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main_test.go
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main_test.go
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// Copyright The OWASP Coraza contributors
// SPDX-License-Identifier: Apache-2.0
package main
import (
"bytes"
"encoding/binary"
"fmt"
"os"
"path/filepath"
"regexp"
"strconv"
"strings"
"testing"
"github.com/stretchr/testify/require"
"github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm/proxytest"
"github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm/types"
"github.com/corazawaf/coraza-proxy-wasm/internal/auditlog"
"github.com/corazawaf/coraza-proxy-wasm/wasmplugin"
)
func checkTXMetric(t *testing.T, host proxytest.HostEmulator, expectedCounter int) {
t.Helper()
value, err := host.GetCounterMetric("waf_filter.tx.total")
require.NoError(t, err)
require.Equal(t, uint64(expectedCounter), value)
}
var actionName = map[types.Action]string{
types.ActionPause: "pause",
types.ActionContinue: "continue",
}
func requireEqualAction(t *testing.T, expected types.Action, actual types.Action, msg string) {
require.Equal(t, expected, actual, msg, actionName[expected], actionName[actual])
}
func TestLifecycle(t *testing.T) {
reqProtocol := "HTTP/1.1"
reqHdrs := [][2]string{
{":path", "/hello?name=panda"},
{":method", "GET"},
{":authority", "localhost"},
{"User-Agent", "gotest"},
{"Content-Type", "application/x-www-form-urlencoded"},
{"Content-Length", "32"},
}
reqBody := []byte(`animal=bear&food=honey&name=pooh`)
respHdrs := [][2]string{
{":status", "200"},
{"Server", "gotest"},
{"Content-Length", "12"},
{"Content-Type", "text/plain"},
}
respBody := []byte(`Hello, yogi!`)
tests := []struct {
name string
inlineRules string
requestHdrsAction types.Action
requestBodyAction types.Action
responseHdrsAction types.Action
responded403 bool
responded413 bool
respondedNullBody bool
expectResponseRejectSinceFirstChunk bool
}{
{
name: "no rules",
inlineRules: ``,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "url accepted",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_URI \"@streq /admin\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "url denied",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_URI \"@streq /hello?name=panda\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionPause,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: true,
respondedNullBody: false,
},
{
name: "method accepted",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_METHOD \"@streq post\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "method denied",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_METHOD \"@streq get\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionPause,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: true,
respondedNullBody: false,
},
{
name: "protocol accepted",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_PROTOCOL \"@streq http/2.0\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
},
{
name: "protocol denied",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_PROTOCOL \"@streq http/1.1\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionPause,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: true,
},
{
name: "request header name accepted",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_HEADERS_NAMES \"@streq accept-encoding\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "request header name denied",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_HEADERS_NAMES \"@streq user-agent\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionPause,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: true,
respondedNullBody: false,
},
{
name: "server name denied",
inlineRules: `
SecRuleEngine On\nSecRule SERVER_NAME \"@streq localhost\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionPause,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: true,
respondedNullBody: false,
},
{
name: "request header value accepted",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_HEADERS:user-agent \"@streq rusttest\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "request header value denied",
inlineRules: `
SecRuleEngine On\nSecRule REQUEST_HEADERS:user-agent \"@streq gotest\" \"id:101,phase:1,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionPause,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: true,
respondedNullBody: false,
},
{
name: "request body accepted",
inlineRules: `
SecRuleEngine On\nSecRequestBodyAccess On\nSecRule REQUEST_BODY \"name=yogi\" \"id:101,phase:2,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "request body denied, end of body",
inlineRules: `
SecRuleEngine On\nSecRequestBodyAccess On\nSecRule REQUEST_BODY \"name=pooh\" \"id:101,phase:2,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionPause,
responseHdrsAction: types.ActionContinue,
responded403: true,
respondedNullBody: false,
},
{
name: "request body denied, start of body",
inlineRules: `
SecRuleEngine On\nSecRequestBodyAccess On\nSecRule REQUEST_BODY \"animal=bear\" \"id:101,phase:2,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionPause,
