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modsecurity_test.go
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modsecurity_test.go
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package traefik_modsecurity_plugin
import (
"bytes"
"context"
"github.com/stretchr/testify/assert"
"io"
"log"
"net/http"
"net/http/httptest"
"testing"
)
func TestModsecurity_ServeHTTP(t *testing.T) {
req, err := http.NewRequest(http.MethodGet, "http://proxy.com/test", bytes.NewBuffer([]byte("Request")))
if err != nil {
log.Fatal(err)
}
type response struct {
Body string
StatusCode int
}
serviceResponse := response{
StatusCode: 200,
Body: "Response from service",
}
tests := []struct {
name string
request *http.Request
wafResponse response
serviceResponse response
expectBody string
expectStatus int
jailEnabled bool
jailConfig *Config
}{
{
name: "Forward request when WAF found no threats",
request: req.Clone(req.Context()),
wafResponse: response{
StatusCode: 200,
Body: "Response from waf",
},
serviceResponse: serviceResponse,
expectBody: "Response from service",
expectStatus: 200,
jailEnabled: false,
},
{
name: "Intercepts request when WAF found threats",
request: req.Clone(req.Context()),
wafResponse: response{
StatusCode: 403,
Body: "Response from waf",
},
serviceResponse: serviceResponse,
expectBody: "Response from waf",
expectStatus: 403,
jailEnabled: false,
},
{
name: "Does not forward Websockets",
request: &http.Request{
Body: http.NoBody,
Header: http.Header{
"Upgrade": []string{"websocket"},
},
Method: http.MethodGet,
URL: req.URL,
},
wafResponse: response{
StatusCode: 200,
Body: "Response from waf",
},
serviceResponse: serviceResponse,
expectBody: "Response from service",
expectStatus: 200,
jailEnabled: false,
},
{
name: "Jail client after multiple bad requests",
request: req.Clone(req.Context()),
wafResponse: response{
StatusCode: 403,
Body: "Response from waf",
},
serviceResponse: serviceResponse,
expectBody: "Too Many Requests\n",
expectStatus: http.StatusTooManyRequests,
jailEnabled: true,
jailConfig: &Config{
JailEnabled: true,
BadRequestsThresholdCount: 3,
BadRequestsThresholdPeriodSecs: 10,
JailTimeDurationSecs: 10,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
modsecurityMockServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
resp := http.Response{
Body: io.NopCloser(bytes.NewReader([]byte(tt.wafResponse.Body))),
StatusCode: tt.wafResponse.StatusCode,
Header: http.Header{},
}
log.Printf("WAF Mock: status code: %d, body: %s", resp.StatusCode, tt.wafResponse.Body)
forwardResponse(&resp, w)
}))
defer modsecurityMockServer.Close()
httpServiceHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
resp := http.Response{
Body: io.NopCloser(bytes.NewReader([]byte(tt.serviceResponse.Body))),
StatusCode: tt.serviceResponse.StatusCode,
Header: http.Header{},
}
log.Printf("Service Handler: status code: %d, body: %s", resp.StatusCode, tt.serviceResponse.Body)
forwardResponse(&resp, w)
})
config := &Config{
TimeoutMillis: 2000,
ModSecurityUrl: modsecurityMockServer.URL,
JailEnabled: tt.jailEnabled,
BadRequestsThresholdCount: 25,
BadRequestsThresholdPeriodSecs: 600,
JailTimeDurationSecs: 600,
}
if tt.jailEnabled && tt.jailConfig != nil {
config = tt.jailConfig
config.ModSecurityUrl = modsecurityMockServer.URL
}
middleware, err := New(context.Background(), httpServiceHandler, config, "modsecurity-middleware")
if err != nil {
t.Fatalf("Failed to create middleware: %v", err)
}
rw := httptest.NewRecorder()
for i := 0; i < config.BadRequestsThresholdCount; i++ {
middleware.ServeHTTP(rw, tt.request.Clone(tt.request.Context()))
if tt.jailEnabled && i < config.BadRequestsThresholdCount-1 {
assert.Equal(t, tt.wafResponse.StatusCode, rw.Result().StatusCode)
}
}
rw = httptest.NewRecorder()
middleware.ServeHTTP(rw, tt.request.Clone(tt.request.Context()))
resp := rw.Result()
body, _ := io.ReadAll(resp.Body)
assert.Equal(t, tt.expectBody, string(body))
assert.Equal(t, tt.expectStatus, resp.StatusCode)
})
}
}