security: limit the maximum password lenght to 72 characters to prevent possible

server side resource consumption attack.

- bcrypt heavy computation can lead to DOS using a very long password .eg 10**8 lenght.
- we allowed this on registration or on password update

rhodecode/model/forms.py

@@ -1,563 +1,564 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2017 RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # 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 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/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 """
 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())
 
 """
 
 import deform
 import logging
 import formencode
 
 from pkg_resources import resource_filename
 from formencode import All, Pipe
 
 from pylons.i18n.translation import _
 
 from rhodecode import BACKENDS
 from rhodecode.lib import helpers
 from rhodecode.model import validators as v
 
 log = logging.getLogger(__name__)
 
 
 deform_templates = resource_filename('deform', 'templates')
 rhodecode_templates = resource_filename('rhodecode', 'templates/forms')
 search_path = (rhodecode_templates, deform_templates)
 
 
 class RhodecodeFormZPTRendererFactory(deform.ZPTRendererFactory):
     """ Subclass of ZPTRendererFactory to add rhodecode context variables """
     def __call__(self, template_name, **kw):
         kw['h'] = helpers
         return self.load(template_name)(**kw)
 
 
 form_renderer = RhodecodeFormZPTRendererFactory(search_path)
 deform.Form.set_default_renderer(form_renderer)
 
 
 def LoginForm():
     class _LoginForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
         username = v.UnicodeString(
             strip=True,
             min=1,
             not_empty=True,
             messages={
                 'empty': _(u'Please enter a login'),
                 'tooShort': _(u'Enter a value %(min)i characters long or more')
             }
         )
 
         password = v.UnicodeString(
             strip=False,
             min=3,
+            max=72,
             not_empty=True,
             messages={
                 'empty': _(u'Please enter a password'),
                 'tooShort': _(u'Enter %(min)i characters or more')}
         )
 
         remember = v.StringBoolean(if_missing=False)
 
         chained_validators = [v.ValidAuth()]
     return _LoginForm
 
 
 def UserForm(edit=False, available_languages=[], old_data={}):
     class _UserForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
         username = All(v.UnicodeString(strip=True, min=1, not_empty=True),
                        v.ValidUsername(edit, old_data))
         if edit:
             new_password = All(
                 v.ValidPassword(),
-                v.UnicodeString(strip=False, min=6, not_empty=False)
+                v.UnicodeString(strip=False, min=6, max=72, not_empty=False)
             )
             password_confirmation = All(
                 v.ValidPassword(),
-                v.UnicodeString(strip=False, min=6, not_empty=False),
+                v.UnicodeString(strip=False, min=6, max=72, not_empty=False),
             )
             admin = v.StringBoolean(if_missing=False)
         else:
             password = All(
                 v.ValidPassword(),
-                v.UnicodeString(strip=False, min=6, not_empty=True)
+                v.UnicodeString(strip=False, min=6, max=72, not_empty=True)
             )
             password_confirmation = All(
                 v.ValidPassword(),
-                v.UnicodeString(strip=False, min=6, not_empty=False)
+                v.UnicodeString(strip=False, min=6, max=72, not_empty=False)
             )
 
         password_change = v.StringBoolean(if_missing=False)
         create_repo_group = v.StringBoolean(if_missing=False)
 
         active = v.StringBoolean(if_missing=False)
         firstname = v.UnicodeString(strip=True, min=1, not_empty=False)
         lastname = v.UnicodeString(strip=True, min=1, not_empty=False)
         email = All(v.Email(not_empty=True), v.UniqSystemEmail(old_data))
         extern_name = v.UnicodeString(strip=True)
         extern_type = v.UnicodeString(strip=True)
         language = v.OneOf(available_languages, hideList=False,
                            testValueList=True, if_missing=None)
         chained_validators = [v.ValidPasswordsMatch()]
     return _UserForm
 
 
 def UserGroupForm(edit=False, old_data=None, allow_disabled=False):
     old_data = old_data or {}
 