responseHdrsAction: types.ActionContinue,
responded403: true,
respondedNullBody: false,
},
{
name: "request body accepted, no request body access",
inlineRules: `
SecRuleEngine On\nSecRequestBodyAccess Off\nSecRule REQUEST_BODY \"animal=bear\" \"id:101,phase:2,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "request body accepted, payload above process partial",
inlineRules: `
SecRuleEngine On\nSecRequestBodyAccess On\nSecRequestBodyLimit 2\nSecRequestBodyLimitAction ProcessPartial\nSecRule REQUEST_BODY \"animal=bear\" \"id:101,phase:2,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "request body denied, above limits",
inlineRules: `
SecRuleEngine On\nSecRequestBodyAccess On\nSecRequestBodyLimit 2\nSecRequestBodyLimitAction Reject\nSecRule REQUEST_BODY \"name=yogi\" \"id:101,phase:2,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionPause,
responseHdrsAction: types.ActionContinue,
responded413: true,
respondedNullBody: false,
},
{
name: "status accepted",
inlineRules: `
SecRuleEngine On\nSecRule RESPONSE_STATUS \"500\" \"id:101,phase:3,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "status denied",
inlineRules: `
SecRuleEngine On\nSecRule RESPONSE_STATUS \"200\" \"id:101,phase:3,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionPause,
responded403: true,
respondedNullBody: false,
},
{
name: "status accepted rx",
inlineRules: `
SecRuleEngine On\nSecRule RESPONSE_STATUS \"@rx [^\\d]+\" \"id:101,phase:3,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "status denied rx",
inlineRules: `
SecRuleEngine On\nSecRule RESPONSE_STATUS \"@rx [\\d]+\" \"id:101,phase:3,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionPause,
responded403: true,
respondedNullBody: false,
},
{
name: "response header name accepted",
inlineRules: `
SecRuleEngine On\nSecRule RESPONSE_HEADERS_NAMES \"@streq transfer-encoding\" \"id:101,phase:3,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "response header name denied",
inlineRules: `
SecRuleEngine On\nSecRule RESPONSE_HEADERS_NAMES \"@streq server\" \"id:101,phase:3,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionPause,
responded403: true,
respondedNullBody: false,
},
{
name: "response header value accepted",
inlineRules: `
SecRuleEngine On\nSecRule RESPONSE_HEADERS:server \"@streq rusttest\" \"id:101,phase:3,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "response header value denied",
inlineRules: `
SecRuleEngine On\nSecRule RESPONSE_HEADERS:server \"@streq gotest\" \"id:101,phase:3,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionPause,
responded403: true,
respondedNullBody: false,
},
{
name: "response body accepted",
inlineRules: `
SecRuleEngine On\nSecResponseBodyAccess On\nSecResponseBodyMimeType text/plain\nSecRule RESPONSE_BODY \"@contains pooh\" \"id:101,phase:4,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "response body denied, end of body",
inlineRules: `
SecRuleEngine On\nSecResponseBodyAccess On\nSecResponseBodyMimeType text/plain\nSecRule RESPONSE_BODY \"@contains yogi\" \"id:101,phase:4,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: true,
},
{
name: "response body denied, start of body",
inlineRules: `
SecRuleEngine On\nSecResponseBodyAccess On\nSecResponseBodyMimeType text/plain\nSecRule RESPONSE_BODY \"@contains hello\" \"id:101,phase:4,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: true,
},
{
name: "response body accepted, no response body access",
inlineRules: `
SecRuleEngine On\nSecResponseBodyAccess Off\nSecResponseBodyMimeType text/plain\nSecRule RESPONSE_BODY \"@contains hello\" \"id:101,phase:4,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "response body accepted, payload above process partial",
inlineRules: `
SecRuleEngine On\nSecResponseBodyAccess On\nSecResponseBodyLimit 2\nSecResponseBodyLimitAction ProcessPartial\nSecResponseBodyMimeType text/plain\nSecRule RESPONSE_BODY \"@contains hello\" \"id:101,phase:4,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false,
respondedNullBody: false,
},
{
name: "response body denied, above limits",
inlineRules: `
SecRuleEngine On\nSecResponseBodyAccess On\nSecResponseBodyLimit 2\nSecResponseBodyLimitAction Reject\nSecResponseBodyMimeType text/plain\nSecRule RESPONSE_BODY \"@contains hello\" \"id:101,phase:4,t:lowercase,deny\"
`,
requestHdrsAction: types.ActionContinue,
requestBodyAction: types.ActionContinue,
responseHdrsAction: types.ActionContinue,
responded403: false, // proxy-wasm does not support it at phase 4
respondedNullBody: true,
expectResponseRejectSinceFirstChunk: true,
},
}
vmTest(t, func(t *testing.T, vm types.VMContext) {
for _, tc := range tests {
tt := tc
t.Run(tt.name, func(t *testing.T) {
conf := `{"directives_map": {"default": []}, "default_directives": "default"}`
if inlineRules := strings.TrimSpace(tt.inlineRules); inlineRules != "" {
conf = fmt.Sprintf(`{"directives_map": {"default": ["%s"]}, "default_directives": "default"}`, inlineRules)
}
opt := proxytest.
