website/reverse.php

   1 <?php
   2         require_once(dirname(dirname(__FILE__)).'/lib/init-website.php');
   3         require_once(CONST_BasePath.'/lib/log.php');
   4
   5         $oDB =& getDB();
   6
   7         if (strpos(CONST_BulkUserIPs, ','.$_SERVER["REMOTE_ADDR"].',') !== false)
   8         {
   9                 $fLoadAvg = getLoadAverage();
  10                 if ($fLoadAvg > 2) sleep(60);
  11                 if ($fLoadAvg > 4) sleep(120);
  12                 if ($fLoadAvg > 6)
  13                 {
  14                         echo "Bulk User: Temporary block due to high server load\n";
  15                         exit;
  16                 }
  17         }
  18
  19         ini_set('memory_limit', '200M');
  20
  21         // Format for output
  22         $sOutputFormat = 'xml';
  23         if (isset($_GET['format']) && ($_GET['format'] == 'xml' || $_GET['format'] == 'json' || $_GET['format'] == 'jsonv2'))
  24         {
  25                 $sOutputFormat = $_GET['format'];
  26         }
  27
  28         // Show address breakdown
  29         $bShowAddressDetails = true;
  30         if (isset($_GET['addressdetails'])) $bShowAddressDetails = (bool)$_GET['addressdetails'];
  31
  32         // Prefered language
  33         $aLangPrefOrder = getPrefferedLangauges();
  34         $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$aLangPrefOrder))."]";
  35
  36         $hLog = logStart($oDB, 'reverse', $_SERVER['QUERY_STRING'], $aLangPrefOrder);
  37
  38         if (isset($_GET['osm_type']) && isset($_GET['osm_id']) && (int)$_GET['osm_id'] && ($_GET['osm_type'] == 'N' || $_GET['osm_type'] == 'W' || $_GET['osm_type'] == 'R'))
  39         {
  40                 $iPlaceID = $oDB->getOne("select place_id from placex where osm_type = '".$_GET['osm_type']."' and osm_id = ".(int)$_GET['osm_id']." order by type = 'postcode' asc");
  41                 if (!$iPlaceID) $sError = 'OSM ID Not Found';
  42         }
  43         else
  44         {
  45                 // Location to look up
  46                 $fLat = (float)$_GET['lat'];
  47                 $fLon = (float)$_GET['lon'];
  48                 $sPointSQL = "ST_SetSRID(ST_Point($fLon,$fLat),4326)";
  49
  50                 // Zoom to rank, this could probably be calculated but a lookup gives fine control
  51                 $aZoomRank = array(
  52                         0 => 2, // Continent / Sea
  53                         1 => 2,
  54                         2 => 2,
  55                         3 => 4, // Country
  56                         4 => 4,
  57                         5 => 8, // State
  58                         6 => 10, // Region
  59                         7 => 10,
  60                         8 => 12, // County
  61                         9 => 12,
  62                         10 => 17, // City
  63                         11 => 17,
  64                         12 => 18, // Town / Village
  65                         13 => 18,
  66                         14 => 22, // Suburb
  67                         15 => 22,
  68                         16 => 26, // Street, TODO: major street?
