From c38dead3ea7e177728d90cd815cf4eead0c9f534 Mon Sep 17 00:00:00 2001 From: marha Date: Sat, 15 May 2010 16:28:11 +0000 Subject: xserver git update 15/5/2010 --- xorg-server/dix/extension.c | 716 ++++++++++++++++++++++---------------------- 1 file changed, 358 insertions(+), 358 deletions(-) (limited to 'xorg-server/dix/extension.c') diff --git a/xorg-server/dix/extension.c b/xorg-server/dix/extension.c index f34866586..57aef003f 100644 --- a/xorg-server/dix/extension.c +++ b/xorg-server/dix/extension.c @@ -1,358 +1,358 @@ -/*********************************************************** - -Copyright 1987, 1998 The Open Group - -Permission to use, copy, modify, distribute, and sell this software and its -documentation for any purpose is hereby granted without fee, provided that -the above copyright notice appear in all copies and that both that -copyright notice and this permission notice appear in supporting -documentation. - -The above copyright notice and this permission notice 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 -OPEN GROUP 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. - -Except as contained in this notice, the name of The Open Group shall not be -used in advertising or otherwise to promote the sale, use or other dealings -in this Software without prior written authorization from The Open Group. - - -Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of Digital not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. - -******************************************************************/ - -#ifdef HAVE_DIX_CONFIG_H -#include -#endif - -#include -#include -#include "misc.h" -#include "dixstruct.h" -#include "extnsionst.h" -#include "gcstruct.h" -#include "scrnintstr.h" -#include "dispatch.h" -#include "privates.h" -#include "registry.h" -#include "xace.h" - -#define LAST_EVENT 128 -#define LAST_ERROR 255 - -static ExtensionEntry **extensions = (ExtensionEntry **)NULL; - -int lastEvent = EXTENSION_EVENT_BASE; -static int lastError = FirstExtensionError; -static unsigned int NumExtensions = 0; - -ExtensionEntry * -AddExtension(char *name, int NumEvents, int NumErrors, - int (*MainProc)(ClientPtr c1), - int (*SwappedMainProc)(ClientPtr c2), - void (*CloseDownProc)(ExtensionEntry *e), - unsigned short (*MinorOpcodeProc)(ClientPtr c3)) -{ - int i; - ExtensionEntry *ext, **newexts; - - if (!MainProc || !SwappedMainProc || !MinorOpcodeProc) - return((ExtensionEntry *) NULL); - if ((lastEvent + NumEvents > LAST_EVENT) || - (unsigned)(lastError + NumErrors > LAST_ERROR)) { - LogMessage(X_ERROR, "Not enabling extension %s: maximum number of " - "events or errors exceeded.\n", name); - return((ExtensionEntry *) NULL); - } - - ext = xalloc(sizeof(ExtensionEntry)); - if (!ext) - return(NULL); - ext->name = xalloc(strlen(name) + 1); - ext->num_aliases = 0; - ext->aliases = (char **)NULL; - ext->devPrivates = NULL; - if (!ext->name) - { - xfree(ext); - return((ExtensionEntry *) NULL); - } - strcpy(ext->name, name); - i = NumExtensions; - newexts = (ExtensionEntry **) xrealloc(extensions, - (i + 1) * sizeof(ExtensionEntry *)); - if (!newexts) - { - xfree(ext->name); - xfree(ext); - return((ExtensionEntry *) NULL); - } - NumExtensions++; - extensions = newexts; - extensions[i] = ext; - ext->index = i; - ext->base = i + EXTENSION_BASE; - ext->CloseDown = CloseDownProc; - ext->MinorOpcode = MinorOpcodeProc; - ProcVector[i + EXTENSION_BASE] = MainProc; - SwappedProcVector[i + EXTENSION_BASE] = SwappedMainProc; - if (NumEvents) - { - ext->eventBase = lastEvent; - ext->eventLast = lastEvent + NumEvents; - lastEvent += NumEvents; - } - else - { - ext->eventBase = 0; - ext->eventLast = 0; - } - if (NumErrors) - { - ext->errorBase = lastError; - ext->errorLast = lastError + NumErrors; - lastError += NumErrors; - } - else - { - ext->errorBase = 0; - ext->errorLast = 0; - } - - RegisterExtensionNames(ext); - return(ext); -} - -Bool