4334 lines
130 KiB
Plaintext
4334 lines
130 KiB
Plaintext
{==============================================================================|
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| Project : Ararat Synapse | 009.008.005 |
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|==============================================================================|
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| Content: Library base |
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|==============================================================================|
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| Copyright (c)1999-2012, Lukas Gebauer |
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| All rights reserved. |
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| |
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| Redistribution and use in source and binary forms, with or without |
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| modification, are permitted provided that the following conditions are met: |
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| |
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| Redistributions of source code must retain the above copyright notice, this |
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| list of conditions and the following disclaimer. |
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| |
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| Redistributions in binary form must reproduce the above copyright notice, |
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| this list of conditions and the following disclaimer in the documentation |
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| and/or other materials provided with the distribution. |
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| |
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| Neither the name of Lukas Gebauer nor the names of its contributors may |
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| be used to endorse or promote products derived from this software without |
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| specific prior written permission. |
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| |
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| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR |
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| ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
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| DAMAGE. |
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|==============================================================================|
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| The Initial Developer of the Original Code is Lukas Gebauer (Czech Republic).|
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| Portions created by Lukas Gebauer are Copyright (c)1999-2012. |
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| All Rights Reserved. |
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|==============================================================================|
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| Contributor(s): |
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|==============================================================================|
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| History: see HISTORY.HTM from distribution package |
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| (Found at URL: http://www.ararat.cz/synapse/) |
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|==============================================================================}
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{
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Special thanks to Gregor Ibic <gregor.ibic@intelicom.si>
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(Intelicom d.o.o., http://www.intelicom.si)
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for good inspiration about SSL programming.
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}
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{$DEFINE ONCEWINSOCK}
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{Note about define ONCEWINSOCK:
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If you remove this compiler directive, then socket interface is loaded and
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initialized on constructor of TBlockSocket class for each socket separately.
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Socket interface is used only if your need it.
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If you leave this directive here, then socket interface is loaded and
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initialized only once at start of your program! It boost performace on high
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count of created and destroyed sockets. It eliminate possible small resource
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leak on Windows systems too.
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}
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//{$DEFINE RAISEEXCEPT}
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{When you enable this define, then is Raiseexcept property is on by default
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}
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{:@abstract(Synapse's library core)
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Core with implementation basic socket classes.
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}
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{$IFDEF FPC}
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{$MODE DELPHI}
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{$ENDIF}
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{$IFDEF VER125}
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{$DEFINE BCB}
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{$ENDIF}
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{$IFDEF BCB}
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{$ObjExportAll On}
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{$ENDIF}
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{$Q-}
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{$H+}
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{$M+}
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{$TYPEDADDRESS OFF}
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//old Delphi does not have MSWINDOWS define.
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{$IFDEF WIN32}
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{$IFNDEF MSWINDOWS}
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{$DEFINE MSWINDOWS}
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{$ENDIF}
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{$ENDIF}
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{$IFDEF UNICODE}
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{$WARN IMPLICIT_STRING_CAST OFF}
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{$WARN IMPLICIT_STRING_CAST_LOSS OFF}
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{$ENDIF}
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unit blcksock;
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interface
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uses
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SysUtils, Classes,
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synafpc,
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synsock, synautil, synacode, synaip
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{$IFDEF CIL}
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,System.Net
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,System.Net.Sockets
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,System.Text
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{$ENDIF}
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;
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const
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SynapseRelease = '38';
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cLocalhost = '127.0.0.1';
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cAnyHost = '0.0.0.0';
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cBroadcast = '255.255.255.255';
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c6Localhost = '::1';
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c6AnyHost = '::0';
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c6Broadcast = 'ffff::1';
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cAnyPort = '0';
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CR = #$0d;
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LF = #$0a;
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CRLF = CR + LF;
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c64k = 65536;
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type
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{:@abstract(Exception clas used by Synapse)
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When you enable generating of exceptions, this exception is raised by
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Synapse's units.}
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ESynapseError = class(Exception)
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private
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FErrorCode: Integer;
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FErrorMessage: string;
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published
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{:Code of error. Value depending on used operating system}
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property ErrorCode: Integer read FErrorCode Write FErrorCode;
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{:Human readable description of error.}
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property ErrorMessage: string read FErrorMessage Write FErrorMessage;
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end;
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{:Types of OnStatus events}
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THookSocketReason = (
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{:Resolving is begin. Resolved IP and port is in parameter in format like:
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'localhost.somewhere.com:25'.}
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HR_ResolvingBegin,
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{:Resolving is done. Resolved IP and port is in parameter in format like:
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'localhost.somewhere.com:25'. It is always same as in HR_ResolvingBegin!}
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HR_ResolvingEnd,
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{:Socket created by CreateSocket method. It reporting Family of created
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socket too!}
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HR_SocketCreate,
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{:Socket closed by CloseSocket method.}
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HR_SocketClose,
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{:Socket binded to IP and Port. Binded IP and Port is in parameter in format
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like: 'localhost.somewhere.com:25'.}
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HR_Bind,
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{:Socket connected to IP and Port. Connected IP and Port is in parameter in
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format like: 'localhost.somewhere.com:25'.}
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HR_Connect,
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{:Called when CanRead method is used with @True result.}
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HR_CanRead,
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{:Called when CanWrite method is used with @True result.}
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HR_CanWrite,
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{:Socket is swithed to Listen mode. (TCP socket only)}
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HR_Listen,
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{:Socket Accepting client connection. (TCP socket only)}
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HR_Accept,
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{:report count of bytes readed from socket. Number is in parameter string.
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If you need is in integer, you must use StrToInt function!}
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HR_ReadCount,
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{:report count of bytes writed to socket. Number is in parameter string. If
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you need is in integer, you must use StrToInt function!}
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HR_WriteCount,
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{:If is limiting of bandwidth on, then this reason is called when sending or
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receiving is stopped for satisfy bandwidth limit. Parameter is count of
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waiting milliseconds.}
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HR_Wait,
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{:report situation where communication error occured. When raiseexcept is
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@true, then exception is called after this Hook reason.}
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HR_Error
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);
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{:Procedural type for OnStatus event. Sender is calling TBlockSocket object,
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Reason is one of set Status events and value is optional data.}
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THookSocketStatus = procedure(Sender: TObject; Reason: THookSocketReason;
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const Value: String) of object;
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{:This procedural type is used for DataFilter hooks.}
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THookDataFilter = procedure(Sender: TObject; var Value: AnsiString) of object;
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{:This procedural type is used for hook OnCreateSocket. By this hook you can
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insert your code after initialisation of socket. (you can set special socket
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options, etc.)}
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THookCreateSocket = procedure(Sender: TObject) of object;
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{:This procedural type is used for monitoring of communication.}
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THookMonitor = procedure(Sender: TObject; Writing: Boolean;
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const Buffer: TMemory; Len: Integer) of object;
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{:This procedural type is used for hook OnAfterConnect. By this hook you can
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insert your code after TCP socket has been sucessfully connected.}
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THookAfterConnect = procedure(Sender: TObject) of object;
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{:This procedural type is used for hook OnVerifyCert. By this hook you can
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insert your additional certificate verification code. Usefull to verify server
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CN against URL. }
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THookVerifyCert = function(Sender: TObject):boolean of object;
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{:This procedural type is used for hook OnHeartbeat. By this hook you can
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call your code repeately during long socket operations.
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You must enable heartbeats by @Link(HeartbeatRate) property!}
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THookHeartbeat = procedure(Sender: TObject) of object;
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{:Specify family of socket.}
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TSocketFamily = (
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{:Default mode. Socket family is defined by target address for connection.
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It allows instant access to IPv4 and IPv6 nodes. When you need IPv6 address
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as destination, then is used IPv6 mode. othervise is used IPv4 mode.
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However this mode not working properly with preliminary IPv6 supports!}
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SF_Any,
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{:Turn this class to pure IPv4 mode. This mode is totally compatible with
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previous Synapse releases.}
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SF_IP4,
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{:Turn to only IPv6 mode.}
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SF_IP6
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);
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{:specify possible values of SOCKS modes.}
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TSocksType = (
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ST_Socks5,
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ST_Socks4
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);
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{:Specify requested SSL/TLS version for secure connection.}
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TSSLType = (
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LT_all,
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LT_SSLv2,
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LT_SSLv3,
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LT_TLSv1,
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LT_TLSv1_1,
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LT_SSHv2
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);
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{:Specify type of socket delayed option.}
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TSynaOptionType = (
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SOT_Linger,
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SOT_RecvBuff,
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SOT_SendBuff,
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SOT_NonBlock,
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SOT_RecvTimeout,
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SOT_SendTimeout,
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SOT_Reuse,
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SOT_TTL,
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SOT_Broadcast,
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SOT_MulticastTTL,
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SOT_MulticastLoop
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);
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{:@abstract(this object is used for remember delayed socket option set.)}
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TSynaOption = class(TObject)
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public
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Option: TSynaOptionType;
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Enabled: Boolean;
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Value: Integer;
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end;
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TCustomSSL = class;
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TSSLClass = class of TCustomSSL;
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{:@abstract(Basic IP object.)
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This is parent class for other class with protocol implementations. Do not
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use this class directly! Use @link(TICMPBlockSocket), @link(TRAWBlockSocket),
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@link(TTCPBlockSocket) or @link(TUDPBlockSocket) instead.}
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TBlockSocket = class(TObject)
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private
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FOnStatus: THookSocketStatus;
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FOnReadFilter: THookDataFilter;
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FOnCreateSocket: THookCreateSocket;
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FOnMonitor: THookMonitor;
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FOnHeartbeat: THookHeartbeat;
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FLocalSin: TVarSin;
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FRemoteSin: TVarSin;
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FTag: integer;
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FBuffer: AnsiString;
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FRaiseExcept: Boolean;
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FNonBlockMode: Boolean;
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FMaxLineLength: Integer;
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FMaxSendBandwidth: Integer;
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FNextSend: LongWord;
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FMaxRecvBandwidth: Integer;
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FNextRecv: LongWord;
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FConvertLineEnd: Boolean;
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FLastCR: Boolean;
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FLastLF: Boolean;
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FBinded: Boolean;
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FFamily: TSocketFamily;
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FFamilySave: TSocketFamily;
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FIP6used: Boolean;
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FPreferIP4: Boolean;
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FDelayedOptions: TList;
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FInterPacketTimeout: Boolean;
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{$IFNDEF CIL}
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FFDSet: TFDSet;
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{$ENDIF}
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FRecvCounter: Integer;
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FSendCounter: Integer;
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FSendMaxChunk: Integer;
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FStopFlag: Boolean;
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FNonblockSendTimeout: Integer;
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FHeartbeatRate: integer;
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{$IFNDEF ONCEWINSOCK}
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FWsaDataOnce: TWSADATA;
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{$ENDIF}
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function GetSizeRecvBuffer: Integer;
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procedure SetSizeRecvBuffer(Size: Integer);
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function GetSizeSendBuffer: Integer;
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procedure SetSizeSendBuffer(Size: Integer);
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procedure SetNonBlockMode(Value: Boolean);
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procedure SetTTL(TTL: integer);
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function GetTTL:integer;
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procedure SetFamily(Value: TSocketFamily); virtual;
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procedure SetSocket(Value: TSocket); virtual;
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function GetWsaData: TWSAData;
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function FamilyToAF(f: TSocketFamily): TAddrFamily;
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protected
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FSocket: TSocket;
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FLastError: Integer;
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FLastErrorDesc: string;
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FOwner: TObject;
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procedure SetDelayedOption(const Value: TSynaOption);
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procedure DelayedOption(const Value: TSynaOption);
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procedure ProcessDelayedOptions;
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procedure InternalCreateSocket(Sin: TVarSin);
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procedure SetSin(var Sin: TVarSin; IP, Port: string);
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function GetSinIP(Sin: TVarSin): string;
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function GetSinPort(Sin: TVarSin): Integer;
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procedure DoStatus(Reason: THookSocketReason; const Value: string);
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procedure DoReadFilter(Buffer: TMemory; var Len: Integer);
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procedure DoMonitor(Writing: Boolean; const Buffer: TMemory; Len: Integer);
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procedure DoCreateSocket;
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procedure DoHeartbeat;
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procedure LimitBandwidth(Length: Integer; MaxB: integer; var Next: LongWord);
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procedure SetBandwidth(Value: Integer);
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function TestStopFlag: Boolean;
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procedure InternalSendStream(const Stream: TStream; WithSize, Indy: boolean); virtual;
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function InternalCanRead(Timeout: Integer): Boolean; virtual;
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public
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constructor Create;
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{:Create object and load all necessary socket library. What library is
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loaded is described by STUB parameter. If STUB is empty string, then is
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loaded default libraries.}
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constructor CreateAlternate(Stub: string);
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destructor Destroy; override;
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{:If @link(family) is not SF_Any, then create socket with type defined in
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@link(Family) property. If family is SF_Any, then do nothing! (socket is
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created automaticly when you know what type of socket you need to create.
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(i.e. inside @link(Connect) or @link(Bind) call.) When socket is created,
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then is aplyed all stored delayed socket options.}
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procedure CreateSocket;
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{:It create socket. Address resolving of Value tells what type of socket is
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created. If Value is resolved as IPv4 IP, then is created IPv4 socket. If
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value is resolved as IPv6 address, then is created IPv6 socket.}
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procedure CreateSocketByName(const Value: String);
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{:Destroy socket in use. This method is also automatically called from
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object destructor.}
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procedure CloseSocket; virtual;
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{:Abort any work on Socket and destroy them.}
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procedure AbortSocket; virtual;
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{:Connects socket to local IP address and PORT. IP address may be numeric or
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symbolic ('192.168.74.50', 'cosi.nekde.cz', 'ff08::1'). The same for PORT
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- it may be number or mnemonic port ('23', 'telnet').
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If port value is '0', system chooses itself and conects unused port in the
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range 1024 to 4096 (this depending by operating system!). Structure
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LocalSin is filled after calling this method.
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Note: If you call this on non-created socket, then socket is created
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automaticly.
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Warning: when you call : Bind('0.0.0.0','0'); then is nothing done! In this
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case is used implicit system bind instead.}
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procedure Bind(IP, Port: string);
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{:Connects socket to remote IP address and PORT. The same rules as with
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@link(BIND) method are valid. The only exception is that PORT with 0 value
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will not be connected!
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Structures LocalSin and RemoteSin will be filled with valid values.
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When you call this on non-created socket, then socket is created
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automaticly. Type of created socket is by @link(Family) property. If is
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used SF_IP4, then is created socket for IPv4. If is used SF_IP6, then is
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created socket for IPv6. When you have family on SF_Any (default!), then
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type of created socket is determined by address resolving of destination
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address. (Not work properly on prilimitary winsock IPv6 support!)}
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procedure Connect(IP, Port: string); virtual;
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{:Sets socket to receive mode for new incoming connections. It is necessary
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to use @link(TBlockSocket.BIND) function call before this method to select
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receiving port!}
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procedure Listen; virtual;
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{:Waits until new incoming connection comes. After it comes a new socket is
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automatically created (socket handler is returned by this function as
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result).}
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function Accept: TSocket; virtual;
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{:Sends data of LENGTH from BUFFER address via connected socket. System
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automatically splits data to packets.}
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function SendBuffer(Buffer: Tmemory; Length: Integer): Integer; virtual;
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{:One data BYTE is sent via connected socket.}
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procedure SendByte(Data: Byte); virtual;
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{:Send data string via connected socket. Any terminator is not added! If you
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need send true string with CR-LF termination, you must add CR-LF characters
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to sended string! Because any termination is not added automaticly, you can
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use this function for sending any binary data in binary string.}
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procedure SendString(Data: AnsiString); virtual;
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{:Send integer as four bytes to socket.}
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procedure SendInteger(Data: integer); virtual;
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{:Send data as one block to socket. Each block begin with 4 bytes with
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length of data in block. This 4 bytes is added automaticly by this
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function.}
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procedure SendBlock(const Data: AnsiString); virtual;
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{:Send data from stream to socket.}
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procedure SendStreamRaw(const Stream: TStream); virtual;
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{:Send content of stream to socket. It using @link(SendBlock) method}
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procedure SendStream(const Stream: TStream); virtual;
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{:Send content of stream to socket. It using @link(SendBlock) method and
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this is compatible with streams in Indy library.}
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procedure SendStreamIndy(const Stream: TStream); virtual;
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{:Note: This is low-level receive function. You must be sure if data is
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waiting for read before call this function for avoid deadlock!
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Waits until allocated buffer is filled by received data. Returns number of
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data received, which equals to LENGTH value under normal operation. If it
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is not equal the communication channel is possibly broken.
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On stream oriented sockets if is received 0 bytes, it mean 'socket is
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closed!"
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On datagram socket is readed first waiting datagram.}
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function RecvBuffer(Buffer: TMemory; Length: Integer): Integer; virtual;
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{:Note: This is high-level receive function. It using internal
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@link(LineBuffer) and you can combine this function freely with other
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high-level functions!
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Method waits until data is received. If no data is received within TIMEOUT
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(in milliseconds) period, @link(LastError) is set to WSAETIMEDOUT. Methods
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serves for reading any size of data (i.e. one megabyte...). This method is
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preffered for reading from stream sockets (like TCP).}
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function RecvBufferEx(Buffer: Tmemory; Len: Integer;
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Timeout: Integer): Integer; virtual;
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{:Similar to @link(RecvBufferEx), but readed data is stored in binary
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string, not in memory buffer.}
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function RecvBufferStr(Len: Integer; Timeout: Integer): AnsiString; virtual;
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{:Note: This is high-level receive function. It using internal
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@link(LineBuffer) and you can combine this function freely with other
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high-level functions.
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Waits until one data byte is received which is also returned as function
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result. If no data is received within TIMEOUT (in milliseconds)period,
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@link(LastError) is set to WSAETIMEDOUT and result have value 0.}
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function RecvByte(Timeout: Integer): Byte; virtual;
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{:Note: This is high-level receive function. It using internal
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@link(LineBuffer) and you can combine this function freely with other
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high-level functions.
