|
|
# -*- coding: utf-8 -*-
|
|
|
|
|
|
# Copyright (C) 2016-2019 RhodeCode GmbH
|
|
|
#
|
|
|
# This program is free software: you can redistribute it and/or modify
|
|
|
# it under the terms of the GNU Affero General Public License, version 3
|
|
|
# (only), as published by the Free Software Foundation.
|
|
|
#
|
|
|
# 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 Affero General Public License
|
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
#
|
|
|
# This program is dual-licensed. If you wish to learn more about the
|
|
|
# RhodeCode Enterprise Edition, including its added features, Support services,
|
|
|
# and proprietary license terms, please see https://rhodecode.com/licenses/
|
|
|
|
|
|
import os
|
|
|
import time
|
|
|
import shutil
|
|
|
import hashlib
|
|
|
|
|
|
from rhodecode.lib.ext_json import json
|
|
|
from rhodecode.apps.file_store import utils
|
|
|
from rhodecode.apps.file_store.extensions import resolve_extensions
|
|
|
from rhodecode.apps.file_store.exceptions import FileNotAllowedException
|
|
|
|
|
|
METADATA_VER = 'v1'
|
|
|
|
|
|
|
|
|
class LocalFileStorage(object):
|
|
|
|
|
|
@classmethod
|
|
|
def resolve_name(cls, name, directory):
|
|
|
"""
|
|
|
Resolves a unique name and the correct path. If a filename
|
|
|
for that path already exists then a numeric prefix with values > 0 will be
|
|
|
added, for example test.jpg -> 1-test.jpg etc. initially file would have 0 prefix.
|
|
|
|
|
|
:param name: base name of file
|
|
|
:param directory: absolute directory path
|
|
|
"""
|
|
|
|
|
|
counter = 0
|
|
|
while True:
|
|
|
name = '%d-%s' % (counter, name)
|
|
|
|
|
|
# sub_store prefix to optimize disk usage, e.g some_path/ab/final_file
|
|
|
sub_store = cls._sub_store_from_filename(name)
|
|
|
sub_store_path = os.path.join(directory, sub_store)
|
|
|
if not os.path.exists(sub_store_path):
|
|
|
os.makedirs(sub_store_path)
|
|
|
|
|
|
path = os.path.join(sub_store_path, name)
|
|
|
if not os.path.exists(path):
|
|
|
return name, path
|
|
|
counter += 1
|
|
|
|
|
|
@classmethod
|
|
|
def _sub_store_from_filename(cls, filename):
|
|
|
return filename[:2]
|
|
|
|
|
|
@classmethod
|
|
|
def calculate_path_hash(cls, file_path):
|
|
|
"""
|
|
|
Efficient calculation of file_path sha256 sum
|
|
|
|
|
|
:param file_path:
|
|
|
:return: sha256sum
|
|
|
"""
|
|
|
digest = hashlib.sha256()
|
|
|
with open(file_path, 'rb') as f:
|
|
|
for chunk in iter(lambda: f.read(1024 * 100), b""):
|
|
|
digest.update(chunk)
|
|
|
|
|
|
return digest.hexdigest()
|
|
|
|
|
|
def __init__(self, base_path, extension_groups=None):
|
|
|
|
|
|
"""
|
|
|
Local file storage
|
|
|
|
|
|
:param base_path: the absolute base path where uploads are stored
|
|
|
:param extension_groups: extensions string
|
|
|
"""
|
|
|
|
|
|
extension_groups = extension_groups or ['any']
|
|
|
self.base_path = base_path
|
|
|
self.extensions = resolve_extensions([], groups=extension_groups)
|
|
|
|
|
|
def store_path(self, filename):
|
|
|
"""
|
|
|
Returns absolute file path of the filename, joined to the
|
|
|
base_path.
|
|
|
|
|
|
:param filename: base name of file
|
|
|
"""
|
|
|
sub_store = self._sub_store_from_filename(filename)
|
|
|
return os.path.join(self.base_path, sub_store, filename)
|
|
|
|
|
|
def delete(self, filename):
|
|
|
"""
|
|
|
Deletes the filename. Filename is resolved with the
|
|
|
absolute path based on base_path. If file does not exist,
|
|
|
returns **False**, otherwise **True**
|
|
|
|
|
|
:param filename: base name of file
|
|
|
"""
|
|
|
if self.exists(filename):
|
|
|
os.remove(self.store_path(filename))
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
def exists(self, filename):
|
|
|
"""
|
|
|
Checks if file exists. Resolves filename's absolute
|
|
|
path based on base_path.
