Mercurial > sdl-ios-xcode
annotate src/video/maccommon/SDL_macmouse.c @ 4355:9b464226e541 SDL-1.2
Fixed bug #855
Ludwig Nussel 2009-10-18 06:31:52 PDT
an mprotect call was added to fix bug 528. However that results in a buffer
that allows writing and code execution. Ie the no-execute security features of
modern operating systems are defeated this way. Two mprotect calls are needed.
One to make the buffer executable but not writeable when done and another one
to make the buffer writeable again if the content needs to be changed.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 18 Oct 2009 17:31:37 +0000 |
| parents | a1b03ba2fcd0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
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The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails:
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24 #if defined(__APPLE__) && defined(__MACH__) |
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25 #include <Carbon/Carbon.h> |
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26 #elif TARGET_API_MAC_CARBON && (UNIVERSAL_INTERFACES_VERSION > 0x0335) |
| 0 | 27 #include <Carbon.h> |
| 28 #else | |
| 29 #include <Quickdraw.h> | |
| 30 #endif | |
| 31 | |
| 32 /* Routines that are not supported by the Carbon API... */ | |
| 33 #if !TARGET_API_MAC_CARBON | |
| 34 #include <CursorDevices.h> | |
| 35 #endif | |
| 36 | |
| 37 #include "SDL_mouse.h" | |
| 38 #include "SDL_macmouse_c.h" | |
| 39 | |
| 40 | |
| 41 /* The implementation dependent data for the window manager cursor */ | |
| 42 struct WMcursor { | |
| 43 Cursor curs; | |
| 44 }; | |
| 45 | |
| 46 | |
| 47 void Mac_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 48 { | |
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49 SDL_free(cursor); |
| 0 | 50 } |
| 51 | |
| 52 WMcursor *Mac_CreateWMCursor(_THIS, | |
| 53 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 54 { | |
| 55 WMcursor *cursor; | |
| 56 int row, bytes; | |
| 57 | |
| 58 /* Allocate the cursor memory */ | |
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59 cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor)); |
| 0 | 60 if ( cursor == NULL ) { |
| 61 SDL_OutOfMemory(); | |
| 62 return(NULL); | |
| 63 } | |
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64 SDL_memset(cursor, 0, sizeof(*cursor)); |
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65 |
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66 if (w > 16) |
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67 w = 16; |
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68 |
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69 if (h > 16) |
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parents:
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70 h = 16; |
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71 |
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Sam Lantinga <slouken@libsdl.org>
parents:
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72 bytes = (w+7)/8; |
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Added Max's patches for building MacOS X apps on command line
Sam Lantinga <slouken@libsdl.org>
parents:
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73 |
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74 for ( row=0; row<h; ++row ) { |
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Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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75 SDL_memcpy(&cursor->curs.data[row], data, bytes); |
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76 data += bytes; |
| 0 | 77 } |
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parents:
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78 for ( row=0; row<h; ++row ) { |
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1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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79 SDL_memcpy(&cursor->curs.mask[row], mask, bytes); |
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168
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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80 mask += bytes; |
| 0 | 81 } |
| 82 cursor->curs.hotSpot.h = hot_x; | |
| 83 cursor->curs.hotSpot.v = hot_y; | |
| 84 | |
| 85 /* That was easy. :) */ | |
| 86 return(cursor); | |
| 87 } | |
| 88 | |
| 89 int Mac_cursor_showing = 1; | |
| 90 | |
| 91 int Mac_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 92 { | |
| 93 if ( cursor == NULL ) { | |
| 94 if ( Mac_cursor_showing ) { | |
| 95 HideCursor(); | |
| 96 Mac_cursor_showing = 0; | |
| 97 } | |
| 98 } else { | |
| 99 SetCursor(&cursor->curs); | |
| 100 if ( ! Mac_cursor_showing ) { | |
| 101 ShowCursor(); | |
| 102 Mac_cursor_showing = 1; | |
| 103 } | |
| 104 } | |
| 105 return(1); | |
| 106 } | |
| 107 | |
| 108 void Mac_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 109 { | |
| 110 #if !TARGET_API_MAC_CARBON | |
| 111 CursorDevice *cursordevice; | |
| 112 | |
| 113 cursordevice = nil; | |
| 114 CursorDeviceNextDevice(&cursordevice); | |
| 115 if ( cursordevice != nil ) { | |
| 116 WindowPtr saveport; | |
| 117 Point where; | |
| 118 | |
| 119 GetPort(&saveport); | |
| 120 SetPort(SDL_Window); | |
| 121 where.h = x; | |
| 122 where.v = y; | |
| 123 LocalToGlobal(&where); | |
| 124 SetPort(saveport); | |
| 125 CursorDeviceMoveTo(cursordevice, where.h, where.v); | |
| 126 } | |
| 127 #endif /* !TARGET_API_MAC_CARBON */ | |
| 128 } | |
| 129 |