2 Copyright (C) 1992-1997, 1999-2002 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18 /* Created by hacking who.c by Kaveh Ghazi ghazi@caip.rutgers.edu */
25 #include <sys/types.h>
32 /* The official name of this program (e.g., no `g' prefix). */
33 #define PROGRAM_NAME "pinky"
35 #define AUTHORS N_ ("Joseph Arceneaux, David MacKenzie, and Kaveh Ghazi")
37 #ifndef MAXHOSTNAMELEN
38 # define MAXHOSTNAMELEN 64
48 /* The name this program was run with. */
49 const char *program_name;
51 /* If nonzero, display the hours:minutes since each user has touched
52 the keyboard, or blank if within the last minute, or days followed
53 by a 'd' if not within the last day. */
54 static int include_idle = 1;
56 /* If nonzero, display a line at the top describing each field. */
57 static int include_heading = 1;
59 /* if nonzero, display the user's full name from pw_gecos. */
60 static int include_fullname = 1;
62 /* if nonzero, display the user's ~/.project file when doing long format. */
63 static int include_project = 1;
65 /* if nonzero, display the user's ~/.plan file when doing long format. */
66 static int include_plan = 1;
68 /* if nonzero, display the user's home directory and shell
69 when doing long format. */
70 static int include_home_and_shell = 1;
72 /* if nonzero, use the "short" output format. */
73 static int do_short_format = 1;
75 /* if nonzero, display the ut_host field. */
77 static int include_where = 1;
80 static struct option const longopts[] =
82 {GETOPT_HELP_OPTION_DECL},
83 {GETOPT_VERSION_OPTION_DECL},
87 /* Count and return the number of ampersands in STR. */
90 count_ampersands (const char *str)
101 /* Create a string (via xmalloc) which contains a full name by substituting
102 for each ampersand in GECOS_NAME the USER_NAME string with its first
103 character capitalized. The caller must ensure that GECOS_NAME contains
104 no `,'s. The caller also is responsible for free'ing the return value of
108 create_fullname (const char *gecos_name, const char *user_name)
110 const int result_len = strlen (gecos_name)
111 + count_ampersands (gecos_name) * (strlen (user_name) - 1) + 1;
112 char *const result = xmalloc (result_len);
117 if (*gecos_name == '&')
119 const char *uname = user_name;
120 if (ISLOWER (*uname))
121 *r++ = TOUPPER (*uname++);
137 /* Return a string representing the time between WHEN and the time
138 that this function is first run. */
141 idle_string (time_t when)
143 static time_t now = 0;
144 static char idle_hhmm[10];
150 seconds_idle = now - when;
151 if (seconds_idle < 60) /* One minute. */
153 if (seconds_idle < (24 * 60 * 60)) /* One day. */
155 sprintf (idle_hhmm, "%02d:%02d",
156 (int) (seconds_idle / (60 * 60)),
157 (int) ((seconds_idle % (60 * 60)) / 60));
158 return (const char *) idle_hhmm;
160 sprintf (idle_hhmm, "%dd", (int) (seconds_idle / (24 * 60 * 60)));
161 return (const char *) idle_hhmm;
164 /* Display a line of information about UTMP_ENT. */
167 print_entry (const STRUCT_UTMP *utmp_ent)
173 #define DEV_DIR_WITH_TRAILING_SLASH "/dev/"
174 #define DEV_DIR_LEN (sizeof (DEV_DIR_WITH_TRAILING_SLASH) - 1)
176 char line[sizeof (utmp_ent->ut_line) + DEV_DIR_LEN + 1];
179 /* Copy ut_line into LINE, prepending `/dev/' if ut_line is not
180 already an absolute pathname. Some system may put the full,
181 absolute pathname in ut_line. */
182 if (utmp_ent->ut_line[0] == '/')
184 strncpy (line, utmp_ent->ut_line, sizeof (utmp_ent->ut_line));
185 line[sizeof (utmp_ent->ut_line)] = '\0';
189 strcpy (line, DEV_DIR_WITH_TRAILING_SLASH);
190 strncpy (line + DEV_DIR_LEN, utmp_ent->ut_line, sizeof (utmp_ent->ut_line));
191 line[DEV_DIR_LEN + sizeof (utmp_ent->ut_line)] = '\0';
194 if (stat (line, &stats) == 0)
196 mesg = (stats.st_mode & S_IWGRP) ? ' ' : '*';
197 last_change = stats.st_atime;
205 printf ("%-8.*s", (int) sizeof (UT_USER (utmp_ent)), UT_USER (utmp_ent));
207 if (include_fullname)
210 char name[sizeof (UT_USER (utmp_ent)) + 1];
212 strncpy (name, UT_USER (utmp_ent), sizeof (UT_USER (utmp_ent)));
213 name[sizeof (UT_USER (utmp_ent))] = '\0';
214 pw = getpwnam (name);
216 printf (" %19s", " ???");
219 char *const comma = strchr (pw->pw_gecos, ',');
225 result = create_fullname (pw->pw_gecos, pw->pw_name);
226 printf (" %-19.19s", result);
232 mesg, (int) sizeof (utmp_ent->ut_line), utmp_ent->ut_line);
237 printf (" %-6s", idle_string (last_change));
239 printf (" %-6s", "???");
242 /* Don't take the address of UT_TIME_MEMBER directly.
243 Ulrich Drepper wrote:
244 ``... GNU libc (and perhaps other libcs as well) have extended
245 utmp file formats which do not use a simple time_t ut_time field.
