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74 lines
2.7 KiB
74 lines
2.7 KiB
# Copyright 2020 Creu Blanca
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# Copyright 2020 Ecosoft Co., Ltd.
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# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
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import logging
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from io import BytesIO
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from odoo import _, fields, models
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from odoo.exceptions import ValidationError
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from odoo.tools.safe_eval import safe_eval
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_logger = logging.getLogger(__name__)
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try:
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from PyPDF2 import PdfFileReader, PdfFileWriter
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except ImportError as err:
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_logger.debug(err)
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class IrActionsReport(models.Model):
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_inherit = "ir.actions.report"
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encrypt = fields.Selection(
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[("manual", "Manual Input Password"), ("auto", "Auto Generated Password")],
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string="Encryption",
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help="* Manual Input Password: allow user to key in password on the fly. "
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"This option available only on document print action.\n"
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"* Auto Generated Password: system will auto encrypt password when PDF "
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"created, based on provided python syntax.",
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)
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encrypt_password = fields.Char(
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help="Python code syntax to gnerate password.",
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)
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def _render_qweb_pdf(self, res_ids=None, data=None):
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document, ttype = super(IrActionsReport, self)._render_qweb_pdf(
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res_ids=res_ids, data=data
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)
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password = self._get_pdf_password(res_ids[:1])
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document = self._encrypt_pdf(document, password)
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return document, ttype
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def _get_pdf_password(self, res_id):
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encrypt_password = False
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if self.encrypt == "manual":
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# If use document print action, report_download() is called,
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# but that can't pass context (encrypt_password) here.
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# As such, file will be encrypted by report_download() again.
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# --
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# Following is used just in case when context is passed in.
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encrypt_password = self._context.get("encrypt_password", False)
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elif self.encrypt == "auto" and self.encrypt_password:
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obj = self.env[self.model].browse(res_id)
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try:
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encrypt_password = safe_eval(self.encrypt_password, {"object": obj})
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except Exception:
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raise ValidationError(
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_("Python code used for encryption password is invalid.\n%s")
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% self.encrypt_password
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)
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return encrypt_password
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def _encrypt_pdf(self, data, password):
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if not password:
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return data
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output_pdf = PdfFileWriter()
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in_buff = BytesIO(data)
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pdf = PdfFileReader(in_buff)
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output_pdf.appendPagesFromReader(pdf)
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output_pdf.encrypt(password)
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buff = BytesIO()
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output_pdf.write(buff)
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return buff.getvalue()
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def _get_readable_fields(self):
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return super()._get_readable_fields() | {"encrypt"}
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