updated docstring
emdee
1 year ago
parent
28d1d34dbd
commit
6cf32758c1
@ -1,79 +0,0 @@
|
||||
#!/usr/local/bin/python3.sh
|
||||
# -*-mode: python; indent-tabs-mode: nil; py-indent-offset: 4; coding: utf-8 -*
|
||||
|
||||
import sys
|
||||
import os
|
||||
import traceback
|
||||
|
||||
from phantompy import Render
|
||||
|
||||
global LOG
|
||||
import logging
|
||||
import warnings
|
||||
warnings.filterwarnings('ignore')
|
||||
LOG = logging.getLogger()
|
||||
|
||||
class LookFor(Render):
|
||||
|
||||
def __init__(self, url, outfile, jsfile=None):
|
||||
self.uri = url
|
||||
Render.__init__(self, url, outfile, jsfile)
|
||||
|
||||
def ilookfor(self, html):
|
||||
import json
|
||||
marker = '<pre style="word-wrap: break-word; white-space: pre-wrap;">'
|
||||
if marker not in html: return ''
|
||||
i = html.find(marker) + len(marker)
|
||||
html = html[i:]
|
||||
assert html[0] == '{', html
|
||||
i = html.find('</pre')
|
||||
html = html[:i]
|
||||
assert html[-1] == '}', html
|
||||
LOG.debug(f"Found {len(html)} json")
|
||||
o = json.loads(html)
|
||||
if "Answer" not in o.keys() or type(o["Answer"]) != list:
|
||||
LOG.warn(f"FAIL {self.uri}")
|
||||
return 1
|
||||
for elt in o["Answer"]:
|
||||
assert type(elt) == dict, elt
|
||||
assert 'type' in elt, elt
|
||||
if elt['type'] != 16: continue
|
||||
assert 'data' in elt, elt
|
||||
if elt['data'] == 'we-run-this-tor-relay':
|
||||
LOG.info(f"OK {self.uri}")
|
||||
return 0
|
||||
LOG.warn(f"BAD {self.uri}")
|
||||
return 2
|
||||
|
||||
def _html_callback(self, *args):
|
||||
"""print(self, QPrinter, Callable[[bool], None])"""
|
||||
if type(args[0]) is str:
|
||||
self._save(args[0])
|
||||
i = self.ilookfor(args[0])
|
||||
self._exit(i)
|
||||
|
||||
def _save(self, html):
|
||||
sfile = self.outfile.replace('.pdf','.out')
|
||||
# CompleteHtmlSaveFormat SingleHtmlSaveFormat MimeHtmlSaveFormat
|
||||
with open(sfile, 'wt') as ofd:
|
||||
ofd.write(html)
|
||||
LOG.debug(f"Saved {sfile}")
|
||||
|
||||
def _loadFinished(self, result):
|
||||
LOG.debug("phantom.py: Loading finished!")
|
||||
self.toHtml(self._html_callback)
|
||||
|
||||
def main():
|
||||
if (len(sys.argv) < 3):
|
||||
LOG.info("USAGE: lookupdns.py <url> <pdf-file> [<javascript-file>]")
|
||||
else:
|
||||
url = sys.argv[1]
|
||||
outfile = sys.argv[2]
|
||||
jsfile = sys.argv[3] if len(sys.argv) > 3 else None
|
||||
r = LookFor(url, outfile, jsfile)
|
||||
|
||||
sys.exit(0)
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
|
||||
@ -1,260 +0,0 @@
|
||||
#!/usr/local/bin/python3.sh
|
||||
# -*-mode: python; indent-tabs-mode: nil; py-indent-offset: 4; coding: utf-8 -*-
|
||||
# https://gist.github.com/michaelfranzl/91f0cc13c56120391b949f885643e974/raw/a0601515e7a575bc4c7d4d2a20973b29b6c6f2df/phantom.py
|
||||
"""
|
||||
# phantom.py
|
||||
|
||||
Simple but fully scriptable headless QtWebKit browser using PyQt5 in Python3,
|
||||
specialized in executing external JavaScript and generating PDF files. A lean
|
||||
replacement for other bulky headless browser frameworks.
|
||||
|
||||
|
||||
## Usage
|
||||
|
||||
If you have a display attached:
|
||||
|
||||
./phantom.py <url> <pdf-file> [<javascript-file>]
|
||||
|
||||
If you don't have a display attached (i.e. on a remote server):
|
||||
|
||||
xvfb-run ./phantom.py <url> <pdf-file> [<javascript-file>]
|
||||
|
||||
Arguments:
|
||||
|
||||
<url> Can be a http(s) URL or a path to a local file
|
||||
<pdf-file> Path and name of PDF file to generate
|
||||
[<javascript-file>] (optional) Path and name of a JavaScript file to execute
|
||||
|
||||
|
||||
## Features
|
||||
|
||||
* Generate a PDF screenshot of the web page after it is completely loaded.
