13 multi bank account support (#15)

* [13.0][IMP]add support for multiple bank accounts and multiple EBICS UserIDs over a single EBICS connection

* ebics refactoring fixes

* ebics refactoring fixes

account_ebics/wizards/ebics_change_passphrase.py

@@ -0,0 +1,75 @@
+# Copyright 2009-2020 Noviat.
+# License LGPL-3 or later (http://www.gnu.org/licenses/lpgl).
+
+import logging
+
+from odoo import _, fields, models
+from odoo.exceptions import UserError
+
+_logger = logging.getLogger(__name__)
+
+try:
+    import fintech
+    from fintech.ebics import EbicsKeyRing
+    fintech.cryptolib = 'cryptography'
+except ImportError:
+    _logger.warning('Failed to import fintech')
+
+
+class EbicsChangePassphrase(models.TransientModel):
+    _name = 'ebics.change.passphrase'
+    _description = 'Change EBICS keys passphrase'
+
+    ebics_config_id = fields.Many2one(
+        comodel_name='ebics.config',
+        string='EBICS Configuration',
+        readonly=True)
+    old_pass = fields.Char(
+        string='Old Passphrase',
+        required=True)
+    new_pass = fields.Char(
+        string='New Passphrase',
+        required=True)
+    new_pass_check = fields.Char(
+        string='New Passphrase (verification)',
+        required=True)
+    note = fields.Text(string='Notes', readonly=True)
+
+    def change_passphrase(self):
+        self.ensure_one()
+        if self.old_pass != self.ebics_config_id.ebics_passphrase:
+            raise UserError(_(
+                "Incorrect old passphrase."))
+        if self.new_pass != self.new_pass_check:
+            raise UserError(_(
+                "New passphrase verification error."))
+        if self.new_pass == self.ebics_config_id.ebics_passphrase:
+            raise UserError(_(
+                "New passphrase equal to old passphrase."))
+        try:
+            keyring = EbicsKeyRing(
+                keys=self.ebics_config_id.ebics_keys,
+                passphrase=self.ebics_config_id.ebics_passphrase)
+            keyring.change_passphrase(self.new_pass)
+        except ValueError as e:
+            raise UserError(str(e))
+        self.ebics_config_id.ebics_passphrase = self.new_pass
+        self.note = "The EBICS Passphrase has been changed."
+
+        module = __name__.split('addons.')[1].split('.')[0]
+        result_view = self.env.ref(
+            '%s.ebics_change_passphrase_view_form_result' % module)
+        return {
+            'name': _('EBICS Keys Change Passphrase'),
+            'res_id': self.id,
+            'view_type': 'form',
+            'view_mode': 'form',
+            'res_model': 'ebics.change.passphrase',
+            'view_id': result_view.id,
+            'target': 'new',
+            'type': 'ir.actions.act_window',
+        }
+
+    def button_close(self):
+        self.ensure_one()
+        return {'type': 'ir.actions.act_window_close'}