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/*
* calmwm - the calm window manager
*
* Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $OpenBSD: calmwm.c,v 1.80 2013/07/15 14:50:44 okan Exp $
*/
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <getopt.h>
#include <locale.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "calmwm.h"
char **cwm_argv;
Display *X_Dpy;
Atom cwmh[CWMH_NITEMS];
Atom ewmh[EWMH_NITEMS];
struct screen_ctx_q Screenq = TAILQ_HEAD_INITIALIZER(Screenq);
struct client_ctx_q Clientq = TAILQ_HEAD_INITIALIZER(Clientq);
int HasRandr, Randr_ev;
struct conf Conf;
char *homedir;
static void sigchld_cb(int);
static int x_errorhandler(Display *, XErrorEvent *);
static void x_init(const char *);
static void x_teardown(void);
static int x_wmerrorhandler(Display *, XErrorEvent *);
int
main(int argc, char **argv)
{
const char *conf_file = NULL;
char *conf_path, *display_name = NULL;
int ch;
struct passwd *pw;
if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
warnx("no locale support");
mbtowc(NULL, NULL, MB_CUR_MAX);
cwm_argv = argv;
while ((ch = getopt(argc, argv, "c:d:")) != -1) {
switch (ch) {
case 'c':
conf_file = optarg;
break;
case 'd':
display_name = optarg;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (signal(SIGCHLD, sigchld_cb) == SIG_ERR)
err(1, "signal");
if ((homedir = getenv("HOME")) == NULL || *homedir == '\0') {
pw = getpwuid(getuid());
if (pw != NULL && pw->pw_dir != NULL && *pw->pw_dir != '\0')
homedir = pw->pw_dir;
else
homedir = "/";
}
if (conf_file == NULL)
xasprintf(&conf_path, "%s/%s", homedir, CONFFILE);
else
conf_path = xstrdup(conf_file);
if (access(conf_path, R_OK) != 0) {
if (conf_file != NULL)
warn("%s", conf_file);
free(conf_path);
conf_path = NULL;
}
conf_init(&Conf);
if (conf_path && (parse_config(conf_path, &Conf) == -1))
warnx("config file %s has errors, not loading", conf_path);
free(conf_path);
x_init(display_name);
xev_loop();
x_teardown();
return (0);
}
static void
x_init(const char *dpyname)
{
int i;
if ((X_Dpy = XOpenDisplay(dpyname)) == NULL)
errx(1, "unable to open display \"%s\"", XDisplayName(dpyname));
XSetErrorHandler(x_wmerrorhandler);
XSelectInput(X_Dpy, DefaultRootWindow(X_Dpy), SubstructureRedirectMask);
XSync(X_Dpy, False);
XSetErrorHandler(x_errorhandler);
HasRandr = XRRQueryExtension(X_Dpy, &Randr_ev, &i);
conf_atoms();
conf_cursor(&Conf);
for (i = 0; i < ScreenCount(X_Dpy); i++)
screen_init(i);
}
static void
x_teardown(void)
{
XCloseDisplay(X_Dpy);
}
static int
x_wmerrorhandler(Display *dpy, XErrorEvent *e)
{
errx(1, "root window unavailable - perhaps another wm is running?");
return (0);
}
static int
x_errorhandler(Display *dpy, XErrorEvent *e)
{
#ifdef DEBUG
char msg[80], number[80], req[80];
XGetErrorText(X_Dpy, e->error_code, msg, sizeof(msg));
(void)snprintf(number, sizeof(number), "%d", e->request_code);
XGetErrorDatabaseText(X_Dpy, "XRequest", number,
"<unknown>", req, sizeof(req));
warnx("%s(0x%x): %s", req, (u_int)e->resourceid, msg);
#endif
return (0);
}
static void
sigchld_cb(int which)
{
pid_t pid;
int save_errno = errno;
int status;
/* Collect dead children. */
while ((pid = waitpid(-1, &status, WNOHANG)) > 0 ||
(pid < 0 && errno == EINTR))
;
errno = save_errno;
}
__dead void
usage(void)
{
extern char *__progname;
(void)fprintf(stderr, "usage: %s [-c file] [-d display]\n",
__progname);
exit(1);
}
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