{"id":557,"date":"2009-10-19T23:30:06","date_gmt":"2009-10-19T21:30:06","guid":{"rendered":"http:\/\/blogs.wittwer.fr\/whiler\/?p=557"},"modified":"2023-03-12T15:08:48","modified_gmt":"2023-03-12T14:08:48","slug":"sample-geolite-city-delphi","status":"publish","type":"post","link":"https:\/\/blogs.wittwer.fr\/whiler\/2009\/10\/19\/sample-geolite-city-delphi\/","title":{"rendered":"Exemple GeoLite City avec Delphi"},"content":{"rendered":"

MaxMind<\/a> fournit des bases de donn\u00e9es de g\u00e9olocalisation<\/a>W<\/em><\/sup>, dont GeoLite City<\/a>, qui est gratuit et permet de localiser g\u00e9ographiquement une adresse IP.
\nCette base de donn\u00e9es est actualis\u00e9e tous les mois.<\/p>\n

Une API pour Delphi<\/a> est disponible, mais celle-ci, au jour d’aujourd’hui, n’a pas encore \u00e9t\u00e9 port\u00e9e sous Delphi 2009<\/a>W<\/em><\/sup>, la premi\u00e8re version Unicode<\/a>W<\/em><\/sup> qui introduit des nouveaux types de cha\u00eenes de caract\u00e8res dans ce langage, et engendre une erreur avec l’API telle qu’elle est fournie.<\/p>\n

Je suis donc parti de l'API<\/a>W<\/em><\/sup> fournie, et j’ai chang\u00e9 quelques types, cast\u00e9 quelques variables, et supprim\u00e9 ainsi tous les warnings que j’obtenais… je ne suis pas un expert Delphi, loin de l\u00e0, mais si cela vous interresse de r\u00e9cup\u00e9rer un code qui compile, voici un exemple qui fonctionne. Vous aurez besoin de la base de g\u00e9olocalisation, disponible \u00e0 cette adresse pour pouvoir ex\u00e9cuter cette application : https:\/\/geolite.maxmind.com\/download\/geoip\/database\/GeoLiteCity.dat.gz<\/a><\/p>\n

Je me suis \u00e9galement inspir\u00e9 de l’extension<\/a> install\u00e9e<\/a> sur ce blog pour la localisation sur la planisph\u00e8re et l’ajout des r\u00e9gions en toutes lettres…<\/p>\n

Ces noms de r\u00e9gions viennent en plus de l’API standard… Les pays et r\u00e9gions sont soit en fran\u00e7ais, soit en anglais.
\n
\nLe fichier GeoIP.pas<\/a>, l’API avec les r\u00e9gions en plus (constantes volontairement tronqu\u00e9es dans l’affichage du blog) :<\/p>\n

