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diff --git a/README.md b/README.md
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+### Introduction
+
+mowgli (from MAUCLI (Microsoft AutoUpdate Command Line Interface)) is a command-line tool for installing Office 2016 updates.
+
+
+### System Requirements
+
+- Microsoft Office for Mac 2016
+
+
+### Usage
+
+To list all available updates:
+
+```mowgli.py -l```
+
+To update all installed Office applications, just issue:
+
+```sudo mowgli.py -ia```
+
+You can also supply an optional path to the MAU pref file:
+
+```sudo mowgli.py -ia /Users/shared/Library/Preferences/com.microsoft.autoupdate2.plist```
+
+
+Special thanks to [Charles](https://www.charlesproxy.com) - the excellent web debugging proxy for making the reverse-engineering possible!
+
+
+
+### License
+
+Copyright (c) 2016, Filipp Lepalaan All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+ 
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diff --git a/mowgli.py b/mowgli.py
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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import os
+import sys
+import httplib
+import plistlib
+import tempfile
+import subprocess
+
+
+UUID = 'C1297A47-86C4-4C1F-97FA-950631F94777'
+NAMES = {
+    'XCEL15': 'Excel',
+    'ONMC15': 'OneNote',
+    'OPIM15': 'Outlook',
+    'PPT315': 'PowerPoint',
+    'MSWD15': 'Word',
+    'MSau03': 'AutoUpdate',
+    'Merp2': 'Error Reporting',
+    'SLVT': 'Silverlight',
+}
+
+
+BASEURL = '/pr/%s/OfficeMac/' % UUID
+
+
+def get_plist(path):
+    """Return plist dict regardless of format.
+
+    """
+    plist = subprocess.check_output(['/usr/bin/plutil',
+                                     '-convert', 'xml1',
+                                     path, '-o', '-'])
+    return plistlib.readPlistFromString(plist)
+
+
+def check(pref='~/Library/Preferences/com.microsoft.autoupdate2.plist'):
+    """Collect info about available updates.
+
+    """
+    results = []
+
+    try:
+        plist = get_plist(os.path.expanduser(pref))
+    except Exception as e:
+        raise Exception('Failed to read MAU prefs: %s' % e)
+
+    apps = plist.get('Applications')
+
+    for a in apps.items():
+        path, info = a
+        app_id = info.get('Application ID')
+
+        try:
+            app_info = get_plist(os.path.join(path, 'Contents/Info.plist'))
+        except Exception as e:
+            continue
+
+        result = {'id': app_id, 'installed': app_info.get('CFBundleVersion')}
+        result['name'] = NAMES.get(app_id, app_id)
+        result['lcid'] = info.get('LCID')
+
+        # Lync (UCCP14) is special
+        filename = '0409%s.xml' if app_id == 'UCCP14' else '0409%s-chk.xml'
+        conn = httplib.HTTPSConnection('officecdn.microsoft.com')
+
+        conn.request("GET", BASEURL + filename % app_id)
+        data = conn.getresponse().read()
+
+        try:
+            p = plistlib.readPlistFromString(data)
+            if app_id == 'UCCP14':  # Lync being special again
+                p = p[0]
+                result['location'] = p.get('Location')
+                versions = p['Triggers']['Lync']['Versions']
+                result['needs_update'] = result['installed'] in versions
+            else:
+                result['date'] = p.get('Date')
+                result['type'] = p.get('Type')
+                result['available'] = p.get('Update Version')
+                result['needs_update'] = result['installed'] != result['available']
+
+                if result['needs_update']:
+                    url = BASEURL + filename % app_id
+                    conn.request("GET", url.replace('-chk', ''))
+                    data = conn.getresponse().read()
+                    # Fetch the update details
+                    updates = plistlib.readPlistFromString(data)
+                    for i in updates:
+                        if i.get('Baseline Version') == result['installed']:
+                            result['location'] = i.get('Location')
+                            result['size'] = i.get('FullUpdaterSize')
+                            results.append(result)
+        except Exception as e:
+            print('Failed to check %s' % app_id, e)
+
+        finally:
+            conn.close()
+
+    return results
+
+
+def download(url):
+    temp = os.path.join(tempfile.gettempdir(), 'mowgli')
+
+    if not os.path.exists(temp):
+        os.mkdir(temp)
+
+    fn = url.split('/')[-1]
+    fp = os.path.join(temp, fn)
+
+    if not os.path.exists(fp):
+        subprocess.call(['/usr/bin/curl', url, '-o', fp])
+
+    return fp
+
+
+def install(pkg):
+    subprocess.call(['/usr/sbin/installer', '-pkg', pkg, '-target', '/'])
+    os.remove(pkg)
+
+
+if __name__ == '__main__':
+
+    if len(sys.argv) < 2:
+        print("usage: {0} [-l | -i [pref]".format(os.path.basename(sys.argv[0])))
+        sys.exit(1)
+
+    print("* Checking for updates...")
+
+    try:
+        if os.path.exists(sys.argv[2]):
+            updates = check(sys.argv[2])
+    except IndexError as e:
+        pass
+
+    updates = [u for u in updates if u['needs_update']]
+
+    if sys.argv[1] == '-l':
+        for u in updates:
+            print("{id}\t{name}\t{installed}\t{available}\t{size}".format(**u))
+
+    if sys.argv[1] == '-ia':
+        for u in updates:
+            print('* Downloading %s %s' % (u['name'], u['available']))
+            pkg = download(u['location'])
+            print('* Installing %s' % pkg)
+            install(pkg)
+
+    if len(updates) < 1:
+        print("* No updates available")
+        sys.exit(1)
+
+    sys.exit(0)