getpwent bug?
Jens Rehsack
rehsack at googlemail.com
Fri Jul 16 19:20:55 UTC 2010
On 07/16/10 18:13, Dan Nelson wrote:
> In the last episode (Jul 16), Jens Rehsack said:
>> On 07/16/10 15:07, Dan Nelson wrote:
>>> In the last episode (Jul 16), Jens Rehsack said:
>>>> Could you please take a look to my other mail (getgrent related) - there
>>>> seems another bug ...
>>>
>>> Do you have another one-liner that will reproduce it? A simple
>>> "/usr/bin/getent group" doesn't return dupes for me. Oddly enough, the
>>> *grent code doesn't use an internal counter, so the bug you found in
>>> endpwent doesn't exist in endgrent (afaik; the nsswitch code isn't that
>>> easy to read).
>>
>> Not really a one-liner:
>> perl -MData::Dumper -e 'setgrent; my %dupchk; while( my ( $name, $grpass,
>> $gid, $members ) = getgrent() ) { print "$name is returned more than once
>> (No $dupchk{$name} comes here)\n" if( $dupchk{$name}++ ); print Dumper( [
>> $name, $grpass, $gid, $members ] ) };'
>>
>> setgrent() doesn't work here.
>
> I ran that and got dupes for group entries that exist both in /etc/groups and
> my LDAP source, but that's expected.
The dups I got are not duplicate:
$ less /var/yp/group
# $FreeBSD: src/etc/group,v 1.19.2.3 2002/06/30 17:57:17 des Exp $
#
wheel:*:0:root,trevor
staff:*:20:root
win32::1001:melanie,sarah
os2::1002:
dos::1003:
unix::1004:
music::1005:melanie,sarah
gamers::1006:
devel::1007:trevor
wwwdevel::15000:wwwglobal,trevor
All the rest (see attachment) are from /etc/group.
Jens
-------------- next part --------------
$VAR1 = [
'wheel',
'*',
0,
'root trevor mel'
];
$VAR1 = [
'daemon',
'*',
1,
''
];
$VAR1 = [
'kmem',
'*',
2,
''
];
$VAR1 = [
'sys',
'*',
3,
''
];
$VAR1 = [
'tty',
'*',
4,
''
];
$VAR1 = [
'operator',
'*',
5,
'root'
];
$VAR1 = [
'mail',
'*',
6,
''
];
$VAR1 = [
'bin',
'*',
7,
''
];
$VAR1 = [
'news',
'*',
8,
''
];
$VAR1 = [
'man',
'*',
9,
''
];
$VAR1 = [
'games',
'*',
13,
''
];
$VAR1 = [
'ftp',
'*',
14,
''
];
$VAR1 = [
'staff',
'*',
20,
''
];
$VAR1 = [
'sshd',
'*',
22,
''
];
$VAR1 = [
'smmsp',
'*',
25,
''
];
$VAR1 = [
'mailnull',
'*',
26,
''
];
$VAR1 = [
'guest',
'*',
31,
''
];
$VAR1 = [
'bind',
'*',
53,
''
];
$VAR1 = [
'proxy',
'*',
62,
''
];
$VAR1 = [
'authpf',
'*',
63,
''
];
$VAR1 = [
'_pflogd',
'*',
64,
''
];
$VAR1 = [
'_dhcp',
'*',
65,
''
];
$VAR1 = [
'uucp',
'*',
66,
''
];
$VAR1 = [
'dialer',
'*',
68,
''
];
$VAR1 = [
'network',
'*',
69,
''
];
$VAR1 = [
'audit',
'*',
77,
''
];
$VAR1 = [
'www',
'*',
80,
''
];
$VAR1 = [
'oper',
'*',
200,
'root trevor pgsql'
];
$VAR1 = [
'nogroup',
'*',
65533,
''
];
$VAR1 = [
'nobody',
'*',
65534,
''
];
$VAR1 = [
'messagebus',
'*',
556,
''
];
$VAR1 = [
'polkit',
'*',
559,
''
];
$VAR1 = [
'haldaemon',
'*',
560,
''
];
$VAR1 = [
'avahi',
'*',
558,
''
];
$VAR1 = [
'gdm',
'*',
92,
''
];
$VAR1 = [
'pgsql',
'*',
70,
''
];
smmsp is returned more than once (No 2 comes here)
$VAR1 = [
'smmsp',
'*',
25,
''
];
guest is returned more than once (No 2 comes here)
$VAR1 = [
'guest',
'*',
31,
''
];
