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 ;
11 TUPLE: group id name passwd members ;
15 GENERIC: group-struct ( obj -- group )
19 : group-members ( group-struct -- seq )
21 [ dup { [ ] [ *void* ] } 1&& ]
23 dup *void* utf8 alien>string
24 [ alien-address "char**" heap-size + <alien> ] dip
27 : (group-struct) ( id -- group-struct id group-struct byte-array length void* )
28 "group" <c-object> tuck 1024
29 [ <byte-array> ] keep f <void*> ;
31 M: integer group-struct ( id -- group )
32 (group-struct) getgrgid_r io-error ;
34 M: string group-struct ( string -- group )
35 (group-struct) getgrnam_r 0 = [ (io-error) ] unless ;
37 : group-struct>group ( group-struct -- group )
40 [ group-gr_name >>name ]
41 [ group-gr_passwd >>passwd ]
43 [ group-members >>members ]
48 : group-name ( id -- string )
52 group-struct group-gr_name
54 [ nip ] [ number>string ] if* ;
56 : group-id ( string -- id )
57 group-struct group-gr_gid ;
61 : >groups ( byte-array n -- groups )
62 [ 4 grouping:group ] dip head-slice [ *uint group-name ] map ;
66 : user-groups ( string -- seq )
67 #! first group is -1337, legacy unix code
68 -1337 NGROUPS_MAX [ 4 * <byte-array> ] keep
69 <int> [ getgrouplist io-error ] 2keep
70 [ 4 tail-slice ] [ *int 1- ] bi* >groups ;
72 : all-groups ( -- seq )
73 [ getgrent dup ] [ group-struct>group ] [ drop ] produce ;
75 : with-group-cache ( quot -- )
76 all-groups [ [ id>> ] keep ] H{ } map>assoc
77 group-cache rot with-variable ; inline
79 : real-group-id ( -- id )
82 : real-group-name ( -- string )
83 real-group-id group-name ; inline
85 : effective-group-id ( -- string )
88 : effective-group-name ( -- string )
89 effective-group-id group-name ; inline
91 GENERIC: set-real-group ( obj -- )
93 GENERIC: set-effective-group ( obj -- )
95 : with-real-group ( string/id quot -- )
96 '[ _ set-real-group @ ]
97 real-group-id '[ _ set-real-group ] [ ] cleanup ; inline
99 : with-effective-group ( string/id quot -- )
100 '[ _ set-effective-group @ ]
101 effective-group-id '[ _ set-effective-group ] [ ] cleanup ; inline
105 : (set-real-group) ( id -- )
106 setgid io-error ; inline
108 : (set-effective-group) ( id -- )
109 setegid io-error ; inline
113 M: string set-real-group ( string -- )
114 group-id (set-real-group) ;
116 M: integer set-real-group ( id -- )
119 M: integer set-effective-group ( id -- )
120 (set-effective-group) ;
122 M: string set-effective-group ( string -- )
123 group-id (set-effective-group) ;