quickvm_sup.php 25.1 KB
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<?php
#
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# Copyright (c) 2000-2016 University of Utah and the Flux Group.
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# 
# {{{EMULAB-LICENSE
# 
# This file is part of the Emulab network testbed software.
# 
# This file is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or (at
# your option) any later version.
# 
# This file is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public
# License for more details.
# 
# You should have received a copy of the GNU Affero General Public License
# along with this file.  If not, see <http://www.gnu.org/licenses/>.
# 
# }}}
#
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include_once("portal_defs.php");
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include_once("instance_defs.php");

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#
# Global flag to disable accounts. We do this on some pages which
# should not display login/account info.
#
$disable_accounts = 0;

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#
# Global flag for page embedded. We look directly into page arguments
# for this, rather then using standard argument processing in each page.
# Page embedding is used to contain an apt pages withing Emulab. 
#
$embedded = 0;
if (isset($_REQUEST["embedded"]) && $_REQUEST["embedded"]) {
    $embedded = 1;
}

# Flag to signal that a requires was spit. For errors.
$spatrequired = 0;

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# For backend scripts to know how they were invoked.
if (isset($_SERVER['SERVER_NAME'])) { 
    putenv("SERVER_NAME=" . $_SERVER['SERVER_NAME']);
}
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#
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# Redefine this so APT errors are styled properly. Called by PAGEERROR();.
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#
$PAGEERROR_HANDLER = function($msg, $status_code = 0) {
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    global $drewheader, $ISCLOUD, $ISPNET, $ISEMULAB, $ISAPT, $PORTAL_HELPFORUM;
    global $spatrequired;
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    if (! $drewheader) {
	SPITHEADER();
    }
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    echo $msg;
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    echo "<script type='text/javascript'>\n";
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    echo "    window.ISEMULAB  = " . ($ISEMULAB ? "1" : "0") . ";\n";
    echo "    window.ISCLOUD   = " . ($ISCLOUD  ? "1" : "0") . ";\n";
    echo "    window.ISPNET    = " . ($ISPNET   ? "1" : "0") . ";\n";
    echo "    window.ISAPT     = " . ($ISAPT    ? "1" : "0") . ";\n";
    echo "    window.HELPFORUM = " .
        "'https://groups.google.com/d/forum/${PORTAL_HELPFORUM}';\n";
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    echo "</script>\n";
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    if (!$spatrequired) {
	echo "<script src='js/lib/jquery-2.0.3.min.js'></script>\n";
	echo "<script src='js/lib/bootstrap.js'></script>\n";
	echo "<script src='js/lib/require.js' data-main='js/null.js'>
                 </script>\n";
    }
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    SPITFOOTER();
    die("");
};

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$PAGEHEADER_FUNCTION = function($thinheader = 0, $ignore1 = NULL,
				 $ignore2 = NULL, $ignore3 = NULL)
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{
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    global $PORTAL_MANUAL, $PORTAL_MOTD_SITEVAR, $PORTAL_HELPFORUM;
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    global $TBMAINSITE, $APTTITLE, $FAVICON, $APTLOGO, $APTSTYLE, $ISAPT;
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    global $GOOGLEUA, $ISCLOUD, $ISPNET, $ISEMULAB, $TBBASE, $ISEMULAB;
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    global $login_user, $login_status;
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    global $disable_accounts, $page_title, $drewheader, $embedded;
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    $showmenus = 0;
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    $title = $APTTITLE;
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    if (isset($page_title)) {
	$title .= " - $page_title";
    }
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    $height = ($thinheader ? 150 : 250);
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    $drewheader = 1;
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    #
    # Figure out who is logged in, if anyone.
    #
    if (($login_user = CheckLogin($status)) != null) {
	$login_status = $status;
	$login_uid    = $login_user->uid();
    }
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    if ($login_user && !($login_status & CHECKLOGIN_WEBONLY)) {
        $showmenus = 1;
    }
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    echo "<html>
      <head>
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        <title>$title</title>
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        <link rel='shortcut icon' href='$FAVICON'
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              type='image/vnd.microsoft.icon'>
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        <link rel='stylesheet' href='css/bootstrap.css'>
        <link rel='stylesheet' href='css/quickvm.css'>
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        <link rel='stylesheet' href='css/$APTSTYLE'>";
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    echo "<script src='js/lib/jquery.min.js'></script>\n";
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    echo "<script>APT_CACHE_TOKEN='" . Instance::CacheToken() . "';</script>";
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    echo "<script src='js/common.js?nocache=asdfasdf'></script>
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        <link rel='stylesheet' href='css/jquery-steps.css'>
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        <script src='$TBBASE/emulab_sup.js'></script>
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      </head>
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    <body style='display: none;'>\n";
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    echo "<script type='text/javascript'>\n";
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    echo "    window.ISEMULAB = " . ($ISEMULAB ? "1" : "0") . ";\n";
    echo "    window.ISCLOUD  = " . ($ISCLOUD  ? "1" : "0") . ";\n";
    echo "    window.ISPNET   = " . ($ISPNET   ? "1" : "0") . ";\n";
    echo "    window.ISAPT    = " . ($ISAPT    ? "1" : "0") . ";\n";
    echo "    window.MANUAL   = '$PORTAL_MANUAL';\n";
    echo "    window.HELPFORUM = " .
        "'https://groups.google.com/d/forum/${PORTAL_HELPFORUM}';\n";
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    echo "    window.EMBEDDED = $embedded;\n";
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    echo "</script>\n";
    
