#ifndef __SYMBIAN32__

// watch.c - login/logout watching

//

// © Portions Copyright (c) Symbian Software Ltd 2007. All rights reserved.

//

/*

 * This file is part of zsh, the Z shell.

 *

 * Copyright (c) 1992-1997 Paul Falstad

 * All rights reserved.

 *

 * Permission is hereby granted, without written agreement and without

 * license or royalty fees, to use, copy, modify, and distribute this

 * software and to distribute modified versions of this software for any

 * purpose, provided that the above copyright notice and the following

 * two paragraphs appear in all copies of this software.

 *

 * In no event shall Paul Falstad or the Zsh Development Group be liable

 * to any party for direct, indirect, special, incidental, or consequential

 * damages arising out of the use of this software and its documentation,

 * even if Paul Falstad and the Zsh Development Group have been advised of

 * the possibility of such damage.

 *

 * Paul Falstad and the Zsh Development Group specifically disclaim any

 * warranties, including, but not limited to, the implied warranties of

 * merchantability and fitness for a particular purpose.  The software

 * provided hereunder is on an "as is" basis, and Paul Falstad and the

 * Zsh Development Group have no obligation to provide maintenance,

 * support, updates, enhancements, or modifications.

 *

 */

#include "zsh.mdh"

/* Headers for utmp/utmpx structures */

#ifdef HAVE_UTMP_H

# include <utmp.h>

#endif

#ifdef HAVE_UTMPX_H

#ifndef __SYMBIAN32__

# include <utmpx.h> 

#endif//__SYMBIAN32__

#endif

#ifdef __SYMBIAN32__

#ifdef __WINSCW__

#pragma warn_unusedarg off

#pragma warn_possunwant off

#endif//__WINSCW__

#endif//__SYMBIAN32__

/* Find utmp file */

#if !defined(REAL_UTMP_FILE) && defined(UTMP_FILE)

# define REAL_UTMP_FILE UTMP_FILE

#endif

#if !defined(REAL_UTMP_FILE) && defined(_PATH_UTMP)

# define REAL_UTMP_FILE _PATH_UTMP

#endif

#if !defined(REAL_UTMP_FILE) && defined(PATH_UTMP_FILE)

# define REAL_UTMP_FILE PATH_UTMP_FILE

#endif

/* Find wtmp file */

#if !defined(REAL_WTMP_FILE) && defined(WTMP_FILE)

# define REAL_WTMP_FILE WTMP_FILE

#endif

#if !defined(REAL_WTMP_FILE) && defined(_PATH_WTMP)

# define REAL_WTMP_FILE _PATH_WTMP

#endif

#if !defined(REAL_WTMP_FILE) && defined(PATH_WTMP_FILE)

# define REAL_WTMP_FILE PATH_WTMP_FILE

#endif

/* Find utmpx file */

#if !defined(REAL_UTMPX_FILE) && defined(UTMPX_FILE)

# define REAL_UTMPX_FILE UTMPX_FILE

#endif

#if !defined(REAL_UTMPX_FILE) && defined(_PATH_UTMPX)

# define REAL_UTMPX_FILE _PATH_UTMPX

#endif

#if !defined(REAL_UTMPX_FILE) && defined(PATH_UTMPX_FILE)

# define REAL_UTMPX_FILE PATH_UTMPX_FILE

#endif

/* Find wtmpx file */

#if !defined(REAL_WTMPX_FILE) && defined(WTMPX_FILE)

# define REAL_WTMPX_FILE WTMPX_FILE

#endif

#if !defined(REAL_WTMPX_FILE) && defined(_PATH_WTMPX)

# define REAL_WTMPX_FILE _PATH_WTMPX

#endif

#if !defined(REAL_WTMPX_FILE) && defined(PATH_WTMPX_FILE)

# define REAL_WTMPX_FILE PATH_WTMPX_FILE

#endif

/* Decide which structure to use.  We use a structure that exists in *

 * the headers, and require that its corresponding utmp file exist.  *

 * (wtmp is less important.)                                         */

#if !defined(WATCH_STRUCT_UTMP) && defined(HAVE_STRUCT_UTMPX) && defined(REAL_UTMPX_FILE)