|
|
|
|
|
|
:param filename: base name of file
|
|
|
"""
|
|
|
return os.path.exists(self.store_path(filename))
|
|
|
|
|
|
def filename_allowed(self, filename, extensions=None):
|
|
|
"""Checks if a filename has an allowed extension
|
|
|
|
|
|
:param filename: base name of file
|
|
|
:param extensions: iterable of extensions (or self.extensions)
|
|
|
"""
|
|
|
_, ext = os.path.splitext(filename)
|
|
|
return self.extension_allowed(ext, extensions)
|
|
|
|
|
|
def extension_allowed(self, ext, extensions=None):
|
|
|
"""
|
|
|
Checks if an extension is permitted. Both e.g. ".jpg" and
|
|
|
"jpg" can be passed in. Extension lookup is case-insensitive.
|
|
|
|
|
|
:param ext: extension to check
|
|
|
:param extensions: iterable of extensions to validate against (or self.extensions)
|
|
|
"""
|
|
|
|
|
|
extensions = extensions or self.extensions
|
|
|
if not extensions:
|
|
|
return True
|
|
|
if ext.startswith('.'):
|
|
|
ext = ext[1:]
|
|
|
return ext.lower() in extensions
|
|
|
|
|
|
def save_file(self, file_obj, filename, directory=None, extensions=None,
|
|
|
extra_metadata=None, **kwargs):
|
|
|
"""
|
|
|
Saves a file object to the uploads location.
|
|
|
Returns the resolved filename, i.e. the directory +
|
|
|
the (randomized/incremented) base name.
|
|
|
|
|
|
:param file_obj: **cgi.FieldStorage** object (or similar)
|
|
|
:param filename: original filename
|
|
|
:param directory: relative path of sub-directory
|
|
|
:param extensions: iterable of allowed extensions, if not default
|
|
|
:param extra_metadata: extra JSON metadata to store next to the file with .meta suffix
|
|
|
"""
|
|
|
|
|
|
extensions = extensions or self.extensions
|
|
|
|
|
|
if not self.filename_allowed(filename, extensions):
|
|
|
raise FileNotAllowedException()
|
|
|
|
|
|
if directory:
|
|
|
dest_directory = os.path.join(self.base_path, directory)
|
|
|
else:
|
|
|
dest_directory = self.base_path
|
|
|
|
|
|
if not os.path.exists(dest_directory):
|
|
|
os.makedirs(dest_directory)
|
|
|
|
|
|
filename = utils.uid_filename(filename)
|
|
|
|
|
|
# resolve also produces special sub-dir for file optimized store
|
|
|
filename, path = self.resolve_name(filename, dest_directory)
|
|
|
stored_file_dir = os.path.dirname(path)
|
|
|
|
|
|
file_obj.seek(0)
|
|
|
|
|
|
with open(path, "wb") as dest:
|
|
|
shutil.copyfileobj(file_obj, dest)
|
|
|
|
|
|
metadata = {}
|
|
|
if extra_metadata:
|
|
|
metadata = extra_metadata
|
|
|
|
|
|
size = os.stat(path).st_size
|
|
|
file_hash = self.calculate_path_hash(path)
|
|
|
|
|
|
metadata.update(
|
|
|
{"filename": filename,
|
|
|
"size": size,
|
|
|
"time": time.time(),
|
|
|
"sha256": file_hash,
|
|
|
"meta_ver": METADATA_VER})
|
|
|
|
|
|
filename_meta = filename + '.meta'
|
|
|
with open(os.path.join(stored_file_dir, filename_meta), "wb") as dest_meta:
|
|
|
dest_meta.write(json.dumps(metadata))
|
|
|
|
|
|
if directory:
|
|
|
filename = os.path.join(directory, filename)
|
|
|
|
|
|
return filename, metadata
|
|
|
|
|
|
def get_metadata(self, filename):
|
|
|
"""
|
|
|
Reads JSON stored metadata for a file
|
|
|
|
|
|
:param filename:
|
|
|
:return:
|
|
|
"""
|
|
|
filename = self.store_path(filename)
|
|
|
filename_meta = filename + '.meta'
|
|
|
|
|
|
with open(filename_meta, "rb") as source_meta:
|
|
|
return json.loads(source_meta.read())
|
|
|
|
