cdromcheckin.php3 8.4 KB
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<?php
#
# EMULAB-COPYRIGHT
# Copyright (c) 2000-2002 University of Utah and the Flux Group.
# All rights reserved.
#
require("defs.php3");

# These error codes must match whats in register.pl on the cd.
define("CDROMSTATUS_OKAY"	,	0);
define("CDROMSTATUS_MISSINGARGS",	100);
define("CDROMSTATUS_INVALIDARGS",	101);
define("CDROMSTATUS_BADCDKEY",		102);
define("CDROMSTATUS_BADPRIVKEY",	103);
define("CDROMSTATUS_BADIPADDR",		104);
define("CDROMSTATUS_BADREMOTEIP",	105);
define("CDROMSTATUS_IPADDRINUSE",	106);
define("CDROMSTATUS_OTHER",		199);

#
# Spit back a text message we can display to the user on the console
# of the node running the checkin. We could return an http error, but
# that would be of no help to the user on the other side.
# 
function SPITSTATUS($status)
{
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    global $REMOTE_ADDR, $REQUEST_URI;
    
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    header("Content-Type: text/plain");
    echo "emulab_status=$status\n";
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    if ($status) {
	    TBERROR("CDROM Checkin Error ($status) from $REMOTE_ADDR:\n\n".
		    "$REQUEST_URI\n", 0);
    }
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}

#
# This page is not intended to be invoked by humans!
#
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if ((!isset($cdkey) || !strcmp($cdkey, ""))) {
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    SPITSTATUS(CDROMSTATUS_MISSINGARGS);
    return;
}

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if (!ereg("[0-9a-zA-Z]+", $cdkey)) {
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    SPITSTATUS(CDROMSTATUS_INVALIDARGS);
    return;
}

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#
# Make sure this is a valid CDkey.
#
$query_result =
    DBQueryFatal("select * from cdroms where cdkey='$cdkey'");
if (! mysql_num_rows($query_result)) {
    SPITSTATUS(CDROMSTATUS_BADCDKEY);
    return;
}
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$row    = mysql_fetch_array($query_result);
$cdvers = $row[version];
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#
# Node is requesting latest instructions. Give it the script. This could
# be on a per CDROM basis, but for now all versions get the same thing.
# I know, the hardwired paths are bad; move into the cdroms DB table, even
# if duplicated. 
# 
if (isset($needscript)) {
    header("Content-Type: text/plain");
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    echo "MD5=5ed48bdf6def666d5a5d643cbc2ce4d0\n";
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    echo "URL=https://${WWWHOST}/images/netbed-setup.pl\n";
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    echo "emulab_status=0\n";
    return;
}

#
# Otherwise, move onto config instructions.
#
if ((!isset($privkey) || !strcmp($privkey, "")) ||
    (!isset($IP) || !strcmp($IP, ""))) {
    SPITSTATUS(CDROMSTATUS_MISSINGARGS);
    return;
}

if (!ereg("[0-9a-zA-Z ]+", $privkey) ||
    !ereg("[0-9\.]+", $IP)) {
    SPITSTATUS(CDROMSTATUS_INVALIDARGS);
    return;
}

if (isset($wahostname) &&
    !ereg("[-_0-9a-zA-Z\.]+", $wahostname)) {
    SPITSTATUS(CDROMSTATUS_INVALIDARGS);
    return;
}

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#
# Generate a nickname if given hostname.
#
unset($nickname);
if (isset($wahostname)) {
    if (strpos($wahostname, ".")) {
	$nickname = str_replace(".", "-", $wahostname);
    }
    else {
	$nickname = $wahostname;
    }
}

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if (isset($roottag) &&
    !ereg("[0-9a-zA-Z]+", $roottag)) {
    SPITSTATUS(CDROMSTATUS_INVALIDARGS);
    return;
}

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#
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# Grab the privkey record. First squeeze out any spaces.
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#
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$privkey = str_replace(" ", "", $privkey);

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$query_result =
    DBQueryFatal("select * from widearea_privkeys where privkey='$privkey'");

if (!mysql_num_rows($query_result)) {
    SPITSTATUS(CDROMSTATUS_BADPRIVKEY);
    return;
}
$warow  = mysql_fetch_array($query_result);
$privIP = $warow[IP];

#
# If the node is reporting that its finished updating, then make its
# current privkey its nextprivkey.
# 
if (isset($updated) && $updated == 1) {
    if (! strcmp($privIP, "1.1.1.1")) {
        #
        # If the node is brand new, then need to create several records.
	# Pass it off to a perl script.
        #
	DBQueryFatal("update widearea_privkeys ".
		     "set IP='$IP' ".
		     "where privkey='$privkey'");
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	$newargs = "-w -i $IP ";
	if (isset($nickname)) {
	    $newargs .= " -n $nickname ";
	}
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	$type = "pcwa";
	if (isset($wahostname)) {
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            #
            # XXX Parse hostname to see if a ron node.
	    # Silly, but effective since we will never have anything else
	    # besides wa/ron.
            #
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	    if (strstr($wahostname, ".ron.") ||
		strstr($wahostname, "roncluster")) {
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		$type = "pcron";
	    }
	}
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	$newargs .= " -t $type ";
	SUEXEC("nobody", $TBADMINGROUP, "webnewwanode $newargs", 0);
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    }
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    $newroot = "";
    if (isset($roottag)) {
	    $newroot = ",rootkey='$roottag'";
    }

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    DBQueryFatal("update widearea_privkeys ".
		 "set privkey=nextprivkey,updated=now(),nextprivkey=NULL ".
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		 "    $newroot ".
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		 "where privkey='$privkey'");

