cli/config/credentials: ConvertToHostname: handle IP-addresses

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/config/credentials/file_store.go

@@ -1,6 +1,7 @@
 package credentials
 
 import (
+	"net"
 	"net/url"
 	"strings"
 
@@ -77,7 +78,7 @@ func ConvertToHostname(maybeURL string) string {
 			if u.Port() == "" {
 				return u.Hostname()
 			}
-			return u.Hostname() + ":" + u.Port()
+			return net.JoinHostPort(u.Hostname(), u.Port())
 		}
 	}
 	hostName, _, _ := strings.Cut(stripped, "/")

cli/config/credentials/file_store_test.go

@@ -137,6 +137,19 @@ func TestFileStoreErase(t *testing.T) {
 
 func TestConvertToHostname(t *testing.T) {
 	tests := []struct{ input, expected string }{
+		{
+			input:    "127.0.0.1",
+			expected: "127.0.0.1",
+		},
+		{
+			input:    "::1",
+			expected: "::1",
+		},
+		{
+			// FIXME(thaJeztah): this should be normalized to "::1" if there's no port (or vice-versa, as long as we're consistent)
+			input:    "[::1]",
+			expected: "[::1]",
+		},
 		{
 			input:    "example.com",
 			expected: "example.com",
@@ -168,10 +181,35 @@ func TestConvertToHostname(t *testing.T) {
 			expected: "example.com",
 		},
 		// should support non-standard port in registry url
+		{
+			input:    "127.0.0.1:6556",
+			expected: "127.0.0.1:6556",
+		},
+		{
+			// FIXME(thaJeztah): this should be normalized to "[::1]:6556"
+			input:    "::1:6556",
+			expected: "::1:6556",
+		},
+		{
+			input:    "[::1]:6556",
+			expected: "[::1]:6556",
+		},
 		{
 			input:    "example.com:6555",
 			expected: "example.com:6555",
 		},
+		{
+			input:    "https://127.0.0.1:6555/v2/",
+			expected: "127.0.0.1:6555",
+		},
+		{
+			input:    "https://::1:6555/v2/",
+			expected: "[::1]:6555",
+		},
+		{
+			input:    "https://[::1]:6555/v2/",
+			expected: "[::1]:6555",
+		},
 		{
 			input:    "http://example.com:6555",
 			expected: "example.com:6555",