root / snf-pithos-app / pithos / api / util.py @ a9420179
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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 | bb4eafc6 | Antony Chazapis | from pithos.api.short_url import encode_url |
59 | a7dff008 | Antony Chazapis | from pithos.api.settings import (BACKEND_DB_MODULE, BACKEND_DB_CONNECTION, |
60 | 761c2b3c | root | BACKEND_BLOCK_MODULE, BACKEND_BLOCK_PATH, |
61 | 761c2b3c | root | BACKEND_BLOCK_UMASK, |
62 | f4fbb0fa | Sofia Papagiannaki | BACKEND_QUEUE_MODULE, BACKEND_QUEUE_HOSTS, |
63 | f4fbb0fa | Sofia Papagiannaki | BACKEND_QUEUE_EXCHANGE, |
64 | 3173699c | Sofia Papagiannaki | QUOTAHOLDER_URL, QUOTAHOLDER_TOKEN, |
65 | 3173699c | Sofia Papagiannaki | BACKEND_QUOTA, BACKEND_VERSIONING, |
66 | b1dadd0e | Sofia Papagiannaki | BACKEND_FREE_VERSIONING, |
67 | 761c2b3c | root | AUTHENTICATION_URL, AUTHENTICATION_USERS, |
68 | 7dc78140 | Sofia Papagiannaki | SERVICE_TOKEN, COOKIE_NAME, USER_INFO_URL, |
69 | 47462eda | Filippos Giannakos | RADOS_STORAGE, RADOS_POOL_BLOCKS, |
70 | 47462eda | Filippos Giannakos | RADOS_POOL_MAPS) |
71 | 39593b2b | Giorgos Verigakis | from pithos.backends import connect_backend |
72 | 32454501 | Sofia Papagiannaki | from pithos.backends.base import (NotAllowedError, QuotaError, ItemNotExists, |
73 | 32454501 | Sofia Papagiannaki | VersionNotExists) |
74 | 32454501 | Sofia Papagiannaki | from synnefo.lib.astakos import get_user_uuid, get_username |
75 | b956618e | Antony Chazapis | |
76 | b956618e | Antony Chazapis | import logging |
77 | 22dab079 | Antony Chazapis | import re |
78 | cbfb6636 | Sofia Papagiannaki | import hashlib |
79 | 7bef5750 | Antony Chazapis | import uuid |
80 | c48acbfd | Sofia Papagiannaki | import decimal |
81 | 8c793655 | Antony Chazapis | |
82 | b956618e | Antony Chazapis | |
83 | b956618e | Antony Chazapis | logger = logging.getLogger(__name__) |
84 | b956618e | Antony Chazapis | |
85 | b956618e | Antony Chazapis | |
86 | e11087c2 | Antony Chazapis | class UTC(tzinfo): |
87 | 2715ade4 | Sofia Papagiannaki | def utcoffset(self, dt): |
88 | 2715ade4 | Sofia Papagiannaki | return timedelta(0) |
89 | e11087c2 | Antony Chazapis | |
90 | 2715ade4 | Sofia Papagiannaki | def tzname(self, dt): |
91 | 2715ade4 | Sofia Papagiannaki | return 'UTC' |
92 | e11087c2 | Antony Chazapis | |
93 | 2715ade4 | Sofia Papagiannaki | def dst(self, dt): |
94 | 2715ade4 | Sofia Papagiannaki | return timedelta(0) |
95 | e11087c2 | Antony Chazapis | |
96 | e11087c2 | Antony Chazapis | |
97 | c48acbfd | Sofia Papagiannaki | def json_encode_decimal(obj): |
98 | c48acbfd | Sofia Papagiannaki | if isinstance(obj, decimal.Decimal): |
99 | c48acbfd | Sofia Papagiannaki | return str(obj) |
100 | c48acbfd | Sofia Papagiannaki | raise TypeError(repr(obj) + " is not JSON serializable") |
101 | c48acbfd | Sofia Papagiannaki | |
102 | 2715ade4 | Sofia Papagiannaki | |
103 | e11087c2 | Antony Chazapis | def isoformat(d): |
104 | 2715ade4 | Sofia Papagiannaki | """Return an ISO8601 date string that includes a timezone."""
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105 | 2715ade4 | Sofia Papagiannaki | |
106 | 2715ade4 | Sofia Papagiannaki | return d.replace(tzinfo=UTC()).isoformat()
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107 | e11087c2 | Antony Chazapis | |
108 | e11087c2 | Antony Chazapis | |
109 | 804e8fe7 | Antony Chazapis | def rename_meta_key(d, old, new): |
110 | 804e8fe7 | Antony Chazapis | if old not in d: |
111 | 804e8fe7 | Antony Chazapis | return
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112 | 804e8fe7 | Antony Chazapis | d[new] = d[old] |
113 | 804e8fe7 | Antony Chazapis | del(d[old])
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114 | 804e8fe7 | Antony Chazapis | |
115 | 2715ade4 | Sofia Papagiannaki | |
116 | 02c0c3fa | Antony Chazapis | def printable_header_dict(d): |
117 | b956618e | Antony Chazapis | """Format a meta dictionary for printing out json/xml.
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118 | 2715ade4 | Sofia Papagiannaki |
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119 | 804e8fe7 | Antony Chazapis | Convert all keys to lower case and replace dashes with underscores.
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120 | 804e8fe7 | Antony Chazapis | Format 'last_modified' timestamp.
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121 | b956618e | Antony Chazapis | """
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122 | 2715ade4 | Sofia Papagiannaki | |
123 | 371d907a | Antony Chazapis | if 'last_modified' in d and d['last_modified']: |
124 | 2715ade4 | Sofia Papagiannaki | d['last_modified'] = isoformat(
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125 | 2715ade4 | Sofia Papagiannaki | datetime.fromtimestamp(d['last_modified']))
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126 | b956618e | Antony Chazapis | return dict([(k.lower().replace('-', '_'), v) for k, v in d.iteritems()]) |
127 | b956618e | Antony Chazapis | |
128 | 2715ade4 | Sofia Papagiannaki | |
129 | 02c0c3fa | Antony Chazapis | def format_header_key(k): |
130 | 58a6c894 | Antony Chazapis | """Convert underscores to dashes and capitalize intra-dash strings."""
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131 | b956618e | Antony Chazapis | return '-'.join([x.capitalize() for x in k.replace('_', '-').split('-')]) |
132 | b956618e | Antony Chazapis | |
133 | 2715ade4 | Sofia Papagiannaki | |
134 | 02c0c3fa | Antony Chazapis | def get_header_prefix(request, prefix): |
135 | 02c0c3fa | Antony Chazapis | """Get all prefix-* request headers in a dict. Reformat keys with format_header_key()."""
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136 | 2715ade4 | Sofia Papagiannaki | |
137 | b956618e | Antony Chazapis | prefix = 'HTTP_' + prefix.upper().replace('-', '_') |
138 | 3ab38c43 | Antony Chazapis | # TODO: Document or remove '~' replacing.
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139 | 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)]) |
140 | 02c0c3fa | Antony Chazapis | |
141 | 2715ade4 | Sofia Papagiannaki | |
142 | 62bf8157 | Antony Chazapis | def check_meta_headers(meta): |
143 | 62bf8157 | Antony Chazapis | if len(meta) > 90: |
144 | 62bf8157 | Antony Chazapis | raise BadRequest('Too many headers.') |
145 | 62bf8157 | Antony Chazapis | for k, v in meta.iteritems(): |
146 | 62bf8157 | Antony Chazapis | if len(k) > 128: |
147 | 62bf8157 | Antony Chazapis | raise BadRequest('Header name too large.') |
148 | 62bf8157 | Antony Chazapis | if len(v) > 256: |
149 | 62bf8157 | Antony Chazapis | raise BadRequest('Header value too large.') |
150 | 62bf8157 | Antony Chazapis | |
151 | 2715ade4 | Sofia Papagiannaki | |
152 | 02c0c3fa | Antony Chazapis | def get_account_headers(request): |
153 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Account-Meta-')
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154 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
155 | 02c0c3fa | Antony Chazapis | groups = {} |
156 | 02c0c3fa | Antony Chazapis | for k, v in get_header_prefix(request, 'X-Account-Group-').iteritems(): |
157 | 02c0c3fa | Antony Chazapis | n = k[16:].lower()
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158 | 02c0c3fa | Antony Chazapis | if '-' in n or '_' in n: |
159 | 02c0c3fa | Antony Chazapis | raise BadRequest('Bad characters in group name') |
160 | 02c0c3fa | Antony Chazapis | groups[n] = v.replace(' ', '').split(',') |
161 | 40d6b76d | Antony Chazapis | while '' in groups[n]: |
162 | 02c0c3fa | Antony Chazapis | groups[n].remove('')
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163 | 02c0c3fa | Antony Chazapis | return meta, groups
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164 | 02c0c3fa | Antony Chazapis | |
165 | 2715ade4 | Sofia Papagiannaki | |
166 | 4d366a03 | Sofia Papagiannaki | def put_account_translation_headers(response, accounts): |
167 | 4d366a03 | Sofia Papagiannaki | for x in accounts: |
168 | 4d366a03 | Sofia Papagiannaki | k = smart_str('X-Account-Presentation-%s' % x, strings_only=True) |
169 | 4d366a03 | Sofia Papagiannaki | v = smart_str(retrieve_username(x), strings_only=True)
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170 | 4d366a03 | Sofia Papagiannaki | response[k] = v |
171 | 4d366a03 | Sofia Papagiannaki | |
172 | 4d366a03 | Sofia Papagiannaki | |
173 | 647a5f48 | Antony Chazapis | def put_account_headers(response, meta, groups, policy): |
174 | f6c97079 | Antony Chazapis | if 'count' in meta: |
175 | f6c97079 | Antony Chazapis | response['X-Account-Container-Count'] = meta['count'] |
176 | f6c97079 | Antony Chazapis | if 'bytes' in meta: |
177 | f6c97079 | Antony Chazapis | response['X-Account-Bytes-Used'] = meta['bytes'] |
178 | d065f612 | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
179 | b956618e | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Account-Meta-')]: |
180 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
