system: You are an expert security code reviewer. You will be shown a source code file. Your task is to name the single function or class that contains the specified CWE vulnerability.

OUTPUT FORMAT: Respond with the exact function or class name (no parentheses, no qualifiers, no module prefixes), wrapped in \boxed{...}. Example: `\boxed{salted_hmac}`. Output the boxed name ONLY -- no explanation, no other text.

user: ```python
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from collections import OrderedDict
from cryptacular.bcrypt import BCRYPTPasswordManager
import datetime

from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText

from models import User, Group, Criteria
import os

from pyramid.httpexceptions import HTTPFound, HTTPForbidden
from pyramid.security import remember, forget
from pyramid.view import view_config

from random import randint
import smtplib


@view_config(route_name='home',
             renderer='templates/home.jinja2')
def home_view(request):
    return {'username': request.authenticated_userid}


@view_config(route_name='user_create',
             renderer='templates/user_create.jinja2')
def user_create_view(request):

    username = request.authenticated_userid

    if request.method == 'POST':

        try:
            manager = BCRYPTPasswordManager()
            username = request.params.get('username')
            password = request.params.get('password')
            hashed = manager.encode(password)
            email = request.params.get('email')
            user = User.add(
                username=username,
                password=hashed,
                email=email,
            )
            Criteria.add(user=user)
            headers = remember(request, username)

            return HTTPFound(request.route_url('send_email'), headers=headers)
        except:
            return {}
    return {'username': username}


@view_config(route_name='send_email', permission='authn')
def send_verify_email(request):

    ver_code = randint(1000, 9999)

    username = request.authenticated_userid
    user = User.lookup_by_attribute(username=username)[0]
    user.edit(id=user.id, ver_code=int(ver_code))

    fromaddr = "tastebot@gmail.com"
    toaddr = user.email

    msg = MIMEMultipart()
    msg["From"] = fromaddr
    msg["To"] = toaddr
    msg["Subject"] = "Your Tastebuddies Verification Code"

    body = ''

    here = os.path.dirname(os.path.abspath(__file__))
    email_directory = os.path.join(here, 'static', 'email_templates')
    body_template = os.path.join(email_directory, 'body.txt')
    with open(body_template, 'r') as fh:
        body = str(fh.read())

    body = body.format(ver_code=ver_code)

    msg.attach(MIMEText(body, 'plain'))

    server = smtplib.SMTP('smtp.gmail.com', 587)
    server.starttls()
    server.login("tastebot", 'TASTEBUDDIES')
    text = msg.as_string()

    server.sendmail(fromaddr, toaddr, text)

    return HTTPFound(request.route_url('verify'))


@view_config(route_name='verify',
             permission='authn',
             renderer='templates/verify.jinja2')
def verify(request):
    error_msg = None
    username = request.authenticated_userid
    user = User.lookup_by_attribute(username=username)[0]

    if request.method == "POST":
        user_vcode = int(request.params.get('verify_code'))
        db_vcode = user.ver_code

        if user_vcode == db_vcode:
            user.edit(id=user.id, confirmed=True)

            action = HTTPFound(
                request.route_url('profile_detail', username=username)
            )

    action = {'username': username, 'error_msg': error_msg}

    return action


def do_login(request):
    login_result = False
    manager = BCRYPTPasswordManager()

    entered_username = request.params.get('username', None)
    entered_password = request.params.get('password', None)

    user_obj = User.lookup_by_attribute(username=entered_username)[0]
    db_username = user_obj.username

    if entered_username == db_username:
        db_hashed = user_obj.password
        # manager.check returns BOOL
        login_result = manager.check(db_hashed, entered_password)

    return login_result


def passes_authentication(request):
    username = request.params.get('username', None)
    password = request.params.get('password', None)

    if not (username and password):
        raise ValueError('Both username and password are required')

    return do_login(request)


def passes_verification(request):
    username = request.params.get('username', None)
    udata = User.lookup_by_attribute(username=username)[0]

    try:
        verified_status = udata.confirmed
    except:
        verified_status = False

    return verified_status


@view_config(route_name='user_login',
             renderer='templates/login.jinja2')
def login(request):
    error_msg = None
    username = request.params.get('username', '')
    result = None

    if request.method == 'POST':
        error_msg = 'Login Failed'
        authn = False

        try:
            authn = passes_authentication(request)

        except ValueError as e:
            error_msg = str(e)

        if authn is True:
            headers = remember(request, username)

            if passes_verification(request):
                result = HTTPFound(request.route_url(
                    'profile_detail',
                    username=username),
                    headers=headers,
                )
            else:
                result = HTTPFound(request.route_url(
                    'verify'),
                    headers=headers,
                )

    if not result:
        result = {'error_msg': error_msg, 'username': username}

    return result


@view_config(route_name='logout', permission='authn')
def logout(request):
    headers = forget(request)
    return HTTPFound(request.route_url('home'), headers=headers)


@view_config(route_name='profile_detail',
             renderer='templates/profile_detail.jinja2')
def profile_detail_view(request):
    """will allow the user who owns the profile or any user who is in a group
    with that user to see that users current informmation and criteria.
    """
    if not (request.has_permission('owner')
            or request.has_permission('connect')):
        return HTTPForbidden()

    user = User.lookup_by_attribute(username=request.matchdict['username'])[0]
    profile = {}
    profile['username'] = request.authenticated_userid,
    profile['user'] = user
    profile['criteria'] = Criteria.lookup_by_attribute(user=user)[0]
    return profile


