import time
import sqlite3
import logging
-import types
import hashlib
-import shutil
-import pickle
-
-from base import BaseBackend
+import binascii
+from base import NotAllowedError, BaseBackend
+from lib.hashfiler import Mapper, Blocker
+from django.utils.encoding import smart_unicode, smart_str
logger = logging.getLogger(__name__)
+def backend_method(func=None, autocommit=1):
+ if func is None:
+ def fn(func):
+ return backend_method(func, autocommit)
+ return fn
+
+ if not autocommit:
+ return func
+ def fn(self, *args, **kw):
+ self.con.execute('begin deferred')
+ try:
+ ret = func(self, *args, **kw)
+ self.con.commit()
+ return ret
+ except:
+ self.con.rollback()
+ raise
+ return fn
+
class SimpleBackend(BaseBackend):
"""A simple backend.
Uses SQLite for storage.
"""
- # TODO: Automatic/manual clean-up after a time interval.
+ # TODO: Create account if not present in all functions.
- def __init__(self, db):
- self.hash_algorithm = 'sha1'
- self.block_size = 128 * 1024 # 128KB
+ def __init__(self, db, db_options):
+ self.hash_algorithm = 'sha256'
+ self.block_size = 4 * 1024 * 1024 # 4MB
+
+ self.default_policy = {'quota': 0, 'versioning': 'auto'}
basepath = os.path.split(db)[0]
if basepath and not os.path.exists(basepath):
os.makedirs(basepath)
+ if not os.path.isdir(basepath):
+ raise RuntimeError("Cannot open database at '%s'" % (db,))
+
+ self.con = sqlite3.connect(basepath + '/db', check_same_thread=False)
+
+ sql = '''pragma foreign_keys = on'''
+ self.con.execute(sql)
- self.con = sqlite3.connect(db, check_same_thread=False)
sql = '''create table if not exists versions (
version_id integer primary key,
name text,
- tstamp datetime default current_timestamp,
+ user text,
+ tstamp integer not null,
size integer default 0,
hide integer default 0)'''
self.con.execute(sql)
sql = '''create table if not exists metadata (
- version_id integer, key text, value text, primary key (version_id, key))'''
+ version_id integer,
+ key text,
+ value text,
+ primary key (version_id, key)
+ foreign key (version_id) references versions(version_id)
+ on delete cascade)'''
self.con.execute(sql)
- sql = '''create table if not exists blocks (
- block_id text, data blob, primary key (block_id))'''
+ sql = '''create table if not exists policy (
+ name text, key text, value text, primary key (name, key))'''
self.con.execute(sql)
- sql = '''create table if not exists hashmaps (
- version_id integer, pos integer, block_id text, primary key (version_id, pos))'''
+
+ # Access control tables.
+ sql = '''create table if not exists groups (
+ account text, gname text, user text)'''
self.con.execute(sql)
sql = '''create table if not exists permissions (
- name text, read text, write text, primary key (name))'''
+ name text, op text, user text)'''
+ self.con.execute(sql)
+ sql = '''create table if not exists public (
+ name text, primary key (name))'''
self.con.execute(sql)
+
self.con.commit()
+
+ params = {'blocksize': self.block_size,
+ 'blockpath': basepath + '/blocks',
+ 'hashtype': self.hash_algorithm}
+ self.blocker = Blocker(**params)
+
+ params = {'mappath': basepath + '/maps',
+ 'namelen': self.blocker.hashlen}
+ self.mapper = Mapper(**params)
- def delete_account(self, user, account):
- """Delete the account with the given name."""
+ @backend_method
+ def list_accounts(self, user, marker=None, limit=10000):
+ """Return a list of accounts the user can access."""
- logger.debug("delete_account: %s", account)
- count, bytes, tstamp = self._get_pathstats(account)
- if count > 0:
- raise IndexError('Account is not empty')
- self._del_path(account) # Point of no return.
+ allowed = self._allowed_accounts(user)
+ start, limit = self._list_limits(allowed, marker, limit)
+ return allowed[start:start + limit]
+ @backend_method
def get_account_meta(self, user, account, until=None):
"""Return a dictionary with the account metadata."""
logger.debug("get_account_meta: %s %s", account, until)
+ if user != account:
+ if until or account not in self._allowed_accounts(user):
+ raise NotAllowedError
+ else:
+ self._create_account(user, account)
try:
version_id, mtime = self._get_accountinfo(account, until)
except NameError:
+ # Account does not exist before until.
version_id = None
- mtime = 0
+ mtime = until
count, bytes, tstamp = self._get_pathstats(account, until)
if mtime > tstamp:
tstamp = mtime
row = c.fetchone()
count = row[0]
- meta = self._get_metadata(account, version_id)
- meta.update({'name': account, 'count': count, 'bytes': bytes})
- if modified:
- meta.update({'modified': modified})
- if until is not None:
- meta.update({'until_timestamp': tstamp})
+ if user != account:
+ meta = {'name': account}
+ else:
+ meta = self._get_metadata(account, version_id)
+ meta.update({'name': account, 'count': count, 'bytes': bytes})
+ if until is not None:
+ meta.update({'until_timestamp': tstamp})
+ meta.update({'modified': modified})
return meta
+ @backend_method
def update_account_meta(self, user, account, meta, replace=False):
"""Update the metadata associated with the account."""
logger.debug("update_account_meta: %s %s %s", account, meta, replace)
- self._put_metadata(account, meta, replace)
-
- def list_containers(self, user, account, marker=None, limit=10000, until=None):
- """Return a list of containers existing under an account."""
