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-rw-r--r--adv_cmds/finger/finger.c416
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diff --git a/adv_cmds/finger/finger.c b/adv_cmds/finger/finger.c
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+/*
+ * 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 <lm@rmit.edu.au> 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 const char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)finger.c 8.5 (Berkeley) 5/4/95";
+#endif
+#endif
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/usr.bin/finger/finger.c,v 1.36 2005/09/19 10:11:46 dds Exp $");
+
+/*
+ * 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/types.h>
+#include <sys/socket.h>
+#include <db.h>
+#include <err.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <utmpx.h>
+#include <locale.h>
+
+#include "finger.h"
+#include "pathnames.h"
+
+DB *db;
+time_t now;
+int entries, gflag, kflag, lflag, mflag, pplan, sflag, oflag, Tflag;
+sa_family_t family = PF_UNSPEC;
+int d_first = -1;
+char tbuf[1024];
+int invoker_root = 0;
+
+static void loginlist(void);
+static int option(int, char **);
+static void usage(void);
+static void userlist(int, char **);
+
+static int
+option(int argc, char **argv)
+{
+ int ch;
+
+ optind = 1; /* reset getopt */
+
+#ifdef __APPLE__
+ while ((ch = getopt(argc, argv, "46gklmpsho")) != -1)
+#else
+ while ((ch = getopt(argc, argv, "46gklmpshoT")) != -1)
+#endif
+ switch(ch) {
+ case '4':
+ family = AF_INET;
+ break;
+ case '6':
+ family = AF_INET6;
+ break;
+ case 'g':
+ gflag = 1;
+ break;
+ case 'k':
+ kflag = 1; /* keep going without utmpx */
+ break;
+ 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;
+#ifndef __APPLE__
+ case 'T':
+ Tflag = 1; /* disable T/TCP */
+ break;
+#endif
+ case '?':
+ default:
+ usage();
+ }
+
+ return optind;
+}
+
+static void
+usage(void)
+{
+ (void)fprintf(stderr,
+ "usage: finger [-46gklmpshoT] [user ...] [user@host ...]\n");
+ exit(1);
+}
+
+int
+main(int argc, char **argv)
+{
+ int envargc, argcnt;
+ char *envargv[3];
+ struct passwd *pw;
+ static char myname[] = "finger";
+
+ if (getuid() == 0 || geteuid() == 0) {
+ invoker_root = 1;
+ if ((pw = getpwnam(UNPRIV_NAME)) && pw->pw_uid > 0) {
+ setgid(pw->pw_gid);
+ setuid(pw->pw_uid);
+ } else {
+ setgid(UNPRIV_UGID);
+ setuid(UNPRIV_UGID);
+ }
+ }
+
+ (void) setlocale(LC_ALL, "");
+
+ /* 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] = myname;
+ 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();
+ }
+ return (0);
+}
+
+static void
+loginlist(void)
+{
+ PERSON *pn;
+ DBT data, key;
+ struct passwd *pw;
+ struct utmpx *user;
+ int r, sflag1;
+ char name[_UTX_USERSIZE + 1];
+
+ if (kflag)
+ errx(1, "can't list logins without reading utmpx");
+
+ setutxent();
+ name[_UTX_USERSIZE] = '\0';
+ while ((user = getutxent()) != NULL) {
+ if (!user->ut_user[0] || user->ut_type != USER_PROCESS)
+ continue;
+ if ((pn = find_person(user->ut_user)) == NULL) {
+ bcopy(user->ut_user, name, _UTX_USERSIZE);
+ if ((pw = getpwnam(name)) == NULL)
+ continue;
+ if (hide(pw))
+ continue;
+ pn = enter_person(pw);
+ }
+ enter_where(user, pn);
+ }
+ endutxent();
+ if (db && lflag)
+ for (sflag1 = R_FIRST;; sflag1 = R_NEXT) {
+ PERSON *tmp;
+
+ r = (*db->seq)(db, &key, &data, sflag1);
+ 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 utmpx *user;
+ struct passwd *pw;
+ int r, sflag1, *used, *ip;
+ char **ap, **nargv, **np, **p;
+ FILE *conf_fp;
+ char conf_alias[LINE_MAX];
+ char *conf_realname;
+ int conf_length;
+
+ if ((nargv = malloc((argc+1) * sizeof(char *))) == NULL ||
+ (used = calloc(argc, sizeof(int))) == NULL)
+ err(1, NULL);
+
+ /* 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;
+
+ /*
+ * Mark any arguments beginning with '/' as invalid so that we
+ * don't accidently confuse them with expansions from finger.conf
+ */
+ for (p = argv, ip = used; *p; ++p, ++ip)
+ if (**p == '/') {
+ *ip = 1;
+ warnx("%s: no such user", *p);
+ }
+
+ /*
+ * Traverse the finger alias configuration file of the form
+ * alias:(user|alias), ignoring comment lines beginning '#'.
+ */
+ if ((conf_fp = fopen(_PATH_FINGERCONF, "r")) != NULL) {
+ while(fgets(conf_alias, sizeof(conf_alias), conf_fp) != NULL) {
+ conf_length = strlen(conf_alias);
+ if (*conf_alias == '#' || conf_alias[--conf_length] != '\n')
+ continue;
+ conf_alias[conf_length] = '\0'; /* Remove trailing LF */
+ if ((conf_realname = strchr(conf_alias, ':')) == NULL)
+ continue;
+ *conf_realname = '\0'; /* Replace : with NUL */
+ for (p = argv; *p; ++p) {
+ if (strcmp(*p, conf_alias) == 0) {
+ if ((*p = strdup(conf_realname+1)) == NULL) {
+ err(1, NULL);
+ }
+ }
+ }
+ }
+ (void)fclose(conf_fp);
+ }
+
+ /*
+ * Traverse the list of possible login names and check the login name
+ * and real name against the name specified by the user. If the name
+ * begins with a '/', try to read the file of that name instead of
+ * gathering the traditional finger information.
+ */
+ if (mflag)
+ for (p = argv, ip = used; *p; ++p, ++ip) {
+ if (**p != '/' || *ip == 1 || !show_text("", *p, "")) {
+ if (((pw = getpwnam(*p)) != NULL) && !hide(pw))
+ enter_person(pw);
+ else if (!*ip)
+ warnx("%s: no such user", *p);
+ }
+ }
+ else {
+ while ((pw = getpwent()) != NULL) {
+ for (p = argv, ip = used; *p; ++p, ++ip)
+ if (**p == '/' && *ip != 1
+ && show_text("", *p, ""))
+ *ip = 1;
+ else if (match(pw, *p) && !hide(pw)) {
+ 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 (*p || entries)
+ printf("\n");
+ }
+
+ if (entries == 0)
+ return;
+
+ if (kflag)
+ return;
+
+ /*
+ * Scan thru the list of users currently logged in, saving
+ * appropriate data whenever a match occurs.
+ */
+ setutxent();
+ while ((user = getutxent()) != NULL) {
+ if (!user->ut_user && user->ut_type != USER_PROCESS)
+ continue;
+ if ((pn = find_person(user->ut_user)) == NULL)
+ continue;
+ enter_where(user, pn);
+ }
+ endutxent();
+ if (db)
+ for (sflag1 = R_FIRST;; sflag1 = R_NEXT) {
+ PERSON *tmp;
+
+ r = (*db->seq)(db, &key, &data, sflag1);
+ if (r == -1)
+ err(1, "db seq");
+ if (r == 1)
+ break;
+ memmove(&tmp, data.data, sizeof tmp);
+ enter_lastlog(tmp);
+ }
+}
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