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