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feat: display private IP ranges correctly in audit log (#139)

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This commit is contained in:
Chris Danis
2025-01-20 05:36:12 -05:00
committed by GitHub
parent 6e44b5e367
commit 72923bb86d
1 changed files with 30 additions and 3 deletions
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33
backend/internal/service/geolite_service.go
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@@ -21,6 +21,21 @@ import (
type GeoLiteService struct{}
var localhostIPNets = []*net.IPNet{
{IP: net.IPv4(127, 0, 0, 0), Mask: net.CIDRMask(8, 32)}, // 127.0.0.0/8
{IP: net.IPv6loopback, Mask: net.CIDRMask(128, 128)}, // ::1/128
}
var privateLanIPNets = []*net.IPNet{
{IP: net.IPv4(10, 0, 0, 0), Mask: net.CIDRMask(8, 32)}, // 10.0.0.0/8
{IP: net.IPv4(172, 16, 0, 0), Mask: net.CIDRMask(12, 32)}, // 172.16.0.0/12
{IP: net.IPv4(192, 168, 0, 0), Mask: net.CIDRMask(16, 32)}, // 192.168.0.0/16
}
var tailscaleIPNets = []*net.IPNet{
{IP: net.IPv4(100, 64, 0, 0), Mask: net.CIDRMask(10, 32)}, // 100.64.0.0/10
}
// NewGeoLiteService initializes a new GeoLiteService instance and starts a goroutine to update the GeoLite2 City database.
func NewGeoLiteService() *GeoLiteService {
service := &GeoLiteService{}
@@ -36,10 +51,22 @@ func NewGeoLiteService() *GeoLiteService {
// GetLocationByIP returns the country and city of the given IP address.
func (s *GeoLiteService) GetLocationByIP(ipAddress string) (country, city string, err error) {
// Check if IP is in Tailscale's CGNAT range (100.64.0.0/10)
// Check the IP address against known private IP ranges
if ip := net.ParseIP(ipAddress); ip != nil {
if ip.To4() != nil && ip.To4()[0] == 100 && ip.To4()[1] >= 64 && ip.To4()[1] <= 127 {
return "Internal Network", "Tailscale", nil
for _, ipNet := range tailscaleIPNets {
if ipNet.Contains(ip) {
return "Internal Network", "Tailscale", nil
}
}
for _, ipNet := range privateLanIPNets {
if ipNet.Contains(ip) {
return "Internal Network", "LAN/Docker/k8s", nil
}
}
for _, ipNet := range localhostIPNets {
if ipNet.Contains(ip) {
return "Internal Network", "localhost", nil
}
}
}