netenv

package
v0.7.13 Latest Latest
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 Go to latest Published: Dec 22, 2021 License: AGPL-3.0 Imports: 34 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	ModuleName               = "netenv"
	NetworkChangedEvent      = "network changed"
	OnlineStatusChangedEvent = "online status changed"
)

Event Names

Variables

View Source 
var (
	PortalTestIP  = net.IPv4(192, 0, 2, 1)
	PortalTestURL = fmt.Sprintf("http://%s/", PortalTestIP)

	DNSTestDomain     = "one.one.one.one."
	DNSTestExpectedIP = net.IPv4(1, 1, 1, 1)

	DNSFallbackTestDomain     = "dns-check.safing.io."
	DNSFallbackTestExpectedIP = net.IPv4(0, 65, 67, 75) // Ascii: \0ACK

	ConnectedToSPN = abool.New()

	// SpecialCaptivePortalDomain is the domain name used to point to the detected captive portal IP
	// or the captive portal test IP. The default value should be overridden by the resolver package,
	// which defines the custom internal domain name to use.
	SpecialCaptivePortalDomain = "captiveportal.invalid."

	// ConnectivityDomains holds all connectivity domains. This slice must not be modified.
	ConnectivityDomains = []string{
		SpecialCaptivePortalDomain,
		DNSTestDomain,
		DNSFallbackTestDomain,

		"dns.msftncsi.com.",
		"msftncsi.com.",
		"www.msftncsi.com.",
		"microsoftconnecttest.com.",
		"www.microsoftconnecttest.com.",
		"ipv6.microsoftconnecttest.com.",

		"captive.apple.com.",

		"connectivity-check.ubuntu.com.",
		"nmcheck.gnome.org.",
		"network-test.debian.org.",
		"204.pop-os.org.",
		"conncheck.opensuse.org.",

		"connectivitycheck.gstatic.com.",

		"neverssl.com.",
		"detectportal.firefox.com.",
	}
)

Online Status and Resolver

Functions

func Gateways 

func Gateways() []net.IP

Gateways returns the currently active gateways.

func GetApproximateInternetLocation 

func GetApproximateInternetLocation() (net.IP, error)

DEPRECATED: Please use GetInternetLocation instead.

func GetAssignedAddresses 

func GetAssignedAddresses() (ipv4 []net.IP, ipv6 []net.IP, err error)

GetAssignedAddresses returns the assigned IPv4 and IPv6 addresses of the host.

func GetAssignedGlobalAddresses 

func GetAssignedGlobalAddresses() (ipv4 []net.IP, ipv6 []net.IP, err error)

GetAssignedGlobalAddresses returns the assigned global IPv4 and IPv6 addresses of the host.

func GetNetworkChangedFlag added in v0.6.9 

func GetNetworkChangedFlag() *utils.Flag

func IsConnectivityDomain added in v0.4.12 

func IsConnectivityDomain(domain string) bool

IsConnectivityDomain checks whether the given domain (fqdn) is used for any connectivity related network connections and should always be resolved using the network assigned DNS server.

func IsMyIP added in v0.5.2 

func IsMyIP(ip net.IP) (yes bool, err error)

IsMyIP returns whether the given unicast IP is currently configured on the local host. Broadcast or multicast addresses will never match, even if valid in in use.

func ListenToICMP added in v0.6.9 

func ListenToICMP(targetIP net.IP) (packets chan packet.Packet, done func())

ListenToICMP returns a new channel for listenting to icmp packets. Please note that any icmp packet will be passed and filtering must be done on the side of the caller. The caller must call the returned done function when done with the listener.

func Online 

func Online() bool

Online returns true if online status is either SemiOnline or Online.

func ReportFailedConnection 

func ReportFailedConnection()

ReportFailedConnection hints the online status monitoring system that a connection attempt has failed. This function has extremely low overhead and may be called as much as wanted.

func ReportSuccessfulConnection 

func ReportSuccessfulConnection()

ReportSuccessfulConnection hints the online status monitoring system that a connection attempt was successful.

func SetLocalAddrFactory 

func SetLocalAddrFactory(laf func(network string) net.Addr)

SetLocalAddrFactory supplies the environment package with a function to get permitted local addresses for connections.

func SubmitPacketToICMPListener added in v0.6.9 

func SubmitPacketToICMPListener(pkt packet.Packet) (submitted bool)

SubmitPacketToICMPListener checks if an ICMP packet should be submitted to the listener. If so, it is submitted right away. The function returns whether or not the packet should be submitted, not if it was successful.

