Merge pull request #32 from maxlerebourg/28-bypassing-crowdsec-for-local-ips

28 bypassing crowdsec for local ips

Makefile

@@ -28,20 +28,46 @@ run_local:
 run_behindproxy:
 	docker-compose -f exemples/behind-proxy/docker-compose.cloudflare.yml up -d --remove-orphans
 
+run_cacheredis:
+	docker-compose -f exemples/redis-cache/docker-compose.redis.yml up -d --remove-orphans
+
+run_trustedips:
+	docker-compose -f exemples/trusted-ips/docker-compose.trusted.yml up -d --remove-orphans
+
 run:
 	docker-compose -f docker-compose.yml up -d --remove-orphans
 
-restart_docker_dev:
+restart_dev:
 	docker-compose -f docker-compose.dev.yml restart
 
-restart_docker_local:
+restart_local:
 	docker-compose -f docker-compose.local.yml restart
 
-restart_docker:
+restart:
 	docker-compose -f docker-compose.yml restart
 
+restart_behindproxy:
+	docker-compose -f exemples/behind-proxy/docker-compose.cloudflare.yml restart
+
+restart_cacheredis:
+	docker-compose -f exemples/redis-cache/docker-compose.redis.yml restart
+
+restart_trustedips:
+	docker-compose -f exemples/trusted-ips/docker-compose.trusted.yml restart
+
+show_logs:
+	docker-compose -f docker-compose.yml restart
+
+show_local_logs:
+	docker-compose -f docker-compose.local.yml logs -f
+
+show_dev_logs:
+	docker-compose -f docker-compose.dev.yml logs -f
+
 clean_all_docker:
 	docker-compose -f exemples/behind-proxy/docker-compose.cloudflare.yml down --remove-orphans
+	docker-compose -f exemples/redis-cache/docker-compose.redis.yml down --remove-orphans
+	docker-compose -f exemples/trusted-ips/docker-compose.trusted.yml down --remove-orphans
 	docker-compose -f docker-compose.local.yml down --remove-orphans
 	docker-compose -f docker-compose.yml down --remove-orphans
 

README.md

@@ -26,6 +26,9 @@ There are 3 operating modes (CrowdsecMode) for this plugin:
 
 The recommanded mode for performance is the streaming mode, decisions are updated every 60 sec by default and that's the only communication between traefik and crowdsec. Every requests that happens hits the cache for quick decisions.
 
+The cache can be local to the Traefik instance using the filesystem or use of a separated redis instance.  
+The redis instance is currently in beta and support Redis 7.0.X version
+
 ## Usage
 
 To get started, use the `docker-compose.yml` file.
@@ -36,19 +39,19 @@ make run
 ```
 
 ### Note
-Each middleware in traefik has it's own data and is instanciated by service.
-This means if there are 10 services protected by the bouncer in streaming alone or live mode, the cache will be duplicated to all 10 services.
-This is because traefik does not allow plugins to store data locally that can be consummed.
 
-The synchronisation with the crowdsec service will happen also 10 times in the period selected.
-It should be taken into account when fixing this period so each middleware has time to sync data from crowdsec.
+**/!\ Since Release 1.10, cache is no longer duplicated but shared by all services**
+*This lowers the overhead of the cache in memory and the numbers of cache to fetch it from crowdsec in situation with many services*
 
-At each start of synchronisation, the middleware will wait a random number of seconds to avoid simultaneous calls to crowdsec.
 
 ### Variables
 - Enabled
   - bool
   - enable the plugin
+  - default: false
+- LogLevel
+  - string
+  - default: `INFO`, expected value are: `INFO`, `DEBUG`
 - CrowdsecMode
   - string
   - default: `live`, expected value are: `none`, `live`, `stream`
@@ -58,7 +61,7 @@ At each start of synchronisation, the middleware will wait a random number of se
 - CrowdsecLapiHost
   - string
   - default: "crowdsec:8080"
-  - Crowdsec LAPI available on which host.
+  - Crowdsec LAPI available on which host and port.
 - CrowdsecLapiKey
   - string
   - Crowdsec LAPI generated key for the bouncer : **must be unique by service**. 
@@ -74,6 +77,22 @@ At each start of synchronisation, the middleware will wait a random number of se
   - []string
   - default: []
   - List of IPs of trusted Proxies that are in front of traefik (ex: Cloudflare)
+- ForwardedHeadersCustomName
+  - string
+  - default: "X-Forwarded-For"
+  - Name of the header where the real IP of the client should be retrieved
+- RedisCacheEnabled
+  - bool
+  - default: false
+  - enable redis cache instead of filesystem cache
+- RedisCacheHost
+  - string 
+  - default: "redis:6379"
+  - hostname and port for the redis service
+- ClientTrustedIPs
+  - string 
+  - default: []
+  - List of client IPs we trust, they will bypass any more check to the bouncer or cache (usefull for LAN or VPN IP)
 
 ### Configuration
 
@@ -116,13 +135,18 @@ http:
           enabled: false
           updateIntervalSeconds: 60
           defaultDecisionSeconds: 60
-          crowdsecMode: stream
+          crowdsecMode: live
           crowdsecLapiKey: privateKey
           crowdsecLapiHost: crowdsec:8080
           crowdsecLapiScheme: http
           forwardedHeadersTrustedIPs: 
             - 10.0.10.23/32
             - 10.0.20.0/24
+          clientTrustedIPs: 
+            - 192.168.1.0/24
+          forwardedHeadersCustomName: X-Custom-Header
+          redisCacheEnabled: false
+          redisCacheHost: "redis:6379"
 ```
 These are the default values of the plugin except for LapiKey.
 
@@ -159,7 +183,7 @@ docker-compose up -d
 
 ```bash
 docker-compose up -d crowdsec
-docker exec crowdsec cscli decisions add --ip 10.0.0.10 # this will be effective 4h
+docker exec crowdsec cscli decisions add --ip 10.0.0.10 -d 10m # this will be effective 10min
 docker exec crowdsec cscli decisions remove --ip 10.0.0.10
 ```
 
@@ -205,6 +229,7 @@ You need to configure your Traefik to trust Forwarded headers by your front prox
 In the exemple we use another instance of traefik with the container named cloudflare to simulate a front proxy
 
