/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1990, 1993, 1994
 *      The Regents of the University of California.  All rights reserved.
 *
 * 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/time.h>
#include <sys/resource.h>
#include <sys/proc.h>
#include <sys/stat.h>

#include <sys/mac.h>
#include <sys/user.h>
#include <sys/sysctl.h>
#include <sys/vmmeter.h>

#include <grp.h>
#include <jail.h>
#include <langinfo.h>
#include <locale.h>
#include <math.h>
#include <nlist.h>
#include <pwd.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>
#include <libxo/xo.h>

#include "ps.h"

#define COMMAND_WIDTH   16
#define ARGUMENTS_WIDTH 16

#define ps_pgtok(a)     (((a) * getpagesize()) / 1024)

void
printheader(void)
{
        const VAR *v;
        struct varent *vent;

        STAILQ_FOREACH(vent, &varlist, next_ve)
                if (*vent->header != '\0')
                        break;
        if (!vent)
                return;

        STAILQ_FOREACH(vent, &varlist, next_ve) {
                v = vent->var;
                if (v->flag & LJUST) {
                        if (STAILQ_NEXT(vent, next_ve) == NULL) /* last one */
                                xo_emit("{T:/%hs}", vent->header);
                        else
                                xo_emit("{T:/%-*hs}", vent->width, vent->header);
                } else
                        xo_emit("{T:/%*hs}", vent->width, vent->header);
                if (STAILQ_NEXT(vent, next_ve) != NULL)
                        xo_emit("{P: }");
        }
        xo_emit("\n");
}

char *
arguments(KINFO *k, VARENT *ve)
{
        char *vis_args;

        if ((vis_args = malloc(strlen(k->ki_args) * 4 + 1)) == NULL)
                xo_errx(1, "malloc failed");
        strvis(vis_args, k->ki_args, VIS_TAB | VIS_NL | VIS_NOSLASH);

        if (STAILQ_NEXT(ve, next_ve) != NULL && strlen(vis_args) > ARGUMENTS_WIDTH)
                vis_args[ARGUMENTS_WIDTH] = '\0';

        return (vis_args);
}

char *
command(KINFO *k, VARENT *ve)
{
        char *vis_args, *vis_env, *str;

        if (cflag) {
                /* If it is the last field, then don't pad */
                if (STAILQ_NEXT(ve, next_ve) == NULL) {
                        asprintf(&str, "%s%s%s%s%s",
                            k->ki_d.prefix ? k->ki_d.prefix : "",
                            k->ki_p->ki_comm,
                            (showthreads && k->ki_p->ki_numthreads > 1) ? "/" : "",
                            (showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_tdname : "",
                            (showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_moretdname : "");
                } else
                        str = strdup(k->ki_p->ki_comm);

                return (str);
        }
        if ((vis_args = malloc(strlen(k->ki_args) * 4 + 1)) == NULL)
                xo_errx(1, "malloc failed");
        strvis(vis_args, k->ki_args, VIS_TAB | VIS_NL | VIS_NOSLASH);

        if (STAILQ_NEXT(ve, next_ve) == NULL) {
                /* last field */

                if (k->ki_env) {
                        if ((vis_env = malloc(strlen(k->ki_env) * 4 + 1))
                            == NULL)
                                xo_errx(1, "malloc failed");
                        strvis(vis_env, k->ki_env,
                            VIS_TAB | VIS_NL | VIS_NOSLASH);
                } else
                        vis_env = NULL;

                asprintf(&str, "%s%s%s%s",
                    k->ki_d.prefix ? k->ki_d.prefix : "",
                    vis_env ? vis_env : "",
                    vis_env ? " " : "",
                    vis_args);

                if (vis_env != NULL)
                        free(vis_env);
                free(vis_args);
        } else {
                /* ki_d.prefix & ki_env aren't shown for interim fields */
                str = vis_args;

