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{==============================================================================|
| Project : Ararat Synapse | 001.001.005 |
|==============================================================================|
| Content: Socket Independent Platform Layer - FreePascal definition include |
|==============================================================================|
| Copyright (c)2006-2013, 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)2006-2013. |
| All Rights Reserved. |
|==============================================================================|
| Contributor(s): |
|==============================================================================|
| History: see HISTORY.HTM from distribution package |
| (Found at URL: http://www.ararat.cz/synapse/) |
|==============================================================================}
{:@exclude}
{$IFDEF FPC}
{For FreePascal 2.x.x}
//{$DEFINE FORCEOLDAPI}
{Note about define FORCEOLDAPI:
If you activate this compiler directive, then is allways used old socket API
for name resolution. If you leave this directive inactive, then the new API
is used, when running system allows it.
For IPv6 support you must have new API!
}
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
{$H+}
{$ifdef FreeBSD}
{$DEFINE SOCK_HAS_SINLEN} // BSD definition of scoketaddr
{$endif}
{$ifdef darwin}
{$DEFINE SOCK_HAS_SINLEN} // BSD definition of scoketaddr
{$endif}
interface
uses
SyncObjs, SysUtils, Classes,
synafpc, BaseUnix, Unix, termio, sockets, netdb;
function InitSocketInterface(stack: string): Boolean;
function DestroySocketInterface: Boolean;
const
DLLStackName = '';
WinsockLevel = $0202;
cLocalHost = '127.0.0.1';
cAnyHost = '0.0.0.0';
c6AnyHost = '::0';
c6Localhost = '::1';
cLocalHostStr = 'localhost';
type
TSocket = longint;
TAddrFamily = integer;
TMemory = pointer;
type
TFDSet = Baseunix.TFDSet;
PFDSet = ^TFDSet;
Ptimeval = Baseunix.ptimeval;
Ttimeval = Baseunix.ttimeval;
const
FIONREAD = termio.FIONREAD;
FIONBIO = termio.FIONBIO;
FIOASYNC = termio.FIOASYNC;
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;
type
PInAddr = ^TInAddr;
TInAddr = sockets.in_addr;
PSockAddrIn = ^TSockAddrIn;
TSockAddrIn = sockets.TInetSockAddr;
TIP_mreq = record
imr_multiaddr: TInAddr; // IP multicast address of group
imr_interface: TInAddr; // local IP address of interface
end;
PInAddr6 = ^TInAddr6;
TInAddr6 = sockets.Tin6_addr;
PSockAddrIn6 = ^TSockAddrIn6;
TSockAddrIn6 = sockets.TInetSockAddr6;
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;
Const
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_ROUTER_ALERT = sockets.IP_ROUTER_ALERT; { bool }
IP_RECVOPTS = sockets.IP_RECVOPTS; { bool }
IP_RETOPTS = sockets.IP_RETOPTS; { bool }
// IP_PKTINFO = sockets.IP_PKTINFO; { bool }
// IP_PKTOPTIONS = sockets.IP_PKTOPTIONS;
// IP_PMTUDISC = sockets.IP_PMTUDISC; { obsolete name? }
// IP_MTU_DISCOVER = sockets.IP_MTU_DISCOVER; { int; see below }
// IP_RECVERR = sockets.IP_RECVERR; { bool }
// IP_RECVTTL = sockets.IP_RECVTTL; { bool }
// IP_RECVTOS = sockets.IP_RECVTOS; { 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_NO_CHECK = sockets.SO_NO_CHECK;
// SO_PRIORITY = sockets.SO_PRIORITY;
SO_LINGER = sockets.SO_LINGER;
// SO_BSDCOMPAT = sockets.SO_BSDCOMPAT;