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Waits until one four bytes are received and return it as one Ineger Value.
|
|
If no data is received within TIMEOUT (in milliseconds)period,
|
|
@link(LastError) is set to WSAETIMEDOUT and result have value 0.}
|
|
function RecvInteger(Timeout: Integer): Integer; virtual;
|
|
|
|
{:Note: This is high-level receive function. It using internal
|
|
@link(LineBuffer) and you can combine this function freely with other
|
|
high-level functions.
|
|
|
|
Method waits until data string is received. This string is terminated by
|
|
CR-LF characters. The resulting string is returned without this termination
|
|
(CR-LF)! If @link(ConvertLineEnd) is used, then CR-LF sequence may not be
|
|
exactly CR-LF. See @link(ConvertLineEnd) description. If no data is
|
|
received within TIMEOUT (in milliseconds) period, @link(LastError) is set
|
|
to WSAETIMEDOUT. You may also specify maximum length of reading data by
|
|
@link(MaxLineLength) property.}
|
|
function RecvString(Timeout: Integer): AnsiString; virtual;
|
|
|
|
{:Note: This is high-level receive function. It using internal
|
|
@link(LineBuffer) and you can combine this function freely with other
|
|
high-level functions.
|
|
|
|
Method waits until data string is received. This string is terminated by
|
|
Terminator string. The resulting string is returned without this
|
|
termination. If no data is received within TIMEOUT (in milliseconds)
|
|
period, @link(LastError) is set to WSAETIMEDOUT. You may also specify
|
|
maximum length of reading data by @link(MaxLineLength) property.}
|
|
function RecvTerminated(Timeout: Integer; const Terminator: AnsiString): AnsiString; virtual;
|
|
|
|
{:Note: This is high-level receive function. It using internal
|
|
@link(LineBuffer) and you can combine this function freely with other
|
|
high-level functions.
|
|
|
|
Method reads all data waiting for read. If no data is received within
|
|
TIMEOUT (in milliseconds) period, @link(LastError) is set to WSAETIMEDOUT.
|
|
Methods serves for reading unknown size of data. Because before call this
|
|
function you don't know size of received data, returned data is stored in
|
|
dynamic size binary string. This method is preffered for reading from
|
|
stream sockets (like TCP). It is very goot for receiving datagrams too!
|
|
(UDP protocol)}
|
|
function RecvPacket(Timeout: Integer): AnsiString; virtual;
|
|
|
|
{:Read one block of data from socket. Each block begin with 4 bytes with
|
|
length of data in block. This function read first 4 bytes for get lenght,
|
|
then it wait for reported count of bytes.}
|
|
function RecvBlock(Timeout: Integer): AnsiString; virtual;
|
|
|
|
{:Read all data from socket to stream until socket is closed (or any error
|
|
occured.)}
|
|
procedure RecvStreamRaw(const Stream: TStream; Timeout: Integer); virtual;
|
|
{:Read requested count of bytes from socket to stream.}
|
|
procedure RecvStreamSize(const Stream: TStream; Timeout: Integer; Size: Integer);
|
|
|
|
{:Receive data to stream. It using @link(RecvBlock) method.}
|
|
procedure RecvStream(const Stream: TStream; Timeout: Integer); virtual;
|
|
|
|
{:Receive data to stream. This function is compatible with similar function
|
|
in Indy library. It using @link(RecvBlock) method.}
|
|
procedure RecvStreamIndy(const Stream: TStream; Timeout: Integer); virtual;
|
|
|
|
{:Same as @link(RecvBuffer), but readed data stays in system input buffer.
|
|
Warning: this function not respect data in @link(LineBuffer)! Is not
|
|
recommended to use this function!}
|
|
function PeekBuffer(Buffer: TMemory; Length: Integer): Integer; virtual;
|
|
|
|
{:Same as @link(RecvByte), but readed data stays in input system buffer.
|
|
Warning: this function not respect data in @link(LineBuffer)! Is not
|
|
recommended to use this function!}
|
|
function PeekByte(Timeout: Integer): Byte; virtual;
|
|
|
|
{:On stream sockets it returns number of received bytes waiting for picking.
|
|
0 is returned when there is no such data. On datagram socket it returns
|
|
length of the first waiting datagram. Returns 0 if no datagram is waiting.}
|
|
function WaitingData: Integer; virtual;
|
|
|
|
{:Same as @link(WaitingData), but if exists some of data in @link(Linebuffer),
|
|
return their length instead.}
|
|
function WaitingDataEx: Integer;
|
|
|
|
{:Clear all waiting data for read from buffers.}
|
|
procedure Purge;
|
|
|
|
{:Sets linger. Enabled linger means that the system waits another LINGER
|
|
(in milliseconds) time for delivery of sent data. This function is only for
|
|
stream type of socket! (TCP)}
|
|
procedure SetLinger(Enable: Boolean; Linger: Integer);
|
|
|
|
{:Actualize values in @link(LocalSin).}
|
|
procedure GetSinLocal;
|
|
|
|
{:Actualize values in @link(RemoteSin).}
|
|
procedure GetSinRemote;
|
|
|
|
{:Actualize values in @link(LocalSin) and @link(RemoteSin).}
|
|
procedure GetSins;
|
|
|
|
{:Reset @link(LastError) and @link(LastErrorDesc) to non-error state.}
|
|
procedure ResetLastError;
|
|
|
|
{:If you "manually" call Socket API functions, forward their return code as
|
|
parameter to this function, which evaluates it, eventually calls
|
|
GetLastError and found error code returns and stores to @link(LastError).}
|
|
function SockCheck(SockResult: Integer): Integer; virtual;
|
|
|
|
{:If @link(LastError) contains some error code and @link(RaiseExcept)
|
|
property is @true, raise adequate exception.}
|
|
procedure ExceptCheck;
|
|
|
|
{:Returns local computer name as numerical or symbolic value. It try get
|
|
fully qualified domain name. Name is returned in the format acceptable by
|
|
functions demanding IP as input parameter.}
|
|
function LocalName: string;
|
|
|
|
{:Try resolve name to all possible IP address. i.e. If you pass as name
|
|
result of @link(LocalName) method, you get all IP addresses used by local
|
|
system.}
|
|
procedure ResolveNameToIP(Name: string; const IPList: TStrings);
|
|
|
|
{:Try resolve name to primary IP address. i.e. If you pass as name result of
|
|
@link(LocalName) method, you get primary IP addresses used by local system.}
|
|
function ResolveName(Name: string): string;
|
|
|
|
{:Try resolve IP to their primary domain name. If IP not have domain name,
|
|
then is returned original IP.}
|
|
function ResolveIPToName(IP: string): string;
|
|
|
|
{:Try resolve symbolic port name to port number. (i.e. 'Echo' to 8)}
|
|
function ResolvePort(Port: string): Word;
|
|
|
|
{:Set information about remote side socket. It is good for seting remote
|
|
side for sending UDP packet, etc.}
|
|
procedure SetRemoteSin(IP, Port: string);
|
|
|
|
{:Picks IP socket address from @link(LocalSin).}
|
|
function GetLocalSinIP: string; virtual;
|
|
|
|
{:Picks IP socket address from @link(RemoteSin).}
|
|
function GetRemoteSinIP: string; virtual;
|
|
|
|
{:Picks socket PORT number from @link(LocalSin).}
|
|
function GetLocalSinPort: Integer; virtual;
|
|
|
|
{:Picks socket PORT number from @link(RemoteSin).}
|
|
function GetRemoteSinPort: Integer; virtual;
|
|
|
|
{:Return @TRUE, if you can read any data from socket or is incoming
|
|
connection on TCP based socket. Status is tested for time Timeout (in
|
|
milliseconds). If value in Timeout is 0, status is only tested and
|
|
continue. If value in Timeout is -1, run is breaked and waiting for read
|
|
data maybe forever.
|
|
|
|
This function is need only on special cases, when you need use
|
|
@link(RecvBuffer) function directly! read functioms what have timeout as
|
|
calling parameter, calling this function internally.}
|
|
function CanRead(Timeout: Integer): Boolean; virtual;
|
|
|
|
{:Same as @link(CanRead), but additionally return @TRUE if is some data in
|
|
@link(LineBuffer).}
|
|
function CanReadEx(Timeout: Integer): Boolean; virtual;
|
|
|
|
{:Return @TRUE, if you can to socket write any data (not full sending
|
|
buffer). Status is tested for time Timeout (in milliseconds). If value in
|
|
Timeout is 0, status is only tested and continue. If value in Timeout is
|
|
-1, run is breaked and waiting for write data maybe forever.
|
|
|
|
This function is need only on special cases!}
|
|
function CanWrite(Timeout: Integer): Boolean; virtual;
|
|
|
|
{:Same as @link(SendBuffer), but send datagram to address from
|
|
@link(RemoteSin). Usefull for sending reply to datagram received by
|
|
function @link(RecvBufferFrom).}
|
|
function SendBufferTo(Buffer: TMemory; Length: Integer): Integer; virtual;
|
|
|
|
{:Note: This is low-lever receive function. You must be sure if data is
|
|
waiting for read before call this function for avoid deadlock!
|
|
|
|
Receives first waiting datagram to allocated buffer. If there is no waiting
|
|
one, then waits until one comes. Returns length of datagram stored in
|
|
BUFFER. If length exceeds buffer datagram is truncated. After this
|
|
@link(RemoteSin) structure contains information about sender of UDP packet.}
|
|
function RecvBufferFrom(Buffer: TMemory; Length: Integer): Integer; virtual;
|
|
{$IFNDEF CIL}
|
|
{:This function is for check for incoming data on set of sockets. Whitch
|
|
sockets is checked is decribed by SocketList Tlist with TBlockSocket
|
|
objects. TList may have maximal number of objects defined by FD_SETSIZE
|
|
constant. Return @TRUE, if you can from some socket read any data or is
|
|
incoming connection on TCP based socket. Status is tested for time Timeout
|
|
(in milliseconds). If value in Timeout is 0, status is only tested and
|
|
continue. If value in Timeout is -1, run is breaked and waiting for read
|
|
data maybe forever. If is returned @TRUE, CanReadList TList is filled by all
|
|
TBlockSocket objects what waiting for read.}
|
|
function GroupCanRead(const SocketList: TList; Timeout: Integer;
|
|
const CanReadList: TList): Boolean;
|
|
{$ENDIF}
|
|
{:By this method you may turn address reuse mode for local @link(bind). It
|
|
is good specially for UDP protocol. Using this with TCP protocol is
|
|
hazardous!}
|
|
procedure EnableReuse(Value: Boolean);
|
|
|
|
{:Try set timeout for all sending and receiving operations, if socket
|
|
provider can do it. (It not supported by all socket providers!)}
|
|
procedure SetTimeout(Timeout: Integer);
|
|
|
|
{:Try set timeout for all sending operations, if socket provider can do it.
|
|
(It not supported by all socket providers!)}
|
|
procedure SetSendTimeout(Timeout: Integer);
|
|
|
|
{:Try set timeout for all receiving operations, if socket provider can do
|
|
it. (It not supported by all socket providers!)}
|
|
procedure SetRecvTimeout(Timeout: Integer);
|
|
|
|
{:Return value of socket type.}
|
|
function GetSocketType: integer; Virtual;
|
|
|
|
{:Return value of protocol type for socket creation.}
|
|
function GetSocketProtocol: integer; Virtual;
|
|
|
|
{:WSA structure with information about socket provider. On non-windows
|
|
platforms this structure is simulated!}
|
|
property WSAData: TWSADATA read GetWsaData;
|
|
|
|
{:FDset structure prepared for usage with this socket.}
|
|
property FDset: TFDSet read FFDset;
|
|
|
|
{:Structure describing local socket side.}
|
|
property LocalSin: TVarSin read FLocalSin write FLocalSin;
|
|
|
|
{:Structure describing remote socket side.}
|
|
property RemoteSin: TVarSin read FRemoteSin write FRemoteSin;
|
|
|
|
{:Socket handler. Suitable for "manual" calls to socket API or manual
|
|
connection of socket to a previously created socket (i.e by Accept method
|
|
on TCP socket)}
|
|
property Socket: TSocket read FSocket write SetSocket;
|
|
|
|
{:Last socket operation error code. Error codes are described in socket
|
|
documentation. Human readable error description is stored in
|
|
@link(LastErrorDesc) property.}
|
|
property LastError: Integer read FLastError;
|
|
|
|
{:Human readable error description of @link(LastError) code.}
|
|
property LastErrorDesc: string read FLastErrorDesc;
|
|
|
|
{:Buffer used by all high-level receiving functions. This buffer is used for
|
|
optimized reading of data from socket. In normal cases you not need access
|
|
to this buffer directly!}
|
|
property LineBuffer: AnsiString read FBuffer write FBuffer;
|
|
|
|
{:Size of Winsock receive buffer. If it is not supported by socket provider,
|
|
it return as size one kilobyte.}
|
|
property SizeRecvBuffer: Integer read GetSizeRecvBuffer write SetSizeRecvBuffer;
|
|
|
|
{:Size of Winsock send buffer. If it is not supported by socket provider, it
|
|
return as size one kilobyte.}
|
|
property SizeSendBuffer: Integer read GetSizeSendBuffer write SetSizeSendBuffer;
|
|
|
|
{:If @True, turn class to non-blocking mode. Not all functions are working
|
|
properly in this mode, you must know exactly what you are doing! However
|
|
when you have big experience with non-blocking programming, then you can
|
|
optimise your program by non-block mode!}
|
|
property NonBlockMode: Boolean read FNonBlockMode Write SetNonBlockMode;
|
|
|
|
{:Set Time-to-live value. (if system supporting it!)}
|
|
property TTL: Integer read GetTTL Write SetTTL;
|
|
|
|
{:If is @true, then class in in IPv6 mode.}
|
|
property IP6used: Boolean read FIP6used;
|
|
|
|
{:Return count of received bytes on this socket from begin of current
|
|
connection.}
|
|
property RecvCounter: Integer read FRecvCounter;
|
|
|
|
{:Return count of sended bytes on this socket from begin of current
|
|
connection.}
|
|
property SendCounter: Integer read FSendCounter;
|
|
published
|
|
{:Return descriptive string for given error code. This is class function.
|
|
You may call it without created object!}
|
|
class function GetErrorDesc(ErrorCode: Integer): string;
|
|
|
|
{:Return descriptive string for @link(LastError).}
|
|
function GetErrorDescEx: string; virtual;
|
|
|
|
{:this value is for free use.}
|
|
property Tag: Integer read FTag write FTag;
|
|
|
|
{:If @true, winsock errors raises exception. Otherwise is setted
|
|
@link(LastError) value only and you must check it from your program! Default
|
|
value is @false.}
|
|
property RaiseExcept: Boolean read FRaiseExcept write FRaiseExcept;
|
|
|
|
{:Define maximum length in bytes of @link(LineBuffer) for high-level
|
|
receiving functions. If this functions try to read more data then this
|
|
limit, error is returned! If value is 0 (default), no limitation is used.
|
|
This is very good protection for stupid attacks to your server by sending
|
|
lot of data without proper terminator... until all your memory is allocated
|
|
by LineBuffer!
|
|
|
|
Note: This maximum length is checked only in functions, what read unknown
|
|
number of bytes! (like @link(RecvString) or @link(RecvTerminated))}
|
|
property MaxLineLength: Integer read FMaxLineLength Write FMaxLineLength;
|
|
|
|
{:Define maximal bandwidth for all sending operations in bytes per second.
|
|
If value is 0 (default), bandwidth limitation is not used.}
|
|
property MaxSendBandwidth: Integer read FMaxSendBandwidth Write FMaxSendBandwidth;
|
|
|
|
{:Define maximal bandwidth for all receiving operations in bytes per second.
|
|
If value is 0 (default), bandwidth limitation is not used.}
|
|
property MaxRecvBandwidth: Integer read FMaxRecvBandwidth Write FMaxRecvBandwidth;
|
|
|
|
{:Define maximal bandwidth for all sending and receiving operations in bytes
|
|
per second. If value is 0 (default), bandwidth limitation is not used.}
|
|
property MaxBandwidth: Integer Write SetBandwidth;
|
|
|
|
{:Do a conversion of non-standard line terminators to CRLF. (Off by default)
|
|
If @True, then terminators like sigle CR, single LF or LFCR are converted
|
|
to CRLF internally. This have effect only in @link(RecvString) method!}
|
|
property ConvertLineEnd: Boolean read FConvertLineEnd Write FConvertLineEnd;
|
|
|
|
{:Specified Family of this socket. When you are using Windows preliminary
|
|
support for IPv6, then I recommend to set this property!}
|
|
property Family: TSocketFamily read FFamily Write SetFamily;
|
|
|
|
{:When resolving of domain name return both IPv4 and IPv6 addresses, then
|
|
specify if is used IPv4 (dafault - @true) or IPv6.}
|
|
property PreferIP4: Boolean read FPreferIP4 Write FPreferIP4;
|
|
|
|
{:By default (@true) is all timeouts used as timeout between two packets in
|
|
reading operations. If you set this to @false, then Timeouts is for overall
|
|
reading operation!}
|
|
property InterPacketTimeout: Boolean read FInterPacketTimeout Write FInterPacketTimeout;
|
|
|
|
{:All sended datas was splitted by this value.}
|
|
property SendMaxChunk: Integer read FSendMaxChunk Write FSendMaxChunk;
|
|
|
|
{:By setting this property to @true you can stop any communication. You can
|
|
use this property for soft abort of communication.}
|
|
property StopFlag: Boolean read FStopFlag Write FStopFlag;
|
|
|
|
{:Timeout for data sending by non-blocking socket mode.}
|
|
property NonblockSendTimeout: Integer read FNonblockSendTimeout Write FNonblockSendTimeout;
|
|
|
|
{:This event is called by various reasons. It is good for monitoring socket,
|
|
create gauges for data transfers, etc.}
|
|
property OnStatus: THookSocketStatus read FOnStatus write FOnStatus;
|
|
|
|
{:this event is good for some internal thinks about filtering readed datas.
|
|
It is used by telnet client by example.}
|
|
property OnReadFilter: THookDataFilter read FOnReadFilter write FOnReadFilter;
|
|
|
|
{:This event is called after real socket creation for setting special socket
|
|
options, because you not know when socket is created. (it is depended on
|
|
Ipv4, IPv6 or automatic mode)}
|
|
property OnCreateSocket: THookCreateSocket read FOnCreateSocket write FOnCreateSocket;
|
|
|
|
{:This event is good for monitoring content of readed or writed datas.}
|
|
property OnMonitor: THookMonitor read FOnMonitor write FOnMonitor;
|
|
|
|
{:This event is good for calling your code during long socket operations.
|
|
(Example, for refresing UI if class in not called within the thread.)
|
|
Rate of heartbeats can be modified by @link(HeartbeatRate) property.}
|
|
property OnHeartbeat: THookHeartbeat read FOnHeartbeat write FOnHeartbeat;
|
|
|
|
{:Specify typical rate of @link(OnHeartbeat) event and @link(StopFlag) testing.
|
|
Default value 0 disabling heartbeats! Value is in milliseconds.
|
|
Real rate can be higher or smaller then this value, because it depending
|
|
on real socket operations too!
|
|
Note: Each heartbeat slowing socket processing.}
|
|
property HeartbeatRate: integer read FHeartbeatRate Write FHeartbeatRate;
|
|
{:What class own this socket? Used by protocol implementation classes.}
|
|
property Owner: TObject read FOwner Write FOwner;
|
|
end;
|
|
|
|
{:@abstract(Support for SOCKS4 and SOCKS5 proxy)
|
|
Layer with definition all necessary properties and functions for
|
|
implementation SOCKS proxy client. Do not use this class directly.}
|
|
TSocksBlockSocket = class(TBlockSocket)
|
|
protected
|
|
FSocksIP: string;
|
|
FSocksPort: string;
|
|
FSocksTimeout: integer;
|
|
FSocksUsername: string;
|
|
FSocksPassword: string;
|
|
FUsingSocks: Boolean;
|
|
FSocksResolver: Boolean;
|
|
FSocksLastError: integer;
|
|
FSocksResponseIP: string;
|
|
FSocksResponsePort: string;
|
|
FSocksLocalIP: string;
|
|
FSocksLocalPort: string;
|
|
FSocksRemoteIP: string;
|
|
FSocksRemotePort: string;
|
|
FBypassFlag: Boolean;
|
|
FSocksType: TSocksType;
|
|
function SocksCode(IP, Port: string): Ansistring;
|
|
function SocksDecode(Value: Ansistring): integer;
|
|
public
|
|
constructor Create;
|
|
|
|
{:Open connection to SOCKS proxy and if @link(SocksUsername) is set, do
|
|
authorisation to proxy. This is needed only in special cases! (it is called
|
|
internally!)}
|
|
function SocksOpen: Boolean;
|
|
|
|
{:Send specified request to SOCKS proxy. This is needed only in special
|
|
cases! (it is called internally!)}
|
|
function SocksRequest(Cmd: Byte; const IP, Port: string): Boolean;
|
|
|
|
{:Receive response to previosly sended request. This is needed only in
|
|
special cases! (it is called internally!)}
|
|
function SocksResponse: Boolean;
|
|
|
|
{:Is @True when class is using SOCKS proxy.}
|
|
property UsingSocks: Boolean read FUsingSocks;
|
|
|
|
{:If SOCKS proxy failed, here is error code returned from SOCKS proxy.}
|
|
property SocksLastError: integer read FSocksLastError;
|
|
published
|
|
{:Address of SOCKS server. If value is empty string, SOCKS support is
|
|
disabled. Assingning any value to this property enable SOCKS mode.
|
|
Warning: You cannot combine this mode with HTTP-tunneling mode!}
|
|
property SocksIP: string read FSocksIP write FSocksIP;
|
|
|
|
{:Port of SOCKS server. Default value is '1080'.}
|
|
property SocksPort: string read FSocksPort write FSocksPort;
|
|
|
|
{:If you need authorisation on SOCKS server, set username here.}
|
|
property SocksUsername: string read FSocksUsername write FSocksUsername;
|
|
|
|
{:If you need authorisation on SOCKS server, set password here.}
|
|
property SocksPassword: string read FSocksPassword write FSocksPassword;
|
|
|
|
{:Specify timeout for communicatin with SOCKS server. Default is one minute.}
|
|
property SocksTimeout: integer read FSocksTimeout write FSocksTimeout;
|
|
|
|
{:If @True, all symbolic names of target hosts is not translated to IP's
|
|
locally, but resolving is by SOCKS proxy. Default is @True.}
|
|
property SocksResolver: Boolean read FSocksResolver write FSocksResolver;
|
|
|
|
{:Specify SOCKS type. By default is used SOCKS5, but you can use SOCKS4 too.
|
|
When you select SOCKS4, then if @link(SOCKSResolver) is enabled, then is
|
|
used SOCKS4a. Othervise is used pure SOCKS4.}
|
|
property SocksType: TSocksType read FSocksType write FSocksType;
|
|
end;
|
|
|
|
{:@abstract(Implementation of TCP socket.)