NewEmulatorOption().
WithVMContext(vm).
WithPluginConfiguration([]byte(conf))
host, reset := proxytest.NewHostEmulator(opt)
defer reset()
require.Equal(t, types.OnPluginStartStatusOK, host.StartPlugin())
id := host.InitializeHttpContext()
require.NoError(t, host.SetProperty([]string{"request", "protocol"}, []byte(reqProtocol)))
requestBodyAction := types.ActionPause
responseHdrsAction := types.ActionPause
requestHdrsAction := host.CallOnRequestHeaders(id, reqHdrs, false)
require.Equal(t, tt.requestHdrsAction, requestHdrsAction)
checkTXMetric(t, host, 1)
// Stream bodies in chunks of 5
if requestHdrsAction == types.ActionContinue {
totalBodysent := 0
requestBodyAccess := strings.Contains(tt.inlineRules, "SecRequestBodyAccess On")
requestBodyProcessPartial := strings.Contains(tt.inlineRules, "SecRequestBodyLimitAction ProcessPartial")
var requestBodyLimit int
matches := regexp.MustCompile(`SecRequestBodyLimit (\d+)`).FindStringSubmatch(tt.inlineRules)
if len(matches) > 1 {
var err error
requestBodyLimit, err = strconv.Atoi(matches[1])
require.NoError(t, err)
}
for i := 0; i < len(reqBody); i += 5 {
eos := i+5 >= len(reqBody)
var body []byte
if eos {
body = reqBody[i:]
} else {
body = reqBody[i : i+5]
}
totalBodysent += len(body)
requestBodyAction = host.CallOnRequestBody(id, body, eos)
switch {
case eos:
requireEqualAction(t, tt.requestBodyAction, requestBodyAction, "unexpected body action, want %q, have %q on end of stream")
// Reject: We expect pause in all cases with action Reject: being the limit reached or not
case requestBodyAccess && !requestBodyProcessPartial:
requireEqualAction(t, types.ActionPause, requestBodyAction, "unexpected request body action, want %q, have %q")
// ProcessPartial: we expect pause until the limit is reached
case requestBodyAccess && requestBodyProcessPartial && totalBodysent < requestBodyLimit:
requireEqualAction(t, types.ActionPause, requestBodyAction, "unexpected request body action, want %q, have %q")
// ProcessPartial: we expect tt.requestBodyAction when the limit is reached
case requestBodyAccess && requestBodyProcessPartial && totalBodysent >= requestBodyLimit:
requireEqualAction(t, tt.requestBodyAction, requestBodyAction, "unexpected request body action, want %q, have %q")
default:
requireEqualAction(t, types.ActionContinue, requestBodyAction, "unexpected request body action, want %q, have %q")
}
}
}
if requestBodyAction == types.ActionContinue {
responseHdrsAction = host.CallOnResponseHeaders(id, respHdrs, false)
require.Equal(t, tt.responseHdrsAction, responseHdrsAction)
}
if responseHdrsAction == types.ActionContinue {
responseBodyAccess := strings.Contains(tt.inlineRules, "SecResponseBodyAccess On")
responseBodyProcessPartial := strings.Contains(tt.inlineRules, "SecResponseBodyLimitAction ProcessPartial")
var responseBodyLimit int
matches := regexp.MustCompile(`SecResponseBodyLimit (\d+)`).FindStringSubmatch(tt.inlineRules)
if len(matches) > 1 {
var err error
responseBodyLimit, err = strconv.Atoi(matches[1])
require.NoError(t, err)
}
totalBodysent := 0
for i := 0; i < len(respBody); i += 5 {
eos := i+5 >= len(respBody)
var body []byte
if eos {
body = respBody[i:]
} else {
body = respBody[i : i+5]
}
totalBodysent += len(body)
