X-Git-Url: https://code.grnet.gr/git/pithos/blobdiff_plain/038f1ae9f56b7822f8f08998f4dc488d581f766b..e809b989fbf8f357b9bf44045ee8e33418b48489:/pithos/api/functions.py diff --git a/pithos/api/functions.py b/pithos/api/functions.py index 459d54d..3a3baf4 100644 --- a/pithos/api/functions.py +++ b/pithos/api/functions.py @@ -1,4 +1,4 @@ -# Copyright 2011 GRNET S.A. All rights reserved. +# Copyright 2011-2012 GRNET S.A. All rights reserved. # # Redistribution and use in source and binary forms, with or # without modification, are permitted provided that the following @@ -31,37 +31,45 @@ # interpreted as representing official policies, either expressed # or implied, of GRNET S.A. -import os -import logging -import hashlib +from xml.dom import minidom from django.conf import settings from django.http import HttpResponse from django.template.loader import render_to_string from django.utils import simplejson as json from django.utils.http import parse_etags +from django.utils.encoding import smart_str +from django.views.decorators.csrf import csrf_exempt + +from pithos.lib.filter import parse_filters -from pithos.api.faults import (Fault, NotModified, BadRequest, Unauthorized, ItemNotFound, Conflict, - LengthRequired, PreconditionFailed, RangeNotSatisfiable, UnprocessableEntity) -from pithos.api.util import (format_header_key, printable_header_dict, get_account_headers, - put_account_headers, get_container_headers, put_container_headers, get_object_headers, put_object_headers, - update_manifest_meta, update_sharing_meta, update_public_meta, validate_modification_preconditions, - validate_matching_preconditions, split_container_object_string, copy_or_move_object, - get_int_parameter, get_content_length, get_content_range, raw_input_socket, - socket_read_iterator, object_data_response, put_object_block, hashmap_hash, api_method) -from pithos.backends import backend -from pithos.backends.base import NotAllowedError +from pithos.api.faults import (Fault, NotModified, BadRequest, Unauthorized, Forbidden, ItemNotFound, Conflict, + LengthRequired, PreconditionFailed, RequestEntityTooLarge, RangeNotSatisfiable, UnprocessableEntity) +from pithos.api.util import (json_encode_decimal, rename_meta_key, format_header_key, printable_header_dict, + get_account_headers, put_account_headers, get_container_headers, put_container_headers, get_object_headers, + put_object_headers, update_manifest_meta, update_sharing_meta, update_public_meta, + validate_modification_preconditions, validate_matching_preconditions, split_container_object_string, + copy_or_move_object, get_int_parameter, get_content_length, get_content_range, socket_read_iterator, + SaveToBackendHandler, object_data_response, put_object_block, hashmap_md5, simple_list_response, api_method) +from pithos.backends.base import NotAllowedError, QuotaError + +import logging +import hashlib logger = logging.getLogger(__name__) +@csrf_exempt def top_demux(request): if request.method == 'GET': + if getattr(request, 'user', None) is not None: + return account_list(request) return authenticate(request) else: return method_not_allowed(request) +@csrf_exempt def account_demux(request, v_account): if request.method == 'HEAD': return account_meta(request, v_account) @@ -72,6 +80,7 @@ def account_demux(request, v_account): else: return method_not_allowed(request) +@csrf_exempt def container_demux(request, v_account, v_container): if request.method == 'HEAD': return container_meta(request, v_account, v_container) @@ -86,6 +95,7 @@ def container_demux(request, v_account, v_container): else: return method_not_allowed(request) +@csrf_exempt def object_demux(request, v_account, v_container, v_object): if request.method == 'HEAD': return object_meta(request, v_account, v_container, v_object) @@ -98,17 +108,19 @@ def object_demux(request, v_account, v_container, v_object): elif request.method == 'MOVE': return object_move(request, v_account, v_container, v_object) elif request.method == 'POST': + if request.META.get('CONTENT_TYPE', '').startswith('multipart/form-data'): + return object_write_form(request, v_account, v_container, v_object) return object_update(request, v_account, v_container, v_object) elif request.method == 'DELETE': return object_delete(request, v_account, v_container, v_object) else: return method_not_allowed(request) -@api_method('GET') +@api_method('GET', user_required=False) def authenticate(request): # Normal Response Codes: 204 - # Error Response Codes: serviceUnavailable (503), - # unauthorized (401), + # Error Response Codes: internalServerError (500), + # forbidden (403), # badRequest (400) x_auth_user = request.META.get('HTTP_X_AUTH_USER') @@ -116,87 +128,150 @@ def authenticate(request): if not x_auth_user or not x_auth_key: raise BadRequest('Missing X-Auth-User or X-Auth-Key header') response = HttpResponse(status=204) - inv_auth_tokens = dict((v, k) for k, v in settings.AUTH_TOKENS.items()) - response['X-Auth-Token'] = inv_auth_tokens.get(x_auth_user, '0000') - response['X-Storage-Url'] = os.path.join(request.build_absolute_uri(), 'demo') + + uri = request.build_absolute_uri() + if '?' in uri: + uri = uri[:uri.find('?')] + + response['X-Auth-Token'] = x_auth_key + response['X-Storage-Url'] = uri + ('' if uri.endswith('/') else '/') + x_auth_user + return response + +@api_method('GET', format_allowed=True) +def account_list(request): + # Normal Response Codes: 200, 204 + # Error Response Codes: internalServerError (500), + # badRequest (400) + + response = HttpResponse() + + marker = request.GET.get('marker') + limit = get_int_parameter(request.GET.get('limit')) + if not limit: + limit = 10000 + + accounts = request.backend.list_accounts(request.user_uniq, marker, limit) + + if request.serialization == 'text': + if len(accounts) == 0: + # The cloudfiles python bindings expect 200 if json/xml. + response.status_code = 204 + return response + response.status_code = 200 + response.content = '\n'.join(accounts) + '\n' + return response + + account_meta = [] + for x in accounts: + if x == request.user_uniq: + continue + try: + meta = request.backend.get_account_meta(request.user_uniq, x, 'pithos') + groups = request.backend.get_account_groups(request.user_uniq, x) + except NotAllowedError: + raise Forbidden('Not allowed') + else: + rename_meta_key(meta, 'modified', 'last_modified') + rename_meta_key(meta, 'until_timestamp', 'x_account_until_timestamp') + m = dict([(k[15:], v) for k, v in meta.iteritems() if k.startswith('X-Account-Meta-')]) + for k in m: + del(meta['X-Account-Meta-' + k]) + if m: + meta['X-Account-Meta'] = printable_header_dict(m) + if groups: + meta['X-Account-Group'] = printable_header_dict(dict([(k, ','.join(v)) for k, v in groups.iteritems()])) + account_meta.append(printable_header_dict(meta)) + if request.serialization == 'xml': + data = render_to_string('accounts.xml', {'accounts': account_meta}) + elif request.serialization == 'json': + data = json.dumps(account_meta) + response.status_code = 200 + response.content = data return response @api_method('HEAD') def account_meta(request, v_account): # Normal Response Codes: 204 - # Error Response Codes: serviceUnavailable (503), - # unauthorized (401), + # Error Response Codes: internalServerError (500), + # forbidden (403), # badRequest (400) - until = get_int_parameter(request, 'until') + until = get_int_parameter(request.GET.get('until')) try: - meta = backend.get_account_meta(request.user, v_account, until) - groups = backend.get_account_groups(request.user, v_account) + meta = request.backend.get_account_meta(request.user_uniq, v_account, 'pithos', until) + groups = request.backend.get_account_groups(request.user_uniq, v_account) + policy = request.backend.get_account_policy(request.user_uniq, v_account) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') + + validate_modification_preconditions(request, meta) response = HttpResponse(status=204) - put_account_headers(response, meta, groups) + put_account_headers(response, meta, groups, policy) return response @api_method('POST') def account_update(request, v_account): # Normal Response Codes: 202 - # Error Response Codes: serviceUnavailable (503), - # unauthorized (401), + # Error Response Codes: internalServerError (500), + # forbidden (403), # badRequest (400) meta, groups = get_account_headers(request) replace = True if 'update' in request.GET: - replace = False + replace = False if groups: try: - backend.update_account_groups(request.user, v_account, groups, replace) + request.backend.update_account_groups(request.user_uniq, v_account, + groups, replace) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except ValueError: raise BadRequest('Invalid groups header') - try: - backend.update_account_meta(request.user, v_account, meta, replace) - except NotAllowedError: - raise Unauthorized('Access denied') + if meta or replace: + try: + request.backend.update_account_meta(request.user_uniq, v_account, + 'pithos', meta, replace) + except NotAllowedError: + raise Forbidden('Not allowed') return HttpResponse(status=202) @api_method('GET', format_allowed=True) def container_list(request, v_account): # Normal Response Codes: 200, 204 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) - until = get_int_parameter(request, 'until') + until = get_int_parameter(request.GET.get('until')) try: - meta = backend.get_account_meta(request.user, v_account, until) - groups = backend.get_account_groups(request.user, v_account) + meta = request.backend.get_account_meta(request.user_uniq, v_account, 'pithos', until) + groups = request.backend.get_account_groups(request.user_uniq, v_account) + policy = request.backend.get_account_policy(request.user_uniq, v_account) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') validate_modification_preconditions(request, meta) response = HttpResponse() - put_account_headers(response, meta, groups) + put_account_headers(response, meta, groups, policy) marker = request.GET.get('marker') - limit = request.GET.get('limit') - if limit: - try: - limit = int(limit) - if limit <= 0: - raise ValueError - except ValueError: - limit = 10000 + limit = get_int_parameter(request.GET.get('limit')) + if not limit: + limit = 10000 + + shared = False + if 'shared' in request.GET: + shared = True try: - containers = backend.list_containers(request.user, v_account, marker, limit, until) + containers = request.backend.list_containers(request.user_uniq, v_account, + marker, limit, shared, until) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: containers = [] @@ -206,23 +281,31 @@ def container_list(request, v_account): response.status_code = 204 return response response.status_code = 200 - response.content = '\n'.join([x[0] for x in containers]) + '\n' + response.content = '\n'.join(containers) + '\n' return response container_meta = [] for x in containers: - if x[1] is not None: - try: - meta = backend.get_container_meta(request.user, v_account, x[0], until) - policy = backend.get_container_policy(request.user, v_account, x[0]) - except NotAllowedError: - raise Unauthorized('Access denied') - except NameError: - pass - else: - for k, v in policy.iteritems(): - meta['X-Container-Policy-' + k] = v - container_meta.append(printable_header_dict(meta)) + try: + meta = request.backend.get_container_meta(request.user_uniq, v_account, + x, 'pithos', until) + policy = request.backend.get_container_policy(request.user_uniq, + v_account, x) + except NotAllowedError: + raise Forbidden('Not allowed') + except NameError: + pass + else: + rename_meta_key(meta, 'modified', 'last_modified') + rename_meta_key(meta, 'until_timestamp', 'x_container_until_timestamp') + m = dict([(k[17:], v) for k, v in meta.iteritems() if k.startswith('X-Container-Meta-')]) + for k in m: + del(meta['X-Container-Meta-' + k]) + if m: + meta['X-Container-Meta'] = printable_header_dict(m) + if