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SynFPCSock.pas
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SynFPCSock.pas
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/// low level access to network Sockets for FPC cross-platform
// - this unit is a part of the freeware Synopse framework,
// licensed under a MPL/GPL/LGPL tri-license; version 1.18
unit SynFPCSock;
{
This file is part of Synopse framework.
Synopse framework. Copyright (C) 2016 Arnaud Bouchez
Synopse Informatique - http://synopse.info
*** BEGIN LICENSE BLOCK *****
Version: MPL 1.1/GPL 2.0/LGPL 2.1
The contents of this file are subject to the Mozilla Public License Version
1.1 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
for the specific language governing rights and limitations under the License.
The Original Code is Synapse library.
The Initial Developer of the Original Code is Lukas Gebauer (Czech Republic).
Portions created by Lukas Gebauer are Copyright (C) 2003.
All Rights Reserved.
Portions created by Arnaud Bouchez are Copyright (C) 2016 Arnaud Bouchez.
All Rights Reserved.
Contributor(s):
- Alfred Glaenzer
Alternatively, the contents of this file may be used under the terms of
either the GNU General Public License Version 2 or later (the "GPL"), or
the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
in which case the provisions of the GPL or the LGPL are applicable instead
of those above. If you wish to allow use of your version of this file only
under the terms of either the GPL or the LGPL, and not to allow others to
use your version of this file under the terms of the MPL, indicate your
decision by deleting the provisions above and replace them with the notice
and other provisions required by the GPL or the LGPL. If you do not delete
the provisions above, a recipient may use your version of this file under
the terms of any one of the MPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****
Low level access to network Sockets
*************************************
Version 1.18
- initial release
}
{$ifdef FPC}
{$MODE DELPHI}
{$H+}
// BSD definition of scoketaddr
{$ifdef FREEBSD}
{$DEFINE SOCK_HAS_SINLEN}
{$endif}
{$ifdef SUNOS}
{$DEFINE SOCK_HAS_SINLEN}
{$endif}
{$ifdef darwin}
{$DEFINE SOCK_HAS_SINLEN}
{$endif}
{$else}
{$ifdef LINUX}
{$define KYLIX3}
{$else}
this unit is for FPC or (Cross-)Kylix only!
{$endif}
{$endif FPC}
interface
uses
{$ifdef FPC}
BaseUnix,
Unix,
termio,
netdb,
Sockets,
SynFPCLinux,
{$else}
{$ifdef KYLIX3}
LibC,
Types,
KernelIoctl,
SynKylix,
{$endif}
{$endif}
SyncObjs, SysUtils, Classes;
const
InitSocketInterface = true;
procedure DestroySocketInterface;
{$MINENUMSIZE 4}
const
DLLStackName = '';
WinsockLevel = $0202;
cLocalHost = '127.0.0.1';
cAnyHost = '0.0.0.0';
c6AnyHost = '::0';
c6Localhost = '::1';
cLocalHostStr = 'localhost';
{$ifdef FPC}
type
TSocket = longint;
TFDSet = Baseunix.TFDSet;
PFDSet = ^TFDSet;
Ptimeval = Baseunix.ptimeval;
