gchar *
cfg_args_format_varargs(CfgArgs *self, CfgArgs *defaults)
{
GString *varargs = g_string_new("");
gpointer user_data[] = { defaults, varargs };
cfg_args_foreach(self, _resolve_unknown_blockargs_as_varargs, user_data);
return g_string_free(varargs, FALSE);
}
gboolean
confgen_exec_generate(CfgBlockGenerator *s, GlobalConfig *cfg, CfgArgs *args, GString *result, const gchar *reference)
{
ConfgenExec *self = (ConfgenExec *) s;
FILE *out;
gchar buf[256];
gint res;
g_snprintf(buf, sizeof(buf), "%s confgen %s", cfg_lexer_lookup_context_name_by_type(self->super.context),
self->super.name);
cfg_args_foreach(args, confgen_set_args_as_env, NULL);
out = popen(self->exec, "r");
cfg_args_foreach(args, confgen_unset_args_from_env, NULL);
if (!out)
{
msg_error("confgen: Error executing generator program",
evt_tag_str("reference", reference),
evt_tag_str("context", cfg_lexer_lookup_context_name_by_type(self->super.context)),
evt_tag_str("block", self->super.name),
evt_tag_str("exec", self->exec),
evt_tag_error("error"));
return FALSE;
}
_read_program_output(out, result);
res = pclose(out);
if (res != 0)
{
msg_error("confgen: Generator program returned with non-zero exit code",
evt_tag_str("reference", reference),
evt_tag_str("context", cfg_lexer_lookup_context_name_by_type(self->super.context)),
evt_tag_str("block", self->super.name),
evt_tag_str("exec", self->exec),
evt_tag_int("rc", res));
return FALSE;
}
msg_debug("confgen: output from the executed program to be included is",
evt_tag_printf("block", "%.*s", (gint) result->len, result->str));
return TRUE;
}
gboolean
cfg_args_validate(CfgArgs *self, CfgArgs *defs, const gchar *context)
{
gpointer validate_params[] = { defs, NULL, NULL };
cfg_args_foreach(self, cfg_args_validate_callback, validate_params);
if (validate_params[1])
{
msg_error("Unknown argument",
evt_tag_str("context", context),
evt_tag_str("arg", validate_params[1]),
evt_tag_str("value", validate_params[2]));
return FALSE;
}
return TRUE;
}