1142 lines
30 KiB
C
1142 lines
30 KiB
C
/*
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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
|
|
* 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 <ctype.h>
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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 <sys/types.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include <X11/Xdefs.h>
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#include <X11/Xfuncproto.h>
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#include <limits.h>
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#include "xf86Parser_priv.h"
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#if !defined(MAXHOSTNAMELEN)
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#define MAXHOSTNAMELEN 32
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#endif /* !MAXHOSTNAMELEN */
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/* For PATH_MAX */
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#include "misc.h"
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#include "Configint.h"
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#include "xf86tokens.h"
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#define CONFIG_BUF_LEN 1024
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#define CONFIG_MAX_FILES 64
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static struct {
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FILE *file;
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char *path;
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} configFiles[CONFIG_MAX_FILES];
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static const char **builtinConfig = NULL;
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static int builtinIndex = 0;
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static int configPos = 0; /* current readers position */
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static int configLineNo = 0; /* linenumber */
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static char *configBuf, *configRBuf; /* buffer for lines */
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static char *configSection = NULL; /* name of current section being parsed */
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static int numFiles = 0; /* number of config files */
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static int curFileIndex = 0; /* index of current config file */
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static int pushToken = LOCK_TOKEN;
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static int eol_seen = 0; /* private state to handle comments */
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LexRec xf86_lex_val;
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/*
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* xf86getNextLine --
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*
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* read from the configFiles FILE stream until we encounter a new
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* line; this is effectively just a big wrapper for fgets(3).
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*
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* xf86getToken() assumes that we will read up to the next
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* newline; we need to grow configBuf and configRBuf as needed to
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* support that.
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*/
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static char *
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xf86getNextLine(void)
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{
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static int configBufLen = CONFIG_BUF_LEN;
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char *tmpConfigBuf, *tmpConfigRBuf;
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int c, i, pos = 0, eolFound = 0;
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char *ret = NULL;
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/*
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* reallocate the string if it was grown last time (i.e., is no
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* longer CONFIG_BUF_LEN); we malloc the new strings first, so
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* that if either of the mallocs fail, we can fall back on the
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* existing buffer allocations
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*/
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if (configBufLen != CONFIG_BUF_LEN) {
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tmpConfigBuf = malloc(CONFIG_BUF_LEN);
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tmpConfigRBuf = malloc(CONFIG_BUF_LEN);
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if (!tmpConfigBuf || !tmpConfigRBuf) {
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/*
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* at least one of the mallocs failed; keep the old buffers
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* and free any partial allocations
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*/
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free(tmpConfigBuf);
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free(tmpConfigRBuf);
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}
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else {
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/*
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* malloc succeeded; free the old buffers and use the new
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* buffers
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*/
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configBufLen = CONFIG_BUF_LEN;
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free(configBuf);
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free(configRBuf);
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configBuf = tmpConfigBuf;
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configRBuf = tmpConfigRBuf;
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}
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}
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/* read in another block of chars */
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do {
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ret = fgets(configBuf + pos, configBufLen - pos - 1,
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configFiles[curFileIndex].file);
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if (!ret) {
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/*
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* if the file doesn't end in a newline, add one
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* and trigger another read
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*/
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if (pos != 0) {
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strcpy(&configBuf[pos], "\n");
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ret = configBuf;
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}
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else
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break;
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}
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/* search for EOL in the new block of chars */
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for (i = pos; i < (configBufLen - 1); i++) {
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c = configBuf[i];
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if (c == '\0')
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break;
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if ((c == '\n') || (c == '\r')) {
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eolFound = 1;
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break;
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}
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}
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/*
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* if we didn't find EOL, then grow the string and
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* read in more
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*/
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if (!eolFound) {
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tmpConfigBuf = realloc(configBuf, configBufLen + CONFIG_BUF_LEN);
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tmpConfigRBuf = realloc(configRBuf, configBufLen + CONFIG_BUF_LEN);
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if (!tmpConfigBuf || !tmpConfigRBuf) {
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/*
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* at least one of the reallocations failed; use the
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* new allocation that succeeded, but we have to
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* fallback to the previous configBufLen size and use
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* the string we have, even though we don't have an
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* EOL
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*/
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if (tmpConfigBuf)
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configBuf = tmpConfigBuf;
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if (tmpConfigRBuf)
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configRBuf = tmpConfigRBuf;
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break;
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}
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else {
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/* reallocation succeeded */
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configBuf = tmpConfigBuf;
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configRBuf = tmpConfigRBuf;
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pos = i;
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configBufLen += CONFIG_BUF_LEN;
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}
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}
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} while (!eolFound);
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return ret;
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}
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static int
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StringToToken(const char *str, const xf86ConfigSymTabRec * tab)
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{
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int i;
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for (i = 0; tab[i].token != -1; i++) {
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if (!xf86nameCompare(tab[i].name, str))
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return tab[i].token;
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}
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return ERROR_TOKEN;
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}
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/*
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* xf86getToken --
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* Read next Token from the config file. Handle the global variable
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* pushToken.