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<\/div><\/td>
{
\n * Copyright (C) 2005 MaxMind LLC  All Rights Reserved.
\n *
\n * This library is free software; you can redistribute it and\/or
\n * modify it under the terms of the GNU General Public
\n * License as published by the Free Software Foundation; either
\n * version 2 of the License, or (at your option) any later version.
\n *
\n * This library is distributed in the hope that it will be useful,
\n * but WITHOUT ANY WARRANTY; without even the implied warranty of
\n * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
\n * General Public License for more details.
\n *
\n * You should have received a copy of the GNU General Public
\n * License along with this library; if not, write to the Free Software
\n * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
\n
\n * ChangeLog
\n * 2003-04-09 Translation of C# class to Pascal provided by W. Tracz
\n * 2005-07-20 Added support for GeoIP Region, City, ISP and Organization (Yvan Schwab\/esoftys)
\n * 2009-10-18 Compatible with Delphi 2009 and above (AnsiString) + regions added
\n}<\/span>
\n
\n{ Thanks to W. Tracz\/Yvan Schwab for contributing this class }<\/span>
\n
\nunit<\/span> GeoIP;<\/span>
\n
\ninterface<\/span>
\n
\nuses<\/span> Classes,<\/span> SysUtils,<\/span> WinSock;<\/span>
\n
\ntype<\/span>
\n  TGeoIPResult =<\/span> (<\/span>
\n    GEOIP_SUCCESS                 =<\/span> 0<\/span>,<\/span>
\n    GEOIP_NODATA                  =<\/span> 1<\/span>,<\/span>
\n    GEOIP_ERROR_IPADDR            =<\/span> 2<\/span>,<\/span>
\n    GEOIP_ERROR_DBTYPE            =<\/span> 3<\/span>,<\/span>
\n    GEOIP_ERROR_IO                =<\/span> 4<\/span>
\n  )<\/span>;<\/span>
\n
\n  TGeoIPDBTypes =<\/span> (<\/span>
\n    GEOIP_COUNTRY_EDITION     =<\/span> 1<\/span>,<\/span>
\n    GEOIP_REGION_EDITION_REV0 =<\/span> 7<\/span>,<\/span>
\n    GEOIP_CITY_EDITION_REV0   =<\/span> 6<\/span>,<\/span>
\n    GEOIP_ORG_EDITION         =<\/span> 5<\/span>,<\/span>
\n    GEOIP_ISP_EDITION         =<\/span> 4<\/span>,<\/span>
\n    GEOIP_CITY_EDITION_REV1   =<\/span> 2<\/span>,<\/span>
\n    GEOIP_REGION_EDITION_REV1 =<\/span> 3<\/span>,<\/span>
\n    GEOIP_PROXY_EDITION       =<\/span> 8<\/span>,<\/span>
\n    GEOIP_ASNUM_EDITION       =<\/span> 9<\/span>
\n  )<\/span>;<\/span>
\n
\n  TGeoIPCountry =<\/span> record<\/span>
\n    CountryCode:<\/span> ansistring<\/span>;<\/span>
\n    CountryName:<\/span> ansistring<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n
\n  TGeoIPRegion =<\/span> record<\/span>
\n    CountryCode:<\/span> ansistring<\/span>;<\/span>
\n    Region:<\/span> ansistring<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n
\n  TGeoIPCity =<\/span> record<\/span>
\n    CountryCode:<\/span> ansistring<\/span>;<\/span>
\n    CountryName:<\/span> ansistring<\/span>;<\/span>
\n    Region:<\/span> ansistring<\/span>;<\/span>
\n    City:<\/span> ansistring<\/span>;<\/span>
\n    PostalCode:<\/span> ansistring<\/span>;<\/span>
\n    Latitude:<\/span> Double<\/span>;<\/span>
\n    Longitude:<\/span> Double<\/span>;<\/span>
\n    DmaCode:<\/span> Integer<\/span>;<\/span>
\n    AreaCode:<\/span> Integer<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n
\n  TGeoIPOrg =<\/span> record<\/span>
\n    Name:<\/span> ansistring<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n
\n  TGeoIP =<\/span> class<\/span>
\n  private<\/span>
\n    FInputFile:<\/span> TFileStream;<\/span>
\n    FDatabaseType:<\/span> TGeoIPDBTypes;<\/span>
\n    FDatabaseSegments:<\/span> array<\/span> of<\/span> Cardinal<\/span>;<\/span>
\n    FDatabaseInfo:<\/span> string<\/span>;<\/span>
\n    FRecordLength:<\/span> Cardinal<\/span>;<\/span>
\n    slRegions :<\/span> TStringList;<\/span>
\n    function<\/span>  _GetCity(<\/span>IPNum:<\/span> Cardinal<\/span>;<\/span> var<\/span> GeoIPCity:<\/span> TGeoIPCity)<\/span>:<\/span> TGeoIPResult;<\/span>
\n    function<\/span>  _GetCountry(<\/span>IPNum:<\/span> Cardinal<\/span>;<\/span> var<\/span> GeoIPCountry:<\/span> TGeoIPCountry)<\/span>:<\/span> TGeoIPResult;<\/span>
\n    function<\/span>  _GetOrg(<\/span>IPNum:<\/span> Cardinal<\/span>;<\/span> var<\/span> GeoIPOrg:<\/span> TGeoIPOrg)<\/span>:<\/span> TGeoIPResult;<\/span>
\n    function<\/span>  _GetRegion(<\/span>IPNum:<\/span> Cardinal<\/span>;<\/span> var<\/span> GeoIPRegion:<\/span> TGeoIPRegion)<\/span>:<\/span> TGeoIPResult;<\/span>
\n    function<\/span>  AddrToNum(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>)<\/span>:<\/span> Cardinal<\/span>;<\/span>
\n    procedure<\/span> InitDBFile;<\/span>
\n    function<\/span>  SeekRecord(<\/span>IPNum:<\/span> Cardinal<\/span>)<\/span>:<\/span> Cardinal<\/span>;<\/span>
\n    procedure<\/span> InitRegions;<\/span>
\n  public<\/span>
\n    constructor<\/span> Create(<\/span>const<\/span> FileName:<\/span> string<\/span>)<\/span>;<\/span>
\n    destructor<\/span> Destroy;<\/span> override<\/span>;<\/span>
\n    function<\/span> GetCity(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>;<\/span> var<\/span> GeoIPCity:<\/span> TGeoIPCity)<\/span>:<\/span> TGeoIPResult;<\/span>
\n    function<\/span> GetCountry(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>;<\/span> var<\/span> GeoIPCountry:<\/span> TGeoIPCountry)<\/span>:<\/span> TGeoIPResult;<\/span>
\n    function<\/span> GetDatabaseInfo:<\/span> string<\/span>;<\/span>
\n    function<\/span> GetOrg(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>;<\/span> var<\/span> GeoIPOrg:<\/span> TGeoIPOrg)<\/span>:<\/span> TGeoIPResult;<\/span>
\n    function<\/span> GetRegion(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>;<\/span> var<\/span> GeoIPRegion:<\/span> TGeoIPRegion)<\/span>:<\/span> TGeoIPResult;<\/span>
\n  end<\/span>;<\/span>
\n
\nconst<\/span>
\n  CountryCodes:<\/span>array<\/span> [<\/span>0<\/span>..<\/span>252<\/span>]<\/span> of<\/span> ansistring<\/span> =<\/span> (<\/span>'--'<\/span>,<\/span>'AP'<\/span>,<\/span>'EU'<\/span>,<\/span>'AD'<\/span>,<\/span>'AE'<\/span>,<\/span>'AF'<\/span>,<\/span>'AG'<\/span>,<\/span>'AI'<\/span>,<\/span>'AL'<\/span>,<\/span>'AM'<\/span>,<\/span>'AN'<\/span>,<\/span>'AO'<\/span>,<\/span>'AQ'<\/span>,<\/span>'AR'<\/span>,<\/span>'AS'<\/span>,<\/span>'AT'<\/span>,<\/span>'AU'<\/span>,<\/span>'AW'<\/span>,<\/span>'AZ'<\/span>,<\/span>'BA'<\/span>,<\/span>'BB'<\/span>,<\/span>'BD'<\/span>,<\/span>'BE'<\/span>,<\/span>'BF'<\/span>,<\/span>'BG'<\/span>,<\/span>'BH'<\/span>,<\/span>'BI'<\/span>,<\/span>'BJ'<\/span>,<\/span>'BM'<\/span>,<\/span>'BN'<\/span>,<\/span>'BO'<\/span>,<\/span>'BR'<\/span>,<\/span>'BS'<\/span>,<\/span>'BT'<\/span>,<\/span>'BV'<\/span>,<\/span>'BW'<\/span>,<\/span>'BY'<\/span>,<\/span>'BZ'<\/span>,<\/span>'CA'<\/span>,<\/span>'CC'<\/span>,<\/span>'CD'<\/span>,<\/span>'CF'<\/span>,<\/span>'CG'<\/span>,<\/span>'CH'<\/span>,<\/span>'CI'<\/span>,<\/span>'CK'<\/span>,<\/span>'CL'<\/span>,<\/span>'CM'<\/span>,<\/span>'CN'<\/span>,<\/span>'CO'<\/span>,<\/span>'CR'<\/span>,<\/span>'CU'<\/span>,<\/span>'CV'<\/span>,<\/span>'CX'<\/span>,<\/span>'CY'<\/span>,<\/span>'CZ'<\/span>,<\/span>'DE'<\/span>,<\/span>'DJ'<\/span>,<\/span>'DK'<\/span>,<\/span>'DM'<\/span>,<\/span>'DO'<\/span>,<\/span>'DZ'<\/span>,<\/span>'EC'<\/span>,<\/span>'EE'<\/span>,<\/span>'EG'<\/span>,<\/span>'EH'<\/span>,<\/span>'ER'<\/span>,<\/span>'ES'<\/span>,<\/span>'ET'<\/span>,<\/span>'FI'<\/span>,<\/span>'FJ'<\/span>,<\/span>'FK'<\/span>,<\/span>'FM'<\/span>,<\/span>'FO'<\/span>,<\/span>'FR'<\/span>,<\/span>'FX'<\/span>,<\/span>'GA'<\/span>,<\/span>'GB'<\/span>,<\/span>'GD'<\/span>,<\/span>'GE'<\/span>,<\/span>'GF'<\/span>,<\/span>'GH'<\/span>,<\/span>'GI'<\/span>,<\/span>'GL'<\/span>,<\/span>'GM'<\/span>,<\/span>'GN'<\/span>,<\/span>'GP'<\/span>,<\/span>'GQ'<\/span>,<\/span>'GR'<\/span>,<\/span>'GS'<\/span>,<\/span>'GT'<\/span>,<\/span>'GU'<\/span>,<\/span>'GW'<\/span>,<\/span>
