+
+void init_sender_status(struct sender_status *ss, char **access_arg,
+ int num_access_args, int port, int max_clients, int default_deny)
+{
+ ss->listen_fd = -1;
+ INIT_LIST_HEAD(&ss->client_list);
+ ss->port = port;
+ acl_init(&ss->acl, access_arg, num_access_args);
+ ss->num_clients = 0;
+ ss->max_clients = max_clients;
+ ss->default_deny = default_deny;
+}
+
+char *get_sender_info(struct sender_status *ss, char *name)
+{
+ char *clnts = NULL, *ret;
+ struct sender_client *sc, *tmp_sc;
+
+ char *acl_contents = acl_get_contents(&ss->acl);
+ list_for_each_entry_safe(sc, tmp_sc, &ss->client_list, node) {
+ char *tmp = make_message("%s%s ", clnts? clnts : "", sc->name);
+ free(clnts);
+ clnts = tmp;
+ }
+ ret = make_message(
+ "%s sender:\n"
+ "\tstatus: %s\n"
+ "\tport: %d\n"
+ "\tnumber of connected clients: %d\n"
+ "\tmaximal number of clients: %d%s\n"
+ "\tconnected clients: %s\n"
+ "\taccess %s list: %s\n",
+ name,
+ (ss->listen_fd >= 0)? "on" : "off",
+ ss->port,
+ ss->num_clients,
+ ss->max_clients,
+ ss->max_clients > 0? "" : " (unlimited)",
+ clnts? clnts : "(none)",
+ ss->default_deny? "allow" : "deny",
+ acl_contents? acl_contents : "(empty)"
+ );
+ free(acl_contents);
+ free(clnts);
+ return ret;
+}
+
+void generic_com_allow(struct sender_command_data *scd,
+ struct sender_status *ss)
+{
+ acl_allow(scd->addr, scd->netmask, &ss->acl, ss->default_deny);
+}
+
+void generic_com_deny(struct sender_command_data *scd,
+ struct sender_status *ss)
+{
+ acl_deny(scd->addr, scd->netmask, &ss->acl, ss->default_deny);
+}
+
+int generic_com_on(struct sender_status *ss, unsigned protocol)
+{
+ int ret;
+
+ if (ss->listen_fd >= 0)
+ return 1;
+ ret = open_sender(protocol, ss->port);
+ if (ret < 0)
+ return ret;
+ ss->listen_fd = ret;
+ return 1;
+}
+
+void generic_com_off(struct sender_status *ss)
+{
+ if (ss->listen_fd < 0)
+ return;
+ PARA_NOTICE_LOG("closing port %d\n", ss->port);
+ close(ss->listen_fd);
+ del_close_on_fork_list(ss->listen_fd);
+ shutdown_clients(ss);
+ ss->listen_fd = -1;
+}
+
+struct sender_client *accept_sender_client(struct sender_status *ss)
+{
+ struct sender_client *sc;
+ int fd, ret = para_accept(ss->listen_fd, NULL, 0);
+ if (ret < 0) {
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ return NULL;
+ }
+ fd = ret;
+ ret = -E_MAX_CLIENTS;
+ if (ss->max_clients > 0 && ss->num_clients >= ss->max_clients)
+ goto err_out;
+ ret = mark_fd_nonblocking(fd);
+ if (ret < 0)
+ goto err_out;
+ ret = acl_check_access(fd, &ss->acl, ss->default_deny);
+ if (ret < 0)
+ goto err_out;
+ ss->num_clients++;
+ sc = para_calloc(sizeof(*sc));
+ sc->fd = fd;
+ sc->name = make_message("%s", remote_name(fd));
+ sc->cq = cq_new(MAX_CQ_BYTES);
+ para_list_add(&sc->node, &ss->client_list);
+ add_close_on_fork_list(fd);
+ PARA_INFO_LOG("accepted client #%d: %s (fd %d)\n", ss->num_clients,
+ sc->name, fd);
+ return sc;
+err_out:
+ PARA_WARNING_LOG("%s\n", para_strerror(-ret));
+ close(fd);
+ return NULL;
+}
+
+char *generic_sender_help(void)
+{
+ return make_message(
+ "usage: {on|off}\n"
+ "usage: {allow|deny} IP mask\n"
+ "example: allow 127.0.0.1 32\n"
+ );
+}