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*/
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int
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xf86getToken(const xf86ConfigSymTabRec * tab)
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{
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int c, i;
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/*
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* First check whether pushToken has a different value than LOCK_TOKEN.
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* In this case rBuf[] contains a valid STRING/TOKEN/NUMBER. But in the
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* oth * case the next token must be read from the input.
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*/
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if (pushToken == EOF_TOKEN)
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return EOF_TOKEN;
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else if (pushToken == LOCK_TOKEN) {
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/*
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* eol_seen is only set for the first token after a newline.
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*/
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eol_seen = 0;
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c = configBuf[configPos];
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/*
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* Get start of next Token. EOF is handled,
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* whitespaces are skipped.
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*/
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again:
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if (!c) {
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char *ret;
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if (numFiles > 0)
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ret = xf86getNextLine();
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else {
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if (builtinConfig[builtinIndex] == NULL)
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ret = NULL;
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else {
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strlcpy(configBuf,
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builtinConfig[builtinIndex], CONFIG_BUF_LEN);
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ret = configBuf;
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builtinIndex++;
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}
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}
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if (ret == NULL) {
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/*
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* if necessary, move to the next file and
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* read the first line
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*/
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if (curFileIndex + 1 < numFiles) {
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curFileIndex++;
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configLineNo = 0;
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goto again;
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}
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else
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return pushToken = EOF_TOKEN;
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}
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configLineNo++;
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configPos = 0;
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eol_seen = 1;
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}
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i = 0;
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for (;;) {
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c = configBuf[configPos++];
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configRBuf[i++] = c;
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switch (c) {
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case ' ':
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case '\t':
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case '\r':
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continue;
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case '\n':
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i = 0;
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continue;
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}
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break;
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}
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if (c == '\0')
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goto again;
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if (c == '#') {
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do {
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configRBuf[i++] = (c = configBuf[configPos++]);
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}
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while ((c != '\n') && (c != '\r') && (c != '\0'));
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configRBuf[i] = '\0';
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/* XXX private copy.
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* Use xf86addComment when setting a comment.
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*/
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xf86_lex_val.str = strdup(configRBuf);
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return COMMENT;
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}
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/* GJA -- handle '-' and ',' * Be careful: "-hsync" is a keyword. */
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else if ((c == ',') && !isalpha((unsigned char)configBuf[configPos])) {
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return COMMA;
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}
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else if ((c == '-') && !isalpha((unsigned char)configBuf[configPos])) {
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return DASH;
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}
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/*
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* Numbers are returned immediately ...
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*/
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if (isdigit(c)) {
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int base;
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if (c == '0')
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if ((configBuf[configPos] == 'x') ||
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(configBuf[configPos] == 'X')) {
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base = 16;
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xf86_lex_val.numType = PARSE_HEX;
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}
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else {
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base = 8;
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xf86_lex_val.numType = PARSE_OCTAL;
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}
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else {
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base = 10;
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xf86_lex_val.numType = PARSE_DECIMAL;
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}
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configRBuf[0] = c;
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i = 1;
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while (isdigit(c = configBuf[configPos++]) ||
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(c == '.') || (c == 'x') || (c == 'X') ||
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((base == 16) && (((c >= 'a') && (c <= 'f')) ||
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((c >= 'A') && (c <= 'F')))))
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configRBuf[i++] = c;
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configPos--; /* GJA -- one too far */
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configRBuf[i] = '\0';
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xf86_lex_val.num = strtoul(configRBuf, NULL, 0);
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xf86_lex_val.realnum = atof(configRBuf);
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return NUMBER;
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}
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/*
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* All Strings START with a \" ...
