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/*******************************************************************************
* Copyright (c) 2007, 2020 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
#include "eclipseGtk.h"
#include "eclipseCommon.h"
#include <dlfcn.h>
#include <string.h>
#include <stdlib.h>
struct GTK_PTRS gtk = { 1 }; /* initialize the first field "not_initialized" so we can tell when we've loaded the pointers */
static _TCHAR* minVerMsg1 = _T_ECLIPSE("Starting from the Eclipse 4.16 release, \nGTK+ versions below");
static _TCHAR* minVerMsg2 = _T_ECLIPSE("are not supported.\nGTK+ version found is");
static _TCHAR* minVerTitle = _T_ECLIPSE("Unsupported GTK+ version");
static _TCHAR* gtkInitFail = _T_ECLIPSE("Unable to initialize GTK+\n");
static _TCHAR* upgradeWarning1 = _T_ECLIPSE("\nPlease upgrade GTK+ to minimum version");
static _TCHAR* upgradeWarning2 = _T_ECLIPSE("\nor use an older version of Eclipse.\nClick OK to Exit.");
static int minGtkMajorVersion = 3;
static int minGtkMinorVersion = 22;
static int minGtkMicroVersion = 0;
/* tables to help initialize the function pointers */
/* functions from libgtk-3.so.0*/
static FN_TABLE gtkFunctions[] = {
FN_TABLE_ENTRY(gtk_container_add, 1),
FN_TABLE_ENTRY(gtk_dialog_run, 1),
FN_TABLE_ENTRY(gtk_image_new_from_pixbuf, 1),
FN_TABLE_ENTRY(gtk_init_with_args, 1),
FN_TABLE_ENTRY(gtk_message_dialog_new, 1),
FN_TABLE_ENTRY(gtk_widget_destroy, 1),
FN_TABLE_ENTRY(gtk_widget_destroyed, 1),
FN_TABLE_ENTRY(gtk_widget_show_all, 1),
FN_TABLE_ENTRY(gtk_window_new, 1),
FN_TABLE_ENTRY(gtk_window_resize, 1),
FN_TABLE_ENTRY(gtk_window_set_title, 1),
FN_TABLE_ENTRY(gtk_window_set_decorated, 1),
FN_TABLE_ENTRY(gtk_window_set_type_hint, 1),
FN_TABLE_ENTRY(gtk_window_set_position, 1),
FN_TABLE_ENTRY(gtk_dialog_new_with_buttons, 1),
FN_TABLE_ENTRY(gtk_window_set_resizable, 1),
FN_TABLE_ENTRY(gtk_window_set_default_size, 1),
FN_TABLE_ENTRY(gtk_scrolled_window_new, 1),
FN_TABLE_ENTRY(gtk_text_view_new, 1),
FN_TABLE_ENTRY(gtk_text_view_get_buffer, 1),
FN_TABLE_ENTRY(gtk_text_buffer_set_text, 1),
FN_TABLE_ENTRY(gtk_text_view_set_editable, 1),
FN_TABLE_ENTRY(gtk_dialog_get_content_area, 1),
FN_TABLE_ENTRY(gtk_box_pack_start, 1),
{ NULL, NULL }
};
/* functions from libgdk-3.so.0*/
static FN_TABLE gdkFunctions[] = {
FN_TABLE_ENTRY(gdk_display_get_default, 1),
FN_TABLE_ENTRY(gdk_screen_get_default, 1),
FN_TABLE_ENTRY(gdk_screen_get_resolution, 1),
{ NULL, NULL }
};
/* functions from libgio-2.0.so.0*/
static FN_TABLE gioFunctions[] = {
FN_TABLE_ENTRY(g_dbus_proxy_new_for_bus_sync, 1),
FN_TABLE_ENTRY(g_dbus_proxy_call_sync, 1),
{ NULL, NULL }
};
/* functions from libglib-2.0.so.0*/
static FN_TABLE glibFunctions[] = {
FN_TABLE_ENTRY(g_variant_builder_new, 1),
FN_TABLE_ENTRY(g_variant_builder_add, 1),
FN_TABLE_ENTRY(g_variant_new, 1),
FN_TABLE_ENTRY(g_variant_builder_unref, 1),
FN_TABLE_ENTRY(g_variant_unref, 1),
{ NULL, NULL }
};
/* functions from libgdk_pixbuf-2.0 */
static FN_TABLE pixFunctions[] = {
FN_TABLE_ENTRY(gdk_pixbuf_new_from_file, 1),
FN_TABLE_ENTRY(gdk_pixbuf_get_width, 1),
FN_TABLE_ENTRY(gdk_pixbuf_get_height, 1),
FN_TABLE_ENTRY(gdk_pixbuf_scale_simple, 1),
{ NULL, NULL }
};
/* functions from libgobject-2.0 */
static FN_TABLE gobjFunctions[] = {
FN_TABLE_ENTRY(g_signal_connect_data, 1),
FN_TABLE_ENTRY(g_main_context_iteration, 1),
FN_TABLE_ENTRY(g_object_unref, 1),
FN_TABLE_ENTRY(g_timeout_add, 1),
FN_TABLE_ENTRY(g_error_free, 1),
FN_TABLE_ENTRY(g_type_init, 1),
#ifdef SOLARIS
FN_TABLE_ENTRY(g_string_insert_c, 1),
#endif
{ NULL, NULL }
};
