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 = $oDB->getOne($sSQL = ("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 (CONST_Debug) var_dump($sSQL);
  43                 if (!$iPlaceID) $sError = 'OSM ID Not Found';
  44         }
  45         else
  46         {
  47                 // Location to look up
  48                 $fLat = (float)$_GET['lat'];
  49                 $fLon = (float)$_GET['lon'];
  50                 $sPointSQL = "ST_SetSRID(ST_Point($fLon,$fLat),4326)";
  51
  52                 // Zoom to rank, this could probably be calculated but a lookup gives fine control
  53                 $aZoomRank = array(
  54                                 0 => 2, // Continent / Sea
  55                                 1 => 2,
  56                                 2 => 2,
  57                                 3 => 4, // Country
  58                                 4 => 4,
  59                                 5 => 8, // State
  60                                 6 => 10, // Region
  61                                 7 => 10,
  62                                 8 => 12, // County
  63                                 9 => 12,
  64                                 10 => 17, // City
  65                                 11 => 17,
  66                                 12 => 18, // Town / Village
  67                                 13 => 18,
  68                                 14 => 22, // Suburb
  69                                 15 => 22,
  70                                 16 => 26, // Street, TODO: major street?
  71                                 17 => 26,
  72                                 18 => 30, // or >, Building
  73                                 19 => 30, // or >, Building
  74                                 );
  75                 $iMaxRank = (isset($_GET['zoom']) && isset($aZoomRank[$_GET['zoom']]))?$aZoomRank[$_GET['zoom']]:28;
  76
  77                 // Find the nearest point
  78                 $fSearchDiam = 0.0004;
  79                 $iPlaceID = null;
  80                 $aArea = false;
  81                 $fMaxAreaDistance = 1;
  82                 while(!$iPlaceID && $fSearchDiam < $fMaxAreaDistance)
  83                 {
  84                         $fSearchDiam = $fSearchDiam * 2;
  85
  86                         // If we have to expand the search area by a large amount then we need a larger feature
  87                         // then there is a limit to how small the feature should be
  88                         if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4;
  89                         if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8;
  90                         if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10;
  91                         if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12;
  92                         if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17;
  93                         if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18;
  94                         if ($fSearchDiam > 0.008 && $iMaxRank > 22) $iMaxRank = 22;
  95                         if ($fSearchDiam > 0.001 && $iMaxRank > 26) $iMaxRank = 26;
  96
  97                         $sSQL = 'select place_id,parent_place_id,rank_search from placex';
  98                         $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
  99                         $sSQL .= ' and rank_search != 28 and rank_search >= '.$iMaxRank;
 100                         $sSQL .= ' and (name is not null or housenumber is not null)';
 101                         $sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\')';
 102                         $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
 103                         $sSQL .= ' and indexed_status = 0 ';
 104                         $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))';
 105                         $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', geometry) ASC limit 1';
 106                         if (CONST_Debug) var_dump($sSQL);
 107                         $aPlace = $oDB->getRow($sSQL);
 108                         if (PEAR::IsError($aPlace))
 109                         {
 110                                 failInternalError("Could not determine closest place.", $sSQL, $iPlaceID);
 111                         }
 112                         $iPlaceID = $aPlace['place_id'];
 113                         $iParentPlaceID = $aPlace['parent_place_id'];
 114                 }
 115
 116                 // The point we found might be too small - use the address to find what it is a child of
 117                 if ($iPlaceID && $iMaxRank < 28)
 118                 {
 119                         if ($aPlace['rank_search'] > 28 && $iParentPlaceID)
 120                         {
 121                                 $iPlaceID = $iParentPlaceID;
 122                         }
 123                         $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";
 124                         $iPlaceID = $oDB->getOne($sSQL);
 125                         if (PEAR::IsError($iPlaceID))
 126                         {
 127                                 failInternalError("Could not get parent for place.", $sSQL, $iPlaceID);
 128                         }
 129                         if (!$iPlaceID)
 130                         {
 131                                 $iPlaceID = $aPlace['place_id'];
 132                         }
 133                 }
 134         }
 135
 136         if ($iPlaceID)
 137         {
 138                 $sSQL = "select placex.*,";
 139                 $sSQL .= " get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
 140                 $sSQL .= " get_name_by_language(name, $sLanguagePrefArraySQL) as placename,";
 141                 $sSQL .= " get_name_by_language(name, ARRAY['ref']) as ref,";
 142                 $sSQL .= " st_y(centroid) as lat, st_x(centroid) as lon";
 143                 $sSQL .= " from placex where place_id = $iPlaceID ";
 144
 145                 $aPlace = $oDB->getRow($sSQL);
 146                 //var_dump($sSQL, $aPlace); exit;
 147
 148                 if ($bShowAddressDetails)
 149                 {
 150                         $aAddress = getAddressDetails($oDB, $sLanguagePrefArraySQL, $iPlaceID, $aPlace['calculated_country_code']);
 151                 }
 152                 $aClassType = getClassTypes();
 153                 $sAddressType = '';
 154                 $sClassType = $aPlace['class'].':'.$aPlace['type'].':'.$aPlace['admin_level'];
 155                 if (isset($aClassType[$sClassType]) && isset($aClassType[$sClassType]['simplelabel']))
 156                 {
 157                         $sAddressType = $aClassType[$aClassType]['simplelabel'];
 158                 }
 159                 else
 160                 {
 161                         $sClassType = $aPlace['class'].':'.$aPlace['type'];
 162                         if (isset($aClassType[$sClassType]) && isset($aClassType[$sClassType]['simplelabel']))
 163                                 $sAddressType = $aClassType[$sClassType]['simplelabel'];
 164                         else $sAddressType = $aPlace['class'];
 165                 }
 166                 $aPlace['addresstype'] = $sAddressType;
 167
 168         }
 169
 170         if (CONST_Debug) exit;
 171
 172         include(CONST_BasePath.'/lib/template/address-'.$sOutputFormat.'.php');