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    if ($TBMAINSITE && !$embedded && file_exists("../google-analytics.php")) {
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	readfile("../google-analytics.php");
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	echo "<script type='text/javascript'>
                ga('create', '$GOOGLEUA', 'auto');
                ga('send', 'pageview');
              </script>";
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    }
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    echo "
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    <!-- Container for body, needed for sticky footer -->
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    <div id='wrap'>\n";

    if ($embedded) {
	goto embed;
    }
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    #
    # This is the stuff to the right of the logo.
    # 
    $navbar_status = "";
    $navbar_right  = "";

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    if (!$disable_accounts) {
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        if ($login_user && ISADMINISTRATOR()) {
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	    # Extra top margin to align with the rest of the buttons.
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            $navbar_status .= 
                "<li class='apt-left' style='margin-top:7px'>\n";
            
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	    if (ISADMIN()) {
		$url = CreateURL("toggle", $login_user,
				 "type", "adminon", "value", 0);
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                $navbar_status .=
                    "<a href='/$url'>
                          <img src='images/redball.gif'
                               style='height: 10px;'
                               border='0' alt='Admin On'></a>\n";
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	    }
	    else {
		$url = CreateURL("toggle", $login_user,
				 "type", "adminon", "value", 1);

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                $navbar_status .=
                    "<a href='/$url'>
                          <img src='images/greenball.gif'
                               style='height: 10px;'
                               border='0' alt='Admin Off'></a>\n";
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	    }
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            $navbar_status .= "</li>\n";
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	}
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        # Extra top margin to align with the rest of the buttons.
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	$navbar_status .=
            "<li id='loginstatus' class='apt-left' style='margin-top:7px'>".
	       ($login_user ? "<p class='navbar-text'>".
                 "$login_uid logged in</p>" : "") . "</li>\n";
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	if (!NOLOGINS()) {
	    if (!$login_user) {
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                $navbar_right .=
                    "<li id='signupitem' class='apt-left'>" .
                    "  <a class='btn btn-primary navbar-btn apt-navbar-btn'
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                                id='signupbutton'
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                                href='signup.php'>Sign Up</a></li>\n";
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		if ($page_title != "Login") {
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                    $navbar_right .=
                        "<li id='loginitem' class='apt-left'>" .
                        "  <a class='btn btn-primary navbar-btn apt-navbar-btn'
                                    id='loginbutton'>Login</a></li>\n";
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		}
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	    }
	    else {
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                $navbar_right .=
                    "<li class='apt-left hidden-xs'>" .
                    "  <a class='btn btn-primary navbar-btn apt-navbar-btn'
                                href='logout.php'>Logout</a></li>\n";
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	    }
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	}
    }
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    # This is for dealing with the narowest window class; we hide some of
    # the buttons when a logged in user shrinks the window the window down,
    # and turn them on inside the action menu.
    $hiddenxs = ($showmenus ? "hidden-xs" : "");
    
