| File: | SetWMCW.c |
| Location: | line 92, column 11 |
| Description: | Dereference of null pointer |
| 1 | /* | ||
| 2 | * | ||
| 3 | * Author: Chris D. Peterson, MIT X Consortium | ||
| 4 | */ | ||
| 5 | |||
| 6 | /************************************************************ | ||
| 7 | |||
| 8 | Copyright (c) 1993, Oracle and/or its affiliates. All rights reserved. | ||
| 9 | |||
| 10 | Permission is hereby granted, free of charge, to any person obtaining a | ||
| 11 | copy of this software and associated documentation files (the "Software"), | ||
| 12 | to deal in the Software without restriction, including without limitation | ||
| 13 | the rights to use, copy, modify, merge, publish, distribute, sublicense, | ||
| 14 | and/or sell copies of the Software, and to permit persons to whom the | ||
| 15 | Software is furnished to do so, subject to the following conditions: | ||
| 16 | |||
| 17 | The above copyright notice and this permission notice (including the next | ||
| 18 | paragraph) shall be included in all copies or substantial portions of the | ||
| 19 | Software. | ||
| 20 | |||
| 21 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| 22 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| 23 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | ||
| 24 | THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| 25 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
| 26 | FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | ||
| 27 | DEALINGS IN THE SOFTWARE. | ||
| 28 | |||
| 29 | ********************************************************/ | ||
| 30 | |||
| 31 | /* | ||
| 32 | |||
| 33 | Copyright 1989, 1994, 1998 The Open Group | ||
| 34 | |||
| 35 | Permission to use, copy, modify, distribute, and sell this software and its | ||
| 36 | documentation for any purpose is hereby granted without fee, provided that | ||
| 37 | the above copyright notice appear in all copies and that both that | ||
| 38 | copyright notice and this permission notice appear in supporting | ||
| 39 | documentation. | ||
| 40 | |||
| 41 | The above copyright notice and this permission notice shall be included in | ||
| 42 | all copies or substantial portions of the Software. | ||
| 43 | |||
| 44 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| 45 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| 46 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| 47 | OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN | ||
| 48 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
| 49 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| 50 | |||
| 51 | Except as contained in this notice, the name of The Open Group shall not be | ||
| 52 | used in advertising or otherwise to promote the sale, use or other dealings | ||
| 53 | in this Software without prior written authorization from The Open Group. | ||
| 54 | |||
| 55 | */ | ||
| 56 | |||
| 57 | #ifdef HAVE_CONFIG_H1 | ||
| 58 | #include <config.h> | ||
| 59 | #endif | ||
| 60 | #include "IntrinsicI.h" | ||
| 61 | #include <X11/Xatom.h> | ||
| 62 | |||
| 63 | /* Function Name: XtSetWMColormapWindows | ||
| 64 | * | ||
| 65 | * Description: Sets the value of the WM_COLORMAP_WINDOWS | ||
| 66 | * property on a widget's window. | ||
| 67 | * | ||
| 68 | * Arguments: widget - specifies the widget on whose window the | ||
| 69 | * - WM_COLORMAP_WINDOWS property will be stored. | ||
| 70 | * | ||
| 71 | * list - Specifies a list of widgets whose windows are to be | ||
| 72 | * listed in the WM_COLORMAP_WINDOWS property. | ||
| 73 | * count - Specifies the number of widgets in list. | ||
| 74 | * | ||
| 75 | * Returns: none. | ||
| 76 | */ | ||
| 77 | |||
| 78 | void | ||
| 79 | XtSetWMColormapWindows( | ||
| 80 | Widget widget, | ||
| 81 | Widget *list, | ||
| 82 | Cardinal count) | ||
| 83 | { | ||
| 84 | Window *data; | ||
| 85 | Widget *checked, *top, *temp, hookobj; | ||
