[management] network map from nmap data type (#6919)

Signed-off-by: Dmitri Dolguikh <dmitri.external@netbird.io>
Co-authored-by: Dmitri Dolguikh <dmitri.external@netbird.io>

shared/management/networkmap/nmdata/peer.go

@@ -0,0 +1,129 @@
+package nmdata
+
+import (
+	"net"
+	"net/netip"
+	"slices"
+	"time"
+)
+
+// Peer capability constants mirror the proto enum values.
+const (
+	PeerCapabilitySourcePrefixes      int32 = 1
+	PeerCapabilityIPv6Overlay         int32 = 2
+	PeerCapabilityComponentNetworkMap int32 = 3
+)
+
+// Peer is the slim twin of peer.Peer.
+type Peer struct {
+	ID                     string
+	Key                    string
+	SSHKey                 string
+	DNSLabel               string
+	UserID                 string
+	SSHEnabled             bool
+	LoginExpirationEnabled bool
+	LastLogin              *time.Time
+	IP                     netip.Addr
+	IPv6                   netip.Addr
+	RequiresApproval       bool
+	ExtraDNSLabels         []string
+	Meta                   PeerSystemMeta
+	ProxyMeta              ProxyMeta
+	Location               PeerLocation
+}
+
+// ProxyMeta is the slim twin of peer.ProxyMeta.
+type ProxyMeta struct {
+	Embedded bool
+	Cluster  string
+}
+
+// PeerSystemMeta is the slim twin of peer.PeerSystemMeta.
+type PeerSystemMeta struct {
+	WtVersion          string
+	GoOS               string
+	OSVersion          string
+	KernelVersion      string
+	NetworkAddresses   []NetworkAddress
+	Files              []File
+	Capabilities       []int32
+	Flags              Flags
+	SyncMessageVersion int
+}
+
+// Flags is the slim twin of peer.Flags.
+type Flags struct {
+	ServerSSHAllowed bool
+	DisableIPv6      bool
+}
+
+// NetworkAddress is the slim twin of peer.NetworkAddress.
+type NetworkAddress struct {
+	NetIP netip.Prefix
+}
+
+// File is the slim twin of peer.File.
+type File struct {
+	Path             string
+	ProcessIsRunning bool
+}
+
+// PeerLocation is the slim twin of peer.Location.
+type PeerLocation struct {
+	CountryCode  string
+	CityName     string
+	ConnectionIP net.IP
+}
+
+func (p *Peer) HasCapability(capability int32) bool {
+	return slices.Contains(p.Meta.Capabilities, capability)
+}
+
+func (p *Peer) SupportsIPv6() bool {
+	return !p.Meta.Flags.DisableIPv6 && p.HasCapability(PeerCapabilityIPv6Overlay)
+}
+
+func (p *Peer) SupportsSourcePrefixes() bool {
+	return p.HasCapability(PeerCapabilitySourcePrefixes)
+}
+
+func (p *Peer) AddedWithSSOLogin() bool {
+	return p.UserID != ""
+}
+
+func (p *Peer) FQDN(dnsDomain string) string {
+	if dnsDomain == "" {
+		return ""
+	}
+	return p.DNSLabel + "." + dnsDomain
+}
+
+func (p *Peer) GetLastLogin() time.Time {
+	if p.LastLogin != nil {
+		return *p.LastLogin
+	}
+	return time.Time{}
+}
+
+// SessionExpiresAt mirrors peer.Peer.SessionExpiresAt.
+func (p *Peer) SessionExpiresAt(accountExpirationEnabled bool, expiresIn time.Duration) time.Time {
+	if !accountExpirationEnabled || !p.AddedWithSSOLogin() || !p.LoginExpirationEnabled {
+		return time.Time{}
+	}
+	last := p.GetLastLogin()
+	if last.IsZero() {
+		return time.Time{}
+	}
+	return last.Add(expiresIn).UTC()
+}
+
+func (p *Peer) LoginExpired(expiresIn time.Duration) (bool, time.Duration) {
+	if !p.AddedWithSSOLogin() || !p.LoginExpirationEnabled {
+		return false, 0
+	}
+	expiresAt := p.GetLastLogin().Add(expiresIn)
+	now := time.Now()
+	timeLeft := expiresAt.Sub(now)
+	return timeLeft <= 0, timeLeft
+}