Support scripts for the applet.

www/wireless-stats/getdata.php3

+<?php
+#
+# EMULAB-COPYRIGHT
+# Copyright (c) 2000-2005 University of Utah and the Flux Group.
+# All rights reserved.
+#
+chdir("..");
+include("defs.php3");
+
+$uid = GETLOGIN();
+LOGGEDINORDIE($uid);
+
+#$TARGET_FILE = "wireless-stats.data.zip";
+$TARGET_FILE = "wireless-stats.data";
+$DEV_PATH = "devel/johnsond/";
+
+function death($msg) {
+    PAGEHEADER("Wireless Connectivity Data");
+    PAGEARGERROR($msg);
+    PAGEFOOTER();
+
+    exit(1);
+}
+
+## we need a type and a dataset.
+if (isset($type) && isset($dataset)) {
+    $dbq = DBQueryFatal("select * from wireless_stats where name='$dataset'");
+
+    if (mysql_num_rows($dbq)) {
+        $row = mysql_fetch_array($dbq);
+        $floor = $row["floor"];
+        $building = $row["building"];
+        $eid = $row["data_eid"];
+        $pid = $row["data_pid"];
+        $altsrc = $row["altsrc"];
+
+        ## generate the data
+	if ($type == "data") {
+            ## find the file...
+            #$path = "/proj/$pid/exp/$eid/logs/$TARGET_FILE";
+            $path = "/usr/testbed/devel/johnsond/www/wireless-stats/$pid.$eid-$TARGET_FILE";
+            if (file_exists($path)) {
+                ## read and dump the file:
+                //header("Content-Type: application/zip");
+                //header("Content-Length: " . (filesize($path)));
+                header("Content-Type: text/plain");
+                ## obviously, this duplication of headers might not
+                ## make all browsers very happy... if there's a 
+                ## problem with the readfile call.
+                readfile($path) or death("Error while reading data file!");
+            }
+            else if ($altsrc != "" && file_exists($altsrc)) {
+                header("Content-Type: text/plain");
+                header("Content-Length: " . (filesize($altsrc)));
+                readfile($altsrc) 
+                    or death("Error while reading alternate data file!");
+            }
+            else {
+                death("Unable to find any data file at $path !");
+            }
+        }
+        else if ($type == "map") {
+            ## generate a map and dump the data.  then unlink it...
+            $tmpfile = tempnam("/tmp","wimap");
+            $gen_args = "-o $tmpfile -t -z -y -f $floor $building";
+            $retval = SUEXEC($uid,"nobody","webfloormap $gen_args",
+                             SUEXEC_ACTION_IGNORE);
+            if ($retval) {
+                SUEXECERROR(SUEXEC_ACTION_USERERROR);
+                # Never returns.
+                die("");
+            }
+
+            #header("Content-type: image/jpg");
+            #header("Content-Length: " . (filesize($tmpfile . ".jpg")));
+            if (($fp = fopen("$tmpfile.jpg", "r"))) {
+                header("Content-type: image/jpg");
+                fpassthru($fp);
+            }
+            #readfile($tmpfile . ".jpg") or death("Error reading map image file!");
+            #unlink($tmpfile . ".jpg");
+        }
+        else if ($type == "posit") {
+            $dbq = DBQueryFatal("select node_id,loc_x,loc_y,loc_z from " . 
+                "location_info where floor=$floor and building='$building'");
+            if (mysql_num_rows($dbq)) {
+                header("Content-Type: text/plain");
+
+                while ($row = mysql_fetch_array($dbq)) {
+                    echo "" . $row["node_id"] . " \t" . $row["loc_x"] . 
+                        " \t" . $row["loc_y"] . " \t" . $row["loc_z"] . "\n";
+                }
+            }
+            else {
+                death("No position information for floor $floor and " . 
+                      "building $building!");
+            }
+          
+        }
+        else {
+            death("Unknown type of output requested!");
+        }
+    }
+    else {
+        death("Unknown dataset.");
+    }
+}
+else {
+    ## error
+    death("You must supply a valid dataset name and type of data to generate!");
+}
+
+## we're good, theoretically...
+exit(0);
+
+?>

www/wireless-stats/statsapp.php3

+<?php
+#
+# EMULAB-COPYRIGHT
+# Copyright (c) 2000-2006 University of Utah and the Flux Group.
+# All rights reserved.
+#
+chdir("..");
+include("defs.php3");
+
+$uid = GETLOGIN();
+LOGGEDINORDIE($uid);
+
+PAGEHEADER("Wireless/WSN Testbed Connectivity Statistics");
+
+## now do some text
+
+?>
+
+<h3>Instructions</h3>
+
+This applet allows you to inspect the connectivity properties of
+various Emulab wireless testbeds and areas.  At the moment, you
+can only view statistics for the static WSN testbed, but soon 
+you'll be able to inspect the various floors Emulab's wifi testbed
+as well.  The display shows nodes, "links" between them, and the 
+percentage of loss on each link.
+<p>
+
+To use this applet, simply select a dataset.  Then, if the dataset
+offers multiple power levels, choose one that corresponds to your 
+intended use.  By default, all wireless "links" that can transmit 
+some data between any nodes are displayed.  You can select a different
+mode if desirable.  "Select by source" means that links between nodes
+you select in the list below and any other nodes are shown.  "Select
+by receiver" means that all links between the receivers you selected 
+and any senders are shown.  You can also modify the selected nodes by 
+clicking on the map on the appropriate node circles.  To add a node to a
+selection, hold down the shift key and left-click on the node.  To remove
+a node from a selection, hold down the shift key and click the node.  To
+remove all nodes from a selection, click anywhere on the map outside of any
+nodes.  You can edit the current selection using the map, the list, or a
+combination.
+<p>
+
+Since some maps may get cluttered with any links, we provide some 
+limiting options to reduce the number of links shown in a sensible manner.  
+You can limit by "k best neighbors", which filters out all but the 
+N best links leaving or entering the selected nodes; N is the number 
+you enter in the box just below this limit option.  You can also 
+limit by setting a threshold; only nodes with loss rates above this 
+threshold are shown.  To remove the limit, choose the "None" limit.
+
+Finally, an additional option allows you to never see links with 0% 
+connectivity.
+<p>
+
+<?php
+
+##
+## need to find out what datasets exist
+##
+$dbq = DBQueryFatal("select name from wireless_stats");
+$count = 0;
+$strlist = "";
+
+while ($row = mysql_fetch_array($dbq)) {
+    $name = $row["name"];
+    if ($count > 0) {
+        $strlist = $strlist . ",";
+    }
+    ++$count;
+
+    $strlist = $strlist . $name;
+}
+
+$auth    = $HTTP_COOKIE_VARS[$TBAUTHCOOKIE];
+
+## the requester will need to append '&dataset=...'
+$mapurl = "getdata.php3?type=map";
+$dataurl = "getdata.php3?type=data";
+$positurl = "getdata.php3?type=posit";
+
+echo "<applet name='wireless-stats' code='WirelessMapApplet.class'
+              archive='wireless-stats.jar'
+              width='1024' height='768'
+              alt='You need java to run this applet'>
+            <param name='uid' value='$uid'>
+            <param name='auth' value='$auth'>
+	    <param name='datasets' value='$strlist'>
+	    <param name='mapurl' value='$mapurl'>
+	    <param name='dataurl' value='$dataurl'>
+            <param name='positurl' value='$positurl'>
+     </applet>\n";
+
+
+PAGEFOOTER();
+?>