363 lines
14 KiB
Python
363 lines
14 KiB
Python
# -*- coding: utf-8 -*-
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##############################################################################
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#
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# OpenERP, Open Source Management Solution
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# Copyright (C) 2004-2012 OpenERP SA (<http://openerp.com>)
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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##############################################################################
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import logging
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import string
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import datetime
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import re
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_logger = logging.getLogger(__name__)
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try:
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import vatnumber
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except ImportError:
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_logger.warning("VAT validation partially unavailable because the `vatnumber` Python library cannot be found. "
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"Install it to support more countries, for example with `easy_install vatnumber`.")
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vatnumber = None
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from openerp.osv import fields, osv
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from openerp.tools.misc import ustr
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from openerp.tools.translate import _
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_ref_vat = {
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'at': 'ATU12345675',
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'be': 'BE0477472701',
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'bg': 'BG1234567892',
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'ch': 'CHE-123.456.788 TVA or CH TVA 123456', #Swiss by Yannick Vaucher @ Camptocamp
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'cy': 'CY12345678F',
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'cz': 'CZ12345679',
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'de': 'DE123456788',
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'dk': 'DK12345674',
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'ee': 'EE123456780',
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'el': 'EL12345670',
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'es': 'ESA12345674',
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'fi': 'FI12345671',
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'fr': 'FR32123456789',
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'gb': 'GB123456782',
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'gr': 'GR12345670',
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'hu': 'HU12345676',
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'hr': 'HR01234567896', # Croatia, contributed by Milan Tribuson
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'ie': 'IE1234567FA',
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'it': 'IT12345670017',
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'lt': 'LT123456715',
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'lu': 'LU12345613',
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'lv': 'LV41234567891',
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'mt': 'MT12345634',
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'mx': 'MXABC123456T1B',
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'nl': 'NL123456782B90',
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'no': 'NO123456785',
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'pe': 'PER10254824220 or PED10254824220',
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'pl': 'PL1234567883',
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'pt': 'PT123456789',
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'ro': 'RO1234567897',
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'se': 'SE123456789701',
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'si': 'SI12345679',
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'sk': 'SK1234567898',
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'tr': 'TR1234567890 (VERGINO) veya TR12345678901 (TCKIMLIKNO)' # Levent Karakas @ Eska Yazilim A.S.
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}
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class res_partner(osv.osv):
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_inherit = 'res.partner'
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def _split_vat(self, vat):
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vat_country, vat_number = vat[:2].lower(), vat[2:].replace(' ', '')
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return vat_country, vat_number
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def simple_vat_check(self, cr, uid, country_code, vat_number, context=None):
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'''
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Check the VAT number depending of the country.
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http://sima-pc.com/nif.php
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'''
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if not ustr(country_code).encode('utf-8').isalpha():
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return False
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check_func_name = 'check_vat_' + country_code
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check_func = getattr(self, check_func_name, None) or \
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getattr(vatnumber, check_func_name, None)
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if not check_func:
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# No VAT validation available, default to check that the country code exists
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if country_code.upper() == 'EU':
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# Foreign companies that trade with non-enterprises in the EU
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# may have a VATIN starting with "EU" instead of a country code.
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return True
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res_country = self.pool.get('res.country')
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return bool(res_country.search(cr, uid, [('code', '=ilike', country_code)], context=context))
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return check_func(vat_number)
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def vies_vat_check(self, cr, uid, country_code, vat_number, context=None):
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try:
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# Validate against VAT Information Exchange System (VIES)
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# see also http://ec.europa.eu/taxation_customs/vies/
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return vatnumber.check_vies(country_code.upper()+vat_number)
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except Exception:
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# see http://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl
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# Fault code may contain INVALID_INPUT, SERVICE_UNAVAILABLE, MS_UNAVAILABLE,
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# TIMEOUT or SERVER_BUSY. There is no way we can validate the input
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# with VIES if any of these arise, including the first one (it means invalid
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# country code or empty VAT number), so we fall back to the simple check.
