const char *config_set(const char *section, const char *name, const char *value)
{
struct config_value *cv;
debug(D_CONFIG, "request to set config in section '%s', name '%s', value '%s'", section, name, value);
pthread_rwlock_wrlock(&config_rwlock);
struct config *co = config_find_section(section);
if(!co) co = config_create(section);
cv = config_value_index_find(co, name, 0);
if(!cv) cv = config_value_create(co, name, value);
cv->flags |= CONFIG_VALUE_USED;
if(strcmp(cv->value, value) != 0) cv->flags |= CONFIG_VALUE_CHANGED;
free(cv->value);
cv->value = strdup(value);
if(!cv->value) fatal("Cannot allocate config.value");
pthread_rwlock_unlock(&config_rwlock);
return value;
}
char *config_get(const char *section, const char *name, const char *default_value)
{
struct config_value *cv;
debug(D_CONFIG, "request to get config in section '%s', name '%s', default_value '%s'", section, name, default_value);
pthread_rwlock_rdlock(&config_rwlock);
struct config *co = config_find_section(section);
if(!co) co = config_create(section);
cv = config_value_index_find(co, name, 0);
if(!cv) {
cv = config_value_create(co, name, default_value);
if(!cv) return NULL;
}
cv->flags |= CONFIG_VALUE_USED;
if((cv->flags & CONFIG_VALUE_LOADED) || (cv->flags & CONFIG_VALUE_CHANGED)) {
// this is a loaded value from the config file
// if it is different that the default, mark it
if(!(cv->flags & CONFIG_VALUE_CHECKED)) {
if(strcmp(cv->value, default_value) != 0) cv->flags |= CONFIG_VALUE_CHANGED;
cv->flags |= CONFIG_VALUE_CHECKED;
}
}
pthread_rwlock_unlock(&config_rwlock);
return(cv->value);
}
const char *config_set_default(const char *section, const char *name, const char *value)
{
struct config_value *cv;
debug(D_CONFIG, "request to set config in section '%s', name '%s', value '%s'", section, name, value);
struct config *co = config_find_section(section);
if(!co) return config_set(section, name, value);
cv = config_value_index_find(co, name, 0);
if(!cv) return config_set(section, name, value);
cv->flags |= CONFIG_VALUE_USED;
if(cv->flags & CONFIG_VALUE_LOADED)
return cv->value;
if(strcmp(cv->value, value) != 0) {
cv->flags |= CONFIG_VALUE_CHANGED;
free(cv->value);
cv->value = strdup(value);
if(!cv->value) fatal("Cannot allocate config.value");
}
return cv->value;
}
int config_exists(const char *section, const char *name) {
struct config_value *cv;
debug(D_CONFIG, "request to get config in section '%s', name '%s'", section, name);
struct config *co = config_section_find(section);
if(!co) return 0;
cv = config_value_index_find(co, name, 0);
if(!cv) return 0;
return 1;
}
int load_config(char *filename, int overwrite_used)
{
int line = 0;
struct config *co = NULL;
pthread_rwlock_wrlock(&config_rwlock);
char buffer[CONFIG_FILE_LINE_MAX + 1], *s;
if(!filename) filename = CONFIG_DIR "/" CONFIG_FILENAME;
FILE *fp = fopen(filename, "r");
if(!fp) {
error("Cannot open file '%s'", CONFIG_DIR "/" CONFIG_FILENAME);
pthread_rwlock_unlock(&config_rwlock);
return 0;
}
while(fgets(buffer, CONFIG_FILE_LINE_MAX, fp) != NULL) {
buffer[CONFIG_FILE_LINE_MAX] = '\0';
line++;
s = trim(buffer);
if(!s) {
debug(D_CONFIG, "Ignoring line %d, it is empty.", line);
continue;
}
int len = strlen(s);
if(*s == '[' && s[len - 1] == ']') {
// new section
s[len - 1] = '\0';
s++;
co = config_find_section(s);
if(!co) co = config_create(s);
continue;
}
if(!co) {
// line outside a section
error("Ignoring line %d ('%s'), it is outsize all sections.", line, s);
continue;
}
char *name = s;
char *value = strchr(s, '=');
if(!value) {
error("Ignoring line %d ('%s'), there is no = in it.", line, s);
continue;
}
*value = '\0';
value++;
name = trim(name);
value = trim(value);
if(!name) {
error("Ignoring line %d, name is empty.", line);
continue;
}
if(!value) {
debug(D_CONFIG, "Ignoring line %d, value is empty.", line);
continue;
}
struct config_value *cv = config_value_index_find(co, name, 0);
if(!cv) cv = config_value_create(co, name, value);
else {
if(((cv->flags & CONFIG_VALUE_USED) && overwrite_used) || !(cv->flags & CONFIG_VALUE_USED)) {
debug(D_CONFIG, "Overwriting '%s/%s'.", line, co->name, cv->name);
free(cv->value);
cv->value = strdup(value);
if(!cv->value) fatal("Cannot allocate config.value");
}
else
debug(D_CONFIG, "Ignoring line %d, '%s/%s' is already present and used.", line, co->name, cv->name);
}
cv->flags |= CONFIG_VALUE_LOADED;
}
fclose(fp);
pthread_rwlock_unlock(&config_rwlock);
return 1;
}