  69                         17 => 26,
  70                         18 => 30, // or >, Building
  71                         19 => 30, // or >, Building
  72                         );
  73                 $iMaxRank = isset($aZoomRank[$_GET['zoom']])?$aZoomRank[$_GET['zoom']]:28;
  74
  75                 // Find the nearest point
  76                 $fSearchDiam = 0.0001;
  77                 $iPlaceID = null;
  78                 $aArea = false;
  79                 $fMaxAreaDistance = 1;
  80                 while(!$iPlaceID && $fSearchDiam < $fMaxAreaDistance)
  81                 {
  82                         $fSearchDiam = $fSearchDiam * 2;
  83
  84                         // If we have to expand the search area by a large amount then we need a larger feature
  85                         // then there is a limit to how small the feature should be
  86                         if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4;
  87                         if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8;
  88                         if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10;
  89                         if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12;
  90                         if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17;
  91                         if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18;
  92                         if ($fSearchDiam > 0.008 && $iMaxRank > 22) $iMaxRank = 22;
  93                         if ($fSearchDiam > 0.001 && $iMaxRank > 26) $iMaxRank = 26;
  94
  95                         $sSQL = 'select place_id,parent_place_id from placex';
  96                         $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
  97                         $sSQL .= ' and rank_search != 28 and rank_search >= '.$iMaxRank;
  98                         $sSQL .= ' and (name is not null or housenumber is not null)';
  99                         $sSQL .= ' and class not in (\'waterway\')';
 100                         $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
 101                         $sSQL .= ' OR ST_DWithin('.$sPointSQL.', ST_Centroid(geometry), '.$fSearchDiam.'))';
 102                         $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', geometry) ASC limit 1';
 103 //var_dump($sSQL);
 104                         $aPlace = $oDB->getRow($sSQL);
 105                         $iPlaceID = $aPlace['place_id'];
 106                         if (PEAR::IsError($iPlaceID))
 107                         {
 108                                 failInternalError("Could not determine closest place.", $sSQL, $iPlaceID);
 109                         }
 110                 }
 111
 112                 // The point we found might be too small - use the address to find what it is a child of
 113                 if ($iPlaceID)
 114                 {
 115                         $sSQL = "select address_place_id from place_addressline where cached_rank_address <= $iMaxRank and place_id = $iPlaceID order by cached_rank_address desc,isaddress desc,distance desc limit 1";
 116 //var_dump($sSQL);
 117                         $iPlaceID = $oDB->getOne($sSQL);
 118                         if (PEAR::IsError($iPlaceID))
 119                         {
 120                                 failInternalError("Could not get parent for place.", $sSQL, $iPlaceID);
 121                         }
 122
 123                         if ($iPlaceID && $aPlace['place_id'] && $iMaxRank < 28)
 124                         {
 125                                 $sSQL = "select address_place_id from place_addressline where cached_rank_address <= $iMaxRank and place_id = ".$aPlace['place_id']." order by cached_rank_address desc,isaddress desc,distance desc";
 126 //var_dump($sSQL);
 127                                 $iPlaceID = $oDB->getOne($sSQL);
 128                                 if (PEAR::IsError($iPlaceID))
 129                                 {
 130                                         failInternalError("Could not get larger parent for place.", $sSQL, $iPlaceID);
 131                                 }
 132                         }
 133                         if (!$iPlaceID)
 134                         {
 135                                 $iPlaceID = $aPlace['place_id'];
 136                         }
 137                 }
 138         }
 139
 140         if ($iPlaceID)
 141         {
 142                 $sSQL = "select placex.*,";
 143                 $sSQL .= " get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
 144                 $sSQL .= " get_name_by_language(name, $sLanguagePrefArraySQL) as placename,";
 145                 $sSQL .= " get_name_by_language(name, ARRAY['ref']) as ref,";
 146                 $sSQL .= " st_y(st_centroid(geometry)) as lat, st_x(st_centroid(geometry)) as lon";
 147                 $sSQL .= " from placex where place_id = $iPlaceID ";
 148 //var_dump($sSQL);
 149                 $aPlace = $oDB->getRow($sSQL);
 150
 151                 if ($bShowAddressDetails)
 152                 {
 153                         $aAddress = getAddressDetails($oDB, $sLanguagePrefArraySQL, $iPlaceID, $aPlace['country_code']);
 154                 }
 155                 $aClassType = getClassTypes();
 156                 $sAddressType = '';
 157                 if (isset($aClassType[$aPlace['class'].':'.$aPlace['type'].':'.$aPlace['admin_level']]))
 158                         $sAddressType = $aClassType[$aPlace['class'].':'.$aPlace['type'].':'.$aPlace['admin_level']]['simplelabel'];
 159                 elseif (isset($aClassType[$aPlace['class'].':'.$aPlace['type']]))
 160                         $sAddressType = $aClassType[$aPlace['class'].':'.$aPlace['type']]['simplelabel'];
 161                 else $sAddressType = $aPlace['class'];
 162                 $aPlace['addresstype'] = $sAddressType;
 163
 164         }
 165         include(CONST_BasePath.'/lib/template/address-'.$sOutputFormat.'.php');