
 # Include pytest, so if theres a support issue we can ask them to run these tests on their setup
 pytest ~=7.2