rxvt-unicode/src/init.C

/*--------------------------------*-C-*---------------------------------*
 * File:        init.c
 *----------------------------------------------------------------------*
 * $Id: init.C,v 1.2 2003/11/24 17:31:27 pcg Exp $
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (c) 1992      John Bovey, University of Kent at Canterbury <jdb@ukc.ac.uk>
 *                              - original version
 * Copyright (c) 1994      Robert Nation <nation@rocket.sanders.lockheed.com>
 *                              - extensive modifications
 * Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com>
 *                              - extensive modifications
 * Copyright (c) 1999      D J Hawkey Jr <hawkeyd@visi.com>
 *                              - QNX support
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *---------------------------------------------------------------------*/
/*
 * Initialisation routines.
 */

#include "../config.h"          /* NECESSARY */
#include "rxvt.h"               /* NECESSARY */
#include "init.h"

#include <signal.h>

const char *const def_colorName[] = {
    COLOR_FOREGROUND,
    COLOR_BACKGROUND,
/* low-intensity colors */
    "Black",                    /* 0: black             (#000000) */
#ifndef NO_BRIGHTCOLOR
    "Red3",                     /* 1: red               (#CD0000) */
    "Green3",                   /* 2: green             (#00CD00) */
    "Yellow3",                  /* 3: yellow            (#CDCD00) */
    "Blue3",                    /* 4: blue              (#0000CD) */
    "Magenta3",                 /* 5: magenta           (#CD00CD) */
    "Cyan3",                    /* 6: cyan              (#00CDCD) */
# ifdef XTERM_COLORS
    "Grey90",                   /* 7: white             (#E5E5E5) */
# else
    "AntiqueWhite",             /* 7: white             (#FAEBD7) */
# endif
/* high-intensity colors */
# ifdef XTERM_COLORS
    "Grey30",                   /* 8: bright black      (#4D4D4D) */
# else
    "Grey25",                   /* 8: bright black      (#404040) */
# endif
#endif                          /* NO_BRIGHTCOLOR */
    "Red",                      /* 1/9: bright red      (#FF0000) */
    "Green",                    /* 2/10: bright green   (#00FF00) */
    "Yellow",                   /* 3/11: bright yellow  (#FFFF00) */
    "Blue",                     /* 4/12: bright blue    (#0000FF) */
    "Magenta",                  /* 5/13: bright magenta (#FF00FF) */
    "Cyan",                     /* 6/14: bright cyan    (#00FFFF) */
    "White",                    /* 7/15: bright white   (#FFFFFF) */
#ifdef TTY_256COLOR
    "rgb:00/00/00",             /* default 16-255 color table     */
    "rgb:00/00/2a",
    "rgb:00/00/55",
    "rgb:00/00/7f",
    "rgb:00/00/aa",
    "rgb:00/00/d4",
    "rgb:00/2a/00",
    "rgb:00/2a/2a",
    "rgb:00/2a/55",
    "rgb:00/2a/7f",
    "rgb:00/2a/aa",
    "rgb:00/2a/d4",
    "rgb:00/55/00",
    "rgb:00/55/2a",
    "rgb:00/55/55",
    "rgb:00/55/7f",
    "rgb:00/55/aa",
    "rgb:00/55/d4",
    "rgb:00/7f/00",
    "rgb:00/7f/2a",
    "rgb:00/7f/55",
    "rgb:00/7f/7f",
    "rgb:00/7f/aa",
    "rgb:00/7f/d4",
    "rgb:00/aa/00",
    "rgb:00/aa/2a",
    "rgb:00/aa/55",
    "rgb:00/aa/7f",
    "rgb:00/aa/aa",
    "rgb:00/aa/d4",
    "rgb:00/d4/00",
    "rgb:00/d4/2a",
    "rgb:00/d4/55",
    "rgb:00/d4/7f",
    "rgb:00/d4/aa",
    "rgb:00/d4/d4",
    "rgb:2a/00/00",
    "rgb:2a/00/2a",
    "rgb:2a/00/55",
    "rgb:2a/00/7f",
    "rgb:2a/00/aa",
    "rgb:2a/00/d4",
    "rgb:2a/2a/00",
    "rgb:2a/2a/2a",
    "rgb:2a/2a/55",
    "rgb:2a/2a/7f",
    "rgb:2a/2a/aa",
    "rgb:2a/2a/d4",
    "rgb:2a/55/00",
    "rgb:2a/55/2a",
    "rgb:2a/55/55",
    "rgb:2a/55/7f",
    "rgb:2a/55/aa",
    "rgb:2a/55/d4",
    "rgb:2a/7f/00",
    "rgb:2a/7f/2a",
    "rgb:2a/7f/55",
    "rgb:2a/7f/7f",
    "rgb:2a/7f/aa",
    "rgb:2a/7f/d4",
    "rgb:2a/aa/00",
    "rgb:2a/aa/2a",
    "rgb:2a/aa/55",
    "rgb:2a/aa/7f",
    "rgb:2a/aa/aa",
    "rgb:2a/aa/d4",
    "rgb:2a/d4/00",
    "rgb:2a/d4/2a",
    "rgb:2a/d4/55",
    "rgb:2a/d4/7f",
    "rgb:2a/d4/aa",
    "rgb:2a/d4/d4",
    "rgb:55/00/00",
    "rgb:55/00/2a",
    "rgb:55/00/55",
    "rgb:55/00/7f",
    "rgb:55/00/aa",
    "rgb:55/00/d4",
    "rgb:55/2a/00",
    "rgb:55/2a/2a",
    "rgb:55/2a/55",
    "rgb:55/2a/7f",
    "rgb:55/2a/aa",
    "rgb:55/2a/d4",
    "rgb:55/55/00",
    "rgb:55/55/2a",
    "rgb:55/55/55",
    "rgb:55/55/7f",
    "rgb:55/55/aa",
    "rgb:55/55/d4",
    "rgb:55/7f/00",
    "rgb:55/7f/2a",
    "rgb:55/7f/55",
    "rgb:55/7f/7f",
    "rgb:55/7f/aa",
    "rgb:55/7f/d4",
    "rgb:55/aa/00",
    "rgb:55/aa/2a",
    "rgb:55/aa/55",
    "rgb:55/aa/7f",
    "rgb:55/aa/aa",
    "rgb:55/aa/d4",
    "rgb:55/d4/00",
    "rgb:55/d4/2a",
    "rgb:55/d4/55",
    "rgb:55/d4/7f",
    "rgb:55/d4/aa",
    "rgb:55/d4/d4",
    "rgb:7f/00/00",
    "rgb:7f/00/2a",
    "rgb:7f/00/55",
    "rgb:7f/00/7f",
    "rgb:7f/00/aa",
    "rgb:7f/00/d4",
    "rgb:7f/2a/00",
    "rgb:7f/2a/2a",
    "rgb:7f/2a/55",
    "rgb:7f/2a/7f",
    "rgb:7f/2a/aa",
    "rgb:7f/2a/d4",
    "rgb:7f/55/00",
    "rgb:7f/55/2a",
    "rgb:7f/55/55",
    "rgb:7f/55/7f",
    "rgb:7f/55/aa",
    "rgb:7f/55/d4",
    "rgb:7f/7f/00",
    "rgb:7f/7f/2a",
    "rgb:7f/7f/55",
    "rgb:7f/7f/7f",
    "rgb:7f/7f/aa",
    "rgb:7f/7f/d4",
    "rgb:7f/aa/00",
    "rgb:7f/aa/2a",
    "rgb:7f/aa/55",
    "rgb:7f/aa/7f",
    "rgb:7f/aa/aa",
    "rgb:7f/aa/d4",
    "rgb:7f/d4/00",
    "rgb:7f/d4/2a",
    "rgb:7f/d4/55",
    "rgb:7f/d4/7f",
    "rgb:7f/d4/aa",
    "rgb:7f/d4/d4",
    "rgb:aa/00/00",
    "rgb:aa/00/2a",
    "rgb:aa/00/55",
    "rgb:aa/00/7f",
    "rgb:aa/00/aa",
    "rgb:aa/00/d4",
    "rgb:aa/2a/00",
    "rgb:aa/2a/2a",
    "rgb:aa/2a/55",
    "rgb:aa/2a/7f",
    "rgb:aa/2a/aa",
    "rgb:aa/2a/d4",
    "rgb:aa/55/00",
    "rgb:aa/55/2a",
    "rgb:aa/55/55",
    "rgb:aa/55/7f",
    "rgb:aa/55/aa",
    "rgb:aa/55/d4",
    "rgb:aa/7f/00",
    "rgb:aa/7f/2a",
    "rgb:aa/7f/55",
    "rgb:aa/7f/7f",
    "rgb:aa/7f/aa",
    "rgb:aa/7f/d4",
    "rgb:aa/aa/00",
    "rgb:aa/aa/2a",
    "rgb:aa/aa/55",
    "rgb:aa/aa/7f",
    "rgb:aa/aa/aa",
    "rgb:aa/aa/d4",
    "rgb:aa/d4/00",
    "rgb:aa/d4/2a",
    "rgb:aa/d4/55",
    "rgb:aa/d4/7f",
    "rgb:aa/d4/aa",
    "rgb:aa/d4/d4",
    "rgb:d4/00/00",
    "rgb:d4/00/2a",
    "rgb:d4/00/55",
    "rgb:d4/00/7f",
    "rgb:d4/00/aa",
    "rgb:d4/00/d4",
    "rgb:d4/2a/00",
    "rgb:d4/2a/2a",
    "rgb:d4/2a/55",
    "rgb:d4/2a/7f",
    "rgb:d4/2a/aa",
    "rgb:d4/2a/d4",
    "rgb:d4/55/00",
    "rgb:d4/55/2a",
    "rgb:d4/55/55",
    "rgb:d4/55/7f",
    "rgb:d4/55/aa",
    "rgb:d4/55/d4",
    "rgb:d4/7f/00",
    "rgb:d4/7f/2a",
    "rgb:d4/7f/55",
    "rgb:d4/7f/7f",
    "rgb:d4/7f/aa",
    "rgb:d4/7f/d4",
    "rgb:d4/aa/00",
    "rgb:d4/aa/2a",
    "rgb:d4/aa/55",
    "rgb:d4/aa/7f",
    "rgb:d4/aa/aa",
    "rgb:d4/aa/d4",
    "rgb:d4/d4/00",
    "rgb:d4/d4/2a",
    "rgb:d4/d4/55",
    "rgb:d4/d4/7f",
    "rgb:d4/d4/aa",
    "rgb:d4/d4/d4",
    "rgb:08/08/08",
    "rgb:12/12/12",
    "rgb:1c/1c/1c",
    "rgb:26/26/26",
    "rgb:30/30/30",
    "rgb:3a/3a/3a",
    "rgb:44/44/44",
    "rgb:4e/4e/4e",
    "rgb:58/58/58",
    "rgb:62/62/62",
    "rgb:6c/6c/6c",
    "rgb:76/76/76",
    "rgb:80/80/80",
    "rgb:8a/8a/8a",
    "rgb:94/94/94",
    "rgb:9e/9e/9e",
    "rgb:a8/a8/a8",
    "rgb:b2/b2/b2",
    "rgb:bc/bc/bc",
    "rgb:c6/c6/c6",
    "rgb:d0/d0/d0",
    "rgb:da/da/da",
    "rgb:e4/e4/e4",
    "rgb:ee/ee/ee",
#endif
#ifndef NO_CURSORCOLOR
    COLOR_CURSOR_BACKGROUND,
    COLOR_CURSOR_FOREGROUND,
#endif                          /* ! NO_CURSORCOLOR */
    NULL,                       /* Color_pointer                  */
    NULL,                       /* Color_border                   */
#ifndef NO_BOLD_UNDERLINE_REVERSE
    NULL,                       /* Color_BD                       */
    NULL,                       /* Color_UL                       */
    NULL,                       /* Color_RV                       */
#endif                          /* ! NO_BOLD_UNDERLINE_REVERSE */
#ifdef OPTION_HC
    NULL,
#endif
#ifdef KEEP_SCROLLCOLOR
    COLOR_SCROLLBAR,
    COLOR_SCROLLTROUGH,
#endif                          /* KEEP_SCROLLCOLOR */
};

