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comparison: netwerk/wifi/nsWifiScannerFreeBSD.cpp
netwerk/wifi/nsWifiScannerFreeBSD.cpp
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- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:156c6568df89 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 // Developed by J.R. Oldroyd <fbsd@opal.com>, December 2012. | |
| 6 | |
| 7 // For FreeBSD we use the getifaddrs(3) to obtain the list of interfaces | |
| 8 // and then check for those with an 802.11 media type and able to return | |
| 9 // a list of stations. This is similar to ifconfig(8). | |
| 10 | |
| 11 #include <sys/types.h> | |
| 12 #include <sys/ioctl.h> | |
| 13 #include <sys/socket.h> | |
| 14 #include <net/if.h> | |
| 15 #include <net/if_media.h> | |
| 16 #include <net80211/ieee80211_ioctl.h> | |
| 17 | |
| 18 #include <ifaddrs.h> | |
| 19 #include <string.h> | |
| 20 #include <unistd.h> | |
| 21 | |
| 22 #include "nsWifiAccessPoint.h" | |
| 23 | |
| 24 using namespace mozilla; | |
| 25 | |
| 26 static nsresult | |
| 27 FreeBSDGetAccessPointData(nsCOMArray<nsWifiAccessPoint> &accessPoints) | |
| 28 { | |
| 29 // get list of interfaces | |
| 30 struct ifaddrs *ifal; | |
| 31 if (getifaddrs(&ifal) < 0) { | |
| 32 return NS_ERROR_FAILURE; | |
| 33 } | |
| 34 | |
| 35 accessPoints.Clear(); | |
| 36 | |
| 37 // loop through the interfaces | |
| 38 nsresult rv = NS_ERROR_FAILURE; | |
| 39 struct ifaddrs *ifa; | |
| 40 for (ifa = ifal; ifa; ifa = ifa->ifa_next) { | |
| 41 // limit to one interface per address | |
| 42 if (ifa->ifa_addr->sa_family != AF_LINK) { | |
| 43 continue; | |
| 44 } | |
| 45 | |
| 46 // store interface name in socket structure | |
| 47 struct ifreq ifr; | |
| 48 memset(&ifr, 0, sizeof(ifr)); | |
| 49 strncpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name)); | |
| 50 ifr.ifr_addr.sa_family = AF_LOCAL; | |
| 51 | |
| 52 // open socket to interface | |
| 53 int s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0); | |
| 54 if (s < 0) { | |
| 55 continue; | |
| 56 } | |
| 57 | |
| 58 // clear interface media structure | |
| 59 struct ifmediareq ifmr; | |
| 60 memset(&ifmr, 0, sizeof(ifmr)); | |
| 61 strncpy(ifmr.ifm_name, ifa->ifa_name, sizeof(ifmr.ifm_name)); | |
| 62 | |
| 63 // get interface media information | |
| 64 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) { | |
| 65 close(s); | |
| 66 continue; | |
| 67 } | |
| 68 | |
| 69 // check interface is a WiFi interface | |
| 70 if (IFM_TYPE(ifmr.ifm_active) != IFM_IEEE80211) { | |
| 71 close(s); | |
| 72 continue; | |
| 73 } | |
| 74 | |
| 75 // perform WiFi scan | |
| 76 struct ieee80211req i802r; | |
| 77 char iscanbuf[32*1024]; | |
| 78 memset(&i802r, 0, sizeof(i802r)); | |
| 79 strncpy(i802r.i_name, ifa->ifa_name, sizeof(i802r.i_name)); | |
| 80 i802r.i_type = IEEE80211_IOC_SCAN_RESULTS; | |
