root / snf-pithos-app / pithos / api / util.py @ 4a105ce2
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1 | 2e662088 | Antony Chazapis | # Copyright 2011-2012 GRNET S.A. All rights reserved.
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2 | 2715ade4 | Sofia Papagiannaki | #
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3 | 5635f9ef | Antony Chazapis | # Redistribution and use in source and binary forms, with or
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4 | 5635f9ef | Antony Chazapis | # without modification, are permitted provided that the following
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5 | 5635f9ef | Antony Chazapis | # conditions are met:
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6 | 2715ade4 | Sofia Papagiannaki | #
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7 | 5635f9ef | Antony Chazapis | # 1. Redistributions of source code must retain the above
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8 | 5635f9ef | Antony Chazapis | # copyright notice, this list of conditions and the following
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9 | 5635f9ef | Antony Chazapis | # disclaimer.
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10 | 2715ade4 | Sofia Papagiannaki | #
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11 | 5635f9ef | Antony Chazapis | # 2. Redistributions in binary form must reproduce the above
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12 | 5635f9ef | Antony Chazapis | # copyright notice, this list of conditions and the following
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13 | 5635f9ef | Antony Chazapis | # disclaimer in the documentation and/or other materials
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14 | 5635f9ef | Antony Chazapis | # provided with the distribution.
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15 | 2715ade4 | Sofia Papagiannaki | #
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16 | 5635f9ef | Antony Chazapis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 5635f9ef | Antony Chazapis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 5635f9ef | Antony Chazapis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 5635f9ef | Antony Chazapis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 5635f9ef | Antony Chazapis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 5635f9ef | Antony Chazapis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 5635f9ef | Antony Chazapis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 5635f9ef | Antony Chazapis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 5635f9ef | Antony Chazapis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 5635f9ef | Antony Chazapis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 5635f9ef | Antony Chazapis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 5635f9ef | Antony Chazapis | # POSSIBILITY OF SUCH DAMAGE.
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28 | 2715ade4 | Sofia Papagiannaki | #
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29 | 5635f9ef | Antony Chazapis | # The views and conclusions contained in the software and
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30 | 5635f9ef | Antony Chazapis | # documentation are those of the authors and should not be
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31 | 5635f9ef | Antony Chazapis | # interpreted as representing official policies, either expressed
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32 | 5635f9ef | Antony Chazapis | # or implied, of GRNET S.A.
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33 | 5635f9ef | Antony Chazapis | |
34 | b956618e | Antony Chazapis | from functools import wraps |
35 | b956618e | Antony Chazapis | from time import time |
36 | b956618e | Antony Chazapis | from traceback import format_exc |
37 | b956618e | Antony Chazapis | from wsgiref.handlers import format_date_time |
38 | 0d4ea090 | Antony Chazapis | from binascii import hexlify, unhexlify |
39 | e11087c2 | Antony Chazapis | from datetime import datetime, tzinfo, timedelta |
40 | 9fefc052 | Antony Chazapis | from urllib import quote, unquote |
41 | b956618e | Antony Chazapis | |
42 | b956618e | Antony Chazapis | from django.conf import settings |
43 | b956618e | Antony Chazapis | from django.http import HttpResponse |
44 | 6b6b6c1e | Antony Chazapis | from django.template.loader import render_to_string |
45 | 1993fea9 | Antony Chazapis | from django.utils import simplejson as json |
46 | 22dab079 | Antony Chazapis | from django.utils.http import http_date, parse_etags |
47 | fb064032 | Antony Chazapis | from django.utils.encoding import smart_unicode, smart_str |
48 | 817890f2 | Antony Chazapis | from django.core.files.uploadhandler import FileUploadHandler |
49 | 817890f2 | Antony Chazapis | from django.core.files.uploadedfile import UploadedFile |
50 | b956618e | Antony Chazapis | |
51 | 6e147ecc | Antony Chazapis | from synnefo.lib.parsedate import parse_http_date_safe, parse_http_date |
52 | dfdf4802 | Sofia Papagiannaki | from synnefo.lib.astakos import get_user |
53 | 5a96180b | Antony Chazapis | |
54 | 2715ade4 | Sofia Papagiannaki | from pithos.api.faults import ( |
55 | 2715ade4 | Sofia Papagiannaki | Fault, NotModified, BadRequest, Unauthorized, Forbidden, ItemNotFound, |
56 | 2715ade4 | Sofia Papagiannaki | Conflict, LengthRequired, PreconditionFailed, RequestEntityTooLarge, |
57 | 2715ade4 | Sofia Papagiannaki | RangeNotSatisfiable, InternalServerError, NotImplemented)
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58 | a7dff008 | Antony Chazapis | from pithos.api.settings import (BACKEND_DB_MODULE, BACKEND_DB_CONNECTION, |
59 | 761c2b3c | root | BACKEND_BLOCK_MODULE, BACKEND_BLOCK_PATH, |
60 | 761c2b3c | root | BACKEND_BLOCK_UMASK, |
61 | f4fbb0fa | Sofia Papagiannaki | BACKEND_QUEUE_MODULE, BACKEND_QUEUE_HOSTS, |
62 | 1f3f907f | Sofia Papagiannaki | BACKEND_QUEUE_EXCHANGE, USE_QUOTAHOLDER, |
63 | 3173699c | Sofia Papagiannaki | QUOTAHOLDER_URL, QUOTAHOLDER_TOKEN, |
64 | b336e6fa | Georgios D. Tsoukalas | QUOTAHOLDER_POOLSIZE, |
65 | 3173699c | Sofia Papagiannaki | BACKEND_QUOTA, BACKEND_VERSIONING, |
66 | b1dadd0e | Sofia Papagiannaki | BACKEND_FREE_VERSIONING, |
67 | 761c2b3c | root | AUTHENTICATION_URL, AUTHENTICATION_USERS, |
68 | 27932481 | Sofia Papagiannaki | COOKIE_NAME, USER_CATALOG_URL, |
69 | 47462eda | Filippos Giannakos | RADOS_STORAGE, RADOS_POOL_BLOCKS, |
70 | 56f3c759 | Sofia Papagiannaki | RADOS_POOL_MAPS, TRANSLATE_UUIDS, |
71 | 4a105ce2 | Sofia Papagiannaki | PUBLIC_URL_SECURITY, |
72 | 56f3c759 | Sofia Papagiannaki | PUBLIC_URL_ALPHABET) |
73 | 39593b2b | Giorgos Verigakis | from pithos.backends import connect_backend |
74 | 32454501 | Sofia Papagiannaki | from pithos.backends.base import (NotAllowedError, QuotaError, ItemNotExists, |
75 | 32454501 | Sofia Papagiannaki | VersionNotExists) |
76 | 890c2065 | Sofia Papagiannaki | from synnefo.lib.astakos import (get_user_uuid, get_displayname, |
77 | 890c2065 | Sofia Papagiannaki | get_uuids, get_displaynames) |
78 | b956618e | Antony Chazapis | |
79 | b956618e | Antony Chazapis | import logging |
80 | 22dab079 | Antony Chazapis | import re |
81 | cbfb6636 | Sofia Papagiannaki | import hashlib |
82 | 7bef5750 | Antony Chazapis | import uuid |
83 | c48acbfd | Sofia Papagiannaki | import decimal |
84 | 8c793655 | Antony Chazapis | |
85 | b956618e | Antony Chazapis | logger = logging.getLogger(__name__) |
86 | b956618e | Antony Chazapis | |
87 | b956618e | Antony Chazapis | |
88 | e11087c2 | Antony Chazapis | class UTC(tzinfo): |
89 | 2715ade4 | Sofia Papagiannaki | def utcoffset(self, dt): |
90 | 2715ade4 | Sofia Papagiannaki | return timedelta(0) |
91 | e11087c2 | Antony Chazapis | |
92 | 2715ade4 | Sofia Papagiannaki | def tzname(self, dt): |
93 | 2715ade4 | Sofia Papagiannaki | return 'UTC' |
94 | e11087c2 | Antony Chazapis | |
95 | 2715ade4 | Sofia Papagiannaki | def dst(self, dt): |
96 | 2715ade4 | Sofia Papagiannaki | return timedelta(0) |
97 | e11087c2 | Antony Chazapis | |
98 | e11087c2 | Antony Chazapis | |
99 | c48acbfd | Sofia Papagiannaki | def json_encode_decimal(obj): |
100 | c48acbfd | Sofia Papagiannaki | if isinstance(obj, decimal.Decimal): |
101 | c48acbfd | Sofia Papagiannaki | return str(obj) |
102 | c48acbfd | Sofia Papagiannaki | raise TypeError(repr(obj) + " is not JSON serializable") |
103 | c48acbfd | Sofia Papagiannaki | |
104 | 2715ade4 | Sofia Papagiannaki | |
105 | e11087c2 | Antony Chazapis | def isoformat(d): |
106 | 2715ade4 | Sofia Papagiannaki | """Return an ISO8601 date string that includes a timezone."""
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107 | 2715ade4 | Sofia Papagiannaki | |
108 | 2715ade4 | Sofia Papagiannaki | return d.replace(tzinfo=UTC()).isoformat()
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109 | e11087c2 | Antony Chazapis | |
110 | e11087c2 | Antony Chazapis | |
111 | 804e8fe7 | Antony Chazapis | def rename_meta_key(d, old, new): |
112 | 804e8fe7 | Antony Chazapis | if old not in d: |
113 | 804e8fe7 | Antony Chazapis | return
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114 | 804e8fe7 | Antony Chazapis | d[new] = d[old] |
115 | 804e8fe7 | Antony Chazapis | del(d[old])
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116 | 804e8fe7 | Antony Chazapis | |
117 | 2715ade4 | Sofia Papagiannaki | |
118 | 02c0c3fa | Antony Chazapis | def printable_header_dict(d): |
119 | b956618e | Antony Chazapis | """Format a meta dictionary for printing out json/xml.
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120 | 2715ade4 | Sofia Papagiannaki |
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121 | 804e8fe7 | Antony Chazapis | Convert all keys to lower case and replace dashes with underscores.
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122 | 804e8fe7 | Antony Chazapis | Format 'last_modified' timestamp.
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123 | b956618e | Antony Chazapis | """
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124 | 2715ade4 | Sofia Papagiannaki | |
125 | 371d907a | Antony Chazapis | if 'last_modified' in d and d['last_modified']: |
126 | 2715ade4 | Sofia Papagiannaki | d['last_modified'] = isoformat(
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127 | 2715ade4 | Sofia Papagiannaki | datetime.fromtimestamp(d['last_modified']))
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128 | b956618e | Antony Chazapis | return dict([(k.lower().replace('-', '_'), v) for k, v in d.iteritems()]) |
129 | b956618e | Antony Chazapis | |
130 | 2715ade4 | Sofia Papagiannaki | |
131 | 02c0c3fa | Antony Chazapis | def format_header_key(k): |
132 | 58a6c894 | Antony Chazapis | """Convert underscores to dashes and capitalize intra-dash strings."""
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133 | b956618e | Antony Chazapis | return '-'.join([x.capitalize() for x in k.replace('_', '-').split('-')]) |
134 | b956618e | Antony Chazapis | |
135 | 2715ade4 | Sofia Papagiannaki | |
136 | 02c0c3fa | Antony Chazapis | def get_header_prefix(request, prefix): |
137 | 02c0c3fa | Antony Chazapis | """Get all prefix-* request headers in a dict. Reformat keys with format_header_key()."""
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138 | 2715ade4 | Sofia Papagiannaki | |
139 | b956618e | Antony Chazapis | prefix = 'HTTP_' + prefix.upper().replace('-', '_') |
140 | 3ab38c43 | Antony Chazapis | # TODO: Document or remove '~' replacing.