Ttimeval = Baseunix.ttimeval;
PInAddr = ^TInAddr;
TInAddr = sockets.in_addr;
PSockAddrIn = ^TSockAddrIn;
TSockAddrIn = sockets.TInetSockAddr;
PInAddr6 = ^TInAddr6;
TInAddr6 = sockets.Tin6_addr;
PSockAddrIn6 = ^TSockAddrIn6;
TSockAddrIn6 = sockets.TInetSockAddr6;
const
FIONREAD = termio.FIONREAD;
FIONBIO = termio.FIONBIO;
FIOASYNC = termio.FIOASYNC;
IP_TOS = sockets.IP_TOS; { int; IP type of service and precedence. }
IP_TTL = sockets.IP_TTL; { int; IP time to live. }
IP_HDRINCL = sockets.IP_HDRINCL; { int; Header is included with data. }
IP_OPTIONS = sockets.IP_OPTIONS; { ip_opts; IP per-packet options. }
IP_RECVOPTS = sockets.IP_RECVOPTS; { bool }
IP_RETOPTS = sockets.IP_RETOPTS; { bool }
IP_MULTICAST_IF = sockets.IP_MULTICAST_IF; { in_addr; set/get IP multicast i/f }
IP_MULTICAST_TTL = sockets.IP_MULTICAST_TTL; { u_char; set/get IP multicast ttl }
IP_MULTICAST_LOOP = sockets.IP_MULTICAST_LOOP; { i_char; set/get IP multicast loopback }
IP_ADD_MEMBERSHIP = sockets.IP_ADD_MEMBERSHIP; { ip_mreq; add an IP group membership }
IP_DROP_MEMBERSHIP = sockets.IP_DROP_MEMBERSHIP; { ip_mreq; drop an IP group membership }
SOL_SOCKET = sockets.SOL_SOCKET;
SO_DEBUG = sockets.SO_DEBUG;
SO_REUSEADDR = sockets.SO_REUSEADDR;
SO_TYPE = sockets.SO_TYPE;
SO_ERROR = sockets.SO_ERROR;
SO_DONTROUTE = sockets.SO_DONTROUTE;
SO_BROADCAST = sockets.SO_BROADCAST;
SO_SNDBUF = sockets.SO_SNDBUF;
SO_RCVBUF = sockets.SO_RCVBUF;
SO_KEEPALIVE = sockets.SO_KEEPALIVE;
SO_OOBINLINE = sockets.SO_OOBINLINE;
SO_LINGER = sockets.SO_LINGER;
SO_RCVLOWAT = sockets.SO_RCVLOWAT;
SO_SNDLOWAT = sockets.SO_SNDLOWAT;
SO_RCVTIMEO = sockets.SO_RCVTIMEO;
SO_SNDTIMEO = sockets.SO_SNDTIMEO;
{$IFDEF DARWIN}
SO_NOSIGPIPE = $1022;
{$ENDIF}
SOMAXCONN = 1024;
IPV6_UNICAST_HOPS = sockets.IPV6_UNICAST_HOPS;
IPV6_MULTICAST_IF = sockets.IPV6_MULTICAST_IF;
IPV6_MULTICAST_HOPS = sockets.IPV6_MULTICAST_HOPS;
IPV6_MULTICAST_LOOP = sockets.IPV6_MULTICAST_LOOP;
IPV6_JOIN_GROUP = sockets.IPV6_JOIN_GROUP;
IPV6_LEAVE_GROUP = sockets.IPV6_LEAVE_GROUP;
MSG_OOB = sockets.MSG_OOB; // Process out-of-band data.
MSG_PEEK = sockets.MSG_PEEK; // Peek at incoming messages.
{$ifdef DARWIN}
MSG_NOSIGNAL = $20000; // Do not generate SIGPIPE.
// Works under MAC OS X, but is undocumented, so FPC doesn't include it
{$else}
{$ifdef SUNOS}
MSG_NOSIGNAL = $20000; // Do not generate SIGPIPE.
{$else}
MSG_NOSIGNAL = sockets.MSG_NOSIGNAL; // Do not generate SIGPIPE.
{$endif}
{$endif}
{ TCP options. }
TCP_NODELAY = $0001;
{ Address families. }
AF_UNSPEC = 0; { unspecified }
AF_INET = 2; { internetwork: UDP, TCP, etc. }
AF_MAX = 24;
{ Protocol families, same as address families for now. }
PF_UNSPEC = AF_UNSPEC;
PF_INET = AF_INET;
PF_MAX = AF_MAX;
const
WSAEINTR = ESysEINTR;
WSAEBADF = ESysEBADF;
WSAEACCES = ESysEACCES;
WSAEFAULT = ESysEFAULT;
WSAEINVAL = ESysEINVAL;
WSAEMFILE = ESysEMFILE;
WSAEWOULDBLOCK = ESysEWOULDBLOCK;
WSAEINPROGRESS = ESysEINPROGRESS;