|
||||
* Optionally execute a local JavaScript file specified by the argument
|
||||
<javascript-file> after the web page is completely loaded, and before
|
||||
the PDF is generated.
|
||||
* console.log's will be printed to stdout.
|
||||
* Easily add new features by changing the source code of this script, without
|
||||
compiling C++ code. For more advanced applications, consider attaching
|
||||
PyQt objects/methods to WebKit's JavaScript space by using
|
||||
`QWebFrame::addToJavaScriptWindowObject()`.
|
||||
|
||||
If you execute an external <javascript-file>, phantom.py has no way of knowing
|
||||
when that script has finished doing its work. For this reason, the external
|
||||
script should execute `console.log("__PHANTOM_PY_DONE__");` when done. This will
|
||||
trigger the PDF generation, after which phantom.py will exit. If no
|
||||
`__PHANTOM_PY_DONE__` string is seen on the console for 10 seconds, phantom.py
|
||||
will exit without doing anything. This behavior could be implemented more
|
||||
elegantly without console.log's but it is the simplest solution.
|
||||
|
||||
It is important to remember that since you're just running WebKit, you can use
|
||||
everything that WebKit supports, including the usual JS client libraries, CSS,
|
||||
CSS @media types, etc.
|
||||
|
||||
|
||||
## Dependencies
|
||||
|
||||
* Python3
|
||||
* PyQt5
|
||||
* xvfb (optional for display-less machines)
|
||||
|
||||
Installation of dependencies in Debian Stretch is easy:
|
||||
|
||||
apt-get install xvfb python3-pyqt5 python3-pyqt5.qtwebkit
|
||||
|
||||
Finding the equivalent for other OSes is an exercise that I leave to you.
|
||||
|
||||
|
||||
## Examples
|
||||
|
||||
Given the following file /tmp/test.html
|
||||
|
||||
<html>
|
||||
<body>
|
||||
<p>foo <span id="id1">foo</span> <span id="id2">foo</span></p>
|
||||
</body>
|
||||
<script>
|
||||
document.getElementById('id1').innerHTML = "bar";
|
||||
</script>
|
||||
</html>
|
||||
|
||||
... and the following file /tmp/test.js:
|
||||
|
||||
document.getElementById('id2').innerHTML = "baz";
|
||||
console.log("__PHANTOM_PY_DONE__");
|
||||
|
||||
... and running this script (without attached display) ...
|
||||
|
||||
xvfb-run python3 phantom.py /tmp/test.html /tmp/out.pdf /tmp/test.js
|
||||
|
||||
... you will get a PDF file /tmp/out.pdf with the contents "foo bar baz".
|
||||
|
||||
Note that the second occurrence of "foo" has been replaced by the web page's own
|
||||
script, and the third occurrence of "foo" by the external JS file.
|
||||
|
||||
|
||||
## License
|
||||
|
||||
Copyright 2017 Michael Karl Franzl
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
this software and associated documentation files (the "Software"), to deal in
|
||||
the Software without restriction, including without limitation the rights to
|
||||
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
||||
of the Software, and to permit persons to whom the Software is furnished to do
|
||||
so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
"""
|
||||
|
||||
import sys
|
||||
import os
|
||||
import traceback
|
||||
import atexit
|
||||
from PyQt5.QtCore import QUrl
|
||||
from PyQt5.QtCore import QTimer
|
||||
from PyQt5.QtWidgets import QApplication
|
||||
from PyQt5.QtPrintSupport import QPrinter
|
||||
from PyQt5.QtWebEngineWidgets import QWebEnginePage as QWebPage
|
||||
|
||||
global LOG
|
||||
import logging
|
||||
import warnings
|
||||
warnings.filterwarnings('ignore')
|
||||
LOG = logging.getLogger()
|
||||
|
||||
def prepare():
|
||||
sfile = '/tmp/test.js'
|
||||
if not os.path.exists(sfile):
|
||||
with open(sfile, 'wt') as ofd:
|
||||
ofd.write("""
|
||||
document.getElementById('id2').innerHTML = "baz";
|
||||
console.log("__PHANTOM_PY_DONE__");
|
||||
""")
|
||||
sys.stderr.write(f"wrote {sfile} ")
|
||||
sfile = '/tmp/test.html'
|
||||
if not os.path.exists(sfile):
|
||||
with open(sfile, 'wt') as ofd:
|
||||
ofd.write("""
|
||||
<html>
|
||||
<body>
|
||||
<p>foo <span id="id1">foo</span> <span id="id2">foo</span></p>
|
||||
</body>
|
||||
<script>
|
||||
document.getElementById('id1').innerHTML = "bar";
|
||||
</script>
|
||||
</html>
|
||||
""")
|
||||
sys.stderr.write(f"wrote {sfile} ")
|
||||
sys.stderr.write("\n")
|
||||
|
||||
class Render(QWebPage):
|
||||
def __init__(self, url, outfile, jsfile=None):
|
||||
self.app = QApplication(sys.argv)
|
||||
|
||||
QWebPage.__init__(self)
|
||||
|
||||
self.jsfile = jsfile
|
||||
self.outfile = outfile
|
||||
|
||||
qurl = QUrl.fromUserInput(url)
|
||||
|
||||
LOG.debug(f"phantom.py: URL= {qurl} OUTFILE={outfile} JSFILE= {jsfile)")
