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