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return self.simple_vat_check(cr, uid, country_code, vat_number, context=context)
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def button_check_vat(self, cr, uid, ids, context=None):
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if not self.check_vat(cr, uid, ids, context=context):
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msg = self._construct_constraint_msg(cr, uid, ids, context=context)
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raise osv.except_osv(_('Error!'), msg)
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return True
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def check_vat(self, cr, uid, ids, context=None):
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user_company = self.pool.get('res.users').browse(cr, uid, uid).company_id
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if user_company.vat_check_vies:
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# force full VIES online check
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check_func = self.vies_vat_check
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else:
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# quick and partial off-line checksum validation
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check_func = self.simple_vat_check
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for partner in self.browse(cr, uid, ids, context=context):
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if not partner.vat:
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continue
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vat_country, vat_number = self._split_vat(partner.vat)
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if not check_func(cr, uid, vat_country, vat_number, context=context):
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_logger.info(_("Importing VAT Number [%s] is not valid !" % vat_number))
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return False
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return True
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def vat_change(self, cr, uid, ids, value, context=None):
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return {'value': {'vat_subjected': bool(value)}}
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def _commercial_fields(self, cr, uid, context=None):
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return super(res_partner, self)._commercial_fields(cr, uid, context=context) + ['vat_subjected']
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def _construct_constraint_msg(self, cr, uid, ids, context=None):
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def default_vat_check(cn, vn):
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# by default, a VAT number is valid if:
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# it starts with 2 letters
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# has more than 3 characters
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return cn[0] in string.ascii_lowercase and cn[1] in string.ascii_lowercase
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vat_country, vat_number = self._split_vat(self.browse(cr, uid, ids)[0].vat)
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vat_no = "'CC##' (CC=Country Code, ##=VAT Number)"
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error_partner = self.browse(cr, uid, ids, context=context)
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if default_vat_check(vat_country, vat_number):
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vat_no = _ref_vat[vat_country] if vat_country in _ref_vat else vat_no
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if self.pool['res.users'].browse(cr, uid, uid).company_id.vat_check_vies:
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return '\n' + _('The VAT number [%s] for partner [%s] either failed the VIES VAT validation check or did not respect the expected format %s.') % (error_partner[0].vat, error_partner[0].name, vat_no)
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return '\n' + _('The VAT number [%s] for partner [%s] does not seem to be valid. \nNote: the expected format is %s') % (error_partner[0].vat, error_partner[0].name, vat_no)
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_constraints = [(check_vat, _construct_constraint_msg, ["vat"])]
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__check_vat_ch_re1 = re.compile(r'(MWST|TVA|IVA)[0-9]{6}$')
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__check_vat_ch_re2 = re.compile(r'E([0-9]{9}|-[0-9]{3}\.[0-9]{3}\.[0-9]{3})(MWST|TVA|IVA)$')
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def check_vat_ch(self, vat):
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'''
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Check Switzerland VAT number.
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'''
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# VAT number in Switzerland will change between 2011 and 2013
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# http://www.estv.admin.ch/mwst/themen/00154/00589/01107/index.html?lang=fr
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# Old format is "TVA 123456" we will admit the user has to enter ch before the number
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# Format will becomes such as "CHE-999.999.99C TVA"
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# Both old and new format will be accepted till end of 2013
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# Accepted format are: (spaces are ignored)
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# CH TVA ######
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# CH IVA ######
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# CH MWST #######
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#
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# CHE#########MWST
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# CHE#########TVA
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# CHE#########IVA
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# CHE-###.###.### MWST
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# CHE-###.###.### TVA
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# CHE-###.###.### IVA
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#
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if self.__check_vat_ch_re1.match(vat):
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return True
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match = self.__check_vat_ch_re2.match(vat)
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if match:
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# For new TVA numbers, do a mod11 check
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num = filter(lambda s: s.isdigit(), match.group(1)) # get the digits only
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factor = (5,4,3,2,7,6,5,4)
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csum = sum([int(num[i]) * factor[i] for i in range(8)])
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check = (11 - (csum % 11)) % 11
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return check == int(num[8])
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return False
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def _ie_check_char(self, vat):
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vat = vat.zfill(8)
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extra = 0
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if vat[7] not in ' W':
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if vat[7].isalpha():
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extra = 9 * (ord(vat[7]) - 64)
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else:
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# invalid
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return -1
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checksum = extra + sum((8-i) * int(x) for i, x in enumerate(vat[:7]))
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return 'WABCDEFGHIJKLMNOPQRSTUV'[checksum % 23]
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def check_vat_ie(self, vat):
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""" Temporary Ireland VAT validation to support the new format
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introduced in January 2013 in Ireland, until upstream is fixed.
