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validators.py
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validators.py
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import re
import datetime
from pylons.i18n import _, ungettext, N_, gettext
from ckan.lib.navl.dictization_functions import Invalid, Missing, missing, unflatten
from ckan.authz import Authorizer
from ckan.logic import check_access, NotAuthorized
from ckan.lib.helpers import date_str_to_datetime
def package_id_not_changed(value, context):
package = context.get('package')
if package and value != package.id:
raise Invalid(_('Cannot change value of key from %s to %s. '
'This key is read-only') % (package.id, value))
return value
def int_validator(value, context):
if isinstance(value, int):
return value
try:
if value.strip() == '':
return None
return int(value)
except (AttributeError, ValueError), e:
raise Invalid(_('Invalid integer'))
def isodate(value, context):
if isinstance(value, datetime.datetime):
return value
if value == '':
return None
try:
date = date_str_to_datetime(value)
except (TypeError, ValueError), e:
raise Invalid(_('Date format incorrect'))
return date
def no_http(value, context):
model = context['model']
session = context['session']
if 'http:' in value:
raise Invalid(_('No links are allowed in the log_message.'))
return value
def package_id_exists(value, context):
model = context['model']
session = context['session']
result = session.query(model.Package).get(value)
if not result:
raise Invalid(_('Dataset was not found.'))
return value
def package_name_exists(value, context):
model = context['model']
session = context['session']
result = session.query(model.Package).filter_by(name=value).first()
if not result:
raise Invalid(_('Dataset with name %r does not exist.') % str(value))
return value
def package_id_or_name_exists(value, context):
model = context['model']
session = context['session']
result = session.query(model.Package).get(value)
if result:
return value
result = session.query(model.Package).filter_by(name=value).first()
if not result:
raise Invalid(_('Dataset was not found.'))
return result.id
def extras_unicode_convert(extras, context):
for extra in extras:
extras[extra] = unicode(extras[extra])
return extras
name_match = re.compile('[a-z0-9_\-]*$')
def name_validator(val, context):
# check basic textual rules
if len(val) < 2:
raise Invalid(_('Name must be at least %s characters long') % 2)
if not name_match.match(val):
raise Invalid(_('Url must be purely lowercase alphanumeric '
'(ascii) characters and these symbols: -_'))
return val
def package_name_validator(key, data, errors, context):
model = context["model"]
session = context["session"]
package = context.get("package")
query = session.query(model.Package.name).filter_by(name=data[key])
if package:
package_id = package.id
else:
package_id = data.get(key[:-1] + ("id",))
if package_id and package_id is not missing:
query = query.filter(model.Package.id <> package_id)
result = query.first()
if result:
errors[key].append(_('That URL is already in use.'))
def duplicate_extras_key(key, data, errors, context):
unflattened = unflatten(data)
extras = unflattened.get('extras', [])
extras_keys = []
for extra in extras:
if not extra.get('deleted'):
extras_keys.append(extra['key'])
for extra_key in set(extras_keys):
extras_keys.remove(extra_key)
if extras_keys:
errors[key].append(_('Duplicate key "%s"') % extras_keys[0])
def group_name_validator(key, data, errors, context):
model = context['model']
session = context['session']
group = context.get('group')
query = session.query(model.Group.name).filter_by(name=data[key])
if group:
group_id = group.id
else:
group_id = data.get(key[:-1] + ('id',))
if group_id and group_id is not missing:
query = query.filter(model.Group.id <> group_id)
result = query.first()
if result:
errors[key].append(_('Group name already exists in database'))
def tag_length_validator(value, context):
if len(value) < 2:
raise Invalid(
_('Tag "%s" length is less than minimum %s') % (value, 2)
)
return value
def tag_name_validator(value, context):
tagname_match = re.compile('[^,"]*$', re.UNICODE)
if not tagname_match.match(value):
raise Invalid(_('Tag "%s" must not contain commas nor quotes' % value))
return value
def tag_not_uppercase(value, context):
tagname_uppercase = re.compile('[A-Z]')
if tagname_uppercase.search(value):
raise Invalid(_('Tag "%s" must not be uppercase' % (value)))
return value
def tag_string_convert(key, data, errors, context):
value = data[key]
# Ensure a tag string with only whitespace
# is converted to the empty list of tags.
# If we were to split(',') on this string,
# we'd get the non-empty list, [''].
if not value.strip():
return
tags = map(lambda s: s.strip(),
value.split(','))
for num, tag in enumerate(tags):
data[('tags', num, 'name')] = tag
for tag in tags:
tag_length_validator(tag, context)
tag_name_validator(tag, context)
def ignore_not_admin(key, data, errors, context):
model = context['model']
user = context.get('user')
if user and Authorizer.is_sysadmin(user):
return
authorized = False
pkg = context.get('package')
if pkg:
try:
check_access('package_change_state',context)
authorized = True
except NotAuthorized:
authorized = False
if (user and pkg and authorized):
return
data.pop(key)
def user_name_validator(value,context):
model = context['model']
if not model.User.check_name_valid(value):
raise Invalid(
_('That login name is not valid. It must be at least 3 characters, restricted to alphanumerics and these symbols: %s') % '_\-'
)
if not model.User.check_name_available(value):
raise Invalid(
_("That login name is not available.")
)
return value
def user_both_passwords_entered(key, data, errors, context):
password1 = data.get(('password1',),None)
password2 = data.get(('password2',),None)
if password1 is None or password1 == '' or \
password2 is None or password2 == '':
errors[('password',)].append(_('Please enter both passwords'))
def user_password_validator(key, data, errors, context):
value = data[key]
if not value == '' and not isinstance(value, Missing) and not len(value) >= 4:
errors[('password',)].append(_('Your password must be 4 characters or longer'))
def user_passwords_match(key, data, errors, context):
password1 = data.get(('password1',),None)
password2 = data.get(('password2',),None)
if not password1 == password2:
errors[key].append(_('The passwords you entered do not match'))
else:
#Set correct password
data[('password',)] = password1
def user_password_not_empty(key, data, errors, context):
'''Only check if password is present if the user is created via action API.
If not, user_both_passwords_entered will handle the validation'''
if not ('password1',) in data and not ('password2',) in data:
password = data.get(('password',),None)
if not password:
errors[key].append(_('Missing value'))
def user_about_validator(value,context):
if 'http://' in value or 'https://' in value:
raise Invalid(_('Edit not allowed as it looks like spam. Please avoid links in your description.'))
return value