181 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
182 | 83dd59c5 | Antony Chazapis | if 'until_timestamp' in meta: |
183 | 2715ade4 | Sofia Papagiannaki | response['X-Account-Until-Timestamp'] = http_date(
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184 | 2715ade4 | Sofia Papagiannaki | int(meta['until_timestamp'])) |
185 | 02c0c3fa | Antony Chazapis | for k, v in groups.iteritems(): |
186 | e7b51248 | Sofia Papagiannaki | k = smart_str(k, strings_only=True)
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187 | e7b51248 | Sofia Papagiannaki | k = format_header_key('X-Account-Group-' + k)
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188 | e7b51248 | Sofia Papagiannaki | v = smart_str(','.join(v), strings_only=True) |
189 | e7b51248 | Sofia Papagiannaki | response[k] = v |
190 | 647a5f48 | Antony Chazapis | for k, v in policy.iteritems(): |
191 | 647a5f48 | Antony Chazapis | response[smart_str(format_header_key('X-Account-Policy-' + k), strings_only=True)] = smart_str(v, strings_only=True) |
192 | 647a5f48 | Antony Chazapis | |
193 | 2715ade4 | Sofia Papagiannaki | |
194 | 02c0c3fa | Antony Chazapis | def get_container_headers(request): |
195 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Container-Meta-')
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196 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
197 | 3ab38c43 | Antony Chazapis | policy = dict([(k[19:].lower(), v.replace(' ', '')) for k, v in get_header_prefix(request, 'X-Container-Policy-').iteritems()]) |
198 | 3ab38c43 | Antony Chazapis | return meta, policy
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199 | b956618e | Antony Chazapis | |
200 | 2715ade4 | Sofia Papagiannaki | |
201 | 39593b2b | Giorgos Verigakis | def put_container_headers(request, response, meta, policy): |
202 | f6c97079 | Antony Chazapis | if 'count' in meta: |
203 | f6c97079 | Antony Chazapis | response['X-Container-Object-Count'] = meta['count'] |
204 | f6c97079 | Antony Chazapis | if 'bytes' in meta: |
205 | f6c97079 | Antony Chazapis | response['X-Container-Bytes-Used'] = meta['bytes'] |
206 | 58a6c894 | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
207 | b956618e | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Container-Meta-')]: |
208 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
209 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
210 | 2715ade4 | Sofia Papagiannaki | l = [smart_str(x, strings_only=True) for x in meta['object_meta'] |
211 | 2715ade4 | Sofia Papagiannaki | if x.startswith('X-Object-Meta-')] |
212 | e7b51248 | Sofia Papagiannaki | response['X-Container-Object-Meta'] = ','.join([x[14:] for x in l]) |
213 | 39593b2b | Giorgos Verigakis | response['X-Container-Block-Size'] = request.backend.block_size
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214 | 39593b2b | Giorgos Verigakis | response['X-Container-Block-Hash'] = request.backend.hash_algorithm
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215 | 83dd59c5 | Antony Chazapis | if 'until_timestamp' in meta: |
216 | 2715ade4 | Sofia Papagiannaki | response['X-Container-Until-Timestamp'] = http_date(
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217 | 2715ade4 | Sofia Papagiannaki | int(meta['until_timestamp'])) |
218 | 3ab38c43 | Antony Chazapis | for k, v in policy.iteritems(): |
219 | e7b51248 | Sofia Papagiannaki | response[smart_str(format_header_key('X-Container-Policy-' + k), strings_only=True)] = smart_str(v, strings_only=True) |
220 | b956618e | Antony Chazapis | |
221 | 2715ade4 | Sofia Papagiannaki | |
222 | 02c0c3fa | Antony Chazapis | def get_object_headers(request): |
223 | 66ce2ca5 | Antony Chazapis | content_type = request.META.get('CONTENT_TYPE', None) |
224 | 02c0c3fa | Antony Chazapis | meta = get_header_prefix(request, 'X-Object-Meta-')
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225 | 62bf8157 | Antony Chazapis | check_meta_headers(meta) |
226 | b956618e | Antony Chazapis | if request.META.get('HTTP_CONTENT_ENCODING'): |
227 | b956618e | Antony Chazapis | meta['Content-Encoding'] = request.META['HTTP_CONTENT_ENCODING'] |
228 | 22dab079 | Antony Chazapis | if request.META.get('HTTP_CONTENT_DISPOSITION'): |
229 | 22dab079 | Antony Chazapis | meta['Content-Disposition'] = request.META['HTTP_CONTENT_DISPOSITION'] |
230 | b956618e | Antony Chazapis | if request.META.get('HTTP_X_OBJECT_MANIFEST'): |
231 | b956618e | Antony Chazapis | meta['X-Object-Manifest'] = request.META['HTTP_X_OBJECT_MANIFEST'] |
232 | 66ce2ca5 | Antony Chazapis | return content_type, meta, get_sharing(request), get_public(request)
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233 | b956618e | Antony Chazapis | |
234 | 2715ade4 | Sofia Papagiannaki | |
235 | 3ab38c43 | Antony Chazapis | def put_object_headers(response, meta, restricted=False): |
236 | 33b4e4a6 | Antony Chazapis | response['ETag'] = meta['checksum'] |
237 | b956618e | Antony Chazapis | response['Content-Length'] = meta['bytes'] |
238 | 66ce2ca5 | Antony Chazapis | response['Content-Type'] = meta.get('type', 'application/octet-stream') |
239 | b956618e | Antony Chazapis | response['Last-Modified'] = http_date(int(meta['modified'])) |
240 | 3ab38c43 | Antony Chazapis | if not restricted: |
241 | 4a1c29ea | Antony Chazapis | response['X-Object-Hash'] = meta['hash'] |
242 | 37bee317 | Antony Chazapis | response['X-Object-UUID'] = meta['uuid'] |
243 | 88dd5c4d | Sofia Papagiannaki | modified_by = retrieve_username(meta['modified_by'])
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244 | 2715ade4 | Sofia Papagiannaki | response['X-Object-Modified-By'] = smart_str(
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245 | 88dd5c4d | Sofia Papagiannaki | modified_by, strings_only=True)
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246 | 7bef5750 | Antony Chazapis | response['X-Object-Version'] = meta['version'] |
247 | 2715ade4 | Sofia Papagiannaki | response['X-Object-Version-Timestamp'] = http_date(
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248 | 2715ade4 | Sofia Papagiannaki | int(meta['version_timestamp'])) |
249 | 7bef5750 | Antony Chazapis | for k in [x for x in meta.keys() if x.startswith('X-Object-Meta-')]: |
250 | 2715ade4 | Sofia Papagiannaki | response[smart_str( |
251 | 2715ade4 | Sofia Papagiannaki | k, strings_only=True)] = smart_str(meta[k], strings_only=True) |
252 | 2715ade4 | Sofia Papagiannaki | for k in ( |
253 | 2715ade4 | Sofia Papagiannaki | 'Content-Encoding', 'Content-Disposition', 'X-Object-Manifest', |
254 | 2715ade4 | Sofia Papagiannaki | 'X-Object-Sharing', 'X-Object-Shared-By', 'X-Object-Allowed-To', |
255 | 2715ade4 | Sofia Papagiannaki | 'X-Object-Public'):
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256 | 7bef5750 | Antony Chazapis | if k in meta: |
257 | e7b51248 | Sofia Papagiannaki | response[k] = smart_str(meta[k], strings_only=True)
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258 | 7bef5750 | Antony Chazapis | else:
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259 | c9af0703 | Antony Chazapis | for k in ('Content-Encoding', 'Content-Disposition'): |
260 | 7bef5750 | Antony Chazapis | if k in meta: |
261 | e8d003e8 | Antony Chazapis | response[k] = smart_str(meta[k], strings_only=True)
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262 | b956618e | Antony Chazapis | |
263 | 2715ade4 | Sofia Papagiannaki | |
264 | 8cb45c13 | Antony Chazapis | def update_manifest_meta(request, v_account, meta): |
265 | 8cb45c13 | Antony Chazapis | """Update metadata if the object has an X-Object-Manifest."""
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266 | 2715ade4 | Sofia Papagiannaki | |
267 | 8cb45c13 | Antony Chazapis | if 'X-Object-Manifest' in meta: |
268 | 4a1c29ea | Antony Chazapis | etag = ''
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269 | 8cb45c13 | Antony Chazapis | bytes = 0
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270 | 8cb45c13 | Antony Chazapis | try:
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271 | 2715ade4 | Sofia Papagiannaki | src_container, src_name = split_container_object_string( |
272 | 2715ade4 | Sofia Papagiannaki | '/' + meta['X-Object-Manifest']) |
273 | 2715ade4 | Sofia Papagiannaki | objects = request.backend.list_objects( |
274 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, v_account, |
275 | 2715ade4 | Sofia Papagiannaki | src_container, prefix=src_name, virtual=False)
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276 | 8cb45c13 | Antony Chazapis | for x in objects: |
277 | 61efb530 | Antony Chazapis | src_meta = request.backend.get_object_meta(request.user_uniq, |
278 | 2715ade4 | Sofia Papagiannaki | v_account, src_container, x[0], 'pithos', x[1]) |
279 | 33b4e4a6 | Antony Chazapis | etag += src_meta['checksum']
|
280 | 8cb45c13 | Antony Chazapis | bytes += src_meta['bytes'] |
281 | 8cb45c13 | Antony Chazapis | except:
|
282 | 8cb45c13 | Antony Chazapis | # Ignore errors.