                if (strlen(str) > COMMAND_WIDTH)
                        str[COMMAND_WIDTH] = '\0';
        }

        return (str);
}

char *
ucomm(KINFO *k, VARENT *ve)
{
        char *str;

        if (STAILQ_NEXT(ve, next_ve) == NULL) { /* last field, don't pad */
                asprintf(&str, "%s%s%s%s%s",
                    k->ki_d.prefix ? k->ki_d.prefix : "",
                    k->ki_p->ki_comm,
                    (showthreads && k->ki_p->ki_numthreads > 1) ? "/" : "",
                    (showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_tdname : "",
                    (showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_moretdname : "");
        } else {
                if (showthreads && k->ki_p->ki_numthreads > 1)
                        asprintf(&str, "%s/%s%s", k->ki_p->ki_comm,
                            k->ki_p->ki_tdname, k->ki_p->ki_moretdname);
                else
                        str = strdup(k->ki_p->ki_comm);
        }
        return (str);
}

char *
tdnam(KINFO *k, VARENT *ve __unused)
{
        char *str;

        if (showthreads && k->ki_p->ki_numthreads > 1)
                asprintf(&str, "%s%s", k->ki_p->ki_tdname,
                    k->ki_p->ki_moretdname);
        else
                str = strdup("      ");

        return (str);
}

char *
logname(KINFO *k, VARENT *ve __unused)
{

        if (*k->ki_p->ki_login == '\0')
                return (NULL);
        return (strdup(k->ki_p->ki_login));
}

char *
state(KINFO *k, VARENT *ve __unused)
{
        long flag, tdflags;
        char *cp, *buf;

        buf = malloc(16);
        if (buf == NULL)
                xo_errx(1, "malloc failed");

        flag = k->ki_p->ki_flag;
        tdflags = k->ki_p->ki_tdflags;  /* XXXKSE */
        cp = buf;

        switch (k->ki_p->ki_stat) {

        case SSTOP:
                *cp = 'T';
                break;

        case SSLEEP:
                if (tdflags & TDF_SINTR)        /* interruptible (long) */
                        *cp = k->ki_p->ki_slptime >= MAXSLP ? 'I' : 'S';
                else
                        *cp = 'D';
                break;

        case SRUN:
        case SIDL:
                *cp = 'R';
                break;

        case SWAIT:
                *cp = 'W';
                break;

        case SLOCK:
                *cp = 'L';
                break;

        case SZOMB:
                *cp = 'Z';
                break;

        default:
                *cp = '?';
        }
        cp++;
        if (k->ki_p->ki_nice < NZERO || k->ki_p->ki_pri.pri_class == PRI_REALTIME)
                *cp++ = '<';
        else if (k->ki_p->ki_nice > NZERO || k->ki_p->ki_pri.pri_class == PRI_IDLE)
                *cp++ = 'N';
        if (flag & P_TRACED)
                *cp++ = 'X';
        if (flag & P_WEXIT && k->ki_p->ki_stat != SZOMB)
                *cp++ = 'E';
        if (flag & P_PPWAIT)
                *cp++ = 'V';
        if ((flag & P_SYSTEM) || k->ki_p->ki_lock > 0)
                *cp++ = 'L';
        if ((k->ki_p->ki_cr_flags & KI_CRF_CAPABILITY_MODE) != 0)
                *cp++ = 'C';
        if (k->ki_p->ki_kiflag & KI_SLEADER)
                *cp++ = 's';
        if ((flag & P_CONTROLT) && k->ki_p->ki_pgid == k->ki_p->ki_tpgid)
                *cp++ = '+';
        if (flag & P_JAILED)
                *cp++ = 'J';
        *cp = '\0';
        return (buf);
}

