From 03a803975fc4b35e2c3aa97e10ebf647faec30e2 Mon Sep 17 00:00:00 2001
From: lissav <lissav@8638fb3e-16cb-4fca-ae20-7b5d299a9bcd>
Date: Wed, 11 Jun 2008 18:42:59 +0000
Subject: [PATCH] sets up rsh or ssh on AIX

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@1627 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
---
 xCAT/postscripts/aixremoteshell | 121 ++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 xCAT/postscripts/aixremoteshell

diff --git a/xCAT/postscripts/aixremoteshell b/xCAT/postscripts/aixremoteshell
new file mode 100644
index 000000000..6ae2a1531
--- /dev/null
+++ b/xCAT/postscripts/aixremoteshell
@@ -0,0 +1,121 @@
+#!/usr/bin/perl
+# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
+#(C)IBM Corp
+
+#
+
+#-----------------------------------------------------------------------------
+
+=head1   aixremoteshell 
+
+   This sets up the remote shell for rooton the AIX node,such that root can
+   login using with no password. The default is /bin/rsh and
+   /bin/rcp but can be overriden by setting  the rsh and rcp attribute in the
+   site table to another remote shell such as /bin/ssh /bin/scp.
+=cut
+
+#-----------------------------------------------------------------------------
+
+#
+#  If rsh=rsh then
+#     setup .rhosts on the node
+#  else (ssh)
+#     setup the ssh keys on the node
+#  end
+
+# MAIN
+use strict;
+my $rc = 0;
+
+# AIX default
+my $remoteshell = "/bin/rsh";
+my $remotecopy  = "/bin/rcp";
+
+# Override from site table
+$remoteshell = $ENV{'RSH'};
+$remotecopy  = $ENV{'RCP'};
+my $master = $ENV{'MASTER'};
+my $node   = $ENV{'NODE'};
+my $msg;
+my $home;
+my $cmd;
+my $username = "root";
+my @root = split ':', (`/bin/grep ^$username /etc/passwd 2>&1`);
+$home = $root[5];
+
+if (grep /rsh/, $remoteshell)
+{    # setting up rsh
+        # setup .rhosts if not already setup
+    $cmd = "/bin/grep \"^$master root\" $home/.rhosts";
+    `$cmd 2>&1`;
+    my $rc = $? >> 8;
+    if ($rc)
+    {    # if not found, then add entry in .rhosts
+        &runcmd("/bin/echo $master root >> $home/.rhosts");
+        chmod 0600, "$home/.rhosts";
+    }
+
+}
+else
+{        # setting up ssh
+    my $sshdconfig = "/etc/ssh/sshd_config";
+    my $sshconfig  = "/etc/ssh/ssh_config";
+    if (-e $sshdconfig)
+    {    # ssh installed
+        &runcmd("cp $sshdconfig $sshdconfig.ORIG");
+        &runcmd("echo \"KeyRegenerationInterval 0\" >>$sshdconfig");
+        &runcmd("echo \"X11Forwarding yes\" >>$sshdconfig");
+        &runcmd("echo \"MaxStartups 1024\" >>$sshdconfig");
+        &runcmd("echo \"PasswordAuthentication no\" >>$sshdconfig");
+        &runcmd("cp $sshconfig $sshconfig.ORIG");
+        &runcmd("echo \"StrictHostKeyChecking no\" >>$sshconfig");
+    }
+    else
+    {    # ssh not installed
+        my $msg = "Failed to setup ssh on $node, ssh not installed. \n";
+        `logger -t xcat $msg`;
+        exit 1;
+    }
+    if (-e "/xcatpost/_ssh")
+    {    # ssh public key available
+        $rc = &runcmd("mkdir -p $home/.ssh");
+        if ($rc == 0)
+        {
+            &runcmd("cp -fp /xcatpost/_ssh/* $home/.ssh");
+            chmod 0700, "$home/.ssh";
+            chmod 0600, "$home/.ssh/*";
+        }
+    }
+    else
+    {    # ssh keys not available
+        my $msg = "Failed to setup ssh on $node, ssh keys not available. \n";
+        `logger -t xcat $msg`;
+        exit 1;
+    }
+    $rc = &runcmd("scp -p $master:$home/.ssh/id_* $home/.ssh");
+    chmod 0600, "$home/.ssh/*";
+}
+exit $rc;
+
+#
+# run the command
+#
+sub runcmd
+{
+    my ($cmd) = @_;
+    my $rc = 0;
+    $cmd .= ' 2>&1';
+    my $outref = [];
+    @$outref = `$cmd`;
+    if ($?)
+    {
+        $rc = $? >> 8;
+        if ($rc > 0)
+        {
+            my $msg = "$cmd returned rc=$rc @$outref\n";
+            `logger -t xcat $msg`;
+        }
+    }
+    return $rc;
+}
+