// SO_REUSEPORT = sockets.SO_REUSEPORT;
// SO_PASSCRED = sockets.SO_PASSCRED;
// SO_PEERCRED = sockets.SO_PEERCRED;
SO_RCVLOWAT = sockets.SO_RCVLOWAT;
SO_SNDLOWAT = sockets.SO_SNDLOWAT;
SO_RCVTIMEO = sockets.SO_RCVTIMEO;
SO_SNDTIMEO = sockets.SO_SNDTIMEO;
{ Security levels - as per NRL IPv6 - don't actually do anything }
// SO_SECURITY_AUTHENTICATION = sockets.SO_SECURITY_AUTHENTICATION;
// SO_SECURITY_ENCRYPTION_TRANSPORT = sockets.SO_SECURITY_ENCRYPTION_TRANSPORT;
// SO_SECURITY_ENCRYPTION_NETWORK = sockets.SO_SECURITY_ENCRYPTION_NETWORK;
// SO_BINDTODEVICE = sockets.SO_BINDTODEVICE;
{ Socket filtering }
// SO_ATTACH_FILTER = sockets.SO_ATTACH_FILTER;
// SO_DETACH_FILTER = sockets.SO_DETACH_FILTER;
{$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;
const
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 }
{ TCP options. }
TCP_NODELAY = $0001;
{ Address families. }
AF_UNSPEC = 0; { unspecified }
AF_INET = 2; { internetwork: UDP, TCP, etc. }
AF_INET6 = 10; { Internetwork Version 6 }
AF_MAX = 24;
{ Protocol families, same as address families for now. }
PF_UNSPEC = AF_UNSPEC;
PF_INET = AF_INET;
PF_INET6 = AF_INET6;
PF_MAX = AF_MAX;
type
{ Structure used for manipulating linger option. }
PLinger = ^TLinger;
TLinger = packed record
l_onoff: integer;
l_linger: integer;
end;
const
MSG_OOB = sockets.MSG_OOB; // Process out-of-band data.
MSG_PEEK = sockets.MSG_PEEK; // Peek at incoming messages.
{$ifdef DARWIN}
MSG_NOSIGNAL = $20000; // Do not generate SIGPIPE.
// Works under MAC OS X, but is undocumented,
// So FPC doesn't include it
{$else}
MSG_NOSIGNAL = sockets.MSG_NOSIGNAL; // Do not generate SIGPIPE.
{$endif}
const
WSAEINTR = ESysEINTR;
WSAEBADF = ESysEBADF;
WSAEACCES = ESysEACCES;
WSAEFAULT = ESysEFAULT;
WSAEINVAL = ESysEINVAL;
WSAEMFILE = ESysEMFILE;
WSAEWOULDBLOCK = ESysEWOULDBLOCK;
WSAEINPROGRESS = ESysEINPROGRESS;
WSAEALREADY = ESysEALREADY;
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;
WSATRY_AGAIN = 2;
WSANO_RECOVERY = 3;
WSANO_DATA = -6;
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;
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);
{=============================================================================}
var
SynSockCS: SyncObjs.TCriticalSection;
SockEnhancedApi: Boolean;
SockWship6Api: Boolean;
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: TMemory;
optlen: Integer): Integer;
function GetSockOpt(s: TSocket; level, optname: Integer; optval: TMemory;
var optlen: Integer): Integer;
function Send(s: TSocket; Buf: TMemory; len, flags: Integer): Integer;
function Recv(s: TSocket; Buf: TMemory; len, flags: Integer): Integer;
function SendTo(s: TSocket; Buf: TMemory; len, flags: Integer; addrto: TVarSin): Integer;
function RecvFrom(s: TSocket; Buf: TMemory; 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; IP, Port: string; Family, SockProtocol, SockType: integer; PreferIP4: Boolean): integer;
function GetSinIP(Sin: TVarSin): string;
function GetSinPort(Sin: TVarSin): Integer;
procedure ResolveNameToIP(Name: string; Family, SockProtocol, SockType: integer; const IPList: TStrings);
function ResolveIPToName(IP: string; Family, SockProtocol, SockType: integer): string;
function ResolvePort(Port: string; Family, SockProtocol, SockType: integer): Word;
{==============================================================================}