     class _UserGroupForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
 
         users_group_name = All(
             v.UnicodeString(strip=True, min=1, not_empty=True),
             v.ValidUserGroup(edit, old_data)
         )
         user_group_description = v.UnicodeString(strip=True, min=1,
                                                  not_empty=False)
 
         users_group_active = v.StringBoolean(if_missing=False)
 
         if edit:
             # this is user group owner
             user = All(
                 v.UnicodeString(not_empty=True),
                 v.ValidRepoUser(allow_disabled))
     return _UserGroupForm
 
 
 def RepoGroupForm(edit=False, old_data=None, available_groups=None,
                    can_create_in_root=False, allow_disabled=False):
     old_data = old_data or {}
     available_groups = available_groups or []
 
     class _RepoGroupForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
 
         group_name = All(v.UnicodeString(strip=True, min=1, not_empty=True),
                          v.SlugifyName(),)
         group_description = v.UnicodeString(strip=True, min=1,
                                             not_empty=False)
         group_copy_permissions = v.StringBoolean(if_missing=False)
 
         group_parent_id = v.OneOf(available_groups, hideList=False,
                                   testValueList=True, not_empty=True)
         enable_locking = v.StringBoolean(if_missing=False)
         chained_validators = [
             v.ValidRepoGroup(edit, old_data, can_create_in_root)]
 
         if edit:
             # this is repo group owner
             user = All(
                 v.UnicodeString(not_empty=True),
                 v.ValidRepoUser(allow_disabled))
 
     return _RepoGroupForm
 
 
 def RegisterForm(edit=False, old_data={}):
     class _RegisterForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
         username = All(
             v.ValidUsername(edit, old_data),
             v.UnicodeString(strip=True, min=1, not_empty=True)
         )
         password = All(
             v.ValidPassword(),
-            v.UnicodeString(strip=False, min=6, not_empty=True)
+            v.UnicodeString(strip=False, min=6, max=72, not_empty=True)
         )
         password_confirmation = All(
             v.ValidPassword(),
-            v.UnicodeString(strip=False, min=6, not_empty=True)
+            v.UnicodeString(strip=False, min=6, max=72, not_empty=True)
         )
         active = v.StringBoolean(if_missing=False)
         firstname = v.UnicodeString(strip=True, min=1, not_empty=False)
         lastname = v.UnicodeString(strip=True, min=1, not_empty=False)
         email = All(v.Email(not_empty=True), v.UniqSystemEmail(old_data))
 
         chained_validators = [v.ValidPasswordsMatch()]
 
     return _RegisterForm
 
 
 def PasswordResetForm():
     class _PasswordResetForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
         email = All(v.ValidSystemEmail(), v.Email(not_empty=True))
     return _PasswordResetForm
 
 
 def RepoForm(edit=False, old_data=None, repo_groups=None, landing_revs=None,
              allow_disabled=False):
     old_data = old_data or {}
     repo_groups = repo_groups or []
     landing_revs = landing_revs or []
     supported_backends = BACKENDS.keys()
 
     class _RepoForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
         repo_name = All(v.UnicodeString(strip=True, min=1, not_empty=True),
                         v.SlugifyName(), v.CannotHaveGitSuffix())
         repo_group = All(v.CanWriteGroup(old_data),
                          v.OneOf(repo_groups, hideList=True))
         repo_type = v.OneOf(supported_backends, required=False,
                             if_missing=old_data.get('repo_type'))
         repo_description = v.UnicodeString(strip=True, min=1, not_empty=False)
         repo_private = v.StringBoolean(if_missing=False)
         repo_landing_rev = v.OneOf(landing_revs, hideList=True)
         repo_copy_permissions = v.StringBoolean(if_missing=False)
         clone_uri = All(v.UnicodeString(strip=True, min=1, not_empty=False))
 
         repo_enable_statistics = v.StringBoolean(if_missing=False)
         repo_enable_downloads = v.StringBoolean(if_missing=False)
         repo_enable_locking = v.StringBoolean(if_missing=False)
 