authpf is returned more than once (No 2 comes here)
$VAR1 = [
'authpf',
'*',
63,
''
];
$VAR1 = [
'devel',
'',
1007,
'trevor'
];
tty is returned more than once (No 2 comes here)
$VAR1 = [
'tty',
'*',
4,
''
];
bin is returned more than once (No 2 comes here)
$VAR1 = [
'bin',
'*',
7,
''
];
dialer is returned more than once (No 2 comes here)
$VAR1 = [
'dialer',
'*',
68,
''
];
$VAR1 = [
'music',
'',
1005,
'trevor melanie sarah'
];
$VAR1 = [
'ldap',
'*',
389,
''
];
kmem is returned more than once (No 2 comes here)
$VAR1 = [
'kmem',
'*',
2,
''
];
ftp is returned more than once (No 2 comes here)
$VAR1 = [
'ftp',
'*',
14,
''
];
sshd is returned more than once (No 2 comes here)
$VAR1 = [
'sshd',
'*',
22,
''
];
proxy is returned more than once (No 2 comes here)
$VAR1 = [
'proxy',
'*',
62,
''
];
network is returned more than once (No 2 comes here)
$VAR1 = [
'network',
'*',
69,
''
];
nogroup is returned more than once (No 2 comes here)
$VAR1 = [
'nogroup',
'*',
65533,
''
];
$VAR1 = [
'palm',
'',
1000,
'trevor'
];
$VAR1 = [
'mrtg',
'*',
279,
''
];
mail is returned more than once (No 2 comes here)
$VAR1 = [
'mail',
'*',
6,
''
];
_pflogd is returned more than once (No 2 comes here)
$VAR1 = [
'_pflogd',
'*',
64,
''
];
nobody is returned more than once (No 2 comes here)
$VAR1 = [
'nobody',
'*',
65534,
''
];
$VAR1 = [
'dhcpd',
'*',
900,
''
];
$VAR1 = [
'win32',
'',
1001,
'melanie sarah'
];
daemon is returned more than once (No 2 comes here)
$VAR1 = [
'daemon',
'*',
1,
''
];
operator is returned more than once (No 2 comes here)
$VAR1 = [
'operator',
'*',
5,
'root'
];
man is returned more than once (No 2 comes here)
$VAR1 = [
'man',
'*',
9,
''
];
staff is returned more than once (No 2 comes here)
$VAR1 = [
'staff',
'*',
20,
'root'
];
$VAR1 = [
'os2',
'',
1002,
''
];
$VAR1 = [
'unix',
'',
1004,
''
];
wheel is returned more than once (No 2 comes here)
$VAR1 = [
'wheel',
'*',
0,
'root trevor mel'
];
news is returned more than once (No 2 comes here)
$VAR1 = [
'news',
'*',
8,
''
];
games is returned more than once (No 2 comes here)
$VAR1 = [
'games',
'*',
13,
''
];
bind is returned more than once (No 2 comes here)
$VAR1 = [
'bind',
'*',
53,
''
];
uucp is returned more than once (No 2 comes here)
$VAR1 = [
'uucp',
'*',
66,
''
];
www is returned more than once (No 2 comes here)
$VAR1 = [
'www',
'*',
80,
''
];
$VAR1 = [
'wwwdevel',
'',
15000,
'wwwglobal trevor'
];
mailnull is returned more than once (No 2 comes here)
$VAR1 = [
'mailnull',
'*',
26,
''
];
_dhcp is returned more than once (No 2 comes here)
$VAR1 = [
'_dhcp',
'*',
65,
''
];
$VAR1 = [
'squid',
'*',
100,
''
];
$VAR1 = [
'dos',
'',
1003,
''
];
$VAR1 = [
'cyrus',
'*',
60,
''
];
sys is returned more than once (No 2 comes here)
$VAR1 = [
'sys',
'*',
3,
''
];
audit is returned more than once (No 2 comes here)
$VAR1 = [
'audit',
'*',
77,
''
];
$VAR1 = [
'pulse-rt',
'*',
557,
''
];
$VAR1 = [
'pulse',
'*',
563,
''
];
$VAR1 = [
'pulse-access',
'*',
564,
''
];
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