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;
szDescription := 'Synsock - Synapse Platform Independent Socket Layer';
szSystemStatus := 'Running on Unix/Linux by FreePascal';
iMaxSockets := 32768;
iMaxUdpDg := 8192;
end;
Result := 0;
end;
function WSACleanup: Integer;
begin
Result := 0;
end;
function WSAGetLastError: Integer;
begin
Result := fpGetErrno;
end;
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;
{=============================================================================}
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
if fpBind(s, @addr, SizeOfVarSin(addr)) = 0 then
Result := 0
else
Result := SOCKET_ERROR;
end;
function Connect(s: TSocket; const name: TVarSin): Integer;
begin
if fpConnect(s, @name, SizeOfVarSin(name)) = 0 then
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);
Result := fpGetSockName(s, @name, @Len);
end;
function GetPeerName(s: TSocket; var name: TVarSin): Integer;
var
len: integer;
begin
len := SizeOf(name);
FillChar(name, len, 0);
Result := fpGetPeerName(s, @name, @Len);
end;
function GetHostName: string;
begin
Result := unix.GetHostName;
end;
function Send(s: TSocket; Buf: TMemory; len, flags: Integer): Integer;
begin
Result := fpSend(s, pointer(Buf), len, flags);
end;
function Recv(s: TSocket; Buf: TMemory; len, flags: Integer): Integer;
begin
Result := fpRecv(s, pointer(Buf), len, flags);
end;
function SendTo(s: TSocket; Buf: TMemory; len, flags: Integer; addrto: TVarSin): Integer;
begin
Result := fpSendTo(s, pointer(Buf), len, flags, @addrto, SizeOfVarSin(addrto));
end;
function RecvFrom(s: TSocket; Buf: TMemory; len, flags: Integer; var from: TVarSin): Integer;
var
x: integer;
begin
x := SizeOf(from);
Result := fpRecvFrom(s, pointer(Buf), len, flags, @from, @x);
end;
function Accept(s: TSocket; var addr: TVarSin): TSocket;
var
x: integer;
begin
x := SizeOf(addr);
Result := fpAccept(s, @addr, @x);
end;
function Shutdown(s: TSocket; how: Integer): Integer;
begin
Result := fpShutdown(s, how);
end;
function SetSockOpt(s: TSocket; level, optname: Integer; optval: Tmemory;
optlen: Integer): Integer;
begin
Result := fpsetsockopt(s, level, optname, pointer(optval), optlen);
end;
function GetSockOpt(s: TSocket; level, optname: Integer; optval: Tmemory;
var optlen: Integer): Integer;
begin
Result := fpgetsockopt(s, level, optname, pointer(optval), @optlen);
end;
function ntohs(netshort: word): word;
begin
Result := sockets.ntohs(NetShort);
end;
function ntohl(netlong: longword): longword;
begin
Result := sockets.ntohl(NetLong);
end;
function Listen(s: TSocket; backlog: Integer): Integer;
begin
if fpListen(s, backlog) = 0 then
Result := 0
else
Result := SOCKET_ERROR;
end;
function IoctlSocket(s: TSocket; cmd: DWORD; var arg: integer): Integer;
begin
Result := fpIoctl(s, cmd, @arg);
end;
function htons(hostshort: word): word;
begin
Result := sockets.htons(Hostshort);
end;
function htonl(hostlong: longword): longword;
begin
Result := sockets.htonl(HostLong);
end;
function CloseSocket(s: TSocket): Integer;
begin
Result := sockets.CloseSocket(s);
end;
function Socket(af, Struc, Protocol: Integer): TSocket;
{$IFDEF DARWIN}
var
on_off: integer;
{$ENDIF}
begin
Result := fpSocket(af, struc, protocol);
// ##### Patch for Mac OS to avoid "Project XXX raised exception class 'External: SIGPIPE'" error.
