]> git.openstreetmap.org Git - nominatim.git/blobdiff - lib/lib.php
if doing structured query limit the types of osm place returned
[nominatim.git] / lib / lib.php
index 39e6da407d5f761c48c00e481182920f1f23399f..91fe21b2c79626b23f087387a1dfb95d0c2bca16 100644 (file)
@@ -7,7 +7,7 @@
                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 report the bug in the <a href="http://trac.openstreetmap.org">OSM bug database</a>. Please include the error message above an the URL you used.</p>';
+               echo '<p>Feel free to report the bug in the <a href="http://trac.openstreetmap.org">OSM bug database</a>. Please include the error message above and the URL you used.</p>';
                if (CONST_Debug)
                {
                        echo "<hr><h2>Debugging Information</h2><br>";
 
        }
 
+       function userError($sError) 
+       {
+               header('HTTP/1.0 400 Bad Request');
+               header('Content-type: text/html; charset=utf-8');
+               echo "<html><body><h1>Bad Request</h1>";
+               echo '<p>Nominatim has encountered an error with your request.</p>';
+               echo "<p><b>Details:</b> ".$sError,"</p>";
+               echo '<p>If you feel this error is incorrect feel free to report the bug in the <a href="http://trac.openstreetmap.org">OSM bug database</a>. Please include the error message above and the URL you used.</p>';
+               echo "\n</body></html>\n";
+               exit;
+
+       }
+
        function fail($sError, $sUserError = false)
        {
                if (!$sUserError) $sUserError = $sError;
@@ -47,7 +60,7 @@
        {
                $sLoadAverage = file_get_contents('/proc/loadavg');
                 $aLoadAverage = explode(' ',$sLoadAverage);
-               return (int)$aLoadAverage[0];
+               return (float)$aLoadAverage[0];
        }
 
        function getProcessorCount()
                return ($a['foundorder'] < $b['foundorder']?-1:1);
        }
 
-       function getPrefferedLangauges()
+       function getPreferredLanguages()
        {
                // If we have been provided the value in $_GET it overrides browser value
                if (isset($_GET['accept-language']) && $_GET['accept-language'])
                return false;
 
                /*
-                       $fTotalFac is a suprisingly good indicator of accuracy
+                       $fTotalFac is a surprisingly good indicator of accuracy
                        $iZoom = 18 + round(log($fTotalFac,32));
                        $iZoom = max(13,min(18,$iZoom));
                */
        }
        
        
-        function javascript_isarray($xVal)
-        {
-                if (!is_array($xVal)) return false;
-                for($i = 0; $i < sizeof($xVal); $i++)
-                {
-                        if (!array_key_exists($i, $xVal)) return false;
-                }
-                return true;
-        }
 
-        function javascript_renderData($xVal, $bForceHash = false)
-        {
-                if (is_array($xVal))
-                {
-                        $aVals = array();
-                        if (javascript_isarray($xVal) && !$bForceHash)
-                        {
-                                foreach($xVal as $sKey => $xData)
-                                {
-                                        $aVals[] = javascript_renderData($xData);
-                                }
-                                return '['.join(',',$aVals).']';
-                        }
-                        else
-                        {
-                                foreach($xVal as $sKey => $xData)
-                                {
-                                        $aVals[] = '"'.addslashes($sKey).'"'.':'.javascript_renderData($xData);
-                                }
-                                return '{'.join(',',$aVals).'}';
-                        }
-                }
-                else
-                {
-                        if (is_bool($xVal)) return $xVal?'true':'false';
-//                     if (is_numeric($xVal)) return $xVal;
-                        return '"'.str_replace('>','\\>',str_replace(array("\n","\r"),'\\n',str_replace(array("\n\r","\r\n"),'\\n',str_replace('"','\\"',$xVal)))).'"';
-                }
-        }
+    function javascript_renderData($xVal)
+    {
+        header("Access-Control-Allow-Origin: *");
+
+        $jsonout = json_encode($xVal);
+
+               if( ! isset($_GET['json_callback'])) {
+                       header("Content-Type: application/json; charset=UTF-8");
+                       echo $jsonout;
+               } else {
+                       if (preg_match('/^[$_\p{L}][$_\p{L}\p{Nd}.[\]]*$/u',$_GET['json_callback'])) {
+                               header("Content-Type: application/javascript; charset=UTF-8");
+                               echo $_GET['json_callback'].'('.$jsonout.')';
+                       } else {
+                               header('HTTP/1.0 400 Bad Request');
+                       }
+               }
+    }
 
