326 lines
8.7 KiB
C
326 lines
8.7 KiB
C
/* main.c -- Eterm main() function
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* -- 22 August 1998, mej
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*
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* This file is original work by Michael Jennings <mej@eterm.org> and
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* Tuomo Venalainen <vendu@cc.hut.fi>. This file, and any other file
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* bearing this same message or a similar one, is distributed under
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* the GNU Public License (GPL) as outlined in the COPYING file.
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*
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* Copyright (C) 1997, Michael Jennings and Tuomo Venalainen
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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static const char cvs_ident[] = "$Id$";
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#include "config.h"
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#include "feature.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <ctype.h>
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#include <X11/cursorfont.h>
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#include <X11/keysym.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xatom.h>
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#include <X11/Xos.h>
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#include "../libmej/debug.h" /* from libmej */
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#include "debug.h"
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#include "../libmej/mem.h"
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#include "../libmej/strings.h"
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#include "main.h"
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#include "actions.h"
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#include "command.h"
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#include "eterm_utmp.h"
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#include "events.h"
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#include "graphics.h"
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#include "options.h"
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#include "pixmap.h"
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#include "screen.h"
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#include "scrollbar.h"
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#include "term.h"
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#ifdef USE_POSIX_THREADS
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# include "threads.h"
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#endif
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#include "windows.h"
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char *orig_argv0;
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#ifdef PIXMAP_SUPPORT
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/* Set to one in case there is no WM, or a lousy one
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that doesn't send the right events (*cough*
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Window Maker *cough*) -- mej */
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short bg_needs_update = 1;
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#endif
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#ifdef USE_POSIX_THREADS
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static void **retval;
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static int join_value;
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static pthread_t main_loop_thr;
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static pthread_attr_t main_loop_attr;
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# ifdef MUTEX_SYNCH
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pthread_mutex_t mutex;
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# endif
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#endif
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TermWin_t TermWin;
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Display *Xdisplay; /* display */
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Colormap cmap;
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unsigned int debug_level = 0; /* Level of debugging information to display */
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const char *display_name = NULL;
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unsigned int colorfgbg;
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/* main() */
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int
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main(int argc, char *argv[])
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{
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int i;
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char *val;
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static char windowid_string[20], *display_string, *term_string; /* "WINDOWID=\0" = 10 chars, UINT_MAX = 10 chars */
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ImlibInitParams params;
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orig_argv0 = argv[0];
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#ifdef USE_POSIX_THREADS
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# ifdef MUTEX_SYNCH
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pthread_atfork((void *) &prepare, (void *) &parent, (void *) &child);
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# endif
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#endif
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/* Security enhancements -- mej */
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putenv("IFS= \t");
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my_ruid = getuid();
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my_euid = geteuid();
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my_rgid = getgid();
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my_egid = getegid();
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privileges(REVERT);
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getcwd(initial_dir, PATH_MAX);
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init_defaults();
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/* Open display, get options/resources and create the window */
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if ((display_name = getenv("DISPLAY")) == NULL)
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display_name = ":0";
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/* This MUST be called before any other Xlib functions */
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#ifdef USE_POSIX_THREADS
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if (XInitThreads()) {
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D_THREADS(("XInitThreads() succesful\n"));
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} else {
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D_THREADS(("XInitThreads() failed, I'm outta here\n"));
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}
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#endif
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get_initial_options(argc, argv);
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#ifdef NEED_LINUX_HACK
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privileges(INVOKE); /* xdm in new Linux versions requires ruid != root to open the display -- mej */
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#endif
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Xdisplay = XOpenDisplay(display_name);
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#ifdef NEED_LINUX_HACK
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privileges(REVERT);
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#endif
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if (!Xdisplay) {
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print_error("can't open display %s", display_name);
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exit(EXIT_FAILURE);
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}
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#if DEBUG >= DEBUG_X
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if (debug_level >= DEBUG_X) {
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XSetErrorHandler((XErrorHandler) abort);
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} else {
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XSetErrorHandler((XErrorHandler) xerror_handler);
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}
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#else
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XSetErrorHandler((XErrorHandler) xerror_handler);
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#endif
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if (Options & Opt_install) {
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cmap = XCreateColormap(Xdisplay, Xroot, Xvisual, AllocNone);
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XInstallColormap(Xdisplay, cmap);
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#ifdef PIXMAP_SUPPORT
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params.cmap = cmap;
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params.flags = PARAMS_COLORMAP;
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#endif
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} else {
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cmap = Xcmap;
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#ifdef PIXMAP_SUPPORT
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params.flags = 0;
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#endif
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}
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/* Since we always use Imlib now, let's initialize it here. */
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#ifdef PIXMAP_SUPPORT
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if (params.flags) {
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imlib_id = Imlib_init_with_params(Xdisplay, ¶ms);
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} else {
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imlib_id = Imlib_init(Xdisplay);
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}
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if (!imlib_id) {
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fatal_error("Unable to initialize Imlib. Aborting.");
