🐛 fix appsec bypass with invalid content-length (#321)

* Add Warn and Trace loglevels

* Move to slog

* fixes

* missing test file

* Fix tests

* Add wrapper with trace

* fix

* fix lint

* LINT

* LINT

* 🍱 Use only 4 level of logs

* fix after merge

* 🍱 fix lint

* 🍱 fix lint + remove trace logger from tests

* 🍱 fix tests

* 🍱 fix lint

* 🍱 try to fix test

* 🍱 Fix tests

* 🍱 fix README + adjust logs

---------

Co-authored-by: maxlerebourg <maxlerebourg@gmail.com>

.github/dependabot.yml

@@ -0,0 +1,24 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  # Maintain dependencies for Go
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  # Maintain dependencies for build tools
+  - package-ecosystem: "gomod"
+    directory: "/tools"
+    schedule:
+      interval: "weekly"
+
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/go-cross.yml

@@ -1,47 +0,0 @@
-name: Go Matrix
-on: [push, pull_request]
-
-jobs:
-
-  cross:
-    name: Go
-    runs-on: ${{ matrix.os }}
-    env:
-      CGO_ENABLED: 0
-
-    strategy:
-      matrix:
-        go-version: [ 1.19, 1.x ]
-        os: [ubuntu-latest, macos-latest, windows-latest]
-
-    steps:
-      # https://github.com/marketplace/actions/setup-go-environment
-      - name: Set up Go ${{ matrix.go-version }}
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ matrix.go-version }}
-
-      # https://github.com/marketplace/actions/checkout
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      # https://github.com/marketplace/actions/cache
-      - name: Cache Go modules
-        uses: actions/cache@v2
-        with:
-          # In order:
-          # * Module download cache
-          # * Build cache (Linux)
-          # * Build cache (Mac)
-          # * Build cache (Windows)
-          path: |
-            ~/go/pkg/mod
-            ~/.cache/go-build
-            ~/Library/Caches/go-build
-            %LocalAppData%\go-build
-          key: ${{ runner.os }}-${{ matrix.go-version }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-${{ matrix.go-version }}-go-
-
-      - name: Test
-        run: go test -v -cover ./...

.github/workflows/main.yml

@@ -1,5 +1,8 @@
 name: Main
 
+permissions:
+  contents: read
+
 on:
   push:
     branches:
@@ -12,9 +15,9 @@ jobs:
     name: Main Process
     runs-on: ubuntu-latest
     env:
-      GO_VERSION: 1.19
-      GOLANGCI_LINT_VERSION: v1.50.0
-      YAEGI_VERSION: v0.14.2
+      GO_VERSION: 1.23
+      GOLANGCI_LINT_VERSION: v1.63.4
+      YAEGI_VERSION: v0.16.1
       CGO_ENABLED: 0
     defaults:
       run:
@@ -24,20 +27,20 @@ jobs:
 
       # https://github.com/marketplace/actions/setup-go-environment
       - name: Set up Go ${{ env.GO_VERSION }}
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v6
         with:
           go-version: ${{ env.GO_VERSION }}
 
       # https://github.com/marketplace/actions/checkout
       - name: Check out code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
         with:
           path: go/src/github.com/${{ github.repository }}
           fetch-depth: 0
 
       # https://github.com/marketplace/actions/cache
       - name: Cache Go modules
-        uses: actions/cache@v2
+        uses: actions/cache@v5
         with:
           path: ${{ github.workspace }}/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}

.github/workflows/release.yml

@@ -0,0 +1,46 @@
+name: Release Version Update
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: write
+
+jobs:
+  update-version:
+    name: Update version in source
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+        with:
+          ref: main
+
+      - name: Extract version from tag
+        id: get_version
+        run: |
+          TAG="${{ github.event.release.tag_name }}"
+          VERSION="${TAG#v}"
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+          echo "tag=$TAG" >> "$GITHUB_OUTPUT"
+
+      - name: Update version in version.go
+        run: |
+          sed -i 's/pluginVersion = "[^"]*"/pluginVersion = "'"${{ steps.get_version.outputs.version }}"'"/' version.go
+          cat version.go
+
+      - name: Commit, push, and retag
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add version.go
+          if git diff --cached --quiet; then
+            echo "Version already up to date, nothing to commit"
+            exit 0
+          fi
+          git commit -m "⬆️ chore: bump version to ${{ steps.get_version.outputs.version }}"
+          git push origin main
+          # Move the release tag to include the version update
+          git tag -f "${{ steps.get_version.outputs.tag }}"
+          git push -f origin "${{ steps.get_version.outputs.tag }}"

.golangci.yml

@@ -1,15 +1,11 @@
 run:
   timeout: 3m
-  skip-files: []
-  skip-dirs: []
 
 linters-settings:
   govet:
     enable-all: true
     disable:
       - fieldalignment
-  golint:
-    min-confidence: 0
   gocyclo:
     min-complexity: 15
   goconst:
@@ -19,30 +15,43 @@ linters-settings:
     locale: US
   funlen:
     lines: -1
-    statements: 50
+    statements: 60
   godox:
     keywords:
       - FIXME
   gofumpt:
     extra-rules: true
+  depguard:
+    rules:
+      Main:
+        files:
+          - $all
+          - "!$test"
+        allow:
+          - $gostd
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/ip
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/configuration
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/cache
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/captcha
+          - github.com/leprosus/golang-ttl-map
+          - github.com/maxlerebourg/simpleredis
+      Test:
+        files:
+          - $test
+        allow:
+          - $gostd
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/ip
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/configuration
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/cache
+          - github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/captcha
 
 linters:
   enable-all: true
   disable:
-    - deadcode # deprecated
-    - exhaustivestruct # deprecated
-    - golint # deprecated
-    - ifshort # deprecated
-    - interfacer # deprecated
-    - maligned # deprecated
-    - nosnakecase # deprecated
-    - scopelint # deprecated
-    - scopelint # deprecated
-    - structcheck # deprecated
-    - varcheck # deprecated
     - sqlclosecheck # not relevant (SQL)
     - rowserrcheck # not relevant (SQL)
-    - execinquery # not relevant (SQL)
     - cyclop # duplicate of gocyclo
     - bodyclose # Too many false positives: https://github.com/timakin/bodyclose/issues/30
     - dupl
@@ -53,21 +62,20 @@ linters:
     - wsl
     - exhaustive
     - exhaustruct
-    - goerr113
+    - err113
     - wrapcheck
-    - ifshort
     - noctx
     - lll
-    - gomnd
     - forbidigo
     - varnamelen
     - wastedassign # is disabled because of generics
     - gofumpt
     - gci
-
+    - mnd
+    - exportloopref
+    - contextcheck
 issues:
   exclude-use-default: false
-  max-per-linter: 0
   max-same-issues: 0
   exclude:
     - "G402: TLS InsecureSkipVerify may be true."

Makefile

@@ -41,13 +41,16 @@ run_tlsauth:
 	docker compose -f examples/tls-auth/docker-compose.yml up  -d --remove-orphans
 
 run_appsec:
-	docker compose -f examples/appsec-enabled/docker-compose.yml up -d
+	docker compose -f examples/appsec-enabled/docker-compose.yml up -d --remove-orphans
+
+run_custom_captcha:
+	docker compose -f examples/custom-captcha/docker-compose.yml up -d --remove-orphans
 
 run_captcha:
-	docker compose -f examples/captcha/docker-compose.yml up -d
+	docker compose -f examples/captcha/docker-compose.yml up -d --remove-orphans
 
 run_custom_ban_page:
-	docker compose -f examples/custom-ban-page/docker-compose.yml up -d
+	docker compose -f examples/custom-ban-page/docker-compose.yml up -d --remove-orphans
 
 run:
 	docker compose -f docker-compose.yml up -d --remove-orphans
@@ -98,6 +101,7 @@ clean_all_docker:
 	docker compose -f examples/tls-auth/docker-compose.yml down --remove-orphans
 	docker compose -f examples/appsec-enabled/docker-compose.yml down --remove-orphans
 	docker compose -f examples/captcha/docker-compose.yml down --remove-orphans
+	docker compose -f examples/custom-captcha/docker-compose.yml down --remove-orphans
 	docker compose -f examples/custom-ban-page/docker-compose.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 +26,7 @@ The AppSec Component offers:
 - Low-effort virtual patching capabilities.
 - Support for your legacy ModSecurity rules.
 - Combining classic WAF benefits with advanced CrowdSec features for otherwise difficult advanced behavior detection.
+
 More information on appsec in the [Crowdsec Documentation](https://doc.crowdsec.net/docs/next/appsec/intro/).
 
 Remediation offered by [Crowdsec](https://docs.crowdsec.net/u/bouncers/intro) and supported by the plugin can be either `ban` or `captcha`.  
@@ -34,24 +35,25 @@ For the `captcha` remediation, the user will be redirected to a page to complete
 
 On successfull completion, he will be cleaned for a specified period of time before a new resolution challenge is expected if Crowdsec still has a decision to verify the user behavior. See the example captcha for more informations and configuration intructions.  
 The following captcha providers are supported now:
- - [hcaptcha](https://www.hcaptcha.com/)
- - [recaptcha](https://www.google.com/recaptcha/about/)
- - [turnstile](https://www.cloudflare.com/fr-fr/products/turnstile/)
 
+- [hcaptcha](https://www.hcaptcha.com/)
+- [recaptcha](https://www.google.com/recaptcha/about/)
+- [turnstile](https://www.cloudflare.com/products/turnstile/)
+- [custom/wicketkeeper](https://github.com/a-ve/wicketkeeper)
 
 There are 5 operating modes (CrowdsecMode) for this plugin:
 
-| Mode | Description |
-|------|------|
-| none | If the client IP is on ban list, it will get a http code 403 response. Otherwise, request will continue as usual. All request call the Crowdsec LAPI |
-| live | If the client IP is on ban list, it will get a http code 403 response. Otherwise, request will continue as usual.    The bouncer can leverage use of a local cache in order to reduce the number of requests made to the Crowdsec LAPI. It will keep in cache the status for each IP that makes queries. |
-| stream | Stream Streaming mode allows you to keep in the local cache only the Banned IPs, every requests that does not hit the cache is authorized. Every minute, the cache is updated with news from the Crowdsec LAPI. |
-| alone | Standalone mode, similar to the streaming mode but the blacklisted IPs are fetched on the CAPI. Every 2 hours, the cache is updated with news from the Crowdsec CAPI. It does not include any locally banned IP, but can work without a crowdsec service. |
-| appsec | Disable Crowdsec IP checking but apply Crowdsec Appsec checking. This mode is intended to be used when Crowdsec IP checking is applied at the Firewall Level. |
+| Mode   | Description                                                                                                                                                                                                                                                                                           |
+| ------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| none   | If the client IP is on ban list, it will get a http code 403 response. Otherwise, request will continue as usual. All request call the Crowdsec LAPI                                                                                                                                                  |
+| live   | If the client IP is on ban list, it will get a http code 403 response. Otherwise, request will continue as usual. The bouncer can leverage use of a local cache in order to reduce the number of requests made to the Crowdsec LAPI. It will keep in cache the status for each IP that makes queries. |
+| stream | Stream Streaming mode allows you to keep in the local cache only the Banned IPs, every requests that does not hit the cache is authorized. Every minute, the cache is updated with news from the Crowdsec LAPI.                                                                                       |
+| alone  | Standalone mode, similar to the streaming mode but the blacklisted IPs are fetched on the CAPI. Every 2 hours, the cache is updated with news from the Crowdsec CAPI. It does not include any locally banned IP, but can work without a crowdsec service.                                             |
+| appsec | Disable Crowdsec IP checking but apply Crowdsec Appsec checking. This mode is intended to be used when Crowdsec IP checking is applied at the Firewall Level.                                                                                                                                         |
 
 The `streaming mode` is recommended for performance, decisions are updated every 60 sec by default and that's the only communication between Traefik and Crowdsec. Every request that happens hits the cache for quick decisions.
 
-The cache can be local to Traefik using the filesystem, or a separate Redis instance.  
+The cache can be local to Traefik in memory or using a separate Redis instance.
 
 Below are Mermaid diagrams detailling how each mode work:
 
@@ -300,24 +302,48 @@ sequenceDiagram
 To get started, use the `docker-compose.yml` file.
 
 You can run it with:
+
 ```bash
 make run
 ```
 
 ### Note
 
-**/!\ Cache is shared by all services**
-*This means if an IP is banned, all services which are protected by an instance of the plugin will deny requests from that IP*
-Only one instance of the plugin is *possible*.
+> [!IMPORTANT]  
+> Some of the behaviours and configuration parameters are shared globally across _all_ crowdsec middlewares even if you declare different middlewares with different settings.
+>
+> **Cache is shared by all services**: This means if an IP is banned, all services which are protected by an instance of the plugin will deny requests from that IP
+>
+> If you define different caches for different middlewares, only the first one to be instantiated will be bound to the crowdsec stream.
+>
+> Overall, this middleware is designed in such a way that **only one instance of the plugin is _possible_.** You can have multiple crowdsec middlewares in the same cluster, the key parameters must be aligned (MetricsUpdateIntervalSeconds, CrowdsecMode, CrowdsecAppsecEnabled, etc.)
+
+> [!WARNING]  
+> **Appsec maximum body limit is defaulted to 10MB** > _Be careful when you upgrade to >1.4.x_
 
 ### Variables
+
 - Enabled
   - bool
   - default: false
   - Enable the plugin
 - LogLevel
   - string
-  - default: `INFO`, expected values are: `INFO`, `DEBUG`, `ERROR`, log are written to `stdout` / `stderr`
+  - default: `INFO`, expected values are: `DEBUG`, `INFO`, `WARN`, `ERROR`
+  - Log are written to `stdout` / `stderr` or file if LogFilePath is provided
+- LogFormat
+  - string
+  - default: `common`, expected values are: `common`, `json`
+  - Log format: `common` for traditional text logs, `json` for structured JSON logs
+- LogFilePath
+  - string
+  - default: ""
+  - File Path to write logs, must be writable by Traefik, Log rotation may require a restart of traefik
+- MetricsUpdateIntervalSeconds
+  - int64
+  - default: 600
+  - Interval in seconds between metrics updates to Crowdsec
+  - If set to zero or less, metrics collection is disabled
 - CrowdsecMode
   - string
   - default: `live`, expected values are: `none`, `live`, `stream`, `alone`, `appsec`
@@ -328,11 +354,38 @@ Only one instance of the plugin is *possible*.
 - CrowdsecAppsecHost
   - string
   - default: "crowdsec:7422"
-  - Crowdsec Appsec Server available on which host and port. The scheme will be handled by the CrowdsecLapiScheme var.
+  - Crowdsec Appsec Server available on which host and port.
+- CrowdsecAppsecTlsInsecureVerify
+  - bool
+  - default: false
+  - Disable verification of certificate presented by Appsec
+- CrowdsecAppsecTlsCertificateAuthority
+  - string
+  - default: ""
+  - PEM-encoded Certificate Authority of Appsec
+- CrowdsecAppsecScheme
+  - string
+  - default: value of `CrowdsecLapiScheme`, expected values are: `http`, `https`
+- CrowdsecAppsecPath
+  - string
+  - default: "/"
+  - Crowdsec Appsec Server available on this path. Will be appended to CrowdsecAppsecHost. Need to finish with "/".
 - CrowdsecAppsecFailureBlock
   - bool
   - default: true
   - Block request when Crowdsec Appsec Server have a [status 500](https://docs.crowdsec.net/docs/next/appsec/protocol#response-code).
+- CrowdsecAppsecUnreachableBlock
+  - bool
+  - default: true
+  - Block request when Crowdsec Appsec Server is unreachable.
+- CrowdsecAppsecBodyLimit
+  - int64
+  - default: 10485760 (= 10MB)
+  - Transmit only the first number of bytes to Crowdsec Appsec Server.
+- CrowdsecAppsecKey
+  - string
+  - default: value of `CrowdsecLapiKey`
+  - Crowdsec AppSec key for the bouncer.
 - CrowdsecLapiScheme
   - string
   - default: `http`, expected values are: `http`, `https`
@@ -340,6 +393,10 @@ Only one instance of the plugin is *possible*.
   - string
   - default: "crowdsec:8080"
   - Crowdsec LAPI available on which host and port.
+- CrowdsecLapiPath
+  - string
+  - default: "/"
+  - Crowdsec LAPI Server available on this path. Will be appended to CrowdsecLapiHost. Need to finish with "/".
 - CrowdsecLapiKey
   - string
   - default: ""
@@ -364,18 +421,22 @@ Only one instance of the plugin is *possible*.
   - string
   - default: []
   - List of client IPs to trust, they will bypass any check from the bouncer or cache (useful for LAN or VPN IP)
-- ForwardedHeadersTrustedIPs
-  - []string
-  - default: []
-  - List of IPs of trusted Proxies that are in front of traefik (ex: Cloudflare)
+- RemediationHeadersCustomName
+  - string
+  - default: ""
+  - Name of the header you want in response when request are handled by plugin (possible value of the header `ban`, `captcha` or `solved-captcha`)
 - ForwardedHeadersCustomName
   - string
   - default: "X-Forwarded-For"
   - Name of the header where the real IP of the client should be retrieved
+- ForwardedHeadersTrustedIPs
+  - []string
+  - default: []
+  - List of IPs of trusted Proxies that are in front of traefik (ex: Cloudflare)
 - RedisCacheEnabled
   - bool
   - default: false
-  - enable Redis cache instead of filesystem cache
+  - enable Redis cache instead of in-memory cache
 - RedisCacheHost
   - string
   - default: "redis:6379"
@@ -388,6 +449,10 @@ Only one instance of the plugin is *possible*.
   - string
   - default: ""
   - Database selection for the Redis service
+- RedisCacheUnreachableBlock
+  - bool
+  - default: true
+  - Block request when Redis is unreachable (if Redis is unreachable, 1-second delay is added to each request)
 - HTTPTimeoutSeconds
   - int64
   - default: 10
@@ -404,6 +469,10 @@ Only one instance of the plugin is *possible*.
   - int64
   - default: 60
   - Used only in `live` mode, maximum decision duration
+- RemediationStatusCode
+  - int
+  - default: 403
+  - HTTP status code for banned user (not captcha)
 - CrowdsecCapiMachineId
   - string
   - Used only in `alone` mode, login for Crowdsec CAPI
@@ -415,7 +484,19 @@ Only one instance of the plugin is *possible*.
   - Used only in `alone` mode, scenarios for Crowdsec CAPI
 - CaptchaProvider
   - string
-  - Provider to validate the captcha, expected values are: `hcaptcha`, `recaptcha`, `turnstile`
+  - Provider to validate the captcha, expected values are: `hcaptcha`, `recaptcha`, `turnstile` or `custom`
+- CaptchaCustomJsURL
+  - string
+  - If CaptchaProvider is `custom`, URL used to load the challenge in the HTML (in case of hcaptcha: `https://hcaptcha.com/1/api.js`)
+- CaptchaCustomValidateURL
+  - string
+  - If CaptchaProvider is `custom`, URL used to validate the challenge (in case of hcaptcha: `https://api.hcaptcha.com/siteverify`)
+- CaptchaCustomKey
+  - string
+  - If CaptchaProvider is `custom`, used to set class name of the div used by captcha provider (in case of hcaptcha: `h-captcha`)
+- CaptchaCustomResponse
+  - string
+  - If CaptchaProvider is `custom`, used to set the field in the POST body from the captcha.html to Traefik (in case of hcaptcha: `h-captcha-response`)
 - CaptchaSiteKey
   - string
   - Site key for the captcha provider
@@ -434,12 +515,17 @@ Only one instance of the plugin is *possible*.
   - string
   - default: ""
   - Path where the ban html file is stored (default empty ""=disabled)
+- TraceHeadersCustomName
+  - string
+  - default: ""
+  - Request Header name whose value to inject in ban HTML response (default empty ""=disabled)
 
 ### Configuration
 
 For each plugin, the Traefik static configuration must define the module name (as is usual for Go packages).
 
 The following declaration (given here in YAML) defines a plugin:
+
 > Note that you don't need to copy all thoses settings but only the ones you want to use.  
 > See the examples for advanced usage.
 
@@ -454,7 +540,37 @@ experimental:
 ```
 
 ```yaml
-# Dynamic configuration
+# Simplified dynamic configuration
+
+http:
+  routers:
+    my-router:
+      rule: host(`whoami.localhost`)
+      service: service-foo
+      entryPoints:
+        - web
+      middlewares:
+        - crowdsec
+
+  services:
+    service-foo:
+      loadBalancer:
+        servers:
+          - url: http://127.0.0.1:5000
+
+  middlewares:
+    crowdsec:
+      plugin:
+        bouncer:
+          enabled: true
+          logLevel: DEBUG
+          crowdsecMode: live
+          crowdsecLapiKey: privateKey-foo
+          crowdsecLapiHost: crowdsec:8080
+```
+
+```yaml
+# Full dynamic configuration
 
 http:
   routers:
@@ -478,18 +594,25 @@ http:
         bouncer:
           enabled: false
           logLevel: DEBUG
+          logFormat: common
+          LogFilePath: ""
           updateIntervalSeconds: 60
           updateMaxFailure: 0
           defaultDecisionSeconds: 60
+          remediationStatusCode: 403
           httpTimeoutSeconds: 10
           crowdsecMode: live
           crowdsecAppsecEnabled: false
+          crowdsecAppsecScheme: ""
           crowdsecAppsecHost: crowdsec:7422
+          crowdsecAppsecPath: "/"
           crowdsecAppsecFailureBlock: true
+          crowdsecAppsecUnreachableBlock: true
+          crowdsecAppsecBodyLimit: 10485760
           crowdsecLapiKey: privateKey-foo
-          crowdsecLapiKeyFile: /etc/traefik/cs-privateKey-foo
-          crowdsecLapiHost: crowdsec:8080
           crowdsecLapiScheme: http
+          crowdsecLapiHost: crowdsec:8080
+          crowdsecLapiPath: "/"
           crowdsecLapiTLSInsecureVerify: false
           crowdsecCapiMachineId: login
           crowdsecCapiPassword: password
@@ -503,17 +626,18 @@ http:
           clientTrustedIPs:
             - 192.168.1.0/24
           forwardedHeadersCustomName: X-Custom-Header
+          remediationHeadersCustomName: cs-remediation
           redisCacheEnabled: false
           redisCacheHost: "redis:6379"
           redisCachePassword: password
           redisCacheDatabase: "5"
+          redisCacheUnreachableBlock: true
           crowdsecLapiTLSCertificateAuthority: |-
             -----BEGIN CERTIFICATE-----
             MIIEBzCCAu+gAwIBAgICEAAwDQYJKoZIhvcNAQELBQAwgZQxCzAJBgNVBAYTAlVT
             ...
             Q0veeNzBQXg1f/JxfeA39IDIX1kiCf71tGlT
             -----END CERTIFICATE-----
-          crowdsecLapiTLSCertificateAuthorityFile: /etc/traefik/crowdsec-certs/ca.pem
           crowdsecLapiTLSCertificateBouncer: |-
             -----BEGIN CERTIFICATE-----
             MIIEHjCCAwagAwIBAgIUOBTs1eqkaAUcPplztUr2xRapvNAwDQYJKoZIhvcNAQEL
@@ -521,30 +645,31 @@ http:
             RaXAnYYUVRblS1jmePemh388hFxbmrpG2pITx8B5FMULqHoj11o2Rl0gSV6tHIHz
             N2U=
             -----END CERTIFICATE-----
-          crowdsecLapiTLSCertificateBouncerFile: /etc/traefik/crowdsec-certs/bouncer.pem
           crowdsecLapiTLSCertificateBouncerKey: |-
             -----BEGIN RSA PRIVATE KEY-----
             MIIEogIBAAKCAQEAtYQnbJqifH+ZymePylDxGGLIuxzcAUU4/ajNj+qRAdI/Ux3d
             ...
             ic5cDRo6/VD3CS3MYzyBcibaGaV34nr0G/pI+KEqkYChzk/PZRA=
             -----END RSA PRIVATE KEY-----
-          crowdsecLapiTLSCertificateBouncerKeyFile: /etc/traefik/crowdsec-certs/bouncer-key.pem
           captchaProvider: hcaptcha
           captchaSiteKey: FIXME
           captchaSecretKey: FIXME
           captchaGracePeriodSeconds: 1800
           captchaHTMLFilePath: /captcha.html
           banHTMLFilePath: /ban.html
+          traceHeadersCustomName: X-Request-ID
+          metricsUpdateIntervalSeconds: 600
 ```
 
 #### Fill variable with value of file
 
-`CrowdsecLapiTlsCertificateBouncerKey`, `CrowdsecLapiTlsCertificateBouncer`, `CrowdsecLapiTlsCertificateAuthority`, `CrowdsecCapiMachineId`, `CrowdsecCapiPassword`, `CrowdsecLapiKey`, `CaptchaSiteKey` and `CaptchaSecretKey` can be provided with the content as raw or through a file path that Traefik can read.  
+`CrowdsecLapiTlsCertificateBouncerKey`, `CrowdsecLapiTlsCertificateBouncer`, `CrowdsecLapiTlsCertificateAuthority`, `CrowdsecAppsecTlsCertificateAuthority`, `CrowdsecCapiMachineId`, `CrowdsecCapiPassword`, `CrowdsecLapiKey`, `CrowdsecAppsecKey`, `CaptchaSiteKey`, `CaptchaSecretKey` and `RedisCachePassword` can be provided with the content as raw or through a file path that Traefik can read.  
 The file variable will be used as preference if both content and file are provided for the same variable.
 
 Format is:
+
 - Content: VariableName: XXX
-- File   : VariableNameFile: /path
+- File : VariableNameFile: /path
 
 #### Authenticate with LAPI
 
@@ -552,6 +677,7 @@ You can authenticate to the LAPI either with LAPIKEY or by using client certific
 Please see below for more details on each option.
 
 #### Generate LAPI KEY
+
 You can generate a crowdsec API key for the LAPI.  
 You can follow the documentation here: [docs.crowdsec.net/docs/user_guides/lapi_mgmt](https://docs.crowdsec.net/docs/user_guides/lapi_mgmt)
 
@@ -561,24 +687,26 @@ docker exec crowdsec cscli bouncers add crowdsecBouncer
 ```
 
