from django.http import HttpResponse
from django.utils.http import http_date, parse_etags
-from pithos.api.compat import parse_http_date_safe
-from pithos.api.faults import (Fault, NotModified, BadRequest, ItemNotFound, LengthRequired,
- PreconditionFailed, RangeNotSatisfiable, ServiceUnavailable)
+from pithos.api.compat import parse_http_date_safe, parse_http_date
+from pithos.api.faults import (Fault, NotModified, BadRequest, Unauthorized, ItemNotFound,
+ LengthRequired, PreconditionFailed, RangeNotSatisfiable,
+ ServiceUnavailable)
from pithos.backends import backend
+from pithos.backends.base import NotAllowedError
import datetime
import logging
logger = logging.getLogger(__name__)
-def printable_meta_dict(d):
+def printable_header_dict(d):
"""Format a meta dictionary for printing out json/xml.
Convert all keys to lower case and replace dashes to underscores.
del(d['modified'])
return dict([(k.lower().replace('-', '_'), v) for k, v in d.iteritems()])
-def format_meta_key(k):
+def format_header_key(k):
"""Convert underscores to dashes and capitalize intra-dash strings."""
return '-'.join([x.capitalize() for x in k.replace('_', '-').split('-')])
-def get_meta_prefix(request, prefix):
- """Get all prefix-* request headers in a dict. Reformat keys with format_meta_key()."""
+def get_header_prefix(request, prefix):
+ """Get all prefix-* request headers in a dict. Reformat keys with format_header_key()."""
prefix = 'HTTP_' + prefix.upper().replace('-', '_')
- return dict([(format_meta_key(k[5:]), v) for k, v in request.META.iteritems() if k.startswith(prefix)])
-
-def get_account_meta(request):
- """Get metadata from an account request."""
-
- meta = get_meta_prefix(request, 'X-Account-Meta-')
- return meta
-
-def put_account_meta(response, meta):
- """Put metadata in an account response."""
-
+ # TODO: Document or remove '~' replacing.
+ 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)])
+
+def get_account_headers(request):
+ meta = get_header_prefix(request, 'X-Account-Meta-')
+ groups = {}
+ for k, v in get_header_prefix(request, 'X-Account-Group-').iteritems():
+ n = k[16:].lower()
+ if '-' in n or '_' in n:
+ raise BadRequest('Bad characters in group name')
+ groups[n] = v.replace(' ', '').split(',')
+ if '' in groups[n]:
+ groups[n].remove('')
+ return meta, groups
+
+def put_account_headers(response, meta, groups):
response['X-Account-Container-Count'] = meta['count']
response['X-Account-Bytes-Used'] = meta['bytes']
if 'modified' in meta:
response[k.encode('utf-8')] = meta[k].encode('utf-8')
if 'until_timestamp' in meta:
response['X-Account-Until-Timestamp'] = http_date(int(meta['until_timestamp']))
+ for k, v in groups.iteritems():
+ response[format_header_key('X-Account-Group-' + k).encode('utf-8')] = (','.join(v)).encode('utf-8')
-def get_container_meta(request):
- """Get metadata from a container request."""
-
- meta = get_meta_prefix(request, 'X-Container-Meta-')
- return meta
+def get_container_headers(request):
+ meta = get_header_prefix(request, 'X-Container-Meta-')
+ policy = dict([(k[19:].lower(), v.replace(' ', '')) for k, v in get_header_prefix(request, 'X-Container-Policy-').iteritems()])
+ return meta, policy
-def put_container_meta(response, meta):
- """Put metadata in a container response."""
-
+def put_container_headers(response, meta, policy):
response['X-Container-Object-Count'] = meta['count']
response['X-Container-Bytes-Used'] = meta['bytes']
response['Last-Modified'] = http_date(int(meta['modified']))
response['X-Container-Block-Hash'] = backend.hash_algorithm
if 'until_timestamp' in meta:
response['X-Container-Until-Timestamp'] = http_date(int(meta['until_timestamp']))
+ for k, v in policy.iteritems():
+ response[format_header_key('X-Container-Policy-' + k).encode('utf-8')] = v.encode('utf-8')
-def get_object_meta(request):
- """Get metadata from an object request."""