const char *const xa_names[NUM_XA] = {
    "COMPOUND_TEXT",
    "MULTIPLE", 
    "TARGETS",  
    "TEXT",
    "TIMESTAMP",
    "VT_SELECTION",
    "INCR",
    "WM_DELETE_WINDOW",
#ifdef TRANSPARENT
    "_XROOTPMAP_ID",
#endif
#ifdef OFFIX_DND
    "DndProtocol",
    "DndSelection",
#endif
    "CLIPBOARD"
};

/*----------------------------------------------------------------------*/
/* substitute system functions */
#if defined(__svr4__) && ! defined(_POSIX_VERSION)
/* INTPROTO */
int
rxvt_getdtablesize(void)
{
    struct rlimit   rlim;

    getrlimit(RLIMIT_NOFILE, &rlim);
    return rlim.rlim_cur;
}
#endif
/*----------------------------------------------------------------------*/
/* EXTPROTO */
int
rxvt_init_vars(pR)
{
    R->PixColors = (rxvt_color *)rxvt_malloc(sizeof(rxvt_color) * TOTAL_COLORS);
    if (R->PixColors == NULL)
        return -1;

#if defined(XPM_BACKGROUND) || defined(TRANSPARENT)
    R->TermWin.pixmap = None;
#endif
#ifdef UTMP_SUPPORT
    R->next_utmp_action = SAVE;
#endif
#ifndef NO_SETOWNER_TTYDEV
    R->next_tty_action = SAVE;
#endif
    R->MEvent.time = CurrentTime;
    R->MEvent.button = AnyButton;
    R->Options = DEFAULT_OPTIONS;
    R->want_refresh = 1;
    R->cmd_pid = -1;
    R->cmd_fd = R->tty_fd = R->Xfd = -1;
    R->PrivateModes = R->SavedModes = PrivMode_Default;
    R->TermWin.focus = 1;
    R->TermWin.ncol = 80;
    R->TermWin.nrow = 24;
    R->TermWin.int_bwidth = INTERNALBORDERWIDTH;
    R->TermWin.ext_bwidth = EXTERNALBORDERWIDTH;
    R->TermWin.lineSpace = LINESPACE;
    R->TermWin.saveLines = SAVELINES;
    R->numPixColors = TOTAL_COLORS;
#ifndef NO_NEW_SELECTION
    R->selection_style = NEW_SELECT;
#else
    R->selection_style = OLD_SELECT;
#endif
#ifndef NO_BRIGHTCOLOR
    R->colorfgbg = DEFAULT_RSTYLE;
#endif
#if defined (HOTKEY_CTRL) || defined (HOTKEY_META)
    R->ks_bigfont = XK_greater;
    R->ks_smallfont = XK_less;
#endif
#ifdef GREEK_SUPPORT
    R->ks_greekmodeswith = GREEK_KEYBOARD_MODESWITCH;
#endif
    R->refresh_limit = 1;
    R->refresh_type = SLOW_REFRESH;
    R->prev_nrow = R->prev_ncol = 0;
#ifdef MULTICHAR_SET
# ifdef MULTICHAR_ENCODING
    R->encoding_method = MULTICHAR_ENCODING;
# endif
    R->multichar_decode = rxvt_euc2jis;
#endif
    R->oldcursor.row = R->oldcursor.col = -1;
#ifdef XPM_BACKGROUND
/*  R->bgPixmap.w = R->bgPixmap.h = 0; */
    R->bgPixmap.x = R->bgPixmap.y = 50;
    R->bgPixmap.pixmap = None;
#endif
    R->last_bot = R->last_state = -1;
#ifdef MENUBAR
    R->menu_readonly = 1;
# if !(MENUBAR_MAX > 1)
    R->CurrentBar = &(R->BarList);
# endif                         /* (MENUBAR_MAX > 1) */
#endif
    return 0;
}

