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https://github.com/freebsd/freebsd-src
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86641d8f9c
By default, behave like the old ugly 4.4bsd finger and print office information instead of remote login information. It's an easy one line fix to make it behave like most other vendor's fingers if we decide to change the default. Reviewed by: pst
399 lines
8.9 KiB
C
399 lines
8.9 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)util.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <db.h>
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#include <pwd.h>
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#include <utmp.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <paths.h>
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#include <errno.h>
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#include "finger.h"
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static void find_idle_and_ttywrite __P((WHERE *));
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static void userinfo __P((PERSON *, struct passwd *));
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static WHERE *walloc __P((PERSON *));
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int
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match(pw, user)
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struct passwd *pw;
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char *user;
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{
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register char *p, *t;
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char name[1024];
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if (!strcasecmp(pw->pw_name, user))
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return(1);
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/*
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* XXX
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* Why do we skip asterisks!?!?
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*/
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(void)strcpy(p = tbuf, pw->pw_gecos);
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if (*p == '*')
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++p;
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/* Ampersands get replaced by the login name. */
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if ((p = strtok(p, ",")) == NULL)
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return(0);
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for (t = name; *t = *p; ++p)
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if (*t == '&') {
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(void)strcpy(t, pw->pw_name);
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while (*++t);
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}
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else
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++t;
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for (t = name; p = strtok(t, "\t "); t = NULL)
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if (!strcasecmp(p, user))
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return(1);
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return(0);
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}
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void
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enter_lastlog(pn)
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register PERSON *pn;
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{
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register WHERE *w;
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static int opened, fd;
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struct lastlog ll;
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char doit = 0;
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/* some systems may not maintain lastlog, don't report errors. */
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if (!opened) {
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fd = open(_PATH_LASTLOG, O_RDONLY, 0);
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opened = 1;
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}
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if (fd == -1 ||
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lseek(fd, (long)pn->uid * sizeof(ll), SEEK_SET) !=
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(long)pn->uid * sizeof(ll) ||
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read(fd, (char *)&ll, sizeof(ll)) != sizeof(ll)) {
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/* as if never logged in */
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ll.ll_line[0] = ll.ll_host[0] = NULL;
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ll.ll_time = 0;
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}
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if ((w = pn->whead) == NULL)
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doit = 1;
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else if (ll.ll_time != 0) {
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/* if last login is earlier than some current login */
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for (; !doit && w != NULL; w = w->next)
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if (w->info == LOGGEDIN && w->loginat < ll.ll_time)
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doit = 1;
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/*
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* and if it's not any of the current logins
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* can't use time comparison because there may be a small
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* discrepency since login calls time() twice
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*/
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for (w = pn->whead; doit && w != NULL; w = w->next)
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if (w->info == LOGGEDIN &&
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strncmp(w->tty, ll.ll_line, UT_LINESIZE) == 0)
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doit = 0;
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}
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if (doit) {
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w = walloc(pn);
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w->info = LASTLOG;
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bcopy(ll.ll_line, w->tty, UT_LINESIZE);
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w->tty[UT_LINESIZE] = 0;
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bcopy(ll.ll_host, w->host, UT_HOSTSIZE);
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w->host[UT_HOSTSIZE] = 0;
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w->loginat = ll.ll_time;
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}
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}
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void
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enter_where(ut, pn)
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struct utmp *ut;
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PERSON *pn;
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{
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register WHERE *w;
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w = walloc(pn);
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w->info = LOGGEDIN;
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bcopy(ut->ut_line, w->tty, UT_LINESIZE);
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w->tty[UT_LINESIZE] = 0;
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bcopy(ut->ut_host, w->host, UT_HOSTSIZE);
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w->host[UT_HOSTSIZE] = 0;
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w->loginat = (time_t)ut->ut_time;
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find_idle_and_ttywrite(w);
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}
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PERSON *
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enter_person(pw)
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register struct passwd *pw;
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{
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DBT data, key;
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PERSON *pn;
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if (db == NULL &&
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(db = dbopen(NULL, O_RDWR, 0, DB_BTREE, NULL)) == NULL)
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err("%s", strerror(errno));
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key.data = pw->pw_name;
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key.size = strlen(pw->pw_name);
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switch((*db->get)(db, &key, &data, 0)) {
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case 0:
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return(*(PERSON **)data.data);
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default:
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case -1:
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err("db get: %s", strerror(errno));
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/* NOTREACHED */
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case 1:
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++entries;
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pn = palloc();
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userinfo(pn, pw);
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pn->whead = NULL;
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data.size = sizeof(PERSON *);
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data.data = &pn;
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if ((*db->put)(db, &key, &data, 0))
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err("%s", strerror(errno));
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return(pn);
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}
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}
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PERSON *
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find_person(name)
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char *name;
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{
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register int cnt;
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DBT data, key;
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char buf[UT_NAMESIZE + 1];
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if (!db)
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return(NULL);
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/* Name may be only UT_NAMESIZE long and not NUL terminated. */
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for (cnt = 0; cnt < UT_NAMESIZE && *name; ++name, ++cnt)
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buf[cnt] = *name;
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buf[cnt] = '\0';
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key.data = buf;
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key.size = cnt;
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return((*db->get)(db, &key, &data, 0) ? NULL : *(PERSON **)data.data);