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}
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#endif
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read_config(THEME_CFG);
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read_config((rs_config_file ? rs_config_file : USER_CFG));
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#if defined(PIXMAP_SUPPORT)
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if (rs_path || theme_dir || user_dir) {
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register unsigned long len;
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register char *tmp;
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len = strlen(initial_dir);
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if (rs_path) {
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len += strlen(rs_path) + 1; /* +1 for the colon */
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}
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if (theme_dir) {
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len += strlen(theme_dir) + 1;
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}
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if (user_dir) {
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len += strlen(user_dir) + 1;
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}
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tmp = MALLOC(len + 1); /* +1 here for the NUL */
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snprintf(tmp, len + 1, "%s%s%s%s%s%s%s", (rs_path ? rs_path : ""), (rs_path ? ":" : ""), initial_dir,
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(theme_dir ? ":" : ""), (theme_dir ? theme_dir : ""), (user_dir ? ":" : ""), (user_dir ? user_dir : ""));
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tmp[len] = '\0';
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FREE(rs_path);
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rs_path = tmp;
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D_OPTIONS(("New rs_path set to \"%s\"\n", rs_path));
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}
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#endif
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get_options(argc, argv);
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D_UTMP(("Saved real uid/gid = [ %d, %d ] effective uid/gid = [ %d, %d ]\n", my_ruid, my_rgid, my_euid, my_egid));
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D_UTMP(("Now running with real uid/gid = [ %d, %d ] effective uid/gid = [ %d, %d ]\n", getuid(), getgid(), geteuid(),
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getegid()));
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post_parse();
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#ifdef PREFER_24BIT
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cmap = DefaultColormap(Xdisplay, Xscreen);
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/*
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* If depth is not 24, look for a 24bit visual.
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*/
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if (Xdepth != 24) {
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XVisualInfo vinfo;
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if (XMatchVisualInfo(Xdisplay, Xscreen, 24, TrueColor, &vinfo)) {
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Xdepth = 24;
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Xvisual = vinfo.visual;
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cmap = XCreateColormap(Xdisplay, RootWindow(Xdisplay, Xscreen),
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Xvisual, AllocNone);
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}
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}
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#endif
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Create_Windows(argc, argv);
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scr_reset(); /* initialize screen */
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Gr_reset(); /* reset graphics */
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/* add scrollBar, do it directly to avoid resize() */
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scrollbar_mapping(Options & Opt_scrollBar);
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#if DEBUG >= DEBUG_X
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if (debug_level >= DEBUG_X) {
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XSynchronize(Xdisplay, True);
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}
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#endif
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#ifdef DISPLAY_IS_IP
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/* Fixup display_name for export over pty to any interested terminal
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* clients via "ESC[7n" (e.g. shells). Note we use the pure IP number
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* (for the first non-loopback interface) that we get from
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* network_display(). This is more "name-resolution-portable", if you
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* will, and probably allows for faster x-client startup if your name
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* server is beyond a slow link or overloaded at client startup. Of
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* course that only helps the shell's child processes, not us.
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*
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* Giving out the display_name also affords a potential security hole
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*/
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val = display_name = network_display(display_name);
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if (val == NULL)
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#endif /* DISPLAY_IS_IP */
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val = XDisplayString(Xdisplay);
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if (display_name == NULL)
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display_name = val; /* use broken `:0' value */
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i = strlen(val);
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display_string = MALLOC((i + 9));
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sprintf(display_string, "DISPLAY=%s", val);
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sprintf(windowid_string, "WINDOWID=%u", (unsigned int) TermWin.parent);
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/* add entries to the environment:
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* DISPLAY: in case we started with -display
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* WINDOWID: X window id number of the window
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* COLORTERM: terminal sub-name and also indicates its color
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* TERM: terminal name
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*/
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putenv(display_string);
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putenv(windowid_string);
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if (Xdepth <= 2) {
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putenv("COLORTERM=" COLORTERMENV "-mono");
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putenv("TERM=" TERMENV);
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} else {
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if (rs_term_name != NULL) {
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i = strlen(rs_term_name);
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term_string = MALLOC((i + 6) * sizeof(char));
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sprintf(term_string, "TERM=%s", rs_term_name);
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putenv(term_string);
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} else {
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#ifdef DEFINE_XTERM_COLOR
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if (Xdepth <= 2)
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putenv("TERM=" TERMENV);
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else
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putenv("TERM=" TERMENV "-color");
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#else
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putenv("TERM=" TERMENV);
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#endif
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}
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putenv("COLORTERM=" COLORTERMENV);
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}
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putenv("ETERM_VERSION=" VERSION);
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D_CMD(("init_command()\n"));
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init_command(rs_execArgs);
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#ifndef USE_POSIX_THREADS
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if (Options & Opt_borderless) {
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resize_window();
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}
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#endif
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#ifdef USE_POSIX_THREADS
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D_THREADS(("main_thread:"));
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pthread_attr_init(&main_loop_attr);
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pthread_create(&main_loop_thr, &main_loop_attr,
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(void *) &main_thread, NULL);
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D_THREADS(("done? :)\n"));
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while (1);
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/* main_loop(); */
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#else
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main_loop(); /* main processing loop */
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#endif
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return (EXIT_SUCCESS);
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}
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/* EOF */
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