mpd/src/conf.c

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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "conf.h"
#include "log.h"
#include "utils.h"
#include "buffer2array.h"
#include "list.h"
Merge branches/ew r7104 thread-safety work in preparation for rewrite to use pthreads Expect no regressions against trunk (r7078), possibly minor performance improvements in update (due to fewer heap allocations), but increased stack usage. Applied the following patches: * maxpath_str for reentrancy (temporary fix, reverted) * path: start working on thread-safe variants of these methods * Re-entrancy work on path/character-set conversions * directory.c: exploreDirectory() use reentrant functions here * directory/update: more use of reentrant functions + cleanups * string_toupper: a strdup-less version of strDupToUpper * get_song_url: a static-variable-free version of getSongUrl() * Use reentrant/thread-safe get_song_url everywhere * replace rmp2amp with the reentrant version, rmp2amp_r * Get rid of the non-reentrant/non-thread-safe rpp2app, too. * buffer2array: assert strdup() returns a usable value in unit tests * replace utf8ToFsCharset and fsCharsetToUtf8 with thread-safe variants * fix storing playlists w/o absolute paths * parent_path(), a reentrant version of parentPath() * parentPath => parent_path for reentrancy and thread-safety * allow "make test" to automatically run embedded unit tests * remove convStrDup() and maxpath_str() * use MPD_PATH_MAX everywhere instead of MAXPATHLEN * path: get rid of appendSlash, pfx_path and just use pfx_dir * get_song_url: fix the ability to play songs in the top-level music_directory git-svn-id: https://svn.musicpd.org/mpd/trunk@7106 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-12-28 03:56:25 +01:00
#include "path.h"
#include "os_compat.h"
Merge branches/ew r7104 thread-safety work in preparation for rewrite to use pthreads Expect no regressions against trunk (r7078), possibly minor performance improvements in update (due to fewer heap allocations), but increased stack usage. Applied the following patches: * maxpath_str for reentrancy (temporary fix, reverted) * path: start working on thread-safe variants of these methods * Re-entrancy work on path/character-set conversions * directory.c: exploreDirectory() use reentrant functions here * directory/update: more use of reentrant functions + cleanups * string_toupper: a strdup-less version of strDupToUpper * get_song_url: a static-variable-free version of getSongUrl() * Use reentrant/thread-safe get_song_url everywhere * replace rmp2amp with the reentrant version, rmp2amp_r * Get rid of the non-reentrant/non-thread-safe rpp2app, too. * buffer2array: assert strdup() returns a usable value in unit tests * replace utf8ToFsCharset and fsCharsetToUtf8 with thread-safe variants * fix storing playlists w/o absolute paths * parent_path(), a reentrant version of parentPath() * parentPath => parent_path for reentrancy and thread-safety * allow "make test" to automatically run embedded unit tests * remove convStrDup() and maxpath_str() * use MPD_PATH_MAX everywhere instead of MAXPATHLEN * path: get rid of appendSlash, pfx_path and just use pfx_dir * get_song_url: fix the ability to play songs in the top-level music_directory git-svn-id: https://svn.musicpd.org/mpd/trunk@7106 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-12-28 03:56:25 +01:00
#define MAX_STRING_SIZE MPD_PATH_MAX+80
#define CONF_COMMENT '#'
#define CONF_BLOCK_BEGIN "{"
#define CONF_BLOCK_END "}"
#define CONF_REPEATABLE_MASK 0x01
#define CONF_BLOCK_MASK 0x02
#define CONF_LINE_TOKEN_MAX 3
typedef struct _configEntry {
unsigned char mask;
List *configParamList;
} ConfigEntry;
static List *configEntriesList;
static int get_bool(const char *value)
{
const char **x;
static const char *t[] = { "yes", "true", "1", NULL };
static const char *f[] = { "no", "false", "0", NULL };
for (x = t; *x; x++) {
if (!strcasecmp(*x, value))
return 1;
}
for (x = f; *x; x++) {
if (!strcasecmp(*x, value))
return 0;
}
return CONF_BOOL_INVALID;
}
static ConfigParam *newConfigParam(char *value, int line)
{
ConfigParam *ret = xmalloc(sizeof(ConfigParam));
if (!value)
