示例#1
0
// Status records the fuse.Status result of an operation.
func (r *LogEntry) Status(status syscall.Errno) syscall.Errno {
	if r.status != "" {
		panic(fmt.Sprintf("status already set to '%s', can't set to '%s'", r.status, status))
	}
	if status == OK {
		r.status = "OK"
	} else {
		r.status = status.Error()
	}
	return status
}
示例#2
0
func QueryMonitor() (status WiFiStatus) {

	// Pointers to memory allocated by Windows. WlanFreeMemory must be called to free it
	var (
		ilist *WLAN_INTERFACE_INFO_LIST
		nlist *WLAN_AVAILABLE_NETWORK_LIST
		blist *WLAN_BSS_LIST
	)

	var (
		guid GUID
		e    syscall.Errno
	)
	e = WlanEnumInterfaces(handle, 0, &ilist)
	if e != ERROR_SUCCESS {
		status.Error = "WlanEnumInterfaces: " + e.Error()
		return status
	}
	defer WlanFreeMemory(uintptr(unsafe.Pointer(ilist)))

	if ilist.dwNumberOfItems == 0 {
		status.Error = "No wireless interfaces found"
		return
	}

	// Search for a connected interface
	for i := 0; i < int(ilist.dwNumberOfItems); i++ {
		status.State = interfaceStates[ilist.InterfaceInfo[i].isState]
		if ilist.InterfaceInfo[i].isState == wlan_interface_state_connected {
			guid = ilist.InterfaceInfo[i].InterfaceGuid
			break
		}
		if i == MAX_INDEX {
			break
		}
	}

	if status.State != interfaceStates[wlan_interface_state_connected] {
		return
	}

	e = WlanGetAvailableNetworkList(handle, &guid,
		WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_ADHOC_PROFILES&WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_MANUAL_HIDDEN_PROFILES,
		0, &nlist)
	if e != ERROR_SUCCESS {
		status.Error = "WlanGetAvailableNetworkList: " + e.Error()
		return
	}
	defer WlanFreeMemory(uintptr(unsafe.Pointer(nlist)))

	for i := 0; i < int(nlist.dwNumberOfItems); i++ {
		// Find the connected network
		if nlist.Network[i].dwFlags&WLAN_AVAILABLE_NETWORK_CONNECTED == WLAN_AVAILABLE_NETWORK_CONNECTED {
			// The character set of the SSID is undefined. For display make sure it only contains printable UTF-8 characters
			ssid := make([]byte, nlist.Network[i].dot11Ssid.uSSIDLength)
			for j, _ := range ssid {
				ssid[j] = nlist.Network[i].dot11Ssid.ucSSID[j] & 0x7F
				if ssid[j] < 32 {
					ssid[j] = 32
				}
			}
			status.Ssid = string(ssid)

			e = WlanGetNetworkBssList(handle,
				&guid,
				&(nlist.Network[i].dot11Ssid),
				nlist.Network[i].dot11BssType,
				nlist.Network[i].bSecurityEnabled,
				0,
				&blist)
			if e != ERROR_SUCCESS {
				status.Error = "WlanGetNetworkBssList: " + e.Error()
				return
			}
			defer WlanFreeMemory(uintptr(unsafe.Pointer(blist)))

			// Find the best signal
			for j := 0; j < int(blist.dwNumberOfItems); j++ {
				if blist.wlanBssEntries[j].uLinkQuality > status.SignalQuality {
					status.SignalQuality = blist.wlanBssEntries[j].uLinkQuality
					status.Rssi = blist.wlanBssEntries[j].lRssi
				}
			}
			if status.Rssi < minRssi {
				minRssi = status.Rssi
			}
			if status.Rssi > maxRssi {
				maxRssi = status.Rssi
			}
			status.RssiPercent = ((status.Rssi - minRssi) * 100) / (maxRssi - minRssi)
			return
		}

	}
	return
}