~donmcc/ood

ref: 1182412fd4ece0cb55c4b3ebefee78b22c8c15bd ood/src/dood/server.c -rw-r--r-- 3.6 KiB
1182412fDon McCaughey Add `ood_halt()` function. 3 months ago
                                                                                
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#include "server.h"

#include <stdlib.h>
#include <stdio.h>


void
server_add_socket(struct server *server, struct ood_inet_socket *socket) {
    if (!ood_ptr_array_add(server->sockets, socket)) {
        ood_halt("unable to add socket");
    }
}


enum ood_result
server_add_listener(struct server *server,
                    in_addr_t in_addr,
                    in_port_t in_port,
                    int backlog,
                    ood_inet_socket_fn *on_read,
                    ood_inet_socket_fn *on_error)
{
    struct ood_inet_socket *listener = ood_inet_socket_alloc(in_addr, in_port);
    if (!listener) {
        return ood_error;
    }
    listener->data = server;
    listener->on_error = on_error;
    listener->on_read = on_read;
    ood_ptr_array_add(server->sockets, listener);

    if (!ood_inet_socket_listen(listener, backlog)) {
        return ood_error;
    }

    printf("dood: listening on %s\n", listener->address->formatted);
    return ood_okay;
}


void
server_add_sockets_to_select_sets(struct server *server,
                                  struct ood_select_sets *select_sets)
{
    ood_select_sets_clear(select_sets);

    int i = 0;
    struct ood_inet_socket *socket;
    while ((socket = ood_ptr_array_next(server->sockets, &i))) {
        if (socket->on_error) ood_select_sets_add_errorable(select_sets, socket->fd);
        if (socket->on_read) ood_select_sets_add_reader(select_sets, socket->fd);
        if (socket->on_write) ood_select_sets_add_writer(select_sets, socket->fd);
    }
}


struct server *
server_alloc(int socket_capacity)
{
    struct server *server = calloc(1, sizeof(struct server));
    if (!server) return NULL;

    server->sockets = ood_ptr_array_alloc(socket_capacity);
    if (!server->sockets) {
        free(server);
        return NULL;
    }

    return server;
}


bool
server_can_accept_connections(struct server *server)
{
    return ood_ptr_array_has_capacity(server->sockets);
}


void
server_close_all_listeners(struct server *server)
{
    for (int i = 0; i < server->sockets->capacity; ++i) {
        if (!server->sockets->items[i]) continue;
        struct ood_inet_socket *socket = (struct ood_inet_socket *)server->sockets->items[i];
        if (OOD_INET_SOCKET_FLAGS_LISTENING & socket->flags) {
            printf("dood: no longer listening on %s\n", socket->address->formatted);
            ood_inet_socket_free(socket);
            server->sockets->items = NULL;
            --server->sockets->count;
        }
    }
}


void
server_close_socket(struct server *server, struct ood_inet_socket *socket) {
    if (!ood_ptr_array_clear(server->sockets, socket)) {
        ood_halt("unable to close socket");
    }
    ood_inet_socket_free(socket);
}


void
server_free(struct server *server)
{
    if (server) {
        ood_ptr_array_free(server->sockets);
        free(server);
    }
}


void
server_handle_events_in_select_sets(struct server *server,
                                    struct ood_select_sets *select_sets)
{
    int i = 0;
    struct ood_inet_socket *socket;
    while ((socket = ood_ptr_array_next(server->sockets, &i))) {
        if (socket->on_error && ood_select_sets_has_error(select_sets, socket->fd)) {
            socket->on_error(socket);
            continue;
        }

        if (socket->on_read && ood_select_sets_is_readable(select_sets, socket->fd)) {
            socket->on_read(socket);
        }

        if (socket->on_write && ood_select_sets_is_writable(select_sets, socket->fd)) {
            socket->on_write(socket);
        }
    }
}


bool
server_is_running(struct server *server)
{
    return server->sockets->count > 0;
}