|
283 | 8cb45c13 | Antony Chazapis | return
|
284 | 8cb45c13 | Antony Chazapis | meta['bytes'] = bytes |
285 | 8cb45c13 | Antony Chazapis | md5 = hashlib.md5() |
286 | 4a1c29ea | Antony Chazapis | md5.update(etag) |
287 | 33b4e4a6 | Antony Chazapis | meta['checksum'] = md5.hexdigest().lower()
|
288 | 8cb45c13 | Antony Chazapis | |
289 | 9839cc96 | root | def is_uuid(str): |
290 | 9839cc96 | root | try:
|
291 | 9839cc96 | root | uuid.UUID(str)
|
292 | 9839cc96 | root | except ValueError: |
293 | 9839cc96 | root | return False |
294 | 9839cc96 | root | else:
|
295 | 9839cc96 | root | return True |
296 | 2715ade4 | Sofia Papagiannaki | |
297 | 32454501 | Sofia Papagiannaki | def retrieve_username(uuid): |
298 | 32454501 | Sofia Papagiannaki | try:
|
299 | 32454501 | Sofia Papagiannaki | return get_username(
|
300 | 32454501 | Sofia Papagiannaki | SERVICE_TOKEN, uuid, USER_INFO_URL, AUTHENTICATION_USERS) |
301 | 32454501 | Sofia Papagiannaki | except:
|
302 | 32454501 | Sofia Papagiannaki | # if it fails just leave the metadata intact
|
303 | 32454501 | Sofia Papagiannaki | return uuid
|
304 | 32454501 | Sofia Papagiannaki | |
305 | 32454501 | Sofia Papagiannaki | def retrieve_uuid(username): |
306 | 9839cc96 | root | if is_uuid(username):
|
307 | 7f1f0464 | Georgios D. Tsoukalas | return username
|
308 | 88dd5c4d | Sofia Papagiannaki | |
309 | 32454501 | Sofia Papagiannaki | try:
|
310 | 32454501 | Sofia Papagiannaki | return get_user_uuid(
|
311 | 32454501 | Sofia Papagiannaki | SERVICE_TOKEN, username, USER_INFO_URL, AUTHENTICATION_USERS) |
312 | 32454501 | Sofia Papagiannaki | except Exception, e: |
313 | 32454501 | Sofia Papagiannaki | if e.args:
|
314 | 32454501 | Sofia Papagiannaki | status = e.args[-1]
|
315 | 32454501 | Sofia Papagiannaki | if status == 404: |
316 | 32454501 | Sofia Papagiannaki | raise ItemNotExists(username)
|
317 | 32454501 | Sofia Papagiannaki | raise
|
318 | 32454501 | Sofia Papagiannaki | |
319 | 32454501 | Sofia Papagiannaki | def replace_permissions_username(holder): |
320 | 32454501 | Sofia Papagiannaki | try:
|
321 | 32454501 | Sofia Papagiannaki | # check first for a group permission
|
322 | 32454501 | Sofia Papagiannaki | account, group = holder.split(':')
|
323 | 32454501 | Sofia Papagiannaki | except ValueError: |
324 | 32454501 | Sofia Papagiannaki | return retrieve_uuid(holder)
|
325 | 32454501 | Sofia Papagiannaki | else:
|
326 | 32454501 | Sofia Papagiannaki | return ':'.join([retrieve_uuid(account), group]) |
327 | 32454501 | Sofia Papagiannaki | |
328 | 32454501 | Sofia Papagiannaki | def replace_permissions_uuid(holder): |
329 | 32454501 | Sofia Papagiannaki | try:
|
330 | 32454501 | Sofia Papagiannaki | # check first for a group permission
|
331 | 32454501 | Sofia Papagiannaki | account, group = holder.split(':')
|
332 | 32454501 | Sofia Papagiannaki | except ValueError: |
333 | 32454501 | Sofia Papagiannaki | return retrieve_username(holder)
|
334 | 32454501 | Sofia Papagiannaki | else:
|
335 | 32454501 | Sofia Papagiannaki | return ':'.join([retrieve_username(account), group]) |
336 | 32454501 | Sofia Papagiannaki | |
337 | 067cf1fc | Antony Chazapis | def update_sharing_meta(request, permissions, v_account, v_container, v_object, meta): |
338 | cca6c617 | Antony Chazapis | if permissions is None: |
339 | cca6c617 | Antony Chazapis | return
|
340 | 067cf1fc | Antony Chazapis | allowed, perm_path, perms = permissions |
341 | cca6c617 | Antony Chazapis | if len(perms) == 0: |
342 | cca6c617 | Antony Chazapis | return
|
343 | 32454501 | Sofia Papagiannaki | |
344 | 32454501 | Sofia Papagiannaki | perms['read'] = [replace_permissions_uuid(x) for x in perms.get('read', [])] |
345 | 32454501 | Sofia Papagiannaki | perms['write'] = \
|
346 | 32454501 | Sofia Papagiannaki | [replace_permissions_uuid(x) for x in perms.get('write', [])] |
347 | 32454501 | Sofia Papagiannaki | |
348 | 3436eeb0 | Antony Chazapis | ret = [] |
349 | 32454501 | Sofia Papagiannaki | |
350 | cca6c617 | Antony Chazapis | r = ','.join(perms.get('read', [])) |
351 | 3436eeb0 | Antony Chazapis | if r:
|
352 | 3436eeb0 | Antony Chazapis | ret.append('read=' + r)
|
353 | cca6c617 | Antony Chazapis | w = ','.join(perms.get('write', [])) |
354 | 3436eeb0 | Antony Chazapis | if w:
|
355 | 3436eeb0 | Antony Chazapis | ret.append('write=' + w)
|
356 | cca6c617 | Antony Chazapis | meta['X-Object-Sharing'] = '; '.join(ret) |
357 | cca6c617 | Antony Chazapis | if '/'.join((v_account, v_container, v_object)) != perm_path: |
358 | cca6c617 | Antony Chazapis | meta['X-Object-Shared-By'] = perm_path
|
359 | 61efb530 | Antony Chazapis | if request.user_uniq != v_account:
|
360 | 067cf1fc | Antony Chazapis | meta['X-Object-Allowed-To'] = allowed
|
361 | 3436eeb0 | Antony Chazapis | |
362 | 2715ade4 | Sofia Papagiannaki | |
363 | e0f916bb | Antony Chazapis | def update_public_meta(public, meta): |
364 | e0f916bb | Antony Chazapis | if not public: |
365 | e0f916bb | Antony Chazapis | return
|
366 | bb4eafc6 | Antony Chazapis | meta['X-Object-Public'] = '/public/' + encode_url(public) |
367 | e0f916bb | Antony Chazapis | |
368 | 2715ade4 | Sofia Papagiannaki | |
369 | b956618e | Antony Chazapis | def validate_modification_preconditions(request, meta): |
370 | 58a6c894 | Antony Chazapis | """Check that the modified timestamp conforms with the preconditions set."""
|
371 | 2715ade4 | Sofia Papagiannaki | |
372 | 22dab079 | Antony Chazapis | if 'modified' not in meta: |
373 | 2715ade4 | Sofia Papagiannaki | return # TODO: Always return? |
374 | 2715ade4 | Sofia Papagiannaki | |
375 | b956618e | Antony Chazapis | if_modified_since = request.META.get('HTTP_IF_MODIFIED_SINCE')
|
376 | b956618e | Antony Chazapis | if if_modified_since is not None: |
377 | b956618e | Antony Chazapis | if_modified_since = parse_http_date_safe(if_modified_since) |
378 | 22dab079 | Antony Chazapis | if if_modified_since is not None and int(meta['modified']) <= if_modified_since: |
379 | 3e5d2f38 | Antony Chazapis | raise NotModified('Resource has not been modified') |
380 | 2715ade4 | Sofia Papagiannaki | |
381 | b956618e | Antony Chazapis | if_unmodified_since = request.META.get('HTTP_IF_UNMODIFIED_SINCE')
|
382 | b956618e | Antony Chazapis | if if_unmodified_since is not None: |
383 | b956618e | Antony Chazapis | if_unmodified_since = parse_http_date_safe(if_unmodified_since) |
384 | 22dab079 | Antony Chazapis | if if_unmodified_since is not None and int(meta['modified']) > if_unmodified_since: |
385 | 3e5d2f38 | Antony Chazapis | raise PreconditionFailed('Resource has been modified') |
386 | b956618e | Antony Chazapis | |
387 | 2715ade4 | Sofia Papagiannaki | |
388 | 22dab079 | Antony Chazapis | def validate_matching_preconditions(request, meta): |
389 | 58a6c894 | Antony Chazapis | """Check that the ETag conforms with the preconditions set."""
|
390 | 2715ade4 | Sofia Papagiannaki | |
391 | 33b4e4a6 | Antony Chazapis | etag = meta['checksum']
|
392 | 33b4e4a6 | Antony Chazapis | if not etag: |
393 | 33b4e4a6 | Antony Chazapis | etag = None
|
394 | 2715ade4 | Sofia Papagiannaki | |
395 | 22dab079 | Antony Chazapis | if_match = request.META.get('HTTP_IF_MATCH')
|
396 | a8326bef | Antony Chazapis | if if_match is not None: |
397 | 4a1c29ea | Antony Chazapis | if etag is None: |
398 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource does not exist') |
399 | 4a1c29ea | Antony Chazapis | if if_match != '*' and etag not in [x.lower() for x in parse_etags(if_match)]: |
400 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource ETag does not match') |
401 | 2715ade4 | Sofia Papagiannaki | |
402 | 22dab079 | Antony Chazapis | if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
|
403 | 22dab079 | Antony Chazapis | if if_none_match is not None: |
404 | a8326bef | Antony Chazapis | # TODO: If this passes, must ignore If-Modified-Since header.
|
405 | 4a1c29ea | Antony Chazapis | if etag is not None: |
406 | 4a1c29ea | Antony Chazapis | if if_none_match == '*' or etag in [x.lower() for x in parse_etags(if_none_match)]: |
407 | a8326bef | Antony Chazapis | # TODO: Continue if an If-Modified-Since header is present.
|
408 | a8326bef | Antony Chazapis | if request.method in ('HEAD', 'GET'): |
409 | a8326bef | Antony Chazapis | raise NotModified('Resource ETag matches') |
410 | a8326bef | Antony Chazapis | raise PreconditionFailed('Resource exists or ETag matches') |
411 | 22dab079 | Antony Chazapis | |
412 | 2715ade4 | Sofia Papagiannaki | |
413 | 83dd59c5 | Antony Chazapis | def split_container_object_string(s): |
414 | 6d817842 | Antony Chazapis | if not len(s) > 0 or s[0] != '/': |
415 | 6d817842 | Antony Chazapis | raise ValueError |
416 | 6d817842 | Antony Chazapis | s = s[1:]
|
417 | 8cb45c13 | Antony Chazapis | pos = s.find('/')
|
418 | 22d7b01e | Antony Chazapis | if pos == -1 or pos == len(s) - 1: |
419 | 83dd59c5 | Antony Chazapis | raise ValueError |
420 | 8cb45c13 | Antony Chazapis | return s[:pos], s[(pos + 1):] |
421 | 83dd59c5 | Antony Chazapis | |
422 | 2715ade4 | Sofia Papagiannaki | |
423 | 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): |
424 | 58a6c894 | Antony Chazapis | """Copy or move an object."""
