const char *
ni_extension_statedir(const char *ex_name)
{
ni_extension_t *ex = NULL;
ni_config_fslocation_t *fsloc = NULL;
const char *extension_dirname = "extension";
const int mode = 0700;
char pathname[PATH_MAX];
if (!(ni_config_extension_statedir(extension_dirname, mode)))
return NULL;
if (!(ex = ni_config_find_system_updater(ni_global.config, ex_name)))
return NULL;
fsloc = &ex->statedir;
if (fsloc->path == NULL) {
snprintf(pathname, sizeof(pathname), "%s/%s/%s",
ni_config_statedir(), extension_dirname, ex->name);
if (ni_mkdir_maybe(pathname, mode) < 0) {
ni_error("Cannot create extension state directory \"%s\": %m", pathname);
} else {
ni_config_fslocation_init(fsloc, pathname, mode);
}
}
return fsloc->path;
}
/*
* Initialize the system updaters based on the data found in the config
* file.
*/
void
ni_system_updaters_init(void)
{
static int initialized = 0;
unsigned int kind;
if (initialized)
return;
initialized = 1;
for (kind = 0; kind < __NI_ADDRCONF_UPDATER_MAX; ++kind) {
ni_updater_t *updater = &updaters[kind];
const char *name = ni_updater_name(kind);
ni_extension_t *ex;
updater->enabled = FALSE;
updater->kind = kind;
if (name == NULL)
continue;
if (!(ex = ni_config_find_system_updater(ni_global.config, name)))
continue;
updater->enabled = TRUE;
updater->format = ni_updater_format_type(ex->format);
updater->proc_backup = ni_extension_script_find(ex, "backup");
updater->proc_restore = ni_extension_script_find(ex, "restore");
updater->proc_install = ni_extension_script_find(ex, "install");
updater->proc_remove = ni_extension_script_find(ex, "remove");
/* Create runtime directories for resolver and hostname extensions. */
if (!(ni_extension_statedir(name))) {
updater->enabled = 0;
} else
if (updater->proc_install == NULL) {
ni_warn("system-updater %s configured, but no install script defined", name);
updater->enabled = 0;
} else
if (updater->proc_backup == NULL || updater->proc_restore == NULL) {
ni_warn("system-updater %s configured, but no backup/restore script defined", name);
updater->proc_backup = updater->proc_restore = NULL;
} else
if (updater->proc_remove == NULL) {
ni_warn("system-updater %s configured, but no remove script defined", name);
updater->enabled = 0;
}
}
}