// Execute state machine as long as we have events
static void
server_client_execute (server_t *self, client_t *client, int event)
{
client->next_event = event;
while (client->next_event) {
client->event = client->next_event;
client->next_event = 0;
switch (client->state) {
case start_state:
if (client->event == ohai_event) {
try_anonymous_access (self, client);
client->state = checking_client_state;
}
else
if (client->event == heartbeat_event) {
}
else
if (client->event == expired_event) {
terminate_the_client (self, client);
}
else {
// Process all other events
fmq_msg_set_id (client->reply, FMQ_MSG_RTFM);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
terminate_the_client (self, client);
}
break;
case checking_client_state:
if (client->event == friend_event) {
fmq_msg_set_id (client->reply, FMQ_MSG_OHAI_OK);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
client->state = ready_state;
}
else
if (client->event == foe_event) {
fmq_msg_set_id (client->reply, FMQ_MSG_SRSLY);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
terminate_the_client (self, client);
}
else
if (client->event == maybe_event) {
list_security_mechanisms (self, client);
fmq_msg_set_id (client->reply, FMQ_MSG_ORLY);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
client->state = challenging_client_state;
}
else
if (client->event == heartbeat_event) {
}
else
if (client->event == expired_event) {
terminate_the_client (self, client);
}
else
if (client->event == ohai_event) {
try_anonymous_access (self, client);
client->state = checking_client_state;
}
else {
// Process all other events
fmq_msg_set_id (client->reply, FMQ_MSG_RTFM);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
terminate_the_client (self, client);
}
break;
case challenging_client_state:
if (client->event == yarly_event) {
try_security_mechanism (self, client);
client->state = checking_client_state;
}
else
if (client->event == heartbeat_event) {
}
else
if (client->event == expired_event) {
terminate_the_client (self, client);
}
else
if (client->event == ohai_event) {
try_anonymous_access (self, client);
client->state = checking_client_state;
}
else {
// Process all other events
fmq_msg_set_id (client->reply, FMQ_MSG_RTFM);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
terminate_the_client (self, client);
}
break;
case ready_state:
if (client->event == icanhaz_event) {
store_client_subscription (self, client);
fmq_msg_set_id (client->reply, FMQ_MSG_ICANHAZ_OK);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
}
else
if (client->event == nom_event) {
store_client_credit (self, client);
get_next_patch_for_client (self, client);
client->state = dispatching_state;
}
else
if (client->event == hugz_event) {
fmq_msg_set_id (client->reply, FMQ_MSG_HUGZ_OK);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
}
else
if (client->event == kthxbai_event) {
terminate_the_client (self, client);
}
else
if (client->event == dispatch_event) {
get_next_patch_for_client (self, client);
client->state = dispatching_state;
}
else
if (client->event == heartbeat_event) {
fmq_msg_set_id (client->reply, FMQ_MSG_HUGZ);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
}
else
if (client->event == expired_event) {
terminate_the_client (self, client);
}
else
if (client->event == ohai_event) {
try_anonymous_access (self, client);
client->state = checking_client_state;
}
else {
// Process all other events
fmq_msg_set_id (client->reply, FMQ_MSG_RTFM);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
terminate_the_client (self, client);
}
break;
case dispatching_state:
if (client->event == send_chunk_event) {
fmq_msg_set_id (client->reply, FMQ_MSG_CHEEZBURGER);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
get_next_patch_for_client (self, client);
}
else
if (client->event == send_delete_event) {
fmq_msg_set_id (client->reply, FMQ_MSG_CHEEZBURGER);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
get_next_patch_for_client (self, client);
}