         if edit:
             # this is repo owner
             user = All(
                 v.UnicodeString(not_empty=True),
                 v.ValidRepoUser(allow_disabled))
             clone_uri_change = v.UnicodeString(
                 not_empty=False, if_missing=v.Missing)
 
         chained_validators = [v.ValidCloneUri(),
                               v.ValidRepoName(edit, old_data)]
     return _RepoForm
 
 
 def RepoPermsForm():
     class _RepoPermsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
         chained_validators = [v.ValidPerms(type_='repo')]
     return _RepoPermsForm
 
 
 def RepoGroupPermsForm(valid_recursive_choices):
     class _RepoGroupPermsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
         recursive = v.OneOf(valid_recursive_choices)
         chained_validators = [v.ValidPerms(type_='repo_group')]
     return _RepoGroupPermsForm
 
 
 def UserGroupPermsForm():
     class _UserPermsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
         chained_validators = [v.ValidPerms(type_='user_group')]
     return _UserPermsForm
 
 
 def RepoFieldForm():
     class _RepoFieldForm(formencode.Schema):
         filter_extra_fields = True
         allow_extra_fields = True
 
         new_field_key = All(v.FieldKey(),
                             v.UnicodeString(strip=True, min=3, not_empty=True))
         new_field_value = v.UnicodeString(not_empty=False, if_missing=u'')
         new_field_type = v.OneOf(['str', 'unicode', 'list', 'tuple'],
                                  if_missing='str')
         new_field_label = v.UnicodeString(not_empty=False)
         new_field_desc = v.UnicodeString(not_empty=False)
 
     return _RepoFieldForm
 
 
 def RepoForkForm(edit=False, old_data={}, supported_backends=BACKENDS.keys(),
                  repo_groups=[], landing_revs=[]):
     class _RepoForkForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
         repo_name = All(v.UnicodeString(strip=True, min=1, not_empty=True),
                         v.SlugifyName())
         repo_group = All(v.CanWriteGroup(),
                          v.OneOf(repo_groups, hideList=True))
         repo_type = All(v.ValidForkType(old_data), v.OneOf(supported_backends))
         description = v.UnicodeString(strip=True, min=1, not_empty=True)
         private = v.StringBoolean(if_missing=False)
         copy_permissions = v.StringBoolean(if_missing=False)
         fork_parent_id = v.UnicodeString()
         chained_validators = [v.ValidForkName(edit, old_data)]
         landing_rev = v.OneOf(landing_revs, hideList=True)
 
     return _RepoForkForm
 
 
 def ApplicationSettingsForm():
     class _ApplicationSettingsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
         rhodecode_title = v.UnicodeString(strip=True, max=40, not_empty=False)
         rhodecode_realm = v.UnicodeString(strip=True, min=1, not_empty=True)
         rhodecode_pre_code = v.UnicodeString(strip=True, min=1, not_empty=False)
         rhodecode_post_code = v.UnicodeString(strip=True, min=1, not_empty=False)
         rhodecode_captcha_public_key = v.UnicodeString(strip=True, min=1, not_empty=False)
         rhodecode_captcha_private_key = v.UnicodeString(strip=True, min=1, not_empty=False)
         rhodecode_create_personal_repo_group = v.StringBoolean(if_missing=False)
         rhodecode_personal_repo_group_pattern = v.UnicodeString(strip=True, min=1, not_empty=False)
 
     return _ApplicationSettingsForm
 
 
 def ApplicationVisualisationForm():
     class _ApplicationVisualisationForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
         rhodecode_show_public_icon = v.StringBoolean(if_missing=False)
         rhodecode_show_private_icon = v.StringBoolean(if_missing=False)
         rhodecode_stylify_metatags = v.StringBoolean(if_missing=False)
 
