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https://github.com/X11Libre/xserver.git
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b28285332e
Adding paranoid extra checks against allocation failure and NULL pointers. Even though might not be actually hit in practise, it's still better to be cautious, just in case. And reducing analyzer noise this way. Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
278 lines
8.7 KiB
C
278 lines
8.7 KiB
C
/*
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*
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* Copyright (c) 1997 Metro Link Incorporated
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN 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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* Except as contained in this notice, the name of the Metro Link shall not be
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* used in advertising or otherwise to promote the sale, use or other dealings
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* in this Software without prior written authorization from Metro Link.
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*
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*/
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/*
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* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <assert.h>
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#include "xf86Parser.h"
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#include "xf86tokens.h"
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#include "Configint.h"
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static const xf86ConfigSymTabRec SubModuleTab[] = {
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{ENDSUBSECTION, "endsubsection"},
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{OPTION, "option"},
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{-1, ""},
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};
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static const xf86ConfigSymTabRec ModuleTab[] = {
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{ENDSECTION, "endsection"},
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{LOAD, "load"},
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{DISABLE, "disable"},
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{LOAD_DRIVER, "loaddriver"},
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{SUBSECTION, "subsection"},
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{-1, ""},
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};
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#define CLEANUP xf86freeModules
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static XF86LoadPtr
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xf86parseModuleSubSection(XF86LoadPtr head, char *name)
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{
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int token;
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parsePrologue(XF86LoadPtr, XF86LoadRec)
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ptr->load_name = name;
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ptr->load_type = XF86_LOAD_MODULE;
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ptr->ignore = 0;
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ptr->load_opt = NULL;
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ptr->list.next = NULL;
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while ((token = xf86getToken(SubModuleTab)) != ENDSUBSECTION) {
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switch (token) {
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case COMMENT:
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ptr->load_comment = xf86addComment(ptr->load_comment, xf86_lex_val.str);
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free(xf86_lex_val.str);
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xf86_lex_val.str = NULL;
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break;
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case OPTION:
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ptr->load_opt = xf86parseOption(ptr->load_opt);
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break;
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case EOF_TOKEN:
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xf86parseError(UNEXPECTED_EOF_MSG);
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free(ptr);
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return NULL;
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default:
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xf86parseError(INVALID_KEYWORD_MSG, xf86tokenString());
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free(ptr);
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return NULL;
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break;
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}
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}
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return ((XF86LoadPtr) xf86addListItem((glp) head, (glp) ptr));
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}
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XF86ConfModulePtr
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xf86parseModuleSection(void)
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{
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int token;
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parsePrologue(XF86ConfModulePtr, XF86ConfModuleRec)
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while ((token = xf86getToken(ModuleTab)) != ENDSECTION) {
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switch (token) {
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case COMMENT:
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ptr->mod_comment = xf86addComment(ptr->mod_comment, xf86_lex_val.str);
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free(xf86_lex_val.str);
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xf86_lex_val.str = NULL;
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break;
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case LOAD:
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if (xf86getSubToken(&(ptr->mod_comment)) != STRING)
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Error(QUOTE_MSG, "Load");
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ptr->mod_load_lst =
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xf86addNewLoadDirective(ptr->mod_load_lst, xf86_lex_val.str,
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XF86_LOAD_MODULE, NULL);
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break;
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case DISABLE:
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if (xf86getSubToken(&(ptr->mod_comment)) != STRING)
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Error(QUOTE_MSG, "Disable");
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ptr->mod_disable_lst =
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xf86addNewLoadDirective(ptr->mod_disable_lst, xf86_lex_val.str,
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XF86_DISABLE_MODULE, NULL);
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break;
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case LOAD_DRIVER:
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if (xf86getSubToken(&(ptr->mod_comment)) != STRING)
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Error(QUOTE_MSG, "LoadDriver");
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ptr->mod_load_lst =
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xf86addNewLoadDirective(ptr->mod_load_lst, xf86_lex_val.str,
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XF86_LOAD_DRIVER, NULL);
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break;
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case SUBSECTION:
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if (xf86getSubToken(&(ptr->mod_comment)) != STRING)
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Error(QUOTE_MSG, "SubSection");
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ptr->mod_load_lst =
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xf86parseModuleSubSection(ptr->mod_load_lst, xf86_lex_val.str);
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break;
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case EOF_TOKEN:
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Error(UNEXPECTED_EOF_MSG);
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break;
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default:
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Error(INVALID_KEYWORD_MSG, xf86tokenString());
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break;
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}
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}
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#ifdef DEBUG
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printf("Module section parsed\n");
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#endif
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return ptr;
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}
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#undef CLEANUP
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void
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xf86printModuleSection(FILE * cf, XF86ConfModulePtr ptr)
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{
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XF86LoadPtr lptr;
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if (ptr == NULL)
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return;
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if (ptr->mod_comment)
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fprintf(cf, "%s", ptr->mod_comment);
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for (lptr = ptr->mod_load_lst; lptr; lptr = lptr->list.next) {
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switch (lptr->load_type) {
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case XF86_LOAD_MODULE:
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if (lptr->load_opt == NULL) {
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fprintf(cf, "\tLoad \"%s\"", lptr->load_name);
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if (lptr->load_comment)
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fprintf(cf, "%s", lptr->load_comment);
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else
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fputc('\n', cf);
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}
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else {
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fprintf(cf, "\tSubSection \"%s\"\n", lptr->load_name);
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if (lptr->load_comment)
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fprintf(cf, "%s", lptr->load_comment);
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xf86printOptionList(cf, lptr->load_opt, 2);
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fprintf(cf, "\tEndSubSection\n");
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}
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break;
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case XF86_LOAD_DRIVER:
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fprintf(cf, "\tLoadDriver \"%s\"", lptr->load_name);
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if (lptr->load_comment)
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fprintf(cf, "%s", lptr->load_comment);
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else
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fputc('\n', cf);
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break;
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#if 0
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default:
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fprintf(cf, "#\tUnknown type \"%s\"\n", lptr->load_name);
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break;
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#endif
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}
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}
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}
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XF86LoadPtr
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xf86addNewLoadDirective(XF86LoadPtr head, const char *name, int type,
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XF86OptionPtr opts)
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{
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XF86LoadPtr new;
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int token;
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new = calloc(1, sizeof(XF86LoadRec));
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assert(new);
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new->load_name = name;
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new->load_type = type;
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new->load_opt = opts;
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new->ignore = 0;
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new->list.next = NULL;
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if ((token = xf86getToken(NULL)) == COMMENT) {
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new->load_comment = xf86addComment(new->load_comment, xf86_lex_val.str);
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free(xf86_lex_val.str);
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xf86_lex_val.str = NULL;
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} else {
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xf86unGetToken(token);
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}
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return ((XF86LoadPtr) xf86addListItem((glp) head, (glp) new));
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}
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void
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xf86freeModules(XF86ConfModulePtr ptr)
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{
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XF86LoadPtr lptr;
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XF86LoadPtr prev;
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if (ptr == NULL)
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return;
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lptr = ptr->mod_load_lst;
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while (lptr) {
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TestFree(lptr->load_name);
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TestFree(lptr->load_comment);
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prev = lptr;
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lptr = lptr->list.next;
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free(prev);
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}
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lptr = ptr->mod_disable_lst;
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while (lptr) {
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TestFree(lptr->load_name);
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TestFree(lptr->load_comment);
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prev = lptr;
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lptr = lptr->list.next;
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free(prev);
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}
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TestFree(ptr->mod_comment);
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free(ptr);
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}
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