359 lines
13 KiB
Python
359 lines
13 KiB
Python
# -*- coding: utf-8 -*-
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# Part of Odoo, Flectra. See LICENSE file for full copyright and licensing details.
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import datetime
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import logging
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import string
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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 flectra import api, models, _
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from flectra.tools.misc import ustr
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from flectra.exceptions import ValidationError
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_eu_country_vat = {
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'GR': 'EL'
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}
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_eu_country_vat_inverse = {v: k for k, v in _eu_country_vat.items()}
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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': 'ABC123456T1B',
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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': 'SK0012345675',
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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 ResPartner(models.Model):
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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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@api.model
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def simple_vat_check(self, country_code, vat_number):
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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 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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country_code = _eu_country_vat_inverse.get(country_code, country_code)
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return bool(self.env['res.country'].search([('code', '=ilike', country_code)]))
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return check_func(vat_number)
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@api.model
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def vies_vat_check(self, country_code, vat_number):
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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(country_code, vat_number)
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@api.model
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def fix_eu_vat_number(self, country_id, vat):
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europe = self.env.ref('base.europe')
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country = self.env["res.country"].browse(country_id)
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if not europe:
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europe = self.env["res.country.group"].search([('name', '=', 'Europe')], limit=1)
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if europe and country and country.id in europe.country_ids.ids:
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vat = re.sub('[^A-Za-z0-9]', '', vat).upper()
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country_code = _eu_country_vat.get(country.code, country.code).upper()
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if vat[:2] != country_code:
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vat = country_code + vat
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return vat
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@api.constrains('vat', 'commercial_partner_country_id')
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def check_vat(self):
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if self.env.context.get('company_id'):
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company = self.env['res.company'].browse(self.env.context['company_id'])
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else:
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company = self.env.user.company_id
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if 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:
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if not partner.vat:
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continue
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#check with country code as prefix of the TIN
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vat_country, vat_number = self._split_vat(partner.vat)
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if not check_func(vat_country, vat_number):
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#if fails, check with country code from country
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country_code = partner.commercial_partner_id.country_id.code
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if country_code:
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if not check_func(country_code.lower(), partner.vat):
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msg = partner._construct_constraint_msg(country_code.lower())
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raise ValidationError(msg)
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def _construct_constraint_msg(self, country_code):
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self.ensure_one()
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vat_no = "'CC##' (CC=Country Code, ##=VAT Number)"
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vat_no = _ref_vat.get(country_code) or vat_no
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if self.env.context.get('company_id'):
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company = self.env['res.company'].browse(self.env.context['company_id'])
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else:
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company = self.env.user.company_id
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if company.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.') % (self.vat, self.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') % (self.vat, self.name, vat_no)
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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 = [s for s in match.group(1) if s.isdigit()] # 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(br"(?P<primeras>[A-Za-z\xd1\xf1&]{3,4})" \
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br"[ \-_]?" \
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br"(?P<ano>[0-9]{2})(?P<mes>[01][0-9])(?P<dia>[0-3][0-9])" \
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br"[ \-_]?" \
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br"(?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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# Support for MVA suffix contributed by Bringsvor Consulting AS (bringsvor@bringsvor.com)
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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) == 12 and vat.upper().endswith('MVA'):
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vat = vat[:-3] # Strictly speaking we should enforce the suffix MVA but...
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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):
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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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