-
- logger.debug("list_containers: %s %s %s %s", account, marker, limit, until)
- return self._list_objects(account, '', '/', marker, limit, False, [], until)
-
- def put_container(self, user, account, container):
- """Create a new container with the given name."""
-
- logger.debug("put_container: %s %s", account, container)
+ if user != account:
+ raise NotAllowedError
+ self._put_metadata(user, account, meta, replace, False)
+
+ @backend_method
+ def get_account_groups(self, user, account):
+ """Return a dictionary with the user groups defined for this account."""
+
+ logger.debug("get_account_groups: %s", account)
+ if user != account:
+ if account not in self._allowed_accounts(user):
+ raise NotAllowedError
+ return {}
+ self._create_account(user, account)
+ return self._get_groups(account)
+
+ @backend_method
+ def update_account_groups(self, user, account, groups, replace=False):
+ """Update the groups associated with the account."""
+
+ logger.debug("update_account_groups: %s %s %s", account, groups, replace)
+ if user != account:
+ raise NotAllowedError
+ self._create_account(user, account)
+ self._check_groups(groups)
+ self._put_groups(account, groups, replace)
+
+ @backend_method
+ def put_account(self, user, account):
+ """Create a new account with the given name."""
+
+ logger.debug("put_account: %s", account)
+ if user != account:
+ raise NotAllowedError
try:
- path, version_id, mtime = self._get_containerinfo(account, container)
+ version_id, mtime = self._get_accountinfo(account)
except NameError:
- path = os.path.join(account, container)
- version_id = self._put_version(path)
+ pass
else:
- raise NameError('Container already exists')
+ raise NameError('Account already exists')
+ self._put_version(account, user)
- def delete_container(self, user, account, container):
- """Delete the container with the given name."""
+ @backend_method
+ def delete_account(self, user, account):
+ """Delete the account with the given name."""
- logger.debug("delete_container: %s %s", account, container)
- path, version_id, mtime = self._get_containerinfo(account, container)
- count, bytes, tstamp = self._get_pathstats(path)
+ logger.debug("delete_account: %s", account)
+ if user != account:
+ raise NotAllowedError
+ count = self._get_pathstats(account)[0]
if count > 0:
- raise IndexError('Container is not empty')
- self._del_path(path) # Point of no return.
- self._copy_version(account, account, True, True) # New account version.
+ raise IndexError('Account is not empty')
+ sql = 'delete from versions where name = ?'
+ self.con.execute(sql, (account,))
+ self._del_groups(account)
+
+ @backend_method
+ def list_containers(self, user, account, marker=None, limit=10000, shared=False, until=None):
+ """Return a list of containers existing under an account."""
+
+ logger.debug("list_containers: %s %s %s %s", account, marker, limit, until)
+ if user != account:
+ if until or account not in self._allowed_accounts(user):
+ raise NotAllowedError
+ allowed = self._allowed_containers(user, account)
+ start, limit = self._list_limits(allowed, marker, limit)
+ return allowed[start:start + limit]
+ else:
+ if shared:
+ allowed = [x.split('/', 2)[1] for x in self._shared_paths(account)]
+ start, limit = self._list_limits(allowed, marker, limit)
+ return allowed[start:start + limit]
+ return [x[0] for x in self._list_objects(account, '', '/', marker, limit, False, [], until)]
+ @backend_method
def get_container_meta(self, user, account, container, until=None):
"""Return a dictionary with the container metadata."""
logger.debug("get_container_meta: %s %s %s", account, container, until)
-
+ if user != account:
+ if until or container not in self._allowed_containers(user, account):
+ raise NotAllowedError
path, version_id, mtime = self._get_containerinfo(account, container, until)
count, bytes, tstamp = self._get_pathstats(path, until)
if mtime > tstamp:
if mtime > modified:
modified = mtime
- meta = self._get_metadata(path, version_id)
- meta.update({'name': container, 'count': count, 'bytes': bytes, 'modified': modified})
- if until is not None:
- meta.update({'until_timestamp': tstamp})
+ if user != account:
+ meta = {'name': container, 'modified': modified}
+ else:
+ meta = self._get_metadata(path, version_id)
+ meta.update({'name': container, 'count': count, 'bytes': bytes, 'modified': modified})
+ if until is not None:
+ meta.update({'until_timestamp': tstamp})
return meta
+ @backend_method
def update_container_meta(self, user, account, container, meta, replace=False):
"""Update the metadata associated with the container."""
logger.debug("update_container_meta: %s %s %s %s", account, container, meta, replace)
+ if user != account:
+ raise NotAllowedError
+ path, version_id, mtime = self._get_containerinfo(account, container)
+ self._put_metadata(user, path, meta, replace, False)
+
+ @backend_method
+ def get_container_policy(self, user, account, container):
+ """Return a dictionary with the container policy."""
+
+ logger.debug("get_container_policy: %s %s", account, container)
+ if user != account:
+ if container not in self._allowed_containers(user, account):
+ raise NotAllowedError
+ return {}
+ path = self._get_containerinfo(account, container)[0]
+ return self._get_policy(path)
+
+ @backend_method
+ def update_container_policy(self, user, account, container, policy, replace=False):
+ """Update the policy associated with the account."""
