linktest.php3 8 KB
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<?php
#
# EMULAB-COPYRIGHT
# Copyright (c) 2000-2004 University of Utah and the Flux Group.
# All rights reserved.
#
include("defs.php3");
include("showstuff.php3");

#
# No PAGEHEADER since we spit out a Location header later. See below.
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#

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#
# Only known and logged in users can do this.
#
$uid = GETLOGIN();
LOGGEDINORDIE($uid);

#
# Check to make sure a valid experiment.
#
if (isset($pid) && strcmp($pid, "") &&
    isset($eid) && strcmp($eid, "")) {
    if (! TBvalid_eid($eid)) {
	PAGEARGERROR("$eid is contains invalid characters!");
    }
    if (! TBvalid_pid($pid)) {
	PAGEARGERROR("$pid is contains invalid characters!");
    }
    if (! TBValidExperiment($pid, $eid)) {
	USERERROR("$pid/$eid is not a valid experiment!", 1);
    }
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    if (TBExptState($pid, $eid) != $TB_EXPTSTATE_ACTIVE) {
	USERERROR("$pid/$eid is not currently swapped in!", 1);
    }
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    if (! TBExptAccessCheck($uid, $pid, $eid, $TB_EXPT_MODIFY)) {
	USERERROR("You do not have permission to run linktest on $pid/$eid!",
		  1);
    }
}
else {
    PAGEARGERROR("Must specify pid and eid!");
}

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# Need the GID, plus current level and the pid.
$query_result =
    DBQueryFatal("select gid,linktest_level,linktest_pid from experiments ".
		 "where pid='$pid' and eid='$eid'");
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$row = mysql_fetch_array($query_result);
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$gid            = $row[0];
$linktest_level = $row[1];
$linktest_pid   = $row[2];

# For backend script calls below!
TBGroupUnixInfo($pid, $gid, $unix_gid, $unix_name);

#
# If we already have a linktest pid, then do not want to start another
# one. This is going to happen if someone loads this page directly; if
# we come in from the frameset below, then $frame will be set and we do
# not want put up this menu.
# 
if ($linktest_pid && !isset($frame)) {
    if (isset($killit) && $killit == "Stop Linktest") {
	#
	# Form submitted. Kill running linktest and zap back to the initial 
	# page to redisplay the menu. 
	# 
	SUEXEC($uid, $unix_gid, "weblinktest -k $pid $eid",
	       SUEXEC_ACTION_DIE);
	header("Location: linktest.php3?pid=$pid&eid=$eid");
	return;
    }
    PAGEHEADER("Kill running Linktest");

    echo "<font size=+2>Experiment <b>".
	"<a href='showproject.php3?pid=$pid'>$pid</a>/".
	"<a href='showexp.php3?pid=$pid&eid=$eid'>$eid</a></b></font>\n";

    echo "<center><font size=+2><br>
              A Linktest is already running; click to stop it!
              </font><br><br>\n";

    echo "<form action=linktest.php3 method=post>";
    echo "<input type=hidden name=pid value=$pid>\n";
    echo "<input type=hidden name=eid value=$eid>\n";
    echo "<b><input type=submit name=killit value='Stop Linktest'></b>\n";
    echo "</form>\n";
    echo "</center>\n";

    PAGEFOOTER();
    return;
}
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#
# See if a level came in. If not, then get the default from the DB.
#
if (!isset($level) || $level == "") {
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    $level = $linktest_level;
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}
elseif (! TBvalid_tinyint($level) ||
	$level < 0 || $level > TBDB_LINKTEST_MAX) {
    PAGEARGERROR("Linktest level must be an integer 0 <= level <= ".
		 TBDB_LINKTEST_MAX);
}

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#
# If user hits stop button in the output side, stop linktest.
#
$fp = 0;

function SPEWCLEANUP()
{
    global $fp;

    if (connection_aborted() && $fp) {
	SUEXEC($uid, $unix_gid, "weblinktest -k $pid $eid",
	       SUEXEC_ACTION_IGNORE);
	pclose($fp);
	exit();
    }
}