policy: + meta['X-Container-Policy'] = printable_header_dict(dict([(k, v) for k, v in policy.iteritems()])) + container_meta.append(printable_header_dict(meta)) if request.serialization == 'xml': data = render_to_string('containers.xml', {'account': v_account, 'containers': container_meta}) elif request.serialization == 'json': @@ -234,59 +317,77 @@ def container_list(request, v_account): @api_method('HEAD') def container_meta(request, v_account, v_container): # Normal Response Codes: 204 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) - until = get_int_parameter(request, 'until') + until = get_int_parameter(request.GET.get('until')) try: - meta = backend.get_container_meta(request.user, v_account, v_container, until) - meta['object_meta'] = backend.list_object_meta(request.user, v_account, v_container, until) - policy = backend.get_container_policy(request.user, v_account, v_container) + meta = request.backend.get_container_meta(request.user_uniq, v_account, + v_container, 'pithos', until) + meta['object_meta'] = request.backend.list_object_meta(request.user_uniq, + v_account, v_container, 'pithos', until) + policy = request.backend.get_container_policy(request.user_uniq, v_account, + v_container) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Container does not exist') + validate_modification_preconditions(request, meta) + response = HttpResponse(status=204) - put_container_headers(response, meta, policy) + put_container_headers(request, response, meta, policy) return response @api_method('PUT') def container_create(request, v_account, v_container): # Normal Response Codes: 201, 202 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) meta, policy = get_container_headers(request) try: - backend.put_container(request.user, v_account, v_container, policy) + request.backend.put_container(request.user_uniq, v_account, v_container, policy) ret = 201 except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') + except ValueError: + raise BadRequest('Invalid policy header') except NameError: ret = 202 - if len(meta) > 0: + if ret == 202 and policy: + try: + request.backend.update_container_policy(request.user_uniq, v_account, + v_container, policy, replace=False) + except NotAllowedError: + raise Forbidden('Not allowed') + except NameError: + raise ItemNotFound('Container does not exist') + except ValueError: + raise BadRequest('Invalid policy header') + if meta: try: - backend.update_container_meta(request.user, v_account, v_container, meta, replace=True) + request.backend.update_container_meta(request.user_uniq, v_account, + v_container, 'pithos', meta, replace=False) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Container does not exist') return HttpResponse(status=ret) -@api_method('POST') +@api_method('POST', format_allowed=True) def container_update(request, v_account, v_container): # Normal Response Codes: 202 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) meta, policy = get_container_headers(request) @@ -295,34 +396,55 @@ def container_update(request, v_account, v_container): replace = False if policy: try: - backend.update_container_policy(request.user, v_account, v_container, policy, replace) + request.backend.update_container_policy(request.user_uniq, v_account, + v_container, policy, replace) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Container does not exist') except ValueError: raise BadRequest('Invalid policy header') - try: - backend.update_container_meta(request.user, v_account, v_container, meta, replace) - except NotAllowedError: - raise Unauthorized('Access denied') - except NameError: - raise ItemNotFound('Container does not exist') - return HttpResponse(status=202) + if meta or replace: + try: + request.backend.update_container_meta(request.user_uniq, v_account, + v_container, 'pithos', meta, replace) + except NotAllowedError: + raise Forbidden('Not allowed') + except NameError: + raise ItemNotFound('Container does not exist') + + content_length = -1 + if request.META.get('HTTP_TRANSFER_ENCODING') != 'chunked': + content_length = get_int_parameter(request.META.get('CONTENT_LENGTH', 0)) + content_type = request.META.get('CONTENT_TYPE') + hashmap = [] + if content_type and content_type == 'application/octet-stream' and content_length != 0: + for data in socket_read_iterator(request, content_length, + request.backend.block_size): + # TODO: Raise 408 (Request Timeout) if this takes too long. + # TODO: Raise 499 (Client Disconnect) if a length is defined and we stop before getting this much data. + hashmap.append(request.backend.put_block(data)) + + response = HttpResponse(status=202) + if hashmap: + response.content = simple_list_response(request, hashmap) + return response @api_method('DELETE') def container_delete(request, v_account, v_container): # Normal Response Codes: 204 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # conflict (409), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) + until = get_int_parameter(request.GET.get('until')) try: - backend.delete_container(request.user, v_account, v_container) + request.backend.delete_container(request.user_uniq, v_account, v_container, + until) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Container does not exist') except IndexError: @@ -332,25 +454,28 @@ def container_delete(request, v_account, v_container): @api_method('GET', format_allowed=True) def object_list(request, v_account, v_container): # Normal Response Codes: 200, 204 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) - until = get_int_parameter(request, 'until') + until = get_int_parameter(request.GET.get('until')) try: - meta = backend.get_container_meta(request.user, v_account, v_container, until) - meta['object_meta'] = backend.list_object_meta(request.user, v_account, v_container, until) - policy = backend.get_container_policy(request.user, v_account, v_container) + meta = request.backend.get_container_meta(request.user_uniq, v_account, + v_container, 