/* EXTPROTO */
void
rxvt_init_secondary(pR)
{
    int             i;
#ifdef TTY_GID_SUPPORT
    struct group   *gr = getgrnam("tty");

    if (gr) {           /* change group ownership of tty to "tty" */
        R->ttymode = S_IRUSR | S_IWUSR | S_IWGRP;
        R->ttygid = gr->gr_gid;
    } else
#endif                          /* TTY_GID_SUPPORT */
    {
        R->ttymode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
        R->ttygid = getgid();
    }
#if defined(HAVE_XSETLOCALE) || defined(HAVE_SETLOCALE)
    R->locale = setlocale(LC_CTYPE, "");
#endif

/* get number of available file descriptors */
#if defined(_POSIX_VERSION) || ! defined(__svr4__)
    R->num_fds = (int)sysconf(_SC_OPEN_MAX);
#else
    R->num_fds = rxvt_getdtablesize();
#endif

/*
 * Close all unused file descriptors
 * We don't want them, we don't need them.
 */
    if ((i = open("/dev/null", O_RDONLY)) < 0) {
        /* TODO: BOO HISS */
        dup2(STDERR_FILENO, STDIN_FILENO);
    } else if (i > STDIN_FILENO) {
        dup2(i, STDIN_FILENO);
        close(i);
    }
    dup2(STDERR_FILENO, STDOUT_FILENO);
    for (i = STDERR_FILENO + 1; i < R->num_fds; i++) {
#ifdef __sgi                    /* Alex Coventry says we need 4 & 7 too */
        if (i == 4 || i == 7)
            continue;
#endif
        close(i);
    }
}

/*----------------------------------------------------------------------*/
/* EXTPROTO */
const char    **
rxvt_init_resources(pR_ int argc, const char *const *argv)
{
    int             i, r_argc;
    char           *val;
    const char    **cmd_argv, **r_argv;
    const char    **rs;

/*
 * Look for -exec option.  Find => split and make cmd_argv[] of command args
 */
    for (r_argc = 0; r_argc < argc; r_argc++)
        if (!STRCMP(argv[r_argc], "-e") || !STRCMP(argv[r_argc], "-exec"))
            break;
    r_argv = (const char **)rxvt_malloc(sizeof(char *) * (r_argc + 1));

    for (i = 0; i < r_argc; i++)
        r_argv[i] = (const char *)argv[i];
    r_argv[i] = NULL;
    if (r_argc == argc)
        cmd_argv = NULL;
    else {
        cmd_argv = (const char **)rxvt_malloc(sizeof(char *) * (argc - r_argc));

        for (i = 0; i < argc - r_argc - 1; i++)
            cmd_argv[i] = (const char *)argv[i + r_argc + 1];
        cmd_argv[i] = NULL;
    }

/* clear all resources */
    rs = R->rs;
    for (i = 0; i < NUM_RESOURCES;)
        rs[i++] = NULL;

    rs[Rs_name] = rxvt_r_basename(argv[0]);
/*
 * Open display, get options/resources and create the window
 */
    if ((rs[Rs_display_name] = getenv("DISPLAY")) == NULL)
        rs[Rs_display_name] = ":0";

    rxvt_get_options(aR_ r_argc, r_argv);
    free(r_argv);

#ifdef LOCAL_X_IS_UNIX
    if (rs[Rs_display_name][0] == ':') {
        val = rxvt_malloc(5 + STRLEN(rs[Rs_display_name]));
        STRCPY(val, "unix");
        STRCAT(val, rs[Rs_display_name]);
        R->Xdisplay = XOpenDisplay(val);
        free(val);
    }
#endif

    if (R->Xdisplay == NULL
        && (R->Xdisplay = XOpenDisplay(rs[Rs_display_name])) == NULL) {
        rxvt_print_error("can't open display %s", rs[Rs_display_name]);
        exit(EXIT_FAILURE);
    }

    rxvt_extract_resources(aR_ R->Xdisplay, rs[Rs_name]);

/*
 * set any defaults not already set
 */
    if (cmd_argv && cmd_argv[0]) {
        if (!rs[Rs_title])
            rs[Rs_title] = rxvt_r_basename(cmd_argv[0]);
        if (!rs[Rs_iconName])
            rs[Rs_iconName] = rs[Rs_title];
    } else {
        if (!rs[Rs_title])
            rs[Rs_title] = rs[Rs_name];
        if (!rs[Rs_iconName])
            rs[Rs_iconName] = rs[Rs_name];
    }
    if (rs[Rs_saveLines] && (i = atoi(rs[Rs_saveLines])) >= 0)
        R->TermWin.saveLines = BOUND_POSITIVE_INT16(i);
#ifndef NO_FRILLS
    if (rs[Rs_int_bwidth] && (i = atoi(rs[Rs_int_bwidth])) >= 0)
        R->TermWin.int_bwidth = min(i, 100);    /* arbitrary limit */
    if (rs[Rs_ext_bwidth] && (i = atoi(rs[Rs_ext_bwidth])) >= 0)
        R->TermWin.ext_bwidth = min(i, 100);    /* arbitrary limit */
#endif
#ifndef NO_LINESPACE
    if (rs[Rs_lineSpace] && (i = atoi(rs[Rs_lineSpace])) >= 0)
        R->TermWin.lineSpace = min(i, 100);     /* arbitrary limit */
#endif

#ifdef POINTER_BLANK
    if (rs[Rs_pointerBlankDelay] && (i = atoi(rs[Rs_pointerBlankDelay])) >= 0)
        R->pointerBlankDelay = i;
    else
        R->pointerBlankDelay = 2;
#endif

/* no point having a scrollbar without having any scrollback! */
    if (!R->TermWin.saveLines)
        R->Options &= ~Opt_scrollBar;

#ifdef PRINTPIPE
    if (!rs[Rs_print_pipe])
        rs[Rs_print_pipe] = PRINTPIPE;
#endif
    if (!rs[Rs_cutchars])
        rs[Rs_cutchars] = CUTCHARS;
#ifdef ACS_ASCII
    if (!rs[Rs_acs_chars])
        rs[Rs_acs_chars] = ACS_CHARS;
    if ((i = STRLEN(rs[Rs_acs_chars])) < 0x20) {
        val = rxvt_realloc((void *)rs[Rs_acs_chars], 0x20);
        for (; i < 0x20; )
            val[i] = ' ';
        rs[Rs_acs_chars] = val;
    }
#endif
#ifndef NO_BACKSPACE_KEY
    if (!rs[Rs_backspace_key])
# ifdef DEFAULT_BACKSPACE
        R->key_backspace = DEFAULT_BACKSPACE;
# else
        R->key_backspace = "DEC";       /* can toggle between \010 or \177 */
# endif
    else {
        val = STRDUP(rs[Rs_backspace_key]);
        rxvt_Str_trim(val);
        rxvt_Str_escaped(val);
        R->key_backspace = val;
    }
#endif
#ifndef NO_DELETE_KEY
    if (!rs[Rs_delete_key])
# ifdef DEFAULT_DELETE
        R->key_delete = DEFAULT_DELETE;
# else
        R->key_delete = "\033[3~";
# endif
    else {
        val = STRDUP(rs[Rs_delete_key]);
        rxvt_Str_trim(val);
        rxvt_Str_escaped(val);
        R->key_delete = val;
    }
#endif
    if (rs[Rs_answerbackstring]) {
        rxvt_Str_trim((char *)rs[Rs_answerbackstring]);
        rxvt_Str_escaped((char *)rs[Rs_answerbackstring]);
    }

    if (rs[Rs_selectstyle]) {
        if (STRNCASECMP(rs[Rs_selectstyle], "oldword", 7) == 0)
            R->selection_style = OLD_WORD_SELECT;
#ifndef NO_OLD_SELECTION
        else if (STRNCASECMP(rs[Rs_selectstyle], "old", 3) == 0)
            R->selection_style = OLD_SELECT;
#endif
    }

