cac83daa65
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7365 8e941d3f-bd1b-0410-a28a-d453659cc2b4
103 lines
2.5 KiB
ObjectPascal
103 lines
2.5 KiB
ObjectPascal
{
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Map Viewer Download Engine for Synapse library
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Copyright (C) 2011 Maciej Kaczkowski / keit.co
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License: modified LGPL with linking exception (like RTL, FCL and LCL)
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See the file COPYING.modifiedLGPL.txt, included in the Lazarus distribution,
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for details about the license.
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See also: https://wiki.lazarus.freepascal.org/FPC_modified_LGPL
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}
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unit mvDLESynapse;
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{$mode objfpc}{$H+}
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interface
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uses
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mvDownloadEngine, SysUtils, Classes, ssl_openssl, httpsend;
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type
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{ TMvDESynapse }
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TMvDESynapse = class(TMvCustomDownloadEngine)
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private
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FProxyHost: string;
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FProxyPassword: string;
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FProxyPort: Integer;
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FProxyUsername: string;
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FUseProxy: Boolean;
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public
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procedure DownloadFile(const Url: string; str: TStream); override;
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published
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property UseProxy: Boolean read FUseProxy write FUseProxy default false;
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property ProxyHost: string read FProxyHost write FProxyHost;
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property ProxyPort: Integer read FProxyPort write FProxyPort default 0;
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property ProxyUsername: string read FProxyUsername write FProxyUsername;
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property ProxyPassword: string read FProxyPassword write FProxyPassword;
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end;
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procedure Register;
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implementation
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uses
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mvTypes;
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procedure Register;
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begin
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RegisterComponents(PALETTE_PAGE, [TMvDESynapse]);
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end;
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{ TMvDESynapse }
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procedure TMvDESynapse.DownloadFile(const Url: string; str: TStream);
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var
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FHttp: THTTPSend;
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realURL: String;
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i: Integer;
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begin
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FHttp := THTTPSend.Create;
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try
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if FUseProxy then
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begin
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FHTTP.ProxyHost := FProxyHost;
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FHTTP.ProxyPort := IntToStr(FProxyPort);
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FHTTP.ProxyUser := FProxyUsername;
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FHTTP.ProxyPass := FProxyPassword;
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end;
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if FHTTP.HTTPMethod('GET', Url) then
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begin
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// If its a 301 or 302 we need to do more processing
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if (FHTTP.ResultCode = 301) or (FHTTP.ResultCode = 302) then
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begin
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// Check the headers for the Location header
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for i := 0 to FHTTP.Headers.Count -1 do
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begin
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// Extract the URL
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if Copy(FHTTP.Headers[i], 1, 8) = 'Location' then
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realURL := copy(FHTTP.Headers[i], 11, Length(FHTTP.Headers[i]) - 10); //11);
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end;
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// If we have a URL, run it through the same function
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if Length(realURL) > 1 then
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DownloadFile(realURL, str);
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end
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else
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begin
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str.Seek(0, soFromBeginning);
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str.CopyFrom(FHTTP.Document, 0);
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str.Position := 0;
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end;
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end;
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finally
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FHttp.Free;
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end;
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end;
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end.
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