2 Copyright (C) 1992-1997, 1999-2006, 2008 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 3 of the License, or
7 (at your option) any later version.
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, see <http://www.gnu.org/licenses/>. */
17 /* Created by hacking who.c by Kaveh Ghazi ghazi@caip.rutgers.edu */
24 #include <sys/types.h>
27 #include "canon-host.h"
29 #include "hard-locale.h"
33 /* The official name of this program (e.g., no `g' prefix). */
34 #define PROGRAM_NAME "pinky"
37 proper_name ("Joseph Arceneaux"), \
38 proper_name ("David MacKenzie"), \
39 proper_name ("Kaveh Ghazi")
41 #ifndef MAXHOSTNAMELEN
42 # define MAXHOSTNAMELEN 64
47 /* If true, display the hours:minutes since each user has touched
48 the keyboard, or blank if within the last minute, or days followed
49 by a 'd' if not within the last day. */
50 static bool include_idle = true;
52 /* If true, display a line at the top describing each field. */
53 static bool include_heading = true;
55 /* if true, display the user's full name from pw_gecos. */
56 static bool include_fullname = true;
58 /* if true, display the user's ~/.project file when doing long format. */
59 static bool include_project = true;
61 /* if true, display the user's ~/.plan file when doing long format. */
62 static bool include_plan = true;
64 /* if true, display the user's home directory and shell
65 when doing long format. */
66 static bool include_home_and_shell = true;
68 /* if true, use the "short" output format. */
69 static bool do_short_format = true;
71 /* if true, display the ut_host field. */
73 static bool include_where = true;
76 /* The strftime format to use for login times, and its expected
78 static char const *time_format;
79 static int time_format_width;
81 static const struct option const longopts[] =
83 {GETOPT_HELP_OPTION_DECL},
84 {GETOPT_VERSION_OPTION_DECL},
88 /* Count and return the number of ampersands in STR. */
91 count_ampersands (const char *str)
102 /* Create a string (via xmalloc) which contains a full name by substituting
103 for each ampersand in GECOS_NAME the USER_NAME string with its first
104 character capitalized. The caller must ensure that GECOS_NAME contains
105 no `,'s. The caller also is responsible for free'ing the return value of
109 create_fullname (const char *gecos_name, const char *user_name)
111 size_t rsize = strlen (gecos_name) + 1;
114 size_t ampersands = count_ampersands (gecos_name);
118 size_t ulen = strlen (user_name);
119 size_t product = ampersands * ulen;
120 rsize += product - ampersands;
121 if (xalloc_oversized (ulen, ampersands) || rsize < product)
125 r = result = xmalloc (rsize);
129 if (*gecos_name == '&')
131 const char *uname = user_name;
132 if (islower (to_uchar (*uname)))
133 *r++ = toupper (to_uchar (*uname++));
149 /* Return a string representing the time between WHEN and the time
150 that this function is first run. */
153 idle_string (time_t when)
155 static time_t now = 0;
156 static char buf[INT_STRLEN_BOUND (long int) + 2];
162 seconds_idle = now - when;
163 if (seconds_idle < 60) /* One minute. */
165 if (seconds_idle < (24 * 60 * 60)) /* One day. */
167 int hours = seconds_idle / (60 * 60);
168 int minutes = (seconds_idle % (60 * 60)) / 60;
169 sprintf (buf, "%02d:%02d", hours, minutes);
173 unsigned long int days = seconds_idle / (24 * 60 * 60);
174 sprintf (buf, "%lud", days);
179 /* Return a time string. */
181 time_string (const STRUCT_UTMP *utmp_ent)
183 static char buf[INT_STRLEN_BOUND (intmax_t) + sizeof "-%m-%d %H:%M"];
185 /* Don't take the address of UT_TIME_MEMBER directly.
186 Ulrich Drepper wrote:
187 ``... GNU libc (and perhaps other libcs as well) have extended
188 utmp file formats which do not use a simple time_t ut_time field.