#define scalepri(x)     ((x) - PUSER)

char *
pri(KINFO *k, VARENT *ve __unused)
{
        char *str;

        asprintf(&str, "%d", scalepri(k->ki_p->ki_pri.pri_level));
        return (str);
}

char *
upr(KINFO *k, VARENT *ve __unused)
{
        char *str;

        asprintf(&str, "%d", scalepri(k->ki_p->ki_pri.pri_user));
        return (str);
}
#undef scalepri

char *
username(KINFO *k, VARENT *ve __unused)
{

        return (strdup(user_from_uid(k->ki_p->ki_uid, 0)));
}

char *
egroupname(KINFO *k, VARENT *ve __unused)
{

        return (strdup(group_from_gid(k->ki_p->ki_groups[0], 0)));
}

char *
rgroupname(KINFO *k, VARENT *ve __unused)
{

        return (strdup(group_from_gid(k->ki_p->ki_rgid, 0)));
}

char *
runame(KINFO *k, VARENT *ve __unused)
{

        return (strdup(user_from_uid(k->ki_p->ki_ruid, 0)));
}

char *
tdev(KINFO *k, VARENT *ve __unused)
{
        dev_t dev;
        char *str;

        dev = k->ki_p->ki_tdev;
        if (dev == NODEV)
                str = strdup("-");
        else
                asprintf(&str, "%#jx", (uintmax_t)dev);

        return (str);
}

char *
tname(KINFO *k, VARENT *ve __unused)
{
        dev_t dev;
        char *ttname, *str;

        dev = k->ki_p->ki_tdev;
        if (dev == NODEV || (ttname = devname(dev, S_IFCHR)) == NULL)
                str = strdup("- ");
        else {
                if (strncmp(ttname, "tty", 3) == 0 ||
                    strncmp(ttname, "cua", 3) == 0)
                        ttname += 3;
                if (strncmp(ttname, "pts/", 4) == 0)
                        ttname += 4;
                asprintf(&str, "%s%c", ttname,
                    k->ki_p->ki_kiflag & KI_CTTY ? ' ' : '-');
        }

        return (str);
}

char *
longtname(KINFO *k, VARENT *ve __unused)
{
        dev_t dev;
        const char *ttname;

        dev = k->ki_p->ki_tdev;
        if (dev == NODEV || (ttname = devname(dev, S_IFCHR)) == NULL)
                ttname = "-";

        return (strdup(ttname));
}

char *
started(KINFO *k, VARENT *ve __unused)
{
        time_t then;
        struct tm *tp;
        size_t buflen = 100;
        char *buf;

        if (!k->ki_valid)
                return (NULL);

        buf = malloc(buflen);
        if (buf == NULL)
                xo_errx(1, "malloc failed");

        then = k->ki_p->ki_start.tv_sec;
        tp = localtime(&then);
        if (now - k->ki_p->ki_start.tv_sec < 24 * 3600) {
                (void)strftime(buf, buflen, "%H:%M  ", tp);
        } else if (now - k->ki_p->ki_start.tv_sec < 7 * 86400) {
                (void)strftime(buf, buflen, "%a%H  ", tp);
        } else
                (void)strftime(buf, buflen, "%e%b%y", tp);
        return (buf);
}

char *
lstarted(KINFO *k, VARENT *ve __unused)
{
        time_t then;
        char *buf;
        size_t buflen = 100;

        if (!k->ki_valid)
                return (NULL);

        buf = malloc(buflen);
        if (buf == NULL)
                xo_errx(1, "malloc failed");

        then = k->ki_p->ki_start.tv_sec;
        (void)strftime(buf, buflen, "%c", localtime(&then));
        return (buf);
}

char *
lockname(KINFO *k, VARENT *ve __unused)
{
        char *str;

        if (k->ki_p->ki_kiflag & KI_LOCKBLOCK) {
                if (k->ki_p->ki_lockname[0] != 0)
                        str = strdup(k->ki_p->ki_lockname);
                else
                        str = strdup("???");
        } else
                str = NULL;

        return (str);
}

char *
wchan(KINFO *k, VARENT *ve __unused)
{
        char *str;