WSAEALREADY = ESysEALREADY;
WSATRY_AGAIN = ESysEAGAIN;
WSAENOTSOCK = ESysENOTSOCK;
WSAEDESTADDRREQ = ESysEDESTADDRREQ;
WSAEMSGSIZE = ESysEMSGSIZE;
WSAEPROTOTYPE = ESysEPROTOTYPE;
WSAENOPROTOOPT = ESysENOPROTOOPT;
WSAEPROTONOSUPPORT = ESysEPROTONOSUPPORT;
WSAESOCKTNOSUPPORT = ESysESOCKTNOSUPPORT;
WSAEOPNOTSUPP = ESysEOPNOTSUPP;
WSAEPFNOSUPPORT = ESysEPFNOSUPPORT;
WSAEAFNOSUPPORT = ESysEAFNOSUPPORT;
WSAEADDRINUSE = ESysEADDRINUSE;
WSAEADDRNOTAVAIL = ESysEADDRNOTAVAIL;
WSAENETDOWN = ESysENETDOWN;
WSAENETUNREACH = ESysENETUNREACH;
WSAENETRESET = ESysENETRESET;
WSAECONNABORTED = ESysECONNABORTED;
WSAECONNRESET = ESysECONNRESET;
WSAENOBUFS = ESysENOBUFS;
WSAEISCONN = ESysEISCONN;
WSAENOTCONN = ESysENOTCONN;
WSAESHUTDOWN = ESysESHUTDOWN;
WSAETOOMANYREFS = ESysETOOMANYREFS;
WSAETIMEDOUT = ESysETIMEDOUT;
WSAECONNREFUSED = ESysECONNREFUSED;
WSAELOOP = ESysELOOP;
WSAENAMETOOLONG = ESysENAMETOOLONG;
WSAEHOSTDOWN = ESysEHOSTDOWN;
WSAEHOSTUNREACH = ESysEHOSTUNREACH;
WSAENOTEMPTY = ESysENOTEMPTY;
WSAEPROCLIM = -1;
WSAEUSERS = ESysEUSERS;
WSAEDQUOT = ESysEDQUOT;
WSAESTALE = ESysESTALE;
WSAEREMOTE = ESysEREMOTE;
WSASYSNOTREADY = -2;
WSAVERNOTSUPPORTED = -3;
WSANOTINITIALISED = -4;
WSAEDISCON = -5;
WSAHOST_NOT_FOUND = 1;
WSANO_RECOVERY = 3;
WSANO_DATA = -6;
{$else FPC} // Kylix3 definitions:
type
TInAddr6 = packed record
case byte of
0: (u6_addr8 : array[0..15] of byte);
1: (u6_addr16 : array[0..7] of Word);
2: (u6_addr32 : array[0..3] of Cardinal);
3: (s6_addr8 : array[0..15] of shortint);
4: (s6_addr : array[0..15] of shortint);
5: (s6_addr16 : array[0..7] of smallint);
6: (s6_addr32 : array[0..3] of LongInt);
end;
PInAddr6 = ^TInAddr6;
TSockAddrIn6 = packed Record
sin6_family : sa_family_t;
sin6_port : word;
sin6_flowinfo : cardinal;
sin6_addr : TInAddr6;
sin6_scope_id : cardinal;
end;
const
WSAEINTR = EINTR;
WSATRY_AGAIN = EAGAIN;
WSAENETDOWN = ENETDOWN;
WSAECONNABORTED = ECONNABORTED;
WSAECONNRESET = ECONNRESET;
WSAEWOULDBLOCK = EWOULDBLOCK;
WSAEPROTONOSUPPORT = EPROTONOSUPPORT;
WSAHOST_NOT_FOUND = HOST_NOT_FOUND;
WSAETIMEDOUT = ETIMEDOUT;
{$endif FPC}
const
IPPROTO_IP = 0; { Dummy }
IPPROTO_ICMP = 1; { Internet Control Message Protocol }
IPPROTO_IGMP = 2; { Internet Group Management Protocol}
IPPROTO_TCP = 6; { TCP }
IPPROTO_UDP = 17; { User Datagram Protocol }
IPPROTO_IPV6 = 41;
IPPROTO_ICMPV6 = 58;
IPPROTO_RM = 113;
IPPROTO_RAW = 255;
IPPROTO_MAX = 256;
AF_INET6 = 10; { Internetwork Version 6 }
PF_INET6 = AF_INET6;
SOCK_STREAM = 1; { stream socket }
SOCK_DGRAM = 2; { datagram socket }
SOCK_RAW = 3; { raw-protocol interface }
SOCK_RDM = 4; { reliably-delivered message }
SOCK_SEQPACKET = 5; { sequenced packet stream }
type
TIP_mreq = record
imr_multiaddr: TInAddr; // IP multicast address of group
imr_interface: TInAddr; // local IP address of interface
end;
TIPv6_mreq = record
ipv6mr_multiaddr: TInAddr6; // IPv6 multicast address.
ipv6mr_interface: integer; // Interface index.
