config = $GLOBALS['config']; $this->config['serverTitle'] = 'Maps hosted with TileServer-php v2.0'; $this->config['availableFormats'] = ['png', 'jpg', 'jpeg', 'gif', 'webp', 'pbf', 'hybrid']; $this->config['dataRoot'] = ''; if($this->config['dataRoot'] != '' && substr($this->config['dataRoot'], -1) != '/' ){ $this->config['dataRoot'] .= '/'; } //Get config from enviroment $envServerTitle = getenv('serverTitle'); if($envServerTitle !== false){ $this->config['serverTitle'] = $envServerTitle; } $envBaseUrls = getenv('baseUrls'); if($envBaseUrls !== false){ $this->config['baseUrls'] = is_array($envBaseUrls) ? $envBaseUrls : explode(',', $envBaseUrls); } $envTemplate = getenv('template'); if($envBaseUrls !== false){ $this->config['template'] = $envTemplate; } } /** * Looks for datasets */ public function setDatasets() { $mjs = glob('*/metadata.json'); $mbts = glob($this->config['dataRoot'] . '*.mbtiles'); if ($mjs) { foreach (array_filter($mjs, 'is_readable') as $mj) { $layer = $this->metadataFromMetadataJson($mj); array_push($this->fileLayer, $layer); } } if ($mbts) { foreach (array_filter($mbts, 'is_readable') as $mbt) { $this->dbLayer[] = $this->metadataFromMbtiles($mbt); } } } /** * Processing params from router ////.ext * @param array $params */ public function setParams($params) { if (isset($params[1])) { $this->layer = $params[1]; } $params = array_reverse($params); if (isset($params[2])) { $this->z = $params[2]; $this->x = $params[1]; $file = explode('.', $params[0]); $this->y = $file[0]; $this->ext = isset($file[1]) ? $file[1] : null; } } /** * Get variable don't independent on sensitivity * @param string $key * @return boolean */ public function getGlobal($isKey) { $get = $_GET; foreach ($get as $key => $value) { if (strtolower($isKey) == strtolower($key)) { return $value; } } return false; } /** * Testing if is a database layer * @param string $layer * @return boolean */ public function isDBLayer($layer) { if (is_file($this->config['dataRoot'] . $layer . '.mbtiles')) { return true; } else { return false; } } /** * Testing if is a file layer * @param string $layer * @return boolean */ public function isFileLayer($layer) { if (is_dir($layer)) { return true; } else { return false; } } /** * Get metadata from metadataJson * @param string $jsonFileName * @return array */ public function metadataFromMetadataJson($jsonFileName) { $metadata = json_decode(file_get_contents($jsonFileName), true); $metadata['basename'] = str_replace('/metadata.json', '', $jsonFileName); return $this->metadataValidation($metadata); } /** * Loads metadata from MBtiles * @param string $mbt * @return object */ public function metadataFromMbtiles($mbt) { $metadata = []; $this->DBconnect($mbt); $result = $this->db->query('select * from metadata'); $resultdata = $result->fetchAll(); foreach ($resultdata as $r) { $value = preg_replace('/(\\n)+/', '', $r['value']); $metadata[$r['name']] = addslashes($value); } if (!array_key_exists('minzoom', $metadata) || !array_key_exists('maxzoom', $metadata) ) { // autodetect minzoom and maxzoom $result = $this->db->query('select min(zoom_level) as min, max(zoom_level) as max from tiles'); $resultdata = $result->fetchAll(); if (!array_key_exists('minzoom', $metadata)){ $metadata['minzoom'] = $resultdata[0]['min']; } if (!array_key_exists('maxzoom', $metadata)){ $metadata['maxzoom'] = $resultdata[0]['max']; } } // autodetect format using JPEG magic number FFD8 if (!array_key_exists('format', $metadata)) { $result = $this->db->query('select hex(substr(tile_data,1,2)) as magic from tiles limit 1'); $resultdata = $result->fetchAll(); $metadata['format'] = ($resultdata[0]['magic'] == 'FFD8') ? 'jpg' : 'png'; } // autodetect bounds if (!array_key_exists('bounds', $metadata)) { $result = $this->db->query('select min(tile_column) as w, max(tile_column) as e, min(tile_row) as s, max(tile_row) as n from tiles where zoom_level='.$metadata['maxzoom']); $resultdata = $result->fetchAll(); $w = -180 + 360 * ($resultdata[0]['w'] / pow(2, $metadata['maxzoom'])); $e = -180 + 360 * ((1 + $resultdata[0]['e']) / pow(2, $metadata['maxzoom'])); $n = $this->row2lat($resultdata[0]['n'], $metadata['maxzoom']); $s = $this->row2lat($resultdata[0]['s'] - 1, $metadata['maxzoom']); $metadata['bounds'] = implode(',', [$w, $s, $e, $n]); } $mbt = explode('.', $mbt); $metadata['basename'] = $mbt[0]; $metadata = $this->metadataValidation($metadata); return $metadata; } /** * Convert row number to latitude of the top of the row * @param integer $r * @param integer $zoom * @return integer */ public function row2lat($r, $zoom) { $y = $r / pow(2, $zoom - 1 ) - 1; return rad2deg(2.0 * atan(exp(3.191459196 * $y)) - 1.57079632679489661922); } /** * Valids metaJSON * @param object $metadata * @return object */ public function metadataValidation($metadata) { if (!array_key_exists('bounds', $metadata)) { $metadata['bounds'] = [-180, -85.06, 180, 85.06]; } elseif (!is_array($metadata['bounds'])) { $metadata['bounds'] = array_map('floatval', explode(',', $metadata['bounds'])); } if (!array_key_exists('profile', $metadata)) { $metadata['profile'] = 'mercator'; } if (array_key_exists('minzoom', $metadata)){ $metadata['minzoom'] = intval($metadata['minzoom']); }else{ $metadata['minzoom'] = 0; } if (array_key_exists('maxzoom', $metadata)){ $metadata['maxzoom'] = intval($metadata['maxzoom']); }else{ $metadata['maxzoom'] = 18; } if (!array_key_exists('format', $metadata)) { if(array_key_exists('tiles', $metadata)){ $pos = strrpos($metadata['tiles'][0], '.'); $metadata['format'] = trim(substr($metadata['tiles'][0], $pos + 1)); } } $formats = $this->config['availableFormats']; if(!in_array(strtolower($metadata['format']), $formats)){ $metadata['format'] = 'png'; } if (!array_key_exists('scale', $metadata)) { $metadata['scale'] = 1; } if(!array_key_exists('tiles', $metadata)){ $tiles = []; foreach ($this->config['baseUrls'] as $url) { $url = '' . $this->config['protocol'] . '://' . $url . '/' . $metadata['basename'] . '/{z}/{x}/{y}'; if(strlen($metadata['format']) <= 4){ $url .= '.' . $metadata['format']; } $tiles[] = $url; } $metadata['tiles'] = $tiles; } return $metadata; } /** * SQLite connection * @param string $tileset */ public function DBconnect($tileset) { try { $this->db = new PDO('sqlite:' . $tileset, '', '', [PDO::ATTR_PERSISTENT => true]); } catch (Exception $exc) { echo $exc->getTraceAsString(); die; } if (!isset($this->db)) { header('Content-type: text/plain'); echo 'Incorrect tileset name: ' . $tileset; die; } } /** * Check if file is modified and set Etag headers * @param string $filename * @return boolean */ public function isModified($filename) { $filename = $this->config['dataRoot'] . $filename . '.mbtiles'; $lastModifiedTime = filemtime($filename); $eTag = md5($lastModifiedTime); header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $lastModifiedTime) . ' GMT'); header('Etag:' . $eTag); if (@strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) == $lastModifiedTime || @trim($_SERVER['HTTP_IF_NONE_MATCH']) == $eTag) { return true; } else { return false; } } /** * Returns tile of dataset * @param string $tileset * @param integer $z * @param integer $y * @param integer $x * @param string $ext */ public function renderTile($tileset, $z, $y, $x, $ext) { if ($this->isDBLayer($tileset)) { if ($this->isModified($tileset) == true) { header('Access-Control-Allow-Origin: *'); header('HTTP/1.1 304 Not Modified'); die; } $this->DBconnect($this->config['dataRoot'] . $tileset . '.mbtiles'); $z = floatval($z); $y = floatval($y); $x = floatval($x); $flip = true; if ($flip) { $y = pow(2, $z) - 1 - $y; } $result = $this->db->query('select tile_data as t from tiles where zoom_level=' . $z . ' and tile_column=' . $x . ' and tile_row=' . $y); $data = $result->fetchColumn(); if (!isset($data) || $data === false) { //if tile doesn't exist //select scale of tile (for retina tiles) $result = $this->db->query('select value from metadata where name="scale"'); $resultdata = $result->fetchColumn(); $scale = isset($resultdata) && $resultdata !== false ? $resultdata : 1; $this->getCleanTile($scale, $ext); } else { $result = $this->db->query('select value from metadata where name="format"'); $resultdata = $result->fetchColumn(); $format = isset($resultdata) && $resultdata !== false ? $resultdata : 'png'; if ($format == 'jpg') { $format = 'jpeg'; } if ($format == 'pbf') { header('Content-type: application/x-protobuf'); header('Content-Encoding:gzip'); } else { header('Content-type: image/' . $format); } header('Access-Control-Allow-Origin: *'); echo $data; } } elseif ($this->isFileLayer($tileset)) { $name = './' . $tileset . '/' . $z . '/' . $x . '/' . $y; $mime = 'image/'; if($ext != null){ $name .= '.' . $ext; } if ($fp = @fopen($name, 'rb')) { if($ext != null){ $mime .= $ext; }else{ //detect image type from file $mimetypes = ['gif', 'jpeg', 'png']; $mime .= $mimetypes[exif_imagetype($name) - 1]; } header('Access-Control-Allow-Origin: *'); header('Content-Type: ' . $mime); header('Content-Length: ' . filesize($name)); fpassthru($fp); die; } else { //scale of tile (for retina tiles) $meta = json_decode(file_get_contents($tileset . '/metadata.json')); if(!isset($meta->scale)){ $meta->scale = 1; } } $this->getCleanTile($meta->scale, $ext); } else { header('HTTP/1.1 404 Not Found'); echo 'Server: Unknown or not specified dataset "' . $tileset . '"'; die; } } /** * Returns clean tile * @param integer $scale Default 1 */ public function getCleanTile($scale = 1, $format = 'png') { switch ($format) { case 'pbf': header('Access-Control-Allow-Origin: *'); header('HTTP/1.1 204 No Content'); header('Content-Type: application/json; charset=utf-8'); break; case 'webp': header('Access-Control-Allow-Origin: *'); header('Content-type: image/webp'); echo base64_decode('UklGRhIAAABXRUJQVlA4TAYAAAAvQWxvAGs='); break; case 'jpg': header('Access-Control-Allow-Origin: *'); header('Content-type: image/jpg'); echo base64_decode('/9j/2wBDAAMCAgICAgMCAgIDAwMDBAYEBAQEBAgGBgUGCQgKCgkICQkKDA8MCgsOCwkJDRENDg8QEBEQCgwSExIQEw8QEBD/yQALCAABAAEBAREA/8wABgAQEAX/2gAIAQEAAD8A0s8g/9k='); break; case 'png': default: header('Access-Control-Allow-Origin: *'); header('Content-type: image/png'); // 256x256 transparent optimised png tile echo pack('H*', '89504e470d0a1a0a0000000d494844520000010000000100010300000066bc3a2500000003504c5445000000a77a3dda0000000174524e530040e6d8660000001f494441541819edc1010d000000c220fba77e0e37600000000000000000e70221000001f5a2bd040000000049454e44ae426082'); break; } die; } /** * Returns tile's UTFGrid * @param string $tileset * @param integer $z * @param integer $y * @param integer $x */ public function renderUTFGrid($tileset, $z, $y, $x, $flip = true) { if ($this->isDBLayer($tileset)) { if ($this->isModified($tileset) == true) { header('HTTP/1.1 304 Not Modified'); } if ($flip) { $y = pow(2, $z) - 1 - $y; } try { $this->DBconnect($this->config['dataRoot'] . $tileset . '.mbtiles'); $query = 'SELECT grid FROM grids WHERE tile_column = ' . $x . ' AND ' . 'tile_row = ' . $y . ' AND zoom_level = ' . $z; $result = $this->db->query($query); $data = $result->fetch(PDO::FETCH_ASSOC); if ($data !== false) { $grid = gzuncompress($data['grid']); $grid = substr(trim($grid), 0, -1); //adds legend (data) to output $grid .= ',"data":{'; $kquery = 'SELECT key_name as key, key_json as json FROM grid_data ' . 'WHERE zoom_level=' . $z . ' and ' . 'tile_column=' . $x . ' and tile_row=' . $y; $result = $this->db->query($kquery); while ($r = $result->fetch(PDO::FETCH_ASSOC)) { $grid .= '"' . $r['key'] . '":' . $r['json'] . ','; } $grid = rtrim($grid, ',') . '}}'; header('Access-Control-Allow-Origin: *'); if (isset($_GET['callback']) && !empty($_GET['callback'])) { header('Content-Type:text/javascript charset=utf-8'); echo $_GET['callback'] . '(' . $grid . ');'; } else { header('Content-Type:text/javascript; charset=utf-8'); echo $grid; } } else { header('Access-Control-Allow-Origin: *'); echo '{}'; die; } } catch (Exception $e) { header('Content-type: text/plain'); print 'Error querying the database: ' . $e->getMessage(); } } else { echo 'Server: no MBTiles tileset'; die; } } /** * Returns server info */ public function getInfo() { $this->setDatasets(); $maps = array_merge($this->fileLayer, $this->dbLayer); header('Content-Type: text/html;charset=UTF-8'); echo '' . $this->config['serverTitle'] . '' . '

' . $this->config['serverTitle'] . '

' . 'TileJSON service: ' . $this->config['baseUrls'][0] . '/index.json
' . 'WMTS service: ' . $this->config['baseUrls'][0] . '/wmts
' . 'TMS service: ' . $this->config['baseUrls'][0] . '/tms'; foreach ($maps as $map) { $extend = '[' . implode($map['bounds'], ', ') . ']'; echo '

Tileset: ' . $map['basename'] . '
' . 'Metadata: ' . $this->config['baseUrls'][0] . '/' . $map['basename'] . '.json
' . 'Bounds: ' . $extend ; if(isset($map['crs'])){echo '
CRS: ' . $map['crs'];} echo '

'; } echo '

'; echo ''; } /** * Returns html viewer */ public function getHtml() { $this->setDatasets(); $maps = array_merge($this->fileLayer, $this->dbLayer); if (isset($this->config['template']) && file_exists($this->config['template'])) { $baseUrls = $this->config['baseUrls']; $serverTitle = $this->config['serverTitle']; include_once $this->config['template']; } else { header('Content-Type: text/html;charset=UTF-8'); echo '' . $this->config['serverTitle'] . ''; echo '

Welcome to ' . $this->config['serverTitle'] . '

This server distributes maps to desktop, web, and mobile applications.

The mapping data are available as OpenGIS Web Map Tiling Service (OGC WMTS), OSGEO Tile Map Service (TMS), and popular XYZ urls described with TileJSON metadata.

'; if (!isset($maps)) { echo '

No maps available yet

Ready to go - just upload some maps into directory:' . getcwd() . '/ on this server.

Note: The maps can be a directory with tiles in XYZ format with metadata.json file.
You can easily convert existing geodata (GeoTIFF, ECW, MrSID, etc) to this tile structure with MapTiler Cluster or open-source projects such as GDAL2Tiles or MapTiler or simply upload any maps in MBTiles format made by TileMill. Helpful is also the mbutil tool. Serving directly from .mbtiles files is supported, but with decreased performance.

'; } else { echo '

" . $map['name'] . '

'; } echo ''; } } }