    echo "
         <div class='navbar navbar-static-top' style='margin-bottom: 10px'
              role='navigation'>
            <div class='navbar-inner'>
             <div class='brand'>
                 <img src='images/$APTLOGO'/>
             </div>
             <ul class='nav navbar-nav navbar-right apt-right'>
              $navbar_status
              $navbar_right
             </ul>
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             <ul class='nav navbar-nav navbar-left apt-left'>
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                <li class='apt-left $hiddenxs'>
                    <a class='btn btn-quickvm-home navbar-btn'
                       href='landing.php'>Home</a></li>\n";
    echo "      <li class='apt-left $hiddenxs'>".
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        "           <a class='btn btn-quickvm-home navbar-btn' ".
        "              href='$PORTAL_MANUAL' target='_blank'> ".
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        ($ISEMULAB || $ISPNET ? "Wiki" : "Manual") . "</a></li>\n";
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    if ($login_user && !($login_status & CHECKLOGIN_WEBONLY)) {
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	echo "  <li id='quickvm_actions_menu' class='dropdown apt-left'> ".
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	         "<a href='#'
                    class='dropdown-toggle btn btn-quickvm-home navbar-btn'
                       data-toggle='dropdown'>
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                    Actions <b class='caret'></b></a>
                  <ul class='dropdown-menu'>
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                   <li class='visible-xs navbar-nav-shortcuts'>
                       <a href='landing.php'>Home</a></li>
                   <li class='visible-xs navbar-nav-shortcuts'>
                       <a href='$PORTAL_MANUAL' target='_blank'> ".
                      ($ISEMULAB || $ISPNET ? "Wiki" : "Manual") . "</a></li>
                   <li class='visible-xs navbar-nav-shortcuts'>
                       <a href='logout.php'>Logout</a></li>
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                   <li><a href='user-dashboard.php#profiles'>My Profiles</a></li>
                   <li><a href='user-dashboard.php#experiments'>My Experiments</a></li>
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                   <li><a href='manage_profile.php'>Create Profile</a></li>
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                   <li><a href='instantiate.php'>Start Experiment</a></li>
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                   <li class='divider'></li>
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                   <li><a href='getcreds.php'>Download Credentials</a></li>
                   <li><a href='ssh-keys.php'>Manage SSH Keys</a></li>
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                   <li><a href='myaccount.php'>Manage Account</a></li>
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                   <li><a href='signup.php'>Start/Join Project</a></li>
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                   <li class='divider'></li>
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	           <li><a href='list-datasets.php?all=1'>List Datasets</a></li>
	           <li><a href='create-dataset.php'>Create Dataset</a></li>";
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       echo "      <li class='divider'></li>\n";
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       $then = time() - (90 * 3600 * 24);
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       echo "      <li><a href='activity.php?user=$login_uid&min=$then'>
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                            My History</a></li>\n";
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       echo "    </ul>
                </li>\n";
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       if (ISADMIN() || ISFOREIGN_ADMIN()) {
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           echo "<li id='quickvm_actions_menu' class='dropdown apt-left'>
	            <a href='#'
                        class='dropdown-toggle btn btn-quickvm-home navbar-btn'
                        data-toggle='dropdown'>
                    Admin <b class='caret'></b></a>
                  <ul class='dropdown-menu'>\n";
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           echo "  <li><a href='dashboard.php'>DashBoard</a></li>";
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           echo "  <li><a href='cluster-status.php'>Cluster Status</a></li>";
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           $then = time() - (30 * 3600 * 24);
           echo "  <li><a href='activity.php?min=$then'>
                            History Data</a></li>
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	           <li><a href='sumstats.php?min=$then'>Summary Stats</a></li>
	           <li><a href='ranking.php'>User/Proj Ranking</a></li>";
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           echo "<li><a href='myexperiments.php?extend=1'>
                            Extension Requests</a></li>";
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           echo "<li><a href='myexperiments.php?all=1'>
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                            All Experiments</a></li>
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	             <li><a href='myprofiles.php?all=1'>
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                            All Profiles</a></li>";
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           echo " </ul>
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                </li>\n";
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       }
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    }
    echo "   </ul>
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          </div>
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         </div>\n";
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    if (NOLOGINS()) {
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        $message = TBGetSiteVar("web/message");
    }
    else {
        #
        # Put the special message, if any, right below the header. Note that
        # the  negative margin is to put it flush below the navbar without
        # having to permanently remove the bottom margin on the navbar
        #
        $message = TBGetSiteVar($PORTAL_MOTD_SITEVAR);
    }
    if ($message && $message != "") {
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        echo "<div class='alert alert-warning alert-dismissible'
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                 role='alert' style='margin-top: -10px; padding: 5px;'>
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                <center>$message</center>
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          </div>";
    }
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    if ($login_user) {
        list($pcount, $phours) = Instance::CurrentUsage($login_user);
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        list($foo, $weeksusage) = Instance::WeeksUsage($login_user);
        list($foo, $monthsusage) = Instance::MonthsUsage($login_user);
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        list($rank, $ranktotal) = Instance::Ranking($login_user, 30);
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        if ($phours || $weeksusage || $monthsusage) {
            echo "<center style='margin-bottom: 5px; margin-top: -8px'>";
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            if ($phours) 
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                $phours = sprintf("%.2f", $phours);
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            echo "<span class='text-info'>
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                       Current Usage: $phours Node Hours</span>";
            if ($weeksusage) {
                $weeksusage = sprintf("%.0f", $weeksusage);
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                echo ", ";
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                echo "<span class='text-warning'>
                       Prev Week: $weeksusage</span>";
            }
            if ($monthsusage) {
                $monthsusage = sprintf("%.0f", $monthsusage);
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                echo ", ";
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                echo "<span class='text-danger'>
                       Prev Month: $monthsusage</span>";
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                if ($rank) {
                    echo "<span class='text-info'>
                          (30 day rank: $rank of $ranktotal users)</span>";
                }
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            }
            echo "<a href='#' class='btn btn-xs' data-toggle='modal' ".
                "data-target='#myusage_modal'> ".
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                "<span class='glyphicon glyphicon-question-sign' ".
                "      style='margin-bottom: 4px;'></span> ".
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                "</a>";
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            echo "</center>\n";
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        }
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        readfile("template/myusage.html");
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    }
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    if (!NOLOGINS() && !$login_user && $page_title != "Login") {
	SpitLoginModal("quickvm_login_modal");
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	SpitWaitModal("waitwait-modal");
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    }
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embed:
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    echo " <!-- Page content -->
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           <div class='container-fluid'>\n";
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};
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function SPITHEADER($thinheader = 0,
		    $ignore1 = NULL, $ignore2 = NULL, $ignore3 = NULL)
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{
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    global $PAGEHEADER_FUNCTION;

