static pipeline_t va_pipe_pipeline(pipeline_t result_so_far,
va_list args)
{
pipe_processor_t proc = va_arg(args, pipe_processor_t);
if(proc == NULL)
return result_so_far;
void* aux = va_arg(args, void*);
size_t pipe_size = va_arg(args, size_t);
if(pipe_size == 0)
{
pipe_consumer_free(result_so_far.out);
result_so_far.out = NULL;
return result_so_far;
}
pipe_t* pipe = pipe_new(pipe_size, 0);
pipe_connect(result_so_far.out , proc, aux, pipe_producer_new(pipe));
result_so_far.out = pipe_consumer_new(pipe);
pipe_free(pipe);
return va_pipe_pipeline(result_so_far, args);
}
void close_wtp(wtp_handle_t* handle) {
if (!handle)
{
errno = EINVAL;
return;
}
wtp_stop_hello_thread(handle);
if (handle->monitor_thread) pthread_cancel(handle->monitor_thread);
if (handle->receive_thread) pthread_cancel(handle->receive_thread);
if (handle->msg_send_producer) pipe_producer_free(handle->msg_send_producer);
if (handle->msg_send_consumer) pipe_consumer_free(handle->msg_send_consumer);
if (handle->msg_recv_producer) pipe_producer_free(handle->msg_recv_producer);
if (handle->msg_recv_consumer) pipe_consumer_free(handle->msg_recv_consumer);
if (handle->send_thread) pthread_cancel(handle->send_thread);
if (handle->process_thread) pthread_cancel(handle->process_thread);
if (handle->udp_socket) close(handle->udp_socket);
if (handle->wtp_sta_hashmap) hashmapDelete(handle->wtp_sta_hashmap);
free(handle);
}
static void* process_pipe(void* param)
{
connect_data_t p = *(connect_data_t*)param;
free(param);
char* buf = malloc(DEFAULT_BUFFER_SIZE * pipe_elem_size(PIPE_GENERIC(p.in)));
size_t elems_read;
while((elems_read = pipe_pop(p.in, buf, DEFAULT_BUFFER_SIZE)))
p.proc(buf, elems_read, p.out, p.aux);
p.proc(NULL, 0, NULL, p.aux);
free(buf);
pipe_consumer_free(p.in);
pipe_producer_free(p.out);
return NULL;
}
void *
__dt_worker(void *arg) {
verbose(VERB_OPS, "dnstap: starting dt_worker thread");
dt_env_t *env = (dt_env_t *) arg;
struct sockaddr_in so_service;
so_service.sin_family = AF_INET;
so_service.sin_port = htons(5354);
so_service.sin_addr.s_addr = inet_addr("127.0.0.1");
memset(so_service.sin_zero, 0, sizeof so_service.sin_zero);
if(!__dt_so_connect(env, so_service)) return NULL;
// Pop events off of the queue
dt_message_t * event;
while(pipe_pop(env->so_consumer, &event, 1)) {
if(send(env->so_socket, event, dt_message_size(event), 0) < 0) {
verbose(VERB_OPS, "dnstap: error sending message: %s. Trying to reconnect", strerror(errno));
// Requeue the event for later
pipe_push(env->so_producer, &event, 1);
// And try to reconnect
close(env->so_socket);
if(!__dt_so_connect(env, so_service)) return NULL;
} else {
verbose(VERB_OPS, "dnstap: sent event to dt_service");
dt_message_free(event);
}
}
verbose(VERB_OPS, "dnstap: stopping dt_worker thread");
close(env->so_socket);
pipe_consumer_free(env->so_consumer);
}