611 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
			
		
		
	
	
			611 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
| /*
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|  * Copyright 2002 Red Hat Inc., Durham, North Carolina.
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|  *
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|  * All Rights Reserved.
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|  *
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|  * Permission is hereby granted, free of charge, to any person obtaining
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|  * a copy of this software and associated documentation files (the
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|  * "Software"), to deal in the Software without restriction, including
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|  * without limitation on the rights to use, copy, modify, merge,
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|  * publish, distribute, sublicense, and/or sell copies of the Software,
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|  * and to permit persons to whom the Software is furnished to do so,
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|  * subject to the following conditions:
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|  *
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|  * The above copyright notice and this permission notice (including the
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|  * next paragraph) shall be included in all copies or substantial
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|  * portions of the Software.
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|  *
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|  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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|  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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|  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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|  * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
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|  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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|  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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|  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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|  * SOFTWARE.
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|  */
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| 
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| /*
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|  * Authors:
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|  *   Rickard E. (Rik) Faith <faith@redhat.com>
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|  *
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|  */
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| 
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| /** \file
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|  *
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|  * This file provides support routines and helper functions to be used
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|  * by the DMX configuration file parser.
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|  *
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|  * Because the DMX configuration file parsing should be capable of being
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|  * used in a stand-alone fashion (i.e., independent from the DMX server
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|  * source tree), no dependencies on other DMX routines are made. */
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| 
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| #ifdef HAVE_DMX_CONFIG_H
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| #include <dmx-config.h>
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| #endif
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| 
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| #include <stdio.h>
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| #include <stdlib.h>
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| #include <string.h>
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| #include <stdarg.h>
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| #include "dmxparse.h"
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| 
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| /** A general error logging routine that does not depend on the dmxLog
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|  * functions. */
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| void dmxConfigLog(const char *format, ...)
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| {
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|     va_list args;
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|     
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|     va_start(args, format);
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|     vprintf(format, args);      /* RATS: All calls to dmxConfigLog from
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|                                  * dmxparse.c and dmxprint.c use a
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|                                  * trusted format. */
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|     va_end(args);
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| }
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| 
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| void *dmxConfigAlloc(unsigned long bytes)
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| {
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|     void *area = malloc(bytes);
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|     if (!area) {
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|         dmxConfigLog("dmxConfigAlloc: out of memory\n");
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|         return NULL;
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|     }
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|     memset(area, 0, bytes);
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|     return area;
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| }
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| 
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| void *dmxConfigRealloc(void *orig, unsigned long orig_bytes,
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|                        unsigned long bytes)
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| {
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|     unsigned char *area = realloc(orig, bytes);
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|     if (!area) {
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|         dmxConfigLog("dmxConfigRealloc: out of memory\n");
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|         return NULL;
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|     }
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|     memset(area + orig_bytes, 0, bytes - orig_bytes);
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|     return area;
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| }
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| 
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| const char *dmxConfigCopyString(const char *string, int length)
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| {
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|     char *copy;
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|     
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|     if (!length) length = strlen(string);
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|     copy = dmxConfigAlloc(length + 1);
