X-Git-Url: http://www.lcore.org/git/lcore.git/blobdiff_plain/6cb6b7ede2d178e03fa817bc28474c175f5a93b9..71f094bad8c68b2a3d096b436dc74cf4d9e2895a:/binipstuff.pas?ds=sidebyside

diff --git a/binipstuff.pas b/binipstuff.pas
old mode 100755
new mode 100644
index 0c23533..1d7a7c2
--- a/binipstuff.pas
+++ b/binipstuff.pas
@@ -4,37 +4,42 @@
   ----------------------------------------------------------------------------- }
 unit binipstuff;
 
+{$ifdef fpc}
+{$mode delphi}
+{$endif}
+
 interface
 
 {$include lcoreconfig.inc}
 
-{$ifndef win32}
-{$ifdef ipv6}
-uses sockets;
-{$endif}
+uses
+{$ifndef mswindows}
+  sockets,
 {$endif}
+  pgtypes;
 
-{$ifdef fpc}
-  {$mode delphi}
-{$endif}
-{$ifdef cpu386}{$define i386}{$endif}
-{$ifdef i386}{$define ENDIAN_LITTLE}{$endif}
+
+{$include pgtypes.inc}
 
 {$include uint32.inc}
 
 const
-  hexchars:array[0..15] of char='0123456789abcdef';
-  AF_INET=2;
-  {$ifdef win32}
+  hexchars:array[0..15] of ansichar='0123456789abcdef';
+  {$ifdef mswindows}
+    AF_INET=2;
     AF_INET6=23;
   {$else}
-    AF_INET6=10;
+    //redeclare these constants so units that use us can use them
+    //without using sockets directly
+    AF_INET=AF_INET;
+    AF_INET6=AF_INET6;
+    //AF_INET6=10;
   {$endif}
 
 type
   {$ifdef ipv6}
     
-    {$ifdef win32}
+    {$ifdef mswindows}
       {$define want_Tin6_addr}
     {$endif}
     {$ifdef ver1_0}
@@ -65,55 +70,59 @@ type
     {$endif}
   end;
 
-  {$ifdef win32}
-    TInetSockAddr = packed Record
-      family:Word;
-      port  :Word;
-      addr  :uint32;
-      pad   :array [1..8] of byte;
-    end;
-    {$ifdef ipv6}
+  {zipplet 20170204: FPC 3.0.0 changed the definition of TInetSockAddr:
+    - http://www.freepascal.org/docs-html/rtl/sockets/tinetsockaddr.html
+    - http://www.freepascal.org/docs-html/rtl/sockets/sockaddr_in.html
+   Due to this, TInetSockAddr -> TLInetSockAddr4 / TLInetSockAddr6
+   Using our own types no matter what OS or compiler version will prevent future problems.
+   Adding "4" to non IPv6 record names improves code clarity }
 
-      TInetSockAddr6 = packed record
-        sin6_family: word;
-        sin6_port: word;
-        sin6_flowinfo: uint32;
-        sin6_addr: tin6_addr;
-        sin6_scope_id: uint32;
-      end;
+  {$ifndef mswindows}
+    //zipplet 20170204: Do we still need to support ver1_0? Perhaps a cleanup is in order.
+    //For now keep supporting it for compatibility.
+    {$ifdef ver1_0}
+      cuint16 = word;
+      cuint32 = dword;
+      sa_family_t = word;
     {$endif}
   {$endif}
 
-
-
-    {$ifdef ipv6}
-    {$ifdef ver1_0}
-      cuint16=word;
-      cuint32=dword;
-      sa_family_t=word;
-
-    {$endif}
+  TLInetSockAddr4 = packed Record
+    family:Word;
+    port  :Word;
+    addr  :uint32;
+    pad   :array [0..7] of byte;   //zipplet 20170204 - originally this was 1..8 for some reason
+  end;
+  
+  {$ifdef ipv6}
+    TLInetSockAddr6 = packed record
+      sin6_family: word;
+      sin6_port: word;
+      sin6_flowinfo: uint32;
+      sin6_addr: tin6_addr;
+      sin6_scope_id: uint32;
+    end;
   {$endif}
+
+  //zipplet 20170204: I did not rename the unioned record. We might want to rename this to TLinetSockAddrv
   TinetSockAddrv = packed record
     case integer of
-      0: (InAddr:TInetSockAddr);
+      0: (InAddr:TLInetSockAddr4);
       {$ifdef ipv6}
-      1: (InAddr6:TInetSockAddr6);
+      1: (InAddr6:TLInetSockAddr6);
       {$endif}
   end;
   Pinetsockaddrv = ^Tinetsockaddrv;
 
   type
-    tsockaddrin=TInetSockAddr;
-
-
+    tsockaddrin=TLInetSockAddr4;
 