|
||||
|
||||
# The PDF generation only happens when the special string __PHANTOM_PY_DONE__
|
||||
# is sent to console.log(). The following JS string will be executed by
|
||||
# default, when no external JavaScript file is specified.
|
||||
self.js_contents = "setTimeout(function() { console.log('__PHANTOM_PY_DONE__') }, 5000);";
|
||||
|
||||
if jsfile:
|
||||
try:
|
||||
f = open(self.jsfile)
|
||||
self.js_contents = f.read()
|
||||
f.close()
|
||||
except:
|
||||
LOG.error(traceback.format_exc())
|
||||
self._exit(10)
|
||||
|
||||
self.loadFinished.connect(self._loadFinished)
|
||||
self.load(qurl)
|
||||
self.javaScriptConsoleMessage = self._onConsoleMessage
|
||||
|
||||
if False:
|
||||
# Run for a maximum of 10 seconds
|
||||
watchdog = QTimer()
|
||||
watchdog.setSingleShot(True)
|
||||
watchdog.timeout.connect(lambda: self._exit(9))
|
||||
watchdog.start(10000)
|
||||
|
||||
self.app.exec_()
|
||||
|
||||
def _onConsoleMessage(self, *args):
|
||||
if len(args) > 3:
|
||||
level, txt, lineno, filename = args
|
||||
else:
|
||||
level = 1
|
||||
txt, lineno, filename = args
|
||||
LOG.debug(f"CONSOLE {lineno} {txt} {filename}")
|
||||
if "__PHANTOM_PY_DONE__" in txt:
|
||||
# If we get this magic string, it means that the external JS is done
|
||||
self._print()
|
||||
if "__PHANTOM_PY_EXIT__" in txt:
|
||||
self._exit(0)
|
||||
|
||||
def _loadFinished(self, result):
|
||||
LOG.debug(f"phantom.py: Evaluating JS from {self.jsfile}")
|
||||
self.runJavaScript("document.documentElement.contentEditable=true")
|
||||
self.runJavaScript(self.js_contents)
|
||||
|
||||
def _printer_callback(self, *args):
|
||||
"""print(self, QPrinter, Callable[[bool], None])"""
|
||||
# print(f"_printer_callback {self.outfile} {args}")
|
||||
if args[0] is False:
|
||||
i = 1
|
||||
else:
|
||||
i = 0
|
||||
self._exit(i)
|
||||
|
||||
def _print(self):
|
||||
printer = QPrinter()
|
||||
printer.setPageMargins(10, 10, 10, 10, QPrinter.Millimeter)
|
||||
printer.setPaperSize(QPrinter.A4)
|
||||
printer.setCreator("phantom.py by Michael Karl Franzl")
|
||||
printer.setOutputFormat(QPrinter.PdfFormat);
|
||||
printer.setOutputFileName(self.outfile);
|
||||
self.print(printer, self._printer_callback)
|
||||
LOG.debug("phantom.py: Printed")
|
||||
|
||||
def _exit(self, val):
|
||||
LOG.debug(f"phantom.py: Exiting with val {val}")
|
||||
|
||||
# Run for a maximum of 10 seconds
|
||||
watchdog = QTimer()
|
||||
watchdog.setSingleShot(True)
|
||||
watchdog.timeout.connect(lambda: sys.exit(val))
|
||||
watchdog.start(10000)
|
||||
self.app.exit(val)
|
||||
atexit._clear()
|
||||
sys.exit(val)
|
||||
|
||||
def main():
|
||||
if (len(sys.argv) < 3):
|
||||
LOG.info("USAGE: ./phantom.py <url> <pdf-file> [<javascript-file>]")
|
||||
else:
|
||||
url = sys.argv[1]
|
||||
outfile = sys.argv[2]
|
||||
jsfile = sys.argv[3] if len(sys.argv) > 3 else None
|
||||
r = Render(url, outfile, jsfile)
|
||||
|
||||
sys.exit(0)
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
|
||||
Loading…
Reference in New Issue