|
|
Supported features: IPv4, IPv6, SSL/TLS or SSH (depending on used plugin),
|
|
SOCKS5 proxy (outgoing connections and limited incomming), SOCKS4/4a proxy
|
|
(outgoing connections and limited incomming), TCP through HTTP proxy tunnel.}
|
|
TTCPBlockSocket = class(TSocksBlockSocket)
|
|
protected
|
|
FOnAfterConnect: THookAfterConnect;
|
|
FSSL: TCustomSSL;
|
|
FHTTPTunnelIP: string;
|
|
FHTTPTunnelPort: string;
|
|
FHTTPTunnel: Boolean;
|
|
FHTTPTunnelRemoteIP: string;
|
|
FHTTPTunnelRemotePort: string;
|
|
FHTTPTunnelUser: string;
|
|
FHTTPTunnelPass: string;
|
|
FHTTPTunnelTimeout: integer;
|
|
procedure SocksDoConnect(IP, Port: string);
|
|
procedure HTTPTunnelDoConnect(IP, Port: string);
|
|
procedure DoAfterConnect;
|
|
public
|
|
{:Create TCP socket class with default plugin for SSL/TSL/SSH implementation
|
|
(see @link(SSLImplementation))}
|
|
constructor Create;
|
|
|
|
{:Create TCP socket class with desired plugin for SSL/TSL/SSH implementation}
|
|
constructor CreateWithSSL(SSLPlugin: TSSLClass);
|
|
destructor Destroy; override;
|
|
|
|
{:See @link(TBlockSocket.CloseSocket)}
|
|
procedure CloseSocket; override;
|
|
|
|
{:See @link(TBlockSocket.WaitingData)}
|
|
function WaitingData: Integer; override;
|
|
|
|
{:Sets socket to receive mode for new incoming connections. It is necessary
|
|
to use @link(TBlockSocket.BIND) function call before this method to select
|
|
receiving port!
|
|
|
|
If you use SOCKS, activate incoming TCP connection by this proxy. (By BIND
|
|
method of SOCKS.)}
|
|
procedure Listen; override;
|
|
|
|
{:Waits until new incoming connection comes. After it comes a new socket is
|
|
automatically created (socket handler is returned by this function as
|
|
result).
|
|
|
|
If you use SOCKS, new socket is not created! In this case is used same
|
|
socket as socket for listening! So, you can accept only one connection in
|
|
SOCKS mode.}
|
|
function Accept: TSocket; override;
|
|
|
|
{:Connects socket to remote IP address and PORT. The same rules as with
|
|
@link(TBlockSocket.BIND) method are valid. The only exception is that PORT
|
|
with 0 value will not be connected. After call to this method
|
|
a communication channel between local and remote socket is created. Local
|
|
socket is assigned automatically if not controlled by previous call to
|
|
@link(TBlockSocket.BIND) method. Structures @link(TBlockSocket.LocalSin)
|
|
and @link(TBlockSocket.RemoteSin) will be filled with valid values.
|
|
|
|
If you use SOCKS, activate outgoing TCP connection by SOCKS proxy specified
|
|
in @link(TSocksBlockSocket.SocksIP). (By CONNECT method of SOCKS.)
|
|
|
|
If you use HTTP-tunnel mode, activate outgoing TCP connection by HTTP
|
|
tunnel specified in @link(HTTPTunnelIP). (By CONNECT method of HTTP
|
|
protocol.)
|
|
|
|
Note: If you call this on non-created socket, then socket is created
|
|
automaticly.}
|
|
procedure Connect(IP, Port: string); override;
|
|
|
|
{:If you need upgrade existing TCP connection to SSL/TLS (or SSH2, if plugin
|
|
allows it) mode, then call this method. This method switch this class to
|
|
SSL mode and do SSL/TSL handshake.}
|
|
procedure SSLDoConnect;
|
|
|
|
{:By this method you can downgrade existing SSL/TLS connection to normal TCP
|
|
connection.}
|
|
procedure SSLDoShutdown;
|
|
|
|
{:If you need use this component as SSL/TLS TCP server, then after accepting
|
|
of inbound connection you need start SSL/TLS session by this method. Before
|
|
call this function, you must have assigned all neeeded certificates and
|
|
keys!}
|
|
function SSLAcceptConnection: Boolean;
|
|
|
|
{:See @link(TBlockSocket.GetLocalSinIP)}
|
|
function GetLocalSinIP: string; override;
|
|
|
|
{:See @link(TBlockSocket.GetRemoteSinIP)}
|
|
function GetRemoteSinIP: string; override;
|
|
|
|
{:See @link(TBlockSocket.GetLocalSinPort)}
|
|
function GetLocalSinPort: Integer; override;
|
|
|
|
{:See @link(TBlockSocket.GetRemoteSinPort)}
|
|
function GetRemoteSinPort: Integer; override;
|
|
|
|
{:See @link(TBlockSocket.SendBuffer)}
|
|
function SendBuffer(Buffer: TMemory; Length: Integer): Integer; override;
|
|
|
|
{:See @link(TBlockSocket.RecvBuffer)}
|
|
function RecvBuffer(Buffer: TMemory; Len: Integer): Integer; override;
|
|
|
|
{:Return value of socket type. For TCP return SOCK_STREAM.}
|
|
function GetSocketType: integer; override;
|
|
|
|
{:Return value of protocol type for socket creation. For TCP return
|
|
IPPROTO_TCP.}
|
|
function GetSocketProtocol: integer; override;
|
|
|
|
{:Class implementing SSL/TLS support. It is allways some descendant
|
|
of @link(TCustomSSL) class. When programmer not select some SSL plugin
|
|
class, then is used @link(TSSLNone)}
|
|
property SSL: TCustomSSL read FSSL;
|
|
|
|
{:@True if is used HTTP tunnel mode.}
|
|
property HTTPTunnel: Boolean read FHTTPTunnel;
|
|
published
|
|
{:Return descriptive string for @link(LastError). On case of error
|
|
in SSL/TLS subsystem, it returns right error description.}
|
|
function GetErrorDescEx: string; override;
|
|
|
|
{:Specify IP address of HTTP proxy. Assingning non-empty value to this
|
|
property enable HTTP-tunnel mode. This mode is for tunnelling any outgoing
|
|
TCP connection through HTTP proxy server. (If policy on HTTP proxy server
|
|
allow this!) Warning: You cannot combine this mode with SOCK5 mode!}
|
|
property HTTPTunnelIP: string read FHTTPTunnelIP Write FHTTPTunnelIP;
|
|
|
|
{:Specify port of HTTP proxy for HTTP-tunneling.}
|
|
property HTTPTunnelPort: string read FHTTPTunnelPort Write FHTTPTunnelPort;
|
|
|
|
{:Specify authorisation username for access to HTTP proxy in HTTP-tunnel
|
|
mode. If you not need authorisation, then let this property empty.}
|
|
property HTTPTunnelUser: string read FHTTPTunnelUser Write FHTTPTunnelUser;
|
|
|
|
{:Specify authorisation password for access to HTTP proxy in HTTP-tunnel
|
|
mode.}
|
|
property HTTPTunnelPass: string read FHTTPTunnelPass Write FHTTPTunnelPass;
|
|
|
|
{:Specify timeout for communication with HTTP proxy in HTTPtunnel mode.}
|
|
property HTTPTunnelTimeout: integer read FHTTPTunnelTimeout Write FHTTPTunnelTimeout;
|
|
|
|
{:This event is called after sucessful TCP socket connection.}
|
|
property OnAfterConnect: THookAfterConnect read FOnAfterConnect write FOnAfterConnect;
|
|
end;
|
|
|
|
{:@abstract(Datagram based communication)
|
|
This class implementing datagram based communication instead default stream
|
|
based communication style.}
|
|
TDgramBlockSocket = class(TSocksBlockSocket)
|
|
public
|
|
{:Fill @link(TBlockSocket.RemoteSin) structure. This address is used for
|
|
sending data.}
|
|
procedure Connect(IP, Port: string); override;
|
|
|
|
{:Silently redirected to @link(TBlockSocket.SendBufferTo).}
|
|
function SendBuffer(Buffer: TMemory; Length: Integer): Integer; override;
|
|
|
|
{:Silently redirected to @link(TBlockSocket.RecvBufferFrom).}
|
|
function RecvBuffer(Buffer: TMemory; Length: Integer): Integer; override;
|
|
end;
|
|
|
|
{:@abstract(Implementation of UDP socket.)
|
|
NOTE: in this class is all receiving redirected to RecvBufferFrom. You can
|
|
use for reading any receive function. Preffered is RecvPacket! Similary all
|
|
sending is redirected to SendbufferTo. You can use for sending UDP packet any
|
|
sending function, like SendString.
|
|
|
|
Supported features: IPv4, IPv6, unicasts, broadcasts, multicasts, SOCKS5
|
|
proxy (only unicasts! Outgoing and incomming.)}
|
|
TUDPBlockSocket = class(TDgramBlockSocket)
|
|
protected
|
|
FSocksControlSock: TTCPBlockSocket;
|
|
function UdpAssociation: Boolean;
|
|
procedure SetMulticastTTL(TTL: integer);
|
|
function GetMulticastTTL:integer;
|
|
public
|
|
destructor Destroy; override;
|
|
|
|
{:Enable or disable sending of broadcasts. If seting OK, result is @true.
|
|
This method is not supported in SOCKS5 mode! IPv6 does not support
|
|
broadcasts! In this case you must use Multicasts instead.}
|
|
procedure EnableBroadcast(Value: Boolean);
|
|
|
|
{:See @link(TBlockSocket.SendBufferTo)}
|
|
function SendBufferTo(Buffer: TMemory; Length: Integer): Integer; override;
|
|
|
|
{:See @link(TBlockSocket.RecvBufferFrom)}
|
|
function RecvBufferFrom(Buffer: TMemory; Length: Integer): Integer; override;
|
|
{$IFNDEF CIL}
|
|
{:Add this socket to given multicast group. You cannot use Multicasts in
|
|
SOCKS mode!}
|
|
procedure AddMulticast(MCastIP:string);
|
|
|
|
{:Remove this socket from given multicast group.}
|
|
procedure DropMulticast(MCastIP:string);
|
|
{$ENDIF}
|
|
{:All sended multicast datagrams is loopbacked to your interface too. (you
|
|
can read your sended datas.) You can disable this feature by this function.
|
|
This function not working on some Windows systems!}
|
|
procedure EnableMulticastLoop(Value: Boolean);
|
|
|
|
{:Return value of socket type. For UDP return SOCK_DGRAM.}
|
|
function GetSocketType: integer; override;
|
|
|
|
{:Return value of protocol type for socket creation. For UDP return
|
|
IPPROTO_UDP.}
|
|
function GetSocketProtocol: integer; override;
|
|
|
|
{:Set Time-to-live value for multicasts packets. It define number of routers
|
|
for transfer of datas. If you set this to 1 (dafault system value), then
|
|
multicasts packet goes only to you local network. If you need transport
|
|
multicast packet to worldwide, then increase this value, but be carefull,
|
|
lot of routers on internet does not transport multicasts packets!}
|
|
property MulticastTTL: Integer read GetMulticastTTL Write SetMulticastTTL;
|
|
end;
|
|
|
|
{:@abstract(Implementation of RAW ICMP socket.)
|
|
For this object you must have rights for creating RAW sockets!}
|
|
TICMPBlockSocket = class(TDgramBlockSocket)
|
|
public
|
|
{:Return value of socket type. For RAW and ICMP return SOCK_RAW.}
|
|
function GetSocketType: integer; override;
|
|
|
|
{:Return value of protocol type for socket creation. For ICMP returns
|
|
IPPROTO_ICMP or IPPROTO_ICMPV6}
|
|
function GetSocketProtocol: integer; override;
|
|
end;
|
|
|
|
{:@abstract(Implementation of RAW socket.)
|
|
For this object you must have rights for creating RAW sockets!}
|
|
TRAWBlockSocket = class(TBlockSocket)
|
|
public
|
|
{:Return value of socket type. For RAW and ICMP return SOCK_RAW.}
|
|
function GetSocketType: integer; override;
|
|
|
|
{:Return value of protocol type for socket creation. For RAW returns
|
|
IPPROTO_RAW.}
|
|
function GetSocketProtocol: integer; override;
|
|
end;
|
|
|
|
{:@abstract(Implementation of PGM-message socket.)
|
|
Not all systems supports this protocol!}
|
|
TPGMMessageBlockSocket = class(TBlockSocket)
|
|
public
|
|
{:Return value of socket type. For PGM-message return SOCK_RDM.}
|
|
function GetSocketType: integer; override;
|
|
|
|
{:Return value of protocol type for socket creation. For PGM-message returns
|
|
IPPROTO_RM.}
|
|
function GetSocketProtocol: integer; override;
|
|
end;
|
|
|
|
{:@abstract(Implementation of PGM-stream socket.)
|
|
Not all systems supports this protocol!}
|
|
TPGMStreamBlockSocket = class(TBlockSocket)
|
|
public
|
|
{:Return value of socket type. For PGM-stream return SOCK_STREAM.}
|
|
function GetSocketType: integer; override;
|
|
|
|
{:Return value of protocol type for socket creation. For PGM-stream returns
|
|
IPPROTO_RM.}
|
|
function GetSocketProtocol: integer; override;
|
|
end;
|
|
|
|
{:@abstract(Parent class for all SSL plugins.)
|
|
This is abstract class defining interface for other SSL plugins.
|
|
|
|
Instance of this class will be created for each @link(TTCPBlockSocket).
|
|
|
|
Warning: not all methods and propertis can work in all existing SSL plugins!
|
|
Please, read documentation of used SSL plugin.}
|
|
TCustomSSL = class(TObject)
|
|
private
|
|
protected
|
|
FOnVerifyCert: THookVerifyCert;
|
|
FSocket: TTCPBlockSocket;
|
|
FSSLEnabled: Boolean;
|
|
FLastError: integer;
|
|
FLastErrorDesc: string;
|
|
FSSLType: TSSLType;
|
|
FKeyPassword: string;
|
|
FCiphers: string;
|
|
FCertificateFile: string;
|
|
FPrivateKeyFile: string;
|
|
FCertificate: Ansistring;
|
|
FPrivateKey: Ansistring;
|
|
FPFX: Ansistring;
|
|
FPFXfile: string;
|
|
FCertCA: Ansistring;
|
|
FCertCAFile: string;
|
|
FTrustCertificate: Ansistring;
|
|
FTrustCertificateFile: string;
|
|
FVerifyCert: Boolean;
|
|
FUsername: string;
|
|
FPassword: string;
|
|
FSSHChannelType: string;
|
|
FSSHChannelArg1: string;
|
|
FSSHChannelArg2: string;
|
|
FCertComplianceLevel: integer;
|
|
FSNIHost: string;
|
|
procedure ReturnError;
|
|
procedure SetCertCAFile(const Value: string); virtual;
|
|
function DoVerifyCert:boolean;
|
|
function CreateSelfSignedCert(Host: string): Boolean; virtual;
|
|
public
|
|
{: Create plugin class. it is called internally from @link(TTCPBlockSocket)}
|
|
constructor Create(const Value: TTCPBlockSocket); virtual;
|
|
|
|
{: Assign settings (certificates and configuration) from another SSL plugin
|
|
class.}
|
|
procedure Assign(const Value: TCustomSSL); virtual;
|
|
|
|
{: return description of used plugin. It usually return name and version
|
|
of used SSL library.}
|
|
function LibVersion: String; virtual;
|
|
|
|
{: return name of used plugin.}
|
|
function LibName: String; virtual;
|
|
|
|
{: Do not call this directly. It is used internally by @link(TTCPBlockSocket)!
|
|
|
|
Here is needed code for start SSL connection.}
|
|
function Connect: boolean; virtual;
|
|
|
|
{: Do not call this directly. It is used internally by @link(TTCPBlockSocket)!
|
|
|
|
Here is needed code for acept new SSL connection.}
|
|
function Accept: boolean; virtual;
|
|
|
|
{: Do not call this directly. It is used internally by @link(TTCPBlockSocket)!
|
|
|
|
Here is needed code for hard shutdown of SSL connection. (for example,
|
|
before socket is closed)}
|
|
function Shutdown: boolean; virtual;
|
|
|
|
{: Do not call this directly. It is used internally by @link(TTCPBlockSocket)!
|
|
|
|
Here is needed code for soft shutdown of SSL connection. (for example,
|
|
when you need to continue with unprotected connection.)}
|
|
function BiShutdown: boolean; virtual;
|
|
|
|
{: Do not call this directly. It is used internally by @link(TTCPBlockSocket)!
|
|
|
|
Here is needed code for sending some datas by SSL connection.}
|
|
function SendBuffer(Buffer: TMemory; Len: Integer): Integer; virtual;
|
|
|
|
{: Do not call this directly. It is used internally by @link(TTCPBlockSocket)!
|
|
|
|
Here is needed code for receiving some datas by SSL connection.}
|
|
function RecvBuffer(Buffer: TMemory; Len: Integer): Integer; virtual;
|
|
|
|
{: Do not call this directly. It is used internally by @link(TTCPBlockSocket)!
|
|
|
|
Here is needed code for getting count of datas what waiting for read.
|
|
If SSL plugin not allows this, then it should return 0.}
|
|
function WaitingData: Integer; virtual;
|
|
|
|
{:Return string with identificator of SSL/TLS version of existing
|
|
connection.}
|
|
function GetSSLVersion: string; virtual;
|
|
|
|
{:Return subject of remote SSL peer.}
|
|
function GetPeerSubject: string; virtual;
|
|
|
|
{:Return Serial number if remote X509 certificate.}
|
|
function GetPeerSerialNo: integer; virtual;
|
|
|
|
{:Return issuer certificate of remote SSL peer.}
|
|
function GetPeerIssuer: string; virtual;
|
|
|
|
{:Return peer name from remote side certificate. This is good for verify,
|
|
if certificate is generated for remote side IP name.}
|
|
function GetPeerName: string; virtual;
|
|
|
|
{:Returns has of peer name from remote side certificate. This is good
|
|
for fast remote side authentication.}
|
|
function GetPeerNameHash: cardinal; virtual;
|
|
|
|
{:Return fingerprint of remote SSL peer.}
|
|
function GetPeerFingerprint: string; virtual;
|
|
|
|
{:Return all detailed information about certificate from remote side of
|
|
SSL/TLS connection. Result string can be multilined! Each plugin can return
|
|
this informations in different format!}
|
|
function GetCertInfo: string; virtual;
|
|
|
|
{:Return currently used Cipher.}
|
|
function GetCipherName: string; virtual;
|
|
|
|
{:Return currently used number of bits in current Cipher algorythm.}
|
|
function GetCipherBits: integer; virtual;
|
|
|
|
{:Return number of bits in current Cipher algorythm.}
|
|
function GetCipherAlgBits: integer; virtual;
|
|
|
|
{:Return result value of verify remote side certificate. Look to OpenSSL
|
|
documentation for possible values. For example 0 is successfuly verified
|
|
certificate, or 18 is self-signed certificate.}
|
|
function GetVerifyCert: integer; virtual;
|
|
|
|
{: Resurn @true if SSL mode is enabled on existing cvonnection.}
|
|
property SSLEnabled: Boolean read FSSLEnabled;
|
|
|
|
{:Return error code of last SSL operation. 0 is OK.}
|
|
property LastError: integer read FLastError;
|
|
|
|
{:Return error description of last SSL operation.}
|
|
property LastErrorDesc: string read FLastErrorDesc;
|
|
published
|
|
{:Here you can specify requested SSL/TLS mode. Default is autodetection, but
|
|
on some servers autodetection not working properly. In this case you must
|
|
specify requested SSL/TLS mode by your hand!}
|
|
property SSLType: TSSLType read FSSLType write FSSLType;
|
|
|
|
{:Password for decrypting of encoded certificate or key.}
|
|
property KeyPassword: string read FKeyPassword write FKeyPassword;
|
|
|
|
{:Username for possible credentials.}
|
|
property Username: string read FUsername write FUsername;
|
|
|
|
{:password for possible credentials.}
|
|
property Password: string read FPassword write FPassword;
|
|
|
|
{:By this property you can modify default set of SSL/TLS ciphers.}
|
|
property Ciphers: string read FCiphers write FCiphers;
|
|
|
|
{:Used for loading certificate from disk file. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property CertificateFile: string read FCertificateFile write FCertificateFile;
|
|
|
|
{:Used for loading private key from disk file. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property PrivateKeyFile: string read FPrivateKeyFile write FPrivateKeyFile;
|
|
|
|
{:Used for loading certificate from binary string. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property Certificate: Ansistring read FCertificate write FCertificate;
|
|
|
|
{:Used for loading private key from binary string. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property PrivateKey: Ansistring read FPrivateKey write FPrivateKey;
|
|
|
|
{:Used for loading PFX from binary string. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property PFX: Ansistring read FPFX write FPFX;
|
|
|
|
{:Used for loading PFX from disk file. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property PFXfile: string read FPFXfile write FPFXfile;
|
|
|
|
{:Used for loading trusted certificates from disk file. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property TrustCertificateFile: string read FTrustCertificateFile write FTrustCertificateFile;
|
|
|
|
{:Used for loading trusted certificates from binary string. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property TrustCertificate: Ansistring read FTrustCertificate write FTrustCertificate;
|
|
|
|
{:Used for loading CA certificates from binary string. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property CertCA: Ansistring read FCertCA write FCertCA;
|
|
|
|
{:Used for loading CA certificates from disk file. See to plugin documentation
|
|
if this method is supported and how!}
|
|
property CertCAFile: string read FCertCAFile write SetCertCAFile;
|
|
|
|
{:If @true, then is verified client certificate. (it is good for writing
|
|
SSL/TLS servers.) When you are not server, but you are client, then if this
|
|
property is @true, verify servers certificate.}
|
|
property VerifyCert: Boolean read FVerifyCert write FVerifyCert;
|
|
|
|
{:channel type for possible SSH connections}
|
|
property SSHChannelType: string read FSSHChannelType write FSSHChannelType;
|
|
|
|
{:First argument of channel type for possible SSH connections}
|
|
property SSHChannelArg1: string read FSSHChannelArg1 write FSSHChannelArg1;
|
|
|
|
{:Second argument of channel type for possible SSH connections}
|
|
property SSHChannelArg2: string read FSSHChannelArg2 write FSSHChannelArg2;
|
|
|
|
{: Level of standards compliance level
|
|
(CryptLib: values in cryptlib.pas, -1: use default value ) }
|
|
property CertComplianceLevel:integer read FCertComplianceLevel write FCertComplianceLevel;
|
|
|
|
{:This event is called when verifying the server certificate immediatally after
|
|
a successfull verification in the ssl library.}
|
|
property OnVerifyCert: THookVerifyCert read FOnVerifyCert write FOnVerifyCert;
|
|
|
|
{: Server Name Identification. Host name to send to server. If empty the host name
|
|
found in URL will be used, which should be the normal use (http Header Host = SNI Host).