 This LAPI key must be set where is noted FIXME-LAPI-KEY in the docker-compose.yml
+
 ```yaml
-...
+..
 whoami:
   labels:
     - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdseclapikey=FIXME-LAPI-KEY"
     - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdseclapischeme=http"
     - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdseclapihost=crowdsec:8080"
-...
+..
 crowdsec:
   environment:
     BOUNCER_KEY_TRAEFIK: FIXME-LAPI-KEY
-...
 ```
 
 Note:
+
 > Crowdsec does not require a specific format for la LAPI-key, you may use something like FIXME-LAPI-KEY but that is not recommanded for obvious reasons
 
 You can then run all the containers:
+
 ```bash
 docker compose up -d
 ```
@@ -598,6 +726,13 @@ Set the `crowdsecLapiScheme` to https.
 Crowdsec must be listening in HTTPS for this to work.
 Please see the [tls-auth example](https://github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/blob/main/examples/tls-auth/README.md) or the official documentation: [docs.crowdsec.net/docs/local_api/tls_auth/](https://docs.crowdsec.net/docs/local_api/tls_auth/)
 
+#### Use HTTPS to communicate with the Appsec
+
+To communicate with the Appsec in HTTPS you need to either accept any certificates by setting the `crowdsecAppsecTLSInsecureVerify` to true or add the CA used by the server certificate of Crowdsec using `crowdsecAppsecTLSCertificateAuthority` or `crowdsecAppsecTLSCertificateAuthorityFile`.
+Set the `crowdsecAppsecScheme` to https.
+
+Currently AppSec does not support mTLS authentication for the AppSec Component.
+
 #### Manually add an IP to the blocklist (for testing purposes)
 
 ```bash
@@ -630,6 +765,8 @@ docker exec crowdsec cscli decisions remove --ip 10.0.0.10 -t captcha
 
 #### 10. Using Traefik with Custom Ban HTML Page [examples/custom-ban-page/README.md](https://github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/blob/main/examples/custom-ban-page/README.md)
 
+#### 11. Using Traefik with Custom Captcha Whiketkeeper[examples/custom-captcha/README.md](https://github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/blob/main/examples/custom-captcha/README.md)
+
 ### Local Mode
 
 Traefik also offers a developer mode that can be used for temporary testing of plugins not hosted on GitHub.
@@ -655,12 +792,14 @@ The source code of the plugin should be organized as follows:
 ```
 
 For local development, a `docker-compose.local.yml` is provided which reproduces the directory layout needed by Traefik.  
-This works once you have generated and filled your *LAPI-KEY* (crowdsecLapiKey), if not read above for informations.
+This works once you have generated and filled your _LAPI-KEY_ (crowdsecLapiKey), if not read above for informations.
 
 ```bash
 docker compose -f docker-compose.local.yml up -d
 ```
+
 Equivalent to
+
 ```bash
 make run_local
 ```

bouncer.go

@@ -1,5 +1,5 @@
 // Package crowdsec_bouncer_traefik_plugin implements a middleware that communicates with crowdsec.
-// It can cache results to filesystem or redis, or even ask crowdsec for every requests.
+// It can cache results in memory or using redis, or even ask crowdsec for every requests.
 package crowdsec_bouncer_traefik_plugin //nolint:revive,stylecheck
 
 import (
@@ -7,11 +7,16 @@ import (
 	"context"
 	"crypto/tls"
 	"encoding/json"
+	"errors"
 	"fmt"
+	htmltemplate "html/template"
 	"io"
+	"log/slog"
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
+	"sync/atomic"
 	"text/template"
 	"time"
 
@@ -32,6 +37,7 @@ const (
 	crowdsecLapiHeader       = "X-Api-Key"
 	crowdsecLapiRoute        = "v1/decisions"
 	crowdsecLapiStreamRoute  = "v1/decisions/stream"
+	crowdsecLapiMetricsRoute = "v1/usage-metrics"
 	crowdsecCapiHost         = "api.crowdsec.net"
 	crowdsecCapiHeader       = "Authorization"
 	crowdsecCapiLoginRoute   = "v2/watchers/login"
@@ -39,12 +45,32 @@ const (
 	cacheTimeoutKey          = "updated"
 )
 
+// ##############################################################
+// Important: traefik creates an instance of the bouncer per route.
+// We rely on globals (both here and in the memory cache) to share info between
+// routes. This means that some of the plugins parameters will only work "once"
+// and will take the values of the first middleware that was instantiated even
+// if you have different middlewares with different parameters. This design
+// makes it impossible to have multiple crowdsec implementations per cluster (unless you have multiple traefik deployments in it)
+// - updateInterval
+// - updateMaxFailure
+// - defaultDecisionTimeout
+// - redisUnreachableBlock
+// - appsecEnabled
+// - appsecHost
+// - metricsUpdateIntervalSeconds
+// - others...
+// ###################################
+
 //nolint:gochecknoglobals
 var (
 	isStartup               = true
 	isCrowdsecStreamHealthy = true
-	updateFailure           = 0
-	ticker                  chan bool
+	updateFailure           int64
+	streamTicker            chan bool
+	metricsTicker           chan bool
+	lastMetricsPush         time.Time
+	blockedRequests         int64
 )
 
 // CreateConfig creates the default plugin configuration.
@@ -58,81 +84,109 @@ type Bouncer struct {
 	name     string
 	template *template.Template
 
-	enabled                bool
-	appsecEnabled          bool
-	appsecHost             string
-	appsecFailureBlock     bool
-	crowdsecScheme         string
-	crowdsecHost           string
-	crowdsecKey            string
-	crowdsecMode           string
-	crowdsecMachineID      string
-	crowdsecPassword       string
-	crowdsecScenarios      []string
-	updateInterval         int64
-	updateMaxFailure       int
-	defaultDecisionTimeout int64
-	customHeader           string
-	crowdsecStreamRoute    string
-	crowdsecHeader         string
-	banTemplateString      string
-	clientPoolStrategy     *ip.PoolStrategy
-	serverPoolStrategy     *ip.PoolStrategy
-	httpClient             *http.Client
-	cacheClient            *cache.Client
-	captchaClient          *captcha.Client
-	log                    *logger.Log
+	enabled                 bool
+	appsecEnabled           bool
+	appsecScheme            string
+	appsecHost              string
+	appsecPath              string
+	appsecKey               string
+	appsecFailureBlock      bool
+	appsecUnreachableBlock  bool
+	appsecBodyLimit         int64
+	crowdsecScheme          string
+	crowdsecHost            string
+	crowdsecPath            string
+	crowdsecKey             string
+	crowdsecMode            string
+	crowdsecMachineID       string
+	crowdsecPassword        string
+	crowdsecScenarios       []string
+	updateInterval          int64
+	updateMaxFailure        int64
+	defaultDecisionTimeout  int64
+	remediationStatusCode   int
+	remediationCustomHeader string
+	forwardedCustomHeader   string
+	crowdsecStreamRoute     string
+	crowdsecHeader          string
+	redisUnreachableBlock   bool
+	banTemplate             *htmltemplate.Template
+	traceCustomHeader       string
+	clientPoolStrategy      *ip.PoolStrategy
+	serverPoolStrategy      *ip.PoolStrategy
+	httpClient              *http.Client
+	httpAppsecClient        *http.Client
+	cacheClient             *cache.Client
+	captchaClient           *captcha.Client
+	log                     *slog.Logger
 }
 
 // New creates the crowdsec bouncer plugin.
-func New(ctx context.Context, next http.Handler, config *configuration.Config, name string) (http.Handler, error) {
-	log := logger.New(config.LogLevel)
-	err := configuration.ValidateParams(config)
+//
+//nolint:gocyclo
+func New(_ context.Context, next http.Handler, config *configuration.Config, name string) (http.Handler, error) {
+	config.LogLevel = strings.ToUpper(config.LogLevel)
+	log := logger.NewWithFormat(config.LogLevel, config.LogFilePath, config.LogFormat)
+	err := configuration.ValidateParams(config, log)
 	if err != nil {
-		log.Error(fmt.Sprintf("New:validateParams %s", err.Error()))
+		log.Error("New:validateParams " + err.Error())
 		return nil, err
 	}
 
 	serverChecker, _ := ip.NewChecker(log, config.ForwardedHeadersTrustedIPs)
 	clientChecker, _ := ip.NewChecker(log, config.ClientTrustedIPs)
 
+	var tlsAppsecConfig *tls.Config
+	if config.CrowdsecAppsecEnabled {
+		tlsAppsecConfig, err = configuration.GetTLSConfigCrowdsec(config, log, true)
+		if config.CrowdsecAppsecScheme == "" {
+			config.CrowdsecAppsecScheme = config.CrowdsecLapiScheme
+		}
+		if err != nil {
+			log.Error("New:getTLSConfigCrowdsec fail to get tlsAppsecConfig " + err.Error())
+			return nil, err
+		}
+		apiAppsecKey, errAppsecKey := configuration.GetVariable(config, "CrowdsecAppsecKey")
+		if errAppsecKey != nil && len(tlsAppsecConfig.Certificates) == 0 {
+			log.Info("New:crowdsecLapiKey fail to get CrowdsecAppsecKey and no client certificate setup " + errAppsecKey.Error())
+		}
+		config.CrowdsecAppsecKey = apiAppsecKey
+	}
+
 	var tlsConfig *tls.Config
 	crowdsecStreamRoute := ""
 	crowdsecHeader := ""
 	if config.CrowdsecMode == configuration.AloneMode {
 		config.CrowdsecCapiMachineID, _ = configuration.GetVariable(config, "CrowdsecCapiMachineID")
 		config.CrowdsecCapiPassword, _ = configuration.GetVariable(config, "CrowdsecCapiPassword")
+		config.CrowdsecLapiScheme = configuration.HTTPS
 		config.CrowdsecLapiHost = crowdsecCapiHost
-		config.CrowdsecLapiScheme = "https"
+		config.CrowdsecLapiPath = "/"
 		config.UpdateIntervalSeconds = 7200 // 2 hours
 		crowdsecStreamRoute = crowdsecCapiStreamRoute
 		crowdsecHeader = crowdsecCapiHeader
 	} else {
 		crowdsecStreamRoute = crowdsecLapiStreamRoute
 		crowdsecHeader = crowdsecLapiHeader
-		tlsConfig, err = configuration.GetTLSConfigCrowdsec(config, log)
+		tlsConfig, err = configuration.GetTLSConfigCrowdsec(config, log, false)
 		if err != nil {
-			log.Error(fmt.Sprintf("New:getTLSConfigCrowdsec fail to get tlsConfig %s", err.Error()))
+			log.Error("New:getTLSConfigCrowdsec fail to get tlsConfig " + err.Error())
 			return nil, err
 		}
-		apiKey, errAPIKey := configuration.GetVariable(config, "CrowdsecLapiKey")
-		if errAPIKey != nil && len(tlsConfig.Certificates) == 0 {
-			log.Error(fmt.Sprintf("New:crowdsecLapiKey fail to get CrowdsecLapiKey and no client certificate setup %s", errAPIKey.Error()))
-			return nil, err
+		apiKey, errKey := configuration.GetVariable(config, "CrowdsecLapiKey")
+		if errKey != nil && len(tlsConfig.Certificates) == 0 {
+			log.Error("New:crowdsecLapiKey fail to get CrowdsecLapiKey and no client certificate setup " + errKey.Error())
+			return nil, errKey
 		}
 		config.CrowdsecLapiKey = apiKey
+		if config.CrowdsecAppsecKey == "" {
+			config.CrowdsecAppsecKey = apiKey
+		}
 	}
 
-	var banTemplateString string
+	var banTemplate *htmltemplate.Template
 	if config.BanHTMLFilePath != "" {
-		var buf bytes.Buffer
-		banTemplate, _ := configuration.GetHTMLTemplate(config.BanHTMLFilePath)
-		err = banTemplate.Execute(&buf, nil)
-		if err != nil {
-			log.Error(fmt.Sprintf("New:banTemplate is bad formatted %s", err.Error()))
-			return nil, err
-		}
-		banTemplateString = buf.String()
+		banTemplate, _ = configuration.GetHTMLTemplate(config.BanHTMLFilePath)
 	}
 
 	bouncer := &Bouncer{
@@ -140,25 +194,35 @@ func New(ctx context.Context, next http.Handler, config *configuration.Config, n
 		name:     name,
 		template: template.New("CrowdsecBouncer").Delims("[[", "]]"),
 
-		enabled:                config.Enabled,
-		crowdsecMode:           config.CrowdsecMode,
-		appsecEnabled:          config.CrowdsecAppsecEnabled,
-		appsecHost:             config.CrowdsecAppsecHost,
-		appsecFailureBlock:     config.CrowdsecAppsecFailureBlock,
-		crowdsecScheme:         config.CrowdsecLapiScheme,
-		crowdsecHost:           config.CrowdsecLapiHost,
-		crowdsecKey:            config.CrowdsecLapiKey,
-		crowdsecMachineID:      config.CrowdsecCapiMachineID,
-		crowdsecPassword:       config.CrowdsecCapiPassword,
-		crowdsecScenarios:      config.CrowdsecCapiScenarios,
-		updateInterval:         config.UpdateIntervalSeconds,
-		updateMaxFailure:       config.UpdateMaxFailure,
-		customHeader:           config.ForwardedHeadersCustomName,
-		defaultDecisionTimeout: config.DefaultDecisionSeconds,
-		banTemplateString:      banTemplateString,
-		crowdsecStreamRoute:    crowdsecStreamRoute,
-		crowdsecHeader:         crowdsecHeader,
-		log:                    log,
+		enabled:                 config.Enabled,
+		crowdsecMode:            config.CrowdsecMode,
+		appsecEnabled:           config.CrowdsecAppsecEnabled,
+		appsecScheme:            config.CrowdsecAppsecScheme,
+		appsecHost:              config.CrowdsecAppsecHost,
+		appsecPath:              config.CrowdsecAppsecPath,
+		appsecKey:               config.CrowdsecAppsecKey,
+		appsecFailureBlock:      config.CrowdsecAppsecFailureBlock,
+		appsecUnreachableBlock:  config.CrowdsecAppsecUnreachableBlock,
+		appsecBodyLimit:         config.CrowdsecAppsecBodyLimit,
+		crowdsecScheme:          config.CrowdsecLapiScheme,
+		crowdsecHost:            config.CrowdsecLapiHost,
+		crowdsecPath:            config.CrowdsecLapiPath,
+		crowdsecKey:             config.CrowdsecLapiKey,
+		crowdsecMachineID:       config.CrowdsecCapiMachineID,
+		crowdsecPassword:        config.CrowdsecCapiPassword,
+		crowdsecScenarios:       config.CrowdsecCapiScenarios,
+		updateInterval:          config.UpdateIntervalSeconds,
+		updateMaxFailure:        config.UpdateMaxFailure,
+		remediationCustomHeader: config.RemediationHeadersCustomName,
+		forwardedCustomHeader:   config.ForwardedHeadersCustomName,
+		defaultDecisionTimeout:  config.DefaultDecisionSeconds,
+		remediationStatusCode:   config.RemediationStatusCode,
+		redisUnreachableBlock:   config.RedisCacheUnreachableBlock,
+		banTemplate:             banTemplate,
+		traceCustomHeader:       config.TraceHeadersCustomName,
+		crowdsecStreamRoute:     crowdsecStreamRoute,
+		crowdsecHeader:          crowdsecHeader,
+		log:                     log,
 		serverPoolStrategy: &ip.PoolStrategy{
 			Checker: serverChecker,
 		},
@@ -173,6 +237,14 @@ func New(ctx context.Context, next http.Handler, config *configuration.Config, n
 			},
 			Timeout: time.Duration(config.HTTPTimeoutSeconds) * time.Second,
 		},
+		httpAppsecClient: &http.Client{
+			Transport: &http.Transport{
+				MaxIdleConns:    10,
+				IdleConnTimeout: 30 * time.Second,
+				TLSClientConfig: tlsAppsecConfig,
+			},
+			Timeout: time.Duration(config.HTTPTimeoutSeconds) * time.Second,
+		},
 		cacheClient:   &cache.Client{},
 		captchaClient: &captcha.Client{},
 	}
@@ -197,53 +269,69 @@ func New(ctx context.Context, next http.Handler, config *configuration.Config, n
 			Timeout:   time.Duration(config.HTTPTimeoutSeconds) * time.Second,
 		},
 		config.CaptchaProvider,
+		config.CaptchaCustomJsURL,
+		config.CaptchaCustomKey,
+		config.CaptchaCustomResponse,
+		config.CaptchaCustomValidateURL,
 		config.CaptchaSiteKey,
 		config.CaptchaSecretKey,
+		config.RemediationHeadersCustomName,
 		config.CaptchaHTMLFilePath,
 		config.CaptchaGracePeriodSeconds,
 	)
 	if err != nil {
+		log.Error("CaptchaClient not valid " + err.Error())
 		return nil, err
 	}
 
-	if (config.CrowdsecMode == configuration.StreamMode || config.CrowdsecMode == configuration.AloneMode) && ticker == nil {
+	if (config.CrowdsecMode == configuration.StreamMode || config.CrowdsecMode == configuration.AloneMode) && streamTicker == nil {
 		if config.CrowdsecMode == configuration.AloneMode {
 			if err := getToken(bouncer); err != nil {
-				bouncer.log.Error(fmt.Sprintf("New:getToken %s", err.Error()))
+				bouncer.log.Error("New:getToken " + err.Error())
 				return nil, err
 			}
 		}
 		handleStreamTicker(bouncer)
 		isStartup = false
-		ticker = startTicker(config, log, func() {
+		streamTicker = startTicker("stream", config.UpdateIntervalSeconds, log, func() {
 			handleStreamTicker(bouncer)
 		})
 	}
-	bouncer.log.Debug(fmt.Sprintf("New initialized mode:%s", config.CrowdsecMode))
+
+	// Start metrics ticker if not already running
+	if metricsTicker == nil && config.MetricsUpdateIntervalSeconds > 0 {
+		lastMetricsPush = time.Now() // Initialize lastMetricsPush when starting the metrics ticker
+		handleMetricsTicker(bouncer)
+		metricsTicker = startTicker("metrics", config.MetricsUpdateIntervalSeconds, log, func() {
+			handleMetricsTicker(bouncer)
+		})
+	}
+
+	bouncer.log.Debug("New initialized mode:" + config.CrowdsecMode)
 
 	return bouncer, nil
 }
 
 // ServeHTTP principal function of plugin.
 //
-//nolint:nestif
+//nolint:nestif,gocyclo
 func (bouncer *Bouncer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 	if !bouncer.enabled {
 		bouncer.next.ServeHTTP(rw, req)
 		return
 	}
 
-	// Here we check for the trusted IPs in the customHeader
-	remoteIP, err := ip.GetRemoteIP(req, bouncer.serverPoolStrategy, bouncer.customHeader)
+	// Here we check for the trusted IPs in the forwardedCustomHeader
+	remoteIP, err := ip.GetRemoteIP(req, bouncer.serverPoolStrategy, bouncer.forwardedCustomHeader)
 	if err != nil {
 		bouncer.log.Error(fmt.Sprintf("ServeHTTP:getRemoteIp ip:%s %s", remoteIP, err.Error()))
-		handleBanServeHTTP(bouncer, rw)
+		bouncer.handleBanServeHTTP(rw, req, remoteIP, configuration.ReasonTECH)
 		return
 	}
 	isTrusted, err := bouncer.clientPoolStrategy.Checker.Contains(remoteIP)
 	if err != nil {
 		bouncer.log.Error(fmt.Sprintf("ServeHTTP:checkerContains ip:%s %s", remoteIP, err.Error()))
-		handleBanServeHTTP(bouncer, rw)
+		bouncer.handleBanServeHTTP(rw, req, remoteIP, configuration.ReasonTECH)
 		return
 	}
 	// if our IP is in the trusted list we bypass the next checks
@@ -254,7 +342,7 @@ func (bouncer *Bouncer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 	}
 
 	if bouncer.crowdsecMode == configuration.AppsecMode {
-		handleNextServeHTTP(bouncer, remoteIP, rw, req)
+		bouncer.handleNextServeHTTP(rw, req, remoteIP)
 		return
 	}
 
@@ -264,17 +352,22 @@ func (bouncer *Bouncer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 		if cacheErr != nil {
 			cacheErrString := cacheErr.Error()
 			bouncer.log.Debug(fmt.Sprintf("ServeHTTP:Get ip:%s isBanned:false %s", remoteIP, cacheErrString))
+			if !bouncer.redisUnreachableBlock && cacheErrString == cache.CacheUnreachable {
+				bouncer.log.Error(fmt.Sprintf("ServeHTTP:Get ip:%s redisUnreachable=true", remoteIP))
+				bouncer.handleNextServeHTTP(rw, req, remoteIP)
+				return
+			}
 			if cacheErrString != cache.CacheMiss {
 				bouncer.log.Error(fmt.Sprintf("ServeHTTP:Get ip:%s %s", remoteIP, cacheErrString))
-				handleBanServeHTTP(bouncer, rw)
+				bouncer.handleBanServeHTTP(rw, req, remoteIP, configuration.ReasonTECH)
 				return
 			}
 		} else {
 			bouncer.log.Debug(fmt.Sprintf("ServeHTTP ip:%s cache:hit isBanned:%v", remoteIP, value))
 			if value == cache.NoBannedValue {
-				handleNextServeHTTP(bouncer, remoteIP, rw, req)
+				bouncer.handleNextServeHTTP(rw, req, remoteIP)
 			} else {
-				handleRemediationServeHTTP(bouncer, remoteIP, value, rw, req)
+				bouncer.handleRemediationServeHTTP(rw, req, remoteIP, value)
 			}
 			return
 		}
@@ -283,18 +376,21 @@ 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 == configuration.StreamMode || bouncer.crowdsecMode == configuration.AloneMode {
 		if isCrowdsecStreamHealthy {
-			handleNextServeHTTP(bouncer, remoteIP, rw, req)
+			bouncer.handleNextServeHTTP(rw, req, remoteIP)
 		} else {
 			bouncer.log.Debug(fmt.Sprintf("ServeHTTP isCrowdsecStreamHealthy:false ip:%s updateFailure:%d", remoteIP, updateFailure))
-			handleBanServeHTTP(bouncer, rw)
+			bouncer.handleBanServeHTTP(rw, req, remoteIP, configuration.ReasonTECH)
 		}
 	} else {
 		value, err := handleNoStreamCache(bouncer, remoteIP)
+		if err != nil {
+			bouncer.log.Debug("handleNoStreamCache:crowdsecQuery " + err.Error())
+		}
 		if value == cache.NoBannedValue {
-			handleNextServeHTTP(bouncer, remoteIP, rw, req)
+			bouncer.handleNextServeHTTP(rw, req, remoteIP)
 		} else {
 			bouncer.log.Debug(fmt.Sprintf("ServeHTTP:handleNoStreamCache ip:%s isBanned:%v %s", remoteIP, value, err.Error()))
-			handleRemediationServeHTTP(bouncer, remoteIP, value, rw, req)
+			bouncer.handleRemediationServeHTTP(rw, req, remoteIP, value)
 		}
 	}
 }
@@ -328,34 +424,61 @@ type Login struct {
 }
 