#ifdef HAVE_SCROLLBARS
    rxvt_setup_scrollbar(aR_ rs[Rs_scrollBar_align], rs[Rs_scrollstyle],
                         rs[Rs_scrollBar_thickness]);
#endif

    R->TermWin.fontset = new rxvt_fontset (aR);
    R->TermWin.fontset->populate (rs[Rs_font]);
    R->TermWin.fwidth  = R->TermWin.fontset->base_font ()->width;
    R->TermWin.fheight = R->TermWin.fontset->base_font ()->height;
    R->TermWin.fbase   = R->TermWin.fontset->base_font ()->ascent;

#ifdef XTERM_REVERSE_VIDEO
/* this is how xterm implements reverseVideo */
    if (R->Options & Opt_reverseVideo) {
        if (!rs[Rs_color + Color_fg])
            rs[Rs_color + Color_fg] = def_colorName[Color_bg];
        if (!rs[Rs_color + Color_bg])
            rs[Rs_color + Color_bg] = def_colorName[Color_fg];
    }
#endif

    for (i = 0; i < NRS_COLORS; i++)
        if (!rs[Rs_color + i])
            rs[Rs_color + i] = def_colorName[i];

#ifndef XTERM_REVERSE_VIDEO
/* this is how we implement reverseVideo */
    if (R->Options & Opt_reverseVideo)
        SWAP_IT(rs[Rs_color + Color_fg], rs[Rs_color + Color_bg], const char *);
#endif

/* convenient aliases for setting fg/bg to colors */
    rxvt_color_aliases(aR_ Color_fg);
    rxvt_color_aliases(aR_ Color_bg);
#ifndef NO_CURSORCOLOR
    rxvt_color_aliases(aR_ Color_cursor);
    rxvt_color_aliases(aR_ Color_cursor2);
#endif                          /* NO_CURSORCOLOR */
    rxvt_color_aliases(aR_ Color_pointer);
    rxvt_color_aliases(aR_ Color_border);
#ifndef NO_BOLD_UNDERLINE_REVERSE
    rxvt_color_aliases(aR_ Color_BD);
    rxvt_color_aliases(aR_ Color_UL);
    rxvt_color_aliases(aR_ Color_RV);
#endif                          /* ! NO_BOLD_UNDERLINE_REVERSE */

    return cmd_argv;
}

/*----------------------------------------------------------------------*/
/* EXTPROTO */
void
rxvt_init_env(pR)
{
    int             i;
    unsigned int    u;
    char           *val;

#ifdef DISPLAY_IS_IP
/* Fixup display_name for export over pty to any interested terminal
 * clients via "ESC[7n" (e.g. shells).  Note we use the pure IP number
 * (for the first non-loopback interface) that we get from
 * rxvt_network_display().  This is more "name-resolution-portable", if you
 * will, and probably allows for faster x-client startup if your name
 * server is beyond a slow link or overloaded at client startup.  Of
 * course that only helps the shell's child processes, not us.
 *
 * Giving out the display_name also affords a potential security hole
 */
    val = rxvt_network_display(R->rs[Rs_display_name]);
    R->rs[Rs_display_name] = (const char *)val;
    if (val == NULL)
#endif                          /* DISPLAY_IS_IP */
        val = XDisplayString(R->Xdisplay);
    if (R->rs[Rs_display_name] == NULL)
        R->rs[Rs_display_name] = val;   /* use broken `:0' value */

    i = STRLEN(val);
    R->env_display = (char *)rxvt_malloc((i + 9) * sizeof(char));

    sprintf(R->env_display, "DISPLAY=%s", val);

    /* avoiding the math library:
     * i = (int)(ceil(log10((unsigned int)R->TermWin.parent[0]))) */
    for (i = 0, u = (unsigned int)R->TermWin.parent[0]; u; u /= 10, i++) ;
    MAX_IT(i, 1);
    R->env_windowid = (char *)rxvt_malloc((i + 10) * sizeof(char));

    sprintf(R->env_windowid, "WINDOWID=%u",
            (unsigned int)R->TermWin.parent[0]);

/* add entries to the environment:
 * @ DISPLAY:   in case we started with -display
 * @ WINDOWID:  X window id number of the window
 * @ COLORTERM: terminal sub-name and also indicates its color
 * @ TERM:      terminal name
 * @ TERMINFO:  path to terminfo directory
 */
    putenv(R->env_display);
    putenv(R->env_windowid);
#ifdef RXVT_TERMINFO
    putenv("TERMINFO=" RXVT_TERMINFO);
#endif
    if (XDEPTH <= 2)
        putenv("COLORTERM=" COLORTERMENV "-mono");
    else
        putenv("COLORTERM=" COLORTERMENVFULL);
    if (R->rs[Rs_term_name] != NULL) {
        R->env_term = (char *)rxvt_malloc((STRLEN(R->rs[Rs_term_name]) + 6) * sizeof(char));
        sprintf(R->env_term, "TERM=%s", R->rs[Rs_term_name]);
        putenv(R->env_term);
    } else
        putenv("TERM=" TERMENV);

#ifdef HAVE_UNSETENV
/* avoid passing old settings and confusing term size */
    unsetenv("LINES");
    unsetenv("COLUMNS");
    unsetenv("TERMCAP");        /* terminfo should be okay */
#endif                          /* HAVE_UNSETENV */
}

/*----------------------------------------------------------------------*/
/*
 * This is more or less stolen straight from XFree86 xterm.
 * This should support all European type languages.
 */
/* EXTPROTO */
void
rxvt_init_xlocale(pR)
{
#ifdef USE_XIM
    if (R->locale == NULL)
        rxvt_print_error("Setting locale failed.");
    else {
        Atom            wmlocale;

        wmlocale = XInternAtom(R->Xdisplay, "WM_LOCALE_NAME", False);
        XChangeProperty(R->Xdisplay, R->TermWin.parent[0], wmlocale,
                        XA_STRING, 8, PropModeReplace,
                        (unsigned char *)R->locale, STRLEN(R->locale));

        if (XSupportsLocale() != True) {
            rxvt_print_error("The locale is not supported by Xlib");
            return;
        }
        rxvt_setTermFontSet(aR_ 0);

        /* see if we can connect yet */
        rxvt_IMInstantiateCallback(R->Xdisplay, NULL, NULL);

        /* To avoid Segmentation Fault in C locale: Solaris only? */
        if (STRCMP(R->locale, "C"))
            XRegisterIMInstantiateCallback(R->Xdisplay, NULL, NULL, NULL,
                                           rxvt_IMInstantiateCallback, NULL);
    }
#endif
}

/*----------------------------------------------------------------------*/
/* EXTPROTO */
void
rxvt_init_command(pR_ const char *const *argv)
{
/*
 * Initialize the command connection.
 * This should be called after the X server connection is established.
 */
    int             i;

    for (i = 0; i < NUM_XA; i++)
        R->xa[i] = XInternAtom(R->Xdisplay, xa_names[i], False);

/* Enable delete window protocol */
    XSetWMProtocols(R->Xdisplay, R->TermWin.parent[0],
                    &(R->xa[XA_WMDELETEWINDOW]), 1);

#ifdef USING_W11LIB
/* enable W11 callbacks */
    W11AddEventHandler(R->Xdisplay, rxvt_W11_process_x_event);
#endif

#ifdef META8_OPTION
    R->meta_char = (R->Options & Opt_meta8 ? 0x80 : C0_ESC);
#endif
    rxvt_get_ourmods(aR);
    if (!(R->Options & Opt_scrollTtyOutput))
        R->PrivateModes |= PrivMode_TtyOutputInh;
    if (R->Options & Opt_scrollTtyKeypress)
        R->PrivateModes |= PrivMode_Keypress;
    if (!(R->Options & Opt_jumpScroll))
        R->PrivateModes |= PrivMode_smoothScroll;
#ifndef NO_BACKSPACE_KEY
    if (STRCMP(R->key_backspace, "DEC") == 0)
        R->PrivateModes |= PrivMode_HaveBackSpace;
#endif
/* add value for scrollBar */
    if (scrollbar_visible(R)) {
        R->PrivateModes |= PrivMode_scrollBar;
        R->SavedModes |= PrivMode_scrollBar;
    }
    if (menubar_visible(R)) {
        R->PrivateModes |= PrivMode_menuBar;
        R->SavedModes |= PrivMode_menuBar;
    }
#ifdef GREEK_SUPPORT
    greek_init();
#endif

