Hi all, I've never coded python or trac before so please excuse me if
what I am doing is totally wrong, but I cannot for the life of me
figure this out.
What i've done is totally rip out the trac session / login system,
because what I want to do is replace it with an XML API call to a URL
on my website. The basic code is:
-----
IAuthenticator
authenticate method
if we haven't already checked
call api to validate user
return valid or not
-----
Problem is, it seems trac or python remembers all values set to the
self.authenticated field, across every refresh, even if different
people are viewing the page. How can I make it so this function runs
once every page reload, saves if the user is authenticated and thats
it? My code is:
-----
import sys, urllib
from genshi.builder import tag
from xml.dom import minidom
from trac.core import *
from trac.web.api import IAuthenticator
from trac.web import chrome
from trac.web.chrome import INavigationContributor
from trac.db.api import DatabaseManager
from trac.config import Option
class AuthXMLModule(Component):
""" Automatically try and login anonymous users on each request.
"""
implements(IAuthenticator, INavigationContributor)
authenticated = False
authname = None
# This is here so that the account manager configuration page will
pick
username_cookie = Option('xmlauth', 'username_cookie', None,
'Cookie containing the users id')
password_cookie = Option('xmlauth', 'password_cookie', None,
'Cookie containing the users password')
xml_url = Option('xmlauth', 'xml_url', None,
'URL called with the cookies to validate')
ok_code = Option('xmlauth', 'ok_code', 0,
'XML code indicating the request was a success')
# IAuthenticator methods
def authenticate(self, req):
""" Connect to the API specified and attempt to validate the user """
if not self.authenticated:
self.authenticated = True
if req.incookie.has_key(self.username_cookie) and
req.incookie.has_key(self.password_cookie):
username = req.incookie[self.username_cookie].value
password = req.incookie[self.password_cookie].value
params = urllib.urlencode({'username': username,
'password':
password})
try:
dom =
minidom.parse(urllib.urlopen(self.xml_url, params))
trac = dom.getElementsByTagName("trac")[0]
status =
trac.getElementsByTagName('status')[0].getAttribute
('code')
if status == self.ok_code:
ignore_auth_case =
self.env.config.get('trac',
'ignore_auth_case')
memberdetails =
trac.getElementsByTagName('member')[0]
# member =
memberdetails.getAttribute('siteareaid')
self.authname =
self._get_text(memberdetails.getElementsByTagName
('username')[0].childNodes)
email =
self._get_text(memberdetails.getElementsByTagName('email')
[0].childNodes)
datelastvisit =
self._get_text(memberdetails.getElementsByTagName
('datelastvisit')[0].childNodes)
if ignore_auth_case:
self.authname =
self.authname.lower()
self._populate_user_session([self.authname, email,
datelastvisit])
else:
chrome.add_notice(req,
self._get_text(trac.getElementsByTagName
('status')[0].childNodes))
dom.unlink()
except Exception, e:
self.log.warning('Exception processing the
session data: %s' %
(e))
chrome.add_warning(req, 'An error has occured
logging you in to
trac.')
self.log.error(self.authname)
return self.authname
# INavigationContributor methods
def get_active_navigation_item(self, req):
return 'login'
def get_navigation_items(self, req):
if req.authname and req.authname != 'anonymous':
yield ('metanav', 'login', ('logged in as %s' %
(req.authname)))
else:
yield ('metanav', 'login', 'not logged in')
# Internal methods
def _populate_user_session(self, userinfo):
""" Create user session entries and populate email and last
visit """
# Replace the current session and update the email with data
from the API
uname, email, lastvisit = userinfo
cnx = self.env.get_db_cnx()
try:
cur = cnx.cursor()
cur.execute('REPLACE INTO session (sid, authenticated, '
'last_visit) VALUES (%s, 1, %s)',
(uname, lastvisit))
cnx.commit()
except:
cnx.rollback()
try:
cur = cnx.cursor()
cur.execute("REPLACE INTO session_attribute"
" (sid, authenticated, name, value)"
" VALUES (%s, 1, 'email', %s)",
(uname, email))
cnx.commit()
except:
cnx.rollback()
cnx.close()
def _get_text(self, nodelist):
rc = ""
for node in nodelist:
if node.nodeType == node.TEXT_NODE:
rc = rc + node.data
return rc
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