 // To append Headers we need to call rw.WriteHeader after set any header.
-func handleBanServeHTTP(bouncer *Bouncer, rw http.ResponseWriter) {
-	if bouncer.banTemplateString == "" {
-		rw.WriteHeader(http.StatusForbidden)
+func (bouncer *Bouncer) handleBanServeHTTP(rw http.ResponseWriter, req *http.Request, remoteIP, reason string) {
+	atomic.AddInt64(&blockedRequests, 1)
+
+	if bouncer.remediationCustomHeader != "" {
+		rw.Header().Set(bouncer.remediationCustomHeader, "ban")
+	}
+	if bouncer.banTemplate == nil {
+		rw.WriteHeader(bouncer.remediationStatusCode)
 		return
 	}
 	rw.Header().Set("Content-Type", "text/html; charset=utf-8")
-	rw.WriteHeader(http.StatusForbidden)
-	fmt.Fprint(rw, bouncer.banTemplateString)
+	rw.WriteHeader(bouncer.remediationStatusCode)
+
+	if req.Method == http.MethodHead {
+		return
+	}
+	templateData := map[string]string{
+		"RemediationReason": reason,
+		"ClientIP":          remoteIP,
+	}
+
+	if bouncer.traceCustomHeader != "" {
+		headerVal := req.Header.Get(bouncer.traceCustomHeader)
+
+		if headerVal != "" {
+			templateData["TraceID"] = headerVal
+		}
+	}
+
+	err := bouncer.banTemplate.Execute(rw, templateData)
+
+	if err != nil {
+		bouncer.log.Warn("handleBanServeHTTP could not write template to ResponseWriter: " + err.Error())
+	}
 }
 
-func handleRemediationServeHTTP(bouncer *Bouncer, remoteIP, remediation string, rw http.ResponseWriter, req *http.Request) {
+func (bouncer *Bouncer) handleRemediationServeHTTP(rw http.ResponseWriter, req *http.Request, remoteIP, remediation string) {
 	bouncer.log.Debug(fmt.Sprintf("handleRemediationServeHTTP ip:%s remediation:%s", remoteIP, remediation))
-	if bouncer.captchaClient.Valid && remediation == cache.CaptchaValue {
+	if bouncer.captchaClient.Valid && remediation == cache.CaptchaValue && req.Method != http.MethodHead {
 		if bouncer.captchaClient.Check(remoteIP) {
-			handleNextServeHTTP(bouncer, remoteIP, rw, req)
+			bouncer.handleNextServeHTTP(rw, req, remoteIP)
 			return
 		}
+		atomic.AddInt64(&blockedRequests, 1) //  If we serve a captcha that should count as a dropped request.
 		bouncer.captchaClient.ServeHTTP(rw, req, remoteIP)
 		return
 	}
-	handleBanServeHTTP(bouncer, rw)
+	bouncer.handleBanServeHTTP(rw, req, remoteIP, configuration.ReasonLAPI)
 }
 
-func handleNextServeHTTP(bouncer *Bouncer, remoteIP string, rw http.ResponseWriter, req *http.Request) {
+func (bouncer *Bouncer) handleNextServeHTTP(rw http.ResponseWriter, req *http.Request, remoteIP string) {
 	if bouncer.appsecEnabled {
 		if err := appsecQuery(bouncer, remoteIP, req); err != nil {
 			bouncer.log.Debug(fmt.Sprintf("handleNextServeHTTP ip:%s isWaf:true %s", remoteIP, err.Error()))
-			handleBanServeHTTP(bouncer, rw)
+			bouncer.handleBanServeHTTP(rw, req, remoteIP, configuration.ReasonAPPSEC)
 			return
 		}
 	}
@@ -364,7 +487,7 @@ func handleNextServeHTTP(bouncer *Bouncer, remoteIP string, rw http.ResponseWrit
 
 func handleStreamTicker(bouncer *Bouncer) {
 	if err := handleStreamCache(bouncer); err != nil {
-		bouncer.log.Debug(fmt.Sprintf("handleStreamTicker updateFailure:%d isCrowdsecStreamHealthy:%t %s", updateFailure, isCrowdsecStreamHealthy, err.Error()))
+		bouncer.log.Warn(fmt.Sprintf("handleStreamTicker updateFailure:%d isCrowdsecStreamHealthy:%t %s", updateFailure, isCrowdsecStreamHealthy, err.Error()))
 		if bouncer.updateMaxFailure != -1 && updateFailure >= bouncer.updateMaxFailure && isCrowdsecStreamHealthy {
 			isCrowdsecStreamHealthy = false
 			bouncer.log.Error(fmt.Sprintf("handleStreamTicker:error updateFailure:%d %s", updateFailure, err.Error()))
@@ -376,11 +499,17 @@ func handleStreamTicker(bouncer *Bouncer) {
 	}
 }
 
-func startTicker(config *configuration.Config, log *logger.Log, work func()) chan bool {
-	ticker := time.NewTicker(time.Duration(config.UpdateIntervalSeconds) * time.Second)
+func handleMetricsTicker(bouncer *Bouncer) {
+	if err := reportMetrics(bouncer); err != nil {
+		bouncer.log.Error("handleMetricsTicker:reportMetrics " + err.Error())
+	}
+}
+
+func startTicker(name string, updateInterval int64, log *slog.Logger, work func()) chan bool {
+	ticker := time.NewTicker(time.Duration(updateInterval) * time.Second)
 	stop := make(chan bool, 1)
 	go func() {
-		defer log.Debug("ticker:stopped")
+		defer log.Debug(name + "_ticker:stopped")
 		for {
 			select {
 			case <-ticker.C:
@@ -399,10 +528,10 @@ func handleNoStreamCache(bouncer *Bouncer, remoteIP string) (string, error) {
 	routeURL := url.URL{
 		Scheme:   bouncer.crowdsecScheme,
 		Host:     bouncer.crowdsecHost,
-		Path:     crowdsecLapiRoute,
-		RawQuery: fmt.Sprintf("ip=%v&banned=true", remoteIP),
+		Path:     bouncer.crowdsecPath + crowdsecLapiRoute,
+		RawQuery: fmt.Sprintf("ip=%v", remoteIP),
 	}
-	body, err := crowdsecQuery(bouncer, routeURL.String(), false)
+	body, err := crowdsecQuery(bouncer, routeURL.String(), nil)
 	if err != nil {
 		return cache.BannedValue, err
 	}
@@ -443,16 +572,16 @@ func handleNoStreamCache(bouncer *Bouncer, remoteIP string) (string, error) {
 	case "captcha":
 		value = cache.CaptchaValue
 	default:
-		bouncer.log.Debug(fmt.Sprintf("handleStreamCache:unknownType %s", decision.Type))
+		bouncer.log.Info("handleStreamCache:unknownType " + decision.Type)
 	}
-	if isLiveMode {
+	if isLiveMode && bouncer.defaultDecisionTimeout > 0 {
 		durationSecond := int64(duration.Seconds())
 		if bouncer.defaultDecisionTimeout < durationSecond {
 			durationSecond = bouncer.defaultDecisionTimeout
 		}
 		bouncer.cacheClient.Set(remoteIP, value, durationSecond)
 	}
-	return value, fmt.Errorf("handleNoStreamCache:banned")
+	return value, errors.New("handleNoStreamCache:banned")
 }
 
 func getToken(bouncer *Bouncer) error {
@@ -461,7 +590,16 @@ func getToken(bouncer *Bouncer) error {
 		Host:   bouncer.crowdsecHost,
 		Path:   crowdsecCapiLoginRoute,
 	}
-	body, err := crowdsecQuery(bouncer, loginURL.String(), true)
+
+	// Move the login-specific payload here
+	loginData := []byte(fmt.Sprintf(
+		`{"machine_id": "%v","password": "%v","scenarios": ["%v"]}`,
+		bouncer.crowdsecMachineID,
+		bouncer.crowdsecPassword,
+		strings.Join(bouncer.crowdsecScenarios, `","`),
+	))
+
+	body, err := crowdsecQuery(bouncer, loginURL.String(), loginData)
 	if err != nil {
 		return err
 	}
@@ -470,11 +608,11 @@ func getToken(bouncer *Bouncer) error {
 	if err != nil {
 		return fmt.Errorf("getToken:parsingBody %w", err)
 	}
-	if login.Code == 200 && len(login.Token) > 0 {
+	if login.Code == http.StatusOK && len(login.Token) > 0 {
 		bouncer.crowdsecKey = login.Token
-		bouncer.log.Debug(fmt.Sprintf("getToken statusCode:%d", login.Code))
 		return nil
 	}
+	bouncer.log.Warn(fmt.Sprintf("getToken statusCode:%d", login.Code))
 	return fmt.Errorf("getToken statusCode:%d", login.Code)
 }
 
@@ -495,10 +633,10 @@ func handleStreamCache(bouncer *Bouncer) error {
 	streamRouteURL := url.URL{
 		Scheme:   bouncer.crowdsecScheme,
 		Host:     bouncer.crowdsecHost,
-		Path:     bouncer.crowdsecStreamRoute,
+		Path:     bouncer.crowdsecPath + bouncer.crowdsecStreamRoute,
 		RawQuery: fmt.Sprintf("startup=%t", !isCrowdsecStreamHealthy || isStartup),
 	}
-	body, err := crowdsecQuery(bouncer, streamRouteURL.String(), false)
+	body, err := crowdsecQuery(bouncer, streamRouteURL.String(), nil)
 	if err != nil {
 		return err
 	}
@@ -517,7 +655,7 @@ func handleStreamCache(bouncer *Bouncer) error {
 			case "captcha":
 				value = cache.CaptchaValue
 			default:
-				bouncer.log.Debug(fmt.Sprintf("handleStreamCache:unknownType %s", decision.Type))
+				bouncer.log.Info("handleStreamCache:unknownType " + decision.Type)
 			}
 			bouncer.cacheClient.Set(decision.Value, value, int64(duration.Seconds()))
 		}
@@ -525,44 +663,43 @@ func handleStreamCache(bouncer *Bouncer) error {
 	for _, decision := range stream.Deleted {
 		bouncer.cacheClient.Delete(decision.Value)
 	}
-	bouncer.log.Debug("handleStreamCache:updated")
+	bouncer.log.Info("handleStreamCache:updated")
 	return nil
 }
 
-func crowdsecQuery(bouncer *Bouncer, stringURL string, isPost bool) ([]byte, error) {
+func crowdsecQuery(bouncer *Bouncer, stringURL string, data []byte) ([]byte, error) {
 	var req *http.Request
-	if isPost {
-		data := []byte(fmt.Sprintf(
-			`{"machine_id": "%v","password": "%v","scenarios": ["%v"]}`,
-			bouncer.crowdsecMachineID,
-			bouncer.crowdsecPassword,
-			strings.Join(bouncer.crowdsecScenarios, `","`),
-		))
+	if len(data) > 0 {
 		req, _ = http.NewRequest(http.MethodPost, stringURL, bytes.NewBuffer(data))
 	} else {
 		req, _ = http.NewRequest(http.MethodGet, stringURL, nil)
 	}
 	req.Header.Add(bouncer.crowdsecHeader, bouncer.crowdsecKey)
+	req.Header.Add("User-Agent", "Crowdsec-Bouncer-Traefik-Plugin/"+pluginVersion)
+
 	res, err := bouncer.httpClient.Do(req)
 	if err != nil {
-		return nil, fmt.Errorf("crowdsecQuery url:%s %w", stringURL, err)
+		return nil, fmt.Errorf("crowdsecQuery:unreachable url:%s %w", stringURL, err)
 	}
 	defer func() {
 		if err = res.Body.Close(); err != nil {
-			bouncer.log.Error(fmt.Sprintf("crowdsecQuery:closeBody %s", err.Error()))
+			bouncer.log.Error("crowdsecQuery:closeBody " + err.Error())
 		}
 	}()
 	if res.StatusCode == http.StatusUnauthorized && bouncer.crowdsecMode == configuration.AloneMode {
 		if errToken := getToken(bouncer); errToken != nil {
 			return nil, fmt.Errorf("crowdsecQuery:renewToken url:%s %w", stringURL, errToken)
 		}
-		return crowdsecQuery(bouncer, stringURL, false)
+		return crowdsecQuery(bouncer, stringURL, nil)
 	}
-	if res.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf("crowdsecQuery url:%s, statusCode:%d", stringURL, res.StatusCode)
-	}
-	body, err := io.ReadAll(res.Body)
 
+	// Check if the status code starts with 2
+	statusStr := strconv.Itoa(res.StatusCode)
+	if len(statusStr) < 1 || statusStr[0] != '2' {
+		return nil, fmt.Errorf("crowdsecQuery method:%s url:%s, statusCode:%d (expected: 2xx)", req.Method, stringURL, res.StatusCode)
+	}
+
+	body, err := io.ReadAll(res.Body)
 	if err != nil {
 		return nil, fmt.Errorf("crowdsecQuery:readBody %w", err)
 	}
@@ -571,17 +708,21 @@ func crowdsecQuery(bouncer *Bouncer, stringURL string, isPost bool) ([]byte, err
 
 func appsecQuery(bouncer *Bouncer, ip string, httpReq *http.Request) error {
 	routeURL := url.URL{
-		Scheme: bouncer.crowdsecScheme,
+		Scheme: bouncer.appsecScheme,
 		Host:   bouncer.appsecHost,
-		Path:   "/",
+		Path:   bouncer.appsecPath,
 	}
 	var req *http.Request
-	if httpReq.Body != nil && httpReq.ContentLength > 0 {
-		bodyBytes, err := io.ReadAll(httpReq.Body)
+	if bouncer.appsecBodyLimit > 0 && httpReq.Body != nil {
+		var bodyBuffer bytes.Buffer
+		limitedReader := io.LimitReader(httpReq.Body, bouncer.appsecBodyLimit)
+		teeReader := io.TeeReader(limitedReader, &bodyBuffer)
+		bodyBytes, err := io.ReadAll(teeReader)
 		if err != nil {
 			return fmt.Errorf("appsecQuery:GetBody %w", err)
 		}
-		httpReq.Body = io.NopCloser(bytes.NewBuffer(bodyBytes))
+		// Conserve body intact after reading it for other middlewares and service
+		httpReq.Body = io.NopCloser(io.MultiReader(&bodyBuffer, httpReq.Body))
 		req, _ = http.NewRequest(http.MethodPost, routeURL.String(), bytes.NewBuffer(bodyBytes))
 	} else {
 		req, _ = http.NewRequest(http.MethodGet, routeURL.String(), nil)
@@ -592,26 +733,30 @@ func appsecQuery(bouncer *Bouncer, ip string, httpReq *http.Request) error {
 			req.Header.Add(key, value)
 		}
 	}
-	req.Header.Set(crowdsecAppsecHeader, bouncer.crowdsecKey)
+	req.Header.Set(crowdsecAppsecHeader, bouncer.appsecKey)
 	req.Header.Set(crowdsecAppsecIPHeader, ip)
 	req.Header.Set(crowdsecAppsecVerbHeader, httpReq.Method)
 	req.Header.Set(crowdsecAppsecHostHeader, httpReq.Host)
 	req.Header.Set(crowdsecAppsecURIHeader, httpReq.URL.String())
 	req.Header.Set(crowdsecAppsecUserAgent, httpReq.Header.Get("User-Agent"))
 
-	res, err := bouncer.httpClient.Do(req)
+	res, err := bouncer.httpAppsecClient.Do(req)
 	if err != nil {
-		return fmt.Errorf("appsecQuery %w", err)
+		bouncer.log.Error("appsecQuery:unreachable")
+		if bouncer.appsecUnreachableBlock {
+			return fmt.Errorf("appsecQuery:unreachable %w", err)
+		}
+		return nil
 	}
 	defer func() {
 		if err = res.Body.Close(); err != nil {
-			bouncer.log.Error(fmt.Sprintf("appsecQuery:closeBody %s", err.Error()))
+			bouncer.log.Error("appsecQuery:closeBody " + err.Error())
 		}
 	}()
 	if res.StatusCode == http.StatusInternalServerError {
-		bouncer.log.Debug("crowdsecQuery statusCode:500")
+		bouncer.log.Info("appsecQuery:failure")
 		if bouncer.appsecFailureBlock {
-			return fmt.Errorf("appsecQuery statusCode:%d", res.StatusCode)
+			return errors.New("appsecQuery statusCode:500")
 		}
 		return nil
 	}
@@ -624,3 +769,65 @@ func appsecQuery(bouncer *Bouncer, ip string, httpReq *http.Request) error {
 	}
 	return nil
 }
+
+func reportMetrics(bouncer *Bouncer) error {
+	now := time.Now()
+	currentCount := atomic.LoadInt64(&blockedRequests)
+	windowSizeSeconds := int(now.Sub(lastMetricsPush).Seconds())
+
+	bouncer.log.Debug(fmt.Sprintf("reportMetrics: blocked_requests=%d window_size=%ds", currentCount, windowSizeSeconds))
+
+	metrics := map[string]interface{}{
+		"remediation_components": []map[string]interface{}{
+			{
+				"version": pluginVersion,
+				"type":    "bouncer",
+				"name":    "traefik_plugin",
+				"metrics": []map[string]interface{}{
+					{
+						"items": []map[string]interface{}{
+							{
+								"name":  "dropped",
+								"value": currentCount,
+								"unit":  "request",
+								"labels": map[string]string{
+									"type": "traefik_plugin",
+								},
+							},
+						},
+						"meta": map[string]interface{}{
+							"window_size_seconds": windowSizeSeconds,
+							"utc_now_timestamp":   now.Unix(),
+						},
+					},
+				},
+				"utc_startup_timestamp": time.Now().Unix(),
+				"feature_flags":         []string{},
+				"os": map[string]string{
+					"name":    "unknown",
+					"version": "unknown",
+				},
+			},
+		},
+	}
+
+	data, err := json.Marshal(metrics)
+	if err != nil {
+		return fmt.Errorf("reportMetrics:marshal %w", err)
+	}
+
+	metricsURL := url.URL{
+		Scheme: bouncer.crowdsecScheme,
+		Host:   bouncer.crowdsecHost,
+		Path:   bouncer.crowdsecPath + crowdsecLapiMetricsRoute,
+	}
+
+	_, err = crowdsecQuery(bouncer, metricsURL.String(), data)
+	if err != nil {
+		return fmt.Errorf("reportMetrics:query %w", err)
+	}
+
+	atomic.StoreInt64(&blockedRequests, 0)
+	lastMetricsPush = now
+	return nil
+}

