1 /*
2
3 Copyright 1993, 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
12 in all copies or substantial portions of the Software.
13
14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
17 IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 OTHER DEALINGS IN THE SOFTWARE.
21
22 Except as contained in this notice, the name of The Open Group shall
23 not be used in advertising or otherwise to promote the sale, use or
24 other dealings in this Software without prior written authorization
25 from The Open Group.
26
27 */
28
29 #ifdef HAVE_DIX_CONFIG_H
30 #include <dix-config.h>
31 #endif
32
33 #include <X11/X.h>
34 #include <X11/Xproto.h>
35 #include "misc.h"
36 #include "os.h"
37 #include "dixstruct.h"
38 #include "extnsionst.h"
39 #include "swaprep.h"
40 #include <X11/extensions/xcmiscproto.h>
41 #include "extinit.h"
42
43 #include <stdint.h>
44
45 static int
ProcXCMiscGetVersion(ClientPtr client)46 ProcXCMiscGetVersion(ClientPtr client)
47 {
48 xXCMiscGetVersionReply rep = {
49 .type = X_Reply,
50 .sequenceNumber = client->sequence,
51 .length = 0,
52 .majorVersion = XCMiscMajorVersion,
53 .minorVersion = XCMiscMinorVersion
54 };
55
56 REQUEST_SIZE_MATCH(xXCMiscGetVersionReq);
57
58 if (client->swapped) {
59 swaps(&rep.sequenceNumber);
60 swaps(&rep.majorVersion);
61 swaps(&rep.minorVersion);
62 }
63 WriteToClient(client, sizeof(xXCMiscGetVersionReply), &rep);
64 return Success;
65 }
66
67 static int
ProcXCMiscGetXIDRange(ClientPtr client)68 ProcXCMiscGetXIDRange(ClientPtr client)
69 {
70 xXCMiscGetXIDRangeReply rep;
71 XID min_id, max_id;
72
73 REQUEST_SIZE_MATCH(xXCMiscGetXIDRangeReq);
74 GetXIDRange(client->index, FALSE, &min_id, &max_id);
75 rep = (xXCMiscGetXIDRangeReply) {
76 .type = X_Reply,
77 .sequenceNumber = client->sequence,
78 .length = 0,
79 .start_id = min_id,
80 .count = max_id - min_id + 1
81 };
82 if (client->swapped) {
83 swaps(&rep.sequenceNumber);
84 swapl(&rep.start_id);
85 swapl(&rep.count);
86 }
87 WriteToClient(client, sizeof(xXCMiscGetXIDRangeReply), &rep);
88 return Success;
89 }
90
91 static int
ProcXCMiscGetXIDList(ClientPtr client)92 ProcXCMiscGetXIDList(ClientPtr client)
93 {
94 REQUEST(xXCMiscGetXIDListReq);
95 xXCMiscGetXIDListReply rep;
96 XID *pids;
97 unsigned int count;
98
99 REQUEST_SIZE_MATCH(xXCMiscGetXIDListReq);
100
101 if (stuff->count > UINT32_MAX / sizeof(XID))
102 return BadAlloc;
103
104 pids = xallocarray(stuff->count, sizeof(XID));
105 if (!pids) {
106 return BadAlloc;
107 }
108 count = GetXIDList(client, stuff->count, pids);
109 rep = (xXCMiscGetXIDListReply) {
110 .type = X_Reply,
111 .sequenceNumber = client->sequence,
112 .length = count,
113 .count = count
114 };
115 if (client->swapped) {
116 swaps(&rep.sequenceNumber);
117 swapl(&rep.length);
118 swapl(&rep.count);
119 }
120 WriteToClient(client, sizeof(xXCMiscGetXIDListReply), &rep);
121 if (count) {
122 client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write;
123 WriteSwappedDataToClient(client, count * sizeof(XID), pids);
124 }
125 free(pids);
126 return Success;
127 }
128
129 static int
ProcXCMiscDispatch(ClientPtr client)130 ProcXCMiscDispatch(ClientPtr client)
131 {
132 REQUEST(xReq);
133 switch (stuff->data) {
134 case X_XCMiscGetVersion:
135 return ProcXCMiscGetVersion(client);
136 case X_XCMiscGetXIDRange:
137 return ProcXCMiscGetXIDRange(client);
138 case X_XCMiscGetXIDList:
139 return ProcXCMiscGetXIDList(client);
140 default:
141 return BadRequest;
142 }
143 }
144
145 static int _X_COLD
SProcXCMiscGetVersion(ClientPtr client)146 SProcXCMiscGetVersion(ClientPtr client)
147 {
148 REQUEST(xXCMiscGetVersionReq);
149
150 swaps(&stuff->length);
151 REQUEST_SIZE_MATCH(xXCMiscGetVersionReq);
152 swaps(&stuff->majorVersion);
153 swaps(&stuff->minorVersion);
154 return ProcXCMiscGetVersion(client);
155 }
156
157 static int _X_COLD
SProcXCMiscGetXIDRange(ClientPtr client)158 SProcXCMiscGetXIDRange(ClientPtr client)
159 {
160 REQUEST(xReq);
161
162 swaps(&stuff->length);
163 return ProcXCMiscGetXIDRange(client);
164 }
165
166 static int _X_COLD
SProcXCMiscGetXIDList(ClientPtr client)167 SProcXCMiscGetXIDList(ClientPtr client)
168 {
169 REQUEST(xXCMiscGetXIDListReq);
170 REQUEST_SIZE_MATCH(xXCMiscGetXIDListReq);
171
172 swaps(&stuff->length);
173 swapl(&stuff->count);
174 return ProcXCMiscGetXIDList(client);
175 }
176
177 static int _X_COLD
SProcXCMiscDispatch(ClientPtr client)178 SProcXCMiscDispatch(ClientPtr client)
179 {
180 REQUEST(xReq);
181 switch (stuff->data) {
182 case X_XCMiscGetVersion:
183 return SProcXCMiscGetVersion(client);
184 case X_XCMiscGetXIDRange:
185 return SProcXCMiscGetXIDRange(client);
186 case X_XCMiscGetXIDList:
187 return SProcXCMiscGetXIDList(client);
188 default:
189 return BadRequest;
190 }
191 }
192
193 void
XCMiscExtensionInit(void)194 XCMiscExtensionInit(void)
195 {
196 AddExtension(XCMiscExtensionName, 0, 0,
197 ProcXCMiscDispatch, SProcXCMiscDispatch,
198 NULL, StandardMinorOpcode);
199 }
200