1 # -*- coding: utf-8 -*-
2 ##############################################################################
4 # OpenERP, Open Source Management Solution
5 # Copyright (C) 2004-2012 OpenERP SA (<http://openerp.com>)
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation, either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 ##############################################################################
26 _logger = logging.getLogger(__name__)
31 _logger.warning("VAT validation partially unavailable because the `vatnumber` Python library cannot be found. "
32 "Install it to support more countries, for example with `easy_install vatnumber`.")
35 from openerp.osv import fields, osv
36 from openerp.tools.misc import ustr
37 from openerp.tools.translate import _
43 'ch': 'CHE-123.456.788 TVA or CH TVA 123456', #Swiss by Yannick Vaucher @ Camptocamp
52 'fr': 'FR32123456789',
56 'hr': 'HR01234567896', # Croatia, contributed by Milan Tribuson
58 'it': 'IT12345670017',
61 'lv': 'LV41234567891',
63 'mx': 'MXABC123456T1B',
64 'nl': 'NL123456782B90',
66 'pe': 'PER10254824220 or PED10254824220',
70 'se': 'SE123456789701',
75 class res_partner(osv.osv):
76 _inherit = 'res.partner'
78 def _split_vat(self, vat):
79 vat_country, vat_number = vat[:2].lower(), vat[2:].replace(' ', '')
80 return vat_country, vat_number
82 def simple_vat_check(self, cr, uid, country_code, vat_number, context=None):
84 Check the VAT number depending of the country.
85 http://sima-pc.com/nif.php
87 if not ustr(country_code).encode('utf-8').isalpha():
89 check_func_name = 'check_vat_' + country_code
90 check_func = getattr(self, check_func_name, None) or \
91 getattr(vatnumber, check_func_name, None)
93 # No VAT validation available, default to check that the country code exists
94 res_country = self.pool.get('res.country')
95 return bool(res_country.search(cr, uid, [('code', '=ilike', country_code)], context=context))
96 return check_func(vat_number)
98 def vies_vat_check(self, cr, uid, country_code, vat_number, context=None):
100 # Validate against VAT Information Exchange System (VIES)
101 # see also http://ec.europa.eu/taxation_customs/vies/
102 return vatnumber.check_vies(country_code.upper()+vat_number)
104 # see http://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl
105 # Fault code may contain INVALID_INPUT, SERVICE_UNAVAILABLE, MS_UNAVAILABLE,
106 # TIMEOUT or SERVER_BUSY. There is no way we can validate the input
107 # with VIES if any of these arise, including the first one (it means invalid
108 # country code or empty VAT number), so we fall back to the simple check.
109 return self.simple_vat_check(cr, uid, country_code, vat_number, context=context)
111 def button_check_vat(self, cr, uid, ids, context=None):
112 if not self.check_vat(cr, uid, ids, context=context):
113 msg = self._construct_constraint_msg(cr, uid, ids, context=context)
114 raise osv.except_osv(_('Error!'), msg)
117 def check_vat(self, cr, uid, ids, context=None):
118 user_company = self.pool.get('res.users').browse(cr, uid, uid).company_id
119 if user_company.vat_check_vies:
120 # force full VIES online check
121 check_func = self.vies_vat_check
123 # quick and partial off-line checksum validation
124 check_func = self.simple_vat_check
125 for partner in self.browse(cr, uid, ids, context=context):
128 vat_country, vat_number = self._split_vat(partner.vat)
129 if not check_func(cr, uid, vat_country, vat_number, context=context):
130 _logger.info(_("Importing VAT Number [%s] is not valid !" % vat_number))
134 def vat_change(self, cr, uid, ids, value, context=None):
135 return {'value': {'vat_subjected': bool(value)}}
137 def _commercial_fields(self, cr, uid, context=None):
138 return super(res_partner, self)._commercial_fields(cr, uid, context=context) + ['vat_subjected']
140 def _construct_constraint_msg(self, cr, uid, ids, context=None):
141 def default_vat_check(cn, vn):
142 # by default, a VAT number is valid if:
143 # it starts with 2 letters
144 # has more than 3 characters
145 return cn[0] in string.ascii_lowercase and cn[1] in string.ascii_lowercase
146 vat_country, vat_number = self._split_vat(self.browse(cr, uid, ids)[0].vat)
147 vat_no = "'CC##' (CC=Country Code, ##=VAT Number)"
148 error_partner = self.browse(cr, uid, ids, context=context)
149 if default_vat_check(vat_country, vat_number):
150 vat_no = _ref_vat[vat_country] if vat_country in _ref_vat else vat_no
151 if self.pool['res.users'].browse(cr, uid, uid).company_id.vat_check_vies:
152 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)
153 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)
155 _constraints = [(check_vat, _construct_constraint_msg, ["vat"])]
158 __check_vat_ch_re1 = re.compile(r'(MWST|TVA|IVA)[0-9]{6}$')
159 __check_vat_ch_re2 = re.compile(r'E([0-9]{9}|-[0-9]{3}\.[0-9]{3}\.[0-9]{3})(MWST|TVA|IVA)$')
161 def check_vat_ch(self, vat):
