unit HttpSock;
{
 CrtSocket for Delphi 32
 Copyright (C) 1999-2001 Paul Toth <tothpaul@free.fr>
 <a href="http://tothpaul.free.fr
This" title="http://tothpaul.free.fr
This">http://tothpaul.free.fr
This</a> program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
}
interface
function URLEncode(s:string):string;
function URLDecode(s:string):string;
function HttpGet(server,url:string; var header:string):string;
function HttpPost(server,url,data:string; var header:string):string;
implementation
uses
 crtsock,sysutils;
function URLEncode(s:string):string; // <a href="http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc1738.html
" title="http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc1738.html
">http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc1738.html
</a> var
 i:integer;
 c:char;
 begin
 result:='';
 for i:=1 to length(s) do begin
  c:=s[i];
  case c of
  // non-ASCII
  #$00..#$1F,#$7F,#$80..#$FF,
  // unsafe
  {' ',}'<','>','"','#','%','}','|','\','^','~', '[', ']', '`',
  // reserved
  ';','/','?',':','@','=','&',
  '$','-','_','.','+','!','*','''','(',')':
  result:=result+'%'+IntToHex(ord(c),2);
  ' ' :result:=result+'+';
  else result:=result+c;
  end;
 end;
 end;
function URLDecode(s:string):string;
 var
 i:integer;
 begin
 result:='';
 i:=1;
 while i<=length(s) do begin
  case s[i] of
  '+':result:=result+' ';
  '%':begin
  s[i]:='$';
  result:=result+chr(StrToInt(copy(s,i,3)));
  inc(i,2);
  end;
  else result:=result+s[i];
  end;
  inc(i);
 end;
 end;

function HttpGet(server,url:string; var header:string):string;
 var
 handle:integer;
 sin,sout:textfile;
 s:string;
 begin
 handle:=callserver(server,80);
 if handle<=0 then begin
  result:='';
  exit;
 end;
 assigncrtsock(handle,sin,sout);
 writeln(sout,'GET ',url,' HTTP/1.0');
 writeln(sout,'Accept: */*');
 writeln(sout,'Accept-Language: fr');
 writeln(sout,'User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; FREE)');
// writeln(sout,'User-Agent: MySoft/1.0 (Delphi)');
 writeln(sout,'Connection: Keep-Alive');
 if header<>'' then writeln(sout,header);
 writeln(sout);
 header:='';
 result:='';
 readln(sin,s);
 while s<>'' do begin
  header:=header+s;
  readln(sin,s);
 end;
 while not eof(sin) do begin
  readln(sin,s);
  result:=result+s;
 end;
 disconnect(handle);
 end;
function HttpPost(server,url,data:string; var header:string):string;
 var
 handle:integer;
 sin,sout:textfile;
 s:string;
 begin
 handle:=callserver(server,80);
 if handle<=0 then begin
  result:='';
  exit;
 end;
 assigncrtsock(handle,sin,sout);
 writeln(sout,'POST ',url,' HTTP/1.0');
 writeln(sout,'Accept: */*');
 writeln(sout,'Accept-Language: fr');
 writeln(sout,'User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; FREE)');
// writeln(sout,'User-Agent: MySoft/1.0 (Delphi)');
 writeln(sout,'Content-length: ',Length(data));
 writeln(sout,'Connection: Keep-Alive');
 if header<>'' then writeln(sout,header);
 writeln(sout);
 write(sout,data);
 header:='';
 result:='';
 readln(sin,s);
 while s<>'' do begin
  header:=header+s;
  readln(sin,s);
 end;
 while not eof(sin) do begin
  readln(sin,s);
  result:=result+s;
 end;
 disconnect(handle);
 end;
end.