end;
const
INADDR_ANY = $00000000;
INADDR_LOOPBACK = $7F000001;
INADDR_BROADCAST = $FFFFFFFF;
INADDR_NONE = $FFFFFFFF;
ADDR_ANY = INADDR_ANY;
INVALID_SOCKET = TSocket(NOT(0));
SOCKET_ERROR = -1;
type
{ Structure used for manipulating linger option. }
PLinger = ^TLinger;
TLinger = packed record
l_onoff: integer;
l_linger: integer;
end;
const
WSADESCRIPTION_LEN = 256;
WSASYS_STATUS_LEN = 128;
type
PWSAData = ^TWSAData;
TWSAData = packed record
wVersion: Word;
wHighVersion: Word;
szDescription: array[0..WSADESCRIPTION_LEN] of Char;
szSystemStatus: array[0..WSASYS_STATUS_LEN] of Char;
iMaxSockets: Word;
iMaxUdpDg: Word;
lpVendorInfo: PChar;
end;
function IN6_IS_ADDR_UNSPECIFIED(const a: PInAddr6): boolean;
function IN6_IS_ADDR_LOOPBACK(const a: PInAddr6): boolean;
function IN6_IS_ADDR_LINKLOCAL(const a: PInAddr6): boolean;
function IN6_IS_ADDR_SITELOCAL(const a: PInAddr6): boolean;
function IN6_IS_ADDR_MULTICAST(const a: PInAddr6): boolean;
function IN6_ADDR_EQUAL(const a: PInAddr6; const b: PInAddr6):boolean;
procedure SET_IN6_IF_ADDR_ANY (const a: PInAddr6);
procedure SET_LOOPBACK_ADDR6 (const a: PInAddr6);
var
in6addr_any, in6addr_loopback : TInAddr6;
{$ifdef FPC}
procedure FD_CLR(Socket: TSocket; var FDSet: TFDSet);
function FD_ISSET(Socket: TSocket; var FDSet: TFDSet): Boolean;
procedure FD_SET(Socket: TSocket; var FDSet: TFDSet);
procedure FD_ZERO(var FDSet: TFDSet);
function ResolveIPToName(const IP: string; Family,SockProtocol,SockType: integer): string;
function ResolvePort(const Port: string; Family,SockProtocol,SockType: integer): Word;
{$endif FPC}
const
// we assume that the OS has IP6 compatibility
SockEnhancedApi = true;
SockWship6Api = true;
type
TVarSin = packed record
{$ifdef SOCK_HAS_SINLEN}
sin_len: cuchar;
{$endif}
case integer of
0: (AddressFamily: sa_family_t);
1: (
case sin_family: sa_family_t of
AF_INET: (sin_port: word;
sin_addr: TInAddr;
sin_zero: array[0..7] of Char);
AF_INET6:(sin6_port: word;
sin6_flowinfo: longword;
sin6_addr: TInAddr6;
sin6_scope_id: longword);
);
end;
function SizeOfVarSin(sin: TVarSin): integer;
function WSAStartup(wVersionRequired: Word; var WSData: TWSAData): Integer;
function WSACleanup: Integer;
function WSAGetLastError: Integer;
function GetHostName: string;
function Shutdown(s: TSocket; how: Integer): Integer;
function SetSockOpt(s: TSocket; level,optname: Integer; optval: pointer;
optlen: Integer): Integer;
function GetSockOpt(s: TSocket; level,optname: Integer; optval: pointer;
var optlen: Integer): Integer;
function Send(s: TSocket; Buf: pointer; len,flags,timeout: Integer): Integer;
function Recv(s: TSocket; Buf: pointer; len,flags,timeout: Integer): Integer;
function SendTo(s: TSocket; Buf: pointer; len,flags: Integer; addrto: TVarSin): Integer;
function RecvFrom(s: TSocket; Buf: pointer; len,flags: Integer; var from: TVarSin): Integer;
function ntohs(netshort: word): word;
function ntohl(netlong: longword): longword;
function Listen(s: TSocket; backlog: Integer): Integer;
function IoctlSocket(s: TSocket; cmd: DWORD; var arg: integer): Integer;
function htons(hostshort: word): word;
function htonl(hostlong: longword): longword;
function GetSockName(s: TSocket; var name: TVarSin): Integer;
function GetPeerName(s: TSocket; var name: TVarSin): Integer;
function Connect(s: TSocket; const name: TVarSin): Integer;
function CloseSocket(s: TSocket): Integer;