189 In glibc, ut_time is a macro which selects for backward compatibility
190 the tv_sec member of a struct timeval value.'' */
191 time_t t = UT_TIME_MEMBER (utmp_ent);
192 struct tm *tmp = localtime (&t);
196 strftime (buf, sizeof buf, time_format, tmp);
200 return TYPE_SIGNED (time_t) ? imaxtostr (t, buf) : umaxtostr (t, buf);
203 /* Display a line of information about UTMP_ENT. */
206 print_entry (const STRUCT_UTMP *utmp_ent)
212 #define DEV_DIR_WITH_TRAILING_SLASH "/dev/"
213 #define DEV_DIR_LEN (sizeof (DEV_DIR_WITH_TRAILING_SLASH) - 1)
215 char line[sizeof (utmp_ent->ut_line) + DEV_DIR_LEN + 1];
217 /* Copy ut_line into LINE, prepending `/dev/' if ut_line is not
218 already an absolute file name. Some system may put the full,
219 absolute file name in ut_line. */
220 if (utmp_ent->ut_line[0] == '/')
222 strncpy (line, utmp_ent->ut_line, sizeof (utmp_ent->ut_line));
223 line[sizeof (utmp_ent->ut_line)] = '\0';
227 strcpy (line, DEV_DIR_WITH_TRAILING_SLASH);
228 strncpy (line + DEV_DIR_LEN, utmp_ent->ut_line, sizeof (utmp_ent->ut_line));
229 line[DEV_DIR_LEN + sizeof (utmp_ent->ut_line)] = '\0';
232 if (stat (line, &stats) == 0)
234 mesg = (stats.st_mode & S_IWGRP) ? ' ' : '*';
235 last_change = stats.st_atime;
243 printf ("%-8.*s", UT_USER_SIZE, UT_USER (utmp_ent));
245 if (include_fullname)
248 char name[UT_USER_SIZE + 1];
250 strncpy (name, UT_USER (utmp_ent), UT_USER_SIZE);
251 name[UT_USER_SIZE] = '\0';
252 pw = getpwnam (name);
254 printf (" %19s", " ???");
257 char *const comma = strchr (pw->pw_gecos, ',');
263 result = create_fullname (pw->pw_gecos, pw->pw_name);
264 printf (" %-19.19s", result);
270 mesg, (int) sizeof (utmp_ent->ut_line), utmp_ent->ut_line);
275 printf (" %-6s", idle_string (last_change));
277 printf (" %-6s", "???");
280 printf (" %s", time_string (utmp_ent));
283 if (include_where && utmp_ent->ut_host[0])
285 char ut_host[sizeof (utmp_ent->ut_host) + 1];
287 char *display = NULL;
289 /* Copy the host name into UT_HOST, and ensure it's nul terminated. */
290 strncpy (ut_host, utmp_ent->ut_host, (int) sizeof (utmp_ent->ut_host));
291 ut_host[sizeof (utmp_ent->ut_host)] = '\0';
293 /* Look for an X display. */
294 display = strchr (ut_host, ':');
299 /* See if we can canonicalize it. */
300 host = canon_host (ut_host);
305 printf (" %s:%s", host, display);
307 printf (" %s", host);
317 /* Display a verbose line of information about UTMP_ENT. */
320 print_long_entry (const char name[])
324 pw = getpwnam (name);
326 printf (_("Login name: "));
327 printf ("%-28s", name);
329 printf (_("In real life: "));
332 printf (" %s", _("???\n"));
337 char *const comma = strchr (pw->pw_gecos, ',');
343 result = create_fullname (pw->pw_gecos, pw->pw_name);
344 printf (" %s", result);
350 if (include_home_and_shell)
352 printf (_("Directory: "));
353 printf ("%-29s", pw->pw_dir);
354 printf (_("Shell: "));
355 printf (" %s", pw->pw_shell);
363 const char *const baseproject = "/.project";
364 char *const project =
365 xmalloc (strlen (pw->pw_dir) + strlen (baseproject) + 1);
367 strcpy (project, pw->pw_dir);
368 strcat (project, baseproject);
370 stream = fopen (project, "r");
375 printf (_("Project: "));
377 while ((bytes = fread (buf, 1, sizeof (buf), stream)) > 0)
378 fwrite (buf, 1, bytes, stdout);
389 const char *const baseplan = "/.plan";
391 xmalloc (strlen (pw->pw_dir) + strlen (baseplan) + 1);
393 strcpy (plan, pw->pw_dir);
394 strcat (plan, baseplan);
396 stream = fopen (plan, "r");
401 printf (_("Plan:\n"));
