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xserver-multidpi/hw/xfree86/parser/scan.c
Dan Nicholson efa5269f23 xfree86: Use xorg.conf.d directory for multiple config files 
Currently there is a single file, xorg.conf, for configuring the server.
This works fine most of the time, but it becomes a problem when packages
or system services need to adjust the configuration. Instead, allow
multiple configuration files to live in a directory. Typically this will
be /etc/X11/xorg.conf.d.

Files with a suffix of .conf will be read and added to the server
configuration after xorg.conf. The server won't fall back to using the
auto configuration unless there is no config file and there are no files
in the config directory.

Right now this uses a simpler search template than the config file
search path by not using the command line or environment variable
parameters. The matching code was refactored a bit to make this more
coherent. Any DDX wanting to read the config files will need to call
xf86initConfigFiles before opening/reading them. This is to allow
xf86openConfigFile without xf86openConfigDirFiles and vice-versa.

Signed-off-by: Dan Nicholson <dbn.lists@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer at who-t.net>
2009-12-22 23:20:45 -08:00

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/*
* 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) {
/* stop if there are no more files */
if (++curFileIndex >= numFiles) {
curFileIndex = 0;
break;
}
configLineNo = 0;
continue;
}
/* 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)
{
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
* %M major 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 XCONFENV
#define XCONFENV "XORGCONFIG"
#endif
#define XFREE86CFGFILE "XF86Config"
#ifndef XF86_VERSION_MAJOR
#ifdef XVERSION
#if XVERSION > 40000000
#define XF86_VERSION_MAJOR (XVERSION / 10000000)
#else
#define XF86_VERSION_MAJOR (XVERSION / 1000)
#endif
#else
#define XF86_VERSION_MAJOR 4
#endif
#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 'M':
if (!majorvers[0]) {
if (XF86_VERSION_MAJOR < 0 || XF86_VERSION_MAJOR > 99) {
fprintf(stderr, "XF86_VERSION_MAJOR is out of range\n");
BAIL_OUT;
} else
sprintf(majorvers, "%d", XF86_VERSION_MAJOR);
}
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;
}
}
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 = strlen(name);
size_t suflen = strlen(XCONFIGSUFFIX);
if (!name || name[0] == '.' || 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 *projroot, const char *confname)
{
char *dirpath, *pathcopy;
const char *template;
Bool found = FALSE;
pathcopy = strdup(path);
for (template = strtok(pathcopy, ","); template && !found;
template = strtok(NULL, ",")) {
struct dirent **list = NULL;
int num;
if (!(dirpath = DoSubstitution(template, NULL, projroot,
NULL, NULL, confname)))
continue;
/* match files named *.conf */
num = scandir(dirpath, &list, ConfigFilter, alphasort);
found = AddConfigDirFiles(dirpath, list, num);
if (!found) {
free(dirpath);
dirpath = NULL;
if (list)
free(list);
}
}
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 or a fallback */
configPath = OpenConfigFile(path, cmdline, projroot, XCONFIGFILE);
if (!configPath)
configPath = OpenConfigFile(path, cmdline, projroot,
XFREE86CFGFILE);
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, 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)
{
if (configSection)
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);
}
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