# define WATCH_STRUCT_UTMP struct utmpx

# ifdef HAVE_STRUCT_UTMPX_UT_XTIME

#  undef ut_time

#  define ut_time ut_xtime

# else /* !HAVE_STRUCT_UTMPX_UT_XTIME */

#  ifdef HAVE_STRUCT_UTMPX_UT_TV

#   undef ut_time

#   define ut_time ut_tv.tv_sec

#  endif /* HAVE_STRUCT_UTMPX_UT_TV */

# endif /* !HAVE_STRUCT_UTMPX_UT_XTIME */

# define WATCH_UTMP_FILE REAL_UTMPX_FILE

# ifdef REAL_WTMPX_FILE

#  define WATCH_WTMP_FILE REAL_WTMPX_FILE

# endif

# ifdef HAVE_STRUCT_UTMPX_UT_HOST

#  define WATCH_UTMP_UT_HOST 1

# endif

# ifdef __APPLE__

#  define ut_name ut_user

# endif

#endif

#if !defined(WATCH_STRUCT_UTMP) && defined(HAVE_STRUCT_UTMP) && defined(REAL_UTMP_FILE)

# define WATCH_STRUCT_UTMP struct utmp

# define WATCH_UTMP_FILE REAL_UTMP_FILE

# ifdef REAL_WTMP_FILE

#  define WATCH_WTMP_FILE REAL_WTMP_FILE

# endif

# ifdef HAVE_STRUCT_UTMP_UT_HOST

#  define WATCH_UTMP_UT_HOST 1

# endif

#endif

#ifdef WATCH_UTMP_UT_HOST

# define DEFAULT_WATCHFMT "%n has %a %l from %m."

#else /* !WATCH_UTMP_UT_HOST */

# define DEFAULT_WATCHFMT "%n has %a %l."

#endif /* !WATCH_UTMP_UT_HOST */

/**/

char const * const default_watchfmt = DEFAULT_WATCHFMT;

#ifdef WATCH_STRUCT_UTMP

# include "watch.pro"

# ifndef WATCH_WTMP_FILE

#  define WATCH_WTMP_FILE "/dev/null"

# endif

static int wtabsz;

static WATCH_STRUCT_UTMP *wtab;

static time_t lastutmpcheck;

/* get the time of login/logout for WATCH */

/**/

static time_t

getlogtime(WATCH_STRUCT_UTMP *u, int inout)

{

    FILE *in;

    WATCH_STRUCT_UTMP uu;

    int first = 1;

    int srchlimit = 50;		/* max number of wtmp records to search */

    if (inout)

	return u->ut_time;

    if (!(in = fopen(WATCH_WTMP_FILE, "r")))

	return time(NULL);

    fseek(in, 0, 2);

    do {

	if (fseek(in, ((first) ? -1 : -2) * sizeof(WATCH_STRUCT_UTMP), 1)) {

	    fclose(in);

	    return time(NULL);

	}

	first = 0;

	if (!fread(&uu, sizeof(WATCH_STRUCT_UTMP), 1, in)) {

	    fclose(in);

	    return time(NULL);

	}

	if (uu.ut_time < lastwatch || !srchlimit--) {

	    fclose(in);

	    return time(NULL);

	}

    }

    while (memcmp(&uu, u, sizeof(uu)));

    do

	if (!fread(&uu, sizeof(WATCH_STRUCT_UTMP), 1, in)) {

	    fclose(in);

	    return time(NULL);

	}

    while (strncmp(uu.ut_line, u->ut_line, sizeof(u->ut_line)));

    fclose(in);

    return uu.ut_time;

}

/* Mutually recursive call to handle ternaries in $WATCHFMT */

# define BEGIN3 '('

# define END3 ')'

/**/

static char *

watch3ary(int inout, WATCH_STRUCT_UTMP *u, char *fmt, int prnt)

{

    int truth = 1, sep;

    switch (*fmt++) {

    case 'n':

	truth = (u->ut_name[0] != 0);

	break;

    case 'a':

	truth = inout;

	break;

    case 'l':

	if (!strncmp(u->ut_line, "tty", 3))

	    truth = (u->ut_line[3] != 0);

	else

	    truth = (u->ut_line[0] != 0);

	break;

# ifdef WATCH_UTMP_UT_HOST

    case 'm':

    case 'M':

	truth = (u->ut_host[0] != 0);

	break;

# endif /* WATCH_UTMP_UT_HOST */

    default:

	prnt = 0;		/* Skip unknown conditionals entirely */

	break;

    }

    sep = *fmt++;

    fmt = watchlog2(inout, u, fmt, (truth && prnt), sep);

    return watchlog2(inout, u, fmt, (!truth && prnt), END3);