responseBodyAction := host.CallOnResponseBody(id, body, eos)
switch {
// expectResponseRejectLimitActionSinceFirstChunk: writing the first chunk (len(respBody) bytes), it is expected to reach
// the ResponseBodyLimit with the Action set to Reject. When these conditions happen, ActionContinue will be returned,
// with the interruption enforced replacing the body with null bytes (checked with tt.respondedNullBody)
case eos, tt.expectResponseRejectSinceFirstChunk:
requireEqualAction(t, types.ActionContinue, responseBodyAction, "unexpected response body action, want %q, have %q on end of stream")
// Reject: We expect pause in all cases with action Reject: being the limit reached or not
// It would either be paused because we are callectin the body or because the limit was reached and we triggered the action
case responseBodyAccess && !responseBodyProcessPartial:
requireEqualAction(t, types.ActionPause, responseBodyAction, "unexpected request body action, want %q, have %q")
// ProcessPartial: we expect pause until the limit is reached
case responseBodyAccess && responseBodyProcessPartial && totalBodysent < responseBodyLimit:
requireEqualAction(t, types.ActionPause, responseBodyAction, "unexpected request body action, want %q, have %q")
default:
requireEqualAction(t, types.ActionContinue, responseBodyAction, "unexpected response body action, want %q, have %q")
}
}
}
// Call OnHttpStreamDone.
host.CompleteHttpContext(id)
pluginResp := host.GetSentLocalResponse(id)
switch {
case tt.responded403:
require.NotNil(t, pluginResp)
require.EqualValues(t, 403, pluginResp.StatusCode)
case tt.responded413:
require.NotNil(t, pluginResp)
require.EqualValues(t, 413, pluginResp.StatusCode)
default:
require.Nil(t, pluginResp)
}
if tt.respondedNullBody {
pluginBodyResp := host.GetCurrentResponseBody(id)
require.NotNil(t, pluginBodyResp)
require.EqualValues(t, bytes.Repeat([]byte("\x00"), len(pluginBodyResp)), pluginBodyResp)
}
})
}
})
}
func TestBadConfig(t *testing.T) {
tests := []struct {
name string
conf string
msg string
}{
{
name: "bad json",
conf: "{",
msg: `Failed to parse plugin configuration:`,
},
}
vmTest(t, func(t *testing.T, vm types.VMContext) {
for _, tc := range tests {
tt := tc
t.Run(tt.name, func(t *testing.T) {
opt := proxytest.
NewEmulatorOption().
WithVMContext(vm).
WithPluginConfiguration([]byte(tt.conf))
host, reset := proxytest.NewHostEmulator(opt)
defer reset()
require.Equal(t, types.OnPluginStartStatusFailed, host.StartPlugin())
logs := strings.Join(host.GetCriticalLogs(), "\n")
require.Contains(t, logs, tt.msg)
})
}
})
}
func TestBadRequest(t *testing.T) {
tests := []struct {
name string
reqHdrs [][2]string
msg string
}{
{
name: "missing path",
reqHdrs: [][2]string{
{":method", "GET"},
{":authority", "localhost"},
},
msg: "Failed to get :path",
},
{
name: "missing method",
reqHdrs: [][2]string{
{":path", "/hello"},
{":authority", "localhost"},
},
msg: "Failed to get :method",
},
{
name: "missing method and path",
reqHdrs: [][2]string{
{":authority", "localhost"},
},
msg: "Failed to get :method",
},
}
vmTest(t, func(t *testing.T, vm types.VMContext) {
for _, tc := range tests {
tt := tc
t.Run(tt.name, func(t *testing.T) {
conf := `{"directives_map": {"default": []}, "default_directives": "default"}`
opt := proxytest.