-
- meta = get_meta_prefix(request, 'X-Object-Meta-')
+def get_object_headers(request):
+ meta = get_header_prefix(request, 'X-Object-Meta-')
if request.META.get('CONTENT_TYPE'):
meta['Content-Type'] = request.META['CONTENT_TYPE']
if request.META.get('HTTP_CONTENT_ENCODING'):
meta['Content-Disposition'] = request.META['HTTP_CONTENT_DISPOSITION']
if request.META.get('HTTP_X_OBJECT_MANIFEST'):
meta['X-Object-Manifest'] = request.META['HTTP_X_OBJECT_MANIFEST']
- if request.META.get('HTTP_X_OBJECT_PUBLIC'):
- meta['X-Object-Public'] = request.META['HTTP_X_OBJECT_PUBLIC']
- return meta
+ return meta, get_sharing(request), get_public(request)
-def put_object_meta(response, meta, public=False):
- """Put metadata in an object response."""
-
+def put_object_headers(response, meta, restricted=False):
response['ETag'] = meta['hash']
response['Content-Length'] = meta['bytes']
response['Content-Type'] = meta.get('Content-Type', 'application/octet-stream')
response['Last-Modified'] = http_date(int(meta['modified']))
- if not public:
+ if not restricted:
+ response['X-Object-Modified-By'] = meta['modified_by']
response['X-Object-Version'] = meta['version']
- response['X-Object-Version-Timestamp'] = meta['version_timestamp']
- response['X-Object-Size'] = meta['bytes']
+ response['X-Object-Version-Timestamp'] = http_date(int(meta['version_timestamp']))
for k in [x for x in meta.keys() if x.startswith('X-Object-Meta-')]:
response[k.encode('utf-8')] = meta[k].encode('utf-8')
- for k in ('Content-Encoding', 'Content-Disposition', 'X-Object-Manifest', 'X-Object-Public'):
+ for k in ('Content-Encoding', 'Content-Disposition', 'X-Object-Manifest', 'X-Object-Sharing', 'X-Object-Shared-By', 'X-Object-Public'):
if k in meta:
response[k] = meta[k]
else:
md5.update(hash)
meta['hash'] = md5.hexdigest().lower()
+def update_sharing_meta(permissions, v_account, v_container, v_object, meta):
+ if permissions is None:
+ return
+ perm_path, perms = permissions
+ if len(perms) == 0:
+ return
+ ret = []
+ r = ','.join(perms.get('read', []))
+ if r:
+ ret.append('read=' + r)
+ w = ','.join(perms.get('write', []))
+ if w:
+ ret.append('write=' + w)
+ meta['X-Object-Sharing'] = '; '.join(ret)
+ if '/'.join((v_account, v_container, v_object)) != perm_path:
+ meta['X-Object-Shared-By'] = perm_path
+
+def update_public_meta(public, meta):
+ if not public:
+ return
+ meta['X-Object-Public'] = public
+
def validate_modification_preconditions(request, meta):
"""Check that the modified timestamp conforms with the preconditions set."""
def copy_or_move_object(request, v_account, src_container, src_name, dest_container, dest_name, move=False):
"""Copy or move an object."""
- meta = get_object_meta(request)
- # Keep previous values of 'Content-Type' (if a new one is absent) and 'hash'.
- try:
- src_meta = backend.get_object_meta(request.user, v_account, src_container, src_name)
- except NameError:
- raise ItemNotFound('Container or object does not exist')
- if 'Content-Type' in meta and 'Content-Type' in src_meta:
- del(src_meta['Content-Type'])
- for k in ('Content-Type', 'hash'):
- if k in src_meta:
- meta[k] = src_meta[k]
-
- src_version = request.META.get('HTTP_X_SOURCE_VERSION')
+ meta, permissions, public = get_object_headers(request)
+ src_version = request.META.get('HTTP_X_SOURCE_VERSION')
try:
if move:
- backend.move_object(request.user, v_account, src_container, src_name, dest_container, dest_name, meta, True, src_version)
+ backend.move_object(request.user, v_account, src_container, src_name, dest_container, dest_name, meta, False, permissions)
else:
- backend.copy_object(request.user, v_account, src_container, src_name, dest_container, dest_name, meta, True, src_version)
- except NameError:
+ backend.copy_object(request.user, v_account, src_container, src_name, dest_container, dest_name, meta, False, permissions, src_version)
+ except NotAllowedError:
+ raise Unauthorized('Access denied')
+ except NameError, IndexError:
raise ItemNotFound('Container or object does not exist')
+ except ValueError:
+ raise BadRequest('Invalid sharing header')
+ except AttributeError:
+ raise Conflict('Sharing already set above or below this path in the hierarchy')
+ if public is not None:
+ try:
+ backend.update_object_public(request.user, v_account, v_container, v_object, public)
+ except NotAllowedError:
+ raise Unauthorized('Access denied')
+ except NameError:
+ raise ItemNotFound('Object does not exist')
def get_int_parameter(request, name):
p = request.GET.get(name)
length = upto - offset + 1
return (offset, length, total)
+def get_sharing(request):
+ """Parse an X-Object-Sharing header from the request.
