/usr/share/doc/ejabberd/examples/extauth/check_pass_null.pl is in ejabberd 2.1.11-1ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | #!/usr/bin/perl
use Unix::Syslog qw(:macros :subs);
my $domain = $ARGV[0] || "example.com";
while(1)
{
# my $rin = '',$rout;
# vec($rin,fileno(STDIN),1) = 1;
# $ein = $rin;
# my $nfound = select($rout=$rin,undef,undef,undef);
my $buf = "";
syslog LOG_INFO,"waiting for packet";
my $nread = sysread STDIN,$buf,2;
do { syslog LOG_INFO,"port closed"; exit; } unless $nread == 2;
my $len = unpack "n",$buf;
my $nread = sysread STDIN,$buf,$len;
my ($op,$user,$host,$password) = split /:/,$buf;
#$user =~ s/\./\//og;
my $jid = "$user\@$domain";
my $result;
syslog(LOG_INFO,"request (%s)", $op);
SWITCH:
{
$op eq 'auth' and do
{
$result = 1;
},last SWITCH;
$op eq 'setpass' and do
{
$result = 1;
},last SWITCH;
$op eq 'isuser' and do
{
# password is null. Return 1 if the user $user\@$domain exitst.
$result = 1;
},last SWITCH;
$op eq 'tryregister' and do
{
$result = 1;
},last SWITCH;
$op eq 'removeuser' and do
{
# password is null. Return 1 if the user $user\@$domain exitst.
$result = 1;
},last SWITCH;
$op eq 'removeuser3' and do
{
$result = 1;
},last SWITCH;
};
my $out = pack "nn",2,$result ? 1 : 0;
syswrite STDOUT,$out;
}
closelog;
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