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34 from xfeatures import XFeatures
35 from groups import Groups
36 from public import Public
43 class Permissions(XFeatures, Groups, Public):
45 def __init__(self, **params):
46 XFeatures.__init__(self, **params)
47 Groups.__init__(self, **params)
48 Public.__init__(self, **params)
50 def access_grant(self, path, access, members=()):
51 """Grant members with access to path.
52 Members can also be '*' (all),
53 or some group specified as 'owner:group'."""
57 feature = self.xfeature_create(path)
60 self.feature_setmany(feature, access, members)
62 def access_set(self, path, permissions):
63 """Set permissions for path. The permissions dict
64 maps 'read', 'write' keys to member lists."""
66 self.xfeature_destroy(path)
67 self.access_grant(path, READ, permissions.get('read', []))
68 self.access_grant(path, WRITE, permissions.get('write', []))
70 def access_clear(self, path):
71 """Revoke access to path (both permissions and public)."""
73 self.xfeature_destroy(path)
74 self.public_unset(path)
76 def access_check(self, path, access, member):
77 """Return true if the member has this access to the path."""
79 if access == READ and self.public_get(path) is not None:
82 r = self.xfeature_inherit(path)
86 members = self.feature_get(feature, access)
87 if member in members or '*' in members:
89 for owner, group in self.group_parents(member):
90 if owner + ':' + group in members:
94 def access_inherit(self, path):
95 """Return the inherited or assigned (path, permissions) pair for path."""
97 r = self.xfeature_inherit(path)
101 permissions = self.feature_dict(feature)
102 if READ in permissions:
103 permissions['read'] = permissions[READ]
104 del(permissions[READ])
105 if WRITE in permissions:
106 permissions['write'] = permissions[WRITE]
107 del(permissions[WRITE])
108 return (fpath, permissions)
110 def access_list(self, path):
111 """List all permission paths inherited by or inheriting from path."""
113 return [x[0] for x in self.xfeature_list(path) if x[0] != path]
115 def access_list_paths(self, member, prefix=None):
116 """Return the list of paths granted to member."""
118 q = ("select distinct path from xfeatures inner join "
119 " (select distinct feature_id, key from xfeaturevals inner join "
120 " (select owner || ':' || name as value from groups "
121 " where member = ? union select ? union select '*') "
123 "using (feature_id)")
126 q += " where path like ? escape '\\'"
127 p += (self.escape_like(prefix) + '%',)
129 return [r[0] for r in self.fetchall()]
131 def access_list_shared(self, prefix=''):
132 """Return the list of shared paths."""
134 q = "select path from xfeatures where path like ? escape '\\'"
135 self.execute(q, (self.escape_like(prefix) + '%',))
136 return [r[0] for r in self.fetchall()]