1 ! Copyright (C) 2008 Doug Coleman.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors alien.c-types alien.data assocs byte-arrays
4 classes.struct combinators continuations grouping
5 io.encodings.utf8 kernel math math.parser namespaces sequences
6 strings unix unix.ffi unix.users unix.utilities ;
9 TUPLE: group id name passwd members ;
13 GENERIC: group-struct ( obj -- group/f )
17 : group-members ( group-struct -- seq )
18 gr_mem>> utf8 alien>strings ;
20 : (group-struct) ( id -- group-struct id group-struct byte-array length void* )
21 [ unix.ffi:group new ] dip over 4096
22 [ <byte-array> ] keep f void* <ref> ;
24 : check-group-struct ( group-struct ptr -- group-struct/f )
25 void* deref [ drop f ] unless ;
27 M: integer group-struct
29 [ [ unix.ffi:getgrgid_r ] unix-system-call drop ] keep
32 M: string group-struct
34 [ [ unix.ffi:getgrnam_r ] unix-system-call drop ] keep
37 : group-struct>group ( group-struct -- group )
41 [ gr_passwd>> >>passwd ]
43 [ group-members >>members ]
48 : group-name ( id -- string )
50 ?at [ name>> ] [ number>string ] if
52 group-struct [ gr_name>> ] [ f ] if*
54 [ ] [ number>string ] ?if ;
56 : group-id ( string -- id/f )
57 group-struct dup [ gr_gid>> ] when ;
59 ERROR: no-group string ;
61 : ?group-id ( string -- id )
62 dup group-struct [ nip gr_gid>> ] [ no-group ] if* ;
66 : >groups ( byte-array n -- groups )
67 [ 4 grouping:group ] dip head-slice [ uint deref group-name ] map ;
69 : (user-groups) ( string -- seq )
71 gid>> 64 [ 4 * <byte-array> ] keep
72 int <ref> [ [ unix.ffi:getgrouplist ] unix-system-call drop ] 2keep
80 GENERIC: user-groups ( string/id -- seq )
85 M: integer user-groups
86 user-name (user-groups) ;
88 : all-groups ( -- seq )
89 [ unix.ffi:getgrent dup ] [ group-struct>group ] produce nip
92 : all-group-names ( -- seq )
93 all-groups [ name>> ] map ;
95 : <group-cache> ( -- assoc )
96 all-groups [ [ id>> ] keep ] H{ } map>assoc ;
98 : with-group-cache ( quot -- )
99 [ <group-cache> group-cache ] dip with-variable ; inline
101 : real-group-id ( -- id ) unix.ffi:getgid ; inline
103 : real-group-name ( -- string ) real-group-id group-name ; inline
105 : effective-group-id ( -- string ) unix.ffi:getegid ; inline
107 : effective-group-name ( -- string )
108 effective-group-id group-name ; inline
110 : group-exists? ( name/id -- ? ) group-id >boolean ;
112 GENERIC: set-real-group ( obj -- )
114 GENERIC: set-effective-group ( obj -- )
116 : (with-real-group) ( string/id quot -- )
117 '[ _ set-real-group @ ]
118 real-group-id '[ _ set-real-group ] finally ; inline
120 : with-real-group ( string/id/f quot -- )
121 over [ (with-real-group) ] [ nip call ] if ; inline
123 : (with-effective-group) ( string/id quot -- )
124 '[ _ set-effective-group @ ]
125 effective-group-id '[ _ set-effective-group ] finally ; inline
127 : with-effective-group ( string/id/f quot -- )
128 over [ (with-effective-group) ] [ nip call ] if ; inline
132 : (set-real-group) ( id -- )
133 [ unix.ffi:setgid ] unix-system-call drop ; inline
135 : (set-effective-group) ( id -- )
136 [ unix.ffi:setegid ] unix-system-call drop ; inline
140 M: integer set-real-group
143 M: string set-real-group
144 ?group-id (set-real-group) ;
146 M: integer set-effective-group
147 (set-effective-group) ;
149 M: string set-effective-group
150 ?group-id (set-effective-group) ;