X-Git-Url: http://www.lcore.org/git/lcore.git/blobdiff_plain/82d4e52fba54be50d719f6185ec381f2dc87fc6c..5ba06ea7bd30494fe55f81a3bc07c8d1eb3702e0:/lsocket.pas

diff --git a/lsocket.pas b/lsocket.pas
index c37a66a..ddee93e 100755
--- a/lsocket.pas
+++ b/lsocket.pas
@@ -54,6 +54,13 @@ interface
       sockets,
     {$endif}
     classes,{pgdebugout,}pgtypes,lcore,fd_utils,binipstuff,dnssync;
+
+{$ifdef ipv6}
+const
+  v4listendefault:boolean=false;
+{$endif}
+
+
 type
   sunB = packed record
     s_b1, s_b2, s_b3, s_b4: byte;
@@ -92,11 +99,14 @@ type
       localaddr:string;
       localport:string;
       proto:string;
-      udp:boolean;
+      udp,dgram:boolean;
       listenqueue:integer;
-      procedure connectionfailedhandler(error:word);
-      procedure connecttimeouthandler(sender:tobject);
-      procedure connectsuccesshandler;
+      {$ifdef secondlistener}
+      secondlistener:tlsocket;
+      lastsessionfromsecond:boolean;
+      procedure secondaccepthandler(sender:tobject;error:word);
+      procedure internalclose(error:word);override;
+      {$endif}
       function getaddrsize:integer;
       procedure connect; virtual;
       procedure realconnect;
@@ -105,7 +115,7 @@ type
       function accept : longint;
       function sendto(dest:TInetSockAddrV;destlen:integer;data:pointer;len:integer):integer; virtual;
       function receivefrom(data:pointer;len:integer;var src:TInetSockAddrV;var srclen:integer):integer; virtual;
-      //procedure internalclose(error:word);override;
+
       procedure handlefdtrigger(readtrigger,writetrigger:boolean); override;
       function send(data:pointer;len:integer):integer;override;
       procedure sendstr(const str : string);override;
@@ -118,6 +128,14 @@ type
       function getXport:string; virtual;
       function getpeerport:string; virtual;
       constructor Create(AOwner: TComponent); override;
+
+      //this one has to be kept public for now because lcorewsaasyncselect calls it
+      procedure connectionfailedhandler(error:word);
+    private
+      procedure taskcallconnectionfailedhandler(wparam,lparam : longint);
+
+      procedure connecttimeouthandler(sender:tobject);
+      procedure connectsuccesshandler;
       {$ifdef win32}
         procedure myfdclose(fd : integer); override;
         function myfdwrite(fd: LongInt;const buf;size: LongInt):LongInt; override;
@@ -129,14 +147,6 @@ type
   twsocket=tlsocket; {easy}
 
 
-{!!!function longipdns(s:string):longint;}
-
-{$ifdef ipv6}
-const
-  v4listendefault:boolean=false;
-{$endif}
-
-
 const
   TCP_NODELAY=1;
   IPPROTO_TCP=6;
@@ -153,27 +163,51 @@ end;
 