         rhodecode_repository_fields = v.StringBoolean(if_missing=False)
         rhodecode_lightweight_journal = v.StringBoolean(if_missing=False)
         rhodecode_dashboard_items = v.Int(min=5, not_empty=True)
         rhodecode_admin_grid_items = v.Int(min=5, not_empty=True)
         rhodecode_show_version = v.StringBoolean(if_missing=False)
         rhodecode_use_gravatar = v.StringBoolean(if_missing=False)
         rhodecode_markup_renderer = v.OneOf(['markdown', 'rst'])
         rhodecode_gravatar_url = v.UnicodeString(min=3)
         rhodecode_clone_uri_tmpl = v.UnicodeString(min=3)
         rhodecode_support_url = v.UnicodeString()
         rhodecode_show_revision_number = v.StringBoolean(if_missing=False)
         rhodecode_show_sha_length = v.Int(min=4, not_empty=True)
 
     return _ApplicationVisualisationForm
 
 
 class _BaseVcsSettingsForm(formencode.Schema):
     allow_extra_fields = True
     filter_extra_fields = False
     hooks_changegroup_repo_size = v.StringBoolean(if_missing=False)
     hooks_changegroup_push_logger = v.StringBoolean(if_missing=False)
     hooks_outgoing_pull_logger = v.StringBoolean(if_missing=False)
 
     # PR/Code-review
     rhodecode_pr_merge_enabled = v.StringBoolean(if_missing=False)
     rhodecode_use_outdated_comments = v.StringBoolean(if_missing=False)
 
     # hg
     extensions_largefiles = v.StringBoolean(if_missing=False)
     extensions_evolve = v.StringBoolean(if_missing=False)
     phases_publish = v.StringBoolean(if_missing=False)
     rhodecode_hg_use_rebase_for_merging = v.StringBoolean(if_missing=False)
 
     # git
     vcs_git_lfs_enabled = v.StringBoolean(if_missing=False)
 
     # svn
     vcs_svn_proxy_http_requests_enabled = v.StringBoolean(if_missing=False)
     vcs_svn_proxy_http_server_url = v.UnicodeString(strip=True, if_missing=None)
 
 
 def ApplicationUiSettingsForm():
     class _ApplicationUiSettingsForm(_BaseVcsSettingsForm):
         web_push_ssl = v.StringBoolean(if_missing=False)
         paths_root_path = All(
             v.ValidPath(),
             v.UnicodeString(strip=True, min=1, not_empty=True)
         )
         largefiles_usercache = All(
             v.ValidPath(),
             v.UnicodeString(strip=True, min=2, not_empty=True))
         vcs_git_lfs_store_location = All(
             v.ValidPath(),
             v.UnicodeString(strip=True, min=2, not_empty=True))
         extensions_hgsubversion = v.StringBoolean(if_missing=False)
         extensions_hggit = v.StringBoolean(if_missing=False)
         new_svn_branch = v.ValidSvnPattern(section='vcs_svn_branch')
         new_svn_tag = v.ValidSvnPattern(section='vcs_svn_tag')
 
     return _ApplicationUiSettingsForm
 
 
 def RepoVcsSettingsForm(repo_name):
     class _RepoVcsSettingsForm(_BaseVcsSettingsForm):
         inherit_global_settings = v.StringBoolean(if_missing=False)
         new_svn_branch = v.ValidSvnPattern(
             section='vcs_svn_branch', repo_name=repo_name)
         new_svn_tag = v.ValidSvnPattern(
             section='vcs_svn_tag', repo_name=repo_name)
 
     return _RepoVcsSettingsForm
 
 
 def LabsSettingsForm():
     class _LabSettingsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
 
     return _LabSettingsForm
 
 
 def ApplicationPermissionsForm(
         register_choices, password_reset_choices, extern_activate_choices):
     class _DefaultPermissionsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
 
         anonymous = v.StringBoolean(if_missing=False)
         default_register = v.OneOf(register_choices)
         default_register_message = v.UnicodeString()
         default_password_reset = v.OneOf(password_reset_choices)
         default_extern_activate = v.OneOf(extern_activate_choices)
 
