| 1 | /************************************************************ |
| 2 | |
| 3 | Copyright 1989, 1998 The Open Group |
| 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 | the above copyright notice appear in all copies and that both that |
| 8 | copyright notice and this permission notice appear in supporting |
| 9 | documentation. |
| 10 | |
| 11 | The above copyright notice and this permission notice shall be included in |
| 12 | all copies or substantial portions of the Software. |
| 13 | |
| 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 17 | OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| 18 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 19 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 20 | |
| 21 | Except as contained in this notice, the name of The Open Group shall not be |
| 22 | used in advertising or otherwise to promote the sale, use or other dealings |
| 23 | in this Software without prior written authorization from The Open Group. |
| 24 | |
| 25 | Copyright 1989 by Hewlett-Packard Company, Palo Alto, California. |
| 26 | |
| 27 | All Rights Reserved |
| 28 | |
| 29 | Permission to use, copy, modify, and distribute this software and its |
| 30 | documentation for any purpose and without fee is hereby granted, |
| 31 | provided that the above copyright notice appear in all copies and that |
| 32 | both that copyright notice and this permission notice appear in |
| 33 | supporting documentation, and that the name of Hewlett-Packard not be |
| 34 | used in advertising or publicity pertaining to distribution of the |
| 35 | software without specific, written prior permission. |
| 36 | |
| 37 | HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING |
| 38 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL |
| 39 | HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR |
| 40 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
| 41 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, |
| 42 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
| 43 | SOFTWARE. |
| 44 | |
| 45 | ********************************************************/ |
| 46 | |
| 47 | /*********************************************************************** |
| 48 | * |
| 49 | * Extension function to grab an extension device. |
| 50 | * |
| 51 | */ |
| 52 | |
| 53 | #ifdef HAVE_DIX_CONFIG_H |
| 54 | #include <dix-config.h> |
| 55 | #endif |
| 56 | |
| 57 | #include "inputstr.h" /* DeviceIntPtr */ |
| 58 | #include "windowstr.h" /* window structure */ |
| 59 | #include <X11/extensions/XI.h> |
| 60 | #include <X11/extensions/XIproto.h> |
| 61 | #include "exglobals.h" |
| 62 | #include "dixevents.h" /* GrabDevice */ |
| 63 | |
| 64 | #include "grabdev.h" |
| 65 | |
| 66 | extern XExtEventInfo EventInfo[]; |
| 67 | extern int ExtEventIndex; |
| 68 | |
| 69 | /*********************************************************************** |
| 70 | * |
| 71 | * Swap the request if the requestor has a different byte order than us. |
| 72 | * |
| 73 | */ |
| 74 | |
| 75 | int |
| 76 | SProcXGrabDevice(ClientPtr client) |
| 77 | { |
| 78 | REQUEST(xGrabDeviceReq); |
| 79 | swaps(&stuff->length); |
| 80 | REQUEST_AT_LEAST_SIZE(xGrabDeviceReq); |
| 81 | swapl(&stuff->grabWindow); |
| 82 | swapl(&stuff->time); |
| 83 | swaps(&stuff->event_count); |
| 84 | |
| 85 | if (stuff->length != |
| 86 | bytes_to_int32(sizeof(xGrabDeviceReq)) + stuff->event_count) |
| 87 | return BadLength; |
| 88 | |
| 89 | SwapLongs((CARD32 *) (&stuff[1]), stuff->event_count); |
| 90 | |
| 91 | return (ProcXGrabDevice(client)); |
| 92 | } |
| 93 | |
| 94 | /*********************************************************************** |
| 95 | * |
| 96 | * Grab an extension device. |
| 97 | * |
| 98 | */ |
| 99 | |
| 100 | int |
| 101 | ProcXGrabDevice(ClientPtr client) |
| 102 | { |
| 103 | int rc; |
| 104 | xGrabDeviceReply rep; |
| 105 | DeviceIntPtr dev; |
| 106 | GrabMask mask; |
| 107 | struct tmask tmp[EMASKSIZE]; |
| 108 | |
