1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/netwerk/wifi/nsWifiScannerFreeBSD.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,167 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +// Developed by J.R. Oldroyd <fbsd@opal.com>, December 2012.
1.9 +
1.10 +// For FreeBSD we use the getifaddrs(3) to obtain the list of interfaces
1.11 +// and then check for those with an 802.11 media type and able to return
1.12 +// a list of stations. This is similar to ifconfig(8).
1.13 +
1.14 +#include <sys/types.h>
1.15 +#include <sys/ioctl.h>
1.16 +#include <sys/socket.h>
1.17 +#include <net/if.h>
1.18 +#include <net/if_media.h>
1.19 +#include <net80211/ieee80211_ioctl.h>
1.20 +
1.21 +#include <ifaddrs.h>
1.22 +#include <string.h>
1.23 +#include <unistd.h>
1.24 +
1.25 +#include "nsWifiAccessPoint.h"
1.26 +
1.27 +using namespace mozilla;
1.28 +
1.29 +static nsresult
1.30 +FreeBSDGetAccessPointData(nsCOMArray<nsWifiAccessPoint> &accessPoints)
1.31 +{
1.32 + // get list of interfaces
1.33 + struct ifaddrs *ifal;
1.34 + if (getifaddrs(&ifal) < 0) {
1.35 + return NS_ERROR_FAILURE;
1.36 + }
1.37 +
1.38 + accessPoints.Clear();
1.39 +
1.40 + // loop through the interfaces
1.41 + nsresult rv = NS_ERROR_FAILURE;
1.42 + struct ifaddrs *ifa;
1.43 + for (ifa = ifal; ifa; ifa = ifa->ifa_next) {
1.44 + // limit to one interface per address
1.45 + if (ifa->ifa_addr->sa_family != AF_LINK) {
1.46 + continue;
1.47 + }
1.48 +
1.49 + // store interface name in socket structure
1.50 + struct ifreq ifr;
1.51 + memset(&ifr, 0, sizeof(ifr));
1.52 + strncpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name));
1.53 + ifr.ifr_addr.sa_family = AF_LOCAL;
1.54 +
1.55 + // open socket to interface
1.56 + int s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0);
1.57 + if (s < 0) {
1.58 + continue;
1.59 + }
1.60 +
1.61 + // clear interface media structure
1.62 + struct ifmediareq ifmr;
1.63 + memset(&ifmr, 0, sizeof(ifmr));
1.64 + strncpy(ifmr.ifm_name, ifa->ifa_name, sizeof(ifmr.ifm_name));
1.65 +
1.66 + // get interface media information
1.67 + if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
1.68 + close(s);
1.69 + continue;
1.70 + }
1.71 +
1.72 + // check interface is a WiFi interface
1.73 + if (IFM_TYPE(ifmr.ifm_active) != IFM_IEEE80211) {
1.74 + close(s);
1.75 + continue;
1.76 + }
1.77 +
1.78 + // perform WiFi scan
1.79 + struct ieee80211req i802r;
1.80 + char iscanbuf[32*1024];
1.81 + memset(&i802r, 0, sizeof(i802r));
1.82 + strncpy(i802r.i_name, ifa->ifa_name, sizeof(i802r.i_name));
1.83 + i802r.i_type = IEEE80211_IOC_SCAN_RESULTS;
1.84 + i802r.i_data = iscanbuf;
1.85 + i802r.i_len = sizeof(iscanbuf);
1.86 + if (ioctl(s, SIOCG80211, &i802r) < 0) {
1.87 + close(s);
1.88 + continue;
1.89 + }
1.90 +
1.91 + // close socket
1.92 + close(s);
1.93 +
1.94 + // loop through WiFi networks and build geoloc-lookup structure
1.95 + char *vsr = (char *) i802r.i_data;
1.96 + unsigned len = i802r.i_len;
1.97 + while (len >= sizeof(struct ieee80211req_scan_result)) {
1.98 + struct ieee80211req_scan_result *isr =
1.99 + (struct ieee80211req_scan_result *) vsr;
1.100 +
1.101 + // determine size of this entry
1.102 + char *id;
1.103 + int idlen;
1.104 + if (isr->isr_meshid_len) {
1.105 + id = vsr + isr->isr_ie_off + isr->isr_ssid_len;
1.106 + idlen = isr->isr_meshid_len;
1.107 + } else {
1.108 + id = vsr + isr->isr_ie_off;
1.109 + idlen = isr->isr_ssid_len;
1.110 + }
1.111 +
1.112 + // copy network data
1.113 + char ssid[IEEE80211_NWID_LEN+1];
1.114 + strncpy(ssid, id, idlen);
1.115 + ssid[idlen] = '\0';
1.116 + nsWifiAccessPoint *ap = new nsWifiAccessPoint();
1.117 + ap->setSSID(ssid, strlen(ssid));
1.118 + ap->setMac(isr->isr_bssid);
1.119 + ap->setSignal(isr->isr_rssi);
1.120 + accessPoints.AppendObject(ap);
1.121 + rv = NS_OK;
1.122 +
1.123 + // log the data
1.124 + LOG(( "FreeBSD access point: "
1.125 + "SSID: %s, MAC: %02x-%02x-%02x-%02x-%02x-%02x, "
1.126 + "Strength: %d, Channel: %dMHz\n",
1.127 + ssid, isr->isr_bssid[0], isr->isr_bssid[1], isr->isr_bssid[2],
1.128 + isr->isr_bssid[3], isr->isr_bssid[4], isr->isr_bssid[5],
1.129 + isr->isr_rssi, isr->isr_freq));
1.130 +
1.131 + // increment pointers
1.132 + len -= isr->isr_len;
1.133 + vsr += isr->isr_len;
1.134 + }
1.135 + }
1.136 +
1.137 + freeifaddrs(ifal);
1.138 +
1.139 + return rv;
1.140 +}
1.141 +
1.142 +nsresult
1.143 +nsWifiMonitor::DoScan()
1.144 +{
1.145 + // Regularly get the access point data.
1.146 +
1.147 + nsCOMArray<nsWifiAccessPoint> lastAccessPoints;
1.148 + nsCOMArray<nsWifiAccessPoint> accessPoints;
1.149 +
1.150 + do {
1.151 + nsresult rv = FreeBSDGetAccessPointData(accessPoints);
1.152 + if (NS_FAILED(rv))
1.153 + return rv;
1.154 +
1.155 + bool accessPointsChanged = !AccessPointsEqual(accessPoints, lastAccessPoints);
1.156 + ReplaceArray(lastAccessPoints, accessPoints);
1.157 +
1.158 + rv = CallWifiListeners(lastAccessPoints, accessPointsChanged);
1.159 + NS_ENSURE_SUCCESS(rv, rv);
1.160 +
1.161 + // wait for some reasonable amount of time. pref?
1.162 + LOG(("waiting on monitor\n"));
1.163 +
1.164 + ReentrantMonitorAutoEnter mon(mReentrantMonitor);
1.165 + mon.Wait(PR_SecondsToInterval(60));
1.166 + }
1.167 + while (mKeepGoing);
1.168 +
1.169 + return NS_OK;
1.170 +}