function Bind(s: TSocket; const addr: TVarSin): Integer;
function Accept(s: TSocket; var addr: TVarSin): TSocket;
function Socket(af,Struc,Protocol: Integer): TSocket;
function Select(nfds: Integer; readfds,writefds,exceptfds: PFDSet;
timeout: PTimeVal): Longint;
function IsNewApi(Family: integer): Boolean;
function SetVarSin(var Sin: TVarSin; const IP,Port: string;
Family,SockProtocol,SockType: integer; PreferIP4: Boolean): integer;
function GetSinIP(const Sin: TVarSin): string;
function GetSinPort(const Sin: TVarSin): Integer;
procedure ResolveNameToIP(const Name: string; Family,SockProtocol,SockType: integer;
IPList: TStrings);
implementation
function IN6_IS_ADDR_UNSPECIFIED(const a: PInAddr6): boolean;
begin
result := ((a^.u6_addr32[0]=0) and (a^.u6_addr32[1]=0) and
(a^.u6_addr32[2]=0) and (a^.u6_addr32[3]=0));
end;
function IN6_IS_ADDR_LOOPBACK(const a: PInAddr6): boolean;
begin
result := ((a^.u6_addr32[0]=0) and (a^.u6_addr32[1]=0) and
(a^.u6_addr32[2]=0) and
(a^.u6_addr8[12]=0) and (a^.u6_addr8[13]=0) and
(a^.u6_addr8[14]=0) and (a^.u6_addr8[15]=1));
end;
function IN6_IS_ADDR_LINKLOCAL(const a: PInAddr6): boolean;
begin
result := ((a^.u6_addr8[0]=$FE) and (a^.u6_addr8[1]=$80));
end;
function IN6_IS_ADDR_SITELOCAL(const a: PInAddr6): boolean;
begin
result := ((a^.u6_addr8[0]=$FE) and (a^.u6_addr8[1]=$C0));
end;
function IN6_IS_ADDR_MULTICAST(const a: PInAddr6): boolean;
begin
result := (a^.u6_addr8[0]=$FF);
end;
function IN6_ADDR_EQUAL(const a: PInAddr6; const b: PInAddr6): boolean;
begin
result := CompareMem(a,b,sizeof(TInAddr6));
end;
procedure SET_IN6_IF_ADDR_ANY (const a: PInAddr6);
begin
FillChar(a^,sizeof(TInAddr6),0);
end;
procedure SET_LOOPBACK_ADDR6 (const a: PInAddr6);
begin
FillChar(a^,sizeof(TInAddr6),0);
a^.u6_addr8[15] := 1;
end;
function WSAStartup(wVersionRequired: Word; var WSData: TWSAData): Integer;
begin
with WSData do begin
wVersion := wVersionRequired;
wHighVersion := $202;
{$ifdef FPC}
szDescription := 'Synopse CrossPlatform Socket Layer';
szSystemStatus := 'Running on Unix/Linux by FreePascal';
{$endif}
{$ifdef KYLIX3}
{$endif}
szDescription := 'Synopse CrossPlatform Socket Layer';
szSystemStatus := 'Running on Unix/Linux by Kylix';
iMaxSockets := 32768;
iMaxUdpDg := 8192;
end;
result := 0;
end;
function WSACleanup: Integer;
begin
result := 0;
end;
function WSAGetLastError: Integer;
begin
result := {$ifdef KYLIX3}errno{$else}fpGetErrno{$endif};
end;
{$ifdef FPC}
function FD_ISSET(Socket: TSocket; var fdset: TFDSet): Boolean;
begin
result := fpFD_ISSET(socket,fdset) <> 0;
end;
procedure FD_SET(Socket: TSocket; var fdset: TFDSet);
begin
fpFD_SET(Socket,fdset);
end;
procedure FD_CLR(Socket: TSocket; var fdset: TFDSet);
begin
fpFD_CLR(Socket,fdset);
end;
procedure FD_ZERO(var fdset: TFDSet);
begin
fpFD_ZERO(fdset);
end;
{$endif FPC}
function SizeOfVarSin(sin: TVarSin): integer;
begin
case sin.sin_family of
AF_INET: result := SizeOf(TSockAddrIn);
AF_INET6: result := SizeOf(TSockAddrIn6);
else result := 0;
end;
end;
{=============================================================================}
function Bind(s: TSocket; const addr: TVarSin): Integer;
begin
{$ifdef KYLIX3}
if LibC.Bind(s,PSockAddr(@addr)^,SizeOfVarSin(addr))=0 then
{$else}
if fpBind(s,@addr,SizeOfVarSin(addr))=0 then
{$endif}
result := 0 else
result := SOCKET_ERROR;
end;
function Connect(s: TSocket; const name: TVarSin): Integer;