|
425 | 2715ade4 | Sofia Papagiannaki | |
426 | 53cff70c | Antony Chazapis | if 'ignore_content_type' in request.GET and 'CONTENT_TYPE' in request.META: |
427 | 53cff70c | Antony Chazapis | del(request.META['CONTENT_TYPE']) |
428 | 66ce2ca5 | Antony Chazapis | content_type, meta, permissions, public = get_object_headers(request) |
429 | 79bb41b7 | Antony Chazapis | src_version = request.META.get('HTTP_X_SOURCE_VERSION')
|
430 | b956618e | Antony Chazapis | try:
|
431 | b956618e | Antony Chazapis | if move:
|
432 | 2715ade4 | Sofia Papagiannaki | version_id = request.backend.move_object( |
433 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, src_account, src_container, src_name, |
434 | 2715ade4 | Sofia Papagiannaki | dest_account, dest_container, dest_name, |
435 | 2715ade4 | Sofia Papagiannaki | content_type, 'pithos', meta, False, permissions, delimiter) |
436 | b956618e | Antony Chazapis | else:
|
437 | 2715ade4 | Sofia Papagiannaki | version_id = request.backend.copy_object( |
438 | 2715ade4 | Sofia Papagiannaki | request.user_uniq, src_account, src_container, src_name, |
439 | 2715ade4 | Sofia Papagiannaki | dest_account, dest_container, dest_name, |
440 | 2715ade4 | Sofia Papagiannaki | content_type, 'pithos', meta, False, permissions, src_version, delimiter) |
441 | cca6c617 | Antony Chazapis | except NotAllowedError:
|
442 | 297513ba | Antony Chazapis | raise Forbidden('Not allowed') |
443 | 7efc9f86 | Sofia Papagiannaki | except (ItemNotExists, VersionNotExists):
|
444 | b956618e | Antony Chazapis | raise ItemNotFound('Container or object does not exist') |
445 | 3436eeb0 | Antony Chazapis | except ValueError: |
446 | 3436eeb0 | Antony Chazapis | raise BadRequest('Invalid sharing header') |
447 | 5df6c6d1 | Antony Chazapis | except QuotaError:
|
448 | 5df6c6d1 | Antony Chazapis | raise RequestEntityTooLarge('Quota exceeded') |
449 | e0f916bb | Antony Chazapis | if public is not None: |
450 | e0f916bb | Antony Chazapis | try:
|
451 | 61efb530 | Antony Chazapis | request.backend.update_object_public(request.user_uniq, dest_account, dest_container, dest_name, public) |
452 | e0f916bb | Antony Chazapis | except NotAllowedError:
|
453 | 297513ba | Antony Chazapis | raise Forbidden('Not allowed') |
454 | 7efc9f86 | Sofia Papagiannaki | except ItemNotExists:
|
455 | e0f916bb | Antony Chazapis | raise ItemNotFound('Object does not exist') |
456 | 7dd293a0 | Antony Chazapis | return version_id
|
457 | b956618e | Antony Chazapis | |
458 | 2715ade4 | Sofia Papagiannaki | |
459 | 1495b972 | Antony Chazapis | def get_int_parameter(p): |
460 | 83dd59c5 | Antony Chazapis | if p is not None: |
461 | 58a6c894 | Antony Chazapis | try:
|
462 | 83dd59c5 | Antony Chazapis | p = int(p)
|
463 | 58a6c894 | Antony Chazapis | except ValueError: |
464 | 58a6c894 | Antony Chazapis | return None |
465 | 83dd59c5 | Antony Chazapis | if p < 0: |
466 | 58a6c894 | Antony Chazapis | return None |
467 | 83dd59c5 | Antony Chazapis | return p
|
468 | 58a6c894 | Antony Chazapis | |
469 | 2715ade4 | Sofia Papagiannaki | |
470 | 22dab079 | Antony Chazapis | def get_content_length(request): |
471 | 1495b972 | Antony Chazapis | content_length = get_int_parameter(request.META.get('CONTENT_LENGTH'))
|
472 | 1495b972 | Antony Chazapis | if content_length is None: |
473 | 1495b972 | Antony Chazapis | raise LengthRequired('Missing or invalid Content-Length header') |
474 | 22dab079 | Antony Chazapis | return content_length
|
475 | 22dab079 | Antony Chazapis | |
476 | 2715ade4 | Sofia Papagiannaki | |
477 | 22dab079 | Antony Chazapis | def get_range(request, size): |
478 | 58a6c894 | Antony Chazapis | """Parse a Range header from the request.
|
479 | 2715ade4 | Sofia Papagiannaki |
|
480 | 22dab079 | Antony Chazapis | Either returns None, when the header is not existent or should be ignored,
|
481 | 22dab079 | Antony Chazapis | or a list of (offset, length) tuples - should be further checked.
|
482 | b956618e | Antony Chazapis | """
|
483 | 2715ade4 | Sofia Papagiannaki | |
484 | 22dab079 | Antony Chazapis | ranges = request.META.get('HTTP_RANGE', '').replace(' ', '') |
485 | 22dab079 | Antony Chazapis | if not ranges.startswith('bytes='): |
486 | b956618e | Antony Chazapis | return None |
487 | 2715ade4 | Sofia Papagiannaki | |
488 | 22dab079 | Antony Chazapis | ret = [] |
489 | 22dab079 | Antony Chazapis | for r in (x.strip() for x in ranges[6:].split(',')): |
490 | 22dab079 | Antony Chazapis | p = re.compile('^(?P<offset>\d*)-(?P<upto>\d*)$')
|
491 | 22dab079 | Antony Chazapis | m = p.match(r) |
492 | 22dab079 | Antony Chazapis | if not m: |
493 | 22dab079 | Antony Chazapis | return None |
494 | 22dab079 | Antony Chazapis | offset = m.group('offset')
|
495 | 22dab079 | Antony Chazapis | upto = m.group('upto')
|
496 | 22dab079 | Antony Chazapis | if offset == '' and upto == '': |
497 | b956618e | Antony Chazapis | return None |
498 | 2715ade4 | Sofia Papagiannaki | |
499 | 22dab079 | Antony Chazapis | if offset != '': |
500 | 22dab079 | Antony Chazapis | offset = int(offset)
|
501 | 22dab079 | Antony Chazapis | if upto != '': |
502 | b956618e | Antony Chazapis | upto = int(upto)
|
503 | 22dab079 | Antony Chazapis | if offset > upto:
|
504 | 22dab079 | Antony Chazapis | return None |
505 | 22dab079 | Antony Chazapis | ret.append((offset, upto - offset + 1))
|
506 | 22dab079 | Antony Chazapis | else:
|
507 | 22dab079 | Antony Chazapis | ret.append((offset, size - offset)) |
508 | b956618e | Antony Chazapis | else:
|
509 | 22dab079 | Antony Chazapis | length = int(upto)
|
510 | 22dab079 | Antony Chazapis | ret.append((size - length, length)) |
511 | 2715ade4 | Sofia Papagiannaki | |
512 | 22dab079 | Antony Chazapis | return ret
|
513 | 22dab079 | Antony Chazapis | |
514 | 2715ade4 | Sofia Papagiannaki | |
515 | 22dab079 | Antony Chazapis | def get_content_range(request): |
516 | 58a6c894 | Antony Chazapis | """Parse a Content-Range header from the request.
|
517 | 2715ade4 | Sofia Papagiannaki |
|
518 | 22dab079 | Antony Chazapis | Either returns None, when the header is not existent or should be ignored,
|
519 | 22dab079 | Antony Chazapis | or an (offset, length, total) tuple - check as length, total may be None.
|
520 | 22dab079 | Antony Chazapis | Returns (None, None, None) if the provided range is '*/*'.
|
521 | 22dab079 | Antony Chazapis | """
|
522 | 2715ade4 | Sofia Papagiannaki | |
523 | 22dab079 | Antony Chazapis | ranges = request.META.get('HTTP_CONTENT_RANGE', '') |
524 | 22dab079 | Antony Chazapis | if not ranges: |
525 | 22dab079 | Antony Chazapis | return None |
526 | 2715ade4 | Sofia Papagiannaki | |
527 | 22dab079 | Antony Chazapis | p = re.compile('^bytes (?P<offset>\d+)-(?P<upto>\d*)/(?P<total>(\d+|\*))$')
|
528 | 22dab079 | Antony Chazapis | m = p.match(ranges) |
529 | 22dab079 | Antony Chazapis | if not m: |
530 | 22dab079 | Antony Chazapis | if ranges == 'bytes */*': |
531 | 22dab079 | Antony Chazapis | return (None, None, None) |
532 | 22dab079 | Antony Chazapis | return None |
533 | 22dab079 | Antony Chazapis | offset = int(m.group('offset')) |
534 | 22dab079 | Antony Chazapis | upto = m.group('upto')
|
535 | 22dab079 | Antony Chazapis | total = m.group('total')
|
536 | 22dab079 | Antony Chazapis | if upto != '': |
537 | 22dab079 | Antony Chazapis | upto = int(upto)
|
538 | b956618e | Antony Chazapis | else:
|
539 | 22dab079 | Antony Chazapis | upto = None
|
540 | 22dab079 | Antony Chazapis | if total != '*': |
541 | 22dab079 | Antony Chazapis | total = int(total)
|
542 | 22dab079 | Antony Chazapis | else:
|
543 | 22dab079 | Antony Chazapis | total = None
|
544 | 70e526a0 | Antony Chazapis | if (upto is not None and offset > upto) or \ |
545 | 70e526a0 | Antony Chazapis | (total is not None and offset >= total) or \ |
546 | 2715ade4 | Sofia Papagiannaki | (total is not None and upto is not None and upto >= total): |
547 | 22dab079 | Antony Chazapis | return None |
548 | 2715ade4 | Sofia Papagiannaki | |
549 | 70e526a0 | Antony Chazapis | if upto is None: |
550 | 22dab079 | Antony Chazapis | length = None
|
551 | 22dab079 | Antony Chazapis | else:
|
552 | 22dab079 | Antony Chazapis | length = upto - offset + 1
|
553 | 22dab079 | Antony Chazapis | return (offset, length, total)
|
554 | b956618e | Antony Chazapis | |
555 | 2715ade4 | Sofia Papagiannaki | |
556 | 3436eeb0 | Antony Chazapis | def get_sharing(request): |
557 | 3436eeb0 | Antony Chazapis | """Parse an X-Object-Sharing header from the request.
|
558 | 2715ade4 | Sofia Papagiannaki |
|
559 | 3436eeb0 | Antony Chazapis | Raises BadRequest on error.
|
560 | 3436eeb0 | Antony Chazapis | """
|
561 | 2715ade4 | Sofia Papagiannaki | |
562 | 3436eeb0 | Antony Chazapis | permissions = request.META.get('HTTP_X_OBJECT_SHARING')
|
563 | cca6c617 | Antony Chazapis | if permissions is None: |
564 | 3436eeb0 | Antony Chazapis | return None |
565 | 2715ade4 | Sofia Papagiannaki | |
566 | 0a7f1671 | Antony Chazapis | # TODO: Document or remove '~' replacing.