+
+ logger.debug("update_container_policy: %s %s %s %s", account, container, policy, replace)
+ if user != account:
+ raise NotAllowedError
+ path = self._get_containerinfo(account, container)[0]
+ self._check_policy(policy)
+ if replace:
+ for k, v in self.default_policy.iteritems():
+ if k not in policy:
+ policy[k] = v
+ for k, v in policy.iteritems():
+ sql = 'insert or replace into policy (name, key, value) values (?, ?, ?)'
+ self.con.execute(sql, (path, k, v))
+
+ @backend_method
+ def put_container(self, user, account, container, policy=None):
+ """Create a new container with the given name."""
+
+ logger.debug("put_container: %s %s %s", account, container, policy)
+ if user != account:
+ raise NotAllowedError
+ try:
+ path, version_id, mtime = self._get_containerinfo(account, container)
+ except NameError:
+ pass
+ else:
+ raise NameError('Container already exists')
+ if policy:
+ self._check_policy(policy)
+ path = '/'.join((account, container))
+ version_id = self._put_version(path, user)[0]
+ for k, v in self.default_policy.iteritems():
+ if k not in policy:
+ policy[k] = v
+ for k, v in policy.iteritems():
+ sql = 'insert or replace into policy (name, key, value) values (?, ?, ?)'
+ self.con.execute(sql, (path, k, v))
+
+ @backend_method
+ def delete_container(self, user, account, container, until=None):
+ """Delete/purge the container with the given name."""
+
+ logger.debug("delete_container: %s %s %s", account, container, until)
+ if user != account:
+ raise NotAllowedError
path, version_id, mtime = self._get_containerinfo(account, container)
- self._put_metadata(path, meta, replace)
+
+ if until is not None:
+ sql = '''select version_id from versions where name like ? and tstamp <= ?
+ and version_id not in (select version_id from (%s))'''
+ sql = sql % self._sql_until() # Do not delete current versions.
+ c = self.con.execute(sql, (path + '/%', until))
+ for v in [x[0] for x in c.fetchall()]:
+ self._del_version(v)
+ return
+
+ count = self._get_pathstats(path)[0]
+ if count > 0:
+ raise IndexError('Container is not empty')
+ sql = 'delete from versions where name = ? or name like ?' # May contain hidden items.
+ self.con.execute(sql, (path, path + '/%',))
+ sql = 'delete from policy where name = ?'
+ self.con.execute(sql, (path,))
+ self._copy_version(user, account, account, True, False) # New account version (for timestamp update).
- def list_objects(self, user, account, container, prefix='', delimiter=None, marker=None, limit=10000, virtual=True, keys=[], until=None):
+ @backend_method
+ def list_objects(self, user, account, container, prefix='', delimiter=None, marker=None, limit=10000, virtual=True, keys=[], shared=False, until=None):
"""Return a list of objects existing under a container."""
- logger.debug("list_objects: %s %s %s %s %s %s %s", account, container, prefix, delimiter, marker, limit, until)
+ logger.debug("list_objects: %s %s %s %s %s %s %s %s %s %s", account, container, prefix, delimiter, marker, limit, virtual, keys, shared, until)
+ allowed = []
+ if user != account:
+ if until:
+ raise NotAllowedError
+ allowed = self._allowed_paths(user, '/'.join((account, container)))
+ if not allowed:
+ raise NotAllowedError
+ else:
+ if shared:
+ allowed = self._shared_paths('/'.join((account, container)))
path, version_id, mtime = self._get_containerinfo(account, container, until)
- return self._list_objects(path, prefix, delimiter, marker, limit, virtual, keys, until)
+ return self._list_objects(path, prefix, delimiter, marker, limit, virtual, keys, until, allowed)
+ @backend_method
def list_object_meta(self, user, account, container, until=None):
"""Return a list with all the container's object meta keys."""
logger.debug("list_object_meta: %s %s %s", account, container, until)
+ allowed = []
+ if user != account:
+ if until:
+ raise NotAllowedError
+ allowed = self._allowed_paths(user, '/'.join((account, container)))
+ if not allowed:
+ raise NotAllowedError
path, version_id, mtime = self._get_containerinfo(account, container, until)
sql = '''select distinct m.key from (%s) o, metadata m
where m.version_id = o.version_id and o.name like ?'''
sql = sql % self._sql_until(until)
- c = self.con.execute(sql, (path + '/%',))
+ param = (path + '/%',)
+ if allowed:
+ for x in allowed:
+ sql += ' and o.name like ?'
+ param += (x,)
+ c = self.con.execute(sql, param)
return [x[0] for x in c.fetchall()]
+ @backend_method
def get_object_meta(self, user, account, container, name, version=None):
"""Return a dictionary with the object metadata."""
logger.debug("get_object_meta: %s %s %s %s", account, container, name, version)
- path, version_id, mtime, size = self._get_objectinfo(account, container, name, version)
+ self._can_read(user, account, container, name)
+ path, version_id, muser, mtime, size = self._get_objectinfo(account, container, name, version)
if version is None:
modified = mtime
else:
- modified = self._get_version(path, version)[1] # Overall last modification
+ modified = self._get_version(path, version)[2] # Overall last modification
meta = self._get_metadata(path, version_id)
- meta.update({'name': name, 'bytes': size, 'version': version_id, 'version_timestamp': mtime, 'modified': modified})
+ meta.update({'name': name, 'bytes': size})
+ meta.update({'version': version_id, 'version_timestamp': mtime})
+ meta.update({'modified': modified, 'modified_by': muser})
return meta
+ @backend_method
def update_object_meta(self, user, account, container, name, meta, replace=False):
"""Update the metadata associated with the object."""
logger.debug("update_object_meta: %s %s %s %s %s", account, container, name, meta, replace)
- path, version_id, mtime, size = self._get_objectinfo(account, container, name)
- self._put_metadata(path, meta, replace)
+ self._can_write(user, account, container, name)
+ path, version_id, muser, mtime, size = self._get_objectinfo(account, container, name)
+ return self._put_metadata(user, path, meta, replace)
+ @backend_method
def get_object_permissions(self, user, account, container, name):
- """Return a dictionary with the object permissions."""