 The "internal" Traefik instance is configured to trust the cloudflare forward headers
+This helps Traefik choose the right IP of the client: see https://doc.traefik.io/traefik/routing/entrypoints/#forwarded-headers
 ```yaml
   - "--entrypoints.web.forwardedheaders.trustedips=172.21.0.5"
 ```
@@ -214,11 +239,62 @@ We configure the middleware to trust as well the IP:
     - "traefik.http.middlewares.crowdsec1.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
 ```
 
-To run the environnement run:
+To play the demo environnement run:
 ```bash
-make run_behind_proxy
+make run_behindproxy
 ```
 
+2. With Redis as an external shared cache
+
+The plugin must be configured to connect to a redis instance
+```yaml
+  redisCacheHost: "redis:6379"
+```
+Here **redis** is the hostname of a container located in the same network as Traefik and **6379** the default port of redis
+
+To play the demo environnement run:
+```bash
+make run_cacheredis
+```
+
+3. Using Trusted IP (ex: LAN OR VPN) that won't get filtered by crowdsec
+
+You need to configure your Traefik to trust Forwarded headers by your front proxy
+In the exemple we use a whoami container protected by crowdsec, and we ban or IP before allowing using TrustedIPs
+
+If you are using another proxy in front, you need to add it's IP in the trusted IP for the forwarded headers.
+This helps Traefik choose the right IP of the client: see https://doc.traefik.io/traefik/routing/entrypoints/#forwarded-headers
+The "internal" Traefik instance is configured to trust the forward headers
+```yaml
+  - "--entrypoints.web.forwardedheaders.trustedips=172.21.0.5"
+```
+
+We configure the middleware to trust as well the IP of the intermediate proxy if needed:
+```yaml
+    - "traefik.http.middlewares.crowdsec.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
+```
+
+Add your IP to the ban list
+```bash
+docker exec crowdsec cscli decisions add --ip 10.0.10.30 -d 10m
+```
+You should get a 403 on http://localhost/foo
+
+> Replace *10.0.10.30* by your IP
+
+Add the IPs that will not be filtered by the plugin
+```yaml
+    - "traefik.http.middlewares.crowdsec.plugin.bouncer.clientTrustedips=10.0.10.30/32"
+```
+
+> Replace *10.0.10.30/32* by your IP or IP range, so it's not getting checked against ban cache of crowdsec
+
+You should get a 200 on http://localhost/foo even if you are on the ban cache
+
+To play the demo environnement run:
+```bash
+make run_trustedips
+```
 
 ### About
 

bouncer.go

@@ -7,16 +7,15 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
-	"log"
-	"math/rand"
-	"net"
 	"net/http"
 	"net/url"
 	"text/template"
 	"time"
 
-	ttl_map "github.com/leprosus/golang-ttl-map"
-	ip "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/ip"
+	cache "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/cache"
+	ip "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/ip"
+	logger "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger"
+	simpleredis "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/redis"
 )
 
 const (
@@ -26,26 +25,36 @@ const (
 	crowdsecLapiHeader      = "X-Api-Key"
 	crowdsecLapiRoute       = "v1/decisions"
 	crowdsecLapiStreamRoute = "v1/decisions/stream"
-	cacheBannedValue        = "t"
-	cacheNoBannedValue      = "f"
+	cacheTimeoutKey         = "updated"
+)
+
+var (
+	crowdsecStreamHealthy = false
+	ticker                chan bool
 )
 
 // Config the plugin configuration.
 type Config struct {
 	Enabled                    bool     `json:"enabled,omitempty"`
+	LogLevel                   string   `json:"logLevel,omitempty"`
 	CrowdsecMode               string   `json:"crowdsecMode,omitempty"`
 	CrowdsecLapiScheme         string   `json:"crowdsecLapiScheme,omitempty"`
 	CrowdsecLapiHost           string   `json:"crowdsecLapiHost,omitempty"`
 	CrowdsecLapiKey            string   `json:"crowdsecLapiKey,omitempty"`
 	UpdateIntervalSeconds      int64    `json:"updateIntervalSeconds,omitempty"`
 	DefaultDecisionSeconds     int64    `json:"defaultDecisionSeconds,omitempty"`
-	ForwardedHeadersTrustedIPs []string `json:"forwardedheaderstrustedips,omitempty"`
+	ForwardedHeadersCustomName string   `json:"forwardedheaderscustomheader,omitempty"`
+	ForwardedHeadersTrustedIPs []string `json:"forwardedHeadersTrustedIps,omitempty"`
+	ClientTrustedIPs           []string `json:"clientTrustedIps,omitempty"`
+	RedisCacheEnabled          bool     `json:"redisCacheEnabled,omitempty"`
+	RedisCacheHost             string   `json:"redisCacheHost,omitempty"`
 }
 
 // CreateConfig creates the default plugin configuration.
 func CreateConfig() *Config {
 	return &Config{
 		Enabled:                    false,
+		LogLevel:                   "INFO",
 		CrowdsecMode:               liveMode,
 		CrowdsecLapiScheme:         "http",
 		CrowdsecLapiHost:           "crowdsec:8080",
@@ -53,36 +62,43 @@ func CreateConfig() *Config {
 		UpdateIntervalSeconds:      60,
 		DefaultDecisionSeconds:     60,
 		ForwardedHeadersTrustedIPs: []string{},
+		ClientTrustedIPs:           []string{},
+		ForwardedHeadersCustomName: "X-Forwarded-For",
+		RedisCacheEnabled:          false,
+		RedisCacheHost:             "redis:6379",
 	}
 }
 
-// Bouncer a Bouncer plugin.
+// Bouncer a Bouncer struct.
 type Bouncer struct {
 	next     http.Handler
 	name     string
 	template *template.Template
 
 	enabled                bool
-	crowdsecStreamHealthy  bool
 	crowdsecScheme         string
 	crowdsecHost           string
 	crowdsecKey            string
 	crowdsecMode           string
 	updateInterval         int64
 	defaultDecisionTimeout int64
-	poolStrategy           *ip.PoolStrategy
+	customHeader           string
+	serverPoolStrategy     *ip.PoolStrategy
+	clientPoolStrategy     *ip.PoolStrategy
 	client                 *http.Client
-	cache                  *ttl_map.Heap
 }
 
 // New creates the crowdsec bouncer plugin.
 func New(ctx context.Context, next http.Handler, config *Config, name string) (http.Handler, error) {
+	logger.Init(config.LogLevel)
 	err := validateParams(config)
 	if err != nil {
+		logger.Info(err.Error())
 		return nil, err
 	}
 
-	checker, _ := ip.NewChecker(config.ForwardedHeadersTrustedIPs)
+	serverChecker, _ := ip.NewChecker(config.ForwardedHeadersTrustedIPs)
+	clientChecker, _ := ip.NewChecker(config.ClientTrustedIPs)
 
 	bouncer := &Bouncer{
 		next:     next,
