website/reverse.php

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