ret->value = NULL;
else
ret->value = xstrdup(value);
ret->line = line;
ret->numberOfBlockParams = 0;
ret->blockParams = NULL;
return ret;
}
static void freeConfigParam(ConfigParam * param)
{
int i;
if (param->value)
free(param->value);
for (i = 0; i < param->numberOfBlockParams; i++) {
if (param->blockParams[i].name) {
free(param->blockParams[i].name);
}
if (param->blockParams[i].value) {
free(param->blockParams[i].value);
}
}
if (param->numberOfBlockParams)
free(param->blockParams);
free(param);
}
static ConfigEntry *newConfigEntry(int repeatable, int block)
{
ConfigEntry *ret = xmalloc(sizeof(ConfigEntry));
ret->mask = 0;
ret->configParamList =
makeList((ListFreeDataFunc *) freeConfigParam, 1);
if (repeatable)
ret->mask |= CONF_REPEATABLE_MASK;
if (block)
ret->mask |= CONF_BLOCK_MASK;
return ret;
}
static void freeConfigEntry(ConfigEntry * entry)
{
freeList(entry->configParamList);
free(entry);
}
static void registerConfigParam(const char *name, int repeatable, int block)
{
ConfigEntry *entry;
if (findInList(configEntriesList, name, NULL))
FATAL("config parameter \"%s\" already registered\n", name);
entry = newConfigEntry(repeatable, block);
insertInList(configEntriesList, name, entry);
}
void finishConf(void)
{
freeList(configEntriesList);
}
void initConf(void)
{
configEntriesList = makeList((ListFreeDataFunc *) freeConfigEntry, 1);
/* registerConfigParam(name, repeatable, block); */
registerConfigParam(CONF_MUSIC_DIR, 0, 0);
registerConfigParam(CONF_PLAYLIST_DIR, 0, 0);
registerConfigParam(CONF_DB_FILE, 0, 0);
registerConfigParam(CONF_LOG_FILE, 0, 0);
registerConfigParam(CONF_ERROR_FILE, 0, 0);
registerConfigParam(CONF_PID_FILE, 0, 0);
registerConfigParam(CONF_STATE_FILE, 0, 0);
registerConfigParam(CONF_USER, 0, 0);
registerConfigParam(CONF_BIND_TO_ADDRESS, 1, 0);
registerConfigParam(CONF_PORT, 0, 0);
registerConfigParam(CONF_LOG_LEVEL, 0, 0);
registerConfigParam(CONF_ZEROCONF_NAME, 0, 0);
registerConfigParam(CONF_ZEROCONF_ENABLED, 0, 0);
registerConfigParam(CONF_PASSWORD, 1, 0);
registerConfigParam(CONF_DEFAULT_PERMS, 0, 0);
registerConfigParam(CONF_AUDIO_OUTPUT, 1, 1);
registerConfigParam(CONF_AUDIO_OUTPUT_FORMAT, 0, 0);
registerConfigParam(CONF_MIXER_TYPE, 0, 0);
registerConfigParam(CONF_MIXER_DEVICE, 0, 0);
registerConfigParam(CONF_MIXER_CONTROL, 0, 0);
registerConfigParam(CONF_REPLAYGAIN, 0, 0);
registerConfigParam(CONF_REPLAYGAIN_PREAMP, 0, 0);
registerConfigParam(CONF_VOLUME_NORMALIZATION, 0, 0);
registerConfigParam(CONF_SAMPLERATE_CONVERTER, 0, 0);
registerConfigParam(CONF_AUDIO_BUFFER_SIZE, 0, 0);
registerConfigParam(CONF_BUFFER_BEFORE_PLAY, 0, 0);
registerConfigParam(CONF_HTTP_BUFFER_SIZE, 0, 0);
registerConfigParam(CONF_HTTP_PREBUFFER_SIZE, 0, 0);
registerConfigParam(CONF_HTTP_PROXY_HOST, 0, 0);
registerConfigParam(CONF_HTTP_PROXY_PORT, 0, 0);
registerConfigParam(CONF_HTTP_PROXY_USER, 0, 0);
registerConfigParam(CONF_HTTP_PROXY_PASSWORD, 0, 0);
registerConfigParam(CONF_CONN_TIMEOUT, 0, 0);
registerConfigParam(CONF_MAX_CONN, 0, 0);
registerConfigParam(CONF_MAX_PLAYLIST_LENGTH, 0, 0);
registerConfigParam(CONF_MAX_COMMAND_LIST_SIZE, 0, 0);
registerConfigParam(CONF_MAX_OUTPUT_BUFFER_SIZE, 0, 0);
registerConfigParam(CONF_FS_CHARSET, 0, 0);
registerConfigParam(CONF_ID3V1_ENCODING, 0, 0);
registerConfigParam(CONF_METADATA_TO_USE, 0, 0);
registerConfigParam(CONF_SAVE_ABSOLUTE_PATHS, 0, 0);
registerConfigParam(CONF_GAPLESS_MP3_PLAYBACK, 0, 0);
}
static void addBlockParam(ConfigParam * param, char *name, char *value,
int line)
{
param->numberOfBlockParams++;
param->blockParams = xrealloc(param->blockParams,
param->numberOfBlockParams *
sizeof(BlockParam));
param->blockParams[param->numberOfBlockParams - 1].name = xstrdup(name);
param->blockParams[param->numberOfBlockParams - 1].value =
xstrdup(value);
param->blockParams[param->numberOfBlockParams - 1].line = line;
}
static ConfigParam *readConfigBlock(FILE * fp, int *count, char *string)
{
ConfigParam *ret = newConfigParam(NULL, *count);
int i;
int numberOfArgs;
int argsMinusComment;
while (myFgets(string, MAX_STRING_SIZE, fp)) {
char *array[CONF_LINE_TOKEN_MAX] = { NULL };
(*count)++;
numberOfArgs = buffer2array(string, array, CONF_LINE_TOKEN_MAX);