    $PAGEHEADER_FUNCTION($thinheader, $ignore1, $ignore2, $ignore3);
}

$PAGEFOOTER_FUNCTION = function($ignored = NULL) {
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    global $PORTAL_HELPFORUM, $PORTAL_NSFNUMBER, $embedded;

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    echo "</div>
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      </div>\n";
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    if ($embedded) {
	return;
    }
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    if ($PORTAL_NSFNUMBER) {
        SpitNSFModal();
    }
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    echo "
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      <!--- Footer -->
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      <div>
       <div id='footer'>
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        <div class='pull-left'>
          <a href='http://www.emulab.net' target='_blank'>
             Powered by
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             <img src='images/emulab-whiteout.png' id='elabpower'></a>
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        </div>
	<span>Question or comment? Join the
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           <a href='https://groups.google.com/forum/#!forum/${PORTAL_HELPFORUM}'
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              target='_blank'>Help Forum</a></span>
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           <div class='pull-right'>\n";
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    if ($PORTAL_NSFNUMBER) {
        echo " <a data-toggle='modal' style='margin-right: 10px;'
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              href='#nsf_supported_modal'
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	      data-target='#nsf_supported_modal'>Supported by NSF</a>\n";
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    }
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    echo "&copy; 2015
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          <a href='http://www.utah.edu' target='_blank'>
             The University of Utah</a>
        </div>
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       </div>
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      </div>
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      <!-- Placed at the end of the document so the pages load faster -->
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     </body></html>\n";
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};

function SPITFOOTER($ignored = null)
{
    global $PAGEFOOTER_FUNCTION;

    $PAGEFOOTER_FUNCTION($ignored);
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}

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function SPITUSERERROR($msg)
{
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    PAGEERROR($msg, 0);
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}

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#
# Does not return; page exits.
#
function SPITAJAX_RESPONSE($value)
{
    $results = array(
	'code'  => 0,
	'value' => $value
	);
    echo json_encode($results);
}

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function SPITAJAX_ERROR($code, $msg)
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{
    $results = array(
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	'code'  => $code,
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	'value' => $msg
	);
    echo json_encode($results);
}

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function SPITREQUIRE($main, $extras = "")
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{
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    global $spatrequired;
    
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    echo $extras;
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    echo "<script src='js/lib/bootstrap.js'></script>\n";
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    echo "<script src='js/lib/require.js' data-main='js/$main'></script>\n";
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    $spatrequired = 1;
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}

function SPITNULLREQUIRE()
{
    SPITREQUIRE("main");
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}