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    #
    # Update with new nickname. Nice if node changes its real hostname.
    #
    if (isset($nickname)) {
	$nodeid = TBIPtoNodeID($IP);
	if ($nodeid) {
	    DBQueryFatal("update reserved set vname='$nickname' ".
			 "where node_id='$nodeid'");
	}
    }

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    SPITSTATUS(CDROMSTATUS_OKAY);
    return;
}

#
# If the record has a valid IP address and matches the node connecting
# then all we do is return a new private key.
#
if (strcmp($privIP, "1.1.1.1")) {
    if (strcmp($privIP, $IP)) {
	SPITSTATUS(CDROMSTATUS_BADIPADDR);
	return;
    }
    if (strcmp($REMOTE_ADDR, $IP)) {
	SPITSTATUS(CDROMSTATUS_BADREMOTEIP);
	return;
    }
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    $newroot = "";
    if (isset($roottag)) {
	    $newroot = ",rootkey='$roottag'";
    }
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    #
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    # For now we just give them a new privkey. There is no real image upgrade
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    # path in place yet.
    #
    $newkey = GENHASH();
    DBQueryFatal("update widearea_privkeys ".
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		 "set nextprivkey='$newkey',updated=now(),cdkey='$cdkey' ".
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		 "    $newroot ".
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		 "where IP='$IP' and privkey='$privkey'");

    header("Content-Type: text/plain");
    echo "privkey=$newkey\n";
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    if (0) {
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    if ($cdvers == 3) {
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#	    echo "slice1_image=slice1.ndz\n";
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	    echo "slice1_image=http://${WWWHOST}/images/slice1-v3.ndz\n";
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	    echo "slice1_md5=a9af4a08310a314c5b38e5e33a2b9c3e\n";
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	    echo "slicex_slice=3\n";
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	    echo "slicex_mount=/users\n";
    }
    }
    echo "emulab_status=0\n";
    
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    return;
}

#
# We need to check for duplicate IPs. 
#
$query_result =
    DBQueryFatal("select * from widearea_privkeys where IP='$IP'");

if (mysql_num_rows($query_result)) {
    SPITSTATUS(CDROMSTATUS_IPADDRINUSE);
    return;
}

#
# Generate a new privkey and return the info. The DB is updated with the
# next key, but it does not become effective until it responds that it
# finished okay. This leaves a window open, but the eventual plan it to
# get rid of these priv keys anyway and go to per-node cert files we update
# on the fly.
# 
$newkey = GENHASH();
DBQueryFatal("update widearea_privkeys ".
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	     "set nextprivkey='$newkey',updated=now(),cdkey='$cdkey'".
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	     "where privkey='$privkey'");

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header("Content-Type: text/plain");
echo "privkey=$newkey\n";
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if ($cdvers == 1) {
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    if (0) {
	# one shot setup for ISI (or anyone else who has a corrupt image)
	echo "fdisk=http://${WWWHOST}/images/image.fdisk\n";
	echo "slice1_image=http://${WWWHOST}/images/slice1-v1.ndz\n";
	echo "slice1_md5=2970e2cf045f5872c6728eeea3b51dae\n";
	echo "slicex_mount=/users\n";
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	echo "slicex_tarball=http://${WWWHOST}/images/slicex-v2.tar.gz\n";
	echo "slicex_md5=a5274072a40ebf2fda8b8596a6e60e0d\n";
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    } else {
	echo "fdisk=image.fdisk\n";
	echo "slice1_image=slice1.ndz\n";
	echo "slice1_md5=cb810b43f49d15b3ac4122ff42f8925d\n";
	echo "slicex_mount=/users\n";
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	echo "slicex_tarball=http://${WWWHOST}/images/slicex.tar.gz\n";
	echo "slicex_md5=a5274072a40ebf2fda8b8596a6e60e0d\n";
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    }
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}
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elseif ($cdvers == 2) {
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    if (0) {
	echo "fdisk=http://${WWWHOST}/images/image.fdisk\n";
	echo "slice1_image=http://${WWWHOST}/images/slice1-v2.ndz\n";
	echo "slice1_md5=402f00f2e46d22507cef3d19846b48f8\n";
	echo "slicex_mount=/users\n";
	echo "slicex_tarball=http://${WWWHOST}/images/slicex-v2.tar.gz\n";
	echo "slicex_md5=a5274072a40ebf2fda8b8596a6e60e0d\n";
    }
    else {
	echo "fdisk=image.fdisk\n";
	echo "slice1_image=slice1.ndz\n";
	echo "slice1_md5=402f00f2e46d22507cef3d19846b48f8\n";
	echo "slicex_mount=/users\n";
	echo "slicex_tarball=slicex.tar.gz\n";
	echo "slicex_md5=a5274072a40ebf2fda8b8596a6e60e0d\n";
    }
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}
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else {
    if (0) {
	echo "fdisk=http://${WWWHOST}/images/image.fdisk\n";
	echo "slice1_image=http://${WWWHOST}/images/slice1-v3.ndz\n";
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	echo "slice1_md5=a9af4a08310a314c5b38e5e33a2b9c3e\n";
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	echo "slicex_slice=3\n";
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	echo "slicex_mount=/users\n";
	echo "slicex_tarball=http://${WWWHOST}/images/slicex-v3.tar.gz\n";
	echo "slicex_md5=0a3398cee6104850adaee7afbe75f008\n";
    }
    else {
	echo "fdisk=image.fdisk\n";
	echo "slice1_image=slice1.ndz\n";
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	echo "slice1_md5=a9af4a08310a314c5b38e5e33a2b9c3e\n";
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	echo "slicex_slice=3\n";
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	echo "slicex_mount=/users\n";
	echo "slicex_tarball=slicex.tar.gz\n";
	echo "slicex_md5=0a3398cee6104850adaee7afbe75f008\n";
    }
}
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echo "emulab_status=0\n";