1235 lines
27 KiB
C
1235 lines
27 KiB
C
/*
|
|
* Copyright (c) 1997 Metro Link Incorporated
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* 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:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
|
|
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
* Except as contained in this notice, the name of the Metro Link shall not be
|
|
* used in advertising or otherwise to promote the sale, use or other dealings
|
|
* in this Software without prior written authorization from Metro Link.
|
|
*
|
|
*/
|
|
/*
|
|
* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* 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:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Except as contained in this notice, the name of the copyright holder(s)
|
|
* and author(s) shall not be used in advertising or otherwise to promote
|
|
* the sale, use or other dealings in this Software without prior written
|
|
* authorization from the copyright holder(s) and author(s).
|
|
*/
|
|
|
|
|
|
/* View/edit this file with tab stops set to 4 */
|
|
|
|
#ifdef HAVE_XORG_CONFIG_H
|
|
#include <xorg-config.h>
|
|
#endif
|
|
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <dirent.h>
|
|
#include <unistd.h>
|
|
#include <stdarg.h>
|
|
#include <X11/Xdefs.h>
|
|
#include <X11/Xfuncproto.h>
|
|
|
|
#if defined(_POSIX_SOURCE)
|
|
#include <limits.h>
|
|
#else
|
|
#define _POSIX_SOURCE
|
|
#include <limits.h>
|
|
#undef _POSIX_SOURCE
|
|
#endif /* _POSIX_SOURCE */
|
|
|
|
#if !defined(PATH_MAX)
|
|
#if defined(MAXPATHLEN)
|
|
#define PATH_MAX MAXPATHLEN
|
|
#else
|
|
#define PATH_MAX 1024
|
|
#endif /* MAXPATHLEN */
|
|
#endif /* !PATH_MAX */
|
|
|
|
#if !defined(MAXHOSTNAMELEN)
|
|
#define MAXHOSTNAMELEN 32
|
|
#endif /* !MAXHOSTNAMELEN */
|
|
|
|
#include "Configint.h"
|
|
#include "xf86tokens.h"
|
|
|
|
#define CONFIG_BUF_LEN 1024
|
|
#define CONFIG_MAX_FILES 64
|
|
|
|
static int StringToToken (char *, xf86ConfigSymTabRec *);
|
|
|
|
static struct {
|
|
FILE *file;
|
|
char *path;
|
|
} configFiles[CONFIG_MAX_FILES];
|
|
static const char **builtinConfig = NULL;
|
|
static int builtinIndex = 0;
|
|
static int configPos = 0; /* current readers position */
|
|
static int configLineNo = 0; /* linenumber */
|
|
static char *configBuf, *configRBuf; /* buffer for lines */
|
|
static char *configPath; /* path to config file */
|
|
static char *configDirPath; /* path to config dir */
|
|
static char *configSection = NULL; /* name of current section being parsed */
|
|
static int numFiles = 0; /* number of config files */
|
|
static int curFileIndex = 0; /* index of current config file */
|
|
static int pushToken = LOCK_TOKEN;
|
|
static int eol_seen = 0; /* private state to handle comments */
|
|
LexRec val;
|
|
|
|
/*
|
|
* xf86strToUL --
|
|
*
|
|
* A portable, but restricted, version of strtoul(). It only understands
|
|
* hex, octal, and decimal. But it's good enough for our needs.
|
|
*/
|
|
static unsigned int
|
|
xf86strToUL (char *str)
|
|
{
|
|
int base = 10;
|
|
char *p = str;
|
|
unsigned int tot = 0;
|
|
|
|
if (*p == '0')
|
|
{
|
|
p++;
|
|
if ((*p == 'x') || (*p == 'X'))
|
|
{
|
|
p++;
|
|
base = 16;
|
|
}
|
|
else
|
|
base = 8;
|
|
}
|
|
while (*p)
|
|
{
|
|
if ((*p >= '0') && (*p <= ((base == 8) ? '7' : '9')))
|
|
{
|
|
tot = tot * base + (*p - '0');
|
|
}
|
|
else if ((base == 16) && (*p >= 'a') && (*p <= 'f'))
|
|
{
|
|
tot = tot * base + 10 + (*p - 'a');
|
|
}
|
|
else if ((base == 16) && (*p >= 'A') && (*p <= 'F'))
|
|
{
|
|
tot = tot * base + 10 + (*p - 'A');
|
|
}
|
|
else
|
|
{
|
|
return tot;
|
|
}
|
|
p++;
|
|
}
|
|
return tot;
|
|
}
|
|
|
|
/*
|
|
* xf86getNextLine --
|
|
*
|
|
* read from the configFiles FILE stream until we encounter a new
|
|
* line; this is effectively just a big wrapper for fgets(3).