}

/* print a login/logout event */

/**/

static char *

watchlog2(int inout, WATCH_STRUCT_UTMP *u, char *fmt, int prnt, int fini)

{

    char buf[40], buf2[80];

    time_t timet;

    struct tm *tm;

    char *fm2;

# ifdef WATCH_UTMP_UT_HOST

    char *p;

    int i;

# endif /* WATCH_UTMP_UT_HOST */

    while (*fmt)

	if (*fmt == '\\') {

	    if (*++fmt) {

		if (prnt)

		    putchar(*fmt);

		++fmt;

	    } else if (fini)

		return fmt;

	    else

		break;

	}

	else if (*fmt == fini)

	    return ++fmt;

	else if (*fmt != '%') {

	    if (prnt)

		putchar(*fmt);

	    ++fmt;

	} else {

	    if (*++fmt == BEGIN3)

		fmt = watch3ary(inout, u, ++fmt, prnt);

	    else if (!prnt)

		++fmt;

	    else

		switch (*(fm2 = fmt++)) {

		case 'n':

		    printf("%.*s", (int)sizeof(u->ut_name), u->ut_name);

		    break;

		case 'a':

		    printf("%s", (!inout) ? "logged off" : "logged on");

		    break;

		case 'l':

		    if (!strncmp(u->ut_line, "tty", 3))

			printf("%.*s", (int)sizeof(u->ut_line) - 3, u->ut_line + 3);

		    else

			printf("%.*s", (int)sizeof(u->ut_line), u->ut_line);

		    break;

# ifdef WATCH_UTMP_UT_HOST

		case 'm':

		    for (p = u->ut_host, i = sizeof(u->ut_host); i && *p; i--, p++) {

			if (*p == '.' && !idigit(p[1]))

			    break;

			putchar(*p);

		    }

		    break;

		case 'M':

		    printf("%.*s", (int)sizeof(u->ut_host), u->ut_host);

		    break;

# endif /* WATCH_UTMP_UT_HOST */

		case 'T':

		case 't':

		case '@':

		case 'W':

		case 'w':

		case 'D':

		    switch (*fm2) {

		    case '@':

		    case 't':

			fm2 = "%l:%M%p";

			break;

		    case 'T':

			fm2 = "%K:%M";

			break;

		    case 'w':

			fm2 = "%a %f";

			break;

		    case 'W':

			fm2 = "%m/%d/%y";

			break;

		    case 'D':

			if (fm2[1] == '{') {

			    char *dd, *ss;

			    int n = 79;

			    for (ss = fm2 + 2, dd = buf2;

				 n-- && *ss && *ss != '}'; ++ss, ++dd)

				*dd = *((*ss == '\\' && ss[1]) ? ++ss : ss);

			    if (*ss == '}') {

				*dd = '\0';

				fmt = ss + 1;

				fm2 = buf2;

			    }

			    else fm2 = "%y-%m-%d";

			}

			else fm2 = "%y-%m-%d";

			break;

		    }

		    timet = getlogtime(u, inout);

		    tm = localtime(&timet);

		    ztrftime(buf, 40, fm2, tm);

		    printf("%s", (*buf == ' ') ? buf + 1 : buf);

		    break;

		case '%':

		    putchar('%');

		    break;

		case 'S':

		    txtset(TXTSTANDOUT);

		    tsetcap(TCSTANDOUTBEG, -1);

		    break;

		case 's':

		    txtset(TXTDIRTY);

		    txtunset(TXTSTANDOUT);

		    tsetcap(TCSTANDOUTEND, -1);

		    break;

		case 'B':

		    txtset(TXTDIRTY);

		    txtset(TXTBOLDFACE);

		    tsetcap(TCBOLDFACEBEG, -1);

		    break;

		case 'b':

		    txtset(TXTDIRTY);

		    txtunset(TXTBOLDFACE);

		    tsetcap(TCALLATTRSOFF, -1);

		    break;

		case 'U':

		    txtset(TXTUNDERLINE);

		    tsetcap(TCUNDERLINEBEG, -1);

		    break;

		case 'u':

		    txtset(TXTDIRTY);

		    txtunset(TXTUNDERLINE);

		    tsetcap(TCUNDERLINEEND, -1);

		    break;

		default:

		    putchar('%');

		    putchar(*fm2);

		    break;

		}

	}

    if (prnt)

	putchar('\n');

    return fmt;

}

/* check the List for login/logouts */

/**/

static void

watchlog(int inout, WATCH_STRUCT_UTMP *u, char **w, char *fmt)

