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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <xs.h>
#include "apps.h"
#define array_size(x) (sizeof(x)/sizeof(*x))
/* ------------------------------------------------------------------ */
static int debug = 1;
int desktop_kde;
int desktop_gnome;
int app_have_screen;
int app_have_xenconsole;
int app_have_krdc;
int app_have_vncviewer;
int app_have_kfmclient;
int app_have_firefox;
char app_error[256];
/* ------------------------------------------------------------------ */
static gboolean have_binary(char *name)
{
char *path, *elem, *binary;
struct stat st;
int rc;
if (strchr(name,'/')) {
/* path specified ... */
if (-1 == stat(name, &st))
return false;
if (!S_ISREG(st.st_mode))
return false;
if (!(st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
return false;
return true;
}
/* walk $PATH */
path = getenv("PATH");
if (NULL == path)
return false;
path = strdup(path);
for (elem = strtok(path, ":"); NULL != elem; elem = strtok(NULL, ":")) {
binary = malloc(strlen(elem)+strlen(name)+2);
sprintf(binary, "%s/%s", elem, name);
rc = stat(binary, &st);
free(binary);
if (-1 == rc)
continue;
if (!S_ISREG(st.st_mode))
continue;
if (!(st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
continue;
free(path);
return true;
}
free(path);
return false;
}
void detect_applications(void)
{
app_have_screen = have_binary("screen");
app_have_xenconsole = have_binary(XENCONSOLE);
app_have_krdc = have_binary("krdc");
app_have_vncviewer = have_binary("vncviewer");
app_have_kfmclient = have_binary("kfmclient");
app_have_firefox = have_binary("firefox");
}
/* ------------------------------------------------------------------ */
static int
check_wm_capability(Display *dpy, Window root, Atom list, Atom wanted)
{
Atom type;
int format;
unsigned int i;
unsigned long nitems, bytesafter;
unsigned char *args;
unsigned long *ldata;
char *name;
int retval = -1;
if (Success != XGetWindowProperty
(dpy, root, list, 0, (65536 / sizeof(long)), False,
AnyPropertyType, &type, &format, &nitems, &bytesafter, &args))
return -1;
if (type != XA_ATOM)
return -1;
ldata = (unsigned long*)args;
for (i = 0; i < nitems; i++) {
if (ldata[i] == wanted)
retval = 0;
if (debug) {
name = XGetAtomName(dpy,ldata[i]);
fprintf(stderr,"wm cap: %s\n",name);
XFree(name);
}
}
XFree(ldata);
return retval;
}
static int
check_atom_present(Display *dpy, Window root, Atom check)
{
Atom type;
int format;
unsigned long nitems, bytesafter;
unsigned char *args;
if (Success != XGetWindowProperty
(dpy, root, check, 0, (65536 / sizeof(long)), False,
AnyPropertyType, &type, &format, &nitems, &bytesafter, &args))
return -1;
return 0;
}
#define INIT_ATOM(dpy,atom) atom = XInternAtom(dpy,#atom,False)
static Atom _NET_SUPPORTED;
static Atom _NET_WM_STATE_ABOVE;
static Atom KWIN_RUNNING;
void detect_desktop(void)
{
Display *dpy = gdk_x11_display_get_xdisplay(gdk_display_get_default());
Window root = DefaultRootWindow(dpy);
if (0) {
INIT_ATOM(dpy, _NET_SUPPORTED);
INIT_ATOM(dpy, _NET_WM_STATE_ABOVE);
check_wm_capability(dpy, root, _NET_SUPPORTED, _NET_WM_STATE_ABOVE);
}
INIT_ATOM(dpy, KWIN_RUNNING);
if (0 == check_atom_present(dpy, root, KWIN_RUNNING))
desktop_kde = 1;
if (desktop_kde)
fprintf(stderr,"Desktop: KDE\n");
if (desktop_gnome)
fprintf(stderr,"Desktop: gnome\n");
}
/* ------------------------------------------------------------------ */
int run_application(int do_wait, const char *app, ...)
{
va_list args;
char *argv[64];
int status, rc, i;
pid_t pid;
while (waitpid(-1, &status, WNOHANG) > 0)
/* collect zombies */;
if (debug)
fprintf(stderr,"%s: %s |", __FUNCTION__, app);
va_start(args, app);
for (i = 0; i < array_size(argv); i++) {
argv[i] = va_arg(args, char*);
if (NULL == argv[i])
break;
if (debug)
fprintf(stderr,"%s \"%s\"", (0 == i) ? "" : ",", argv[i]);
}
va_end(args);
if (debug)
fprintf(stderr,"\n");
if (array_size(argv) == i) {
fprintf(stderr,"%s: oops: argv too small\n", __FUNCTION__);
return -1;
}
if (0 == (pid = fork())) {
/* child */
execvp(app, argv);
fprintf(stderr,"%s: execvp(%s): %s\n", __FUNCTION__,
app, strerror(errno));
exit(1);
}
if (!do_wait)
return 0;
rc = waitpid(pid, &status, 0);
if (rc != pid) {
/* Huh? */
fprintf(stderr,"%s: waidpid(%d): %s\n", __FUNCTION__,
pid, strerror(errno));
exit(1);
}
if (!WIFEXITED(status))
return -1;
return WEXITSTATUS(status);
}
int open_vnc_session(char *host, int screen)
{
char display[64];
char httpurl[64];
snprintf(display, sizeof(display), "%s:%d", host, screen);
snprintf(httpurl, sizeof(httpurl), "http://%s:%d/", host, 5800 + screen);
if (app_have_vncviewer)
return run_application(0, "vncviewer", "vncviewer", display, NULL);
if (app_have_krdc)
return run_application(0, "krdc", "krdc", display, NULL);
if (app_have_kfmclient)
return run_application(0, "kfmclient", "kfmclient", "openURL", httpurl, NULL);
if (app_have_firefox)
return run_application(0, "firefox", "firefox", httpurl, NULL);
snprintf(app_error, sizeof(app_error),
"need vncviewer or krdc, please install\n");
return -1;
}
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