Types

type CaptivePortal added in v0.4.12 

type CaptivePortal struct {
	URL    string
	Domain string
	IP     net.IP
}

CaptivePortal holds information about a detected captive portal.

func GetCaptivePortal added in v0.4.12 

func GetCaptivePortal() *CaptivePortal

GetCaptivePortal returns the current captive portal. The returned struct must not be edited.

type DeviceLocation added in v0.6.9 

type DeviceLocation struct {
	IP             net.IP
	IPVersion      packet.IPVersion
	Location       *geoip.Location
	Source         DeviceLocationSource
	SourceAccuracy int
}

DeviceLocation represents a single IP and metadata. It must not be changed once created.

func SetInternetLocation added in v0.6.9 

func SetInternetLocation(ip net.IP, source DeviceLocationSource) (dl *DeviceLocation, ok bool)

func (*DeviceLocation) IsMoreAccurateThan added in v0.6.9 

func (dl *DeviceLocation) IsMoreAccurateThan(other *DeviceLocation) bool

IsMoreAccurateThan checks if the device location is more accurate than the given one.

func (*DeviceLocation) LocationOrNil added in v0.7.0 

func (dl *DeviceLocation) LocationOrNil() *geoip.Location

func (*DeviceLocation) String added in v0.7.0 

func (dl *DeviceLocation) String() string

type DeviceLocationSource added in v0.6.9 

type DeviceLocationSource string
const (
	SourceInterface  DeviceLocationSource = "interface"
	SourcePeer       DeviceLocationSource = "peer"
	SourceUPNP       DeviceLocationSource = "upnp"
	SourceTraceroute DeviceLocationSource = "traceroute"
	SourceTimezone   DeviceLocationSource = "timezone"
	SourceOther      DeviceLocationSource = "other"
)

func (DeviceLocationSource) Accuracy added in v0.6.9 

func (dls DeviceLocationSource) Accuracy() int

type DeviceLocations added in v0.6.9 

type DeviceLocations struct {
	All []*DeviceLocation
}

func GetInternetLocation added in v0.6.9 

func GetInternetLocation() (deviceLocations *DeviceLocations, ok bool)

func (*DeviceLocations) Best added in v0.6.9 

func (dl *DeviceLocations) Best() *DeviceLocation

func (*DeviceLocations) BestV4 added in v0.7.0 

func (dl *DeviceLocations) BestV4() *DeviceLocation

func (*DeviceLocations) BestV6 added in v0.7.0 

func (dl *DeviceLocations) BestV6() *DeviceLocation

type Nameserver 

type Nameserver struct {
	IP     net.IP
	Search []string
}

Nameserver describes a system assigned namserver.

func Nameservers 

func Nameservers() []Nameserver

Nameservers returns the currently active nameservers.

type OnlineStatus 

type OnlineStatus uint8

OnlineStatus represent a state of connectivity to the Internet. 

const (
	StatusUnknown    OnlineStatus = 0
	StatusOffline    OnlineStatus = 1
	StatusLimited    OnlineStatus = 2 // local network only
	StatusPortal     OnlineStatus = 3 // there seems to be an internet connection, but we are being intercepted, possibly by a captive portal
	StatusSemiOnline OnlineStatus = 4 // we seem to online, but without full connectivity
	StatusOnline     OnlineStatus = 5
)

Online Status Values

func CheckAndGetOnlineStatus 

func CheckAndGetOnlineStatus() OnlineStatus

CheckAndGetOnlineStatus triggers a new online status check and returns the result

func GetOnlineStatus 

func GetOnlineStatus() OnlineStatus

GetOnlineStatus returns the current online stats.

func (OnlineStatus) String 

func (os OnlineStatus) String() string

Source Files

View all Source files

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