@@ -90,15 +106,18 @@ func New(ctx context.Context, next http.Handler, config *Config, name string) (h
 		template: template.New("CrowdsecBouncer").Delims("[[", "]]"),
 
 		enabled:                config.Enabled,
-		crowdsecStreamHealthy:  false,
 		crowdsecMode:           config.CrowdsecMode,
 		crowdsecScheme:         config.CrowdsecLapiScheme,
 		crowdsecHost:           config.CrowdsecLapiHost,
 		crowdsecKey:            config.CrowdsecLapiKey,
 		updateInterval:         config.UpdateIntervalSeconds,
+		customHeader:           config.ForwardedHeadersCustomName,
 		defaultDecisionTimeout: config.DefaultDecisionSeconds,
-		poolStrategy: &ip.PoolStrategy{
-			Checker: checker,
+		serverPoolStrategy: &ip.PoolStrategy{
+			Checker: serverChecker,
+		},
+		clientPoolStrategy: &ip.PoolStrategy{
+			Checker: clientChecker,
 		},
 		client: &http.Client{
 			Transport: &http.Transport{
@@ -107,21 +126,17 @@ func New(ctx context.Context, next http.Handler, config *Config, name string) (h
 			},
 			Timeout: 5 * time.Second,
 		},
-		cache: ttl_map.New(),
 	}
-	if config.CrowdsecMode == streamMode {
-		go func() {
-			rand.Seed(time.Now().UnixNano())
-			timeout := rand.Int63n(30)
-			logger(fmt.Sprintf("Wait: %v", timeout))
-			time.Sleep(time.Duration(timeout) * time.Second)
-			go handleStreamCache(bouncer)
-			ticker := time.NewTicker(time.Duration(config.UpdateIntervalSeconds) * time.Second)
-			for range ticker.C {
+	if config.RedisCacheEnabled {
+		cache.InitRedisClient(config.RedisCacheHost)
+	}
+	if config.CrowdsecMode == streamMode && ticker == nil {
+		ticker = startTicker(config, func() {
+			handleStreamCache(bouncer)
+		})
 		go handleStreamCache(bouncer)
 	}
-		}()
-	}
+
 	return bouncer, nil
 }
 
@@ -131,16 +146,36 @@ func (bouncer *Bouncer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 		bouncer.next.ServeHTTP(rw, req)
 		return
 	}
-
-	remoteHost, err := getRemoteIP(bouncer, req)
+	// Here we check for the trusted IPs in the customHeader
+	remoteHost, err := ip.GetRemoteIP(req, bouncer.serverPoolStrategy, bouncer.customHeader)
 	if err != nil {
+		logger.Info(err.Error())
 		bouncer.next.ServeHTTP(rw, req)
 		return
 	}
 
+	trusted, err := bouncer.clientPoolStrategy.Checker.Contains(remoteHost)
+	if err != nil {
+		logger.Info(err.Error())
+		return
+	}
+	// if our IP is in the trusted list we bypass the next checks
+	logger.Debug(fmt.Sprintf("ServeHTTP ip:%v isTrusted:%v", remoteHost, trusted))
+	if trusted {
+		bouncer.next.ServeHTTP(rw, req)
+		return
+	}
+
+	healthy := crowdsecStreamHealthy
 	if bouncer.crowdsecMode != noneMode {
-		isBanned, err := getDecision(bouncer.cache, remoteHost)
-		if err == nil {
+		isBanned, err := cache.GetDecision(remoteHost)
+		if err != nil {
+			logger.Debug(err.Error())
+			if err.Error() == simpleredis.RedisUnreachable {
+				healthy = false
+			}
+		} else {
+			logger.Debug(fmt.Sprintf("ServeHTTP cache:hit isBanned:%v", isBanned))
 			if isBanned {
 				rw.WriteHeader(http.StatusForbidden)
 			} else {
@@ -152,7 +187,7 @@ func (bouncer *Bouncer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 
 	// Right here if we cannot join the stream we forbid the request to go on.
 	if bouncer.crowdsecMode == streamMode {
-		if bouncer.crowdsecStreamHealthy {
+		if healthy {
 			bouncer.next.ServeHTTP(rw, req)
 		} else {
 			rw.WriteHeader(http.StatusForbidden)
@@ -183,10 +218,6 @@ type Stream struct {
 	New     []Decision `json:"new"`
 }
 
-func logger(str string) {
-	log.Printf("Crowdsec Bouncer Traefik Plugin - %s", str)
-}
-
 func contains(source []string, target string) bool {
 	for _, item := range source {
 		if item == target {
@@ -196,42 +227,21 @@ func contains(source []string, target string) bool {
 	return false
 }
 
-// It returns the first IP that is not in the pool, or the empty string otherwise.
-func getRemoteIP(bouncer *Bouncer, req *http.Request) (string, error) {
-	remoteIP := bouncer.poolStrategy.GetIP(req)
-	if len(remoteIP) != 0 {
-		return remoteIP, nil
-	}
-	remoteIP, _, err := net.SplitHostPort(req.RemoteAddr)
-	if err != nil {
-		logger(fmt.Sprintf("failed to extract ip from remote address: %v", err))
-		return "", err
-	}
-	return remoteIP, nil
-}
-
-// Get Decision check in the cache if the IP has the banned / not banned value.
-// Otherwise return with an error to add the IP in cache if we are on.
-func getDecision(cache *ttl_map.Heap, clientIP string) (bool, error) {
-	banned, isCached := cache.Get(clientIP)
-	bannedString, isValid := banned.(string)
-	if isCached && isValid && len(bannedString) > 0 {
-		return bannedString == cacheBannedValue, nil
-	}
-	return false, fmt.Errorf("no cache data")
-}
-
-func setDecision(cache *ttl_map.Heap, clientIP string, isBanned bool, duration int64) {
-	if isBanned {
-		logger(fmt.Sprintf("%v banned", clientIP))
-		cache.Set(clientIP, cacheBannedValue, duration)
-	} else {
-		cache.Set(clientIP, cacheNoBannedValue, duration)
+func startTicker(config *Config, work func()) chan bool {
+	ticker := time.NewTicker(time.Duration(config.UpdateIntervalSeconds) * time.Second)
+	stop := make(chan bool, 1)
+	go func() {
+		defer logger.Debug("ticker:stopped")
+		for {
+			select {
+			case <-ticker.C:
+				go work()
+			case <-stop:
+				return
 			}
 		}
-
-func deleteDecision(cache *ttl_map.Heap, clientIP string) {
-	cache.Del(clientIP)
+	}()
+	return stop
 }
 
 // We are now in none or live mode.
@@ -242,26 +252,31 @@ func handleNoStreamCache(bouncer *Bouncer, rw http.ResponseWriter, req *http.Req
 		Path:     crowdsecLapiRoute,
 		RawQuery: fmt.Sprintf("ip=%v&banned=true", remoteHost),
 	}
-	body := crowdsecQuery(bouncer, routeURL.String())
+	body, err := crowdsecQuery(bouncer, routeURL.String())
+	if err != nil {
+		logger.Info(err.Error())
+		rw.WriteHeader(http.StatusForbidden)
+		return
+	}
 
 	if bytes.Equal(body, []byte("null")) {
 		if bouncer.crowdsecMode == liveMode {
-			setDecision(bouncer.cache, remoteHost, false, bouncer.defaultDecisionTimeout)
+			cache.SetDecision(remoteHost, false, bouncer.defaultDecisionTimeout)
 		}
 		bouncer.next.ServeHTTP(rw, req)
 		return
 	}
 
 	var decisions []Decision
-	err := json.Unmarshal(body, &decisions)
+	err = json.Unmarshal(body, &decisions)
 	if err != nil {
-		logger(fmt.Sprintf("failed to parse body: %s", err))
+		logger.Info(fmt.Sprintf("failed to parse body: %s", err))
