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Simba/Units/Synapse/blcksock.pas
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{==============================================================================|
| Project : Ararat Synapse | 009.008.002 |
|==============================================================================|
| Content: Library base |
|==============================================================================|
| Copyright (c)1999-2010, Lukas Gebauer |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| |
| Redistributions of source code must retain the above copyright notice, this |
| list of conditions and the following disclaimer. |
| |
| Redistributions in binary form must reproduce the above copyright notice, |
| this list of conditions and the following disclaimer in the documentation |
| and/or other materials provided with the distribution. |
| |
| Neither the name of Lukas Gebauer nor the names of its contributors may |
| be used to endorse or promote products derived from this software without |
| specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR |
| ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| DAMAGE. |
|==============================================================================|
| The Initial Developer of the Original Code is Lukas Gebauer (Czech Republic).|
| Portions created by Lukas Gebauer are Copyright (c)1999-2010. |
| All Rights Reserved. |
|==============================================================================|
| Contributor(s): |
|==============================================================================|
| History: see HISTORY.HTM from distribution package |
| (Found at URL: http://www.ararat.cz/synapse/) |
|==============================================================================}
{
Special thanks to Gregor Ibic <gregor.ibic@intelicom.si>
(Intelicom d.o.o., http://www.intelicom.si)
for good inspiration about SSL programming.
}
{$DEFINE ONCEWINSOCK}
{Note about define ONCEWINSOCK:
If you remove this compiler directive, then socket interface is loaded and
initialized on constructor of TBlockSocket class for each socket separately.
Socket interface is used only if your need it.
If you leave this directive here, then socket interface is loaded and
initialized only once at start of your program! It boost performace on high
count of created and destroyed sockets. It eliminate possible small resource
leak on Windows systems too.
}
//{$DEFINE RAISEEXCEPT}
{When you enable this define, then is Raiseexcept property is on by default
}
{:@abstract(Synapse's library core)
Core with implementation basic socket classes.
}
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
{$IFDEF VER125}
{$DEFINE BCB}
{$ENDIF}
{$IFDEF BCB}
{$ObjExportAll On}
{$ENDIF}
{$Q-}
{$H+}
{$M+}
//old Delphi does not have MSWINDOWS define.
{$IFDEF WIN32}
{$IFNDEF MSWINDOWS}
{$DEFINE MSWINDOWS}
{$ENDIF}
{$ENDIF}
{$IFDEF UNICODE}
{$WARN IMPLICIT_STRING_CAST OFF}
{$WARN IMPLICIT_STRING_CAST_LOSS OFF}
{$ENDIF}
unit blcksock;
interface
uses
SysUtils, Classes,
synafpc,
synsock, synautil, synacode, synaip
{$IFDEF CIL}
,System.Net
,System.Net.Sockets
,System.Text
{$ENDIF}
;
const
SynapseRelease = '38';
cLocalhost = '127.0.0.1';
cAnyHost = '0.0.0.0';
cBroadcast = '255.255.255.255';
c6Localhost = '::1';
c6AnyHost = '::0';
c6Broadcast = 'ffff::1';
cAnyPort = '0';
CR = #$0d;
LF = #$0a;
CRLF = CR + LF;
c64k = 65536;
type
{:@abstract(Exception clas used by Synapse)
When you enable generating of exceptions, this exception is raised by
Synapse's units.}
ESynapseError = class(Exception)
private
FErrorCode: Integer;
FErrorMessage: string;
published
{:Code of error. Value depending on used operating system}
property ErrorCode: Integer read FErrorCode Write FErrorCode;
{:Human readable description of error.}
property ErrorMessage: string read FErrorMessage Write FErrorMessage;
end;
{:Types of OnStatus events}
THookSocketReason = (
{:Resolving is begin. Resolved IP and port is in parameter in format like:
'localhost.somewhere.com:25'.}
HR_ResolvingBegin,
{:Resolving is done. Resolved IP and port is in parameter in format like:
'localhost.somewhere.com:25'. It is always same as in HR_ResolvingBegin!}
HR_ResolvingEnd,
{:Socket created by CreateSocket method. It reporting Family of created
socket too!}
HR_SocketCreate,
{:Socket closed by CloseSocket method.}
HR_SocketClose,
{:Socket binded to IP and Port. Binded IP and Port is in parameter in format
like: 'localhost.somewhere.com:25'.}
HR_Bind,
{:Socket connected to IP and Port. Connected IP and Port is in parameter in
format like: 'localhost.somewhere.com:25'.}
HR_Connect,
{:Called when CanRead method is used with @True result.}
HR_CanRead,
{:Called when CanWrite method is used with @True result.}
HR_CanWrite,
{:Socket is swithed to Listen mode. (TCP socket only)}
HR_Listen,
{:Socket Accepting client connection. (TCP socket only)}
HR_Accept,
{:report count of bytes readed from socket. Number is in parameter string.