403 while ((bytes = fread (buf, 1, sizeof (buf), stream)) > 0)
404 fwrite (buf, 1, bytes, stdout);
414 /* Print the username of each valid entry and the number of valid entries
415 in UTMP_BUF, which should have N elements. */
420 printf ("%-8s", _("Login"));
421 if (include_fullname)
422 printf (" %-19s", _("Name"));
423 printf (" %-9s", _(" TTY"));
425 printf (" %-6s", _("Idle"));
426 printf (" %-*s", time_format_width, _("When"));
429 printf (" %s", _("Where"));
434 /* Display UTMP_BUF, which should have N entries. */
437 scan_entries (size_t n, const STRUCT_UTMP *utmp_buf,
438 const int argc_names, char *const argv_names[])
440 if (hard_locale (LC_TIME))
442 time_format = "%Y-%m-%d %H:%M";
443 time_format_width = 4 + 1 + 2 + 1 + 2 + 1 + 2 + 1 + 2;
447 time_format = "%b %e %H:%M";
448 time_format_width = 3 + 1 + 2 + 1 + 2 + 1 + 2;
456 if (IS_USER_PROCESS (utmp_buf))
462 for (i = 0; i < argc_names; i++)
463 if (strncmp (UT_USER (utmp_buf), argv_names[i], UT_USER_SIZE)
466 print_entry (utmp_buf);
471 print_entry (utmp_buf);
477 /* Display a list of who is on the system, according to utmp file FILENAME. */
480 short_pinky (const char *filename,
481 const int argc_names, char *const argv_names[])
484 STRUCT_UTMP *utmp_buf;
486 if (read_utmp (filename, &n_users, &utmp_buf, 0) != 0)
487 error (EXIT_FAILURE, errno, "%s", filename);
489 scan_entries (n_users, utmp_buf, argc_names, argv_names);
493 long_pinky (const int argc_names, char *const argv_names[])
497 for (i = 0; i < argc_names; i++)
498 print_long_entry (argv_names[i]);
504 if (status != EXIT_SUCCESS)
505 fprintf (stderr, _("Try `%s --help' for more information.\n"),
509 printf (_("Usage: %s [OPTION]... [USER]...\n"), program_name);
512 -l produce long format output for the specified USERs\n\
513 -b omit the user's home directory and shell in long format\n\
514 -h omit the user's project file in long format\n\
515 -p omit the user's plan file in long format\n\
516 -s do short format output, this is the default\n\
519 -f omit the line of column headings in short format\n\
520 -w omit the user's full name in short format\n\
521 -i omit the user's full name and remote host in short format\n\
522 -q omit the user's full name, remote host and idle time\n\
525 fputs (HELP_OPTION_DESCRIPTION, stdout);
526 fputs (VERSION_OPTION_DESCRIPTION, stdout);
529 A lightweight `finger' program; print user information.\n\
530 The utmp file will be %s.\n\
532 emit_bug_reporting_address ();
538 main (int argc, char **argv)
543 initialize_main (&argc, &argv);
544 set_program_name (argv[0]);
545 setlocale (LC_ALL, "");
546 bindtextdomain (PACKAGE, LOCALEDIR);
547 textdomain (PACKAGE);
549 atexit (close_stdout);
551 while ((optc = getopt_long (argc, argv, "sfwiqbhlp", longopts, NULL)) != -1)
556 do_short_format = true;
560 do_short_format = false;
564 include_heading = false;
568 include_fullname = false;
572 include_fullname = false;
574 include_where = false;
579 include_fullname = false;
581 include_where = false;
583 include_idle = false;
587 include_project = false;
591 include_plan = false;
595 include_home_and_shell = false;
598 case_GETOPT_HELP_CHAR;
600 case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
603 usage (EXIT_FAILURE);
607 n_users = argc - optind;
609 if (!do_short_format && n_users == 0)
611 error (0, 0, _("no username specified; at least one must be\
612 specified when using -l"));
613 usage (EXIT_FAILURE);
617 short_pinky (UTMP_FILE, n_users, argv + optind);
619 long_pinky (n_users, argv + optind);