+ """Return the path from which this object gets its permissions from,\
+ along with a dictionary containing the permissions."""
logger.debug("get_object_permissions: %s %s %s", account, container, name)
+ self._can_read(user, account, container, name)
path = self._get_objectinfo(account, container, name)[0]
return self._get_permissions(path)
+ @backend_method
def update_object_permissions(self, user, account, container, name, permissions):
"""Update the permissions associated with the object."""
logger.debug("update_object_permissions: %s %s %s %s", account, container, name, permissions)
+ if user != account:
+ raise NotAllowedError
path = self._get_objectinfo(account, container, name)[0]
r, w = self._check_permissions(path, permissions)
self._put_permissions(path, r, w)
+ @backend_method
+ def get_object_public(self, user, account, container, name):
+ """Return the public URL of the object if applicable."""
+
+ logger.debug("get_object_public: %s %s %s", account, container, name)
+ self._can_read(user, account, container, name)
+ path = self._get_objectinfo(account, container, name)[0]
+ if self._get_public(path):
+ return '/public/' + path
+ return None
+
+ @backend_method
+ def update_object_public(self, user, account, container, name, public):
+ """Update the public status of the object."""
+
+ logger.debug("update_object_public: %s %s %s %s", account, container, name, public)
+ self._can_write(user, account, container, name)
+ path = self._get_objectinfo(account, container, name)[0]
+ self._put_public(path, public)
+
+ @backend_method
def get_object_hashmap(self, user, account, container, name, version=None):
"""Return the object's size and a list with partial hashes."""
logger.debug("get_object_hashmap: %s %s %s %s", account, container, name, version)
- path, version_id, mtime, size = self._get_objectinfo(account, container, name, version)
- sql = 'select block_id from hashmaps where version_id = ? order by pos asc'
- c = self.con.execute(sql, (version_id,))
- hashmap = [x[0] for x in c.fetchall()]
- return size, hashmap
+ self._can_read(user, account, container, name)
+ path, version_id, muser, mtime, size = self._get_objectinfo(account, container, name, version)
+ hashmap = self.mapper.map_retr(version_id)
+ return size, [binascii.hexlify(x) for x in hashmap]
- def update_object_hashmap(self, user, account, container, name, size, hashmap, meta={}, replace_meta=False, permissions={}):
+ @backend_method
+ def update_object_hashmap(self, user, account, container, name, size, hashmap, meta={}, replace_meta=False, permissions=None):
"""Create/update an object with the specified size and partial hashes."""
logger.debug("update_object_hashmap: %s %s %s %s %s", account, container, name, size, hashmap)
+ if permissions is not None and user != account:
+ raise NotAllowedError
+ self._can_write(user, account, container, name)
+ missing = self.blocker.block_ping([binascii.unhexlify(x) for x in hashmap])
+ if missing:
+ ie = IndexError()
+ ie.data = missing
+ raise ie
path = self._get_containerinfo(account, container)[0]
- path = os.path.join(path, name)
- if permissions:
+ path = '/'.join((path, name))
+ if permissions is not None:
r, w = self._check_permissions(path, permissions)
- src_version_id, dest_version_id = self._copy_version(path, path, not replace_meta, False)
+ src_version_id, dest_version_id = self._copy_version(user, path, path, not replace_meta, False)
sql = 'update versions set size = ? where version_id = ?'
self.con.execute(sql, (size, dest_version_id))
- # TODO: Check for block_id existence.
- for i in range(len(hashmap)):
- sql = 'insert or replace into hashmaps (version_id, pos, block_id) values (?, ?, ?)'
- self.con.execute(sql, (dest_version_id, i, hashmap[i]))
+ self.mapper.map_stor(dest_version_id, [binascii.unhexlify(x) for x in hashmap])
for k, v in meta.iteritems():
sql = 'insert or replace into metadata (version_id, key, value) values (?, ?, ?)'
self.con.execute(sql, (dest_version_id, k, v))
- if permissions:
- sql = 'insert or replace into permissions (name, read, write) values (?, ?, ?)'