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|     if (length) strncpy(copy, string, length);
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|     copy[length] = '\0';
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|     return copy;
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| }
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| 
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| void dmxConfigFree(void *area)
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| {
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|     if (area) free(area);
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| }
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| 
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| DMXConfigTokenPtr dmxConfigCreateToken(int token, int line,
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|                                        const char *comment)
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| {
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|     DMXConfigTokenPtr pToken = dmxConfigAlloc(sizeof(*pToken));
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|     pToken->token   = token;
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|     pToken->line    = line;
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|     pToken->comment = comment;
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|     return pToken;
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| }
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| 
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| void dmxConfigFreeToken(DMXConfigTokenPtr p)
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| {
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|     if (!p) return;
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|     dmxConfigFree((void *)p->comment);
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|     dmxConfigFree(p);
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| }
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| 
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| DMXConfigStringPtr dmxConfigCreateString(int token, int line,
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|                                          const char *comment,
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|                                          const char *string)
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| {
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|     DMXConfigStringPtr pString = dmxConfigAlloc(sizeof(*pString));
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| 
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|     pString->token   = token;
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|     pString->line    = line;
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|     pString->comment = comment;
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|     pString->string  = string;
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|     return pString;
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| }
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| 
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| void dmxConfigFreeString(DMXConfigStringPtr p)
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| {
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|     DMXConfigStringPtr next;
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| 
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|     if (!p) return;
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|     do {
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|         next = p->next;
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|         dmxConfigFree((void *)p->comment);
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|         dmxConfigFree((void *)p->string);
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|         dmxConfigFree(p);
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|     } while ((p = next));
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| }
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|  
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| DMXConfigNumberPtr dmxConfigCreateNumber(int token, int line,
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|                                          const char *comment,
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|                                          int number)
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| {
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|     DMXConfigNumberPtr pNumber = dmxConfigAlloc(sizeof(*pNumber));
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| 
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|     pNumber->token   = token;
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|     pNumber->line    = line;
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|     pNumber->comment = comment;
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|     pNumber->number  = number;
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|     return pNumber;
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| }
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| 
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| void dmxConfigFreeNumber(DMXConfigNumberPtr p)
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| {
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|     if (!p) return;
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|     dmxConfigFree((void *)p->comment);
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|     dmxConfigFree(p);
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| }
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| 
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| DMXConfigPairPtr dmxConfigCreatePair(int token, int line,
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|                                      const char *comment,
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|                                      int x, int y,
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|                                      int xsign, int ysign)
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| {
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|     DMXConfigPairPtr pPair = dmxConfigAlloc(sizeof(*pPair));
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| 
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|     pPair->token   = token;
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|     pPair->line    = line;
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|     pPair->comment = comment;
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|     pPair->x       = x;
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|     pPair->y       = y;
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|     pPair->xsign   = (xsign < 0) ? -1 : 1;
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|     pPair->ysign   = (ysign < 0) ? -1 : 1;
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|     return pPair;
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| }
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| 
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| void dmxConfigFreePair(DMXConfigPairPtr p)
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| {
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|     if (!p) return;
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|     dmxConfigFree((void *)p->comment);
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|     dmxConfigFree(p);
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| }
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| 
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| DMXConfigCommentPtr dmxConfigCreateComment(int token, int line,
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|                                            const char *comment)
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| {
