119 lines
4.0 KiB
C
119 lines
4.0 KiB
C
/*
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* Copyright © 2011 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <dix-config.h>
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#include "misc.h"
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#include "glxserver.h"
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#include "indirect_dispatch.h"
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#include "unpack.h"
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static int
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set_client_info(__GLXclientState * cl, xGLXSetClientInfoARBReq * req,
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unsigned bytes_per_version)
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{
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ClientPtr client = cl->client;
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char *gl_extensions;
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char *glx_extensions;
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int size;
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REQUEST_AT_LEAST_SIZE(xGLXSetClientInfoARBReq);
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/* Verify that the size of the packet matches the size inferred from the
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* sizes specified for the various fields.
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*/
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size = sizeof(xGLXSetClientInfoARBReq);
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size = safe_add(size, safe_mul(req->numVersions, bytes_per_version));
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size = safe_add(size, safe_pad(req->numGLExtensionBytes));
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size = safe_add(size, safe_pad(req->numGLXExtensionBytes));
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if (size < 0 || req->length != (size / 4))
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return BadLength;
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/* Verify that the actual length of the GL extension string matches what's
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* encoded in protocol packet.
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*/
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gl_extensions = (char *) (req + 1) + (req->numVersions * bytes_per_version);
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if (req->numGLExtensionBytes != 0
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&& memchr(gl_extensions, 0,
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__GLX_PAD(req->numGLExtensionBytes)) == NULL)
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return BadLength;
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/* Verify that the actual length of the GLX extension string matches
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* what's encoded in protocol packet.
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*/
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glx_extensions = gl_extensions + __GLX_PAD(req->numGLExtensionBytes);
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if (req->numGLXExtensionBytes != 0
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&& memchr(glx_extensions, 0,
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__GLX_PAD(req->numGLXExtensionBytes)) == NULL)
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return BadLength;
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free(cl->GLClientextensions);
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cl->GLClientextensions = strdup(gl_extensions);
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return 0;
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}
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int
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__glXDisp_SetClientInfoARB(__GLXclientState * cl, GLbyte * pc)
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{
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return set_client_info(cl, (xGLXSetClientInfoARBReq *) pc, 8);
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}
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int
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__glXDispSwap_SetClientInfoARB(__GLXclientState * cl, GLbyte * pc)
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{
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ClientPtr client = cl->client;
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xGLXSetClientInfoARBReq *req = (xGLXSetClientInfoARBReq *) pc;
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REQUEST_AT_LEAST_SIZE(xGLXSetClientInfoARBReq);
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req->length = bswap_16(req->length);
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req->numVersions = bswap_32(req->numVersions);
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req->numGLExtensionBytes = bswap_32(req->numGLExtensionBytes);
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req->numGLXExtensionBytes = bswap_32(req->numGLXExtensionBytes);
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return __glXDisp_SetClientInfoARB(cl, pc);
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}
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int
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__glXDisp_SetClientInfo2ARB(__GLXclientState * cl, GLbyte * pc)
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{
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return set_client_info(cl, (xGLXSetClientInfoARBReq *) pc, 12);
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}
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int
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__glXDispSwap_SetClientInfo2ARB(__GLXclientState * cl, GLbyte * pc)
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{
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ClientPtr client = cl->client;
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xGLXSetClientInfoARBReq *req = (xGLXSetClientInfoARBReq *) pc;
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REQUEST_AT_LEAST_SIZE(xGLXSetClientInfoARBReq);
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req->length = bswap_16(req->length);
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req->numVersions = bswap_32(req->numVersions);
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req->numGLExtensionBytes = bswap_32(req->numGLExtensionBytes);
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req->numGLXExtensionBytes = bswap_32(req->numGLXExtensionBytes);
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return __glXDisp_SetClientInfo2ARB(cl, pc);
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}
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