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package sockaddr
import "strings"
// ifAddrAttrMap is a map of the IfAddr type-specific attributes.
var ifAddrAttrMap map[AttrName]func(IfAddr) string
var ifAddrAttrs []AttrName
func init() {
ifAddrAttrInit()
}
// GetPrivateIP returns a string with a single IP address that is part of RFC
// 6890 and has a default route. If the system can't determine its IP address
// or find an RFC 6890 IP address, an empty string will be returned instead.
// This function is the `eval` equivalent of:
//
// ```
// $ sockaddr eval -r '{{GetPrivateInterfaces | attr "address"}}'
/// ```
func GetPrivateIP() (string, error) {
privateIfs, err := GetPrivateInterfaces()
if err != nil {
return "", err
}
if len(privateIfs) < 1 {
return "", nil
}
ifAddr := privateIfs[0]
ip := *ToIPAddr(ifAddr.SockAddr)
return ip.NetIP().String(), nil
}
// GetPrivateIPs returns a string with all IP addresses that are part of RFC
// 6890 (regardless of whether or not there is a default route, unlike
// GetPublicIP). If the system can't find any RFC 6890 IP addresses, an empty
// string will be returned instead. This function is the `eval` equivalent of:
//
// ```
// $ sockaddr eval -r '{{GetAllInterfaces | include "RFC" "6890" | join "address" " "}}'
/// ```
func GetPrivateIPs() (string, error) {
ifAddrs, err := GetAllInterfaces()
if err != nil {
return "", err
} else if len(ifAddrs) < 1 {
return "", nil
}
ifAddrs, _ = FilterIfByType(ifAddrs, TypeIP)
if len(ifAddrs) == 0 {
return "", nil
}
OrderedIfAddrBy(AscIfType, AscIfNetworkSize).Sort(ifAddrs)
ifAddrs, _, err = IfByRFC("6890", ifAddrs)
if err != nil {
return "", err
} else if len(ifAddrs) == 0 {
return "", nil
}
_, ifAddrs, err = IfByRFC(ForwardingBlacklistRFC, ifAddrs)
if err != nil {
return "", err
} else if len(ifAddrs) == 0 {
return "", nil
}
ips := make([]string, 0, len(ifAddrs))
for _, ifAddr := range ifAddrs {
ip := *ToIPAddr(ifAddr.SockAddr)
s := ip.NetIP().String()
ips = append(ips, s)
}
return strings.Join(ips, " "), nil
}
// GetPublicIP returns a string with a single IP address that is NOT part of RFC
// 6890 and has a default route. If the system can't determine its IP address
// or find a non RFC 6890 IP address, an empty string will be returned instead.
// This function is the `eval` equivalent of:
//
// ```
// $ sockaddr eval -r '{{GetPublicInterfaces | attr "address"}}'
/// ```
func GetPublicIP() (string, error) {
publicIfs, err := GetPublicInterfaces()
if err != nil {
return "", err
} else if len(publicIfs) < 1 {
return "", nil
}
ifAddr := publicIfs[0]
ip := *ToIPAddr(ifAddr.SockAddr)
return ip.NetIP().String(), nil
}
// GetPublicIPs returns a string with all IP addresses that are NOT part of RFC
// 6890 (regardless of whether or not there is a default route, unlike
// GetPublicIP). If the system can't find any non RFC 6890 IP addresses, an
// empty string will be returned instead. This function is the `eval`
// equivalent of:
//
// ```
// $ sockaddr eval -r '{{GetAllInterfaces | exclude "RFC" "6890" | join "address" " "}}'
/// ```
func GetPublicIPs() (string, error) {
ifAddrs, err := GetAllInterfaces()
if err != nil {
return "", err
} else if len(ifAddrs) < 1 {
return "", nil
}
ifAddrs, _ = FilterIfByType(ifAddrs, TypeIP)
if len(ifAddrs) == 0 {
return "", nil
}
OrderedIfAddrBy(AscIfType, AscIfNetworkSize).Sort(ifAddrs)
_, ifAddrs, err = IfByRFC("6890", ifAddrs)
if err != nil {
return "", err
} else if len(ifAddrs) == 0 {
return "", nil
}
ips := make([]string, 0, len(ifAddrs))
for _, ifAddr := range ifAddrs {
ip := *ToIPAddr(ifAddr.SockAddr)
s := ip.NetIP().String()
ips = append(ips, s)
}
return strings.Join(ips, " "), nil
}
// GetInterfaceIP returns a string with a single IP address sorted by the size
// of the network (i.e. IP addresses with a smaller netmask, larger network
// size, are sorted first). This function is the `eval` equivalent of:
//
// ```
// $ sockaddr eval -r '{{GetAllInterfaces | include "name" <<ARG>> | sort "type,size" | include "flag" "forwardable" | attr "address" }}'
/// ```
func GetInterfaceIP(namedIfRE string) (string, error) {
ifAddrs, err := GetAllInterfaces()
if err != nil {
return "", err
}
ifAddrs, _, err = IfByName(namedIfRE, ifAddrs)
if err != nil {
return "", err
}
ifAddrs, _, err = IfByFlag("forwardable", ifAddrs)
if err != nil {
return "", err
}
ifAddrs, err = SortIfBy("+type,+size", ifAddrs)
if err != nil {
return "", err
}
if len(ifAddrs) == 0 {
return "", err
}
ip := ToIPAddr(ifAddrs[0].SockAddr)
if ip == nil {
return "", err
}
return IPAddrAttr(*ip, "address"), nil
}
// GetInterfaceIPs returns a string with all IPs, sorted by the size of the
// network (i.e. IP addresses with a smaller netmask, larger network size, are
// sorted first), on a named interface. This function is the `eval` equivalent
// of:
//
// ```
// $ sockaddr eval -r '{{GetAllInterfaces | include "name" <<ARG>> | sort "type,size" | join "address" " "}}'
/// ```
func GetInterfaceIPs(namedIfRE string) (string, error) {
ifAddrs, err := GetAllInterfaces()
if err != nil {
return "", err
}
ifAddrs, _, err = IfByName(namedIfRE, ifAddrs)
if err != nil {
return "", err
}
ifAddrs, err = SortIfBy("+type,+size", ifAddrs)
if err != nil {
return "", err
}
if len(ifAddrs) == 0 {
return "", err
}
ips := make([]string, 0, len(ifAddrs))
for _, ifAddr := range ifAddrs {
ip := *ToIPAddr(ifAddr.SockAddr)
s := ip.NetIP().String()
ips = append(ips, s)
}
return strings.Join(ips, " "), nil
}
// IfAddrAttrs returns a list of attributes supported by the IfAddr type
func IfAddrAttrs() []AttrName {
return ifAddrAttrs
}
// IfAddrAttr returns a string representation of an attribute for the given
// IfAddr.
func IfAddrAttr(ifAddr IfAddr, attrName AttrName) string {
fn, found := ifAddrAttrMap[attrName]
if !found {
return ""
}
return fn(ifAddr)
}
// ifAddrAttrInit is called once at init()
func ifAddrAttrInit() {
// Sorted for human readability
ifAddrAttrs = []AttrName{
"flags",
"name",
}
ifAddrAttrMap = map[AttrName]func(ifAddr IfAddr) string{
"flags": func(ifAddr IfAddr) string {
return ifAddr.Interface.Flags.String()
},
"name": func(ifAddr IfAddr) string {
return ifAddr.Interface.Name
},
}
}