+
+ Raises BadRequest on error.
+ """
+
+ permissions = request.META.get('HTTP_X_OBJECT_SHARING')
+ if permissions is None:
+ return None
+
+ ret = {}
+ permissions = permissions.replace(' ', '')
+ if permissions == '':
+ return ret
+ for perm in (x for x in permissions.split(';')):
+ if perm.startswith('read='):
+ ret['read'] = [v.replace(' ','').lower() for v in perm[5:].split(',')]
+ if '' in ret['read']:
+ ret['read'].remove('')
+ if '*' in ret['read']:
+ ret['read'] = ['*']
+ if len(ret['read']) == 0:
+ raise BadRequest('Bad X-Object-Sharing header value')
+ elif perm.startswith('write='):
+ ret['write'] = [v.replace(' ','').lower() for v in perm[6:].split(',')]
+ if '' in ret['write']:
+ ret['write'].remove('')
+ if '*' in ret['write']:
+ ret['write'] = ['*']
+ if len(ret['write']) == 0:
+ raise BadRequest('Bad X-Object-Sharing header value')
+ else:
+ raise BadRequest('Bad X-Object-Sharing header value')
+ return ret
+
+def get_public(request):
+ """Parse an X-Object-Public header from the request.
+
+ Raises BadRequest on error.
+ """
+
+ public = request.META.get('HTTP_X_OBJECT_PUBLIC')
+ if public is None:
+ return None
+
+ public = public.replace(' ', '').lower()
+ if public == 'true':
+ return True
+ elif public == 'false' or public == '':
+ return False
+ raise BadRequest('Bad X-Object-Public header value')
+
def raw_input_socket(request):
"""Return the socket for reading the rest of the request."""
offset < 0 or offset >= size or
offset + length > size]
if len(check) > 0:
- raise RangeNotSatisfiable('Requested range exceeds object limits')
+ raise RangeNotSatisfiable('Requested range exceeds object limits')
ret = 206
+ if_range = request.META.get('HTTP_IF_RANGE', '')
+ if if_range and if_range.startswith('If-Range:'):
+ if_range = if_range.split('If-Range:')[1]
+ try:
+ # modification time has passed instead
+ last_modified = parse_http_date(if_range)
+ if last_modified != meta['modified']:
+ ranges = [(0, size)]
+ ret = 200
+ except ValueError:
+ if if_range != meta['hash']:
+ ranges = [(0, size)]
+ ret = 200
if ret == 206 and len(ranges) > 1:
boundary = uuid.uuid4().hex
boundary = ''
wrapper = ObjectWrapper(ranges, sizes, hashmaps, boundary)
response = HttpResponse(wrapper, status=ret)
- put_object_meta(response, meta, public)
+ put_object_headers(response, meta, public)
if ret == 206:
if len(ranges) == 1:
offset, length = ranges[0]
response['Content-Type'] = 'multipart/byteranges; boundary=%s' % (boundary,)
return response
+def put_object_block(hashmap, data, offset):
+ """Put one block of data at the given offset."""
+
+ bi = int(offset / backend.block_size)
+ bo = offset % backend.block_size
+ bl = min(len(data), backend.block_size - bo)
+ if bi < len(hashmap):
+ hashmap[bi] = backend.update_block(hashmap[bi], data[:bl], bo)
+ else:
+ hashmap.append(backend.put_block(('\x00' * bo) + data[:bl]))
+ return bl # Return ammount of data written.
+
def hashmap_hash(hashmap):
"""Produce the root hash, treating the hashmap as a Merkle-like tree."""
# Fill in custom request variables.
request.serialization = request_serialization(request, format_allowed)
- # TODO: Authenticate.
- request.user = "test"
response = func(request, *args, **kwargs)
update_response_headers(request, response)
projects / pithos / blobdiff