 {
 bin IP list code, by beware
 while this is really just a string, on the interface side it must be treated
 as an opaque var which is passed as "var" when it needs to be modified}
 
-  tbiniplist=string;
+  tbiniplist=tbufferstring;
 
 function biniplist_new:tbiniplist;
 procedure biniplist_add(var l:tbiniplist;ip:tbinip);
@@ -123,32 +132,41 @@ procedure biniplist_set(var l:tbiniplist;index:integer;ip:tbinip);
 procedure biniplist_setcount(var l:tbiniplist;newlen:integer);
 procedure biniplist_free(var l:tbiniplist);
 procedure biniplist_addlist(var l:tbiniplist;const l2:tbiniplist);
-function biniplist_tostr(const l:tbiniplist):string;
+function biniplist_tostr(const l:tbiniplist):thostname;
+function isbiniplist(const l:tbiniplist):boolean;
 
 function htons(w:word):word;
 function htonl(i:uint32):uint32;
 
-function ipstrtobin(const s:string;var binip:tbinip):boolean;
-function ipstrtobinf(const s:string):tbinip;
-function ipbintostr(const binip:tbinip):string;
+function ipstrtobin(const s:thostname;var binip:tbinip):boolean;
+function ipstrtobinf(const s:thostname):tbinip;
+function ipbintostr(const binip:tbinip):thostname;
 {$ifdef ipv6}
-function ip6bintostr(const bin:tin6_addr):string;
-function ip6strtobin(const s:string;var bin:tin6_addr):boolean;
+function ip6bintostr(const bin:tin6_addr):thostname;
+function ip6strtobin(const s:thostname;var bin:tin6_addr):boolean;
 {$endif}
 
 function comparebinip(const ip1,ip2:tbinip):boolean;
 procedure maskbits(var binip:tbinip;bits:integer);
 function comparebinipmask(ip1,ip2:tbinip;bits:integer):boolean;
 
+procedure addipsoffamily(var l:tbiniplist;const l2:tbiniplist;family:integer);
+
 {deprecated}
-function longip(s:string):longint;
+function longip(s:thostname):longint;
 
+function needconverttov4(const ip:tbinip):boolean;
 procedure converttov4(var ip:tbinip);
+procedure converttov6(var ip:tbinip);
 
 function inaddrvtobinip(inaddrv:tinetsockaddrv):tbinip;
-function makeinaddrv(addr:tbinip;port:string;var inaddr:tinetsockaddrv):integer;
+function makeinaddrv(addr:tbinip;port:ansistring;var inaddr:tinetsockaddrv):integer;
 function inaddrsize(inaddr:tinetsockaddrv):integer;
 
+function getbinipbitlength(const ip:tbinip):integer;
+function getipstrbitlength(const ip:thostname):integer;
+function getfamilybitlength(family:integer):integer;
+
 implementation
 
 uses sysutils;
@@ -181,7 +199,7 @@ begin
   {$endif}
 end;
 
-function makeinaddrv(addr:tbinip;port:string;var inaddr:tinetsockaddrv):integer;
+function makeinaddrv(addr:tbinip;port:ansistring;var inaddr:tinetsockaddrv):integer;
 begin
   result := 0;
 {  biniptemp := forwardlookup(addr,10);}
@@ -191,14 +209,14 @@ begin
     inAddr.InAddr.family:=AF_INET;
     inAddr.InAddr.port:=htons(strtointdef(port,0));
     inAddr.InAddr.addr:=addr.ip;
-    result := sizeof(tinetsockaddr);
+    result := sizeof(tlinetsockaddr4);
   end else
   {$ifdef ipv6}
   if addr.family = AF_INET6 then begin
     inAddr.InAddr6.sin6_family:=AF_INET6;
     inAddr.InAddr6.sin6_port:=htons(strtointdef(port,0));
     inAddr.InAddr6.sin6_addr:=addr.ip6;
-    result := sizeof(tinetsockaddr6);
+    result := sizeof(tlinetsockaddr6);
   end;
   {$endif}
 end;
@@ -206,18 +224,18 @@ end;
 function inaddrsize(inaddr:tinetsockaddrv):integer;
 begin
   {$ifdef ipv6}
-  if inaddr.inaddr.family = AF_INET6 then result := sizeof(tinetsockaddr6) else
+  if inaddr.inaddr.family = AF_INET6 then result := sizeof(tlinetsockaddr6) else
   {$endif}
-  result := sizeof(tinetsockaddr);
+  result := sizeof(tlinetsockaddr4);
 end;
 
