{==============================================================================| | 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 (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.