 		rw.WriteHeader(http.StatusForbidden)
 		return
 	}
 	if len(decisions) == 0 {
 		if bouncer.crowdsecMode == liveMode {
-			setDecision(bouncer.cache, remoteHost, false, bouncer.defaultDecisionTimeout)
+			cache.SetDecision(remoteHost, false, bouncer.defaultDecisionTimeout)
 		}
 		bouncer.next.ServeHTTP(rw, req)
 		return
@@ -269,70 +284,78 @@ func handleNoStreamCache(bouncer *Bouncer, rw http.ResponseWriter, req *http.Req
 	rw.WriteHeader(http.StatusForbidden)
 	duration, err := time.ParseDuration(decisions[0].Duration)
 	if err != nil {
-		logger(fmt.Sprintf("failed to parse duration: %s", err))
+		logger.Info(fmt.Sprintf("failed to parse duration: %s", err))
 		return
 	}
 	if bouncer.crowdsecMode == liveMode {
-		setDecision(bouncer.cache, remoteHost, true, int64(duration.Seconds()))
+		cache.SetDecision(remoteHost, true, int64(duration.Seconds()))
 	}
 }
 
 func handleStreamCache(bouncer *Bouncer) {
 	// TODO clean properly on exit.
+	// Instead of blocking the goroutine interval for all the secondary node,
+	// if the master service is shut down, other goroutine can take the lead
+	// because updated routine information is in the cache
+	logger.Debug("handleStreamCache")
+	_, err := cache.GetDecision(cacheTimeoutKey)
+	if err == nil {
+		return
+	}
+	cache.SetDecision(cacheTimeoutKey, false, bouncer.updateInterval-1)
 	streamRouteURL := url.URL{
 		Scheme:   bouncer.crowdsecScheme,
 		Host:     bouncer.crowdsecHost,
 		Path:     crowdsecLapiStreamRoute,
-		RawQuery: fmt.Sprintf("startup=%t", !bouncer.crowdsecStreamHealthy),
+		RawQuery: fmt.Sprintf("startup=%t", !crowdsecStreamHealthy),
 	}
-	body := crowdsecQuery(bouncer, streamRouteURL.String())
-	var stream Stream
-	err := json.Unmarshal(body, &stream)
+	body, err := crowdsecQuery(bouncer, streamRouteURL.String())
 	if err != nil {
-		logger(fmt.Sprintf("error while parsing body: %s", err))
-		bouncer.crowdsecStreamHealthy = false
+		logger.Info(err.Error())
+		crowdsecStreamHealthy = false
+		return
+	}
+	var stream Stream
+	err = json.Unmarshal(body, &stream)
+	if err != nil {
+		logger.Info(fmt.Sprintf("error while parsing body: %s", err))
+		crowdsecStreamHealthy = false
 		return
 	}
 	for _, decision := range stream.New {
 		duration, err := time.ParseDuration(decision.Duration)
 		if err == nil {
-			setDecision(bouncer.cache, decision.Value, true, int64(duration.Seconds()))
+			cache.SetDecision(decision.Value, true, int64(duration.Seconds()))
 		}
 	}
 	for _, decision := range stream.Deleted {
-		deleteDecision(bouncer.cache, decision.Value)
+		cache.DeleteDecision(decision.Value)
 	}
-	bouncer.crowdsecStreamHealthy = true
+	crowdsecStreamHealthy = true
 }
 
-func crowdsecQuery(bouncer *Bouncer, stringURL string) []byte {
+func crowdsecQuery(bouncer *Bouncer, stringURL string) ([]byte, error) {
 	var req *http.Request
 	req, _ = http.NewRequest(http.MethodGet, stringURL, nil)
 	req.Header.Add(crowdsecLapiHeader, bouncer.crowdsecKey)
 	res, err := bouncer.client.Do(req)
 	if err != nil {
-		logger(fmt.Sprintf("error while fetching %v: %s", stringURL, err))
-		bouncer.crowdsecStreamHealthy = false
-		return nil
+		return nil, fmt.Errorf("error while fetching %v: %s", stringURL, err)
 	}
 	if res.StatusCode != http.StatusOK {
-		logger(fmt.Sprintf("error while fetching %v, status code: %d", stringURL, res.StatusCode))
-		bouncer.crowdsecStreamHealthy = false
-		return nil
+		return nil, fmt.Errorf("error while fetching %v, status code: %d", stringURL, res.StatusCode)
 	}
 	defer func(body io.ReadCloser) {
 		err = body.Close()
 		if err != nil {
-			logger(fmt.Sprintf("failed to close body reader: %s", err))
+			logger.Info(fmt.Sprintf("failed to close body reader: %s", err))
 		}
 	}(res.Body)
 	body, err := ioutil.ReadAll(res.Body)
 	if err != nil {
-		logger(fmt.Sprintf("error while reading body: %s", err))
-		bouncer.crowdsecStreamHealthy = false
-		return nil
+		return nil, fmt.Errorf("error while reading body: %s", err)
 	}
-	return body
+	return body, nil
 }
 
 func validateParams(config *Config) error {
@@ -373,10 +396,18 @@ func validateParams(config *Config) error {
 	if len(config.ForwardedHeadersTrustedIPs) > 0 {
 		_, err = ip.NewChecker(config.ForwardedHeadersTrustedIPs)
 		if err != nil {
-			return fmt.Errorf("ForwardedHeadersTrustedIPs must be a list of IP/CIDR :%v", err)
+			return fmt.Errorf("ForwardedHeadersTrustedIPs must be a list of IP/CIDR :%w", err)
 		}
 	} else {
-		logger("No IP provided for ForwardedHeadersTrustedIPs")
+		logger.Debug("No IP provided for ForwardedHeadersTrustedIPs")
+	}
+	if len(config.ClientTrustedIPs) > 0 {
+		_, err = ip.NewChecker(config.ClientTrustedIPs)
+		if err != nil {
+			return fmt.Errorf("TrustedIPs must be a list of IP/CIDR :%w", err)
+		}
+	} else {
+		logger.Debug("No IP provided for TrustedIPs")
 	}
 
 	return nil

docker-compose.local.yml

@@ -2,10 +2,11 @@ version: "3.8"
 
 services:
   traefik:
-    image: "traefik:v2.8.8"
+    image: "traefik:v2.9.4"
     container_name: "traefik"
+    restart: unless-stopped
     command:
-      # - "--log.level=DEBUG"
+      - "--log.level=DEBUG"
       - "--accesslog"
       - "--accesslog.filepath=/var/log/traefik/access.log"
       - "--api.insecure=true"
@@ -24,34 +25,36 @@ services:
     depends_on:
       - crowdsec
 
-  whoami1:
+  whoami-foo:
     image: traefik/whoami
-    container_name: "simple-service1"
+    container_name: "simple-service-foo"
+    restart: unless-stopped
     labels:
       - "traefik.enable=true"
-      - "traefik.http.routers.router1.rule=Host(`localhost`) && Path(`/foo`)"
-      - "traefik.http.routers.router1.entrypoints=web"
-      - "traefik.http.routers.router1.middlewares=crowdsec1@docker" 
-      - "traefik.http.services.service1.loadbalancer.server.port=80"
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.enabled=true"
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5"
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.forwardedheaderstrustedips=172.26.0.1"
+      - "traefik.http.routers.router-foo.rule=Path(`/foo`)"
+      - "traefik.http.routers.router-foo.entrypoints=web"
+      - "traefik.http.routers.router-foo.middlewares=crowdsec-foo@docker" 
+      - "traefik.http.services.service-foo.loadbalancer.server.port=80"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.enabled=true"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5"
 