 {internal}
 {converts dotted v4 IP to longint. returns host endian order}
-function longip(s:string):longint;
+function longip(s:thostname):longint;
 var
   l:longint;
   a,b:integer;
-function convertbyte(const s:string):integer;
+function convertbyte(const s:ansistring):integer;
 begin
   result := strtointdef(s,-1);
   if result < 0 then begin
@@ -268,7 +286,7 @@ begin
   ipstrtobin(s,result);
 end;
 
-function ipstrtobin(const s:string;var binip:tbinip):boolean;
+function ipstrtobin(const s:thostname;var binip:tbinip):boolean;
 begin
   binip.family := 0;
   result := false;
@@ -282,7 +300,10 @@ begin
   {$endif}
 
   {try v4}
-  binip.ip := htonl(longip(s));
+  // zipplet: htonl() expects a uint32 but longip() spits out longint.
+  // Because longip() is deprecated, we do not fix it but typecast.
+  //binip.ip := htonl(longip(s));
+  binip.ip := htonl(uint32(longip(s)));
   if (binip.ip <> 0) or (s = '0.0.0.0') then begin
     result := true;
     binip.family := AF_INET;
@@ -290,7 +311,7 @@ begin
   end;
 end;
 
-function ipbintostr(const binip:tbinip):string;
+function ipbintostr(const binip:tbinip):thostname;
 var
   a:integer;
 begin
@@ -313,11 +334,11 @@ end;
 
 {
 IPv6 address binary to/from string conversion routines
-written by beware (steendijk at xs4all dot nl)
+written by beware
 
 - implementation does not depend on other ipv6 code such as the tin6_addr type,
   the parameter can also be untyped.
-- it is host endian neutral - binary format is aways network order
+- it is host endian neutral - binary format is always network order
 - it supports compression of zeroes
 - it supports ::ffff:192.168.12.34 style addresses
 - they are made to do the Right Thing, more efficient implementations are possible
@@ -326,9 +347,9 @@ written by beware (steendijk at xs4all dot nl)
 {fpc has hostaddrtostr6 and strtohostaddr6 but the later isnt implemented yet}
 
 
-function ip6bintostr(const bin:tin6_addr):string;
+function ip6bintostr(const bin:tin6_addr):thostname;
 {base16 with lowercase output}
-function makehex(w:word):string;
+function makehex(w:word):ansistring;
 begin
   result := '';
   if w >= 4096 then result := result + hexchars[w shr 12];
@@ -368,6 +389,13 @@ begin
       end;
     end;
   end;
+
+  {run length at least 2 0 words}
+  if (runlength = 1) then begin
+    runlength := 0;
+    runbegin := 0;
+  end;
+
   result := '';
   for a := 0 to runbegin-1 do begin
     if (a <> 0) then result := result + ':';
@@ -384,10 +412,10 @@ begin
   end;
 end;
 
-function ip6strtobin(const s:string;var bin:tin6_addr):boolean;
+function ip6strtobin(const s:thostname;var bin:tin6_addr):boolean;
 var
   a,b:integer;
-  fields:array[0..7] of string;
+  fields:array[0..7] of ansistring;
   fieldcount:integer;
   emptyfield:integer;
   wordcount:integer;
@@ -498,25 +526,62 @@ begin
   result := comparebinip(ip1,ip2);
 end;
 
-{converts a binary IP to v4 if it is a v6 IP in the v4 range}
-procedure converttov4(var ip:tbinip);
+function needconverttov4(const ip:tbinip):boolean;
 begin
   {$ifdef ipv6}
   if ip.family = AF_INET6 then begin
     if (ip.ip6.u6_addr32[0] = 0) and (ip.ip6.u6_addr32[1] = 0) and
     (ip.ip6.u6_addr16[4] = 0) and (ip.ip6.u6_addr16[5] = $ffff) then begin
-      ip.family := AF_INET;
-      ip.ip := ip.ip6.s6_addr32[3];
+      result := true;
+      exit;
     end;
   end;
   {$endif}
+
+  result := false;
 end;
 