'pithos', until) + meta['object_meta'] = request.backend.list_object_meta(request.user_uniq, + v_account, v_container, 'pithos', until) + policy = request.backend.get_container_policy(request.user_uniq, v_account, + v_container) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Container does not exist') validate_modification_preconditions(request, meta) response = HttpResponse() - put_container_headers(response, meta, policy) + put_container_headers(request, response, meta, policy) path = request.GET.get('path') prefix = request.GET.get('prefix') @@ -371,26 +496,31 @@ def object_list(request, v_account, v_container): prefix = prefix.lstrip('/') marker = request.GET.get('marker') - limit = request.GET.get('limit') - if limit: - try: - limit = int(limit) - if limit <= 0: - raise ValueError - except ValueError: - limit = 10000 + limit = get_int_parameter(request.GET.get('limit')) + if not limit: + limit = 10000 keys = request.GET.get('meta') if keys: - keys = keys.split(',') - keys = [format_header_key('X-Object-Meta-' + x.strip()) for x in keys if x.strip() != ''] + keys = [smart_str(x.strip()) for x in keys.split(',') if x.strip() != ''] + included, excluded, opers = parse_filters(keys) + keys = [] + keys += [format_header_key('X-Object-Meta-' + x) for x in included] + keys += ['!'+format_header_key('X-Object-Meta-' + x) for x in excluded] + keys += ['%s%s%s' % (format_header_key('X-Object-Meta-' + k), o, v) for k, o, v in opers] else: keys = [] + shared = False + if 'shared' in request.GET: + shared = True + try: - objects = backend.list_objects(request.user, v_account, v_container, prefix, delimiter, marker, limit, virtual, keys, until) + objects = request.backend.list_objects(request.user_uniq, v_account, + v_container, prefix, delimiter, marker, + limit, virtual, 'pithos', keys, shared, until) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Container does not exist') @@ -410,25 +540,40 @@ def object_list(request, v_account, v_container): object_meta.append({'subdir': x[0]}) else: try: - meta = backend.get_object_meta(request.user, v_account, v_container, x[0], x[1]) + meta = request.backend.get_object_meta(request.user_uniq, v_account, + v_container, x[0], 'pithos', x[1]) if until is None: - permissions = backend.get_object_permissions(request.user, v_account, v_container, x[0]) - public = backend.get_object_public(request.user, v_account, v_container, x[0]) + permissions = request.backend.get_object_permissions( + request.user_uniq, v_account, v_container, x[0]) + public = request.backend.get_object_public(request.user_uniq, + v_account, v_container, x[0]) else: permissions = None public = None except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: pass else: - update_sharing_meta(permissions, v_account, v_container, x[0], meta) + rename_meta_key(meta, 'hash', 'x_object_hash') # Will be replaced by ETag. + rename_meta_key(meta, 'ETag', 'hash') + rename_meta_key(meta, 'uuid', 'x_object_uuid') + rename_meta_key(meta, 'modified', 'last_modified') + rename_meta_key(meta, 'modified_by', 'x_object_modified_by') + rename_meta_key(meta, 'version', 'x_object_version') + rename_meta_key(meta, 'version_timestamp', 'x_object_version_timestamp') + m = dict([(k[14:], v) for k, v in meta.iteritems() if k.startswith('X-Object-Meta-')]) + for k in m: + del(meta['X-Object-Meta-' + k]) + if m: + meta['X-Object-Meta'] = printable_header_dict(m) + update_sharing_meta(request, permissions, v_account, v_container, x[0], meta) update_public_meta(public, meta) object_meta.append(printable_header_dict(meta)) if request.serialization == 'xml': data = render_to_string('objects.xml', {'container': v_container, 'objects': object_meta}) elif request.serialization == 'json': - data = json.dumps(object_meta) + data = json.dumps(object_meta, default=json_encode_decimal) response.status_code = 200 response.content = data return response @@ -436,31 +581,43 @@ def object_list(request, v_account, v_container): @api_method('HEAD') def object_meta(request, v_account, v_container, v_object): # Normal Response Codes: 204 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) version = request.GET.get('version') try: - meta = backend.get_object_meta(request.user, v_account, v_container, v_object, version) + meta = request.backend.get_object_meta(request.user_uniq, v_account, + v_container, v_object, 'pithos', version) if version is None: - permissions = backend.get_object_permissions(request.user, v_account, v_container, v_object) - public = backend.get_object_public(request.user, v_account, v_container, v_object) + permissions = request.backend.get_object_permissions(request.user_uniq, + v_account, v_container, v_object) + public = request.backend.get_object_public(request.user_uniq, v_account, + v_container, v_object) else: permissions = None public = None except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') except IndexError: raise ItemNotFound('Version does not exist') update_manifest_meta(request, v_account, meta) - update_sharing_meta(permissions, v_account, v_container, v_object, meta) + update_sharing_meta(request, permissions, v_account, v_container, v_object, meta) update_public_meta(public, meta) + # Evaluate conditions. + validate_modification_preconditions(request, meta) + try: + validate_matching_preconditions(request, meta) + except NotModified: + response = HttpResponse(status=304) + response['ETag'] = meta['ETag'] + return response + response = HttpResponse(status=200) put_object_headers(response, meta) return response @@ -468,11 +625,11 @@ def object_meta(request, v_account, v_container, v_object): @api_method('GET', format_allowed=True) def object_read(request, v_account, v_container, v_object): # Normal Response Codes: 200, 206 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # rangeNotSatisfiable (416), # preconditionFailed (412), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400), # notModified (304) @@ -484,37 +641,41 @@ def object_read(request, v_account, v_container, v_object): raise BadRequest('No format specified for version list.') try: - v = backend.list_versions(request.user, v_account, v_container, v_object) + v = request.backend.list_versions(request.user_uniq, v_account, + v_container, v_object) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') d = {'versions': v} if request.serialization == 'xml': d['object'] = v_object data = render_to_string('versions.xml', d) elif request.serialization == 'json': - data = json.dumps(d) + data = json.dumps(d, default=json_encode_decimal) response = HttpResponse(data, status=200) response['Content-Length'] = len(data) return response try: - meta = backend.get_object_meta(request.user, v_account, v_container, v_object, version) + meta = request.backend.get_object_meta(request.user_uniq, v_account, + v_container, v_object, 'pithos', version) if version is None: - permissions = backend.get_object_permissions(request.user, v_account, v_container, v_object) - public = backend.get_object_public(request.user, v_account, v_container, v_object) + permissions = request.backend.get_object_permissions(request.user_uniq, + v_account, v_container, v_object) + public = request.backend.get_object_public(request.user_uniq, v_account, + v_container, v_object) else: permissions = None public = None except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') except IndexError: raise ItemNotFound('Version does not exist') update_manifest_meta(request, v_account, meta) - update_sharing_meta(permissions, v_account, v_container, v_object, meta) + update_sharing_meta(request, permissions, v_account, v_container, v_object, meta) update_public_meta(public, meta) # Evaluate conditions. @@ -523,7 +684,7 @@ def object_read(request, v_account, v_container, v_object): validate_matching_preconditions(request, meta) except NotModified: response = HttpResponse(status=304) - response['ETag'] = meta['hash'] + response['ETag'] = meta['ETag'] return response sizes = [] @@ -531,9 +692,10 @@ def object_read(request, v_account, v_container, v_object): if 'X-Object-Manifest' in meta: try: src_container, src_name = split_container_object_string('/' + meta['X-Object-Manifest']) - objects = backend.list_objects(request.user, v_account, src_container, prefix=src_name, virtual=False) + objects = request.backend.list_objects(request.user_uniq, v_account, + src_container, prefix=src_name, virtual=False) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except ValueError: raise BadRequest('Invalid X-Object-Manifest header') except NameError: @@ -541,32 +703,38 @@ def object_read(request, v_account, v_container, v_object): try: for x in objects: - s, h = backend.get_object_hashmap(request.user, v_account, src_container, x[0], x[1]) + s, h = request.backend.get_object_hashmap(request.user_uniq, + v_account, src_container, x[0], x[1]) sizes.append(s) hashmaps.append(h) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') except IndexError: raise ItemNotFound('Version does not exist') else: try: - s, h = backend.get_object_hashmap(request.user, v_account, v_container, v_object, version) + s, h = request.backend.get_object_hashmap(request.user_uniq, v_account, + v_container, v_object, version) sizes.append(s) hashmaps.append(h) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') except IndexError: raise ItemNotFound('Version does not exist') # Reply with the hashmap. - if request.serialization != 'text': + if 'hashmap' in request.GET and request.serialization != 'text': size = sum(sizes) hashmap = sum(hashmaps, []) - d = {'block_size': backend.block_size, 'block_hash': backend.hash_algorithm, 'bytes': size, 'hashes': hashmap} + d = { + 'block_size': request.backend.block_size, + 'block_hash': request.backend.hash_algorithm, + 'bytes': size, + 'hashes': hashmap} if request.serialization == 'xml': d['object'] = v_object data = render_to_string('hashes.xml', d) @@ -578,37 +746,56 @@ def object_read(request, v_account, v_container, v_object): response['Content-Length'] = len(data) return response + request.serialization = 'text' # Unset. return object_data_response(request, sizes, hashmaps, meta) @api_method('PUT', format_allowed=True) def object_write(request, v_account, v_container, v_object): # Normal Response Codes: 201 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # unprocessableEntity (422), # lengthRequired (411), # conflict (409), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) + + # Evaluate conditions. + if request.META.get('HTTP_IF_MATCH') or request.META.get('HTTP_IF_NONE_MATCH'): + try: + meta = request.backend.get_object_meta(request.user_uniq, v_account, + v_container, v_object, 'pithos') + except NotAllowedError: + raise Forbidden('Not allowed') + except NameError: + meta = {} + validate_matching_preconditions(request, meta) + copy_from = request.META.get('HTTP_X_COPY_FROM') move_from = request.META.get('HTTP_X_MOVE_FROM') if copy_from or move_from: - # TODO: Why is this required? Copy this ammount? - content_length = get_content_length(request) + content_length = get_content_length(request) # Required by the API. + src_account = request.META.get('HTTP_X_SOURCE_ACCOUNT') + if not src_account: + src_account = request.user_uniq if move_from: try: src_container, src_name = split_container_object_string(move_from) except ValueError: raise BadRequest('Invalid X-Move-From header') - copy_or_move_object(request, v_account, src_container, src_name, v_container, v_object, move=True) + version_id = copy_or_move_object(request, src_account, src_container, src_name, + v_account, v_container, v_object, move=True) else: try: src_container, src_name = split_container_object_string(copy_from) except ValueError: raise BadRequest('Invalid X-Copy-From header') - copy_or_move_object(request, v_account, src_container, src_name, v_container, v_object, move=False) - return