    R->Xfd = XConnectionNumber(R->Xdisplay);

#ifdef CURSOR_BLINK
    if (R->Options & Opt_cursorBlink)
        (void)gettimeofday(&R->lastcursorchange, NULL);
#endif

    if ((R->cmd_fd = rxvt_run_command(aR_ argv)) < 0) {
        rxvt_print_error("aborting");
        exit(EXIT_FAILURE);
    }
}

/*----------------------------------------------------------------------*/
/* INTPROTO */
void
rxvt_Get_Colours(pR)
{
    int             i;

    for (i = 0; i < (XDEPTH <= 2 ? 2 : NRS_COLORS); i++) {
        rxvt_color          xcol;

        if (!R->rs[Rs_color + i])
            continue;

        if (!rxvt_rXParseAllocColor(aR_ &xcol, R->rs[Rs_color + i])) {
#ifndef XTERM_REVERSE_VIDEO
            if (i < 2 && (R->Options & Opt_reverseVideo)) {
                R->rs[Rs_color + i] = def_colorName[!i];
            } else
#endif
                R->rs[Rs_color + i] = def_colorName[i];
            if (!R->rs[Rs_color + i])
                continue;
            if (!rxvt_rXParseAllocColor(aR_ &xcol, R->rs[Rs_color + i])) {
                switch (i) {
                case Color_fg:
                case Color_bg:
                    /* fatal: need bg/fg color */
                    rxvt_print_error("aborting");
                    exit(EXIT_FAILURE);
                /* NOTREACHED */
                    break;
#ifndef NO_CURSORCOLOR
                case Color_cursor2:
                    xcol = R->PixColors[Color_fg];
                    break;
#endif                          /* ! NO_CURSORCOLOR */
                case Color_pointer:
                    xcol = R->PixColors[Color_fg];
                    break;
                default:
                    xcol = R->PixColors[Color_bg];      /* None */
                    break;
                }
            }
        }
        R->PixColors[i] = xcol;
        SET_PIXCOLOR(R, i);
    }

    if (XDEPTH <= 2 || !R->rs[Rs_color + Color_pointer])
        R->PixColors[Color_pointer] = R->PixColors[Color_fg];
    if (XDEPTH <= 2 || !R->rs[Rs_color + Color_border])
        R->PixColors[Color_border] = R->PixColors[Color_fg];

/*
 * get scrollBar/menuBar shadow colors
 *
 * The calculations of topShadow/bottomShadow values are adapted
 * from the fvwm window manager.
 */
#ifdef KEEP_SCROLLCOLOR
    if (XDEPTH <= 2) {  /* Monochrome */
        R->PixColors[Color_scroll] = R->PixColors[Color_fg];
        R->PixColors[Color_topShadow] = R->PixColors[Color_bg];
        R->PixColors[Color_bottomShadow] = R->PixColors[Color_bg];
    } else {
        rxvt_color          xcol[3];
        /* xcol[0] == white
         * xcol[1] == top shadow
         * xcol[2] == bot shadow */

        xcol[1] = R->PixColors[Color_scroll];
# ifdef PREFER_24BIT
        xcol[0].set (r, -1, -1, -1);
/*        XFreeColors(R->Xdisplay, XCMAP, &(xcol[0].pixel), 1, ~0); */
# else
        xcol[0].set (WhitePixel(R->Xdisplay, Xscreen));
# endif

        unsigned short R1, G1, B1, R0, G0, B0;

        xcol[0].get (r, R0, G0, B0);
        xcol[1].get (r, R1, G1, B1);

        /* bottomShadowColor */
        if (!xcol[2].set (aR_ R1 / 2, G1 / 2, B1 / 2))
            xcol[2] = R->PixColors[Color_Black];

        R->PixColors[Color_bottomShadow] = xcol[2];

        /* topShadowColor */
        if (!xcol[1].set (aR_
                          min (R0, max (R0 / 5, R1) * 7 / 5),
                          min (G0, max (G0 / 5, G1) * 7 / 5),
                          min (B0, max (B0 / 5, B1) * 7 / 5)))
            xcol[1] = R->PixColors[Color_White];

        R->PixColors[Color_topShadow] = xcol[1];
    }
#endif                          /* KEEP_SCROLLCOLOR */
}

/*----------------------------------------------------------------------*/
/* color aliases, fg/bg bright-bold */
/* INTPROTO */
void
rxvt_color_aliases(pR_ int idx)
{
    if (R->rs[Rs_color + idx] && isdigit(*(R->rs[Rs_color + idx]))) {
        int             i = atoi(R->rs[Rs_color + idx]);

        if (i >= 8 && i <= 15) {        /* bright colors */
            i -= 8;
#ifndef NO_BRIGHTCOLOR
            R->rs[Rs_color + idx] = R->rs[Rs_color + minBrightCOLOR + i];
            return;
#endif
        }
        if (i >= 0 && i <= 7)   /* normal colors */
            R->rs[Rs_color + idx] = R->rs[Rs_color + minCOLOR + i];
    }
}

/*----------------------------------------------------------------------*/
/*
 * Probe the modifier keymap to get the Meta (Alt) and Num_Lock settings
 * Use resource ``modifier'' to override the Meta modifier
 */
/* INTPROTO */
void
rxvt_get_ourmods(pR)
{
    int             i, j, k;
    int             requestedmeta, realmeta, realalt;
    const char     *cm, *rsmod;
    XModifierKeymap *map;
    KeyCode        *kc;
    const unsigned int modmasks[] =
        { Mod1Mask, Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask };

    requestedmeta = realmeta = realalt = 0;
    rsmod = R->rs[Rs_modifier];
    if (rsmod
        && STRCASECMP(rsmod, "mod1") >= 0 && STRCASECMP(rsmod, "mod5") <= 0)
        requestedmeta = rsmod[3] - '0';

    map = XGetModifierMapping(R->Xdisplay);
    kc = map->modifiermap;
    for (i = 1; i < 6; i++) {
        k = (i + 2) * map->max_keypermod;       /* skip shift/lock/control */
        for (j = map->max_keypermod; j--; k++) {
            if (kc[k] == 0)
                break;
            switch (XKeycodeToKeysym(R->Xdisplay, kc[k], 0)) {
            case XK_Num_Lock:
                R->ModNumLockMask = modmasks[i - 1];
                /* FALLTHROUGH */
            default:
                continue;       /* for(;;) */
            case XK_Meta_L:
            case XK_Meta_R:
                cm = "meta";
                realmeta = i;
                break;
            case XK_Alt_L:
            case XK_Alt_R:
                cm = "alt";
                realalt = i;
                break;
            case XK_Super_L:
            case XK_Super_R:
                cm = "super";
                break;
            case XK_Hyper_L:
            case XK_Hyper_R:
                cm = "hyper";
                break;
            }
            if (rsmod && STRNCASECMP(rsmod, cm, STRLEN(cm)) == 0)
                requestedmeta = i;
        }
    }
    XFreeModifiermap(map);
    i = (requestedmeta ? requestedmeta
                       : (realmeta ? realmeta
                                   : (realalt ? realalt : 0)));
    if (i)
        R->ModMetaMask = modmasks[i - 1];
}

/*----------------------------------------------------------------------*/
/* rxvt_Create_Windows() - Open and map the window */
/* EXTPROTO */
void
rxvt_Create_Windows(pR_ int argc, const char *const *argv)
{
    XClassHint      classHint;
    XWMHints        wmHint;
    XGCValues       gcvalue;
    long            vt_emask;