\n                                                'GY'<\/span>,<\/span>'HK'<\/span>,<\/span>'HM'<\/span>,<\/span>'HN'<\/span>,<\/span>'HR'<\/span>,<\/span>'HT'<\/span>,<\/span>'HU'<\/span>,<\/span>'ID'<\/span>,<\/span>'IE'<\/span>,<\/span>'IL'<\/span>,<\/span>'IN'<\/span>,<\/span>'IO'<\/span>,<\/span>'IQ'<\/span>,<\/span>'IR'<\/span>,<\/span>'IS'<\/span>,<\/span>'IT'<\/span>,<\/span>'JM'<\/span>,<\/span>'JO'<\/span>,<\/span>'JP'<\/span>,<\/span>'KE'<\/span>,<\/span>'KG'<\/span>,<\/span>'KH'<\/span>,<\/span>'KI'<\/span>,<\/span>'KM'<\/span>,<\/span>'KN'<\/span>,<\/span>'KP'<\/span>,<\/span>'KR'<\/span>,<\/span>'KW'<\/span>,<\/span>'KY'<\/span>,<\/span>'KZ'<\/span>,<\/span>'LA'<\/span>,<\/span>'LB'<\/span>,<\/span>'LC'<\/span>,<\/span>'LI'<\/span>,<\/span>'LK'<\/span>,<\/span>'LR'<\/span>,<\/span>'LS'<\/span>,<\/span>'LT'<\/span>,<\/span>'LU'<\/span>,<\/span>'LV'<\/span>,<\/span>'LY'<\/span>,<\/span>'MA'<\/span>,<\/span>'MC'<\/span>,<\/span>'MD'<\/span>,<\/span>'MG'<\/span>,<\/span>'MH'<\/span>,<\/span>'MK'<\/span>,<\/span>'ML'<\/span>,<\/span>'MM'<\/span>,<\/span>'MN'<\/span>,<\/span>'MO'<\/span>,<\/span>'MP'<\/span>,<\/span>'MQ'<\/span>,<\/span>'MR'<\/span>,<\/span>'MS'<\/span>,<\/span>'MT'<\/span>,<\/span>'MU'<\/span>,<\/span>'MV'<\/span>,<\/span>'MW'<\/span>,<\/span>'MX'<\/span>,<\/span>'MY'<\/span>,<\/span>'MZ'<\/span>,<\/span>'NA'<\/span>,<\/span>'NC'<\/span>,<\/span>'NE'<\/span>,<\/span>'NF'<\/span>,<\/span>'NG'<\/span>,<\/span>'NI'<\/span>,<\/span>'NL'<\/span>,<\/span>'NO'<\/span>,<\/span>'NP'<\/span>,<\/span>'NR'<\/span>,<\/span>'NU'<\/span>,<\/span>'NZ'<\/span>,<\/span>'OM'<\/span>,<\/span>'PA'<\/span>,<\/span>'PE'<\/span>,<\/span>'PF'<\/span>,<\/span>'PG'<\/span>,<\/span>'PH'<\/span>,<\/span>'PK'<\/span>,<\/span>'PL'<\/span>,<\/span>'PM'<\/span>,<\/span>'PN'<\/span>,<\/span>'PR'<\/span>,<\/span>'PS'<\/span>,<\/span>'PT'<\/span>,<\/span>'PW'<\/span>,<\/span>'PY'<\/span>,<\/span>'QA'<\/span>,<\/span>'RE'<\/span>,<\/span>'RO'<\/span>,<\/span>'RU'<\/span>,<\/span>
\n                                                'RW'<\/span>,<\/span>'SA'<\/span>,<\/span>'SB'<\/span>,<\/span>'SC'<\/span>,<\/span>'SD'<\/span>,<\/span>'SE'<\/span>,<\/span>'SG'<\/span>,<\/span>'SH'<\/span>,<\/span>'SI'<\/span>,<\/span>'SJ'<\/span>,<\/span>'SK'<\/span>,<\/span>'SL'<\/span>,<\/span>'SM'<\/span>,<\/span>'SN'<\/span>,<\/span>'SO'<\/span>,<\/span>'SR'<\/span>,<\/span>'ST'<\/span>,<\/span>'SV'<\/span>,<\/span>'SY'<\/span>,<\/span>'SZ'<\/span>,<\/span>'TC'<\/span>,<\/span>'TD'<\/span>,<\/span>'TF'<\/span>,<\/span>'TG'<\/span>,<\/span>'TH'<\/span>,<\/span>'TJ'<\/span>,<\/span>'TK'<\/span>,<\/span>'TM'<\/span>,<\/span>'TN'<\/span>,<\/span>'TO'<\/span>,<\/span>'TL'<\/span>,<\/span>'TR'<\/span>,<\/span>'TT'<\/span>,<\/span>'TV'<\/span>,<\/span>'TW'<\/span>,<\/span>'TZ'<\/span>,<\/span>'UA'<\/span>,<\/span>'UG'<\/span>,<\/span>'UM'<\/span>,<\/span>'US'<\/span>,<\/span>'UY'<\/span>,<\/span>'UZ'<\/span>,<\/span>'VA'<\/span>,<\/span>'VC'<\/span>,<\/span>'VE'<\/span>,<\/span>'VG'<\/span>,<\/span>'VI'<\/span>,<\/span>'VN'<\/span>,<\/span>'VU'<\/span>,<\/span>'WF'<\/span>,<\/span>'WS'<\/span>,<\/span>'YE'<\/span>,<\/span>'YT'<\/span>,<\/span>'RS'<\/span>,<\/span>'ZA'<\/span>,<\/span>'ZM'<\/span>,<\/span>'ME'<\/span>,<\/span>'ZW'<\/span>,<\/span>'A1'<\/span>,<\/span>'A2'<\/span>,<\/span>'O1'<\/span>,<\/span>'AX'<\/span>,<\/span>'GG'<\/span>,<\/span>'IM'<\/span>,<\/span>'JE'<\/span>,<\/span>'BL'<\/span>,<\/span>'MF'<\/span>)<\/span>;<\/span>
\n
\n  CountryNames:<\/span>array<\/span> [<\/span>0<\/span>..<\/span>252<\/span>]<\/span> of<\/span> ansistring<\/span> =<\/span> (<\/span>'ND'<\/span>,<\/span> 'R\u00e9gion Asie \/ Pacifique'<\/span>,<\/span> 'Europe'<\/span>,<\/span> 'Andorre'<\/span>,<\/span> '\u00c9mirats Arabes Unis'<\/span>,<\/span>
\n                                                'Afghanistan'<\/span>,<\/span>
\n[<\/span>...<\/span>]<\/span>
\n                                                ,<\/span> 'Saint-Barth\u00e9lemy'<\/span>,<\/span> 'Saint Martin'<\/span>)<\/span>;<\/span>
\n  RegionNames:<\/span>array<\/span> [<\/span>0<\/span>..<\/span>4209<\/span>]<\/span> of<\/span> ansistring<\/span> =<\/span> (<\/span>'AD02=Canillo'<\/span>,<\/span> 'AD03=Encamp'<\/span>,<\/span> 'AD04=La Massana'<\/span>,<\/span> 'AD05=Ordino'<\/span>,<\/span> 'AD06=Sant Julia de Loria'<\/span>,<\/span> 'AD07=Andorra la Vella'<\/span>,<\/span> 'AD08=Escaldes-Engordany'<\/span>,<\/span> 'AE01=Abu Dhabi'<\/span>,<\/span> 'AE02=Ajman'<\/span>,<\/span> 'AE03=Dubai'<\/span>,<\/span>
\n          [<\/span>...<\/span>]<\/span>                                      'ZW10=Harare'<\/span>)<\/span>;<\/span>
\n
\nimplementation<\/span>
\n
\nconst<\/span>
\n  COUNTRY_BEGIN =<\/span> 16776960<\/span>;<\/span>
\n  STATE_BEGIN_REV0 =<\/span> 16700000<\/span>;<\/span>
\n  STATE_BEGIN_REV1  =<\/span> 16000000<\/span>;<\/span>
\n  STRUCTURE_INFO_MAX_SIZE =<\/span> 20<\/span>;<\/span>
\n  DATABASE_INFO_MAX_SIZE =<\/span> 100<\/span>;<\/span>
\n  SEGMENT_RECORD_LENGTH =<\/span> 3<\/span>;<\/span>
\n  STANDARD_RECORD_LENGTH =<\/span> 3<\/span>;<\/span>
\n  ORG_RECORD_LENGTH =<\/span> 4<\/span>;<\/span>
\n  MAX_RECORD_LENGTH =<\/span> 4<\/span>;<\/span>
\n  MAX_ORG_RECORD_LENGTH =<\/span> 300<\/span>;<\/span>
\n  FULL_RECORD_LENGTH =<\/span> 50<\/span>;<\/span>
\n  US_OFFSET =<\/span> 1<\/span>;<\/span>
\n  CANADA_OFFSET =<\/span> 677<\/span>;<\/span>
\n  WORLD_OFFSET =<\/span> 1353<\/span>;<\/span>
\n  FIPS_RANGE =<\/span> 360<\/span>;<\/span>
\n
\n{ TGeoIP }<\/span>
\n
\nconstructor<\/span> TGeoIP.<\/span>Create<\/span>(<\/span>const<\/span> FileName:<\/span> string<\/span>)<\/span>;<\/span>
\nbegin<\/span>
\n  inherited<\/span> Create;<\/span>
\n  FInputFile :<\/span>=<\/span> TFileStream.<\/span>Create<\/span>(<\/span>FileName,<\/span> fmOpenRead or<\/span> fmShareDenyNone)<\/span>;<\/span>
\n  InitDBFile;<\/span>
\n  InitRegions;<\/span>
\nend<\/span>;<\/span>
\n
\ndestructor<\/span> TGeoIP.<\/span>Destroy<\/span>;<\/span>
\nbegin<\/span>
\n  if<\/span> Assigned<\/span>(<\/span>FInputFile)<\/span> then<\/span>
\n    FInputFile.<\/span>Free<\/span>;<\/span>
\n  if<\/span> Assigned<\/span>(<\/span>slRegions)<\/span> then<\/span>
\n    slRegions.<\/span>Free<\/span>;<\/span>
\n  inherited<\/span> Destroy;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>_GetCity(<\/span>IPNum:<\/span> Cardinal<\/span>;<\/span> var<\/span> GeoIPCity:<\/span> TGeoIPCity)<\/span>:<\/span> TGeoIPResult;<\/span>
\nvar<\/span>
\n   SeekCity:<\/span> Cardinal<\/span>;<\/span>
\n   RecordPointer:<\/span> Cardinal<\/span>;<\/span>
\n   StrLen:<\/span> Cardinal<\/span>;<\/span>
\n   buf:<\/span> array<\/span>[<\/span>0<\/span>..<\/span>FULL_RECORD_LENGTH<\/span>-<\/span>1<\/span>]<\/span> of<\/span> Byte<\/span>;<\/span>
\n   p:<\/span> PAnsiChar<\/span>;<\/span>
\n   i:<\/span> Integer<\/span>;<\/span>
\n   DmaAreaCombo:<\/span> Integer<\/span>;<\/span>
\nbegin<\/span>
\n  if<\/span> (<\/span>FDatabaseType <> GEOIP_CITY_EDITION_REV0)<\/span> and<\/span> (<\/span>FDatabaseType <> GEOIP_CITY_EDITION_REV1)<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_ERROR_DBTYPE;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  SeekCity :<\/span>=<\/span> SeekRecord(<\/span>IPNum)<\/span>;<\/span>
\n  if<\/span> SeekCity =<\/span> FDatabaseSegments[<\/span>0<\/span>]<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_NODATA;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  RecordPointer :<\/span>=<\/span> SeekCity +<\/span> (<\/span>2<\/span> *<\/span> FRecordLength -<\/span> 1<\/span>)<\/span> *<\/span> FDatabaseSegments[<\/span>0<\/span>]<\/span>;<\/span>
\n  FInputFile.<\/span>Seek<\/span>(<\/span>RecordPointer,<\/span> soFromBeginning)<\/span>;<\/span>
\n  FInputFile.<\/span>Read<\/span>(<\/span>buf,<\/span> FULL_RECORD_LENGTH)<\/span>;<\/span>
\n
\n  \/\/ get country<\/span>
\n  GeoIPCity.<\/span>CountryCode<\/span> :<\/span>=<\/span> CountryCodes[<\/span>buf[<\/span>0<\/span>]<\/span>]<\/span>;<\/span>
\n  GeoIPCity.<\/span>CountryName<\/span> :<\/span>=<\/span> CountryNames[<\/span>buf[<\/span>0<\/span>]<\/span>]<\/span>;<\/span>
\n
\n  \/\/ get region<\/span>
\n  p :<\/span>=<\/span> @<\/span>buf[<\/span>1<\/span>]<\/span>;<\/span>
\n  StrLen :<\/span>=<\/span> 0<\/span>;<\/span>
\n  while<\/span> (<\/span>p[<\/span>StrLen]<\/span> <> #0<\/span>)<\/span> do<\/span>
\n    Inc<\/span>(<\/span>StrLen)<\/span>;<\/span>
\n  GeoIPCity.<\/span>Region<\/span> :<\/span>=<\/span> Copy<\/span>(<\/span>p,<\/span> 0<\/span>,<\/span> StrLen)<\/span>;<\/span>
\n
\n  \/\/ Region label<\/span>