HttpResponse(status=201) + version_id = copy_or_move_object(request, src_account, src_container, src_name, + v_account, v_container, v_object, move=False) + response = HttpResponse(status=201) + response['X-Object-Version'] = version_id + return response meta, permissions, public = get_object_headers(request) content_length = -1 @@ -618,72 +805,136 @@ def object_write(request, v_account, v_container, v_object): if 'Content-Type' not in meta: raise LengthRequired('Missing Content-Type header') - if request.serialization == 'json': + if 'hashmap' in request.GET: + if request.serialization not in ('json', 'xml'): + raise BadRequest('Invalid hashmap format') + data = '' - sock = raw_input_socket(request) - for block in socket_read_iterator(sock, content_length, backend.block_size): + for block in socket_read_iterator(request, content_length, + request.backend.block_size): data = '%s%s' % (data, block) - d = json.loads(data) - if not hasattr(d, '__getitem__'): - raise BadRequest('Invalid data formating') - try: - hashmap = d['hashes'] - size = d['bytes'] - except KeyError: - raise BadRequest('Invalid data formatting') - meta.update({'hash': hashmap_hash(hashmap)}) # Update ETag. - elif request.serialization == 'xml': - #TODO support for xml - raise BadRequest('Format xml is not supported') + + if request.serialization == 'json': + d = json.loads(data) + if not hasattr(d, '__getitem__'): + raise BadRequest('Invalid data formating') + try: + hashmap = d['hashes'] + size = int(d['bytes']) + except: + raise BadRequest('Invalid data formatting') + elif request.serialization == 'xml': + try: + xml = minidom.parseString(data) + obj = xml.getElementsByTagName('object')[0] + size = int(obj.attributes['bytes'].value) + + hashes = xml.getElementsByTagName('hash') + hashmap = [] + for hash in hashes: + hashmap.append(hash.firstChild.data) + except: + raise BadRequest('Invalid data formatting') else: md5 = hashlib.md5() size = 0 hashmap = [] - sock = raw_input_socket(request) - for data in socket_read_iterator(sock, content_length, backend.block_size): + for data in socket_read_iterator(request, content_length, + request.backend.block_size): # TODO: Raise 408 (Request Timeout) if this takes too long. # TODO: Raise 499 (Client Disconnect) if a length is defined and we stop before getting this much data. size += len(data) - hashmap.append(backend.put_block(data)) + hashmap.append(request.backend.put_block(data)) md5.update(data) - meta['hash'] = md5.hexdigest().lower() + meta['ETag'] = md5.hexdigest().lower() etag = request.META.get('HTTP_ETAG') - if etag and parse_etags(etag)[0].lower() != meta['hash']: + if etag and parse_etags(etag)[0].lower() != meta['ETag']: raise UnprocessableEntity('Object ETag does not match') try: - backend.update_object_hashmap(request.user, v_account, v_container, v_object, size, hashmap, meta, True, permissions) + version_id = request.backend.update_object_hashmap(request.user_uniq, + v_account, v_container, v_object, size, hashmap, + 'pithos', meta, True, permissions) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except IndexError, e: - raise Conflict(json.dumps(e.data)) + raise Conflict(simple_list_response(request, e.data)) except NameError: raise ItemNotFound('Container does not exist') except ValueError: raise BadRequest('Invalid sharing header') - except AttributeError, e: - raise Conflict(json.dumps(e.data)) + except QuotaError: + raise RequestEntityTooLarge('Quota exceeded') + if 'ETag' not in meta: + # Update the MD5 after the hashmap, as there may be missing hashes. + # TODO: This will create a new version, even if done synchronously... + etag = hashmap_md5(request, hashmap, size) + meta.update({'ETag': etag}) # Update ETag. + try: + version_id = request.backend.update_object_meta(request.user_uniq, + v_account, v_container, v_object, 'pithos', {'ETag': etag}, False) + except NotAllowedError: + raise Forbidden('Not allowed') if public is not None: try: - backend.update_object_public(request.user, v_account, v_container, v_object, public) + request.backend.update_object_public(request.user_uniq, v_account, + v_container, v_object, public) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') response = HttpResponse(status=201) - response['ETag'] = meta['hash'] + response['ETag'] = meta['ETag'] + response['X-Object-Version'] = version_id return response -@api_method('COPY') +@api_method('POST') +def object_write_form(request, v_account, v_container, v_object): + # Normal Response Codes: 201 + # Error Response Codes: internalServerError (500), + # itemNotFound (404), + # forbidden (403), + # badRequest (400) + + request.upload_handlers = [SaveToBackendHandler(request)] + if not request.FILES.has_key('X-Object-Data'): + raise BadRequest('Missing X-Object-Data field') + file = request.FILES['X-Object-Data'] + + meta = {} + meta['Content-Type'] = file.content_type + meta['ETag'] = file.etag + + try: + version_id = request.backend.update_object_hashmap(request.user_uniq, + v_account, v_container, v_object, file.size, file.hashmap, + 'pithos', meta, True) + except NotAllowedError: + raise Forbidden('Not allowed') + except NameError: + raise ItemNotFound('Container does not exist') + except QuotaError: + raise RequestEntityTooLarge('Quota exceeded') + + response = HttpResponse(status=201) + response['ETag'] = meta['ETag'] + response['X-Object-Version'] = version_id + response.content = meta['ETag'] + return response + +@api_method('COPY', format_allowed=True) def object_copy(request, v_account, v_container, v_object): # Normal Response Codes: 201 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) + dest_account = request.META.get('HTTP_DESTINATION_ACCOUNT') + if not dest_account: + dest_account = request.user_uniq dest_path = request.META.get('HTTP_DESTINATION') if not dest_path: raise BadRequest('Missing Destination header') @@ -691,17 +942,36 @@ def object_copy(request, v_account, v_container, v_object): dest_container, dest_name = split_container_object_string(dest_path) except ValueError: raise BadRequest('Invalid Destination header') - copy_or_move_object(request, v_account, v_container, v_object, dest_container, dest_name, move=False) - return HttpResponse(status=201) + + # Evaluate conditions. + if request.META.get('HTTP_IF_MATCH') or request.META.get('HTTP_IF_NONE_MATCH'): + src_version = request.META.get('HTTP_X_SOURCE_VERSION') + try: + meta = request.backend.get_object_meta(request.user_uniq, v_account, + v_container, v_object, 'pithos', src_version) + except NotAllowedError: + raise Forbidden('Not allowed') + except (NameError, IndexError): + raise ItemNotFound('Container or object does not exist') + validate_matching_preconditions(request, meta) + + version_id = copy_or_move_object(request, v_account, v_container, v_object, + dest_account, dest_container, dest_name, move=False) + response = HttpResponse(status=201) + response['X-Object-Version'] = version_id + return response -@api_method('MOVE') +@api_method('MOVE', format_allowed=True) def object_move(request, v_account, v_container, v_object): # Normal Response Codes: 201 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) + dest_account = request.META.get('HTTP_DESTINATION_ACCOUNT') + if not dest_account: + dest_account = request.user_uniq dest_path = request.META.get('HTTP_DESTINATION') if not dest_path: raise BadRequest('Missing Destination header') @@ -709,16 +979,31 @@ def object_move(request, v_account, v_container, v_object): dest_container, dest_name = split_container_object_string(dest_path) except ValueError: raise BadRequest('Invalid Destination header') - copy_or_move_object(request, v_account, v_container, v_object, dest_container, dest_name, move=True) - return HttpResponse(status=201) + + # Evaluate conditions. + if request.META.get('HTTP_IF_MATCH') or request.META.get('HTTP_IF_NONE_MATCH'): + try: + meta = request.backend.get_object_meta(request.user_uniq, v_account, + v_container, v_object, 'pithos') + except NotAllowedError: + raise Forbidden('Not allowed') + except NameError: + raise ItemNotFound('Container or object does not exist') + validate_matching_preconditions(request, meta) + + version_id = copy_or_move_object(request, v_account, v_container, v_object, + dest_account, dest_container, dest_name, move=True) + response = HttpResponse(status=201) + response['X-Object-Version'] = version_id + return response -@api_method('POST') +@api_method('POST', format_allowed=True) def object_update(request, v_account, v_container, v_object): # Normal Response Codes: 202, 204 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # conflict (409), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) meta, permissions, public = get_object_headers(request) @@ -727,48 +1012,61 @@ def object_update(request, v_account, v_container, v_object): del(meta['Content-Type']) # Do not allow changing the Content-Type. try: - prev_meta = backend.get_object_meta(request.user, v_account, v_container, v_object) + prev_meta = request.backend.get_object_meta(request.user_uniq, v_account, + v_container, v_object, 'pithos') except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') - # If replacing, keep previous values of 'Content-Type' and 'hash'. + + # Evaluate conditions. + if request.META.get('HTTP_IF_MATCH') or request.META.get('HTTP_IF_NONE_MATCH'): + validate_matching_preconditions(request, prev_meta) + + # If replacing, keep previous values of 'Content-Type' and 'ETag'. replace = True if 'update' in request.GET: replace = False if replace: - for k in ('Content-Type', 'hash'): + for k in ('Content-Type', 'ETag'): if k in prev_meta: meta[k] = prev_meta[k] - # A Content-Type header indicates data updates. - if not content_type or content_type != 'application/octet-stream': + # A Content-Type or X-Source-Object header indicates data updates. + src_object = request.META.get('HTTP_X_SOURCE_OBJECT') + if (not content_type or content_type != 'application/octet-stream') and not src_object: + response = HttpResponse(status=202) + # Do permissions first, as it may fail easier. if permissions is not None: try: - backend.update_object_permissions(request.user, v_account, v_container, v_object, permissions) + request.backend.update_object_permissions(request.user_uniq, + v_account, v_container, v_object, permissions) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') except ValueError: raise BadRequest('Invalid sharing header') - except AttributeError, e: - raise Conflict(json.dumps(e.data)) if public is not None: try: - backend.update_object_public(request.user, v_account, v_container, v_object, public) + request.backend.update_object_public(request.user_uniq, v_account, + v_container, v_object, public) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') - try: - backend.update_object_meta(request.user, v_account, v_container, v_object, meta, replace) - except NotAllowedError: - raise Unauthorized('Access denied') - except NameError: - raise ItemNotFound('Object does not exist') - return HttpResponse(status=202) + if meta or replace: + try: + version_id = request.backend.update_object_meta(request.user_uniq, + v_account, v_container, v_object, 'pithos', meta, replace) + except NotAllowedError: + raise Forbidden('Not allowed') + except NameError: + raise ItemNotFound('Object does not exist') + response['X-Object-Version'] = version_id + + return response # Single range update. Range must be in Content-Range. # Based on: http://code.google.com/p/gears/wiki/ContentRangePostProposal @@ -779,15 +1077,12 @@ def object_update(request, v_account, v_container, v_object): ranges = get_content_range(request) if not ranges: raise RangeNotSatisfiable('Invalid Content-Range header') - # Require either a Content-Length, or 'chunked' Transfer-Encoding. - content_length = -1 - if request.META.get('HTTP_TRANSFER_ENCODING') != 'chunked': - content_length = get_content_length(request) try: - size, hashmap = backend.get_object_hashmap(request.user, v_account, v_container, v_object) + size, hashmap = request.backend.get_object_hashmap(request.user_uniq, + v_account, v_container, v_object) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') @@ -796,62 +1091,137 @@ def object_update(request, v_account, v_container, v_object): offset = size elif offset > size: raise RangeNotSatisfiable('Supplied offset is beyond object limits') - if length is None or content_length == -1: - length = content_length # Nevermind the error. - elif length != content_length: - raise BadRequest('Content length does not match range length') + if src_object: + src_account = request.META.get('HTTP_X_SOURCE_ACCOUNT') + if not src_account: + src_account = request.user_uniq + src_container, src_name = split_container_object_string(src_object) + src_version = request.META.get('HTTP_X_SOURCE_VERSION') + try: + src_size, src_hashmap = request.backend.get_object_hashmap(request.user_uniq, + src_account, src_container, src_name, src_version) + except NotAllowedError: + raise Forbidden('Not allowed') + except NameError: + raise ItemNotFound('Source object does not exist') + + if length is None: + length = src_size + elif length > src_size: + raise BadRequest('Object length is smaller than range length') + else: + # Require either a Content-Length, or 'chunked' Transfer-Encoding. + content_length = -1 + if request.META.get('HTTP_TRANSFER_ENCODING') != 'chunked': + content_length = get_content_length(request) + + if length is None: + length = content_length + else: + if content_length == -1: + # TODO: Get up to length bytes in chunks. + length = content_length + elif length != content_length: + raise BadRequest('Content length does not match range length') if total is not None and (total != size or offset >= size or (length > 0 and offset + length >= size)): raise RangeNotSatisfiable('Supplied range will change provided object limits') - sock = raw_input_socket(request) - data = '' - for d in socket_read_iterator(sock, length, backend.block_size): - # TODO: Raise 408 (Request Timeout) if this takes too long. - # TODO: Raise 499 (Client Disconnect) if a length is defined and we stop before getting this much data. - data += d - bytes = put_object_block(hashmap, data, offset) - offset += bytes - data = data[bytes:] - if len(data) > 0: - put_object_block(hashmap, data, offset) + dest_bytes = request.META.get('HTTP_X_OBJECT_BYTES') + if dest_bytes is not None: + dest_bytes = get_int_parameter(dest_bytes) + if dest_bytes is None: + raise BadRequest('Invalid X-Object-Bytes header') + + if src_object: + if offset % request.backend.block_size == 0: + # Update the hashes only. + sbi = 0 + while length > 0: + bi = int(offset / request.backend.block_size) + bl = min(length, request.backend.block_size) + if bi < len(hashmap): + if bl == request.backend.block_size: + hashmap[bi] = src_hashmap[sbi] + else: + data = request.backend.get_block(src_hashmap[sbi]) + hashmap[bi] = request.backend.update_block(hashmap[bi], + data[:bl], 0) + else: + hashmap.append(src_hashmap[sbi]) + offset += bl + length -= bl + sbi += 1 + else: + data = '' + sbi = 0 + while length > 0: + data += request.backend.get_block(src_hashmap[sbi]) + if length < request.backend.block_size: + data = data[:length] + bytes = put_object_block(request, hashmap, data, offset) + offset += bytes + data = data[bytes:] + length -= bytes + sbi += 1 + else: + data = '' + for d in socket_read_iterator(request, length, + request.backend.block_size): + # TODO: Raise 408 (Request Timeout) if this takes too long. + # TODO: Raise 499 (Client Disconnect) if a length is defined and we stop before getting this much data. + data += d + bytes = put_object_block(request, hashmap, data, offset) + offset += bytes + data = data[bytes:] + if len(data) > 0: + put_object_block(request, hashmap, data, offset) if offset > size: size = offset - meta.update({'hash': hashmap_hash(hashmap)}) # Update ETag. + if dest_bytes is not None and dest_bytes < size: + size = dest_bytes + hashmap = hashmap[:(int((size - 1) / request.backend.block_size) + 1)] + meta.update({'ETag': hashmap_md5(request, hashmap, size)}) # Update ETag. try: - backend.update_object_hashmap(request.user, v_account, v_container, v_object, size, hashmap, meta, replace, permissions) + version_id = request.backend.update_object_hashmap(request.user_uniq, + v_account, v_container, v_object, size, hashmap, + 'pithos', meta, replace, permissions) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Container does not exist') except ValueError: raise BadRequest('Invalid sharing header') - except AttributeError, e: - raise Conflict(json.dumps(e.data)) + except QuotaError: + raise RequestEntityTooLarge('Quota exceeded') if public is not None: try: - backend.update_object_public(request.user, v_account, v_container, v_object, public) + request.backend.update_object_public(request.user_uniq, v_account, + v_container, v_object, public) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') response = HttpResponse(status=204) - response['ETag'] = meta['hash'] + response['ETag'] = meta['ETag'] + response['X-Object-Version'] = version_id return response @api_method('DELETE') def object_delete(request, v_account, v_container, v_object): # Normal Response Codes: 204 - # Error Response Codes: serviceUnavailable (503), + # Error Response Codes: internalServerError (500), # itemNotFound (404), - # unauthorized (401), + # forbidden (403), # badRequest (400) + until = get_int_parameter(request.GET.get('until')) try: - backend.delete_object(request.user, v_account, v_container, v_object) + request.backend.delete_object(request.user_uniq, v_account, v_container, + v_object, until) except NotAllowedError: - raise Unauthorized('Access denied') + raise Forbidden('Not allowed') except NameError: raise ItemNotFound('Object does not exist') return HttpResponse(status=204)