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# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import uuid
import datetime
import forms as auth_forms
from mediagoblin.tools.response import render_to_response, redirect, render_404
from mediagoblin.db.models import User
from mediagoblin.tools.translate import pass_to_ugettext as _
from mediagoblin import messages
from mediagoblin.auth.views import email_debug_message
from mediagoblin.auth.lib import send_fp_verification_email
from mediagoblin.auth import lib as auth_lib
def forgot_password(request):
"""
Forgot password view
Sends an email with an url to renew forgotten password.
Use GET querystring parameter 'username' to pre-populate the input field
"""
fp_form = auth_forms.ForgotPassForm(request.form,
username=request.args.get('username'))
if not (request.method == 'POST' and fp_form.validate()):
# Either GET request, or invalid form submitted. Display the template
return render_to_response(request,
'mediagoblin/plugins/basic_auth/forgot_password.html', {'fp_form': fp_form})
# If we are here: method == POST and form is valid. username casing
# has been sanitized. Store if a user was found by email. We should
# not reveal if the operation was successful then as we don't want to
# leak if an email address exists in the system.
found_by_email = '@' in fp_form.username.data
if found_by_email:
user = User.query.filter_by(
email=fp_form.username.data).first()
# Don't reveal success in case the lookup happened by email address.
success_message = _("If that email address (case sensitive!) is "
"registered an email has been sent with "
"instructions on how to change your password.")
else: # found by username
user = User.query.filter_by(
username=fp_form.username.data).first()
if user is None:
messages.add_message(request,
messages.WARNING,
_("Couldn't find someone with that username."))
return redirect(request, 'mediagoblin.auth.forgot_password')
success_message = _("An email has been sent with instructions "
"on how to change your password.")
if user and not(user.email_verified and user.status == 'active'):
# Don't send reminder because user is inactive or has no verified email
messages.add_message(request,
messages.WARNING,
_("Could not send password recovery email as your username is in"
"active or your account's email address has not been verified."))
return redirect(request, 'mediagoblin.user_pages.user_home',
user=user.username)
# SUCCESS. Send reminder and return to login page
if user:
user.fp_verification_key = unicode(uuid.uuid4())
user.fp_token_expire = datetime.datetime.now() + \
datetime.timedelta(days=10)
user.save()
email_debug_message(request)
send_fp_verification_email(user, request)
messages.add_message(request, messages.INFO, success_message)
return redirect(request, 'mediagoblin.auth.login')
def verify_forgot_password(request):
"""
Check the forgot-password verification and possibly let the user
change their password because of it.
"""
# get form data variables, and specifically check for presence of token
formdata = _process_for_token(request)
if not formdata['has_userid_and_token']:
return render_404(request)
formdata_token = formdata['vars']['token']
formdata_userid = formdata['vars']['userid']
formdata_vars = formdata['vars']
# check if it's a valid user id
user = User.query.filter_by(id=formdata_userid).first()
if not user:
return render_404(request)
# check if we have a real user and correct token
if ((user and user.fp_verification_key and
user.fp_verification_key == unicode(formdata_token) and
datetime.datetime.now() < user.fp_token_expire
and user.email_verified and user.status == 'active')):
cp_form = auth_forms.ChangePassForm(formdata_vars)
if request.method == 'POST' and cp_form.validate():
user.pw_hash = auth_lib.bcrypt_gen_password_hash(
cp_form.password.data)
user.fp_verification_key = None
user.fp_token_expire = None
user.save()
messages.add_message(
request,
messages.INFO,
_("You can now log in using your new password."))
return redirect(request, 'mediagoblin.auth.login')
else:
return render_to_response(
request,
'mediagoblin/plugins/basic_auth/change_fp.html',
{'cp_form': cp_form})
# in case there is a valid id but no user with that id in the db
# or the token expired
else:
return render_404(request)
def _process_for_token(request):
"""
Checks for tokens in formdata without prior knowledge of request method
For now, returns whether the userid and token formdata variables exist, and
the formdata variables in a hash. Perhaps an object is warranted?
"""
# retrieve the formdata variables
if request.method == 'GET':
formdata_vars = request.GET
else:
formdata_vars = request.form
formdata = {
'vars': formdata_vars,
'has_userid_and_token':
'userid' in formdata_vars and 'token' in formdata_vars}
return formdata
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