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#!/usr/bin/env python
"""
Converts Internet Explorer 'capture network traffic' XML to a HAR file.
Turns out that XML is just a HAR file anyways, but in XML form. So this
just converts it to JSON, and Bob's your uncle.
Requires Python 2.7+ and LXML.
"""
from __future__ import unicode_literals
import argparse
import json
from lxml import objectify
import sys
if sys.version_info > (3,):
str_type = str
else:
str_type = unicode
list_things = {
'pages',
'entries',
'cookies',
'queryString',
'headers',
}
def xml_to_dict(element):
if element.tag in list_things:
return [xml_to_dict(e) for e in element.getchildren()]
else:
if element.getchildren():
return {e.tag: xml_to_dict(e) for e in element.getchildren()}
else:
return str_type(element.pyval)
def main():
parser = argparse.ArgumentParser(description="Convert IE's crazy XML-HAR into a real HAR file")
parser.add_argument('infile', type=argparse.FileType('r'), default=sys.stdin)
parser.add_argument('outfile', type=argparse.FileType('w'), default=sys.stdout)
args = parser.parse_args()
tree = objectify.parse(args.infile)
root = tree.getroot()
d = {root.tag: xml_to_dict(root)}
json.dump(d, args.outfile, indent=2, sort_keys=True)
if __name__ == '__main__':
main()
@josecolella

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josecolella commented Feb 20, 2017

Thanks for this. As Internet Explorer 11 does not export to .har, this script was very useful

@TomWoodFR

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TomWoodFR commented Mar 8, 2017

This is fantastic, thank you very much.

@cordylus

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cordylus commented May 1, 2017

This just saved my bacon. Thanks!

@Martijnvandebrug

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Martijnvandebrug commented Jun 21, 2017

YES, thanks alot! The other alternatives where getting Fiddler to work on linux or get a windows VM....

@fbender

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fbender commented Aug 18, 2017

For anyone struggling with file encodings on the Windows (MSYSGIT) command line like me, I created a fork that forces UTF-8 when reading and writing the files. This small fix cost me almost three hours today since I was puzzled why lxml or an extra open() would ignore my encoding (unless I specify 'ascii'). Turns out argparse has a bit more magic in it than I thought.

@mikeytown2

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mikeytown2 commented Oct 25, 2017

Coming from php; had to do this to the json in order for it to be validated in http://www.softwareishard.com/har/viewer/ Source xml came from IE11.

$contents = file_get_contents('NetworkData.har');
$json = json_decode($contents, TRUE);
foreach ($json['log']['entries'] as $key => &$values) {
  $values['time'] = (int) $values['time'];
  $values['timings']['receive'] = (int) $values['timings']['receive'];
  $values['timings']['send'] = (int) $values['timings']['send'];
  $values['timings']['wait'] = (int) $values['timings']['wait'];
  if (!isset($values['response']['redirectURL'])) {
    $values['response']['redirectURL'] = '';
  }
  if (!isset($values['cache'])) {
    $values['cache'] = array();
  }
}
$output = json_encode($json, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP | JSON_HEX_QUOT | JSON_PRETTY_PRINT);
file_put_contents('NetworkData2.har', $output);
@bladeoflight16

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bladeoflight16 commented Dec 14, 2017

Does it work in Python 3, or only in 2.7?

@bthalmayr

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bthalmayr commented Aug 7, 2018

Thanks a lot for this handy tool, much appreciated!

@mohitt

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mohitt commented May 9, 2019

No Bob is not my uncle :P

@giriva

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giriva commented Sep 25, 2019

I want to record chrome session in HAR and playback it in IE. Is there an option?

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