   whoami2:
     image: traefik/whoami
-    container_name: "simple-service2"
+    container_name: "simple-service-bar"
+    restart: unless-stopped
     labels:
       - "traefik.enable=true"
-      - "traefik.http.routers.router2.rule=Host(`localhost`) && Path(`/bar`)"
-      - "traefik.http.routers.router2.entrypoints=web"
-      - "traefik.http.routers.router2.middlewares=crowdsec2@docker"
-      - "traefik.http.services.service2.loadbalancer.server.port=80"
-      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.enabled=true"
-      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.crowdseclapikey=44c36dac5c4140af9f06f397508e82c7"
+      - "traefik.http.routers.router-bar.rule=Path(`/bar`)"
+      - "traefik.http.routers.router-bar.entrypoints=web"
+      - "traefik.http.routers.router-bar.middlewares=crowdsec-bar@docker"
+      - "traefik.http.services.service-bar.loadbalancer.server.port=80"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.enabled=true"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.crowdseclapikey=44c36dac5c4140af9f06f397508e82c7"
 
   crowdsec:
     image: crowdsecurity/crowdsec:v1.4.1
     container_name: "crowdsec"
+    restart: unless-stopped
     environment:
       COLLECTIONS: crowdsecurity/traefik
       CUSTOM_HOSTNAME: crowdsec

docker-compose.yml

@@ -2,8 +2,9 @@ version: "3.8"
 
 services:
   traefik:
-    image: "traefik:v2.8.8"
+    image: "traefik:v2.9.4"
     container_name: "traefik"
+    restart: unless-stopped
     command:
       - "--accesslog"
       - "--accesslog.filepath=/var/log/traefik/access.log"
@@ -13,7 +14,7 @@ services:
       - "--entrypoints.web.address=:80"
 
       - "--experimental.plugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
-      - "--experimental.plugins.bouncer.version=v1.0.9"
+      - "--experimental.plugins.bouncer.version=v1.1.2"
     volumes:
       - "/var/run/docker.sock:/var/run/docker.sock:ro"
       - "logs:/var/log/traefik"
@@ -25,43 +26,46 @@ services:
 
   whoami1:
     image: traefik/whoami
-    container_name: "simple-service-1"
+    container_name: "simple-service-foo"
+    restart: unless-stopped
     labels:
       - "traefik.enable=true"
       # Definition of the router
-      - "traefik.http.routers.router1.rule=Host(`localhost`) && Path(`/foo`)"
-      - "traefik.http.routers.router1.entrypoints=web"
-      - "traefik.http.routers.router1.middlewares=crowdsec2@docker"
+      - "traefik.http.routers.router-foo.rule=Path(`/foo`)"
+      - "traefik.http.routers.router-foo.entrypoints=web"
+      - "traefik.http.routers.router-foo.middlewares=crowdsec-foo@docker"
       # Definition of the service
-      - "traefik.http.services.service1.loadbalancer.server.port=80"
+      - "traefik.http.services.service-foo.loadbalancer.server.port=80"
       # Definition of the middleware
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.enabled=true"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.enabled=true"
       # crowdseclapikey must be unique to the middleware attached to the service
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.crowdseclapikey=FIXME-LAPI-KEY-1"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.crowdseclapikey=FIXME-LAPI-KEY-1"
       # forwardedheaderstrustedips should be the IP of the proxy that is in front of traefik (if any)
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
   
   whoami2:
     image: traefik/whoami
-    container_name: "simple-service-2"
+    container_name: "simple-service-bar"
+    restart: unless-stopped
     labels:
       - "traefik.enable=true"
       # Definition of the router
-      - "traefik.http.routers.router2.rule=Host(`localhost`) && Path(`/bar`)"
-      - "traefik.http.routers.router2.entrypoints=web"
-      - "traefik.http.routers.router2.middlewares=crowdsec2@docker"
+      - "traefik.http.routers.router-bar.rule=Path(`/bar`)"
+      - "traefik.http.routers.router-bar.entrypoints=web"
+      - "traefik.http.routers.router-bar.middlewares=crowdsec-bar@docker"
       # Definition of the service
-      - "traefik.http.services.service2.loadbalancer.server.port=80"
+      - "traefik.http.services.service-bar.loadbalancer.server.port=80"
       # Definitin of the middleware
-      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.enabled=true"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.enabled=true"
       # crowdseclapikey must be unique to the middleware attached to the service
-      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.crowdseclapikey=FIXME-LAPI-KEY-2"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.crowdseclapikey=FIXME-LAPI-KEY-2"
       # forwardedheaderstrustedips should be the IP of the proxy that is in front of traefik (if any)
-      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
 
   crowdsec:
     image: crowdsecurity/crowdsec:v1.4.1
     container_name: "crowdsec"
+    restart: unless-stopped
     environment:
       COLLECTIONS: crowdsecurity/traefik
       CUSTOM_HOSTNAME: crowdsec

exemples/behind-proxy/docker-compose.cloudflare.yml

@@ -2,8 +2,9 @@ version: "3.8"
 
 services:
   cloudflare:
-    image: "traefik:v2.8.8"
+    image: "traefik:v2.9.4"
     container_name: "cloudflare"
+    restart: unless-stopped
     command:
       # - "--log.level=DEBUG"
       - "--accesslog"
@@ -21,8 +22,9 @@ services:
       - 8080:8080
 
   traefik:
-    image: "traefik:v2.8.8"
+    image: "traefik:v2.9.4"
     container_name: "traefik"
+    restart: unless-stopped
     command:
       # - "--log.level=DEBUG"
       - "--accesslog"
@@ -34,10 +36,10 @@ services:
       - "--entrypoints.web.forwardedheaders.trustedips=172.21.0.5"
 
       - "--experimental.plugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
-      - "--experimental.plugins.bouncer.version=v1.0.9"
+      - "--experimental.plugins.bouncer.version=v1.1.3"
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
-      - logs-dev:/var/log/traefik
+      - logs-traefik:/var/log/traefik
     ports:
       - 90:80
       - 9080:8080
@@ -46,26 +48,49 @@ services:
 
   whoami1:
     image: traefik/whoami
-    container_name: "simple-service1"
+    container_name: "simple-service-foo"
+    restart: unless-stopped
     labels:
       - "traefik.enable=true"
       # Definition of the router
-      - "traefik.http.routers.router1.rule=Path(`/foo`)"