AddExtensionAlias(char *alias, ExtensionEntry *ext) -{ - char *name; - char **aliases; - - if (!ext) - return FALSE ; - aliases = (char **)xrealloc(ext->aliases, - (ext->num_aliases + 1) * sizeof(char *)); - if (!aliases) - return FALSE; - ext->aliases = aliases; - name = xalloc(strlen(alias) + 1); - if (!name) - return FALSE; - strcpy(name, alias); - ext->aliases[ext->num_aliases] = name; - ext->num_aliases++; - return TRUE; -} - -static int -FindExtension(char *extname, int len) -{ - int i, j; - - for (i=0; iname) == len) && - !strncmp(extname, extensions[i]->name, len)) - break; - for (j = extensions[i]->num_aliases; --j >= 0;) - { - if ((strlen(extensions[i]->aliases[j]) == len) && - !strncmp(extname, extensions[i]->aliases[j], len)) - break; - } - if (j >= 0) break; - } - return ((i == NumExtensions) ? -1 : i); -} - -/* - * CheckExtension returns the extensions[] entry for the requested - * extension name. Maybe this could just return a Bool instead? - */ -ExtensionEntry * -CheckExtension(const char *extname) -{ - int n; - - n = FindExtension((char*)extname, strlen(extname)); - if (n != -1) - return extensions[n]; - else - return NULL; -} - -/* - * Added as part of Xace. - */ -ExtensionEntry * -GetExtensionEntry(int major) -{ - if (major < EXTENSION_BASE) - return NULL; - major -= EXTENSION_BASE; - if (major >= NumExtensions) - return NULL; - return extensions[major]; -} - -unsigned short -StandardMinorOpcode(ClientPtr client) -{ - return ((xReq *)client->requestBuffer)->data; -} - -unsigned short -MinorOpcodeOfRequest(ClientPtr client) -{ - unsigned char major; - - major = ((xReq *)client->requestBuffer)->reqType; - if (major < EXTENSION_BASE) - return 0; - major -= EXTENSION_BASE; - if (major >= NumExtensions) - return 0; - return (*extensions[major]->MinorOpcode)(client); -} - -void -CloseDownExtensions(void) -{ - int i,j; - - for (i = NumExtensions - 1; i >= 0; i--) - { - if (extensions[i]->CloseDown) - extensions[i]->CloseDown(extensions[i]); - NumExtensions = i; - xfree(extensions[i]->name); - for (j = extensions[i]->num_aliases; --j >= 0;) - xfree(extensions[i]->aliases[j]); - xfree(extensions[i]->aliases); - dixFreePrivates(extensions[i]->devPrivates); - xfree(extensions[i]); - } - xfree(extensions); - extensions = (ExtensionEntry **)NULL; - lastEvent = EXTENSION_EVENT_BASE; - lastError = FirstExtensionError; -} - -int -ProcQueryExtension(ClientPtr client) -{ - xQueryExtensionReply reply; - int i; - REQUEST(xQueryExtensionReq); - - REQUEST_FIXED_SIZE(xQueryExtensionReq, stuff->nbytes); - - memset(&reply, 0, sizeof(xQueryExtensionReply)); - reply.type = X_Reply; - reply.length = 0; - reply.major_opcode = 0; - reply.sequenceNumber = client->sequence; - - if ( ! NumExtensions ) - reply.present = xFalse; - else - { - i = FindExtension((char *)&stuff[1], stuff->nbytes); - if (i < 0 || XaceHook(XACE_EXT_ACCESS, client, extensions[i])) - reply.present = xFalse; - else - { - reply.present = xTrue; - reply.major_opcode = extensions[i]->base; - reply.first_event = extensions[i]->eventBase; - reply.first_error = extensions[i]->errorBase; - } - } - WriteReplyToClient(client, sizeof(xQueryExtensionReply), &reply); - return(client->noClientException); -} - -int -ProcListExtensions(ClientPtr client) -{ - xListExtensionsReply reply; - char *bufptr, *buffer; - int total_length = 0; - - REQUEST_SIZE_MATCH(xReq); - - memset(&reply, 0, sizeof(xListExtensionsReply)); - reply.type = X_Reply; - reply.nExtensions = 0; - reply.length = 0; - reply.sequenceNumber = client->sequence; - buffer = NULL; - - if ( NumExtensions ) - { - int i, j; - - for (i=0; iname) + 1; - reply.nExtensions += 1 + extensions[i]->num_aliases; - for (j = extensions[i]->num_aliases; --j >= 0;) - total_length += strlen(extensions[i]->aliases[j]) + 1; - } - reply.length = bytes_to_int32(total_length); - buffer = bufptr = xalloc(total_length); - if (!buffer) - return(BadAlloc); - for (i=0; iname); - memmove(bufptr, extensions[i]->name, len); - bufptr += len; - for (j = extensions[i]->num_aliases; --j >= 0;) - { - *bufptr++ = len = strlen(extensions[i]->aliases[j]); - memmove(bufptr, extensions[i]->aliases[j], len); - bufptr += len; - } - } - } - WriteReplyToClient(client, sizeof(xListExtensionsReply), &reply); - if (reply.length) - { - WriteToClient(client, total_length, buffer); - xfree(buffer); - } - return(client->noClientException); -} +/*********************************************************** + +Copyright 1987, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice 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 +OPEN GROUP 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. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + + +Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of Digital not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR +ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS +SOFTWARE. + +******************************************************************/ + +#ifdef HAVE_DIX_CONFIG_H +#include +#endif + +#include +#include +#include "misc.h" +#include "dixstruct.h" +#include "extnsionst.h" +#include "gcstruct.h" +#include "scrnintstr.h" +#include "dispatch.h" +#include "privates.h" +#include "registry.h" +#include "xace.h" + +#define LAST_EVENT 128 +#define LAST_ERROR 255 + +static ExtensionEntry **extensions = (ExtensionEntry **)NULL; + +int lastEvent = EXTENSION_EVENT_BASE; +static int lastError = FirstExtensionError; +static unsigned int NumExtensions = 0; + +ExtensionEntry * +AddExtension(char *name, int NumEvents, int NumErrors, + int (*MainProc)(ClientPtr c1), + int (*SwappedMainProc)(ClientPtr c2), + void (*CloseDownProc)(ExtensionEntry *e), + unsigned short (*MinorOpcodeProc)(ClientPtr c3)) +{ + int i; + ExtensionEntry *ext, **newexts; + + if (!MainProc || !SwappedMainProc || !MinorOpcodeProc) + return((ExtensionEntry *) NULL); + if ((lastEvent + NumEvents > LAST_EVENT) || + (unsigned)(lastError + NumErrors > LAST_ERROR)) { + LogMessage(X_ERROR, "Not enabling extension %s: maximum number of " + "events or errors exceeded.\n", name); + return((ExtensionEntry *) NULL); + } + + ext = malloc(sizeof(ExtensionEntry)); + if (!ext) + return(NULL); + ext->name = malloc(strlen(name) + 1); + ext->num_aliases = 0; + ext->aliases = (char **)NULL; + ext->devPrivates = NULL; + if (!ext->name) + { + free(ext); + return((ExtensionEntry *) NULL); + } + strcpy(ext->name, name); + i = NumExtensions; + newexts = (ExtensionEntry **) realloc(extensions, + (i + 1) * sizeof(ExtensionEntry *)); + if (!newexts) + { + free(ext->name); + free(ext); + return((ExtensionEntry *) NULL); + } + NumExtensions++; + extensions = newexts; + extensions[i] = ext; + ext->index = i; + ext->base = i + EXTENSION_BASE; + ext->CloseDown = CloseDownProc; + ext->MinorOpcode = MinorOpcodeProc; + ProcVector[i + EXTENSION_BASE] = MainProc; + SwappedProcVector[i + EXTENSION_BASE] = SwappedMainProc; + if (NumEvents) + { + ext->eventBase = lastEvent; + ext->eventLast = lastEvent + NumEvents; + lastEvent += NumEvents; + } + else + { + ext->eventBase = 0; + ext->eventLast = 0; + } + if (NumErrors) + { + ext->errorBase = lastError; + ext->errorLast = lastError + NumErrors; + lastError += NumErrors; + } + else + { + ext->errorBase = 0; + ext->errorLast = 0; + } + + RegisterExtensionNames(ext); + return(ext); +} + +Bool AddExtensionAlias(char *alias, ExtensionEntry *ext) +{ + char *name; + char **aliases; + + if (!ext) + return FALSE ; + aliases = (char **)realloc(ext->aliases, + (ext->num_aliases + 1) * sizeof(char *)); + if (!aliases) + return FALSE; + ext->aliases = aliases; + name = malloc(strlen(alias) + 1); + if (!name) + return FALSE; + strcpy(name, alias); + ext->aliases[ext->num_aliases] = name; + ext->num_aliases++; + return TRUE; +} + +static int +FindExtension(char *extname, int len) +{ + int i, j; + + for (i=0; iname) == len) && + !strncmp(extname, extensions[i]->name, len)) + break; + for (j = extensions[i]->num_aliases; --j >= 0;) + { + if ((strlen(extensions[i]->aliases[j]) == len) && + !strncmp(extname, extensions[i]->aliases[j], len)) + break; + } + if (j >= 0) break; + } + return ((i == NumExtensions) ? -1 : i); +} + +/* + * CheckExtension returns the extensions[] entry for the requested + * extension name. Maybe this could just return a Bool instead? + */ +ExtensionEntry * +CheckExtension(const char *extname) +{ + int n; + + n = FindExtension((char*)extname, strlen(extname)); + if (n != -1) + return extensions[n]; + else + return NULL; +} + +/* + * Added as part of Xace. + */ +ExtensionEntry * +GetExtensionEntry(int major) +{ + if (major < EXTENSION_BASE) + return NULL; + major -= EXTENSION_BASE; + if (major >= NumExtensions) + return NULL; + return extensions[major]; +} + +unsigned short +StandardMinorOpcode(ClientPtr client) +{ + return ((xReq *)client->requestBuffer)->data; +} + +unsigned short +MinorOpcodeOfRequest(ClientPtr client) +{ + unsigned char major; + + major = ((xReq *)client->requestBuffer)->reqType; + if (major < EXTENSION_BASE) + return 0; + major -= EXTENSION_BASE; + if (major >= NumExtensions) + return 0; + return (*extensions[major]->MinorOpcode)(client); +} + +void +CloseDownExtensions(void) +{ + int i,j; + + for (i = NumExtensions - 1; i >= 0; i--) + { + if (extensions[i]->CloseDown) + extensions[i]->CloseDown(extensions[i]); + NumExtensions = i; + free(extensions[i]->name); + for (j = extensions[i]->num_aliases; --j >= 0;) + free(extensions[i]->aliases[j]); + free(extensions[i]->aliases); + dixFreePrivates(extensions[i]->devPrivates); + free(extensions[i]); + } + free(extensions); + extensions = (ExtensionEntry **)NULL; + lastEvent = EXTENSION_EVENT_BASE; + lastError = FirstExtensionError; +} + +int +ProcQueryExtension(ClientPtr client) +{ + xQueryExtensionReply reply; + int i; + REQUEST(xQueryExtensionReq); + + REQUEST_FIXED_SIZE(xQueryExtensionReq, stuff->nbytes); + + memset(&reply, 0, sizeof(xQueryExtensionReply)); + reply.type = X_Reply; + reply.length = 0; + reply.major_opcode = 0; + reply.sequenceNumber = client->sequence; + + if ( ! NumExtensions ) + reply.present = xFalse; + else + { + i = FindExtension((char *)&stuff[1], stuff->nbytes); + if (i < 0 || XaceHook(XACE_EXT_ACCESS, client, extensions[i])) + reply.present = xFalse; + else + { + reply.present = xTrue; + reply.major_opcode = extensions[i]->base; + reply.first_event = extensions[i]->eventBase; + reply.first_error = extensions[i]->errorBase; + } + } + WriteReplyToClient(client, sizeof(xQueryExtensionReply), &reply); + return Success; +} + +int +ProcListExtensions(ClientPtr client) +{ + xListExtensionsReply reply; + char *bufptr, *buffer; + int total_length = 0; + + REQUEST_SIZE_MATCH(xReq); + + memset(&reply, 0, sizeof(xListExtensionsReply)); + reply.type = X_Reply; + reply.nExtensions = 0; + reply.length = 0; + reply.sequenceNumber = client->sequence; + buffer = NULL; + + if ( NumExtensions ) + { + int i, j; + + for (i=0; iname) + 1; + reply.nExtensions += 1 + extensions[i]->num_aliases; + for (j = extensions[i]->num_aliases; --j >= 0;) + total_length += strlen(extensions[i]->aliases[j]) + 1; + } + reply.length = bytes_to_int32(total_length); + buffer = bufptr = malloc(total_length); + if (!buffer) + return(BadAlloc); + for (i=0; iname); + memmove(bufptr, extensions[i]->name, len); + bufptr += len; + for (j = extensions[i]->num_aliases; --j >= 0;) + { + *bufptr++ = len = strlen(extensions[i]->aliases[j]); + memmove(bufptr, extensions[i]->aliases[j], len); + bufptr += len; + } + } + } + WriteReplyToClient(client, sizeof(xListExtensionsReply), &reply); + if (reply.length) + { + WriteToClient(client, total_length, buffer); + free(buffer); + } + return Success; +} -- cgit v1.2.3