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#
# Spit out an info tooltip.
#
function SpitToolTip($info)
{
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    echo "<a href='#' class='btn btn-xs' data-toggle='popover' ".
	"data-content='$info'> ".
        "<span class='glyphicon glyphicon-question-sign'></span> ".
        "</a>\n";
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}

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#
# Spit out the verify modal. We are not using real password authentication
# like the rest of the Emulab website. Assumed to be inside of a form
# that handles a create button.
#
function SpitVerifyModal($id, $label)
{
    echo "<!-- This is the user verify modal -->
          <div id='$id' class='modal fade'>
            <div class='modal-dialog'>
            <div class='modal-content'>
               <div class='modal-header'>
                <button type='button' class='close' data-dismiss='modal'
                   aria-hidden='true'>&times;</button>
                <h3>Important</h3>
               </div>
               <div class='modal-body'>
                    <p>Check your email for a verification code, and
                       enter it here:</p>
                       <div class='form-group'>
                        <input name='verify' class='form-control'
                               placeholder='Verification code'
                               autofocus type='text' />
                       </div>
                       <div class='form-group'>
                        <button class='btn btn-primary form-control'
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                            id='verify_modal_submit'
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                            type='submit' name='create'>
                            $label</button>
                       </div>
               </div>
            </div>
            </div>
         </div>\n";
}

#
# Spit out the login modal. 
#
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function SpitLoginModal($id)
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{
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    global $PORTAL_PASSWORD_HELP;
    global $APTTITLE, $ISCLOUD;
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    $referrer = CleanString($_SERVER['REQUEST_URI']);
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?>
    <!-- This is the login modal -->
    <div id='<?php echo $id ?>' class='modal fade' role='dialog'>
        <div class='modal-dialog'>
        <div id='quickvm_login_form_error'
             class='align-center'></div>
        <div class='modal-content'>
           <div class='modal-header'>
            <button type='button' class='close' data-dismiss='modal'
               aria-hidden='true'>&times;</button>
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               <h4 class='modal-title'>Log in to <?php echo $APTTITLE ?></h4>
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           </div>
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           <form id='quickvm_login_form'
                 role='form'
                 method='post' action='login.php'>
           <input type=hidden name=referrer value='<?php echo $referrer ?>'>
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           <div class='modal-body form-horizontal'>
             <div class='form-group'>
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                <label for='uid' class='col-sm-2 control-label'>Username</label>
                <div class='col-sm-10'>
                    <input name='uid' class='form-control'
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                           placeholder='<?php echo $PORTAL_PASSWORD_HELP ?>'
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                           autofocus type='text'>
                </div>
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             </div>
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             <div class='form-group'>
                <label for='password' class='col-sm-2 control-label'>Password
					  </label>
                <div class='col-sm-10'>
                   <input name='password' class='form-control'
                          placeholder='Password'
                          type='password'>
                </div>
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             </div>
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             <div class='form-group'>
               <div class='col-sm-offset-2 col-sm-10'>
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<?php
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    if ($ISCLOUD) {
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	?>
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                 <button class='btn btn-info btn-sm pull-left' disabled
		    type='button'
                    data-toggle="tooltip" data-placement="left"
		    title="You can use your geni credentials to login"
                    id='quickvm_geni_login_button'>Geni User?</button>
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        <?php
    }
?>
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                 <button class='btn btn-primary btn-sm pull-right'
                         id='quickvm_login_modal_button'
                         type='submit' name='login'>Login</button>
               </div>
             </div>
           </div>
           </form>
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        </div>
        </div>
     </div>
<?php
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}

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#
# Please Wait.
#
function SpitWaitModal($id)
{
    echo "<!-- This is the Please Wait modal -->
          <div id='$id' class='modal fade'>
            <div class='modal-dialog'>
            <div class='modal-content'>
               <div class='modal-header'>
                <center><h3>Please Wait</h3></center>
               </div>
               <div class='modal-body'>
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                 <center><img src='images/spinner.gif' /></center>
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               </div>
            </div>
            </div>
         </div>\n";
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    ?>
	<script>
	function ShowWaitModal(name) { $('#' + name).modal('show'); }
	function HideWaitModal(name) { $('#' + name).modal('hide'); }
	</script>
    <?php
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}

#
# Oops modal.
#
function SpitOopsModal($id)
{
    echo "<!-- This is the Oops modal -->
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          <div id='${id}_modal' class='modal fade'>
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            <div class='modal-dialog'>
            <div class='modal-content'>
               <div class='modal-header'>
                 <button type='button'
                      class='btn btn-default btn-sm pull-right' 
                      data-dismiss='modal' aria-hidden='true'>
                   Close</button>
                 <center><h3>Oops!</h3></center>
               </div>
               <div class='modal-body'>
                 <div id='${id}_text'></div>
               </div>
            </div>
            </div>
         </div>\n";
}

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function SpitNSFModal()
{
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    global $PORTAL_NSFNUMBER;
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    echo "<!-- This is the NSF Supported modal -->
          <div id='nsf_supported_modal' class='modal fade'>
            <div class='modal-dialog'>
             <div class='modal-content'>
              <div class='modal-body'>
                This material is based upon work supported by the
                National Science Foundation under Grant
631
                No. ${PORTAL_NSFNUMBER}. Any opinions, findings, and
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                conclusions or recommendations expressed in this
                material are those of the author(s) and do not
                necessarily reflect the views of the National Science
                Foundation.
                <br><br>
                <center>
                <button type='button'
                     class='btn btn-default btn-sm' 
                     data-dismiss='modal' aria-hidden='true'>
                  Close</button>
                </center>
              </div>
             </div>
            </div>
         </div>\n";
}

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#
# Generate an authentication object to pass to the browser that
# is passed to the web server on boss. This is used to grant
# permission to the user to invoke ssh to a local node using their
# emulab generated (no passphrase) key. This is basically a clone
# of what GateOne does, but that code was a mess. 
#
function SSHAuthObject($uid, $nodeid)
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{
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    global $USERNODE;
	
    $file = "/usr/testbed/etc/sshauth.key";
    
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    #
    # We need the secret that is shared with ops.
    #
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    $fp = fopen($file, "r");
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    if (! $fp) {
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	TBERROR("Error opening $file", 0);
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	return null;
    }
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    $key = fread($fp, 128);
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    fclose($fp);
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    if (!$key) {
	TBERROR("Could not get key from $file", 0);
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	return null;
    }
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    $key   = chop($key);
    $stuff = GENHASH();
    $now   = time();
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    $authobj = array('uid'       => $uid,
		     'stuff'     => $stuff,
		     'nodeid'    => $nodeid,
		     'timestamp' => $now,
		     'baseurl'   => "https://${USERNODE}",
		     'signature_method' => 'HMAC-SHA1',
		     'api_version' => '1.0',
		     'signature' => hash_hmac('sha1',
					      $uid . $stuff . $nodeid . $now,
					      $key),
    );
    return json_encode($authobj);
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}

#
# This is a little odd; since we are using our local CM to create
# the experiment, we can just ask for the graphic directly.
#
function GetTopoMap($uid, $pid, $eid)
{
    global $TBSUEXEC_PATH;
    $xmlstuff = "";
    
    if ($fp = popen("$TBSUEXEC_PATH nobody nobody webvistopology ".
		    "-x -s $uid $pid $eid", "r")) {

	while (!feof($fp) && connection_status() == 0) {
	    $string = fgets($fp);
	    if ($string) {
		$xmlstuff .= $string;
	    }
	}
	return $xmlstuff;
    }
    else {
	return "";
    }
}

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#
# Redirect request to https
#
function RedirectSecure()
{
    global $APTHOST;

    if (!isset($_SERVER["SSL_PROTOCOL"])) {
	header("Location: https://$APTHOST". $_SERVER['REQUEST_URI']);
	exit();
    }
}

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#
# Redirect to the login page()
#
function RedirectLoginPage()
{
    # HTTP_REFERER will not work reliably when redirecting so
    # pass in the URI for this page as an argument
    header("Location: login.php?referrer=".
	   urlencode($_SERVER['REQUEST_URI']));
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    exit(0);
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}

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#
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# Check the login and redirect to login page. We use NONLOCAL modifier
# since the classic emulab interface refuses service to nonlocal users.
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#
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function CheckLoginOrRedirect($modifier = 0)
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{
    RedirectSecure();
    
    $check_status = 0;
    $this_user    = CheckLogin($check_status);
    if (! ($check_status & CHECKLOGIN_LOGGEDIN)) {
	RedirectLoginPage();
    }
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    CheckLoginConditions($check_status & ~($modifier|CHECKLOGIN_NONLOCAL));
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    return $this_user;
}

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?>