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blha303/gpstrack.php

Created March 3, 2015 13:19
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Google Maps display for a csv-formatted list of dates/latitudes/longitudes/accuracy-in-metres.
Raw
gpstrack.php
<?php
$passwdfile = "/path/to/file";
$logpath = "/path/to/file"; // should be a csv file with date,lat,long,hor-acc
// For json
foreach (apache_request_headers() as $header => $value) { if ($header == "Accept") { $accept = $value; } }
// Variable checks
$allowed = isset($_GET['allowed']);
if ($allowed && !$_GET['allowed'] == file_get_contents($passwdfile)) {
die("Sorry, this needs a password now.<form><input type=text name=allowed><input type=submit></form>");
}
$nocir = !isset($_GET['nocircles']);
if (isset($_GET['count'])) {
$count = intval($_GET['count']);
} else {
$count = 10;
}
// Getting data
if (isset($_GET['date']) && intval($_GET['date']) != 0 && strlen($_GET['date']) == 8) {
$date = intval($_GET['date']);
$datarr = explode("\n", shell_exec("grep $date $logpath --color=never"));
array_pop($datarr);
} else {
$datarr = explode("\n", shell_exec("tail -n$count $logpath"));
}
// Correcting for allowed data
$last = str_getcsv(array_pop($datarr));
if (!$allowed) $last = array($last[0], substr($last[1],0,6), substr($last[2],0,6));
// Creating static image url
$imageurl = "https://maps.googleapis.com/maps/api/staticmap?scale=2&format=jpg&zoom=";
if ($allowed) $imageurl .= "18";
else $imageurl .= "15";
$imageurl .= "&center=" . $last[1] . "," . $last[2];
if ($allowed) $imageurl .= "&markers=" . $last[1] . "," . $last[2];
// Json returning
if (isset($_GET['json'])) {
header("Content-Type: application/json");
$arr = array();
foreach ($datarr as $item) {
$tmp = str_getcsv($item);
if (!$allowed) $tmp = array($tmp[0], substr($tmp[1],0,6), substr($tmp[2],0,6), "1111");
$arr[] = $tmp;
}
echo json_encode(array("markers" => $arr, "imageurl" => $imageurl));
die();
}
// Mobile support {
require_once 'Mobile_Detect.php'; // http://mobiledetect.net/ remove this block if you don't need this functionality
$detect = new Mobile_Detect;
if (isset($_GET['mobile']) || $detect->isMobile()) { ?>
<head>
<meta http-equiv="refresh" content="60">
<script>
document.addEventListener('DOMContentLoaded',function(){
var w = Math.floor(Math.max(document.documentElement.clientWidth, window.innerWidth || 0) / 2)
var h = Math.floor(Math.max(document.documentElement.clientHeight, window.innerHeight || 0) / 2)
document.getElementById('i').src = "<?php echo $imageurl; ?>&size=" + w + "x" + h;
});
</script>
</head>
<body>
<img src="nothing" id="i" />
</body>
<?php die();}
// }
// Generating lists of markers/circles
if ($allowed) {
$markers = "[";
if ($nocir) {
$circles = "[";
$ciroptions = "{strokeColor:'#FF0000',strokeOpacity:0.8,strokeWeight:2,fillColor:'#AA0000',fillOpacity:0.2,map:map";
}
foreach ($datarr as $item) {
$item = str_getcsv($item);
$markers .= 'new google.maps.Marker({map: map, position: new google.maps.LatLng(' . $item[1] . ', ' . $item[2] . '),title: "' . $item[0] . ' to ' . $item[3] . 'm",icon: "http://maps.google.com/mapfiles/ms/icons/red-dot.png"}),';
if ($nocir) {
$circles .= 'new google.maps.Circle(' . $ciroptions . ',radius: ' . $item[3] . '}),';
}
}
$markers .= ']';
if ($nocir) {
$circles .= ']';
}
}
// Start html
?>
<!DOCTYPE html>
<html>
<head>
<?php if ($count < 50) { ?>
<meta http-equiv="refresh" content="60">
<?php } ?>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map-canvas { height: 100% }
</style>
<script type="text/javascript"
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCE7QCD1wjjjspuEa7ABtKGpJxttNOgtIU&sensor=false">
</script>
<script type="text/javascript">
var geocoder;
var map;
var markers;
var circles;
var topcircle;
<?php if (!$allowed) { ?>
var data = <?php echo json_encode($last); ?>;
var coords = [new google.maps.LatLng(data[1], data[2])];
<?php } ?>
function initialize() {
geocoder = new google.maps.Geocoder();
var mapOptions = {
center: <?php echo 'new google.maps.LatLng(' . $last[1] . ', ' . $last[2] . ')'; ?>,
zoom: <?php if (isset($_GET['zoom'])) { echo intval($_GET['zoom']); } else { if ($allowed) { echo "18"; } else { echo "15"; } }; echo "\n"; ?>
};
map = new google.maps.Map(document.getElementById("map-canvas"), mapOptions);
<?php if ($allowed) { ?>
markers = <?php echo $markers; ?>;
markers[markers.length-1].setOptions({animation:google.maps.Animation.DROP,icon:"http://maps.google.com/mapfiles/ms/icons/blue-dot.png",zIndex:100});
var coords = [];
for (i=0;i<markers.length;i++) {
coords.push(markers[i].getPosition());
}
var recentPath = new google.maps.Polyline({
path: coords,
geodesic: true,
strokeColor: '#FF0000',
strokeOpacity: 1.0,
strokeWeight: 2
});
recentPath.setMap(map);
<?php if ($nocir) { ?>
circles = <?php echo $circles; ?>;
for (i=0;i<circles.length;i++) {
circles[i].bindTo('center', markers[i], 'position');
markers[i]._myCircle = circles[i];
circles[i].title = markers[i].title;
}
topcircle = circles[circles.length-1];
topcircle.setOptions({fillColor: '#0000AA', strokeColor: '#0000FF', url: "<?php echo $_SERVER['REQUEST_URI']."&nocircles" ?>"});
google.maps.event.addListener(topcircle, 'click', function() {
window.location = topcircle.url;
});
<?php } ?>
<?php } else { ?>
var infowindow = new google.maps.InfoWindow({
content: "blha303's last recorded location (accurate to 1.1km approx)"
});
var circle = new google.maps.Circle({
map: map,
center: coords[coords.length-1],
radius: 1100,
fillColor: '#AA0000',
fillOpacity: 0.1
});
google.maps.event.addListener(circle, 'click', function() {
infowindow.open(map,circle);
});
<?php } ?>
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map-canvas"/>
</body>
</html>
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