|
|
*
|
|
* xf86getToken() assumes that we will read up to the next
|
|
* newline; we need to grow configBuf and configRBuf as needed to
|
|
* support that.
|
|
*/
|
|
|
|
static char*
|
|
xf86getNextLine(void)
|
|
{
|
|
static int configBufLen = CONFIG_BUF_LEN;
|
|
char *tmpConfigBuf, *tmpConfigRBuf;
|
|
int c, i, pos = 0, eolFound = 0;
|
|
char *ret = NULL;
|
|
|
|
/*
|
|
* reallocate the string if it was grown last time (i.e., is no
|
|
* longer CONFIG_BUF_LEN); we malloc the new strings first, so
|
|
* that if either of the mallocs fail, we can fall back on the
|
|
* existing buffer allocations
|
|
*/
|
|
|
|
if (configBufLen != CONFIG_BUF_LEN) {
|
|
|
|
tmpConfigBuf = malloc(CONFIG_BUF_LEN);
|
|
tmpConfigRBuf = malloc(CONFIG_BUF_LEN);
|
|
|
|
if (!tmpConfigBuf || !tmpConfigRBuf) {
|
|
|
|
/*
|
|
* at least one of the mallocs failed; keep the old buffers
|
|
* and free any partial allocations
|
|
*/
|
|
|
|
free(tmpConfigBuf);
|
|
free(tmpConfigRBuf);
|
|
|
|
} else {
|
|
|
|
/*
|
|
* malloc succeeded; free the old buffers and use the new
|
|
* buffers
|
|
*/
|
|
|
|
configBufLen = CONFIG_BUF_LEN;
|
|
|
|
free(configBuf);
|
|
free(configRBuf);
|
|
|
|
configBuf = tmpConfigBuf;
|
|
configRBuf = tmpConfigRBuf;
|
|
}
|
|
}
|
|
|
|
/* read in another block of chars */
|
|
|
|
do {
|
|
ret = fgets(configBuf + pos, configBufLen - pos - 1,
|
|
configFiles[curFileIndex].file);
|
|
|
|
if (!ret) {
|
|
/*
|
|
* if the file doesn't end in a newline, add one
|
|
* and trigger another read
|
|
*/
|
|
if (pos != 0) {
|
|
strcpy(&configBuf[pos], "\n");
|
|
ret = configBuf;
|
|
} else
|
|
break;
|
|
}
|
|
|
|
/* search for EOL in the new block of chars */
|
|
|
|
for (i = pos; i < (configBufLen - 1); i++) {
|
|
c = configBuf[i];
|
|
|
|
if (c == '\0') break;
|
|
|
|
if ((c == '\n') || (c == '\r')) {
|
|
eolFound = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* if we didn't find EOL, then grow the string and
|
|
* read in more
|
|
*/
|
|
|
|
if (!eolFound) {
|
|
|
|
tmpConfigBuf = realloc(configBuf, configBufLen + CONFIG_BUF_LEN);
|
|
tmpConfigRBuf = realloc(configRBuf, configBufLen + CONFIG_BUF_LEN);
|
|
|
|
if (!tmpConfigBuf || !tmpConfigRBuf) {
|
|
|
|
/*
|
|
* at least one of the reallocations failed; use the
|
|
* new allocation that succeeded, but we have to
|
|
* fallback to the previous configBufLen size and use
|
|
* the string we have, even though we don't have an
|
|
* EOL
|
|
*/
|
|
|
|
if (tmpConfigBuf) configBuf = tmpConfigBuf;
|
|
if (tmpConfigRBuf) configRBuf = tmpConfigRBuf;
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
/* reallocation succeeded */
|
|
|
|
configBuf = tmpConfigBuf;
|
|
configRBuf = tmpConfigRBuf;
|
|
pos = i;
|
|
configBufLen += CONFIG_BUF_LEN;
|
|
}
|
|
}
|
|
|
|
} while (!eolFound);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* xf86getToken --
|
|
* Read next Token from the config file. Handle the global variable
|
|
* pushToken.