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*/
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else if (c == '\"') {
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i = -1;
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do {
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configRBuf[++i] = (c = configBuf[configPos++]);
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}
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while ((c != '\"') && (c != '\n') && (c != '\r') && (c != '\0'));
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configRBuf[i] = '\0';
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xf86_lex_val.str = malloc(strlen(configRBuf) + 1);
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strcpy(xf86_lex_val.str, configRBuf); /* private copy ! */
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return XF86_TOKEN_STRING;
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}
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|
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/*
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* ... and now we MUST have a valid token. The search is
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* handled later along with the pushed tokens.
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*/
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else {
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configRBuf[0] = c;
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i = 0;
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do {
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configRBuf[++i] = (c = configBuf[configPos++]);
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}
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while ((c != ' ') && (c != '\t') && (c != '\n') && (c != '\r') &&
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(c != '\0') && (c != '#'));
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--configPos;
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configRBuf[i] = '\0';
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i = 0;
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}
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}
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else {
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/*
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* Here we deal with pushed tokens. Reinitialize pushToken again. If
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* the pushed token was NUMBER || STRING return them again ...
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*/
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int temp = pushToken;
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pushToken = LOCK_TOKEN;
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|
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if (temp == COMMA || temp == DASH)
|
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return temp;
|
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if (temp == NUMBER || temp == XF86_TOKEN_STRING)
|
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return temp;
|
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}
|
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|
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/*
|
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* Joop, at last we have to lookup the token ...
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*/
|
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if (tab)
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return StringToToken(configRBuf, tab);
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|
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return ERROR_TOKEN; /* Error catcher */
|
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}
|
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|
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int
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xf86getSubToken(char **comment)
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{
|
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int token;
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for (;;) {
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token = xf86getToken(NULL);
|
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if (token == COMMENT) {
|
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if (comment) {
|
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*comment = xf86addComment(*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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}
|
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}
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else
|
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return token;
|
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}
|
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/*NOTREACHED*/}
|
|
|
|
int
|
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xf86getSubTokenWithTab(char **comment, const xf86ConfigSymTabRec * tab)
|
|
{
|
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int token;
|
|
|
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for (;;) {
|
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token = xf86getToken(tab);
|
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if (token == COMMENT) {
|
|
if (comment) {
|
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*comment = xf86addComment(*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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}
|
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}
|
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else
|
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return token;
|
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}
|
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/*NOTREACHED*/}
|
|
|
|
void
|
|
xf86unGetToken(int token)
|
|
{
|
|
pushToken = token;
|
|
}
|
|
|
|
char *
|
|
xf86tokenString(void)
|
|
{
|
|
return configRBuf;
|
|
}
|
|
|
|
int
|
|
xf86pathIsAbsolute(const char *path)
|
|
{
|
|
if (path && path[0] == '/')
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/* A path is "safe" if it is relative and if it contains no ".." elements. */
|
|
int
|
|
xf86pathIsSafe(const char *path)
|
|
{
|
|
if (xf86pathIsAbsolute(path))
|
|
return 0;
|
|
|
|
/* Compare with ".." */
|
|
if (!strcmp(path, ".."))
|
|
return 0;
|
|
|
|
/* Look for leading "../" */
|
|
if (!strncmp(path, "../", 3))
|
|
return 0;
|
|
|
|
/* Look for trailing "/.." */
|
|
if ((strlen(path) > 3) && !strcmp(path + strlen(path) - 3, "/.."))
