2 Copyright (C) 1992-1997, 1999-2005 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
18 /* Created by hacking who.c by Kaveh Ghazi ghazi@caip.rutgers.edu */
25 #include <sys/types.h>
28 #include "canon-host.h"
30 #include "hard-locale.h"
34 /* The official name of this program (e.g., no `g' prefix). */
35 #define PROGRAM_NAME "pinky"
37 #define AUTHORS "Joseph Arceneaux", "David MacKenzie", "Kaveh Ghazi"
39 #ifndef MAXHOSTNAMELEN
40 # define MAXHOSTNAMELEN 64
49 /* The name this program was run with. */
50 const char *program_name;
52 /* If true, display the hours:minutes since each user has touched
53 the keyboard, or blank if within the last minute, or days followed
54 by a 'd' if not within the last day. */
55 static bool include_idle = true;
57 /* If true, display a line at the top describing each field. */
58 static bool include_heading = true;
60 /* if true, display the user's full name from pw_gecos. */
61 static bool include_fullname = true;
63 /* if true, display the user's ~/.project file when doing long format. */
64 static bool include_project = true;
66 /* if true, display the user's ~/.plan file when doing long format. */
67 static bool include_plan = true;
69 /* if true, display the user's home directory and shell
70 when doing long format. */
71 static bool include_home_and_shell = true;
73 /* if true, use the "short" output format. */
74 static bool do_short_format = true;
76 /* if true, display the ut_host field. */
78 static bool include_where = true;
81 /* The strftime format to use for login times, and its expected
83 static char const *time_format;
84 static int time_format_width;
86 static struct option const longopts[] =
88 {GETOPT_HELP_OPTION_DECL},
89 {GETOPT_VERSION_OPTION_DECL},
93 /* Count and return the number of ampersands in STR. */
96 count_ampersands (const char *str)
107 /* Create a string (via xmalloc) which contains a full name by substituting
108 for each ampersand in GECOS_NAME the USER_NAME string with its first
109 character capitalized. The caller must ensure that GECOS_NAME contains
110 no `,'s. The caller also is responsible for free'ing the return value of
114 create_fullname (const char *gecos_name, const char *user_name)
116 size_t rsize = strlen (gecos_name) + 1;
119 size_t ampersands = count_ampersands (gecos_name);
123 size_t ulen = strlen (user_name);
124 size_t product = ampersands * ulen;
125 rsize += product - ampersands;
126 if (xalloc_oversized (ulen, ampersands) || rsize < product)
130 r = result = xmalloc (rsize);
134 if (*gecos_name == '&')
136 const char *uname = user_name;
137 if (ISLOWER (*uname))
138 *r++ = TOUPPER (*uname++);
154 /* Return a string representing the time between WHEN and the time
155 that this function is first run. */
158 idle_string (time_t when)
160 static time_t now = 0;
161 static char buf[INT_STRLEN_BOUND (long int) + 2];
167 seconds_idle = now - when;
168 if (seconds_idle < 60) /* One minute. */
170 if (seconds_idle < (24 * 60 * 60)) /* One day. */
172 int hours = seconds_idle / (60 * 60);
173 int minutes = (seconds_idle % (60 * 60)) / 60;
174 sprintf (buf, "%02d:%02d", hours, minutes);
178 unsigned long int days = seconds_idle / (24 * 60 * 60);
179 sprintf (buf, "%lud", days);
184 /* Return a time string. */
186 time_string (const STRUCT_UTMP *utmp_ent)
188 static char buf[INT_STRLEN_BOUND (intmax_t) + sizeof "-%m-%d %H:%M"];
190 /* Don't take the address of UT_TIME_MEMBER directly.
191 Ulrich Drepper wrote:
192 ``... GNU libc (and perhaps other libcs as well) have extended
193 utmp file formats which do not use a simple time_t ut_time field.
