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forms.py
265 lines | 11.2 KiB | text/x-python | PythonLexer
""" this is forms validation classes
http://formencode.org/module-formencode.validators.html
for list off all availible validators
we can create our own validators
The table below outlines the options which can be used in a schema in addition to the validators themselves
pre_validators [] These validators will be applied before the schema
chained_validators [] These validators will be applied after the schema
allow_extra_fields False If True, then it is not an error when keys that aren't associated with a validator are present
filter_extra_fields False If True, then keys that aren't associated with a validator are removed
if_key_missing NoDefault If this is given, then any keys that aren't available but are expected will be replaced with this value (and then validated). This does not override a present .if_missing attribute on validators. NoDefault is a special FormEncode class to mean that no default values has been specified and therefore missing keys shouldn't take a default value.
ignore_key_missing False If True, then missing keys will be missing in the result, if the validator doesn't have .if_missing on it already
<name> = formencode.validators.<name of validator>
<name> must equal form name
list=[1,2,3,4,5]
for SELECT use formencode.All(OneOf(list), Int())
"""
from formencode import All
from formencode.validators import UnicodeString, OneOf, Int, Number, Regex, \
Email, Bool, StringBoolean
from pylons import session
from pylons.i18n.translation import _
from pylons_app.lib.auth import get_crypt_password
import pylons_app.lib.helpers as h
from pylons_app.model import meta
from pylons_app.model.db import User, Repository
from sqlalchemy.exc import OperationalError
from sqlalchemy.orm.exc import NoResultFound, MultipleResultsFound
from webhelpers.pylonslib.secure_form import authentication_token
import datetime
import formencode
import logging
log = logging.getLogger(__name__)
#this is needed to translate the messages using _() in validators
class State_obj(object):
_ = staticmethod(_)
#===============================================================================
# VALIDATORS
#===============================================================================
class ValidAuthToken(formencode.validators.FancyValidator):
messages = {'invalid_token':_('Token mismatch')}
def validate_python(self, value, state):
if value != authentication_token():
raise formencode.Invalid(self.message('invalid_token', state,
search_number=value), value, state)
class ValidUsername(formencode.validators.FancyValidator):
def validate_python(self, value, state):
if value in ['default', 'new_user']:
raise formencode.Invalid(_('Invalid username'), value, state)
class ValidPassword(formencode.validators.FancyValidator):
def to_python(self, value, state):
return get_crypt_password(value)
class ValidAuth(formencode.validators.FancyValidator):
messages = {
'invalid_password':_('invalid password'),
'invalid_login':_('invalid user name'),
'disabled_account':_('Your acccount is disabled')
}
#error mapping
e_dict = {'username':messages['invalid_login'],
'password':messages['invalid_password']}
e_dict_disable = {'username':messages['disabled_account']}
def validate_python(self, value, state):
sa = meta.Session
crypted_passwd = get_crypt_password(value['password'])
username = value['username']
try:
user = sa.query(User).filter(User.username == username).one()
except (NoResultFound, MultipleResultsFound, OperationalError) as e:
log.error(e)
user = None
raise formencode.Invalid(self.message('invalid_password',
state=State_obj), value, state,
error_dict=self.e_dict)
if user:
if user.active:
if user.username == username and user.password == crypted_passwd:
from pylons_app.lib.auth import AuthUser
auth_user = AuthUser()
auth_user.username = username
auth_user.is_authenticated = True
auth_user.is_admin = user.admin
auth_user.user_id = user.user_id
session['hg_app_user'] = auth_user
session.save()
log.info('user %s is now authenticated', username)
try:
user.last_login = datetime.datetime.now()
sa.add(user)
sa.commit()
except (OperationalError) as e:
log.error(e)
sa.rollback()
return value
else:
log.warning('user %s not authenticated', username)
