/* $Xorg: extensions.c,v 1.4 2001/02/09 02:05:42 xorgcvs Exp $ */ /* * font server extensions */ /* Copyright 1990, 1991, 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 1990, 1991 Network Computing Devices; * Portions Copyright 1987 by Digital Equipment Corporation * * 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, and that the names of Network Computing Devices, or Digital * not be used in advertising or publicity pertaining to distribution * of the software without specific, written prior permission. * * NETWORK COMPUTING DEVICES, AND DIGITAL DISCLAIM ALL WARRANTIES WITH * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES, * OR 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. */ /* $XFree86: xc/programs/xfs/difs/extensions.c,v 1.6 2001/08/01 00:45:04 tsi Exp $ */ #include #include "misc.h" #include "clientstr.h" #include "extentst.h" #include "difs.h" #include "dispatch.h" #define EXTENSION_BASE 128 #define EXTENSION_EVENT_BASE 64 #define LAST_EVENT 128 #define LAST_ERROR 255 static ExtensionEntry **extensions = (ExtensionEntry **) NULL; int lastEvent = EXTENSION_EVENT_BASE; static int lastError = FirstExtensionError; static int NumExtensions = 0; ExtensionEntry * AddExtension( char *name, int num_events, int num_errors, int (*main_proc) (ClientPtr), int (*smain_proc) (ClientPtr), void (*closedown_proc) (struct _ExtensionEntry *), unsigned short (*minorop_proc) (ClientPtr)) { int i; ExtensionEntry *ext, **newexts; if (!main_proc || !smain_proc || !closedown_proc || !minorop_proc) return ((ExtensionEntry *) 0); if ((lastEvent + num_events > LAST_EVENT) || (unsigned) (lastError + num_errors > LAST_ERROR)) return ((ExtensionEntry *) 0); ext = (ExtensionEntry *) fsalloc(sizeof(ExtensionEntry)); if (!ext) return ((ExtensionEntry *) 0); ext->name = (char *) fsalloc(strlen(name) + 1); ext->num_aliases = 0; ext->aliases = (char **) NULL; if (!ext->name) { fsfree(ext); return ((ExtensionEntry *) 0); } strcpy(ext->name, name); i = NumExtensions; newexts = (ExtensionEntry **) fsrealloc(extensions, (i + 1) * sizeof(ExtensionEntry *)); if (!newexts) { fsfree(ext->name); fsfree(ext); return ((ExtensionEntry *) 0); } NumExtensions++; extensions = newexts; extensions[i] = ext; ext->index = i; ext->base = i + EXTENSION_BASE; ext->CloseDown = closedown_proc; ext->MinorOpcode = minorop_proc; ProcVector[i + EXTENSION_BASE] = main_proc; SwappedProcVector[i + EXTENSION_BASE] = smain_proc; if (num_events) { ext->eventBase = lastEvent; ext->eventLast = lastEvent + num_events; lastEvent += num_events; } else { ext->eventBase = 0; ext->eventLast = 0; } if (num_errors) { ext->errorBase = lastError; ext->errorLast = lastError + num_errors; lastError += num_errors; } else { ext->errorBase = 0; ext->errorLast = 0; } return ext; } Bool AddExtensionAlias(char *alias, ExtensionEntry *ext) { char *name; char **aliases; aliases = (char **) fsrealloc(ext->aliases, (ext->num_aliases + 1) * sizeof(char *)); if (!aliases) return FALSE; ext->aliases = aliases; name = (char *) fsalloc(strlen(alias) + 1); if (!name) return FALSE; strcpy(name, alias); ext->aliases[ext->num_aliases++] = name; return TRUE; } unsigned short StandardMinorOpcode(ClientPtr client) { return ((fsReq *) client->requestBuffer)->data; } unsigned short MinorOpcodeOfRequest(ClientPtr client) { unsigned char major; major = ((fsReq *) 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--) { (*extensions[i]->CloseDown) (extensions[i]); NumExtensions = i; fsfree(extensions[i]->name); for (j = extensions[i]->num_aliases; --j >= 0;) fsfree(extensions[i]->aliases[j]); fsfree(extensions[i]->aliases); fsfree(extensions[i]); } fsfree(extensions); extensions = (ExtensionEntry **) NULL; lastEvent = EXTENSION_EVENT_BASE; lastError = FirstExtensionError; } void InitExtensions(void) { } int ProcQueryExtension(ClientPtr client) { fsQueryExtensionReply reply; int i, j; REQUEST(fsQueryExtensionReq); REQUEST_AT_LEAST_SIZE(fsQueryExtensionReq); reply.type = FS_Reply; reply.length = SIZEOF(fsQueryExtensionReply) >> 2; reply.major_opcode = 0; reply.sequenceNumber = client->sequence; if (!NumExtensions) { reply.present = fsFalse; } else { for (i = 0; i < NumExtensions; i++) { if ((strlen(extensions[i]->name) == stuff->nbytes) && !strncmp((char *) &stuff[1], extensions[i]->name, (int) stuff->nbytes)) break; for (j = extensions[i]->num_aliases; --j >= 0;) { if ((strlen(extensions[i]->aliases[j]) == stuff->nbytes) && !strncmp((char *) &stuff[1], extensions[i]->aliases[j], (int) stuff->nbytes)) break; } if (j >= 0) break; } if (i == NumExtensions) { reply.present = fsFalse; } else { reply.present = fsTrue; reply.major_opcode = extensions[i]->base; reply.first_event = extensions[i]->eventBase; reply.first_error = extensions[i]->errorBase; } } WriteReplyToClient(client, SIZEOF(fsQueryExtensionReply), &reply); return client->noClientException; } int ProcListExtensions(ClientPtr client) { fsListExtensionsReply reply; char *bufptr, *buffer; int total_length = 0; REQUEST(fsListExtensionsReq); REQUEST_SIZE_MATCH(fsListExtensionsReq); reply.type = FS_Reply; reply.nExtensions = NumExtensions; reply.length = SIZEOF(fsListExtensionsReply) >> 2; reply.sequenceNumber = client->sequence; buffer = NULL; if (NumExtensions) { int i, j; for (i = 0; i < NumExtensions; i++) { total_length += strlen(extensions[i]->name) + 1; reply.nExtensions += 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) { SendErrToClient(client, FSBadAlloc, NULL); return FSBadAlloc; } for (i = 0; i < NumExtensions; i++) { int len; *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(fsListExtensionsReply), &reply); if (total_length) { WriteToClient(client, total_length, buffer); DEALLOCATE_LOCAL(buffer); } return client->noClientException; }