/usr/lib/python2.7/dist-packages/sagenb/flask_version/authentication.py is in python-sagenb 1.0.1+ds1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 | import os
import random
from flask import Blueprint, url_for, render_template, request, session, redirect, g, current_app
from .decorators import with_lock
from flask_babel import gettext, ngettext, lazy_gettext
_ = gettext
authentication = Blueprint('authentication',
'sagenb.flask_version.authentication')
##################
# Authentication #
##################
@authentication.before_request
def lookup_current_user():
g.username = None
if 'username' in session:
g.username = session['username']
@authentication.route('/login', methods=['POST', 'GET'])
def login(template_dict={}):
from sagenb.misc.misc import SAGE_VERSION
template_dict.update({'accounts': g.notebook.user_manager().get_accounts(),
'recovery': g.notebook.conf()['email'],
'next': request.values.get('next', ''),
'sage_version': SAGE_VERSION,
'openid': g.notebook.conf()['openid'],
'username_error': False,
'password_error': False})
if request.method == 'POST':
username = request.form['email']
password = request.form['password']
if username == 'COOKIESDISABLED':
return _("Please enable cookies or delete all Sage cookies and localhost cookies in your browser and try again.")
# we only handle ascii usernames.
from sagenb.notebook.misc import is_valid_username, is_valid_password
if is_valid_username(username):
try:
U = g.notebook.user_manager().user(username)
except (KeyError, LookupError):
U = None
template_dict['username_error'] = True
else:
U = None
template_dict['username_error'] = True
# It is critically important that it be impossible to login as the
# pub, _sage_, or guest users. This _sage_ user is a fake user that is used
# internally by the notebook for the doc browser and other tasks.
if username in ['_sage_', 'guest', 'pub']:
U = None
template_dict['username_error'] = True
if U is None:
pass
elif (is_valid_password(password, username) and
g.notebook.user_manager().check_password(username, password)):
if U.is_suspended():
#suspended
return _("Your account is currently suspended")
else:
#Valid user, everything is okay
session['username'] = username
session.modified = True
return redirect(request.values.get('next', url_for('base.index')))
else:
template_dict['password_error'] = True
response = current_app.make_response(render_template(os.path.join('html', 'login.html'), **template_dict))
response.set_cookie('cookie_test_%s'%g.notebook.port, 'cookie_test')
return response
@authentication.route('/logout/')
def logout():
username = session.pop('username', None)
g.notebook.logout(username)
return redirect(url_for('base.index'))
################
# Registration #
################
#XXX: Yuck! This global variable should not be here.
#This is data should be stored somewhere more persistant.
waiting = {}
@authentication.route('/register', methods = ['GET','POST'])
@with_lock
def register():
if not g.notebook.user_manager().get_accounts():
return redirect(url_for('base.index'))
from sagenb.notebook.misc import is_valid_username, is_valid_password, \
is_valid_email, do_passwords_match
from sagenb.notebook.challenge import challenge
# VALIDATORS: is_valid_username, is_valid_password,
# do_passwords_match, is_valid_email,
# challenge.is_valid_response
# INPUT NAMES: username, password, retype_password, email +
# challenge fields
# TEMPLATE VARIABLES: error, username, username_missing,
# username_taken, username_invalid, password_missing,
# password_invalid, passwords_dont_match,
# retype_password_missing, email, email_missing,
# email_invalid, email_address, challenge, challenge_html,
# challenge_missing, challenge_invalid
# PRE-VALIDATION setup and hooks.
required = set(['username', 'password'])
empty = set()
validated = set()
# Template variables. We use empty_form_dict for empty forms.
empty_form_dict = {}
template_dict = {}
if g.notebook.conf()['email']:
required.add('email')
empty_form_dict['email'] = True
if g.notebook.conf()['challenge']:
required.add('challenge')
empty_form_dict['challenge'] = True
chal = challenge(g.notebook.conf(),
is_secure = g.notebook.secure,
remote_ip = request.environ['REMOTE_ADDR'])
empty_form_dict['challenge_html'] = chal.html()
template_dict.update(empty_form_dict)
# VALIDATE FIELDS.
# Username. Later, we check if a user with this username
# already exists.
username = request.values.get('username', None)
if username:
if not is_valid_username(username):
template_dict['username_invalid'] = True
elif g.notebook.user_manager().user_exists(username):
template_dict['username_taken'] = True
else:
template_dict['username'] = username
validated.add('username')
else:
template_dict['username_missing'] = True
empty.add('username')
# Password.
password = request.values.get('password', None)
retype_password = request.values.get('retype_password', None)
if password:
if not is_valid_password(password, username):
template_dict['password_invalid'] = True
elif not do_passwords_match(password, retype_password):
template_dict['passwords_dont_match'] = True
else:
validated.add('password')
else:
template_dict['password_missing'] = True
empty.add('password')