\n  if<\/span> (<\/span>(<\/span>GeoIPCity.<\/span>Region<\/span> <> ''<\/span>)<\/span> and<\/span> (<\/span>slRegions.<\/span>IndexOfName<\/span>(<\/span>string<\/span>(<\/span>GeoIPCity.<\/span>CountryCode<\/span> +<\/span> GeoIPCity.<\/span>Region<\/span>)<\/span>)<\/span> <> -<\/span>1<\/span>)<\/span>)<\/span> then<\/span>
\n  begin<\/span>
\n    GeoIPCity.<\/span>Region<\/span> :<\/span>=<\/span> AnsiString<\/span>(<\/span>slRegions.<\/span>Values<\/span>[<\/span>string<\/span>(<\/span>GeoIPCity.<\/span>CountryCode<\/span> +<\/span> GeoIPCity.<\/span>Region<\/span>)<\/span>]<\/span>)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n
\n  \/\/ get city<\/span>
\n  Inc<\/span>(<\/span>p,<\/span> StrLen +<\/span> 1<\/span>)<\/span>;<\/span>
\n  StrLen :<\/span>=<\/span> 0<\/span>;<\/span>
\n  while<\/span> (<\/span>p[<\/span>StrLen]<\/span> <> #0<\/span>)<\/span> do<\/span>
\n    Inc<\/span>(<\/span>StrLen)<\/span>;<\/span>
\n  GeoIPCity.<\/span>City<\/span> :<\/span>=<\/span> Copy<\/span>(<\/span>p,<\/span> 0<\/span>,<\/span> StrLen)<\/span>;<\/span>
\n
\n  \/\/ get postal code<\/span>
\n  Inc<\/span>(<\/span>p,<\/span> StrLen +<\/span> 1<\/span>)<\/span>;<\/span>
\n  StrLen :<\/span>=<\/span> 0<\/span>;<\/span>
\n  while<\/span> (<\/span>p[<\/span>StrLen]<\/span> <> #0<\/span>)<\/span> do<\/span>
\n    Inc<\/span>(<\/span>StrLen)<\/span>;<\/span>
\n  GeoIPCity.<\/span>PostalCode<\/span> :<\/span>=<\/span> Copy<\/span>(<\/span>p,<\/span> 0<\/span>,<\/span> StrLen)<\/span>;<\/span>
\n
\n  \/\/ get latitude<\/span>
\n  Inc<\/span>(<\/span>p,<\/span> StrLen +<\/span> 1<\/span>)<\/span>;<\/span>
\n  GeoIPCity.<\/span>Latitude<\/span> :<\/span>=<\/span> 0.0<\/span>;<\/span>
\n  for<\/span> i:<\/span>=<\/span>0<\/span> to<\/span> 2<\/span> do<\/span>
\n  begin<\/span>
\n    GeoIPCity.<\/span>Latitude<\/span> :<\/span>=<\/span> GeoIPCity.<\/span>Latitude<\/span> +<\/span> (<\/span>Integer<\/span>(<\/span>p[<\/span>i]<\/span>)<\/span> shl<\/span> (<\/span>i*<\/span>8<\/span>)<\/span>)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n  GeoIPCity.<\/span>Latitude<\/span> :<\/span>=<\/span> GeoIPCity.<\/span>Latitude<\/span>\/<\/span>10000<\/span> -<\/span> 180<\/span>;<\/span>
\n
\n  \/\/ get longitude<\/span>
\n  Inc<\/span>(<\/span>p,<\/span> 3<\/span>)<\/span>;<\/span>
\n  GeoIPCity.<\/span>Longitude<\/span> :<\/span>=<\/span> 0.0<\/span>;<\/span>
\n  for<\/span> i:<\/span>=<\/span>0<\/span> to<\/span> 2<\/span> do<\/span>
\n  begin<\/span>
\n    GeoIPCity.<\/span>Longitude<\/span> :<\/span>=<\/span> GeoIPCity.<\/span>Longitude<\/span> +<\/span> (<\/span>Integer<\/span>(<\/span>p[<\/span>i]<\/span>)<\/span> shl<\/span> (<\/span>i*<\/span>8<\/span>)<\/span>)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n  GeoIPCity.<\/span>Longitude<\/span> :<\/span>=<\/span> GeoIPCity.<\/span>Longitude<\/span>\/<\/span>10000<\/span> -<\/span> 180<\/span>;<\/span>
\n
\n  \/\/ get area code and dma code for post April 2002 databases and for US locations<\/span>
\n  GeoIPCity.<\/span>DmaCode<\/span> :<\/span>=<\/span> 0<\/span>;<\/span>
\n  GeoIPCity.<\/span>AreaCode<\/span> :<\/span>=<\/span> 0<\/span>;<\/span>
\n  if<\/span> FDatabaseType =<\/span> GEOIP_CITY_EDITION_REV1 then<\/span>
\n  begin<\/span>
\n    if<\/span> GeoIPCity.<\/span>CountryCode<\/span> =<\/span> 'US'<\/span> then<\/span>
\n    begin<\/span>
\n      Inc<\/span>(<\/span>p,<\/span> 3<\/span>)<\/span>;<\/span>
\n      DmaAreaCombo :<\/span>=<\/span> 0<\/span>;<\/span>
\n      for<\/span> i:<\/span>=<\/span>0<\/span> to<\/span> 2<\/span> do<\/span>
\n      begin<\/span>
\n        DmaAreaCombo :<\/span>=<\/span> DmaAreaCombo +<\/span> (<\/span>Integer<\/span>(<\/span>p[<\/span>i]<\/span>)<\/span> shl<\/span> (<\/span>i*<\/span>8<\/span>)<\/span>)<\/span>;<\/span>
\n      end<\/span>;<\/span>
\n      GeoIPCity.<\/span>DmaCode<\/span> :<\/span>=<\/span> DmaAreaCombo div<\/span> 1000<\/span>;<\/span>
\n      GeoIPCity.<\/span>AreaCode<\/span> :<\/span>=<\/span> DmaAreaCombo mod<\/span> 1000<\/span>;<\/span>
\n    end<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n  Result :<\/span>=<\/span> GEOIP_SUCCESS;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>_GetCountry(<\/span>IPNum:<\/span> Cardinal<\/span>;<\/span> var<\/span> GeoIPCountry:<\/span> TGeoIPCountry)<\/span>:<\/span> TGeoIPResult;<\/span>
\nvar<\/span>
\n   ret:<\/span> Cardinal<\/span>;<\/span>
\nbegin<\/span>
\n  if<\/span> (<\/span>FDatabaseType <> GEOIP_COUNTRY_EDITION)<\/span> and<\/span> (<\/span>FDatabaseType <> GEOIP_PROXY_EDITION)<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_ERROR_DBTYPE;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  ret :<\/span>=<\/span> SeekRecord(<\/span>IPNum)<\/span> -<\/span> COUNTRY_BEGIN;<\/span>
\n  if<\/span> ret > 0<\/span> then<\/span>
\n  begin<\/span>
\n    GeoIPCountry.<\/span>CountryCode<\/span> :<\/span>=<\/span> CountryCodes[<\/span>ret]<\/span>;<\/span>
\n    GeoIPCountry.<\/span>CountryName<\/span> :<\/span>=<\/span> CountryNames[<\/span>ret]<\/span>;<\/span>
\n    Result :<\/span>=<\/span> GEOIP_SUCCESS;<\/span>
\n  end<\/span>
\n  else<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_NODATA;<\/span>
\n  end<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>_GetOrg(<\/span>IPNum:<\/span> Cardinal<\/span>;<\/span> var<\/span> GeoIPOrg:<\/span> TGeoIPOrg)<\/span>:<\/span> TGeoIPResult;<\/span>
\nvar<\/span>
\n   SeekOrg:<\/span> Cardinal<\/span>;<\/span>
\n   RecordPointer:<\/span> Cardinal<\/span>;<\/span>
\n   StrLen:<\/span> Cardinal<\/span>;<\/span>
\n   buf:<\/span> array<\/span>[<\/span>0<\/span>..<\/span>MAX_ORG_RECORD_LENGTH<\/span>-<\/span>1<\/span>]<\/span> of<\/span> Byte<\/span>;<\/span>
\n   p:<\/span> PAnsiChar<\/span>;<\/span>
\nbegin<\/span>
\n  if<\/span> (<\/span>FDatabaseType <> GEOIP_ORG_EDITION)<\/span> and<\/span> (<\/span>FDatabaseType <> GEOIP_ISP_EDITION)<\/span> and<\/span> (<\/span>FDatabaseType <> GEOIP_ASNUM_EDITION)<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_ERROR_DBTYPE;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  SeekOrg :<\/span>=<\/span> SeekRecord(<\/span>IPNum)<\/span>;<\/span>
\n  if<\/span> SeekOrg =<\/span> FDatabaseSegments[<\/span>0<\/span>]<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_NODATA;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  RecordPointer :<\/span>=<\/span> SeekOrg +<\/span> (<\/span>2<\/span> *<\/span> FRecordLength -<\/span> 1<\/span>)<\/span> *<\/span> FDatabaseSegments[<\/span>0<\/span>]<\/span>;<\/span>
\n  FInputFile.<\/span>Seek<\/span>(<\/span>RecordPointer,<\/span> soFromBeginning)<\/span>;<\/span>
\n  FInputFile.<\/span>Read<\/span>(<\/span>buf,<\/span> FULL_RECORD_LENGTH)<\/span>;<\/span>
\n
\n  p :<\/span>=<\/span> @<\/span>buf[<\/span>0<\/span>]<\/span>;<\/span>
\n  StrLen :<\/span>=<\/span> 0<\/span>;<\/span>
\n  while<\/span> (<\/span>p[<\/span>StrLen]<\/span> <> #0<\/span>)<\/span> do<\/span>
\n    Inc<\/span>(<\/span>StrLen)<\/span>;<\/span>
\n  GeoIPOrg.<\/span>Name<\/span> :<\/span>=<\/span> Copy<\/span>(<\/span>p,<\/span> 0<\/span>,<\/span> StrLen)<\/span>;<\/span>
\n  Result :<\/span>=<\/span> GEOIP_SUCCESS;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>_GetRegion(<\/span>IPNum:<\/span> Cardinal<\/span>;<\/span> var<\/span> GeoIPRegion:<\/span> TGeoIPRegion)<\/span>:<\/span> TGeoIPResult;<\/span>
\nvar<\/span>
\n   SeekRegion:<\/span> Cardinal<\/span>;<\/span>
\nbegin<\/span>
\n  if<\/span> (<\/span>FDatabaseType <> GEOIP_REGION_EDITION_REV0)<\/span> and<\/span> (<\/span>FDatabaseType <> GEOIP_REGION_EDITION_REV1)<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_ERROR_DBTYPE;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  SeekRegion :<\/span>=<\/span> SeekRecord(<\/span>IPNum)<\/span>;<\/span>
\n  if<\/span> FDatabaseType =<\/span> GEOIP_REGION_EDITION_REV0 then<\/span>
\n  begin<\/span>
\n    \/\/ Region Edition, pre June 2003<\/span>
\n    Dec<\/span>(<\/span>SeekRegion,<\/span> STATE_BEGIN_REV0)<\/span>;<\/span>
\n    if<\/span> SeekRegion >=<\/span> 1000<\/span> then<\/span>
\n    begin<\/span>
\n      GeoIPRegion.<\/span>CountryCode<\/span> :<\/span>=<\/span> 'US'<\/span>;<\/span>