246 In glibc, ut_time is a macro which selects for backward compatibility
247 the tv_sec member of a struct timeval value.'' */
248 tm = UT_TIME_MEMBER (utmp_ent);
249 printf (" %-12.12s", ctime (&tm) + 4);
252 if (include_where && utmp_ent->ut_host[0])
254 extern char *canon_host ();
255 char ut_host[sizeof (utmp_ent->ut_host) + 1];
256 char *host = 0, *display = 0;
258 /* Copy the host name into UT_HOST, and ensure it's nul terminated. */
259 strncpy (ut_host, utmp_ent->ut_host, (int) sizeof (utmp_ent->ut_host));
260 ut_host[sizeof (utmp_ent->ut_host)] = '\0';
262 /* Look for an X display. */
263 display = strrchr (ut_host, ':');
268 /* See if we can canonicalize it. */
269 host = canon_host (ut_host);
274 printf (" %s:%s", host, display);
276 printf (" %s", host);
283 /* Display a verbose line of information about UTMP_ENT. */
286 print_long_entry (const char name[])
290 pw = getpwnam (name);
292 printf (_("Login name: "));
293 printf ("%-28s", name);
295 printf (_("In real life: "));
298 printf (" %s", _("???\n"));
303 char *const comma = strchr (pw->pw_gecos, ',');
309 result = create_fullname (pw->pw_gecos, pw->pw_name);
310 printf (" %s", result);
316 if (include_home_and_shell)
318 printf (_("Directory: "));
319 printf ("%-29s", pw->pw_dir);
320 printf (_("Shell: "));
321 printf (" %s", pw->pw_shell);
329 const char *const baseproject = "/.project";
330 char *const project =
331 xmalloc (strlen (pw->pw_dir) + strlen (baseproject) + 1);
333 strcpy (project, pw->pw_dir);
334 strcat (project, baseproject);
336 stream = fopen (project, "r");
341 printf (_("Project: "));
343 while ((bytes = fread (buf, 1, sizeof (buf), stream)) > 0)
344 fwrite (buf, 1, bytes, stdout);
355 const char *const baseplan = "/.plan";
357 xmalloc (strlen (pw->pw_dir) + strlen (baseplan) + 1);
359 strcpy (plan, pw->pw_dir);
360 strcat (plan, baseplan);
362 stream = fopen (plan, "r");
367 printf (_("Plan:\n"));
369 while ((bytes = fread (buf, 1, sizeof (buf), stream)) > 0)
370 fwrite (buf, 1, bytes, stdout);
380 /* Print the username of each valid entry and the number of valid entries
381 in UTMP_BUF, which should have N elements. */
386 printf ("%-8s", _("Login"));
387 if (include_fullname)
388 printf (" %-19s", _(" Name"));
389 printf (" %-9s", _("TTY"));
391 printf (" %-6s", _("Idle"));
392 printf (" %-12s", _("When"));
395 printf (" %s", _("Where"));
400 /* Display UTMP_BUF, which should have N entries. */
403 scan_entries (int n, const STRUCT_UTMP *utmp_buf,
404 const int argc_names, char *const argv_names[])
411 if (UT_USER (utmp_buf)[0]
413 && utmp_buf->ut_type == USER_PROCESS
421 for (i = 0; i < argc_names; i++)
422 if (strncmp (UT_USER (utmp_buf), argv_names[i],
423 sizeof (UT_USER (utmp_buf))) == 0)
425 print_entry (utmp_buf);
430 print_entry (utmp_buf);
436 /* Display a list of who is on the system, according to utmp file FILENAME. */
439 short_pinky (const char *filename,
440 const int argc_names, char *const argv_names[])
443 STRUCT_UTMP *utmp_buf;
444 int fail = read_utmp (filename, &n_users, &utmp_buf);
447 error (EXIT_FAILURE, errno, "%s", filename);
449 scan_entries (n_users, utmp_buf, argc_names, argv_names);
453 long_pinky (const int argc_names, char *const argv_names[])
457 for (i = 0; i < argc_names; i++)
458 print_long_entry (argv_names[i]);
465 fprintf (stderr, _("Try `%s --help' for more information.\n"),
469 printf (_("Usage: %s [OPTION]... [USER]...\n"), program_name);
472 -l produce long format output for the specified USERs\n\
473 -b omit the user's home directory and shell in long format\n\
474 -h omit the user's project file in long format\n\
475 -p omit the user's plan file in long format\n\
476 -s do short format output, this is the default\n\
479 -f omit the line of column headings in short format\n\
480 -w omit the user's full name in short format\n\
481 -i omit the user's full name and remote host in short format\n\
482 -q omit the user's full name, remote host and idle time\n\
485 fputs (HELP_OPTION_DESCRIPTION, stdout);
486 fputs (VERSION_OPTION_DESCRIPTION, stdout);
489 A lightweight `finger' program; print user information.\n\
490 The utmp file will be %s.\n\
492 printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
498 main (int argc, char **argv)
503 program_name = argv[0];
504 setlocale (LC_ALL, "");
505 bindtextdomain (PACKAGE, LOCALEDIR);
506 textdomain (PACKAGE);
508 atexit (close_stdout);
510 while ((optc = getopt_long (argc, argv, "sfwiqbhlp", longopts, &longind))
531 include_fullname = 0;
535 include_fullname = 0;
542 include_fullname = 0;
558 include_home_and_shell = 0;
561 case_GETOPT_HELP_CHAR;
563 case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
566 usage (EXIT_FAILURE);
570 n_users = argc - optind;
572 if (do_short_format == 0 && n_users == 0)
574 error (0, 0, _("no username specified; at least one must be\
575 specified when using -l"));
576 usage (EXIT_FAILURE);
580 short_pinky (UTMP_FILE, n_users, argv + optind);
582 long_pinky (n_users, argv + optind);