[Bug 8188] Mechanism for taking an rsync server down for maintenance

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=8188

--- Comment #1 from Wayne Davison <wayned at samba.org> 2011-05-31 05:15:51 UTC ---
You could just setup something to echo a one-line message on the socket and
disconnect.  If you're using xinetd, tweak the program to be anything that
outputs a message to stdout.  To replace an rsync daemon, you may want to code
up a C program or use a simple perl script, like this (and run it instead of
the daemon):

#!/usr/bin/perl
use strict;
use warnings;
use Socket;

my $PORT = 873;

local *S;
socket(S, PF_INET, SOCK_STREAM , getprotobyname('tcp'))
    or die "couldn't open socket: $!\n";
setsockopt(S, SOL_SOCKET, SO_REUSEADDR, 1);
bind(S, sockaddr_in($PORT, INADDR_ANY));
listen(S, 25) or die "listen failed: $!\n";

while (1) {
    accept(CON, S);
    print CON "The rsync server is down for maintenance.\n";
    close CON;
}

Any connecting rsync will then output this:


rsync: server sent "The rsync server is down for maintenance." rather than
greeting

-- 
Configure bugmail: https://bugzilla.samba.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the QA contact for the bug.