|
|
The value is cleared after the connection is established.
|
|
(SNI support requires OpenSSL 0.9.8k or later. Cryptlib not supported, yet ) }
|
|
property SNIHost:string read FSNIHost write FSNIHost;
|
|
end;
|
|
|
|
{:@abstract(Default SSL plugin with no SSL support.)
|
|
Dummy SSL plugin implementation for applications without SSL/TLS support.}
|
|
TSSLNone = class (TCustomSSL)
|
|
public
|
|
{:See @inherited}
|
|
function LibVersion: String; override;
|
|
{:See @inherited}
|
|
function LibName: String; override;
|
|
end;
|
|
|
|
{:@abstract(Record with definition of IP packet header.)
|
|
For reading data from ICMP or RAW sockets.}
|
|
TIPHeader = record
|
|
VerLen: Byte;
|
|
TOS: Byte;
|
|
TotalLen: Word;
|
|
Identifer: Word;
|
|
FragOffsets: Word;
|
|
TTL: Byte;
|
|
Protocol: Byte;
|
|
CheckSum: Word;
|
|
SourceIp: LongWord;
|
|
DestIp: LongWord;
|
|
Options: LongWord;
|
|
end;
|
|
|
|
{:@abstract(Parent class of application protocol implementations.)
|
|
By this class is defined common properties.}
|
|
TSynaClient = Class(TObject)
|
|
protected
|
|
FTargetHost: string;
|
|
FTargetPort: string;
|
|
FIPInterface: string;
|
|
FTimeout: integer;
|
|
FUserName: string;
|
|
FPassword: string;
|
|
public
|
|
constructor Create;
|
|
published
|
|
{:Specify terget server IP (or symbolic name). Default is 'localhost'.}
|
|
property TargetHost: string read FTargetHost Write FTargetHost;
|
|
|
|
{:Specify terget server port (or symbolic name).}
|
|
property TargetPort: string read FTargetPort Write FTargetPort;
|
|
|
|
{:Defined local socket address. (outgoing IP address). By default is used
|
|
'0.0.0.0' as wildcard for default IP.}
|
|
property IPInterface: string read FIPInterface Write FIPInterface;
|
|
|
|
{:Specify default timeout for socket operations.}
|
|
property Timeout: integer read FTimeout Write FTimeout;
|
|
|
|
{:If protocol need user authorization, then fill here username.}
|
|
property UserName: string read FUserName Write FUserName;
|
|
|
|
{:If protocol need user authorization, then fill here password.}
|
|
property Password: string read FPassword Write FPassword;
|
|
end;
|
|
|
|
var
|
|
{:Selected SSL plugin. Default is @link(TSSLNone).
|
|
|
|
Do not change this value directly!!!
|
|
|
|
Just add your plugin unit to your project uses instead. Each plugin unit have
|
|
initialization code what modify this variable.}
|
|
SSLImplementation: TSSLClass = TSSLNone;
|
|
|
|
implementation
|
|
|
|
{$IFDEF ONCEWINSOCK}
|
|
var
|
|
WsaDataOnce: TWSADATA;
|
|
e: ESynapseError;
|
|
{$ENDIF}
|
|
|
|
|
|
constructor TBlockSocket.Create;
|
|
begin
|
|
CreateAlternate('');
|
|
end;
|
|
|
|
constructor TBlockSocket.CreateAlternate(Stub: string);
|
|
{$IFNDEF ONCEWINSOCK}
|
|
var
|
|
e: ESynapseError;
|
|
{$ENDIF}
|
|
begin
|
|
inherited Create;
|
|
FDelayedOptions := TList.Create;
|
|
FRaiseExcept := False;
|
|
{$IFDEF RAISEEXCEPT}
|
|
FRaiseExcept := True;
|
|
{$ENDIF}
|
|
FSocket := INVALID_SOCKET;
|
|
FBuffer := '';
|
|
FLastCR := False;
|
|
FLastLF := False;
|
|
FBinded := False;
|
|
FNonBlockMode := False;
|
|
FMaxLineLength := 0;
|
|
FMaxSendBandwidth := 0;
|
|
FNextSend := 0;
|
|
FMaxRecvBandwidth := 0;
|
|
FNextRecv := 0;
|
|
FConvertLineEnd := False;
|
|
FFamily := SF_Any;
|
|
FFamilySave := SF_Any;
|
|
FIP6used := False;
|
|
FPreferIP4 := True;
|
|
FInterPacketTimeout := True;
|
|
FRecvCounter := 0;
|
|
FSendCounter := 0;
|
|
FSendMaxChunk := c64k;
|
|
FStopFlag := False;
|
|
FNonblockSendTimeout := 15000;
|
|
FHeartbeatRate := 0;
|
|
FOwner := nil;
|
|
{$IFNDEF ONCEWINSOCK}
|
|
if Stub = '' then
|
|
Stub := DLLStackName;
|
|
if not InitSocketInterface(Stub) then
|
|
begin
|
|
e := ESynapseError.Create('Error loading Socket interface (' + Stub + ')!');
|
|
e.ErrorCode := 0;
|
|
e.ErrorMessage := 'Error loading Socket interface (' + Stub + ')!';
|
|
raise e;
|
|
end;
|
|
SockCheck(synsock.WSAStartup(WinsockLevel, FWsaDataOnce));
|
|
ExceptCheck;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
destructor TBlockSocket.Destroy;
|
|
var
|
|
n: integer;
|
|
p: TSynaOption;
|
|
begin
|
|
CloseSocket;
|
|
{$IFNDEF ONCEWINSOCK}
|
|
synsock.WSACleanup;
|
|
DestroySocketInterface;
|
|
{$ENDIF}
|
|
for n := FDelayedOptions.Count - 1 downto 0 do
|
|
begin
|
|
p := TSynaOption(FDelayedOptions[n]);
|
|
p.Free;
|
|
end;
|
|
FDelayedOptions.Free;
|
|
inherited Destroy;
|
|
end;
|
|
|
|
function TBlockSocket.FamilyToAF(f: TSocketFamily): TAddrFamily;
|
|
begin
|
|
case f of
|
|
SF_ip4:
|
|
Result := AF_INET;
|
|
SF_ip6:
|
|
Result := AF_INET6;
|
|
else
|
|
Result := AF_UNSPEC;
|
|
end;
|
|
end;
|
|
|
|
procedure TBlockSocket.SetDelayedOption(const Value: TSynaOption);
|
|
var
|
|
li: TLinger;
|
|
x: integer;
|
|
buf: TMemory;
|
|
{$IFNDEF MSWINDOWS}
|
|
timeval: TTimeval;
|
|
{$ENDIF}
|
|
begin
|
|
case value.Option of
|
|
SOT_Linger:
|
|
begin
|
|
{$IFDEF CIL}
|
|
li := TLinger.Create(Value.Enabled, Value.Value div 1000);
|
|
synsock.SetSockOptObj(FSocket, integer(SOL_SOCKET), integer(SO_LINGER), li);
|
|
{$ELSE}
|
|
li.l_onoff := Ord(Value.Enabled);
|
|
li.l_linger := Value.Value div 1000;
|
|
buf := @li;
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_LINGER), buf, SizeOf(li));
|
|
{$ENDIF}
|
|
end;
|
|
SOT_RecvBuff:
|
|
begin
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(value.Value);
|
|
{$ELSE}
|
|
buf := @Value.Value;
|
|
{$ENDIF}
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_RCVBUF),
|
|
buf, SizeOf(Value.Value));
|
|
end;
|
|
SOT_SendBuff:
|
|
begin
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(value.Value);
|
|
{$ELSE}
|
|
buf := @Value.Value;
|
|
{$ENDIF}
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_SNDBUF),
|
|
buf, SizeOf(Value.Value));
|
|
end;
|
|
SOT_NonBlock:
|
|
begin
|
|
FNonBlockMode := Value.Enabled;
|
|
x := Ord(FNonBlockMode);
|
|
synsock.IoctlSocket(FSocket, FIONBIO, x);
|
|
end;
|
|
SOT_RecvTimeout:
|
|
begin
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(value.Value);
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_RCVTIMEO),
|
|
buf, SizeOf(Value.Value));
|
|
{$ELSE}
|
|
{$IFDEF MSWINDOWS}
|
|
buf := @Value.Value;
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_RCVTIMEO),
|
|
buf, SizeOf(Value.Value));
|
|
{$ELSE}
|
|
timeval.tv_sec:=Value.Value div 1000;
|
|
timeval.tv_usec:=(Value.Value mod 1000) * 1000;
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_RCVTIMEO),
|
|
@timeval, SizeOf(timeval));
|
|
{$ENDIF}
|
|
{$ENDIF}
|
|
end;
|
|
SOT_SendTimeout:
|
|
begin
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(value.Value);
|
|
{$ELSE}
|
|
{$IFDEF MSWINDOWS}
|
|
buf := @Value.Value;
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_SNDTIMEO),
|
|
buf, SizeOf(Value.Value));
|
|
{$ELSE}
|
|
timeval.tv_sec:=Value.Value div 1000;
|
|
timeval.tv_usec:=(Value.Value mod 1000) * 1000;
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_SNDTIMEO),
|
|
@timeval, SizeOf(timeval));
|
|
{$ENDIF}
|
|
{$ENDIF}
|
|
end;
|
|
SOT_Reuse:
|
|
begin
|
|
x := Ord(Value.Enabled);
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(x);
|
|
{$ELSE}
|
|
buf := @x;
|
|
{$ENDIF}
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_REUSEADDR), buf, SizeOf(x));
|
|
end;
|
|
SOT_TTL:
|
|
begin
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(value.Value);
|
|
{$ELSE}
|
|
buf := @Value.Value;
|
|
{$ENDIF}
|
|
if FIP6Used then
|
|
synsock.SetSockOpt(FSocket, integer(IPPROTO_IPV6), integer(IPV6_UNICAST_HOPS),
|
|
buf, SizeOf(Value.Value))
|
|
else
|
|
synsock.SetSockOpt(FSocket, integer(IPPROTO_IP), integer(IP_TTL),
|
|
buf, SizeOf(Value.Value));
|
|
end;
|
|
SOT_Broadcast:
|
|
begin
|
|
//#todo1 broadcasty na IP6
|
|
x := Ord(Value.Enabled);
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(x);
|
|
{$ELSE}
|
|
buf := @x;
|
|
{$ENDIF}
|
|
synsock.SetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_BROADCAST), buf, SizeOf(x));
|
|
end;
|
|
SOT_MulticastTTL:
|
|
begin
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(value.Value);
|
|
{$ELSE}
|
|
buf := @Value.Value;
|
|
{$ENDIF}
|
|
if FIP6Used then
|
|
synsock.SetSockOpt(FSocket, integer(IPPROTO_IPV6), integer(IPV6_MULTICAST_HOPS),
|
|
buf, SizeOf(Value.Value))
|
|
else
|
|
synsock.SetSockOpt(FSocket, integer(IPPROTO_IP), integer(IP_MULTICAST_TTL),
|
|
buf, SizeOf(Value.Value));
|
|
end;
|
|
SOT_MulticastLoop:
|
|
begin
|
|
x := Ord(Value.Enabled);
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(x);
|
|
{$ELSE}
|
|
buf := @x;
|
|
{$ENDIF}
|
|
if FIP6Used then
|
|
synsock.SetSockOpt(FSocket, integer(IPPROTO_IPV6), integer(IPV6_MULTICAST_LOOP), buf, SizeOf(x))
|
|
else
|
|
synsock.SetSockOpt(FSocket, integer(IPPROTO_IP), integer(IP_MULTICAST_LOOP), buf, SizeOf(x));
|
|
end;
|
|
end;
|
|
Value.free;
|
|
end;
|
|
|
|
procedure TBlockSocket.DelayedOption(const Value: TSynaOption);
|
|
begin
|
|
if FSocket = INVALID_SOCKET then
|
|
begin
|
|
FDelayedOptions.Insert(0, Value);
|
|
end
|
|
else
|
|
SetDelayedOption(Value);
|
|
end;
|
|
|
|
procedure TBlockSocket.ProcessDelayedOptions;
|
|
var
|
|
n: integer;
|
|
d: TSynaOption;
|
|
begin
|
|
for n := FDelayedOptions.Count - 1 downto 0 do
|
|
begin
|
|
d := TSynaOption(FDelayedOptions[n]);
|
|
SetDelayedOption(d);
|
|
end;
|
|
FDelayedOptions.Clear;
|
|
end;
|
|
|
|
procedure TBlockSocket.SetSin(var Sin: TVarSin; IP, Port: string);
|
|
var
|
|
f: TSocketFamily;
|
|
begin
|
|
DoStatus(HR_ResolvingBegin, IP + ':' + Port);
|
|
ResetLastError;
|
|
//if socket exists, then use their type, else use users selection
|
|
f := SF_Any;
|
|
if (FSocket = INVALID_SOCKET) and (FFamily = SF_any) then
|
|
begin
|
|
if IsIP(IP) then
|
|
f := SF_IP4
|
|
else
|
|
if IsIP6(IP) then
|
|
f := SF_IP6;
|
|
end
|
|
else
|
|
f := FFamily;
|
|
FLastError := synsock.SetVarSin(sin, ip, port, FamilyToAF(f),
|
|
GetSocketprotocol, GetSocketType, FPreferIP4);
|
|
DoStatus(HR_ResolvingEnd, GetSinIP(sin) + ':' + IntTostr(GetSinPort(sin)));
|
|
end;
|
|
|
|
function TBlockSocket.GetSinIP(Sin: TVarSin): string;
|
|
begin
|
|
Result := synsock.GetSinIP(sin);
|
|
end;
|
|
|
|
function TBlockSocket.GetSinPort(Sin: TVarSin): Integer;
|
|
begin
|
|
Result := synsock.GetSinPort(sin);
|
|
end;
|
|
|
|
procedure TBlockSocket.CreateSocket;
|
|
var
|
|
sin: TVarSin;
|
|
begin
|
|
//dummy for SF_Any Family mode
|
|
ResetLastError;
|
|
if (FFamily <> SF_Any) and (FSocket = INVALID_SOCKET) then
|
|
begin
|
|
{$IFDEF CIL}
|
|
if FFamily = SF_IP6 then
|
|
sin := TVarSin.Create(IPAddress.Parse('::0'), 0)
|
|
else
|
|
sin := TVarSin.Create(IPAddress.Parse('0.0.0.0'), 0);
|
|
{$ELSE}
|
|
FillChar(Sin, Sizeof(Sin), 0);
|
|
if FFamily = SF_IP6 then
|
|
sin.sin_family := AF_INET6
|
|
else
|
|
sin.sin_family := AF_INET;
|
|
{$ENDIF}
|
|
InternalCreateSocket(Sin);
|
|
end;
|
|
end;
|
|
|
|
procedure TBlockSocket.CreateSocketByName(const Value: String);
|
|
var
|
|
sin: TVarSin;
|
|
begin
|
|
ResetLastError;
|
|
if FSocket = INVALID_SOCKET then
|
|
begin
|
|
SetSin(sin, value, '0');
|
|
if FLastError = 0 then
|
|
InternalCreateSocket(Sin);
|
|
end;
|
|
end;
|
|
|
|
procedure TBlockSocket.InternalCreateSocket(Sin: TVarSin);
|
|
begin
|
|
FStopFlag := False;
|
|
FRecvCounter := 0;
|
|
FSendCounter := 0;
|
|
ResetLastError;
|
|
if FSocket = INVALID_SOCKET then
|
|
begin
|
|
FBuffer := '';
|
|
FBinded := False;
|
|
FIP6Used := Sin.AddressFamily = AF_INET6;
|
|
FSocket := synsock.Socket(integer(Sin.AddressFamily), GetSocketType, GetSocketProtocol);
|
|
if FSocket = INVALID_SOCKET then
|
|
FLastError := synsock.WSAGetLastError;
|
|
{$IFNDEF CIL}
|
|
FD_ZERO(FFDSet);
|
|
FD_SET(FSocket, FFDSet);
|
|
{$ENDIF}
|
|
ExceptCheck;
|
|
if FIP6used then
|
|
DoStatus(HR_SocketCreate, 'IPv6')
|
|
else
|