static int loadGtkSymbols( void * library, FN_TABLE * table) {
int i = 0;
void * fn;
for (i = 0; table[i].fnName != NULL; i++) {
fn = findSymbol(library, table[i].fnName);
if (fn != 0) {
*(table[i].fnPtr) = fn;
} else {
if (table[i].required) return -1;
}
}
return 0;
}
int loadGtk() {
#ifdef AIX
#define DLFLAGS RTLD_LAZY | RTLD_MEMBER
#else
#define DLFLAGS RTLD_LAZY
#endif
void *gioLib = NULL, *glibLib = NULL, *gdkLib = NULL, *gtkLib = NULL, *objLib = NULL, *pixLib = NULL;
gdkLib = dlopen(GDK3_LIB, DLFLAGS);
gtkLib = dlopen(GTK3_LIB, DLFLAGS);
if (!gtkLib || !gdkLib) {
const char * (*func)(int, int, int);
dlerror();
*(void**) (&func) = dlsym(gtkLib, "gtk_check_version");
if (dlerror() == NULL && func) {
const char *check = (*func)(minGtkMajorVersion, minGtkMinorVersion, minGtkMicroVersion);
if (check != NULL) {
GtkWidget* dialog;
int gtkMajorVersion, gtkMinorVersion, gtkMicroVersion;
void *gtkMajorPtr, *gtkMinorPtr, *gtkMicroPtr;
/* this code is applicable for GTK+ 2 only*/
dlerror();
gtkMajorPtr = dlsym(gtkLib, "gtk_major_version");
if ((dlerror() != NULL) || (gtkMajorPtr == NULL)) return -1;
gtkMajorVersion = *(int *)gtkMajorPtr;
gtkMinorPtr = dlsym(gtkLib, "gtk_minor_version");
if ((dlerror() != NULL) || (gtkMinorPtr == NULL)) return -1;
gtkMinorVersion = *(int *)gtkMinorPtr;
gtkMicroPtr = dlsym(gtkLib, "gtk_micro_version");
if ((dlerror() != NULL) || (gtkMicroPtr == NULL)) return -1;
gtkMicroVersion = *(int *)gtkMicroPtr;
objLib = dlopen(GOBJ_LIB, DLFLAGS);
pixLib = dlopen(PIXBUF_LIB, DLFLAGS);
gioLib = dlopen(GIO_LIB, DLFLAGS);
glibLib= dlopen(GLIB_LIB, DLFLAGS);
memset(>k, 0, sizeof(struct GTK_PTRS));
if ( gtkLib == NULL || loadGtkSymbols(gtkLib, gtkFunctions) != 0) return -1;
if ( gdkLib == NULL || loadGtkSymbols(gdkLib, gdkFunctions) != 0) return -1;
if ( gioLib == NULL || loadGtkSymbols(gdkLib, gioFunctions) != 0) return -1;
if ( glibLib == NULL || loadGtkSymbols(gdkLib, glibFunctions) != 0) return -1;
if ( pixLib == NULL || loadGtkSymbols(pixLib, pixFunctions) != 0) return -1;
if ( objLib == NULL || loadGtkSymbols(objLib, gobjFunctions) != 0) return -1;
/* Initialize GTK. */
if (gtk.gtk_init_with_args) {
GError *error = NULL;
if (!gtk.gtk_init_with_args(0, NULL, NULL, NULL, NULL, &error)) {
printf("%s", gtkInitFail);
exit (1);
}
}
dialog = gtk.gtk_message_dialog_new(NULL, GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
"%s %d.%d.%d %s %d.%d.%d.\n%s %d.%d.%d %s", minVerMsg1, minGtkMajorVersion,
minGtkMinorVersion, minGtkMicroVersion, minVerMsg2, gtkMajorVersion,
gtkMinorVersion, gtkMicroVersion, upgradeWarning1, minGtkMajorVersion,
minGtkMinorVersion, minGtkMicroVersion, upgradeWarning2);
gtk.gtk_window_set_title((GtkWindow*)dialog, minVerTitle);
gtk.gtk_dialog_run((GtkDialog*)dialog);
gtk.gtk_widget_destroy(dialog);
dlclose(gdkLib);
dlclose(gtkLib);
gdkLib = gtkLib = NULL;
exit (1);
}
}
}
objLib = dlopen(GOBJ_LIB, DLFLAGS);
pixLib = dlopen(PIXBUF_LIB, DLFLAGS);
gioLib = dlopen(GIO_LIB, DLFLAGS);
glibLib= dlopen(GLIB_LIB, DLFLAGS);
/* initialize ptr struct to 0's */
memset(>k, 0, sizeof(struct GTK_PTRS));
if ( gtkLib == NULL || loadGtkSymbols(gtkLib, gtkFunctions) != 0) return -1;
if ( gdkLib == NULL || loadGtkSymbols(gdkLib, gdkFunctions) != 0) return -1;
if ( gioLib == NULL || loadGtkSymbols(gdkLib, gioFunctions) != 0) return -1;
if ( glibLib == NULL || loadGtkSymbols(gdkLib, glibFunctions) != 0) return -1;
if ( pixLib == NULL || loadGtkSymbols(pixLib, pixFunctions) != 0) return -1;
if ( objLib == NULL || loadGtkSymbols(objLib, gobjFunctions) != 0) return -1;
return 0;
}
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