\n      GeoIPRegion.<\/span>Region<\/span> :<\/span>=<\/span> AnsiString<\/span>(<\/span>Chr<\/span>(<\/span>(<\/span>SeekRegion -<\/span> 1000<\/span>)<\/span> div<\/span> 26<\/span> +<\/span> 65<\/span>)<\/span> +<\/span> Chr<\/span>(<\/span>(<\/span>SeekRegion -<\/span> 1000<\/span>)<\/span> mod<\/span> 26<\/span> +<\/span> 65<\/span>)<\/span>)<\/span>;<\/span>
\n    end<\/span>
\n    else<\/span>
\n    begin<\/span>
\n      GeoIPRegion.<\/span>CountryCode<\/span> :<\/span>=<\/span> CountryCodes[<\/span>SeekRegion]<\/span>;<\/span>
\n      GeoIPRegion.<\/span>Region<\/span> :<\/span>=<\/span> ''<\/span>;<\/span>
\n    end<\/span>;<\/span>
\n  end<\/span>
\n  else<\/span> if<\/span> FDatabaseType =<\/span> GEOIP_REGION_EDITION_REV1 then<\/span>
\n  begin<\/span>
\n    \/\/ Region Edition, post June 2003<\/span>
\n    Dec<\/span>(<\/span>SeekRegion,<\/span> STATE_BEGIN_REV1)<\/span>;<\/span>
\n    if<\/span> SeekRegion < US_OFFSET then<\/span>
\n    begin<\/span>
\n      \/\/ Unknown<\/span>
\n      GeoIPRegion.<\/span>CountryCode<\/span> :<\/span>=<\/span> ''<\/span>;<\/span>
\n      GeoIPRegion.<\/span>Region<\/span> :<\/span>=<\/span> ''<\/span>;<\/span>
\n    end<\/span>
\n    else<\/span> if<\/span> SeekRegion < CANADA_OFFSET then<\/span>
\n    begin<\/span>
\n      \/\/ USA State<\/span>
\n      GeoIPRegion.<\/span>CountryCode<\/span> :<\/span>=<\/span> 'US'<\/span>;<\/span>
\n      GeoIPRegion.<\/span>Region<\/span> :<\/span>=<\/span> AnsiString<\/span>(<\/span>Chr<\/span>(<\/span>(<\/span>SeekRegion -<\/span> US_OFFSET)<\/span> div<\/span> 26<\/span> +<\/span> 65<\/span>)<\/span> +<\/span> Chr<\/span>(<\/span>(<\/span>SeekRegion -<\/span> US_OFFSET)<\/span> mod<\/span> 26<\/span> +<\/span> 65<\/span>)<\/span>)<\/span>;<\/span>
\n    end<\/span>
\n    else<\/span> if<\/span> SeekRegion < WORLD_OFFSET then<\/span>
\n    begin<\/span>
\n      \/\/ Canada Province<\/span>
\n      GeoIPRegion.<\/span>CountryCode<\/span> :<\/span>=<\/span> 'CA'<\/span>;<\/span>
\n      GeoIPRegion.<\/span>Region<\/span> :<\/span>=<\/span> AnsiString<\/span>(<\/span>Chr<\/span>(<\/span>(<\/span>SeekRegion -<\/span> CANADA_OFFSET)<\/span> div<\/span> 26<\/span> +<\/span> 65<\/span>)<\/span> +<\/span> Chr<\/span>(<\/span>(<\/span>SeekRegion -<\/span> CANADA_OFFSET)<\/span> mod<\/span> 26<\/span> +<\/span> 65<\/span>)<\/span>)<\/span>;<\/span>
\n    end<\/span>
\n    else<\/span>
\n    begin<\/span>
\n      \/\/ Not US or Canada<\/span>
\n      GeoIPRegion.<\/span>CountryCode<\/span> :<\/span>=<\/span> CountryCodes[<\/span>(<\/span>SeekRegion -<\/span> WORLD_OFFSET)<\/span> div<\/span> FIPS_RANGE]<\/span>;<\/span>
\n      GeoIPRegion.<\/span>Region<\/span> :<\/span>=<\/span> ''<\/span>;<\/span>
\n    end<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n  Result :<\/span>=<\/span> GEOIP_SUCCESS;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>AddrToNum<\/span>(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>)<\/span>:<\/span> Cardinal<\/span>;<\/span>
\nvar<\/span>
\n   netlong:<\/span> Cardinal<\/span>;<\/span>
\n   temp:<\/span> PAnsiChar<\/span>;<\/span>
\nbegin<\/span>
\ntemp :<\/span>=<\/span> PAnsiChar<\/span>(<\/span>IPAddr)<\/span>;<\/span>
\n  netlong :<\/span>=<\/span> inet_addr(<\/span>temp)<\/span>;<\/span>
\n  if<\/span> netlong <> INADDR_NONE then<\/span>
\n    Result :<\/span>=<\/span> ntohl(<\/span>netlong)<\/span>
\n  else<\/span>
\n    Result :<\/span>=<\/span> 0<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>GetCity<\/span>(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>;<\/span> var<\/span> GeoIPCity:<\/span> TGeoIPCity)<\/span>:<\/span> TGeoIPResult;<\/span>
\nvar<\/span>
\n   IPNum:<\/span> Cardinal<\/span>;<\/span>
\nbegin<\/span>
\n  IPNum :<\/span>=<\/span> AddrToNum(<\/span>IPAddr)<\/span>;<\/span>
\n  if<\/span> IPNum =<\/span> 0<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_ERROR_IPADDR;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  Result :<\/span>=<\/span> _GetCity(<\/span>IPNum,<\/span> GeoIPCity)<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>GetCountry<\/span>(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>;<\/span> var<\/span> GeoIPCountry:<\/span> TGeoIPCountry)<\/span>:<\/span> TGeoIPResult;<\/span>
\nvar<\/span>
\n   IPNum:<\/span> Cardinal<\/span>;<\/span>
\nbegin<\/span>
\n  IPNum :<\/span>=<\/span> AddrToNum(<\/span>IPAddr)<\/span>;<\/span>
\n  if<\/span> IPNum =<\/span> 0<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_ERROR_IPADDR;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  Result :<\/span>=<\/span> _GetCountry(<\/span>IPNum,<\/span> GeoIPCountry)<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>GetDatabaseInfo<\/span>:<\/span> string<\/span>;<\/span>
\nvar<\/span>
\n   i:<\/span> Integer<\/span>;<\/span>
\n   delim:<\/span> array<\/span>[<\/span>0<\/span>..<\/span>2<\/span>]<\/span> of<\/span> Byte<\/span>;<\/span>
\n   HasStructureInfo:<\/span> Boolean<\/span>;<\/span>
\nbegin<\/span>
\n  FDatabaseInfo :<\/span>=<\/span> ''<\/span>;<\/span>
\n  HasStructureInfo :<\/span>=<\/span> False<\/span>;<\/span>
\n  FInputFile.<\/span>Seek<\/span>(<\/span>-<\/span>3<\/span>,<\/span> soFromEnd)<\/span>;<\/span>
\n  for<\/span> i:<\/span>=<\/span>0<\/span> to<\/span> STRUCTURE_INFO_MAX_SIZE-<\/span>1<\/span> do<\/span>
\n  begin<\/span>
\n    FInputFile.<\/span>Read<\/span>(<\/span>delim,<\/span> 3<\/span>)<\/span>;<\/span>
\n    if<\/span> (<\/span>delim[<\/span>0<\/span>]<\/span> =<\/span> 255<\/span>)<\/span> and<\/span> (<\/span>delim[<\/span>1<\/span>]<\/span> =<\/span> 255<\/span>)<\/span> and<\/span> (<\/span>delim[<\/span>2<\/span>]<\/span> =<\/span> 255<\/span>)<\/span> then<\/span>
\n    begin<\/span>
\n      HasStructureInfo :<\/span>=<\/span> True<\/span>;<\/span>
\n      Break;<\/span>
\n    end<\/span>;<\/span>
\n    FInputFile.<\/span>Seek<\/span>(<\/span>-<\/span>4<\/span>,<\/span> soFromCurrent)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n  if<\/span> HasStructureInfo then<\/span>
\n    FInputFile.<\/span>Seek<\/span>(<\/span>-<\/span>3<\/span>,<\/span> soFromCurrent)<\/span>
\n  else<\/span>
\n    \/\/ no structure info, must be pre Sep 2002 database, go back to end<\/span>
\n    FInputFile.<\/span>Seek<\/span>(<\/span>-<\/span>3<\/span>,<\/span> soFromEnd)<\/span>;<\/span>
\n  for<\/span> i:<\/span>=<\/span>0<\/span> to<\/span> DATABASE_INFO_MAX_SIZE-<\/span>1<\/span> do<\/span>
\n  begin<\/span>
\n    FInputFile.<\/span>Read<\/span>(<\/span>delim,<\/span> 3<\/span>)<\/span>;<\/span>
\n    if<\/span> (<\/span>delim[<\/span>0<\/span>]<\/span> =<\/span> 0<\/span>)<\/span> and<\/span> (<\/span>delim[<\/span>1<\/span>]<\/span> =<\/span> 0<\/span>)<\/span> and<\/span> (<\/span>delim[<\/span>2<\/span>]<\/span> =<\/span> 0<\/span>)<\/span> then<\/span>
\n    begin<\/span>
\n      SetLength<\/span>(<\/span>FDatabaseInfo,<\/span> i)<\/span>;<\/span>
\n      FInputFile.<\/span>Read<\/span>(<\/span>PChar<\/span>(<\/span>FDatabaseInfo)<\/span>^<\/span>,<\/span> i)<\/span>;<\/span>
\n      Break;<\/span>
\n    end<\/span>;<\/span>
\n    FInputFile.<\/span>Seek<\/span>(<\/span>-<\/span>4<\/span>,<\/span> soFromCurrent)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n  Result :<\/span>=<\/span> FDatabaseInfo;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>GetOrg<\/span>(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>;<\/span> var<\/span> GeoIPOrg:<\/span> TGeoIPOrg)<\/span>:<\/span> TGeoIPResult;<\/span>
\nvar<\/span>
\n   IPNum:<\/span> Cardinal<\/span>;<\/span>
\nbegin<\/span>
\n  IPNum :<\/span>=<\/span> AddrToNum(<\/span>IPAddr)<\/span>;<\/span>
\n  if<\/span> IPNum =<\/span> 0<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_ERROR_IPADDR;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  Result :<\/span>=<\/span> _GetOrg(<\/span>IPNum,<\/span> GeoIPOrg)<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>GetRegion<\/span>(<\/span>const<\/span> IPAddr:<\/span> ansistring<\/span>;<\/span> var<\/span> GeoIPRegion:<\/span> TGeoIPRegion)<\/span>:<\/span> TGeoIPResult;<\/span>
\nvar<\/span>
\n   IPNum:<\/span> Cardinal<\/span>;<\/span>
\nbegin<\/span>
\n  IPNum :<\/span>=<\/span> AddrToNum(<\/span>IPAddr)<\/span>;<\/span>
\n  if<\/span> IPNum =<\/span> 0<\/span> then<\/span>
\n  begin<\/span>
