add link for OpenSearch description

[nominatim.git] / lib / init-website.php
diff --git a/lib/init-website.php b/lib/init-website.php

index 6db2ac374d995837b2aac2dcb9861ec6922945b6..23c15ba81b3b3dc0253c0d26fc88cc2a282b8dc8 100644 (file)
--- a/lib/init-website.php
+++ b/lib/init-website.php
@@ -1,34 +1,105 @@
  <?php
  <?php
-    require_once('init.php');
-
-    header('Content-type: text/html; charset=utf-8');
-
-    // check blocks in place for external servers
-    if (strpos($_SERVER["REMOTE_ADDR"],'193.63.75.') !== 0 &&
-        strpos(CONST_WhitelistedIPs, ','.$_SERVER["REMOTE_ADDR"].',') === false)
-    {
-
-        if (strpos(CONST_BlockedIPs, ','.$_SERVER["REMOTE_ADDR"].',') !== false)
-        {
-            header('HTTP/1.0 403 Forbidden');
-            header('Content-type: text/html; charset=utf-8');
-            echo "<html><body><h1>Access blocked</h1>";
-            echo "Your IP has been blocked for overusing OpenStreetMap's volunteer-run servers.<br> \n";
-            echo 'Please consult the <a href="http://wiki.openstreetmap.org/wiki/Nominatim_usage_policy">Nominatim usage policy</a> for more information.';
-            echo "\n</body></html>\n";
-            exit;
-        }
-
-        $sTempBlockedIP = file_get_contents(CONST_IPBanFile);
-        if (preg_match('/\b'.$_SERVER["REMOTE_ADDR"].'\b/', $sTempBlockedIP))
-        {
-            header('HTTP/1.0 503 Service Temporarily Unavailable');
-            header('Content-type: text/html; charset=utf-8');
-            echo "<html><body><h1>Access blocked</h1>";
-            echo "Your IP has been blocked temporarily for overusing OpenStreetMap's volunteer-run servers. This ban will be lifted automatically in a while. To avoid further blocks, please read the<br> \n";
-            echo '<a href="http://wiki.openstreetmap.org/wiki/Nominatim_usage_policy">Nominatim usage policy</a> carefully before you continue to use this service.';
-            echo "\n</body></html>\n";
-            exit;
-        }
  
  
+require_once('init.php');
+require_once('ParameterParser.php');
+require_once(CONST_Debug ? 'DebugHtml.php' : 'DebugNone.php');
+
+/***************************************************************************
+ *
+ * Error handling functions
+ *
+ */
+
+function userError($sMsg)
+{
+    throw new Exception($sMsg, 400);
+}
+
+
+function exception_handler_html($exception)
+{
+    http_response_code($exception->getCode());
+    header('Content-type: text/html; charset=UTF-8');
+    include(CONST_BasePath.'/lib/template/error-html.php');
+    exit();
+}
+
+function exception_handler_json($exception)
+{
+    http_response_code($exception->getCode());
+    header('Content-type: application/json; charset=utf-8');
+    include(CONST_BasePath.'/lib/template/error-json.php');
+    exit();
+}
+
+function exception_handler_xml($exception)
+{
+    http_response_code($exception->getCode());
+    header('Content-type: text/xml; charset=utf-8');
+    echo '<?xml version="1.0" encoding="UTF-8" ?>'."\n";
+    include(CONST_BasePath.'/lib/template/error-xml.php');
+    exit();
+}
+
+function shutdown_exception_handler_html()
+{
+    $error = error_get_last();
+    if ($error !== null && $error['type'] === E_ERROR) {
+        exception_handler_html(new Exception($error['message'], 500));
+    }
+}
+
+function shutdown_exception_handler_xml()
+{
+    $error = error_get_last();
+    if ($error !== null && $error['type'] === E_ERROR) {
+        exception_handler_xml(new Exception($error['message'], 500));
+    }
+}
+
+function shutdown_exception_handler_json()
+{
+    $error = error_get_last();
+    if ($error !== null && $error['type'] === E_ERROR) {
+        exception_handler_json(new Exception($error['message'], 500));
+    }
+}
+
+
+function set_exception_handler_by_format($sFormat = null)
+{
+    // Multiple calls to register_shutdown_function will cause multiple callbacks
+    // to be executed, we only want the last executed. Thus we don't want to register
+    // one by default without an explicit $sFormat set.
+
+    if (!isset($sFormat)) {
+        set_exception_handler('exception_handler_html');
+    } elseif ($sFormat == 'html') {
+        set_exception_handler('exception_handler_html');
+        register_shutdown_function('shutdown_exception_handler_html');
+    } elseif ($sFormat == 'xml') {
+        set_exception_handler('exception_handler_xml');
+        register_shutdown_function('shutdown_exception_handler_xml');
+    } else {
+        set_exception_handler('exception_handler_json');
+        register_shutdown_function('shutdown_exception_handler_json');
      }
      }
+}
+// set a default
+set_exception_handler_by_format();
+
+
+/***************************************************************************
+ * HTTP Reply header setup
+ */
+
+if (CONST_NoAccessControl) {
+    header('Access-Control-Allow-Origin: *');
+    header('Access-Control-Allow-Methods: OPTIONS,GET');
+    if (!empty($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS'])) {
+        header('Access-Control-Allow-Headers: '.$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']);
+    }
+}
+if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] == 'OPTIONS') exit;
+
+if (CONST_Debug) header('Content-type: text/html; charset=utf-8');