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Diffstat (limited to 'trunk/src/conf.c')
| -rw-r--r-- | trunk/src/conf.c | 450 |
1 files changed, 450 insertions, 0 deletions
diff --git a/trunk/src/conf.c b/trunk/src/conf.c new file mode 100644 index 000000000..8ab59a505 --- /dev/null +++ b/trunk/src/conf.c @@ -0,0 +1,450 @@ +/* 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" + +#include <sys/param.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/types.h> +#include <pwd.h> +#include <errno.h> + +#define MAX_STRING_SIZE MAXPATHLEN+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 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(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_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(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(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(char *name) +{ + ConfigParam *param = getConfigParam(name); + + if (!param) + return NULL; + + return param->value; +} + +int getBoolConfigParam(char *name) +{ + ConfigParam *param; + + param = getConfigParam(name); + if (!param) return -1; + + if (strcmp("yes", param->value) == 0) return 1; + else if (strcmp("no", param->value) == 0) return 0; + + ERROR("%s is not \"yes\" or \"no\" on line %i\n", name, param->line); + + return -2; +} + +BlockParam *getBlockParam(ConfigParam * param, 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(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 = param->value; + + if (path[0] != '/' && path[0] != '~') { + FATAL("\"%s\" is not an absolute path at line %i\n", + param->value, param->line); + } + /* Parse ~ in path */ + else if (path[0] == '~') { + struct passwd *pwd = NULL; + char *newPath; + int pos = 1; + if (path[1] == '/' || path[1] == '\0') { + ConfigParam *userParam = getConfigParam(CONF_USER); + + if (userParam) { + pwd = getpwnam(userParam->value); + if (!pwd) { + FATAL("no such user %s at line %i\n", + userParam->value, + userParam->line); + } + } else { + uid_t uid = geteuid(); + if ((pwd = getpwuid(uid)) == NULL) { + FATAL("problems getting passwd entry " + "for current user\n"); + } + } + } else { + int foundSlash = 0; + char *ch = path + 1; + for (; *ch != '\0' && *ch != '/'; ch++) ; + if (*ch == '/') + foundSlash = 1; + *ch = '\0'; + pos += ch - path - 1; + if ((pwd = getpwnam(path + 1)) == NULL) { + FATAL("user \"%s\" not found at line %i\n", + path + 1, param->line); + } + if (foundSlash) + *ch = '/'; + } + newPath = xmalloc(strlen(pwd->pw_dir) + strlen(path + pos) + 1); + strcpy(newPath, pwd->pw_dir); + strcat(newPath, path + pos); + free(param->value); + param->value = newPath; + } + + return param; +} |