\n    Result :<\/span>=<\/span> GEOIP_ERROR_IPADDR;<\/span>
\n    Exit;<\/span>
\n  end<\/span>;<\/span>
\n  Result :<\/span>=<\/span> _GetRegion(<\/span>IPNum,<\/span> GeoIPRegion)<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TGeoIP.<\/span>InitDBFile<\/span>;<\/span>
\nvar<\/span>
\n   i,<\/span>j:<\/span> Integer<\/span>;<\/span>
\n   delim:<\/span> array<\/span>[<\/span>0<\/span>..<\/span>2<\/span>]<\/span> of<\/span> Byte<\/span>;<\/span>
\n   buf:<\/span> array<\/span>[<\/span>0<\/span>..<\/span>SEGMENT_RECORD_LENGTH<\/span>-<\/span>1<\/span>]<\/span> of<\/span> Byte<\/span>;<\/span>
\nbegin<\/span>
\n  \/\/ default to GeoIP Country Edition<\/span>
\n  FDatabaseType :<\/span>=<\/span> GEOIP_COUNTRY_EDITION;<\/span>
\n  FRecordLength :<\/span>=<\/span> STANDARD_RECORD_LENGTH;<\/span>
\n  FInputFile.<\/span>Seek<\/span>(<\/span>-<\/span>3<\/span>,<\/span> soFromEnd)<\/span>;<\/span>
\n  for<\/span> i:<\/span>=<\/span>0<\/span> to<\/span> STRUCTURE_INFO_MAX_SIZE-<\/span>1<\/span> do<\/span>
\n  begin<\/span>
\n    FInputFile.<\/span>Read<\/span>(<\/span>delim,<\/span> 3<\/span>)<\/span>;<\/span>
\n    if<\/span> (<\/span>delim[<\/span>0<\/span>]<\/span> =<\/span> 255<\/span>)<\/span> and<\/span> (<\/span>delim[<\/span>1<\/span>]<\/span> =<\/span> 255<\/span>)<\/span> and<\/span> (<\/span>delim[<\/span>2<\/span>]<\/span> =<\/span> 255<\/span>)<\/span> then<\/span>
\n    begin<\/span>
\n      FInputFile.<\/span>Read<\/span>(<\/span>FDatabaseType,<\/span> 1<\/span>)<\/span>;<\/span>
\n      if<\/span> Byte<\/span>(<\/span>FDatabaseType)<\/span> >=<\/span> 106<\/span> then<\/span>
\n      begin<\/span>
\n        \/\/ Backward compatibility with databases from April 2003 and earlier<\/span>
\n        Dec<\/span>(<\/span>FDatabaseType,<\/span> 105<\/span>)<\/span>;<\/span>
\n      end<\/span>;<\/span>
\n      if<\/span> FDatabaseType =<\/span> GEOIP_REGION_EDITION_REV0 then<\/span>
\n      begin<\/span>
\n        \/\/ Region Edition, pre June 2003<\/span>
\n        SetLength<\/span>(<\/span>FDatabaseSegments,<\/span> 1<\/span>)<\/span>;<\/span>
\n        FDatabaseSegments[<\/span>0<\/span>]<\/span> :<\/span>=<\/span> STATE_BEGIN_REV0;<\/span>
\n      end<\/span>
\n      else<\/span> if<\/span> FDatabaseType =<\/span> GEOIP_REGION_EDITION_REV1 then<\/span>
\n      begin<\/span>
\n        \/\/ Region Edition, post June 2003<\/span>
\n        SetLength<\/span>(<\/span>FDatabaseSegments,<\/span> 1<\/span>)<\/span>;<\/span>
\n        FDatabaseSegments[<\/span>0<\/span>]<\/span> :<\/span>=<\/span> STATE_BEGIN_REV1;<\/span>
\n      end<\/span>
\n      else<\/span> if<\/span> (<\/span>FDatabaseType =<\/span> GEOIP_CITY_EDITION_REV0)<\/span> or<\/span>
\n              (<\/span>FDatabaseType =<\/span> GEOIP_CITY_EDITION_REV1)<\/span> or<\/span>
\n              (<\/span>FDatabaseType =<\/span> GEOIP_ORG_EDITION)<\/span> or<\/span>
\n              (<\/span>FDatabaseType =<\/span> GEOIP_ISP_EDITION)<\/span> or<\/span>
\n              (<\/span>FDatabaseType =<\/span> GEOIP_ASNUM_EDITION)<\/span> then<\/span>
\n      begin<\/span>
\n        \/\/ City\/Org Editions have two segments, read offset of second segment<\/span>
\n        SetLength<\/span>(<\/span>FDatabaseSegments,<\/span> 1<\/span>)<\/span>;<\/span>
\n        FDatabaseSegments[<\/span>0<\/span>]<\/span> :<\/span>=<\/span> 0<\/span>;<\/span>
\n        FInputFile.<\/span>Read<\/span>(<\/span>buf,<\/span> SEGMENT_RECORD_LENGTH)<\/span>;<\/span>
\n        for<\/span> j:<\/span>=<\/span>0<\/span> to<\/span> SEGMENT_RECORD_LENGTH-<\/span>1<\/span> do<\/span>
\n        begin<\/span>
\n          Inc<\/span>(<\/span>FDatabaseSegments[<\/span>0<\/span>]<\/span>,<\/span> Integer<\/span>(<\/span>buf[<\/span>j]<\/span>)<\/span> shl<\/span> (<\/span>j*<\/span>8<\/span>)<\/span>)<\/span>;<\/span>
\n        end<\/span>;<\/span>
\n        if<\/span> (<\/span>FDatabaseType =<\/span> GEOIP_ORG_EDITION)<\/span> or<\/span>
\n           (<\/span>FDatabaseType =<\/span> GEOIP_ISP_EDITION)<\/span> then<\/span>
\n             FRecordLength :<\/span>=<\/span> ORG_RECORD_LENGTH;<\/span>
\n      end<\/span>;<\/span>
\n      Break;<\/span>
\n    end<\/span>
\n    else<\/span>
\n    begin<\/span>
\n      FInputFile.<\/span>Seek<\/span>(<\/span>-<\/span>4<\/span>,<\/span> soFromCurrent)<\/span>;<\/span>
\n    end<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n  if<\/span> (<\/span>FDatabaseType =<\/span> GEOIP_COUNTRY_EDITION)<\/span> or<\/span>
\n     (<\/span>FDatabaseType =<\/span> GEOIP_PROXY_EDITION)<\/span> then<\/span>
\n  begin<\/span>
\n    SetLength<\/span>(<\/span>FDatabaseSegments,<\/span> 1<\/span>)<\/span>;<\/span>
\n    FDatabaseSegments[<\/span>0<\/span>]<\/span> :<\/span>=<\/span> COUNTRY_BEGIN;<\/span>
\n  end<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TGeoIP.<\/span>InitRegions<\/span>;<\/span>
\nvar<\/span>
\n  f,<\/span>t,<\/span>loop:<\/span> Integer<\/span>;<\/span>
\nbegin<\/span>
\n  slRegions :<\/span>=<\/span> TStringList.<\/span>Create<\/span>;<\/span>
\n
\n  f :<\/span>=<\/span> Low<\/span>(<\/span>RegionNames)<\/span>;<\/span>
\n  t :<\/span>=<\/span> High<\/span>(<\/span>RegionNames)<\/span>;<\/span>
\n
\n  for<\/span> loop :<\/span>=<\/span> f to<\/span> t do<\/span>
\n  begin<\/span>
\n    slRegions.<\/span>Add<\/span>(<\/span>string<\/span>(<\/span>RegionNames[<\/span>loop]<\/span>)<\/span>)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TGeoIP.<\/span>SeekRecord<\/span>(<\/span>IPNum:<\/span> Cardinal<\/span>)<\/span>:<\/span> Cardinal<\/span>;<\/span>
\nvar<\/span>
\n   depth:<\/span> Cardinal<\/span>;<\/span>
\n   offset:<\/span> Cardinal<\/span>;<\/span>
\n   i,<\/span>j:<\/span> Cardinal<\/span>;<\/span>
\n   x:<\/span> array<\/span>[<\/span>0<\/span>..<\/span>1<\/span>]<\/span> of<\/span> Cardinal<\/span>;<\/span>
\n   y:<\/span> Cardinal<\/span>;<\/span>
\n   buf:<\/span> array<\/span>[<\/span>0<\/span>..<\/span>2<\/span>*<\/span>MAX_RECORD_LENGTH-<\/span>1<\/span>]<\/span> of<\/span> Byte<\/span>;<\/span>
\nbegin<\/span>
\n  offset :<\/span>=<\/span> 0<\/span>;<\/span>
\n  for<\/span> depth:<\/span>=<\/span>31<\/span> downto<\/span> 0<\/span> do<\/span>
\n  begin<\/span>
\n    FInputFile.<\/span>Seek<\/span>(<\/span>2<\/span> *<\/span> FRecordLength *<\/span> offset,<\/span> soFromBeginning)<\/span>;<\/span>
\n    FInputFile.<\/span>Read<\/span>(<\/span>buf,<\/span> 2<\/span> *<\/span> FRecordLength)<\/span>;<\/span>
\n    for<\/span> i:<\/span>=<\/span>0<\/span> to<\/span> 1<\/span> do<\/span>
\n    begin<\/span>
\n      x[<\/span>i]<\/span> :<\/span>=<\/span> 0<\/span>;<\/span>
\n      for<\/span> j:<\/span>=<\/span>0<\/span> to<\/span> FRecordLength-<\/span>1<\/span> do<\/span>
\n      begin<\/span>
\n        y :<\/span>=<\/span> buf[<\/span>i*<\/span>FRecordLength+<\/span>j]<\/span>;<\/span>
\n        x[<\/span>i]<\/span> :<\/span>=<\/span> x[<\/span>i]<\/span> +<\/span> (<\/span>y shl<\/span> (<\/span>j*<\/span>8<\/span>)<\/span>)<\/span>;<\/span>
\n      end<\/span>;<\/span>
\n    end<\/span>;<\/span>
\n    if<\/span> (<\/span>IPNum and<\/span> (<\/span>1<\/span> shl<\/span> depth)<\/span>)<\/span> <> 0<\/span> then<\/span>
\n    begin<\/span>
\n      if<\/span> x[<\/span>1<\/span>]<\/span> >=<\/span> FDatabaseSegments[<\/span>0<\/span>]<\/span> then<\/span>
\n      begin<\/span>
\n        Result :<\/span>=<\/span> x[<\/span>1<\/span>]<\/span>;<\/span>
\n        Exit;<\/span>
\n      end<\/span>
\n      else<\/span>
\n      begin<\/span>
\n        Offset :<\/span>=<\/span> x[<\/span>1<\/span>]<\/span>;<\/span>
\n      end<\/span>;<\/span>
\n    end<\/span>
\n    else<\/span>
\n    begin<\/span>
\n      if<\/span> x[<\/span>0<\/span>]<\/span> >=<\/span> FDatabaseSegments[<\/span>0<\/span>]<\/span> then<\/span>
\n      begin<\/span>
\n        Result :<\/span>=<\/span> x[<\/span>0<\/span>]<\/span>;<\/span>
\n        Exit;<\/span>
\n      end<\/span>
\n      else<\/span>
\n      begin<\/span>
\n        Offset :<\/span>=<\/span> x[<\/span>0<\/span>]<\/span>;<\/span>
\n      end<\/span>;<\/span>
\n    end<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n  Result :<\/span>=<\/span> 0<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nend<\/span>.<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n