|
DoStatus(HR_SocketCreate, 'IPv4');
|
|
ProcessDelayedOptions;
|
|
DoCreateSocket;
|
|
end;
|
|
end;
|
|
|
|
procedure TBlockSocket.CloseSocket;
|
|
begin
|
|
AbortSocket;
|
|
end;
|
|
|
|
procedure TBlockSocket.AbortSocket;
|
|
var
|
|
n: integer;
|
|
p: TSynaOption;
|
|
begin
|
|
if FSocket <> INVALID_SOCKET then
|
|
synsock.CloseSocket(FSocket);
|
|
FSocket := INVALID_SOCKET;
|
|
for n := FDelayedOptions.Count - 1 downto 0 do
|
|
begin
|
|
p := TSynaOption(FDelayedOptions[n]);
|
|
p.Free;
|
|
end;
|
|
FDelayedOptions.Clear;
|
|
FFamily := FFamilySave;
|
|
DoStatus(HR_SocketClose, '');
|
|
end;
|
|
|
|
procedure TBlockSocket.Bind(IP, Port: string);
|
|
var
|
|
Sin: TVarSin;
|
|
begin
|
|
ResetLastError;
|
|
if (FSocket <> INVALID_SOCKET)
|
|
or not((FFamily = SF_ANY) and (IP = cAnyHost) and (Port = cAnyPort)) then
|
|
begin
|
|
SetSin(Sin, IP, Port);
|
|
if FLastError = 0 then
|
|
begin
|
|
if FSocket = INVALID_SOCKET then
|
|
InternalCreateSocket(Sin);
|
|
SockCheck(synsock.Bind(FSocket, Sin));
|
|
GetSinLocal;
|
|
FBuffer := '';
|
|
FBinded := True;
|
|
end;
|
|
ExceptCheck;
|
|
DoStatus(HR_Bind, IP + ':' + Port);
|
|
end;
|
|
end;
|
|
|
|
procedure TBlockSocket.Connect(IP, Port: string);
|
|
var
|
|
Sin: TVarSin;
|
|
begin
|
|
SetSin(Sin, IP, Port);
|
|
if FLastError = 0 then
|
|
begin
|
|
if FSocket = INVALID_SOCKET then
|
|
InternalCreateSocket(Sin);
|
|
SockCheck(synsock.Connect(FSocket, Sin));
|
|
if FLastError = 0 then
|
|
GetSins;
|
|
FBuffer := '';
|
|
FLastCR := False;
|
|
FLastLF := False;
|
|
end;
|
|
ExceptCheck;
|
|
DoStatus(HR_Connect, IP + ':' + Port);
|
|
end;
|
|
|
|
procedure TBlockSocket.Listen;
|
|
begin
|
|
SockCheck(synsock.Listen(FSocket, SOMAXCONN));
|
|
GetSins;
|
|
ExceptCheck;
|
|
DoStatus(HR_Listen, '');
|
|
end;
|
|
|
|
function TBlockSocket.Accept: TSocket;
|
|
begin
|
|
Result := synsock.Accept(FSocket, FRemoteSin);
|
|
/// SockCheck(Result);
|
|
ExceptCheck;
|
|
DoStatus(HR_Accept, '');
|
|
end;
|
|
|
|
procedure TBlockSocket.GetSinLocal;
|
|
begin
|
|
synsock.GetSockName(FSocket, FLocalSin);
|
|
end;
|
|
|
|
procedure TBlockSocket.GetSinRemote;
|
|
begin
|
|
synsock.GetPeerName(FSocket, FRemoteSin);
|
|
end;
|
|
|
|
procedure TBlockSocket.GetSins;
|
|
begin
|
|
GetSinLocal;
|
|
GetSinRemote;
|
|
end;
|
|
|
|
procedure TBlockSocket.SetBandwidth(Value: Integer);
|
|
begin
|
|
MaxSendBandwidth := Value;
|
|
MaxRecvBandwidth := Value;
|
|
end;
|
|
|
|
procedure TBlockSocket.LimitBandwidth(Length: Integer; MaxB: integer; var Next: LongWord);
|
|
var
|
|
x: LongWord;
|
|
y: LongWord;
|
|
n: integer;
|
|
begin
|
|
if FStopFlag then
|
|
exit;
|
|
if MaxB > 0 then
|
|
begin
|
|
y := GetTick;
|
|
if Next > y then
|
|
begin
|
|
x := Next - y;
|
|
if x > 0 then
|
|
begin
|
|
DoStatus(HR_Wait, IntToStr(x));
|
|
sleep(x mod 250);
|
|
for n := 1 to x div 250 do
|
|
if FStopFlag then
|
|
Break
|
|
else
|
|
sleep(250);
|
|
end;
|
|
end;
|
|
Next := GetTick + Trunc((Length / MaxB) * 1000);
|
|
end;
|
|
end;
|
|
|
|
function TBlockSocket.TestStopFlag: Boolean;
|
|
begin
|
|
DoHeartbeat;
|
|
Result := FStopFlag;
|
|
if Result then
|
|
begin
|
|
FStopFlag := False;
|
|
FLastError := WSAECONNABORTED;
|
|
ExceptCheck;
|
|
end;
|
|
end;
|
|
|
|
|
|
function TBlockSocket.SendBuffer(Buffer: TMemory; Length: Integer): Integer;
|
|
{$IFNDEF CIL}
|
|
var
|
|
x, y: integer;
|
|
l, r: integer;
|
|
p: Pointer;
|
|
{$ENDIF}
|
|
begin
|
|
Result := 0;
|
|
if TestStopFlag then
|
|
Exit;
|
|
DoMonitor(True, Buffer, Length);
|
|
{$IFDEF CIL}
|
|
Result := synsock.Send(FSocket, Buffer, Length, 0);
|
|
{$ELSE}
|
|
l := Length;
|
|
x := 0;
|
|
while x < l do
|
|
begin
|
|
y := l - x;
|
|
if y > FSendMaxChunk then
|
|
y := FSendMaxChunk;
|
|
if y > 0 then
|
|
begin
|
|
LimitBandwidth(y, FMaxSendBandwidth, FNextsend);
|
|
p := IncPoint(Buffer, x);
|
|
r := synsock.Send(FSocket, p, y, MSG_NOSIGNAL);
|
|
SockCheck(r);
|
|
if FLastError = WSAEWOULDBLOCK then
|
|
begin
|
|
if CanWrite(FNonblockSendTimeout) then
|
|
begin
|
|
r := synsock.Send(FSocket, p, y, MSG_NOSIGNAL);
|
|
SockCheck(r);
|
|
end
|
|
else
|
|
FLastError := WSAETIMEDOUT;
|
|
end;
|
|
if FLastError <> 0 then
|
|
Break;
|
|
Inc(x, r);
|
|
Inc(Result, r);
|
|
Inc(FSendCounter, r);
|
|
DoStatus(HR_WriteCount, IntToStr(r));
|
|
end
|
|
else
|
|
break;
|
|
end;
|
|
{$ENDIF}
|
|
ExceptCheck;
|
|
end;
|
|
|
|
procedure TBlockSocket.SendByte(Data: Byte);
|
|
{$IFDEF CIL}
|
|
var
|
|
buf: TMemory;
|
|
{$ENDIF}
|
|
begin
|
|
{$IFDEF CIL}
|
|
setlength(buf, 1);
|
|
buf[0] := Data;
|
|
SendBuffer(buf, 1);
|
|
{$ELSE}
|
|
SendBuffer(@Data, 1);
|
|
{$ENDIF}
|
|
end;
|
|
|
|
procedure TBlockSocket.SendString(Data: AnsiString);
|
|
var
|
|
buf: TMemory;
|
|
begin
|
|
{$IFDEF CIL}
|
|
buf := BytesOf(Data);
|
|
{$ELSE}
|
|
buf := Pointer(data);
|
|
{$ENDIF}
|
|
SendBuffer(buf, Length(Data));
|
|
end;
|
|
|
|
procedure TBlockSocket.SendInteger(Data: integer);
|
|
var
|
|
buf: TMemory;
|
|
begin
|
|
{$IFDEF CIL}
|
|
buf := System.BitConverter.GetBytes(Data);
|
|
{$ELSE}
|
|
buf := @Data;
|
|
{$ENDIF}
|
|
SendBuffer(buf, SizeOf(Data));
|
|
end;
|
|
|
|
procedure TBlockSocket.SendBlock(const Data: AnsiString);
|
|
var
|
|
i: integer;
|
|
begin
|
|
i := SwapBytes(Length(data));
|
|
SendString(Codelongint(i) + Data);
|
|
end;
|
|
|
|
procedure TBlockSocket.InternalSendStream(const Stream: TStream; WithSize, Indy: boolean);
|
|
var
|
|
l: integer;
|
|
yr: integer;
|
|
s: AnsiString;
|
|
b: boolean;
|
|
{$IFDEF CIL}
|
|
buf: TMemory;
|
|
{$ENDIF}
|
|
begin
|
|
b := true;
|
|
l := 0;
|
|
if WithSize then
|
|
begin
|
|
l := Stream.Size - Stream.Position;;
|
|
if not Indy then
|
|
l := synsock.HToNL(l);
|
|
end;
|
|
repeat
|
|
{$IFDEF CIL}
|
|
Setlength(buf, FSendMaxChunk);
|
|
yr := Stream.read(buf, FSendMaxChunk);
|
|
if yr > 0 then
|
|
begin
|
|
if WithSize and b then
|
|
begin
|
|
b := false;
|
|
SendString(CodeLongInt(l));
|
|
end;
|
|
SendBuffer(buf, yr);
|
|
if FLastError <> 0 then
|
|
break;
|
|
end
|
|
{$ELSE}
|
|
Setlength(s, FSendMaxChunk);
|
|
yr := Stream.read(Pointer(s)^, FSendMaxChunk);
|
|
if yr > 0 then
|
|
begin
|
|
SetLength(s, yr);
|
|
if WithSize and b then
|
|
begin
|
|
b := false;
|
|
SendString(CodeLongInt(l) + s);
|
|
end
|
|
else
|
|
SendString(s);
|
|
if FLastError <> 0 then
|
|
break;
|
|
end
|
|
{$ENDIF}
|
|
until yr <= 0;
|
|
end;
|
|
|
|
procedure TBlockSocket.SendStreamRaw(const Stream: TStream);
|
|
begin
|
|
InternalSendStream(Stream, false, false);
|
|
end;
|
|
|
|
procedure TBlockSocket.SendStreamIndy(const Stream: TStream);
|
|
begin
|
|
InternalSendStream(Stream, true, true);
|
|
end;
|
|
|
|
procedure TBlockSocket.SendStream(const Stream: TStream);
|
|
begin
|
|
InternalSendStream(Stream, true, false);
|
|
end;
|
|
|
|
function TBlockSocket.RecvBuffer(Buffer: TMemory; Length: Integer): Integer;
|
|
begin
|
|
Result := 0;
|
|
if TestStopFlag then
|
|
Exit;
|
|
LimitBandwidth(Length, FMaxRecvBandwidth, FNextRecv);
|
|
// Result := synsock.Recv(FSocket, Buffer^, Length, MSG_NOSIGNAL);
|
|
Result := synsock.Recv(FSocket, Buffer, Length, MSG_NOSIGNAL);
|
|
if Result = 0 then
|
|
FLastError := WSAECONNRESET
|
|
else
|
|
SockCheck(Result);
|
|
ExceptCheck;
|
|
if Result > 0 then
|
|
begin
|
|
Inc(FRecvCounter, Result);
|
|
DoStatus(HR_ReadCount, IntToStr(Result));
|
|
DoMonitor(False, Buffer, Result);
|
|
DoReadFilter(Buffer, Result);
|
|
end;
|
|
end;
|
|
|
|
function TBlockSocket.RecvBufferEx(Buffer: TMemory; Len: Integer;
|
|
Timeout: Integer): Integer;
|
|
var
|
|
s: AnsiString;
|
|
rl, l: integer;
|
|
ti: LongWord;
|
|
{$IFDEF CIL}
|
|
n: integer;
|
|
b: TMemory;
|
|
{$ENDIF}
|
|
begin
|
|
ResetLastError;
|
|
Result := 0;
|
|
if Len > 0 then
|
|
begin
|
|
rl := 0;
|
|
repeat
|
|
ti := GetTick;
|
|
s := RecvPacket(Timeout);
|
|
l := Length(s);
|
|
if (rl + l) > Len then
|
|
l := Len - rl;
|
|
{$IFDEF CIL}
|
|
b := BytesOf(s);
|
|
for n := 0 to l do
|
|
Buffer[rl + n] := b[n];
|
|
{$ELSE}
|
|
Move(Pointer(s)^, IncPoint(Buffer, rl)^, l);
|
|
{$ENDIF}
|
|
rl := rl + l;
|
|
if FLastError <> 0 then
|
|
Break;
|
|
if rl >= Len then
|
|
Break;
|
|
if not FInterPacketTimeout then
|
|
begin
|
|
Timeout := Timeout - integer(TickDelta(ti, GetTick));
|
|
if Timeout <= 0 then
|
|
begin
|
|
FLastError := WSAETIMEDOUT;
|
|
Break;
|
|
end;
|
|
end;
|
|
until False;
|
|
delete(s, 1, l);
|
|
FBuffer := s;
|
|
Result := rl;
|
|
end;
|
|
end;
|
|
|
|
function TBlockSocket.RecvBufferStr(Len: Integer; Timeout: Integer): AnsiString;
|
|
var
|
|
x: integer;
|
|
{$IFDEF CIL}
|
|
buf: Tmemory;
|
|
{$ENDIF}
|
|
begin
|
|
Result := '';
|
|
if Len > 0 then
|
|
begin
|
|
{$IFDEF CIL}
|
|
Setlength(Buf, Len);
|
|
x := RecvBufferEx(buf, Len , Timeout);
|
|
if FLastError = 0 then
|
|
begin
|
|
SetLength(Buf, x);
|
|
Result := StringOf(buf);
|
|
end
|
|
else
|
|
Result := '';
|
|
{$ELSE}
|
|
Setlength(Result, Len);
|
|
x := RecvBufferEx(Pointer(Result), Len , Timeout);
|
|
if FLastError = 0 then
|
|
SetLength(Result, x)
|
|
else
|
|
Result := '';
|
|
{$ENDIF}
|
|
end;
|
|
end;
|
|
|
|
function TBlockSocket.RecvPacket(Timeout: Integer): AnsiString;
|
|
var
|
|
x: integer;
|
|
{$IFDEF CIL}
|
|
buf: TMemory;
|
|
{$ENDIF}
|
|
begin
|
|
Result := '';
|
|
ResetLastError;
|
|
if FBuffer <> '' then
|
|
begin
|
|
Result := FBuffer;
|
|
FBuffer := '';
|
|
end
|
|
else
|
|
begin
|
|
{$IFDEF MSWINDOWS}
|
|
//not drain CPU on large downloads...
|
|
Sleep(0);
|
|
{$ENDIF}
|
|
x := WaitingData;
|
|
if x > 0 then
|
|
begin
|
|
{$IFDEF CIL}
|
|
SetLength(Buf, x);
|
|
x := RecvBuffer(Buf, x);
|
|
if x >= 0 then
|
|
begin
|
|
SetLength(Buf, x);
|
|
Result := StringOf(Buf);
|
|
end;
|
|
{$ELSE}
|
|
SetLength(Result, x);
|
|
x := RecvBuffer(Pointer(Result), x);
|
|
if x >= 0 then
|
|
SetLength(Result, x);
|
|
{$ENDIF}
|
|
end
|
|
else
|
|
begin
|
|
if CanRead(Timeout) then
|
|
begin
|
|
x := WaitingData;
|
|
if x = 0 then
|
|
FLastError := WSAECONNRESET;
|
|
if x > 0 then
|
|
begin
|
|
{$IFDEF CIL}
|
|
SetLength(Buf, x);
|
|
x := RecvBuffer(Buf, x);
|
|
if x >= 0 then
|
|
begin
|
|
SetLength(Buf, x);
|
|
result := StringOf(Buf);
|
|
end;
|
|
{$ELSE}
|
|
SetLength(Result, x);
|
|
x := RecvBuffer(Pointer(Result), x);
|
|
if x >= 0 then
|
|
SetLength(Result, x);
|
|
{$ENDIF}
|
|
end;
|
|
end
|
|
else
|
|
FLastError := WSAETIMEDOUT;
|
|
end;
|
|
end;
|
|
if FConvertLineEnd and (Result <> '') then
|
|
begin
|
|
if FLastCR and (Result[1] = LF) then
|
|
Delete(Result, 1, 1);
|
|
if FLastLF and (Result[1] = CR) then
|
|
Delete(Result, 1, 1);
|
|
FLastCR := False;
|
|
FLastLF := False;
|
|
end;
|
|
ExceptCheck;
|
|
end;
|
|
|
|
|
|
function TBlockSocket.RecvByte(Timeout: Integer): Byte;
|
|
begin
|
|
Result := 0;
|
|
ResetLastError;
|
|
if FBuffer = '' then
|
|
FBuffer := RecvPacket(Timeout);
|
|
if (FLastError = 0) and (FBuffer <> '') then
|
|
begin
|
|
Result := Ord(FBuffer[1]);
|
|
Delete(FBuffer, 1, 1);
|
|
end;
|
|
ExceptCheck;
|
|
end;
|
|
|
|
function TBlockSocket.RecvInteger(Timeout: Integer): Integer;
|
|
var
|
|
s: AnsiString;
|
|
begin
|
|
Result := 0;
|
|
s := RecvBufferStr(4, Timeout);
|
|
if FLastError = 0 then
|
|
Result := (ord(s[1]) + ord(s[2]) * 256) + (ord(s[3]) + ord(s[4]) * 256) * 65536;
|
|
end;
|
|
|
|
function TBlockSocket.RecvTerminated(Timeout: Integer; const Terminator: AnsiString): AnsiString;
|
|
var
|
|
x: Integer;
|
|
s: AnsiString;
|
|
l: Integer;
|
|
CorCRLF: Boolean;
|
|
t: AnsiString;
|
|
tl: integer;
|
|
ti: LongWord;
|
|
begin
|
|
ResetLastError;
|
|
Result := '';
|
|
l := Length(Terminator);
|
|
if l = 0 then
|
|
Exit;
|
|
tl := l;
|
|
CorCRLF := FConvertLineEnd and (Terminator = CRLF);
|
|
s := '';
|
|
x := 0;
|
|
repeat
|
|
//get rest of FBuffer or incomming new data...