- self.con.execute(sql, (path, r, w))
- self.con.commit()
+ if permissions is not None:
+ self._put_permissions(path, r, w)
+ return dest_version_id
- def copy_object(self, user, account, src_container, src_name, dest_container, dest_name, dest_meta={}, replace_meta=False, permissions={}, src_version=None):
+ @backend_method
+ def copy_object(self, user, account, src_container, src_name, dest_container, dest_name, dest_meta={}, replace_meta=False, permissions=None, src_version=None):
"""Copy an object's data and metadata."""
logger.debug("copy_object: %s %s %s %s %s %s %s %s %s", account, src_container, src_name, dest_container, dest_name, dest_meta, replace_meta, permissions, src_version)
+ if permissions is not None and user != account:
+ raise NotAllowedError
+ self._can_read(user, account, src_container, src_name)
+ self._can_write(user, account, dest_container, dest_name)
self._get_containerinfo(account, src_container)
if src_version is None:
src_path = self._get_objectinfo(account, src_container, src_name)[0]
else:
- src_path = os.path.join(account, src_container, src_name)
+ src_path = '/'.join((account, src_container, src_name))
dest_path = self._get_containerinfo(account, dest_container)[0]
- dest_path = os.path.join(dest_path, dest_name)
- if permissions:
+ dest_path = '/'.join((dest_path, dest_name))
+ if permissions is not None:
r, w = self._check_permissions(dest_path, permissions)
- src_version_id, dest_version_id = self._copy_version(src_path, dest_path, not replace_meta, True, src_version)
+ src_version_id, dest_version_id = self._copy_version(user, src_path, dest_path, not replace_meta, True, src_version)
for k, v in dest_meta.iteritems():
sql = 'insert or replace into metadata (version_id, key, value) values (?, ?, ?)'
self.con.execute(sql, (dest_version_id, k, v))
- if permissions:
- sql = 'insert or replace into permissions (name, read, write) values (?, ?, ?)'
- self.con.execute(sql, (dest_path, r, w))
- self.con.commit()
+ if permissions is not None:
+ self._put_permissions(dest_path, r, w)
+ return dest_version_id
- def move_object(self, user, account, src_container, src_name, dest_container, dest_name, dest_meta={}, replace_meta=False, permissions={}):
+ @backend_method
+ def move_object(self, user, account, src_container, src_name, dest_container, dest_name, dest_meta={}, replace_meta=False, permissions=None):
"""Move an object's data and metadata."""
logger.debug("move_object: %s %s %s %s %s %s %s %s", account, src_container, src_name, dest_container, dest_name, dest_meta, replace_meta, permissions)
- self.copy_object(user, account, src_container, src_name, dest_container, dest_name, dest_meta, replace_meta, permissions, None)
+ dest_version_id = self.copy_object(user, account, src_container, src_name, dest_container, dest_name, dest_meta, replace_meta, permissions, None)
self.delete_object(user, account, src_container, src_name)
+ return dest_version_id
- def delete_object(self, user, account, container, name):
- """Delete an object."""
+ @backend_method
+ def delete_object(self, user, account, container, name, until=None):
+ """Delete/purge an object."""
- logger.debug("delete_object: %s %s %s", account, container, name)
- path, version_id, mtime, size = self._get_objectinfo(account, container, name)
- self._put_version(path, 0, 1)
- sql = 'delete from permissions where name = ?'
- self.con.execute(sql, (path,))
- self.con.commit()
+ logger.debug("delete_object: %s %s %s %s", account, container, name, until)
+ if user != account:
+ raise NotAllowedError
+
+ if until is not None:
+ path = '/'.join((account, container, name))
+ sql = '''select version_id from versions where name = ? and tstamp <= ?'''
+ c = self.con.execute(sql, (path, until))
+ for v in [x[0] in c.fetchall()]:
+ self._del_version(v)
+ try:
+ version_id = self._get_version(path)[0]
+ except NameError:
+ pass
+ else:
+ self._del_sharing(path)
+ return
+
+ path = self._get_objectinfo(account, container, name)[0]
+ self._put_version(path, user, 0, 1)
+ self._del_sharing(path)
+ @backend_method
def list_versions(self, user, account, container, name):
"""Return a list of all (version, version_timestamp) tuples for an object."""
logger.debug("list_versions: %s %s %s", account, container, name)
+ self._can_read(user, account, container, name)
# This will even show deleted versions.
- path = os.path.join(account, container, name)
- sql = '''select distinct version_id, strftime('%s', tstamp) from versions where name = ? and hide = 0'''
+ path = '/'.join((account, container, name))
+ sql = '''select distinct version_id, tstamp from versions where name = ? and hide = 0'''
c = self.con.execute(sql, (path,))
return [(int(x[0]), int(x[1])) for x in c.fetchall()]
+ @backend_method(autocommit=0)
def get_block(self, hash):
"""Return a block's data."""
logger.debug("get_block: %s", hash)
- c = self.con.execute('select data from blocks where block_id = ?', (hash,))
- row = c.fetchone()
- if row:
- return str(row[0])
- else:
+ blocks = self.blocker.block_retr((binascii.unhexlify(hash),))
+ if not blocks:
raise NameError('Block does not exist')
+ return blocks[0]
+ @backend_method(autocommit=0)
def put_block(self, data):
- """Create a block and return the hash."""
+ """Store a block and return the hash."""
logger.debug("put_block: %s", len(data))
- h = hashlib.new(self.hash_algorithm)
- h.update(data.rstrip('\x00'))
- hash = h.hexdigest()
- sql = 'insert or ignore into blocks (block_id, data) values (?, ?)'
