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package handlers
import (
"net/http"
"net/http/httptest"
"testing"
)
type headerTable struct {
key string // header key
val string // header val
expected string // expected result
}
func TestGetIP(t *testing.T) {
headers := []headerTable{
{xForwardedFor, "8.8.8.8", "8.8.8.8"}, // Single address
{xForwardedFor, "8.8.8.8, 8.8.4.4", "8.8.8.8"}, // Multiple
{xForwardedFor, "[2001:db8:cafe::17]:4711", "[2001:db8:cafe::17]:4711"}, // IPv6 address
{xForwardedFor, "", ""}, // None
{xRealIP, "8.8.8.8", "8.8.8.8"}, // Single address
{xRealIP, "8.8.8.8, 8.8.4.4", "8.8.8.8, 8.8.4.4"}, // Multiple
{xRealIP, "[2001:db8:cafe::17]:4711", "[2001:db8:cafe::17]:4711"}, // IPv6 address
{xRealIP, "", ""}, // None
{forwarded, `for="_gazonk"`, "_gazonk"}, // Hostname
{forwarded, `For="[2001:db8:cafe::17]:4711`, `[2001:db8:cafe::17]:4711`}, // IPv6 address
{forwarded, `for=192.0.2.60;proto=http;by=203.0.113.43`, `192.0.2.60`}, // Multiple params
{forwarded, `for=192.0.2.43, for=198.51.100.17`, "192.0.2.43"}, // Multiple params
{forwarded, `for="workstation.local",for=198.51.100.17`, "workstation.local"}, // Hostname
}
for _, v := range headers {
req := &http.Request{
Header: http.Header{
v.key: []string{v.val},
},
}
res := getIP(req)
if res != v.expected {
t.Fatalf("wrong header for %s: got %s want %s", v.key, res,
v.expected)
}
}
}
func TestGetScheme(t *testing.T) {
headers := []headerTable{
{xForwardedProto, "https", "https"},
{xForwardedProto, "http", "http"},
{xForwardedProto, "HTTP", "http"},
{xForwardedScheme, "https", "https"},
{xForwardedScheme, "http", "http"},
{xForwardedScheme, "HTTP", "http"},
{forwarded, `For="[2001:db8:cafe::17]:4711`, ""}, // No proto
{forwarded, `for=192.0.2.43, for=198.51.100.17;proto=https`, "https"}, // Multiple params before proto
{forwarded, `for=172.32.10.15; proto=https;by=127.0.0.1`, "https"}, // Space before proto
{forwarded, `for=192.0.2.60;proto=http;by=203.0.113.43`, "http"}, // Multiple params
}
for _, v := range headers {
req := &http.Request{
Header: http.Header{
v.key: []string{v.val},
},
}
res := getScheme(req)
if res != v.expected {
t.Fatalf("wrong header for %s: got %s want %s", v.key, res,
v.expected)
}
}
}
// Test the middleware end-to-end.
func TestProxyHeaders(t *testing.T) {
rr := httptest.NewRecorder()
r := newRequest(http.MethodGet, "/")
r.Header.Set(xForwardedFor, "8.8.8.8")
r.Header.Set(xForwardedProto, "https")
r.Header.Set(xForwardedHost, "google.com")
var (
addr string
proto string
host string
)
ProxyHeaders(http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
addr = r.RemoteAddr
proto = r.URL.Scheme
host = r.Host
})).ServeHTTP(rr, r)
if rr.Code != http.StatusOK {
t.Fatalf("bad status: got %d want %d", rr.Code, http.StatusOK)
}
if addr != r.Header.Get(xForwardedFor) {
t.Fatalf("wrong address: got %s want %s", addr,
r.Header.Get(xForwardedFor))
}
if proto != r.Header.Get(xForwardedProto) {
t.Fatalf("wrong address: got %s want %s", proto,
r.Header.Get(xForwardedProto))
}
if host != r.Header.Get(xForwardedHost) {
t.Fatalf("wrong address: got %s want %s", host,
r.Header.Get(xForwardedHost))
}
}
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