|
567 | 0a7f1671 | Antony Chazapis | permissions = permissions.replace('~', '') |
568 | 2715ade4 | Sofia Papagiannaki | |
569 | 3436eeb0 | Antony Chazapis | ret = {} |
570 | cca6c617 | Antony Chazapis | permissions = permissions.replace(' ', '') |
571 | cca6c617 | Antony Chazapis | if permissions == '': |
572 | cca6c617 | Antony Chazapis | return ret
|
573 | cca6c617 | Antony Chazapis | for perm in (x for x in permissions.split(';')): |
574 | cca6c617 | Antony Chazapis | if perm.startswith('read='): |
575 | 2715ade4 | Sofia Papagiannaki | ret['read'] = list(set( |
576 | 2715ade4 | Sofia Papagiannaki | [v.replace(' ', '').lower() for v in perm[5:].split(',')])) |
577 | 02c0c3fa | Antony Chazapis | if '' in ret['read']: |
578 | 02c0c3fa | Antony Chazapis | ret['read'].remove('') |
579 | e8886082 | Antony Chazapis | if '*' in ret['read']: |
580 | e8886082 | Antony Chazapis | ret['read'] = ['*'] |
581 | 3436eeb0 | Antony Chazapis | if len(ret['read']) == 0: |
582 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
583 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: invalid length')
|
584 | 3436eeb0 | Antony Chazapis | elif perm.startswith('write='): |
585 | 2715ade4 | Sofia Papagiannaki | ret['write'] = list(set( |
586 | 2715ade4 | Sofia Papagiannaki | [v.replace(' ', '').lower() for v in perm[6:].split(',')])) |
587 | 02c0c3fa | Antony Chazapis | if '' in ret['write']: |
588 | 02c0c3fa | Antony Chazapis | ret['write'].remove('') |
589 | e8886082 | Antony Chazapis | if '*' in ret['write']: |
590 | e8886082 | Antony Chazapis | ret['write'] = ['*'] |
591 | 3436eeb0 | Antony Chazapis | if len(ret['write']) == 0: |
592 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
593 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: invalid length')
|
594 | 3436eeb0 | Antony Chazapis | else:
|
595 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
596 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: missing prefix')
|
597 | 32454501 | Sofia Papagiannaki | |
598 | 32454501 | Sofia Papagiannaki | # replace username with uuid
|
599 | 32454501 | Sofia Papagiannaki | try:
|
600 | 32454501 | Sofia Papagiannaki | ret['read'] = \
|
601 | 32454501 | Sofia Papagiannaki | [replace_permissions_username(x) for x in ret.get('read', [])] |
602 | 32454501 | Sofia Papagiannaki | ret['write'] = \
|
603 | 32454501 | Sofia Papagiannaki | [replace_permissions_username(x) for x in ret.get('write', [])] |
604 | 874cddc7 | Sofia Papagiannaki | except ItemNotExists, e:
|
605 | 32454501 | Sofia Papagiannaki | raise BadRequest(
|
606 | 32454501 | Sofia Papagiannaki | 'Bad X-Object-Sharing header value: unknown account: %s' % e)
|
607 | 2715ade4 | Sofia Papagiannaki | |
608 | 21a8a6ff | Antony Chazapis | # Keep duplicates only in write list.
|
609 | 2715ade4 | Sofia Papagiannaki | dups = [x for x in ret.get( |
610 | 2715ade4 | Sofia Papagiannaki | 'read', []) if x in ret.get('write', []) and x != '*'] |
611 | 21a8a6ff | Antony Chazapis | if dups:
|
612 | 21a8a6ff | Antony Chazapis | for x in dups: |
613 | 21a8a6ff | Antony Chazapis | ret['read'].remove(x)
|
614 | 21a8a6ff | Antony Chazapis | if len(ret['read']) == 0: |
615 | 21a8a6ff | Antony Chazapis | del(ret['read']) |
616 | 2715ade4 | Sofia Papagiannaki | |
617 | 3436eeb0 | Antony Chazapis | return ret
|
618 | 3436eeb0 | Antony Chazapis | |
619 | 2715ade4 | Sofia Papagiannaki | |
620 | 3ab38c43 | Antony Chazapis | def get_public(request): |
621 | 3ab38c43 | Antony Chazapis | """Parse an X-Object-Public header from the request.
|
622 | 2715ade4 | Sofia Papagiannaki |
|
623 | 3ab38c43 | Antony Chazapis | Raises BadRequest on error.
|
624 | 3ab38c43 | Antony Chazapis | """
|
625 | 2715ade4 | Sofia Papagiannaki | |
626 | 3ab38c43 | Antony Chazapis | public = request.META.get('HTTP_X_OBJECT_PUBLIC')
|
627 | 3ab38c43 | Antony Chazapis | if public is None: |
628 | 3ab38c43 | Antony Chazapis | return None |
629 | 2715ade4 | Sofia Papagiannaki | |
630 | 3ab38c43 | Antony Chazapis | public = public.replace(' ', '').lower() |
631 | 3ab38c43 | Antony Chazapis | if public == 'true': |
632 | 3ab38c43 | Antony Chazapis | return True |
633 | 3ab38c43 | Antony Chazapis | elif public == 'false' or public == '': |
634 | 3ab38c43 | Antony Chazapis | return False |
635 | 3ab38c43 | Antony Chazapis | raise BadRequest('Bad X-Object-Public header value') |
636 | 3ab38c43 | Antony Chazapis | |
637 | 2715ade4 | Sofia Papagiannaki | |
638 | b956618e | Antony Chazapis | def raw_input_socket(request): |
639 | 58a6c894 | Antony Chazapis | """Return the socket for reading the rest of the request."""
|
640 | 2715ade4 | Sofia Papagiannaki | |
641 | b956618e | Antony Chazapis | server_software = request.META.get('SERVER_SOFTWARE')
|
642 | fc1b2a75 | Antony Chazapis | if server_software and server_software.startswith('mod_python'): |
643 | b956618e | Antony Chazapis | return request._req
|
644 | fc1b2a75 | Antony Chazapis | if 'wsgi.input' in request.environ: |
645 | fc1b2a75 | Antony Chazapis | return request.environ['wsgi.input'] |
646 | 08de868d | Antony Chazapis | raise NotImplemented('Unknown server software') |
647 | b956618e | Antony Chazapis | |
648 | 2715ade4 | Sofia Papagiannaki | MAX_UPLOAD_SIZE = 5 * (1024 * 1024 * 1024) # 5GB |
649 | 2715ade4 | Sofia Papagiannaki | |
650 | b956618e | Antony Chazapis | |
651 | c032f34d | Antony Chazapis | def socket_read_iterator(request, length=0, blocksize=4096): |
652 | 58a6c894 | Antony Chazapis | """Return a maximum of blocksize data read from the socket in each iteration.
|
653 | 2715ade4 | Sofia Papagiannaki |
|
654 | 22dab079 | Antony Chazapis | Read up to 'length'. If 'length' is negative, will attempt a chunked read.
|
655 | b956618e | Antony Chazapis | The maximum ammount of data read is controlled by MAX_UPLOAD_SIZE.
|
656 | b956618e | Antony Chazapis | """
|
657 | 2715ade4 | Sofia Papagiannaki | |
658 | c032f34d | Antony Chazapis | sock = raw_input_socket(request) |
659 | 2715ade4 | Sofia Papagiannaki | if length < 0: # Chunked transfers |
660 | c032f34d | Antony Chazapis | # Small version (server does the dechunking).
|
661 | 032dc768 | Antony Chazapis | if request.environ.get('mod_wsgi.input_chunked', None) or request.META['SERVER_SOFTWARE'].startswith('gunicorn'): |
662 | c032f34d | Antony Chazapis | while length < MAX_UPLOAD_SIZE:
|
663 | c032f34d | Antony Chazapis | data = sock.read(blocksize) |
664 | c032f34d | Antony Chazapis | if data == '': |
665 | c032f34d | Antony Chazapis | return
|
666 | c032f34d | Antony Chazapis | yield data
|
667 | c032f34d | Antony Chazapis | raise BadRequest('Maximum size is reached') |
668 | 2715ade4 | Sofia Papagiannaki | |
669 | c032f34d | Antony Chazapis | # Long version (do the dechunking).
|
670 | 22dab079 | Antony Chazapis | data = ''
|
671 | b956618e | Antony Chazapis | while length < MAX_UPLOAD_SIZE:
|
672 | 22dab079 | Antony Chazapis | # Get chunk size.
|
673 | 22dab079 | Antony Chazapis | if hasattr(sock, 'readline'): |
674 | 22dab079 | Antony Chazapis | chunk_length = sock.readline() |
675 | 22dab079 | Antony Chazapis | else:
|
676 | 22dab079 | Antony Chazapis | chunk_length = ''
|
677 | 22dab079 | Antony Chazapis | while chunk_length[-1:] != '\n': |
678 | 22dab079 | Antony Chazapis | chunk_length += sock.read(1)
|
679 | 22dab079 | Antony Chazapis | chunk_length.strip() |
680 | b956618e | Antony Chazapis | pos = chunk_length.find(';')
|
681 | b956618e | Antony Chazapis | if pos >= 0: |
682 | b956618e | Antony Chazapis | chunk_length = chunk_length[:pos] |
683 | b956618e | Antony Chazapis | try:
|
684 | b956618e | Antony Chazapis | chunk_length = int(chunk_length, 16) |
685 | b956618e | Antony Chazapis | except Exception, e: |
686 | 2715ade4 | Sofia Papagiannaki | raise BadRequest('Bad chunk size') |
687 | 2715ade4 | Sofia Papagiannaki | # TODO: Change to something more appropriate.
|
688 | 22dab079 | Antony Chazapis | # Check if done.
|
689 | b956618e | Antony Chazapis | if chunk_length == 0: |
690 | 22dab079 | Antony Chazapis | if len(data) > 0: |
691 | 22dab079 | Antony Chazapis | yield data
|
692 | b956618e | Antony Chazapis | return
|
693 | 22dab079 | Antony Chazapis | # Get the actual data.
|
694 | b956618e | Antony Chazapis | while chunk_length > 0: |
695 | 22dab079 | Antony Chazapis | chunk = sock.read(min(chunk_length, blocksize))
|
696 | 22dab079 | Antony Chazapis | chunk_length -= len(chunk)
|
697 | 623a0cf4 | Sofia Papagiannaki | if length > 0: |
698 | 623a0cf4 | Sofia Papagiannaki | length += len(chunk)
|
699 | 22dab079 | Antony Chazapis | data += chunk |
700 | 22dab079 | Antony Chazapis | if len(data) >= blocksize: |
701 | 22dab079 | Antony Chazapis | ret = data[:blocksize] |
702 | 22dab079 | Antony Chazapis | data = data[blocksize:] |
703 | 22dab079 | Antony Chazapis | yield ret
|
704 | 2715ade4 | Sofia Papagiannaki | sock.read(2) # CRLF |
705 | 32a437b1 | Sofia Papagiannaki | raise BadRequest('Maximum size is reached') |
706 | b956618e | Antony Chazapis | else:
|
707 | b956618e | Antony Chazapis | if length > MAX_UPLOAD_SIZE:
|
708 | 32a437b1 | Sofia Papagiannaki | raise BadRequest('Maximum size is reached') |
709 | b956618e | Antony Chazapis | while length > 0: |
710 | b956618e | Antony Chazapis | data = sock.read(min(length, blocksize))
|
711 | 7b25e082 | Antony Chazapis | if not data: |
712 | 7b25e082 | Antony Chazapis | raise BadRequest()
|
713 | b956618e | Antony Chazapis | length -= len(data)
|
714 | b956618e | Antony Chazapis | yield data
|
715 | b956618e | Antony Chazapis | |
716 | 2715ade4 | Sofia Papagiannaki | |
717 | 817890f2 | Antony Chazapis | class SaveToBackendHandler(FileUploadHandler): |
718 | 817890f2 | Antony Chazapis | """Handle a file from an HTML form the django way."""
