1 /*
2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdio.h>
27 #include <linux/fb.h>
28 #include <fcntl.h>
29 #ifndef __USE_GNU // required for dladdr() & Dl_info
30 #define __USE_GNU
31 #endif
32 #include <dlfcn.h>
33 #include <sys/ioctl.h>
34
35 #include <jni.h>
36 #include <gtk/gtk.h>
37 #include <gdk/gdk.h>
38
39 #include "wrapped.h"
40
41 extern jboolean gtk_verbose;
42
43 /*
44 * cpp and dlsym don't play nicely together. Do all dynamic loading in C
45 */
46
47 // Note added in Glib 2.36 which is >= our OEL 7.0 version of 2.36
48 // but does not seem to be in the headers properly
49 static GSettingsSchemaSource * (*_g_settings_schema_source_get_default) (void);
50
51 GSettingsSchemaSource * wrapped_g_settings_schema_source_get_default (void)
52 {
53 if(_g_settings_schema_source_get_default == NULL) {
54 _g_settings_schema_source_get_default = dlsym(RTLD_DEFAULT, "g_settings_schema_source_get_default");
55 if (gtk_verbose && _g_settings_schema_source_get_default) {
56 fprintf(stderr, "loaded g_settings_schema_source_get_default\n"); fflush(stderr);
57 }
58 }
59
60 if(_g_settings_schema_source_get_default != NULL) {
61 return (*_g_settings_schema_source_get_default)();
62 }
63
64 return NULL;
65 }
66
67
68 // Note added in Glib 2.36 which is >= our OEL 7.0 version of 2.36
69 // but does not seem to be in the headers properly
70 static GSettingsSchema *
71 (*_g_settings_schema_source_lookup) (GSettingsSchemaSource *source,
72 const gchar *schema_id,
73 gboolean recursive);
74
75 GSettingsSchema *
76 wrapped_g_settings_schema_source_lookup (GSettingsSchemaSource *source,
77 const gchar *schema_id,
78 gboolean recursive)
79 {
80 if(_g_settings_schema_source_lookup == NULL) {
81 _g_settings_schema_source_lookup = dlsym(RTLD_DEFAULT, "g_settings_schema_source_lookup");
82 if (gtk_verbose && _g_settings_schema_source_lookup) {
83 fprintf(stderr, "loaded g_settings_schema_source_lookup\n"); fflush(stderr);
84 }
85 }
86
87 if(_g_settings_schema_source_lookup != NULL) {
88 return (*_g_settings_schema_source_lookup)(source, schema_id, recursive);
89 }
90
91 return NULL;
92 }
93
94 // Note added in Glib 2.40 which is > our OEL 7.0 version of 2.36
95 static gboolean (*_g_settings_schema_has_key) (GSettingsSchema *schema, const gchar *name);
96
97 gboolean wrapped_g_settings_schema_has_key (GSettingsSchema *schema,
98 const gchar *name)
99 {
100 if(_g_settings_schema_has_key == NULL) {
101 _g_settings_schema_has_key = dlsym(RTLD_DEFAULT, "g_settings_schema_has_key");
102 if (gtk_verbose && _g_settings_schema_has_key) {
103 fprintf(stderr, "loaded g_settings_schema_has_key\n"); fflush(stderr);
104 }
105 }
106
107 if(_g_settings_schema_has_key != NULL) {
108 return (*_g_settings_schema_has_key)(schema, name);
109 }
110
111 return 0;
112 }
113
114 static void (*_g_settings_schema_unref) (GSettingsSchema *schema);
115
116 void wrapped_g_settings_schema_unref (GSettingsSchema *schema)
117 {
118 if(_g_settings_schema_unref == NULL) {
119 _g_settings_schema_unref = dlsym(RTLD_DEFAULT, "g_settings_schema_unref");
120 if (gtk_verbose && _g_settings_schema_unref) {
121 fprintf(stderr, "loaded g_settings_schema_unref\n"); fflush(stderr);
122 }
123 }
124
125 if(_g_settings_schema_unref != NULL) {
126 (*_g_settings_schema_unref)(schema);
127 }
128
129 }
130
131 static void (*_gdk_x11_display_set_window_scale) (GdkDisplay *display, gint scale);
132
133 // Note added in libgdk 3.10 which is > our OEL 7.0 version of 3.8
134 void wrapped_gdk_x11_display_set_window_scale (GdkDisplay *display,
135 gint scale)
136 {
137 #if GTK_CHECK_VERSION(3, 0, 0)
138 if(_gdk_x11_display_set_window_scale == NULL) {
139 _gdk_x11_display_set_window_scale = dlsym(RTLD_DEFAULT, "gdk_x11_display_set_window_scale");
140 if (gtk_verbose && _gdk_x11_display_set_window_scale) {
141 fprintf(stderr, "loaded gdk_x11_display_set_window_scale\n"); fflush(stderr);
142 }
143 }
144 #endif
145
146 if(_gdk_x11_display_set_window_scale != NULL) {
147 (*_gdk_x11_display_set_window_scale)(display, scale);
148 }
149 }
150