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Reading cookies from most Firefox versions…

Yesterday, I wrote about how to reading the cookies from Firefox 3.0 from Python. This code snippet extends the previous example by adding code which finds the cookie file on various different operating systems (Windows, Linux and Mac OS X). Hope this helps people who need to do this.

#! /usr/bin/env python
# Reading the cookie's from Firefox/Mozilla. Supports Firefox 3.0 and Firefox 2.x
# Author: Noah Fontes <nfontes AT cynigram DOT com>, 
#         Tim Ansell <mithro AT mithis DOT com>
# License: MIT
def sqlite2cookie(filename):
    from cStringIO import StringIO
    from pysqlite2 import dbapi2 as sqlite
    con = sqlite.connect(filename)
    cur = con.cursor()
    cur.execute("select host, path, isSecure, expiry, name, value from moz_cookies")
    ftstr = ["FALSE","TRUE"]
    s = StringIO()
# Netscape HTTP Cookie File
# This is a generated file!  Do not edit.
    for item in cur.fetchall():
        s.write("%s\t%s\t%s\t%s\t%s\t%s\t%s\n" % (
            item[0], ftstr[item[0].startswith('.')], item[1],
            ftstr[item[2]], item[3], item[4], item[5]))
    cookie_jar = cookielib.MozillaCookieJar()
    cookie_jar._really_load(s, '', True, True)
    return cookie_jar
import cookielib
import os
import sys
import logging
import ConfigParser
# Set up cookie jar paths
def _get_firefox_cookie_jar (path):
    profiles_ini = os.path.join(path, 'profiles.ini')
    if not os.path.exists(path) or not os.path.exists(profiles_ini):
        return None
    # Open profiles.ini and read the path for the first profile
    profiles_ini_reader = ConfigParser.ConfigParser();
    profile_name = profiles_ini_reader.get('Profile0', 'Path', True)
    profile_path = os.path.join(path, profile_name)
    if not os.path.exists(profile_path):
        return None
        if os.path.join(profile_path, 'cookies.sqlite'):
            return os.path.join(profile_path, 'cookies.sqlite')
        elif os.path.join(profile_path, 'cookies.txt'):
            return os.path.join(profile_path, 'cookies.txt')
def _get_firefox_nt_cookie_jar ():
    # See
        import _winreg
        import win32api
    except ImportError:
        logging.error('Cannot load winreg -- running windows and win32api loaded?')
    key = _winreg.OpenKey(_winreg.HKEY_CURRENT_USER, r'Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders')
        result = _winreg.QueryValueEx(key, 'AppData')
    except WindowsError:
        return None
        if ret[1] == _winreg.REG_EXPAND_SZ:
            result = win32api.ExpandEnvironmentStrings(ret[0])
            result = ret[0]
    return _get_firefox_cookie_jar(os.path.join(result, r'Mozilla\Firefox\Profiles'))
def _get_firefox_posix_cookie_jar ():
    return _get_firefox_cookie_jar(os.path.expanduser(r'~/.mozilla/firefox'))
def _get_firefox_mac_cookie_jar ():
    # First of all...
    result = _get_firefox_cookie_jar(os.path.expanduser(r'~/Library/Mozilla/Firefox/Profiles'))
    if result == None:
        result = _get_firefox_cookie_jar(os.path.expanduser(r'~/Library/Application Support/Firefox/Profiles'))
    return result
    'nt': _get_firefox_nt_cookie_jar,
    'posix': _get_firefox_posix_cookie_jar,
    'mac': _get_firefox_mac_cookie_jar
cookie_jar = None
    cookie_jar = FIREFOX_COOKIE_JARS[]()
except KeyError:
    cookie_jar = None
path = raw_input('Path to cookie jar file [%s]: ' % cookie_jar)
if path.strip():
    # Some input specified, set it
    cookie_jar = os.path.realpath(os.path.expanduser(path.strip()))
if cookie_jar.endswith('.sqlite'):
    cookie_jar = sqlite2cookie(cookie_jar)
    cookie_jar = cookielib.MozillaCookieJar(cookie_jar)

Edit: The latest version of this code can be found at and includes numerous fixes and updates.

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$#%#! UTF-8 in Python

This is not a post about using UTF-8 properly in Python, but doing evil, evil things.

Python dutifully respects the $LANG environment variable on the terminal. It turns out that a lot of the time this variable is totally wrong, it’s set to something like C even though the terminal is UTF-8 encoding.

The problem is that there is no easy way to change a file’s encoding after it’s open, well until this horrible hack! The following code will force the output encoding of stdout to UTF-8 even if started with LANG=C.

# License: MIT
    print u"\u263A"
except Exception, e:
    print e
import sys
print sys.stdout.encoding
from ctypes import pythonapi, py_object, c_char_p
PyFile_SetEncoding = pythonapi.PyFile_SetEncoding
PyFile_SetEncoding.argtypes = (py_object, c_char_p)
if not PyFile_SetEncoding(sys.stdout, "UTF-8"):
    raise ValueError
    print u"\u263A"
except Exception, e:
    print e
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