|
|
*/
|
|
int
|
|
xf86getToken (xf86ConfigSymTabRec * tab)
|
|
{
|
|
int c, i;
|
|
|
|
/*
|
|
* First check whether pushToken has a different value than LOCK_TOKEN.
|
|
* In this case rBuf[] contains a valid STRING/TOKEN/NUMBER. But in the
|
|
* oth * case the next token must be read from the input.
|
|
*/
|
|
if (pushToken == EOF_TOKEN)
|
|
return EOF_TOKEN;
|
|
else if (pushToken == LOCK_TOKEN)
|
|
{
|
|
/*
|
|
* eol_seen is only set for the first token after a newline.
|
|
*/
|
|
eol_seen = 0;
|
|
|
|
c = configBuf[configPos];
|
|
|
|
/*
|
|
* Get start of next Token. EOF is handled,
|
|
* whitespaces are skipped.
|
|
*/
|
|
|
|
again:
|
|
if (!c)
|
|
{
|
|
char *ret;
|
|
if (numFiles > 0)
|
|
ret = xf86getNextLine();
|
|
else {
|
|
if (builtinConfig[builtinIndex] == NULL)
|
|
ret = NULL;
|
|
else {
|
|
ret = strncpy(configBuf, builtinConfig[builtinIndex],
|
|
CONFIG_BUF_LEN);
|
|
builtinIndex++;
|
|
}
|
|
}
|
|
if (ret == NULL)
|
|
{
|
|
/*
|
|
* if necessary, move to the next file and
|
|
* read the first line
|
|
*/
|
|
if (curFileIndex + 1 < numFiles) {
|
|
curFileIndex++;
|
|
configLineNo = 0;
|
|
goto again;
|
|
}
|
|
else
|
|
return pushToken = EOF_TOKEN;
|
|
}
|
|
configLineNo++;
|
|
configPos = 0;
|
|
eol_seen = 1;
|
|
}
|
|
|
|
i = 0;
|
|
for (;;) {
|
|
c = configBuf[configPos++];
|
|
configRBuf[i++] = c;
|
|
switch (c) {
|
|
case ' ':
|
|
case '\t':
|
|
case '\r':
|
|
continue;
|
|
case '\n':
|
|
i = 0;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (c == '\0')
|
|
goto again;
|
|
|
|
if (c == '#')
|
|
{
|
|
do
|
|
{
|
|
configRBuf[i++] = (c = configBuf[configPos++]);
|
|
}
|
|
while ((c != '\n') && (c != '\r') && (c != '\0'));
|
|
configRBuf[i] = '\0';
|
|
/* XXX no private copy.
|
|
* Use xf86addComment when setting a comment.
|
|
*/
|
|
val.str = configRBuf;
|
|
return COMMENT;
|
|
}
|
|
|
|
/* GJA -- handle '-' and ',' * Be careful: "-hsync" is a keyword. */
|
|
else if ((c == ',') && !isalpha (configBuf[configPos]))
|
|
{
|
|
return COMMA;
|
|
}
|
|
else if ((c == '-') && !isalpha (configBuf[configPos]))
|
|
{
|
|
return DASH;
|
|
}
|
|
|
|
/*
|
|
* Numbers are returned immediately ...
|
|
*/
|
|
if (isdigit (c))
|
|
{
|
|
int base;
|
|
|
|
if (c == '0')
|
|
if ((configBuf[configPos] == 'x') ||
|
|
(configBuf[configPos] == 'X'))
|
|
{
|
|
base = 16;
|
|
val.numType = PARSE_HEX;
|
|
}
|
|
else
|
|
{
|
|
base = 8;
|
|
val.numType = PARSE_OCTAL;
|
|
}
|
|
else
|
|
{
|
|
base = 10;
|
|
val.numType = PARSE_DECIMAL;
|
|
}
|
|
|
|
configRBuf[0] = c;
|
|
i = 1;
|
|
while (isdigit (c = configBuf[configPos++]) ||
|
|
(c == '.') || (c == 'x') || (c == 'X') ||
|
|
((base == 16) && (((c >= 'a') && (c <= 'f')) ||
|
|
((c >= 'A') && (c <= 'F')))))
|
|
configRBuf[i++] = c;
|
|
configPos--; /* GJA -- one too far */
|
|
configRBuf[i] = '\0';
|
|
val.num = xf86strToUL (configRBuf);
|
|
val.realnum = atof (configRBuf);
|
|
return NUMBER;
|
|
}
|
|
|
|
/*
|
|
* All Strings START with a \" ...