|
|
ti := GetTick;
|
|
s := s + RecvPacket(Timeout);
|
|
if FLastError <> 0 then
|
|
Break;
|
|
x := 0;
|
|
if Length(s) > 0 then
|
|
if CorCRLF then
|
|
begin
|
|
t := '';
|
|
x := PosCRLF(s, t);
|
|
tl := Length(t);
|
|
if t = CR then
|
|
FLastCR := True;
|
|
if t = LF then
|
|
FLastLF := True;
|
|
end
|
|
else
|
|
begin
|
|
x := pos(Terminator, s);
|
|
tl := l;
|
|
end;
|
|
if (FMaxLineLength <> 0) and (Length(s) > FMaxLineLength) then
|
|
begin
|
|
FLastError := WSAENOBUFS;
|
|
Break;
|
|
end;
|
|
if x > 0 then
|
|
Break;
|
|
if not FInterPacketTimeout then
|
|
begin
|
|
Timeout := Timeout - integer(TickDelta(ti, GetTick));
|
|
if Timeout <= 0 then
|
|
begin
|
|
FLastError := WSAETIMEDOUT;
|
|
Break;
|
|
end;
|
|
end;
|
|
until False;
|
|
if x > 0 then
|
|
begin
|
|
Result := Copy(s, 1, x - 1);
|
|
Delete(s, 1, x + tl - 1);
|
|
end;
|
|
FBuffer := s;
|
|
ExceptCheck;
|
|
end;
|
|
|
|
function TBlockSocket.RecvString(Timeout: Integer): AnsiString;
|
|
var
|
|
s: AnsiString;
|
|
begin
|
|
Result := '';
|
|
s := RecvTerminated(Timeout, CRLF);
|
|
if FLastError = 0 then
|
|
Result := s;
|
|
end;
|
|
|
|
function TBlockSocket.RecvBlock(Timeout: Integer): AnsiString;
|
|
var
|
|
x: integer;
|
|
begin
|
|
Result := '';
|
|
x := RecvInteger(Timeout);
|
|
if FLastError = 0 then
|
|
Result := RecvBufferStr(x, Timeout);
|
|
end;
|
|
|
|
procedure TBlockSocket.RecvStreamRaw(const Stream: TStream; Timeout: Integer);
|
|
var
|
|
s: AnsiString;
|
|
begin
|
|
repeat
|
|
s := RecvPacket(Timeout);
|
|
if FLastError = 0 then
|
|
WriteStrToStream(Stream, s);
|
|
until FLastError <> 0;
|
|
end;
|
|
|
|
procedure TBlockSocket.RecvStreamSize(const Stream: TStream; Timeout: Integer; Size: Integer);
|
|
var
|
|
s: AnsiString;
|
|
n: integer;
|
|
{$IFDEF CIL}
|
|
buf: TMemory;
|
|
{$ENDIF}
|
|
begin
|
|
for n := 1 to (Size div FSendMaxChunk) do
|
|
begin
|
|
{$IFDEF CIL}
|
|
SetLength(buf, FSendMaxChunk);
|
|
RecvBufferEx(buf, FSendMaxChunk, Timeout);
|
|
if FLastError <> 0 then
|
|
Exit;
|
|
Stream.Write(buf, FSendMaxChunk);
|
|
{$ELSE}
|
|
s := RecvBufferStr(FSendMaxChunk, Timeout);
|
|
if FLastError <> 0 then
|
|
Exit;
|
|
WriteStrToStream(Stream, s);
|
|
{$ENDIF}
|
|
end;
|
|
n := Size mod FSendMaxChunk;
|
|
if n > 0 then
|
|
begin
|
|
{$IFDEF CIL}
|
|
SetLength(buf, n);
|
|
RecvBufferEx(buf, n, Timeout);
|
|
if FLastError <> 0 then
|
|
Exit;
|
|
Stream.Write(buf, n);
|
|
{$ELSE}
|
|
s := RecvBufferStr(n, Timeout);
|
|
if FLastError <> 0 then
|
|
Exit;
|
|
WriteStrToStream(Stream, s);
|
|
{$ENDIF}
|
|
end;
|
|
end;
|
|
|
|
procedure TBlockSocket.RecvStreamIndy(const Stream: TStream; Timeout: Integer);
|
|
var
|
|
x: integer;
|
|
begin
|
|
x := RecvInteger(Timeout);
|
|
x := synsock.NToHL(x);
|
|
if FLastError = 0 then
|
|
RecvStreamSize(Stream, Timeout, x);
|
|
end;
|
|
|
|
procedure TBlockSocket.RecvStream(const Stream: TStream; Timeout: Integer);
|
|
var
|
|
x: integer;
|
|
begin
|
|
x := RecvInteger(Timeout);
|
|
if FLastError = 0 then
|
|
RecvStreamSize(Stream, Timeout, x);
|
|
end;
|
|
|
|
function TBlockSocket.PeekBuffer(Buffer: TMemory; Length: Integer): Integer;
|
|
begin
|
|
{$IFNDEF CIL}
|
|
// Result := synsock.Recv(FSocket, Buffer^, Length, MSG_PEEK + MSG_NOSIGNAL);
|
|
Result := synsock.Recv(FSocket, Buffer, Length, MSG_PEEK + MSG_NOSIGNAL);
|
|
SockCheck(Result);
|
|
ExceptCheck;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
function TBlockSocket.PeekByte(Timeout: Integer): Byte;
|
|
var
|
|
s: string;
|
|
begin
|
|
{$IFNDEF CIL}
|
|
Result := 0;
|
|
if CanRead(Timeout) then
|
|
begin
|
|
SetLength(s, 1);
|
|
PeekBuffer(Pointer(s), 1);
|
|
if s <> '' then
|
|
Result := Ord(s[1]);
|
|
end
|
|
else
|
|
FLastError := WSAETIMEDOUT;
|
|
ExceptCheck;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
procedure TBlockSocket.ResetLastError;
|
|
begin
|
|
FLastError := 0;
|
|
FLastErrorDesc := '';
|
|
end;
|
|
|
|
function TBlockSocket.SockCheck(SockResult: Integer): Integer;
|
|
begin
|
|
ResetLastError;
|
|
if SockResult = integer(SOCKET_ERROR) then
|
|
begin
|
|
FLastError := synsock.WSAGetLastError;
|
|
FLastErrorDesc := GetErrorDescEx;
|
|
end;
|
|
Result := FLastError;
|
|
end;
|
|
|
|
procedure TBlockSocket.ExceptCheck;
|
|
var
|
|
e: ESynapseError;
|
|
begin
|
|
FLastErrorDesc := GetErrorDescEx;
|
|
if (LastError <> 0) and (LastError <> WSAEINPROGRESS)
|
|
and (LastError <> WSAEWOULDBLOCK) then
|
|
begin
|
|
DoStatus(HR_Error, IntToStr(FLastError) + ',' + FLastErrorDesc);
|
|
if FRaiseExcept then
|
|
begin
|
|
e := ESynapseError.Create(Format('Synapse TCP/IP Socket error %d: %s',
|
|
[FLastError, FLastErrorDesc]));
|
|
e.ErrorCode := FLastError;
|
|
e.ErrorMessage := FLastErrorDesc;
|
|
raise e;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function TBlockSocket.WaitingData: Integer;
|
|
var
|
|
x: Integer;
|
|
begin
|
|
Result := 0;
|
|
if synsock.IoctlSocket(FSocket, FIONREAD, x) = 0 then
|
|
Result := x;
|
|
if Result > c64k then
|
|
Result := c64k;
|
|
end;
|
|
|
|
function TBlockSocket.WaitingDataEx: Integer;
|
|
begin
|
|
if FBuffer <> '' then
|
|
Result := Length(FBuffer)
|
|
else
|
|
Result := WaitingData;
|
|
end;
|
|
|
|
procedure TBlockSocket.Purge;
|
|
begin
|
|
Sleep(1);
|
|
try
|
|
while (Length(FBuffer) > 0) or (WaitingData > 0) do
|
|
begin
|
|
RecvPacket(0);
|
|
if FLastError <> 0 then
|
|
break;
|
|
end;
|
|
except
|
|
on exception do;
|
|
end;
|
|
ResetLastError;
|
|
end;
|
|
|
|
procedure TBlockSocket.SetLinger(Enable: Boolean; Linger: Integer);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_Linger;
|
|
d.Enabled := Enable;
|
|
d.Value := Linger;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
function TBlockSocket.LocalName: string;
|
|
begin
|
|
Result := synsock.GetHostName;
|
|
if Result = '' then
|
|
Result := '127.0.0.1';
|
|
end;
|
|
|
|
procedure TBlockSocket.ResolveNameToIP(Name: string; const IPList: TStrings);
|
|
begin
|
|
IPList.Clear;
|
|
synsock.ResolveNameToIP(Name, FamilyToAF(FFamily), GetSocketprotocol, GetSocketType, IPList);
|
|
if IPList.Count = 0 then
|
|
IPList.Add(cAnyHost);
|
|
end;
|
|
|
|
function TBlockSocket.ResolveName(Name: string): string;
|
|
var
|
|
l: TStringList;
|
|
begin
|
|
l := TStringList.Create;
|
|
try
|
|
ResolveNameToIP(Name, l);
|
|
Result := l[0];
|
|
finally
|
|
l.Free;
|
|
end;
|
|
end;
|
|
|
|
function TBlockSocket.ResolvePort(Port: string): Word;
|
|
begin
|
|
Result := synsock.ResolvePort(Port, FamilyToAF(FFamily), GetSocketProtocol, GetSocketType);
|
|
end;
|
|
|
|
function TBlockSocket.ResolveIPToName(IP: string): string;
|
|
begin
|
|
if not IsIP(IP) and not IsIp6(IP) then
|
|
IP := ResolveName(IP);
|
|
Result := synsock.ResolveIPToName(IP, FamilyToAF(FFamily), GetSocketProtocol, GetSocketType);
|
|
end;
|
|
|
|
procedure TBlockSocket.SetRemoteSin(IP, Port: string);
|
|
begin
|
|
SetSin(FRemoteSin, IP, Port);
|
|
end;
|
|
|
|
function TBlockSocket.GetLocalSinIP: string;
|
|
begin
|
|
Result := GetSinIP(FLocalSin);
|
|
end;
|
|
|
|
function TBlockSocket.GetRemoteSinIP: string;
|
|
begin
|
|
Result := GetSinIP(FRemoteSin);
|
|
end;
|
|
|
|
function TBlockSocket.GetLocalSinPort: Integer;
|
|
begin
|
|
Result := GetSinPort(FLocalSin);
|
|
end;
|
|
|
|
function TBlockSocket.GetRemoteSinPort: Integer;
|
|
begin
|
|
Result := GetSinPort(FRemoteSin);
|
|
end;
|
|
|
|
function TBlockSocket.InternalCanRead(Timeout: Integer): Boolean;
|
|
{$IFDEF CIL}
|
|
begin
|
|
Result := FSocket.Poll(Timeout * 1000, SelectMode.SelectRead);
|
|
{$ELSE}
|
|
var
|
|
TimeVal: PTimeVal;
|
|
TimeV: TTimeVal;
|
|
x: Integer;
|
|
FDSet: TFDSet;
|
|
begin
|
|
TimeV.tv_usec := (Timeout mod 1000) * 1000;
|
|
TimeV.tv_sec := Timeout div 1000;
|
|
TimeVal := @TimeV;
|
|
if Timeout = -1 then
|
|
TimeVal := nil;
|
|
FDSet := FFdSet;
|
|
x := synsock.Select(FSocket + 1, @FDSet, nil, nil, TimeVal);
|
|
SockCheck(x);
|
|
if FLastError <> 0 then
|
|
x := 0;
|
|
Result := x > 0;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
function TBlockSocket.CanRead(Timeout: Integer): Boolean;
|
|
var
|
|
ti, tr: Integer;
|
|
n: integer;
|
|
begin
|
|
if (FHeartbeatRate <> 0) and (Timeout <> -1) then
|
|
begin
|
|
ti := Timeout div FHeartbeatRate;
|
|
tr := Timeout mod FHeartbeatRate;
|
|
end
|
|
else
|
|
begin
|
|
ti := 0;
|
|
tr := Timeout;
|
|
end;
|
|
Result := InternalCanRead(tr);
|
|
if not Result then
|
|
for n := 0 to ti do
|
|
begin
|
|
DoHeartbeat;
|
|
if FStopFlag then
|
|
begin
|
|
Result := False;
|
|
FStopFlag := False;
|
|
Break;
|
|
end;
|
|
Result := InternalCanRead(FHeartbeatRate);
|
|
if Result then
|
|
break;
|
|
end;
|
|
ExceptCheck;
|
|
if Result then
|
|
DoStatus(HR_CanRead, '');
|
|
end;
|
|
|
|
function TBlockSocket.CanWrite(Timeout: Integer): Boolean;
|
|
{$IFDEF CIL}
|
|
begin
|
|
Result := FSocket.Poll(Timeout * 1000, SelectMode.SelectWrite);
|
|
{$ELSE}
|
|
var
|
|
TimeVal: PTimeVal;
|
|
TimeV: TTimeVal;
|
|
x: Integer;
|
|
FDSet: TFDSet;
|
|
begin
|
|
TimeV.tv_usec := (Timeout mod 1000) * 1000;
|
|
TimeV.tv_sec := Timeout div 1000;
|
|
TimeVal := @TimeV;
|
|
if Timeout = -1 then
|
|
TimeVal := nil;
|
|
FDSet := FFdSet;
|
|
x := synsock.Select(FSocket + 1, nil, @FDSet, nil, TimeVal);
|
|
SockCheck(x);
|
|
if FLastError <> 0 then
|
|
x := 0;
|
|
Result := x > 0;
|
|
{$ENDIF}
|
|
ExceptCheck;
|
|
if Result then
|
|
DoStatus(HR_CanWrite, '');
|
|
end;
|
|
|
|
function TBlockSocket.CanReadEx(Timeout: Integer): Boolean;
|
|
begin
|
|
if FBuffer <> '' then
|
|
Result := True
|
|
else
|
|
Result := CanRead(Timeout);
|
|
end;
|
|
|
|
function TBlockSocket.SendBufferTo(Buffer: TMemory; Length: Integer): Integer;
|
|
begin
|
|
Result := 0;
|
|
if TestStopFlag then
|
|
Exit;
|
|
DoMonitor(True, Buffer, Length);
|
|
LimitBandwidth(Length, FMaxSendBandwidth, FNextsend);
|
|
Result := synsock.SendTo(FSocket, Buffer, Length, MSG_NOSIGNAL, FRemoteSin);
|
|
SockCheck(Result);
|
|
ExceptCheck;
|
|
Inc(FSendCounter, Result);
|
|
DoStatus(HR_WriteCount, IntToStr(Result));
|
|
end;
|
|
|
|
function TBlockSocket.RecvBufferFrom(Buffer: TMemory; Length: Integer): Integer;
|
|
begin
|
|
Result := 0;
|
|
if TestStopFlag then
|
|
Exit;
|
|
LimitBandwidth(Length, FMaxRecvBandwidth, FNextRecv);
|
|
Result := synsock.RecvFrom(FSocket, Buffer, Length, MSG_NOSIGNAL, FRemoteSin);
|
|
SockCheck(Result);
|
|
ExceptCheck;
|
|
Inc(FRecvCounter, Result);
|
|
DoStatus(HR_ReadCount, IntToStr(Result));
|
|
DoMonitor(False, Buffer, Result);
|
|
end;
|
|
|
|
function TBlockSocket.GetSizeRecvBuffer: Integer;
|
|
var
|
|
l: Integer;
|
|
{$IFDEF CIL}
|
|
buf: TMemory;
|
|
{$ENDIF}
|
|
begin
|
|
{$IFDEF CIL}
|
|
setlength(buf, 4);
|
|
SockCheck(synsock.GetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_RCVBUF), buf, l));
|
|
Result := System.BitConverter.ToInt32(buf,0);
|
|
{$ELSE}
|
|
l := SizeOf(Result);
|
|
SockCheck(synsock.GetSockOpt(FSocket, SOL_SOCKET, SO_RCVBUF, @Result, l));
|
|
if FLastError <> 0 then
|
|
Result := 1024;
|
|
ExceptCheck;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
procedure TBlockSocket.SetSizeRecvBuffer(Size: Integer);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_RecvBuff;
|
|
d.Value := Size;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
function TBlockSocket.GetSizeSendBuffer: Integer;
|
|
var
|
|
l: Integer;
|
|
{$IFDEF CIL}
|
|
buf: TMemory;
|
|
{$ENDIF}
|
|
begin
|
|
{$IFDEF CIL}
|
|
setlength(buf, 4);
|
|
SockCheck(synsock.GetSockOpt(FSocket, integer(SOL_SOCKET), integer(SO_SNDBUF), buf, l));
|
|
Result := System.BitConverter.ToInt32(buf,0);
|
|
{$ELSE}
|
|
l := SizeOf(Result);
|
|
SockCheck(synsock.GetSockOpt(FSocket, SOL_SOCKET, SO_SNDBUF, @Result, l));
|
|
if FLastError <> 0 then
|
|
Result := 1024;
|
|
ExceptCheck;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
procedure TBlockSocket.SetSizeSendBuffer(Size: Integer);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_SendBuff;
|
|
d.Value := Size;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
procedure TBlockSocket.SetNonBlockMode(Value: Boolean);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_nonblock;
|
|
d.Enabled := Value;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
procedure TBlockSocket.SetTimeout(Timeout: Integer);
|
|
begin
|
|
SetSendTimeout(Timeout);
|
|
SetRecvTimeout(Timeout);
|
|
end;
|
|
|
|
procedure TBlockSocket.SetSendTimeout(Timeout: Integer);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_sendtimeout;
|
|
d.Value := Timeout;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
procedure TBlockSocket.SetRecvTimeout(Timeout: Integer);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_recvtimeout;
|
|
d.Value := Timeout;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
{$IFNDEF CIL}
|
|
function TBlockSocket.GroupCanRead(const SocketList: TList; Timeout: Integer;
|
|
const CanReadList: TList): boolean;
|
|
var
|
|
FDSet: TFDSet;
|
|
TimeVal: PTimeVal;
|
|
TimeV: TTimeVal;
|
|
x, n: Integer;
|
|
Max: Integer;
|
|
begin
|
|
TimeV.tv_usec := (Timeout mod 1000) * 1000;
|
|
TimeV.tv_sec := Timeout div 1000;
|
|
TimeVal := @TimeV;
|
|
if Timeout = -1 then
|
|
TimeVal := nil;
|
|
FD_ZERO(FDSet);
|
|
Max := 0;
|
|
for n := 0 to SocketList.Count - 1 do
|
|
if TObject(SocketList.Items[n]) is TBlockSocket then
|
|
begin
|
|
if TBlockSocket(SocketList.Items[n]).Socket > Max then
|
|
Max := TBlockSocket(SocketList.Items[n]).Socket;
|
|
FD_SET(TBlockSocket(SocketList.Items[n]).Socket, FDSet);
|
|
end;
|
|
x := synsock.Select(Max + 1, @FDSet, nil, nil, TimeVal);
|
|
SockCheck(x);
|
|
ExceptCheck;
|
|
if FLastError <> 0 then
|
|
x := 0;
|
|
Result := x > 0;
|
|
CanReadList.Clear;
|
|
if Result then
|
|
for n := 0 to SocketList.Count - 1 do
|
|
if TObject(SocketList.Items[n]) is TBlockSocket then
|
|
if FD_ISSET(TBlockSocket(SocketList.Items[n]).Socket, FDSet) then
|
|
CanReadList.Add(TBlockSocket(SocketList.Items[n]));
|
|
end;
|
|
{$ENDIF}
|
|
|
|
procedure TBlockSocket.EnableReuse(Value: Boolean);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_reuse;
|
|
d.Enabled := Value;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
procedure TBlockSocket.SetTTL(TTL: integer);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_TTL;
|
|
d.Value := TTL;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
function TBlockSocket.GetTTL:integer;
|
|
var
|
|
l: Integer;
|
|
begin
|
|
{$IFNDEF CIL}
|
|
l := SizeOf(Result);
|
|
if FIP6Used then
|
|
synsock.GetSockOpt(FSocket, IPPROTO_IPV6, IPV6_UNICAST_HOPS, @Result, l)
|
|
else
|
|
synsock.GetSockOpt(FSocket, IPPROTO_IP, IP_TTL, @Result, l);
|
|
{$ENDIF}
|
|
end;
|
|
|
|
procedure TBlockSocket.SetFamily(Value: TSocketFamily);
|
|
begin
|
|
FFamily := Value;
|
|
FFamilySave := Value;
|
|
end;
|
|
|
|
procedure TBlockSocket.SetSocket(Value: TSocket);
|
|
begin
|
|
FRecvCounter := 0;
|
|
FSendCounter := 0;
|
|
FSocket := Value;
|
|
{$IFNDEF CIL}
|
|
FD_ZERO(FFDSet);
|
|
FD_SET(FSocket, FFDSet);
|
|
{$ENDIF}
|
|
GetSins;
|
|
FIP6Used := FRemoteSin.AddressFamily = AF_INET6;
|
|
end;
|
|
|
|
function TBlockSocket.GetWsaData: TWSAData;
|
|
begin
|
|
{$IFDEF ONCEWINSOCK}
|
|
Result := WsaDataOnce;
|
|
{$ELSE}
|
|
Result := FWsaDataOnce;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
function TBlockSocket.GetSocketType: integer;
|
|
begin
|
|
Result := 0;
|
|
end;
|
|
|
|
function TBlockSocket.GetSocketProtocol: integer;
|
|
begin
|
|
Result := integer(IPPROTO_IP);
|
|
end;
|
|
|
|
procedure TBlockSocket.DoStatus(Reason: THookSocketReason; const Value: string);
|
|
begin
|
|
if assigned(OnStatus) then
|
|
OnStatus(Self, Reason, Value);
|
|
end;
|
|
|
|
procedure TBlockSocket.DoReadFilter(Buffer: TMemory; var Len: Integer);
|
|
var
|
|
s: AnsiString;
|
|
begin
|
|
if assigned(OnReadFilter) then
|
|
if Len > 0 then
|
|
begin
|
|
{$IFDEF CIL}
|
|
s := StringOf(Buffer);
|
|
{$ELSE}
|
|
SetLength(s, Len);
|
|
Move(Buffer^, Pointer(s)^, Len);
|
|
{$ENDIF}
|
|
OnReadFilter(Self, s);
|
|
if Length(s) > Len then
|
|
SetLength(s, Len);
|
|
Len := Length(s);
|
|
{$IFDEF CIL}
|
|
Buffer := BytesOf(s);
|
|
{$ELSE}
|
|
Move(Pointer(s)^, Buffer^, Len);
|
|
{$ENDIF}
|
|
end;
|
|
end;
|
|
|
|
procedure TBlockSocket.DoCreateSocket;
|
|
begin
|
|
if assigned(OnCreateSocket) then
|
|
OnCreateSocket(Self);
|
|
end;
|
|
|
|
procedure TBlockSocket.DoMonitor(Writing: Boolean; const Buffer: TMemory; Len: Integer);
|
|
begin
|
|
if assigned(OnMonitor) then
|
|
begin
|
|
OnMonitor(Self, Writing, Buffer, Len);
|
|
end;
|
|
end;
|
|
|
|
procedure TBlockSocket.DoHeartbeat;
|
|
begin
|
|
if assigned(OnHeartbeat) and (FHeartbeatRate <> 0) then
|
|
begin
|
|
OnHeartbeat(Self);
|
|
end;
|
|
end;
|
|
|
|
function TBlockSocket.GetErrorDescEx: string;
|
|
begin
|
|
Result := GetErrorDesc(FLastError);
|
|
end;
|
|
|
|
class function TBlockSocket.GetErrorDesc(ErrorCode: Integer): string;
|
|
begin
|
|
{$IFDEF CIL}
|
|
if ErrorCode = 0 then
|
|
Result := ''
|
|
else
|
|
begin
|
|
Result := WSAGetLastErrorDesc;
|
|
if Result = '' then
|
|
Result := 'Other Winsock error (' + IntToStr(ErrorCode) + ')';
|
|
end;
|
|
{$ELSE}
|
|
case ErrorCode of
|
|
0:
|
|
Result := '';
|
|
WSAEINTR: {10004}
|
|
Result := 'Interrupted system call';
|
|
WSAEBADF: {10009}
|
|
Result := 'Bad file number';
|
|
WSAEACCES: {10013}
|
|
Result := 'Permission denied';
|
|
WSAEFAULT: {10014}
|
|
Result := 'Bad address';
|
|
WSAEINVAL: {10022}
|
|
Result := 'Invalid argument';
|
|
WSAEMFILE: {10024}
|
|
Result := 'Too many open files';
|
|
WSAEWOULDBLOCK: {10035}
|
|
Result := 'Operation would block';
|
|
WSAEINPROGRESS: {10036}
|
|
Result := 'Operation now in progress';
|
|
WSAEALREADY: {10037}
|
|
Result := 'Operation already in progress';
|
|
WSAENOTSOCK: {10038}
|
|
Result := 'Socket operation on nonsocket';
|
|
WSAEDESTADDRREQ: {10039}
|
|
Result := 'Destination address required';
|
|
WSAEMSGSIZE: {10040}
|
|
Result := 'Message too long';
|
|
WSAEPROTOTYPE: {10041}
|
|
Result := 'Protocol wrong type for Socket';
|
|
WSAENOPROTOOPT: {10042}
|
|
Result := 'Protocol not available';
|
|
WSAEPROTONOSUPPORT: {10043}
|
|
Result := 'Protocol not supported';
|
|
WSAESOCKTNOSUPPORT: {10044}
|
|
Result := 'Socket not supported';
|
|
WSAEOPNOTSUPP: {10045}
|
|
Result := 'Operation not supported on Socket';
|
|
WSAEPFNOSUPPORT: {10046}
|
|
Result := 'Protocol family not supported';
|
|
WSAEAFNOSUPPORT: {10047}
|
|
Result := 'Address family not supported';
|
|
WSAEADDRINUSE: {10048}
|
|
Result := 'Address already in use';
|
|
WSAEADDRNOTAVAIL: {10049}
|
|
Result := 'Can''t assign requested address';
|
|
WSAENETDOWN: {10050}
|
|
Result := 'Network is down';
|
|
WSAENETUNREACH: {10051}
|
|
Result := 'Network is unreachable';
|
|
WSAENETRESET: {10052}
|
|
Result := 'Network dropped connection on reset';
|
|
WSAECONNABORTED: {10053}
|
|
Result := 'Software caused connection abort';
|
|
WSAECONNRESET: {10054}
|
|
Result := 'Connection reset by peer';
|
|
WSAENOBUFS: {10055}
|
|
Result := 'No Buffer space available';
|
|
WSAEISCONN: {10056}
|
|
Result := 'Socket is already connected';
|
|
WSAENOTCONN: {10057}
|
|
Result := 'Socket is not connected';
|
|
WSAESHUTDOWN: {10058}
|
|
Result := 'Can''t send after Socket shutdown';
|
|
WSAETOOMANYREFS: {10059}
|
|
Result := 'Too many references:can''t splice';
|
|
WSAETIMEDOUT: {10060}
|
|
Result := 'Connection timed out';
|
|
WSAECONNREFUSED: {10061}
|
|
Result := 'Connection refused';
|
|
WSAELOOP: {10062}
|
|
Result := 'Too many levels of symbolic links';
|
|
WSAENAMETOOLONG: {10063}
|
|
Result := 'File name is too long';
|
|
WSAEHOSTDOWN: {10064}
|
|
Result := 'Host is down';
|
|
WSAEHOSTUNREACH: {10065}
|
|
Result := 'No route to host';
|
|
WSAENOTEMPTY: {10066}
|
|
Result := 'Directory is not empty';
|
|
WSAEPROCLIM: {10067}
|
|
Result := 'Too many processes';
|
|
WSAEUSERS: {10068}
|
|
Result := 'Too many users';
|
|
WSAEDQUOT: {10069}
|
|
Result := 'Disk quota exceeded';
|
|
WSAESTALE: {10070}
|
|
Result := 'Stale NFS file handle';
|
|
WSAEREMOTE: {10071}
|
|
Result := 'Too many levels of remote in path';
|
|
WSASYSNOTREADY: {10091}
|
|
Result := 'Network subsystem is unusable';
|
|
WSAVERNOTSUPPORTED: {10092}
|
|
Result := 'Winsock DLL cannot support this application';
|
|
WSANOTINITIALISED: {10093}
|
|
Result := 'Winsock not initialized';
|
|
WSAEDISCON: {10101}
|
|
Result := 'Disconnect';
|
|
WSAHOST_NOT_FOUND: {11001}
|
|
Result := 'Host not found';
|
|
WSATRY_AGAIN: {11002}
|
|
Result := 'Non authoritative - host not found';
|
|
WSANO_RECOVERY: {11003}
|
|
Result := 'Non recoverable error';
|
|
WSANO_DATA: {11004}
|
|
Result := 'Valid name, no data record of requested type'
|
|
else
|
|
Result := 'Other Winsock error (' + IntToStr(ErrorCode) + ')';
|
|
end;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
constructor TSocksBlockSocket.Create;
|
|
begin
|
|
inherited Create;
|
|
FSocksIP:= '';
|
|
FSocksPort:= '1080';
|
|
FSocksTimeout:= 60000;
|
|
FSocksUsername:= '';
|
|
FSocksPassword:= '';
|
|
FUsingSocks := False;
|
|
FSocksResolver := True;
|
|
FSocksLastError := 0;
|
|
FSocksResponseIP := '';
|
|
FSocksResponsePort := '';
|
|
FSocksLocalIP := '';
|
|
FSocksLocalPort := '';
|
|
FSocksRemoteIP := '';
|
|
FSocksRemotePort := '';
|
|
FBypassFlag := False;
|
|
FSocksType := ST_Socks5;
|
|
end;
|
|
|
|
function TSocksBlockSocket.SocksOpen: boolean;
|
|
var
|
|
Buf: AnsiString;
|
|
n: integer;
|
|
begin
|
|
Result := False;
|
|
FUsingSocks := False;
|
|
if FSocksType <> ST_Socks5 then
|
|
begin
|
|
FUsingSocks := True;
|
|
Result := True;
|
|
end
|
|
else
|
|
begin
|
|
FBypassFlag := True;
|
|
try
|
|
if FSocksUsername = '' then
|
|
Buf := #5 + #1 + #0
|
|
else
|
|
Buf := #5 + #2 + #2 +#0;
|
|
SendString(Buf);
|
|
Buf := RecvBufferStr(2, FSocksTimeout);
|
|
if Length(Buf) < 2 then
|
|
Exit;
|
|
if Buf[1] <> #5 then
|
|
Exit;
|
|
n := Ord(Buf[2]);
|
|
case n of
|
|
0: //not need authorisation
|
|
;
|
|
2:
|
|
begin
|
|
Buf := #1 + AnsiChar(Length(FSocksUsername)) + FSocksUsername
|
|
+ AnsiChar(Length(FSocksPassword)) + FSocksPassword;
|
|
SendString(Buf);
|
|
Buf := RecvBufferStr(2, FSocksTimeout);
|
|
if Length(Buf) < 2 then
|
|
Exit;
|
|
if Buf[2] <> #0 then
|
|
Exit;
|
|
end;
|
|
else
|
|
//other authorisation is not supported!
