workbench/network/common/C/resolve.c

   1 /* $Id$
   2  *
   3  * resolve.c --- resolve the given IP address or hostname
   4  *
   5  * Author: ppessi <Pekka.Pessi@hut.fi>
   6  *         Pavel Fedin <sonic_amiga@rambler.ru>
   7  *
   8  * Copyright © 1994 AmiTCP/IP Group, <AmiTCP-group@hut.fi>
   9  *                  Helsinki University of Technology, Finland.
  10  8 Copyright © 2005 Pavel Fedin
  11  *
  12  * Created      : Tue Jan 11 22:33:06 1994 ppessi
  13  * Last modified: Mon Oct 17 12:25:13 2005 sonic
  14  */
  15
  16 static const char version[] __attribute__((used)) = "$VER: resolve 4.0 (17.10.2005)\n"
  17 "Copyright © 1994 AmiTCP/IP Group, <amitcp-group@hut.fi>\n"
  18 "Helsinki University of Technology, Finland.\n"
  19 "Copyright © 2005 Pavel Fedin <sonic_amiga@rambler.ru";
  20
  21 #define USE_INLINE_STDARG
  22
  23 #include <aros/config.h>
  24
  25 #include <proto/socket.h>
  26 #include <proto/dos.h>
  27
  28 #include <proto/exec.h>
  29
  30 #include <dos/dos.h>
  31
  32 #include <netdb.h>
  33
  34 #include <string.h>
  35 #include <stdlib.h>
  36
  37 #include <sys/socket.h>
  38 #include <netinet/in.h>
  39
  40 #define SOCKETVERSION 2 /* minimum version to use */
  41 #define SOCKETNAME "bsdsocket.library"
  42
  43 #ifndef MAXLINELENGTH
  44 #define MAXLINELENGTH 1024
  45 #endif
  46
  47 int main(void)
  48 {
  49   int retval = 128;
  50   struct DosLibrary *DOSBase;
  51   struct Library *SocketBase;
  52
  53 #if ! (AROS_FLAVOUR & AROS_FLAVOUR_EMULATION)
  54   struct ExecBase *SysBase;
  55   SysBase = *(struct ExecBase**)4;
  56 #endif
  57
  58   DOSBase = (struct DosLibrary *)OpenLibrary("dos.library", 37L);
  59   SocketBase = OpenLibrary(SOCKETNAME, SOCKETVERSION);
  60
  61   if (DOSBase && SocketBase) {
  62     const char *template = "HOST/A";
  63     struct {
  64       STRPTR a_ipaddr;
  65     } args[1] = { { 0 } };
  66     struct RDArgs *rdargs = NULL;
  67
  68     if (rdargs = ReadArgs((UBYTE *)template, (IPTR *)args, NULL)) {
  69       long addr = inet_addr(args->a_ipaddr);
  70       struct hostent *hp;
  71       if (addr == INADDR_NONE)
  72         hp = gethostbyname(args->a_ipaddr);
  73       else
  74         hp = gethostbyaddr((caddr_t)&addr, sizeof(addr), AF_INET);
  75       if (hp) {
  76         if (addr == -1) {
  77           char **ip = hp->h_addr_list;
  78           struct in_addr *inaddr;
  79           Printf("ADDR %s", args->a_ipaddr);
  80           while (ip && *ip) {
  81             inaddr = (struct in_addr *)*ip++;
  82             Printf(" %s", Inet_NtoA(inaddr->s_addr));
  83           }
  84         } else {
  85           char **alias = hp->h_aliases;
  86           Printf("HOST %s %s", args->a_ipaddr, hp->h_name);
  87           while (alias && *alias) {
  88             Printf(" %s", *alias++);
  89           }
  90         }
  91         Printf("\n");
  92         retval = RETURN_OK;
  93       } else {
  94         Printf("resolve: unknown host %s\n", args->a_ipaddr);
  95         retval = 1;
  96       }
  97       FreeArgs(rdargs);
  98     }
  99
 100     else {
 101         Printf("usage: resolve host\n");
 102         retval = 1;
 103     }
 104   }
 105
 106   if (SocketBase) {
 107     CloseLibrary(SocketBase);
 108   } else {
 109     if (DOSBase)
 110       Printf("resolve: cannot open bsdsocket.library version 2\n");
 111   }
 112
 113   if (DOSBase)
 114     CloseLibrary((struct Library *)DOSBase);
 115
 116   return retval;
 117 }