|
|
*/
|
|
else if (c == '\"')
|
|
{
|
|
i = -1;
|
|
do
|
|
{
|
|
configRBuf[++i] = (c = configBuf[configPos++]);
|
|
}
|
|
while ((c != '\"') && (c != '\n') && (c != '\r') && (c != '\0'));
|
|
configRBuf[i] = '\0';
|
|
val.str = malloc (strlen (configRBuf) + 1);
|
|
strcpy (val.str, configRBuf); /* private copy ! */
|
|
return STRING;
|
|
}
|
|
|
|
/*
|
|
* ... and now we MUST have a valid token. The search is
|
|
* handled later along with the pushed tokens.
|
|
*/
|
|
else
|
|
{
|
|
configRBuf[0] = c;
|
|
i = 0;
|
|
do
|
|
{
|
|
configRBuf[++i] = (c = configBuf[configPos++]);
|
|
}
|
|
while ((c != ' ') && (c != '\t') && (c != '\n') && (c != '\r') && (c != '\0') && (c != '#'));
|
|
--configPos;
|
|
configRBuf[i] = '\0';
|
|
i = 0;
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
|
|
/*
|
|
* Here we deal with pushed tokens. Reinitialize pushToken again. If
|
|
* the pushed token was NUMBER || STRING return them again ...
|
|
*/
|
|
int temp = pushToken;
|
|
pushToken = LOCK_TOKEN;
|
|
|
|
if (temp == COMMA || temp == DASH)
|
|
return temp;
|
|
if (temp == NUMBER || temp == STRING)
|
|
return temp;
|
|
}
|
|
|
|
/*
|
|
* Joop, at last we have to lookup the token ...
|
|
*/
|
|
if (tab)
|
|
{
|
|
i = 0;
|
|
while (tab[i].token != -1)
|
|
if (xf86nameCompare (configRBuf, tab[i].name) == 0)
|
|
return tab[i].token;
|
|
else
|
|
i++;
|
|
}
|
|
|
|
return ERROR_TOKEN; /* Error catcher */
|
|
}
|
|
|
|
int
|
|
xf86getSubToken (char **comment)
|
|
{
|
|
int token;
|
|
|
|
for (;;) {
|
|
token = xf86getToken(NULL);
|
|
if (token == COMMENT) {
|
|
if (comment)
|
|
*comment = xf86addComment(*comment, val.str);
|
|
}
|
|
else
|
|
return token;
|
|
}
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
int
|
|
xf86getSubTokenWithTab (char **comment, xf86ConfigSymTabRec *tab)
|
|
{
|
|
int token;
|
|
|
|
for (;;) {
|
|
token = xf86getToken(tab);
|
|
if (token == COMMENT) {
|
|
if (comment)
|
|
*comment = xf86addComment(*comment, val.str);
|
|
}
|
|
else
|
|
return token;
|
|
}
|
|
/*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
|
|
* %M config file format version number
|
|
* %% %
|
|
*/
|
|
|
|
#ifndef XCONFIGFILE
|
|
#define XCONFIGFILE "xorg.conf"
|
|
#endif
|
|
#ifndef XCONFIGDIR
|
|
#define XCONFIGDIR "xorg.conf.d"
|
|
#endif
|
|
#ifndef XCONFIGSUFFIX
|
|
#define XCONFIGSUFFIX ".conf"
|
|
#endif
|
|
#ifndef PROJECTROOT
|
|
#define PROJECTROOT "/usr/X11R6"
|
|
#endif
|
|
#ifndef SYSCONFDIR
|
|
#define SYSCONFDIR PROJECTROOT "/etc"
|
|
#endif
|
|
#ifndef DATADIR
|
|
#define DATADIR PROJECTROOT "/share"
|
|
#endif
|
|
#ifndef XCONFENV
|
|
#define XCONFENV "XORGCONFIG"
|
|
#endif
|
|
/* xorg.conf is based on XF86Config version 4. If we ever break
|
|
compatibility of the xorg.conf syntax, we'll bump this version number. */
|
|
#ifndef CONFIG_FILE_VERSION
|
|
#define CONFIG_FILE_VERSION 4
|
|
#endif
|
|
|
|
#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;
|
|
static char majorvers[3] = "";
|
|
|
|
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 'M':
|
|
if (!majorvers[0]) {
|
|
snprintf(majorvers, sizeof(majorvers),
|
|
"%d", CONFIG_FILE_VERSION);
|
|
}
|
|
APPEND_STR(majorvers);
|
|
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;
|
|
}
|
|