194 In glibc, ut_time is a macro which selects for backward compatibility
195 the tv_sec member of a struct timeval value.'' */
196 time_t t = UT_TIME_MEMBER (utmp_ent);
197 struct tm *tmp = localtime (&t);
201 strftime (buf, sizeof buf, time_format, tmp);
205 return TYPE_SIGNED (time_t) ? imaxtostr (t, buf) : umaxtostr (t, buf);
208 /* Display a line of information about UTMP_ENT. */
211 print_entry (const STRUCT_UTMP *utmp_ent)
217 #define DEV_DIR_WITH_TRAILING_SLASH "/dev/"
218 #define DEV_DIR_LEN (sizeof (DEV_DIR_WITH_TRAILING_SLASH) - 1)
220 char line[sizeof (utmp_ent->ut_line) + DEV_DIR_LEN + 1];
222 /* Copy ut_line into LINE, prepending `/dev/' if ut_line is not
223 already an absolute file name. Some system may put the full,
224 absolute file name in ut_line. */
225 if (utmp_ent->ut_line[0] == '/')
227 strncpy (line, utmp_ent->ut_line, sizeof (utmp_ent->ut_line));
228 line[sizeof (utmp_ent->ut_line)] = '\0';
232 strcpy (line, DEV_DIR_WITH_TRAILING_SLASH);
233 strncpy (line + DEV_DIR_LEN, utmp_ent->ut_line, sizeof (utmp_ent->ut_line));
234 line[DEV_DIR_LEN + sizeof (utmp_ent->ut_line)] = '\0';
237 if (stat (line, &stats) == 0)
239 mesg = (stats.st_mode & S_IWGRP) ? ' ' : '*';
240 last_change = stats.st_atime;
248 printf ("%-8.*s", UT_USER_SIZE, UT_USER (utmp_ent));
250 if (include_fullname)
253 char name[UT_USER_SIZE + 1];
255 strncpy (name, UT_USER (utmp_ent), UT_USER_SIZE);
256 name[UT_USER_SIZE] = '\0';
257 pw = getpwnam (name);
259 printf (" %19s", " ???");
262 char *const comma = strchr (pw->pw_gecos, ',');
268 result = create_fullname (pw->pw_gecos, pw->pw_name);
269 printf (" %-19.19s", result);
275 mesg, (int) sizeof (utmp_ent->ut_line), utmp_ent->ut_line);
280 printf (" %-6s", idle_string (last_change));
282 printf (" %-6s", "???");
285 printf (" %s", time_string (utmp_ent));
288 if (include_where && utmp_ent->ut_host[0])
290 char ut_host[sizeof (utmp_ent->ut_host) + 1];
292 char *display = NULL;
294 /* Copy the host name into UT_HOST, and ensure it's nul terminated. */
295 strncpy (ut_host, utmp_ent->ut_host, (int) sizeof (utmp_ent->ut_host));
296 ut_host[sizeof (utmp_ent->ut_host)] = '\0';
298 /* Look for an X display. */
299 display = strchr (ut_host, ':');
304 /* See if we can canonicalize it. */
305 host = canon_host (ut_host);
310 printf (" %s:%s", host, display);
312 printf (" %s", host);
322 /* Display a verbose line of information about UTMP_ENT. */
325 print_long_entry (const char name[])
329 pw = getpwnam (name);
331 printf (_("Login name: "));
332 printf ("%-28s", name);
334 printf (_("In real life: "));
337 printf (" %s", _("???\n"));
342 char *const comma = strchr (pw->pw_gecos, ',');
348 result = create_fullname (pw->pw_gecos, pw->pw_name);
349 printf (" %s", result);
355 if (include_home_and_shell)
357 printf (_("Directory: "));
358 printf ("%-29s", pw->pw_dir);
359 printf (_("Shell: "));
360 printf (" %s", pw->pw_shell);
368 const char *const baseproject = "/.project";
369 char *const project =
370 xmalloc (strlen (pw->pw_dir) + strlen (baseproject) + 1);
372 strcpy (project, pw->pw_dir);
373 strcat (project, baseproject);
375 stream = fopen (project, "r");
380 printf (_("Project: "));
382 while ((bytes = fread (buf, 1, sizeof (buf), stream)) > 0)
383 fwrite (buf, 1, bytes, stdout);
394 const char *const baseplan = "/.plan";
396 xmalloc (strlen (pw->pw_dir) + strlen (baseplan) + 1);
398 strcpy (plan, pw->pw_dir);
399 strcat (plan, baseplan);
401 stream = fopen (plan, "r");
406 printf (_("Plan:\n"));
