reactos/apps/utils/net/whois/whois.c

   1 /*
   2  * Copyright (c) 1980, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * 8/1/97 - Ted Felix <tfelix@fred.net>
  34  *          Ported to Win32 from 4.4-BSDLITE2 from wcarchive.
  35  *          Added WSAStartup()/WSACleanup() and switched from the
  36  *          more convenient fdopen()/fprintf() to send()/recv().
  37  */
  38
  39 #include <sys/types.h>
  40 #include <winsock2.h>
  41 /* #include <sys/socket.h> */
  42 /* #include <netinet/in.h> */
  43 /* #include <netdb.h> */
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46
  47 /* #include <various.h> */
  48 #include <getopt.h>
  49 #include <io.h>
  50
  51 #define NICHOST "whois.internic.net"
  52
  53 void usage();
  54 void leave(int iExitCode);
  55
  56 int main(int argc, char **argv)
  57 {
  58         extern char *optarg;
  59         extern int optind;
  60         char ch;
  61         struct sockaddr_in sin;
  62         struct hostent *hp;
  63         struct servent *sp;
  64         int s;
  65         char *host;
  66         WORD wVersionRequested;
  67         WSADATA wsaData;
  68         int err;
  69
  70         host = NICHOST;
  71         while ((ch = (char)getopt(argc, argv, "h:")) != EOF)
  72                 switch((char)ch) {
  73                 case 'h':
  74                         host = optarg;
  75                         break;
  76                 case '?':
  77                 default:
  78                         usage();
  79                 }
  80         argc -= optind;
  81         argv += optind;
  82
  83         if (!argc)
  84                 usage();
  85
  86         /* Start winsock */
  87         wVersionRequested = MAKEWORD( 1, 1 );
  88         err = WSAStartup( wVersionRequested, &wsaData );
  89         if ( err != 0 )
  90         {
  91                 /* Tell the user that we couldn't find a usable */
  92                 /* WinSock DLL.                                 */
  93                 perror("whois: WSAStartup failed");
  94                 leave(1);
  95         }
  96
  97         hp = gethostbyname(host);
  98         if (hp == NULL) {
  99                 (void)fprintf(stderr, "whois: %s: ", host);
 100                 leave(1);
 101         }
 102         host = hp->h_name;
 103
 104         s = socket(hp->h_addrtype, SOCK_STREAM, 0);
 105         if (s < 0) {
 106                 perror("whois: socket");
 107                 leave(1);
 108         }
 109
 110         memset(/*(caddr_t)*/&sin, 0, sizeof(sin));
 111         sin.sin_family = hp->h_addrtype;
 112         if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
 113                 perror("whois: bind");
 114                 leave(1);
 115         }
 116
 117         memcpy((char *)&sin.sin_addr, hp->h_addr, hp->h_length);
 118         sp = getservbyname("whois", "tcp");
 119         if (sp == NULL) {
 120                 (void)fprintf(stderr, "whois: whois/tcp: unknown service\n");
 121                 leave(1);
 122         }
 123
 124         sin.sin_port = sp->s_port;
 125
 126         /* have network connection; identify the host connected with */
 127         (void)printf("[%s]\n", hp->h_name);
 128
 129         if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
 130                 fprintf(stderr, "whois: connect error = %d\n", WSAGetLastError());
 131                 leave(1);
 132         }
 133
 134         /* WinSock doesn't allow using a socket as a file descriptor. */
 135         /* Have to use send() and recv().  whois will drop connection. */
 136
 137         /* For each request */
 138         while (argc-- > 1)
 139         {
 140                 /* Send the request */
 141                 send(s, *argv, strlen(*argv), 0);
 142                 send(s, " ", 1, 0);
 143                 argv++;
 144         }
 145         /* Send the last request */
 146         send(s, *argv, strlen(*argv), 0);
 147         send(s, "\r\n", 2, 0);
 148
 149         /* Receive anything and print it */
 150         while (recv(s, &ch, 1, 0) == 1)
 151                 putchar(ch);
 152
 153         leave(0);
 154         return 0;
 155 }
 156
 157 void usage()
 158 {
 159         (void)fprintf(stderr, "usage: whois [-h hostname] name ...\n");
 160         leave(1);
 161 }
 162
 163 void leave(int iExitCode)
 164 {
 165         WSACleanup();
 166         exit(iExitCode);
 167 }