\nLe fichier main.pas<\/a>, exemple d’utilisation :<\/p>\n

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<\/div><\/td>
unit<\/span> main;<\/span>
\n
\ninterface<\/span>
\n
\nuses<\/span>
\n  Windows,<\/span> Messages,<\/span> SysUtils,<\/span> Variants,<\/span> Classes,<\/span> Graphics,<\/span> Controls,<\/span> Forms,<\/span>
\n  Dialogs,<\/span> StdCtrls,<\/span> ExtCtrls,<\/span> jpeg,<\/span> GeoIP,<\/span> Math,<\/span> WinSock,<\/span> Buttons,<\/span> ShellAPI,<\/span> Clipbrd;<\/span>
\n
\nconst<\/span>
\n  DOWNLOAD_URL =<\/span> 'https:\/\/geolite.maxmind.com\/download\/geoip\/database\/GeoLiteCity.dat.gz'<\/span>;<\/span>
\n  MAP_URL      =<\/span> 'https:\/\/blogs.wittwer.fr\/whiler\/visitors\/'<\/span>;<\/span>
\n  BORDERS      =<\/span> clYellow;<\/span>
\n  MIDDLE       =<\/span> clRed;<\/span>
\n  NOT_DEFINED  =<\/span> 4<\/span>;<\/span>    \/\/ > Pi<\/span>
\n  EARTH_RADIUS =<\/span> 6378<\/span>;<\/span> \/\/ Rayon \u00e9quatorial : 6 378,137<\/span>
\n
\ntype<\/span>
\n  TfrmMain =<\/span> class<\/span>(<\/span>TForm)<\/span>
\n    btnGetLocation:<\/span> TButton;<\/span>
\n    lbledtIP:<\/span> TLabeledEdit;<\/span>
\n    grpLocation:<\/span> TGroupBox;<\/span>
\n    imgMap:<\/span> TImage;<\/span>
\n    lbledtCountry:<\/span> TLabeledEdit;<\/span>
\n    lbledtCity:<\/span> TLabeledEdit;<\/span>
\n    lbledtRegion:<\/span> TLabeledEdit;<\/span>
\n    bbtnrefreshImage:<\/span> TBitBtn;<\/span>
\n    bbtnMaxMind:<\/span> TBitBtn;<\/span>
\n    bbtnMap:<\/span> TBitBtn;<\/span>
\n    bbtnDistance:<\/span> TBitBtn;<\/span>
\n    lblDistance:<\/span> TLabel;<\/span>
\n    mmoIPs:<\/span> TMemo;<\/span>
\n    bbtnMapToClipboard:<\/span> TBitBtn;<\/span>
\n    procedure<\/span> btnGetLocationClick(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\n    procedure<\/span> FormDestroy(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\n    procedure<\/span> lbledtIPChange(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\n    procedure<\/span> bbtnrefreshImageClick(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\n    procedure<\/span> FormCreate(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\n    procedure<\/span> bbtnMaxMindClick(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\n    procedure<\/span> bbtnMapClick(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\n    procedure<\/span> lbledtIPDblClick(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\n    procedure<\/span> bbtnMapToClipboardClick(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\n  private<\/span>
\n    { D\u00e9clarations priv\u00e9es }<\/span>
\n   GeoIP:<\/span> TGeoIP;<\/span>
\n   bDefaultMap:<\/span> TBitmap;<\/span>
\n   dPreviousLongitude :<\/span> Double<\/span>;<\/span>
\n   dPreviousLatitude  :<\/span> Double<\/span>;<\/span>
\n   function<\/span>  GetLocation(<\/span>sIP:<\/span> AnsiString<\/span>)<\/span>:<\/span> Boolean<\/span>;<\/span>
\n   procedure<\/span> DrawPin(<\/span>dLongitude,<\/span> dLatitude:<\/span> Double<\/span>)<\/span>;<\/span>
\n   procedure<\/span> CalculateDistance(<\/span>dLongitude,<\/span> dLatitude:<\/span> Double<\/span>)<\/span>;<\/span>
\n   function<\/span>  CheckIP(<\/span>sIP:<\/span> string<\/span>)<\/span>:<\/span> Boolean<\/span>;<\/span>
\n  public<\/span>
\n    { D\u00e9clarations publiques }<\/span>
\n  end<\/span>;<\/span>
\n
\nvar<\/span>
\n  frmMain:<\/span> TfrmMain;<\/span>
\n
\nimplementation<\/span>
\n
\n{$R *.dfm}<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>bbtnMapClick<\/span>(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\nbegin<\/span>
\n  ShellExecute(<\/span>0<\/span>,<\/span> 'open'<\/span>,<\/span> PChar<\/span>(<\/span>MAP_URL)<\/span>,<\/span> nil<\/span>,<\/span> nil<\/span>,<\/span> SW_SHOWNORMAL)<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>bbtnMapToClipboardClick<\/span>(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\nbegin<\/span>
\n  Clipboard.<\/span>Assign<\/span>(<\/span>imgMap.<\/span>Picture<\/span>.<\/span>Bitmap<\/span>)<\/span>;<\/span>
\n  MessageDlg(<\/span>'Carte copi\u00e9e dans le presse-papier.'<\/span>,<\/span>  mtInformation,<\/span> [<\/span>mbOK]<\/span>,<\/span> 0<\/span>)<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>bbtnMaxMindClick<\/span>(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\nbegin<\/span>
\n  ShellExecute(<\/span>0<\/span>,<\/span> 'open'<\/span>,<\/span> PChar<\/span>(<\/span>DOWNLOAD_URL)<\/span>,<\/span> nil<\/span>,<\/span> nil<\/span>,<\/span> SW_SHOWNORMAL)<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>bbtnrefreshImageClick<\/span>(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\nbegin<\/span>
\n  imgMap.<\/span>Refresh<\/span>;<\/span>
\n  imgMap.<\/span>Picture<\/span>.<\/span>Assign<\/span>(<\/span>bDefaultMap)<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>btnGetLocationClick<\/span>(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\nvar<\/span>
\n  sIP:<\/span>   AnsiString<\/span>;<\/span>
\n  iLoop,<\/span> iMax:<\/span> Integer<\/span>;<\/span>
\nbegin<\/span>
\n  if<\/span> (<\/span>mmoIPs.<\/span>Visible<\/span>)<\/span> then<\/span>
\n  begin<\/span>
\n    iMax :<\/span>=<\/span> mmoIPs.<\/span>Lines<\/span>.<\/span>Count<\/span> -<\/span> 1<\/span>;<\/span>
\n    for<\/span> iLoop :<\/span>=<\/span> 0<\/span> to<\/span> iMax do<\/span>
\n    begin<\/span>
\n      sIP :<\/span>=<\/span> AnsiString<\/span>(<\/span>Trim<\/span>(<\/span>mmoIPs.<\/span>Lines<\/span>[<\/span>0<\/span>]<\/span>)<\/span>)<\/span>;<\/span>
\n      GetLocation(<\/span>sIP)<\/span>;<\/span>
\n      mmoIPs.<\/span>Lines<\/span>.<\/span>Delete<\/span>(<\/span>0<\/span>)<\/span>;<\/span>
\n    end<\/span>;<\/span>
\n    mmoIPs.<\/span>Visible<\/span> :<\/span>=<\/span> False<\/span>;<\/span>
\n  end<\/span>
\n  else<\/span>
\n  begin<\/span>
\n    sIP :<\/span>=<\/span> AnsiString<\/span>(<\/span>Trim<\/span>(<\/span>lbledtIP.<\/span>Text<\/span>)<\/span>)<\/span>;<\/span>
\n    GetLocation(<\/span>sIP)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>CalculateDistance<\/span>(<\/span>dLongitude,<\/span> dLatitude:<\/span> Double<\/span>)<\/span>;<\/span>
\n  function<\/span> ArcCosWithZero(<\/span>dValue:<\/span> Double<\/span>)<\/span>:<\/span> Double<\/span>;<\/span>
\n  var<\/span>
\n    dCheck:<\/span> Double<\/span>;<\/span>
\n  begin<\/span>
\n    dCheck :<\/span>=<\/span> sqrt<\/span>(<\/span>-<\/span>dValue*<\/span>dValue+<\/span>1<\/span>)<\/span>;<\/span>
\n    if<\/span> (<\/span>dCheck =<\/span> 0<\/span>)<\/span> then<\/span>
\n      dCheck :<\/span>=<\/span> 0.0000000001<\/span>;<\/span>
\n
\n    Result :<\/span>=<\/span> -<\/span>ArcTan<\/span>(<\/span>dValue \/<\/span> dCheck)<\/span> +<\/span> (<\/span>Pi \/<\/span> 2<\/span>)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n
\nvar<\/span>
\n  dDistance :<\/span> Double<\/span>;<\/span>
\nbegin<\/span>
\n  \/\/ Degr\u00e9s en radians<\/span>
\n  dLongitude :<\/span>=<\/span> dLongitude \/<\/span> 180<\/span> *<\/span> Pi;<\/span>
\n  dLatitude  :<\/span>=<\/span> dLatitude  \/<\/span> 180<\/span> *<\/span> Pi;<\/span>
\n
\n  if<\/span> (<\/span>(<\/span>dPreviousLongitude <> NOT_DEFINED)<\/span> and<\/span> (<\/span>dPreviousLatitude <> NOT_DEFINED)<\/span>)<\/span> then<\/span>
\n  begin<\/span>
\n    \/\/Distance = Rayon * | arccos[ sin(LatA).sin(LatB)+cos(LatA).cos(LatB).cos(LonA-LonB) ] |<\/span>
\n    \/\/ Rayon \u00e9quatorial : 6 378,137<\/span>
\n    dDistance :<\/span>=<\/span> EARTH_RADIUS *<\/span> ArcCosWithZero(<\/span>Sin<\/span>(<\/span>dPreviousLatitude)<\/span>*<\/span>Sin<\/span>(<\/span>dLatitude)<\/span>+<\/span>Cos<\/span>(<\/span>dPreviousLatitude)<\/span>*<\/span>Cos<\/span>(<\/span>dLatitude)<\/span>*<\/span>Cos<\/span>(<\/span>dPreviousLongitude -<\/span> dLongitude)<\/span>)<\/span>;<\/span>
\n
\n    lblDistance.<\/span>Caption<\/span> :<\/span>=<\/span> Format<\/span>(<\/span>'Distance entre les deux derni\u00e8res adresses IPs : %8.2f km'<\/span>,<\/span> [<\/span>dDistance]<\/span>)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\n
\n  dPreviousLongitude :<\/span>=<\/span> dLongitude;<\/span>
\n  dPreviousLatitude  :<\/span>=<\/span> dLatitude;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TfrmMain.<\/span>CheckIP<\/span>(<\/span>sIP:<\/span> string<\/span>)<\/span>:<\/span> Boolean<\/span>;<\/span>
\nvar<\/span>
\n   netlong:<\/span> Cardinal<\/span>;<\/span>
\nbegin<\/span>
\n  netlong :<\/span>=<\/span> inet_addr(<\/span>PAnsiChar<\/span>(<\/span>AnsiString<\/span>(<\/span>sIP)<\/span>)<\/span>)<\/span>;<\/span>
\n  Result  :<\/span>=<\/span> (<\/span>netlong <> INADDR_NONE)<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>DrawPin<\/span>(<\/span>dLongitude,<\/span> dLatitude:<\/span> Double<\/span>)<\/span>;<\/span>
\nconst<\/span>
\n  scale =<\/span> 0.5625<\/span>;<\/span> \/\/(360 \/ Largeur|width Image);<\/span>
\nvar<\/span>
\n  pin:<\/span> TPoint;<\/span>
\nbegin<\/span>
\n  if<\/span> (<\/span>(<\/span>dLongitude <> 0<\/span>)<\/span> and<\/span> (<\/span>dLatitude <> 0<\/span>)<\/span>)<\/span> then<\/span>
\n  begin<\/span>
\n    pin.<\/span>X<\/span> :<\/span>=<\/span> Floor<\/span>(<\/span> (<\/span>dLongitude +<\/span> 180<\/span>)<\/span> \/<\/span> scale )<\/span>;<\/span>
\n    pin.<\/span>Y<\/span> :<\/span>=<\/span> Floor<\/span>(<\/span> (<\/span>90<\/span> -<\/span> dLatitude)<\/span>   \/<\/span> scale )<\/span>;<\/span>
\n
\n    with<\/span> imgMap.<\/span>Canvas<\/span> do<\/span>
\n      with<\/span> pin do<\/span>
\n      begin<\/span>
\n        Pixels[<\/span>X    ,<\/span> Y    ]<\/span> :<\/span>=<\/span> MIDDLE;<\/span>
\n        Pixels[<\/span>X -<\/span> 1<\/span>,<\/span> Y    ]<\/span> :<\/span>=<\/span> BORDERS;<\/span>
\n        Pixels[<\/span>X +<\/span> 1<\/span>,<\/span> Y    ]<\/span> :<\/span>=<\/span> BORDERS;<\/span>
\n        Pixels[<\/span>X    ,<\/span> Y -<\/span> 1<\/span>]<\/span> :<\/span>=<\/span> BORDERS;<\/span>
\n        Pixels[<\/span>X    ,<\/span> Y +<\/span> 1<\/span>]<\/span> :<\/span>=<\/span> BORDERS;<\/span>
\n      end<\/span>;<\/span>
\n  end<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>FormCreate<\/span>(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\nbegin<\/span>
\n  dPreviousLongitude :<\/span>=<\/span> NOT_DEFINED;<\/span>
\n  dPreviousLatitude  :<\/span>=<\/span> NOT_DEFINED;<\/span>
\n  \/\/ Save initial bitmap<\/span>
\n  bDefaultMap :<\/span>=<\/span> TBitmap.<\/span>Create<\/span>;<\/span>
\n  with<\/span> bDefaultMap do<\/span>
\n  begin<\/span>
\n    Width  :<\/span>=<\/span> 640<\/span>;<\/span>
\n    Height :<\/span>=<\/span> 320<\/span>;<\/span>
\n    Assign(<\/span>imgMap.<\/span>Picture<\/span>.<\/span>Bitmap<\/span>)<\/span>;<\/span>
\n  end<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>FormDestroy<\/span>(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\nbegin<\/span>
\n  if<\/span> Assigned<\/span>(<\/span>GeoIP)<\/span> then<\/span>
\n    GeoIP.<\/span>Free<\/span>;<\/span>
\n  if<\/span> Assigned<\/span>(<\/span>bDefaultMap)<\/span> then<\/span>
\n    bDefaultMap.<\/span>Free<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nfunction<\/span> TfrmMain.<\/span>GetLocation<\/span>(<\/span>sIP:<\/span> AnsiString<\/span>)<\/span>:<\/span> Boolean<\/span>;<\/span>
\nvar<\/span>
\n   GeoIPCity:<\/span> TGeoIPCity;<\/span>
\nbegin<\/span>
\n  if<\/span> not<\/span> Assigned<\/span>(<\/span>GeoIP)<\/span> then<\/span>
\n    GeoIP :<\/span>=<\/span> TGeoIP.<\/span>Create<\/span>(<\/span>'GeoLiteCity.dat'<\/span>)<\/span>;<\/span>
\n
\n  Result :<\/span>=<\/span> (<\/span>GeoIP.<\/span>GetCity<\/span>(<\/span>sIP,<\/span> GeoIPCity)<\/span> =<\/span> GEOIP_SUCCESS)<\/span>;<\/span>
\n  if<\/span> (<\/span>Result)<\/span> then<\/span>
\n  begin<\/span>
\n    lbledtCountry.<\/span>Text<\/span> :<\/span>=<\/span> string<\/span>(<\/span>GeoIPCity.<\/span>CountryName<\/span>)<\/span>;<\/span>
\n    lbledtRegion.<\/span>Text<\/span>  :<\/span>=<\/span> string<\/span>(<\/span>GeoIPCity.<\/span>Region<\/span>)<\/span>;<\/span>
\n    lbledtCity.<\/span>Text<\/span>    :<\/span>=<\/span> string<\/span>(<\/span>GeoIPCity.<\/span>City<\/span>)<\/span>;<\/span>
\n    DrawPin(<\/span>GeoIPCity.<\/span>Longitude<\/span>,<\/span> GeoIPCity.<\/span>Latitude<\/span>)<\/span>;<\/span>
\n    CalculateDistance(<\/span>GeoIPCity.<\/span>Longitude<\/span>,<\/span> GeoIPCity.<\/span>Latitude<\/span>)<\/span>;<\/span>
\n  end<\/span>
\n  else<\/span>
\n  begin<\/span>
\n    lbledtCountry.<\/span>Text<\/span> :<\/span>=<\/span> ''<\/span>;<\/span>
\n    lbledtRegion.<\/span>Text<\/span>  :<\/span>=<\/span> 'Erreur'<\/span>;<\/span>
\n    lbledtCity.<\/span>Text<\/span>    :<\/span>=<\/span> ''<\/span>;<\/span>
\n  end<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>lbledtIPChange<\/span>(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\nbegin<\/span>
\n  with<\/span> lbledtIP do<\/span>
\n  begin<\/span>
\n    if<\/span> CheckIP(<\/span>Text)<\/span> then<\/span>
\n      Font.<\/span>Color<\/span> :<\/span>=<\/span> clBlue
\n    else<\/span>
\n      Font.<\/span>Color<\/span> :<\/span>=<\/span> clRed;<\/span>
\n  end<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nprocedure<\/span> TfrmMain.<\/span>lbledtIPDblClick<\/span>(<\/span>Sender:<\/span> TObject<\/span>)<\/span>;<\/span>
\nbegin<\/span>
\n  mmoIPs.<\/span>Text<\/span> :<\/span>=<\/span> lbledtIP.<\/span>Text<\/span>;<\/span>
\n  mmoIPs.<\/span>Visible<\/span> :<\/span>=<\/span> True<\/span>;<\/span>
\nend<\/span>;<\/span>
\n
\nend<\/span>.<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n


