136 lines
3.5 KiB
Factor
136 lines
3.5 KiB
Factor
! Copyright (C) 2008 Doug Coleman.
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! See http://factorcode.org/license.txt for BSD license.
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USING: alien alien.c-types alien.strings io.encodings.utf8
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io.backend.unix kernel math sequences splitting strings
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combinators.short-circuit byte-arrays combinators
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accessors math.parser fry assocs namespaces continuations
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unix.users unix.utilities classes.struct unix ;
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IN: unix.groups
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QUALIFIED: unix.ffi
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QUALIFIED: grouping
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TUPLE: group id name passwd members ;
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SYMBOL: group-cache
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GENERIC: group-struct ( obj -- group/f )
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<PRIVATE
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: group-members ( group-struct -- seq )
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gr_mem>> utf8 alien>strings ;
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: (group-struct) ( id -- group-struct id group-struct byte-array length void* )
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[ \ unix.ffi:group <struct> ] dip over 4096
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[ <byte-array> ] keep f <void*> ;
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: check-group-struct ( group-struct ptr -- group-struct/f )
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*void* [ drop f ] unless ;
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M: integer group-struct ( id -- group/f )
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(group-struct)
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[ [ unix.ffi:getgrgid_r ] unix-system-call drop ] keep
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check-group-struct ;
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M: string group-struct ( string -- group/f )
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(group-struct)
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[ [ unix.ffi:getgrnam_r ] unix-system-call drop ] keep
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check-group-struct ;
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: group-struct>group ( group-struct -- group )
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[ \ group new ] dip
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{
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[ gr_name>> >>name ]
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[ gr_passwd>> >>passwd ]
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[ gr_gid>> >>id ]
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[ group-members >>members ]
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} cleave ;
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PRIVATE>
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: group-name ( id -- string )
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dup group-cache get [
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?at [ name>> ] [ number>string ] if
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] [
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group-struct [ gr_name>> ] [ f ] if*
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] if*
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[ nip ] [ number>string ] if* ;
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: group-id ( string -- id/f )
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group-struct dup [ gr_gid>> ] when ;
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<PRIVATE
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: >groups ( byte-array n -- groups )
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[ 4 grouping:group ] dip head-slice [ *uint group-name ] map ;
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: (user-groups) ( string -- seq )
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#! first group is -1337, legacy unix code
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-1337 unix.ffi:NGROUPS_MAX [ 4 * <byte-array> ] keep
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<int> [ [ unix.ffi:getgrouplist ] unix-system-call drop ] 2keep
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[ 4 tail-slice ] [ *int 1 - ] bi* >groups ;
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PRIVATE>
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GENERIC: user-groups ( string/id -- seq )
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M: string user-groups ( string -- seq )
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(user-groups) ;
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M: integer user-groups ( id -- seq )
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user-name (user-groups) ;
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: all-groups ( -- seq )
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[ unix.ffi:getgrent dup ] [ group-struct>group ] produce nip ;
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: <group-cache> ( -- assoc )
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all-groups [ [ id>> ] keep ] H{ } map>assoc ;
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: with-group-cache ( quot -- )
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[ <group-cache> group-cache ] dip with-variable ; inline
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: real-group-id ( -- id ) unix.ffi:getgid ; inline
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: real-group-name ( -- string ) real-group-id group-name ; inline
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: effective-group-id ( -- string ) unix.ffi:getegid ; inline
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: effective-group-name ( -- string )
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effective-group-id group-name ; inline
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GENERIC: set-real-group ( obj -- )
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GENERIC: set-effective-group ( obj -- )
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: with-real-group ( string/id quot -- )
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'[ _ set-real-group @ ]
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real-group-id '[ _ set-real-group ] [ ] cleanup ; inline
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: with-effective-group ( string/id quot -- )
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'[ _ set-effective-group @ ]
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effective-group-id '[ _ set-effective-group ] [ ] cleanup ; inline
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<PRIVATE
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: (set-real-group) ( id -- )
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[ unix.ffi:setgid ] unix-system-call drop ; inline
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: (set-effective-group) ( id -- )
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[ unix.ffi:setegid ] unix-system-call drop ; inline
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PRIVATE>
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M: string set-real-group ( string -- )
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group-id (set-real-group) ;
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M: integer set-real-group ( id -- )
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(set-real-group) ;
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M: integer set-effective-group ( id -- )
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(set-effective-group) ;
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M: string set-effective-group ( string -- )
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group-id (set-effective-group) ;
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