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|     DMXConfigCommentPtr pComment = dmxConfigAlloc(sizeof(*pComment));
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| 
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|     pComment->token   = token;
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|     pComment->line    = line;
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|     pComment->comment = comment;
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|     return pComment;
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| }
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| 
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| void dmxConfigFreeComment(DMXConfigCommentPtr p)
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| {
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|     if (!p) return;
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|     dmxConfigFree((void *)p->comment);
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|     dmxConfigFree(p);
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| }
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| 
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| DMXConfigPartDimPtr dmxConfigCreatePartDim(DMXConfigPairPtr pDim,
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|                                            DMXConfigPairPtr pOffset)
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| {
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|     DMXConfigPartDimPtr pPart = dmxConfigAlloc(sizeof(*pPart));
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|     pPart->dim    = pDim;
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|     pPart->offset = pOffset;
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|     return pPart;
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| }
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| 
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| void dmxConfigFreePartDim(DMXConfigPartDimPtr p)
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| {
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|     if (!p) return;
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|     dmxConfigFreePair(p->dim);
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|     dmxConfigFreePair(p->offset);
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|     dmxConfigFree(p);
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| }
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| 
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| DMXConfigFullDimPtr dmxConfigCreateFullDim(DMXConfigPartDimPtr pScrn,
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|                                            DMXConfigPartDimPtr pRoot)
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| {
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|     DMXConfigFullDimPtr pFull = dmxConfigAlloc(sizeof(*pFull));
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|     pFull->scrn = pScrn;
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|     pFull->root = pRoot;
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|     return pFull;
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| }
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| 
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| void dmxConfigFreeFullDim(DMXConfigFullDimPtr p)
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| {
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|     if (!p) return;
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|     dmxConfigFreePartDim(p->scrn);
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|     dmxConfigFreePartDim(p->root);
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|     dmxConfigFree(p);
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| }
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| 
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| DMXConfigDisplayPtr dmxConfigCreateDisplay(DMXConfigTokenPtr pStart,
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|                                            DMXConfigStringPtr pName,
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|                                            DMXConfigFullDimPtr pDim,
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|                                            DMXConfigPairPtr pOrigin,
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|                                            DMXConfigTokenPtr pEnd)
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| {
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|     DMXConfigDisplayPtr pDisplay = dmxConfigAlloc(sizeof(*pDisplay));
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| 
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|     memset(pDisplay, 0, sizeof(*pDisplay));
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| 
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|     pDisplay->start          = pStart;
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|     pDisplay->dname          = pName;
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|     pDisplay->dim            = pDim;
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|     pDisplay->origin         = pOrigin;
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|     pDisplay->end            = pEnd;
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| 
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|     pDisplay->name           = pName ? pName->string : NULL;
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|     pDisplay->rootXOrigin    = pOrigin ? pOrigin->x : 0;
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|     pDisplay->rootYOrigin    = pOrigin ? pOrigin->y : 0;
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| 
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|     if (pDim && pDim->scrn && pDim->scrn->dim) {
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|         pDisplay->scrnWidth  = pDim->scrn->dim->x;
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|         pDisplay->scrnHeight = pDim->scrn->dim->y;
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|     }
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|     if (pDim && pDim->scrn && pDim->scrn->offset) {
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|         pDisplay->scrnX      = pDim->scrn->offset->x;
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|         pDisplay->scrnY      = pDim->scrn->offset->y;
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|         pDisplay->scrnXSign  = pDim->scrn->offset->xsign;
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|         pDisplay->scrnYSign  = pDim->scrn->offset->ysign;
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|     }
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|     
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|     if (pDim && pDim->root) {
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|         if (pDim->root->dim) {
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|             pDisplay->rootWidth  = pDim->root->dim->x;
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|             pDisplay->rootHeight = pDim->root->dim->y;
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|         }
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|         if (pDim->root->offset) {
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|             pDisplay->rootX      = pDim->root->offset->x;
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|             pDisplay->rootY      = pDim->root->offset->y;
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|             pDisplay->rootXSign  = pDim->root->offset->xsign;
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|             pDisplay->rootYSign  = pDim->root->offset->ysign;
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|         }
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|     } else {                    /* If no root specification, copy width