|
719 | 2715ade4 | Sofia Papagiannaki | |
720 | 817890f2 | Antony Chazapis | def __init__(self, request=None): |
721 | 817890f2 | Antony Chazapis | super(SaveToBackendHandler, self).__init__(request) |
722 | 817890f2 | Antony Chazapis | self.backend = request.backend
|
723 | 2715ade4 | Sofia Papagiannaki | |
724 | 817890f2 | Antony Chazapis | def put_data(self, length): |
725 | 817890f2 | Antony Chazapis | if len(self.data) >= length: |
726 | 817890f2 | Antony Chazapis | block = self.data[:length]
|
727 | 817890f2 | Antony Chazapis | self.file.hashmap.append(self.backend.put_block(block)) |
728 | 817890f2 | Antony Chazapis | self.md5.update(block)
|
729 | 817890f2 | Antony Chazapis | self.data = self.data[length:] |
730 | 2715ade4 | Sofia Papagiannaki | |
731 | 817890f2 | Antony Chazapis | def new_file(self, field_name, file_name, content_type, content_length, charset=None): |
732 | 2715ade4 | Sofia Papagiannaki | self.md5 = hashlib.md5()
|
733 | 817890f2 | Antony Chazapis | self.data = '' |
734 | 2715ade4 | Sofia Papagiannaki | self.file = UploadedFile(
|
735 | 2715ade4 | Sofia Papagiannaki | name=file_name, content_type=content_type, charset=charset) |
736 | 817890f2 | Antony Chazapis | self.file.size = 0 |
737 | 817890f2 | Antony Chazapis | self.file.hashmap = []
|
738 | 2715ade4 | Sofia Papagiannaki | |
739 | 817890f2 | Antony Chazapis | def receive_data_chunk(self, raw_data, start): |
740 | 817890f2 | Antony Chazapis | self.data += raw_data
|
741 | 817890f2 | Antony Chazapis | self.file.size += len(raw_data) |
742 | 817890f2 | Antony Chazapis | self.put_data(self.request.backend.block_size) |
743 | 817890f2 | Antony Chazapis | return None |
744 | 2715ade4 | Sofia Papagiannaki | |
745 | 817890f2 | Antony Chazapis | def file_complete(self, file_size): |
746 | 817890f2 | Antony Chazapis | l = len(self.data) |
747 | 817890f2 | Antony Chazapis | if l > 0: |
748 | 817890f2 | Antony Chazapis | self.put_data(l)
|
749 | 817890f2 | Antony Chazapis | self.file.etag = self.md5.hexdigest().lower() |
750 | 817890f2 | Antony Chazapis | return self.file |
751 | 817890f2 | Antony Chazapis | |
752 | 2715ade4 | Sofia Papagiannaki | |
753 | 22dab079 | Antony Chazapis | class ObjectWrapper(object): |
754 | 58a6c894 | Antony Chazapis | """Return the object's data block-per-block in each iteration.
|
755 | 2715ade4 | Sofia Papagiannaki |
|
756 | 22dab079 | Antony Chazapis | Read from the object using the offset and length provided in each entry of the range list.
|
757 | 22dab079 | Antony Chazapis | """
|
758 | 2715ade4 | Sofia Papagiannaki | |
759 | 39593b2b | Giorgos Verigakis | def __init__(self, backend, ranges, sizes, hashmaps, boundary): |
760 | 39593b2b | Giorgos Verigakis | self.backend = backend
|
761 | 22dab079 | Antony Chazapis | self.ranges = ranges
|
762 | 8cb45c13 | Antony Chazapis | self.sizes = sizes
|
763 | 8cb45c13 | Antony Chazapis | self.hashmaps = hashmaps
|
764 | 22dab079 | Antony Chazapis | self.boundary = boundary
|
765 | 8cb45c13 | Antony Chazapis | self.size = sum(self.sizes) |
766 | 2715ade4 | Sofia Papagiannaki | |
767 | 8cb45c13 | Antony Chazapis | self.file_index = 0 |
768 | 8cb45c13 | Antony Chazapis | self.block_index = 0 |
769 | 8cb45c13 | Antony Chazapis | self.block_hash = -1 |
770 | 22dab079 | Antony Chazapis | self.block = '' |
771 | 2715ade4 | Sofia Papagiannaki | |
772 | 22dab079 | Antony Chazapis | self.range_index = -1 |
773 | 22dab079 | Antony Chazapis | self.offset, self.length = self.ranges[0] |
774 | 2715ade4 | Sofia Papagiannaki | |
775 | 22dab079 | Antony Chazapis | def __iter__(self): |
776 | 22dab079 | Antony Chazapis | return self |
777 | 2715ade4 | Sofia Papagiannaki | |
778 | 22dab079 | Antony Chazapis | def part_iterator(self): |
779 | 22dab079 | Antony Chazapis | if self.length > 0: |
780 | 8cb45c13 | Antony Chazapis | # Get the file for the current offset.
|
781 | 8cb45c13 | Antony Chazapis | file_size = self.sizes[self.file_index] |
782 | 8cb45c13 | Antony Chazapis | while self.offset >= file_size: |
783 | 8cb45c13 | Antony Chazapis | self.offset -= file_size
|
784 | 8cb45c13 | Antony Chazapis | self.file_index += 1 |
785 | 8cb45c13 | Antony Chazapis | file_size = self.sizes[self.file_index] |
786 | 2715ade4 | Sofia Papagiannaki | |
787 | 8cb45c13 | Antony Chazapis | # Get the block for the current position.
|
788 | 39593b2b | Giorgos Verigakis | self.block_index = int(self.offset / self.backend.block_size) |
789 | 8cb45c13 | Antony Chazapis | if self.block_hash != self.hashmaps[self.file_index][self.block_index]: |
790 | 2715ade4 | Sofia Papagiannaki | self.block_hash = self.hashmaps[ |
791 | 2715ade4 | Sofia Papagiannaki | self.file_index][self.block_index] |
792 | 22dab079 | Antony Chazapis | try:
|
793 | 39593b2b | Giorgos Verigakis | self.block = self.backend.get_block(self.block_hash) |
794 | 7efc9f86 | Sofia Papagiannaki | except ItemNotExists:
|
795 | 22dab079 | Antony Chazapis | raise ItemNotFound('Block does not exist') |
796 | 2715ade4 | Sofia Papagiannaki | |
797 | 22dab079 | Antony Chazapis | # Get the data from the block.
|
798 | 39593b2b | Giorgos Verigakis | bo = self.offset % self.backend.block_size |
799 | c9865fe1 | Antony Chazapis | bs = self.backend.block_size
|
800 | 45cf0bc8 | Antony Chazapis | if (self.block_index == len(self.hashmaps[self.file_index]) - 1 and |
801 | 2715ade4 | Sofia Papagiannaki | self.sizes[self.file_index] % self.backend.block_size): |
802 | c9865fe1 | Antony Chazapis | bs = self.sizes[self.file_index] % self.backend.block_size |
803 | c9865fe1 | Antony Chazapis | bl = min(self.length, bs - bo) |
804 | 22dab079 | Antony Chazapis | data = self.block[bo:bo + bl]
|
805 | 22dab079 | Antony Chazapis | self.offset += bl
|
806 | 22dab079 | Antony Chazapis | self.length -= bl
|
807 | 22dab079 | Antony Chazapis | return data
|
808 | 22dab079 | Antony Chazapis | else:
|
809 | 22dab079 | Antony Chazapis | raise StopIteration |
810 | 2715ade4 | Sofia Papagiannaki | |
811 | 22dab079 | Antony Chazapis | def next(self): |
812 | 22dab079 | Antony Chazapis | if len(self.ranges) == 1: |
813 | 22dab079 | Antony Chazapis | return self.part_iterator() |
814 | 22dab079 | Antony Chazapis | if self.range_index == len(self.ranges): |
815 | 22dab079 | Antony Chazapis | raise StopIteration |
816 | 22dab079 | Antony Chazapis | try:
|
817 | 22dab079 | Antony Chazapis | if self.range_index == -1: |
818 | 22dab079 | Antony Chazapis | raise StopIteration |
819 | 22dab079 | Antony Chazapis | return self.part_iterator() |
820 | 22dab079 | Antony Chazapis | except StopIteration: |
821 | 22dab079 | Antony Chazapis | self.range_index += 1 |
822 | 22dab079 | Antony Chazapis | out = [] |
823 | 22dab079 | Antony Chazapis | if self.range_index < len(self.ranges): |
824 | 22dab079 | Antony Chazapis | # Part header.
|
825 | 22dab079 | Antony Chazapis | self.offset, self.length = self.ranges[self.range_index] |
826 | 8cb45c13 | Antony Chazapis | self.file_index = 0 |
827 | 22dab079 | Antony Chazapis | if self.range_index > 0: |
828 | 22dab079 | Antony Chazapis | out.append('')
|
829 | 22dab079 | Antony Chazapis | out.append('--' + self.boundary) |
830 | 2715ade4 | Sofia Papagiannaki | out.append('Content-Range: bytes %d-%d/%d' % (
|
831 | 2715ade4 | Sofia Papagiannaki | self.offset, self.offset + self.length - 1, self.size)) |
832 | 22dab079 | Antony Chazapis | out.append('Content-Transfer-Encoding: binary')
|
833 | 22dab079 | Antony Chazapis | out.append('')
|
834 | 22dab079 | Antony Chazapis | out.append('')
|
835 | 22dab079 | Antony Chazapis | return '\r\n'.join(out) |
836 | 22dab079 | Antony Chazapis | else:
|
837 | 22dab079 | Antony Chazapis | # Footer.
|
838 | 22dab079 | Antony Chazapis | out.append('')
|
839 | 22dab079 | Antony Chazapis | out.append('--' + self.boundary + '--') |
840 | 22dab079 | Antony Chazapis | out.append('')
|
841 | 22dab079 | Antony Chazapis | return '\r\n'.join(out) |
842 | 22dab079 | Antony Chazapis | |
843 | 2715ade4 | Sofia Papagiannaki | |
844 | 8cb45c13 | Antony Chazapis | def object_data_response(request, sizes, hashmaps, meta, public=False): |
845 | 7bef5750 | Antony Chazapis | """Get the HttpResponse object for replying with the object's data."""
|
846 | 2715ade4 | Sofia Papagiannaki | |
847 | 7bef5750 | Antony Chazapis | # Range handling.
