| import random |
| import time |
| |
| from wptserve.utils import isomorphic_decode |
| |
| |
| """ |
| This script serves |
| """ |
| |
| def main(request, response): |
| inlineOrExternal = request.GET.first(b"inlineOrExternal", b"null") |
| hasBlockingStylesheet = request.GET.first(b"hasBlockingStylesheet", b"true") == b"true" |
| result = request.GET.first(b"result", b"success") |
| type = u"text/javascript" if request.GET.first(b"type", b"classic") == b"classic" else u"module" |
| |
| response.headers.set(b"Content-Type", b"text/html; charset=utf-8") |
| response.headers.set(b"Transfer-Encoding", b"chunked") |
| response.write_status_headers() |
| |
| # Step 1: Start parsing. |
| body = u"""<!DOCTYPE html> |
| <head> |
| <script> |
| parent.postMessage("fox", "*"); |
| </script> |
| """ |
| |
| if hasBlockingStylesheet: |
| body += u""" |
| <link rel="stylesheet" href="slow-flag-setter.py?result=css&cache=%f"> |
| """ % random.random() |
| |
| body += u""" |
| </head> |
| <body> |
| """ |
| |
| if inlineOrExternal == b"inline" or inlineOrExternal == b"external" or inlineOrExternal == b"empty-src": |
| body += u""" |
| <streaming-element> |
| """ |
| |
| # Trigger DOM processing |
| body += u"A" * 100000 |
| |
| response.writer.write(u"%x\r\n" % len(body)) |
| response.writer.write(body) |
| response.writer.write(u"\r\n") |
| |
| body = u"" |
| |
| if inlineOrExternal == b"inline": |
| time.sleep(1) |
| body += u""" |
| <script id="s1" type="%s" |
| onload="scriptOnLoad()" |
| onerror="scriptOnError(event)"> |
| if (!window.readyToEvaluate) { |
| window.didExecute = "executed too early"; |
| } else { |
| window.didExecute = "executed"; |
| } |
| """ % type |
| if result == b"parse-error": |
| body += u"1=2 parse error\n" |
| |
| body += u""" |
| </script> |
| </streaming-element> |
| """ |
| elif inlineOrExternal == b"external": |
| time.sleep(1) |
| body += u""" |
| <script id="s1" type="%s" |
| src="slow-flag-setter.py?result=%s&cache=%s" |
| onload="scriptOnLoad()" |
| onerror="scriptOnError(event)"></script> |
| </streaming-element> |
| """ % (type, isomorphic_decode(result), random.random()) |
| elif inlineOrExternal == b"empty-src": |
| time.sleep(1) |
| body += u""" |
| <script id="s1" type="%s" |
| src="" |
| onload="scriptOnLoad()" |
| onerror="scriptOnError(event)"></script> |
| </streaming-element> |
| """ % (type,) |
| |
| # // if readyToEvaluate is false, the script is probably |
| # // wasn't blocked by stylesheets as expected. |
| |
| # Trigger DOM processing |
| body += u"B" * 100000 |
| |
| response.writer.write(u"%x\r\n" % len(body)) |
| response.writer.write(body) |
| response.writer.write(u"\r\n") |
| |
| response.writer.write(u"0\r\n") |
| response.writer.write(u"\r\n") |