|
|
return 0;
|
|
|
|
/* Look for "/../" */
|
|
if (strstr(path, "/../"))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* This function substitutes the following escape sequences:
|
|
*
|
|
* %A cmdline argument as an absolute path (must be absolute to match)
|
|
* %R cmdline argument as a relative path
|
|
* %S cmdline argument as a "safe" path (relative, and no ".." elements)
|
|
* %X default config file name ("xorg.conf")
|
|
* %H hostname
|
|
* %E config file environment ($XORGCONFIG) as an absolute path
|
|
* %F config file environment ($XORGCONFIG) as a relative path
|
|
* %G config file environment ($XORGCONFIG) as a safe path
|
|
* %P projroot
|
|
* %C sysconfdir
|
|
* %D datadir
|
|
* %% %
|
|
*/
|
|
|
|
#define XCONFIGSUFFIX ".conf"
|
|
#define XCONFENV "XORGCONFIG"
|
|
|
|
#define BAIL_OUT do { \
|
|
free(result); \
|
|
return NULL; \
|
|
} while (0)
|
|
|
|
#define CHECK_LENGTH do { \
|
|
if (l > PATH_MAX) { \
|
|
BAIL_OUT; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define APPEND_STR(s) do { \
|
|
if (strlen(s) + l > PATH_MAX) { \
|
|
BAIL_OUT; \
|
|
} else { \
|
|
strcpy(result + l, s); \
|
|
l += strlen(s); \
|
|
} \
|
|
} while (0)
|
|
|
|
static char *
|
|
DoSubstitution(const char *template, const char *cmdline, const char *projroot,
|
|
int *cmdlineUsed, int *envUsed, const char *XConfigFile)
|
|
{
|
|
char *result;
|
|
int i, l;
|
|
static const char *env = NULL;
|
|
static char *hostname = NULL;
|
|
|
|
if (!template)
|
|
return NULL;
|
|
|
|
if (cmdlineUsed)
|
|
*cmdlineUsed = 0;
|
|
if (envUsed)
|
|
*envUsed = 0;
|
|
|
|
result = malloc(PATH_MAX + 1);
|
|
l = 0;
|
|
for (i = 0; template[i]; i++) {
|
|
if (template[i] != '%') {
|
|
result[l++] = template[i];
|
|
CHECK_LENGTH;
|
|
}
|
|
else {
|
|
switch (template[++i]) {
|
|
case 'A':
|
|
if (cmdline && xf86pathIsAbsolute(cmdline)) {
|
|
APPEND_STR(cmdline);
|
|
if (cmdlineUsed)
|
|
*cmdlineUsed = 1;
|
|
}
|
|
else
|
|
BAIL_OUT;
|
|
break;
|
|
case 'R':
|
|
if (cmdline && !xf86pathIsAbsolute(cmdline)) {
|
|
APPEND_STR(cmdline);
|
|
if (cmdlineUsed)
|
|
*cmdlineUsed = 1;
|
|
}
|
|
else
|
|
BAIL_OUT;
|
|
break;
|
|
case 'S':
|
|
if (cmdline && xf86pathIsSafe(cmdline)) {
|
|
APPEND_STR(cmdline);
|
|
if (cmdlineUsed)
|
|
*cmdlineUsed = 1;
|
|
}
|
|
else
|
|
BAIL_OUT;
|
|
break;
|
|
case 'X':
|
|
APPEND_STR(XConfigFile);
|
|
break;
|
|
case 'H':
|
|
if (!hostname) {
|
|
if ((hostname = malloc(MAXHOSTNAMELEN + 1))) {
|
|
if (gethostname(hostname, MAXHOSTNAMELEN) == 0) {
|
|
hostname[MAXHOSTNAMELEN] = '\0';
|
|
}
|
|
else {
|
|
free(hostname);
|
|
hostname = NULL;
|
|
}
|
|
}
|
|
}
|
|
if (hostname)
|
|
APPEND_STR(hostname);
|
|
break;
|
|
case 'E':
|
|
if (!env)
|
|
env = getenv(XCONFENV);
|
|
if (env && xf86pathIsAbsolute(env)) {
|
|
APPEND_STR(env);
|
|
if (envUsed)
|
|
*envUsed = 1;
|
|
}
|
|
else
|
|
BAIL_OUT;
|
|
break;
|
|
case 'F':
|
|
if (!env)
|
|
env = getenv(XCONFENV);
|
|
if (env && !xf86pathIsAbsolute(env)) {
|
|
APPEND_STR(env);
|
|
if (envUsed)
|
|
*envUsed = 1;
|
|
}
|
|
else
|
|
BAIL_OUT;
|
|
break;
|
|
case 'G':
|
|
if (!env)
|
|
env = getenv(XCONFENV);
|
|
