/usr/lib/python2.7/dist-packages/trytond/ir/attachment.py is in tryton-server 3.0.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#this repository contains the full copyright notices and license terms.
import os
try:
import hashlib
except ImportError:
hashlib = None
import md5
from sql.operators import Concat
from ..model import ModelView, ModelSQL, fields
from ..config import CONFIG
from .. import backend
from ..transaction import Transaction
from ..pyson import Eval
from ..pool import Pool
__all__ = [
'Attachment',
]
def firstline(description):
try:
return (x for x in description.splitlines() if x.strip()).next()
except StopIteration:
return ''
class Attachment(ModelSQL, ModelView):
"Attachment"
__name__ = 'ir.attachment'
name = fields.Char('Name', required=True)
type = fields.Selection([
('data', 'Data'),
('link', 'Link'),
], 'Type', required=True)
data = fields.Function(fields.Binary('Data', filename='name', states={
'invisible': Eval('type') != 'data',
}, depends=['type']), 'get_data', setter='set_data')
description = fields.Text('Description')
summary = fields.Function(fields.Char('Summary',
on_change_with=['description']), 'on_change_with_summary')
resource = fields.Reference('Resource', selection='models_get',
select=True)
link = fields.Char('Link', states={
'invisible': Eval('type') != 'link',
}, depends=['type'])
digest = fields.Char('Digest', size=32)
collision = fields.Integer('Collision')
data_size = fields.Function(fields.Integer('Data size', states={
'invisible': Eval('type') != 'data',
}, depends=['type']), 'get_data')
last_modification = fields.Function(fields.DateTime('Last Modification'),
'get_last_modification')
last_user = fields.Function(fields.Char('Last User'),
'get_last_user')
@classmethod
def __setup__(cls):
super(Attachment, cls).__setup__()
cls._sql_constraints += [
('resource_name', 'UNIQUE(resource, name)',
'The names of attachments must be unique by resource!'),
]
@classmethod
def __register__(cls, module_name):
TableHandler = backend.get('TableHandler')
cursor = Transaction().cursor
super(Attachment, cls).__register__(module_name)
table = TableHandler(cursor, cls, module_name)
attachment = cls.__table__()
# Migration from 1.4 res_model and res_id merged into resource
# Reference
if table.column_exist('res_model') and \
table.column_exist('res_id'):
table.drop_constraint('res_model_res_id_name')
cursor.execute(*attachment.update(
[attachment.resource],
[Concat(Concat(attachment.resource, ','),
attachment.res_id)]))
table.drop_column('res_model')
table.drop_column('res_id')
@staticmethod
def default_type():
return 'data'
@staticmethod
def default_resource():
return Transaction().context.get('resource')
@staticmethod
def default_collision():
return 0
@staticmethod
def models_get():
pool = Pool()
Model = pool.get('ir.model')
ModelAccess = pool.get('ir.model.access')
models = Model.search([])
access = ModelAccess.get_access([m.model for m in models])
res = []
for model in models:
if access[model.model]['read']:
res.append([model.model, model.name])
return res
def get_data(self, name):
db_name = Transaction().cursor.dbname
format_ = Transaction().context.pop('%s.%s'
% (self.__name__, name), '')
value = None
if name == 'data_size' or format_ == 'size':
value = 0
if self.digest:
filename = self.digest
if self.collision:
filename = filename + '-' + str(self.collision)
filename = os.path.join(CONFIG['data_path'], db_name,
filename[0:2], filename[2:4], filename)
if name == 'data_size' or format_ == 'size':
try:
statinfo = os.stat(filename)
value = statinfo.st_size
except OSError:
pass
else:
try:
with open(filename, 'rb') as file_p:
value = buffer(file_p.read())
except IOError:
pass
return value
@classmethod
def set_data(cls, attachments, name, value):
if value is None:
return
cursor = Transaction().cursor
table = cls.__table__()
db_name = cursor.dbname
directory = os.path.join(CONFIG['data_path'], db_name)
if not os.path.isdir(directory):
os.makedirs(directory, 0770)
if hashlib:
digest = hashlib.md5(value).hexdigest()
else:
digest = md5.new(value).hexdigest()
directory = os.path.join(directory, digest[0:2], digest[2:4])
if not os.path.isdir(directory):
os.makedirs(directory, 0770)
filename = os.path.join(directory, digest)
collision = 0
if os.path.isfile(filename):
with open(filename, 'rb') as file_p:
data = file_p.read()
if value != data:
cursor.execute(*table.select(table.collision,
where=(table.digest == digest)
& (table.collision != 0),
group_by=table.collision,
order_by=table.collision))
collision2 = 0
for row in cursor.fetchall():
collision2 = row[0]
filename = os.path.join(directory,
digest + '-' + str(collision2))
if os.path.isfile(filename):
with open(filename, 'rb') as file_p:
data = file_p.read()
if value == data:
collision = collision2
break
if collision == 0:
collision = collision2 + 1
filename = os.path.join(directory,
digest + '-' + str(collision))
with open(filename, 'wb') as file_p:
file_p.write(value)
else:
with open(filename, 'wb') as file_p:
file_p.write(value)
cls.write(attachments, {
'digest': digest,
'collision': collision,
})
def on_change_with_summary(self, name=None):
return firstline(self.description or '')
def get_last_modification(self, name):
return (self.write_date if self.write_date else self.create_date
).replace(microsecond=0)
@classmethod
def get_last_user(cls, attachments, name):
with Transaction().set_user(0):
return dict(
(x.id, x.write_uid.rec_name
if x.write_uid else x.create_uid.rec_name)
for x in cls.browse(attachments))
@classmethod
def check_access(cls, ids, mode='read'):
pool = Pool()
ModelAccess = pool.get('ir.model.access')
if Transaction().user == 0:
return
model_names = set()
with Transaction().set_user(0):
for attachment in cls.browse(ids):
if attachment.resource:
model_names.add(attachment.resource.__name__)
for model_name in model_names:
ModelAccess.check(model_name, mode=mode)
@classmethod
def read(cls, ids, fields_names=None):
cls.check_access(ids, mode='read')
return super(Attachment, cls).read(ids, fields_names=fields_names)
@classmethod
def delete(cls, attachments):
cls.check_access([a.id for a in attachments], mode='delete')
super(Attachment, cls).delete(attachments)
@classmethod
def write(cls, attachments, vals):
cls.check_access([a.id for a in attachments], mode='write')
super(Attachment, cls).write(attachments, vals)
cls.check_access(attachments, mode='write')
@classmethod
def create(cls, vlist):
attachments = super(Attachment, cls).create(vlist)
cls.check_access([a.id for a in attachments], mode='create')
return attachments
@classmethod
def view_header_get(cls, value, view_type='form'):
pool = Pool()
Model = pool.get('ir.model')
value = super(Attachment, cls).view_header_get(value,
view_type=view_type)
resource = Transaction().context.get('resource')
if resource:
model_name, record_id = resource.split(',', 1)
ir_model, = Model.search([('model', '=', model_name)])
Resource = pool.get(model_name)
record = Resource(int(record_id))
value = '%s - %s - %s' % (ir_model.name, record.rec_name, value)
return value
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