-      - "traefik.http.routers.router1.entrypoints=web"
-      - "traefik.http.routers.router1.middlewares=crowdsec1@docker" 
+      - "traefik.http.routers.router-foo.rule=Path(`/foo`)"
+      - "traefik.http.routers.router-foo.entrypoints=web"
+      - "traefik.http.routers.router-foo.middlewares=crowdsec-foo@docker" 
       # Definition of the service
-      - "traefik.http.services.service1.loadbalancer.server.port=80"
+      - "traefik.http.services.service-foo.loadbalancer.server.port=80"
       # Definitin of the middleware
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.enabled=true"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.enabled=true"
       # crowdseclapikey must be uniq to the middleware attached to the service
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5"
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.crowdsecmode=live"
-      - "traefik.http.middlewares.crowdsec1.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.crowdsecmode=live"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.loglevel=DEBUG"
+  
+  whoami2:
+    image: traefik/whoami
+    container_name: "simple-service-bar"
+    restart: unless-stopped
+    labels:
+      - "traefik.enable=true"
+      # Definition of the router
+      - "traefik.http.routers.router-bar.rule=Path(`/bar`)"
+      - "traefik.http.routers.router-bar.entrypoints=web"
+      - "traefik.http.routers.router-bar.middlewares=crowdsec-bar@docker" 
+      # Definition of the service
+      - "traefik.http.services.service-bar.loadbalancer.server.port=80"
+      # Definitin of the middleware
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.enabled=true"
+      # crowdseclapikey must be uniq to the middleware attached to the service
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.crowdseclapikey=44c36dac5c4140af9f06f397508e82c7"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.crowdsecmode=live"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.loglevel=DEBUG"
   
 
   crowdsec:
     image: crowdsecurity/crowdsec:v1.4.1
     container_name: "crowdsec"
+    restart: unless-stopped
     environment:
       COLLECTIONS: crowdsecurity/traefik
       CUSTOM_HOSTNAME: crowdsec
@@ -73,14 +98,14 @@ services:
       BOUNCER_KEY_TRAEFIK_DEV_2: 44c36dac5c4140af9f06f397508e82c7
     volumes:
       - ./acquis.yaml:/etc/crowdsec/acquis.yaml:ro
-      - logs-dev:/var/log/traefik:ro
-      - crowdsec-db-dev:/var/lib/crowdsec/data/
-      - crowdsec-config-dev:/etc/crowdsec/
+      - logs-cloudflare:/var/log/traefik:ro
+      - crowdsec-db-cloudflare:/var/lib/crowdsec/data/
+      - crowdsec-config-cloudflare:/etc/crowdsec/
     labels:
       - "traefik.enable=false"
 
 volumes:
-  logs-dev:
+  logs-traefik:
   logs-cloudflare:
-  crowdsec-db-dev:
-  crowdsec-config-dev:
+  crowdsec-db-cloudflare:
+  crowdsec-config-cloudflare:

exemples/redis-cache/acquis.yaml

@@ -0,0 +1,4 @@
+filenames:
+ - /var/log/traefik/access.log
+labels:
+  type: traefik

exemples/redis-cache/docker-compose.redis.yml

@@ -0,0 +1,101 @@
+version: "3.8"
+
+services:
+  traefik:
+    image: "traefik:v2.9.4"
+    container_name: "traefik"
+    restart: unless-stopped
+    command:
+      # - "--log.level=DEBUG"
+      - "--accesslog"
+      - "--accesslog.filepath=/var/log/traefik/access.log"
+      - "--api.insecure=true"
+      - "--providers.docker=true"
+      - "--providers.docker.exposedbydefault=false"
+      - "--entrypoints.web.address=:80"
+
+      - "--experimental.plugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
+      - "--experimental.plugins.bouncer.version=v1.1.3"
+      # - "--experimental.localplugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - logs-redis:/var/log/traefik
+      - ./../../:/plugins-local/src/github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin
+    ports:
+      - 80:80
+      - 8080:8080
+    depends_on:
+      - crowdsec
+      - redis
+
+  whoami-foo:
+    image: traefik/whoami
+    container_name: "simple-service-foo"
+    restart: unless-stopped
+    labels:
+      - "traefik.enable=true"
+      # Definition of the router
+      - "traefik.http.routers.router-foo.rule=Path(`/foo`)"
+      - "traefik.http.routers.router-foo.entrypoints=web"
+      - "traefik.http.routers.router-foo.middlewares=crowdsec-foo@docker" 
+      # Definition of the service
+      - "traefik.http.services.service-foo.loadbalancer.server.port=80"
+      # Definition of the middleware
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.enabled=true"
+      # crowdseclapikey must be uniq to the middleware attached to the service
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.rediscacheenabled=true"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.loglevel=DEBUG"
+
+  whoami-bar:
+    image: traefik/whoami
+    container_name: "simple-service-bar"
+    restart: unless-stopped
+    labels:
+      - "traefik.enable=true"
+      # Definition of the router
+      - "traefik.http.routers.router-bar.rule=Path(`/bar`)"
+      - "traefik.http.routers.router-bar.entrypoints=web"
+      - "traefik.http.routers.router-bar.middlewares=crowdsec-bar@docker" 
+      # Definition of the service
+      - "traefik.http.services.service-bar.loadbalancer.server.port=80"
+      # Definition of the middleware
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.enabled=true"
+      # crowdseclapikey must be uniq to the middleware attached to the service
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.crowdseclapikey=44c36dac5c4140af9f06f397508e82c7"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.rediscacheenabled=true"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.loglevel=DEBUG"
+
+
+  crowdsec:
+    image: crowdsecurity/crowdsec:v1.4.1
+    container_name: "crowdsec"
+    restart: unless-stopped
+    environment:
+      COLLECTIONS: crowdsecurity/traefik
+      CUSTOM_HOSTNAME: crowdsec
+      BOUNCER_KEY_TRAEFIK_DEV_1: 40796d93c2958f9e58345514e67740e5
+      BOUNCER_KEY_TRAEFIK_DEV_2: 44c36dac5c4140af9f06f397508e82c7
+    volumes:
+      - ./acquis.yaml:/etc/crowdsec/acquis.yaml:ro
+      - logs-redis:/var/log/traefik:ro
+      - crowdsec-db-redis:/var/lib/crowdsec/data/
+      - crowdsec-config-redis:/etc/crowdsec/
+    labels:
+      - "traefik.enable=false"
+
+  redis:
+    image: "redis:7.0.5-alpine"
