reactos/apps/utils/net/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 <winsock2.h>
  58 #include "err.h"
  59 #include <errno.h>
  60 #include <fcntl.h>
  61 #include <stdio.h>
  62 #include <stdlib.h>
  63 #include <string.h>
  64 #include <time.h>
  65 #include "unistd.h"
  66
  67 #include "various.h"
  68 #include "getopt.h"
  69
  70 char *__progname;
  71
  72 time_t now;
  73 int lflag, mflag, pplan, sflag;
  74
  75 static void userlist(int, char **);
  76 void usage();
  77 void netfinger(char *);
  78
  79 int
  80 main(int argc, char **argv)
  81 {
  82         int ch;
  83
  84         while ((ch = getopt(argc, argv, "lmps")) != EOF)
  85                 switch(ch) {
  86                 case 'l':
  87                         lflag = 1;              /* long format */
  88                         break;
  89                 case 'm':
  90                         mflag = 1;              /* force exact match of names */
  91                         break;
  92                 case 'p':
  93                         pplan = 1;              /* don't show .plan/.project */
  94                         break;
  95                 case 's':
  96                         sflag = 1;              /* short format */
  97                         break;
  98                 case '?':
  99                 default:
 100                         (void)fprintf(stderr,
 101                             "usage: finger [-lmps] login [...]\n");
 102                         exit(1);
 103                 }
 104         argc -= optind;
 105         argv += optind;
 106
 107         (void)time(&now);
 108         if (!*argv) {
 109                 usage();
 110         } else {
 111                 userlist(argc, argv);
 112                 /*
 113                  * Assign explicit "large" format if names given and -s not
 114                  * explicitly stated.  Force the -l AFTER we get names so any
 115                  * remote finger attempts specified won't be mishandled.
 116                  */
 117                 if (!sflag)
 118                         lflag = 1;      /* if -s not explicit, force -l */
 119         }
 120         return 0;
 121 }
 122
 123
 124 static void
 125 userlist(int argc, char **argv)
 126 {
 127         int *used;
 128         char **ap, **nargv, **np, **p;
 129         WORD wVersionRequested;
 130         WSADATA wsaData;
 131         int iErr;
 132
 133
 134         if ((nargv = malloc((argc+1) * sizeof(char *))) == NULL ||
 135             (used = calloc(argc, sizeof(int))) == NULL)
 136                 err(1, NULL);
 137
 138         /* Pull out all network requests into nargv. */
 139         for (ap = p = argv, np = nargv; *p; ++p)
 140                 if (index(*p, '@'))
 141                         *np++ = *p;
 142                 else
 143                         *ap++ = *p;
 144
 145         *np++ = NULL;
 146         *ap++ = NULL;
 147
 148         /* If there are local requests */
 149         if (*argv)
 150         {
 151                 fprintf(stderr, "Warning: Can't do local finger\n");
 152         }
 153
 154         /* Start winsock */
 155         wVersionRequested = MAKEWORD( 1, 1 );
 156         iErr = WSAStartup( wVersionRequested, &wsaData );
 157         if ( iErr != 0 )
 158         {
 159                 /* Tell the user that we couldn't find a usable */
 160                 /* WinSock DLL.                                  */
 161                 fprintf(stderr, "WSAStartup failed\n");
 162                 return;
 163         }
 164
 165         /* Handle network requests. */
 166         for (p = nargv; *p;)
 167                 netfinger(*p++);
 168
 169         /* Bring down winsock */
 170         WSACleanup();
 171         exit(0);
 172 }
 173
 174 void usage()
 175 {
 176         (void)fprintf(stderr,
 177                       "usage: finger [-lmps] login [...]\n");
 178         exit(1);
 179 }
 180