if (env && xf86pathIsSafe(env)) {
|
|
APPEND_STR(env);
|
|
if (envUsed)
|
|
*envUsed = 1;
|
|
}
|
|
else
|
|
BAIL_OUT;
|
|
break;
|
|
case 'P':
|
|
if (projroot && xf86pathIsAbsolute(projroot))
|
|
APPEND_STR(projroot);
|
|
else
|
|
BAIL_OUT;
|
|
break;
|
|
case 'C':
|
|
APPEND_STR(SYSCONFDIR);
|
|
break;
|
|
case 'D':
|
|
APPEND_STR(DATADIR);
|
|
break;
|
|
case '%':
|
|
result[l++] = '%';
|
|
CHECK_LENGTH;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "invalid escape %%%c found in path template\n",
|
|
template[i]);
|
|
BAIL_OUT;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "Converted `%s' to `%s'\n", template, result);
|
|
#endif
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Given some searching parameters, locate and open the xorg config file.
|
|
*/
|
|
static char *
|
|
OpenConfigFile(const char *path, const char *cmdline, const char *projroot,
|
|
const char *confname)
|
|
{
|
|
char *filepath = NULL;
|
|
char *pathcopy;
|
|
const char *template;
|
|
int cmdlineUsed = 0;
|
|
FILE *file = NULL;
|
|
|
|
pathcopy = strdup(path);
|
|
for (template = strtok(pathcopy, ","); template && !file;
|
|
template = strtok(NULL, ",")) {
|
|
filepath = DoSubstitution(template, cmdline, projroot,
|
|
&cmdlineUsed, NULL, confname);
|
|
if (!filepath)
|
|
continue;
|
|
if (cmdline && !cmdlineUsed) {
|
|
free(filepath);
|
|
filepath = NULL;
|
|
continue;
|
|
}
|
|
file = fopen(filepath, "r");
|
|
if (!file) {
|
|
free(filepath);
|
|
filepath = NULL;
|
|
}
|
|
}
|
|
|
|
free(pathcopy);
|
|
if (file) {
|
|
configFiles[numFiles].file = file;
|
|
configFiles[numFiles].path = strdup(filepath);
|
|
numFiles++;
|
|
}
|
|
return filepath;
|
|
}
|
|
|
|
/*
|
|
* Match non-hidden files in the xorg config directory with a .conf
|
|
* suffix. This filter is passed to scandir(3).
|
|
*/
|
|
static int
|
|
ConfigFilter(const struct dirent *de)
|
|
{
|
|
const char *name = de->d_name;
|
|
size_t len;
|
|
size_t suflen = strlen(XCONFIGSUFFIX);
|
|
|
|
if (!name || name[0] == '.')
|
|
return 0;
|
|
len = strlen(name);
|
|
if (len <= suflen)
|
|
return 0;
|
|
if (strcmp(&name[len - suflen], XCONFIGSUFFIX) != 0)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static Bool
|
|
AddConfigDirFiles(const char *dirpath, struct dirent **list, int num)
|
|
{
|
|
int i;
|
|
Bool openedFile = FALSE;
|
|
Bool warnOnce = FALSE;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
char *path;
|
|
FILE *file;
|
|
|
|
if (numFiles >= CONFIG_MAX_FILES) {
|
|
if (!warnOnce) {
|
|
ErrorF("Maximum number of configuration " "files opened\n");
|
|
warnOnce = TRUE;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
path = malloc(PATH_MAX + 1);
|
|
snprintf(path, PATH_MAX + 1, "%s/%s", dirpath, list[i]->d_name);
|
|
file = fopen(path, "r");
|
|
if (!file) {
|
|
free(path);
|
|
continue;
|
|
}
|
|
openedFile = TRUE;
|
|
|
|
configFiles[numFiles].file = file;
|
|
configFiles[numFiles].path = path;
|
|
numFiles++;
|
|
}
|
|
|
|
return openedFile;
|
|
}
|
|
|
|
/*
|
|
* Given some searching parameters, locate and open the xorg config
|
|
* directory. The directory does not need to contain config files.