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141 | 3ab38c43 | Antony Chazapis | return dict([(format_header_key(k[5:]), v.replace('~', '')) for k, v in request.META.iteritems() if k.startswith(prefix) and len(k) > len(prefix)]) |
142 | 02c0c3fa | Antony Chazapis | |
143 | 2715ade4 | Sofia Papagiannaki | |
144 | 62bf8157 | Antony Chazapis | def check_meta_headers(meta): |
145 | 62bf8157 | Antony Chazapis | if len(meta) > 90: |
146 | 62bf8157 | Antony Chazapis | raise BadRequest('Too many headers.') |
147 | 62bf8157 | Antony Chazapis | for k, v in meta.iteritems(): |
148 | 62bf8157 | Antony Chazapis | if len(k) > 128: |
149 | 62bf8157 | Antony Chazapis | raise BadRequest('Header name too large.') |
150 | 62bf8157 | Antony Chazapis | if len(v) > 256: |
151 | 62bf8157 | Antony Chazapis | raise BadRequest('Header value too large.') |
152 | 62bf8157 | Antony Chazapis | |
153 | 2715ade4 | Sofia Papagiannaki | |
154 | 02c0c3fa | Antony Chazapis | def get_account_headers(request): |
155 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Account-Meta-')
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156 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
157 | 02c0c3fa | Antony Chazapis | groups = {} |
158 | 02c0c3fa | Antony Chazapis | for k, v in get_header_prefix(request, 'X-Account-Group-').iteritems(): |
159 | 02c0c3fa | Antony Chazapis | n = k[16:].lower()
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160 | 02c0c3fa | Antony Chazapis | if '-' in n or '_' in n: |
161 | 02c0c3fa | Antony Chazapis | raise BadRequest('Bad characters in group name') |
162 | 02c0c3fa | Antony Chazapis | groups[n] = v.replace(' ', '').split(',') |
163 | 40d6b76d | Antony Chazapis | while '' in groups[n]: |
164 | 02c0c3fa | Antony Chazapis | groups[n].remove('')
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165 | 02c0c3fa | Antony Chazapis | return meta, groups
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166 | 02c0c3fa | Antony Chazapis | |
167 | 2715ade4 | Sofia Papagiannaki | |
168 | 647a5f48 | Antony Chazapis | def put_account_headers(response, meta, groups, policy): |
169 | f6c97079 | Antony Chazapis | if 'count' in meta: |
170 | f6c97079 | Antony Chazapis | response['X-Account-Container-Count'] = meta['count'] |
171 | f6c97079 | Antony Chazapis | if 'bytes' in meta: |
172 | f6c97079 | Antony Chazapis | response['X-Account-Bytes-Used'] = meta['bytes'] |
173 | d065f612 | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
174 | b956618e | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Account-Meta-')]: |
175 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
176 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
177 | 83dd59c5 | Antony Chazapis | if 'until_timestamp' in meta: |
178 | 2715ade4 | Sofia Papagiannaki | response['X-Account-Until-Timestamp'] = http_date(
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179 | 2715ade4 | Sofia Papagiannaki | int(meta['until_timestamp'])) |
180 | 02c0c3fa | Antony Chazapis | for k, v in groups.iteritems(): |
181 | e7b51248 | Sofia Papagiannaki | k = smart_str(k, strings_only=True)
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182 | e7b51248 | Sofia Papagiannaki | k = format_header_key('X-Account-Group-' + k)
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183 | e7b51248 | Sofia Papagiannaki | v = smart_str(','.join(v), strings_only=True) |
184 | e7b51248 | Sofia Papagiannaki | response[k] = v |
185 | 647a5f48 | Antony Chazapis | for k, v in policy.iteritems(): |
186 | 647a5f48 | Antony Chazapis | response[smart_str(format_header_key('X-Account-Policy-' + k), strings_only=True)] = smart_str(v, strings_only=True) |
187 | 647a5f48 | Antony Chazapis | |
188 | 2715ade4 | Sofia Papagiannaki | |
189 | 02c0c3fa | Antony Chazapis | def get_container_headers(request): |
190 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Container-Meta-')
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191 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
192 | 3ab38c43 | Antony Chazapis | policy = dict([(k[19:].lower(), v.replace(' ', '')) for k, v in get_header_prefix(request, 'X-Container-Policy-').iteritems()]) |
193 | 3ab38c43 | Antony Chazapis | return meta, policy
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194 | b956618e | Antony Chazapis | |
195 | 2715ade4 | Sofia Papagiannaki | |
196 | 39593b2b | Giorgos Verigakis | def put_container_headers(request, response, meta, policy): |
197 | f6c97079 | Antony Chazapis | if 'count' in meta: |
198 | f6c97079 | Antony Chazapis | response['X-Container-Object-Count'] = meta['count'] |
199 | f6c97079 | Antony Chazapis | if 'bytes' in meta: |
200 | f6c97079 | Antony Chazapis | response['X-Container-Bytes-Used'] = meta['bytes'] |
201 | 58a6c894 | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
202 | b956618e | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Container-Meta-')]: |
203 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
204 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
205 | 2715ade4 | Sofia Papagiannaki | l = [smart_str(x, strings_only=True) for x in meta['object_meta'] |
206 | 2715ade4 | Sofia Papagiannaki | if x.startswith('X-Object-Meta-')] |
207 | e7b51248 | Sofia Papagiannaki | response['X-Container-Object-Meta'] = ','.join([x[14:] for x in l]) |
208 | 39593b2b | Giorgos Verigakis | response['X-Container-Block-Size'] = request.backend.block_size
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209 | 39593b2b | Giorgos Verigakis | response['X-Container-Block-Hash'] = request.backend.hash_algorithm
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210 | 83dd59c5 | Antony Chazapis | if 'until_timestamp' in meta: |
211 | 2715ade4 | Sofia Papagiannaki | response['X-Container-Until-Timestamp'] = http_date(
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212 | 2715ade4 | Sofia Papagiannaki | int(meta['until_timestamp'])) |
213 | 3ab38c43 | Antony Chazapis | for k, v in policy.iteritems(): |
214 | e7b51248 | Sofia Papagiannaki | response[smart_str(format_header_key('X-Container-Policy-' + k), strings_only=True)] = smart_str(v, strings_only=True) |
215 | b956618e | Antony Chazapis | |
216 | 2715ade4 | Sofia Papagiannaki | |
217 | 02c0c3fa | Antony Chazapis | def get_object_headers(request): |
218 | 66ce2ca5 | Antony Chazapis | content_type = request.META.get('CONTENT_TYPE', None) |
219 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Object-Meta-')
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220 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
221 | b956618e | Antony Chazapis | if request.META.get('HTTP_CONTENT_ENCODING'): |
222 | b956618e | Antony Chazapis | meta['Content-Encoding'] = request.META['HTTP_CONTENT_ENCODING'] |
223 | 22dab079 | Antony Chazapis | if request.META.get('HTTP_CONTENT_DISPOSITION'): |
224 | 22dab079 | Antony Chazapis | meta['Content-Disposition'] = request.META['HTTP_CONTENT_DISPOSITION'] |
225 | b956618e | Antony Chazapis | if request.META.get('HTTP_X_OBJECT_MANIFEST'): |
226 | b956618e | Antony Chazapis | meta['X-Object-Manifest'] = request.META['HTTP_X_OBJECT_MANIFEST'] |
227 | 66ce2ca5 | Antony Chazapis | return content_type, meta, get_sharing(request), get_public(request)
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228 | b956618e | Antony Chazapis | |
229 | 2715ade4 | Sofia Papagiannaki | |
230 | 469d0997 | Georgios D. Tsoukalas | def put_object_headers(response, meta, restricted=False, token=None): |
231 | 33b4e4a6 | Antony Chazapis | response['ETag'] = meta['checksum'] |
232 | b956618e | Antony Chazapis | response['Content-Length'] = meta['bytes'] |
233 | 66ce2ca5 | Antony Chazapis | response['Content-Type'] = meta.get('type', 'application/octet-stream') |
234 | b956618e | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
235 | 3ab38c43 | Antony Chazapis | if not restricted: |
236 | 4a1c29ea | Antony Chazapis | response['X-Object-Hash'] = meta['hash'] |
237 | 37bee317 | Antony Chazapis | response['X-Object-UUID'] = meta['uuid'] |
238 | 469d0997 | Georgios D. Tsoukalas | if TRANSLATE_UUIDS:
|
239 | 7273ee62 | Sofia Papagiannaki | meta['modified_by'] = retrieve_displayname(token, meta['modified_by']) |
240 | 7273ee62 | Sofia Papagiannaki | response['X-Object-Modified-By'] = smart_str(
|
241 | 7273ee62 | Sofia Papagiannaki | meta['modified_by'], strings_only=True) |
242 | 7bef5750 | Antony Chazapis | response['X-Object-Version'] = meta['version'] |
243 | 2715ade4 | Sofia Papagiannaki | response['X-Object-Version-Timestamp'] = http_date(
|
244 | 2715ade4 | Sofia Papagiannaki | int(meta['version_timestamp'])) |
245 | 7bef5750 | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Object-Meta-')]: |
246 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
247 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
248 | 2715ade4 | Sofia Papagiannaki | for k in ( |
249 | 2715ade4 | Sofia Papagiannaki | 'Content-Encoding', 'Content-Disposition', 'X-Object-Manifest', |
250 | 2715ade4 | Sofia Papagiannaki | 'X-Object-Sharing', 'X-Object-Shared-By', 'X-Object-Allowed-To', |
251 | 2715ade4 | Sofia Papagiannaki | 'X-Object-Public'):
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252 | 7bef5750 | Antony Chazapis | if k in meta: |
253 | e7b51248 | Sofia Papagiannaki | response[k] = smart_str(meta[k], strings_only=True)
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254 | 7bef5750 | Antony Chazapis | else:
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255 | c9af0703 | Antony Chazapis | for k in ('Content-Encoding', 'Content-Disposition'): |
256 | 7bef5750 | Antony Chazapis | if k in meta: |
257 | e8d003e8 | Antony Chazapis | response[k] = smart_str(meta[k], strings_only=True)
|
258 | b956618e | Antony Chazapis | |
259 | 2715ade4 | Sofia Papagiannaki | |
260 | 8cb45c13 | Antony Chazapis | def update_manifest_meta(request, v_account, meta): |
261 | 8cb45c13 | Antony Chazapis | """Update metadata if the object has an X-Object-Manifest."""
|
262 | 2715ade4 | Sofia Papagiannaki | |
263 | 8cb45c13 | Antony Chazapis | if 'X-Object-Manifest' in meta: |
264 | 4a1c29ea | Antony Chazapis | etag = ''
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265 | 8cb45c13 | Antony Chazapis | bytes = 0
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266 | 8cb45c13 | Antony Chazapis | try:
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267 | 2715ade4 | Sofia Papagiannaki | src_container, src_name = split_container_object_string( |
268 | 2715ade4 | Sofia Papagiannaki | '/' + meta['X-Object-Manifest']) |
269 | 2715ade4 | Sofia Papagiannaki | objects = request.backend.list_objects( |
270 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, v_account, |
271 | 2715ade4 | Sofia Papagiannaki | src_container, prefix=src_name, virtual=False)
|
272 | 8cb45c13 | Antony Chazapis | for x in objects: |
273 | 61efb530 | Antony Chazapis | src_meta = request.backend.get_object_meta(request.user_uniq, |
274 | 2715ade4 | Sofia Papagiannaki | v_account, src_container, x[0], 'pithos', x[1]) |
275 | 33b4e4a6 | Antony Chazapis | etag += src_meta['checksum']
|
276 | 8cb45c13 | Antony Chazapis | bytes += src_meta['bytes'] |
277 | 8cb45c13 | Antony Chazapis | except:
|
278 | 8cb45c13 | Antony Chazapis | # Ignore errors.