{

    char *v, *vv, sav;

    int bad;

    if (!*u->ut_name)

	return;

    if (*w && !strcmp(*w, "all")) {

	(void)watchlog2(inout, u, fmt, 1, 0);

	return;

    }

    if (*w && !strcmp(*w, "notme") &&

	strncmp(u->ut_name, get_username(), sizeof(u->ut_name))) {

	(void)watchlog2(inout, u, fmt, 1, 0);

	return;

    }

    for (; *w; w++) {

	bad = 0;

	v = *w;

	if (*v != '@' && *v != '%') {

	    for (vv = v; *vv && *vv != '@' && *vv != '%'; vv++);

	    sav = *vv;

	    *vv = '\0';

	    if (strncmp(u->ut_name, v, sizeof(u->ut_name)))

		bad = 1;

	    *vv = sav;

	    v = vv;

	}

	for (;;)

	    if (*v == '%') {

		for (vv = ++v; *vv && *vv != '@'; vv++);

		sav = *vv;

		*vv = '\0';

		if (strncmp(u->ut_line, v, sizeof(u->ut_line)))

		    bad = 1;

		*vv = sav;

		v = vv;

	    }

# ifdef WATCH_UTMP_UT_HOST

	    else if (*v == '@') {

		for (vv = ++v; *vv && *vv != '%'; vv++);

		sav = *vv;

		*vv = '\0';

		if (strncmp(u->ut_host, v, strlen(v)))

		    bad = 1;

		*vv = sav;

		v = vv;

	    }

# endif /* WATCH_UTMP_UT_HOST */

	    else

		break;

	if (!bad) {

	    (void)watchlog2(inout, u, fmt, 1, 0);

	    return;

	}

    }

}

/* compare 2 utmp entries */

/**/

static int

ucmp(WATCH_STRUCT_UTMP *u, WATCH_STRUCT_UTMP *v)

{

    if (u->ut_time == v->ut_time)

	return strncmp(u->ut_line, v->ut_line, sizeof(u->ut_line));

    return u->ut_time - v->ut_time;

}

/* initialize the user List */

/**/

static void

readwtab(void)

{

    WATCH_STRUCT_UTMP *uptr;

    int wtabmax = 32;

    FILE *in;

    wtabsz = 0;

    if (!(in = fopen(WATCH_UTMP_FILE, "r")))

	return;

    uptr = wtab = (WATCH_STRUCT_UTMP *)zalloc(wtabmax * sizeof(WATCH_STRUCT_UTMP));

    while (fread(uptr, sizeof(WATCH_STRUCT_UTMP), 1, in))

# ifdef USER_PROCESS

	if   (uptr->ut_type == USER_PROCESS)

# else /* !USER_PROCESS */

	if   (uptr->ut_name[0])

# endif /* !USER_PROCESS */

	{

	    uptr++;

	    if (++wtabsz == wtabmax)

		uptr = (wtab = (WATCH_STRUCT_UTMP *)realloc((void *) wtab, (wtabmax *= 2) *

						      sizeof(WATCH_STRUCT_UTMP))) + wtabsz;

	}

    fclose(in);

    if (wtabsz)

	qsort((void *) wtab, wtabsz, sizeof(WATCH_STRUCT_UTMP),

	           (int (*) _((const void *, const void *)))ucmp);

}

/* Check for login/logout events; executed before *

 * each prompt if WATCH is set                    */

/**/

void

dowatch(void)

{

    FILE *in;

    WATCH_STRUCT_UTMP *utab, *uptr, *wptr;

    struct stat st;

    char **s;

    char *fmt;

    int utabsz = 0, utabmax = wtabsz + 4;

    int uct, wct;

    s = watch;

    holdintr();

    if (!wtab) {

	readwtab();

	noholdintr();

	return;

    }

    if ((stat(WATCH_UTMP_FILE, &st) == -1) || (st.st_mtime <= lastutmpcheck)) {

	noholdintr();

	return;

    }

    lastutmpcheck = st.st_mtime;

    uptr = utab = (WATCH_STRUCT_UTMP *) zalloc(utabmax * sizeof(WATCH_STRUCT_UTMP));

    if (!(in = fopen(WATCH_UTMP_FILE, "r"))) {

	free(utab);

	noholdintr();

	return;

    }

    while (fread(uptr, sizeof *uptr, 1, in))

# ifdef USER_PROCESS