+    container_name: "redis"
+    restart: unless-stopped
+    command: "redis-server --save 60 1"
+    volumes:
+      - redis-data:/data
+    ports:
+      - 6379:6379
+
+volumes:
+  logs-redis:
+  crowdsec-db-redis:
+  crowdsec-config-redis:
+  redis-data:

exemples/trusted-ips/acquis.yaml

@@ -0,0 +1,4 @@
+filenames:
+ - /var/log/traefik/access.log
+labels:
+  type: traefik

exemples/trusted-ips/docker-compose.trusted.yml

@@ -0,0 +1,91 @@
+version: "3.8"
+
+services:
+  traefik:
+    image: "traefik:v2.9.4"
+    container_name: "traefik"
+    restart: unless-stopped
+    command:
+      # - "--log.level=DEBUG"
+      - "--accesslog"
+      - "--accesslog.filepath=/var/log/traefik/access.log"
+      - "--api.insecure=true"
+      - "--providers.docker=true"
+      - "--providers.docker.exposedbydefault=false"
+      - "--entrypoints.web.address=:80"
+
+      - "--experimental.plugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
+      - "--experimental.plugins.bouncer.version=v1.1.3"
+      # - "--experimental.localplugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - logs-trustedips:/var/log/traefik
+      - ./../../:/plugins-local/src/github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin
+    ports:
+      - 80:80
+      - 8080:8080
+    depends_on:
+      - crowdsec
+
+  whoami1:
+    image: traefik/whoami
+    container_name: "simple-service-foo"
+    restart: unless-stopped
+    labels:
+      - "traefik.enable=true"
+      # Definition of the router
+      - "traefik.http.routers.router-foo.rule=Path(`/foo`)"
+      - "traefik.http.routers.router-foo.entrypoints=web"
+      - "traefik.http.routers.router-foo.middlewares=crowdsec-foo@docker" 
+      # Definition of the service
+      - "traefik.http.services.service-foo.loadbalancer.server.port=80"
+      # Definition of the middleware
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.enabled=true"
+      # crowdseclapikey must be uniq to the middleware attached to the service
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5"
+      # Replace 10.0.10.30/32 by your IP range which is "trusted"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.clienttrustedips=10.0.10.30/32"
+      - "traefik.http.middlewares.crowdsec-foo.plugin.bouncer.loglevel=DEBUG"
+  
+  whoami2:
+    image: traefik/whoami
+    container_name: "simple-service-bar"
+    restart: unless-stopped
+    labels:
+      - "traefik.enable=true"
+      # Definition of the router
+      - "traefik.http.routers.router-bar.rule=Path(`/bar`)"
+      - "traefik.http.routers.router-bar.entrypoints=web"
+      - "traefik.http.routers.router-bar.middlewares=crowdsec-bar@docker" 
+      # Definition of the service
+      - "traefik.http.services.service-bar.loadbalancer.server.port=80"
+      # Definition of the middleware
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.enabled=true"
+      # crowdseclapikey must be uniq to the middleware attached to the service
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.crowdseclapikey=44c36dac5c4140af9f06f397508e82c7"
+      # Replace 10.0.10.30/32 by your IP range which is "trusted"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.clienttrustedips=10.0.10.30/32"
+      - "traefik.http.middlewares.crowdsec-bar.plugin.bouncer.loglevel=DEBUG"
+
+
+  crowdsec:
+    image: crowdsecurity/crowdsec:v1.4.1
+    container_name: "crowdsec"
+    restart: unless-stopped
+    environment:
+      COLLECTIONS: crowdsecurity/traefik
+      CUSTOM_HOSTNAME: crowdsec
+      BOUNCER_KEY_TRAEFIK_DEV_1: 40796d93c2958f9e58345514e67740e5
+      BOUNCER_KEY_TRAEFIK_DEV_2: 44c36dac5c4140af9f06f397508e82c7
+    volumes:
+      - ./acquis.yaml:/etc/crowdsec/acquis.yaml:ro
+      - logs-trustedips:/var/log/traefik:ro
+      - crowdsec-db-trustedips:/var/lib/crowdsec/data/
+      - crowdsec-config-trustedips:/etc/crowdsec/
+    labels:
+      - "traefik.enable=false"
+  
+volumes:
+  logs-trustedips:
+  crowdsec-db-trustedips:
+  crowdsec-config-trustedips:

go.mod

@@ -1,5 +1,5 @@
 module github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin
 
-go 1.17
+go 1.18
 
 require github.com/leprosus/golang-ttl-map v1.1.7

pkg/cache/cache.go

@@ -0,0 +1,98 @@
+package cache
+
+import (
+	"fmt"
+
+	ttl_map "github.com/leprosus/golang-ttl-map"
+
+	logger "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger"
+	simpleredis "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/redis"
+)
+
+const (
+	cacheBannedValue   = "t"
+	cacheNoBannedValue = "f"
+)
+
+var cache = ttl_map.New()
+var redis simpleredis.SimpleRedis
+
+var redisEnabled = false
+
+// CLASSIC
+
+func getDecisionLocalCache(clientIP string) (bool, error) {
+	banned, isCached := cache.Get(clientIP)
+	bannedString, isValid := banned.(string)
+	if isCached && isValid && len(bannedString) > 0 {
+		return bannedString == cacheBannedValue, nil
+	}
+	return false, fmt.Errorf("cache:miss")
+}
+
+func setDecisionLocalCache(clientIP string, value string, duration int64) {
+	cache.Set(clientIP, value, duration)
+}
+
+func deleteDecisionLocalCache(clientIP string) {
+	cache.Del(clientIP)
+}
+
+// REDIS
+
+func getDecisionRedisCache(clientIP string) (bool, error) {
+	banned, err := redis.Get(clientIP)
+	bannedString := string(banned)
+	if err == nil && len(bannedString) > 0 {
+		return bannedString == cacheBannedValue, nil
+	}
+	return false, err
+}
+
+func setDecisionRedisCache(clientIP string, value string, duration int64) {
+	redis.Set(clientIP, []byte(value), duration)
+}
+
+func deleteDecisionRedisCache(clientIP string) {
+	redis.Del(clientIP)
+}
+
+// DeleteDecision delete decision in cache
+func DeleteDecision(clientIP string) {
+	if redisEnabled {
+		deleteDecisionRedisCache(clientIP)
+	} else {
+		deleteDecisionLocalCache(clientIP)
+	}
+}
+
+// GetDecision check in the cache if the IP has the banned / not banned value.
+// Otherwise return with an error to add the IP in cache if we are on.
+func GetDecision(clientIP string) (bool, error) {
+	if redisEnabled {
+		return getDecisionRedisCache(clientIP)
+	} else {
+		return getDecisionLocalCache(clientIP)
+	}
+}
+
+func SetDecision(clientIP string, isBanned bool, duration int64) {
+	var value string
+	if isBanned {
+		logger.Debug(fmt.Sprintf("%v banned", clientIP))
+		value = cacheBannedValue
+	} else {
+		value = cacheNoBannedValue
+	}
+	if redisEnabled {