 procedure tlsocket.realconnect;
 var
-  a:integer;
-
+  a,b:integer;
 begin
-//  writeln('trying to connect to ',ipbintostr(biniplist_get(biniplist,currentip)),'#',port);
+  //writeln('trying to connect to ',ipbintostr(biniplist_get(biniplist,currentip)),'#',port);
   makeinaddrv(biniplist_get(biniplist,currentip),port,inaddr);
   inc(currentip);
   if (currentip >= biniplist_getcount(biniplist)) then trymoreips := false;
-  udp := uppercase(proto) = 'UDP';
-  if udp then a := SOCK_DGRAM else a := SOCK_STREAM;
-  a := Socket(inaddr.inaddr.family,a,0);
+
+  udp := false;
+  if (uppercase(proto) = 'UDP') then begin
+    b := IPPROTO_UDP;
+    a := SOCK_DGRAM;
+    udp := true;
+    dgram := true;
+  end else if (uppercase(proto) = 'TCP') or (uppercase(proto) = '') then begin
+    b := IPPROTO_TCP;
+    a := SOCK_STREAM;
+    dgram := false;
+  end else if (uppercase(proto) = 'ICMP') or (strtointdef(proto,256) < 256) then begin
+    b := strtointdef(proto,IPPROTO_ICMP);
+    a := SOCK_RAW;
+    dgram := true;
+  end else begin
+    raise ESocketException.create('unrecognised protocol');
+  end;
+
+  a := Socket(inaddr.inaddr.family,a,b);
   //writeln(ord(inaddr.inaddr.family));
   if a = -1 then begin
-    lasterror := {$ifdef win32}getlasterror{$else}socketerror{$endif};
-    raise esocketexception.create('unable to create socket');
+    //unable to create socket, fire an error event (better to use an error event
+    //to avoid poor interaction with multilistener stuff.
+    //a socket value of -2 is a special value to say there is no socket but
+    //we want internalclose to act as if there was
+    fdhandlein := -2;
+    fdhandleout := -2;
+    tltask.create(taskcallconnectionfailedhandler,self,{$ifdef win32}wsagetlasterror{$else}socketerror{$endif},0);
+    exit;
   end;
   try
     dup(a);
     bindsocket;
-    if udp then begin
+    if dgram then begin
       {$ifndef win32}
         SetSocketOptions(fdhandleout, SOL_SOCKET, SO_BROADCAST, 'TRUE', Length('TRUE'));
+      {$else}
+        SetSockOpt(fdhandleout, SOL_SOCKET, SO_BROADCAST, 'TRUE', Length('TRUE'));
       {$endif}
       state := wsconnected;
       if assigned(onsessionconnected) then onsessionconnected(self,0);
@@ -226,7 +260,6 @@ begin
   currentip := 0;
   if not assigned(connecttimeout) then begin
     connecttimeout := tltimer.create(self);
-    connecttimeout.Tag := integer(self);
     connecttimeout.ontimer := connecttimeouthandler;
     connecttimeout.interval := 2500;
     connecttimeout.enabled := false;
@@ -236,7 +269,7 @@ end;
 
 procedure tlsocket.sendstr(const str : string);
 begin
-  if udp then begin
+  if dgram then begin
     send(@str[1],length(str))
   end else begin
     inherited sendstr(str);
@@ -245,7 +278,7 @@ end;
 
 function tlsocket.send(data:pointer;len:integer):integer;
 begin
-  if udp then begin
+  if dgram then begin
 //    writeln('sending to '+ipbintostr(inaddrvtobinip(inaddr)),' ',htons(inaddr.inaddr.port),' ',len,' bytes');
     result := sendto(inaddr,getaddrsize,data,len);
 
@@ -259,8 +292,14 @@ end;
 
 function tlsocket.receive(Buf:Pointer;BufSize:integer):integer;
 begin
-  if udp then begin
-    result := myfdread(self.fdhandlein,buf^,bufsize);
+  if dgram then begin
+    {$ifdef secondlistener}
+    if lastsessionfromsecond then begin
+      result := secondlistener.receive(buf,bufsize);
+      lastsessionfromsecond := false;
+    end else
+    {$endif}
+      result := myfdread(self.fdhandlein,buf^,bufsize);
   end else begin
     result := inherited receive(buf,bufsize);
   end;
@@ -282,13 +321,12 @@ begin
         localaddr := '0.0.0.0';
       end;
       //gethostbyname(localaddr,host);
-
       inaddrtempsize := makeinaddrv(forwardlookup(localaddr,0),localport,inaddrtemp);
 