- self.con.execute(sql, (hash, buffer(data)))
- self.con.commit()
- return hash
+ hashes, absent = self.blocker.block_stor((data,))
+ return binascii.hexlify(hashes[0])
+ @backend_method(autocommit=0)
def update_block(self, hash, data, offset=0):
"""Update a known block and return the hash."""
logger.debug("update_block: %s %s %s", hash, len(data), offset)
if offset == 0 and len(data) == self.block_size:
return self.put_block(data)
- src_data = self.get_block(hash)
- bs = self.block_size
- if offset < 0 or offset > bs or offset + len(data) > bs:
- raise IndexError('Offset or data outside block limits')
- dest_data = src_data[:offset] + data + src_data[offset + len(data):]
- return self.put_block(dest_data)
+ h, e = self.blocker.block_delta(binascii.unhexlify(hash), ((offset, data),))
+ return binascii.hexlify(h)
def _sql_until(self, until=None):
"""Return the sql to get the latest versions until the timestamp given."""
if until is None:
until = int(time.time())
- sql = '''select version_id, name, strftime('%s', tstamp) as tstamp, size from versions v
+ sql = '''select version_id, name, tstamp, size from versions v
where version_id = (select max(version_id) from versions
- where v.name = name and tstamp <= datetime(%s, 'unixepoch'))
+ where v.name = name and tstamp <= %s)
and hide = 0'''
- return sql % ('%s', until)
+ return sql % (until,)
def _get_pathstats(self, path, until=None):
"""Return count and sum of size of everything under path and latest timestamp."""
def _get_version(self, path, version=None):
if version is None:
- sql = '''select version_id, strftime('%s', tstamp), size, hide from versions where name = ?
+ sql = '''select version_id, user, tstamp, size, hide from versions where name = ?
order by version_id desc limit 1'''
c = self.con.execute(sql, (path,))
row = c.fetchone()
- if not row or int(row[3]):
+ if not row or int(row[4]):
raise NameError('Object does not exist')
else:
- sql = '''select version_id, strftime('%s', tstamp), size from versions where name = ?
+ # The database (sqlite) will not complain if the version is not an integer.
+ sql = '''select version_id, user, tstamp, size from versions where name = ?
and version_id = ?'''
c = self.con.execute(sql, (path, version))
row = c.fetchone()
if not row:
raise IndexError('Version does not exist')
- return str(row[0]), int(row[1]), int(row[2])
+ return smart_str(row[0]), smart_str(row[1]), int(row[2]), int(row[3])
- def _put_version(self, path, size=0, hide=0):
- sql = 'insert into versions (name, size, hide) values (?, ?, ?)'
- id = self.con.execute(sql, (path, size, hide)).lastrowid
- self.con.commit()
- return str(id)
+ def _put_version(self, path, user, size=0, hide=0):
+ tstamp = int(time.time())
+ sql = 'insert into versions (name, user, tstamp, size, hide) values (?, ?, ?, ?, ?)'
+ id = self.con.execute(sql, (path, user, tstamp, size, hide)).lastrowid
+ return str(id), tstamp
- def _copy_version(self, src_path, dest_path, copy_meta=True, copy_data=True, src_version=None):
+ def _copy_version(self, user, src_path, dest_path, copy_meta=True, copy_data=True, src_version=None):
if src_version is not None:
- src_version_id, mtime, size = self._get_version(src_path, src_version)
+ src_version_id, muser, mtime, size = self._get_version(src_path, src_version)
else:
# Latest or create from scratch.
try:
- src_version_id, mtime, size = self._get_version(src_path)
+ src_version_id, muser, mtime, size = self._get_version(src_path)
except NameError:
src_version_id = None
size = 0
if not copy_data:
size = 0
- dest_version_id = self._put_version(dest_path, size)
+ dest_version_id = self._put_version(dest_path, user, size)[0]
if copy_meta and src_version_id is not None:
sql = 'insert into metadata select %s, key, value from metadata where version_id = ?'
sql = sql % dest_version_id
self.con.execute(sql, (src_version_id,))
if copy_data and src_version_id is not None:
- sql = 'insert into hashmaps select %s, pos, block_id from hashmaps where version_id = ?'
- sql = sql % dest_version_id
- self.con.execute(sql, (src_version_id,))
- self.con.commit()
+ # TODO: Copy properly.
+ hashmap = self.mapper.map_retr(src_version_id)
+ self.mapper.map_stor(dest_version_id, hashmap)
return src_version_id, dest_version_id
def _get_versioninfo(self, account, container, name, until=None):
p = p[:p.index(None)]
except ValueError:
pass
- path = os.path.join(*p)
+ path = '/'.join(p)
sql = '''select version_id, tstamp, size from (%s) where name = ?'''
sql = sql % self._sql_until(until)
c = self.con.execute(sql, (path,))
raise NameError('Container does not exist')
def _get_objectinfo(self, account, container, name, version=None):
- path = os.path.join(account, container, name)
- version_id, mtime, size = self._get_version(path, version)
- return path, version_id, mtime, size
+ path = '/'.join((account, container, name))
+ version_id, muser, mtime, size = self._get_version(path, version)
+ return path, version_id, muser, mtime, size
+
+ def _create_account(self, user, account):
+ try:
+ self._get_accountinfo(account)
+ except NameError:
+ self._put_version(account, user)
def _get_metadata(self, path, version):
sql = 'select key, value from metadata where version_id = ?'
c = self.con.execute(sql, (version,))
return dict(c.fetchall())
- def _put_metadata(self, path, meta, replace=False):
+ def _put_metadata(self, user, path, meta, replace=False, copy_data=True):
"""Create a new version and store metadata."""
- src_version_id, dest_version_id = self._copy_version(path, path, not replace, True)
+ src_version_id, dest_version_id = self._copy_version(user, path, path, not replace, copy_data)
for k, v in meta.iteritems():
- sql = 'insert or replace into metadata (version_id, key, value) values (?, ?, ?)'