NewEmulatorOption().
WithVMContext(vm).
WithPluginConfiguration([]byte(conf))
host, reset := proxytest.NewHostEmulator(opt)
defer reset()
require.Equal(t, types.OnPluginStartStatusOK, host.StartPlugin())
id := host.InitializeHttpContext()
action := host.CallOnRequestHeaders(id, tt.reqHdrs, false)
require.Equal(t, types.ActionContinue, action)
logs := strings.Join(host.GetErrorLogs(), "\n")
require.Contains(t, logs, tt.msg)
})
}
})
}
func TestBadResponse(t *testing.T) {
tests := []struct {
name string
reqHdrs [][2]string
respHdrs [][2]string
msg string
}{
{
name: "missing path",
respHdrs: [][2]string{
{"content-length", "12"},
{":authority", "localhost"},
},
reqHdrs: [][2]string{
{":path", "/hello"},
{":method", "GET"},
{":authority", "localhost"},
},
msg: "Failed to get :status",
},
}
vmTest(t, func(t *testing.T, vm types.VMContext) {
for _, tc := range tests {
tt := tc
t.Run(tt.name, func(t *testing.T) {
conf := `{"directives_map": {"default": []}, "default_directives": "default"}`
opt := proxytest.
NewEmulatorOption().
WithVMContext(vm).
WithPluginConfiguration([]byte(conf))
host, reset := proxytest.NewHostEmulator(opt)
defer reset()
require.Equal(t, types.OnPluginStartStatusOK, host.StartPlugin())
id := host.InitializeHttpContext()
host.CallOnRequestHeaders(id, tt.reqHdrs, false)
action := host.CallOnResponseHeaders(id, tt.respHdrs, false)
require.Equal(t, types.ActionContinue, action)
logs := strings.Join(host.GetErrorLogs(), "\n")
require.Contains(t, logs, tt.msg)
})
}
})
}
func TestPerAuthorityDirectives(t *testing.T) {
tests := []struct {
name string
reqHdrs [][2]string
conf string
localResponseIsNil bool
localResponseStatusCode int
}{
{
name: "authority exist on per_authority_directives",
reqHdrs: [][2]string{
{":path", "/rs1"},
{":method", "GET"},
{":authority", "foo.example.com"},
},
conf: `{"directives_map": {"default": ["SecRuleEngine On","SecRule REQUEST_URI \"@streq /admin\" \"id:101,phase:1,t:lowercase,deny\""], "rs1": ["SecRuleEngine On","SecRule REQUEST_URI \"@streq /rs1\" \"id:101,phase:1,t:lowercase,deny\""]}, "default_directives": "default", "per_authority_directives":{"foo.example.com":"rs1"}}`,
localResponseStatusCode: 403,
},
{
name: "authority exist on per_authority_directives but calling allowed path",
reqHdrs: [][2]string{
{":path", "/admin"},
{":method", "GET"},
{":authority", "foo.example.com"},
},
conf: `{"directives_map": {"default": ["SecRuleEngine On","SecRule REQUEST_URI \"@streq /admin\" \"id:101,phase:1,t:lowercase,deny\""], "rs1": ["SecRuleEngine On","SecRule REQUEST_URI \"@streq /rs1\" \"id:101,phase:1,t:lowercase,deny\""]}, "default_directives": "default", "per_authority_directives":{"foo.example.com":"rs1"}}`,
localResponseIsNil: true,
},
{
name: "authority not exist on per_authority_directives",
reqHdrs: [][2]string{
{":path", "/admin"},
{":method", "GET"},
{":authority", "bar.example.com"},
},
conf: `{"directives_map": {"default": ["SecRuleEngine On","SecRule REQUEST_URI \"@streq /admin\" \"id:101,phase:1,t:lowercase,deny\""], "rs1": ["SecRuleEngine On","SecRule REQUEST_URI \"@streq /rs1\" \"id:101,phase:1,t:lowercase,deny\""]}, "default_directives": "default", "per_authority_directives":{"foo.example.com":"rs1"}}`,
localResponseStatusCode: 403,
},
{
name: "authority not exist on per_authority_directives and no default",
reqHdrs: [][2]string{