       If Bind(fdhandlein,inaddrtempx,inaddrtempsize)<> {$ifdef win32}0{$else}true{$endif} Then begin
         state := wsclosed;
         lasterror := {$ifdef win32}getlasterror{$else}socketerror{$endif};
-        raise ESocketException.create('unable to bind, error '+inttostr(lasterror));
+        raise ESocketException.create('unable to bind on address '+localaddr+'#'+localport+', error '+inttostr(lasterror));
       end;
       state := wsbound;
     end;
@@ -309,7 +347,10 @@ var
 begin
   if state <> wsclosed then close;
   udp := uppercase(proto) = 'UDP';
-  if udp then socktype := SOCK_DGRAM else socktype := SOCK_STREAM;
+  if udp then begin
+    socktype := SOCK_DGRAM;
+    dgram := true;
+  end else socktype := SOCK_STREAM;
   origaddr := addr;
 
   if addr = '' then begin
@@ -329,7 +370,8 @@ begin
     fdhandlein := socket(AF_INET,socktype,0);
   end;
   {$endif}
-  if fdhandlein = -1 then raise ESocketException.create('unable to create socket');
+
+  if fdhandlein = -1 then raise ESocketException.create('unable to create socket'{$ifdef win32}+' error='+inttostr(wsagetlasterror){$endif});
   dupnowatch(fdhandlein); // sets up maxs and copies handle to fdhandleout among other things
   //eventcore.setfdreverse(fdhandlein,self); //already taken care of by dup
   state := wsclosed; // then set this back as it was an undesired side effect of dup
@@ -349,14 +391,38 @@ begin
     if not udp then begin
       {!!! allow custom queue length? default 5}
       if listenqueue = 0 then listenqueue := 5;
-      If {$ifdef win32}winsock{$else}sockets{$endif}.Listen(fdhandlein,listenqueue)<>{$ifdef win32}0{$else}true{$endif} Then raise esocketexception.create('unable to listen');
+      If {$ifdef win32}winsock{$else}sockets{$endif}.Listen(fdhandlein,listenqueue)<>{$ifdef win32}0{$else}true{$endif} Then raise
+esocketexception.create('unable to listen');
       state := wsListening;
     end else begin
       {$ifndef win32}
         SetSocketOptions(fdhandleout, SOL_SOCKET, SO_BROADCAST, 'TRUE', Length('TRUE'));
+      {$else}
+        SetSockOpt(fdhandleout, SOL_SOCKET, SO_BROADCAST, 'TRUE', Length('TRUE'));
       {$endif}
       state := wsconnected;
     end;
+
+    {$ifdef secondlistener}
+    //listening on ::. try to listen on 0.0.0.0 as well for platforms which don't already do that
+    if addr = '::' then begin
+      secondlistener := tlsocket.create(nil);
+      secondlistener.proto := proto;
+      secondlistener.addr := '0.0.0.0';
+      secondlistener.port := port;
+      if udp then begin
+        secondlistener.ondataavailable := secondaccepthandler;
+      end else begin
+        secondlistener.onsessionAvailable := secondaccepthandler;
+      end;
+      try
+        secondlistener.listen;
+      except
+        secondlistener.destroy;
+        secondlistener := nil;
+      end;
+    end;
+    {$endif}
   finally
     if state = wsclosed then begin
       if fdhandlein >= 0 then begin
@@ -374,12 +440,40 @@ begin
   //writeln('listened on addr '+addr+':'+port+' '+proto+' using socket number ',fdhandlein);
 end;
 
+{$ifdef secondlistener}
+procedure tlsocket.internalclose(error:word);
+begin
+  if assigned(secondlistener) then begin
+    secondlistener.destroy;
+    secondlistener := nil;
+  end;
+  inherited internalclose(error);
+end;
+
+procedure tlsocket.secondaccepthandler;
+begin
+  lastsessionfromsecond := true;
+  if udp then begin
+    ondataavailable(self,error);
+  end else begin
+    if assigned(onsessionavailable) then onsessionavailable(self,error);
+  end;
+end;
+{$endif}
+
 function tlsocket.accept : longint;
 var
   FromAddrSize     : LongInt;        // i don't realy know what to do with these at this
   FromAddr         : TInetSockAddrV;  // at this point time will tell :)
   a:integer;
 begin
+  {$ifdef secondlistener}
+  if (lastsessionfromsecond) then begin
+    lastsessionfromsecond := false;
+    result := secondlistener.accept;
+    exit;
+  end;
+  {$endif}
 
