1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
296 lines
6.9 KiB
C
296 lines
6.9 KiB
C
/* $NetBSD: server.c,v 1.2 2009/01/24 17:29:28 plunky Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-NetBSD
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*
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* Copyright (c) 2008 Iain Hibbert
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: server.c,v 1.2 2009/01/24 17:29:28 plunky Exp $");
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#include <sys/ioctl.h>
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#define L2CAP_SOCKET_CHECKED
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#include <bluetooth.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <sdp.h>
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#include <unistd.h>
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#include "btpand.h"
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#include "bnep.h"
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static struct event server_ev;
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static int server_fd;
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static int server_avail;
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static void * server_ss;
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static uint32_t server_handle;
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static void server_open(void);
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static void server_close(void);
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static void server_read(int, short, void *);
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static void server_register(void);
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void
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server_init(void)
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{
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server_fd = -1;
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}
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/*
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* The server_update() function is called whenever the channel count is
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* changed. We maintain the SDP record and open or close the server socket
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* as required.
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*/
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void
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server_update(int count)
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{
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if (server_limit == 0)
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return;
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log_debug("count %d", count);
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server_avail = UINT8_MAX - (count - 1) * UINT8_MAX / server_limit;
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log_info("Service Availability: %d/%d", server_avail, UINT8_MAX);
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if (server_avail == 0 && server_fd != -1)
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server_close();
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if (server_avail > 0 && server_fd == -1)
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server_open();
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if (service_name)
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server_register();
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}
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static void
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server_open(void)
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{
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struct sockaddr_l2cap sa;
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uint16_t mru;
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server_fd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP);
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if (server_fd == -1) {
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log_err("Could not open L2CAP socket: %m");
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exit(EXIT_FAILURE);
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}
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memset(&sa, 0, sizeof(sa));
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sa.l2cap_family = AF_BLUETOOTH;
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sa.l2cap_len = sizeof(sa);
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sa.l2cap_psm = htole16(l2cap_psm);
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sa.l2cap_bdaddr_type = BDADDR_BREDR;
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sa.l2cap_cid = 0;
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bdaddr_copy(&sa.l2cap_bdaddr, &local_bdaddr);
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if (bind(server_fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) {
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log_err("Could not bind server socket: %m");
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exit(EXIT_FAILURE);
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}
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mru = BNEP_MTU_MIN;
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if (setsockopt(server_fd, SOL_L2CAP,
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SO_L2CAP_IMTU, &mru, sizeof(mru)) == -1) {
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log_err("Could not set L2CAP IMTU (%d): %m", mru);
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exit(EXIT_FAILURE);
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}
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if (listen(server_fd, 0) == -1) {
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log_err("Could not listen on server socket: %m");
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exit(EXIT_FAILURE);
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}
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event_set(&server_ev, server_fd, EV_READ | EV_PERSIST, server_read, NULL);
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if (event_add(&server_ev, NULL) == -1) {
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log_err("Could not add server event: %m");
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exit(EXIT_FAILURE);
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}
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log_info("server socket open");
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}
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static void
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server_close(void)
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{
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event_del(&server_ev);
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close(server_fd);
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server_fd = -1;
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log_info("server socket closed");
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}
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/*
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* handle connection request
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*/
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static void
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server_read(int s, short ev, void *arg)
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{
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struct sockaddr_l2cap ra, la;
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channel_t *chan;
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socklen_t len;
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int fd, n;
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uint16_t mru, mtu;
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len = sizeof(ra);
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fd = accept(s, (struct sockaddr *)&ra, &len);
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if (fd == -1)
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return;
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n = 1;
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if (ioctl(fd, FIONBIO, &n) == -1) {
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log_err("Could not set NonBlocking IO: %m");
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close(fd);
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return;
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}
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len = sizeof(mru);
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if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_IMTU, &mru, &len) == -1) {
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log_err("Could not get L2CAP IMTU: %m");
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close(fd);
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return;
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}
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if(mru < BNEP_MTU_MIN) {
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log_err("L2CAP IMTU too small (%d)", mru);
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close(fd);
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return;
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}
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len = sizeof(n);
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if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &n, &len) == -1) {
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log_err("Could not read SO_RCVBUF");
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close(fd);
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return;
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}
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if (n < (mru * 10)) {
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n = mru * 10;
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if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &n, sizeof(n)) == -1)
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log_info("Could not increase SO_RCVBUF (from %d)", n);
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}
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len = sizeof(mtu);
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if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_OMTU, &mtu, &len) == -1) {
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log_err("Could not get L2CAP OMTU: %m");
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close(fd);
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return;
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}
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if (mtu < BNEP_MTU_MIN) {
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log_err("L2CAP OMTU too small (%d)", mtu);
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close(fd);
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return;
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}
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len = sizeof(n);
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if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, &len) == -1) {
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log_err("Could not get socket send buffer size: %m");
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close(fd);
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return;
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}
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if (n < (mtu * 2)) {
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n = mtu * 2;
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if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n)) == -1) {
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log_err("Could not set socket send buffer size (%d): %m", n);
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close(fd);
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return;
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}
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}
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n = mtu;
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if (setsockopt(fd, SOL_SOCKET, SO_SNDLOWAT, &n, sizeof(n)) == -1) {
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log_err("Could not set socket low water mark (%d): %m", n);
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close(fd);
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return;
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}
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len = sizeof(la);
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if (getsockname(fd, (struct sockaddr *)&la, &len) == -1) {
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log_err("Could not get socket address: %m");
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close(fd);
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return;
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}
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log_info("Accepted connection from %s", bt_ntoa(&ra.l2cap_bdaddr, NULL));
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chan = channel_alloc();
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if (chan == NULL) {
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close(fd);
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return;
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}
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chan->send = bnep_send;
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chan->recv = bnep_recv;
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chan->mru = mru;
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chan->mtu = mtu;
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b2eaddr(chan->raddr, &ra.l2cap_bdaddr);
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b2eaddr(chan->laddr, &la.l2cap_bdaddr);
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chan->state = CHANNEL_WAIT_CONNECT_REQ;
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channel_timeout(chan, 10);
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if (!channel_open(chan, fd)) {
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chan->state = CHANNEL_CLOSED;
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channel_free(chan);
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close(fd);
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return;
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}
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}
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static void
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server_register(void)
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{
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sdp_nap_profile_t p;
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int rv;
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if (server_ss == NULL) {
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server_ss = sdp_open_local(control_path);
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if (server_ss == NULL || sdp_error(server_ss) != 0) {
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log_err("failed to contact SDP server");
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return;
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}
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}
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memset(&p, 0, sizeof(p));
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p.psm = l2cap_psm;
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p.load_factor = server_avail;
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p.security_description = (l2cap_mode == 0 ? 0x0000 : 0x0001);
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if (server_handle)
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rv = sdp_change_service(server_ss, server_handle,
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(uint8_t *)&p, sizeof(p));
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else
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rv = sdp_register_service(server_ss, service_class,
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&local_bdaddr, (uint8_t *)&p, sizeof(p), &server_handle);
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if (rv != 0) {
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errno = sdp_error(server_ss);
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log_err("%s: %m", service_name);
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exit(EXIT_FAILURE);
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}
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}
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