| 81 i802r.i_data = iscanbuf; | |
| 82 i802r.i_len = sizeof(iscanbuf); | |
| 83 if (ioctl(s, SIOCG80211, &i802r) < 0) { | |
| 84 close(s); | |
| 85 continue; | |
| 86 } | |
| 87 | |
| 88 // close socket | |
| 89 close(s); | |
| 90 | |
| 91 // loop through WiFi networks and build geoloc-lookup structure | |
| 92 char *vsr = (char *) i802r.i_data; | |
| 93 unsigned len = i802r.i_len; | |
| 94 while (len >= sizeof(struct ieee80211req_scan_result)) { | |
| 95 struct ieee80211req_scan_result *isr = | |
| 96 (struct ieee80211req_scan_result *) vsr; | |
| 97 | |
| 98 // determine size of this entry | |
| 99 char *id; | |
| 100 int idlen; | |
| 101 if (isr->isr_meshid_len) { | |
| 102 id = vsr + isr->isr_ie_off + isr->isr_ssid_len; | |
| 103 idlen = isr->isr_meshid_len; | |
| 104 } else { | |
| 105 id = vsr + isr->isr_ie_off; | |
| 106 idlen = isr->isr_ssid_len; | |
| 107 } | |
| 108 | |
| 109 // copy network data | |
| 110 char ssid[IEEE80211_NWID_LEN+1]; | |
| 111 strncpy(ssid, id, idlen); | |
| 112 ssid[idlen] = '\0'; | |
| 113 nsWifiAccessPoint *ap = new nsWifiAccessPoint(); | |
| 114 ap->setSSID(ssid, strlen(ssid)); | |
| 115 ap->setMac(isr->isr_bssid); | |
| 116 ap->setSignal(isr->isr_rssi); | |
| 117 accessPoints.AppendObject(ap); | |
| 118 rv = NS_OK; | |
| 119 | |
| 120 // log the data | |
| 121 LOG(( "FreeBSD access point: " | |
| 122 "SSID: %s, MAC: %02x-%02x-%02x-%02x-%02x-%02x, " | |
| 123 "Strength: %d, Channel: %dMHz\n", | |
| 124 ssid, isr->isr_bssid[0], isr->isr_bssid[1], isr->isr_bssid[2], | |
| 125 isr->isr_bssid[3], isr->isr_bssid[4], isr->isr_bssid[5], | |
| 126 isr->isr_rssi, isr->isr_freq)); | |
| 127 | |
| 128 // increment pointers | |
| 129 len -= isr->isr_len; | |
| 130 vsr += isr->isr_len; | |
| 131 } | |
| 132 } | |
| 133 | |
| 134 freeifaddrs(ifal); | |
| 135 | |
| 136 return rv; | |
| 137 } | |
| 138 | |
| 139 nsresult | |
| 140 nsWifiMonitor::DoScan() | |
| 141 { | |
| 142 // Regularly get the access point data. | |
| 143 | |
| 144 nsCOMArray<nsWifiAccessPoint> lastAccessPoints; | |
| 145 nsCOMArray<nsWifiAccessPoint> accessPoints; | |
| 146 | |
| 147 do { | |
| 148 nsresult rv = FreeBSDGetAccessPointData(accessPoints); | |
| 149 if (NS_FAILED(rv)) | |
| 150 return rv; | |
| 151 | |
| 152 bool accessPointsChanged = !AccessPointsEqual(accessPoints, lastAccessPoints); | |
| 153 ReplaceArray(lastAccessPoints, accessPoints); | |
| 154 | |
| 155 rv = CallWifiListeners(lastAccessPoints, accessPointsChanged); | |
| 156 NS_ENSURE_SUCCESS(rv, rv); | |
| 157 | |
| 158 // wait for some reasonable amount of time. pref? | |
| 159 LOG(("waiting on monitor\n")); | |
| 160 | |
| 161 ReentrantMonitorAutoEnter mon(mReentrantMonitor); | |
| 162 mon.Wait(PR_SecondsToInterval(60)); | |
| 163 } | |
| 164 while (mKeepGoing); | |
| 165 | |
| 166 return NS_OK; | |
| 167 } |