{":path", "/admin"},
{":method", "GET"},
{":authority", "bar.example.com"},
},
conf: `{"directives_map": {"rs1": ["SecRuleEngine On","SecRule REQUEST_URI \"@streq /rs1\" \"id:101,phase:1,t:lowercase,deny\""]}, "per_authority_directives":{"foo.example.com":"rs1"}}`,
localResponseIsNil: true,
},
{
name: "authority not exist on per_authority_directives but calling allowed value",
reqHdrs: [][2]string{
{":path", "/rs1"},
{":method", "GET"},
{":authority", "bar.example.com"},
},
conf: `{"directives_map": {"default": ["SecRuleEngine On","SecRule REQUEST_URI \"@streq /admin\" \"id:101,phase:1,t:lowercase,deny\""], "rs1": ["SecRuleEngine On","SecRule REQUEST_URI \"@streq /rs1\" \"id:101,phase:1,t:lowercase,deny\""]}, "default_directives": "default", "per_authority_directives":{"foo.example.com":"rs1"}}`,
localResponseIsNil: true,
},
}
vmTest(t, func(t *testing.T, vm types.VMContext) {
for _, tc := range tests {
tt := tc
t.Run(tt.name, func(t *testing.T) {
opt := proxytest.
NewEmulatorOption().
WithVMContext(vm).
WithPluginConfiguration([]byte(tt.conf))
host, reset := proxytest.NewHostEmulator(opt)
defer reset()
require.Equal(t, types.OnPluginStartStatusOK, host.StartPlugin())
id := host.InitializeHttpContext()
host.CallOnRequestHeaders(id, tt.reqHdrs, false)
host.CompleteHttpContext(id)
pluginResp := host.GetSentLocalResponse(id)
if tt.localResponseIsNil {
require.Nil(t, pluginResp)
return
}
require.NotNil(t, pluginResp)
require.EqualValues(t, tt.localResponseStatusCode, pluginResp.StatusCode)
})
}
})
}
func TestEmptyBody(t *testing.T) {
testCases := []struct {
title string
isRespBodyProcessable bool
}{
{
title: "Response body processable",
isRespBodyProcessable: true,
},
{
title: "Response body NOT processable",
isRespBodyProcessable: false,
},
}
for _, tc := range testCases {
t.Run(tc.title, func(t *testing.T) {
vmTest(t, func(t *testing.T, vm types.VMContext) {
opt := proxytest.
NewEmulatorOption().
WithVMContext(vm).
WithPluginConfiguration([]byte(`{"directives_map": {"default": [ "SecRequestBodyAccess On", "SecResponseBodyAccess On", "SecResponseBodyMimeType text/plain"]}, "default_directives": "default"}`))
host, reset := proxytest.NewHostEmulator(opt)
defer reset()
require.Equal(t, types.OnPluginStartStatusOK, host.StartPlugin())
id := host.InitializeHttpContext()
host.CallOnRequestHeaders(id, [][2]string{
{":path", "/hello"},
{":method", "GET"},
{":authority", "localhost"},
}, false)
action := host.CallOnRequestBody(id, []byte{}, false)
require.Equal(t, types.ActionPause, action)
action = host.CallOnRequestBody(id, []byte{}, true)
require.Equal(t, types.ActionContinue, action)
if tc.isRespBodyProcessable {
host.CallOnResponseHeaders(id, [][2]string{
{":status", "200"},
{"content-length", "0"},
{"content-type", "text/plain"}}, false)
action = host.CallOnResponseBody(id, []byte{}, false)
require.Equal(t, types.ActionPause, action)
action = host.CallOnResponseBody(id, []byte{}, true)
require.Equal(t, types.ActionContinue, action)
} else {
// If the ResponseBodyMimeType is not matched, we should just continue and not store the body
action = host.CallOnResponseBody(id, []byte{}, false)
require.Equal(t, types.ActionContinue, action)
action = host.CallOnResponseBody(id, []byte{}, true)
require.Equal(t, types.ActionContinue, action)
}
logs := strings.Join(host.GetCriticalLogs(), "\n")