for (i = 0; i < numberOfArgs; i++) {
if (array[i][0] == CONF_COMMENT)
break;
}
argsMinusComment = i;
if (0 == argsMinusComment) {
continue;
}
if (1 == argsMinusComment &&
0 == strcmp(array[0], CONF_BLOCK_END)) {
break;
}
if (2 != argsMinusComment) {
FATAL("improperly formatted config file at line %i:"
" %s\n", *count, string);
}
if (0 == strcmp(array[0], CONF_BLOCK_BEGIN) ||
0 == strcmp(array[1], CONF_BLOCK_BEGIN) ||
0 == strcmp(array[0], CONF_BLOCK_END) ||
0 == strcmp(array[1], CONF_BLOCK_END)) {
FATAL("improperly formatted config file at line %i: %s\n"
"in block beginning at line %i\n",
*count, string, ret->line);
}
addBlockParam(ret, array[0], array[1], *count);
}
return ret;
}
void readConf(const char *file)
{
FILE *fp;
char string[MAX_STRING_SIZE + 1];
int i;
int numberOfArgs;
int argsMinusComment;
int count = 0;
ConfigEntry *entry;
void *voidPtr;
ConfigParam *param;
if (!(fp = fopen(file, "r"))) {
FATAL("problems opening file %s for reading: %s\n", file,
strerror(errno));
}
while (myFgets(string, MAX_STRING_SIZE, fp)) {
char *array[CONF_LINE_TOKEN_MAX] = { NULL };
count++;
numberOfArgs = buffer2array(string, array, CONF_LINE_TOKEN_MAX);
for (i = 0; i < numberOfArgs; i++) {
if (array[i][0] == CONF_COMMENT)
break;
}
argsMinusComment = i;
if (0 == argsMinusComment) {
continue;
}
if (2 != argsMinusComment) {
FATAL("improperly formatted config file at line %i:"
" %s\n", count, string);
}
if (!findInList(configEntriesList, array[0], &voidPtr)) {
FATAL("unrecognized parameter in config file at line "
"%i: %s\n", count, string);
}
entry = (ConfigEntry *) voidPtr;
if (!(entry->mask & CONF_REPEATABLE_MASK) &&
entry->configParamList->numberOfNodes) {
param = entry->configParamList->firstNode->data;
FATAL("config parameter \"%s\" is first defined on line "
"%i and redefined on line %i\n", array[0],
param->line, count);
}
if (entry->mask & CONF_BLOCK_MASK) {
if (0 != strcmp(array[1], CONF_BLOCK_BEGIN)) {
FATAL("improperly formatted config file at "
"line %i: %s\n", count, string);
}
param = readConfigBlock(fp, &count, string);
} else
param = newConfigParam(array[1], count);
insertInListWithoutKey(entry->configParamList, param);
}
fclose(fp);
}
ConfigParam *getNextConfigParam(const char *name, ConfigParam * last)
{
void *voidPtr;
ConfigEntry *entry;
ListNode *node;
ConfigParam *param;
if (!findInList(configEntriesList, name, &voidPtr))
return NULL;
entry = voidPtr;
node = entry->configParamList->firstNode;
if (last) {
while (node != NULL) {
param = node->data;
node = node->nextNode;
if (param == last)
break;
}
}
if (node == NULL)
return NULL;
param = node->data;
return param;
}
char *getConfigParamValue(const char *name)
{
ConfigParam *param = getConfigParam(name);
if (!param)
return NULL;
return param->value;
}
BlockParam *getBlockParam(ConfigParam * param, const char *name)
{
BlockParam *ret = NULL;
int i;
for (i = 0; i < param->numberOfBlockParams; i++) {
if (0 == strcmp(name, param->blockParams[i].name)) {
if (ret) {
ERROR("\"%s\" first defined on line %i, and "
"redefined on line %i\n", name,
ret->line, param->blockParams[i].line);
}
ret = param->blockParams + i;
}
}
return ret;
}
ConfigParam *parseConfigFilePath(const char *name, int force)
{
ConfigParam *param = getConfigParam(name);
char *path;
if (!param && force)
FATAL("config parameter \"%s\" not found\n", name);
if (!param)
return NULL;
path = parsePath(param->value);
if (!path)
FATAL("error parsing \"%s\" at line %i\n", name, param->line);
free(param->value);
param->value = path;
return param;
}
int getBoolConfigParam(const char *name, int force)
{
int ret;
ConfigParam *param = getConfigParam(name);
if (!param)
return CONF_BOOL_UNSET;
ret = get_bool(param->value);
if (force && ret == CONF_BOOL_INVALID)
FATAL("%s is not a boolean value (yes, true, 1) or "
"(no, false, 0) on line %i\n",
name, param->line);
return ret;
}
int getBoolBlockParam(ConfigParam *param, const char *name, int force)
{
int ret;
BlockParam *bp = getBlockParam(param, name);
if (!bp)
return CONF_BOOL_UNSET;
ret = get_bool(bp->value);
if (force && ret == CONF_BOOL_INVALID)
FATAL("%s is not a boolean value (yes, true, 1) or "
"(no, false, 0) on line %i\n", bp->value, bp->line);
return ret;
}