@view_config(route_name='profile_edit',
             permission='authn',
             renderer='templates/profile_edit.jinja2')
def profile_edit_view(request):
    """returns current user information.  On POST collects all information
    fromt the page and edits the user and criteria accordingly.
    """
    username = request.authenticated_userid
    user = User.lookup_by_attribute(username=username)[0]
    criteria = Criteria.lookup_by_attribute(user=user)[0]
    if request.method == 'POST':
        User.edit(id=user.id,
                  username=username,
                  firstname=request.params.get('first_name'),
                  lastname=request.params.get('last_name'),
                  restaurants=request.params.get('favorite_restaurants'),
                  food=request.params.get('favorite_food')
                  )
        Criteria.edit(id=criteria.id,
                      location=request.params.getall('location'),
                      taste=request.params.getall('taste'),
                      diet=request.params.getall('diet'),
                      cost=request.params.getall('cost'),
                      age=request.params.getall('age')
                      )
        headers = remember(request, username)
        return HTTPFound(request.route_url(
                         'profile_detail', username=username
                         ),
                         headers=headers)
    profile = {}
    profile['criteria'] = criteria
    profile['username'] = username
    profile['user'] = user
    return profile


@view_config(route_name='group_create',
             permission='authn',
             renderer='templates/group_create.jinja2')
def group_create_view(request):
    """Collects all information from the page and instanciates a new
    group and its corresponding criteria.
    """
    username = request.authenticated_userid
    admin = User.lookup_by_attribute(username=username)[0]
    if request.method == 'POST':
        group = Group.add(name=request.params.get('name'),
                          description=request.params.get('description'),
                          admin=admin, users=[admin], forum=OrderedDict())
        Criteria.add(location=request.params.getall('location'),
                     taste=request.params.getall('taste'),
                     diet=request.params.getall('diet'),
                     cost=request.params.getall('cost'),
                     age=request.params.getall('age'),
                     group=group)
        return HTTPFound(request.route_url('group_detail',
                         group_name=group.name))
    profile = {}
    profile['criteria'] = Criteria()
    profile['username'] = username
    return profile


@view_config(route_name='group_detail',
             renderer='templates/group_detail.jinja2')
def group_detail_view(request):
    """returns current group information.  If recievng input form a form
    will add that user as a group member if they aren't already.  Will look
    to see whether a new discussion is being created and if so, add it
    to the group forum.  If a new post on an existing discussion is created
    that post will be added to the appropriate discussion.  Discussions
    are returned in reverse order.
    """
    username = request.authenticated_userid
    group = Group.lookup_by_attribute(name=request.matchdict['group_name'])[0]
    criteria = Criteria.lookup_by_attribute(group=group)[0]
    if request.method == 'POST':
        user = User.lookup_by_attribute(username=username)[0]
        user.groups.append(group)
        time = datetime.datetime.utcnow()
        if request.params.get('title'):
            title = request.params.get('title')
            group.forum[title] = [(request.params.get('post'), username, time)]
            group.edit(id=group.id, forum=group.forum)
        else:
            title = request.params.items()[0][0]
            post = request.params.items()[0][1]
            group.forum[title].append((post, username, time))
            group.edit(id=group.id, forum=group.forum)
        return HTTPFound(request.route_url(
                         'group_detail',
                         group_name=request.matchdict['group_name'],
                         ))
    profile = {}
    forum = OrderedDict()
    for _ in range(len(group.forum)):
        to_add = group.forum.popitem()
        forum[to_add[0]] = to_add[1]
    profile['forum'] = forum
    profile['criteria'] = criteria
    profile['group'] = group
    profile['username'] = username
    return profile


@view_config(route_name='group_edit',
             permission='authn',
             renderer='templates/group_edit.jinja2')
def group_edit_view(request):
    """returns current group information for editing and then collects
    all information that has been added by the user whether new or existing
    and edits the existing entries.
    """
    username = request.authenticated_userid
    group = Group.lookup_by_attribute(name=request.matchdict['group_name'])[0]
    criteria = Criteria.lookup_by_attribute(group=group)[0]
    if request.method == 'POST':
        criteria = Criteria.edit(location=request.params.getall('location'),
                                 taste=request.params.getall('taste'),
                                 diet=request.params.getall('diet'),
                                 cost=request.params.getall('cost'),
                                 age=request.params.getall('age'),
                                 id=criteria.id)
        group = Group.edit(name=request.params.get('name'),
                           description=request.params.get('description'),
                           id=group.id)
        return HTTPFound(request.route_url('group_detail',
                                           group_name=group.name))

    profile = {}
    profile['criteria'] = criteria
    profile['group'] = group
    profile['username'] = username

    return profile


conn_err_msg = """
Pyramid is having a problem using your SQL database.  The problem
might be caused by one of the following things:

1.  You may need to run the "initialize_tastebuddies_db" script
    to initialize your database tables.  Check your virtual
    environment's "bin" directory for this script and try to run it.

2.  Your database server may not be running.  Check that the
    database server referred to by the "sqlalchemy.url" setting in
    your "development.ini" file is running.

After you fix the problem, please restart the Pyramid application to
try it again.
"""

```

Name the function or class in this code that contains a `CWE-209: Generation of Error Message Containing Sensitive Information` vulnerability.
Answer: login