raise formencode.Invalid(self.message('invalid_password',
state=State_obj), value, state,
error_dict=self.e_dict)
else:
log.warning('user %s is disabled', username)
raise formencode.Invalid(self.message('disabled_account',
state=State_obj),
value, state,
error_dict=self.e_dict_disable)
class ValidRepoUser(formencode.validators.FancyValidator):
def to_python(self, value, state):
sa = meta.Session
try:
self.user_db = sa.query(User).filter(User.username == value).one()
except Exception:
raise formencode.Invalid(_('This username is not valid'),
value, state)
return self.user_db.user_id
def ValidRepoName(edit=False):
class _ValidRepoName(formencode.validators.FancyValidator):
def to_python(self, value, state):
slug = h.repo_name_slug(value)
if slug in ['_admin']:
raise formencode.Invalid(_('This repository name is disallowed'),
value, state)
sa = meta.Session
if sa.query(Repository).get(slug) and not edit:
raise formencode.Invalid(_('This repository already exists'),
value, state)
return slug
return _ValidRepoName
class ValidPerms(formencode.validators.FancyValidator):
messages = {'perm_new_user_name':_('This username is not valid')}
def to_python(self, value, state):
perms_update = []
perms_new = []
#build a list of permission to update and new permission to create
for k, v in value.items():
if k.startswith('perm_'):
if k.startswith('perm_new_user'):
new_perm = value.get('perm_new_user', False)
new_user = value.get('perm_new_user_name', False)
if new_user and new_perm:
if (new_user, new_perm) not in perms_new:
perms_new.append((new_user, new_perm))
else:
usr = k[5:]
if usr == 'default':
if value['private']:
#set none for default when updating to private repo
v = 'repository.none'
perms_update.append((usr, v))
value['perms_updates'] = perms_update
value['perms_new'] = perms_new
sa = meta.Session
for k, v in perms_new:
try:
self.user_db = sa.query(User).filter(User.username == k).one()
except Exception:
msg = self.message('perm_new_user_name',
state=State_obj)
raise formencode.Invalid(msg, value, state, error_dict={'perm_new_user_name':msg})
return value
class ValidSettings(formencode.validators.FancyValidator):
def to_python(self, value, state):
#settings form can't edit user
if value.has_key('user'):
del['value']['user']
return value
#===============================================================================
# FORMS
#===============================================================================
class LoginForm(formencode.Schema):
allow_extra_fields = True
filter_extra_fields = True
username = UnicodeString(
strip=True,
min=3,
not_empty=True,
messages={
'empty':_('Please enter a login'),
'tooShort':_('Enter a value %(min)i characters long or more')}
)
password = UnicodeString(
strip=True,
min=3,
not_empty=True,
messages={
'empty':_('Please enter a password'),
'tooShort':_('Enter a value %(min)i characters long or more')}
)
#chained validators have access to all data
chained_validators = [ValidAuth]
def UserForm(edit=False):
class _UserForm(formencode.Schema):
allow_extra_fields = True
filter_extra_fields = True
username = All(UnicodeString(strip=True, min=3, not_empty=True), ValidUsername)
if edit:
new_password = All(UnicodeString(strip=True, min=3, not_empty=False), ValidPassword)
else:
password = All(UnicodeString(strip=True, min=3, not_empty=False), ValidPassword)
active = StringBoolean(if_missing=False)
name = UnicodeString(strip=True, min=3, not_empty=True)
lastname = UnicodeString(strip=True, min=3, not_empty=True)
email = Email(not_empty=True)
return _UserForm
def RepoForm(edit=False):
class _RepoForm(formencode.Schema):
allow_extra_fields = True
filter_extra_fields = False
repo_name = All(UnicodeString(strip=True, min=1, not_empty=True), ValidRepoName(edit))
description = UnicodeString(strip=True, min=3, not_empty=True)
private = StringBoolean(if_missing=False)
if edit:
user = All(Int(not_empty=True), ValidRepoUser)
chained_validators = [ValidPerms]
return _RepoForm
def RepoSettingsForm(edit=False):
class _RepoForm(formencode.Schema):
allow_extra_fields = True
filter_extra_fields = False
repo_name = All(UnicodeString(strip=True, min=1, not_empty=True), ValidRepoName(edit))
description = UnicodeString(strip=True, min=3, not_empty=True)
private = StringBoolean(if_missing=False)
chained_validators = [ValidPerms, ValidSettings]
return _RepoForm