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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/>.
from itsdangerous import BadSignature
from mediagoblin import messages
from mediagoblin.db.models import LocalUser
from mediagoblin.decorators import require_active_login
from mediagoblin.plugins.basic_auth import forms, tools
from mediagoblin.tools.crypto import get_timed_signer_url
from mediagoblin.tools.mail import email_debug_message
from mediagoblin.tools.response import redirect, render_to_response, render_404
from mediagoblin.tools.translate import pass_to_ugettext as _
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 = 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 = LocalUser.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 = LocalUser.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.plugins.basic_auth.forgot_password')
success_message = _("An email has been sent with instructions "
"on how to change your password.")
if user and user.has_privilege(u'active') is False:
# 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 "
"inactive 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:
email_debug_message(request)
tools.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_token']:
return render_404(request)
formdata_vars = formdata['vars']
# Catch error if token is faked or expired
try:
token = get_timed_signer_url("mail_verification_token") \
.loads(formdata_vars['token'], max_age=10*24*3600)
except BadSignature:
messages.add_message(
request,
messages.ERROR,
_('The verification key or user id is incorrect.'))
return redirect(
request,
'index')
# check if it's a valid user id
user = LocalUser.query.filter_by(id=int(token)).first()
# no user in db
if not user:
messages.add_message(
request, messages.ERROR,
_('The user id is incorrect.'))
return redirect(
request, 'index')
# check if user active and has email verified
if user.has_privilege(u'active'):
cp_form = forms.ChangeForgotPassForm(formdata_vars)
if request.method == 'POST' and cp_form.validate():
user.pw_hash = tools.bcrypt_gen_password_hash(
cp_form.password.data)
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})
## Commenting this out temporarily because I'm checking into
## what's going on with user.email_verified.
##
## ... if this commit lasts long enough for anyone but me (cwebber) to
## notice it, they should pester me to remove this or remove it
## themselves ;)
#
# if not user.email_verified:
# messages.add_message(
# request,
# messages.ERROR,
# _('You need to verify your email before you can reset your'
# ' password.'))
if not user.status == 'active':
messages.add_message(
request,
messages.ERROR,
_("You are no longer an active user. Please contact the system "
"admin to reactivate your account."))
return redirect(
request, 'index')
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_token': 'token' in formdata_vars}
return formdata
@require_active_login
def change_pass(request):
form = forms.ChangePassForm(request.form)
user = request.user
if request.method == 'POST' and form.validate():
if not tools.bcrypt_check_password(
form.old_password.data, user.pw_hash):
form.old_password.errors.append(
_('Wrong password'))
return render_to_response(
request,
'mediagoblin/plugins/basic_auth/change_pass.html',
{'form': form,
'user': user})
# Password matches
user.pw_hash = tools.bcrypt_gen_password_hash(
form.new_password.data)
user.save()
messages.add_message(
request,
messages.SUCCESS,
_('Your password was changed successfully'))
return redirect(request, 'mediagoblin.edit.account')
return render_to_response(
request,
'mediagoblin/plugins/basic_auth/change_pass.html',
{'form': form,
'user': user})
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