base/applications/network/finger/finger.c

   1 /*
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * 8/2/97 - Ted Felix <tfelix@fred.net>
  37  *          Ported to Win32 from 4.4BSD-LITE2 at wcarchive.
  38  *          NT Workstation already has finger, and it runs fine under
  39  *          Win95.  Thought I'd do this anyways since not everyone has
  40  *          access to NT.
  41  *          Had to remove local handling.        Otherwise, same as whois.
  42  */
  43
  44 /*
  45  * Finger prints out information about users.  It is not portable since
  46  * certain fields (e.g. the full user name, office, and phone numbers) are
  47  * extracted from the gecos field of the passwd file which other UNIXes
  48  * may not have or may use for other things.
  49  *
  50  * There are currently two output formats; the short format is one line
  51  * per user and displays login name, tty, login time, real name, idle time,
  52  * and office location/phone number.  The long format gives the same
  53  * information (in a more legible format) as well as home directory, shell,
  54  * mail info, and .plan/.project files.
  55  */
  56
  57 #include "precomp.h"
  58
  59 char *__progname;
  60
  61 time_t now;
  62 int lflag, mflag, pplan, sflag;
  63
  64 static void userlist(int, char **);
  65 void usage();
  66
  67 int
  68 main(int argc, char **argv)
  69 {
  70         int ch;
  71
  72         while ((ch = getopt(argc, argv, "lmps")) != EOF)
  73                 switch(ch) {
  74                 case 'l':
  75                         lflag = 1;              /* long format */
  76                         break;
  77                 case 'm':
  78                         mflag = 1;              /* force exact match of names */
  79                         break;
  80                 case 'p':
  81                         pplan = 1;              /* don't show .plan/.project */
  82                         break;
  83                 case 's':
  84                         sflag = 1;              /* short format */
  85                         break;
  86                 case '?':
  87                 default:
  88                         (void)fprintf(stderr,
  89                             "usage: finger [-lmps] login [...]\n");
  90                         exit(1);
  91                 }
  92         argc -= optind;
  93         argv += optind;
  94
  95         (void)time(&now);
  96         if (!*argv) {
  97                 usage();
  98         } else {
  99                 userlist(argc, argv);
 100                 /*
 101                  * Assign explicit "large" format if names given and -s not
 102                  * explicitly stated.  Force the -l AFTER we get names so any
 103                  * remote finger attempts specified won't be mishandled.
 104                  */
 105                 if (!sflag)
 106                         lflag = 1;      /* if -s not explicit, force -l */
 107         }
 108         return 0;
 109 }
 110
 111
 112 static void
 113 userlist(int argc, char **argv)
 114 {
 115         int *used = NULL;
 116         char **ap, **nargv, **np, **p;
 117         WORD wVersionRequested;
 118         WSADATA wsaData;
 119         int iErr;
 120
 121
 122         if ((nargv = (char**) malloc((argc+1) * sizeof(char *))) == NULL ||
 123             (used = (int*) calloc(argc, sizeof(int))) == NULL)
 124                 err(1, NULL);
 125
 126         /* Pull out all network requests into nargv. */
 127         for (ap = p = argv, np = nargv; *p; ++p)
 128                 if (index(*p, '@'))
 129                         *np++ = *p;
 130                 else
 131                         *ap++ = *p;
 132
 133         *np++ = NULL;
 134         *ap++ = NULL;
 135
 136         /* If there are local requests */
 137         if (*argv)
 138         {
 139                 fprintf(stderr, "Warning: Can't do local finger\n");
 140         }
 141
 142         /* Start winsock */
 143         wVersionRequested = MAKEWORD( 1, 1 );
 144         iErr = WSAStartup( wVersionRequested, &wsaData );
 145         if ( iErr != 0 )
 146         {
 147                 /* Tell the user that we couldn't find a usable */
 148                 /* WinSock DLL.                                  */
 149                 fprintf(stderr, "WSAStartup failed\n");
 150                 return;
 151         }
 152
 153         /* Handle network requests. */
 154         for (p = nargv; *p;)
 155                 netfinger(*p++);
 156
 157         /* Bring down winsock */
 158         WSACleanup();
 159         free(nargv);
 160         free(used);
 161         exit(0);
 162 }
 163
 164 void usage()
 165 {
 166         (void)fprintf(stderr,
 167                       "usage: finger [-lmps] login [...]\n");
 168         exit(1);
 169 }
 170