|
|
Exit;
|
|
end;
|
|
FUsingSocks := True;
|
|
Result := True;
|
|
finally
|
|
FBypassFlag := False;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function TSocksBlockSocket.SocksRequest(Cmd: Byte;
|
|
const IP, Port: string): Boolean;
|
|
var
|
|
Buf: AnsiString;
|
|
begin
|
|
FBypassFlag := True;
|
|
try
|
|
if FSocksType <> ST_Socks5 then
|
|
Buf := #4 + AnsiChar(Cmd) + SocksCode(IP, Port)
|
|
else
|
|
Buf := #5 + AnsiChar(Cmd) + #0 + SocksCode(IP, Port);
|
|
SendString(Buf);
|
|
Result := FLastError = 0;
|
|
finally
|
|
FBypassFlag := False;
|
|
end;
|
|
end;
|
|
|
|
function TSocksBlockSocket.SocksResponse: Boolean;
|
|
var
|
|
Buf, s: AnsiString;
|
|
x: integer;
|
|
begin
|
|
Result := False;
|
|
FBypassFlag := True;
|
|
try
|
|
FSocksResponseIP := '';
|
|
FSocksResponsePort := '';
|
|
FSocksLastError := -1;
|
|
if FSocksType <> ST_Socks5 then
|
|
begin
|
|
Buf := RecvBufferStr(8, FSocksTimeout);
|
|
if FLastError <> 0 then
|
|
Exit;
|
|
if Buf[1] <> #0 then
|
|
Exit;
|
|
FSocksLastError := Ord(Buf[2]);
|
|
end
|
|
else
|
|
begin
|
|
Buf := RecvBufferStr(4, FSocksTimeout);
|
|
if FLastError <> 0 then
|
|
Exit;
|
|
if Buf[1] <> #5 then
|
|
Exit;
|
|
case Ord(Buf[4]) of
|
|
1:
|
|
s := RecvBufferStr(4, FSocksTimeout);
|
|
3:
|
|
begin
|
|
x := RecvByte(FSocksTimeout);
|
|
if FLastError <> 0 then
|
|
Exit;
|
|
s := AnsiChar(x) + RecvBufferStr(x, FSocksTimeout);
|
|
end;
|
|
4:
|
|
s := RecvBufferStr(16, FSocksTimeout);
|
|
else
|
|
Exit;
|
|
end;
|
|
Buf := Buf + s + RecvBufferStr(2, FSocksTimeout);
|
|
if FLastError <> 0 then
|
|
Exit;
|
|
FSocksLastError := Ord(Buf[2]);
|
|
end;
|
|
if ((FSocksLastError <> 0) and (FSocksLastError <> 90)) then
|
|
Exit;
|
|
SocksDecode(Buf);
|
|
Result := True;
|
|
finally
|
|
FBypassFlag := False;
|
|
end;
|
|
end;
|
|
|
|
function TSocksBlockSocket.SocksCode(IP, Port: string): Ansistring;
|
|
var
|
|
ip6: TIp6Bytes;
|
|
n: integer;
|
|
begin
|
|
if FSocksType <> ST_Socks5 then
|
|
begin
|
|
Result := CodeInt(ResolvePort(Port));
|
|
if not FSocksResolver then
|
|
IP := ResolveName(IP);
|
|
if IsIP(IP) then
|
|
begin
|
|
Result := Result + IPToID(IP);
|
|
Result := Result + FSocksUsername + #0;
|
|
end
|
|
else
|
|
begin
|
|
Result := Result + IPToID('0.0.0.1');
|
|
Result := Result + FSocksUsername + #0;
|
|
Result := Result + IP + #0;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
if not FSocksResolver then
|
|
IP := ResolveName(IP);
|
|
if IsIP(IP) then
|
|
Result := #1 + IPToID(IP)
|
|
else
|
|
if IsIP6(IP) then
|
|
begin
|
|
ip6 := StrToIP6(IP);
|
|
Result := #4;
|
|
for n := 0 to 15 do
|
|
Result := Result + AnsiChar(ip6[n]);
|
|
end
|
|
else
|
|
Result := #3 + AnsiChar(Length(IP)) + IP;
|
|
Result := Result + CodeInt(ResolvePort(Port));
|
|
end;
|
|
end;
|
|
|
|
function TSocksBlockSocket.SocksDecode(Value: Ansistring): integer;
|
|
var
|
|
Atyp: Byte;
|
|
y, n: integer;
|
|
w: Word;
|
|
ip6: TIp6Bytes;
|
|
begin
|
|
FSocksResponsePort := '0';
|
|
Result := 0;
|
|
if FSocksType <> ST_Socks5 then
|
|
begin
|
|
if Length(Value) < 8 then
|
|
Exit;
|
|
Result := 3;
|
|
w := DecodeInt(Value, Result);
|
|
FSocksResponsePort := IntToStr(w);
|
|
FSocksResponseIP := Format('%d.%d.%d.%d',
|
|
[Ord(Value[5]), Ord(Value[6]), Ord(Value[7]), Ord(Value[8])]);
|
|
Result := 9;
|
|
end
|
|
else
|
|
begin
|
|
if Length(Value) < 4 then
|
|
Exit;
|
|
Atyp := Ord(Value[4]);
|
|
Result := 5;
|
|
case Atyp of
|
|
1:
|
|
begin
|
|
if Length(Value) < 10 then
|
|
Exit;
|
|
FSocksResponseIP := Format('%d.%d.%d.%d',
|
|
[Ord(Value[5]), Ord(Value[6]), Ord(Value[7]), Ord(Value[8])]);
|
|
Result := 9;
|
|
end;
|
|
3:
|
|
begin
|
|
y := Ord(Value[5]);
|
|
if Length(Value) < (5 + y + 2) then
|
|
Exit;
|
|
for n := 6 to 6 + y - 1 do
|
|
FSocksResponseIP := FSocksResponseIP + Value[n];
|
|
Result := 5 + y + 1;
|
|
end;
|
|
4:
|
|
begin
|
|
if Length(Value) < 22 then
|
|
Exit;
|
|
for n := 0 to 15 do
|
|
ip6[n] := ord(Value[n + 5]);
|
|
FSocksResponseIP := IP6ToStr(ip6);
|
|
Result := 21;
|
|
end;
|
|
else
|
|
Exit;
|
|
end;
|
|
w := DecodeInt(Value, Result);
|
|
FSocksResponsePort := IntToStr(w);
|
|
Result := Result + 2;
|
|
end;
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
procedure TDgramBlockSocket.Connect(IP, Port: string);
|
|
begin
|
|
SetRemoteSin(IP, Port);
|
|
InternalCreateSocket(FRemoteSin);
|
|
FBuffer := '';
|
|
DoStatus(HR_Connect, IP + ':' + Port);
|
|
end;
|
|
|
|
function TDgramBlockSocket.RecvBuffer(Buffer: TMemory; Length: Integer): Integer;
|
|
begin
|
|
Result := RecvBufferFrom(Buffer, Length);
|
|
end;
|
|
|
|
function TDgramBlockSocket.SendBuffer(Buffer: TMemory; Length: Integer): Integer;
|
|
begin
|
|
Result := SendBufferTo(Buffer, Length);
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
destructor TUDPBlockSocket.Destroy;
|
|
begin
|
|
if Assigned(FSocksControlSock) then
|
|
FSocksControlSock.Free;
|
|
inherited;
|
|
end;
|
|
|
|
procedure TUDPBlockSocket.EnableBroadcast(Value: Boolean);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_Broadcast;
|
|
d.Enabled := Value;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
function TUDPBlockSocket.UdpAssociation: Boolean;
|
|
var
|
|
b: Boolean;
|
|
begin
|
|
Result := True;
|
|
FUsingSocks := False;
|
|
if FSocksIP <> '' then
|
|
begin
|
|
Result := False;
|
|
if not Assigned(FSocksControlSock) then
|
|
FSocksControlSock := TTCPBlockSocket.Create;
|
|
FSocksControlSock.CloseSocket;
|
|
FSocksControlSock.CreateSocketByName(FSocksIP);
|
|
FSocksControlSock.Connect(FSocksIP, FSocksPort);
|
|
if FSocksControlSock.LastError <> 0 then
|
|
Exit;
|
|
// if not assigned local port, assign it!
|
|
if not FBinded then
|
|
Bind(cAnyHost, cAnyPort);
|
|
//open control TCP connection to SOCKS
|
|
FSocksControlSock.FSocksUsername := FSocksUsername;
|
|
FSocksControlSock.FSocksPassword := FSocksPassword;
|
|
b := FSocksControlSock.SocksOpen;
|
|
if b then
|
|
b := FSocksControlSock.SocksRequest(3, GetLocalSinIP, IntToStr(GetLocalSinPort));
|
|
if b then
|
|
b := FSocksControlSock.SocksResponse;
|
|
if not b and (FLastError = 0) then
|
|
FLastError := WSANO_RECOVERY;
|
|
FUsingSocks :=FSocksControlSock.UsingSocks;
|
|
FSocksRemoteIP := FSocksControlSock.FSocksResponseIP;
|
|
FSocksRemotePort := FSocksControlSock.FSocksResponsePort;
|
|
Result := b and (FLastError = 0);
|
|
end;
|
|
end;
|
|
|
|
function TUDPBlockSocket.SendBufferTo(Buffer: TMemory; Length: Integer): Integer;
|
|
var
|
|
SIp: string;
|
|
SPort: integer;
|
|
Buf: Ansistring;
|
|
begin
|
|
Result := 0;
|
|
FUsingSocks := False;
|
|
if (FSocksIP <> '') and (not UdpAssociation) then
|
|
FLastError := WSANO_RECOVERY
|
|
else
|
|
begin
|
|
if FUsingSocks then
|
|
begin
|
|
{$IFNDEF CIL}
|
|
Sip := GetRemoteSinIp;
|
|
SPort := GetRemoteSinPort;
|
|
SetRemoteSin(FSocksRemoteIP, FSocksRemotePort);
|
|
SetLength(Buf,Length);
|
|
Move(Buffer^, Pointer(Buf)^, Length);
|
|
Buf := #0 + #0 + #0 + SocksCode(Sip, IntToStr(SPort)) + Buf;
|
|
Result := inherited SendBufferTo(Pointer(Buf), System.Length(buf));
|
|
SetRemoteSin(Sip, IntToStr(SPort));
|
|
{$ENDIF}
|
|
end
|
|
else
|
|
Result := inherited SendBufferTo(Buffer, Length);
|
|
end;
|
|
end;
|
|
|
|
function TUDPBlockSocket.RecvBufferFrom(Buffer: TMemory; Length: Integer): Integer;
|
|
var
|
|
Buf: Ansistring;
|
|
x: integer;
|
|
begin
|
|
Result := inherited RecvBufferFrom(Buffer, Length);
|
|
if FUsingSocks then
|
|
begin
|
|
{$IFNDEF CIL}
|
|
SetLength(Buf, Result);
|
|
Move(Buffer^, Pointer(Buf)^, Result);
|
|
x := SocksDecode(Buf);
|
|
Result := Result - x + 1;
|
|
Buf := Copy(Buf, x, Result);
|
|
Move(Pointer(Buf)^, Buffer^, Result);
|
|
SetRemoteSin(FSocksResponseIP, FSocksResponsePort);
|
|
{$ENDIF}
|
|
end;
|
|
end;
|
|
|
|
{$IFNDEF CIL}
|
|
procedure TUDPBlockSocket.AddMulticast(MCastIP: string);
|
|
var
|
|
Multicast: TIP_mreq;
|
|
Multicast6: TIPv6_mreq;
|
|
n: integer;
|
|
ip6: Tip6bytes;
|
|
begin
|
|
if FIP6Used then
|
|
begin
|
|
ip6 := StrToIp6(MCastIP);
|
|
for n := 0 to 15 do
|
|
Multicast6.ipv6mr_multiaddr.u6_addr8[n] := Ip6[n];
|
|
Multicast6.ipv6mr_interface := 0;
|
|
SockCheck(synsock.SetSockOpt(FSocket, IPPROTO_IPV6, IPV6_JOIN_GROUP,
|
|
PAnsiChar(@Multicast6), SizeOf(Multicast6)));
|
|
end
|
|
else
|
|
begin
|
|
Multicast.imr_multiaddr.S_addr := swapbytes(strtoip(MCastIP));
|
|
Multicast.imr_interface.S_addr := INADDR_ANY;
|
|
SockCheck(synsock.SetSockOpt(FSocket, IPPROTO_IP, IP_ADD_MEMBERSHIP,
|
|
PAnsiChar(@Multicast), SizeOf(Multicast)));
|
|
end;
|
|
ExceptCheck;
|
|
end;
|
|
|
|
procedure TUDPBlockSocket.DropMulticast(MCastIP: string);
|
|
var
|
|
Multicast: TIP_mreq;
|
|
Multicast6: TIPv6_mreq;
|
|
n: integer;
|
|
ip6: Tip6bytes;
|
|
begin
|
|
if FIP6Used then
|
|
begin
|
|
ip6 := StrToIp6(MCastIP);
|
|
for n := 0 to 15 do
|
|
Multicast6.ipv6mr_multiaddr.u6_addr8[n] := Ip6[n];
|
|
Multicast6.ipv6mr_interface := 0;
|
|
SockCheck(synsock.SetSockOpt(FSocket, IPPROTO_IPV6, IPV6_LEAVE_GROUP,
|
|
PAnsiChar(@Multicast6), SizeOf(Multicast6)));
|
|
end
|
|
else
|
|
begin
|
|
Multicast.imr_multiaddr.S_addr := swapbytes(strtoip(MCastIP));
|
|
Multicast.imr_interface.S_addr := INADDR_ANY;
|
|
SockCheck(synsock.SetSockOpt(FSocket, IPPROTO_IP, IP_DROP_MEMBERSHIP,
|
|
PAnsiChar(@Multicast), SizeOf(Multicast)));
|
|
end;
|
|
ExceptCheck;
|
|
end;
|
|
{$ENDIF}
|
|
|
|
procedure TUDPBlockSocket.SetMulticastTTL(TTL: integer);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_MulticastTTL;
|
|
d.Value := TTL;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
function TUDPBlockSocket.GetMulticastTTL:integer;
|
|
var
|
|
l: Integer;
|
|
begin
|
|
{$IFNDEF CIL}
|
|
l := SizeOf(Result);
|
|
if FIP6Used then
|
|
synsock.GetSockOpt(FSocket, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, @Result, l)
|
|
else
|
|
synsock.GetSockOpt(FSocket, IPPROTO_IP, IP_MULTICAST_TTL, @Result, l);
|
|
{$ENDIF}
|
|
end;
|
|
|
|
procedure TUDPBlockSocket.EnableMulticastLoop(Value: Boolean);
|
|
var
|
|
d: TSynaOption;
|
|
begin
|
|
d := TSynaOption.Create;
|
|
d.Option := SOT_MulticastLoop;
|
|
d.Enabled := Value;
|
|
DelayedOption(d);
|
|
end;
|
|
|
|
function TUDPBlockSocket.GetSocketType: integer;
|
|
begin
|
|
Result := integer(SOCK_DGRAM);
|
|
end;
|
|
|
|
function TUDPBlockSocket.GetSocketProtocol: integer;
|
|
begin
|
|
Result := integer(IPPROTO_UDP);
|
|
end;
|
|
|
|
{======================================================================}
|
|
constructor TTCPBlockSocket.CreateWithSSL(SSLPlugin: TSSLClass);
|
|
begin
|
|
inherited Create;
|
|
FSSL := SSLPlugin.Create(self);
|
|
FHTTPTunnelIP := '';
|
|
FHTTPTunnelPort := '';
|
|
FHTTPTunnel := False;
|
|
FHTTPTunnelRemoteIP := '';
|
|
FHTTPTunnelRemotePort := '';
|
|
FHTTPTunnelUser := '';
|
|
FHTTPTunnelPass := '';
|
|
FHTTPTunnelTimeout := 30000;
|
|
end;
|
|
|
|
constructor TTCPBlockSocket.Create;
|
|
begin
|
|
CreateWithSSL(SSLImplementation);
|
|
end;
|
|
|
|
destructor TTCPBlockSocket.Destroy;
|
|
begin
|
|
inherited Destroy;
|
|
FSSL.Free;
|
|
end;
|
|
|
|
function TTCPBlockSocket.GetErrorDescEx: string;
|
|
begin
|
|
Result := inherited GetErrorDescEx;
|
|
if (FLastError = WSASYSNOTREADY) and (self.SSL.LastError <> 0) then
|
|
begin
|
|
Result := self.SSL.LastErrorDesc;
|
|
end;
|
|
end;
|
|
|
|
procedure TTCPBlockSocket.CloseSocket;
|
|
begin
|
|
if FSSL.SSLEnabled then
|
|
FSSL.Shutdown;
|
|
if (FSocket <> INVALID_SOCKET) and (FLastError = 0) then
|
|
begin
|
|
Synsock.Shutdown(FSocket, 1);
|
|
Purge;
|
|
end;
|
|
inherited CloseSocket;
|
|
end;
|
|
|
|
procedure TTCPBlockSocket.DoAfterConnect;
|
|
begin
|
|
if assigned(OnAfterConnect) then
|
|
begin
|
|
OnAfterConnect(Self);
|
|
end;
|
|
end;
|
|
|
|
function TTCPBlockSocket.WaitingData: Integer;
|
|
begin
|
|
Result := 0;
|
|
if FSSL.SSLEnabled and (FSocket <> INVALID_SOCKET) then
|
|
Result := FSSL.WaitingData;
|
|
if Result = 0 then
|
|
Result := inherited WaitingData;
|
|
end;
|
|
|
|
procedure TTCPBlockSocket.Listen;
|
|
var
|
|
b: Boolean;
|
|
Sip,SPort: string;
|
|
begin
|
|
if FSocksIP = '' then
|
|
begin
|
|
inherited Listen;
|
|
end
|
|
else
|
|
begin
|
|
Sip := GetLocalSinIP;
|
|
if Sip = cAnyHost then
|
|
Sip := LocalName;
|
|
SPort := IntToStr(GetLocalSinPort);
|
|
inherited Connect(FSocksIP, FSocksPort);
|
|
b := SocksOpen;
|
|
if b then
|
|
b := SocksRequest(2, Sip, SPort);
|
|
if b then
|
|
b := SocksResponse;
|
|
if not b and (FLastError = 0) then
|
|
FLastError := WSANO_RECOVERY;
|
|
FSocksLocalIP := FSocksResponseIP;
|
|
