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files.py
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Tue, Nov 5, 09:55

files.py
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# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2013 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
""" Plugin to validate the checksum of a record's files """
from invenio.bibdocfile import BibRecDocs
import os
try:
import magic
if hasattr(magic, "from_file"):
HAS_MAGIC = 1
else:
HAS_MAGIC = 2
magic_object = magic.open(magic.MAGIC_MIME_TYPE)
magic_object.load()
except ImportError:
HAS_MAGIC = 0
def check_record(record):
"""
Validates the checksum of all the BibDocFile's in the record
"""
record_id = record["001"][0][3]
docs = BibRecDocs(record_id).list_bibdocs()
for doc in docs:
for bibfile in doc.list_latest_files():
if not os.path.exists(bibfile.fullpath):
record.set_invalid("File doesn't exists %s" % bibfile.fullpath)
continue
if not bibfile.check():
record.set_invalid("Invalid checksum for file %s" % bibfile.fullpath)
if HAS_MAGIC:
if HAS_MAGIC == 1:
magic_mime = magic.from_file(bibfile.fullpath, mime=True)
else:
magic_mime = magic_object.file(bibfile.fullpath)
if bibfile.mime != magic_mime:
record.set_invalid(
("Guessed mime type from extension (%s) is different" +
"from guessed mime type from headers (%s)") %
(bibfile.mime, magic_mime)
)

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