{$IFDEF DARWIN}
if Result <> INVALID_SOCKET then
begin
on_off := 1;
synsock.SetSockOpt(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 := fpSelect(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 SetVarSin(var Sin: TVarSin; 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 in_addr;
a6: array [1..1] of Tin6_addr;
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
f1 := AF_INET;
f2 := AF_INET6;
TwoPass := True;
end
else
begin
f2 := AF_INET;
f1 := AF_INET6;
TwoPass := True;
end;
end
else
f1 := Family;
Result := GetAddr(f1);
if Result <> 0 then
if TwoPass then
Result := GetAddr(f2);
end;
function GetSinIP(Sin: TVarSin): string;
begin
Result := '';
case sin.AddressFamily of
AF_INET:
begin
result := NetAddrToStr(sin.sin_addr);
end;
AF_INET6:
begin
result := NetAddrToStr6(sin.sin6_addr);
end;
end;
end;
function GetSinPort(Sin: TVarSin): Integer;
begin
if (Sin.sin_family = AF_INET6) then
Result := synsock.ntohs(Sin.sin6_port)
else
Result := synsock.ntohs(Sin.sin_port);
end;
procedure ResolveNameToIP(Name: string; Family, SockProtocol, SockType: integer; const IPList: TStrings);
var
x, n: integer;
a4: array [1..255] of in_addr;
a6: array [1..255] of Tin6_addr;
he: THostEntry;
begin
IPList.Clear;
if (family = AF_INET) or (family = AF_UNSPEC) then
begin
if lowercase(name) = cLocalHostStr then
IpList.Add(cLocalHost)
else
begin
a4[1] := StrTonetAddr(name);
if a4[1].s_addr = INADDR_ANY then
if GetHostByName(name, he) then
begin
a4[1]:=HostToNet(he.Addr);
x := 1;
end
else
x := Resolvename(name, a4)
else
x := 1;
for n := 1 to x do
IpList.Add(netaddrToStr(a4[n]));
end;
end;
if (family = AF_INET6) or (family = AF_UNSPEC) then
begin
if lowercase(name) = cLocalHostStr then
IpList.Add(c6LocalHost)
else
begin
a6[1] := StrTonetAddr6(name);
if IN6_IS_ADDR_UNSPECIFIED(@a6[1]) then
x := Resolvename6(name, a6)
else
x := 1;
for n := 1 to x do
IpList.Add(netaddrToStr6(a6[n]));
end;
end;
if IPList.Count = 0 then
IPList.Add(cLocalHost);
end;
function ResolvePort(Port: string; Family, SockProtocol, SockType: integer): Word;
var
ProtoEnt: TProtocolEntry;
ServEnt: TServiceEntry;
begin
Result := synsock.htons(StrToIntDef(Port, 0));
if Result = 0 then
begin
ProtoEnt.Name := '';
GetProtocolByNumber(SockProtocol, ProtoEnt);
ServEnt.port := 0;
GetServiceByName(Port, ProtoEnt.Name, ServEnt);
Result := ServEnt.port;
end;
end;
function ResolveIPToName(IP: string; Family, SockProtocol, SockType: integer): string;
var
n: integer;
a4: array [1..1] of in_addr;
a6: array [1..1] of Tin6_addr;
a: array [1..1] of string;
begin
Result := IP;
a4[1] := StrToNetAddr(IP);
if a4[1].s_addr <> INADDR_ANY then
begin
//why ResolveAddress need address in HOST order? :-O
n := ResolveAddress(nettohost(a4[1]), a);
if n > 0 then
Result := a[1];
end
else
begin
a6[1] := StrToNetAddr6(IP);
n := ResolveAddress6(a6[1], a);
if n > 0 then
Result := a[1];
end;
end;
{=============================================================================}
function InitSocketInterface(stack: string): Boolean;
begin
SockEnhancedApi := False;
SockWship6Api := False;
// Libc.Signal(Libc.SIGPIPE, TSignalHandler(Libc.SIG_IGN));
Result := True;
end;
function DestroySocketInterface: Boolean;
begin
Result := True;
end;
initialization
begin
SynSockCS := SyncObjs.TCriticalSection.Create;
SET_IN6_IF_ADDR_ANY (@in6addr_any);
SET_LOOPBACK_ADDR6 (@in6addr_loopback);
end;
finalization
begin
SynSockCS.Free;
end;
{$ENDIF}
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