If you need is in integer, you must use StrToInt function!}
HR_ReadCount,
{:report count of bytes writed to socket. Number is in parameter string. If
you need is in integer, you must use StrToInt function!}
HR_WriteCount,
{:If is limiting of bandwidth on, then this reason is called when sending or
receiving is stopped for satisfy bandwidth limit. Parameter is count of
waiting milliseconds.}
HR_Wait,
{:report situation where communication error occured. When raiseexcept is
@true, then exception is called after this Hook reason.}
HR_Error
);
{:Procedural type for OnStatus event. Sender is calling TBlockSocket object,
Reason is one of set Status events and value is optional data.}
THookSocketStatus = procedure(Sender: TObject; Reason: THookSocketReason;
const Value: String) of object;
{:This procedural type is used for DataFilter hooks.}
THookDataFilter = procedure(Sender: TObject; var Value: AnsiString) of object;
{:This procedural type is used for hook OnCreateSocket. By this hook you can
insert your code after initialisation of socket. (you can set special socket
options, etc.)}
THookCreateSocket = procedure(Sender: TObject) of object;
{:This procedural type is used for monitoring of communication.}
THookMonitor = procedure(Sender: TObject; Writing: Boolean;
const Buffer: TMemory; Len: Integer) of object;
{:This procedural type is used for hook OnAfterConnect. By this hook you can
insert your code after TCP socket has been sucessfully connected.}
THookAfterConnect = procedure(Sender: TObject) of object;
{:This procedural type is used for hook OnHeartbeat. By this hook you can
call your code repeately during long socket operations.
You must enable heartbeats by @Link(HeartbeatRate) property!}
THookHeartbeat = procedure(Sender: TObject) of object;
{:Specify family of socket.}
TSocketFamily = (
{:Default mode. Socket family is defined by target address for connection.
It allows instant access to IPv4 and IPv6 nodes. When you need IPv6 address
as destination, then is used IPv6 mode. othervise is used IPv4 mode.
However this mode not working properly with preliminary IPv6 supports!}
SF_Any,
{:Turn this class to pure IPv4 mode. This mode is totally compatible with
previous Synapse releases.}
SF_IP4,
{:Turn to only IPv6 mode.}
SF_IP6
);
{:specify possible values of SOCKS modes.}
TSocksType = (
ST_Socks5,
ST_Socks4
);
{:Specify requested SSL/TLS version for secure connection.}
TSSLType = (
LT_all,
LT_SSLv2,
LT_SSLv3,
LT_TLSv1,
LT_TLSv1_1,
LT_SSHv2
);
{:Specify type of socket delayed option.}
TSynaOptionType = (
SOT_Linger,
SOT_RecvBuff,
SOT_SendBuff,
SOT_NonBlock,
SOT_RecvTimeout,
SOT_SendTimeout,
SOT_Reuse,
SOT_TTL,
SOT_Broadcast,
SOT_MulticastTTL,
SOT_MulticastLoop
);
{:@abstract(this object is used for remember delayed socket option set.)}
TSynaOption = class(TObject)
public
Option: TSynaOptionType;
Enabled: Boolean;
Value: Integer;
end;
TCustomSSL = class;
TSSLClass = class of TCustomSSL;
{:@abstract(Basic IP object.)