|
279 | 8cb45c13 | Antony Chazapis | return
|
280 | 8cb45c13 | Antony Chazapis | meta['bytes'] = bytes |
281 | 8cb45c13 | Antony Chazapis | md5 = hashlib.md5() |
282 | 4a1c29ea | Antony Chazapis | md5.update(etag) |
283 | 33b4e4a6 | Antony Chazapis | meta['checksum'] = md5.hexdigest().lower()
|
284 | 8cb45c13 | Antony Chazapis | |
285 | 9839cc96 | root | def is_uuid(str): |
286 | 0325be55 | Sofia Papagiannaki | if str is None: |
287 | 0325be55 | Sofia Papagiannaki | return False |
288 | 9839cc96 | root | try:
|
289 | 9839cc96 | root | uuid.UUID(str)
|
290 | 9839cc96 | root | except ValueError: |
291 | 0325be55 | Sofia Papagiannaki | return False |
292 | 9839cc96 | root | else:
|
293 | 9839cc96 | root | return True |
294 | 2715ade4 | Sofia Papagiannaki | |
295 | 27932481 | Sofia Papagiannaki | ##########################
|
296 | 27932481 | Sofia Papagiannaki | # USER CATALOG utilities #
|
297 | 27932481 | Sofia Papagiannaki | ##########################
|
298 | 27932481 | Sofia Papagiannaki | |
299 | 469d0997 | Georgios D. Tsoukalas | def retrieve_displayname(token, uuid, fail_silently=True): |
300 | 469d0997 | Georgios D. Tsoukalas | displayname = get_displayname( |
301 | 27932481 | Sofia Papagiannaki | token, uuid, USER_CATALOG_URL, AUTHENTICATION_USERS) |
302 | 469d0997 | Georgios D. Tsoukalas | if not displayname and not fail_silently: |
303 | 469d0997 | Georgios D. Tsoukalas | raise ItemNotExists(uuid)
|
304 | 469d0997 | Georgios D. Tsoukalas | elif not displayname: |
305 | 469d0997 | Georgios D. Tsoukalas | # just return the uuid
|
306 | 32454501 | Sofia Papagiannaki | return uuid
|
307 | 469d0997 | Georgios D. Tsoukalas | return displayname
|
308 | 32454501 | Sofia Papagiannaki | |
309 | 469d0997 | Georgios D. Tsoukalas | def retrieve_displaynames(token, uuids, return_dict=False, fail_silently=True): |
310 | 469d0997 | Georgios D. Tsoukalas | catalog = get_displaynames( |
311 | 469d0997 | Georgios D. Tsoukalas | token, uuids, USER_CATALOG_URL, AUTHENTICATION_USERS) or {}
|
312 | 469d0997 | Georgios D. Tsoukalas | missing = list(set(uuids) - set(catalog)) |
313 | 469d0997 | Georgios D. Tsoukalas | if missing and not fail_silently: |
314 | 469d0997 | Georgios D. Tsoukalas | raise ItemNotExists('Unknown displaynames: %s' % ', '.join(missing)) |
315 | 469d0997 | Georgios D. Tsoukalas | return catalog if return_dict else [catalog.get(i) for i in uuids] |
316 | 88dd5c4d | Sofia Papagiannaki | |
317 | 27932481 | Sofia Papagiannaki | def retrieve_uuid(token, displayname): |
318 | 890c2065 | Sofia Papagiannaki | if is_uuid(displayname):
|
319 | 890c2065 | Sofia Papagiannaki | return displayname
|
320 | 890c2065 | Sofia Papagiannaki | |
321 | 890c2065 | Sofia Papagiannaki | uuid = get_user_uuid( |
322 | 27932481 | Sofia Papagiannaki | token, displayname, USER_CATALOG_URL, AUTHENTICATION_USERS) |
323 | 890c2065 | Sofia Papagiannaki | if not uuid: |
324 | 890c2065 | Sofia Papagiannaki | raise ItemNotExists(displayname)
|
325 | 890c2065 | Sofia Papagiannaki | return uuid
|
326 | 890c2065 | Sofia Papagiannaki | |
327 | 469d0997 | Georgios D. Tsoukalas | def retrieve_uuids(token, displaynames, return_dict=False, fail_silently=True): |
328 | 469d0997 | Georgios D. Tsoukalas | catalog = get_uuids( |
329 | 469d0997 | Georgios D. Tsoukalas | token, displaynames, USER_CATALOG_URL, AUTHENTICATION_USERS) or {}
|
330 | 469d0997 | Georgios D. Tsoukalas | missing = list(set(displaynames) - set(catalog)) |
331 | 469d0997 | Georgios D. Tsoukalas | if missing and not fail_silently: |
332 | 469d0997 | Georgios D. Tsoukalas | raise ItemNotExists('Unknown uuids: %s' % ', '.join(missing)) |
333 | 469d0997 | Georgios D. Tsoukalas | return catalog if return_dict else [catalog.get(i) for i in displaynames] |
334 | 890c2065 | Sofia Papagiannaki | |
335 | 27932481 | Sofia Papagiannaki | def replace_permissions_displayname(token, holder): |
336 | 469d0997 | Georgios D. Tsoukalas | if holder == '*': |
337 | 469d0997 | Georgios D. Tsoukalas | return holder
|
338 | 32454501 | Sofia Papagiannaki | try:
|
339 | 32454501 | Sofia Papagiannaki | # check first for a group permission
|
340 | 4a9e3f32 | Sofia Papagiannaki | account, group = holder.split(':', 1) |
341 | 32454501 | Sofia Papagiannaki | except ValueError: |
342 | 469d0997 | Georgios D. Tsoukalas | return retrieve_uuid(token, holder)
|
343 | 32454501 | Sofia Papagiannaki | else:
|
344 | 469d0997 | Georgios D. Tsoukalas | return ':'.join([retrieve_uuid(token, account), group]) |
345 | 32454501 | Sofia Papagiannaki | |
346 | 27932481 | Sofia Papagiannaki | def replace_permissions_uuid(token, holder): |
347 | 469d0997 | Georgios D. Tsoukalas | if holder == '*': |
348 | 469d0997 | Georgios D. Tsoukalas | return holder
|
349 | 32454501 | Sofia Papagiannaki | try:
|
350 | 32454501 | Sofia Papagiannaki | # check first for a group permission
|
351 | 4a9e3f32 | Sofia Papagiannaki | account, group = holder.split(':', 1) |
352 | 32454501 | Sofia Papagiannaki | except ValueError: |
353 | 469d0997 | Georgios D. Tsoukalas | return retrieve_displayname(token, holder)
|
354 | 32454501 | Sofia Papagiannaki | else:
|
355 | 469d0997 | Georgios D. Tsoukalas | return ':'.join([retrieve_displayname(token, account), group]) |
356 | 32454501 | Sofia Papagiannaki | |
357 | 067cf1fc | Antony Chazapis | def update_sharing_meta(request, permissions, v_account, v_container, v_object, meta): |
358 | cca6c617 | Antony Chazapis | if permissions is None: |
359 | cca6c617 | Antony Chazapis | return
|
360 | 067cf1fc | Antony Chazapis | allowed, perm_path, perms = permissions |
361 | cca6c617 | Antony Chazapis | if len(perms) == 0: |
362 | cca6c617 | Antony Chazapis | return
|
363 | 32454501 | Sofia Papagiannaki | |
364 | 27932481 | Sofia Papagiannaki | # replace uuid with displayname
|
365 | 469d0997 | Georgios D. Tsoukalas | if TRANSLATE_UUIDS:
|
366 | 469d0997 | Georgios D. Tsoukalas | perms['read'] = [replace_permissions_uuid(
|
367 | 469d0997 | Georgios D. Tsoukalas | getattr(request, 'token', None), x) \ |
368 | 469d0997 | Georgios D. Tsoukalas | for x in perms.get('read', [])] |
369 | 469d0997 | Georgios D. Tsoukalas | perms['write'] = [replace_permissions_uuid(
|
370 | 469d0997 | Georgios D. Tsoukalas | getattr(request, 'token', None), x) \ |
371 | 469d0997 | Georgios D. Tsoukalas | for x in perms.get('write', [])] |
372 | 32454501 | Sofia Papagiannaki | |
373 | 3436eeb0 | Antony Chazapis | ret = [] |
374 | 32454501 | Sofia Papagiannaki | |
375 | cca6c617 | Antony Chazapis | r = ','.join(perms.get('read', [])) |
376 | 3436eeb0 | Antony Chazapis | if r:
|
377 | 3436eeb0 | Antony Chazapis | ret.append('read=' + r)
|
378 | cca6c617 | Antony Chazapis | w = ','.join(perms.get('write', [])) |
379 | 3436eeb0 | Antony Chazapis | if w:
|
380 | 3436eeb0 | Antony Chazapis | ret.append('write=' + w)
|
381 | cca6c617 | Antony Chazapis | meta['X-Object-Sharing'] = '; '.join(ret) |
382 | cca6c617 | Antony Chazapis | if '/'.join((v_account, v_container, v_object)) != perm_path: |
383 | cca6c617 | Antony Chazapis | meta['X-Object-Shared-By'] = perm_path
|
384 | 61efb530 | Antony Chazapis | if request.user_uniq != v_account:
|
385 | 067cf1fc | Antony Chazapis | meta['X-Object-Allowed-To'] = allowed
|
386 | 3436eeb0 | Antony Chazapis | |
387 | 2715ade4 | Sofia Papagiannaki | |
388 | e0f916bb | Antony Chazapis | def update_public_meta(public, meta): |
389 | e0f916bb | Antony Chazapis | if not public: |
390 | e0f916bb | Antony Chazapis | return
|
391 | 56f3c759 | Sofia Papagiannaki | meta['X-Object-Public'] = '/public/' + public |
392 | e0f916bb | Antony Chazapis | |
393 | 2715ade4 | Sofia Papagiannaki | |
394 | b956618e | Antony Chazapis | def validate_modification_preconditions(request, meta): |
395 | 58a6c894 | Antony Chazapis | """Check that the modified timestamp conforms with the preconditions set."""
|
396 | 2715ade4 | Sofia Papagiannaki | |
397 | 22dab079 | Antony Chazapis | if 'modified' not in meta: |
398 | 2715ade4 | Sofia Papagiannaki | return # TODO: Always return? |
399 | 2715ade4 | Sofia Papagiannaki | |
400 | b956618e | Antony Chazapis | if_modified_since = request.META.get('HTTP_IF_MODIFIED_SINCE')
|
401 | b956618e | Antony Chazapis | if if_modified_since is not None: |
402 | b956618e | Antony Chazapis | if_modified_since = parse_http_date_safe(if_modified_since) |
403 | 22dab079 | Antony Chazapis | if if_modified_since is not None and int(meta['modified']) <= if_modified_since: |
404 | 3e5d2f38 | Antony Chazapis | raise NotModified('Resource has not been modified') |
405 | 2715ade4 | Sofia Papagiannaki | |
406 | b956618e | Antony Chazapis | if_unmodified_since = request.META.get('HTTP_IF_UNMODIFIED_SINCE')
|
407 | b956618e | Antony Chazapis | if if_unmodified_since is not None: |
408 | b956618e | Antony Chazapis | if_unmodified_since = parse_http_date_safe(if_unmodified_since) |
409 | 22dab079 | Antony Chazapis | if if_unmodified_since is not None and int(meta['modified']) > if_unmodified_since: |
410 | 3e5d2f38 | Antony Chazapis | raise PreconditionFailed('Resource has been modified') |
411 | b956618e | Antony Chazapis | |
412 | 2715ade4 | Sofia Papagiannaki | |
413 | 22dab079 | Antony Chazapis | def validate_matching_preconditions(request, meta): |
414 | 58a6c894 | Antony Chazapis | """Check that the ETag conforms with the preconditions set."""
