/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * 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.
 */

#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <db.h>
#include <err.h>
#include <langinfo.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <utmpx.h>
#include "finger.h"

static void       stimeprint(WHERE *);

void
sflag_print(void)
{
        PERSON *pn;
        WHERE *w;
        int sflag, r, namelen;
        char p[80];
        PERSON *tmp;
        DBT data, key;
        struct tm *lc;

        if (d_first < 0)
                d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
        /*
         * short format --
         *      login name
         *      real name
         *      terminal name (the XX of ttyXX)
         *      if terminal writeable (add an '*' to the terminal name
         *              if not)
         *      if logged in show idle time and day logged in, else
         *              show last login date and time.
         *              If > 6 months, show year instead of time.
         *      if (-o)
         *              office location
         *              office phone
         *      else
         *              remote host
         */
#define MAXREALNAME     16
#define MAXHOSTNAME     17      /* in reality, hosts are never longer than 16 */
        (void)printf("%-*s %-*s%s %s\n", MAXLOGNAME, "Login", MAXREALNAME,
            "Name", " TTY      Idle  Login  Time  ", (gflag) ? "" :
            oflag ? "Office  Phone" : "Where");

        for (sflag = R_FIRST;; sflag = R_NEXT) {
                r = (*db->seq)(db, &key, &data, sflag);
                if (r == -1)
                        err(1, "db seq");
                if (r == 1)
                        break;
                memmove(&tmp, data.data, sizeof tmp);
                pn = tmp;

                for (w = pn->whead; w != NULL; w = w->next) {
                        namelen = MAXREALNAME;
                        if (w->info == LOGGEDIN && !w->writable)
                                --namelen;      /* leave space before `*' */
                        (void)printf("%-*.*s %-*.*s", MAXLOGNAME, MAXLOGNAME,
                                pn->name, MAXREALNAME, namelen,
                                pn->realname ? pn->realname : "");
                        if (!w->loginat) {
                                (void)printf("  *     *   No logins   ");
                                goto office;
                        }
                        (void)putchar(w->info == LOGGEDIN && !w->writable ?
                            '*' : ' ');
                        if (*w->tty)
                                (void)printf("%-7.7s ",
                                             (strncmp(w->tty, "tty", 3)
                                              && strncmp(w->tty, "cua", 3))
                                             ? w->tty : w->tty + 3);
                        else
                                (void)printf("        ");
                        if (w->info == LOGGEDIN) {
                                stimeprint(w);
                                (void)printf("  ");
                        } else
                                (void)printf("    *  ");
                        lc = localtime(&w->loginat);
#define SECSPERDAY 86400
#define DAYSPERWEEK 7
#define DAYSPERNYEAR 365
                        if (now - w->loginat < SECSPERDAY * (DAYSPERWEEK - 1)) {
                                (void)strftime(p, sizeof(p), "%a", lc);
                        } else {
                                (void)strftime(p, sizeof(p),
                                             d_first ? "%e %b" : "%b %e", lc);
                        }
                        (void)printf("%-6.6s", p);
                        if (now - w->loginat >= SECSPERDAY * DAYSPERNYEAR / 2) {
                                (void)strftime(p, sizeof(p), "%Y", lc);
                        } else {
                                (void)strftime(p, sizeof(p), "%R", lc);
                        }
                        (void)printf(" %-5.5s", p);
office:
                        if (gflag)
                                goto no_gecos;
                        if (oflag) {
                                if (pn->office)
                                        (void)printf(" %-7.7s", pn->office);
                                else if (pn->officephone)
                                        (void)printf(" %-7.7s", " ");
                                if (pn->officephone)
                                        (void)printf(" %-.15s",
                                            prphone(pn->officephone));
                        } else
                                (void)printf(" %.*s", MAXHOSTNAME, w->host);
no_gecos:
                        putchar('\n');
                }
        }
}

static void
stimeprint(WHERE *w)
{
        struct tm *delta;

        if (w->idletime == -1) {
                (void)printf("     ");
                return;
        }

        delta = gmtime(&w->idletime);
        if (!delta->tm_yday)
                if (!delta->tm_hour)
                        if (!delta->tm_min)
                                (void)printf("     ");
                        else
                                (void)printf("%5d", delta->tm_min);
                else
                        (void)printf("%2d:%02d",
                            delta->tm_hour, delta->tm_min);
        else
                (void)printf("%4dd", delta->tm_yday);
}