/**************************************************************************** * apps/wireless/ieee802154/i8sak/i8sak_acceptassoc.c * IEEE 802.15.4 Swiss Army Knife * * Copyright (C) 2017 Verge Inc. All rights reserved. * Author: Anthony Merlino * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include #include "i8sak.h" #include #include "wireless/ieee802154.h" /**************************************************************************** * Private Function Prototypes ****************************************************************************/ static void acceptassoc_eventcb(FAR struct ieee802154_primitive_s *primitive, FAR void *arg); /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name : i8_acceptassoc * * Description : * Start accepting association requests. ****************************************************************************/ void i8sak_acceptassoc_cmd(FAR struct i8sak_s *i8sak, int argc, FAR char *argv[]) { struct i8sak_eventfilter_s filter; bool acceptall = true; /* Start off assuming we are going to allow all * connections */ int option; int optcnt; int fd; optcnt = 0; while ((option = getopt(argc, argv, ":he:")) != ERROR) { optcnt++; switch (option) { case 'h': fprintf(stderr, "Starts accepting association requests\n" "Usage: %s [-h|e ]\n" " -h = this help menu\n" " -e = only accept requests from eaddr\n" "Note: No option accepts all requests\n" , argv[0]); /* Must manually reset optind if we are going to exit early */ optind = -1; return; case 'e': /* Accept only this extended address */ i8sak_str2eaddr(optarg, &i8sak->ep_addr.eaddr[0]); acceptall = false; break; case ':': fprintf(stderr, "ERROR: missing argument\n"); /* Must manually reset optind if we are going to exit early */ optind = -1; i8sak_cmd_error(i8sak); /* This exits for us */ case '?': fprintf(stderr, "ERROR: invalid argument\n"); /* Must manually reset optind if we are going to exit early */ optind = -1; i8sak_cmd_error(i8sak); /* This exits for us */ } } if (i8sak->mode == I8SAK_MODE_CHAR) { fd = open(i8sak->ifname, O_RDWR); if (fd < 0) { fprintf(stderr, "ERROR: cannot open %s, errno=%d\n", i8sak->ifname, errno); i8sak_cmd_error(i8sak); } ieee802154_setassocpermit(fd, true); } #ifdef CONFIG_NET_6LOWPAN else if (i8sak->mode == I8SAK_MODE_NETIF) { fd = socket(PF_INET6, SOCK_DGRAM, 0); if (fd < 0) { fprintf(stderr, "ERROR: failed to open socket, errno=%d\n", errno); i8sak_cmd_error(i8sak); } sixlowpan_setassocpermit(fd, i8sak->ifname, true); } #endif if (!optcnt) { i8sak->acceptall = acceptall; printf("i8sak: accepting all assoc requests\n"); } i8sak_requestdaemon(i8sak); /* Register new callback for receiving the association notifications */ memset(&filter, 0, sizeof(struct i8sak_eventfilter_s)); filter.indevents.assoc = true; i8sak_eventlistener_addreceiver(i8sak, acceptassoc_eventcb, &filter, !i8sak->acceptall); } static void acceptassoc_eventcb(FAR struct ieee802154_primitive_s *primitive, FAR void *arg) { FAR struct i8sak_s *i8sak = (FAR struct i8sak_s *)arg; struct ieee802154_assoc_resp_s assocresp; printf("i8sak: a device is trying to associate\n"); /* Send a ASSOC.resp primtive to the MAC. Copy the association * indication address into the association response primitive */ IEEE802154_EADDRCOPY(assocresp.devaddr, primitive->u.assocind.devaddr); /* If the address matches our device, accept the association. * Otherwise, reject the association. */ if (i8sak->acceptall || IEEE802154_EADDRCMP(primitive->u.assocind.devaddr, i8sak->ep_addr.eaddr)) { /* Assign the short address */ IEEE802154_SADDRCOPY(assocresp.assocsaddr, i8sak->next_saddr); /* Select a short address for the next association */ i8sak->next_saddr[0]++; if (i8sak->next_saddr[0] == 0) { /* Handle the carry */ i8sak->next_saddr[1]++; DEBUGASSERT(i8sak->next_saddr[1] != 0); } assocresp.status = IEEE802154_STATUS_SUCCESS; printf("i8sak: accepting association request\n"); } else { assocresp.status = IEEE802154_STATUS_DENIED; printf("i8sak: rejecting association request\n"); } if (i8sak->mode == I8SAK_MODE_CHAR) { ieee802154_assoc_resp(i8sak->fd, &assocresp); } #ifdef CONFIG_NET_6LOWPAN else if (i8sak->mode == I8SAK_MODE_NETIF) { sixlowpan_assoc_resp(i8sak->fd, i8sak->ifname, &assocresp); } #endif }