#ifdef PREFER_24BIT
    XSetWindowAttributes attributes;
    XWindowAttributes gattr;

    XCMAP = DefaultColormap(R->Xdisplay, Xscreen);
    XVISUAL = DefaultVisual(R->Xdisplay, Xscreen);

#ifdef POINTER_BLANK
    static rxvt_color blackcolour;
    blackcolour.set (r, 0, 0, 0);
#endif
    if (R->Options & Opt_transparent) {
        XGetWindowAttributes(R->Xdisplay, RootWindow(R->Xdisplay, Xscreen),
                             &gattr);
        XDEPTH = gattr.depth;
    } else {
        XDEPTH = DefaultDepth(R->Xdisplay, Xscreen);
/*
 * If depth is not 24, look for a 24bit visual.
 */
        if (XDEPTH != 24) {
            XVisualInfo     vinfo;

            if (XMatchVisualInfo(R->Xdisplay, Xscreen, 24, TrueColor, &vinfo)) {
                XDEPTH = 24;
                XVISUAL = vinfo.visual;
                XCMAP = XCreateColormap(R->Xdisplay,
                                        RootWindow(R->Xdisplay, Xscreen),
                                        XVISUAL, AllocNone);
            }
        }
    }
#endif

/* grab colors before netscape does */
    rxvt_Get_Colours(aR);

    rxvt_change_font(aR_ 1, NULL);
    rxvt_window_calc(aR_ 0, 0);
    R->old_width = R->szHint.width;
    R->old_height = R->szHint.height;

/* parent window - reverse video so we can see placement errors
 * sub-window placement & size in rxvt_resize_subwindows()
 */

#ifdef PREFER_24BIT
    attributes.background_pixel = R->PixColors[Color_fg];
    attributes.border_pixel = R->PixColors[Color_border];
    attributes.colormap = XCMAP;
    R->TermWin.parent[0] = XCreateWindow(R->Xdisplay, Xroot,
                                         R->szHint.x, R->szHint.y,
                                         R->szHint.width, R->szHint.height,
                                         R->TermWin.ext_bwidth,
                                         XDEPTH, InputOutput,
                                         XVISUAL,
                                         CWBackPixel | CWBorderPixel
                                         | CWColormap, &attributes);
#else
    R->TermWin.parent[0] = XCreateSimpleWindow(R->Xdisplay, Xroot,
                                               R->szHint.x, R->szHint.y,
                                               R->szHint.width,
                                               R->szHint.height,
                                               R->TermWin.ext_bwidth,
                                               R->PixColors[Color_border],
                                               R->PixColors[Color_fg]);
#endif
    rxvt_xterm_seq(aR_ XTerm_title, R->rs[Rs_title], CHAR_ST);
    rxvt_xterm_seq(aR_ XTerm_iconName, R->rs[Rs_iconName], CHAR_ST);

    classHint.res_name = (char *)R->rs[Rs_name];
    classHint.res_class = (char *)APL_CLASS;

    wmHint.flags = (InputHint | StateHint | WindowGroupHint);
    wmHint.input = True;
    wmHint.initial_state = (R->Options & Opt_iconic ? IconicState
                                                    : NormalState);
    wmHint.window_group = R->TermWin.parent[0];

    XSetWMProperties(R->Xdisplay, R->TermWin.parent[0], NULL, NULL,
                     (char **)argv, argc, &R->szHint, &wmHint, &classHint);
    XSelectInput(R->Xdisplay, R->TermWin.parent[0],
                 (KeyPressMask
#if defined(MOUSE_WHEEL) && defined(MOUSE_SLIP_WHEELING)
                  | KeyReleaseMask
#endif
                  | FocusChangeMask | VisibilityChangeMask
                  | StructureNotifyMask));

/* vt cursor: Black-on-White is standard, but this is more popular */
    R->TermWin_cursor = XCreateFontCursor(R->Xdisplay, XC_xterm);

#if defined(HAVE_SCROLLBARS) || defined(MENUBAR)
/* cursor (menuBar/scrollBar): Black-on-White */
    R->pointer_leftptr = XCreateFontCursor(R->Xdisplay, XC_left_ptr);
#endif

#ifdef POINTER_BLANK
    R->pointer_blank = XCreateGlyphCursor(R->Xdisplay, R->TermWin.font->fid,
                                             R->TermWin.font->fid, ' ', ' ',
                                             &blackcolour, &blackcolour);
#endif

/* the vt window */
    R->TermWin.vt = XCreateSimpleWindow(R->Xdisplay, R->TermWin.parent[0],
                                        R->window_vt_x, R->window_vt_y,
                                        TermWin_TotalWidth(),
                                        TermWin_TotalHeight(),
                                        0,
                                        R->PixColors[Color_fg],
                                        R->PixColors[Color_bg]);
#ifdef DEBUG_X
    XStoreName(R->Xdisplay, R->TermWin.vt, "vt window");
#endif
    rxvt_pointer_unblank(aR);
    vt_emask = (ExposureMask | ButtonPressMask | ButtonReleaseMask
                | PropertyChangeMask);
#ifdef POINTER_BLANK
    if ((R->Options & Opt_pointerBlank))
        vt_emask |= PointerMotionMask;
    else
#endif
        vt_emask |= (Button1MotionMask | Button3MotionMask);
    XSelectInput(R->Xdisplay, R->TermWin.vt, vt_emask);

#if defined(MENUBAR) && (MENUBAR_MAX > 1)
    if (menuBar_height()) {
        R->menuBar.win = XCreateSimpleWindow(R->Xdisplay, R->TermWin.parent[0],
                                             R->window_vt_x, 0,
                                             TermWin_TotalWidth(),
                                             menuBar_TotalHeight(),
                                             0,
                                             R->PixColors[Color_fg],
                                             R->PixColors[Color_scroll]);
#ifdef DEBUG_X
    XStoreName(R->Xdisplay, R->menuBar.win, "menubar");
#endif
        XDefineCursor(R->Xdisplay, R->menuBar.win, R->pointer_leftptr);
        XSelectInput(R->Xdisplay, R->menuBar.win,
                     (ExposureMask | ButtonPressMask | ButtonReleaseMask
                      | Button1MotionMask));
    }
#endif
#ifdef XPM_BACKGROUND
    if (R->rs[Rs_backgroundPixmap] != NULL
        && !(R->Options & Opt_transparent)) {
        const char     *p = R->rs[Rs_backgroundPixmap];

        if ((p = STRCHR(p, ';')) != NULL) {
            p++;
            rxvt_scale_pixmap(aR_ p);
        }
        rxvt_set_bgPixmap(aR_ R->rs[Rs_backgroundPixmap]);
        rxvt_scr_touch(aR_ True);
    }
#endif

/* graphics context for the vt window */
    gcvalue.foreground = R->PixColors[Color_fg];
    gcvalue.background = R->PixColors[Color_bg];
    gcvalue.graphics_exposures = 1;
    R->TermWin.gc = XCreateGC(R->Xdisplay, R->TermWin.vt,
                              GCForeground | GCBackground
                              | GCGraphicsExposures, &gcvalue);

#if defined(MENUBAR) || defined(RXVT_SCROLLBAR)
    gcvalue.foreground = R->PixColors[Color_topShadow];
    R->topShadowGC = XCreateGC(R->Xdisplay, R->TermWin.vt,
                                  GCForeground, &gcvalue);
    gcvalue.foreground = R->PixColors[Color_bottomShadow];
    R->botShadowGC = XCreateGC(R->Xdisplay, R->TermWin.vt,
                                  GCForeground, &gcvalue);
    gcvalue.foreground = R->PixColors[(XDEPTH <= 2 ? Color_fg
                                                   : Color_scroll)];
    R->scrollbarGC = XCreateGC(R->Xdisplay, R->TermWin.vt,
                                  GCForeground, &gcvalue);
#endif
}

/*----------------------------------------------------------------------*/
/*
 * Run the command in a subprocess and return a file descriptor for the
 * master end of the pseudo-teletype pair with the command talking to
 * the slave.
 */
/* INTPROTO */
int
rxvt_run_command(pR_ const char *const *argv)
{
    int             cfd, er;