| 109 | REQUEST(xGrabDeviceReq); |
| 110 | REQUEST_AT_LEAST_SIZE(xGrabDeviceReq); |
| 111 | |
| 112 | if (stuff->length != |
| 113 | bytes_to_int32(sizeof(xGrabDeviceReq)) + stuff->event_count) |
| 114 | return BadLength; |
| 115 | |
| 116 | rep = (xGrabDeviceReply) { |
| 117 | .repType = X_Reply, |
| 118 | .RepType = X_GrabDevice, |
| 119 | .sequenceNumber = client->sequence, |
| 120 | .length = 0, |
| 121 | }; |
| 122 | |
| 123 | rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess); |
| 124 | if (rc != Success) |
| 125 | return rc; |
| 126 | |
| 127 | if ((rc = CreateMaskFromList(client, (XEventClass *) &stuff[1], |
| 128 | stuff->event_count, tmp, dev, |
| 129 | X_GrabDevice)) != Success) |
| 130 | return rc; |
| 131 | |
| 132 | mask.xi = tmp[stuff->deviceid].mask; |
| 133 | |
| 134 | rc = GrabDevice(client, dev, stuff->other_devices_mode, |
| 135 | stuff->this_device_mode, stuff->grabWindow, |
| 136 | stuff->ownerEvents, stuff->time, |
| 137 | &mask, XI, None, None, &rep.status); |
| 138 | |
| 139 | if (rc != Success) |
| 140 | return rc; |
| 141 | |
| 142 | WriteReplyToClient(client, sizeof(xGrabDeviceReply), &rep); |
| 143 | return Success; |
| 144 | } |
| 145 | |
| 146 | /*********************************************************************** |
| 147 | * |
| 148 | * This procedure creates an event mask from a list of XEventClasses. |
| 149 | * |
| 150 | * Procedure is as follows: |
| 151 | * An XEventClass is (deviceid << 8 | eventtype). For each entry in the list, |
| 152 | * get the device. Then run through all available event indices (those are |
| 153 | * set when XI starts up) and binary OR's the device's mask to whatever the |
| 154 | * event mask for the given event type was. |
| 155 | * If an error occurs, it is sent to the client. Errors are generated if |
| 156 | * - if the device given in the event classs is invalid |
| 157 | * - if the device in the class list is not the device given as parameter (no |
| 158 | * error if parameter is NULL) |
| 159 | * |
| 160 | * mask has to be size EMASKSIZE and pre-allocated. |
| 161 | * |
| 162 | * @param client The client to send the error to (if one occurs) |
| 163 | * @param list List of event classes as sent from the client. |
| 164 | * @param count Number of elements in list. |
| 165 | * @param mask Preallocated mask (size EMASKSIZE). |
| 166 | * @param dev The device we're creating masks for. |
| 167 | * @param req The request we're processing. Used to fill in error fields. |
| 168 | */ |
| 169 | |
| 170 | int |
| 171 | CreateMaskFromList(ClientPtr client, XEventClass * list, int count, |
| 172 | struct tmask *mask, DeviceIntPtr dev, int req) |
| 173 | { |
| 174 | int rc, i, j; |
| 175 | int device; |
| 176 | DeviceIntPtr tdev; |
| 177 | |
| 178 | memset(mask, 0, EMASKSIZE * sizeof(struct tmask)); |
| 179 | |
| 180 | for (i = 0; i < count; i++, list++) { |
| 181 | device = *list >> 8; |
| 182 | if (device > 255) |
| 183 | return BadClass; |
| 184 | |
| 185 | rc = dixLookupDevice(&tdev, device, client, DixUseAccess); |
| 186 | if (rc != BadDevice && rc != Success) |
| 187 | return rc; |
| 188 | if (rc == BadDevice || (dev != NULL && tdev != dev)) |
| 189 | return BadClass; |
| 190 | |
| 191 | for (j = 0; j < ExtEventIndex; j++) |
| 192 | if (EventInfo[j].type == (*list & 0xff)) { |
| 193 | mask[device].mask |= EventInfo[j].mask; |
| 194 | mask[device].dev = (Pointer) tdev; |
| 195 | break; |
| 196 | } |
| 197 | } |
| 198 | return Success; |
| 199 | } |
| 200 | |
| 201 | /*********************************************************************** |
| 202 | * |
| 203 | * This procedure writes the reply for the XGrabDevice function, |
| 204 | * if the client and server have a different byte ordering. |
| 205 | * |
| 206 | */ |
| 207 | |
| 208 | void |
| 209 | SRepXGrabDevice(ClientPtr client, int size, xGrabDeviceReply * rep) |
| 210 | { |
| 211 | swaps(&rep->sequenceNumber); |
| 212 | swapl(&rep->length); |
| 213 | WriteToClient(client, size, rep); |
| 214 | } |