|
415 | 2715ade4 | Sofia Papagiannaki | |
416 | 33b4e4a6 | Antony Chazapis | etag = meta['checksum']
|
417 | 33b4e4a6 | Antony Chazapis | if not etag: |
418 | 33b4e4a6 | Antony Chazapis | etag = None
|
419 | 2715ade4 | Sofia Papagiannaki | |
420 | 22dab079 | Antony Chazapis | if_match = request.META.get('HTTP_IF_MATCH')
|
421 | a8326bef | Antony Chazapis | if if_match is not None: |
422 | 4a1c29ea | Antony Chazapis | if etag is None: |
423 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource does not exist') |
424 | 4a1c29ea | Antony Chazapis | if if_match != '*' and etag not in [x.lower() for x in parse_etags(if_match)]: |
425 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource ETag does not match') |
426 | 2715ade4 | Sofia Papagiannaki | |
427 | 22dab079 | Antony Chazapis | if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
|
428 | 22dab079 | Antony Chazapis | if if_none_match is not None: |
429 | a8326bef | Antony Chazapis | # TODO: If this passes, must ignore If-Modified-Since header.
|
430 | 4a1c29ea | Antony Chazapis | if etag is not None: |
431 | 4a1c29ea | Antony Chazapis | if if_none_match == '*' or etag in [x.lower() for x in parse_etags(if_none_match)]: |
432 | a8326bef | Antony Chazapis | # TODO: Continue if an If-Modified-Since header is present.
|
433 | a8326bef | Antony Chazapis | if request.method in ('HEAD', 'GET'): |
434 | a8326bef | Antony Chazapis | raise NotModified('Resource ETag matches') |
435 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource exists or ETag matches') |
436 | 22dab079 | Antony Chazapis | |
437 | 2715ade4 | Sofia Papagiannaki | |
438 | 83dd59c5 | Antony Chazapis | def split_container_object_string(s): |
439 | 6d817842 | Antony Chazapis | if not len(s) > 0 or s[0] != '/': |
440 | 6d817842 | Antony Chazapis | raise ValueError |
441 | 6d817842 | Antony Chazapis | s = s[1:]
|
442 | 8cb45c13 | Antony Chazapis | pos = s.find('/')
|
443 | 22d7b01e | Antony Chazapis | if pos == -1 or pos == len(s) - 1: |
444 | 83dd59c5 | Antony Chazapis | raise ValueError |
445 | 8cb45c13 | Antony Chazapis | return s[:pos], s[(pos + 1):] |
446 | 83dd59c5 | Antony Chazapis | |
447 | 2715ade4 | Sofia Papagiannaki | |
448 | 4d15c94e | Sofia Papagiannaki | def copy_or_move_object(request, src_account, src_container, src_name, dest_account, dest_container, dest_name, move=False, delimiter=None): |
449 | 58a6c894 | Antony Chazapis | """Copy or move an object."""
|
450 | 2715ade4 | Sofia Papagiannaki | |
451 | 53cff70c | Antony Chazapis | if 'ignore_content_type' in request.GET and 'CONTENT_TYPE' in request.META: |
452 | 53cff70c | Antony Chazapis | del(request.META['CONTENT_TYPE']) |
453 | 66ce2ca5 | Antony Chazapis | content_type, meta, permissions, public = get_object_headers(request) |
454 | 79bb41b7 | Antony Chazapis | src_version = request.META.get('HTTP_X_SOURCE_VERSION')
|
455 | b956618e | Antony Chazapis | try:
|
456 | b956618e | Antony Chazapis | if move:
|
457 | 2715ade4 | Sofia Papagiannaki | version_id = request.backend.move_object( |
458 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, src_account, src_container, src_name, |
459 | 2715ade4 | Sofia Papagiannaki | dest_account, dest_container, dest_name, |
460 | 2715ade4 | Sofia Papagiannaki | content_type, 'pithos', meta, False, permissions, delimiter) |
461 | b956618e | Antony Chazapis | else:
|
462 | 2715ade4 | Sofia Papagiannaki | version_id = request.backend.copy_object( |
463 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, src_account, src_container, src_name, |
464 | 2715ade4 | Sofia Papagiannaki | dest_account, dest_container, dest_name, |
465 | 2715ade4 | Sofia Papagiannaki | content_type, 'pithos', meta, False, permissions, src_version, delimiter) |
466 | cca6c617 | Antony Chazapis | except NotAllowedError:
|
467 | 297513ba | Antony Chazapis | raise Forbidden('Not allowed') |
468 | 7efc9f86 | Sofia Papagiannaki | except (ItemNotExists, VersionNotExists):
|
469 | b956618e | Antony Chazapis | raise ItemNotFound('Container or object does not exist') |
470 | 3436eeb0 | Antony Chazapis | except ValueError: |
471 | 3436eeb0 | Antony Chazapis | raise BadRequest('Invalid sharing header') |
472 | dfa2d4ba | Sofia Papagiannaki | except QuotaError, e:
|
473 | dfa2d4ba | Sofia Papagiannaki | raise RequestEntityTooLarge('Quota error: %s' % e) |
474 | e0f916bb | Antony Chazapis | if public is not None: |
475 | e0f916bb | Antony Chazapis | try:
|
476 | 61efb530 | Antony Chazapis | request.backend.update_object_public(request.user_uniq, dest_account, dest_container, dest_name, public) |
477 | e0f916bb | Antony Chazapis | except NotAllowedError:
|
478 | 297513ba | Antony Chazapis | raise Forbidden('Not allowed') |
479 | 7efc9f86 | Sofia Papagiannaki | except ItemNotExists:
|
480 | e0f916bb | Antony Chazapis | raise ItemNotFound('Object does not exist') |
481 | 7dd293a0 | Antony Chazapis | return version_id
|
482 | b956618e | Antony Chazapis | |
483 | 2715ade4 | Sofia Papagiannaki | |
484 | 1495b972 | Antony Chazapis | def get_int_parameter(p): |
485 | 83dd59c5 | Antony Chazapis | if p is not None: |
486 | 58a6c894 | Antony Chazapis | try:
|
487 | 83dd59c5 | Antony Chazapis | p = int(p)
|
488 | 58a6c894 | Antony Chazapis | except ValueError: |
489 | 58a6c894 | Antony Chazapis | return None |
490 | 83dd59c5 | Antony Chazapis | if p < 0: |
491 | 58a6c894 | Antony Chazapis | return None |
492 | 83dd59c5 | Antony Chazapis | return p
|
493 | 58a6c894 | Antony Chazapis | |
494 | 2715ade4 | Sofia Papagiannaki | |
495 | 22dab079 | Antony Chazapis | def get_content_length(request): |
496 | 1495b972 | Antony Chazapis | content_length = get_int_parameter(request.META.get('CONTENT_LENGTH'))
|
497 | 1495b972 | Antony Chazapis | if content_length is None: |
498 | 1495b972 | Antony Chazapis | raise LengthRequired('Missing or invalid Content-Length header') |
499 | 22dab079 | Antony Chazapis | return content_length
|
500 | 22dab079 | Antony Chazapis | |
501 | 2715ade4 | Sofia Papagiannaki | |
502 | 22dab079 | Antony Chazapis | def get_range(request, size): |
503 | 58a6c894 | Antony Chazapis | """Parse a Range header from the request.
|
504 | 2715ade4 | Sofia Papagiannaki |
|
505 | 22dab079 | Antony Chazapis | Either returns None, when the header is not existent or should be ignored,
|
506 | 22dab079 | Antony Chazapis | or a list of (offset, length) tuples - should be further checked.
|
507 | b956618e | Antony Chazapis | """
|
508 | 2715ade4 | Sofia Papagiannaki | |
509 | 22dab079 | Antony Chazapis | ranges = request.META.get('HTTP_RANGE', '').replace(' ', '') |
510 | 22dab079 | Antony Chazapis | if not ranges.startswith('bytes='): |
511 | b956618e | Antony Chazapis | return None |
512 | 2715ade4 | Sofia Papagiannaki | |
513 | 22dab079 | Antony Chazapis | ret = [] |
514 | 22dab079 | Antony Chazapis | for r in (x.strip() for x in ranges[6:].split(',')): |
515 | 22dab079 | Antony Chazapis | p = re.compile('^(?P<offset>\d*)-(?P<upto>\d*)$')
|
516 | 22dab079 | Antony Chazapis | m = p.match(r) |
517 | 22dab079 | Antony Chazapis | if not m: |
518 | 22dab079 | Antony Chazapis | return None |
519 | 22dab079 | Antony Chazapis | offset = m.group('offset')
|
520 | 22dab079 | Antony Chazapis | upto = m.group('upto')
|
521 | 22dab079 | Antony Chazapis | if offset == '' and upto == '': |
522 | b956618e | Antony Chazapis | return None |
523 | 2715ade4 | Sofia Papagiannaki | |
524 | 22dab079 | Antony Chazapis | if offset != '': |
525 | 22dab079 | Antony Chazapis | offset = int(offset)
|
526 | 22dab079 | Antony Chazapis | if upto != '': |
527 | b956618e | Antony Chazapis | upto = int(upto)
|
528 | 22dab079 | Antony Chazapis | if offset > upto:
|
529 | 22dab079 | Antony Chazapis | return None |
530 | 22dab079 | Antony Chazapis | ret.append((offset, upto - offset + 1))
|
531 | 22dab079 | Antony Chazapis | else:
|
532 | 22dab079 | Antony Chazapis | ret.append((offset, size - offset)) |
533 | b956618e | Antony Chazapis | else:
|
534 | 22dab079 | Antony Chazapis | length = int(upto)
|
535 | 22dab079 | Antony Chazapis | ret.append((size - length, length)) |
536 | 2715ade4 | Sofia Papagiannaki | |
537 | 22dab079 | Antony Chazapis | return ret
|
538 | 22dab079 | Antony Chazapis | |
539 | 2715ade4 | Sofia Papagiannaki | |
540 | 22dab079 | Antony Chazapis | def get_content_range(request): |
541 | 58a6c894 | Antony Chazapis | """Parse a Content-Range header from the request.
|
542 | 2715ade4 | Sofia Papagiannaki |
|
543 | 22dab079 | Antony Chazapis | Either returns None, when the header is not existent or should be ignored,
|
544 | 22dab079 | Antony Chazapis | or an (offset, length, total) tuple - check as length, total may be None.
|
545 | 22dab079 | Antony Chazapis | Returns (None, None, None) if the provided range is '*/*'.