bouncer_logging_test.go

@@ -0,0 +1,320 @@
+package crowdsec_bouncer_traefik_plugin //nolint:revive,stylecheck
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/configuration"
+)
+
+// getTestConfig returns a minimal valid configuration for testing.
+// Override specific fields by modifying the returned config.
+func getTestConfig() *configuration.Config {
+	return &configuration.Config{
+		Enabled:                              true,
+		LogLevel:                             "INFO",
+		LogFormat:                            "common",
+		LogFilePath:                          "",
+		CrowdsecMode:                         "none",
+		CrowdsecLapiKey:                      "test-key",
+		CrowdsecLapiHost:                     "localhost",
+		CrowdsecLapiScheme:                   "http",
+		UpdateIntervalSeconds:                60,
+		DefaultDecisionSeconds:               60,
+		HTTPTimeoutSeconds:                   10,
+		ForwardedHeadersTrustedIPs:           []string{"127.0.0.1"},
+		ForwardedHeadersCustomName:           "",
+		RemediationStatusCode:                403,
+		BanHTMLFilePath:                      "",
+		RemediationHeadersCustomName:         "",
+		CaptchaProvider:                      "",
+		CaptchaSiteKey:                       "",
+		CaptchaSecretKey:                     "",
+		CaptchaGracePeriodSeconds:            1,
+		CaptchaHTMLFilePath:                  "",
+		RedisCacheEnabled:                    false,
+		RedisCacheHost:                       "",
+		RedisCachePassword:                   "",
+		RedisCacheDatabase:                   "",
+		RedisCacheUnreachableBlock:           false,
+		CrowdsecAppsecEnabled:                false,
+		CrowdsecAppsecHost:                   "",
+		CrowdsecAppsecPath:                   "",
+		CrowdsecAppsecFailureBlock:           false,
+		CrowdsecAppsecUnreachableBlock:       false,
+		CrowdsecLapiTLSInsecureVerify:        true,
+		CrowdsecLapiTLSCertificateBouncer:    "",
+		CrowdsecLapiTLSCertificateBouncerKey: "",
+		CrowdsecCapiMachineID:                "",
+		CrowdsecCapiPassword:                 "",
+		CrowdsecCapiScenarios:                []string{},
+		UpdateMaxFailure:                     0,
+		MetricsUpdateIntervalSeconds:         0,
+	}
+}
+
+// Helper function to create and execute a bouncer request for testing
+func createAndExecuteBouncerRequest(t *testing.T, config *configuration.Config) {
+	t.Helper()
+
+	// Create a mock next handler
+	nextHandler := http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write([]byte("OK"))
+	})
+
+	// Create the bouncer plugin (this will initialize the logger with file output)
+	bouncerHandler, err := New(context.Background(), nextHandler, config, "test-bouncer")
+	if err != nil {
+		t.Fatalf("Failed to create bouncer: %v", err)
+	}
+
+	// Create a test request to trigger logging
+	req := httptest.NewRequest(http.MethodGet, "http://example.com/test", nil)
+	req.RemoteAddr = "192.168.1.100:12345" // Use a non-trusted IP to trigger logging
+	rw := httptest.NewRecorder()
+
+	// Process the request (this should generate log entries)
+	bouncerHandler.ServeHTTP(rw, req)
+
+	// Give a moment for log writes to complete
+	time.Sleep(100 * time.Millisecond)
+}
+
+// Helper function to parse log file and extract found levels
+func parseLogFileAndExtractLevels(t *testing.T, logFile string) map[string]bool {
+	t.Helper()
+
+	// Verify the log file was created and contains entries
+	if _, statErr := os.Stat(logFile); os.IsNotExist(statErr) {
+		t.Fatalf("Log file was not created: %s", logFile)
+	}
+
+	// Read the log file content
+	// #nosec G304 - logFile is a test-generated temporary file path
+	logContent, err := os.ReadFile(logFile)
+	if err != nil {
+		t.Fatalf("Failed to read log file: %v", err)
+	}
+
+	logString := string(logContent)
+	if len(logString) == 0 {
+		return make(map[string]bool) // Return empty map for empty log files
+	}
+
+	// Parse and verify JSON log entries
+	lines := strings.Split(strings.TrimSpace(logString), "\n")
+	foundLevels := make(map[string]bool)
+
+	for _, line := range lines {
+		if strings.TrimSpace(line) == "" {
+			continue
+		}
+
+		var logEntry map[string]interface{}
+		if err := json.Unmarshal([]byte(line), &logEntry); err != nil {
+			t.Errorf("Invalid JSON log entry: %s, error: %v", line, err)
+			continue
+		}
+
+		// Verify required fields
+		validateLogEntry(t, logEntry)
+
+		// Track log levels we've seen
+		if level, ok := logEntry["level"].(string); ok {
+			foundLevels[level] = true
+		}
+	}
+
+	return foundLevels
+}
+
+// Helper function to validate log entry structure
+func validateLogEntry(t *testing.T, logEntry map[string]interface{}) {
+	t.Helper()
+
+	if logEntry["time"] == nil {
+		t.Error("Log entry missing 'time' field")
+	}
+	if logEntry["level"] == nil {
+		t.Error("Log entry missing 'level' field")
+	}
+	if logEntry["msg"] == nil {
+		t.Error("Log entry missing 'msg' field")
+	}
+	if logEntry["component"] != "CrowdsecBouncerTraefikPlugin" {
+		t.Errorf("Expected component 'CrowdsecBouncerTraefikPlugin', got %v", logEntry["component"])
+	}
+}
+
+// Helper function to verify expected and forbidden log levels
+func verifyLogLevels(t *testing.T, foundLevels map[string]bool, expectedLevels, forbiddenLevels []string, logLevel string) {
+	t.Helper()
+
+	// Handle case where no logs are expected
+	if len(expectedLevels) == 0 {
+		if len(foundLevels) > 0 {
+			t.Errorf("Expected no logs at %s level, but found: %v", logLevel, foundLevels)
+		}
+	} else {
+		// Verify we got some log entries
+		if len(foundLevels) == 0 {
+			t.Fatal("No valid log entries found")
+		}
+
+		// Verify expected levels are present
+		for _, expectedLevel := range expectedLevels {
+			if !foundLevels[expectedLevel] {
+				t.Errorf("Expected to find %s level logs, but didn't. Found levels: %v", expectedLevel, foundLevels)
+			}
+		}
+	}
+
+	// Verify forbidden levels are NOT present
+	for _, forbiddenLevel := range forbiddenLevels {
+		if foundLevels[forbiddenLevel] {
+			t.Errorf("Found forbidden %s level logs at %s level. Found levels: %v", forbiddenLevel, logLevel, foundLevels)
+		}
+	}
+}
+
+func TestBouncerFileLoggingLevels(t *testing.T) {
+	tests := []struct {
+		name            string
+		logLevel        string
+		expectedLevels  []string // Levels that should appear
+		forbiddenLevels []string // Levels that should NOT appear
+	}{
+		{
+			name:            "DEBUG level should show DEBUG only",
+			logLevel:        "DEBUG",
+			expectedLevels:  []string{"DEBUG"},
+			forbiddenLevels: []string{},
+		},
+		{
+			name:            "INFO level should show no logs (bouncer doesn't generate INFO during normal operation)",
+			logLevel:        "INFO",
+			expectedLevels:  []string{}, // No logs expected for normal operation
+			forbiddenLevels: []string{"DEBUG"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Create temporary directory for log file
+			tmpDir := t.TempDir()
+			logFile := filepath.Join(tmpDir, "bouncer.log")
+
+			// Get test config and override specific fields
+			config := getTestConfig()
+			config.LogLevel = tt.logLevel
+			config.LogFormat = "json" // Use JSON format for easier parsing
+			config.LogFilePath = logFile
+
+			// Create and execute bouncer request
+			createAndExecuteBouncerRequest(t, config)
+
+			// Parse log file and extract found levels
+			foundLevels := parseLogFileAndExtractLevels(t, logFile)
+
+			// Handle empty log files for higher log levels (expected behavior)
+			if len(foundLevels) == 0 && len(tt.expectedLevels) > 0 {
+				t.Fatalf("Expected log entries but log file is empty for level %s", tt.logLevel)
+			}
+			if len(foundLevels) == 0 {
+				// Empty file is expected for this log level
+				t.Logf("LogLevel %s: No logs generated (expected behavior)", tt.logLevel)
+				return
+			}
+
+			// Verify expected and forbidden log levels
+			verifyLogLevels(t, foundLevels, tt.expectedLevels, tt.forbiddenLevels, tt.logLevel)
+
+			t.Logf("LogLevel %s: Successfully logged to file with levels: %v", tt.logLevel, foundLevels)
+		})
+	}
+}
+
+func TestBouncerFileLoggingCommonFormat(t *testing.T) {
+	// Create temporary directory for log file
+	tmpDir := t.TempDir()
+	logFile := filepath.Join(tmpDir, "bouncer-common.log")
+
+	// Get test config and override specific fields
+	config := getTestConfig()
+	config.LogLevel = "DEBUG"
+	config.LogFormat = "common" // Use common format
+	config.LogFilePath = logFile
+
+	// Create a mock next handler
+	nextHandler := http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write([]byte("OK"))
+	})
+
+	// Create the bouncer plugin
+	bouncerHandler, err := New(context.Background(), nextHandler, config, "test-bouncer")
+	if err != nil {
+		t.Fatalf("Failed to create bouncer: %v", err)
+	}
+
+	// Create a test request to trigger logging
+	req := httptest.NewRequest(http.MethodGet, "http://example.com/test", nil)
+	req.RemoteAddr = "192.168.1.100:12345"
+	rw := httptest.NewRecorder()
+
+	// Process the request
+	bouncerHandler.ServeHTTP(rw, req)
+
+	// Give a moment for log writes to complete
+	time.Sleep(100 * time.Millisecond)
+
+	// Verify the log file was created and contains entries
+	if _, statErr := os.Stat(logFile); os.IsNotExist(statErr) {
+		t.Fatalf("Log file was not created: %s", logFile)
+	}
+
+	// Read the log file content
+	// #nosec G304 - logFile is a test-generated temporary file path
+	logContent, err := os.ReadFile(logFile)
+	if err != nil {
+		t.Fatalf("Failed to read log file: %v", err)
+	}
+
+	logString := string(logContent)
+	if len(logString) == 0 {
+		t.Fatal("Log file is empty")
+	}
+
+	// Verify common format structure
+	lines := strings.Split(strings.TrimSpace(logString), "\n")
+	foundDebug := false
+
+	for _, line := range lines {
+		if strings.TrimSpace(line) == "" {
+			continue
+		}
+
+		// Common format should contain time, level, msg, and component
+		if strings.Contains(line, "level=DEBUG") {
+			foundDebug = true
+		}
+		if !strings.Contains(line, "component=CrowdsecBouncerTraefikPlugin") {
+			t.Errorf("Log line missing component field: %s", line)
+		}
+	}
+
+	// We should see DEBUG level logs since we set LogLevel to DEBUG
+	if !foundDebug {
+		t.Errorf("Expected to find DEBUG level logs in common format. Log content:\n%s", logString)
+	}
+
+	t.Logf("Successfully logged to file %s in common format with %d lines", logFile, len(lines))
+}

bouncer_test.go

@@ -2,6 +2,7 @@ package crowdsec_bouncer_traefik_plugin //nolint:revive,stylecheck
 
 import (
 	"context"
+	htmltemplate "html/template"
 	"net/http"
 	"net/http/httptest"
 	"reflect"
@@ -18,7 +19,7 @@ func TestServeHTTP(t *testing.T) {
 	cfg.CrowdsecLapiKey = "test"
 
 	ctx := context.Background()
-	next := http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {})
+	next := http.HandlerFunc(func(_ http.ResponseWriter, _ *http.Request) {})
 
 	handler, err := New(ctx, next, cfg, "demo-plugin")
 	if err != nil {
@@ -75,7 +76,7 @@ func TestBouncer_ServeHTTP(t *testing.T) {
 		crowdsecMode           string
 		updateInterval         int64
 		defaultDecisionTimeout int64
-		customHeader           string
+		forwardedCustomHeader  string
 		clientPoolStrategy     *ip.PoolStrategy
 		serverPoolStrategy     *ip.PoolStrategy
 		httpClient             *http.Client
@@ -93,7 +94,7 @@ func TestBouncer_ServeHTTP(t *testing.T) {
 		// TODO: Add test cases.
 	}
 	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
+		t.Run(tt.name, func(_ *testing.T) {
 			bouncer := &Bouncer{
 				next:                   tt.fields.next,
 				name:                   tt.fields.name,
@@ -105,7 +106,7 @@ func TestBouncer_ServeHTTP(t *testing.T) {
 				crowdsecMode:           tt.fields.crowdsecMode,
 				updateInterval:         tt.fields.updateInterval,
 				defaultDecisionTimeout: tt.fields.defaultDecisionTimeout,
-				customHeader:           tt.fields.customHeader,
+				forwardedCustomHeader:  tt.fields.forwardedCustomHeader,
 				clientPoolStrategy:     tt.fields.clientPoolStrategy,
 				serverPoolStrategy:     tt.fields.serverPoolStrategy,
 				httpClient:             tt.fields.httpClient,
@@ -163,7 +164,7 @@ func Test_crowdsecQuery(t *testing.T) {
 	type args struct {
 		bouncer   *Bouncer
 		stringURL string
-		isPost    bool
+		data      []byte
 	}
 	tests := []struct {
 		name    string
@@ -175,7 +176,7 @@ func Test_crowdsecQuery(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			got, err := crowdsecQuery(tt.args.bouncer, tt.args.stringURL, tt.args.isPost)
+			got, err := crowdsecQuery(tt.args.bouncer, tt.args.stringURL, tt.args.data)
 			if (err != nil) != tt.wantErr {
 				t.Errorf("crowdsecQuery() error = %v, wantErr %v", err, tt.wantErr)
 				return
@@ -186,3 +187,148 @@ func Test_crowdsecQuery(t *testing.T) {
 		})
 	}
 }
+
+func TestHandleBanServeHTTPWithDifferentMethods(t *testing.T) {
+	html := "<html>You are banned</html>"
+	banTemplate, _ := htmltemplate.New("html").Parse(html)
+	tests := []struct {
+		name              string
+		method            string
+		banTemplate       *htmltemplate.Template
+		expectBodyContent bool
+	}{
+		{
+			name:              "GET request should have body with template",
+			method:            http.MethodGet,
+			banTemplate:       banTemplate,
+			expectBodyContent: true,
+		},
+		{
+			name:              "HEAD request should NOT have body even with template",
+			method:            http.MethodHead,
+			banTemplate:       banTemplate,
+			expectBodyContent: false,
+		},
+		{
+			name:              "POST request should have body with template",
+			method:            http.MethodPost,
+			banTemplate:       banTemplate,
+			expectBodyContent: true,
+		},
+		{
+			name:              "PUT request should have body with template",
+			method:            http.MethodPut,
+			banTemplate:       banTemplate,
+			expectBodyContent: true,
+		},
+		{
+			name:              "DELETE request should have body with template",
+			method:            http.MethodDelete,
+			banTemplate:       banTemplate,
+			expectBodyContent: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			bouncer := &Bouncer{
+				remediationStatusCode:   http.StatusForbidden,
+				remediationCustomHeader: "X-Test-Remediation",
+				banTemplate:             tt.banTemplate,
+			}
+
+			rw := httptest.NewRecorder()
+			req := &http.Request{Method: tt.method}
+			bouncer.handleBanServeHTTP(rw, req, "0.0.0.0", "TEST")
+
+			// Check status code
+			if rw.Code != http.StatusForbidden {
+				t.Errorf("Expected status code 403, got %d", rw.Code)
+			}
+
+			// Check custom header
+			headerValue := rw.Header().Get("X-Test-Remediation")
+			if headerValue != "ban" {
+				t.Errorf("Expected header X-Test-Remediation to be 'ban', got %s", headerValue)
+			}
+
+			// Check body content
+			body := rw.Body.String()
+			hasBodyContent := len(body) > 0
+
+			if hasBodyContent != tt.expectBodyContent {
+				t.Errorf("Method %s: expected body content: %v, got body content: %v (body: %q)",
+					tt.method, tt.expectBodyContent, hasBodyContent, body)
+			}
+
+			// If we expect body content, verify it matches template
+			if tt.expectBodyContent && body != html {
+				t.Errorf("Expected body %q, got %q", html, body)
+			}
+		})
+	}
+}
+
+func TestCaptchaMethodBasedLogic(t *testing.T) {
+	tests := []struct {
+		name              string
+		method            string
+		remediation       string
+		expectBanFallback bool
+	}{
+		{
+			name:              "GET with captcha remediation should allow captcha",
+			method:            http.MethodGet,
+			remediation:       cache.CaptchaValue,
+			expectBanFallback: false,
+		},
+		{
+			name:              "HEAD with captcha remediation should fallback to ban",
+			method:            http.MethodHead,
+			remediation:       cache.CaptchaValue,
+			expectBanFallback: true,
+		},
+		{
+			name:              "POST with captcha remediation should allow captcha",
+			method:            http.MethodPost,
+			remediation:       cache.CaptchaValue,
+			expectBanFallback: false,
+		},
+		{
+			name:              "PUT with captcha remediation should allow captcha",
+			method:            http.MethodPut,
+			remediation:       cache.CaptchaValue,
+			expectBanFallback: false,
+		},
+		{
+			name:              "DELETE with captcha remediation should allow captcha",
+			method:            http.MethodDelete,
+			remediation:       cache.CaptchaValue,
+			expectBanFallback: false,
+		},
+		{
+			name:              "PATCH with captcha remediation should allow captcha",
+			method:            http.MethodPatch,
+			remediation:       cache.CaptchaValue,
+			expectBanFallback: false,
+		},
+		{
+			name:              "OPTIONS with captcha remediation should allow captcha",
+			method:            http.MethodOptions,
+			remediation:       cache.CaptchaValue,
+			expectBanFallback: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Test the core logic: captcha is served for all methods except HEAD
+			shouldUseCaptcha := tt.remediation == cache.CaptchaValue && tt.method != http.MethodHead
+
+			if shouldUseCaptcha == tt.expectBanFallback {
+				t.Errorf("Method %s with %s remediation: expected ban fallback %v, but logic would use captcha %v",
+					tt.method, tt.remediation, tt.expectBanFallback, shouldUseCaptcha)
+			}
+		})
+	}
+}

captcha.html

@@ -293,7 +293,7 @@
         </svg>
         <h1 class="text-2xl lg:text-3xl xl:text-4xl">CrowdSec Captcha</h1>
       </div>
-      <form action="" method="POST" class="flex flex-col space-y-1" id="captcha-form">
+      <form action="" method="POST" class="flex flex-col items-center space-y-1" id="captcha-form">
         <div id="captcha" class="{{ .FrontendKey }}" data-sitekey="{{ .SiteKey }}" data-callback="captchaCallback">
         </div>
       </form>

docker-compose.local.yml

@@ -1,6 +1,6 @@
 services:
   traefik:
-    image: "traefik:v3.0.0"
+    image: "traefik:v3.5.0"
     container_name: "traefik"
     restart: unless-stopped
     command:
@@ -16,8 +16,8 @@ services:
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
       - logs-local:/var/log/traefik
-      - './ban.html:/ban.html:ro'
-      - './captcha.html:/captcha.html:ro'
+      - "./ban.html:/ban.html:ro"
+      - "./captcha.html:/captcha.html:ro"
       - ./:/plugins-local/src/github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin
     ports:
       - 8000:80
@@ -36,7 +36,7 @@ services:
       - "traefik.http.routers.router-foo.middlewares=crowdsec@docker"
       - "traefik.http.services.service-foo.loadbalancer.server.port=80"
 
-  whoami2:
+  bar:
     image: traefik/whoami
     container_name: "simple-service-bar"
     restart: unless-stopped
@@ -48,12 +48,39 @@ services:
       - "traefik.http.services.service-bar.loadbalancer.server.port=80"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.enabled=true"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.loglevel=DEBUG"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.metricsupdateintervalseconds=15"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecappsecenabled=true"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecmode=stream"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5="
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.ForwardedHeadersTrustedIPs=172.21.0.1/8"
 
+  bar2:
+    image: traefik/whoami
+    container_name: "simple-service-bar2"
+    restart: unless-stopped
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.router-bar2.rule=PathPrefix(`/bar2`)"
+      - "traefik.http.routers.router-bar2.entrypoints=web"
+      - "traefik.http.routers.router-bar2.middlewares=crowdsec2@docker"
+      - "traefik.http.services.service-bar2.loadbalancer.server.port=80"
+      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.enabled=true"
+      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.loglevel=DEBUG"
+      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.crowdsecmode=stream"
+      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.updateintervalseconds=10"
+      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.updatemaxfailure=-1"
+      - "traefik.http.middlewares.crowdsec2.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5="
+  bar3:
+    image: traefik/whoami
+    container_name: "simple-service-bar3"
+    restart: unless-stopped
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.router-bar3.rule=PathPrefix(`/bar3`)"
+      - "traefik.http.routers.router-bar3.entrypoints=web"
+      - "traefik.http.routers.router-bar3.middlewares=crowdsec2@docker"
   crowdsec:
-    image: crowdsecurity/crowdsec:v1.6.1-2
+    image: crowdsecurity/crowdsec:v1.6.8
     container_name: "crowdsec"
     restart: unless-stopped
     environment:
@@ -67,7 +94,6 @@ services:
       - crowdsec-config-local:/etc/crowdsec/
     labels:
       - "traefik.enable=false"
-
 volumes:
   logs-local:
   crowdsec-db-local:

docker-compose.yml

@@ -59,7 +59,7 @@ services:
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.forwardedheaderstrustedips=172.21.0.5"
 
   crowdsec:
-    image: crowdsecurity/crowdsec:v1.6.1-2
+    image: crowdsecurity/crowdsec:v1.6.8
     container_name: "crowdsec"
     restart: unless-stopped
     environment:

examples/appsec-enabled/docker-compose.yml

@@ -1,8 +1,6 @@
-version: "3.8"
-
 services:
   traefik:
-    image: "traefik:v3.0.0"
+    image: "traefik:v3.5.0"
     container_name: "traefik"
     restart: unless-stopped
     command:
@@ -15,7 +13,7 @@ services:
       - "--entrypoints.web.address=:80"
 
       - "--experimental.plugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
-      - "--experimental.plugins.bouncer.version=v1.3.0"
+      - "--experimental.plugins.bouncer.version=v1.5.0"
       # - "--experimental.localplugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
@@ -48,8 +46,6 @@ services:
       # Define AppSec host and port informations
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecappsechost=crowdsec:7422"
 
-  
-
   crowdsec:
     image: crowdsecurity/crowdsec:v1.6.1-2
     container_name: "crowdsec"

examples/captcha/README.md

@@ -20,7 +20,7 @@ For now 3 captcha providers are supported:
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaSiteKey=FIXME"
       # Define captcha secret key
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaSecretKey=FIXME"
-      # Define captcha grade period seconds
+      # Define captcha grace period seconds
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaGracePeriodSeconds=1800"
       # Define captcha HTML file path
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaHTMLFilePath=/captcha.html"
@@ -47,7 +47,7 @@ To instruct Crowdsec to use captcha remediation, change the `/etc/crowdsec/profi
 - Return a captcha decision the first X times and then a ban decision.
 