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|                                  * and height from scrn -- leave offset
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|                                  * as zero, since it is relative to
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|                                  * scrn. */
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|         pDisplay->rootWidth  = pDisplay->scrnWidth;
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|         pDisplay->rootHeight = pDisplay->scrnHeight;
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|     }
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| 
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| 
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|     return pDisplay;
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| }
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| 
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| void dmxConfigFreeDisplay(DMXConfigDisplayPtr p)
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| {
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|     if (!p) return;
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|     dmxConfigFreeToken(p->start);
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|     dmxConfigFreeString(p->dname);
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|     dmxConfigFreeFullDim(p->dim);
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|     dmxConfigFreeToken(p->end);
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|     dmxConfigFree(p);
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| }
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| 
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| DMXConfigWallPtr dmxConfigCreateWall(DMXConfigTokenPtr pStart,
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|                                      DMXConfigPairPtr pWallDim,
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|                                      DMXConfigPairPtr pDisplayDim,
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|                                      DMXConfigStringPtr pNameList,
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|                                      DMXConfigTokenPtr pEnd)
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| {
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|     DMXConfigWallPtr pWall = dmxConfigAlloc(sizeof(*pWall));
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| 
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|     pWall->start      = pStart;
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|     pWall->wallDim    = pWallDim;
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|     pWall->displayDim = pDisplayDim;
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|     pWall->nameList   = pNameList;
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|     pWall->end        = pEnd;
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| 
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|     pWall->width      = pDisplayDim ? pDisplayDim->x : 0;
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|     pWall->height     = pDisplayDim ? pDisplayDim->y : 0;
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|     pWall->xwall      = pWallDim    ? pWallDim->x    : 0;
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|     pWall->ywall      = pWallDim    ? pWallDim->y    : 0;
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| 
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|     return pWall;
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| }
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| 
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| void dmxConfigFreeWall(DMXConfigWallPtr p)
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| {
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|     if (!p) return;
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|     dmxConfigFreeToken(p->start);
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|     dmxConfigFreePair(p->wallDim);
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|     dmxConfigFreePair(p->displayDim);
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|     dmxConfigFreeString(p->nameList);
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|     dmxConfigFreeToken(p->end);
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|     dmxConfigFree(p);
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| }
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| 
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| DMXConfigOptionPtr dmxConfigCreateOption(DMXConfigTokenPtr pStart,
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|                                          DMXConfigStringPtr pOption,
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|                                          DMXConfigTokenPtr pEnd)
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| {
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|     int                length = 0;
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|     int                offset = 0;
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|     DMXConfigStringPtr p;
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|     DMXConfigOptionPtr option = dmxConfigAlloc(sizeof(*option));
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| 
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|     for (p = pOption; p; p = p->next) {
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|         if (p->string) length += strlen(p->string) + 1;
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|     }
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| 
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|     option->string = dmxConfigAlloc(length + 1);
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|     
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|     for (p = pOption; p; p = p->next) {
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|         if (p->string) {
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|             int len = strlen(p->string);
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|             strncpy(option->string + offset, p->string, len);
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|             offset += len;
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|             if (p->next) option->string[offset++] = ' ';
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|         }
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|     }
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|     option->string[offset] = '\0';
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| 
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|     option->start  = pStart;
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|     option->option = pOption;
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|     option->end    = pEnd;
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| 
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|     return option;
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| }
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| 
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| void dmxConfigFreeOption(DMXConfigOptionPtr p)
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| {
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|     if (!p) return;
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|     if (p->string) free(p->string);
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|     dmxConfigFreeToken(p->start);
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|     dmxConfigFreeString(p->option);
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|     dmxConfigFreeToken(p->end);
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|     dmxConfigFree(p);
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| }
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| 