|
848 | 8cb45c13 | Antony Chazapis | size = sum(sizes)
|
849 | 7bef5750 | Antony Chazapis | ranges = get_range(request, size) |
850 | 7bef5750 | Antony Chazapis | if ranges is None: |
851 | 7bef5750 | Antony Chazapis | ranges = [(0, size)]
|
852 | 7bef5750 | Antony Chazapis | ret = 200
|
853 | 7bef5750 | Antony Chazapis | else:
|
854 | 7bef5750 | Antony Chazapis | check = [True for offset, length in ranges if |
855 | 2715ade4 | Sofia Papagiannaki | length <= 0 or length > size or |
856 | 2715ade4 | Sofia Papagiannaki | offset < 0 or offset >= size or |
857 | 2715ade4 | Sofia Papagiannaki | offset + length > size] |
858 | 7bef5750 | Antony Chazapis | if len(check) > 0: |
859 | 6d1e6dce | Sofia Papagiannaki | raise RangeNotSatisfiable('Requested range exceeds object limits') |
860 | 7bef5750 | Antony Chazapis | ret = 206
|
861 | 15d465b8 | Antony Chazapis | if_range = request.META.get('HTTP_IF_RANGE')
|
862 | 15d465b8 | Antony Chazapis | if if_range:
|
863 | 6d1e6dce | Sofia Papagiannaki | try:
|
864 | 15d465b8 | Antony Chazapis | # Modification time has passed instead.
|
865 | 6d1e6dce | Sofia Papagiannaki | last_modified = parse_http_date(if_range) |
866 | 6d1e6dce | Sofia Papagiannaki | if last_modified != meta['modified']: |
867 | 6d1e6dce | Sofia Papagiannaki | ranges = [(0, size)]
|
868 | 6d1e6dce | Sofia Papagiannaki | ret = 200
|
869 | 6d1e6dce | Sofia Papagiannaki | except ValueError: |
870 | 33b4e4a6 | Antony Chazapis | if if_range != meta['checksum']: |
871 | 6d1e6dce | Sofia Papagiannaki | ranges = [(0, size)]
|
872 | 6d1e6dce | Sofia Papagiannaki | ret = 200
|
873 | 2715ade4 | Sofia Papagiannaki | |
874 | 7bef5750 | Antony Chazapis | if ret == 206 and len(ranges) > 1: |
875 | 7bef5750 | Antony Chazapis | boundary = uuid.uuid4().hex |
876 | 7bef5750 | Antony Chazapis | else:
|
877 | 7bef5750 | Antony Chazapis | boundary = ''
|
878 | 39593b2b | Giorgos Verigakis | wrapper = ObjectWrapper(request.backend, ranges, sizes, hashmaps, boundary) |
879 | 7bef5750 | Antony Chazapis | response = HttpResponse(wrapper, status=ret) |
880 | 02c0c3fa | Antony Chazapis | put_object_headers(response, meta, public) |
881 | 7bef5750 | Antony Chazapis | if ret == 206: |
882 | 7bef5750 | Antony Chazapis | if len(ranges) == 1: |
883 | 7bef5750 | Antony Chazapis | offset, length = ranges[0]
|
884 | 2715ade4 | Sofia Papagiannaki | response[ |
885 | 2715ade4 | Sofia Papagiannaki | 'Content-Length'] = length # Update with the correct length. |
886 | 2715ade4 | Sofia Papagiannaki | response['Content-Range'] = 'bytes %d-%d/%d' % ( |
887 | 2715ade4 | Sofia Papagiannaki | offset, offset + length - 1, size)
|
888 | 7bef5750 | Antony Chazapis | else:
|
889 | 7bef5750 | Antony Chazapis | del(response['Content-Length']) |
890 | 2715ade4 | Sofia Papagiannaki | response['Content-Type'] = 'multipart/byteranges; boundary=%s' % ( |
891 | 2715ade4 | Sofia Papagiannaki | boundary,) |
892 | 7bef5750 | Antony Chazapis | return response
|
893 | 7bef5750 | Antony Chazapis | |
894 | 2715ade4 | Sofia Papagiannaki | |
895 | 39593b2b | Giorgos Verigakis | def put_object_block(request, hashmap, data, offset): |
896 | cb146cf9 | Antony Chazapis | """Put one block of data at the given offset."""
|
897 | 2715ade4 | Sofia Papagiannaki | |
898 | 39593b2b | Giorgos Verigakis | bi = int(offset / request.backend.block_size)
|
899 | 39593b2b | Giorgos Verigakis | bo = offset % request.backend.block_size |
900 | 39593b2b | Giorgos Verigakis | bl = min(len(data), request.backend.block_size - bo) |
901 | cb146cf9 | Antony Chazapis | if bi < len(hashmap): |
902 | 39593b2b | Giorgos Verigakis | hashmap[bi] = request.backend.update_block(hashmap[bi], data[:bl], bo) |
903 | cb146cf9 | Antony Chazapis | else:
|
904 | 39593b2b | Giorgos Verigakis | hashmap.append(request.backend.put_block(('\x00' * bo) + data[:bl]))
|
905 | 2715ade4 | Sofia Papagiannaki | return bl # Return ammount of data written. |
906 | 2715ade4 | Sofia Papagiannaki | |
907 | cb146cf9 | Antony Chazapis | |
908 | b3155065 | Antony Chazapis | def hashmap_md5(backend, hashmap, size): |
909 | cddcf432 | chazapis | """Produce the MD5 sum from the data in the hashmap."""
|
910 | 2715ade4 | Sofia Papagiannaki | |
911 | cddcf432 | chazapis | # TODO: Search backend for the MD5 of another object with the same hashmap and size...
|
912 | cddcf432 | chazapis | md5 = hashlib.md5() |
913 | b3155065 | Antony Chazapis | bs = backend.block_size |
914 | cddcf432 | chazapis | for bi, hash in enumerate(hashmap): |
915 | 2715ade4 | Sofia Papagiannaki | data = backend.get_block(hash) # Blocks come in padded. |
916 | cddcf432 | chazapis | if bi == len(hashmap) - 1: |
917 | c9865fe1 | Antony Chazapis | data = data[:size % bs] |
918 | c9865fe1 | Antony Chazapis | md5.update(data) |
919 | cddcf432 | chazapis | return md5.hexdigest().lower()
|
920 | 49133392 | Antony Chazapis | |
921 | 2715ade4 | Sofia Papagiannaki | |
922 | af7bb62f | Antony Chazapis | def simple_list_response(request, l): |
923 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'text': |
924 | 6b6b6c1e | Antony Chazapis | return '\n'.join(l) + '\n' |
925 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'xml': |
926 | af7bb62f | Antony Chazapis | return render_to_string('items.xml', {'items': l}) |
927 | 6b6b6c1e | Antony Chazapis | if request.serialization == 'json': |
928 | 6b6b6c1e | Antony Chazapis | return json.dumps(l)
|
929 | 6b6b6c1e | Antony Chazapis | |
930 | 35d42381 | Vangelis Koukis | |
931 | edb7875c | Christos Stavrakakis | from pithos.backends.util import PithosBackendPool |
932 | 35d42381 | Vangelis Koukis | POOL_SIZE = 5
|
933 | 47462eda | Filippos Giannakos | if RADOS_STORAGE:
|
934 | 47462eda | Filippos Giannakos | BLOCK_PARAMS = { 'mappool': RADOS_POOL_MAPS,
|
935 | 47462eda | Filippos Giannakos | 'blockpool': RADOS_POOL_BLOCKS,
|
936 | 47462eda | Filippos Giannakos | } |
937 | 47462eda | Filippos Giannakos | else:
|
938 | 47462eda | Filippos Giannakos | BLOCK_PARAMS = { 'mappool': None, |
939 | 47462eda | Filippos Giannakos | 'blockpool': None, |
940 | 47462eda | Filippos Giannakos | } |
941 | 35d42381 | Vangelis Koukis | |
942 | 761c2b3c | root | |
943 | edb7875c | Christos Stavrakakis | _pithos_backend_pool = PithosBackendPool(size=POOL_SIZE, |
944 | edb7875c | Christos Stavrakakis | db_module=BACKEND_DB_MODULE, |
945 | edb7875c | Christos Stavrakakis | db_connection=BACKEND_DB_CONNECTION, |
946 | edb7875c | Christos Stavrakakis | block_module=BACKEND_BLOCK_MODULE, |
947 | edb7875c | Christos Stavrakakis | block_path=BACKEND_BLOCK_PATH, |
948 | edb7875c | Christos Stavrakakis | block_umask=BACKEND_BLOCK_UMASK, |
949 | edb7875c | Christos Stavrakakis | queue_module=BACKEND_QUEUE_MODULE, |
950 | b1dadd0e | Sofia Papagiannaki | queue_hosts=BACKEND_QUEUE_HOSTS, |
951 | b1dadd0e | Sofia Papagiannaki | queue_exchange=BACKEND_QUEUE_EXCHANGE, |
952 | 3173699c | Sofia Papagiannaki | quotaholder_url=QUOTAHOLDER_URL, |
953 | 3173699c | Sofia Papagiannaki | quotaholder_token=QUOTAHOLDER_TOKEN, |
954 | a9420179 | Sofia Papagiannaki | free_versioning=BACKEND_FREE_VERSIONING, |
955 | 47462eda | Filippos Giannakos | block_params=BLOCK_PARAMS) |
956 | 35d42381 | Vangelis Koukis | |
957 | 35d42381 | Vangelis Koukis | def get_backend(): |
958 | edb7875c | Christos Stavrakakis | backend = _pithos_backend_pool.pool_get() |
959 | edb7875c | Christos Stavrakakis | backend.default_policy['quota'] = BACKEND_QUOTA
|
960 | edb7875c | Christos Stavrakakis | backend.default_policy['versioning'] = BACKEND_VERSIONING
|
961 | f77b1da9 | Stratos Psomadakis | backend.messages = [] |
962 | edb7875c | Christos Stavrakakis | return backend
|
963 | 35d42381 | Vangelis Koukis | |
964 | 35d42381 | Vangelis Koukis | |
965 | 9fefc052 | Antony Chazapis | def update_request_headers(request): |
966 | 9fefc052 | Antony Chazapis | # Handle URL-encoded keys and values.
