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-rw-r--r--xorg-server/dix/extension.c716
1 files changed, 358 insertions, 358 deletions
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 <dix-config.h>
-#endif
-
-#include <X11/X.h>
-#include <X11/Xproto.h>
-#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; i<NumExtensions; i++)
- {
- if ((strlen(extensions[i]->name) == 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; i<NumExtensions; i++)
- {
- /* call callbacks to find out whether to show extension */
- if (XaceHook(XACE_EXT_ACCESS, client, extensions[i]) != Success)
- continue;
-
- total_length += strlen(extensions[i]->name) + 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; i<NumExtensions; i++)
- {
- int len;
- if (XaceHook(XACE_EXT_ACCESS, client, extensions[i]) != Success)
- continue;
-
- *bufptr++ = len = strlen(extensions[i]->name);
- 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 <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#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; i<NumExtensions; i++)
+ {
+ if ((strlen(extensions[i]->name) == 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; i<NumExtensions; i++)
+ {
+ /* call callbacks to find out whether to show extension */
+ if (XaceHook(XACE_EXT_ACCESS, client, extensions[i]) != Success)
+ continue;
+
+ total_length += strlen(extensions[i]->name) + 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; i<NumExtensions; i++)
+ {
+ int len;
+ if (XaceHook(XACE_EXT_ACCESS, client, extensions[i]) != Success)
+ continue;
+
+ *bufptr++ = len = strlen(extensions[i]->name);
+ 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;
+}