 The second mode could be used to prevent repeated malicious activity.
-More information is available on configuring Crowdsec in the [official documentation](https://docs.crowdsec.net/docs/next/profiles/captcha_profile/).
+More information is available on configuring Crowdsec in the [official documentation](https://docs.crowdsec.net/docs/next/local_api/profiles/captcha_profile/).
 
 ```yaml
   ...

examples/captcha/captcha.html

@@ -293,7 +293,7 @@
         </svg>
         <h1 class="text-2xl lg:text-3xl xl:text-4xl">CrowdSec Captcha</h1>
       </div>
-      <form action="" method="POST" class="flex flex-col space-y-1" id="captcha-form">
+      <form action="" method="POST" class="flex flex-col items-center space-y-1" id="captcha-form">
         <div id="captcha" class="{{ .FrontendKey }}" data-sitekey="{{ .SiteKey }}" data-callback="captchaCallback">
         </div>
       </form>

examples/custom-ban-page/README.md

@@ -45,3 +45,15 @@ To play the demo environment run:
 ```bash
 make run_custom_ban_page
 ```
+
+## Another thing to note
+In the html of the ban page, you can use:  
+- {{ .ClientIP }} to display the IP used to ban the request.  
+- {{ .RemediationReason }} that convert on runtime into why the ban page is served. It's an enum with "APPSEC", "LAPI", "TECHNICAL_ISSUE" and it is useful to help user understand why the request is blocked.  
+- {{ .CustomHeader }} value of the specified Request Header (for example X-Request-ID)
+```
+<script>var remediation = "{{ .RemediationReason }}"</script>
+<script>var clientIp = "{{ .ClientIP }}"</script>
+<script>var traceID = "{{ .TraceID }}"</script>
+```
+With the above tweak and some other js, you can customize your ban page on runtime.

examples/custom-captcha/README.md

@@ -0,0 +1,79 @@
+# Example
+
+Read the example captcha before this, to better understand what is done here.
+
+### Traefik configuration
+
+The minimal configuration is defined below to implement custom captcha.  
+This documentation use https://github.com/a-ve/wicketkeeper, a self-hosted captcha provider that have a similar API than big providers.
+
+Minimal API requirement:
+
+- the JS file URL to load the captcha on the served `captcha.html`
+- the HTML className to tell to the JS where to display the challenge
+- the verify URL endpoint to send the field `response` from the captcha with `content-type: application/x-www-form-urlencoded`
+- the name of the field when you POST the resolved captcha to Traefik
+
+- the JS file need to respect the `data-callback` on the div that contains the captcha if you use our template, but you can customize it by your side
+
+```yaml
+  traefik:
+    ...
+    labels:
+      # Choose captcha provider
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaProvider=custom"
+      # Define captcha grace period seconds
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaGracePeriodSeconds=1800"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaCustomJsURL=http://captcha.localhost:8000/fast.js"
+      # Inside Traefik container the plugin must be able to reach wicketkeeper service so we can go through a Traefik localhost
+      # domain which would resolve traefik itself and the port for the dashboard
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.CaptchaCustomValidateURL=http://wicketkeeper:8080/v0/siteverify"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.CaptchaCustomKey=wicketkeeper"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.CaptchaCustomResponse=wicketkeeper_solution"
+      # Define captcha HTML file path
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaHTMLFilePath=/captcha.html"
+```
+
+```yaml
+wicketkeeper:
+  image: ghcr.io/a-ve/wicketkeeper:latest
+  user: root
+  ports:
+    - "8080:8080"
+  environment:
+    - LISTEN_PORT=8080
+    - REDIS_ADDR=redis:6379
+    - DIFFICULTY=4
+    - ALLOWED_ORIGINS=*
+    - PRIVATE_KEY_PATH=/data/wicketkeeper.key
+  volumes:
+    - ./data:/data
+  depends_on:
+    - redis
+redis:
+  image: redis/redis-stack-server:latest
+```
+
+```html
+<div id="captcha" class="{{ .FrontendKey }}" data-sitekey="{{ .SiteKey }}" data-callback="captchaCallback" data-challenge-url="http://captcha.localhost:8000/v0/challenge">
+```
+
+## Exemple navigation
+
+We can try to query normally the whoami server:
+
+```bash
+curl http://localhost:8000/foo
+```
+
+We can try to ban ourself and retry.
+
+```bash
+docker exec crowdsec cscli decisions add --ip 10.0.0.20 -d 10m --type captcha
+```
+
+To play the demo environment run:
+
+```bash
+make run_custom_captcha
+```

examples/custom-captcha/acquis.yaml

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

examples/custom-captcha/captcha.html

@@ -0,0 +1,338 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <title>CrowdSec Captcha</title>
+  <meta content="text/html; charset=utf-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <style>
+    /*! tailwindcss v3.2.7 | MIT License | https://tailwindcss.com*/
+    *,
+    :after,
+    :before {
+      border: 0 solid #e5e7eb;
+      box-sizing: border-box
+    }
+
+    :after,
+    :before {
+      --tw-content: ""
+    }
+
+    html {
+      -webkit-text-size-adjust: 100%;
+      font-feature-settings: normal;
+      font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica Neue, Arial, Noto Sans, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol, Noto Color Emoji;
+      line-height: 1.5;
+      -moz-tab-size: 4;
+      -o-tab-size: 4;
+      tab-size: 4
+    }
+
+    body {
+      line-height: inherit;
+      margin: 0
+    }
+
+    h1,
+    h2,
+    h3,
+    h4,
+    h5,
+    h6 {
+      font-size: inherit;
+      font-weight: inherit
+    }
+
+    a {
+      color: inherit;
+      text-decoration: inherit
+    }
+
+    h1,
+    h2,
+    h3,
+    h4,
+    h5,
+    h6,
+    hr,
+    p,
+    pre {
+      margin: 0
+    }
+
+    *,
+    ::backdrop,
+    :after,
+    :before {
+      --tw-border-spacing-x: 0;
+      --tw-border-spacing-y: 0;
+      --tw-translate-x: 0;
+      --tw-translate-y: 0;
+      --tw-rotate: 0;
+      --tw-skew-x: 0;
+      --tw-skew-y: 0;
+      --tw-scale-x: 1;
+      --tw-scale-y: 1;
+      --tw-pan-x: ;
+      --tw-pan-y: ;
+      --tw-pinch-zoom: ;
+      --tw-scroll-snap-strictness: proximity;
+      --tw-ordinal: ;
+      --tw-slashed-zero: ;
+      --tw-numeric-figure: ;
+      --tw-numeric-spacing: ;
+      --tw-numeric-fraction: ;
+      --tw-ring-inset: ;
+      --tw-ring-offset-width: 0px;
+      --tw-ring-offset-color: #fff;
+      --tw-ring-color: #3b82f680;
+      --tw-ring-offset-shadow: 0 0 #0000;
+      --tw-ring-shadow: 0 0 #0000;
+      --tw-shadow: 0 0 #0000;
+      --tw-shadow-colored: 0 0 #0000;
+      --tw-blur: ;
+      --tw-brightness: ;
+      --tw-contrast: ;
+      --tw-grayscale: ;
+      --tw-hue-rotate: ;
+      --tw-invert: ;
+      --tw-saturate: ;
+      --tw-sepia: ;
+      --tw-drop-shadow: ;
+      --tw-backdrop-blur: ;
+      --tw-backdrop-brightness: ;
+      --tw-backdrop-contrast: ;
+      --tw-backdrop-grayscale: ;
+      --tw-backdrop-hue-rotate: ;
+      --tw-backdrop-invert: ;
+      --tw-backdrop-opacity: ;
+      --tw-backdrop-saturate: ;
+      --tw-backdrop-sepia:
+    }
+
+    .flex {
+      display: flex
+    }
+    .flex-wrap {
+      flex-wrap: wrap
+    }
+
+    .inline-flex {
+      display: inline-flex
+    }
+
+    .h-24 {
+      height: 6rem
+    }
+
+    .h-6 {
+      height: 1.5rem
+    }
+
+    .h-full {
+      height: 100%
+    }
+
+    .h-screen {
+      height: 100vh
+    }
+
+    .text-center {
+      text-align: center
+    }
+
+    .w-24 {
+      width: 6rem
+    }
+
+    .w-6 {
+      width: 1.5rem
+    }
+
+    .w-full {
+      width: 100%
+    }
+
+    .w-screen {
+      width: 100vw
+    }
+
+    .my-3 {
+      margin-top: 0.75rem;
+      margin-bottom: 0.75rem
+    }
+
+    .flex-col {
+      flex-direction: column
+    }
+
+    .items-center {
+      align-items: center
+    }
+
+    .justify-center {
+      justify-content: center
+    }
+
+    .justify-between {
+      justify-content: space-between
+    }
+
+    .space-y-1>:not([hidden])~:not([hidden]) {
+      --tw-space-y-reverse: 0;
+      margin-bottom: calc(.25rem*var(--tw-space-y-reverse));
+      margin-top: calc(.25rem*(1 - var(--tw-space-y-reverse)))
+    }
+
+    .space-y-4>:not([hidden])~:not([hidden]) {
+      --tw-space-y-reverse: 0;
+      margin-bottom: calc(1rem*var(--tw-space-y-reverse));
+      margin-top: calc(1rem*(1 - var(--tw-space-y-reverse)))
+    }
+
+    .rounded-xl {
+      border-radius: .75rem
+    }
+
+    .border-2 {
+      border-width: 2px
+    }
+
+    .border-black {
+      --tw-border-opacity: 1;
+      border-color: rgb(0 0 0/var(--tw-border-opacity))
+    }
+
+    .p-4 {
+      padding: 1rem
+    }
+
+    .px-4 {
+      padding-left: 1rem;
+      padding-right: 1rem
+    }
+
+    .py-2 {
+      padding-bottom: .5rem;
+      padding-top: .5rem
+    }
+
+    .text-2xl {
+      font-size: 1.5rem;
+      line-height: 2rem
+    }
+
+    .text-sm {
+      font-size: .875rem;
+      line-height: 1.25rem
+    }
+
+    .text-xl {
+      font-size: 1.25rem;
+      line-height: 1.75rem
+    }
+
+    .font-bold {
+      font-weight: 700
+    }
+
+    .text-white {
+      --tw-text-opacity: 1;
+      color: rgb(255 255 255/var(--tw-text-opacity))
+    }
+
+    @media (min-width:640px) {
+      .sm\:w-2\/3 {
+        width: 66.666667%
+      }
+    }
+
+    @media (min-width:768px) {
+      .md\:flex-row {
+        flex-direction: row
+      }
+    }
+
+    @media (min-width:1024px) {
+      .lg\:w-1\/2 {
+        width: 50%
+      }
+
+      .lg\:text-3xl {
+        font-size: 1.875rem;
+        line-height: 2.25rem
+      }
+
+      .lg\:text-xl {
+        font-size: 1.25rem;
+        line-height: 1.75rem
+      }
+    }
+
+    @media (min-width:1280px) {
+      .xl\:text-4xl {
+        font-size: 2.25rem;
+        line-height: 2.5rem
+      }
+    }
+  </style>
+  <script src="{{ .FrontendJS }}" async defer></script>
+</head>
+
+<body class="h-screen w-screen p-4">
+  <div class="h-full w-full flex flex-col justify-center items-center">
+    <div class="border-2 border-black rounded-xl p-4 text-center w-full sm:w-2/3 lg:w-1/2">
+      <div class="flex flex-col items-center space-y-4">
+        <svg fill="black" class="h-24 w-24" aria-hidden="true" focusable="false" data-prefix="fas"
+          data-icon="exclamation-triangle" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 576 512"
+          class="warning">
+          <path
+            d="M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z">
+          </path>
+        </svg>
+        <h1 class="text-2xl lg:text-3xl xl:text-4xl">CrowdSec Captcha</h1>
+      </div>
+      <form action="" method="POST" class="flex flex-col items-center space-y-1" id="captcha-form">
+        <div id="captcha" class="{{ .FrontendKey }}" data-sitekey="{{ .SiteKey }}" data-callback="captchaCallback" data-challenge-url="http://captcha.localhost:8000/v0/challenge">
+        </div>
+      </form>
+      <div class="flex justify-center flex-wrap">
+        <p class="my-3">This security check has been powered by</p>
+        <a href="https://crowdsec.net/" target="_blank" rel="noopener" class="inline-flex flex-col items-center">
+          <svg fill="black" width="33.92" height="33.76" viewBox="0 0 254.4 253.2">
+            <defs>
+              <clipPath id="a">
+                <path d="M0 52h84v201.2H0zm0 0" />
+              </clipPath>
+              <clipPath id="b">
+                <path d="M170 52h84.4v201.2H170zm0 0" />
+              </clipPath>
+            </defs>
+            <path
+              d="M59.3 128.4c1.4 2.3 2.5 4.6 3.4 7-1-4.1-2.3-8.1-4.3-12-3.1-6-7.8-5.8-10.7 0-2 4-3.2 8-4.3 12.1 1-2.4 2-4.8 3.4-7.1 3.4-5.8 8.8-6 12.5 0M207.8 128.4a42.9 42.9 0 013.4 7c-1-4.1-2.3-8.1-4.3-12-3.2-6-7.8-5.8-10.7 0-2 4-3.3 8-4.3 12.1.9-2.4 2-4.8 3.4-7.1 3.4-5.8 8.8-6 12.5 0M134.6 92.9c2 3.5 3.6 7 4.8 10.7-1.3-5.4-3-10.6-5.6-15.7-4-7.5-9.7-7.2-13.3 0a75.4 75.4 0 00-5.6 16c1.2-3.8 2.7-7.4 4.7-11 4.1-7.2 10.6-7.5 15 0M43.8 136.8c.9 4.6 3.7 8.3 7.3 9.2 0 2.7 0 5.5.2 8.2.3 3.3.4 6.6 1 9.6.3 2.3 1 2.2 1.3 0 .5-3 .6-6.3 1-9.6l.2-8.2c3.5-1 6.4-4.6 7.2-9.2a17.8 17.8 0 01-9 2.4c-3.5 0-6.6-1-9.2-2.4M192.4 136.8c.8 4.6 3.7 8.3 7.2 9.2 0 2.7 0 5.5.3 8.2.3 3.3.4 6.6 1 9.6.3 2.3.9 2.2 1.2 0 .6-3 .7-6.3 1-9.6.2-2.7.3-5.5.2-8.2 3.6-1 6.4-4.6 7.3-9.2a17.8 17.8 0 01-9.1 2.4c-3.4 0-6.6-1-9.1-2.4M138.3 104.6c-3.1 1.9-7 3-11.3 3-4.3 0-8.2-1.1-11.3-3 1 5.8 4.5 10.3 9 11.5 0 3.4 0 6.8.3 10.2.4 4.1.5 8.2 1.2 12 .4 2.9 1.2 2.7 1.6 0 .7-3.8.8-7.9 1.2-12 .3-3.4.3-6.8.3-10.2 4.5-1.2 8-5.7 9-11.5" />
+            <path
+              d="M51 146c0 2.7.1 5.5.3 8.2.3 3.3.4 6.6 1 9.6.3 2.3 1 2.2 1.3 0 .5-3 .6-6.3 1-9.6l.2-8.2c3.5-1 6.4-4.6 7.2-9.2a17.8 17.8 0 01-9 2.4c-3.5 0-6.6-1-9.2-2.4.9 4.6 3.7 8.3 7.3 9.2M143.9 105c-1.9-.4-3.5-1.2-4.9-2.3 1.4 5.6 2.5 11.3 4 17 1.2 5 2 10 2.4 15 .6 7.8-4.5 14.5-10.9 14.5h-15c-6.4 0-11.5-6.7-11-14.5.5-5 1.3-10 2.6-15 1.3-5.3 2.3-10.5 3.6-15.7-2.2 1.2-4.8 1.9-7.7 2-4.7.1-9.4-.3-14-1-4-.4-6.7-3-8-6.7-1.3-3.4-2-7-3.3-10.4-.5-1.5-1.6-2.8-2.4-4.2-.4-.6-.8-1.2-.9-1.8v-7.8a77 77 0 0124.5-3c6.1 0 12 1 17.8 3.2 4.7 1.7 9.7 1.8 14.4 0 9-3.4 18.2-3.8 27.5-3 4.9.5 9.8 1.6 14.8 2.4v8.2c0 .6-.3 1.5-.7 1.7-2 .9-2.2 2.7-2.7 4.5-.9 3.2-1.8 6.4-2.9 9.5a11 11 0 01-8.8 7.7 40.6 40.6 0 01-18.4-.2m29.4 80.6c-3.2-26.8-6.4-50-8.9-60.7a14.3 14.3 0 0014.1-14h.4a9 9 0 005.6-16.5 14.3 14.3 0 00-3.7-27.2 9 9 0 00-6.9-14.6c2.4-1.1 4.5-3 5.8-5 3.4-5.3 4-29-8-44.4-5-6.3-9.8-2.5-10 1.8-1 13.2-1.1 23-4.5 34.3a9 9 0 00-16-4.1 14.3 14.3 0 00-28.4 0 9 9 0 00-16 4.1c-3.4-11.2-3.5-21.1-4.4-34.3-.3-4.3-5.2-8-10-1.8-12 15.3-11.5 39-8.1 44.4 1.3 2 3.4 3.9 5.8 5a9 9 0 00-7 14.6 14.3 14.3 0 00-3.6 27.2A9 9 0 0075 111h.5a14.5 14.5 0 0014.3 14c-4 17.2-10 66.3-15 111.3l-1.3 13.4a1656.4 1656.4 0 01106.6 0l-1.4-12.7-5.4-51.3" />
+            <g clip-path="url(#a)">
+              <path
+                d="M83.5 136.6l-2.3.7c-5 1-9.8 1-14.8-.2-1.4-.3-2.7-1-3.8-1.9l3.1 13.7c1 4 1.7 8 2 12 .5 6.3-3.6 11.6-8.7 11.6H46.9c-5.1 0-9.2-5.3-8.7-11.6.3-4 1-8 2-12 1-4.2 1.8-8.5 2.9-12.6-1.8 1-3.9 1.5-6.3 1.6a71 71 0 01-11.1-.7 7.7 7.7 0 01-6.5-5.5c-1-2.7-1.6-5.6-2.6-8.3-.4-1.2-1.3-2.3-2-3.4-.2-.4-.6-1-.6-1.4v-6.3c6.4-2 13-2.6 19.6-2.5 4.9.1 9.6 1 14.2 2.6 3.9 1.4 7.9 1.5 11.7 0 1.8-.7 3.6-1.2 5.5-1.6a13 13 0 01-1.6-15.5A18.3 18.3 0 0159 73.1a11.5 11.5 0 00-17.4 8.1 7.2 7.2 0 00-12.9 3.3c-2.7-9-2.8-17-3.6-27.5-.2-3.4-4-6.5-8-1.4C7.5 67.8 7.9 86.9 10.6 91c1.1 1.7 2.8 3.1 4.7 4a7.2 7.2 0 00-5.6 11.7 11.5 11.5 0 00-2.9 21.9 7.2 7.2 0 004.5 13.2h.3c0 .6 0 1.1.2 1.7.9 5.4 5.6 9.5 11.3 9.5A1177.2 1177.2 0 0010 253.2c18.1-1.5 38.1-2.6 59.5-3.4.4-4.6.8-9.3 1.4-14 1.2-11.6 3.3-30.5 5.7-49.7 2.2-18 4.7-36.3 7-49.5" />
+            </g>
+            <g clip-path="url(#b)">
+              <path
+                d="M254.4 118.2c0-5.8-4.2-10.5-9.7-11.4a7.2 7.2 0 00-5.6-11.7c2-.9 3.6-2.3 4.7-4 2.7-4.2 3.1-23.3-6.5-35.5-4-5.1-7.8-2-8 1.4-.8 10.5-.9 18.5-3.6 27.5a7.2 7.2 0 00-12.8-3.3 11.5 11.5 0 00-17.8-7.9 18.4 18.4 0 01-4.5 22 13 13 0 01-1.3 15.2c2.4.5 4.8 1 7.1 2 3.8 1.3 7.8 1.4 11.6 0 7.2-2.8 14.6-3 22-2.4 4 .4 7.9 1.2 12 1.9l-.1 6.6c0 .5-.2 1.2-.5 1.3-1.7.7-1.8 2.2-2.2 3.7l-2.3 7.6a8.8 8.8 0 01-7 6.1c-5 1-10 1-14.9-.2-1.5-.3-2.8-1-3.9-1.9 1.2 4.5 2 9.1 3.2 13.7 1 4 1.6 8 2 12 .4 6.3-3.6 11.6-8.8 11.6h-12c-5.2 0-9.3-5.3-8.8-11.6.4-4 1-8 2-12 1-4.2 1.9-8.5 3-12.6-1.8 1-4 1.5-6.3 1.6-3.7 0-7.5-.3-11.2-.7a7.7 7.7 0 01-3.7-1.5c3.1 18.4 7.1 51.2 12.5 100.9l.6 5.3.8 7.9c21.4.7 41.5 1.9 59.7 3.4L243 243l-4.4-41.2a606 606 0 00-7-48.7 11.5 11.5 0 0011.2-11.2h.4a7.2 7.2 0 004.4-13.2c4-1.8 6.8-5.8 6.8-10.5" />
+            </g>
+            <path
+              d="M180 249.6h.4a6946 6946 0 00-7.1-63.9l5.4 51.3 1.4 12.6M164.4 125c2.5 10.7 5.7 33.9 8.9 60.7a570.9 570.9 0 00-8.9-60.7M74.8 236.3l-1.4 13.4 1.4-13.4" />
+          </svg>
+          <span>CrowdSec</span>
+        </a>
+      </div>
+    </div>
+  </div>
+  <script>
+    function captchaCallback() {
+      setTimeout(() => document.querySelector('#captcha-form').submit(), 500);
+    }
+  </script>
+</body>
+</html>

examples/custom-captcha/docker-compose.yml

@@ -0,0 +1,110 @@
+services:
+  traefik:
+    image: "traefik:v3.5.0"
+    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"
+      - "--entrypoints.web.forwardedheaders.trustedips=172.18.0.0/24"
+
+      - "--experimental.plugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
+      - "--experimental.plugins.bouncer.version=v1.4.5"
+      # - "--experimental.localplugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - logs-custom-captcha-enabled:/var/log/traefik
+      - "./captcha.html:/captcha.html"
+      # - ./../../:/plugins-local/src/github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin
+    ports:
+      - 8000:80
+      - 8080:8080
+    depends_on:
+      - crowdsec
+
+  whoami-foo:
+    image: traefik/whoami
+    container_name: "simple-service-custom-captcha-foo"
+    restart: unless-stopped
+    labels:
+      - "traefik.enable=true"
+      # Definition of the router
+      - "traefik.http.routers.router-foo.rule=PathPrefix(`/foo`)"
+      - "traefik.http.routers.router-foo.entrypoints=web"
+      - "traefik.http.routers.router-foo.middlewares=crowdsec@docker"
+      # Definition of the service
+      - "traefik.http.services.service-foo.loadbalancer.server.port=80"
+      # Definition of the middleware
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.loglevel=DEBUG"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.enabled=true"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecmode=none"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5"
+
+      # Choose captcha provider
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaProvider=custom"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaCustomJsURL=http://captcha.localhost:8000/fast.js"
+      # Inside Traefik container the plugin must be able to reach wicketkeeper service so we can go through a Traefik localhost
+      # domain which would resolve traefik itself and the port for the dashboard
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.CaptchaCustomValidateURL=http://wicketkeeper:8080/v0/siteverify"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.CaptchaCustomKey=wicketkeeper"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.CaptchaCustomResponse=wicketkeeper_solution"
+      # Define captcha grade period seconds
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaGracePeriodSeconds=20"
+      # Define captcha HTML file path
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.captchaHTMLFilePath=/captcha.html"
+
+  crowdsec:
+    image: crowdsecurity/crowdsec:v1.6.1-2
+    container_name: "crowdsec"
+    restart: unless-stopped
+    environment:
+      COLLECTIONS: crowdsecurity/traefik
+      CUSTOM_HOSTNAME: crowdsec
+      BOUNCER_KEY_TRAEFIK_DEV: 40796d93c2958f9e58345514e67740e5
+    volumes:
+      # For captcha and ban mixed decision
+      - "./profiles.yaml:/etc/crowdsec/profiles.yaml:ro"
+      # For captcha only remediation
+      # - './profiles_captcha_only.yaml:/etc/crowdsec/profiles.yaml:ro'
+      - "./acquis.yaml:/etc/crowdsec/acquis.yaml:ro"
+      - logs-custom-captcha-enabled:/var/log/traefik:ro
+      - crowdsec-db-custom-captcha-enabled:/var/lib/crowdsec/data/
+      - crowdsec-config-custom-captcha-enabled:/etc/crowdsec/
+    labels:
+      - "traefik.enable=false"
+
+  wicketkeeper:
+    image: ghcr.io/a-ve/wicketkeeper:latest
+    container_name: "wicketkeeper"
+    environment:
+      - LISTEN_PORT=8080
+      - REDIS_ADDR=redis:6379
+      - DIFFICULTY=4
+      - ALLOWED_ORIGINS=*
+      - PRIVATE_KEY_PATH=/data/wicketkeeper.key # To override in production environment
+    volumes:
+      - wicketkeeper-custom-captcha-enabled:/data
+    user: root
+    labels:
+      - "traefik.enable=true"
+      # Definition of the router
+      - "traefik.http.routers.router-wicketkeeper.rule=Host(`captcha.localhost`)"
+      - "traefik.http.routers.router-wicketkeeper.entrypoints=web"
+      # Definition of the service
+      - "traefik.http.services.service-wicketkeeper.loadbalancer.server.port=8080"
+    depends_on:
+      - redis
+
+  redis:
+    image: redis/redis-stack-server:latest
+
+volumes:
+  logs-custom-captcha-enabled:
+  wicketkeeper-custom-captcha-enabled:
+  crowdsec-db-custom-captcha-enabled:
+  crowdsec-config-custom-captcha-enabled:

examples/custom-captcha/profiles.yaml

@@ -0,0 +1,17 @@
+name: captcha_remediation
+filters:
+  - Alert.Remediation == true && Alert.GetScope() == "Ip" && Alert.GetScenario() contains "http" && GetDecisionsSinceCount(Alert.GetValue(), "24h") <= 3
+## Same as above but only 3 captcha decision per 24 hours before ban
+decisions:
+ - type: captcha
+   duration: 4h
+on_success: break
+---
+name: default_ip_remediation
+filters:
+ - Alert.Remediation == true && Alert.GetScope() == "Ip"
+decisions:
+ - type: ban
+   duration: 4h
+#duration_expr: "Sprintf('%dh', (GetDecisionsCount(Alert.GetValue()) + 1) * 4)"
+on_success: break

examples/kubernetes/traefik/values.yml

@@ -6,6 +6,7 @@ logs:
     level: DEBUG
   access:
     enabled: true
+    format: json
     fields:
       headers: 
         defaultmode: keep

examples/standalone-mode/README.md

@@ -3,7 +3,9 @@ You need to create a crowdsec API credentials for the CAPI.
 You can follow the documentation here: https://docs.crowdsec.net/docs/central_api/intro
 
 ```bash
-curl -X POST "https://api.crowdsec.net/v2/watchers" -H  "accept: application/json" -H  "Content-Type: application/json" -d "{ \"password\": \"PASSWORD\",  \"machine_id\": \"LOGIN\"}"
+LOGIN=...
+PASSWORD=...
+curl -X POST "https://api.crowdsec.net/v2/watchers" -H "accept: application/json" -H "Content-Type: application/json" -d "{ \"password\": \"$PASSWORD\",  \"machine_id\": \"$LOGIN\"}"
 ```
 
 These CAPI credentials must be set in your docker-compose.yml or in your config files

examples/standalone-mode/docker-compose.yml

@@ -35,8 +35,7 @@ services:
 
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.enabled=true"
       # - "traefik.http.middlewares.crowdsec.plugin.bouncer.loglevel=DEBUG"
-      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecmode=alone"
-      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdseclapikey=40796d93c2958f9e58345514e67740e5"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecMode=alone"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.CrowdsecCapiMachineId=FIXME"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.CrowdsecCapiPassword=FIXME"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdseccapiscenarios=crowdsecurity/sshd,crowdsecurity/asterisk_bf,crowdsecurity/asterisk_user_enum,crowdsecurity/base-http-scenarios"

examples/tls-auth/README.md

@@ -1,7 +1,9 @@
 # Example
+
 ## Using https communication and tls authentication with Crowdsec
 
 ##### Summary
+
 This example demonstrates the use of https between the Traefik plugin and the Crowdsec LAPI.
 
 It is possible to communicate with the LAPI in https and still authenticate with API key.
@@ -17,7 +19,9 @@ In that case the setting **crowdsecLapiTLSInsecureVerify** must be set to true.
 It is recommended to validate the certificate presented by Crowdsec LAPI using the Certificate Authority which created it.
 
 You can provide the Certificate Authority using:
-* A file path readable by Traefik
+
+- A file path readable by Traefik
+
 ```yaml
 http:
   middlewares:
@@ -26,9 +30,11 @@ http:
         bouncer:
           crowdsecLapiTlsCertificateAuthorityFile: /etc/traefik/certs/crowdsecCA.pem
 ```
-* The PEM encoded certificate as a text variable
+
+- The PEM encoded certificate as a text variable
 
 In the static file configuration of Traefik
+
 ```yaml
 http:
   middlewares:
@@ -36,15 +42,17 @@ http:
       plugin:
         bouncer:
           crowdsecLapiTlsCertificateAuthority: |-
-              -----BEGIN CERTIFICATE-----
-              MIIEBzCCAu+gAwIBAgICEAAwDQYJKoZIhvcNAQELBQAwgZQxCzAJBgNVBAYTAlVT
-              MRAwDgYDVQQHDAdTZWF0dGxlMRMwEQYDVQQIDApXYXNoaW5ndG9uMSIwIAYDVQQK
-              ...
-              C6qNieSwcvWL7C03ri0DefTQMY54r5wP33QU5hJ71JoaZI3YTeT0Nf+NRL4hM++w
-              Q0veeNzBQXg1f/JxfeA39IDIX1kiCf71tGlT
-              -----END CERTIFICATE-----
+            -----BEGIN CERTIFICATE-----
+            MIIEBzCCAu+gAwIBAgICEAAwDQYJKoZIhvcNAQELBQAwgZQxCzAJBgNVBAYTAlVT
+            MRAwDgYDVQQHDAdTZWF0dGxlMRMwEQYDVQQIDApXYXNoaW5ndG9uMSIwIAYDVQQK
+            ...
+            C6qNieSwcvWL7C03ri0DefTQMY54r5wP33QU5hJ71JoaZI3YTeT0Nf+NRL4hM++w
+            Q0veeNzBQXg1f/JxfeA39IDIX1kiCf71tGlT
+            -----END CERTIFICATE-----
 ```
+
 In a dynamic configuration of a provider (ex docker) as a Label
+
 ```yaml
 services:
   whoami-foo:
@@ -71,22 +79,34 @@ The service `whoami-foo` will authenticate with an **API key** over HTTPS after
 The service `whoami-bar` will authenticate with a **client certificate** signed by the CA.
 