# Email address.
email_address = ''
if g.notebook.conf()['email']:
email_address = request.values.get('email', None)
if email_address:
if not is_valid_email(email_address):
template_dict['email_invalid'] = True
else:
template_dict['email_address'] = email_address
validated.add('email')
else:
template_dict['email_missing'] = True
empty.add('email')
# Challenge (e.g., reCAPTCHA).
if g.notebook.conf()['challenge']:
status = chal.is_valid_response(req_args = request.values)
if status.is_valid is True:
validated.add('challenge')
elif status.is_valid is False:
err_code = status.error_code
if err_code:
template_dict['challenge_html'] = chal.html(error_code = err_code)
else:
template_dict['challenge_invalid'] = True
else:
template_dict['challenge_missing'] = True
empty.add('challenge')
# VALIDATE OVERALL.
if empty == required:
# All required fields are empty. Not really an error.
return render_template(os.path.join('html', 'accounts', 'registration.html'),
**empty_form_dict)
elif validated != required:
# Error(s)!
errors = len(required) - len(validated)
template_dict['error'] = 'E ' if errors == 1 else 'Es '
return render_template(os.path.join('html', 'accounts', 'registration.html'),
**template_dict)
# Create an account, if username is unique.
try:
g.notebook.user_manager().add_user(username, password, email_address)
except ValueError:
template_dict['username_taken'] = True
template_dict['error'] = 'E '
form = render_template(os.path.join('html', 'accounts', 'registration.html'),
**template_dict)
return HTMLResponse(stream = form)
#XXX: Add logging support
#log.msg("Created new user '%s'"%username)
# POST-VALIDATION hooks. All required fields should be valid.
if g.notebook.conf()['email']:
from sagenb.notebook.smtpsend import send_mail
from sagenb.notebook.register import make_key, build_msg
# TODO: make this come from the server settings
key = make_key()
listenaddr = g.notebook.interface
port = g.notebook.port
fromaddr = 'no-reply@%s' % listenaddr
body = build_msg(key, username, listenaddr, port, g.notebook.secure)
# Send a confirmation message to the user.
try:
send_mail(fromaddr, email_address,
_("Sage Notebook Registration"), body)
waiting[key] = username
except ValueError:
pass
# Go to the login page.
from sagenb.misc.misc import SAGE_VERSION
template_dict = {'accounts': g.notebook.user_manager().get_accounts(),
'welcome_user': username,
'recovery': g.notebook.conf()['email'],
'sage_version': SAGE_VERSION}
return render_template(os.path.join('html', 'login.html'), **template_dict)
@authentication.route('/confirm')
@with_lock
def confirm():
if not g.notebook.conf()['email']:
return current_app.message(_('The confirmation system is not active.'))
key = int(request.values.get('key', '-1'))
invalid_confirm_key = _("""\
<h1>Invalid confirmation key</h1>
<p>You are reporting a confirmation key that has not been assigned by this
server. Please <a href="/register">register</a> with the server.</p>
""")
try:
username = waiting[key]
user = g.notebook.user(username)
user.set_email_confirmation(True)
except KeyError:
return current_app.message(invalid_confirm_key, '/register')
success = _("""<h1>Email address confirmed for user %(username)s</h1>""", username=username)
del waiting[key]
return current_app.message(success, title=_('Email Confirmed'), username=username)
@authentication.route('/forgotpass')
@with_lock
def forgot_pass():
if not g.notebook.conf()['email']:
return current_app.message(_('The account recovery system is not active.'))
username = request.values.get('username', '').strip()
if not username:
return render_template(os.path.join('html', 'accounts', 'account_recovery.html'))
def error(msg):
return current_app.message(msg, url_for('forgot_pass'))
try:
user = g.notebook.user(username)
except KeyError:
return error(_('Username is invalid.'))
if not user.is_email_confirmed():
return error(_("The e-mail address hasn't been confirmed."))
#XXX: some of this could be factored out into a random passowrd
#function. There are a few places in admin.py that also use it.
from random import choice
import string
chara = string.letters + string.digits
old_pass = user.password()
password = ''.join([choice(chara) for i in range(8)])
from sagenb.notebook.smtpsend import send_mail
from sagenb.notebook.register import build_password_msg
# TODO: make this come from the server settings
listenaddr = g.notebook.interface
port = g.notebook.port
fromaddr = 'no-reply@%s' % listenaddr
body = build_password_msg(password, username, listenaddr, port, g.notebook.secure)
destaddr = user.get_email()
try:
send_mail(fromaddr, destaddr, _("Sage Notebook Account Recovery"), body)
except ValueError:
# the email address is invalid
return error(_("The new password couldn't be sent to %(dest)s.", dest=destaddr))
else:
g.notebook.user_manager().set_password(username, password)
return current_app.message(_("A new password has been sent to your e-mail address."), url_for('base.index'))
|