|
967 | 2715ade4 | Sofia Papagiannaki | meta = dict([(
|
968 | 2715ade4 | Sofia Papagiannaki | k, v) for k, v in request.META.iteritems() if k.startswith('HTTP_')]) |
969 | 88283e9e | Antony Chazapis | for k, v in meta.iteritems(): |
970 | 88283e9e | Antony Chazapis | try:
|
971 | 88283e9e | Antony Chazapis | k.decode('ascii')
|
972 | 88283e9e | Antony Chazapis | v.decode('ascii')
|
973 | 88283e9e | Antony Chazapis | except UnicodeDecodeError: |
974 | 88283e9e | Antony Chazapis | raise BadRequest('Bad character in headers.') |
975 | 88283e9e | Antony Chazapis | if '%' in k or '%' in v: |
976 | 88283e9e | Antony Chazapis | del(request.META[k])
|
977 | 2715ade4 | Sofia Papagiannaki | request.META[unquote(k)] = smart_unicode(unquote( |
978 | 2715ade4 | Sofia Papagiannaki | v), strings_only=True)
|
979 | 2715ade4 | Sofia Papagiannaki | |
980 | 9fefc052 | Antony Chazapis | |
981 | b956618e | Antony Chazapis | def update_response_headers(request, response): |
982 | b956618e | Antony Chazapis | if request.serialization == 'xml': |
983 | b956618e | Antony Chazapis | response['Content-Type'] = 'application/xml; charset=UTF-8' |
984 | b956618e | Antony Chazapis | elif request.serialization == 'json': |
985 | b956618e | Antony Chazapis | response['Content-Type'] = 'application/json; charset=UTF-8' |
986 | 22dab079 | Antony Chazapis | elif not response['Content-Type']: |
987 | b956618e | Antony Chazapis | response['Content-Type'] = 'text/plain; charset=UTF-8' |
988 | 2715ade4 | Sofia Papagiannaki | |
989 | 9fefc052 | Antony Chazapis | if (not response.has_header('Content-Length') and |
990 | 9fefc052 | Antony Chazapis | not (response.has_header('Content-Type') and |
991 | 9fefc052 | Antony Chazapis | response['Content-Type'].startswith('multipart/byteranges'))): |
992 | b980169d | Antony Chazapis | response['Content-Length'] = len(response.content) |
993 | 2715ade4 | Sofia Papagiannaki | |
994 | 9fefc052 | Antony Chazapis | # URL-encode unicode in headers.
|
995 | 9fefc052 | Antony Chazapis | meta = response.items() |
996 | 9fefc052 | Antony Chazapis | for k, v in meta: |
997 | 88283e9e | Antony Chazapis | if (k.startswith('X-Account-') or k.startswith('X-Container-') or |
998 | 2715ade4 | Sofia Papagiannaki | k.startswith('X-Object-') or k.startswith('Content-')): |
999 | 9fefc052 | Antony Chazapis | del(response[k])
|
1000 | 88283e9e | Antony Chazapis | response[quote(k)] = quote(v, safe='/=,:@; ')
|
1001 | b956618e | Antony Chazapis | |
1002 | 2715ade4 | Sofia Papagiannaki | |
1003 | b956618e | Antony Chazapis | def render_fault(request, fault): |
1004 | a7dff008 | Antony Chazapis | if isinstance(fault, InternalServerError) and settings.DEBUG: |
1005 | b956618e | Antony Chazapis | fault.details = format_exc(fault) |
1006 | 2715ade4 | Sofia Papagiannaki | |
1007 | b956618e | Antony Chazapis | request.serialization = 'text'
|
1008 | 08de868d | Antony Chazapis | data = fault.message + '\n'
|
1009 | 08de868d | Antony Chazapis | if fault.details:
|
1010 | 08de868d | Antony Chazapis | data += '\n' + fault.details
|
1011 | b956618e | Antony Chazapis | response = HttpResponse(data, status=fault.code) |
1012 | b956618e | Antony Chazapis | update_response_headers(request, response) |
1013 | b956618e | Antony Chazapis | return response
|
1014 | b956618e | Antony Chazapis | |
1015 | 2715ade4 | Sofia Papagiannaki | |
1016 | b956618e | Antony Chazapis | def request_serialization(request, format_allowed=False): |
1017 | 58a6c894 | Antony Chazapis | """Return the serialization format requested.
|
1018 | 2715ade4 | Sofia Papagiannaki |
|
1019 | b956618e | Antony Chazapis | Valid formats are 'text' and 'json', 'xml' if 'format_allowed' is True.
|
1020 | b956618e | Antony Chazapis | """
|
1021 | 2715ade4 | Sofia Papagiannaki | |
1022 | b956618e | Antony Chazapis | if not format_allowed: |
1023 | b956618e | Antony Chazapis | return 'text' |
1024 | 2715ade4 | Sofia Papagiannaki | |
1025 | b956618e | Antony Chazapis | format = request.GET.get('format')
|
1026 | b956618e | Antony Chazapis | if format == 'json': |
1027 | b956618e | Antony Chazapis | return 'json' |
1028 | b956618e | Antony Chazapis | elif format == 'xml': |
1029 | b956618e | Antony Chazapis | return 'xml' |
1030 | 2715ade4 | Sofia Papagiannaki | |
1031 | f9f15f92 | Antony Chazapis | for item in request.META.get('HTTP_ACCEPT', '').split(','): |
1032 | f9f15f92 | Antony Chazapis | accept, sep, rest = item.strip().partition(';')
|
1033 | f9f15f92 | Antony Chazapis | if accept == 'application/json': |
1034 | f9f15f92 | Antony Chazapis | return 'json' |
1035 | f9f15f92 | Antony Chazapis | elif accept == 'application/xml' or accept == 'text/xml': |
1036 | f9f15f92 | Antony Chazapis | return 'xml' |
1037 | 2715ade4 | Sofia Papagiannaki | |
1038 | b956618e | Antony Chazapis | return 'text' |
1039 | b956618e | Antony Chazapis | |
1040 | b3102a96 | Sofia Papagiannaki | class User(unicode): |
1041 | d62295ba | Sofia Papagiannaki | pass
|
1042 | 35d42381 | Vangelis Koukis | |
1043 | c846fad1 | Sofia Papagiannaki | def get_pithos_usage(usage): |
1044 | c846fad1 | Sofia Papagiannaki | for u in usage: |
1045 | c846fad1 | Sofia Papagiannaki | if u.get('name') == 'pithos+.diskspace': |
1046 | c846fad1 | Sofia Papagiannaki | return u
|
1047 | c846fad1 | Sofia Papagiannaki | |
1048 | c846fad1 | Sofia Papagiannaki | def api_method(http_method=None, format_allowed=False, user_required=True, |
1049 | c846fad1 | Sofia Papagiannaki | request_usage=False):
|
1050 | 58a6c894 | Antony Chazapis | """Decorator function for views that implement an API method."""
|
1051 | 2715ade4 | Sofia Papagiannaki | |
1052 | b956618e | Antony Chazapis | def decorator(func): |
1053 | b956618e | Antony Chazapis | @wraps(func)
|
1054 | b956618e | Antony Chazapis | def wrapper(request, *args, **kwargs): |
1055 | b956618e | Antony Chazapis | try:
|
1056 | b956618e | Antony Chazapis | if http_method and request.method != http_method: |
1057 | b956618e | Antony Chazapis | raise BadRequest('Method not allowed.') |
1058 | 2715ade4 | Sofia Papagiannaki | |
1059 | dfdf4802 | Sofia Papagiannaki | if user_required:
|
1060 | dfdf4802 | Sofia Papagiannaki | token = None
|
1061 | dfdf4802 | Sofia Papagiannaki | if request.method in ('HEAD', 'GET') and COOKIE_NAME in request.COOKIES: |
1062 | 2715ade4 | Sofia Papagiannaki | cookie_value = unquote( |
1063 | 2715ade4 | Sofia Papagiannaki | request.COOKIES.get(COOKIE_NAME, ''))
|
1064 | bf45cb4a | Sofia Papagiannaki | account, sep, token = cookie_value.partition('|')
|
1065 | 2715ade4 | Sofia Papagiannaki | get_user(request, |
1066 | c846fad1 | Sofia Papagiannaki | AUTHENTICATION_URL, |
1067 | c846fad1 | Sofia Papagiannaki | AUTHENTICATION_USERS, |
1068 | c846fad1 | Sofia Papagiannaki | token, |
1069 | c846fad1 | Sofia Papagiannaki | user_required) |
1070 | dfdf4802 | Sofia Papagiannaki | if getattr(request, 'user', None) is None: |
1071 | dfdf4802 | Sofia Papagiannaki | raise Unauthorized('Access denied') |
1072 | b3102a96 | Sofia Papagiannaki | assert getattr(request, 'user_uniq', None) != None |
1073 | b3102a96 | Sofia Papagiannaki | request.user_uniq = User(request.user_uniq) |
1074 | 019d9e19 | Sofia Papagiannaki | request.user_uniq.uuid = request.user.get('uuid')
|
1075 | c846fad1 | Sofia Papagiannaki | request.user_usage = get_pithos_usage( |
1076 | c846fad1 | Sofia Papagiannaki | request.user.get('usage'))
|
1077 | 2c22e4ac | Antony Chazapis | |
1078 | b956618e | Antony Chazapis | # The args variable may contain up to (account, container, object).
|
1079 | b956618e | Antony Chazapis | if len(args) > 1 and len(args[1]) > 256: |
1080 | b956618e | Antony Chazapis | raise BadRequest('Container name too large.') |
1081 | b956618e | Antony Chazapis | if len(args) > 2 and len(args[2]) > 1024: |
1082 | b956618e | Antony Chazapis | raise BadRequest('Object name too large.') |
1083 | 2715ade4 | Sofia Papagiannaki | |
1084 | 9fefc052 | Antony Chazapis | # Format and check headers.
|
1085 | 9fefc052 | Antony Chazapis | update_request_headers(request) |
1086 | 2715ade4 | Sofia Papagiannaki | |
1087 | b956618e | Antony Chazapis | # Fill in custom request variables.
|
1088 | 2715ade4 | Sofia Papagiannaki | request.serialization = request_serialization( |
1089 | 2715ade4 | Sofia Papagiannaki | request, format_allowed) |
1090 | 228de81b | Antony Chazapis | request.backend = get_backend() |
1091 | 2715ade4 | Sofia Papagiannaki | |
1092 | b956618e | Antony Chazapis | response = func(request, *args, **kwargs) |
1093 | b956618e | Antony Chazapis | update_response_headers(request, response) |
1094 | b956618e | Antony Chazapis | return response
|
1095 | b956618e | Antony Chazapis | except Fault, fault:
|
1096 | 6e9c8fc1 | Christos Stavrakakis | if fault.code >= 500: |
1097 | 6e9c8fc1 | Christos Stavrakakis | logger.exception("API Fault")
|
1098 | b956618e | Antony Chazapis | return render_fault(request, fault)
|
1099 | b956618e | Antony Chazapis | except BaseException, e: |
1100 | b956618e | Antony Chazapis | logger.exception('Unexpected error: %s' % e)
|
1101 | dfdf4802 | Sofia Papagiannaki | fault = InternalServerError('Unexpected error: %s' % e)
|
1102 | b956618e | Antony Chazapis | return render_fault(request, fault)
|
1103 | 7b25e082 | Antony Chazapis | finally:
|
1104 | 297513ba | Antony Chazapis | if getattr(request, 'backend', None) is not None: |
1105 | d14fe290 | Antony Chazapis | request.backend.close() |
1106 | b956618e | Antony Chazapis | return wrapper
|
1107 | b956618e | Antony Chazapis | return decorator |