Xext/xace.h

   1 /************************************************************
   2
   3 Author: Eamon Walsh <ewalsh@tycho.nsa.gov>
   4
   5 Permission to use, copy, modify, distribute, and sell this software and its
   6 documentation for any purpose is hereby granted without fee, provided that
   7 this permission notice appear in supporting documentation.  This permission
   8 notice shall be included in all copies or substantial portions of the
   9 Software.
  10
  11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  12 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  14 AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  15 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  16 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  17
  18 ********************************************************/
  19
  20 #ifndef _XACE_H
  21 #define _XACE_H
  22
  23 #ifdef XACE
  24
  25 #define XACE_MAJOR_VERSION              2
  26 #define XACE_MINOR_VERSION              0
  27
  28 #include "extnsionst.h"
  29 #include "pixmap.h"
  30 #include "region.h"
  31 #include "window.h"
  32 #include "property.h"
  33 #include "selection.h"
  34
  35 /* Default window background */
  36 #define XaceBackgroundNoneState(w) ((w)->forcedBG ? BackgroundPixel : None)
  37
  38 /* security hooks */
  39 /* Constants used to identify the available security hooks
  40  */
  41 #define XACE_CORE_DISPATCH              0
  42 #define XACE_EXT_DISPATCH               1
  43 #define XACE_RESOURCE_ACCESS            2
  44 #define XACE_DEVICE_ACCESS              3
  45 #define XACE_PROPERTY_ACCESS            4
  46 #define XACE_SEND_ACCESS                5
  47 #define XACE_RECEIVE_ACCESS             6
  48 #define XACE_CLIENT_ACCESS              7
  49 #define XACE_EXT_ACCESS                 8
  50 #define XACE_SERVER_ACCESS              9
  51 #define XACE_SELECTION_ACCESS           10
  52 #define XACE_SCREEN_ACCESS              11
  53 #define XACE_SCREENSAVER_ACCESS         12
  54 #define XACE_AUTH_AVAIL                 13
  55 #define XACE_KEY_AVAIL                  14
  56 #define XACE_NUM_HOOKS                  15
  57
  58 extern CallbackListPtr XaceHooks[XACE_NUM_HOOKS];
  59
  60 /* Entry point for hook functions.  Called by Xserver.
  61  * Required by libdbe and libextmod
  62  */
  63 /* needs to be exported for in-tree modsetting driver, but not part
  64    of public API for external modules */
  65 _X_EXPORT int XaceHook(int hook, ... /* appropriate args for hook */);
  66
  67 /* determine whether any callbacks are present for the XACE hook */
  68 int XaceHookIsSet(int hook);
  69
  70 /* Special-cased hook functions
  71  */
  72 int XaceHookDispatch0(ClientPtr ptr, int major);
  73 #define XaceHookDispatch(c, m) \
  74     ((XaceHooks[XACE_EXT_DISPATCH] && (m) >= EXTENSION_BASE) ? \
  75     XaceHookDispatch0((c), (m)) : \
  76     Success)
  77
  78 int XaceHookPropertyAccess(ClientPtr ptr, WindowPtr pWin, PropertyPtr *ppProp,
  79                            Mask access_mode);
  80 int XaceHookSelectionAccess(ClientPtr ptr, Selection ** ppSel, Mask access_mode);
  81
  82 /* needs to be exported for in-tree modsetting, but not part of public API */
  83 _X_EXPORT int XaceHookResourceAccess(ClientPtr client, XID id, RESTYPE rtype, void *res,
  84                            RESTYPE ptype, void *parent, Mask access_mode);
  85
  86 int XaceHookDeviceAccess(ClientPtr client, DeviceIntPtr dev, Mask access_mode);
  87
  88 int XaceHookSendAccess(ClientPtr client, DeviceIntPtr dev, WindowPtr win,
  89                        xEventPtr ev, int count);
  90 int XaceHookReceiveAccess(ClientPtr client, WindowPtr win, xEventPtr ev, int count);
  91 int XaceHookClientAccess(ClientPtr client, ClientPtr target, Mask access_mode);
  92 int XaceHookExtAccess(ClientPtr client, ExtensionEntry *ext);
  93 int XaceHookServerAccess(ClientPtr client, Mask access_mode);
  94 int XaceHookScreenAccess(ClientPtr client, ScreenPtr screen, Mask access_mode);
  95 int XaceHookScreensaverAccess(ClientPtr client, ScreenPtr screen, Mask access_mode);
  96 int XaceHookAuthAvail(ClientPtr client, XID authId);
  97 int XaceHookKeyAvail(xEventPtr ev, DeviceIntPtr dev, int count);
  98
  99
 100 /* Register a callback for a given hook.
 101  */
 102 #define XaceRegisterCallback(hook,callback,data) \
 103     AddCallback(XaceHooks+(hook), callback, data)
 104
 105 /* Unregister an existing callback for a given hook.
 106  */
 107 #define XaceDeleteCallback(hook,callback,data) \
 108     DeleteCallback(XaceHooks+(hook), callback, data)
 109
 110 /* XTrans wrappers for use by security modules
 111  */
 112 int XaceGetConnectionNumber(ClientPtr ptr);
 113 int XaceIsLocal(ClientPtr ptr);
 114
 115 /* From the original Security extension...
 116  */
 117
 118 void XaceCensorImage(ClientPtr client,
 119                      RegionPtr pVisibleRegion,
 120                      long widthBytesLine,
 121                      DrawablePtr pDraw,
 122                      int x, int y, int w, int h,
 123                      unsigned int format, char *pBuf);
 124
 125 #else                           /* XACE */
 126
 127 /* Default window background */
 128 #define XaceBackgroundNoneState(w)              None
 129
 130 /* Define calls away when XACE is not being built. */
 131
 132 #ifdef __GNUC__
 133 #define XaceHookIsSet(args...) 0
 134 #define XaceHookDispatch(args...) Success
 135 #define XaceHookPropertyAccess(args...) Success
 136 #define XaceHookSelectionAccess(args...) Success
 137 #define XaceCensorImage(args...) { ; }
 138 #else
 139 #define XaceHookIsSet(...) 0
 140 #define XaceHookDispatch(...) Success
 141 #define XaceHookPropertyAccess(...) Success
 142 #define XaceHookSelectionAccess(...) Success
 143 #define XaceCensorImage(...) { ; }
 144 #endif
 145
 146 #endif                          /* XACE */
 147
 148 #endif                          /* _XACE_H */