        if (k->ki_p->ki_wchan) {
                if (k->ki_p->ki_wmesg[0] != 0)
                        str = strdup(k->ki_p->ki_wmesg);
                else
                        asprintf(&str, "%lx", (long)k->ki_p->ki_wchan);
        } else
                str = NULL;

        return (str);
}

char *
nwchan(KINFO *k, VARENT *ve __unused)
{
        char *str;

        if (k->ki_p->ki_wchan)
                asprintf(&str, "%0lx", (long)k->ki_p->ki_wchan);
        else
                str = NULL;

        return (str);
}

char *
mwchan(KINFO *k, VARENT *ve __unused)
{
        char *str;

        if (k->ki_p->ki_wchan) {
                if (k->ki_p->ki_wmesg[0] != 0)
                        str = strdup(k->ki_p->ki_wmesg);
                else
                        asprintf(&str, "%lx", (long)k->ki_p->ki_wchan);
        } else if (k->ki_p->ki_kiflag & KI_LOCKBLOCK) {
                if (k->ki_p->ki_lockname[0]) {
                        str = strdup(k->ki_p->ki_lockname);
                } else
                        str = strdup("???");
        } else
                str = NULL;

        return (str);
}

char *
vsize(KINFO *k, VARENT *ve __unused)
{
        char *str;

        asprintf(&str, "%lu", (u_long)(k->ki_p->ki_size / 1024));
        return (str);
}

static char *
printtime(KINFO *k, VARENT *ve __unused, long secs, long psecs)
/* psecs is "parts" of a second. first micro, then centi */
{
        static char decimal_point;
        char *str;

        if (decimal_point == '\0')
                decimal_point = localeconv()->decimal_point[0];
        if (!k->ki_valid) {
                secs = 0;
                psecs = 0;
        } else {
                /* round and scale to 100's */
                psecs = (psecs + 5000) / 10000;
                secs += psecs / 100;
                psecs = psecs % 100;
        }
        asprintf(&str, "%ld:%02ld%c%02ld",
            secs / 60, secs % 60, decimal_point, psecs);
        return (str);
}

char *
cputime(KINFO *k, VARENT *ve)
{
        long secs, psecs;

        /*
         * This counts time spent handling interrupts.  We could
         * fix this, but it is not 100% trivial (and interrupt
         * time fractions only work on the sparc anyway).       XXX
         */
        secs = k->ki_p->ki_runtime / 1000000;
        psecs = k->ki_p->ki_runtime % 1000000;
        if (sumrusage) {
                secs += k->ki_p->ki_childtime.tv_sec;
                psecs += k->ki_p->ki_childtime.tv_usec;
        }
        return (printtime(k, ve, secs, psecs));
}

char *
cpunum(KINFO *k, VARENT *ve __unused)
{
        char *cpu;

        if (k->ki_p->ki_stat == SRUN && k->ki_p->ki_oncpu != NOCPU) {
                asprintf(&cpu, "%d", k->ki_p->ki_oncpu);
        } else {
                asprintf(&cpu, "%d", k->ki_p->ki_lastcpu);
        }
        return (cpu);
}

char *
systime(KINFO *k, VARENT *ve)
{
        long secs, psecs;

        secs = k->ki_p->ki_rusage.ru_stime.tv_sec;
        psecs = k->ki_p->ki_rusage.ru_stime.tv_usec;
        if (sumrusage) {
                secs += k->ki_p->ki_childstime.tv_sec;
                psecs += k->ki_p->ki_childstime.tv_usec;
        }
        return (printtime(k, ve, secs, psecs));
}

char *
usertime(KINFO *k, VARENT *ve)
{
        long secs, psecs;

        secs = k->ki_p->ki_rusage.ru_utime.tv_sec;
        psecs = k->ki_p->ki_rusage.ru_utime.tv_usec;
        if (sumrusage) {
                secs += k->ki_p->ki_childutime.tv_sec;
                psecs += k->ki_p->ki_childutime.tv_usec;
        }
        return (printtime(k, ve, secs, psecs));
}