/* get master (pty) */
    if ((cfd = rxvt_get_pty(&(R->tty_fd), &(R->ttydev))) < 0) {
        rxvt_print_error("can't open pseudo-tty");
        return -1;
    }
#ifdef FD_SETSIZE
    if (R->Xfd > FD_SETSIZE || cfd > FD_SETSIZE) {
        rxvt_print_error("fd too high: %d max", FD_SETSIZE);
        rxvt_clean_exit();
        exit(EXIT_FAILURE);
    }
#endif
    fcntl(cfd, F_SETFL, O_NDELAY);

/* get slave (tty) */
    if (R->tty_fd < 0) {
#ifndef NO_SETOWNER_TTYDEV
        rxvt_privileged_ttydev(aR_ SAVE);
#endif
        if ((R->tty_fd = rxvt_get_tty(R->ttydev)) < 0) {
            close(cfd);
            rxvt_print_error("can't open slave tty %s", R->ttydev);
            return -1;
        }
    }
#ifndef NO_BACKSPACE_KEY
    if (R->key_backspace[0] && !R->key_backspace[1])
        er = R->key_backspace[0];
    else if (STRCMP(R->key_backspace, "DEC") == 0)
        er = '\177';            /* the initial state anyway */
    else
#endif
        er = -1;
    rxvt_get_ttymode(&(R->tio), er);

/* install exit handler for cleanup */
#ifdef HAVE_ATEXIT
    atexit(rxvt_clean_exit);
#else
# ifdef HAVE_ON_EXIT
    on_exit(rxvt_clean_exit, NULL);     /* non-ANSI exit handler */
# endif
#endif

    signal(SIGHUP, rxvt_Exit_signal);
#ifndef __svr4__
    signal(SIGINT, rxvt_Exit_signal);
#endif
    signal(SIGQUIT, rxvt_Exit_signal);
    signal(SIGTERM, rxvt_Exit_signal);
    signal(SIGCHLD, rxvt_Child_signal);

/* need to trap SIGURG for SVR4 (Unixware) rlogin */
/* signal (SIGURG, SIG_DFL); */

#ifndef __QNX__
/* spin off the command interpreter */
    switch (R->cmd_pid = fork()) {
    case -1:
        rxvt_print_error("can't fork");
        return -1;
    case 0:
        close(cfd);             /* only keep R->tty_fd and STDERR open */
        close(R->Xfd);
        if (rxvt_control_tty(R->tty_fd, R->ttydev) < 0)
            rxvt_print_error("could not obtain control of tty");
        else {
        /* Reopen stdin, stdout and stderr over the tty file descriptor */
            dup2(R->tty_fd, STDIN_FILENO);
            dup2(R->tty_fd, STDOUT_FILENO);
            dup2(R->tty_fd, STDERR_FILENO);
            if (R->tty_fd > 2)
                close(R->tty_fd);
            rxvt_run_child(aR_ argv);
        }
        exit(EXIT_FAILURE);
        /* NOTREACHED */
    default:
        {
#if defined(HAVE_STRUCT_UTMP) && defined(HAVE_TTYSLOT)
            int             fdstdin;

            fdstdin = dup(STDIN_FILENO);
            dup2(R->tty_fd, STDIN_FILENO);
#endif
            rxvt_privileged_utmp(aR_ SAVE);
#if defined(HAVE_STRUCT_UTMP) && defined(HAVE_TTYSLOT)
            dup2(fdstdin, STDIN_FILENO);
            close(fdstdin);
#endif
        }
        close(R->tty_fd);       /* keep STDERR_FILENO, R->cmd_fd, R->Xfd open */
        break;
    }
#else                           /* __QNX__ uses qnxspawn() */
    fchmod(R->tty_fd, 0622);
    fcntl(R->tty_fd, F_SETFD, FD_CLOEXEC);
    fcntl(cfd, F_SETFD, FD_CLOEXEC);

    if (rxvt_run_child(aR_ argv) == -1)
        exit(EXIT_FAILURE);
#endif
/*
 * Reduce R->num_fds to what we use, so select() is more efficient
 */
    R->num_fds = max(STDERR_FILENO, cfd);
    MAX_IT(R->num_fds, R->Xfd);
#ifdef __sgi                    /* Alex Coventry says we need 4 & 7 too */
    MAX_IT(R->num_fds, 7);
#endif
    R->num_fds++;               /* counts from 0 */

    return cfd;
}

/* ------------------------------------------------------------------------- *
 *                          CHILD PROCESS OPERATIONS                         *
 * ------------------------------------------------------------------------- */
/*
 * The only open file descriptor is the slave tty - so no error messages.
 * returns are fatal
 */
/* INTPROTO */
int
rxvt_run_child(pR_ const char *const *argv)
{
    char           *login;

    SET_TTYMODE(STDIN_FILENO, &(R->tio));       /* init terminal attributes */

    if (R->Options & Opt_console) {     /* be virtual console, fail silently */
#ifdef TIOCCONS
        unsigned int    on = 1;

        ioctl(STDIN_FILENO, TIOCCONS, &on);
#elif defined (SRIOCSREDIR)
        int             fd;

        fd = open(CONSOLE, O_WRONLY, 0);
        if (fd >= 0) {
            if (ioctl(fd, SRIOCSREDIR, NULL) < 0)
                close(fd);
        }
#endif                          /* SRIOCSREDIR */
    }

/* reset signals and spin off the command interpreter */
    signal(SIGINT, SIG_DFL);
    signal(SIGQUIT, SIG_DFL);
    signal(SIGCHLD, SIG_DFL);
/*
 * mimick login's behavior by disabling the job control signals
 * a shell that wants them can turn them back on
 */
#ifdef SIGTSTP
    signal(SIGTSTP, SIG_IGN);
    signal(SIGTTIN, SIG_IGN);
    signal(SIGTTOU, SIG_IGN);
#endif                          /* SIGTSTP */

    /* set window size */
    rxvt_tt_winsize(STDIN_FILENO, R->TermWin.ncol, R->TermWin.nrow, 0);

#ifndef __QNX__
/* command interpreter path */
    if (argv != NULL) {
# ifdef DEBUG_CMD
        int             i;

        for (i = 0; argv[i]; i++)
            fprintf(stderr, "argv [%d] = \"%s\"\n", i, argv[i]);
# endif
        execvp(argv[0], (char *const *)argv);
        /* no error message: STDERR is closed! */
    } else {
        const char     *argv0, *shell;

        if ((shell = getenv("SHELL")) == NULL || *shell == '\0')
            shell = "/bin/sh";

        argv0 = (const char *)rxvt_r_basename(shell);
        if (R->Options & Opt_loginShell) {
            login = (char *)rxvt_malloc((STRLEN(argv0) + 2) * sizeof(char));

            login[0] = '-';
            STRCPY(&login[1], argv0);
            argv0 = login;
        }
        execlp(shell, argv0, NULL);
        /* no error message: STDERR is closed! */
    }
#else                           /* __QNX__ uses qnxspawn() */
    {
        char            iov_a[10] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 };
        char           *command = NULL, fullcommand[_MAX_PATH];
        char          **arg_v, *arg_a[2] = { NULL, NULL };

        if (argv != NULL) {
            if (access(argv[0], X_OK) == -1) {
                if (STRCHR(argv[0], '/') == NULL) {
                    searchenv(argv[0], "PATH", fullcommand);
                    if (fullcommand[0] != '\0')
                        command = fullcommand;
                }
                if (access(command, X_OK) == -1)
                    return -1;
            } else
                command = argv[0];
            arg_v = argv;
        } else {
            if ((command = getenv("SHELL")) == NULL || *command == '\0')
                command = "/bin/sh";

            arg_a[0] = my_basename(command);
            if (R->Options & Opt_loginShell) {
                login = rxvt_malloc((STRLEN(arg_a[0]) + 2) * sizeof(char));

                login[0] = '-';
                STRCPY(&login[1], arg_a[0]);
                arg_a[0] = login;
            }
            arg_v = arg_a;
        }
        iov_a[0] = iov_a[1] = iov_a[2] = R->tty_fd;
        R->cmd_pid = qnx_spawn(0, 0, 0, -1, -1,
                                  _SPAWN_SETSID | _SPAWN_TCSETPGRP,
                                  command, arg_v, environ, iov_a, 0);
        if (login)
            free(login);
        close(R->tty_fd);
        return R->cmd_fd;
    }
#endif
    return -1;
}