163 Check Switzerland VAT number.
165 # VAT number in Switzerland will change between 2011 and 2013
166 # http://www.estv.admin.ch/mwst/themen/00154/00589/01107/index.html?lang=fr
167 # Old format is "TVA 123456" we will admit the user has to enter ch before the number
168 # Format will becomes such as "CHE-999.999.99C TVA"
169 # Both old and new format will be accepted till end of 2013
170 # Accepted format are: (spaces are ignored)
178 # CHE-###.###.### MWST
179 # CHE-###.###.### TVA
180 # CHE-###.###.### IVA
182 if self.__check_vat_ch_re1.match(vat):
184 match = self.__check_vat_ch_re2.match(vat)
186 # For new TVA numbers, do a mod11 check
187 num = filter(lambda s: s.isdigit(), match.group(1)) # get the digits only
188 factor = (5,4,3,2,7,6,5,4)
189 csum = sum([int(num[i]) * factor[i] for i in range(8)])
190 check = (11 - (csum % 11)) % 11
191 return check == int(num[8])
194 def _ie_check_char(self, vat):
197 if vat[7] not in ' W':
199 extra = 9 * (ord(vat[7]) - 64)
203 checksum = extra + sum((8-i) * int(x) for i, x in enumerate(vat[:7]))
204 return 'WABCDEFGHIJKLMNOPQRSTUV'[checksum % 23]
206 def check_vat_ie(self, vat):
207 """ Temporary Ireland VAT validation to support the new format
208 introduced in January 2013 in Ireland, until upstream is fixed.
209 TODO: remove when fixed upstream"""
210 if len(vat) not in (8, 9) or not vat[2:7].isdigit():
213 # Normalize pre-2013 numbers: final space or 'W' not significant
215 if vat[:7].isdigit():
216 return vat[7] == self._ie_check_char(vat[:7] + vat[8])
217 elif vat[1] in (string.ascii_uppercase + '+*'):
219 # See http://www.revenue.ie/en/online/third-party-reporting/reporting-payment-details/faqs.html#section3
220 return vat[7] == self._ie_check_char(vat[2:7] + vat[0] + vat[8])
223 # Mexican VAT verification, contributed by Vauxoo
224 # and Panos Christeas <p_christ@hol.gr>
225 __check_vat_mx_re = re.compile(r"(?P<primeras>[A-Za-z\xd1\xf1&]{3,4})" \
227 r"(?P<ano>[0-9]{2})(?P<mes>[01][0-9])(?P<dia>[0-3][0-9])" \
229 r"(?P<code>[A-Za-z0-9&\xd1\xf1]{3})$")
230 def check_vat_mx(self, vat):
231 ''' Mexican VAT verification
235 # we convert to 8-bit encoding, to help the regex parse only bytes
236 vat = ustr(vat).encode('iso8859-1')
237 m = self.__check_vat_mx_re.match(vat)
242 ano = int(m.group('ano'))
247 datetime.date(ano, int(m.group('mes')), int(m.group('dia')))
251 #Valid format and valid date
255 # Norway VAT validation, contributed by Rolv Råen (adEgo) <rora@adego.no>
256 def check_vat_no(self, vat):
258 Check Norway VAT number.See http://www.brreg.no/english/coordination/number.html
267 sum = (3 * int(vat[0])) + (2 * int(vat[1])) + \
268 (7 * int(vat[2])) + (6 * int(vat[3])) + \
269 (5 * int(vat[4])) + (4 * int(vat[5])) + \
270 (3 * int(vat[6])) + (2 * int(vat[7]))
272 check = 11 -(sum % 11)
276 # 10 is not a valid check digit for an organization number
278 return check == int(vat[8])
280 # Peruvian VAT validation, contributed by Vauxoo
281 def check_vat_pe(self, vat):
283 vat_type,vat = vat and len(vat)>=2 and (vat[0], vat[1:]) or (False, False)
285 if vat_type and vat_type.upper() == 'D':
288 elif vat_type and vat_type.upper() == 'R':
290 factor = '5432765432'
300 for f in range(0,10):
301 sum += int(factor[f]) * int(vat[f])
303 subtraction = 11 - (sum % 11)
304 if subtraction == 10:
306 elif subtraction == 11:
309 dig_check = subtraction
311 return int(vat[10]) == dig_check
315 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: