Compare commits
5 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
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b7d7d63a85 | ||
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7ee17dd0b2 | ||
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e2dfefa119 | ||
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742431ecfd | ||
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dc87a97804 |
@ -1,5 +1,5 @@
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<FilesMatch "config\.php">
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Order allow,deny
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<FilesMatch "^(?!index\.php$).+\.php$">
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Order deny,allow
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Deny from all
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</FilesMatch>
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13
README.md
13
README.md
@ -11,7 +11,11 @@ This software should make it simple to use pre-rendered map tiles in your own pr
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Download project files and upload it into your web hosting of your choice.
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Open the **"test.html"** file within your browser, your proxy server should display you a simple slippy maps rendering default Open Street Map tiles.
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<p align="center">
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<a href="https://raruto.github.io" rel="nofollow"><img src="https://raruto.github.io/img/proxy-caching.jpg" alt="Proxy Caching" /></a>
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</p>
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Open the **"test.html"** file within your browser, the proxy server should display you a simple slippy map rendering the default Open Street Map tiles.
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Or test directly in your browser with a tile URL such as: http://www.example.com/tiles/15/17024/10792.png
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**NB.** Remeber to check your web server folder permissions: **777** or **755**
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@ -27,6 +31,13 @@ Or test directly in your browser with a tile URL such as: http://www.example.co
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1. **edit the default "config.php"**
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```php
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/**
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* Public App name.
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*
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* @var string
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*/
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$config['user_agent'] = 'Tile-Proxy-PHP/0.1';
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/**
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* Whitelist of supported tile servers
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*
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@ -8,6 +8,13 @@
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* @license https://www.gnu.org/licenses/gpl-3.0.txt GNU/GPLv3
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*/
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/**
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* Public App name.
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*
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* @var string
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*/
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$config['user_agent'] = 'Tile-Proxy-PHP/0.1';
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/**
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* Whitelist of supported tile servers
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*
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285
functions.php
Normal file
285
functions.php
Normal file
@ -0,0 +1,285 @@
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<?php
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/**
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* Map Tile PHP Proxy Functions
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*
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* @package tile-proxy-php
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* @author Raruto <raruto.github.io>
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* @link https://github.com/Raruto/tile-proxy-php
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* @license https://www.gnu.org/licenses/gpl-3.0.txt GNU/GPLv3
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*/
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/**
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* Generate a real tile server url
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*
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* @param string $url eg: 'https://{switch:a,b,c}.tile.openstreetmap.org/{z}/{x}/{y}.png'.
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* @return string eg: 'https://a.tile.openstreetmap.org/0/0/0.png'.
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*/
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function generate_tile_server_url( $url ) {
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global $z, $x, $y;
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$has_matches = preg_match( '/{switch:(.*?)}/', $url, $domains );
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if ( ! $has_matches ) {
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$domains = [ '', '' ];
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}
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$domains = explode( ',', $domains[1] );
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$url = preg_replace( '/{switch:(.*?)}/', '{s}', $url );
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$url = preg_replace( '/{s}/', $domains[ array_rand( $domains ) ], $url );
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$url = preg_replace( '/{z}/', $z, $url );
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$url = preg_replace( '/{x}/', $x, $url );
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$url = preg_replace( '/{y}/', $y, $url );
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return $url;
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}
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/**
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* Convert Map Degrees to Radiant
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*
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* @param float $deg map degrees.
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* @return float
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*/
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function deg_to_rad( $deg ) {
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return $deg * M_PI / 180;
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}
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/**
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* Convert Map Longitude to Tile-X Coordinates
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*
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* @param float $lng map longitude.
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* @param int $zoom map zoom level.
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* @return int
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*/
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function lng_to_tile_x( $lng, $zoom ) {
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return floor( ( ( $lng + 180 ) / 360 ) * pow( 2, $zoom ) );
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}
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/**
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* Convert Map Latitude to Tile-Y Coordinates
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*
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* @param float $lat map latitude.
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* @param int $zoom map zoom level.
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* @return int
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*/
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function lat_to_tile_y( $lat, $zoom ) {
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return floor( ( 1 - log( tan( deg_to_rad( $lat ) ) + 1 / cos( deg_to_rad( $lat ) ) ) / M_PI ) / 2 * pow( 2, $zoom ) );
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}
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/**
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* Finds if a number is within a given range
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*
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* @param float $number number to check.
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* @param float $min left range number.
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* @param float $max right range number.
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* @return bool
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*/
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function in_range( $number, $min, $max ) {
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return $number >= $min && $number <= $max;
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}
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/**
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* Check if cached file is expired
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*
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* @param string $file filename path.
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* @return bool
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*/
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function is_file_expired( $file ) {
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global $ttl;
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return filemtime( $file ) < time() - ( $ttl * 30 );
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}
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/**
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* Check if a remote resource exists
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*
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* @param string $url remote file url.
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* @return bool
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*/
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function remote_file_exists( $url ) {
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$ch = curl_init( $url );
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curl_setopt( $ch, CURLOPT_NOBODY, true );
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curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
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curl_exec( $ch );
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$http_code = curl_getinfo( $ch, CURLINFO_HTTP_CODE );
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curl_close( $ch );
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if ( $http_code == 200 ) {
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return true;
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}
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return false;
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}
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/**
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* Download a remote resource
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*
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* @param string $url remote file url.
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* @param string $folder folder where to download the remote resource.
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* @param string $file file onto download the remote resource.
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* @return void
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*/
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function download_remote_file( $url, $folder, $file ) {
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global $user_agent;
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if ( ! is_dir( $folder ) ) {
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mkdir( $folder, 0755, true );
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}
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$fp = fopen( $file, 'wb' );
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$ch = curl_init( $url );
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curl_setopt( $ch, CURLOPT_FILE, $fp );
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curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
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curl_setopt( $ch, CURLOPT_HEADER, 0 );
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curl_setopt( $ch, CURLOPT_USERAGENT, $user_agent );
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if ( is_localhost() ) {
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curl_setopt( $ch, CURLOPT_SSL_VERIFYHOST, false );
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curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, false );
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}
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curl_exec( $ch );
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curl_close( $ch );
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fflush( $fp ); // need to insert this line for proper output when tile is first requested.
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fclose( $fp );
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}
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/**
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* Output a local file
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*
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* @param string $file file of the local resource.
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* @return void
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||||
*/
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function output_local_file( $file ) {
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print_local_file_headers( $file );
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readfile( $file );
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}
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||||
/**
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||||
* Proxy a remote resource
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||||
*
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* @param string $url remote file url.
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||||
* @return void
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||||
*/
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function proxy_remote_file( $url ) {
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||||
global $user_agent;
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||||
$context = stream_context_create(
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array(
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'http' => array(
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'method' => 'GET',
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||||
'user_agent' => $user_agent,
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||||
),
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||||
)
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||||
);
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$fp = @fopen( $url, 'rb', false, $context );
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||||
if ( ! $fp ) {
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print_404_page();
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return;
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||||
}
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print_remote_file_headers( $url );
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fpassthru( $fp );
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||||
}
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||||
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||||
/**
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||||
* Get remote file headers, similar to: get_headers( $url )
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||||
*
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||||
* @param string $url remote file url.
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||||
* @return array
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||||
* @link https://stackoverflow.com/a/41135574
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||||
*/
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function get_remote_file_headers( $url ) {
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global $user_agent;
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||||
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$headers = [];
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||||
$ch = curl_init();
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curl_setopt( $ch, CURLOPT_URL, $url );
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curl_setopt( $ch, CURLOPT_HEADER, true );
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curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
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curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1 );
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||||
curl_setopt( $ch, CURLOPT_USERAGENT, $user_agent );
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||||
|
||||
if ( is_localhost() ) {
|
||||
curl_setopt( $ch, CURLOPT_SSL_VERIFYHOST, false );
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curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, false );
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||||
}
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|
||||
// this function is called by curl for each header received.
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curl_setopt(
|
||||
$ch, CURLOPT_HEADERFUNCTION,
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function( $curl, $header ) use ( &$headers ) {
|
||||
$headers[] = $header;
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||||
return strlen( $header );
|
||||
}
|
||||
);
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||||
curl_exec( $ch );
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||||
curl_close( $ch );
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||||
|
||||
return $headers;
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||||
}
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||||
|
||||
/**
|
||||
* Check if this a local Server instance.
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||||
*/
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||||
function is_localhost() {
|
||||
$server_addr = isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : null;
|
||||
return in_array( $server_addr, [ '127.0.0.1', '::1' ], true );
|
||||
}
|
||||
|
||||
/**
|
||||
* Print the default apache 404 page
|
||||
*
|
||||
* @return void
|
||||
*/
|
||||
function print_404_page() {
|
||||
header( $_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found' );
|
||||
$request_uri = htmlspecialchars( $_SERVER['REQUEST_URI'] );
|
||||
echo '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">';
|
||||
echo "<html><head><title>404 Not Found</title></head><body><h1>Not Found</h1><p>The requested URL {$request_uri} was not found on this server.</p></body></html>";
|
||||
}
|
||||
|
||||
/**
|
||||
* Send to browser remote file headers
|
||||
*
|
||||
* @param string $url remote file url.
|
||||
* @return void
|
||||
*/
|
||||
function print_remote_file_headers( $url ) {
|
||||
$headers = get_remote_file_headers( $url );
|
||||
print_file_headers( $headers );
|
||||
}
|
||||
|
||||
/**
|
||||
* Send to browser local file headers
|
||||
*
|
||||
* @param string $file local file.
|
||||
* @return void
|
||||
*/
|
||||
function print_local_file_headers( $file ) {
|
||||
global $ttl;
|
||||
$headers = array(
|
||||
'Expires:' => gmdate( 'D, d M Y H:i:s', time() + $ttl * 60 ) . ' GMT',
|
||||
'Last-Modified:' => gmdate( 'D, d M Y H:i:s', filemtime( $file ) ) . ' GMT',
|
||||
'Cache-Control:' => 'public, max-age=' . ( $ttl * 60 ), // for MSIE 5.
|
||||
'Content-Type:' => 'image/png',
|
||||
);
|
||||
print_file_headers( $headers );
|
||||
}
|
||||
|
||||
/**
|
||||
* Send to browser file headers filtering it with the previously array in config file
|
||||
*
|
||||
* @param array $file_headers eg: array( 'Content-Type:' => 'image/png' ) or array( 'Access-Control-Allow-Origin: *' ).
|
||||
*
|
||||
* @return void
|
||||
*/
|
||||
function print_file_headers( &$file_headers ) {
|
||||
global $headers;
|
||||
// send headers only if not previously defined in config file.
|
||||
foreach ( $file_headers as $header => $value ) {
|
||||
if ( is_string( $header ) ) {
|
||||
header( $header . ' ' . $value );
|
||||
} else {
|
||||
header( $value );
|
||||
}
|
||||
}
|
||||
// send all remaing default headers defined in config file.
|
||||
foreach ( $headers as $header => $value ) {
|
||||
header_remove( rtrim( $header, ':' ) );
|
||||
header( $header . ' ' . $value );
|
||||
}
|
||||
}
|
||||
258
index.php
258
index.php
@ -15,19 +15,20 @@
|
||||
* @license https://www.gnu.org/licenses/gpl-3.0.txt GNU/GPLv3
|
||||
*/
|
||||
|
||||
// TODO: code refactoring ( wrap it within a dedicated class.. )
|
||||
|
||||
// User configs.
|
||||
require_once 'config.php';
|
||||
// Tile functions.
|
||||
require_once 'functions.php';
|
||||
|
||||
// Default configs.
|
||||
$servers = @$config['servers'] ?: array(
|
||||
$user_agent = @$config['user_agent'] ?: 'Tile-Proxy-PHP/0.1';
|
||||
$servers = @$config['servers'] ?: array(
|
||||
'osm' => 'https://{switch:a,b,c}.tile.openstreetmap.org/{z}/{x}/{y}.png',
|
||||
'otm' => 'https://{switch:a,b,c}.tile.opentopomap.org/{z}/{x}/{y}.png',
|
||||
);
|
||||
$bbox = @$config['bbox'] ?: '-180,-90,180,90';
|
||||
$ttl = @$config['ttl'] ?: 86400;
|
||||
$headers = array_change_key_case(
|
||||
$bbox = @$config['bbox'] ?: '-180,-90,180,90';
|
||||
$ttl = @$config['ttl'] ?: 86400;
|
||||
$headers = array_change_key_case(
|
||||
@$config['headers'] ?: array(
|
||||
'Access-Control-Allow-Origin:' => '*',
|
||||
), CASE_LOWER
|
||||
@ -81,248 +82,3 @@ if ( ! is_file( $file ) || ( is_file_expired( $file ) && remote_file_exists( $ur
|
||||
// Send to browser any previously cached tile.
|
||||
output_local_file( $file );
|
||||
exit;
|
||||
|
||||
/* // functions ///////////////////////////////////////////////////////////// */
|
||||
|
||||
/**
|
||||
* Generate a real tile server url
|
||||
*
|
||||
* @param string $url eg: 'https://{switch:a,b,c}.tile.openstreetmap.org/{z}/{x}/{y}.png'.
|
||||
* @return string eg: 'https://a.tile.openstreetmap.org/0/0/0.png'.
|
||||
*/
|
||||
function generate_tile_server_url( $url ) {
|
||||
global $z, $x, $y;
|
||||
$has_matches = preg_match( '/{switch:(.*?)}/', $url, $domains );
|
||||
if ( ! $has_matches ) {
|
||||
$domains = [ '', '' ];
|
||||
}
|
||||
$domains = explode( ',', $domains[1] );
|
||||
$url = preg_replace( '/{switch:(.*?)}/', '{s}', $url );
|
||||
$url = preg_replace( '/{s}/', $domains[ array_rand( $domains ) ], $url );
|
||||
$url = preg_replace( '/{z}/', $z, $url );
|
||||
$url = preg_replace( '/{x}/', $x, $url );
|
||||
$url = preg_replace( '/{y}/', $y, $url );
|
||||
return $url;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert Map Degrees to Radiant
|
||||
*
|
||||
* @param float $deg map degrees.
|
||||
* @return float
|
||||
*/
|
||||
function deg_to_rad( $deg ) {
|
||||
return $deg * M_PI / 180;
|
||||
}
|
||||
/**
|
||||
* Convert Map Longitude to Tile-X Coordinates
|
||||
*
|
||||
* @param float $lng map longitude.
|
||||
* @param int $zoom map zoom level.
|
||||
* @return int
|
||||
*/
|
||||
function lng_to_tile_x( $lng, $zoom ) {
|
||||
return floor( ( ( $lng + 180 ) / 360 ) * pow( 2, $zoom ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert Map Latitude to Tile-Y Coordinates
|
||||
*
|
||||
* @param float $lat map latitude.
|
||||
* @param int $zoom map zoom level.
|
||||
* @return int
|
||||
*/
|
||||
function lat_to_tile_y( $lat, $zoom ) {
|
||||
return floor( ( 1 - log( tan( deg_to_rad( $lat ) ) + 1 / cos( deg_to_rad( $lat ) ) ) / M_PI ) / 2 * pow( 2, $zoom ) );
|
||||
}
|
||||
/**
|
||||
* Finds if a number is within a given range
|
||||
*
|
||||
* @param float $number number to check.
|
||||
* @param float $min left range number.
|
||||
* @param float $max right range number.
|
||||
* @return bool
|
||||
*/
|
||||
function in_range( $number, $min, $max ) {
|
||||
return $number >= $min && $number <= $max;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if cached file is expired
|
||||
*
|
||||
* @param string $file filename path.
|
||||
* @return bool
|
||||
*/
|
||||
function is_file_expired( $file ) {
|
||||
global $ttl;
|
||||
return filemtime( $file ) < time() - ( $ttl * 30 );
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if a remote resource exists
|
||||
*
|
||||
* @param string $url remote file url.
|
||||
* @return bool
|
||||
*/
|
||||
function remote_file_exists( $url ) {
|
||||
$ch = curl_init( $url );
|
||||
curl_setopt( $ch, CURLOPT_NOBODY, true );
|
||||
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
|
||||
curl_exec( $ch );
|
||||
$http_code = curl_getinfo( $ch, CURLINFO_HTTP_CODE );
|
||||
curl_close( $ch );
|
||||
if ( $http_code == 200 ) {
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Download a remote resource
|
||||
*
|
||||
* @param string $url remote file url.
|
||||
* @param string $folder folder where to download the remote resource.
|
||||
* @param string $file file onto download the remote resource.
|
||||
* @return void
|
||||
*/
|
||||
function download_remote_file( $url, $folder, $file ) {
|
||||
if ( ! is_dir( $folder ) ) {
|
||||
mkdir( $folder, 0755, true );
|
||||
}
|
||||
|
||||
$fp = fopen( $file, 'wb' );
|
||||
|
||||
$ch = curl_init( $url );
|
||||
curl_setopt( $ch, CURLOPT_FILE, $fp );
|
||||
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
|
||||
curl_setopt( $ch, CURLOPT_HEADER, 0 );
|
||||
curl_exec( $ch );
|
||||
curl_close( $ch );
|
||||
|
||||
fflush( $fp ); // need to insert this line for proper output when tile is first requested.
|
||||
fclose( $fp );
|
||||
}
|
||||
|
||||
/**
|
||||
* Output a local file
|
||||
*
|
||||
* @param string $file file of the local resource.
|
||||
* @return void
|
||||
*/
|
||||
function output_local_file( $file ) {
|
||||
print_local_file_headers( $file );
|
||||
readfile( $file );
|
||||
}
|
||||
|
||||
/**
|
||||
* Proxy a remote resource
|
||||
*
|
||||
* @param string $url remote file url.
|
||||
* @return void
|
||||
*/
|
||||
function proxy_remote_file( $url ) {
|
||||
$fp = @fopen( $url, 'rb' );
|
||||
if ( ! $fp ) {
|
||||
print_404_page();
|
||||
return;
|
||||
}
|
||||
print_remote_file_headers( $url );
|
||||
fpassthru( $fp );
|
||||
}
|
||||
|
||||
/**
|
||||
* Get remote file headers, similar to: get_headers( $url )
|
||||
*
|
||||
* @param string $url remote file url.
|
||||
* @return array
|
||||
* @link https://stackoverflow.com/a/41135574
|
||||
*/
|
||||
function get_remote_file_headers( $url ) {
|
||||
$headers = [];
|
||||
$ch = curl_init();
|
||||
|
||||
curl_setopt( $ch, CURLOPT_URL, $url );
|
||||
curl_setopt( $ch, CURLOPT_HEADER, true );
|
||||
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
|
||||
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1 );
|
||||
|
||||
// this function is called by curl for each header received.
|
||||
curl_setopt(
|
||||
$ch, CURLOPT_HEADERFUNCTION,
|
||||
function( $curl, $header ) use ( &$headers ) {
|
||||
$headers[] = $header;
|
||||
return strlen( $header );
|
||||
}
|
||||
);
|
||||
curl_exec( $ch );
|
||||
curl_close( $ch );
|
||||
|
||||
return $headers;
|
||||
}
|
||||
|
||||
/**
|
||||
* Print the default apache 404 page
|
||||
*
|
||||
* @return void
|
||||
*/
|
||||
function print_404_page() {
|
||||
header( $_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found' );
|
||||
$request_uri = htmlspecialchars( $_SERVER['REQUEST_URI'] );
|
||||
echo '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">';
|
||||
echo "<html><head><title>404 Not Found</title></head><body><h1>Not Found</h1><p>The requested URL {$request_uri} was not found on this server.</p></body></html>";
|
||||
}
|
||||
|
||||
/**
|
||||
* Send to browser remote file headers
|
||||
*
|
||||
* @param string $url remote file url.
|
||||
* @return void
|
||||
*/
|
||||
function print_remote_file_headers( $url ) {
|
||||
$headers = get_remote_file_headers( $url );
|
||||
print_file_headers( $headers );
|
||||
}
|
||||
|
||||
/**
|
||||
* Send to browser local file headers
|
||||
*
|
||||
* @param string $file local file.
|
||||
* @return void
|
||||
*/
|
||||
function print_local_file_headers( $file ) {
|
||||
global $ttl;
|
||||
$exp_gmt = gmdate( 'D, d M Y H:i:s', time() + $ttl * 60 ) . ' GMT';
|
||||
$mod_gmt = gmdate( 'D, d M Y H:i:s', filemtime( $file ) ) . ' GMT';
|
||||
$max_age = $ttl * 60;
|
||||
$headers = array(
|
||||
'Expires:' => $exp_gmt,
|
||||
'Last-Modified:' => $mod_gmt,
|
||||
'Cache-Control:' => 'public, max-age=' . $max_age, // for MSIE 5.
|
||||
'Content-Type:' => 'image/png',
|
||||
);
|
||||
print_file_headers( $headers );
|
||||
}
|
||||
|
||||
/**
|
||||
* Send to browser file headers filtering it with the previously array in config file
|
||||
*
|
||||
* @param array $file_headers eg: array( 'Content-Type:' => 'image/png' ) or array( 'Access-Control-Allow-Origin: *' ).
|
||||
*
|
||||
* @return void
|
||||
*/
|
||||
function print_file_headers( &$file_headers ) {
|
||||
global $headers;
|
||||
// send headers only if not previously defined in config file.
|
||||
foreach ( $file_headers as $header => $value ) {
|
||||
if ( is_string( $header ) ) {
|
||||
header( $header . ' ' . $value );
|
||||
} else {
|
||||
header( $value );
|
||||
}
|
||||
}
|
||||
// send all remaing default headers defined in config file.
|
||||
foreach ( $headers as $header => $value ) {
|
||||
header_remove( rtrim( $header, ':' ) );
|
||||
header( $header . ' ' . $value );
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user