l2

package
v0.0.0-...-19fda0b Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Dec 14, 2020 License: Apache-2.0 Imports: 27 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	EDDYSTONE16    = []byte{0xAA, 0xFE}
	CH_PROXY_WRITE = []byte{0xDD, 0x2A}
	CH_PROXY_NOTIF = []byte{0xDE, 0x2A}
)
View Source 
var (
	AlreadyConnected = errors.New("Already connected")
)

Functions

func DhcpServer 

func DhcpServer(dhcpIf string) error

Start a DHCP server on an interface.

This is at L2 because it is used to allow local devices to communicate on the same network. Android expects an IPv4 address to establish P2P connections.

func Schedule 

func Schedule(ctx context.Context, p time.Duration,
	o time.Duration, f func(time.Time))

Schedule calls function `f` with a period `p` offsetted by `o`. Aligned with the duration (fixed)

func ScheduleBeacon 

func ScheduleBeacon(nanc *wifi.Nan)

func Uint64 

func Uint64(b net.HardwareAddr) uint64

Types

type BLE 

type BLE struct {
	// contains filtered or unexported fields
}

BLE provides L2 connectivity with other nodes supporting BLE. This uses an extension of EddyStone beacon - advertising the DMesh ID. The extension consists on using the proxy characteristics (from BLE Mesh service) to also allow packet exchange.

Has a matching Android implementation as well as ESP32. When running on Android, the BLE is implemented by the Android process using the core libraries - this is used on linux hosts.

func (*BLE) CleanOlder 

func (b *BLE) CleanOlder(d time.Duration)

func (*BLE) Scan 

func (b *BLE) Scan(d time.Duration) error

Discover BLE devices of the right type. If found, attempt to connect to create mesh links. TODO: select strongest signal, limit the numbers.

type BLENode 

type BLENode struct {
	msgs.MsgConnection

	Addr ble.Addr
	Name string

	Last time.Time
	// contains filtered or unexported fields
}

Tracks a BLE peer.

func (*BLENode) String 

func (b *BLENode) String() string

type DHCPHandler 

type DHCPHandler struct {
	// contains filtered or unexported fields
}

func (*DHCPHandler) ServeDHCP 

func (h *DHCPHandler) ServeDHCP(p dhcp.Packet, msgType dhcp.MessageType, options dhcp.Options) (d dhcp.Packet)

type L2 

type L2 struct {
	// contains filtered or unexported fields
}

func NewL2 

func NewL2(mux *msgs.Mux) *L2

func (*L2) InitBLE 

func (l2 *L2) InitBLE() (*BLE, error)

Requires capabilities on the binary or root Uses a AF_BLUETOOTH socket and HCI.

Creates a 'serial' connection over BLE.

func (*L2) InitMon 

func (l2 *L2) InitMon(iface *wifi.Interface) error

func (*L2) InitWifi 

func (l2 *L2) InitWifi() error

Low level Wifi, using monitor interfaces and netlink. Supports a subset of WifiAware, as well as extensions to handle the lack of low-level support.

func (*L2) NewWPA 

func (l2 *L2) NewWPA(baseDir string, refresh int, ap string) (*WPA, error)

baseDir defaults to /var/run/wpa_supplicant

type WPA 

type WPA struct {
	// P2P and normal interface are separated.
	// Multiple wifi interfaces supported.
	// TODO: ESP32 or equivalent modems connected via serial or BLE, supporting
	// other frequencies.
	Interfaces map[string]*WifiInterface
	// contains filtered or unexported fields
}

func (*WPA) HandleMessage 

func (c *WPA) HandleMessage(ctx context.Context, cmd string, meta map[string]string, data []byte)

Messages on "wifi" topic, for this node.

scan disc con ssid psk p2p wpa - low level wpa command, "i" and "c" params

type WPANetwork 

type WPANetwork struct {
	Id    int
	SSID  string
	ESSID string
	Flags string // [CURRENT]
}

Wifi network info - list of networks registered. See wifiManager.getConfiguredNetworks(), plus get current wifi.

type WifiInterface 

type WifiInterface struct {

	// Primary interface name.
	Interface string

	// Last scan results (raw). Includes known and DIRECT networks.
	LastScan *mesh.L2NetStatus
	ScanTime time.Time

