/* * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Tony Nardo of the Johns Hopkins University/Applied Physics Lab. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Luke Mewburn added the following on 940622: * - mail status ("No Mail", "Mail read:...", or "New Mail ..., * Unread since ...".) * - 4 digit phone extensions (3210 is printed as x3210.) * - host/office toggling in short format with -h & -o. * - short day names (`Tue' printed instead of `Jun 21' if the * login time is < 6 days. */ #ifndef lint static char copyright[] = "@(#) Copyright (c) 1989, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)finger.c 8.2 (Berkeley) 9/30/93"; #endif /* not lint */ /* * Finger prints out information about users. It is not portable since * certain fields (e.g. the full user name, office, and phone numbers) are * extracted from the gecos field of the passwd file which other UNIXes * may not have or may use for other things. * * There are currently two output formats; the short format is one line * per user and displays login name, tty, login time, real name, idle time, * and either remote host information (default) or office location/phone * number, depending on if -h or -o is used respectively. * The long format gives the same information (in a more legible format) as * well as home directory, shell, mail info, and .plan/.project files. */ #include #include #include #include #include #include #include #include #include #include #include "finger.h" DB *db; time_t now; int entries, lflag, mflag, pplan, sflag, oflag; char tbuf[1024]; static void loginlist __P((void)); static void userlist __P((int, char **)); int option(argc, argv) int argc; char **argv; { int ch; optind = 1; /* reset getopt */ while ((ch = getopt(argc, argv, "lmpsho")) != EOF) switch(ch) { case 'l': lflag = 1; /* long format */ break; case 'm': mflag = 1; /* force exact match of names */ break; case 'p': pplan = 1; /* don't show .plan/.project */ break; case 's': sflag = 1; /* short format */ break; case 'h': oflag = 0; /* remote host info */ break; case 'o': oflag = 1; /* office info */ break; case '?': default: (void)fprintf(stderr, "usage: finger [-lmpsho] [login ...]\n"); exit(1); } return optind; } main(argc, argv) int argc; char **argv; { int ch, envargc, argcnt; char *envargv[3]; /* remove this line to get remote host */ oflag = 1; /* default to old "office" behavior */ /* * Process environment variables followed by command line arguments. */ if ((envargv[1] = getenv("FINGER"))) { envargc = 2; envargv[0] = "finger"; envargv[2] = NULL; (void) option(envargc, envargv); } argcnt = option(argc, argv); argc -= argcnt; argv += argcnt; (void)time(&now); setpassent(1); if (!*argv) { /* * Assign explicit "small" format if no names given and -l * not selected. Force the -s BEFORE we get names so proper * screening will be done. */ if (!lflag) sflag = 1; /* if -l not explicit, force -s */ loginlist(); if (entries == 0) (void)printf("No one logged on.\n"); } else { userlist(argc, argv); /* * Assign explicit "large" format if names given and -s not * explicitly stated. Force the -l AFTER we get names so any * remote finger attempts specified won't be mishandled. */ if (!sflag) lflag = 1; /* if -s not explicit, force -l */ } if (entries) if (lflag) lflag_print(); else sflag_print(); exit(0); } static void loginlist() { register PERSON *pn; DBT data, key; struct passwd *pw; struct utmp user; int r, sflag; char name[UT_NAMESIZE + 1]; if (!freopen(_PATH_UTMP, "r", stdin)) err("%s: %s", _PATH_UTMP, strerror(errno)); name[UT_NAMESIZE] = NULL; while (fread((char *)&user, sizeof(user), 1, stdin) == 1) { if (!user.ut_name[0]) continue; if ((pn = find_person(user.ut_name)) == NULL) { bcopy(user.ut_name, name, UT_NAMESIZE); if ((pw = getpwnam(name)) == NULL) continue; if (hide(pw)) continue; pn = enter_person(pw); } enter_where(&user, pn); } if (db && lflag) for (sflag = R_FIRST;; sflag = R_NEXT) { r = (*db->seq)(db, &key, &data, sflag); if (r == -1) err("db seq: %s", strerror(errno)); if (r == 1) break; enter_lastlog(*(PERSON **)data.data); } } static void userlist(argc, argv) register int argc; register char **argv; { register PERSON *pn; DBT data, key; struct utmp user; struct passwd *pw; int r, sflag, *used, *ip; char **ap, **nargv, **np, **p; if ((nargv = malloc((argc+1) * sizeof(char *))) == NULL || (used = calloc(argc, sizeof(int))) == NULL) err("%s", strerror(errno)); /* Pull out all network requests. */ for (ap = p = argv, np = nargv; *p; ++p) if (index(*p, '@')) *np++ = *p; else *ap++ = *p; *np++ = NULL; *ap++ = NULL; if (!*argv) goto net; /* * Traverse the list of possible login names and check the login name * and real name against the name specified by the user. */ if (mflag) for (p = argv; *p; ++p) if ((pw = getpwnam(*p)) && !hide(pw)) enter_person(pw); else (void)fprintf(stderr, "finger: %s: no such user\n", *p); else { while (pw = getpwent()) { for (p = argv, ip = used; *p; ++p, ++ip) if (match(pw, *p) && !hide(pw)) { enter_person(pw); *ip = 1; } } for (p = argv, ip = used; *p; ++p, ++ip) if (!*ip) (void)fprintf(stderr, "finger: %s: no such user\n", *p); } /* Handle network requests. */ net: for (p = nargv; *p;) { netfinger(*p++); if (*p || entries) printf("\n"); } if (entries == 0) return; /* * Scan thru the list of users currently logged in, saving * appropriate data whenever a match occurs. */ if (!freopen(_PATH_UTMP, "r", stdin)) err("%s: %s", _PATH_UTMP, strerror(errno)); while (fread((char *)&user, sizeof(user), 1, stdin) == 1) { if (!user.ut_name[0]) continue; if ((pn = find_person(user.ut_name)) == NULL) continue; enter_where(&user, pn); } if (db) for (sflag = R_FIRST;; sflag = R_NEXT) { r = (*db->seq)(db, &key, &data, sflag); if (r == -1) err("db seq: %s", strerror(errno)); if (r == 1) break; enter_lastlog(*(PERSON **)data.data); } }