/*
* Copy contents of new_listener into existing listener
*/
static void
listener_update(struct Listener *existing_listener, struct Listener *new_listener, const struct Table_head *tables) {
assert(existing_listener != NULL);
assert(new_listener != NULL);
assert(address_compare(existing_listener->address, new_listener->address) == 0);
free(existing_listener->fallback_address);
existing_listener->fallback_address = new_listener->fallback_address;
new_listener->fallback_address = NULL;
free(existing_listener->source_address);
existing_listener->source_address = new_listener->source_address;
new_listener->source_address = NULL;
existing_listener->protocol = new_listener->protocol;
free(existing_listener->table_name);
existing_listener->table_name = new_listener->table_name;
new_listener->table_name = NULL;
logger_ref_put(existing_listener->access_log);
existing_listener->access_log = logger_ref_get(new_listener->access_log);
existing_listener->log_bad_requests = new_listener->log_bad_requests;
struct Table *new_table =
table_lookup(tables, existing_listener->table_name);
if (new_table != NULL) {
init_table(new_table);
table_ref_put(existing_listener->table);
existing_listener->table = table_ref_get(new_table);
table_ref_put(new_listener->table);
new_listener->table = NULL;
}
}
void
add_table(struct Table_head *tables, struct Table *table) {
table_ref_get(table);
SLIST_INSERT_HEAD(tables, table, entries);
}
static int
init_listener(struct Listener *listener, const struct Table_head *tables, struct ev_loop *loop) {
struct Table *table = table_lookup(tables, listener->table_name);
if (table == NULL) {
err("Table \"%s\" not defined", listener->table_name);
return -1;
}
init_table(table);
listener->table = table_ref_get(table);
/* If no port was specified on the fallback address, inherit the address
* from the listening address */
if (listener->fallback_address &&
address_port(listener->fallback_address) == 0)
address_set_port(listener->fallback_address,
address_port(listener->address));
int sockfd = socket(address_sa(listener->address)->sa_family, SOCK_STREAM, 0);
if (sockfd < 0) {
err("socket failed: %s", strerror(errno));
return -2;
}
/* set SO_REUSEADDR on server socket to facilitate restart */
int on = 1;
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
int result = bind(sockfd, address_sa(listener->address),
address_sa_len(listener->address));
if (result < 0 && errno == EACCES) {
/* Retry using binder module */
close(sockfd);
sockfd = bind_socket(address_sa(listener->address),
address_sa_len(listener->address));
if (sockfd < 0) {
char address[128];
err("binder failed to bind to %s",
display_address(listener->address, address, sizeof(address)));
close(sockfd);
return -3;
}
} else if (result < 0) {
char address[128];
err("bind %s failed: %s",
display_address(listener->address, address, sizeof(address)),
strerror(errno));
close(sockfd);
return -3;
}
if (listen(sockfd, SOMAXCONN) < 0) {
err("listen failed: %s", strerror(errno));
close(sockfd);
return -4;
}
int flags = fcntl(sockfd, F_GETFL, 0);
fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
listener_ref_get(listener);
ev_io_init(&listener->watcher, accept_cb, sockfd, EV_READ);
listener->watcher.data = listener;
listener->backoff_timer.data = listener;
ev_io_start(loop, &listener->watcher);
return sockfd;
}