 Access to a route that communicate via https and authenticate with API-key:
+
 ```
 curl http://localhost:8000/foo
 ```
+
 Access to a route that communicate via https and authenticate with a client certificate:
+
 ```
 curl http://localhost:8000/bar
 ```
+
 Access to the traefik dashboard
+
 ```
 curl http://localhost:8080/dashboard/#/
 ```
 
 To play the demo environnement run:
+
 ```bash
 make run_tlsauth
 ```
 
 Note:
-> Traefik need to be restart if certificates are regenerated after his launch
+
+> Traefik need to be restarted if certificates are regenerated after his launch, crowdsec also
+
+## Separate LAPI and Appsec HTTP/S config
+
+To separate TLS config for LAPI and Appsec, you can use all the TLS LAPI variable beginning with `CrowdsecLapi...` into `CrowdsecAppsec...`.
+Don't forget to set `CrowdsecAppsecScheme: HTTP` or `HTTPS` to trigger the separate setup.

examples/tls-auth/config/acquis.yaml

@@ -2,3 +2,12 @@ filenames:
  - /var/log/traefik/access.log
 labels:
   type: traefik
+---
+listen_addr: 0.0.0.0:7422
+appsec_config: crowdsecurity/virtual-patching
+name: myAppSecComponent
+source: appsec
+labels:
+  type: appsec
+cert_file: /etc/crowdsec/certs/server.pem
+key_file: /etc/crowdsec/certs/server-key.pem

examples/tls-auth/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   traefik:
-    image: "traefik:v3.0.0"
+    image: "traefik:v3.5.0"
     container_name: "traefik"
     restart: unless-stopped
     command:
@@ -13,15 +13,13 @@ services:
       - "--entrypoints.web.address=:80"
 
       - "--experimental.plugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
-      - "--experimental.plugins.bouncer.version=v1.3.0"
+      - "--experimental.plugins.bouncer.version=v1.5.0"
       # - "--experimental.localplugins.bouncer.modulename=github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
-      - ./LAPIKEY:/etc/traefik/LAPIKEY:ro
       - logs-tls-auth:/var/log/traefik
       - crowdsec-certs-tls-auth:/etc/traefik/crowdsec-certs
       # - ./../../:/plugins-local/src/github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin
-
     ports:
       - 8000:80
       - 8080:8080
@@ -29,7 +27,7 @@ services:
       - crowdsec
       - gencert
 
-# Use HTTPS scheme but with lapikey authentication
+  # Use HTTPS scheme but with lapikey authentication
   # whoami-foo:
   #   image: traefik/whoami
   #   container_name: "simple-service-foo"
@@ -46,34 +44,41 @@ services:
   #     - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdseclapischeme=https"
   #     - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecLapiTLSCertificateAuthorityFile=/etc/traefik/crowdsec-certs/inter.pem"
 
-# Use HTTPS scheme with TLS cert authentication
+  # Use HTTPS scheme with TLS cert authentication
   whoami-bar:
     image: traefik/whoami
     container_name: "simple-service-bar"
     restart: unless-stopped
     labels:
       - "traefik.enable=true"
-      - "traefik.http.routers.router-bar.rule=Path(`/bar`)"
+      - "traefik.http.routers.router-bar.rule=PathPrefix(`/bar`)"
       - "traefik.http.routers.router-bar.entrypoints=web"
       - "traefik.http.routers.router-bar.middlewares=crowdsec@docker"
       - "traefik.http.services.service-bar.loadbalancer.server.port=80"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.enabled=true"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.loglevel=DEBUG"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecMode=none"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdseclapischeme=https"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecappsecscheme=https"
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecAppsecTLSCertificateAuthorityFile=/etc/traefik/crowdsec-certs/inter.pem"
+
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecLapikey=40796d93c2958f9e58345514e67740e5="
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecLapiTLSCertificateAuthorityFile=/etc/traefik/crowdsec-certs/inter.pem"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecLapiTLSCertificateBouncerFile=/etc/traefik/crowdsec-certs/bouncer.pem"
       - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecLapiTLSCertificateBouncerKeyFile=/etc/traefik/crowdsec-certs/bouncer-key.pem"
-
+      # Enable AppSec
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecappsecenabled=true"
+      # Define AppSec host and port informations
+      - "traefik.http.middlewares.crowdsec.plugin.bouncer.crowdsecappsechost=crowdsec:7422"
   crowdsec:
-    image: crowdsecurity/crowdsec:v1.6.1-2
+    image: crowdsecurity/crowdsec:latest
     container_name: "crowdsec"
     restart: unless-stopped
     environment:
-      COLLECTIONS: crowdsecurity/traefik
       CUSTOM_HOSTNAME: crowdsec
       # whoami-foo is authenticating with api key over https
       # whoami-bar is authenticating with tls cert over https
-      BOUNCER_KEY_TRAEFIK_FOO: 40796d93c2958f9e58345514e67740e5
+      BOUNCER_KEY_TRAEFIK_FOO: 40796d93c2958f9e58345514e67740e5=
       LOCAL_API_URL: https://127.0.0.1:8080
       USE_TLS: "true"
       CERT_FILE: "/etc/crowdsec/certs/server.pem"
@@ -88,6 +93,7 @@ services:
       # DISABLE_AGENT: "true"
       # Disabled for the examples
       DISABLE_ONLINE_API: "true"
+      COLLECTIONS: crowdsecurity/traefik crowdsecurity/appsec-virtual-patching crowdsecurity/appsec-generic-rules
     volumes:
       - ./config/acquis.yaml:/etc/crowdsec/acquis.yaml
       # - ./config/config.yaml:/etc/crowdsec/config_local.yaml

examples/tls-auth/gencerts.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
 
-stdout=/out/res.log
+if [ -f "/out/inter-key.pem" ]; then
+  exit 0
+fi
 cfssl gencert --initca /in/ca.json 2>${stdout} | cfssljson --bare "/out/ca" && \
 # Generate an intermediate certificate that will be used to sign the client certificates
 cfssl gencert --initca /in/intermediate.json 2>${stdout} | cfssljson --bare "/out/inter"  && \

go.mod

@@ -1,8 +1,8 @@
 module github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin
 
-go 1.19
+go 1.22
 
 require (
 	github.com/leprosus/golang-ttl-map v1.1.7
-	github.com/maxlerebourg/simpleredis v1.0.9
+	github.com/maxlerebourg/simpleredis v1.0.12
 )

go.sum

@@ -1,4 +1,4 @@
 github.com/leprosus/golang-ttl-map v1.1.7 h1:cF4AAFDDnJTFSV+/42sKLhmMluvLdRlCGS2UaifH6UM=
 github.com/leprosus/golang-ttl-map v1.1.7/go.mod h1:4QWHJPeVBbrkhOhXdhCv9IEiyj/YzkO04/iexy4vSe0=
-github.com/maxlerebourg/simpleredis v1.0.9 h1:aj1hKaYPeOVE4Ksu3TV/zsreUDDWOpKXBAvoFysiqII=
-github.com/maxlerebourg/simpleredis v1.0.9/go.mod h1:/DH8zOK6kDskSqoX/m5CJJdNGfkIQZd/ERBJgytDDSk=
+github.com/maxlerebourg/simpleredis v1.0.12 h1:VsJpk2l8U9QqxOWbYnEXbrs7iSNZFm2fNmFvlxYlQNk=
+github.com/maxlerebourg/simpleredis v1.0.12/go.mod h1:lT4LX02SOsE9PxUcSrz1QW5ZnO86gPbaiYBxmtcXEls=

pkg/cache/cache.go

@@ -3,12 +3,12 @@
 package cache
 
 import (
+	"errors"
 	"fmt"
+	"log/slog"
 
 	ttl_map "github.com/leprosus/golang-ttl-map"
 	simpleredis "github.com/maxlerebourg/simpleredis"
-
-	logger "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger"
 )
 
 const (
@@ -22,6 +22,8 @@ const (
 	CaptchaDoneValue = "d"
 	// CacheMiss error string when cache is miss.
 	CacheMiss = "cache:miss"
+	// CacheUnreachable error string when cache is unreachable.
+	CacheUnreachable = "cache:unreachable"
 )
 
 //nolint:gochecknoglobals
@@ -38,7 +40,7 @@ func (localCache) get(key string) (string, error) {
 	if isCached && isValid && len(valueString) > 0 {
 		return valueString, nil
 	}
-	return "", fmt.Errorf(CacheMiss)
+	return "", errors.New(CacheMiss)
 }
 
 func (localCache) set(key, value string, duration int64) {
@@ -50,7 +52,7 @@ func (localCache) delete(key string) {
 }
 
 type redisCache struct {
-	log *logger.Log
+	log *slog.Logger
 }
 
 func (redisCache) get(key string) (string, error) {
@@ -59,21 +61,25 @@ func (redisCache) get(key string) (string, error) {
 	if err == nil && len(valueString) > 0 {
 		return valueString, nil
 	}
-	if err.Error() == simpleredis.RedisMiss {
-		return "", fmt.Errorf(CacheMiss)
+	errRedisMessage := err.Error()
+	if errRedisMessage == simpleredis.RedisMiss {
+		return "", errors.New(CacheMiss)
+	}
+	if errRedisMessage == simpleredis.RedisUnreachable {
+		return "", errors.New(CacheUnreachable)
 	}
 	return "", err
 }
 
 func (rc redisCache) set(key, value string, duration int64) {
 	if err := redis.Set(key, []byte(value), duration); err != nil {
-		rc.log.Error(fmt.Sprintf("cache:setDecisionRedisCache %s", err.Error()))
+		rc.log.Error("cache:setDecisionRedisCache" + err.Error())
 	}
 }
 
 func (rc redisCache) delete(key string) {
 	if err := redis.Del(key); err != nil {
-		rc.log.Error(fmt.Sprintf("cache:deleteDecisionRedisCache %s", err.Error()))
+		rc.log.Error("cache:deleteDecisionRedisCache " + err.Error())
 	}
 }
 
@@ -86,11 +92,11 @@ type cacheInterface interface {
 // Client Cache client.
 type Client struct {
 	cache cacheInterface
-	log   *logger.Log
+	log   *slog.Logger
 }
 
 // New Initialize cache client.
-func (c *Client) New(log *logger.Log, isRedis bool, host, pass, database string) {
+func (c *Client) New(log *slog.Logger, isRedis bool, host, pass, database string) {
 	c.log = log
 	if isRedis {
 		redis.Init(host, pass, database)

pkg/cache/cache_test.go

@@ -11,7 +11,7 @@ import (
 func Test_Get(t *testing.T) {
 	IPInCache := "10.0.0.10"
 	IPNotInCache := "10.0.0.20"
-	client := &Client{cache: &localCache{}, log: logger.New("INFO")}
+	client := &Client{cache: &localCache{}, log: logger.New("INFO", "")}
 	client.Set(IPInCache, BannedValue, 10)
 	type args struct {
 		clientIP string
@@ -47,7 +47,7 @@ func Test_Get(t *testing.T) {
 }
 
 func Test_Set(t *testing.T) {
-	client := &Client{cache: &localCache{}, log: logger.New("INFO")}
+	client := &Client{cache: &localCache{}, log: logger.New("INFO", "")}
 	IPInCache := "10.0.0.11"
 	type args struct {
 		clientIP string
@@ -88,7 +88,7 @@ func Test_Set(t *testing.T) {
 func Test_Delete(t *testing.T) {
 	IPInCache := "10.0.0.12"
 	IPNotInCache := "10.0.0.22"
-	client := &Client{cache: &localCache{}, log: logger.New("INFO")}
+	client := &Client{cache: &localCache{}, log: logger.New("INFO", "")}
 	client.Set(IPInCache, BannedValue, 10)
 	type args struct {
 		clientIP string

pkg/captcha/captcha.go

@@ -5,64 +5,75 @@ import (
 	"encoding/json"
 	"fmt"
 	"html/template"
+	"log/slog"
 	"net/http"
 	"net/url"
 	"strings"
 
 	cache "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/cache"
 	configuration "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/configuration"
-	logger "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger"
 )
 
 // Client Captcha client.
 type Client struct {
-	Valid              bool
-	provider           string
-	siteKey            string
-	secretKey          string
-	gracePeriodSeconds int64
-	captchaTemplate    *template.Template
-	cacheClient        *cache.Client
-	httpClient         *http.Client
-	log                *logger.Log
+	Valid                   bool
+	siteKey                 string
+	secretKey               string
+	remediationCustomHeader string
+	gracePeriodSeconds      int64
+	captchaTemplate         *template.Template
+	cacheClient             *cache.Client
+	httpClient              *http.Client
+	log                     *slog.Logger
+	infoProvider            *infoProvider
 }
 
+// Information for self-hosted provider.
 type infoProvider struct {
 	js       string
 	key      string
+	response string
 	validate string
 }
 
-var (
-	//nolint:gochecknoglobals
-	captcha = map[string]infoProvider{
-		configuration.HcaptchaProvider: {
-			js:       "https://hcaptcha.com/1/api.js",
-			key:      "h-captcha",
-			validate: "https://api.hcaptcha.com/siteverify",
-		},
-		configuration.RecaptchaProvider: {
-			js:       "https://www.google.com/recaptcha/api.js",
-			key:      "g-recaptcha",
-			validate: "https://www.google.com/recaptcha/api/siteverify",
-		},
-		configuration.TurnstileProvider: {
-			js:       "https://challenges.cloudflare.com/turnstile/v0/api.js",
-			key:      "cf-captcha",
-			validate: "https://challenges.cloudflare.com/turnstile/v0/siteverify",
-		},
-	}
-)
+//nolint:gochecknoglobals
+var infoProviders = map[string]*infoProvider{
+	configuration.HcaptchaProvider: {
+		js:       "https://hcaptcha.com/1/api.js",
+		key:      "h-captcha",
+		response: "h-captcha-response",
+		validate: "https://api.hcaptcha.com/siteverify",
+	},
+	configuration.RecaptchaProvider: {
+		js:       "https://www.google.com/recaptcha/api.js",
+		key:      "g-recaptcha",
+		response: "g-recaptcha-response",
+		validate: "https://www.google.com/recaptcha/api/siteverify",
+	},
+	configuration.TurnstileProvider: {
+		js:       "https://challenges.cloudflare.com/turnstile/v0/api.js",
+		key:      "cf-turnstile",
+		response: "cf-turnstile-response",
+		validate: "https://challenges.cloudflare.com/turnstile/v0/siteverify",
+	},
+}
 
 // New Initialize captcha client.
-func (c *Client) New(log *logger.Log, cacheClient *cache.Client, httpClient *http.Client, provider, siteKey, secretKey, captchaTemplatePath string, gracePeriodSeconds int64) error {
+func (c *Client) New(log *slog.Logger, cacheClient *cache.Client, httpClient *http.Client, provider, js, key, response, validate, siteKey, secretKey, remediationCustomHeader, captchaTemplatePath string, gracePeriodSeconds int64) error {
 	c.Valid = provider != ""
 	if !c.Valid {
 		return nil
 	}
+	var info *infoProvider
+	if provider == configuration.CustomProvider {
+		info = &infoProvider{js: js, key: key, response: response, validate: validate}
+	} else {
+		info = infoProviders[provider]
+	}
+	c.infoProvider = info
 	c.siteKey = siteKey
 	c.secretKey = secretKey
-	c.provider = provider
+	c.remediationCustomHeader = remediationCustomHeader
 	html, _ := configuration.GetHTMLTemplate(captchaTemplatePath)
 	c.captchaTemplate = html
 	c.gracePeriodSeconds = gracePeriodSeconds
@@ -76,31 +87,37 @@ func (c *Client) New(log *logger.Log, cacheClient *cache.Client, httpClient *htt
 func (c *Client) ServeHTTP(rw http.ResponseWriter, r *http.Request, remoteIP string) {
 	valid, err := c.Validate(r)
 	if err != nil {
-		c.log.Debug(fmt.Sprintf("captcha:ServeHTTP:validate %s", err.Error()))
+		c.log.Info("captcha:ServeHTTP:validate " + err.Error())
 		rw.WriteHeader(http.StatusBadRequest)
 		return
 	}
 	if valid {
 		c.log.Debug("captcha:ServeHTTP captcha:valid")
-		c.cacheClient.Set(fmt.Sprintf("%s_captcha", remoteIP), cache.CaptchaDoneValue, c.gracePeriodSeconds)
+		c.cacheClient.Set(remoteIP+"_captcha", cache.CaptchaDoneValue, c.gracePeriodSeconds)
+		if c.remediationCustomHeader != "" {
+			rw.Header().Set(c.remediationCustomHeader, "solved-captcha")
+		}
 		http.Redirect(rw, r, r.URL.String(), http.StatusFound)
 		return
 	}
 	rw.Header().Set("Content-Type", "text/html; charset=utf-8")
+	if c.remediationCustomHeader != "" {
+		rw.Header().Set(c.remediationCustomHeader, "captcha")
+	}
 	rw.WriteHeader(http.StatusOK)
 	err = c.captchaTemplate.Execute(rw, map[string]string{
 		"SiteKey":     c.siteKey,
-		"FrontendJS":  captcha[c.provider].js,
-		"FrontendKey": captcha[c.provider].key,
+		"FrontendJS":  c.infoProvider.js,
+		"FrontendKey": c.infoProvider.key,
 	})
 	if err != nil {
-		c.log.Info(fmt.Sprintf("captcha:ServeHTTP captchaTemplateServe %s", err.Error()))
+		c.log.Info("captcha:ServeHTTP captchaTemplateServe " + err.Error())
 	}
 }
 
 // Check Verify if the captcha is already done.
 func (c *Client) Check(remoteIP string) bool {
-	value, _ := c.cacheClient.Get(fmt.Sprintf("%s_captcha", remoteIP))
+	value, _ := c.cacheClient.Get(remoteIP + "_captcha")
 	passed := value == cache.CaptchaDoneValue
 	c.log.Debug(fmt.Sprintf("captcha:Check ip:%s pass:%v", remoteIP, passed))
 	return passed
@@ -113,10 +130,10 @@ type responseProvider struct {
 // Validate Verify the captcha from provider API.
 func (c *Client) Validate(r *http.Request) (bool, error) {
 	if r.Method != http.MethodPost {
-		c.log.Debug(fmt.Sprintf("captcha:Validate invalid method: %s", r.Method))
+		c.log.Debug("captcha:Validate invalid method: " + r.Method)
 		return false, nil
 	}
-	var response = r.FormValue(fmt.Sprintf("%s-response", captcha[c.provider].key))
+	var response = r.FormValue(c.infoProvider.response)
 	if response == "" {
 		c.log.Debug("captcha:Validate no captcha response found in request")
 		return false, nil
@@ -124,16 +141,16 @@ func (c *Client) Validate(r *http.Request) (bool, error) {
 	var body = url.Values{}
 	body.Add("secret", c.secretKey)
 	body.Add("response", response)
-	res, err := c.httpClient.PostForm(captcha[c.provider].validate, body)
+	res, err := c.httpClient.PostForm(c.infoProvider.validate, body)
 	if err != nil {
 		return false, err
 	}
 	defer func() {
 		if err = res.Body.Close(); err != nil {
-			c.log.Error(fmt.Sprintf("captcha:Validate %s", err.Error()))
+			c.log.Error("captcha:Validate " + err.Error())
 		}
 	}()
-	if !strings.Contains(res.Header.Get("content-type"), "application/json") {
+	if !strings.Contains(res.Header.Get("Content-Type"), "application/json") {
 		c.log.Debug("captcha:Validate responseType:noJson")
 		return false, nil
 	}

pkg/configuration/configuration.go

@@ -4,8 +4,10 @@ package configuration
 import (
 	"crypto/tls"
 	"crypto/x509"
+	"errors"
 	"fmt"
 	"html/template"
+	"log/slog"
 	"net/http"
 	"net/url"
 	"os"
@@ -15,7 +17,6 @@ import (
 	"strings"
 
 	ip "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/ip"
-	logger "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger"
 )
 
 // Enums for crowdsec mode.
@@ -27,55 +28,88 @@ const (
 	AppsecMode        = "appsec"
 	HTTPS             = "https"
 	HTTP              = "http"
+	LogDEBUG          = "DEBUG"
+	LogINFO           = "INFO"
+	LogWARN           = "WARN"
+	LogERROR          = "ERROR"
+	ReasonTECH        = "TECHNICAL_ISSUE"
+	ReasonLAPI        = "LAPI"
+	ReasonAPPSEC      = "APPSEC"
 	HcaptchaProvider  = "hcaptcha"
 	RecaptchaProvider = "recaptcha"
 	TurnstileProvider = "turnstile"
+	CustomProvider    = "custom"
 )
 
