diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/nxagent/X/NXextension.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/nxagent/X/NXextension.c | 508 |
1 files changed, 0 insertions, 508 deletions
diff --git a/nx-X11/programs/Xserver/hw/nxagent/X/NXextension.c b/nx-X11/programs/Xserver/hw/nxagent/X/NXextension.c deleted file mode 100644 index ead9b9d28..000000000 --- a/nx-X11/programs/Xserver/hw/nxagent/X/NXextension.c +++ /dev/null @@ -1,508 +0,0 @@ -/**************************************************************************/ -/* */ -/* Copyright (c) 2001, 2011 NoMachine, http://www.nomachine.com/. */ -/* */ -/* NXAGENT, NX protocol compression and NX extensions to this software */ -/* are copyright of NoMachine. Redistribution and use of the present */ -/* software is allowed according to terms specified in the file LICENSE */ -/* which comes in the source distribution. */ -/* */ -/* Check http://www.nomachine.com/licensing.html for applicability. */ -/* */ -/* NX and NoMachine are trademarks of Medialogic S.p.A. */ -/* */ -/* All rights reserved. */ -/* */ -/**************************************************************************/ - -/* $XFree86: xc/programs/Xserver/dix/extension.c,v 3.11 2001/12/14 19:59:31 dawes Exp $ */ -/*********************************************************** - -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. - -******************************************************************/ -/* $Xorg: extension.c,v 1.4 2001/02/09 02:04:40 xorgcvs Exp $ */ - -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#include <X11/X.h> -#define NEED_EVENTS -#define NEED_REPLIES -#include <X11/Xproto.h> -#include "misc.h" -#include "dixstruct.h" -#include "extnsionst.h" -#include "gcstruct.h" -#include "scrnintstr.h" -#include "../../dix/dispatch.h" -#ifdef XCSECURITY -#define _SECURITY_SERVER -#include <X11/extensions/security.h> -#endif -#ifdef LBX -#include "lbxserve.h" -#endif - -#include "Trap.h" - -#define EXTENSION_BASE 128 -#define EXTENSION_EVENT_BASE 64 -#define LAST_EVENT 128 -#define LAST_ERROR 255 - -ScreenProcEntry AuxillaryScreenProcs[MAXSCREENS]; - -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; - register ExtensionEntry *ext, **newexts; - - if (!MainProc || !SwappedMainProc || !CloseDownProc || !MinorOpcodeProc) - return((ExtensionEntry *) NULL); - if ((lastEvent + NumEvents > LAST_EVENT) || - (unsigned)(lastError + NumErrors > LAST_ERROR)) - return((ExtensionEntry *) NULL); - - ext = (ExtensionEntry *) xalloc(sizeof(ExtensionEntry)); - if (!ext) - return((ExtensionEntry *) NULL); - ext->name = (char *)xalloc(strlen(name) + 1); - ext->num_aliases = 0; - ext->aliases = (char **)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; - } -#ifdef XCSECURITY - ext->secure = FALSE; -#endif - -#ifdef LBX - (void) LbxAddExtension(name, ext->base, ext->eventBase, ext->errorBase); -#endif - return(ext); -} - -Bool AddExtensionAlias(char *alias, ExtensionEntry *ext) -{ - char *name; - char **aliases; - - aliases = (char **)xrealloc(ext->aliases, - (ext->num_aliases + 1) * sizeof(char *)); - if (!aliases) - return FALSE; - ext->aliases = aliases; - name = (char *)xalloc(strlen(alias) + 1); - if (!name) - return FALSE; - strcpy(name, alias); - ext->aliases[ext->num_aliases] = name; - ext->num_aliases++; -#ifdef LBX - return LbxAddExtensionAlias(ext->index, alias); -#else - return TRUE; -#endif -} - -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; -} - -void -DeclareExtensionSecurity(char *extname, Bool secure) -{ -#ifdef XCSECURITY - int i = FindExtension(extname, strlen(extname)); - if (i >= 0) - { - int majorop = extensions[i]->base; - extensions[i]->secure = secure; - if (secure) - { - UntrustedProcVector[majorop] = ProcVector[majorop]; - SwappedUntrustedProcVector[majorop] = SwappedProcVector[majorop]; - } - else - { - UntrustedProcVector[majorop] = ProcBadRequest; - SwappedUntrustedProcVector[majorop] = ProcBadRequest; - } - } -#endif -#ifdef LBX - LbxDeclareExtensionSecurity(extname, secure); -#endif -} - -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() -{ - register int i,j; - -#ifdef LBX - LbxCloseDownExtensions(); -#endif - - for (i = NumExtensions - 1; i >= 0; i--) - { - (* 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); - xfree(extensions[i]); - } - xfree(extensions); - extensions = (ExtensionEntry **)NULL; - lastEvent = EXTENSION_EVENT_BASE; - lastError = FirstExtensionError; - for (i=0; i<MAXSCREENS; i++) - { - register ScreenProcEntry *spentry = &AuxillaryScreenProcs[i]; - - while (spentry->num) - { - spentry->num--; - xfree(spentry->procList[spentry->num].name); - } - xfree(spentry->procList); - spentry->procList = (ProcEntryPtr)NULL; - } -} - - -int -ProcQueryExtension(ClientPtr client) -{ - xQueryExtensionReply reply; - int i; - REQUEST(xQueryExtensionReq); - - REQUEST_FIXED_SIZE(xQueryExtensionReq, stuff->nbytes); - - 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 - - /* - * Hide RENDER if our implementation - * is faulty. - */ - - || (nxagentRenderTrap && strcmp(extensions[i]->name, "RENDER") == 0) -#ifdef XCSECURITY - /* don't show insecure extensions to untrusted clients */ - || (client->trustLevel == XSecurityClientUntrusted && - !extensions[i]->secure) -#endif - ) - 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); - - reply.type = X_Reply; - reply.nExtensions = 0; - reply.length = 0; - reply.sequenceNumber = client->sequence; - buffer = NULL; - - if ( NumExtensions ) - { - register int i, j; - - for (i=0; i<NumExtensions; i++) - { -#ifdef XCSECURITY - /* don't show insecure extensions to untrusted clients */ - if (client->trustLevel == XSecurityClientUntrusted && - !extensions[i]->secure) - continue; -#endif - /* - * Hide RENDER if our implementation - * is faulty. - */ - - if (nxagentRenderTrap && strcmp(extensions[i]->name, "RENDER") == 0) - 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 = (total_length + 3) >> 2; - buffer = bufptr = (char *)ALLOCATE_LOCAL(total_length); - if (!buffer) - return(BadAlloc); - for (i=0; i<NumExtensions; i++) - { - int len; -#ifdef XCSECURITY - if (client->trustLevel == XSecurityClientUntrusted && - !extensions[i]->secure) - continue; -#endif - *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); - DEALLOCATE_LOCAL(buffer); - } - return(client->noClientException); -} - - -ExtensionLookupProc -LookupProc(char *name, GCPtr pGC) -{ - register int i; - register ScreenProcEntry *spentry; - spentry = &AuxillaryScreenProcs[pGC->pScreen->myNum]; - if (spentry->num) - { - for (i = 0; i < spentry->num; i++) - if (strcmp(name, spentry->procList[i].name) == 0) - return(spentry->procList[i].proc); - } - return (ExtensionLookupProc)NULL; -} - -Bool -RegisterProc(char *name, GC *pGC, ExtensionLookupProc proc) -{ - return RegisterScreenProc(name, pGC->pScreen, proc); -} - -Bool -RegisterScreenProc(char *name, ScreenPtr pScreen, ExtensionLookupProc proc) -{ - register ScreenProcEntry *spentry; - register ProcEntryPtr procEntry = (ProcEntryPtr)NULL; - char *newname; - int i; - - spentry = &AuxillaryScreenProcs[pScreen->myNum]; - /* first replace duplicates */ - if (spentry->num) - { - for (i = 0; i < spentry->num; i++) - if (strcmp(name, spentry->procList[i].name) == 0) - { - procEntry = &spentry->procList[i]; - break; - } - } - if (procEntry) - procEntry->proc = proc; - else - { - newname = (char *)xalloc(strlen(name)+1); - if (!newname) - return FALSE; - procEntry = (ProcEntryPtr) - xrealloc(spentry->procList, - sizeof(ProcEntryRec) * (spentry->num+1)); - if (!procEntry) - { - xfree(newname); - return FALSE; - } - spentry->procList = procEntry; - procEntry += spentry->num; - procEntry->name = newname; - strcpy(newname, name); - procEntry->proc = proc; - spentry->num++; - } - return TRUE; -} |