+		setDecisionRedisCache(clientIP, value, duration)
+	} else {
+		setDecisionLocalCache(clientIP, value, duration)
+	}
+}
+
+func InitRedisClient(host string) {
+	redisEnabled = true
+	redis.Init(host)
+	logger.Debug("Redis initialized")
+}

pkg/ip/ip.go

@@ -6,6 +6,8 @@ import (
 	"net"
 	"net/http"
 	"strings"
+
+	"github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger"
 )
 
 // CHECKER
@@ -18,15 +20,12 @@ type Checker struct {
 
 // NewChecker builds a new Checker given a list of CIDR-Strings to trusted IPs.
 func NewChecker(trustedIPs []string) (*Checker, error) {
-	if len(trustedIPs) == 0 {
-		return nil, errors.New("no trusted IPs provided")
-	}
-
 	checker := &Checker{}
 
 	for _, ipMask := range trustedIPs {
 		if ipAddr := net.ParseIP(ipMask); ipAddr != nil {
 			checker.authorizedIPs = append(checker.authorizedIPs, &ipAddr)
+			logger.Debug(fmt.Sprintf("IP %v is trusted", ipAddr))
 			continue
 		}
 
@@ -35,6 +34,7 @@ func NewChecker(trustedIPs []string) (*Checker, error) {
 			return nil, fmt.Errorf("parsing CIDR trusted IPs %s: %w", ipAddr, err)
 		}
 		checker.authorizedIPsNet = append(checker.authorizedIPsNet, ipAddr)
+		logger.Debug(fmt.Sprintf("IP network %v is trusted", ipAddr))
 	}
 
 	return checker, nil
@@ -80,16 +80,8 @@ func parseIP(addr string) (net.IP, error) {
 	return userIP, nil
 }
 
-
-
-
-
 // STRATEGY
 
-const (
-	xForwardedFor = "X-Forwarded-For"
-)
-
 // PoolStrategy is a strategy based on an IP Checker.
 // It allows to check whether addresses are in a given pool of IPs.
 type PoolStrategy struct {
@@ -99,12 +91,13 @@ type PoolStrategy struct {
 // GetIP checks the list of Forwarded IPs (most recent first) against the
 // Checker pool of IPs. It returns the first IP that is not in the pool, or the
 // empty string otherwise.
-func (s *PoolStrategy) GetIP(req *http.Request) string {
+func (s *PoolStrategy) getIP(req *http.Request, customHeader string) string {
 	if s.Checker == nil {
 		return ""
 	}
 
-	xff := req.Header.Get(xForwardedFor)
+	xff := req.Header.Get(customHeader)
+
 	xffs := strings.Split(xff, ",")
 
 	for i := len(xffs) - 1; i >= 0; i-- {
@@ -119,3 +112,16 @@ func (s *PoolStrategy) GetIP(req *http.Request) string {
 
 	return ""
 }
+
+// GetRemoteIP It returns the first IP that is not in the pool, or the empty string otherwise.
+func GetRemoteIP(req *http.Request, strategy *PoolStrategy, customHeader string) (string, error) {
+	remoteIP := strategy.getIP(req, customHeader)
+	if len(remoteIP) != 0 {
+		return remoteIP, nil
+	}
+	remoteIP, _, err := net.SplitHostPort(req.RemoteAddr)
+	if err != nil {
+		return "", fmt.Errorf("failed to extract ip from remote address: %w", err)
+	}
+	return remoteIP, nil
+}

pkg/logger/logger.go

@@ -0,0 +1,35 @@
+package logger
+
+import (
+	"io"
+	"log"
+	"os"
+)
+
+var (
+	loggerInfo  = log.New(io.Discard, "INFO: CrowdsecBouncerTraefikPlugin: ", log.Ldate|log.Ltime)
+	loggerDebug = log.New(io.Discard, "DEBUG: CrowdsecBouncerTraefikPlugin: ", log.Ldate|log.Ltime)
+)
+
+// Init Set Default log level to info in case log level to defined
+func Init(logLevel string) {
+	switch logLevel {
+	case "INFO":
+		loggerInfo.SetOutput(os.Stdout)
+	case "DEBUG":
+		loggerInfo.SetOutput(os.Stdout)
+		loggerDebug.SetOutput(os.Stdout)
+	default:
+		loggerInfo.SetOutput(os.Stdout)
+	}
+}
+
+// Info Log info
+func Info(str string) {
+	loggerInfo.Printf(str)
+}
+
+// Info Log debug
+func Debug(str string) {
+	loggerDebug.Printf(str)
+}

pkg/redis/redis.go

@@ -0,0 +1,122 @@
+package simpleredis
+
+import (
+	"bufio"
+	"fmt"
+	"net"
+	"net/textproto"
+	"strings"
+	"time"
+
+	logger "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger"
+)
+
+const (
+	RedisUnreachable = "redis:unreachable"
+	RedisMiss = "redis:miss"
+	RedisTimeout = "redis:timeout"
+)
+
+type RedisCmd struct {
+	Command  string
+	Name     string
+	Data     []byte
+	Duration int64
+	Error    error
+}
+
+type SimpleRedis struct {
+	redisHost string
+}
+
+func genRedisArray(params ...[]byte) []byte {
+	MSG := ""
+	for cntr := 0; cntr < len(params); cntr++ {
+		MSG = strings.Join([]string{MSG, string(params[cntr])}, " ")
+	}
+	MSG = strings.Trim(MSG, " ")
+	MSG = strings.Join([]string{MSG, "\r\n"}, "")
+	return []byte(MSG)
+}
+
+func askRedis(hostnamePort string, cmd RedisCmd, channel chan RedisCmd) {
+	dialer := net.Dialer{Timeout: 2 * time.Second}
+	conn, err := dialer.Dial("tcp", hostnamePort)
+	if err != nil {
+		channel <- RedisCmd{Error: fmt.Errorf(RedisUnreachable)}
+		return
+	}
+	defer conn.Close()
+
+	writer := textproto.NewWriter(bufio.NewWriter(conn))
+	reader := textproto.NewReader(bufio.NewReader(conn))
+
+	switch cmd.Command {
+	case "SET":
+		data := genRedisArray([]byte("SET"), []byte(cmd.Name), []byte(cmd.Data), []byte("EX"), []byte(fmt.Sprintf("%v", cmd.Duration)))
+		writer.PrintfLine(string(data))
+		logger.Debug("redis:set")
+	case "DEL":
+		data := genRedisArray([]byte("DEL"), []byte(cmd.Name))
+		writer.PrintfLine(string(data))
+		logger.Debug("redis:del")
+	case "GET":
+		data := genRedisArray([]byte("GET"), []byte(cmd.Name))
+		writer.PrintfLine(string(data))
+		logger.Debug("redis:get")
+		for {
+			select {
+			case <-time.After(time.Second * 1):
+				channel <- RedisCmd{Error: fmt.Errorf(RedisTimeout)}
+				return
+			default:
+				read, _ := reader.ReadLineBytes()
+				if string(read) != "$1" {
+					channel <- RedisCmd{Error: fmt.Errorf(RedisMiss)}
+					return
+				}
+				read, _ = reader.ReadLineBytes()
+				channel <- RedisCmd{Data: read}
+				return
+			}
+		}
+	}
+}
+
+func (sr *SimpleRedis) Init(redisHost string) {
+	sr.redisHost = redisHost
+}
+
+func (sr *SimpleRedis) Get(name string) ([]byte, error) {
+	redisCmd := RedisCmd{
+		Command: "GET",
+		Name:    name,
+	}
+	channel := make(chan RedisCmd)
+	go askRedis(sr.redisHost, redisCmd, channel)
+	resp := <-channel
+	if resp.Error != nil {
+		return nil, resp.Error
+	}
+	return resp.Data, nil
+}
+
+func (sr *SimpleRedis) Set(name string, data []byte, duration int64) error {
+	redisCmd := RedisCmd{
+		Command:  "SET",
+		Name:     name,
+		Data:     data,
+		Duration: duration,
+	}
+	go askRedis(sr.redisHost, redisCmd, nil)
+	return nil
+}
+
+func (sr *SimpleRedis) Del(name string) error {
+	redisCmd := RedisCmd{
+		Command: "DEL",
+		Name:    name,
+	}
+	go askRedis(sr.redisHost, redisCmd, nil)
+	return nil
+}