require.Empty(t, logs)
})
})
}
}
func TestLogError(t *testing.T) {
reqHdrs := [][2]string{
{":path", "/hello"},
{":method", "GET"},
{":authority", "localhost"},
{"X-CRS-Test", "for the win!"},
}
tests := []struct {
severity int
logs func(host proxytest.HostEmulator) []string
}{
{
severity: 0,
logs: func(host proxytest.HostEmulator) []string {
return host.GetCriticalLogs()
},
},
{
severity: 1,
logs: func(host proxytest.HostEmulator) []string {
return host.GetCriticalLogs()
},
},
{
severity: 2,
logs: func(host proxytest.HostEmulator) []string {
return host.GetCriticalLogs()
},
},
{
severity: 3,
logs: func(host proxytest.HostEmulator) []string {
return host.GetErrorLogs()
},
},
{
severity: 4,
logs: func(host proxytest.HostEmulator) []string {
return host.GetWarnLogs()
},
},
{
severity: 5,
logs: func(host proxytest.HostEmulator) []string {
return host.GetInfoLogs()
},
},
{
severity: 6,
logs: func(host proxytest.HostEmulator) []string {
return host.GetInfoLogs()
},
},
{
severity: 7,
logs: func(host proxytest.HostEmulator) []string {
return host.GetDebugLogs()
},
},
}
vmTest(t, func(t *testing.T, vm types.VMContext) {
for _, tc := range tests {
tt := tc
t.Run(fmt.Sprintf("severity %d", tt.severity), func(t *testing.T) {
conf := fmt.Sprintf(`{"directives_map": {"default": ["SecRule REQUEST_HEADERS:X-CRS-Test \"@rx ^.*$\" \"id:999999,phase:1,log,severity:%d,msg:'%%{MATCHED_VAR}',pass,t:none\""]}, "default_directives": "default"}`, tt.severity)
opt := proxytest.
NewEmulatorOption().
WithVMContext(vm).
WithPluginConfiguration([]byte(strings.TrimSpace(conf)))
host, reset := proxytest.NewHostEmulator(opt)
defer reset()
require.Equal(t, types.OnPluginStartStatusOK, host.StartPlugin())
id := host.InitializeHttpContext()
action := host.CallOnRequestHeaders(id, reqHdrs, false)
require.Equal(t, types.ActionContinue, action)
logs := strings.Join(tt.logs(host), "\n")
require.Contains(t, logs, "for the win!")
})
}
})
}
func TestParseCRS(t *testing.T) {
vmTest(t, func(t *testing.T, vm types.VMContext) {
opt := proxytest.
NewEmulatorOption().
WithVMContext(vm).
WithPluginConfiguration([]byte(`{"directives_map": {"default": [ "Include @ftw-conf", "Include @recommended-conf", "Include @crs-setup-conf", "Include @owasp_crs/*.conf" ]}, "default_directives": "default"}`))
host, reset := proxytest.NewHostEmulator(opt)
defer reset()
require.Equal(t, types.OnPluginStartStatusOK, host.StartPlugin())
})
}
func TestBodyRulesWithoutBody(t *testing.T) {
reqHdrs := [][2]string{
{":path", "/hello"},
{":method", "GET"},
{":authority", "localhost"},
{"User-Agent", "gotest"},
{"Content-Type", "application/x-www-form-urlencoded"},
{"Content-Length", "32"},
}
respHdrs := [][2]string{
{":status", "200"},
{"Server", "gotest"},
{"Content-Length", "11"},
{"Content-Type", "text/plain"},
}
tests := []struct {
name string
rules string
responseHdrsAction types.Action
responded403 bool
disableWithMultiphase bool
}{
{
name: "url accepted in request body phase",
rules: `
SecRuleEngine On\nSecRule REQUEST_URI \"@streq /admin\" \"id:101,phase:2,t:lowercase,deny\"
`,
responseHdrsAction: types.ActionContinue,
responded403: false,
},
{
name: "url denied in request body phase",
rules: `
SecRuleEngine On\nSecRule REQUEST_URI \"@streq /hello\" \"id:101,phase:2,t:lowercase,deny\"
`,
responseHdrsAction: types.ActionPause,
responded403: true,