#
# Respond to the frame requests that are set up below. 
#
if (isset($frame)) {
    if ($frame == "stopbutton") {
	if (isset($submit) && $submit == "Stop") {
	    SUEXEC($uid, $unix_gid, "weblinktest -k $pid $eid",
		   SUEXEC_ACTION_IGNORE);
	    
	    echo "<html>
                  <center>
                   <font size=+1><b>Linktest is shutting down</b></font>
                  </center>
                  </html>\n";

	    return;
	}

	#
	# Throw up a simple form to stop the linktest run.
	#
	echo "<html>
              <center>
              <font size=+1><b>Click to stop linktest run</b></font>
              <br>
              <form action=linktest.php3 method=post target=stopbutton>\n";
	echo "   <input type=hidden name=pid value=$pid>\n";
	echo "   <input type=hidden name=eid value=$eid>\n";
	echo "   <input type=hidden name=frame value=stopbutton>\n";
	echo "<b><input type=submit name=submit value='Stop'></b>\n";
	echo "</form>
              </center>
              </html>\n";
	return;
    }
    # Else must be the content side.
    register_shutdown_function("SPEWCLEANUP");
    ignore_user_abort(1);
    set_time_limit(0);
    
    $fp = popen("$TBSUEXEC_PATH ".
		"$uid $unix_gid weblinktest -l $level $pid $eid",
		"r");
    if (! $fp) {
	USERERROR("Linktest failed!", 1);
    }

    header("Content-Type: text/plain");
    header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
    header("Cache-Control: no-cache, must-revalidate");
    header("Pragma: no-cache");
    flush();

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    for ($i = 0; $i < 1025; $i++) {
	echo " ";
    }
    echo "\n";

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    # See if we can get the browser to say something. 
    echo date("D M d G:i:s T");
    echo "\n";
    echo "Starting linktest run at level $level\n";
    flush();
    while (!feof($fp)) {
	$string = fgets($fp, 1024);
	echo "$string";
	flush();
    }
    $retval = pclose($fp);
    $fp = 0;
    if ($retval == 0)
	echo "Linktest run was successful!\n";
    echo date("D M d G:i:s T");
    echo "\n";
    return;
}

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#
# We run this twice. The first time we are checking for a confirmation
# by putting up a form. The next time through the confirmation will be
# set. Or, the user can hit the cancel button, in which case we should
# probably redirect the browser back up a level.
#
if ($canceled) {
    PAGEHEADER("Run Linktest");
	
    echo "<center><h3><br>
          Operation canceled!
          </h3></center>\n";
    
    PAGEFOOTER();
    return;
}

if (!$confirmed) {
    PAGEHEADER("Run Linktest at level $level");

    echo "<font size=+2>Experiment <b>".
	"<a href='showproject.php3?pid=$pid'>$pid</a>/".
	"<a href='showexp.php3?pid=$pid&eid=$eid'>$eid</a></b></font>\n";

    echo "<center><font size=+2><br>
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              Are you <b>sure</b> you want to run linktest?
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              </font><br><br>\n";
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    SHOWEXP($pid, $eid, 1);

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    echo "<br>\n";
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    echo "<form action=linktest.php3 method=post
                target=Linktest_${pid}_${eid}>";
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    echo "<input type=hidden name=pid value=$pid>\n";
    echo "<input type=hidden name=eid value=$eid>\n";

    echo "<table align=center border=1>\n";
    echo "<tr>
              <td><a href='$TBDOCBASE/doc/docwrapper.php3?".
	                  "docname=linktest.html'>Linktest</a> Option:</td>
              <td><select name=level>
                          <option value=0>Skip Linktest </option>\n";

    for ($i = 1; $i <= TBDB_LINKTEST_MAX; $i++) {
	$selected = "";

	if (strcmp("$level", "$i") == 0)
	    $selected = "selected";
	
	echo "        <option $selected value=$i>Level $i - " .
	    $linktest_levels[$i] . "</option>\n";
    }
    echo "       </select>";
    echo "    </td>
          </tr>
          </table><br>\n";

    echo "<b><input type=submit name=confirmed value=Confirm></b>\n";
    echo "<b><input type=submit name=canceled value=Cancel></b>\n";
    echo "</form>\n";
    echo "</center>\n";

    PAGEFOOTER();
    return;
}

#
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# Throw up a simple frameset.
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#
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echo "<html>
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      <title>Linktest for $pid/$eid</title>
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      <script language=JavaScript>
          <!--
          function LinktestDone() {
              var html = '<html><center>' +
                         '<font size=+1><b>Linktest has finished</b></font>' +
                         '</center></html>';
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	      parent.stopbutton.document.close();
	      parent.stopbutton.document.open();
	      parent.stopbutton.document.write(html);
          }
          //-->
      </script>\n";
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echo " <frameset cols=\"10%,*\" border=5 onLoad=\"LinktestDone()\"> 
        <frame src=\"linktest.php3?pid=$pid&eid=$eid&frame=stopbutton\"
               name=stopbutton> 
        <frame src=\"linktest.php3?".
                   "pid=$pid&eid=$eid&level=$level&frame=output\"
               name=output> 
        <noframes>You must use a browser that can display frames 
                  to see this page.
        </noframes>
      </frameset>\n";
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?>