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| const char **dmxConfigLookupParam(DMXConfigParamPtr p, const char *key,
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|                                   int *argc)
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| {
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|     DMXConfigParamPtr pt;
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| 
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|     for (pt = p; pt; pt = pt->next) {
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|         if (pt->argv && !strcasecmp(pt->argv[0], key)) {
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|             *argc = pt->argc;
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|             return pt->argv;
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|         }
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|     }
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|     *argc  = 0;
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|     return NULL;
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| }
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| 
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| DMXConfigParamPtr dmxConfigCreateParam(DMXConfigTokenPtr pStart,
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|                                        DMXConfigTokenPtr pOpen,
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|                                        DMXConfigStringPtr pParam,
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|                                        DMXConfigTokenPtr pClose,
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|                                        DMXConfigTokenPtr pEnd)
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| {
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|     DMXConfigParamPtr  param = dmxConfigAlloc(sizeof(*param));
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|     DMXConfigStringPtr pt;
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| 
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|     param->argc = 0;
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|     param->argv = NULL;
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|     for (pt = pParam; pt; pt = pt->next) {
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|         if (pt->string) {
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|             param->argv = realloc(param->argv,
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|                                   (param->argc+2) * sizeof(*param->argv));
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|             param->argv[param->argc] = pt->string;
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|             ++param->argc;
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|         }
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|     }
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|     if (param->argv) param->argv[param->argc] = NULL;
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| 
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|     param->start = pStart;
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|     param->open  = pOpen;
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|     param->param = pParam;
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|     param->close = pClose;
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|     param->end   = pEnd;
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| 
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|     return param;
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| }
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| 
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| void dmxConfigFreeParam(DMXConfigParamPtr p)
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| {
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|     DMXConfigParamPtr next;
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| 
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|     if (!p) return;
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|     do {
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|         next = p->next;
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|         dmxConfigFreeToken(p->start);
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|         dmxConfigFreeToken(p->open);
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|         dmxConfigFreeString(p->param);
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|         dmxConfigFreeToken(p->close);
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|         dmxConfigFreeToken(p->end);
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|         dmxConfigFree(p->argv);
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|         dmxConfigFree(p);
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|     } while ((p = next));
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| }
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| 
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| DMXConfigSubPtr dmxConfigCreateSub(DMXConfigType type,
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|                                    DMXConfigCommentPtr comment,
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|                                    DMXConfigDisplayPtr display,
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|                                    DMXConfigWallPtr wall,
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|                                    DMXConfigOptionPtr option,
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|                                    DMXConfigParamPtr param)
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| {
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|     DMXConfigSubPtr pSub = dmxConfigAlloc(sizeof(*pSub));
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|     pSub->type = type;
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|     switch (type) {
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|     case dmxConfigComment: pSub->comment = comment;                     break;
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|     case dmxConfigDisplay: pSub->display = display;                     break;
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|     case dmxConfigWall:    pSub->wall    = wall;                        break;
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|     case dmxConfigOption:  pSub->option  = option;                      break;
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|     case dmxConfigParam:   pSub->param   = param;                       break;
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|     default: dmxConfigLog("Type %d not supported in subentry\n", type); break;
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|     }
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|     return pSub;
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| }
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| 
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| void dmxConfigFreeSub(DMXConfigSubPtr sub)
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| {
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|     DMXConfigSubPtr pt;
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| 
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|     for (pt = sub; pt; pt = pt->next) {
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|         switch (pt->type) {
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|         case dmxConfigComment: dmxConfigFreeComment(pt->comment); break;
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|         case dmxConfigDisplay: dmxConfigFreeDisplay(pt->display); break;
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|         case dmxConfigWall:    dmxConfigFreeWall(pt->wall);       break;