        function _debugDumpGroupedSearches($aData, $aTokens)
        {
 
                return $iPlaceID;
        }
+
+        function loadStructuredAddressElement(&$aStructuredQuery, &$iMinAddressRank, &$iMaxAddressRank, $aParams, $sKey, $iNewMinAddressRank, $iNewMaxAddressRank)
+        {
+                if (!isset($_GET[$sKey])) return false;
+                $sValue = trim($_GET[$sKey]);
+                if (!$sValue) return false;
+                $aStructuredQuery[$sKey] = $sValue;
+                if ($iMinAddressRank == 0 && $iMaxAddressRank == 30) {
+                        $iMinAddressRank = $iNewMinAddressRank;
+                        $iMaxAddressRank = $iNewMaxAddressRank;
+                }
+                return true;
+        }
+
+       function getBucketMemcache()
+       {
+               static $m;
+
+               if (!CONST_ConnectionBucket_MemcacheServerAddress) return null;
+               if (!isset($m))
+               {
+                       $m = new Memcached();
+                       $m->addServer(CONST_ConnectionBucket_MemcacheServerAddress, CONST_ConnectionBucket_MemcacheServerPort);
+               }
+               return $m;
+       }
+
+       function doBucket($asKey, $iRequestCost, $iLeakPerSecond, $iThreshold)
+       {
+               $m = getBucketMemcache();
+               if (!$m) return 0;
+
+               $iMaxVal = 0;
+               $t = time();
+
+               foreach($asKey as $sKey)
+               {
+                       $aCurrentBlock = $m->get($sKey);
+                       if (!$aCurrentBlock)
+                       {
+                               $aCurrentBlock = array($iRequestCost, $t);
+                       }
+                       else
+                       {
+                               // add RequestCost
+                               // remove leak * the time since the last request 
+                               $aCurrentBlock[0] += $iRequestCost - ($t - $aCurrentBlock[1])*$iLeakPerSecond;
+                               $aCurrentBlock[1] = $t;
+                       }
+
+                       if ($aCurrentBlock[0] <= 0)
+                       {
+                               $m->delete($sKey);
+                       }
+                       else
+                       {
+                               // If we have hit the threshold stop and record this to the block list
+                               if ($aCurrentBlock[0] >= $iThreshold)
+                               {
+                                       $aCurrentBlock[0] = $iThreshold;
+
+                                       // Make up to 10 attempts to record this to memcache (with locking to prevent conflicts)
+                                       $i = 10;
+                                       for($i = 0; $i < 10; $i++)
+                                       {
+                                               $aBlockedList = $m->get('blockedList', null, $hCasToken);
+                                               if (!$aBlockedList)
+                                               {
+                                                       $aBlockedList = array();
+                                                       $m->add('blockedList', $aBlockedList);
+                                                       $aBlockedList = $m->get('blockedList', null, $hCasToken);
+                                               }
+                                               if (!isset($aBlockedList[$sKey]))
+                                               {
+                                                       $aBlockedList[$sKey] = array(1, $t);
+                                               }
+                                               else
+                                               {
+                                                       $aBlockedList[$sKey][0]++;
+                                                       $aBlockedList[$sKey][1] = $t;
+                                               }
+                                               $x = $m->cas($hCasToken, 'blockedList', $aBlockedList);
+                                               if ($x) break;
+                                       }
+                               }
+                               // Only keep in memcache until the time it would have expired (to avoid clutering memcache)
+                               $m->set($sKey, $aCurrentBlock, $t + 1 + $aCurrentBlock[0]/$iLeakPerSecond);
+                       }
+
+                       // Bucket result in the largest bucket we find
+                       $iMaxVal = max($iMaxVal, $aCurrentBlock[0]);
+               }
+
+               return $iMaxVal;
+        }
+
+       function byLastBlockTime($a, $b)
+       {
+               if ($a['lastBlockTimestamp'] == $b['lastBlockTimestamp'])
+               {
+                       return 0;
+               }
+               return ($a['lastBlockTimestamp'] > $b['lastBlockTimestamp']) ? -1 : 1;
+       }
+
+       function getBucketBlocks()
+       {
+               $m = getBucketMemcache();
+               if (!$m) return null;
+               $t = time();
+               $aBlockedList = $m->get('blockedList', null, $hCasToken);
+               if (!$aBlockedList) $aBlockedList = array();
+               foreach($aBlockedList as $sKey => $aDetails)
+               {
+                       $aCurrentBlock = $m->get($sKey);
+                       if (!$aCurrentBlock) $aCurrentBlock = array(0, $t);
+                       $iCurrentBucketSize = max(0, $aCurrentBlock[0] - ($t - $aCurrentBlock[1])*CONST_ConnectionBucket_LeakRate);
+                       $aBlockedList[$sKey] = array(
+                               'totalBlocks' => $aDetails[0],
+                               'lastBlockTimestamp' => $aDetails[1],
+                               'currentBucketSize' => $iCurrentBucketSize,
+                               'lastRequestBlocked' => $aCurrentBlock[0] >= CONST_ConnectionBucket_BlockLimit,
+                               'currentlyBlocked' => $iCurrentBucketSize + (CONST_ConnectionBucket_Cost_Reverse) >= CONST_ConnectionBucket_BlockLimit,
+                               );
+               }
+               uasort($aBlockedList, 'byLastBlockTime');
+               return $aBlockedList;
+       }
+
+       function clearBucketBlocks()
+       {
+               $m = getBucketMemcache();
+               if (!$m) return false;
+               $m->delete('blockedList');
+               return true;
+       }