From f9ab90d9d6d02989a075d0f0074496d5b1045e4b Mon Sep 17 00:00:00 2001 From: rgrimes Date: Fri, 27 May 1994 12:33:43 +0000 Subject: BSD 4.4 Lite Usr.bin Sources --- usr.bin/finger/finger.c | 257 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 257 insertions(+) create mode 100644 usr.bin/finger/finger.c (limited to 'usr.bin/finger/finger.c') diff --git a/usr.bin/finger/finger.c b/usr.bin/finger/finger.c new file mode 100644 index 0000000..5a16765 --- /dev/null +++ b/usr.bin/finger/finger.c @@ -0,0 +1,257 @@ +/* + * 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. + */ + +#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 office location/phone number. 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; +char tbuf[1024]; + +static void loginlist __P((void)); +static void userlist __P((int, char **)); + +main(argc, argv) + int argc; + char **argv; +{ + int ch; + + while ((ch = getopt(argc, argv, "lmps")) != 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 '?': + default: + (void)fprintf(stderr, + "usage: finger [-lmps] [login ...]\n"); + exit(1); + } + argc -= optind; + argv += optind; + + (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; + 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)) + 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)) { + 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 (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); + } +} -- cgit v1.1