 // Config the plugin configuration.
 type Config struct {
-	Enabled                                  bool     `json:"enabled,omitempty"`
-	LogLevel                                 string   `json:"logLevel,omitempty"`
-	CrowdsecMode                             string   `json:"crowdsecMode,omitempty"`
-	CrowdsecAppsecEnabled                    bool     `json:"crowdsecAppsecEnabled,omitempty"`
-	CrowdsecAppsecHost                       string   `json:"crowdsecAppsecHost,omitempty"`
-	CrowdsecAppsecFailureBlock               bool     `json:"crowdsecAppsecFailureBlock,omitempty"`
-	CrowdsecLapiScheme                       string   `json:"crowdsecLapiScheme,omitempty"`
-	CrowdsecLapiHost                         string   `json:"crowdsecLapiHost,omitempty"`
-	CrowdsecLapiKey                          string   `json:"crowdsecLapiKey,omitempty"`
-	CrowdsecLapiKeyFile                      string   `json:"crowdsecLapiKeyFile,omitempty"`
-	CrowdsecLapiTLSInsecureVerify            bool     `json:"crowdsecLapiTlsInsecureVerify,omitempty"`
-	CrowdsecLapiTLSCertificateAuthority      string   `json:"crowdsecLapiTlsCertificateAuthority,omitempty"`
-	CrowdsecLapiTLSCertificateAuthorityFile  string   `json:"crowdsecLapiTlsCertificateAuthorityFile,omitempty"`
-	CrowdsecLapiTLSCertificateBouncer        string   `json:"crowdsecLapiTlsCertificateBouncer,omitempty"`
-	CrowdsecLapiTLSCertificateBouncerFile    string   `json:"crowdsecLapiTlsCertificateBouncerFile,omitempty"`
-	CrowdsecLapiTLSCertificateBouncerKey     string   `json:"crowdsecLapiTlsCertificateBouncerKey,omitempty"`
-	CrowdsecLapiTLSCertificateBouncerKeyFile string   `json:"crowdsecLapiTlsCertificateBouncerKeyFile,omitempty"`
-	CrowdsecCapiMachineID                    string   `json:"crowdsecCapiMachineId,omitempty"`
-	CrowdsecCapiMachineIDFile                string   `json:"crowdsecCapiMachineIdFile,omitempty"`
-	CrowdsecCapiPassword                     string   `json:"crowdsecCapiPassword,omitempty"`
-	CrowdsecCapiPasswordFile                 string   `json:"crowdsecCapiPasswordFile,omitempty"`
-	CrowdsecCapiScenarios                    []string `json:"crowdsecCapiScenarios,omitempty"`
-	UpdateIntervalSeconds                    int64    `json:"updateIntervalSeconds,omitempty"`
-	UpdateMaxFailure                         int      `json:"updateMaxFailure,omitempty"`
-	DefaultDecisionSeconds                   int64    `json:"defaultDecisionSeconds,omitempty"`
-	HTTPTimeoutSeconds                       int64    `json:"httpTimeoutSeconds,omitempty"`
-	ForwardedHeadersCustomName               string   `json:"forwardedHeadersCustomName,omitempty"`
-	ForwardedHeadersTrustedIPs               []string `json:"forwardedHeadersTrustedIps,omitempty"`
-	ClientTrustedIPs                         []string `json:"clientTrustedIps,omitempty"`
-	RedisCacheEnabled                        bool     `json:"redisCacheEnabled,omitempty"`
-	RedisCacheHost                           string   `json:"redisCacheHost,omitempty"`
-	RedisCachePassword                       string   `json:"redisCachePassword,omitempty"`
-	RedisCachePasswordFile                   string   `json:"redisCachePasswordFile,omitempty"`
-	RedisCacheDatabase                       string   `json:"redisCacheDatabase,omitempty"`
-	BanHTMLFilePath                          string   `json:"banHtmlFilePath,omitempty"`
-	CaptchaHTMLFilePath                      string   `json:"captchaHtmlFilePath,omitempty"`
-	CaptchaProvider                          string   `json:"captchaProvider,omitempty"`
-	CaptchaSiteKey                           string   `json:"captchaSiteKey,omitempty"`
-	CaptchaSiteKeyFile                       string   `json:"captchaSiteKeyFile,omitempty"`
-	CaptchaSecretKey                         string   `json:"captchaSecretKey,omitempty"`
-	CaptchaSecretKeyFile                     string   `json:"captchaSecretKeyFile,omitempty"`
-	CaptchaGracePeriodSeconds                int64    `json:"captchaGracePeriodSeconds,omitempty"`
+	Enabled                                    bool     `json:"enabled,omitempty"`
+	LogLevel                                   string   `json:"logLevel,omitempty"`
+	LogFormat                                  string   `json:"logFormat,omitempty"`
+	LogFilePath                                string   `json:"logFilePath,omitempty"`
+	CrowdsecMode                               string   `json:"crowdsecMode,omitempty"`
+	CrowdsecAppsecEnabled                      bool     `json:"crowdsecAppsecEnabled,omitempty"`
+	CrowdsecAppsecScheme                       string   `json:"crowdsecAppsecScheme,omitempty"`
+	CrowdsecAppsecHost                         string   `json:"crowdsecAppsecHost,omitempty"`
+	CrowdsecAppsecPath                         string   `json:"crowdsecAppsecPath,omitempty"`
+	CrowdsecAppsecKey                          string   `json:"crowdsecAppsecKey,omitempty"`
+	CrowdsecAppsecKeyFile                      string   `json:"crowdsecAppsecKeyFile,omitempty"`
+	CrowdsecAppsecTLSInsecureVerify            bool     `json:"crowdsecAppsecTlsInsecureVerify,omitempty"`
+	CrowdsecAppsecTLSCertificateAuthority      string   `json:"crowdsecAppsecTlsCertificateAuthority,omitempty"`
+	CrowdsecAppsecTLSCertificateAuthorityFile  string   `json:"crowdsecAppsecTlsCertificateAuthorityFile,omitempty"`
+	CrowdsecAppsecTLSCertificateBouncer        string   `json:"crowdsecAppsecTlsCertificateBouncer,omitempty"`
+	CrowdsecAppsecTLSCertificateBouncerFile    string   `json:"crowdsecAppsecTlsCertificateBouncerFile,omitempty"`
+	CrowdsecAppsecTLSCertificateBouncerKey     string   `json:"crowdsecAppsecTlsCertificateBouncerKey,omitempty"`
+	CrowdsecAppsecTLSCertificateBouncerKeyFile string   `json:"crowdsecAppsecTlsCertificateBouncerKeyFile,omitempty"`
+	CrowdsecAppsecFailureBlock                 bool     `json:"crowdsecAppsecFailureBlock,omitempty"`
+	CrowdsecAppsecUnreachableBlock             bool     `json:"crowdsecAppsecUnreachableBlock,omitempty"`
+	CrowdsecAppsecBodyLimit                    int64    `json:"crowdsecAppsecBodyLimit,omitempty"`
+	CrowdsecLapiScheme                         string   `json:"crowdsecLapiScheme,omitempty"`
+	CrowdsecLapiHost                           string   `json:"crowdsecLapiHost,omitempty"`
+	CrowdsecLapiPath                           string   `json:"crowdsecLapiPath,omitempty"`
+	CrowdsecLapiKey                            string   `json:"crowdsecLapiKey,omitempty"`
+	CrowdsecLapiKeyFile                        string   `json:"crowdsecLapiKeyFile,omitempty"`
+	CrowdsecLapiTLSInsecureVerify              bool     `json:"crowdsecLapiTlsInsecureVerify,omitempty"`
+	CrowdsecLapiTLSCertificateAuthority        string   `json:"crowdsecLapiTlsCertificateAuthority,omitempty"`
+	CrowdsecLapiTLSCertificateAuthorityFile    string   `json:"crowdsecLapiTlsCertificateAuthorityFile,omitempty"`
+	CrowdsecLapiTLSCertificateBouncer          string   `json:"crowdsecLapiTlsCertificateBouncer,omitempty"`
+	CrowdsecLapiTLSCertificateBouncerFile      string   `json:"crowdsecLapiTlsCertificateBouncerFile,omitempty"`
+	CrowdsecLapiTLSCertificateBouncerKey       string   `json:"crowdsecLapiTlsCertificateBouncerKey,omitempty"`
+	CrowdsecLapiTLSCertificateBouncerKeyFile   string   `json:"crowdsecLapiTlsCertificateBouncerKeyFile,omitempty"`
+	CrowdsecCapiMachineID                      string   `json:"crowdsecCapiMachineId,omitempty"`
+	CrowdsecCapiMachineIDFile                  string   `json:"crowdsecCapiMachineIdFile,omitempty"`
+	CrowdsecCapiPassword                       string   `json:"crowdsecCapiPassword,omitempty"`
+	CrowdsecCapiPasswordFile                   string   `json:"crowdsecCapiPasswordFile,omitempty"`
+	CrowdsecCapiScenarios                      []string `json:"crowdsecCapiScenarios,omitempty"`
+	UpdateIntervalSeconds                      int64    `json:"updateIntervalSeconds,omitempty"`
+	MetricsUpdateIntervalSeconds               int64    `json:"metricsUpdateIntervalSeconds,omitempty"`
+	UpdateMaxFailure                           int64    `json:"updateMaxFailure,omitempty"`
+	DefaultDecisionSeconds                     int64    `json:"defaultDecisionSeconds,omitempty"`
+	RemediationStatusCode                      int      `json:"remediationStatusCode,omitempty"`
+	HTTPTimeoutSeconds                         int64    `json:"httpTimeoutSeconds,omitempty"`
+	TraceHeadersCustomName                     string   `json:"traceHeadersCustomName,omitempty"`
+	RemediationHeadersCustomName               string   `json:"remediationHeadersCustomName,omitempty"`
+	ForwardedHeadersCustomName                 string   `json:"forwardedHeadersCustomName,omitempty"`
+	ForwardedHeadersTrustedIPs                 []string `json:"forwardedHeadersTrustedIps,omitempty"`
+	ClientTrustedIPs                           []string `json:"clientTrustedIps,omitempty"`
+	RedisCacheEnabled                          bool     `json:"redisCacheEnabled,omitempty"`
+	RedisCacheHost                             string   `json:"redisCacheHost,omitempty"`
+	RedisCachePassword                         string   `json:"redisCachePassword,omitempty"`
+	RedisCachePasswordFile                     string   `json:"redisCachePasswordFile,omitempty"`
+	RedisCacheDatabase                         string   `json:"redisCacheDatabase,omitempty"`
+	RedisCacheUnreachableBlock                 bool     `json:"redisCacheUnreachableBlock,omitempty"`
+	BanHTMLFilePath                            string   `json:"banHtmlFilePath,omitempty"`
+	CaptchaHTMLFilePath                        string   `json:"captchaHtmlFilePath,omitempty"`
+	CaptchaProvider                            string   `json:"captchaProvider,omitempty"`
+	CaptchaCustomJsURL                         string   `json:"captchaCustomJsUrl,omitempty"`
+	CaptchaCustomValidateURL                   string   `json:"captchaCustomValidateUrl,omitempty"`
+	CaptchaCustomKey                           string   `json:"captchaCustomKey,omitempty"`
+	CaptchaCustomResponse                      string   `json:"captchaCustomResponse,omitempty"`
+	CaptchaSiteKey                             string   `json:"captchaSiteKey,omitempty"`
+	CaptchaSiteKeyFile                         string   `json:"captchaSiteKeyFile,omitempty"`
+	CaptchaSecretKey                           string   `json:"captchaSecretKey,omitempty"`
+	CaptchaSecretKeyFile                       string   `json:"captchaSecretKeyFile,omitempty"`
+	CaptchaGracePeriodSeconds                  int64    `json:"captchaGracePeriodSeconds,omitempty"`
 }
 
 func contains(source []string, target string) bool {
@@ -90,33 +124,51 @@ func contains(source []string, target string) bool {
 // New creates the default plugin configuration.
 func New() *Config {
 	return &Config{
-		Enabled:                       false,
-		LogLevel:                      "INFO",
-		CrowdsecMode:                  LiveMode,
-		CrowdsecAppsecEnabled:         false,
-		CrowdsecAppsecHost:            "crowdsec:7422",
-		CrowdsecAppsecFailureBlock:    true,
-		CrowdsecLapiScheme:            HTTP,
-		CrowdsecLapiHost:              "crowdsec:8080",
-		CrowdsecLapiKey:               "",
-		CrowdsecLapiTLSInsecureVerify: false,
-		UpdateIntervalSeconds:         60,
-		UpdateMaxFailure:              0,
-		DefaultDecisionSeconds:        60,
-		HTTPTimeoutSeconds:            10,
-		CaptchaProvider:               "",
-		CaptchaSiteKey:                "",
-		CaptchaSecretKey:              "",
-		CaptchaGracePeriodSeconds:     1800,
-		CaptchaHTMLFilePath:           "/captcha.html",
-		BanHTMLFilePath:               "",
-		ForwardedHeadersCustomName:    "X-Forwarded-For",
-		ForwardedHeadersTrustedIPs:    []string{},
-		ClientTrustedIPs:              []string{},
-		RedisCacheEnabled:             false,
-		RedisCacheHost:                "redis:6379",
-		RedisCachePassword:            "",
-		RedisCacheDatabase:            "",
+		Enabled:                         false,
+		LogLevel:                        LogINFO,
+		LogFormat:                       "common",
+		LogFilePath:                     "",
+		CrowdsecMode:                    LiveMode,
+		CrowdsecAppsecEnabled:           false,
+		CrowdsecAppsecFailureBlock:      true,
+		CrowdsecAppsecUnreachableBlock:  true,
+		CrowdsecAppsecBodyLimit:         10485760,
+		CrowdsecAppsecScheme:            "",
+		CrowdsecAppsecHost:              "crowdsec:7422",
+		CrowdsecAppsecPath:              "/",
+		CrowdsecAppsecKey:               "",
+		CrowdsecAppsecTLSInsecureVerify: false,
+		CrowdsecLapiScheme:              HTTP,
+		CrowdsecLapiHost:                "crowdsec:8080",
+		CrowdsecLapiPath:                "/",
+		CrowdsecLapiKey:                 "",
+		CrowdsecLapiTLSInsecureVerify:   false,
+		UpdateIntervalSeconds:           60,
+		MetricsUpdateIntervalSeconds:    600,
+		UpdateMaxFailure:                0,
+		DefaultDecisionSeconds:          60,
+		RemediationStatusCode:           http.StatusForbidden,
+		HTTPTimeoutSeconds:              10,
+		CaptchaProvider:                 "",
+		CaptchaCustomJsURL:              "",
+		CaptchaCustomValidateURL:        "",
+		CaptchaCustomKey:                "",
+		CaptchaCustomResponse:           "",
+		CaptchaSiteKey:                  "",
+		CaptchaSecretKey:                "",
+		CaptchaGracePeriodSeconds:       1800,
+		CaptchaHTMLFilePath:             "/captcha.html",
+		BanHTMLFilePath:                 "",
+		TraceHeadersCustomName:          "",
+		RemediationHeadersCustomName:    "",
+		ForwardedHeadersCustomName:      "X-Forwarded-For",
+		ForwardedHeadersTrustedIPs:      []string{},
+		ClientTrustedIPs:                []string{},
+		RedisCacheEnabled:               false,
+		RedisCacheHost:                  "redis:6379",
+		RedisCachePassword:              "",
+		RedisCacheDatabase:              "",
+		RedisCacheUnreachableBlock:      true,
 	}
 }
 
@@ -124,7 +176,7 @@ func New() *Config {
 func GetVariable(config *Config, key string) (string, error) {
 	value := ""
 	object := reflect.Indirect(reflect.ValueOf(config))
-	field := object.FieldByName(fmt.Sprintf("%sFile", key))
+	field := object.FieldByName(key + "File")
 	// Here linter say you should simplify this code, but lets not, performance is important not clarity and complexity
 	fp := field.String()
 	if fp != "" {
@@ -151,7 +203,7 @@ func GetVariable(config *Config, key string) (string, error) {
 func GetHTMLTemplate(path string) (*template.Template, error) {
 	var err error
 	if path == "" {
-		return nil, fmt.Errorf("no html template provided")
+		return nil, errors.New("no html template provided")
 	}
 	//nolint:gosec
 	b, err := os.ReadFile(path)
@@ -169,15 +221,19 @@ func GetHTMLTemplate(path string) (*template.Template, error) {
 // ValidateParams validate all the param gave by user.
 //
 //nolint:gocyclo,gocognit
-func ValidateParams(config *Config) error {
+func ValidateParams(config *Config, log *slog.Logger) error {
 	if err := validateParamsRequired(config); err != nil {
 		return err
 	}
 
-	if err := validateParamsIPs(config.ForwardedHeadersTrustedIPs, "ForwardedHeadersTrustedIPs"); err != nil {
+	if err := validateCaptcha(config); err != nil {
 		return err
 	}
-	if err := validateParamsIPs(config.ClientTrustedIPs, "ClientTrustedIPs"); err != nil {
+
+	if err := validateParamsIPs(log, config.ForwardedHeadersTrustedIPs, "ForwardedHeadersTrustedIPs"); err != nil {
+		return err
+	}
+	if err := validateParamsIPs(log, config.ClientTrustedIPs, "ClientTrustedIPs"); err != nil {
 		return err
 	}
 
@@ -212,11 +268,11 @@ func ValidateParams(config *Config) error {
 		}
 	}
 
-	if err := validateURL("CrowdsecLapi", config.CrowdsecLapiScheme, config.CrowdsecLapiHost); err != nil {
+	if err := validateURL("CrowdsecLapi", config.CrowdsecLapiScheme, config.CrowdsecLapiHost, config.CrowdsecLapiPath); err != nil {
 		return err
 	}
 
-	if err := validateURL("CrowdsecAppsec", config.CrowdsecLapiScheme, config.CrowdsecAppsecHost); err != nil {
+	if err := validateURL("CrowdsecAppsec", config.CrowdsecLapiScheme, config.CrowdsecAppsecHost, config.CrowdsecAppsecPath); err != nil {
 		return err
 	}
 
@@ -224,6 +280,10 @@ func ValidateParams(config *Config) error {
 	if err != nil {
 		return err
 	}
+	appsecKey, err := GetVariable(config, "CrowdsecAppsecKey")
+	if err != nil {
+		return err
+	}
 	certBouncer, err := GetVariable(config, "CrowdsecLapiTLSCertificateBouncer")
 	if err != nil {
 		return err
@@ -232,12 +292,21 @@ func ValidateParams(config *Config) error {
 	if err != nil {
 		return err
 	}
+
 	// We need to either have crowdsecLapiKey defined or the BouncerCert and Bouncerkey
-	if lapiKey == "" && (certBouncer == "" || certBouncerKey == "") {
-		return fmt.Errorf("CrowdsecLapiKey || (CrowdsecLapiTLSCertificateBouncer && CrowdsecLapiTLSCertificateBouncerKey): cannot be all empty")
+	if lapiKey == "" && (certBouncer == "" || certBouncerKey == "") && config.CrowdsecMode != AppsecMode {
+		return errors.New("CrowdsecLapiKey || (CrowdsecLapiTLSCertificateBouncer && CrowdsecLapiTLSCertificateBouncerKey): cannot be all empty")
 	} else if lapiKey != "" && (certBouncer == "" || certBouncerKey == "") {
 		lapiKey = strings.TrimSpace(lapiKey)
-		if err = validateParamsAPIKey(lapiKey); err != nil {
+		if err = validateParamsAPIKey(lapiKey, "CrowdsecLapiKey"); err != nil {
+			return err
+		}
+	}
+
+	// Validate CrowdsecAppsecKey if provided
+	if appsecKey != "" {
+		appsecKey = strings.TrimSpace(appsecKey)
+		if err = validateParamsAPIKey(appsecKey, "CrowdsecAppsecKey"); err != nil {
 			return err
 		}
 	}
@@ -249,14 +318,25 @@ func ValidateParams(config *Config) error {
 		}
 	}
 
+	// Check logging configuration
+	// to upper allow of anycase of log level
+	if !contains([]string{LogDEBUG, LogINFO, LogWARN, LogERROR}, strings.ToUpper(config.LogLevel)) {
+		return fmt.Errorf("LogLevel should be one of (%s,%s,%s,%s)", LogDEBUG, LogINFO, LogWARN, LogERROR)
+	}
+	if config.LogFilePath != "" {
+		_, err = os.OpenFile(filepath.Clean(config.LogFilePath), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600)
+		if err != nil {
+			return fmt.Errorf("LogFilePath is not writable %w", err)
+		}
+	}
 	return nil
 }
 
-func validateURL(variable, scheme, host string) error {
-	// This only check that the format of the URL scheme://host is correct and do not make requests
-	testURL := url.URL{Scheme: scheme, Host: host}
+func validateURL(variable, scheme, host, path string) error {
+	// This only check that the format of the URL scheme://host/path is correct and do not make requests
+	testURL := url.URL{Scheme: scheme, Host: host, Path: path}
 	if _, err := http.NewRequest(http.MethodGet, testURL.String(), nil); err != nil {
-		return fmt.Errorf("CrowdsecLapiScheme://%sHost: '%v://%v' must be an URL", variable, scheme, host)
+		return fmt.Errorf("CrowdsecLapiScheme://%sHost: '%v://%v%v' must be a valid URL", variable, scheme, host, path)
 	}
 	return nil
 }
@@ -265,10 +345,10 @@ func validateURL(variable, scheme, host string) error {
 // field name. RFC 7230 says:
 // valid ! # $ % & ' * + - . ^ _ ` | ~ DIGIT ALPHA
 // See https://httpwg.github.io/specs/rfc7230.html#rule.token.separators
-func validateParamsAPIKey(lapiKey string) error {
+func validateParamsAPIKey(key string, paramName string) error {
 	reg := regexp.MustCompile("^[a-zA-Z0-9 !#$%&'*+-.^_`|~=/]*$")
-	if !reg.Match([]byte(lapiKey)) {
-		return fmt.Errorf("CrowdsecLapiKey doesn't valid this regexp: '/%s/'", reg.String())
+	if !reg.MatchString(key) {
+		return fmt.Errorf("%s doesn't validate this regexp: '/%s/'", paramName, reg.String())
 	}
 	return nil
 }
@@ -279,25 +359,43 @@ func validateParamsTLS(config *Config) error {
 		return err
 	}
 	if certAuth == "" {
-		return fmt.Errorf("CrowdsecLapiTLSCertificateAuthority must be specified when CrowdsecLapiScheme='https' and CrowdsecLapiTLSInsecureVerify=false")
+		return errors.New("CrowdsecLapiTLSCertificateAuthority must be specified when CrowdsecLapiScheme='https' and CrowdsecLapiTLSInsecureVerify=false")
 	}
 	tlsConfig := new(tls.Config)
 	tlsConfig.RootCAs = x509.NewCertPool()
 	if !tlsConfig.RootCAs.AppendCertsFromPEM([]byte(certAuth)) {
-		return fmt.Errorf("failed parsing pem file")
+		return errors.New("failed parsing pem file")
 	}
 	return nil
 }
 
-func validateParamsIPs(listIP []string, key string) error {
+func validateParamsIPs(log *slog.Logger, listIP []string, key string) error {
 	if len(listIP) > 0 {
-		if _, err := ip.NewChecker(logger.New("INFO"), listIP); err != nil {
+		if _, err := ip.NewChecker(log, listIP); err != nil {
 			return fmt.Errorf("%s must be a list of IP/CIDR :%w", key, err)
 		}
 	}
 	return nil
 }
 