\nLa fiche main.dfm<\/a> :
\n

\"La<\/a>

La fiche<\/p><\/div><\/p>\n

Si vous voulez directement tester l’application compil\u00e9e : WGeoIP.exe<\/a> Il faudra simplement t\u00e9l\u00e9charger la base de donn\u00e9es de g\u00e9olocalisation et l’extraire dans le m\u00eame r\u00e9pertoire (Un lien est int\u00e9gr\u00e9 \u00e0 l’application pour le t\u00e9l\u00e9chargement).<\/p>\n

Vous pouvez, si vous le souhaitez, t\u00e9l\u00e9charger l’ensemble des fichier \u00e0 partir d’ici : geoip.zip<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

MaxMind fournit des bases de donn\u00e9es de g\u00e9olocalisationW, dont GeoLite City, qui est gratuit et permet de localiser g\u00e9ographiquement une adresse IP.
\n[…]<\/p>\n

Une API pour Delphi est disponible, mais celle-ci, au jour d\u2019aujourd\u2019hui, n\u2019a pas encore \u00e9t\u00e9 port\u00e9e sous Delphi 2009, la premi\u00e8re version Unicode qui introduit des nouveaux types de cha\u00eenes de caract\u00e8res dans ce langage, et engendre une erreur avec l\u2019API telle qu\u2019elle est fournie.<\/p>\n

Je suis donc parti de l\u2019API fournie, et j\u2019ai chang\u00e9 quelques types, cast\u00e9 quelques variables, et supprim\u00e9 ainsi tous les warnings que j\u2019obtenais\u2026 <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[7,6],"tags":[122,15,27,154,43,119,120,118,108,121],"class_list":["post-557","post","type-post","status-publish","format-standard","hentry","category-delphi","category-dev","tag-122","tag-api","tag-coloration-syntaxique","tag-delphi","tag-donnees","tag-geolite","tag-localisation","tag-maxmind","tag-script","tag-unicode"],"_links":{"self":[{"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/posts\/557","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/comments?post=557"}],"version-history":[{"count":1,"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/posts\/557\/revisions"}],"predecessor-version":[{"id":6409,"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/posts\/557\/revisions\/6409"}],"wp:attachment":[{"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/media?parent=557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/categories?post=557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.wittwer.fr\/whiler\/wp-json\/wp\/v2\/tags?post=557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}