|
|
*/
|
|
static char *
|
|
OpenConfigDir(const char *path, const char *cmdline, const char *projroot,
|
|
const char *confname)
|
|
{
|
|
char *dirpath = NULL, *pathcopy;
|
|
const char *template;
|
|
Bool found = FALSE;
|
|
int cmdlineUsed = 0;
|
|
|
|
pathcopy = strdup(path);
|
|
for (template = strtok(pathcopy, ","); template && !found;
|
|
template = strtok(NULL, ",")) {
|
|
struct dirent **list = NULL;
|
|
int num;
|
|
|
|
dirpath = DoSubstitution(template, cmdline, projroot,
|
|
&cmdlineUsed, NULL, confname);
|
|
if (!dirpath)
|
|
continue;
|
|
if (cmdline && !cmdlineUsed) {
|
|
free(dirpath);
|
|
dirpath = NULL;
|
|
continue;
|
|
}
|
|
|
|
/* match files named *.conf */
|
|
num = scandir(dirpath, &list, ConfigFilter, alphasort);
|
|
if (num < 0) {
|
|
list = NULL;
|
|
num = 0;
|
|
}
|
|
found = AddConfigDirFiles(dirpath, list, num);
|
|
if (!found) {
|
|
free(dirpath);
|
|
dirpath = NULL;
|
|
}
|
|
while (num--)
|
|
free(list[num]);
|
|
free(list);
|
|
}
|
|
|
|
free(pathcopy);
|
|
return dirpath;
|
|
}
|
|
|
|
/*
|
|
* xf86initConfigFiles -- Setup global variables and buffers.
|
|
*/
|
|
void
|
|
xf86initConfigFiles(void)
|
|
{
|
|
curFileIndex = 0;
|
|
configPos = 0;
|
|
configLineNo = 0;
|
|
pushToken = LOCK_TOKEN;
|
|
|
|
configBuf = malloc(CONFIG_BUF_LEN);
|
|
configRBuf = malloc(CONFIG_BUF_LEN);
|
|
configBuf[0] = '\0'; /* sanity ... */
|
|
}
|
|
|
|
/*
|
|
* xf86openConfigFile --
|
|
*
|
|
* This function take a config file search path (optional), a command-line
|
|
* specified file name (optional) and the ProjectRoot path (optional) and
|
|
* locates and opens a config file based on that information. If a
|
|
* command-line file name is specified, then this function fails if none
|
|
* of the located files.
|
|
*
|
|
* The return value is a pointer to the actual name of the file that was
|
|
* opened. When no file is found, the return value is NULL. The caller should
|
|
* free() the returned value.
|
|
*
|
|
* The escape sequences allowed in the search path are defined above.
|
|
*
|
|
*/
|
|
|
|
#ifndef DEFAULT_CONF_PATH
|
|
#define DEFAULT_CONF_PATH "/etc/X11/%S," \
|
|
"%P/etc/X11/%S," \
|
|
"/etc/X11/%G," \
|
|
"%P/etc/X11/%G," \
|
|
"/etc/X11/%X-%M," \
|
|
"/etc/X11/%X," \
|
|
"/etc/%X," \
|
|
"%P/etc/X11/%X.%H," \
|
|
"%P/etc/X11/%X-%M," \
|
|
"%P/etc/X11/%X," \
|
|
"%P/lib/X11/%X.%H," \
|
|
"%P/lib/X11/%X-%M," \
|
|
"%P/lib/X11/%X"
|
|
#endif
|
|
|
|
char *
|
|
xf86openConfigFile(const char *path, const char *cmdline, const char *projroot)
|
|
{
|
|
if (!path || !path[0])
|
|
path = DEFAULT_CONF_PATH;
|
|
if (!projroot || !projroot[0])
|
|
projroot = PROJECTROOT;
|
|
|
|
/* Search for a config file */
|
|
return OpenConfigFile(path, cmdline, projroot, XCONFIGFILE);
|
|
}
|
|
|
|
/*
|
|
* xf86openConfigDirFiles --
|
|
*
|
|
* This function take a config directory search path (optional), a
|
|
* command-line specified directory name (optional) and the ProjectRoot path
|
|
* (optional) and locates and opens a config directory based on that
|
|
* information. If a command-line name is specified, then this function
|
|
* fails if it is not found.
