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67 lines
1.9 KiB
ObjectPascal
67 lines
1.9 KiB
ObjectPascal
(* Feel free to use this example code in any way
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you see fit (Public Domain) *)
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// Original example: https://gnunet.org/svn/libmicrohttpd/doc/examples/responseheaders.c
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program responseheaders;
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{$mode objfpc}{$H+}
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uses
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BaseUnix, SysUtils, libmicrohttpd;
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const
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PORT = 8888;
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FILENAME = 'picture.png';
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MIMETYPE = 'image/png';
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function AnswerToConnection(ACls: Pointer; AConnection: PMHD_Connection;
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AUrl: Pcchar; AMethod: Pcchar; AVersion: Pcchar; AUploadData: Pcchar;
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AUploadDataSize: Psize_t; AConCls: PPointer): cint; cdecl;
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const
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errorstr: Pcchar = '<html><body>An internal server error has occurred!</body></html>';
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var
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VFd: cint;
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VReturn: cint;
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VResponse: PMHD_Response;
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VSbuf: TStat;
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begin
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if StrComp(AMethod, 'GET') <> 0 then
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Exit(MHD_NO);
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VFd := FpOpen(FILENAME, O_RDONLY);
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VSbuf := Default(TStat);
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if (VFd = -1) or (FpFStat(VFd, VSbuf) <> 0) then
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begin
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(* error accessing file *)
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if VFd <> -1 then
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FpClose(VFd);
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VResponse := MHD_create_response_from_buffer(Length(errorstr),
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Pointer(errorstr), MHD_RESPMEM_PERSISTENT);
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if Assigned(VResponse) then
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begin
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VReturn := MHD_queue_response(AConnection,
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MHD_HTTP_INTERNAL_SERVER_ERROR, VResponse);
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MHD_destroy_response(VResponse);
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Exit(VReturn);
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end
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else
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Exit(MHD_NO);
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end;
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VResponse := MHD_create_response_from_fd_at_offset64(VSbuf.st_size, VFd, 0);
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MHD_add_response_header(VResponse, 'Content-Type', MIMETYPE);
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VReturn := MHD_queue_response(AConnection, MHD_HTTP_OK, VResponse);
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MHD_destroy_response(VResponse);
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Result := VReturn;
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end;
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var
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VDaemon: PMHD_Daemon;
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begin
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VDaemon := MHD_start_daemon(MHD_USE_SELECT_INTERNALLY, PORT, nil,
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nil, @AnswerToConnection, nil, MHD_OPTION_END);
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if not Assigned(VDaemon) then
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Halt(1);
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ReadLn;
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MHD_stop_daemon(VDaemon);
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end.
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