	// Keep track of discovered P2P devices.
	P2PByMAC  map[string]*mesh.MeshDevice
	P2PBySSID map[string]*mesh.MeshDevice
	// contains filtered or unexported fields
}

func DialWPA 

func DialWPA(wpap *WPA, base, ifname string, refreshSeconds int, ap string) (*WifiInterface, error)

DialWPA connects to a real interface. Requires root or NET_ADMIN

func (*WifiInterface) APStart 

func (c *WifiInterface) APStart()

Attempt to start P2P AP, using channel 6 if possible so NAN can work

func (*WifiInterface) APStop 

func (c *WifiInterface) APStop()

func (*WifiInterface) AddNetwork 

func (c *WifiInterface) AddNetwork() (int, error)

func (*WifiInterface) Connect 

func (c *WifiInterface) Connect(meta map[string]string, ssid, pass string) error

func (*WifiInterface) DisableNetwork 

func (c *WifiInterface) DisableNetwork(networkId int) error

func (*WifiInterface) EnableNetwork 

func (c *WifiInterface) EnableNetwork(networkId int) error

func (*WifiInterface) GetNetworkSetting 

func (c *WifiInterface) GetNetworkSetting(networkId int, variable string) (string, error)

func (*WifiInterface) ListNetworks 

func (c *WifiInterface) ListNetworks() ([]*WPANetwork, error)

func (*WifiInterface) OnP2PGroupStart 

func (c *WifiInterface) OnP2PGroupStart(parts []string)

Called as result of ... 

P2P-GROUP-STARTED p2p-wlp2s0-0 GO ssid="DIRECT-JF" freq=2437 passphrase="DKAcUzpO" go_dev_addr=38:ba:f8:49:d3:c0

func (*WifiInterface) OnP2PGroupStop 

func (c *WifiInterface) OnP2PGroupStop(parts []string)

<3>P2P-GROUP-REMOVED p2p-wlp2s0-4 GO reason=REQUESTED

func (*WifiInterface) P2PDiscover 

func (c *WifiInterface) P2PDiscover()

start peer discovery with DNSSD. Events will be sent, discovery will auto-terminate Uses a hard-coded time of 6 seconds ( TODO: and override )

func (*WifiInterface) Redial 

func (i *WifiInterface) Redial() error

func (*WifiInterface) ReloadConfiguration 

func (c *WifiInterface) ReloadConfiguration() error

func (*WifiInterface) RemoveNetwork 

func (c *WifiInterface) RemoveNetwork(networkId int) error

func (*WifiInterface) SaveConfiguration 

func (c *WifiInterface) SaveConfiguration() error

func (*WifiInterface) Scan 

func (c *WifiInterface) Scan()

func (*WifiInterface) SelectNetwork 

func (c *WifiInterface) SelectNetwork(networkId int) error

func (*WifiInterface) SendCommand 

func (c *WifiInterface) SendCommand(command string) (string, error)

PING STATUS: address, p2p_device_address RECONNECT,REASSOCIATE p2p_group_add OK <3>P2P-GROUP-STARTED p2p-wlp2s0-0 GO ssid="DIRECT-OF" freq=2437 passphrase="5BqiXAgj" go_dev_addr=cc:2f:71:c8:f3:99 <3>P2P-SERV-DISC-REQ 2437 da:50:e6:91:5b:cb 0 22 02000117 P2P_SERV_DISC_EXTERNAL 1 -> 0 means to reject disc req, 1 to respond with ...

func (*WifiInterface) SendCommandBool 

func (c *WifiInterface) SendCommandBool(command string) error

func (*WifiInterface) SendCommandInt 

func (c *WifiInterface) SendCommandInt(command string) (int, error)

func (*WifiInterface) SendCommandP2P 

func (c *WifiInterface) SendCommandP2P(command string) (string, error)

func (*WifiInterface) SetNetworkSettingRaw 

func (c *WifiInterface) SetNetworkSettingRaw(networkId int, variable string, value string) error

func (*WifiInterface) SetNetworkSettingString 

func (c *WifiInterface) SetNetworkSettingString(networkId int, variable string, value string) error

func (*WifiInterface) Status 

func (c *WifiInterface) Status() map[string]string

func (*WifiInterface) UpdateLoop 

func (c *WifiInterface) UpdateLoop(refresh int)

Source Files

View all Source files

Directories

Path Synopsis
Package nl80211 is an auto-generated package which contains constants and types used to access nl80211 information using generic netlink.
 Package nl80211 is an auto-generated package which contains constants and types used to access nl80211 information using generic netlink.

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