408 while ((bytes = fread (buf, 1, sizeof (buf), stream)) > 0)
409 fwrite (buf, 1, bytes, stdout);
419 /* Print the username of each valid entry and the number of valid entries
420 in UTMP_BUF, which should have N elements. */
425 printf ("%-8s", _("Login"));
426 if (include_fullname)
427 printf (" %-19s", _("Name"));
428 printf (" %-9s", _(" TTY"));
430 printf (" %-6s", _("Idle"));
431 printf (" %-*s", time_format_width, _("When"));
434 printf (" %s", _("Where"));
439 /* Display UTMP_BUF, which should have N entries. */
442 scan_entries (size_t n, const STRUCT_UTMP *utmp_buf,
443 const int argc_names, char *const argv_names[])
445 if (hard_locale (LC_TIME))
447 time_format = "%Y-%m-%d %H:%M";
448 time_format_width = 4 + 1 + 2 + 1 + 2 + 1 + 2 + 1 + 2;
452 time_format = "%b %e %H:%M";
453 time_format_width = 3 + 1 + 2 + 1 + 2 + 1 + 2;
461 if (IS_USER_PROCESS (utmp_buf))
467 for (i = 0; i < argc_names; i++)
468 if (strncmp (UT_USER (utmp_buf), argv_names[i], UT_USER_SIZE)
471 print_entry (utmp_buf);
476 print_entry (utmp_buf);
482 /* Display a list of who is on the system, according to utmp file FILENAME. */
485 short_pinky (const char *filename,
486 const int argc_names, char *const argv_names[])
489 STRUCT_UTMP *utmp_buf;
491 if (read_utmp (filename, &n_users, &utmp_buf, 0) != 0)
492 error (EXIT_FAILURE, errno, "%s", filename);
494 scan_entries (n_users, utmp_buf, argc_names, argv_names);
498 long_pinky (const int argc_names, char *const argv_names[])
502 for (i = 0; i < argc_names; i++)
503 print_long_entry (argv_names[i]);
509 if (status != EXIT_SUCCESS)
510 fprintf (stderr, _("Try `%s --help' for more information.\n"),
514 printf (_("Usage: %s [OPTION]... [USER]...\n"), program_name);
517 -l produce long format output for the specified USERs\n\
518 -b omit the user's home directory and shell in long format\n\
519 -h omit the user's project file in long format\n\
520 -p omit the user's plan file in long format\n\
521 -s do short format output, this is the default\n\
524 -f omit the line of column headings in short format\n\
525 -w omit the user's full name in short format\n\
526 -i omit the user's full name and remote host in short format\n\
527 -q omit the user's full name, remote host and idle time\n\
530 fputs (HELP_OPTION_DESCRIPTION, stdout);
531 fputs (VERSION_OPTION_DESCRIPTION, stdout);
534 A lightweight `finger' program; print user information.\n\
535 The utmp file will be %s.\n\
537 printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
543 main (int argc, char **argv)
548 initialize_main (&argc, &argv);
549 program_name = argv[0];
550 setlocale (LC_ALL, "");
551 bindtextdomain (PACKAGE, LOCALEDIR);
552 textdomain (PACKAGE);
554 atexit (close_stdout);
556 while ((optc = getopt_long (argc, argv, "sfwiqbhlp", longopts, NULL)) != -1)
561 do_short_format = true;
565 do_short_format = false;
569 include_heading = false;
573 include_fullname = false;
577 include_fullname = false;
579 include_where = false;
584 include_fullname = false;
586 include_where = false;
588 include_idle = false;
592 include_project = false;
596 include_plan = false;
600 include_home_and_shell = false;
603 case_GETOPT_HELP_CHAR;
605 case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
608 usage (EXIT_FAILURE);
612 n_users = argc - optind;
614 if (!do_short_format && n_users == 0)
616 error (0, 0, _("no username specified; at least one must be\
617 specified when using -l"));
618 usage (EXIT_FAILURE);
622 short_pinky (UTMP_FILE, n_users, argv + optind);
624 long_pinky (n_users, argv + optind);