begin
{$ifdef KYLIX3}
if LibC.Connect(s,PSockAddr(@name)^,SizeOfVarSin(name))=0 then
{$else}
if fpConnect(s,@name,SizeOfVarSin(name))=0 then
{$endif}
result := 0 else
result := SOCKET_ERROR;
end;
function GetSockName(s: TSocket; var name: TVarSin): Integer;
var len: integer;
begin
len := SizeOf(name);
FillChar(name,len,0);
{$ifdef KYLIX3}
result := LibC.getsockname(s,PSockAddr(@name)^,PSocketLength(@len)^);
{$else}
result := fpGetSockName(s,@name,@len);
{$endif}
end;
function GetPeerName(s: TSocket; var name: TVarSin): Integer;
var len: integer;
begin
len := SizeOf(name);
FillChar(name,len,0);
{$ifdef KYLIX3}
result := LibC.getpeername(s,PSockAddr(@name)^,PSocketLength(@len)^);
{$else}
result := fpGetPeerName(s,@name,@len);
{$endif}
end;
function GetHostName: string;
{$ifdef KYLIX3}
var tmp: array[byte] of char;
begin
LibC.gethostname(tmp,sizeof(tmp)-1);
result := tmp;
end;
{$else}
begin
result := unix.GetHostName;
end;
{$endif}
function Send(s: TSocket; Buf: pointer; len,flags,timeout: Integer): Integer;
var maxTicks: Int64;
begin
maxTicks := GetTickCount64+timeout;
repeat
{$ifdef KYLIX3}
result := LibC.Send(s,Buf^,len,flags);
{$else}
result := fpSend(s,pointer(Buf),len,flags);
{$endif}
if result>=0 then
exit; // success
if timeout<=0 then
break;
if (errno<>WSATRY_AGAIN) and (errno<>WSAEINTR) then
break;
sleep(1);
until GetTickCount64>maxTicks;
writeln('errno Send()=',errno);
result := SOCKET_ERROR;
end;
function Recv(s: TSocket; Buf: pointer; len,flags,timeout: Integer): Integer;
var maxTicks: Int64;
begin
maxTicks := GetTickCount64+timeout;
repeat
{$ifdef KYLIX3}
result := LibC.Recv(s,Buf^,len,flags);
{$else}
result := fpRecv(s,pointer(Buf),len,flags);
{$endif}
if result>=0 then
exit; // success
if timeout<=0 then
break;
if (errno<>WSATRY_AGAIN) and (errno<>WSAEINTR) then
break;
sleep(1);
until GetTickCount64>maxTicks;
writeln('errno Recv()=',errno);
result := SOCKET_ERROR;
end;
function SendTo(s: TSocket; Buf: pointer; len,flags: Integer; addrto: TVarSin): Integer;
begin
{$ifdef KYLIX3}
result := LibC.sendto(s,Buf^,len,flags,PSockAddr(@addrto)^,SizeOfVarSin(addrto));
{$else}
result := fpSendTo(s,pointer(Buf),len,flags,@addrto,SizeOfVarSin(addrto));
{$endif}
end;
function RecvFrom(s: TSocket; Buf: pointer; len,flags: Integer; var from: TVarSin): Integer;
var x: integer;
begin
x := SizeOf(from);
{$ifdef KYLIX3}
result := LibC.recvfrom(s,Buf^,len,flags,PSockAddr(@from),PSocketLength(@x));
{$else}
result := fpRecvFrom(s,pointer(Buf),len,flags,@from,@x);
{$endif}
end;
function Accept(s: TSocket; var addr: TVarSin): TSocket;
var x: integer;
begin
x := SizeOf(addr);
{$ifdef KYLIX3}
result := LibC.accept(s,PSockAddr(@addr),PSocketLength(@x));
{$else}
result := fpAccept(s,@addr,@x);
{$endif}
end;
function Shutdown(s: TSocket; how: Integer): Integer;
begin
{$ifdef KYLIX3}
result := LibC.shutdown(s,how);
{$else}
result := fpShutdown(s,how);
{$endif}
end;
function SetSockOpt(s: TSocket; level,optname: Integer; optval: pointer;
optlen: Integer): Integer;
begin
result := {$ifdef KYLIX3}LibC.setsockopt{$else}fpsetsockopt{$endif}(
s,level,optname,optval ,optlen);
end;
function GetSockOpt(s: TSocket; level,optname: Integer; optval: pointer;
var optlen: Integer): Integer;
begin
{$ifdef KYLIX3}
result := LibC.getsockopt(s,level,optname,pointer(optval),socklen_t(optlen));
{$else}