if FSocksLocalIP = cAnyHost then
|
|
FSocksLocalIP := FSocksIP;
|
|
FSocksLocalPort := FSocksResponsePort;
|
|
FSocksRemoteIP := '';
|
|
FSocksRemotePort := '';
|
|
ExceptCheck;
|
|
DoStatus(HR_Listen, '');
|
|
end;
|
|
end;
|
|
|
|
function TTCPBlockSocket.Accept: TSocket;
|
|
begin
|
|
if FUsingSocks then
|
|
begin
|
|
if not SocksResponse and (FLastError = 0) then
|
|
FLastError := WSANO_RECOVERY;
|
|
FSocksRemoteIP := FSocksResponseIP;
|
|
FSocksRemotePort := FSocksResponsePort;
|
|
Result := FSocket;
|
|
ExceptCheck;
|
|
DoStatus(HR_Accept, '');
|
|
end
|
|
else
|
|
begin
|
|
result := inherited Accept;
|
|
end;
|
|
end;
|
|
|
|
procedure TTCPBlockSocket.Connect(IP, Port: string);
|
|
begin
|
|
if FSocksIP <> '' then
|
|
SocksDoConnect(IP, Port)
|
|
else
|
|
if FHTTPTunnelIP <> '' then
|
|
HTTPTunnelDoConnect(IP, Port)
|
|
else
|
|
inherited Connect(IP, Port);
|
|
if FLasterror = 0 then
|
|
DoAfterConnect;
|
|
end;
|
|
|
|
procedure TTCPBlockSocket.SocksDoConnect(IP, Port: string);
|
|
var
|
|
b: Boolean;
|
|
begin
|
|
inherited Connect(FSocksIP, FSocksPort);
|
|
if FLastError = 0 then
|
|
begin
|
|
b := SocksOpen;
|
|
if b then
|
|
b := SocksRequest(1, IP, Port);
|
|
if b then
|
|
b := SocksResponse;
|
|
if not b and (FLastError = 0) then
|
|
FLastError := WSASYSNOTREADY;
|
|
FSocksLocalIP := FSocksResponseIP;
|
|
FSocksLocalPort := FSocksResponsePort;
|
|
FSocksRemoteIP := IP;
|
|
FSocksRemotePort := Port;
|
|
end;
|
|
ExceptCheck;
|
|
DoStatus(HR_Connect, IP + ':' + Port);
|
|
end;
|
|
|
|
procedure TTCPBlockSocket.HTTPTunnelDoConnect(IP, Port: string);
|
|
//bugfixed by Mike Green (mgreen@emixode.com)
|
|
var
|
|
s: string;
|
|
begin
|
|
Port := IntToStr(ResolvePort(Port));
|
|
inherited Connect(FHTTPTunnelIP, FHTTPTunnelPort);
|
|
if FLastError <> 0 then
|
|
Exit;
|
|
FHTTPTunnel := False;
|
|
if IsIP6(IP) then
|
|
IP := '[' + IP + ']';
|
|
SendString('CONNECT ' + IP + ':' + Port + ' HTTP/1.0' + CRLF);
|
|
if FHTTPTunnelUser <> '' then
|
|
Sendstring('Proxy-Authorization: Basic ' +
|
|
EncodeBase64(FHTTPTunnelUser + ':' + FHTTPTunnelPass) + CRLF);
|
|
SendString(CRLF);
|
|
repeat
|
|
s := RecvTerminated(FHTTPTunnelTimeout, #$0a);
|
|
if FLastError <> 0 then
|
|
Break;
|
|
if (Pos('HTTP/', s) = 1) and (Length(s) > 11) then
|
|
FHTTPTunnel := s[10] = '2';
|
|
until (s = '') or (s = #$0d);
|
|
if (FLasterror = 0) and not FHTTPTunnel then
|
|
FLastError := WSASYSNOTREADY;
|
|
FHTTPTunnelRemoteIP := IP;
|
|
FHTTPTunnelRemotePort := Port;
|
|
ExceptCheck;
|
|
end;
|
|
|
|
procedure TTCPBlockSocket.SSLDoConnect;
|
|
begin
|
|
ResetLastError;
|
|
if not FSSL.Connect then
|
|
FLastError := WSASYSNOTREADY;
|
|
ExceptCheck;
|
|
end;
|
|
|
|
procedure TTCPBlockSocket.SSLDoShutdown;
|
|
begin
|
|
ResetLastError;
|
|
FSSL.BiShutdown;
|
|
end;
|
|
|
|
function TTCPBlockSocket.GetLocalSinIP: string;
|
|
begin
|
|
if FUsingSocks then
|
|
Result := FSocksLocalIP
|
|
else
|
|
Result := inherited GetLocalSinIP;
|
|
end;
|
|
|
|
function TTCPBlockSocket.GetRemoteSinIP: string;
|
|
begin
|
|
if FUsingSocks then
|
|
Result := FSocksRemoteIP
|
|
else
|
|
if FHTTPTunnel then
|
|
Result := FHTTPTunnelRemoteIP
|
|
else
|
|
Result := inherited GetRemoteSinIP;
|
|
end;
|
|
|
|
function TTCPBlockSocket.GetLocalSinPort: Integer;
|
|
begin
|
|
if FUsingSocks then
|
|
Result := StrToIntDef(FSocksLocalPort, 0)
|
|
else
|
|
Result := inherited GetLocalSinPort;
|
|
end;
|
|
|
|
function TTCPBlockSocket.GetRemoteSinPort: Integer;
|
|
begin
|
|
if FUsingSocks then
|
|
Result := ResolvePort(FSocksRemotePort)
|
|
else
|
|
if FHTTPTunnel then
|
|
Result := StrToIntDef(FHTTPTunnelRemotePort, 0)
|
|
else
|
|
Result := inherited GetRemoteSinPort;
|
|
end;
|
|
|
|
function TTCPBlockSocket.RecvBuffer(Buffer: TMemory; Len: Integer): Integer;
|
|
begin
|
|
if FSSL.SSLEnabled then
|
|
begin
|
|
Result := 0;
|
|
if TestStopFlag then
|
|
Exit;
|
|
ResetLastError;
|
|
LimitBandwidth(Len, FMaxRecvBandwidth, FNextRecv);
|
|
Result := FSSL.RecvBuffer(Buffer, Len);
|
|
if FSSL.LastError <> 0 then
|
|
FLastError := WSASYSNOTREADY;
|
|
ExceptCheck;
|
|
Inc(FRecvCounter, Result);
|
|
DoStatus(HR_ReadCount, IntToStr(Result));
|
|
DoMonitor(False, Buffer, Result);
|
|
DoReadFilter(Buffer, Result);
|
|
end
|
|
else
|
|
Result := inherited RecvBuffer(Buffer, Len);
|
|
end;
|
|
|
|
function TTCPBlockSocket.SendBuffer(Buffer: TMemory; Length: Integer): Integer;
|
|
var
|
|
x, y: integer;
|
|
l, r: integer;
|
|
{$IFNDEF CIL}
|
|
p: Pointer;
|
|
{$ENDIF}
|
|
begin
|
|
if FSSL.SSLEnabled then
|
|
begin
|
|
Result := 0;
|
|
if TestStopFlag then
|
|
Exit;
|
|
ResetLastError;
|
|
DoMonitor(True, Buffer, Length);
|
|
{$IFDEF CIL}
|
|
Result := FSSL.SendBuffer(Buffer, Length);
|
|
if FSSL.LastError <> 0 then
|
|
FLastError := WSASYSNOTREADY;
|
|
Inc(FSendCounter, Result);
|
|
DoStatus(HR_WriteCount, IntToStr(Result));
|
|
{$ELSE}
|
|
l := Length;
|
|
x := 0;
|
|
while x < l do
|
|
begin
|
|
y := l - x;
|
|
if y > FSendMaxChunk then
|
|
y := FSendMaxChunk;
|
|
if y > 0 then
|
|
begin
|
|
LimitBandwidth(y, FMaxSendBandwidth, FNextsend);
|
|
p := IncPoint(Buffer, x);
|
|
r := FSSL.SendBuffer(p, y);
|
|
if FSSL.LastError <> 0 then
|
|
FLastError := WSASYSNOTREADY;
|
|
if Flasterror <> 0 then
|
|
Break;
|
|
Inc(x, r);
|
|
Inc(Result, r);
|
|
Inc(FSendCounter, r);
|
|
DoStatus(HR_WriteCount, IntToStr(r));
|
|
end
|
|
else
|
|
break;
|
|
end;
|
|
{$ENDIF}
|
|
ExceptCheck;
|
|
end
|
|
else
|
|
Result := inherited SendBuffer(Buffer, Length);
|
|
end;
|
|
|
|
function TTCPBlockSocket.SSLAcceptConnection: Boolean;
|
|
begin
|
|
ResetLastError;
|
|
if not FSSL.Accept then
|
|
FLastError := WSASYSNOTREADY;
|
|
ExceptCheck;
|
|
Result := FLastError = 0;
|
|
end;
|
|
|
|
function TTCPBlockSocket.GetSocketType: integer;
|
|
begin
|
|
Result := integer(SOCK_STREAM);
|
|
end;
|
|
|
|
function TTCPBlockSocket.GetSocketProtocol: integer;
|
|
begin
|
|
Result := integer(IPPROTO_TCP);
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
function TICMPBlockSocket.GetSocketType: integer;
|
|
begin
|
|
Result := integer(SOCK_RAW);
|
|
end;
|
|
|
|
function TICMPBlockSocket.GetSocketProtocol: integer;
|
|
begin
|
|
if FIP6Used then
|
|
Result := integer(IPPROTO_ICMPV6)
|
|
else
|
|
Result := integer(IPPROTO_ICMP);
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
function TRAWBlockSocket.GetSocketType: integer;
|
|
begin
|
|
Result := integer(SOCK_RAW);
|
|
end;
|
|
|
|
function TRAWBlockSocket.GetSocketProtocol: integer;
|
|
begin
|
|
Result := integer(IPPROTO_RAW);
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
function TPGMmessageBlockSocket.GetSocketType: integer;
|
|
begin
|
|
Result := integer(SOCK_RDM);
|
|
end;
|
|
|
|
function TPGMmessageBlockSocket.GetSocketProtocol: integer;
|
|
begin
|
|
Result := integer(IPPROTO_RM);
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
function TPGMstreamBlockSocket.GetSocketType: integer;
|
|
begin
|
|
Result := integer(SOCK_STREAM);
|
|
end;
|
|
|
|
function TPGMstreamBlockSocket.GetSocketProtocol: integer;
|
|
begin
|
|
Result := integer(IPPROTO_RM);
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
constructor TSynaClient.Create;
|
|
begin
|
|
inherited Create;
|
|
FIPInterface := cAnyHost;
|
|
FTargetHost := cLocalhost;
|
|
FTargetPort := cAnyPort;
|
|
FTimeout := 5000;
|
|
FUsername := '';
|
|
FPassword := '';
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
constructor TCustomSSL.Create(const Value: TTCPBlockSocket);
|
|
begin
|
|
inherited Create;
|
|
FSocket := Value;
|
|
FSSLEnabled := False;
|
|
FUsername := '';
|
|
FPassword := '';
|
|
FLastError := 0;
|
|
FLastErrorDesc := '';
|
|
FVerifyCert := False;
|
|
FSSLType := LT_all;
|
|
FKeyPassword := '';
|
|
FCiphers := '';
|
|
FCertificateFile := '';
|
|
FPrivateKeyFile := '';
|
|
FCertCAFile := '';
|
|
FCertCA := '';
|
|
FTrustCertificate := '';
|
|
FTrustCertificateFile := '';
|
|
FCertificate := '';
|
|
FPrivateKey := '';
|
|
FPFX := '';
|
|
FPFXfile := '';
|
|
FSSHChannelType := '';
|
|
FSSHChannelArg1 := '';
|
|
FSSHChannelArg2 := '';
|
|
FCertComplianceLevel := -1; //default
|
|
FSNIHost := '';
|
|
end;
|
|
|
|
procedure TCustomSSL.Assign(const Value: TCustomSSL);
|
|
begin
|
|
FUsername := Value.Username;
|
|
FPassword := Value.Password;
|
|
FVerifyCert := Value.VerifyCert;
|
|
FSSLType := Value.SSLType;
|
|
FKeyPassword := Value.KeyPassword;
|
|
FCiphers := Value.Ciphers;
|
|
FCertificateFile := Value.CertificateFile;
|
|
FPrivateKeyFile := Value.PrivateKeyFile;
|
|
FCertCAFile := Value.CertCAFile;
|
|
FCertCA := Value.CertCA;
|
|
FTrustCertificate := Value.TrustCertificate;
|
|
FTrustCertificateFile := Value.TrustCertificateFile;
|
|
FCertificate := Value.Certificate;
|
|
FPrivateKey := Value.PrivateKey;
|
|
FPFX := Value.PFX;
|
|
FPFXfile := Value.PFXfile;
|
|
FCertComplianceLevel := Value.CertComplianceLevel;
|
|
FSNIHost := Value.FSNIHost;
|
|
end;
|
|
|
|
procedure TCustomSSL.ReturnError;
|
|
begin
|
|
FLastError := -1;
|
|
FLastErrorDesc := 'SSL/TLS support is not compiled!';
|
|
end;
|
|
|
|
function TCustomSSL.LibVersion: String;
|
|
begin
|
|
Result := '';
|
|
end;
|
|
|
|
function TCustomSSL.LibName: String;
|
|
begin
|
|
Result := '';
|
|
end;
|
|
|
|
function TCustomSSL.CreateSelfSignedCert(Host: string): Boolean;
|
|
begin
|
|
Result := False;
|
|
end;
|
|
|
|
function TCustomSSL.Connect: boolean;
|
|
begin
|
|
ReturnError;
|
|
Result := False;
|
|
end;
|
|
|
|
function TCustomSSL.Accept: boolean;
|
|
begin
|
|
ReturnError;
|
|
Result := False;
|
|
end;
|
|
|
|
function TCustomSSL.Shutdown: boolean;
|
|
begin
|
|
ReturnError;
|
|
Result := False;
|
|
end;
|
|
|
|
function TCustomSSL.BiShutdown: boolean;
|
|
begin
|
|
ReturnError;
|
|
Result := False;
|
|
end;
|
|
|
|
function TCustomSSL.SendBuffer(Buffer: TMemory; Len: Integer): Integer;
|
|
begin
|
|
ReturnError;
|
|
Result := integer(SOCKET_ERROR);
|
|
end;
|
|
|
|
procedure TCustomSSL.SetCertCAFile(const Value: string);
|
|
begin
|
|
FCertCAFile := Value;
|
|
end;
|
|
|
|
function TCustomSSL.RecvBuffer(Buffer: TMemory; Len: Integer): Integer;
|
|
begin
|
|
ReturnError;
|
|
Result := integer(SOCKET_ERROR);
|
|
end;
|
|
|
|
function TCustomSSL.WaitingData: Integer;
|
|
begin
|
|
ReturnError;
|
|
Result := 0;
|
|
end;
|
|
|
|
function TCustomSSL.GetSSLVersion: string;
|
|
begin
|
|
Result := '';
|
|
end;
|
|
|
|
function TCustomSSL.GetPeerSubject: string;
|
|
begin
|
|
Result := '';
|
|
end;
|
|
|
|
function TCustomSSL.GetPeerSerialNo: integer;
|
|
begin
|
|
Result := -1;
|
|
end;
|
|
|
|
function TCustomSSL.GetPeerName: string;
|
|
begin
|
|
Result := '';
|
|
end;
|
|
|
|
function TCustomSSL.GetPeerNameHash: cardinal;
|
|
begin
|
|
Result := 0;
|
|
end;
|
|
|
|
function TCustomSSL.GetPeerIssuer: string;
|
|
begin
|
|
Result := '';
|
|
end;
|
|
|
|
function TCustomSSL.GetPeerFingerprint: string;
|
|
begin
|
|
Result := '';
|
|
end;
|
|
|
|
function TCustomSSL.GetCertInfo: string;
|
|
begin
|
|
Result := '';
|
|
end;
|
|
|
|
function TCustomSSL.GetCipherName: string;
|
|
begin
|
|
Result := '';
|
|
end;
|
|
|
|
function TCustomSSL.GetCipherBits: integer;
|
|
begin
|
|
Result := 0;
|
|
end;
|
|
|
|
function TCustomSSL.GetCipherAlgBits: integer;
|
|
begin
|
|
Result := 0;
|
|
end;
|
|
|
|
function TCustomSSL.GetVerifyCert: integer;
|
|
begin
|
|
Result := 1;
|
|
end;
|
|
|
|
function TCustomSSL.DoVerifyCert:boolean;
|
|
begin
|
|
if assigned(OnVerifyCert) then
|
|
begin
|
|
result:=OnVerifyCert(Self);
|
|
end
|
|
else
|
|
result:=true;
|
|
end;
|
|
|
|
|
|
{======================================================================}
|
|
|
|
function TSSLNone.LibVersion: String;
|
|
begin
|
|
Result := 'Without SSL support';
|
|
end;
|
|
|
|
function TSSLNone.LibName: String;
|
|
begin
|
|
Result := 'ssl_none';
|
|
end;
|
|
|
|
{======================================================================}
|
|
|
|
initialization
|
|
begin
|
|
{$IFDEF ONCEWINSOCK}
|
|
if not InitSocketInterface(DLLStackName) then
|
|
begin
|
|
e := ESynapseError.Create('Error loading Socket interface (' + DLLStackName + ')!');
|
|
e.ErrorCode := 0;
|
|
e.ErrorMessage := 'Error loading Socket interface (' + DLLStackName + ')!';
|
|
raise e;
|
|
end;
|
|
synsock.WSAStartup(WinsockLevel, WsaDataOnce);
|
|
{$ENDIF}
|
|
end;
|
|
|
|
finalization
|
|
begin
|
|
{$IFDEF ONCEWINSOCK}
|
|
synsock.WSACleanup;
|
|
DestroySocketInterface;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
end.
|