|
|
*
|
|
* The return value is a pointer to the actual name of the directory that was
|
|
* opened. When no directory is found, the return value is NULL. The caller
|
|
* should free() the returned value.
|
|
*
|
|
* The escape sequences allowed in the search path are defined above.
|
|
*
|
|
*/
|
|
char *
|
|
xf86openConfigDirFiles(const char *path, const char *cmdline,
|
|
const char *projroot)
|
|
{
|
|
if (!path || !path[0])
|
|
path = DEFAULT_CONF_PATH;
|
|
if (!projroot || !projroot[0])
|
|
projroot = PROJECTROOT;
|
|
|
|
/* Search for the multiconf directory */
|
|
return OpenConfigDir(path, cmdline, projroot, XCONFIGDIR);
|
|
}
|
|
|
|
void
|
|
xf86closeConfigFile(void)
|
|
{
|
|
int i;
|
|
|
|
free(configRBuf);
|
|
configRBuf = NULL;
|
|
free(configBuf);
|
|
configBuf = NULL;
|
|
|
|
if (numFiles == 0) {
|
|
builtinConfig = NULL;
|
|
builtinIndex = 0;
|
|
}
|
|
for (i = 0; i < numFiles; i++) {
|
|
fclose(configFiles[i].file);
|
|
configFiles[i].file = NULL;
|
|
free(configFiles[i].path);
|
|
configFiles[i].path = NULL;
|
|
}
|
|
numFiles = 0;
|
|
}
|
|
|
|
void
|
|
xf86setBuiltinConfig(const char *config[])
|
|
{
|
|
builtinConfig = config;
|
|
}
|
|
|
|
void
|
|
xf86parseError(const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
const char *filename = numFiles ? configFiles[curFileIndex].path
|
|
: "<builtin configuration>";
|
|
|
|
ErrorF("Parse error on line %d of section %s in file %s\n\t",
|
|
configLineNo, configSection, filename);
|
|
va_start(ap, format);
|
|
VErrorF(format, ap);
|
|
va_end(ap);
|
|
|
|
ErrorF("\n");
|
|
}
|
|
|
|
void
|
|
xf86validationError(const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
const char *filename = numFiles ? configFiles[curFileIndex].path
|
|
: "<builtin configuration>";
|
|
|
|
ErrorF("Data incomplete in file %s\n\t", filename);
|
|
va_start(ap, format);
|
|
VErrorF(format, ap);
|
|
va_end(ap);
|
|
|
|
ErrorF("\n");
|
|
}
|
|
|
|
void
|
|
xf86setSection(const char *section)
|
|
{
|
|
free(configSection);
|
|
configSection = strdup(section);
|
|
}
|
|
|
|
/*
|
|
* xf86getToken --
|
|
* Lookup a string if it is actually a token in disguise.
|
|
*/
|
|
int
|
|
xf86getStringToken(const xf86ConfigSymTabRec * tab)
|
|
{
|
|
return StringToToken(xf86_lex_val.str, tab);
|
|
}
|
|
|
|
/*
|
|
* Compare two names. The characters '_', ' ', and '\t' are ignored
|
|
* in the comparison.