- self.con.execute(sql, (dest_version_id, k, v))
- self.con.commit()
-
- def _can_read(self, user, path):
- return True
-
- def _can_write(self, user, path):
- return True
-
- def _check_permissions(self, path, permissions):
- # Check for existing permissions.
- sql = '''select name from permissions
- where name != ? and (name like ? or ? like name || ?)'''
- c = self.con.execute(sql, (path, path + '%', path, '%'))
- rows = c.fetchall()
- if rows:
- raise AttributeError('Permissions already set')
-
- # Format given permissions set.
- r = permissions.get('read', [])
- w = permissions.get('write', [])
- if True in [False or ',' in x for x in r]:
- raise ValueError('Bad characters in read permissions')
- if True in [False or ',' in x for x in w]:
- raise ValueError('Bad characters in write permissions')
- r = ','.join(r)
- w = ','.join(w)
- if 'private' in permissions:
- r = ''
- w = ''
- return r, w
-
- def _get_permissions(self, path):
- sql = 'select read, write from permissions where name = ?'
+ if not replace and v == '':
+ sql = 'delete from metadata where version_id = ? and key = ?'
+ self.con.execute(sql, (dest_version_id, k))
+ else:
+ sql = 'insert or replace into metadata (version_id, key, value) values (?, ?, ?)'
+ self.con.execute(sql, (dest_version_id, k, v))
+ return dest_version_id
+
+ def _check_policy(self, policy):
+ for k in policy.keys():
+ if policy[k] == '':
+ policy[k] = self.default_policy.get(k)
+ for k, v in policy.iteritems():
+ if k == 'quota':
+ q = int(v) # May raise ValueError.
+ if q < 0:
+ raise ValueError
+ elif k == 'versioning':
+ if v not in ['auto', 'manual', 'none']:
+ raise ValueError
+ else:
+ raise ValueError
+
+ def _get_policy(self, path):
+ sql = 'select key, value from policy where name = ?'
c = self.con.execute(sql, (path,))
- row = c.fetchone()
- if not row:
- return {}
-
- r, w = row
- if r == '' and w == '':
- return {'private': True}
- ret = {}
- if w != '':
- ret['write'] = w.split(',')
- if r != '':
- ret['read'] = r.split(',')
- return ret
+ return dict(c.fetchall())
- def _put_permissions(self, path, r, w):
- sql = 'insert or replace into permissions (name, read, write) values (?, ?, ?)'
- self.con.execute(sql, (path, r, w))
- self.con.commit()
+ def _list_limits(self, listing, marker, limit):
+ start = 0
+ if marker:
+ try:
+ start = listing.index(marker) + 1
+ except ValueError:
+ pass
+ if not limit or limit > 10000:
+ limit = 10000
+ return start, limit
- def _list_objects(self, path, prefix='', delimiter=None, marker=None, limit=10000, virtual=True, keys=[], until=None):
+ def _list_objects(self, path, prefix='', delimiter=None, marker=None, limit=10000, virtual=True, keys=[], until=None, allowed=[]):
cont_prefix = path + '/'
if keys and len(keys) > 0:
sql = '''select distinct o.name, o.version_id from (%s) o, metadata m where o.name like ? and
- m.version_id = o.version_id and m.key in (%s) order by o.name'''
+ m.version_id = o.version_id and m.key in (%s)'''
sql = sql % (self._sql_until(until), ', '.join('?' * len(keys)))
param = (cont_prefix + prefix + '%',) + tuple(keys)
+ if allowed:
+ sql += ' and (' + ' or '.join(('o.name like ?',) * len(allowed)) + ')'
+ param += tuple([x + '%' for x in allowed])
+ sql += ' order by o.name'
else:
- sql = 'select name, version_id from (%s) where name like ? order by name'
+ sql = 'select name, version_id from (%s) where name like ?'
sql = sql % self._sql_until(until)
param = (cont_prefix + prefix + '%',)
+ if allowed:
+ sql += ' and (' + ' or '.join(('name like ?',) * len(allowed)) + ')'
+ param += tuple([x + '%' for x in allowed])
+ sql += ' order by name'
c = self.con.execute(sql, param)
objects = [(x[0][len(cont_prefix):], x[1]) for x in c.fetchall()]
if delimiter:
pseudo_objects.append((pseudo_name, None))
objects = pseudo_objects
- start = 0
- if marker:
- try:
- start = [x[0] for x in objects].index(marker) + 1
- except ValueError:
- pass
- if not limit or limit > 10000:
- limit = 10000
+ start, limit = self._list_limits([x[0] for x in objects], marker, limit)
return objects[start:start + limit]
- def _del_path(self, path):
- sql = '''delete from hashmaps where version_id in
- (select version_id from versions where name = ?)'''
+ def _del_version(self, version):
+ self.mapper.map_remv(version)
+ sql = 'delete from versions where version_id = ?'
+ self.con.execute(sql, (version,))
+
+ # Access control functions.
+
+ def _check_groups(self, groups):
+ # Example follows.
+ # for k, v in groups.iteritems():
+ # if True in [False or ',' in x for x in v]:
+ # raise ValueError('Bad characters in groups')
+ pass
+
+ def _get_groups(self, account):
+ sql = 'select gname, user from groups where account = ?'