This is parent class for other class with protocol implementations. Do not
use this class directly! Use @link(TICMPBlockSocket), @link(TRAWBlockSocket),
@link(TTCPBlockSocket) or @link(TUDPBlockSocket) instead.}
TBlockSocket = class(TObject)
private
FOnStatus: THookSocketStatus;
FOnReadFilter: THookDataFilter;
FOnCreateSocket: THookCreateSocket;
FOnMonitor: THookMonitor;
FOnHeartbeat: THookHeartbeat;
FLocalSin: TVarSin;
FRemoteSin: TVarSin;
FTag: integer;
FBuffer: AnsiString;
FRaiseExcept: Boolean;
FNonBlockMode: Boolean;
FMaxLineLength: Integer;
FMaxSendBandwidth: Integer;
FNextSend: LongWord;
FMaxRecvBandwidth: Integer;
FNextRecv: LongWord;
FConvertLineEnd: Boolean;
FLastCR: Boolean;
FLastLF: Boolean;
FBinded: Boolean;
FFamily: TSocketFamily;
FFamilySave: TSocketFamily;
FIP6used: Boolean;
FPreferIP4: Boolean;
FDelayedOptions: TList;
FInterPacketTimeout: Boolean;
{$IFNDEF CIL}
FFDSet: TFDSet;
{$ENDIF}
FRecvCounter: Integer;
FSendCounter: Integer;
FSendMaxChunk: Integer;
FStopFlag: Boolean;
FNonblockSendTimeout: Integer;
FHeartbeatRate: integer;
function GetSizeRecvBuffer: Integer;
procedure SetSizeRecvBuffer(Size: Integer);
function GetSizeSendBuffer: Integer;
procedure SetSizeSendBuffer(Size: Integer);
procedure SetNonBlockMode(Value: Boolean);
procedure SetTTL(TTL: integer);
function GetTTL:integer;
procedure SetFamily(Value: TSocketFamily); virtual;
procedure SetSocket(Value: TSocket); virtual;
function GetWsaData: TWSAData;
function FamilyToAF(f: TSocketFamily): TAddrFamily;
protected
FSocket: TSocket;
FLastError: Integer;
FLastErrorDesc: string;
FOwner: TObject;
procedure SetDelayedOption(const Value: TSynaOption);
procedure DelayedOption(const Value: TSynaOption);
procedure ProcessDelayedOptions;
procedure InternalCreateSocket(Sin: TVarSin);
procedure SetSin(var Sin: TVarSin; IP, Port: string);
function GetSinIP(Sin: TVarSin): string;
function GetSinPort(Sin: TVarSin): Integer;
procedure DoStatus(Reason: THookSocketReason; const Value: string);
procedure DoReadFilter(Buffer: TMemory; var Len: Integer);
procedure DoMonitor(Writing: Boolean; const Buffer: TMemory; Len: Integer);
procedure DoCreateSocket;
procedure DoHeartbeat;
procedure LimitBandwidth(Length: Integer; MaxB: integer; var Next: LongWord);
procedure SetBandwidth(Value: Integer);
function TestStopFlag: Boolean;
procedure InternalSendStream(const Stream: TStream; WithSize, Indy: boolean); virtual;
function InternalCanRead(Timeout: Integer): Boolean; virtual;
public
constructor Create;
{:Create object and load all necessary socket library. What library is
loaded is described by STUB parameter. If STUB is empty string, then is
loaded default libraries.}
constructor CreateAlternate(Stub: string);
destructor Destroy; override;
{:If @link(family) is not SF_Any, then create socket with type defined in
@link(Family) property. If family is SF_Any, then do nothing! (socket is
created automaticly when you know what type of socket you need to create.
(i.e. inside @link(Connect) or @link(Bind) call.) When socket is created,
then is aplyed all stored delayed socket options.}
procedure CreateSocket;
{:It create socket. Address resolving of Value tells what type of socket is
created. If Value is resolved as IPv4 IP, then is created IPv4 socket. If
value is resolved as IPv6 address, then is created IPv6 socket.}
procedure CreateSocketByName(const Value: String);
{:Destroy socket in use. This method is also automatically called from
object destructor.}
procedure CloseSocket; virtual;
{:Abort any work on Socket and destroy them.}
procedure AbortSocket; virtual;
{:Connects socket to local IP address and PORT. IP address may be numeric or
symbolic ('192.168.74.50', 'cosi.nekde.cz', 'ff08::1'). The same for PORT
- it may be number or mnemonic port ('23', 'telnet').
If port value is '0', system chooses itself and conects unused port in the
range 1024 to 4096 (this depending by operating system!). Structure
LocalSin is filled after calling this method.
Note: If you call this on non-created socket, then socket is created
automaticly.
Warning: when you call : Bind('0.0.0.0','0'); then is nothing done! In this
case is used implicit system bind instead.}
procedure Bind(IP, Port: string);
{:Connects socket to remote IP address and PORT. The same rules as with
@link(BIND) method are valid. The only exception is that PORT with 0 value
will not be connected!
Structures LocalSin and RemoteSin will be filled with valid values.