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TODO: remove when fixed upstream"""
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if len(vat) not in (8, 9) or not vat[2:7].isdigit():
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return False
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if len(vat) == 8:
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# Normalize pre-2013 numbers: final space or 'W' not significant
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vat += ' '
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if vat[:7].isdigit():
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return vat[7] == self._ie_check_char(vat[:7] + vat[8])
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elif vat[1] in (string.ascii_uppercase + '+*'):
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# Deprecated format
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# See http://www.revenue.ie/en/online/third-party-reporting/reporting-payment-details/faqs.html#section3
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return vat[7] == self._ie_check_char(vat[2:7] + vat[0] + vat[8])
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return False
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# Mexican VAT verification, contributed by Vauxoo
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# and Panos Christeas <p_christ@hol.gr>
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__check_vat_mx_re = re.compile(r"(?P<primeras>[A-Za-z\xd1\xf1&]{3,4})" \
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r"[ \-_]?" \
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r"(?P<ano>[0-9]{2})(?P<mes>[01][0-9])(?P<dia>[0-3][0-9])" \
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r"[ \-_]?" \
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r"(?P<code>[A-Za-z0-9&\xd1\xf1]{3})$")
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def check_vat_mx(self, vat):
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''' Mexican VAT verification
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Verificar RFC México
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'''
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# we convert to 8-bit encoding, to help the regex parse only bytes
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vat = ustr(vat).encode('iso8859-1')
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m = self.__check_vat_mx_re.match(vat)
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if not m:
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#No valid format
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return False
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try:
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ano = int(m.group('ano'))
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if ano > 30:
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ano = 1900 + ano
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else:
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ano = 2000 + ano
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datetime.date(ano, int(m.group('mes')), int(m.group('dia')))
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except ValueError:
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return False
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#Valid format and valid date
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return True
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# Norway VAT validation, contributed by Rolv Råen (adEgo) <rora@adego.no>
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def check_vat_no(self, vat):
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'''
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Check Norway VAT number.See http://www.brreg.no/english/coordination/number.html
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'''
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if len(vat) != 9:
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return False
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try:
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int(vat)
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except ValueError:
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return False
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sum = (3 * int(vat[0])) + (2 * int(vat[1])) + \
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(7 * int(vat[2])) + (6 * int(vat[3])) + \
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(5 * int(vat[4])) + (4 * int(vat[5])) + \
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(3 * int(vat[6])) + (2 * int(vat[7]))
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check = 11 -(sum % 11)
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if check == 11:
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check = 0
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if check == 10:
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# 10 is not a valid check digit for an organization number
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return False
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return check == int(vat[8])
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# Peruvian VAT validation, contributed by Vauxoo
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def check_vat_pe(self, vat):
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vat_type,vat = vat and len(vat)>=2 and (vat[0], vat[1:]) or (False, False)
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if vat_type and vat_type.upper() == 'D':
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#DNI
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return True
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elif vat_type and vat_type.upper() == 'R':
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#verify RUC
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factor = '5432765432'
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sum = 0
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dig_check = False
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if len(vat) != 11:
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return False
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try:
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int(vat)
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except ValueError:
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return False
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for f in range(0,10):
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sum += int(factor[f]) * int(vat[f])
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subtraction = 11 - (sum % 11)
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if subtraction == 10:
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dig_check = 0
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elif subtraction == 11:
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dig_check = 1
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else:
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dig_check = subtraction
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return int(vat[10]) == dig_check
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else:
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return False
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# VAT validation in Turkey, contributed by # Levent Karakas @ Eska Yazilim A.S.
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def check_vat_tr(self, vat):
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if not (10 <= len(vat) <= 11):
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return False
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try:
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int(vat)
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except ValueError:
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return False
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# check vat number (vergi no)
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if len(vat) == 10:
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sum = 0
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check = 0
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for f in range(0,9):
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c1 = (int(vat[f]) + (9-f)) % 10
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c2 = ( c1 * (2 ** (9-f)) ) % 9
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if (c1 != 0) and (c2 == 0): c2 = 9
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sum += c2
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if sum % 10 == 0:
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check = 0
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else:
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check = 10 - (sum % 10)
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return int(vat[9]) == check
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# check personal id (tc kimlik no)
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if len(vat) == 11:
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c1a = 0
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c1b = 0
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c2 = 0
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for f in range(0,9,2):
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c1a += int(vat[f])
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for f in range(1,9,2):
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c1b += int(vat[f])
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c1 = ( (7 * c1a) - c1b) % 10
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for f in range(0,10):
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c2 += int(vat[f])
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c2 = c2 % 10
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return int(vat[9]) == c1 and int(vat[10]) == c2
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return False
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# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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