free(list[i]);
|
|
continue;
|
|
}
|
|
|
|
path = malloc(PATH_MAX + 1);
|
|
snprintf(path, PATH_MAX + 1, "%s/%s", dirpath,
|
|
list[i]->d_name);
|
|
free(list[i]);
|
|
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, *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);
|
|
found = AddConfigDirFiles(dirpath, list, num);
|
|
if (!found) {
|
|
free(dirpath);
|
|
dirpath = NULL;
|
|
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 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
|
|
|
|
const 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 */
|
|
configPath = OpenConfigFile(path, cmdline, projroot, XCONFIGFILE);
|
|
return configPath;
|
|
}
|
|
|
|
/*
|
|
* 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 direcoty that was
|
|
* opened. When no directory is found, the return value is NULL.
|
|
*
|
|
* The escape sequences allowed in the search path are defined above.
|
|
*
|
|
*/
|
|
const 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 */
|
|
configDirPath = OpenConfigDir(path, cmdline, projroot, XCONFIGDIR);
|
|
return configDirPath;
|
|
}
|
|
|
|
void
|
|
xf86closeConfigFile (void)
|
|
{
|
|
int i;
|
|
|
|
free (configPath);
|
|
configPath = NULL;
|
|
free (configDirPath);
|
|
configDirPath = NULL;
|
|
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 (char *format,...)
|
|
{
|
|
va_list ap;
|
|
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 (char *format,...)
|
|
{
|
|
va_list ap;
|
|
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 (char *section)
|
|
{
|
|
free(configSection);
|
|
configSection = malloc(strlen (section) + 1);
|
|
strcpy (configSection, section);
|
|
}
|
|
|
|
/*
|
|
* xf86getToken --
|
|
* Lookup a string if it is actually a token in disguise.
|
|
*/
|
|
int
|
|
xf86getStringToken (xf86ConfigSymTabRec * tab)
|
|
{
|
|
return StringToToken (val.str, tab);
|
|
}
|
|
|
|
static int
|
|
StringToToken (char *str, xf86ConfigSymTabRec * tab)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; tab[i].token != -1; i++)
|
|
{
|
|
if (!xf86nameCompare (tab[i].name, str))
|
|
return tab[i].token;
|
|
}
|
|
return ERROR_TOKEN;
|
|
}
|
|
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
while (*s1 == '_' || *s1 == ' ' || *s1 == '\t')
|
|
s1++;
|
|
while (*s2 == '_' || *s2 == ' ' || *s2 == '\t')
|
|
s2++;
|
|
c1 = (isupper (*s1) ? tolower (*s1) : *s1);
|
|
c2 = (isupper (*s2) ? tolower (*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 (*s1) ? tolower (*s1) : *s1);
|
|
c2 = (isupper (*s2) ? tolower (*s2) : *s2);
|
|
}
|
|
return c1 - c2;
|
|
}
|
|
|
|
char *
|
|
xf86addComment(char *cur, char *add)
|
|
{
|
|
char *str;
|
|
int len, curlen, iscomment, hasnewline = 0, 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;
|
|
|
|
str = add;
|
|
iscomment = 0;
|
|
while (*str) {
|
|
if (*str != ' ' && *str != '\t')
|
|
break;
|
|
++str;
|
|
}
|
|
iscomment = (*str == '#');
|
|
|
|
len = strlen(add);
|
|
endnewline = add[len - 1] == '\n';
|
|
len += 1 + iscomment + (!hasnewline) + (!endnewline) + eol_seen;
|
|
|
|
if ((str = realloc(cur, len + curlen)) == NULL)
|
|
return cur;
|
|
|
|
cur = str;
|
|
|
|
if (eol_seen || (curlen && !hasnewline))
|
|
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;
|
|
}
|