result := fpgetsockopt(s,level,optname,pointer(optval),@optlen);
{$endif}
end;
function ntohs(netshort: word): word;
begin
result := {$ifdef KYLIX3}LibC{$else}sockets{$endif}.ntohs(NetShort);
end;
function ntohl(netlong: longword): longword;
begin
result := {$ifdef KYLIX3}LibC{$else}sockets{$endif}.ntohl(NetLong);
end;
function Listen(s: TSocket; backlog: Integer): Integer;
begin
if {$ifdef KYLIX3}LibC.listen{$else}fpListen{$endif}(s,backlog)=0 then
result := 0 else
result := SOCKET_ERROR;
end;
function IoctlSocket(s: TSocket; cmd: DWORD; var arg: integer): Integer;
begin
{$ifdef KYLIX3}
result := ioctl(s,cmd,@arg);
{$else}
result := fpIoctl(s,cmd,@arg);
{$endif}
end;
function htons(hostshort: word): word;
begin
result := {$ifdef KYLIX3}LibC{$else}sockets{$endif}.htons(Hostshort);
end;
function htonl(hostlong: longword): longword;
begin
result := {$ifdef KYLIX3}LibC{$else}sockets{$endif}.htonl(HostLong);
end;
function CloseSocket(s: TSocket): Integer;
begin
{$ifdef KYLIX3}
result := Libc.__close(s);
{$else}
result := sockets.CloseSocket(s);
{$endif}
end;
function Socket(af,Struc,Protocol: Integer): TSocket;
{$IFDEF DARWIN}
var on_off: integer;
{$ENDIF}
begin
result := {$ifdef KYLIX3}LibC.socket{$else}fpSocket{$endif}(af,struc,protocol);
// ##### Patch for Mac OS to avoid "Project XXX raised exception class 'External: SIGPIPE'" error.
{$IFDEF DARWIN}
if result <> INVALID_SOCKET then begin
on_off := 1;
fpSetSockOpt(result,integer(SOL_SOCKET),integer(SO_NOSIGPIPE),@on_off,SizeOf(integer));
end;
{$ENDIF}
end;
function Select(nfds: Integer; readfds,writefds,exceptfds: PFDSet;
timeout: PTimeVal): Longint;
begin
result := {$ifdef KYLIX3}LibC.select{$else}fpSelect{$endif}(
nfds,readfds,writefds,exceptfds,timeout);
end;
function IsNewApi(Family: integer): Boolean;
begin
result := SockEnhancedApi;
if not result then
result := (Family=AF_INET6) and SockWship6Api;
end;
function GetSinPort(const Sin: TVarSin): Integer;
begin
if (Sin.sin_family=AF_INET6) then
result := ntohs(Sin.sin6_port) else
result := ntohs(Sin.sin_port);
end;
{$ifdef KYLIX3} // those functions only use the new API
function SetVarSin(var Sin: TVarSin; const IP,Port: string;
Family,SockProtocol,SockType: integer; PreferIP4: Boolean): integer;
function GetAddr(const IP, port: string; var Hints: addrinfo; var Sin: TVarSin): integer;
var Addr: PAddressInfo;
begin
Addr := nil;
try
FillChar(Sin, Sizeof(Sin), 0);
if Hints.ai_socktype=SOCK_RAW then begin
Hints.ai_socktype := 0;
Hints.ai_protocol := 0;
result := LibC.getaddrinfo(pointer(IP), nil, @Hints, Addr);
end else
if (IP=cAnyHost) or (IP=c6AnyHost) then begin
Hints.ai_flags := AI_PASSIVE;
result := LibC.getaddrinfo(nil, pointer(Port), @Hints, Addr);
end else
if (IP = cLocalhost) or (IP = c6Localhost) then
result := LibC.getaddrinfo(nil, pointer(Port), @Hints, Addr) else
result := LibC.getaddrinfo(pointer(IP), pointer(Port), @Hints, Addr);
if (Result=0) and (Addr<>nil) then
Move(Addr^.ai_addr^, Sin, Addr^.ai_addrlen);
finally
if Assigned(Addr) then
LibC.freeaddrinfo(Addr);
end;
end;
var Hints1, Hints2: addrinfo;
Sin1, Sin2: TVarSin;
TwoPass: boolean;
begin
FillChar(Hints1, Sizeof(Hints1), 0);
FillChar(Hints2, Sizeof(Hints2), 0);
TwoPass := False;
if Family=AF_UNSPEC then begin
if PreferIP4 then begin
Hints1.ai_family := AF_INET;
Hints2.ai_family := AF_INET6;
TwoPass := True;
end else begin
Hints2.ai_family := AF_INET;
