| 1 |
# group.awk --- functions for dealing with the group file |
| 2 |
# |
| 3 |
# Arnold Robbins, arnold@skeeve.com, Public Domain |
| 4 |
# May 1993 |
| 5 |
# Revised October 2000 |
| 6 |
|
| 7 |
BEGIN \ |
| 8 |
{ |
| 9 |
# Change to suit your system |
| 10 |
_gr_awklib = "/usr/sbin/awk/" |
| 11 |
} |
| 12 |
|
| 13 |
function _gr_init( oldfs, oldrs, olddol0, grcat, |
| 14 |
using_fw, n, a, i) |
| 15 |
{ |
| 16 |
if (_gr_inited) |
| 17 |
return |
| 18 |
|
| 19 |
oldfs = FS |
| 20 |
oldrs = RS |
| 21 |
olddol0 = $0 |
| 22 |
using_fw = (PROCINFO["FS"] == "FIELDWIDTHS") |
| 23 |
FS = ":" |
| 24 |
RS = "\n" |
| 25 |
|
| 26 |
grcat = _gr_awklib "grcat" |
| 27 |
while ((grcat | getline) > 0) { |
| 28 |
if ($1 in _gr_byname) |
| 29 |
_gr_byname[$1] = _gr_byname[$1] "," $4 |
| 30 |
else |
| 31 |
_gr_byname[$1] = $0 |
| 32 |
if ($3 in _gr_bygid) |
| 33 |
_gr_bygid[$3] = _gr_bygid[$3] "," $4 |
| 34 |
else |
| 35 |
_gr_bygid[$3] = $0 |
| 36 |
|
| 37 |
n = split($4, a, "[ \t]*,[ \t]*") |
| 38 |
for (i = 1; i <= n; i++) |
| 39 |
if (a[i] in _gr_groupsbyuser) |
| 40 |
_gr_groupsbyuser[a[i]] = \ |
| 41 |
_gr_groupsbyuser[a[i]] " " $1 |
| 42 |
else |
| 43 |
_gr_groupsbyuser[a[i]] = $1 |
| 44 |
|
| 45 |
_gr_bycount[++_gr_count] = $0 |
| 46 |
} |
| 47 |
close(grcat) |
| 48 |
_gr_count = 0 |
| 49 |
_gr_inited++ |
| 50 |
FS = oldfs |
| 51 |
if (using_fw) |
| 52 |
FIELDWIDTHS = FIELDWIDTHS |
| 53 |
RS = oldrs |
| 54 |
$0 = olddol0 |
| 55 |
} |
| 56 |
function getgrnam(group) |
| 57 |
{ |
| 58 |
_gr_init() |
| 59 |
if (group in _gr_byname) |
| 60 |
return _gr_byname[group] |
| 61 |
return "" |
| 62 |
} |
| 63 |
function getgrgid(gid) |
| 64 |
{ |
| 65 |
_gr_init() |
| 66 |
if (gid in _gr_bygid) |
| 67 |
return _gr_bygid[gid] |
| 68 |
return "" |
| 69 |
} |
| 70 |
function getgruser(user) |
| 71 |
{ |
| 72 |
_gr_init() |
| 73 |
if (user in _gr_groupsbyuser) |
| 74 |
return _gr_groupsbyuser[user] |
| 75 |
return "" |
| 76 |
} |
| 77 |
function getgrent() |
| 78 |
{ |
| 79 |
_gr_init() |
| 80 |
if (++_gr_count in _gr_bycount) |
| 81 |
return _gr_bycount[_gr_count] |
| 82 |
return "" |
| 83 |
} |
| 84 |
function endgrent() |
| 85 |
{ |
| 86 |
_gr_count = 0 |
| 87 |
} |