| 86 | Cardinal i, j, checked_count; | ||
| 87 | Boolean match; | ||
| 88 | Atom xa_wm_colormap_windows; | ||
| 89 | WIDGET_TO_APPCON(widget)XtAppContext app = (widget && _XtProcessLock ? XtWidgetToApplicationContext (widget) : ((void*)0)); | ||
| 90 | |||
| 91 | LOCK_APP(app)if(app && app->lock)(*app->lock)(app); | ||
| 92 | if ( !XtIsRealized(widget)((((((Object)(widget))->object.widget_class->core_class .class_inited & 0x04) ? (widget) : _XtWindowedAncestor(widget )) ->core.window) != 0L) || (count == 0) ) { | ||
Within the expansion of the macro 'XtIsRealized':
| |||
| 93 | UNLOCK_APP(app)if(app && app->unlock)(*app->unlock)(app); | ||
| 94 | return; | ||
| 95 | } | ||
| 96 | |||
| 97 | top = checked = (Widget *) __XtMalloc( (Cardinal) sizeof(Widget) * count); | ||
| 98 | |||
| 99 | |||
| 100 | /* | ||
| 101 | * The specification calls for only adding the windows that have unique | ||
| 102 | * colormaps to the property to this function, so we will make a pass through | ||
| 103 | * the widget list removing all the widgets with non-unique colormaps. | ||
| 104 | * | ||
| 105 | * We will also remove any unrealized widgets from the list at this time. | ||
| 106 | */ | ||
| 107 | |||
| 108 | for (checked_count = 0, i = 0; i < count; i++) { | ||
| 109 | if (!XtIsRealized(list[i])((((((Object)(list[i]))->object.widget_class->core_class .class_inited & 0x04) ? (list[i]) : _XtWindowedAncestor(list [i])) ->core.window) != 0L)) continue; | ||
| 110 | |||
| 111 | *checked = list[i]; | ||
| 112 | match = FALSE0; | ||
| 113 | |||
| 114 | /* | ||
| 115 | * Don't check first element for matching colormap since there is nothing | ||
| 116 | * to check it against. | ||
| 117 | */ | ||
| 118 | |||
| 119 | if (checked != top) | ||
| 120 | for (j = 0, temp = top; j < checked_count ; j++, temp++) | ||
| 121 | if ( (*temp)->core.colormap == (*checked)->core.colormap) { | ||
| 122 | match = TRUE1; | ||
| 123 | break; | ||
| 124 | } | ||
| 125 | |||
| 126 | /* | ||
| 127 | * If no colormap was found to match then add this widget to the linked list. | ||
| 128 | */ | ||
| 129 | |||
| 130 | if (!match) { | ||
| 131 | checked++; | ||
| 132 | checked_count++; | ||
| 133 | } | ||
| 134 | } | ||
| 135 | |||
| 136 | /* | ||
| 137 | * Now that we have the list of widgets we need to convert it to a list of | ||
| 138 | * windows and set the property. | ||
| 139 | */ | ||
| 140 | |||
| 141 | data = (Window *) __XtMalloc( (Cardinal) sizeof(Window) * checked_count); | ||
| 142 | |||
| 143 | for ( i = 0 ; i < checked_count ; i++) | ||
| 144 | data[i] = XtWindow(top[i])((top[i])->core.window); | ||
| 145 | |||
| 146 | xa_wm_colormap_windows = XInternAtom(XtDisplay(widget)(((widget)->core.screen)->display), | ||
| 147 | "WM_COLORMAP_WINDOWS", FALSE0); | ||
| 148 | |||
| 149 | XChangeProperty(XtDisplay(widget)(((widget)->core.screen)->display), XtWindow(widget)((widget)->core.window), | ||
| 150 | xa_wm_colormap_windows, XA_WINDOW((Atom) 33), 32, | ||
| 151 | PropModeReplace0, (unsigned char *) data, (int) i); | ||
| 152 | |||
| 153 | hookobj = XtHooksOfDisplay(XtDisplay(widget)(((widget)->core.screen)->display)); | ||
| 154 | if (XtHasCallbacks(hookobj, XtNchangeHook((char*)&XtStrings[2061])) == XtCallbackHasSome) { | ||
| 155 | XtChangeHookDataRec call_data; | ||
| 156 | |||
| 157 | call_data.type = XtHsetWMColormapWindows((char*)&XtStrings[2488]); | ||
| 158 | call_data.widget = widget; | ||
| 159 | call_data.event_data = (XtPointer) list; | ||
| 160 | call_data.num_event_data = count; | ||
| 161 | XtCallCallbackList(hookobj, | ||
| 162 | ((HookObject)hookobj)->hooks.changehook_callbacks, | ||
| 163 | (XtPointer)&call_data); | ||
| 164 | } | ||
| 165 | |||
| 166 | XtFree( (char *) data); | ||
| 167 | XtFree( (char *) top); | ||
| 168 | UNLOCK_APP(app)if(app && app->unlock)(*app->unlock)(app); | ||
| 169 | } |