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factor out parameter parsing into its own class
[nominatim.git] / lib / init-website.php
diff --git a/lib/init-website.php b/lib/init-website.php
index 94dba6f4a15599675da89c7e484a334692035b39..9d66a9ac122aaf5b97d8f54c2dcb994481eb0237 100644 (file)
--- a/lib/init-website.php
+++ b/lib/init-website.php
@@ -1,61 +1,104 @@
 <?php
        require_once('init.php');
 <?php
        require_once('init.php');
+       require_once('ParameterParser.php');
 
 
-       if (CONST_NoAccessControl)
+/***************************************************************************
+ *
+ * Error handling functions
+ *
+ */
+       function chksql($oSql, $sMsg = "Database request failed")
        {
        {
-               header("Access-Control-Allow-Origin: *");
-               header("Access-Control-Allow-Methods: OPTIONS,GET");
-               header("Access-Control-Allow-Headers: ".$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']);
-       }
-       if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') exit;
-
-       if (CONST_ClosedForIndexing && strpos(CONST_ClosedForIndexingExceptionIPs, ','.$_SERVER["REMOTE_ADDR"].',') === false)
-       {
-               echo "Closed for re-indexing...";
-               exit;
-       }
+               if (!PEAR::isError($oSql)) return $oSql;
 
 
-       $aBucketKeys = array();
+               header('HTTP/1.0 500 Internal Server Error');
+               header('Content-type: text/html; charset=utf-8');
 
 
-       if (isset($_SERVER["HTTP_REFERER"])) $aBucketKeys[] = str_replace('www.','',strtolower(parse_url($_SERVER["HTTP_REFERER"], PHP_URL_HOST)));
-       if (isset($_SERVER["REMOTE_ADDR"])) $aBucketKeys[] = $_SERVER["REMOTE_ADDR"];
-       if (isset($_GET["email"])) $aBucketKeys[] = $_GET["email"];
+               $sSqlError = $oSql->getMessage();
 
 
-       $fBucketVal = doBucket($aBucketKeys, 
-                       (defined('CONST_ConnectionBucket_PageType')?constant('CONST_ConnectionBucket_Cost_'.CONST_ConnectionBucket_PageType):1) + user_busy_cost(),
-                       CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
+               echo <<<INTERNALFAIL
+       <html>
+         <head><title>Internal Server Error</title></head>
+         <body>
+               <h1>Internal Server Error</h1>
+               <p>Nominatim has encountered an internal error while accessing the database.
+                  This may happen because the database is broken or because of a bug in
+                  the software. If you think it is a bug, feel free to report
+                  it over on <a href="https://github.com/twain47/Nominatim/issues">
+                  Github</a>. Please include the URL that caused the problem and the
+                  complete error details below.</p>
+               <p><b>Message:</b> $sMsg</p>
+               <p><b>SQL Error:</b> $sSqlError</p>
+               <p><b>Details:</b> <pre>
+INTERNALFAIL;
 
 
-       if ($fBucketVal > CONST_ConnectionBucket_WaitLimit && $fBucketVal < CONST_ConnectionBucket_BlockLimit)
-       {
-               $m = getBucketMemcache();
-               $iCurrentSleeping = $m->increment('sleepCounter');
-               if (false === $iCurrentSleeping)
+               if (CONST_Debug)
                {
                {
-                       $m->add('sleepCounter', 0);
-                       $iCurrentSleeping = $m->increment('sleepCounter');
+                       var_dump($oSql);
                }
                }
-               if ($iCurrentSleeping >= CONST_ConnectionBucket_MaxSleeping || isBucketSleeping($aBucketKeys))
+               else
                {
                {
-                       // Too many threads sleeping already.  This becomes a hard block.
-                       $fBucketVal = doBucket($aBucketKeys, CONST_ConnectionBucket_BlockLimit, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
+                       echo "<pre>\n".$oSql->getUserInfo()."</pre>";
                }
                }
-               else
+
+               echo "</pre></p></body></html>";
+               exit;
+       }
+
+       function failInternalError($sError, $sSQL = false, $vDumpVar = false)
+       {
+               header('HTTP/1.0 500 Internal Server Error');
+               header('Content-type: text/html; charset=utf-8');
+               echo "<html><body><h1>Internal Server Error</h1>";
+               echo '<p>Nominatim has encountered an internal error while processing your request. This is most likely because of a bug in the software.</p>';
+               echo "<p><b>Details:</b> ".$sError,"</p>";
+               echo '<p>Feel free to file an issue on <a href="https://github.com/twain47/Nominatim/issues">Github</a>. Please include the error message above and the URL you used.</p>';
+               if (CONST_Debug)
                {
                {
-                       setBucketSleeping($aBucketKeys, true);
-                       sleep(($fBucketVal - CONST_ConnectionBucket_WaitLimit)/CONST_ConnectionBucket_LeakRate);
-                       $fBucketVal = doBucket($aBucketKeys, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
-                       setBucketSleeping($aBucketKeys, false);
+                       echo "<hr><h2>Debugging Information</h2><br>";
+                       if ($sSQL)
+                       {
+                               echo "<h3>SQL query</h3><code>".$sSQL."</code>";
+                       }
+                       if ($vDumpVar)
+                       {
+                               echo "<h3>Result</h3> <code>";
+                               var_dump($vDumpVar);
+                               echo "</code>";
+                       }
                }
                }
-               $m->decrement('sleepCounter');
+               echo "\n</body></html>\n";
+               exit;
        }
 
        }
 
-       if (strpos(CONST_BlockedIPs, ','.$_SERVER["REMOTE_ADDR"].',') !== false || $fBucketVal >= CONST_ConnectionBucket_BlockLimit)
+
+       function userError($sError)
        {
        {
-               echo "Your IP has been blocked. \n";
-               echo "Please create a nominatim trac ticket (http://trac.openstreetmap.org/newticket?component=nominatim) to request this to be removed. \n";
-               echo "Information on the Nominatim usage policy can be found here: http://wiki.openstreetmap.org/wiki/Nominatim#Usage_Policy \n";
+               header('HTTP/1.0 400 Bad Request');
+               header('Content-type: text/html; charset=utf-8');
+               echo "<html><body><h1>Bad Request</h1>";
+               echo '<p>Nominatim has encountered an error with your request.</p>';
+               echo "<p><b>Details:</b> ".$sError."</p>";
+               echo '<p>If you feel this error is incorrect feel file an issue on <a href="https://github.com/twain47/Nominatim/issues">Github</a>. Please include the error message above and the URL you used.</p>';
+               echo "\n</body></html>\n";
                exit;
        }
 
                exit;
        }
 
-       header('Content-type: text/html; charset=utf-8');
+
+/***************************************************************************
+ * 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 ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') exit;
+
+       if (CONST_Debug) header('Content-type: text/html; charset=utf-8');
 
 
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