|
546 | 22dab079 | Antony Chazapis | """
|
547 | 2715ade4 | Sofia Papagiannaki | |
548 | 22dab079 | Antony Chazapis | ranges = request.META.get('HTTP_CONTENT_RANGE', '') |
549 | 22dab079 | Antony Chazapis | if not ranges: |
550 | 22dab079 | Antony Chazapis | return None |
551 | 2715ade4 | Sofia Papagiannaki | |
552 | 22dab079 | Antony Chazapis | p = re.compile('^bytes (?P<offset>\d+)-(?P<upto>\d*)/(?P<total>(\d+|\*))$')
|
553 | 22dab079 | Antony Chazapis | m = p.match(ranges) |
554 | 22dab079 | Antony Chazapis | if not m: |
555 | 22dab079 | Antony Chazapis | if ranges == 'bytes */*': |
556 | 22dab079 | Antony Chazapis | return (None, None, None) |
557 | 22dab079 | Antony Chazapis | return None |
558 | 22dab079 | Antony Chazapis | offset = int(m.group('offset')) |
559 | 22dab079 | Antony Chazapis | upto = m.group('upto')
|
560 | 22dab079 | Antony Chazapis | total = m.group('total')
|
561 | 22dab079 | Antony Chazapis | if upto != '': |
562 | 22dab079 | Antony Chazapis | upto = int(upto)
|
563 | b956618e | Antony Chazapis | else:
|
564 | 22dab079 | Antony Chazapis | upto = None
|
565 | 22dab079 | Antony Chazapis | if total != '*': |
566 | 22dab079 | Antony Chazapis | total = int(total)
|
567 | 22dab079 | Antony Chazapis | else:
|
568 | 22dab079 | Antony Chazapis | total = None
|
569 | 70e526a0 | Antony Chazapis | if (upto is not None and offset > upto) or \ |
570 | 70e526a0 | Antony Chazapis | (total is not None and offset >= total) or \ |
571 | 2715ade4 | Sofia Papagiannaki | (total is not None and upto is not None and upto >= total): |
572 | 22dab079 | Antony Chazapis | return None |
573 | 2715ade4 | Sofia Papagiannaki | |
574 | 70e526a0 | Antony Chazapis | if upto is None: |
575 | 22dab079 | Antony Chazapis | length = None
|
576 | 22dab079 | Antony Chazapis | else:
|
577 | 22dab079 | Antony Chazapis | length = upto - offset + 1
|
578 | 22dab079 | Antony Chazapis | return (offset, length, total)
|
579 | b956618e | Antony Chazapis | |
580 | 2715ade4 | Sofia Papagiannaki | |
581 | 3436eeb0 | Antony Chazapis | def get_sharing(request): |
582 | 3436eeb0 | Antony Chazapis | """Parse an X-Object-Sharing header from the request.
|
583 | 2715ade4 | Sofia Papagiannaki |
|
584 | 3436eeb0 | Antony Chazapis | Raises BadRequest on error.
|
585 | 3436eeb0 | Antony Chazapis | """
|
586 | 2715ade4 | Sofia Papagiannaki | |
587 | 3436eeb0 | Antony Chazapis | permissions = request.META.get('HTTP_X_OBJECT_SHARING')
|
588 | cca6c617 | Antony Chazapis | if permissions is None: |
589 | 3436eeb0 | Antony Chazapis | return None |
590 | 2715ade4 | Sofia Papagiannaki | |
591 | 0a7f1671 | Antony Chazapis | # TODO: Document or remove '~' replacing.
|
592 | 0a7f1671 | Antony Chazapis | permissions = permissions.replace('~', '') |
593 | 2715ade4 | Sofia Papagiannaki | |
594 | 3436eeb0 | Antony Chazapis | ret = {} |
595 | cca6c617 | Antony Chazapis | permissions = permissions.replace(' ', '') |
596 | cca6c617 | Antony Chazapis | if permissions == '': |
597 | cca6c617 | Antony Chazapis | return ret
|
598 | cca6c617 | Antony Chazapis | for perm in (x for x in permissions.split(';')): |
599 | cca6c617 | Antony Chazapis | if perm.startswith('read='): |
600 | 2715ade4 | Sofia Papagiannaki | ret['read'] = list(set( |
601 | 2715ade4 | Sofia Papagiannaki | [v.replace(' ', '').lower() for v in perm[5:].split(',')])) |
602 | 02c0c3fa | Antony Chazapis | if '' in ret['read']: |
603 | 02c0c3fa | Antony Chazapis | ret['read'].remove('') |
604 | e8886082 | Antony Chazapis | if '*' in ret['read']: |
605 | e8886082 | Antony Chazapis | ret['read'] = ['*'] |
606 | 3436eeb0 | Antony Chazapis | if len(ret['read']) == 0: |
607 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
608 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: invalid length')
|
609 | 3436eeb0 | Antony Chazapis | elif perm.startswith('write='): |
610 | 2715ade4 | Sofia Papagiannaki | ret['write'] = list(set( |
611 | 2715ade4 | Sofia Papagiannaki | [v.replace(' ', '').lower() for v in perm[6:].split(',')])) |
612 | 02c0c3fa | Antony Chazapis | if '' in ret['write']: |
613 | 02c0c3fa | Antony Chazapis | ret['write'].remove('') |
614 | e8886082 | Antony Chazapis | if '*' in ret['write']: |
615 | e8886082 | Antony Chazapis | ret['write'] = ['*'] |
616 | 3436eeb0 | Antony Chazapis | if len(ret['write']) == 0: |
617 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
618 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: invalid length')
|
619 | 3436eeb0 | Antony Chazapis | else:
|
620 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
621 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: missing prefix')
|
622 | 32454501 | Sofia Papagiannaki | |
623 | 890c2065 | Sofia Papagiannaki | # replace displayname with uuid
|
624 | 469d0997 | Georgios D. Tsoukalas | if TRANSLATE_UUIDS:
|
625 | 469d0997 | Georgios D. Tsoukalas | try:
|
626 | 469d0997 | Georgios D. Tsoukalas | ret['read'] = [replace_permissions_displayname(
|
627 | 469d0997 | Georgios D. Tsoukalas | getattr(request, 'token', None), x) \ |
628 | 469d0997 | Georgios D. Tsoukalas | for x in ret.get('read', [])] |
629 | 469d0997 | Georgios D. Tsoukalas | ret['write'] = [replace_permissions_displayname(
|
630 | 469d0997 | Georgios D. Tsoukalas | getattr(request, 'token', None), x) \ |
631 | 469d0997 | Georgios D. Tsoukalas | for x in ret.get('write', [])] |
632 | 469d0997 | Georgios D. Tsoukalas | except ItemNotExists, e:
|
633 | 469d0997 | Georgios D. Tsoukalas | raise BadRequest(
|
634 | 469d0997 | Georgios D. Tsoukalas | 'Bad X-Object-Sharing header value: unknown account: %s' % e)
|
635 | 2715ade4 | Sofia Papagiannaki | |
636 | 21a8a6ff | Antony Chazapis | # Keep duplicates only in write list.
|
637 | 2715ade4 | Sofia Papagiannaki | dups = [x for x in ret.get( |
638 | 2715ade4 | Sofia Papagiannaki | 'read', []) if x in ret.get('write', []) and x != '*'] |
639 | 21a8a6ff | Antony Chazapis | if dups:
|
640 | 21a8a6ff | Antony Chazapis | for x in dups: |
641 | 21a8a6ff | Antony Chazapis | ret['read'].remove(x)
|
642 | 21a8a6ff | Antony Chazapis | if len(ret['read']) == 0: |
643 | 21a8a6ff | Antony Chazapis | del(ret['read']) |
644 | 2715ade4 | Sofia Papagiannaki | |
645 | 3436eeb0 | Antony Chazapis | return ret
|
646 | 3436eeb0 | Antony Chazapis | |
647 | 2715ade4 | Sofia Papagiannaki | |
648 | 3ab38c43 | Antony Chazapis | def get_public(request): |
649 | 3ab38c43 | Antony Chazapis | """Parse an X-Object-Public header from the request.
|
650 | 2715ade4 | Sofia Papagiannaki |
|
651 | 3ab38c43 | Antony Chazapis | Raises BadRequest on error.
|
652 | 3ab38c43 | Antony Chazapis | """
|
653 | 2715ade4 | Sofia Papagiannaki | |
654 | 3ab38c43 | Antony Chazapis | public = request.META.get('HTTP_X_OBJECT_PUBLIC')
|
655 | 3ab38c43 | Antony Chazapis | if public is None: |
656 | 3ab38c43 | Antony Chazapis | return None |
657 | 2715ade4 | Sofia Papagiannaki | |
658 | 3ab38c43 | Antony Chazapis | public = public.replace(' ', '').lower() |
659 | 3ab38c43 | Antony Chazapis | if public == 'true': |
660 | 3ab38c43 | Antony Chazapis | return True |
661 | 3ab38c43 | Antony Chazapis | elif public == 'false' or public == '': |
662 | 3ab38c43 | Antony Chazapis | return False |
663 | 3ab38c43 | Antony Chazapis | raise BadRequest('Bad X-Object-Public header value') |
664 | 3ab38c43 | Antony Chazapis | |
665 | 2715ade4 | Sofia Papagiannaki | |
666 | b956618e | Antony Chazapis | def raw_input_socket(request): |
667 | 58a6c894 | Antony Chazapis | """Return the socket for reading the rest of the request."""
|
668 | 2715ade4 | Sofia Papagiannaki | |
669 | b956618e | Antony Chazapis | server_software = request.META.get('SERVER_SOFTWARE')
|
670 | fc1b2a75 | Antony Chazapis | if server_software and server_software.startswith('mod_python'): |
671 | b956618e | Antony Chazapis | return request._req
|
672 | fc1b2a75 | Antony Chazapis | if 'wsgi.input' in request.environ: |
673 | fc1b2a75 | Antony Chazapis | return request.environ['wsgi.input'] |
674 | 08de868d | Antony Chazapis | raise NotImplemented('Unknown server software') |
675 | b956618e | Antony Chazapis | |
676 | 2715ade4 | Sofia Papagiannaki | MAX_UPLOAD_SIZE = 5 * (1024 * 1024 * 1024) # 5GB |
677 | 2715ade4 | Sofia Papagiannaki | |
678 | b956618e | Antony Chazapis | |
679 | c032f34d | Antony Chazapis | def socket_read_iterator(request, length=0, blocksize=4096): |
680 | 58a6c894 | Antony Chazapis | """Return a maximum of blocksize data read from the socket in each iteration.
|
681 | 2715ade4 | Sofia Papagiannaki |
|
682 | 22dab079 | Antony Chazapis | Read up to 'length'. If 'length' is negative, will attempt a chunked read.
|
683 | b956618e | Antony Chazapis | The maximum ammount of data read is controlled by MAX_UPLOAD_SIZE.
|
684 | b956618e | Antony Chazapis | """
|
685 | 2715ade4 | Sofia Papagiannaki | |
686 | c032f34d | Antony Chazapis | sock = raw_input_socket(request) |
687 | 2715ade4 | Sofia Papagiannaki | if length < 0: # Chunked transfers |
688 | c032f34d | Antony Chazapis | # Small version (server does the dechunking).
|
689 | 032dc768 | Antony Chazapis | if request.environ.get('mod_wsgi.input_chunked', None) or request.META['SERVER_SOFTWARE'].startswith('gunicorn'): |
690 | c032f34d | Antony Chazapis | while length < MAX_UPLOAD_SIZE:
|
691 | c032f34d | Antony Chazapis | data = sock.read(blocksize) |
692 | c032f34d | Antony Chazapis | if data == '': |
693 | c032f34d | Antony Chazapis | return
|
694 | c032f34d | Antony Chazapis | yield data
|
695 | c032f34d | Antony Chazapis | raise BadRequest('Maximum size is reached') |
696 | 2715ade4 | Sofia Papagiannaki | |
697 | c032f34d | Antony Chazapis | # Long version (do the dechunking).
|
698 | 22dab079 | Antony Chazapis | data = ''
|
699 | b956618e | Antony Chazapis | while length < MAX_UPLOAD_SIZE:
|
700 | 22dab079 | Antony Chazapis | # Get chunk size.
|
701 | 22dab079 | Antony Chazapis | if hasattr(sock, 'readline'): |
702 | 22dab079 | Antony Chazapis | chunk_length = sock.readline() |
703 | 22dab079 | Antony Chazapis | else:
|
704 | 22dab079 | Antony Chazapis | chunk_length = ''
|
705 | 22dab079 | Antony Chazapis | while chunk_length[-1:] != '\n': |
706 | 22dab079 | Antony Chazapis | chunk_length += sock.read(1)
|
707 | 22dab079 | Antony Chazapis | chunk_length.strip() |
708 | b956618e | Antony Chazapis | pos = chunk_length.find(';')
|
709 | b956618e | Antony Chazapis | if pos >= 0: |
710 | b956618e | Antony Chazapis | chunk_length = chunk_length[:pos] |
711 | b956618e | Antony Chazapis | try:
|
712 | b956618e | Antony Chazapis | chunk_length = int(chunk_length, 16) |
713 | b956618e | Antony Chazapis | except Exception, e: |
714 | 2715ade4 | Sofia Papagiannaki | raise BadRequest('Bad chunk size') |
715 | 2715ade4 | Sofia Papagiannaki | # TODO: Change to something more appropriate.