else
if (client->event == next_patch_event) {
get_next_patch_for_client (self, client);
}
else
if (client->event == no_credit_event) {
client->state = ready_state;
}
else
if (client->event == finished_event) {
client->state = ready_state;
}
else
if (client->event == heartbeat_event) {
}
else
if (client->event == expired_event) {
terminate_the_client (self, client);
}
else
if (client->event == ohai_event) {
try_anonymous_access (self, client);
client->state = checking_client_state;
}
else {
// Process all other events
fmq_msg_set_id (client->reply, FMQ_MSG_RTFM);
fmq_msg_send (&client->reply, client->router);
client->reply = fmq_msg_new (0);
fmq_msg_set_address (client->reply, client->address);
terminate_the_client (self, client);
}
break;
}
if (client->next_event == terminate_event) {
// Automatically calls client_destroy
zhash_delete (self->clients, client->hashkey);
break;
}
}
}
static void
client_execute (client_t *self, int event)
{
self->next_event = event;
while (self->next_event) {
self->event = self->next_event;
self->next_event = 0;
switch (self->state) {
case start_state:
if (self->event == ready_event) {
fmq_msg_id_set (self->request, FMQ_MSG_OHAI);
fmq_msg_send (&self->request, self->dealer);
self->request = fmq_msg_new (0);
self->state = requesting_access_state;
}
else
if (self->event == srsly_event) {
log_access_denied (self);
terminate_the_client (self);
self->state = start_state;
}
else
if (self->event == rtfm_event) {
log_invalid_message (self);
terminate_the_client (self);
}
else {
log_protocol_error (self);
terminate_the_client (self);
}
break;
case requesting_access_state:
if (self->event == orly_event) {
try_security_mechanism (self);
fmq_msg_id_set (self->request, FMQ_MSG_YARLY);
fmq_msg_send (&self->request, self->dealer);
self->request = fmq_msg_new (0);
self->state = requesting_access_state;
}
else
if (self->event == ohai_ok_event) {
connected_to_server (self);
get_first_subscription (self);
self->state = subscribing_state;
}
else
if (self->event == srsly_event) {
log_access_denied (self);
terminate_the_client (self);
self->state = start_state;
}
else
if (self->event == rtfm_event) {
log_invalid_message (self);
terminate_the_client (self);
}
else {
log_protocol_error (self);
terminate_the_client (self);
}
break;
case subscribing_state:
if (self->event == ok_event) {
fmq_msg_id_set (self->request, FMQ_MSG_ICANHAZ);
fmq_msg_send (&self->request, self->dealer);
self->request = fmq_msg_new (0);
get_next_subscription (self);
self->state = subscribing_state;
}
else
if (self->event == finished_event) {
refill_credit_as_needed (self);
self->state = ready_state;
}
else
if (self->event == srsly_event) {
log_access_denied (self);
terminate_the_client (self);
self->state = start_state;
}
else
if (self->event == rtfm_event) {
log_invalid_message (self);
terminate_the_client (self);
}
else {
log_protocol_error (self);
terminate_the_client (self);
}
break;
case ready_state:
if (self->event == cheezburger_event) {
process_the_patch (self);
refill_credit_as_needed (self);
}
else
if (self->event == hugz_event) {
fmq_msg_id_set (self->request, FMQ_MSG_HUGZ_OK);
fmq_msg_send (&self->request, self->dealer);
self->request = fmq_msg_new (0);
}
else
if (self->event == subscribe_event) {
fmq_msg_id_set (self->request, FMQ_MSG_ICANHAZ);
fmq_msg_send (&self->request, self->dealer);
self->request = fmq_msg_new (0);
}
else
if (self->event == send_credit_event) {
fmq_msg_id_set (self->request, FMQ_MSG_NOM);
fmq_msg_send (&self->request, self->dealer);
self->request = fmq_msg_new (0);
}
else
if (self->event == icanhaz_ok_event) {
}
else
if (self->event == srsly_event) {
log_access_denied (self);
terminate_the_client (self);
self->state = start_state;
}
else
if (self->event == rtfm_event) {
log_invalid_message (self);
terminate_the_client (self);
}
else {
log_protocol_error (self);
terminate_the_client (self);
}
break;
}
if (self->next_event == terminate_event) {
self->stopped = true;
break;
}
}
}