+ c = self.con.execute(sql, (account,))
+ groups = {}
+ for gname, user in c.fetchall():
+ if gname not in groups:
+ groups[gname] = []
+ groups[gname].append(user)
+ return groups
+
+ def _put_groups(self, account, groups, replace=False):
+ if replace:
+ self._del_groups(account)
+ for k, v in groups.iteritems():
+ sql = 'delete from groups where account = ? and gname = ?'
+ self.con.execute(sql, (account, k))
+ if v:
+ sql = 'insert into groups (account, gname, user) values (?, ?, ?)'
+ self.con.executemany(sql, [(account, k, x) for x in v])
+
+ def _del_groups(self, account):
+ sql = 'delete from groups where account = ?'
+ self.con.execute(sql, (account,))
+
+ def _check_permissions(self, path, permissions):
+ # Check for existing permissions.
+ sql = '''select name from permissions
+ where name != ? and (name like ? or ? like name || ?)'''
+ c = self.con.execute(sql, (path, path + '%', path, '%'))
+ rows = c.fetchall()
+ if rows:
+ ae = AttributeError()
+ ae.data = rows
+ raise ae
+
+ # Format given permissions.
+ if len(permissions) == 0:
+ return [], []
+ r = permissions.get('read', [])
+ w = permissions.get('write', [])
+ # Examples follow.
+ # if True in [False or ',' in x for x in r]:
+ # raise ValueError('Bad characters in read permissions')
+ # if True in [False or ',' in x for x in w]:
+ # raise ValueError('Bad characters in write permissions')
+ return r, w
+
+ def _get_permissions(self, path):
+ # Check for permissions at path or above.
+ sql = 'select name, op, user from permissions where ? like name || ?'
+ c = self.con.execute(sql, (path, '%'))
+ name = path
+ perms = {} # Return nothing, if nothing is set.
+ for row in c.fetchall():
+ name = row[0]
+ op = row[1]
+ user = row[2]
+ if op not in perms:
+ perms[op] = []
+ perms[op].append(user)
+ return name, perms
+
+ def _put_permissions(self, path, r, w):
+ sql = 'delete from permissions where name = ?'
self.con.execute(sql, (path,))
- sql = '''delete from metadata where version_id in
- (select version_id from versions where name = ?)'''
+ sql = 'insert into permissions (name, op, user) values (?, ?, ?)'
+ if r:
+ self.con.executemany(sql, [(path, 'read', x) for x in r])
+ if w:
+ self.con.executemany(sql, [(path, 'write', x) for x in w])
+
+ def _get_public(self, path):
+ sql = 'select name from public where name = ?'
+ c = self.con.execute(sql, (path,))
+ row = c.fetchone()
+ if not row:
+ return False
+ return True
+
+ def _put_public(self, path, public):
+ if not public:
+ sql = 'delete from public where name = ?'
+ else:
+ sql = 'insert or replace into public (name) values (?)'
self.con.execute(sql, (path,))
- sql = '''delete from versions where name = ?'''
+
+ def _del_sharing(self, path):
+ sql = 'delete from permissions where name = ?'
self.con.execute(sql, (path,))
- sql = '''delete from permissions where name like ?'''
- self.con.execute(sql, (path + '%',)) # Redundant.
- self.con.commit()
+ sql = 'delete from public where name = ?'
+ self.con.execute(sql, (path,))
+
+ def _is_allowed(self, user, account, container, name, op='read'):
+ if smart_unicode(user) == smart_unicode(account):
+ return True
+ path = '/'.join((account, container, name))
+ if op == 'read' and self._get_public(path):
+ return True
+ perm_path, perms = self._get_permissions(path)
+
+ # Expand groups.
+ for x in ('read', 'write'):
+ g_perms = set()
+ for y in perms.get(x, []):
+ if ':' in y:
+ g_account, g_name = y.split(':', 1)
+ groups = self._get_groups(g_account)
+ if g_name in groups.keys():
+ g_perms.update(groups[g_name])
+ else:
+ g_perms.add(y)
+ perms[x] = g_perms
+
+ user = smart_unicode(user, strings_only=True)
+ if op == 'read' and ('*' in perms['read'] or user in perms['read']):
+ return True
+ if '*' in perms['write'] or user in perms['write']:
+ return True
+ return False
+
+ def _can_read(self, user, account, container, name):
+ if not self._is_allowed(user, account, container, name, 'read'):
+ raise NotAllowedError
+
+ def _can_write(self, user, account, container, name):
+ if not self._is_allowed(user, account, container, name, 'write'):
+ raise NotAllowedError
+
+ def _allowed_paths(self, user, prefix=None):
+ sql = '''select distinct name from permissions where (user = ?
+ or user in (select account || ':' || gname from groups where user = ?))'''
+ param = (user, user)
+ if prefix:
+ sql += ' and name like ?'
+ param += (prefix + '/%',)
+ c = self.con.execute(sql, param)
+ return [x[0] for x in c.fetchall()]
+
+ def _allowed_accounts(self, user):
+ allow = set()
+ for path in self._allowed_paths(user):
+ allow.add(path.split('/', 1)[0])
+ return sorted(allow)
+
+ def _allowed_containers(self, user, account):
+ allow = set()
+ for path in self._allowed_paths(user, account):
+ allow.add(path.split('/', 2)[1])
+ return sorted(allow)
+
+ def _shared_paths(self, prefix):
+ sql = 'select distinct name from permissions where name like ?'
+ c = self.con.execute(sql, (prefix + '/%',))
+ return [x[0] for x in c.fetchall()]
projects / pithos / blobdiff