base/applications/network/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 static char NICHOST[] = "whois.internic.net";
  52 char *host = NULL;
  53 int optset = 0;
  54 static void usage();
  55 static void cleanup(int iExitCode);
  56
  57 void getwhoisserver(int argc, char **argv)
  58 {
  59         int i = 1;
  60
  61     while(i < argc)
  62         {
  63                 if (!strcmp(argv[i], "-h"))
  64                 {
  65                         if (i + 2 < argc)
  66                         {
  67                                 host = argv[i +1];
  68                                 optset = i + 1;
  69                         }
  70                         else
  71                         {
  72                                 optset = argc;
  73                         }
  74                         return;
  75                 }
  76                 i++;
  77         }
  78         host = NICHOST;
  79         optset = 1;
  80 }
  81
  82 int main(int argc, char **argv)
  83 {
  84         char ch;
  85         struct sockaddr_in sin;
  86         struct hostent *hp;
  87         struct servent *sp;
  88         SOCKET s;
  89
  90         WORD wVersionRequested;
  91         WSADATA wsaData;
  92         int err;
  93
  94         getwhoisserver(argc, argv);
  95         argc -= optset;
  96         argv += optset;
  97
  98     if (!host || !argc)
  99                 usage();
 100
 101         /* Start winsock */
 102         wVersionRequested = MAKEWORD( 1, 1 );
 103         err = WSAStartup( wVersionRequested, &wsaData );
 104         if ( err != 0 )
 105         {
 106                 /* Tell the user that we couldn't find a usable */
 107                 /* WinSock DLL.                                 */
 108                 perror("whois: WSAStartup failed");
 109                 cleanup(1);
 110         }
 111
 112         hp = gethostbyname(host);
 113         if (hp == NULL) {
 114                 (void)fprintf(stderr, "whois: %s: ", host);
 115                 cleanup(1);
 116         }
 117         host = hp->h_name;
 118
 119         s = socket(hp->h_addrtype, SOCK_STREAM, 0);
 120         if (s == INVALID_SOCKET) {
 121                 perror("whois: socket");
 122                 cleanup(1);
 123         }
 124
 125         memset(/*(caddr_t)*/&sin, 0, sizeof(sin));
 126         sin.sin_family = hp->h_addrtype;
 127         if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
 128                 perror("whois: bind");
 129                 cleanup(1);
 130         }
 131
 132         memcpy((char *)&sin.sin_addr, hp->h_addr, hp->h_length);
 133         sp = getservbyname("nicname", "tcp");
 134         if (sp == NULL) {
 135                 (void)fprintf(stderr, "whois: nicname/tcp: unknown service\n");
 136                 cleanup(1);
 137         }
 138
 139         sin.sin_port = sp->s_port;
 140
 141         /* have network connection; identify the host connected with */
 142         (void)printf("[%s]\n", hp->h_name);
 143
 144         if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
 145                 fprintf(stderr, "whois: connect error = %d\n", WSAGetLastError());
 146                 cleanup(1);
 147         }
 148
 149         /* WinSock doesn't allow using a socket as a file descriptor. */
 150         /* Have to use send() and recv().  whois will drop connection. */
 151
 152         /* For each request */
 153         while (argc-- > 1)
 154         {
 155                 /* Send the request */
 156                 send(s, *argv, strlen(*argv), 0);
 157                 send(s, " ", 1, 0);
 158                 argv++;
 159         }
 160         /* Send the last request */
 161         send(s, *argv, strlen(*argv), 0);
 162         send(s, "\r\n", 2, 0);
 163
 164         /* Receive anything and print it */
 165         while (recv(s, &ch, 1, 0) == 1)
 166                 putchar(ch);
 167
 168         cleanup(0);
 169         return 0;
 170 }
 171
 172 static void usage()
 173 {
 174         (void)fprintf(stderr, "usage: whois [-h hostname] name ...\n");
 175         cleanup(1);
 176 }
 177
 178 static void cleanup(int iExitCode)
 179 {
 180         WSACleanup();
 181         exit(iExitCode);
 182 }