Hints1.ai_family := AF_INET6;
TwoPass := True;
end;
end else
Hints1.ai_family := Family;
Hints1.ai_socktype := SockType;
Hints1.ai_protocol := SockProtocol;
Hints2.ai_socktype := SockType;
Hints2.ai_protocol := SockProtocol;
result := GetAddr(IP, Port, Hints1, Sin1);
if result=0 then
sin := sin1 else
if TwoPass then begin
result := GetAddr(IP, Port, Hints2, Sin2);
if result=0 then
sin := sin2;
end;
end;
function GetSinIP(const Sin: TVarSin): string;
var host: array[0..NI_MAXHOST] of char;
serv: array[0..NI_MAXSERV] of char;
r: integer;
begin
r := LibC.getnameinfo(PSockAddr(@sin)^,SizeOfVarSin(sin), host,NI_MAXHOST,
serv,NI_MAXSERV, NI_NUMERICHOST+NI_NUMERICSERV);
if r=0 then
result := host else
result := '';
end;
procedure ResolveNameToIP(const Name: string; Family, SockProtocol, SockType: integer;
IPList: TStrings);
var
Hints: TAddressInfo;
Addr: PAddressInfo;
AddrNext: PAddressInfo;
r: integer;
host, serv: string;
hostlen, servlen: integer;
begin
IPList.Clear;
Addr := nil;
try // we force to find TCP/IP
FillChar(Hints, Sizeof(Hints), 0);
Hints.ai_family := Family;
Hints.ai_protocol := SockProtocol;
Hints.ai_socktype := SockType;
r := LibC.getaddrinfo(pointer(Name), nil, @Hints, Addr);
if r=0 then begin
AddrNext := Addr;
while not(AddrNext=nil) do begin
if not(((Family=AF_INET6) and (AddrNext^.ai_family=AF_INET))
or ((Family=AF_INET) and (AddrNext^.ai_family=AF_INET6))) then begin
hostlen := NI_MAXHOST;
servlen := NI_MAXSERV;
setlength(host,hostlen);
setlength(serv,servlen);
r := LibC.getnameinfo(AddrNext^.ai_addr^, AddrNext^.ai_addrlen,
PChar(host), hostlen, PChar(serv), servlen,
NI_NUMERICHOST + NI_NUMERICSERV);
if r=0 then begin
host := PChar(host);
IPList.Add(host);
end;
end;
AddrNext := AddrNext^.ai_next;
end;
end;
finally
if Assigned(Addr) then
LibC.freeaddrinfo(Addr);
end;
if IPList.Count=0 then
IPList.Add(cAnyHost);
end;
{$else} // FPC version
function SetVarSin(var Sin: TVarSin; const IP,Port: string;
Family,SockProtocol,SockType: integer; PreferIP4: Boolean): integer;
var TwoPass: boolean;
f1,f2: integer;
function GetAddr(f:integer): integer;
var a4: array[1..1] of TInAddr;
a6: array[1..1] of TInAddr6;
he: THostEntry;
begin
result := WSAEPROTONOSUPPORT;
case f of
AF_INET: begin
if IP=cAnyHost then begin
Sin.sin_family := AF_INET;
result := 0;
end else begin
if lowercase(IP)=cLocalHostStr then
a4[1].s_addr := htonl(INADDR_LOOPBACK) else begin
a4[1].s_addr := 0;
result := WSAHOST_NOT_FOUND;
a4[1] := StrTonetAddr(IP);
if a4[1].s_addr=INADDR_ANY then
if GetHostByName(ip,he) then
a4[1] := HostToNet(he.Addr) else
Resolvename(ip,a4);
end;
if a4[1].s_addr <> INADDR_ANY then begin
Sin.sin_family := AF_INET;
sin.sin_addr := a4[1];
result := 0;
end;
end;
end;
AF_INET6: begin
if IP=c6AnyHost then begin
Sin.sin_family := AF_INET6;
result := 0;
end else begin
if lowercase(IP)=cLocalHostStr then
SET_LOOPBACK_ADDR6(@a6[1]) else begin
result := WSAHOST_NOT_FOUND;
SET_IN6_IF_ADDR_ANY(@a6[1]);
a6[1] := StrTonetAddr6(IP);
if IN6_IS_ADDR_UNSPECIFIED(@a6[1]) then
Resolvename6(ip,a6);
end;
if not IN6_IS_ADDR_UNSPECIFIED(@a6[1]) then begin
Sin.sin_family := AF_INET6;
sin.sin6_addr := a6[1];
result := 0;
end;
end;
end;
end;
end;
begin
result := 0;
FillChar(Sin,Sizeof(Sin),0);
Sin.sin_port := Resolveport(port,family,SockProtocol,SockType);
TwoPass := false;
if Family=AF_UNSPEC then begin
if PreferIP4 then begin