char *
elapsed(KINFO *k, VARENT *ve __unused)
{
        time_t val;
        int days, hours, mins, secs;
        char *str;

        if (!k->ki_valid)
                return (NULL);
        val = now - k->ki_p->ki_start.tv_sec;
        days = val / (24 * 60 * 60);
        val %= 24 * 60 * 60;
        hours = val / (60 * 60);
        val %= 60 * 60;
        mins = val / 60;
        secs = val % 60;
        if (days != 0)
                asprintf(&str, "%3d-%02d:%02d:%02d", days, hours, mins, secs);
        else if (hours != 0)
                asprintf(&str, "%02d:%02d:%02d", hours, mins, secs);
        else
                asprintf(&str, "%02d:%02d", mins, secs);

        return (str);
}

char *
elapseds(KINFO *k, VARENT *ve __unused)
{
        time_t val;
        char *str;

        if (!k->ki_valid)
                return (NULL);
        val = now - k->ki_p->ki_start.tv_sec;
        asprintf(&str, "%jd", (intmax_t)val);
        return (str);
}

double
getpcpu(const KINFO *k)
{
        static int failure;

        if (!nlistread)
                failure = donlist();
        if (failure)
                return (0.0);

#define fxtofl(fixpt)   ((double)(fixpt) / fscale)

        /* XXX - I don't like this */
        if (k->ki_p->ki_swtime == 0)
                return (0.0);
        if (rawcpu)
                return (100.0 * fxtofl(k->ki_p->ki_pctcpu));
        return (100.0 * fxtofl(k->ki_p->ki_pctcpu) /
                (1.0 - exp(k->ki_p->ki_swtime * log(fxtofl(ccpu)))));
}

char *
pcpu(KINFO *k, VARENT *ve __unused)
{
        char *str;

        asprintf(&str, "%.1f", getpcpu(k));
        return (str);
}

static double
getpmem(KINFO *k)
{
        static int failure;
        double fracmem;

        if (!nlistread)
                failure = donlist();
        if (failure)
                return (0.0);

        /* XXX want pmap ptpages, segtab, etc. (per architecture) */
        /* XXX don't have info about shared */
        fracmem = ((double)k->ki_p->ki_rssize) / mempages;
        return (100.0 * fracmem);
}

char *
pmem(KINFO *k, VARENT *ve __unused)
{
        char *str;

        asprintf(&str, "%.1f", getpmem(k));
        return (str);
}

char *
pagein(KINFO *k, VARENT *ve __unused)
{
        char *str;

        asprintf(&str, "%ld", k->ki_valid ? k->ki_p->ki_rusage.ru_majflt : 0);
        return (str);
}

/* ARGSUSED */
char *
maxrss(KINFO *k __unused, VARENT *ve __unused)
{

        /* XXX not yet */
        return (NULL);
}

char *
priorityr(KINFO *k, VARENT *ve __unused)
{
        struct priority *lpri;
        char *str;
        unsigned class, level;

        lpri = &k->ki_p->ki_pri;
        class = lpri->pri_class;
        level = lpri->pri_level;
        switch (class) {
        case RTP_PRIO_REALTIME:
        /* alias for PRI_REALTIME */
                asprintf(&str, "real:%u", level - PRI_MIN_REALTIME);
                break;
        case RTP_PRIO_NORMAL:
        /* alias for PRI_TIMESHARE */
                if (level >= PRI_MIN_TIMESHARE)
                        asprintf(&str, "normal:%u", level - PRI_MIN_TIMESHARE);
                else
                        asprintf(&str, "kernel:%u", level - PRI_MIN_KERN);
                break;
        case RTP_PRIO_IDLE:
        /* alias for PRI_IDLE */
                asprintf(&str, "idle:%u", level - PRI_MIN_IDLE);
                break;
        case RTP_PRIO_ITHD:
        /* alias for PRI_ITHD */
                asprintf(&str, "intr:%u", level - PRI_MIN_ITHD);
                break;
        default:
                asprintf(&str, "%u:%u", class, level);
                break;
        }
        return (str);
}

