Facebook Login Auhtentication Sample Python Code (Handling Proxy Server)

Facebook Login Auhtentication:

clientid = settings.SOCIAL_AUTH_CREDENTIALS['facebook']['client_id']

client_secret = settings.SOCIAL_AUTH_CREDENTIALS['facebook']['client_secret']

redirect_uri = settings.SOCIAL_AUTH_CREDENTIALS['facebook']['redirect_uri']

scope = ['email','publish_stream']

def login(request):

    statekey = str(uuid.uuid1())

    request.session['facebookstatekey'] = statekey

    url = 'https://www.facebook.com/dialog/oauth?client_id=%s&redirect_uri=%s&scope=%s&state=%s' % (clientid,redirect_uri,','.join(scope),statekey)

    return HttpResponseRedirect(url)

def callback(request):

    code = request.GET.get('code','')

    statekey = request.GET.get('state','')

    if len(code) > 0 and statekey == request.session.get('facebookstatekey',''):

        url = 'https://graph.facebook.com/oauth/access_token'

        values = {'code' : code,

                  'client_id' : clientid,

                  'client_secret' : client_secret,

                  'redirect_uri': redirect_uri}

        

        # proxy handling. Not required on main server

        useproxy = getattr(settings, "PROXY_ENABLED", False)

        if useproxy:

            passmgr = urllib2.HTTPPasswordMgrWithDefaultRealm()

            passmgr.add_password(None, settings.PROXY_SERVER, settings.PROXY_USER, settings.PROXY_PASSWORD)

            authinfo = urllib2.ProxyBasicAuthHandler(passmgr)

            proxy_support = urllib2.ProxyHandler({"http" : settings.PROXY_SERVER})

            opener = urllib2.build_opener(proxy_support, authinfo)

            urllib2.install_opener(opener)

        

        data = urllib.urlencode(values)

        req = urllib2.Request(url, data)

        response = urllib2.urlopen(req)

        the_page = response.read()

        

        fb_cred = {}

        

        pagekeys = the_page.split('&')

        for itm in pagekeys:

            itemval = itm.split('=')

            fb_cred[itemval[0]] = itemval[1]

        

        fb_access_token = fb_cred['access_token']

        fb_expires = fb_cred['expires']

        

        url = 'https://graph.facebook.com/me?access_token=%s' % fb_access_token

        req = urllib2.Request(url)

        response = urllib2.urlopen(req)

        the_page = response.read()

        

        user_info = json.loads(the_page)

        

        print user_info

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written by, Thanga Vignesh Raja T