1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
# Copyright (c) 2011 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import logging
from swift.common.constraints import check_utf8, check_metadata
from webob.exc import HTTPBadRequest, HTTPLengthRequired, \
HTTPRequestEntityTooLarge
#: Max file size allowed for objects
MAX_FILE_SIZE = 0xffffffffffffffff
#: Max length of the name of a key for metadata
MAX_META_NAME_LENGTH = 128
#: Max length of the value of a key for metadata
MAX_META_VALUE_LENGTH = 256
#: Max number of metadata items
MAX_META_COUNT = 90
#: Max overall size of metadata
MAX_META_OVERALL_SIZE = 4096
#: Max object name length
MAX_OBJECT_NAME_LENGTH = 255
#: Max object list length of a get request for a container
CONTAINER_LISTING_LIMIT = 10000
#: Max container list length of a get request for an account
ACCOUNT_LISTING_LIMIT = 10000
MAX_ACCOUNT_NAME_LENGTH = 255
MAX_CONTAINER_NAME_LENGTH = 255
def validate_obj_name(obj):
if len(obj) > MAX_OBJECT_NAME_LENGTH:
logging.error('Object name too long %s' % obj)
return False
if obj == '.' or obj == '..':
logging.error('Object name cannot be . or .. %s' % obj)
return False
return True
def check_object_creation(req, object_name):
"""
Check to ensure that everything is alright about an object to be created.
:param req: HTTP request object
:param object_name: name of object to be created
:raises HTTPRequestEntityTooLarge: the object is too large
:raises HTTPLengthRequered: missing content-length header and not
a chunked request
:raises HTTPBadRequest: missing or bad content-type header, or
bad metadata
"""
if req.content_length and req.content_length > MAX_FILE_SIZE:
return HTTPRequestEntityTooLarge(body='Your request is too large.',
request=req, content_type='text/plain')
if req.content_length is None and \
req.headers.get('transfer-encoding') != 'chunked':
return HTTPLengthRequired(request=req)
if 'X-Copy-From' in req.headers and req.content_length:
return HTTPBadRequest(body='Copy requests require a zero byte body',
request=req, content_type='text/plain')
for obj in object_name.split('/'):
if not validate_obj_name(obj):
return HTTPBadRequest(body='Invalid object name %s' %
(obj), request=req,
content_type='text/plain')
if 'Content-Type' not in req.headers:
return HTTPBadRequest(request=req, content_type='text/plain',
body='No content type')
if not check_utf8(req.headers['Content-Type']):
return HTTPBadRequest(request=req, body='Invalid Content-Type',
content_type='text/plain')
if 'x-object-manifest' in req.headers:
value = req.headers['x-object-manifest']
container = prefix = None
try:
container, prefix = value.split('/', 1)
except ValueError:
pass
if not container or not prefix or '?' in value or '&' in value or \
prefix[0] == '/':
return HTTPBadRequest(request=req,
body='X-Object-Manifest must in the format container/prefix')
return check_metadata(req, 'object')
|