|
716 | 22dab079 | Antony Chazapis | # Check if done.
|
717 | b956618e | Antony Chazapis | if chunk_length == 0: |
718 | 22dab079 | Antony Chazapis | if len(data) > 0: |
719 | 22dab079 | Antony Chazapis | yield data
|
720 | b956618e | Antony Chazapis | return
|
721 | 22dab079 | Antony Chazapis | # Get the actual data.
|
722 | b956618e | Antony Chazapis | while chunk_length > 0: |
723 | 22dab079 | Antony Chazapis | chunk = sock.read(min(chunk_length, blocksize))
|
724 | 22dab079 | Antony Chazapis | chunk_length -= len(chunk)
|
725 | 623a0cf4 | Sofia Papagiannaki | if length > 0: |
726 | 623a0cf4 | Sofia Papagiannaki | length += len(chunk)
|
727 | 22dab079 | Antony Chazapis | data += chunk |
728 | 22dab079 | Antony Chazapis | if len(data) >= blocksize: |
729 | 22dab079 | Antony Chazapis | ret = data[:blocksize] |
730 | 22dab079 | Antony Chazapis | data = data[blocksize:] |
731 | 22dab079 | Antony Chazapis | yield ret
|
732 | 2715ade4 | Sofia Papagiannaki | sock.read(2) # CRLF |
733 | 32a437b1 | Sofia Papagiannaki | raise BadRequest('Maximum size is reached') |
734 | b956618e | Antony Chazapis | else:
|
735 | b956618e | Antony Chazapis | if length > MAX_UPLOAD_SIZE:
|
736 | 32a437b1 | Sofia Papagiannaki | raise BadRequest('Maximum size is reached') |
737 | b956618e | Antony Chazapis | while length > 0: |
738 | b956618e | Antony Chazapis | data = sock.read(min(length, blocksize))
|
739 | 7b25e082 | Antony Chazapis | if not data: |
740 | 7b25e082 | Antony Chazapis | raise BadRequest()
|
741 | b956618e | Antony Chazapis | length -= len(data)
|
742 | b956618e | Antony Chazapis | yield data
|
743 | b956618e | Antony Chazapis | |
744 | 2715ade4 | Sofia Papagiannaki | |
745 | 817890f2 | Antony Chazapis | class SaveToBackendHandler(FileUploadHandler): |
746 | 817890f2 | Antony Chazapis | """Handle a file from an HTML form the django way."""
|
747 | 2715ade4 | Sofia Papagiannaki | |
748 | 817890f2 | Antony Chazapis | def __init__(self, request=None): |
749 | 817890f2 | Antony Chazapis | super(SaveToBackendHandler, self).__init__(request) |
750 | 817890f2 | Antony Chazapis | self.backend = request.backend
|
751 | 2715ade4 | Sofia Papagiannaki | |
752 | 817890f2 | Antony Chazapis | def put_data(self, length): |
753 | 817890f2 | Antony Chazapis | if len(self.data) >= length: |
754 | 817890f2 | Antony Chazapis | block = self.data[:length]
|
755 | 817890f2 | Antony Chazapis | self.file.hashmap.append(self.backend.put_block(block)) |
756 | 817890f2 | Antony Chazapis | self.md5.update(block)
|
757 | 817890f2 | Antony Chazapis | self.data = self.data[length:] |
758 | 2715ade4 | Sofia Papagiannaki | |
759 | 817890f2 | Antony Chazapis | def new_file(self, field_name, file_name, content_type, content_length, charset=None): |
760 | 2715ade4 | Sofia Papagiannaki | self.md5 = hashlib.md5()
|
761 | 817890f2 | Antony Chazapis | self.data = '' |
762 | 2715ade4 | Sofia Papagiannaki | self.file = UploadedFile(
|
763 | 2715ade4 | Sofia Papagiannaki | name=file_name, content_type=content_type, charset=charset) |
764 | 817890f2 | Antony Chazapis | self.file.size = 0 |
765 | 817890f2 | Antony Chazapis | self.file.hashmap = []
|
766 | 2715ade4 | Sofia Papagiannaki | |
767 | 817890f2 | Antony Chazapis | def receive_data_chunk(self, raw_data, start): |
768 | 817890f2 | Antony Chazapis | self.data += raw_data
|
769 | 817890f2 | Antony Chazapis | self.file.size += len(raw_data) |
770 | 817890f2 | Antony Chazapis | self.put_data(self.request.backend.block_size) |
771 | 817890f2 | Antony Chazapis | return None |
772 | 2715ade4 | Sofia Papagiannaki | |
773 | 817890f2 | Antony Chazapis | def file_complete(self, file_size): |
774 | 817890f2 | Antony Chazapis | l = len(self.data) |
775 | 817890f2 | Antony Chazapis | if l > 0: |
776 | 817890f2 | Antony Chazapis | self.put_data(l)
|
777 | 817890f2 | Antony Chazapis | self.file.etag = self.md5.hexdigest().lower() |
778 | 817890f2 | Antony Chazapis | return self.file |
779 | 817890f2 | Antony Chazapis | |
780 | 2715ade4 | Sofia Papagiannaki | |
781 | 22dab079 | Antony Chazapis | class ObjectWrapper(object): |
782 | 58a6c894 | Antony Chazapis | """Return the object's data block-per-block in each iteration.
|
783 | 2715ade4 | Sofia Papagiannaki |
|
784 | 22dab079 | Antony Chazapis | Read from the object using the offset and length provided in each entry of the range list.
|
785 | 22dab079 | Antony Chazapis | """
|
786 | 2715ade4 | Sofia Papagiannaki | |
787 | 39593b2b | Giorgos Verigakis | def __init__(self, backend, ranges, sizes, hashmaps, boundary): |
788 | 39593b2b | Giorgos Verigakis | self.backend = backend
|
789 | 22dab079 | Antony Chazapis | self.ranges = ranges
|
790 | 8cb45c13 | Antony Chazapis | self.sizes = sizes
|
791 | 8cb45c13 | Antony Chazapis | self.hashmaps = hashmaps
|
792 | 22dab079 | Antony Chazapis | self.boundary = boundary
|
793 | 8cb45c13 | Antony Chazapis | self.size = sum(self.sizes) |
794 | 2715ade4 | Sofia Papagiannaki | |
795 | 8cb45c13 | Antony Chazapis | self.file_index = 0 |
796 | 8cb45c13 | Antony Chazapis | self.block_index = 0 |
797 | 8cb45c13 | Antony Chazapis | self.block_hash = -1 |
798 | 22dab079 | Antony Chazapis | self.block = '' |
799 | 2715ade4 | Sofia Papagiannaki | |
800 | 22dab079 | Antony Chazapis | self.range_index = -1 |
801 | 22dab079 | Antony Chazapis | self.offset, self.length = self.ranges[0] |
802 | 2715ade4 | Sofia Papagiannaki | |
803 | 22dab079 | Antony Chazapis | def __iter__(self): |
804 | 22dab079 | Antony Chazapis | return self |
805 | 2715ade4 | Sofia Papagiannaki | |
806 | 22dab079 | Antony Chazapis | def part_iterator(self): |
807 | 22dab079 | Antony Chazapis | if self.length > 0: |
808 | 8cb45c13 | Antony Chazapis | # Get the file for the current offset.
|
809 | 8cb45c13 | Antony Chazapis | file_size = self.sizes[self.file_index] |
810 | 8cb45c13 | Antony Chazapis | while self.offset >= file_size: |
811 | 8cb45c13 | Antony Chazapis | self.offset -= file_size
|
812 | 8cb45c13 | Antony Chazapis | self.file_index += 1 |
813 | 8cb45c13 | Antony Chazapis | file_size = self.sizes[self.file_index] |
814 | 2715ade4 | Sofia Papagiannaki | |
815 | 8cb45c13 | Antony Chazapis | # Get the block for the current position.
|
816 | 39593b2b | Giorgos Verigakis | self.block_index = int(self.offset / self.backend.block_size) |
817 | 8cb45c13 | Antony Chazapis | if self.block_hash != self.hashmaps[self.file_index][self.block_index]: |
818 | 2715ade4 | Sofia Papagiannaki | self.block_hash = self.hashmaps[ |
819 | 2715ade4 | Sofia Papagiannaki | self.file_index][self.block_index] |
820 | 22dab079 | Antony Chazapis | try:
|
821 | 39593b2b | Giorgos Verigakis | self.block = self.backend.get_block(self.block_hash) |
822 | 7efc9f86 | Sofia Papagiannaki | except ItemNotExists:
|
823 | 22dab079 | Antony Chazapis | raise ItemNotFound('Block does not exist') |
824 | 2715ade4 | Sofia Papagiannaki | |
825 | 22dab079 | Antony Chazapis | # Get the data from the block.
|
826 | 39593b2b | Giorgos Verigakis | bo = self.offset % self.backend.block_size |
827 | c9865fe1 | Antony Chazapis | bs = self.backend.block_size
|
828 | 45cf0bc8 | Antony Chazapis | if (self.block_index == len(self.hashmaps[self.file_index]) - 1 and |
829 | 2715ade4 | Sofia Papagiannaki | self.sizes[self.file_index] % self.backend.block_size): |
830 | c9865fe1 | Antony Chazapis | bs = self.sizes[self.file_index] % self.backend.block_size |
831 | c9865fe1 | Antony Chazapis | bl = min(self.length, bs - bo) |
832 | 22dab079 | Antony Chazapis | data = self.block[bo:bo + bl]
|
833 | 22dab079 | Antony Chazapis | self.offset += bl
|
834 | 22dab079 | Antony Chazapis | self.length -= bl
|
835 | 22dab079 | Antony Chazapis | return data
|
836 | 22dab079 | Antony Chazapis | else:
|
837 | 22dab079 | Antony Chazapis | raise StopIteration |
838 | 2715ade4 | Sofia Papagiannaki | |
839 | 22dab079 | Antony Chazapis | def next(self): |
840 | 22dab079 | Antony Chazapis | if len(self.ranges) == 1: |
841 | 22dab079 | Antony Chazapis | return self.part_iterator() |
842 | 22dab079 | Antony Chazapis | if self.range_index == len(self.ranges): |
843 | 22dab079 | Antony Chazapis | raise StopIteration |
844 | 22dab079 | Antony Chazapis | try:
|
845 | 22dab079 | Antony Chazapis | if self.range_index == -1: |
846 | 22dab079 | Antony Chazapis | raise StopIteration |
847 | 22dab079 | Antony Chazapis | return self.part_iterator() |
848 | 22dab079 | Antony Chazapis | except StopIteration: |
849 | 22dab079 | Antony Chazapis | self.range_index += 1 |
850 | 22dab079 | Antony Chazapis | out = [] |
851 | 22dab079 | Antony Chazapis | if self.range_index < len(self.ranges): |
852 | 22dab079 | Antony Chazapis | # Part header.
|
853 | 22dab079 | Antony Chazapis | self.offset, self.length = self.ranges[self.range_index] |
854 | 8cb45c13 | Antony Chazapis | self.file_index = 0 |
855 | 22dab079 | Antony Chazapis | if self.range_index > 0: |
856 | 22dab079 | Antony Chazapis | out.append('')
|
857 | 22dab079 | Antony Chazapis | out.append('--' + self.boundary) |
858 | 2715ade4 | Sofia Papagiannaki | out.append('Content-Range: bytes %d-%d/%d' % (
|
859 | 2715ade4 | Sofia Papagiannaki | self.offset, self.offset + self.length - 1, self.size)) |
860 | 22dab079 | Antony Chazapis | out.append('Content-Transfer-Encoding: binary')
|
861 | 22dab079 | Antony Chazapis | out.append('')
|
862 | 22dab079 | Antony Chazapis | out.append('')
|
863 | 22dab079 | Antony Chazapis | return '\r\n'.join(out) |
864 | 22dab079 | Antony Chazapis | else:
|
865 | 22dab079 | Antony Chazapis | # Footer.