When you call this on non-created socket, then socket is created
automaticly. Type of created socket is by @link(Family) property. If is
used SF_IP4, then is created socket for IPv4. If is used SF_IP6, then is
created socket for IPv6. When you have family on SF_Any (default!), then
type of created socket is determined by address resolving of destination
address. (Not work properly on prilimitary winsock IPv6 support!)}
procedure Connect(IP, Port: string); virtual;
{: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!}
procedure Listen; virtual;
{:Waits until new incoming connection comes. After it comes a new socket is
automatically created (socket handler is returned by this function as
result).}
function Accept: TSocket; virtual;
{:Sends data of LENGTH from BUFFER address via connected socket. System
automatically splits data to packets.}
function SendBuffer(Buffer: Tmemory; Length: Integer): Integer; virtual;
{:One data BYTE is sent via connected socket.}
procedure SendByte(Data: Byte); virtual;
{:Send data string via connected socket. Any terminator is not added! If you
need send true string with CR-LF termination, you must add CR-LF characters
to sended string! Because any termination is not added automaticly, you can
use this function for sending any binary data in binary string.}
procedure SendString(Data: AnsiString); virtual;
{:Send integer as four bytes to socket.}
procedure SendInteger(Data: integer); virtual;
{:Send data as one block to socket. Each block begin with 4 bytes with
length of data in block. This 4 bytes is added automaticly by this
function.}
procedure SendBlock(const Data: AnsiString); virtual;
{:Send data from stream to socket.}
procedure SendStreamRaw(const Stream: TStream); virtual;
{:Send content of stream to socket. It using @link(SendBlock) method}
procedure SendStream(const Stream: TStream); virtual;
{:Send content of stream to socket. It using @link(SendBlock) method and
this is compatible with streams in Indy library.}
procedure SendStreamIndy(const Stream: TStream); virtual;
{:Note: This is low-level receive function. You must be sure if data is
waiting for read before call this function for avoid deadlock!
Waits until allocated buffer is filled by received data. Returns number of
data received, which equals to LENGTH value under normal operation. If it
is not equal the communication channel is possibly broken.
On stream oriented sockets if is received 0 bytes, it mean 'socket is
closed!"
On datagram socket is readed first waiting datagram.}
function RecvBuffer(Buffer: TMemory; Length: 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 is received. If no data is received within TIMEOUT
(in milliseconds) period, @link(LastError) is set to WSAETIMEDOUT. Methods
serves for reading any size of data (i.e. one megabyte...). This method is
preffered for reading from stream sockets (like TCP).}
function RecvBufferEx(Buffer: Tmemory; Len: Integer;
Timeout: Integer): Integer; virtual;
{:Similar to @link(RecvBufferEx), but readed data is stored in binary
string, not in memory buffer.}
function RecvBufferStr(Len: Integer; 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.
Waits until one data byte is received which is also returned as function
result. If no data is received within TIMEOUT (in milliseconds)period,
@link(LastError) is set to WSAETIMEDOUT and result have value 0.}
function RecvByte(Timeout: Integer): Byte; 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.
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)
protected
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;
procedure ReturnError;
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 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;
{: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 FCertCAFile;
{: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;
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 Indy then
l := SwapBytes(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) or 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);
{$ENDIF}
GetSins;
FIP6Used := FRemoteSin.AddressFamily = AF_INET6;
end;
function TBlockSocket.GetWsaData: TWSAData;
begin
Result := WsaDataOnce;
end;
function TBlockSocket.GetSocketType: integer;
begin
Result := 0;
end;
function TBlockSocket.GetSocketProtocol: integer;
begin
Result := integer(IPPROTO_IP);
end;
procedure TBlockSocket.DoStatus(Reason: THookSocketReason; const Value: string);
begin
if assigned(OnStatus) then
OnStatus(Self, Reason, Value);
end;
procedure TBlockSocket.DoReadFilter(Buffer: TMemory; var Len: Integer);
var
s: AnsiString;
begin
if assigned(OnReadFilter) then
if Len > 0 then
begin
{$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 := '';
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;
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;
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.GetPeerName: string;
begin
Result := '';
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 TSSLNone.LibVersion: String;
begin
Result := 'Without SSL support';
end;
function TSSLNone.LibName: String;
begin
Result := 'ssl_none';
end;
{======================================================================}
{$IFDEF ONCEWINSOCK}
initialization
begin
if not InitSocketInterface(DLLStackName) then
begin
e := ESynapseError.Create('Error loading Socket interface (' + DLLStackName + ')!');
e.ErrorCode := 0;
e.ErrorMessage := 'Error loading Socket interface (' + DLLStackName + ')!';
raise e;
end;
synsock.WSAStartup(WinsockLevel, WsaDataOnce);
end;
{$ENDIF}
finalization
begin
{$IFDEF ONCEWINSOCK}
synsock.WSACleanup;
DestroySocketInterface;
{$ENDIF}
end;
end.
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