   FromAddrSize := Sizeof(FromAddr);
   {$ifdef win32}
@@ -405,14 +499,47 @@ function tlsocket.sendto(dest:TInetSockAddrV;destlen:integer;data:pointer;len:in
 var
   destx : {$ifdef win32}winsock.TSockAddr{$else}TInetSockAddrV{$endif} absolute dest;
 begin
+  {$ifdef secondlistener}
+  if assigned(secondlistener) then if (dest.inaddr.family = AF_INET) then begin
+    result := secondlistener.sendto(dest,destlen,data,len);
+    exit;
+  end;
+  {$endif}
   result := {$ifdef win32}winsock{$else}sockets{$endif}.sendto(self.fdhandleout,data^,len,0,destx,destlen);
 end;
 
 function tlsocket.receivefrom(data:pointer;len:integer;var src:TInetSockAddrV;var srclen:integer):integer;
 var
-  srcx : {$ifdef win32}winsock.TSockAddr{$else}TInetSockAddrV{$endif} absolute src;
+  tempsrc:TInetSockAddrV;
+  tempsrclen:integer;
+  srcx : {$ifdef win32}winsock.TSockAddr{$else}TInetSockAddrV{$endif} absolute tempsrc;
+  biniptemp:tbinip;
 begin
-  result := {$ifdef win32}winsock{$else}sockets{$endif}.recvfrom(self.fdhandlein,data^,len,0,srcx,srclen);
+  {$ifdef secondlistener}
+  if assigned(secondlistener) then if lastsessionfromsecond then begin
+    lastsessionfromsecond := false;
+    result := secondlistener.receivefrom(data,len,src,srclen);
+    exit;
+  end;
+  {$endif}
+  tempsrclen := sizeof(tempsrc);
+  result := {$ifdef win32}winsock{$else}sockets{$endif}.recvfrom(self.fdhandlein,data^,len,0,srcx,tempsrclen);
+
+  {$ifdef ipv6}
+  biniptemp := inaddrvtobinip(tempsrc);
+  if needconverttov4(biniptemp) then begin
+    converttov4(biniptemp);
+    tempsrclen := makeinaddrv(biniptemp,inttostr(ntohs(tempsrc.InAddr.port)),tempsrc);
+  end;
+  {$endif}
+
+  move(tempsrc,src,srclen);
+  srclen := tempsrclen;
+end;
+
+procedure tlsocket.taskcallconnectionfailedhandler(wparam,lparam : longint);
+begin
+  connectionfailedhandler(wparam);
 end;
 
 procedure tlsocket.connectionfailedhandler(error:word);
@@ -451,7 +578,7 @@ begin
     eventcore.rmasterclr(fdhandlein);
     if assigned(onsessionAvailable) then onsessionAvailable(self,0);
   end;
-  if udp and readtrigger then begin
+  if dgram and readtrigger then begin
     if assigned(ondataAvailable) then ondataAvailable(self,0);
     {!!!test}
     exit;
@@ -529,15 +656,7 @@ begin
   {$else}
     sockets.getsocketname(self.fdhandlein,addr,i);
   {$endif}
-  binip.family := addr.inaddr.family;
-  {$ifdef ipv6}
-  if addr.inaddr6.sin6_family = AF_INET6 then begin
-    binip.ip6 := addr.inaddr6.sin6_addr;
-  end else
-  {$endif}
-  begin
-    binip.ip := addr.inaddr.addr;
-  end;
+  binip := inaddrvtobinip(addr);
   converttov4(binip);
 end;
 
@@ -554,15 +673,7 @@ begin
     sockets.getpeername(self.fdhandlein,addr,i);
   {$endif}
 
-  binip.family := addr.inaddr.family;
-  {$ifdef ipv6}
-  if addr.inaddr6.sin6_family = AF_INET6 then begin
-    binip.ip6 := addr.inaddr6.sin6_addr;
-  end else
-  {$endif}
-  begin
-    binip.ip := addr.inaddr.addr;
-  end;
+  binip := inaddrvtobinip(addr);
   converttov4(binip);
 end;