-{------------------------------------------------------------------------------}
+{converts a binary IP to v4 if it is a v6 IP in the v4 range}
+procedure converttov4(var ip:tbinip);
+begin
+  {$ifdef ipv6}
+  if needconverttov4(ip) then begin
+    ip.family := AF_INET;
+    ip.ip := ip.ip6.s6_addr32[3];
+  end;
+  {$endif}
+end;
+
+
+{converts a binary IP to v6 if it is a v4 IP}
+procedure converttov6(var ip:tbinip);
+begin
+  {$ifdef ipv6}
+    if ip.family = AF_INET then begin
+      ip.family := AF_INET6;
+      ip.ip6.s6_addr32[3] := ip.ip;
+      ip.ip6.u6_addr32[0] := 0;
+      ip.ip6.u6_addr32[1] := 0;
+      ip.ip6.u6_addr16[4] := 0;
+      ip.ip6.u6_addr16[5] := $ffff;
+    end;
+  {$endif}
+end;
+
+
+{-----------biniplist stuff--------------------------------------------------}
 
+const
+  biniplist_prefix: ansistring = 'bipl'#0;
+  //fpc 1.0.x doesn't seem to like use of length function in a constant 
+  //definition
+  //biniplist_prefixlen=length(biniplist_prefix);
+
+  biniplist_prefixlen=5;
+  
 function biniplist_new:tbiniplist;
 begin
-  result := '';
+  result := biniplist_prefix;
 end;
 
 procedure biniplist_add(var l:tbiniplist;ip:tbinip);
@@ -530,7 +595,7 @@ end;
 
 function biniplist_getcount(const l:tbiniplist):integer;
 begin
-  result := length(l) div sizeof(tbinip);
+  result := (length(l)-biniplist_prefixlen) div sizeof(tbinip);
 end;
 
 function biniplist_get(const l:tbiniplist;index:integer):tbinip;
@@ -539,18 +604,18 @@ begin
     fillchar(result,sizeof(result),0);
     exit;
   end;
-  move(l[index*sizeof(tbinip)+1],result,sizeof(result));
+  move(l[index*sizeof(tbinip)+1+biniplist_prefixlen],result,sizeof(result));
 end;
 
 procedure biniplist_set(var l:tbiniplist;index:integer;ip:tbinip);
 begin
   uniquestring(l);
-  move(ip,l[index*sizeof(tbinip)+1],sizeof(ip));
+  move(ip,l[index*sizeof(tbinip)+1+biniplist_prefixlen],sizeof(ip));
 end;
 
 procedure biniplist_setcount(var l:tbiniplist;newlen:integer);
 begin
-  setlength(l,sizeof(tbinip)*newlen);
+  setlength(l,(sizeof(tbinip)*newlen)+biniplist_prefixlen);
 end;
 
 procedure biniplist_free(var l:tbiniplist);
@@ -560,10 +625,10 @@ end;
 
 procedure biniplist_addlist;
 begin
-  l := l + l2;
+  l := l + copy(l2,biniplist_prefixlen+1,maxlongint);
 end;
 
-function biniplist_tostr(const l:tbiniplist):string;
+function biniplist_tostr(const l:tbiniplist):thostname;
 var
   a:integer;
 begin
@@ -575,4 +640,50 @@ begin
   result := result + ')';
 end;
 
+function isbiniplist(const l:tbiniplist):boolean;
+var
+  i : integer;
+begin
+  for i := 1 to biniplist_prefixlen do begin
+    if biniplist_prefix[i] <> l[i] then begin
+      result := false;
+      exit;
+    end;
+  end;
+  result := true;
+end;
+
+procedure addipsoffamily(var l:tbiniplist;const l2:tbiniplist;family:integer);
+var
+  a:integer;
+  biniptemp:tbinip;
+begin
+  for a := biniplist_getcount(l2)-1 downto 0 do begin
+    biniptemp := biniplist_get(l2,a);
+    if (biniptemp.family = family) then biniplist_add(l,biniptemp);
+  end;
+end;
+
+function getfamilybitlength(family:integer):integer;
+begin
+  {$ifdef ipv6}
+  if family = AF_INET6 then result := 128 else
+  {$endif}
+  if family = AF_INET then result := 32
+  else result := 0;
+end;
+
+function getbinipbitlength(const ip:tbinip):integer;
+begin
+  result := getfamilybitlength(ip.family);
+end;
+
+function getipstrbitlength(const ip:thostname):integer;
+var
+  biniptemp:tbinip;
+begin
+  ipstrtobin(ip,biniptemp);
+  result := getbinipbitlength(biniptemp);
+end;
+
 end.