|
|
*/
|
|
int
|
|
xf86nameCompare(const char *s1, const char *s2)
|
|
{
|
|
char c1, c2;
|
|
|
|
if (!s1 || *s1 == 0) {
|
|
if (!s2 || *s2 == 0)
|
|
return 0;
|
|
else
|
|
return 1;
|
|
} else if (!s2 || *s2 == 0) {
|
|
return -1;
|
|
}
|
|
|
|
while (*s1 == '_' || *s1 == ' ' || *s1 == '\t')
|
|
s1++;
|
|
while (*s2 == '_' || *s2 == ' ' || *s2 == '\t')
|
|
s2++;
|
|
c1 = (isupper((unsigned char)*s1) ? tolower((unsigned char)*s1) : *s1);
|
|
c2 = (isupper((unsigned char)*s2) ? tolower((unsigned char)*s2) : *s2);
|
|
while (c1 == c2) {
|
|
if (c1 == '\0')
|
|
return 0;
|
|
s1++;
|
|
s2++;
|
|
while (*s1 == '_' || *s1 == ' ' || *s1 == '\t')
|
|
s1++;
|
|
while (*s2 == '_' || *s2 == ' ' || *s2 == '\t')
|
|
s2++;
|
|
c1 = (isupper((unsigned char)*s1) ? tolower((unsigned char)*s1) : *s1);
|
|
c2 = (isupper((unsigned char)*s2) ? tolower((unsigned char)*s2) : *s2);
|
|
}
|
|
return c1 - c2;
|
|
}
|
|
|
|
char *
|
|
xf86addComment(char *cur, const char *add)
|
|
{
|
|
char *str;
|
|
const char *cstr;
|
|
int len, curlen, iscomment, hasnewline = 0, insnewline, endnewline;
|
|
|
|
if (add == NULL || add[0] == '\0')
|
|
return cur;
|
|
|
|
if (cur) {
|
|
curlen = strlen(cur);
|
|
if (curlen)
|
|
hasnewline = cur[curlen - 1] == '\n';
|
|
eol_seen = 0;
|
|
}
|
|
else
|
|
curlen = 0;
|
|
|
|
cstr = add;
|
|
iscomment = 0;
|
|
while (*cstr) {
|
|
if (*cstr != ' ' && *cstr != '\t')
|
|
break;
|
|
++cstr;
|
|
}
|
|
iscomment = (*cstr == '#');
|
|
|
|
len = strlen(add);
|
|
endnewline = add[len - 1] == '\n';
|
|
|
|
insnewline = eol_seen || (curlen && !hasnewline);
|
|
if (insnewline)
|
|
len++;
|
|
if (!iscomment)
|
|
len++;
|
|
if (!endnewline)
|
|
len++;
|
|
|
|
/* Allocate + 1 char for '\0' terminator. */
|
|
str = realloc(cur, curlen + len + 1);
|
|
if (!str)
|
|
return cur;
|
|
|
|
cur = str;
|
|
|
|
if (insnewline)
|
|
cur[curlen++] = '\n';
|
|
if (!iscomment)
|
|
cur[curlen++] = '#';
|
|
strcpy(cur + curlen, add);
|
|
if (!endnewline)
|
|
strcat(cur, "\n");
|
|
|
|
return cur;
|
|
}
|
|
|
|
Bool
|
|
xf86getBoolValue(Bool *val, const char *str)
|
|
{
|
|
if (!val || !str)
|
|
return FALSE;
|
|
if (*str == '\0') {
|
|
*val = TRUE;
|
|
}
|
|
else {
|
|
if (xf86nameCompare(str, "1") == 0)
|
|
*val = TRUE;
|
|
else if (xf86nameCompare(str, "on") == 0)
|
|
*val = TRUE;
|
|
else if (xf86nameCompare(str, "true") == 0)
|
|
*val = TRUE;
|
|
else if (xf86nameCompare(str, "yes") == 0)
|
|
*val = TRUE;
|
|
else if (xf86nameCompare(str, "0") == 0)
|
|
*val = FALSE;
|
|
else if (xf86nameCompare(str, "off") == 0)
|
|
*val = FALSE;
|
|
else if (xf86nameCompare(str, "false") == 0)
|
|
*val = FALSE;
|
|
else if (xf86nameCompare(str, "no") == 0)
|
|
*val = FALSE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|