/* ------------------------------------------------------------------------- *
 *                            GET TTY CURRENT STATE                          *
 * ------------------------------------------------------------------------- */
/* rxvt_get_ttymode() */
/* INTPROTO */
void
rxvt_get_ttymode(ttymode_t *tio, int erase)
{
#ifdef HAVE_TERMIOS_H
/*
 * standard System V termios interface
 */
    if (GET_TERMIOS(STDIN_FILENO, tio) < 0) {
        /* return error - use system defaults */
        tio->c_cc[VINTR] = CINTR;
        tio->c_cc[VQUIT] = CQUIT;
        tio->c_cc[VERASE] = CERASE;
        tio->c_cc[VKILL] = CKILL;
        tio->c_cc[VSTART] = CSTART;
        tio->c_cc[VSTOP] = CSTOP;
        tio->c_cc[VSUSP] = CSUSP;
# ifdef VDSUSP
        tio->c_cc[VDSUSP] = CDSUSP;
# endif
# ifdef VREPRINT
        tio->c_cc[VREPRINT] = CRPRNT;
# endif
# ifdef VDISCRD
        tio->c_cc[VDISCRD] = CFLUSH;
# endif
# ifdef VWERSE
        tio->c_cc[VWERSE] = CWERASE;
# endif
# ifdef VLNEXT
        tio->c_cc[VLNEXT] = CLNEXT;
# endif
    }
    tio->c_cc[VEOF] = CEOF;
    tio->c_cc[VEOL] = VDISABLE;
# ifdef VEOL2
    tio->c_cc[VEOL2] = VDISABLE;
# endif
# ifdef VSWTC
    tio->c_cc[VSWTC] = VDISABLE;
# endif
# ifdef VSWTCH
    tio->c_cc[VSWTCH] = VDISABLE;
# endif
# if VMIN != VEOF
    tio->c_cc[VMIN] = 1;
# endif
# if VTIME != VEOL
    tio->c_cc[VTIME] = 0;
# endif
    if (erase != -1)
        tio->c_cc[VERASE] = (char)erase;

/* input modes */
    tio->c_iflag = (BRKINT | IGNPAR | ICRNL
# ifdef IMAXBEL
                    | IMAXBEL
# endif
                    | IXON);

/* output modes */
    tio->c_oflag = (OPOST | ONLCR);

/* control modes */
    tio->c_cflag = (CS8 | CREAD);

/* line discipline modes */
    tio->c_lflag = (ISIG | ICANON | IEXTEN | ECHO
# if defined (ECHOCTL) && defined (ECHOKE)
                    | ECHOCTL | ECHOKE
# endif
                    | ECHOE | ECHOK);
# else                          /* HAVE_TERMIOS_H */

/*
 * sgtty interface
 */

/* get parameters -- gtty */
    if (ioctl(STDIN_FILENO, TIOCGETP, &(tio->sg)) < 0) {
        tio->sg.sg_erase = CERASE;      /* ^H */
        tio->sg.sg_kill = CKILL;        /* ^U */
    }
    if (erase != -1)
        tio->sg.sg_erase = (char)erase;

    tio->sg.sg_flags = (CRMOD | ECHO | EVENP | ODDP);

/* get special characters */
    if (ioctl(STDIN_FILENO, TIOCGETC, &(tio->tc)) < 0) {
        tio->tc.t_intrc = CINTR;        /* ^C */
        tio->tc.t_quitc = CQUIT;        /* ^\ */
        tio->tc.t_startc = CSTART;      /* ^Q */
        tio->tc.t_stopc = CSTOP;        /* ^S */
        tio->tc.t_eofc = CEOF;  /* ^D */
        tio->tc.t_brkc = -1;
    }
/* get local special chars */
    if (ioctl(STDIN_FILENO, TIOCGLTC, &(tio->lc)) < 0) {
        tio->lc.t_suspc = CSUSP;        /* ^Z */
        tio->lc.t_dsuspc = CDSUSP;      /* ^Y */
        tio->lc.t_rprntc = CRPRNT;      /* ^R */
        tio->lc.t_flushc = CFLUSH;      /* ^O */
        tio->lc.t_werasc = CWERASE;     /* ^W */
        tio->lc.t_lnextc = CLNEXT;      /* ^V */
    }
/* get line discipline */
    ioctl(STDIN_FILENO, TIOCGETD, &(tio->line));
# ifdef NTTYDISC
    tio->line = NTTYDISC;
# endif                         /* NTTYDISC */
    tio->local = (LCRTBS | LCRTERA | LCTLECH | LPASS8 | LCRTKIL);
#endif                          /* HAVE_TERMIOS_H */

/*
 * Debugging
 */
#ifdef DEBUG_TTYMODE
#ifdef HAVE_TERMIOS_H
/* c_iflag bits */
    fprintf(stderr, "Input flags\n");

/* cpp token stringize doesn't work on all machines <sigh> */
# define FOO(flag,name)                 \
    if ((tio->c_iflag) & flag)          \
        fprintf (stderr, "%s ", name)

/* c_iflag bits */
    FOO(IGNBRK, "IGNBRK");
    FOO(BRKINT, "BRKINT");
    FOO(IGNPAR, "IGNPAR");
    FOO(PARMRK, "PARMRK");
    FOO(INPCK, "INPCK");
    FOO(ISTRIP, "ISTRIP");
    FOO(INLCR, "INLCR");
    FOO(IGNCR, "IGNCR");
    FOO(ICRNL, "ICRNL");
    FOO(IXON, "IXON");
    FOO(IXOFF, "IXOFF");
# ifdef IUCLC
    FOO(IUCLC, "IUCLC");
# endif
# ifdef IXANY
    FOO(IXANY, "IXANY");
# endif
# ifdef IMAXBEL
    FOO(IMAXBEL, "IMAXBEL");
# endif
    fprintf(stderr, "\n");

# undef FOO
# define FOO(entry, name)                                       \
    fprintf(stderr, "%-8s = %#04o\n", name, tio->c_cc [entry])

    FOO(VINTR, "VINTR");
    FOO(VQUIT, "VQUIT");
    FOO(VERASE, "VERASE");
    FOO(VKILL, "VKILL");
    FOO(VEOF, "VEOF");
    FOO(VEOL, "VEOL");
# ifdef VEOL2
    FOO(VEOL2, "VEOL2");
# endif
# ifdef VSWTC
    FOO(VSWTC, "VSWTC");
# endif
# ifdef VSWTCH
    FOO(VSWTCH, "VSWTCH");
# endif
    FOO(VSTART, "VSTART");
    FOO(VSTOP, "VSTOP");
    FOO(VSUSP, "VSUSP");
# ifdef VDSUSP
    FOO(VDSUSP, "VDSUSP");
# endif
# ifdef VREPRINT
    FOO(VREPRINT, "VREPRINT");
# endif
# ifdef VDISCRD
    FOO(VDISCRD, "VDISCRD");
# endif
# ifdef VWERSE
    FOO(VWERSE, "VWERSE");
# endif
# ifdef VLNEXT
    FOO(VLNEXT, "VLNEXT");
# endif
    fprintf(stderr, "\n");
# undef FOO
# endif                         /* HAVE_TERMIOS_H */
#endif                          /* DEBUG_TTYMODE */
}

/*----------------------- end-of-file (C source) -----------------------*/
Revision:	1.3
Committed:	Tue Nov 25 11:52:42 2003 UTC (20 years, 6 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+111 -118 lines
Log Message:	* empty log message *