/* $NetBSD: finger.c,v 1.31 2021/10/30 09:12:09 nia Exp $ */ /* * 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. 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 <lukem@NetBSD.org> added the following on 961121: * - 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. */ #include <sys/cdefs.h> #ifndef lint __COPYRIGHT("@(#) Copyright (c) 1989, 1993\ The Regents of the University of California. All rights reserved."); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)finger.c 8.5 (Berkeley) 5/4/95"; #else __RCSID("$NetBSD: finger.c,v 1.31 2021/10/30 09:12:09 nia Exp $"); #endif #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 <sys/param.h> #include <db.h> #include <err.h> #include <errno.h> #include <fcntl.h> #include <pwd.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> #include <unistd.h> #include <locale.h> #include <langinfo.h> #include "utmpentry.h" #include "finger.h" #include "extern.h" DB *db; time_t now; int entries, gflag, lflag, mflag, oflag, sflag, eightflag, pplan; char tbuf[1024]; struct utmpentry *ehead; static void loginlist(void); static void userlist(int, char **); int main(int argc, char **argv) { int ch; /* Allow user's locale settings to affect character output. */ setlocale(LC_CTYPE, ""); /* * Reset back to the C locale, unless we are using a known * single-byte 8-bit locale. */ if (strncmp(nl_langinfo(CODESET), "ISO8859-", 8)) setlocale(LC_CTYPE, "C"); oflag = 1; /* default to old "office" behavior */ while ((ch = getopt(argc, argv, "lmpshog8")) != -1) 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 'g': gflag = 1; /* no gecos info, besides name */ break; case '8': eightflag = 1; /* 8-bit pass-through */ break; case '?': default: (void)fprintf(stderr, "usage: finger [-lmpshog8] [login ...]\n"); exit(1); } argc -= optind; argv += optind; (void)time(&now); setpassent(1); entries = getutentries(NULL, &ehead); if (argc == 0) { /* * 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(); } return (0); } static void loginlist(void) { PERSON *pn; DBT data, key; struct passwd *pw; int r, seqflag; struct utmpentry *ep; for (ep = ehead; ep; ep = ep->next) { if ((pn = find_person(ep->name)) == NULL) { if ((pw = getpwnam(ep->name)) == NULL) continue; pn = enter_person(pw); } enter_where(ep, pn); } if (db && lflag) for (seqflag = R_FIRST;; seqflag = R_NEXT) { PERSON *tmp; r = (*db->seq)(db, &key, &data, seqflag); if (r == -1) err(1, "db seq"); if (r == 1) break; memmove(&tmp, data.data, sizeof tmp); enter_lastlog(tmp); } } static void userlist(int argc, char **argv) { PERSON *pn; DBT data, key; struct passwd *pw; int r, seqflag, *used, *ip; char **ap, **nargv, **np, **p; struct utmpentry *ep; nargv = NULL; if (reallocarr(&nargv, argc + 1, sizeof(char *)) != 0) err(1, NULL); if ((used = calloc(argc, sizeof(int))) == NULL) err(1, NULL); /* Pull out all network requests. */ for (ap = p = argv, np = nargv; *p; ++p) if (strchr(*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)) != NULL) enter_person(pw); else warnx("%s: no such user", *p); } else { while ((pw = getpwent()) != NULL) for (p = argv, ip = used; *p; ++p, ++ip) if (match(pw, *p)) { enter_person(pw); *ip = 1; } for (p = argv, ip = used; *p; ++p, ++ip) if (!*ip) warnx("%s: no such user", *p); } /* Handle network requests. */ net: for (p = nargv; *p;) netfinger(*p++); if (entries == 0) goto done; /* * Scan thru the list of users currently logged in, saving * appropriate data whenever a match occurs. */ for (ep = ehead; ep; ep = ep->next) { if ((pn = find_person(ep->name)) == NULL) continue; enter_where(ep, pn); } if (db != NULL) for (seqflag = R_FIRST;; seqflag = R_NEXT) { PERSON *tmp; r = (*db->seq)(db, &key, &data, seqflag); if (r == -1) err(1, "db seq"); if (r == 1) break; memmove(&tmp, data.data, sizeof tmp); enter_lastlog(tmp); } done: free(nargv); free(used); }
