QEMU config disk - preserve file timestamp on zip unpack

(cherry picked from commit 5c44268476)

gns3server/compute/qemu/utils/ziputils.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2020 GNS3 Technologies Inc.
+#
+# This program 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 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import time
+import shutil
+import zipfile
+
+def pack_zip(filename, root_dir=None, base_dir=None):
+    """Create a zip archive"""
+
+    if filename[-4:].lower() == ".zip":
+        filename = filename[:-4]
+    shutil.make_archive(filename, 'zip', root_dir, base_dir)
+
+def unpack_zip(filename, extract_dir=None):
+    """Unpack a zip archive"""
+
+    dirs = []
+    if not extract_dir:
+        extract_dir = os.getcwd()
+
+    try:
+        with zipfile.ZipFile(filename, 'r') as zfile:
+            for zinfo in zfile.infolist():
+                fname = os.path.join(extract_dir, zinfo.filename)
+                date_time = time.mktime(zinfo.date_time + (0, 0, -1))
+                zfile.extract(zinfo, extract_dir)
+
+                # update timestamp
+                if zinfo.is_dir():
+                    dirs.append((fname, date_time))
+                else:
+                    os.utime(fname, (date_time, date_time))
+        # update timestamp of directories
+        for fname, date_time in reversed(dirs):
+            os.utime(fname, (date_time, date_time))
+    except zipfile.BadZipFile:
+        raise shutil.ReadError("%s is not a zip file" % filename)