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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)
58 self.feature_setmany(feature, access, members)
60 def access_set(self, path, permissions):
61 """Set permissions for path. The permissions dict
62 maps 'read', 'write' keys to member lists."""
64 self.xfeature_destroy(path)
65 self.access_grant(path, READ, permissions.get('read', []))
66 self.access_grant(path, WRITE, permissions.get('write', []))
68 def access_clear(self, path):
69 """Revoke access to path (both permissions and public)."""
71 self.xfeature_destroy(path)
72 self.public_unset(path)
74 def access_check(self, path, access, member):
75 """Return true if the member has this access to the path."""
77 if access == READ and self.public_get(path) is not None:
80 feature = self.xfeature_get(path)
83 members = self.feature_get(feature, access)
84 if member in members or '*' in members:
86 for owner, group in self.group_parents(member):
87 if owner + ':' + group in members:
91 def access_inherit(self, path):
92 """Return the paths influencing the access for path."""
94 r = self.xfeature_inherit(path)
98 def get_permissions(feature):
99 permissions = self.feature_dict(feature)
100 if READ in permissions:
101 permissions['read'] = permissions[READ]
102 del(permissions[READ])
103 if WRITE in permissions:
104 permissions['write'] = permissions[WRITE]
105 del(permissions[WRITE])
108 # Only keep path components.
109 parts = path.rstrip('/').split('/')
111 for i in range(1, len(parts)):
112 subp = '/'.join(parts[:i + 1])
114 valid.append(subp + '/')
115 return [(x[0], get_permissions(x[1])) for x in r if x[0] in valid]
117 def access_list_paths(self, member, prefix=None):
118 """Return the list of paths granted to member."""
120 q = ("select distinct path from xfeatures inner join "
121 " (select distinct feature_id, key from xfeaturevals inner join "
122 " (select owner || ':' || name as value from groups "
123 " where member = ? union select ? union select '*') "
125 "using (feature_id)")
128 q += " where path like ? escape '\\'"
129 p += (self.escape_like(prefix) + '%',)
131 return [r[0] for r in self.fetchall()]
133 def access_list_shared(self, prefix=''):
134 """Return the list of shared paths."""
136 q = "select path from xfeatures where path like ? escape '\\'"
137 self.execute(q, (self.escape_like(prefix) + '%',))
138 return [r[0] for r in self.fetchall()]