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net/tsaddr: extract IsTailscaleIPv4 from IsTailscaleIP (#14169)

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Extracts tsaddr.IsTailscaleIPv4 out of tsaddr.IsTailscaleIP.

This will allow for checking valid Tailscale assigned IPv4 addresses
without checking IPv6 addresses.

Updates #14168
Updates tailscale/corp#24620

Signed-off-by: James Scott <jim@tailscale.com>
This commit is contained in:
James Scott
2024-11-20 12:28:25 -08:00
committed by GitHub
parent ebeb5da202
commit ebaf33a80c
2 changed files with 76 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

68
net/tsaddr/tsaddr_test.go
View File

@ -222,3 +222,71 @@ func TestContainsExitRoute(t *testing.T) {
}
}
}
func TestIsTailscaleIPv4(t *testing.T) {
tests := []struct {
in netip.Addr
want bool
}{
{
in: netip.MustParseAddr("100.67.19.57"),
want: true,
},
{
in: netip.MustParseAddr("10.10.10.10"),
want: false,
},
{
in: netip.MustParseAddr("fd7a:115c:a1e0:3f2b:7a1d:4e88:9c2b:7f01"),
want: false,
},
{
in: netip.MustParseAddr("bc9d:0aa0:1f0a:69ab:eb5c:28e0:5456:a518"),
want: false,
},
{
in: netip.MustParseAddr("100.115.92.157"),
want: false,
},
}
for _, tt := range tests {
if got := IsTailscaleIPv4(tt.in); got != tt.want {
t.Errorf("IsTailscaleIPv4() = %v, want %v", got, tt.want)
}
}
}
func TestIsTailscaleIP(t *testing.T) {
tests := []struct {
in netip.Addr
want bool
}{
{
in: netip.MustParseAddr("100.67.19.57"),
want: true,
},
{
in: netip.MustParseAddr("10.10.10.10"),
want: false,
},
{
in: netip.MustParseAddr("fd7a:115c:a1e0:3f2b:7a1d:4e88:9c2b:7f01"),
want: true,
},
{
in: netip.MustParseAddr("bc9d:0aa0:1f0a:69ab:eb5c:28e0:5456:a518"),
want: false,
},
{
in: netip.MustParseAddr("100.115.92.157"),
want: false,
},
}
for _, tt := range tests {
if got := IsTailscaleIP(tt.in); got != tt.want {
t.Errorf("IsTailscaleIP() = %v, want %v", got, tt.want)
}
}
}