/*
 * Generic output routines.  Print fields from various prototype
 * structures.
 */
static char *
printval(void *bp, const VAR *v)
{
        static char ofmt[32] = "%";
        const char *fcp;
        char *cp, *str;

        cp = ofmt + 1;
        fcp = v->fmt;
        while ((*cp++ = *fcp++));

#define CHKINF127(n)    (((n) > 127) && (v->flag & INF127) ? 127 : (n))

        switch (v->type) {
        case UNSPEC:
                xo_errx(1, "cannot print value of unspecified type "
                    "(internal error)");
                break;
        case CHAR:
                (void)asprintf(&str, ofmt, *(char *)bp);
                break;
        case SCHAR:
                (void)asprintf(&str, ofmt, *(signed char *)bp);
                break;
        case UCHAR:
                (void)asprintf(&str, ofmt, *(u_char *)bp);
                break;
        case SHORT:
                (void)asprintf(&str, ofmt, *(short *)bp);
                break;
        case USHORT:
                (void)asprintf(&str, ofmt, *(u_short *)bp);
                break;
        case INT:
                (void)asprintf(&str, ofmt, *(int *)bp);
                break;
        case UINT:
                (void)asprintf(&str, ofmt, CHKINF127(*(u_int *)bp));
                break;
        case LONG:
                (void)asprintf(&str, ofmt, *(long *)bp);
                break;
        case ULONG:
                (void)asprintf(&str, ofmt, *(u_long *)bp);
                break;
        case KPTR:
                (void)asprintf(&str, ofmt, *(u_long *)bp);
                break;
        case PGTOK:
                (void)asprintf(&str, ofmt, ps_pgtok(*(u_long *)bp));
                break;
        default:
                xo_errx(1, "unknown type (internal error)");
                break;
        }

        return (str);
}

char *
kvar(KINFO *k, VARENT *ve)
{
        const VAR *v;

        v = ve->var;
        return (printval((char *)((char *)k->ki_p + v->off), v));
}

char *
rvar(KINFO *k, VARENT *ve)
{
        const VAR *v;

        v = ve->var;
        if (!k->ki_valid)
                return (NULL);
        return (printval((char *)((char *)(&k->ki_p->ki_rusage) + v->off), v));
}

char *
emulname(KINFO *k, VARENT *ve __unused)
{

        return (strdup(k->ki_p->ki_emul));
}

char *
label(KINFO *k, VARENT *ve __unused)
{
        char *string;
        mac_t proclabel;
        int error;

        string = NULL;
        if (mac_prepare_process_label(&proclabel) == -1) {
                xo_warn("mac_prepare_process_label");
                goto out;
        }
        error = mac_get_pid(k->ki_p->ki_pid, proclabel);
        if (error == 0) {
                if (mac_to_text(proclabel, &string) == -1)
                        string = NULL;
        }
        mac_free(proclabel);
out:
        return (string);
}

char *
loginclass(KINFO *k, VARENT *ve __unused)
{

        /*
         * Don't display login class for system processes;
         * login classes are used for resource limits,
         * and limits don't apply to system processes.
         */
        if (k->ki_p->ki_flag & P_SYSTEM) {
                return (strdup("-"));
        }
        return (strdup(k->ki_p->ki_loginclass));
}

char *
jailname(KINFO *k, VARENT *ve __unused)
{
        char *name;

        if (k->ki_p->ki_jid == 0)
                return (strdup("-"));
        name = jail_getname(k->ki_p->ki_jid);
        if (name == NULL)
                return (strdup("-"));
        return (name);
}