|
866 | 22dab079 | Antony Chazapis | out.append('')
|
867 | 22dab079 | Antony Chazapis | out.append('--' + self.boundary + '--') |
868 | 22dab079 | Antony Chazapis | out.append('')
|
869 | 22dab079 | Antony Chazapis | return '\r\n'.join(out) |
870 | 22dab079 | Antony Chazapis | |
871 | 2715ade4 | Sofia Papagiannaki | |
872 | 8cb45c13 | Antony Chazapis | def object_data_response(request, sizes, hashmaps, meta, public=False): |
873 | 7bef5750 | Antony Chazapis | """Get the HttpResponse object for replying with the object's data."""
|
874 | 2715ade4 | Sofia Papagiannaki | |
875 | 7bef5750 | Antony Chazapis | # Range handling.
|
876 | 8cb45c13 | Antony Chazapis | size = sum(sizes)
|
877 | 7bef5750 | Antony Chazapis | ranges = get_range(request, size) |
878 | 7bef5750 | Antony Chazapis | if ranges is None: |
879 | 7bef5750 | Antony Chazapis | ranges = [(0, size)]
|
880 | 7bef5750 | Antony Chazapis | ret = 200
|
881 | 7bef5750 | Antony Chazapis | else:
|
882 | 7bef5750 | Antony Chazapis | check = [True for offset, length in ranges if |
883 | 2715ade4 | Sofia Papagiannaki | length <= 0 or length > size or |
884 | 2715ade4 | Sofia Papagiannaki | offset < 0 or offset >= size or |
885 | 2715ade4 | Sofia Papagiannaki | offset + length > size] |
886 | 7bef5750 | Antony Chazapis | if len(check) > 0: |
887 | 6d1e6dce | Sofia Papagiannaki | raise RangeNotSatisfiable('Requested range exceeds object limits') |
888 | 7bef5750 | Antony Chazapis | ret = 206
|
889 | 15d465b8 | Antony Chazapis | if_range = request.META.get('HTTP_IF_RANGE')
|
890 | 15d465b8 | Antony Chazapis | if if_range:
|
891 | 6d1e6dce | Sofia Papagiannaki | try:
|
892 | 15d465b8 | Antony Chazapis | # Modification time has passed instead.
|
893 | 6d1e6dce | Sofia Papagiannaki | last_modified = parse_http_date(if_range) |
894 | 6d1e6dce | Sofia Papagiannaki | if last_modified != meta['modified']: |
895 | 6d1e6dce | Sofia Papagiannaki | ranges = [(0, size)]
|
896 | 6d1e6dce | Sofia Papagiannaki | ret = 200
|
897 | 6d1e6dce | Sofia Papagiannaki | except ValueError: |
898 | 33b4e4a6 | Antony Chazapis | if if_range != meta['checksum']: |
899 | 6d1e6dce | Sofia Papagiannaki | ranges = [(0, size)]
|
900 | 6d1e6dce | Sofia Papagiannaki | ret = 200
|
901 | 2715ade4 | Sofia Papagiannaki | |
902 | 7bef5750 | Antony Chazapis | if ret == 206 and len(ranges) > 1: |
903 | 7bef5750 | Antony Chazapis | boundary = uuid.uuid4().hex |
904 | 7bef5750 | Antony Chazapis | else:
|
905 | 7bef5750 | Antony Chazapis | boundary = ''
|
906 | 39593b2b | Giorgos Verigakis | wrapper = ObjectWrapper(request.backend, ranges, sizes, hashmaps, boundary) |
907 | 7bef5750 | Antony Chazapis | response = HttpResponse(wrapper, status=ret) |
908 | 469d0997 | Georgios D. Tsoukalas | put_object_headers( |
909 | 469d0997 | Georgios D. Tsoukalas | response, meta, restricted=public, token=getattr(request, 'token', None)) |
910 | 7bef5750 | Antony Chazapis | if ret == 206: |
911 | 7bef5750 | Antony Chazapis | if len(ranges) == 1: |
912 | 7bef5750 | Antony Chazapis | offset, length = ranges[0]
|
913 | 2715ade4 | Sofia Papagiannaki | response[ |
914 | 2715ade4 | Sofia Papagiannaki | 'Content-Length'] = length # Update with the correct length. |
915 | 2715ade4 | Sofia Papagiannaki | response['Content-Range'] = 'bytes %d-%d/%d' % ( |
916 | 2715ade4 | Sofia Papagiannaki | offset, offset + length - 1, size)
|
917 | 7bef5750 | Antony Chazapis | else:
|
918 | 7bef5750 | Antony Chazapis | del(response['Content-Length']) |
919 | 2715ade4 | Sofia Papagiannaki | response['Content-Type'] = 'multipart/byteranges; boundary=%s' % ( |
920 | 2715ade4 | Sofia Papagiannaki | boundary,) |
921 | 7bef5750 | Antony Chazapis | return response
|
922 | 7bef5750 | Antony Chazapis | |
923 | 2715ade4 | Sofia Papagiannaki | |
924 | 39593b2b | Giorgos Verigakis | def put_object_block(request, hashmap, data, offset): |
925 | cb146cf9 | Antony Chazapis | """Put one block of data at the given offset."""
|
926 | 2715ade4 | Sofia Papagiannaki | |
927 | 39593b2b | Giorgos Verigakis | bi = int(offset / request.backend.block_size)
|
928 | 39593b2b | Giorgos Verigakis | bo = offset % request.backend.block_size |
929 | 39593b2b | Giorgos Verigakis | bl = min(len(data), request.backend.block_size - bo) |
930 | cb146cf9 | Antony Chazapis | if bi < len(hashmap): |
931 | 39593b2b | Giorgos Verigakis | hashmap[bi] = request.backend.update_block(hashmap[bi], data[:bl], bo) |
932 | cb146cf9 | Antony Chazapis | else:
|
933 | 39593b2b | Giorgos Verigakis | hashmap.append(request.backend.put_block(('\x00' * bo) + data[:bl]))
|
934 | 2715ade4 | Sofia Papagiannaki | return bl # Return ammount of data written. |
935 | 2715ade4 | Sofia Papagiannaki | |
936 | cb146cf9 | Antony Chazapis | |
937 | b3155065 | Antony Chazapis | def hashmap_md5(backend, hashmap, size): |
938 | cddcf432 | chazapis | """Produce the MD5 sum from the data in the hashmap."""
|
939 | 2715ade4 | Sofia Papagiannaki | |
940 | cddcf432 | chazapis | # TODO: Search backend for the MD5 of another object with the same hashmap and size...
|
941 | cddcf432 | chazapis | md5 = hashlib.md5() |
942 | b3155065 | Antony Chazapis | bs = backend.block_size |
943 | cddcf432 | chazapis | for bi, hash in enumerate(hashmap): |
944 | 2715ade4 | Sofia Papagiannaki | data = backend.get_block(hash) # Blocks come in padded. |
945 | cddcf432 | chazapis | if bi == len(hashmap) - 1: |
946 | c9865fe1 | Antony Chazapis | data = data[:size % bs] |
947 | c9865fe1 | Antony Chazapis | md5.update(data) |
948 | cddcf432 | chazapis | return md5.hexdigest().lower()
|
949 | 49133392 | Antony Chazapis | |
950 | 2715ade4 | Sofia Papagiannaki | |
951 | af7bb62f | Antony Chazapis | def simple_list_response(request, l): |
952 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'text': |
953 | 6b6b6c1e | Antony Chazapis | return '\n'.join(l) + '\n' |
954 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'xml': |
955 | af7bb62f | Antony Chazapis | return render_to_string('items.xml', {'items': l}) |
956 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'json': |
957 | 6b6b6c1e | Antony Chazapis | return json.dumps(l)
|
958 | 6b6b6c1e | Antony Chazapis | |
959 | 35d42381 | Vangelis Koukis | |
960 | edb7875c | Christos Stavrakakis | from pithos.backends.util import PithosBackendPool |
961 | 35d42381 | Vangelis Koukis | POOL_SIZE = 5
|
962 | 47462eda | Filippos Giannakos | if RADOS_STORAGE:
|
963 | 47462eda | Filippos Giannakos | BLOCK_PARAMS = { 'mappool': RADOS_POOL_MAPS,
|
964 | 47462eda | Filippos Giannakos | 'blockpool': RADOS_POOL_BLOCKS,
|
965 | 47462eda | Filippos Giannakos | } |
966 | 47462eda | Filippos Giannakos | else:
|
967 | 47462eda | Filippos Giannakos | BLOCK_PARAMS = { 'mappool': None, |
968 | 47462eda | Filippos Giannakos | 'blockpool': None, |
969 | 47462eda | Filippos Giannakos | } |
970 | 35d42381 | Vangelis Koukis | |
971 | 761c2b3c | root | |
972 | b336e6fa | Georgios D. Tsoukalas | _pithos_backend_pool = PithosBackendPool( |
973 | b336e6fa | Georgios D. Tsoukalas | size=POOL_SIZE, |
974 | b336e6fa | Georgios D. Tsoukalas | db_module=BACKEND_DB_MODULE, |
975 | b336e6fa | Georgios D. Tsoukalas | db_connection=BACKEND_DB_CONNECTION, |
976 | b336e6fa | Georgios D. Tsoukalas | block_module=BACKEND_BLOCK_MODULE, |
977 | b336e6fa | Georgios D. Tsoukalas | block_path=BACKEND_BLOCK_PATH, |
978 | b336e6fa | Georgios D. Tsoukalas | block_umask=BACKEND_BLOCK_UMASK, |
979 | b336e6fa | Georgios D. Tsoukalas | queue_module=BACKEND_QUEUE_MODULE, |
980 | b336e6fa | Georgios D. Tsoukalas | queue_hosts=BACKEND_QUEUE_HOSTS, |
981 | b336e6fa | Georgios D. Tsoukalas | queue_exchange=BACKEND_QUEUE_EXCHANGE, |
982 | b336e6fa | Georgios D. Tsoukalas | quotaholder_enabled=USE_QUOTAHOLDER, |
983 | b336e6fa | Georgios D. Tsoukalas | quotaholder_url=QUOTAHOLDER_URL, |
984 | b336e6fa | Georgios D. Tsoukalas | quotaholder_token=QUOTAHOLDER_TOKEN, |
985 | b336e6fa | Georgios D. Tsoukalas | quotaholder_client_poolsize=QUOTAHOLDER_POOLSIZE, |
986 | b336e6fa | Georgios D. Tsoukalas | free_versioning=BACKEND_FREE_VERSIONING, |
987 | 56f3c759 | Sofia Papagiannaki | block_params=BLOCK_PARAMS, |
988 | 4a105ce2 | Sofia Papagiannaki | public_url_security=PUBLIC_URL_SECURITY, |
989 | 56f3c759 | Sofia Papagiannaki | public_url_alphabet=PUBLIC_URL_ALPHABET) |
990 | 35d42381 | Vangelis Koukis | |
991 | 35d42381 | Vangelis Koukis | def get_backend(): |
992 | edb7875c | Christos Stavrakakis | backend = _pithos_backend_pool.pool_get() |
993 | edb7875c | Christos Stavrakakis | backend.default_policy['quota'] = BACKEND_QUOTA
|
994 | edb7875c | Christos Stavrakakis | backend.default_policy['versioning'] = BACKEND_VERSIONING
|
995 | f77b1da9 | Stratos Psomadakis | backend.messages = [] |
996 | edb7875c | Christos Stavrakakis | return backend
|
997 | 35d42381 | Vangelis Koukis | |
998 | 35d42381 | Vangelis Koukis | |
999 | 9fefc052 | Antony Chazapis | def update_request_headers(request): |
1000 | 9fefc052 | Antony Chazapis | # Handle URL-encoded keys and values.
