1 ! Copyright (C) 2008 Doug Coleman.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: alien alien.c-types alien.strings io.encodings.utf8
4 io.unix.backend kernel math sequences splitting unix strings
5 combinators.short-circuit byte-arrays combinators qualified
6 accessors math.parser fry assocs namespaces continuations
12 TUPLE: group id name passwd members ;
16 GENERIC: group-struct ( obj -- group )
20 : group-members ( group-struct -- seq )
22 [ dup { [ ] [ *void* ] } 1&& ]
24 dup *void* utf8 alien>string
25 [ alien-address "char**" heap-size + <alien> ] dip
28 : (group-struct) ( id -- group-struct id group-struct byte-array length void* )
29 "group" <c-object> tuck 1024
30 [ <byte-array> ] keep f <void*> ;
32 M: integer group-struct ( id -- group )
33 (group-struct) getgrgid_r io-error ;
35 M: string group-struct ( string -- group )
36 (group-struct) getgrnam_r 0 = [ (io-error) ] unless ;
38 : group-struct>group ( group-struct -- group )
41 [ group-gr_name >>name ]
42 [ group-gr_passwd >>passwd ]
44 [ group-members >>members ]
49 : group-name ( id -- string )
53 group-struct group-gr_name
55 [ nip ] [ number>string ] if* ;
57 : group-id ( string -- id )
58 group-struct group-gr_gid ;
62 : >groups ( byte-array n -- groups )
63 [ 4 grouping:group ] dip head-slice [ *uint group-name ] map ;
65 : (user-groups) ( string -- seq )
66 #! first group is -1337, legacy unix code
67 -1337 NGROUPS_MAX [ 4 * <byte-array> ] keep
68 <int> [ getgrouplist io-error ] 2keep
69 [ 4 tail-slice ] [ *int 1- ] bi* >groups ;
73 GENERIC: user-groups ( string/id -- seq )
75 M: string user-groups ( string -- seq )
78 M: integer user-groups ( id -- seq )
79 username (user-groups) ;
81 : all-groups ( -- seq )
82 [ getgrent dup ] [ group-struct>group ] [ drop ] produce ;
84 : with-group-cache ( quot -- )
85 all-groups [ [ id>> ] keep ] H{ } map>assoc
86 group-cache rot with-variable ; inline
88 : real-group-id ( -- id )
91 : real-group-name ( -- string )
92 real-group-id group-name ; inline
94 : effective-group-id ( -- string )
97 : effective-group-name ( -- string )
98 effective-group-id group-name ; inline
100 GENERIC: set-real-group ( obj -- )
102 GENERIC: set-effective-group ( obj -- )
104 : with-real-group ( string/id quot -- )
105 '[ _ set-real-group @ ]
106 real-group-id '[ _ set-real-group ] [ ] cleanup ; inline
108 : with-effective-group ( string/id quot -- )
109 '[ _ set-effective-group @ ]
110 effective-group-id '[ _ set-effective-group ] [ ] cleanup ; inline
114 : (set-real-group) ( id -- )
115 setgid io-error ; inline
117 : (set-effective-group) ( id -- )
118 setegid io-error ; inline
122 M: string set-real-group ( string -- )
123 group-id (set-real-group) ;
125 M: integer set-real-group ( id -- )
128 M: integer set-effective-group ( id -- )
129 (set-effective-group) ;
131 M: string set-effective-group ( string -- )
132 group-id (set-effective-group) ;