Add patch that contain Mali fixes.
[deb_xorg-server.git] / glx / clientinfo.c
1 /*
2 * Copyright © 2011 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23 #ifdef HAVE_DIX_CONFIG_H
24 #include <dix-config.h>
25 #endif
26
27 #include "glxserver.h"
28 #include "indirect_dispatch.h"
29 #include "glxbyteorder.h"
30 #include "unpack.h"
31
32 static int
33 set_client_info(__GLXclientState * cl, xGLXSetClientInfoARBReq * req,
34 unsigned bytes_per_version)
35 {
36 char *gl_extensions;
37 char *glx_extensions;
38
39 /* Verify that the size of the packet matches the size inferred from the
40 * sizes specified for the various fields.
41 */
42 const unsigned expected_size = sz_xGLXSetClientInfoARBReq
43 + (req->numVersions * bytes_per_version)
44 + __GLX_PAD(req->numGLExtensionBytes)
45 + __GLX_PAD(req->numGLXExtensionBytes);
46
47 if (req->length != (expected_size / 4))
48 return BadLength;
49
50 /* Verify that the actual length of the GL extension string matches what's
51 * encoded in protocol packet.
52 */
53 gl_extensions = (char *) (req + 1) + (req->numVersions * bytes_per_version);
54 if (req->numGLExtensionBytes != 0
55 && memchr(gl_extensions, 0,
56 __GLX_PAD(req->numGLExtensionBytes)) == NULL)
57 return BadLength;
58
59 /* Verify that the actual length of the GLX extension string matches
60 * what's encoded in protocol packet.
61 */
62 glx_extensions = gl_extensions + __GLX_PAD(req->numGLExtensionBytes);
63 if (req->numGLXExtensionBytes != 0
64 && memchr(glx_extensions, 0,
65 __GLX_PAD(req->numGLXExtensionBytes)) == NULL)
66 return BadLength;
67
68 free(cl->GLClientextensions);
69 cl->GLClientextensions = strdup(gl_extensions);
70
71 return 0;
72 }
73
74 int
75 __glXDisp_SetClientInfoARB(__GLXclientState * cl, GLbyte * pc)
76 {
77 return set_client_info(cl, (xGLXSetClientInfoARBReq *) pc, 8);
78 }
79
80 int
81 __glXDispSwap_SetClientInfoARB(__GLXclientState * cl, GLbyte * pc)
82 {
83 xGLXSetClientInfoARBReq *req = (xGLXSetClientInfoARBReq *) pc;
84
85 req->length = bswap_16(req->length);
86 req->numVersions = bswap_32(req->numVersions);
87 req->numGLExtensionBytes = bswap_32(req->numGLExtensionBytes);
88 req->numGLXExtensionBytes = bswap_32(req->numGLXExtensionBytes);
89
90 return __glXDisp_SetClientInfoARB(cl, pc);
91 }
92
93 int
94 __glXDisp_SetClientInfo2ARB(__GLXclientState * cl, GLbyte * pc)
95 {
96 return set_client_info(cl, (xGLXSetClientInfoARBReq *) pc, 12);
97 }
98
99 int
100 __glXDispSwap_SetClientInfo2ARB(__GLXclientState * cl, GLbyte * pc)
101 {
102 xGLXSetClientInfoARBReq *req = (xGLXSetClientInfoARBReq *) pc;
103
104 req->length = bswap_16(req->length);
105 req->numVersions = bswap_32(req->numVersions);
106 req->numGLExtensionBytes = bswap_32(req->numGLExtensionBytes);
107 req->numGLXExtensionBytes = bswap_32(req->numGLXExtensionBytes);
108
109 return __glXDisp_SetClientInfo2ARB(cl, pc);
110 }