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|         case dmxConfigOption:  dmxConfigFreeOption(pt->option);   break;
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|         case dmxConfigParam:   dmxConfigFreeParam(pt->param);     break;
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|         default:
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|             dmxConfigLog("Type %d not supported in subentry\n", pt->type);
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|             break;
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|         }
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|     }
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|     dmxConfigFree(sub);
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| }
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| 
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| DMXConfigSubPtr dmxConfigSubComment(DMXConfigCommentPtr comment)
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| {
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|     return dmxConfigCreateSub(dmxConfigComment, comment, NULL, NULL, NULL,
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|                               NULL);
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| }
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| 
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| DMXConfigSubPtr dmxConfigSubDisplay(DMXConfigDisplayPtr display)
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| {
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|     return dmxConfigCreateSub(dmxConfigDisplay, NULL, display, NULL, NULL,
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|                               NULL);
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| }
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| 
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| DMXConfigSubPtr dmxConfigSubWall(DMXConfigWallPtr wall)
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| {
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|     return dmxConfigCreateSub(dmxConfigWall, NULL, NULL, wall, NULL, NULL);
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| }
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| 
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| DMXConfigSubPtr dmxConfigSubOption(DMXConfigOptionPtr option)
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| {
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|     return dmxConfigCreateSub(dmxConfigOption, NULL, NULL, NULL, option, NULL);
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| }
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| 
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| DMXConfigSubPtr dmxConfigSubParam(DMXConfigParamPtr param)
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| {
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|     return dmxConfigCreateSub(dmxConfigParam, NULL, NULL, NULL, NULL, param);
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| }
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| 
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| extern DMXConfigSubPtr dmxConfigAddSub(DMXConfigSubPtr head,
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|                                        DMXConfigSubPtr sub)
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| {
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|     DMXConfigSubPtr pt;
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|     
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|     if (!head) return sub;
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|     for (pt = head; pt->next; pt = pt->next);
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|     pt->next = sub;
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|     return head;
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| }
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| 
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| DMXConfigVirtualPtr dmxConfigCreateVirtual(DMXConfigTokenPtr pStart,
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|                                            DMXConfigStringPtr pName,
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|                                            DMXConfigPairPtr pDim,
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|                                            DMXConfigTokenPtr pOpen,
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|                                            DMXConfigSubPtr pSubentry,
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|                                            DMXConfigTokenPtr pClose)
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| {
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|     DMXConfigVirtualPtr pVirtual = dmxConfigAlloc(sizeof(*pVirtual));
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| 
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|     pVirtual->start    = pStart;
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|     pVirtual->vname    = pName;
 | |
|     pVirtual->dim      = pDim;
 | |
|     pVirtual->open     = pOpen;
 | |
|     pVirtual->subentry = pSubentry;
 | |
|     pVirtual->close    = pClose;
 | |
| 
 | |
|     pVirtual->name     = pName ? pName->string : NULL;
 | |
|     pVirtual->width    = pDim ? pDim->x : 0;
 | |
|     pVirtual->height   = pDim ? pDim->y : 0;
 | |
|     
 | |
|     return pVirtual;
 | |
| }
 | |
| 
 | |
| void dmxConfigFreeVirtual(DMXConfigVirtualPtr virtual)
 | |
| {
 | |
|     dmxConfigFreeToken(virtual->start);
 | |
|     dmxConfigFreeString(virtual->vname);
 | |
|     dmxConfigFreePair(virtual->dim);
 | |
|     dmxConfigFreeToken(virtual->open);
 | |
|     dmxConfigFreeSub(virtual->subentry);
 | |
|     dmxConfigFreeToken(virtual->close);
 | |
|     dmxConfigFree(virtual);
 | |
| }
 | |
| 
 | |
| DMXConfigEntryPtr dmxConfigCreateEntry(DMXConfigType type,
 | |
|                                        DMXConfigCommentPtr comment,
 | |
|                                        DMXConfigVirtualPtr virtual)
 | |
| {
 | |
|     DMXConfigEntryPtr pEntry = dmxConfigAlloc(sizeof(*pEntry));
 | |
|     pEntry->type = type;
 | |
|     switch (type) {
 | |
|     case dmxConfigComment: pEntry->comment = comment;                break;
 | |
|     case dmxConfigVirtual: pEntry->virtual = virtual;                break;
 | |
|     default: dmxConfigLog("Type %d not supported in entry\n", type); break;
 | |
|     }
 | |
|     return pEntry;
 | |
| }
 | |
| 
 | |
| void dmxConfigFreeEntry(DMXConfigEntryPtr entry)
 | |
| {
 | |
|     DMXConfigEntryPtr pt;
 | |
| 
 | |
|     for (pt = entry; pt; pt = pt->next) {
 | |
|         switch (pt->type) {
 | |
|         case dmxConfigComment: dmxConfigFreeComment(pt->comment); break;
 | |
|         case dmxConfigVirtual: dmxConfigFreeVirtual(pt->virtual); break;
 | |
|         default:
 | |
|             dmxConfigLog("Type %d not supported in entry\n", pt->type);
 | |
|             break;
 | |
|         }
 | |
|     }
 | |
|     dmxConfigFree(entry);
 | |
| }
 | |
| 
 | |
| DMXConfigEntryPtr dmxConfigAddEntry(DMXConfigEntryPtr head,
 | |
|                                     DMXConfigType type,
 | |
|                                     DMXConfigCommentPtr comment,
 | |
|                                     DMXConfigVirtualPtr virtual)
 | |
| {
 | |
|     DMXConfigEntryPtr child = dmxConfigCreateEntry(type, comment, virtual);
 | |
|     DMXConfigEntryPtr pt;
 | |
| 
 | |
|     if (!head) return child;
 | |
| 
 | |
|     for (pt = head; pt->next; pt = pt->next);
 | |
|     pt->next = child;
 | |
| 
 | |
|     return head;
 | |
| }
 | |
| 
 | |
| DMXConfigEntryPtr dmxConfigEntryComment(DMXConfigCommentPtr comment)
 | |
| {
 | |
|     return dmxConfigCreateEntry(dmxConfigComment, comment, NULL);
 | |
| }
 | |
| 
 | |
| DMXConfigEntryPtr dmxConfigEntryVirtual(DMXConfigVirtualPtr virtual)
 | |
| {
 | |
|     return dmxConfigCreateEntry(dmxConfigVirtual, NULL, virtual);
 | |
| }
 |