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}
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PERSON *
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palloc()
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{
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PERSON *p;
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if ((p = malloc((u_int) sizeof(PERSON))) == NULL)
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err("%s", strerror(errno));
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return(p);
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}
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static WHERE *
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walloc(pn)
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register PERSON *pn;
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{
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register WHERE *w;
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if ((w = malloc((u_int) sizeof(WHERE))) == NULL)
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err("%s", strerror(errno));
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if (pn->whead == NULL)
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pn->whead = pn->wtail = w;
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else {
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pn->wtail->next = w;
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pn->wtail = w;
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}
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w->next = NULL;
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return(w);
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}
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char *
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prphone(num)
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char *num;
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{
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register char *p;
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int len;
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static char pbuf[15];
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/* don't touch anything if the user has their own formatting */
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for (p = num; *p; ++p)
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if (!isdigit(*p))
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return(num);
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len = p - num;
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p = pbuf;
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switch(len) {
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case 11: /* +0-123-456-7890 */
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*p++ = '+';
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*p++ = *num++;
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*p++ = '-';
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/* FALLTHROUGH */
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case 10: /* 012-345-6789 */
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*p++ = *num++;
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*p++ = *num++;
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*p++ = *num++;
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*p++ = '-';
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/* FALLTHROUGH */
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case 7: /* 012-3456 */
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*p++ = *num++;
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*p++ = *num++;
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*p++ = *num++;
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break;
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case 5: /* x0-1234 */
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case 4: /* x1234 */
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*p++ = 'x';
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*p++ = *num++;
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break;
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default:
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return(num);
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}
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if (len != 4) {
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*p++ = '-';
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*p++ = *num++;
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}
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*p++ = *num++;
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*p++ = *num++;
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*p++ = *num++;
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*p = '\0';
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return(pbuf);
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}
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static void
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find_idle_and_ttywrite(w)
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register WHERE *w;
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{
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extern time_t now;
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struct stat sb;
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(void)snprintf(tbuf, sizeof(tbuf), "%s/%s", _PATH_DEV, w->tty);
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if (stat(tbuf, &sb) < 0) {
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(void)fprintf(stderr,
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"finger: %s: %s\n", tbuf, strerror(errno));
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return;
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}
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w->idletime = now < sb.st_atime ? 0 : now - sb.st_atime;
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#define TALKABLE 0220 /* tty is writable if 220 mode */
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w->writable = ((sb.st_mode & TALKABLE) == TALKABLE);
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}
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static void
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userinfo(pn, pw)
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register PERSON *pn;
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register struct passwd *pw;
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{
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register char *p, *t;
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char *bp, name[1024];
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struct stat sb;
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pn->realname = pn->office = pn->officephone = pn->homephone = NULL;
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pn->uid = pw->pw_uid;
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pn->name = strdup(pw->pw_name);
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pn->dir = strdup(pw->pw_dir);
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pn->shell = strdup(pw->pw_shell);
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/* why do we skip asterisks!?!? */
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(void)strcpy(bp = tbuf, pw->pw_gecos);
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if (*bp == '*')
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++bp;
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/* ampersands get replaced by the login name */
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if (!(p = strsep(&bp, ",")))
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return;
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for (t = name; *t = *p; ++p)
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if (*t == '&') {
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(void)strcpy(t, pw->pw_name);
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if (islower(*t))
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*t = toupper(*t);
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while (*++t);
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}
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else
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++t;
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pn->realname = strdup(name);
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pn->office = ((p = strsep(&bp, ",")) && *p) ?
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strdup(p) : NULL;
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pn->officephone = ((p = strsep(&bp, ",")) && *p) ?
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strdup(p) : NULL;
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pn->homephone = ((p = strsep(&bp, ",")) && *p) ?
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strdup(p) : NULL;
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(void)sprintf(tbuf,"%s/%s", _PATH_MAILDIR, pw->pw_name);
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pn->mailrecv = -1; /* -1 == not_valid */
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if (stat(tbuf, &sb) < 0) {
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if (errno != ENOENT) {
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(void)fprintf(stderr,
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"finger: %s: %s\n", tbuf, strerror(errno));
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return;
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}
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} else if (sb.st_size != 0) {
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pn->mailrecv = sb.st_mtime;
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pn->mailread = sb.st_atime;
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}
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}
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#if __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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void
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#if __STDC__
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err(const char *fmt, ...)
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#else
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err(fmt, va_alist)
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char *fmt;
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va_dcl
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#endif
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{
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va_list ap;
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#if __STDC__
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va_start(ap, fmt);
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#else
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va_start(ap);
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#endif
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(void)fprintf(stderr, "finger: ");
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(void)vfprintf(stderr, fmt, ap);
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va_end(ap);
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(void)fprintf(stderr, "\n");
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exit(1);
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/* NOTREACHED */
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}
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