     return _DefaultPermissionsForm
 
 
 def ObjectPermissionsForm(repo_perms_choices, group_perms_choices,
                           user_group_perms_choices):
     class _ObjectPermissionsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
         overwrite_default_repo = v.StringBoolean(if_missing=False)
         overwrite_default_group = v.StringBoolean(if_missing=False)
         overwrite_default_user_group = v.StringBoolean(if_missing=False)
         default_repo_perm = v.OneOf(repo_perms_choices)
         default_group_perm = v.OneOf(group_perms_choices)
         default_user_group_perm = v.OneOf(user_group_perms_choices)
 
     return _ObjectPermissionsForm
 
 
 def UserPermissionsForm(create_choices, create_on_write_choices,
                         repo_group_create_choices, user_group_create_choices,
                         fork_choices, inherit_default_permissions_choices):
     class _DefaultPermissionsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
 
         anonymous = v.StringBoolean(if_missing=False)
 
         default_repo_create = v.OneOf(create_choices)
         default_repo_create_on_write = v.OneOf(create_on_write_choices)
         default_user_group_create = v.OneOf(user_group_create_choices)
         default_repo_group_create = v.OneOf(repo_group_create_choices)
         default_fork_create = v.OneOf(fork_choices)
         default_inherit_default_permissions = v.OneOf(inherit_default_permissions_choices)
 
     return _DefaultPermissionsForm
 
 
 def UserIndividualPermissionsForm():
     class _DefaultPermissionsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
 
         inherit_default_permissions = v.StringBoolean(if_missing=False)
 
     return _DefaultPermissionsForm
 
 
 def DefaultsForm(edit=False, old_data={}, supported_backends=BACKENDS.keys()):
     class _DefaultsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
         default_repo_type = v.OneOf(supported_backends)
         default_repo_private = v.StringBoolean(if_missing=False)
         default_repo_enable_statistics = v.StringBoolean(if_missing=False)
         default_repo_enable_downloads = v.StringBoolean(if_missing=False)
         default_repo_enable_locking = v.StringBoolean(if_missing=False)
 
     return _DefaultsForm
 
 
 def AuthSettingsForm():
     class _AuthSettingsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
         auth_plugins = All(v.ValidAuthPlugins(),
                            v.UniqueListFromString()(not_empty=True))
 
     return _AuthSettingsForm
 
 
 def UserExtraEmailForm():
     class _UserExtraEmailForm(formencode.Schema):
         email = All(v.UniqSystemEmail(), v.Email(not_empty=True))
     return _UserExtraEmailForm
 
 
 def UserExtraIpForm():
     class _UserExtraIpForm(formencode.Schema):
         ip = v.ValidIp()(not_empty=True)
     return _UserExtraIpForm
 
 
 
 def PullRequestForm(repo_id):
     class ReviewerForm(formencode.Schema):
         user_id = v.Int(not_empty=True)
         reasons = All()
         mandatory = v.StringBoolean()
 
     class _PullRequestForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = True
 
         common_ancestor = v.UnicodeString(strip=True, required=True)
         source_repo = v.UnicodeString(strip=True, required=True)
         source_ref = v.UnicodeString(strip=True, required=True)
         target_repo = v.UnicodeString(strip=True, required=True)
         target_ref = v.UnicodeString(strip=True, required=True)
         revisions = All(#v.NotReviewedRevisions(repo_id)(),
                         v.UniqueList()(not_empty=True))
         review_members = formencode.ForEach(ReviewerForm())
         pullrequest_title = v.UnicodeString(strip=True, required=True)
         pullrequest_desc = v.UnicodeString(strip=True, required=False)
 
     return _PullRequestForm
 
 
 def IssueTrackerPatternsForm():
     class _IssueTrackerPatternsForm(formencode.Schema):
         allow_extra_fields = True
         filter_extra_fields = False
         chained_validators = [v.ValidPattern()]
     return _IssueTrackerPatternsForm