mirror of
https://github.com/GNS3/gns3-gui.git
synced 2026-05-17 08:56:06 +03:00
113 lines
4.6 KiB
Python
113 lines
4.6 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2015 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import logging
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log = logging.getLogger(__name__)
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from .image import Image
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from ..controller import Controller
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from ..qt import QtCore
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class RegistryError(Exception):
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pass
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class Registry(QtCore.QObject):
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image_list_changed_signal = QtCore.Signal()
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def __init__(self, images_dirs):
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"""
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:param images_dirs: Local image image dir
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"""
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super().__init__()
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self._images_dirs = images_dirs
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self._remote_images = []
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def appendImageDirectory(self, image_directory):
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"""
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Add a folder to the list of we need to scan
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:param image_directory: Folder we need to add
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"""
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self._images_dirs.append(image_directory)
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def getRemoteImageList(self, emulator, compute_id):
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self._emulator = emulator
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Controller.instance().getCompute("/{}/images".format(emulator), compute_id, self._getRemoteListCallback, progressText="Listing remote images...")
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def _getRemoteListCallback(self, result, error=False, **kwargs):
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if error:
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if "message" in result:
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log.error("Error while getting the list of remote images: {}".format(result["message"]))
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return
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self._remote_images = []
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for res in result:
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image = Image(self._emulator, res["path"])
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image.location = "remote"
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image.md5sum = res.get("md5sum")
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image.filesize = res.get("filesize")
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self._remote_images.append(image)
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self.image_list_changed_signal.emit()
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def search_image_file(self, emulator, filename, md5sum, size, strict_md5_check=True):
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"""
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Search an image based on its MD5 checksum
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:param emulator: Emulator type
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:param filename: Image filename (used for ova in order to return the correct file in the archive)
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:param md5sum: Hash of the image
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:param size: File size
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:param strict_md5_check: If `True` then performs MD5 checksum checks, otherwise ignores them
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:returns: Image object or None
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"""
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for remote_image in list(self._remote_images):
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if remote_image.md5sum == md5sum:
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return remote_image
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elif md5sum is None or strict_md5_check is False: # We create a new version or allow custom files
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if filename == remote_image.filename:
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return remote_image
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for directory in self._images_dirs:
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log.debug("Search image {} (MD5={} SIZE={}) in '{}'".format(filename, md5sum, size, directory))
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if os.path.exists(directory):
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try:
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for file in os.listdir(directory):
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if not file.endswith(".md5sum") and not file.startswith("."):
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path = os.path.join(directory, file)
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if os.path.isfile(path):
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if md5sum is None or strict_md5_check is False:
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if filename == os.path.basename(path):
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return Image(emulator, path)
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else:
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# We take all the file with almost the size of the image
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# Almost to avoid round issue with system.
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file_size = os.stat(path).st_size
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if size is None or (file_size - 10 < size and file_size + 10 > size):
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image = Image(emulator, path)
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if image.md5sum == md5sum:
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log.debug("Found image {} (MD5={}) in {}".format(filename, md5sum, image.path))
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return image
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except (OSError, PermissionError) as e:
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log.error("Cannot scan {}: {}".format(path, e))
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return None
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