void client_init(void) { struct sockaddr_l2cap sa; channel_t *chan; socklen_t len; int fd, n; uint16_t mru, mtu; if (bdaddr_any(&remote_bdaddr)) return; if (service_name) client_query(); fd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP); if (fd == -1) { log_err("Could not open L2CAP socket: %m"); exit(EXIT_FAILURE); } memset(&sa, 0, sizeof(sa)); sa.l2cap_family = AF_BLUETOOTH; sa.l2cap_len = sizeof(sa); sa.l2cap_bdaddr_type = BDADDR_BREDR; sa.l2cap_cid = 0; bdaddr_copy(&sa.l2cap_bdaddr, &local_bdaddr); if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) { log_err("Could not bind client socket: %m"); exit(EXIT_FAILURE); } mru = BNEP_MTU_MIN; if (setsockopt(fd, SOL_L2CAP, SO_L2CAP_IMTU, &mru, sizeof(mru)) == -1) { log_err("Could not set L2CAP IMTU (%d): %m", mru); exit(EXIT_FAILURE); } log_info("Opening connection to service 0x%4.4x at %s", service_class, bt_ntoa(&remote_bdaddr, NULL)); sa.l2cap_psm = htole16(l2cap_psm); bdaddr_copy(&sa.l2cap_bdaddr, &remote_bdaddr); if (connect(fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) { log_err("Could not connect: %m"); exit(EXIT_FAILURE); } len = sizeof(mru); if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_IMTU, &mru, &len) == -1) { log_err("Could not get IMTU: %m"); exit(EXIT_FAILURE); } if (mru < BNEP_MTU_MIN) { log_err("L2CAP IMTU too small (%d)", mru); exit(EXIT_FAILURE); } len = sizeof(n); if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &n, &len) == -1) { log_err("Could not read SO_RCVBUF"); exit(EXIT_FAILURE); } if (n < (mru * 10)) { n = mru * 10; if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &n, sizeof(n)) == -1) log_info("Could not increase SO_RCVBUF (from %d)", n); } len = sizeof(mtu); if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_OMTU, &mtu, &len) == -1) { log_err("Could not get L2CAP OMTU: %m"); exit(EXIT_FAILURE); } if (mtu < BNEP_MTU_MIN) { log_err("L2CAP OMTU too small (%d)", mtu); exit(EXIT_FAILURE); } len = sizeof(n); if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, &len) == -1) { log_err("Could not get socket send buffer size: %m"); close(fd); return; } if (n < (mtu * 2)) { n = mtu * 2; if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n)) == -1) { log_err("Could not set socket send buffer size (%d): %m", n); close(fd); return; } } n = mtu; if (setsockopt(fd, SOL_SOCKET, SO_SNDLOWAT, &n, sizeof(n)) == -1) { log_err("Could not set socket low water mark (%d): %m", n); close(fd); return; } chan = channel_alloc(); if (chan == NULL) exit(EXIT_FAILURE); chan->send = bnep_send; chan->recv = bnep_recv; chan->mru = mru; chan->mtu = mtu; b2eaddr(chan->raddr, &remote_bdaddr); b2eaddr(chan->laddr, &local_bdaddr); chan->state = CHANNEL_WAIT_CONNECT_RSP; channel_timeout(chan, 10); if (!channel_open(chan, fd)) exit(EXIT_FAILURE); bnep_send_control(chan, BNEP_SETUP_CONNECTION_REQUEST, 2, service_class, SDP_SERVICE_CLASS_PANU); }
void tap_init(void) { channel_t *chan; struct ifreq ifr; int fd, s; char pidfile[PATH_MAX]; fd = open(interface_name, O_RDWR); if (fd == -1) { log_err("Could not open \"%s\": %m", interface_name); exit(EXIT_FAILURE); } memset(&ifr, 0, sizeof(ifr)); if (ioctl(fd, TAPGIFNAME, &ifr) == -1) { log_err("Could not get interface name: %m"); exit(EXIT_FAILURE); } s = socket(AF_INET, SOCK_DGRAM, 0); if (s == -1) { log_err("Could not open PF_LINK socket: %m"); exit(EXIT_FAILURE); } ifr.ifr_addr.sa_family = AF_LINK; ifr.ifr_addr.sa_len = ETHER_ADDR_LEN; b2eaddr(ifr.ifr_addr.sa_data, &local_bdaddr); if (ioctl(s, SIOCSIFLLADDR, &ifr) == -1) { log_err("Could not set %s physical address: %m", ifr.ifr_name); exit(EXIT_FAILURE); } if (ioctl(s, SIOCGIFFLAGS, &ifr) == -1) { log_err("Could not get interface flags: %m"); exit(EXIT_FAILURE); } if ((ifr.ifr_flags & IFF_UP) == 0) { ifr.ifr_flags |= IFF_UP; if (ioctl(s, SIOCSIFFLAGS, &ifr) == -1) { log_err("Could not set IFF_UP: %m"); exit(EXIT_FAILURE); } } close(s); log_info("Using interface %s with addr %s", ifr.ifr_name, ether_ntoa((struct ether_addr *)&ifr.ifr_addr.sa_data)); chan = channel_alloc(); if (chan == NULL) exit(EXIT_FAILURE); chan->send = tap_send; chan->recv = tap_recv; chan->mru = ETHER_HDR_LEN + ETHER_MAX_LEN; memcpy(chan->raddr, ifr.ifr_addr.sa_data, ETHER_ADDR_LEN); memcpy(chan->laddr, ifr.ifr_addr.sa_data, ETHER_ADDR_LEN); chan->state = CHANNEL_OPEN; if (!channel_open(chan, fd)) exit(EXIT_FAILURE); snprintf(pidfile, sizeof(pidfile), "%s/%s.pid", _PATH_VARRUN, ifr.ifr_name); chan->pfh = pidfile_open(pidfile, 0600, NULL); if (chan->pfh == NULL) log_err("can't create pidfile"); else if (pidfile_write(chan->pfh) < 0) { log_err("can't write pidfile"); pidfile_remove(chan->pfh); chan->pfh = NULL; } }
/* * handle connection request */ static void server_read(int s, short ev, void *arg) { struct sockaddr_l2cap ra, la; channel_t *chan; socklen_t len; int fd, n; uint16_t mru, mtu; len = sizeof(ra); fd = accept(s, (struct sockaddr *)&ra, &len); if (fd == -1) return; n = 1; if (ioctl(fd, FIONBIO, &n) == -1) { log_err("Could not set NonBlocking IO: %m"); close(fd); return; } len = sizeof(mru); if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_IMTU, &mru, &len) == -1) { log_err("Could not get L2CAP IMTU: %m"); close(fd); return; } if(mru < BNEP_MTU_MIN) { log_err("L2CAP IMTU too small (%d)", mru); close(fd); return; } len = sizeof(n); if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &n, &len) == -1) { log_err("Could not read SO_RCVBUF"); close(fd); return; } if (n < (mru * 10)) { n = mru * 10; if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &n, sizeof(n)) == -1) log_info("Could not increase SO_RCVBUF (from %d)", n); } len = sizeof(mtu); if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_OMTU, &mtu, &len) == -1) { log_err("Could not get L2CAP OMTU: %m"); close(fd); return; } if (mtu < BNEP_MTU_MIN) { log_err("L2CAP OMTU too small (%d)", mtu); close(fd); return; } len = sizeof(n); if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, &len) == -1) { log_err("Could not get socket send buffer size: %m"); close(fd); return; } if (n < (mtu * 2)) { n = mtu * 2; if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n)) == -1) { log_err("Could not set socket send buffer size (%d): %m", n); close(fd); return; } } n = mtu; if (setsockopt(fd, SOL_SOCKET, SO_SNDLOWAT, &n, sizeof(n)) == -1) { log_err("Could not set socket low water mark (%d): %m", n); close(fd); return; } len = sizeof(la); if (getsockname(fd, (struct sockaddr *)&la, &len) == -1) { log_err("Could not get socket address: %m"); close(fd); return; } log_info("Accepted connection from %s", bt_ntoa(&ra.l2cap_bdaddr, NULL)); chan = channel_alloc(); if (chan == NULL) { close(fd); return; } chan->send = bnep_send; chan->recv = bnep_recv; chan->mru = mru; chan->mtu = mtu; b2eaddr(chan->raddr, &ra.l2cap_bdaddr); b2eaddr(chan->laddr, &la.l2cap_bdaddr); chan->state = CHANNEL_WAIT_CONNECT_REQ; channel_timeout(chan, 10); if (!channel_open(chan, fd)) { chan->state = CHANNEL_CLOSED; channel_free(chan); close(fd); return; } }