|
1001 | 2715ade4 | Sofia Papagiannaki | meta = dict([(
|
1002 | 2715ade4 | Sofia Papagiannaki | k, v) for k, v in request.META.iteritems() if k.startswith('HTTP_')]) |
1003 | 88283e9e | Antony Chazapis | for k, v in meta.iteritems(): |
1004 | 88283e9e | Antony Chazapis | try:
|
1005 | 88283e9e | Antony Chazapis | k.decode('ascii')
|
1006 | 88283e9e | Antony Chazapis | v.decode('ascii')
|
1007 | 88283e9e | Antony Chazapis | except UnicodeDecodeError: |
1008 | 88283e9e | Antony Chazapis | raise BadRequest('Bad character in headers.') |
1009 | 88283e9e | Antony Chazapis | if '%' in k or '%' in v: |
1010 | 88283e9e | Antony Chazapis | del(request.META[k])
|
1011 | 2715ade4 | Sofia Papagiannaki | request.META[unquote(k)] = smart_unicode(unquote( |
1012 | 2715ade4 | Sofia Papagiannaki | v), strings_only=True)
|
1013 | 2715ade4 | Sofia Papagiannaki | |
1014 | 9fefc052 | Antony Chazapis | |
1015 | b956618e | Antony Chazapis | def update_response_headers(request, response): |
1016 | b956618e | Antony Chazapis | if request.serialization == 'xml': |
1017 | b956618e | Antony Chazapis | response['Content-Type'] = 'application/xml; charset=UTF-8' |
1018 | b956618e | Antony Chazapis | elif request.serialization == 'json': |
1019 | b956618e | Antony Chazapis | response['Content-Type'] = 'application/json; charset=UTF-8' |
1020 | 22dab079 | Antony Chazapis | elif not response['Content-Type']: |
1021 | b956618e | Antony Chazapis | response['Content-Type'] = 'text/plain; charset=UTF-8' |
1022 | 2715ade4 | Sofia Papagiannaki | |
1023 | 9fefc052 | Antony Chazapis | if (not response.has_header('Content-Length') and |
1024 | 9fefc052 | Antony Chazapis | not (response.has_header('Content-Type') and |
1025 | 9fefc052 | Antony Chazapis | response['Content-Type'].startswith('multipart/byteranges'))): |
1026 | b980169d | Antony Chazapis | response['Content-Length'] = len(response.content) |
1027 | 2715ade4 | Sofia Papagiannaki | |
1028 | 9fefc052 | Antony Chazapis | # URL-encode unicode in headers.
|
1029 | 9fefc052 | Antony Chazapis | meta = response.items() |
1030 | 9fefc052 | Antony Chazapis | for k, v in meta: |
1031 | 88283e9e | Antony Chazapis | if (k.startswith('X-Account-') or k.startswith('X-Container-') or |
1032 | 2715ade4 | Sofia Papagiannaki | k.startswith('X-Object-') or k.startswith('Content-')): |
1033 | 9fefc052 | Antony Chazapis | del(response[k])
|
1034 | 88283e9e | Antony Chazapis | response[quote(k)] = quote(v, safe='/=,:@; ')
|
1035 | b956618e | Antony Chazapis | |
1036 | 2715ade4 | Sofia Papagiannaki | |
1037 | b956618e | Antony Chazapis | def render_fault(request, fault): |
1038 | a7dff008 | Antony Chazapis | if isinstance(fault, InternalServerError) and settings.DEBUG: |
1039 | b956618e | Antony Chazapis | fault.details = format_exc(fault) |
1040 | 2715ade4 | Sofia Papagiannaki | |
1041 | b956618e | Antony Chazapis | request.serialization = 'text'
|
1042 | 08de868d | Antony Chazapis | data = fault.message + '\n'
|
1043 | 08de868d | Antony Chazapis | if fault.details:
|
1044 | 08de868d | Antony Chazapis | data += '\n' + fault.details
|
1045 | b956618e | Antony Chazapis | response = HttpResponse(data, status=fault.code) |
1046 | b956618e | Antony Chazapis | update_response_headers(request, response) |
1047 | b956618e | Antony Chazapis | return response
|
1048 | b956618e | Antony Chazapis | |
1049 | 2715ade4 | Sofia Papagiannaki | |
1050 | b956618e | Antony Chazapis | def request_serialization(request, format_allowed=False): |
1051 | 58a6c894 | Antony Chazapis | """Return the serialization format requested.
|
1052 | 2715ade4 | Sofia Papagiannaki |
|
1053 | b956618e | Antony Chazapis | Valid formats are 'text' and 'json', 'xml' if 'format_allowed' is True.
|
1054 | b956618e | Antony Chazapis | """
|
1055 | 2715ade4 | Sofia Papagiannaki | |
1056 | b956618e | Antony Chazapis | if not format_allowed: |
1057 | b956618e | Antony Chazapis | return 'text' |
1058 | 2715ade4 | Sofia Papagiannaki | |
1059 | b956618e | Antony Chazapis | format = request.GET.get('format')
|
1060 | b956618e | Antony Chazapis | if format == 'json': |
1061 | b956618e | Antony Chazapis | return 'json' |
1062 | b956618e | Antony Chazapis | elif format == 'xml': |
1063 | b956618e | Antony Chazapis | return 'xml' |
1064 | 2715ade4 | Sofia Papagiannaki | |
1065 | f9f15f92 | Antony Chazapis | for item in request.META.get('HTTP_ACCEPT', '').split(','): |
1066 | f9f15f92 | Antony Chazapis | accept, sep, rest = item.strip().partition(';')
|
1067 | f9f15f92 | Antony Chazapis | if accept == 'application/json': |
1068 | f9f15f92 | Antony Chazapis | return 'json' |
1069 | f9f15f92 | Antony Chazapis | elif accept == 'application/xml' or accept == 'text/xml': |
1070 | f9f15f92 | Antony Chazapis | return 'xml' |
1071 | 2715ade4 | Sofia Papagiannaki | |
1072 | b956618e | Antony Chazapis | return 'text' |
1073 | b956618e | Antony Chazapis | |
1074 | c846fad1 | Sofia Papagiannaki | def get_pithos_usage(usage): |
1075 | c846fad1 | Sofia Papagiannaki | for u in usage: |
1076 | c846fad1 | Sofia Papagiannaki | if u.get('name') == 'pithos+.diskspace': |
1077 | c846fad1 | Sofia Papagiannaki | return u
|
1078 | c846fad1 | Sofia Papagiannaki | |
1079 | c846fad1 | Sofia Papagiannaki | def api_method(http_method=None, format_allowed=False, user_required=True, |
1080 | c846fad1 | Sofia Papagiannaki | request_usage=False):
|
1081 | 58a6c894 | Antony Chazapis | """Decorator function for views that implement an API method."""
|
1082 | 2715ade4 | Sofia Papagiannaki | |
1083 | b956618e | Antony Chazapis | def decorator(func): |
1084 | b956618e | Antony Chazapis | @wraps(func)
|
1085 | b956618e | Antony Chazapis | def wrapper(request, *args, **kwargs): |
1086 | b956618e | Antony Chazapis | try:
|
1087 | b956618e | Antony Chazapis | if http_method and request.method != http_method: |
1088 | b956618e | Antony Chazapis | raise BadRequest('Method not allowed.') |
1089 | 2715ade4 | Sofia Papagiannaki | |
1090 | dfdf4802 | Sofia Papagiannaki | if user_required:
|
1091 | dfdf4802 | Sofia Papagiannaki | token = None
|
1092 | dfdf4802 | Sofia Papagiannaki | if request.method in ('HEAD', 'GET') and COOKIE_NAME in request.COOKIES: |
1093 | 2715ade4 | Sofia Papagiannaki | cookie_value = unquote( |
1094 | 2715ade4 | Sofia Papagiannaki | request.COOKIES.get(COOKIE_NAME, ''))
|
1095 | bf45cb4a | Sofia Papagiannaki | account, sep, token = cookie_value.partition('|')
|
1096 | 2715ade4 | Sofia Papagiannaki | get_user(request, |
1097 | c846fad1 | Sofia Papagiannaki | AUTHENTICATION_URL, |
1098 | c846fad1 | Sofia Papagiannaki | AUTHENTICATION_USERS, |
1099 | c846fad1 | Sofia Papagiannaki | token, |
1100 | 2150482f | Sofia Papagiannaki | request_usage) |
1101 | dfdf4802 | Sofia Papagiannaki | if getattr(request, 'user', None) is None: |
1102 | dfdf4802 | Sofia Papagiannaki | raise Unauthorized('Access denied') |
1103 | b3102a96 | Sofia Papagiannaki | assert getattr(request, 'user_uniq', None) != None |
1104 | 27932481 | Sofia Papagiannaki | request.user_usage = get_pithos_usage(request.user.get('usage', []))
|
1105 | 27932481 | Sofia Papagiannaki | request.token = request.GET.get('X-Auth-Token', request.META.get('HTTP_X_AUTH_TOKEN', token)) |
1106 | 27932481 | Sofia Papagiannaki | |
1107 | b956618e | Antony Chazapis | # The args variable may contain up to (account, container, object).
|
1108 | b956618e | Antony Chazapis | if len(args) > 1 and len(args[1]) > 256: |
1109 | b956618e | Antony Chazapis | raise BadRequest('Container name too large.') |
1110 | b956618e | Antony Chazapis | if len(args) > 2 and len(args[2]) > 1024: |
1111 | b956618e | Antony Chazapis | raise BadRequest('Object name too large.') |
1112 | 2715ade4 | Sofia Papagiannaki | |
1113 | 9fefc052 | Antony Chazapis | # Format and check headers.
|
1114 | 9fefc052 | Antony Chazapis | update_request_headers(request) |
1115 | 2715ade4 | Sofia Papagiannaki | |
1116 | b956618e | Antony Chazapis | # Fill in custom request variables.
|
1117 | 2715ade4 | Sofia Papagiannaki | request.serialization = request_serialization( |
1118 | 2715ade4 | Sofia Papagiannaki | request, format_allowed) |
1119 | 228de81b | Antony Chazapis | request.backend = get_backend() |
1120 | 2715ade4 | Sofia Papagiannaki | |
1121 | b956618e | Antony Chazapis | response = func(request, *args, **kwargs) |
1122 | b956618e | Antony Chazapis | update_response_headers(request, response) |
1123 | b956618e | Antony Chazapis | return response
|
1124 | b956618e | Antony Chazapis | except Fault, fault:
|
1125 | 6e9c8fc1 | Christos Stavrakakis | if fault.code >= 500: |
1126 | 6e9c8fc1 | Christos Stavrakakis | logger.exception("API Fault")
|
1127 | b956618e | Antony Chazapis | return render_fault(request, fault)
|
1128 | b956618e | Antony Chazapis | except BaseException, e: |
1129 | b956618e | Antony Chazapis | logger.exception('Unexpected error: %s' % e)
|
1130 | f5a1e653 | Sofia Papagiannaki | fault = InternalServerError('Unexpected error')
|
1131 | b956618e | Antony Chazapis | return render_fault(request, fault)
|
1132 | 7b25e082 | Antony Chazapis | finally:
|
1133 | 297513ba | Antony Chazapis | if getattr(request, 'backend', None) is not None: |
1134 | d14fe290 | Antony Chazapis | request.backend.close() |
1135 | b956618e | Antony Chazapis | return wrapper
|
1136 | b956618e | Antony Chazapis | return decorator |