+func validateCaptcha(config *Config) error {
+	if !contains([]string{"", HcaptchaProvider, RecaptchaProvider, TurnstileProvider, CustomProvider}, config.CaptchaProvider) {
+		return fmt.Errorf("CaptchaProvider: must be one of '%s', '%s', '%s' or '%s'", HcaptchaProvider, RecaptchaProvider, TurnstileProvider, CustomProvider)
+	}
+	if config.CaptchaProvider == CustomProvider {
+		if config.CaptchaCustomKey == "" || config.CaptchaCustomResponse == "" || config.CaptchaCustomValidateURL == "" || config.CaptchaCustomJsURL == "" {
+			return fmt.Errorf(
+				"CaptchaProvider: provider is custom, captchaCustom variables must be filled: CaptchaCustomKey:%s, CaptchaCustomResponse:%s, CaptchaCustomValidateURL:%s, CaptchaCustomJsURL:%s",
+				config.CaptchaCustomKey,
+				config.CaptchaCustomResponse,
+				config.CaptchaCustomValidateURL,
+				config.CaptchaCustomJsURL,
+			)
+		}
+	}
+	return nil
+}
+
 func validateParamsRequired(config *Config) error {
 	requiredStrings := map[string]string{
 		"CrowdsecLapiScheme": config.CrowdsecLapiScheme,
@@ -306,53 +404,66 @@ func validateParamsRequired(config *Config) error {
 	}
 	for key, val := range requiredStrings {
 		if len(val) == 0 {
-			return fmt.Errorf("%v: cannot be empty", key)
+			return errors.New(key + ": cannot be empty")
 		}
 	}
-	requiredInt := map[string]int64{
+	requiredInt0 := map[string]int64{
+		"CrowdsecAppsecBodyLimit":      config.CrowdsecAppsecBodyLimit,
+		"MetricsUpdateIntervalSeconds": config.MetricsUpdateIntervalSeconds,
+	}
+	for key, val := range requiredInt0 {
+		if val < 0 {
+			return errors.New(key + ": cannot be less than 0")
+		}
+	}
+	requiredInt1 := map[string]int64{
 		"UpdateIntervalSeconds":     config.UpdateIntervalSeconds,
 		"DefaultDecisionSeconds":    config.DefaultDecisionSeconds,
 		"HTTPTimeoutSeconds":        config.HTTPTimeoutSeconds,
 		"CaptchaGracePeriodSeconds": config.CaptchaGracePeriodSeconds,
 	}
-	for key, val := range requiredInt {
+	for key, val := range requiredInt1 {
 		if val < 1 {
-			return fmt.Errorf("%v: cannot be less than 1", key)
+			return errors.New(key + ": cannot be less than 1")
 		}
 	}
 	if config.UpdateMaxFailure < -1 {
-		return fmt.Errorf("UpdateMaxFailure: cannot be less than -1")
+		return errors.New("UpdateMaxFailure: cannot be less than -1")
+	}
+	if config.CrowdsecAppsecBodyLimit < 0 {
+		return errors.New("CrowdsecAppsecBodyLimit: cannot be less than 0")
+	}
+	if config.RemediationStatusCode < 100 || config.RemediationStatusCode >= 600 {
+		return errors.New("RemediationStatusCode: cannot be less than 100 and more than 600")
 	}
 
 	if !contains([]string{NoneMode, LiveMode, StreamMode, AloneMode, AppsecMode}, config.CrowdsecMode) {
-		return fmt.Errorf("CrowdsecMode: must be one of 'none', 'live', 'stream', 'alone' or 'appsec'")
+		return errors.New("CrowdsecMode: must be one of 'none', 'live', 'stream', 'alone' or 'appsec'")
 	}
 	if !contains([]string{HTTP, HTTPS}, config.CrowdsecLapiScheme) {
-		return fmt.Errorf("CrowdsecLapiScheme: must be one of 'http' or 'https'")
+		return errors.New("CrowdsecLapiScheme: must be one of 'http' or 'https'")
 	}
-	if !contains([]string{"", HcaptchaProvider, RecaptchaProvider, TurnstileProvider}, config.CaptchaProvider) {
-		return fmt.Errorf("CrowdsecLapiScheme: must be one of 'hcaptcha', 'recaptcha' or 'turnstile'")
+	if !contains([]string{HTTP, HTTPS, ""}, config.CrowdsecAppsecScheme) {
+		return errors.New("CrowdsecAppsecScheme: must be one of 'http' or 'https'")
 	}
 	return nil
 }
 
-// GetTLSConfigCrowdsec get TLS config from Config.
-//
-//nolint:nestif
-func GetTLSConfigCrowdsec(config *Config, log *logger.Log) (*tls.Config, error) {
+func getTLSConfig(config *Config, log *slog.Logger, prefix, scheme string, insecureVerify bool) (*tls.Config, error) {
 	tlsConfig := new(tls.Config)
 	tlsConfig.RootCAs = x509.NewCertPool()
-	//nolint:gocritic
-	if config.CrowdsecLapiScheme != HTTPS {
-		log.Debug("getTLSConfigCrowdsec:CrowdsecLapiScheme https:no")
+	if scheme != HTTPS {
+		log.Debug("getTLSConfig:" + prefix + "Scheme https:no")
 		return tlsConfig, nil
-	} else if config.CrowdsecLapiTLSInsecureVerify {
+	}
+	//nolint:nestif
+	if insecureVerify {
 		tlsConfig.InsecureSkipVerify = true
-		log.Debug("getTLSConfigCrowdsec:CrowdsecLapiTLSInsecureVerify tlsInsecure:true")
+		log.Debug("getTLSConfig:" + prefix + "TLSInsecureVerify tlsInsecure:true")
 		// If we return here and still want to use client auth this won't work
 		// return tlsConfig, nil
 	} else {
-		certAuthority, err := GetVariable(config, "CrowdsecLapiTLSCertificateAuthority")
+		certAuthority, err := GetVariable(config, prefix+"TLSCertificateAuthority")
 		if err != nil {
 			return nil, err
 		}
@@ -360,17 +471,16 @@ func GetTLSConfigCrowdsec(config *Config, log *logger.Log) (*tls.Config, error)
 			if !tlsConfig.RootCAs.AppendCertsFromPEM([]byte(certAuthority)) {
 				// here we return because if CrowdsecLapiTLSInsecureVerify is false
 				// and CA not load, we can't communicate with https
-				return nil, fmt.Errorf("getTLSConfigCrowdsec:cannot load CA and verify cert is enabled")
+				return nil, errors.New("getTLSConfig:" + prefix + " cannot load CA and verify cert is enabled")
 			}
-			log.Debug("getTLSConfigCrowdsec:CrowdsecLapiTLSCertificateAuthority CA added successfully")
+			log.Debug("getTLSConfig:" + prefix + "TLSCertificateAuthority CA added successfully")
 		}
 	}
-
-	certBouncer, err := GetVariable(config, "CrowdsecLapiTLSCertificateBouncer")
+	certBouncer, err := GetVariable(config, prefix+"TLSCertificateBouncer")
 	if err != nil {
 		return nil, err
 	}
-	certBouncerKey, err := GetVariable(config, "CrowdsecLapiTLSCertificateBouncerKey")
+	certBouncerKey, err := GetVariable(config, prefix+"TLSCertificateBouncerKey")
 	if err != nil {
 		return nil, err
 	}
@@ -385,3 +495,14 @@ func GetTLSConfigCrowdsec(config *Config, log *logger.Log) (*tls.Config, error)
 
 	return tlsConfig, nil
 }
+
+// GetTLSConfigCrowdsec get TLS config from Config.
+func GetTLSConfigCrowdsec(config *Config, log *slog.Logger, isAppsec bool) (*tls.Config, error) {
+	var prefix string
+	if isAppsec && config.CrowdsecAppsecScheme != "" {
+		prefix = "CrowdsecAppsec"
+		return getTLSConfig(config, log, prefix, config.CrowdsecAppsecScheme, config.CrowdsecAppsecTLSInsecureVerify)
+	}
+	prefix = "CrowdsecLapi"
+	return getTLSConfig(config, log, prefix, config.CrowdsecLapiScheme, config.CrowdsecLapiTLSInsecureVerify)
+}

pkg/configuration/configuration_test.go

@@ -72,6 +72,7 @@ func Test_GetVariable(t *testing.T) {
 }
 
 func Test_ValidateParams(t *testing.T) {
+	log := logger.New("INFO", "")
 	cfg1 := New()
 	cfg1.CrowdsecLapiKey = "test\n\n"
 	cfg2 := New()
@@ -85,8 +86,14 @@ func Test_ValidateParams(t *testing.T) {
 	cfg6 := getMinimalConfig()
 	cfg6.CrowdsecLapiScheme = HTTPS
 	cfg6.CrowdsecLapiTLSInsecureVerify = true
+	cfg7 := getMinimalConfig()
+	cfg7.CrowdsecLapiScheme = HTTPS
 	cfg8 := getMinimalConfig()
-	cfg8.CrowdsecLapiScheme = HTTPS
+	cfg8.LogLevel = LogINFO
+	cfg9 := getMinimalConfig()
+	cfg9.LogLevel = "info"
+	cfg10 := getMinimalConfig()
+	cfg10.LogLevel = "Warning"
 	type args struct {
 		config *Config
 	}
@@ -104,11 +111,14 @@ func Test_ValidateParams(t *testing.T) {
 		{name: "Not validate a bad clients ips", args: args{config: cfg5}, wantErr: true},
 		// HTTPS enabled
 		{name: "Validate https config with insecure verify", args: args{config: cfg6}, wantErr: false},
-		{name: "Not validate https without cert authority", args: args{config: cfg8}, wantErr: true},
+		{name: "Not validate https without cert authority", args: args{config: cfg7}, wantErr: true},
+		{name: "Valid log level uppercase INFO", args: args{config: cfg8}, wantErr: false},
+		{name: "Valid log level lowercase info", args: args{config: cfg9}, wantErr: false},
+		{name: "Invalid log level Warning", args: args{config: cfg10}, wantErr: true},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if err := ValidateParams(tt.args.config); (err != nil) != tt.wantErr {
+			if err := ValidateParams(tt.args.config, log); (err != nil) != tt.wantErr {
 				t.Errorf("validateParams() error = %v, wantErr %v", err, tt.wantErr)
 			}
 		})
@@ -136,6 +146,7 @@ func Test_validateParamsTLS(t *testing.T) {
 }
 
 func Test_validateParamsIPs(t *testing.T) {
+	log := logger.New("INFO", "")
 	type args struct {
 		listIP []string
 		key    string
@@ -155,7 +166,7 @@ func Test_validateParamsIPs(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if err := validateParamsIPs(tt.args.listIP, tt.args.key); (err != nil) != tt.wantErr {
+			if err := validateParamsIPs(log, tt.args.listIP, tt.args.key); (err != nil) != tt.wantErr {
 				t.Errorf("validateParamsIPs() error = %v, wantErr %v", err, tt.wantErr)
 			}
 		})
@@ -196,23 +207,24 @@ func Test_validateParamsRequired(t *testing.T) {
 
 func Test_validateParamsAPIKey(t *testing.T) {
 	type args struct {
-		lapiKey string
+		lapiKey   string
+		paramName string
 	}
 	tests := []struct {
 		name    string
 		args    args
 		wantErr bool
 	}{
-		{name: "Validate all the valid characters", args: args{lapiKey: "test!#$%&'*+-.^_`|~"}, wantErr: false},
-		{name: "Not validate a @", args: args{lapiKey: "test@"}, wantErr: true},
-		{name: "Not validate a (", args: args{lapiKey: "test("}, wantErr: true},
-		{name: "Not validate a [", args: args{lapiKey: "test["}, wantErr: true},
-		{name: "Not validate a ?", args: args{lapiKey: "test?"}, wantErr: true},
-		{name: "Not validate a \\n, (must be trimed before)", args: args{lapiKey: "test\n"}, wantErr: true},
+		{name: "Validate all the valid characters", args: args{lapiKey: "test!#$%&'*+-.^_`|~", paramName: "CrowdsecParamName"}, wantErr: false},
+		{name: "Not validate a @", args: args{lapiKey: "test@", paramName: "CrowdsecParamName"}, wantErr: true},
+		{name: "Not validate a (", args: args{lapiKey: "test(", paramName: "CrowdsecParamName"}, wantErr: true},
+		{name: "Not validate a [", args: args{lapiKey: "test[", paramName: "CrowdsecParamName"}, wantErr: true},
+		{name: "Not validate a ?", args: args{lapiKey: "test?", paramName: "CrowdsecParamName"}, wantErr: true},
+		{name: "Not validate a \\n, (must be trimed before)", args: args{lapiKey: "test\n", paramName: "CrowdsecParamName"}, wantErr: true},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if err := validateParamsAPIKey(tt.args.lapiKey); (err != nil) != tt.wantErr {
+			if err := validateParamsAPIKey(tt.args.lapiKey, tt.args.paramName); (err != nil) != tt.wantErr {
 				t.Errorf("validateParamsAPIKey() error = %v, wantErr %v", err, tt.wantErr)
 			}
 		})
@@ -220,6 +232,7 @@ func Test_validateParamsAPIKey(t *testing.T) {
 }
 
 func Test_GetTLSConfigCrowdsec(t *testing.T) {
+	log := logger.New("INFO", "")
 	type args struct {
 		config *Config
 	}
@@ -233,7 +246,7 @@ func Test_GetTLSConfigCrowdsec(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			got, err := GetTLSConfigCrowdsec(tt.args.config, logger.New("INFO"))
+			got, err := GetTLSConfigCrowdsec(tt.args.config, log, false)
 			if (err != nil) != tt.wantErr {
 				t.Errorf("getTLSConfigCrowdsec() error = %v, wantErr %v", err, tt.wantErr)
 				return

pkg/ip/ip.go

@@ -3,12 +3,12 @@
 package ip
 
 import (
+	"errors"
 	"fmt"
+	"log/slog"
 	"net"
 	"net/http"
 	"strings"
-
-	logger "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin/pkg/logger"
 )
 
 // CHECKER
@@ -20,7 +20,7 @@ type Checker struct {
 }
 
 // NewChecker builds a new Checker given a list of CIDR-Strings to trusted IPs.
-func NewChecker(log *logger.Log, trustedIPs []string) (*Checker, error) {
+func NewChecker(log *slog.Logger, trustedIPs []string) (*Checker, error) {
 	checker := &Checker{}
 
 	for _, ipMaskRaw := range trustedIPs {
@@ -45,7 +45,7 @@ func NewChecker(log *logger.Log, trustedIPs []string) (*Checker, error) {
 // Contains checks if provided address is in the trusted IPs.
 func (ip *Checker) Contains(addr string) (bool, error) {
 	if len(addr) == 0 {
-		return false, fmt.Errorf("Contains:noAddress")
+		return false, errors.New("Contains:noAddress")
 	}
 
 	ipAddr, err := parseIP(addr)

pkg/logger/logger.go

@@ -1,48 +1,92 @@
 // Package logger implements utility routines to write to stdout and stderr.
-// It supports debug, info and error level
+// It supports trace, debug, info, warn and error level using Go's standard log/slog
 package logger
 
 import (
-	"io"
-	"log"
+	"log/slog"
 	"os"
+	"path/filepath"
 )
 
-// Log Logger struct.
-type Log struct {
-	logError *log.Logger
-	logInfo  *log.Logger
-	logDebug *log.Logger
+// Custom log levels following slog best practices.
+const (
+	LevelDebug = slog.LevelDebug
+	LevelInfo  = slog.LevelInfo
+	LevelWarn  = slog.LevelWarn
+	LevelError = slog.LevelError
+)
+
+// New creates a Log wrapper with default format (common).
+func New(logLevel string, logFilePath string) *slog.Logger {
+	return NewWithFormat(logLevel, logFilePath, "common")
 }
 
-// New Set Default log level to info in case log level to defined.
-func New(logLevel string) *Log {
-	logError := log.New(io.Discard, "ERROR: CrowdsecBouncerTraefikPlugin: ", log.Ldate|log.Ltime)
-	logInfo := log.New(io.Discard, "INFO: CrowdsecBouncerTraefikPlugin: ", log.Ldate|log.Ltime)
-	logDebug := log.New(io.Discard, "DEBUG: CrowdsecBouncerTraefikPlugin: ", log.Ldate|log.Ltime)
-	logError.SetOutput(os.Stderr)
-	logInfo.SetOutput(os.Stdout)
-	if logLevel == "DEBUG" {
-		logDebug.SetOutput(os.Stdout)
+// NewWithFormat creates a Log wrapper with specified format (common or json).
+func NewWithFormat(logLevel, logFilePath, logFormat string) *slog.Logger {
+	// Determine log level
+	var level slog.Level
+	switch logLevel {
+	case "ERROR":
+		level = LevelError
+	case "WARN":
+		level = LevelWarn
+	case "INFO":
+		level = LevelInfo
+	case "DEBUG":
+		level = LevelDebug
+	default:
+		// Default to INFO level
+		level = LevelInfo
 	}
-	return &Log{
-		logError: logError,
-		logInfo:  logInfo,
-		logDebug: logDebug,
+
+	// Set output destination
+	var output *os.File
+	if logFilePath != "" {
+		logFile, err := os.OpenFile(filepath.Clean(logFilePath), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600)
+		if err == nil {
+			output = logFile
+		} else {
+			// Fall back to stdout and log the error
+			output = os.Stdout
+			slog.Warn("LogFilePath is not writable, using stdout", "error", err)
+		}
+	} else {
+		output = os.Stdout
 	}
-}
 
-// Info log to Stdout.
-func (l *Log) Info(str string) {
-	l.logInfo.Printf(str)
-}
+	// Create handler based on format with custom level names
+	var handler slog.Handler
+	opts := &slog.HandlerOptions{
+		Level: level,
+		ReplaceAttr: func(_ []string, a slog.Attr) slog.Attr {
+			// Customize level names to match our expected format
+			if a.Key == slog.LevelKey {
+				lvl, ok := a.Value.Any().(slog.Level)
+				if !ok {
+					return a
+				}
+				switch {
+				case lvl < LevelInfo:
+					a.Value = slog.StringValue("DEBUG")
+				case lvl < LevelWarn:
+					a.Value = slog.StringValue("INFO")
+				case lvl < LevelError:
+					a.Value = slog.StringValue("WARN")
+				default:
+					a.Value = slog.StringValue("ERROR")
+				}
+			}
+			return a
+		},
+	}
 
-// Debug log to Stdout.
-func (l *Log) Debug(str string) {
-	l.logDebug.Printf(str)
-}
+	if logFormat == "json" {
+		handler = slog.NewJSONHandler(output, opts)
+	} else {
+		// Common format (default)
+		handler = slog.NewTextHandler(output, opts)
+	}
 
-// Error log to Stderr.
-func (l *Log) Error(str string) {
-	l.logError.Printf(str)
+	// Create logger with component attribute
+	return slog.New(handler).With("component", "CrowdsecBouncerTraefikPlugin")
 }

pkg/logger/logger_test.go

@@ -0,0 +1,156 @@
+package logger
+
+import (
+	"bytes"
+	"encoding/json"
+	"log/slog"
+	"strings"
+	"testing"
+)
+
+func TestNew(t *testing.T) {
+	tests := []struct {
+		name     string
+		logLevel string
+	}{
+		{name: "ERROR level", logLevel: "ERROR"},
+		{name: "WARN level", logLevel: "WARN"},
+		{name: "INFO level", logLevel: "INFO"},
+		{name: "DEBUG level", logLevel: "DEBUG"},
+		{name: "Default level (INFO)", logLevel: "INVALID"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			logger := New(tt.logLevel, "")
+
+			// Verify logger is created
+			if logger == nil {
+				t.Fatal("Expected logger to be created, got nil")
+			}
+
+			// Verify it's a slog.Logger (we can call methods on it)
+			logger.Info("test initialization")
+		})
+	}
+}
+
+func TestJSONLogFormat(t *testing.T) {
+	var buf bytes.Buffer
+
+	// Create a logger with JSON handler to capture output
+	handler := slog.NewJSONHandler(&buf, &slog.HandlerOptions{Level: slog.LevelInfo})
+	logger := slog.New(handler).With("component", "CrowdsecBouncerTraefikPlugin")
+
+	testMessage := "json test message"
+	logger.Info(testMessage)
+
+	output := buf.String()
+	lines := strings.Split(strings.TrimSpace(output), "\n")
+
+	if len(lines) != 1 {
+		t.Fatalf("Expected 1 log line, got %d", len(lines))
+	}
+
+	// Verify it's valid JSON
+	var logEntry map[string]interface{}
+	err := json.Unmarshal([]byte(lines[0]), &logEntry)
+	if err != nil {
+		t.Fatalf("Expected valid JSON output, got error: %v, output: %s", err, output)
+	}
+
+	// Verify JSON structure
+	if logEntry["level"] != "INFO" {
+		t.Errorf("Expected level 'INFO', got '%v'", logEntry["level"])
+	}
+	if logEntry["msg"] != testMessage {
+		t.Errorf("Expected message '%s', got '%v'", testMessage, logEntry["msg"])
+	}
+	if logEntry["time"] == nil {
+		t.Error("Expected timestamp to be set")
+	}
+	if logEntry["component"] != "CrowdsecBouncerTraefikPlugin" {
+		t.Errorf("Expected component 'CrowdsecBouncerTraefikPlugin', got '%v'", logEntry["component"])
+	}
+}
+
+func TestCommonLogFormat(t *testing.T) {
+	var buf bytes.Buffer
+
+	// Create a logger with text handler to capture output
+	handler := slog.NewTextHandler(&buf, &slog.HandlerOptions{Level: slog.LevelInfo})
+	logger := slog.New(handler).With("component", "CrowdsecBouncerTraefikPlugin")
+
+	testMessage := "common test message"
+	logger.Info(testMessage)
+
+	output := buf.String()
+
+	// Verify common format (should contain level and message)
+	if !strings.Contains(output, "level=INFO") {
+		t.Error("Expected common format with INFO level")
+	}
+	if !strings.Contains(output, testMessage) {
+		t.Error("Expected test message in common format")
+	}
+	if !strings.Contains(output, "component=CrowdsecBouncerTraefikPlugin") {
+		t.Error("Expected component field in common format")
+	}
+
+	// Should NOT be JSON (should be slog text format)
+	var logEntry map[string]interface{}
+	err := json.Unmarshal([]byte(strings.TrimSpace(output)), &logEntry)
+	if err == nil {
+		t.Error("Expected common format (not JSON), but got valid JSON")
+	}
+}
+
+func TestErrorLevel(t *testing.T) {
+	var buf bytes.Buffer
+
+	// Create a logger with ERROR level to capture output
+	handler := slog.NewTextHandler(&buf, &slog.HandlerOptions{Level: slog.LevelError})
+	logger := slog.New(handler).With("component", "CrowdsecBouncerTraefikPlugin")
+
+	testMessage := "error only test"
+
+	// Test all log methods
+	logger.Error(testMessage)
+	logger.Warn(testMessage)  // Should not appear
+	logger.Info(testMessage)  // Should not appear
+	logger.Debug(testMessage) // Should not appear
+
+	output := buf.String()
+
+	// Only ERROR should appear
+	if !strings.Contains(output, "level=ERROR") {
+		t.Error("Expected ERROR message to appear")
+	}
+
+	// Other levels should NOT appear
+	unwantedLevels := []string{"level=WARN", "level=INFO", "level=DEBUG"}
+	for _, level := range unwantedLevels {
+		if strings.Contains(output, level) {
+			t.Errorf("Unexpected %s message appeared at ERROR level", level)
+		}
+	}
+
+	// Verify only one message appears
+	messageCount := strings.Count(output, testMessage)
+	if messageCount != 1 {
+		t.Errorf("Expected 1 occurrence of test message at ERROR level, got %d", messageCount)
+	}
+}
+
+func TestInvalidLogFile(t *testing.T) {
+	// Try to create logger with invalid file path
+	logger := New("INFO", "/invalid/path/that/does/not/exist/test.log")
+
+	// Logger should still be created (falls back to stdout)
+	if logger == nil {
+		t.Fatal("Expected logger to be created even with invalid file path")
+	}
+
+	// Should not panic when logging
+	logger.Info("test message")
+}

vendor/github.com/maxlerebourg/simpleredis/simpleredis.go

@@ -18,7 +18,7 @@ const (
 	RedisMiss        = "redis:miss"
 	RedisTimeout     = "redis:timeout"
 	RedisNoAuth      = "redis:noauth"
-	RedisIssue      = "redis:issue?"
+	RedisIssue       = "redis:issue?"
 )
 
 // A redisCmd is used to communicate with redis at low level using commands.
@@ -117,12 +117,11 @@ func (sr *SimpleRedis) askRedis(cmd redisCmd, channel chan redisCmd) redisCmd {
 				str := string(read)
 				if strings.Contains(str, "-NOAUTH") {
 					return redisCmd{Error: fmt.Errorf(RedisNoAuth)}
-				} else if str != "$1" {
+				} else if str == "$-1" {
 					return redisCmd{Error: fmt.Errorf(RedisMiss)}
 				}
 				read, _ = reader.ReadLineBytes()
 				return redisCmd{Data: read}
-				
 			}
 		}
 	}

vendor/modules.txt

@@ -1,6 +1,6 @@
 # github.com/leprosus/golang-ttl-map v1.1.7
 ## explicit; go 1.15
 github.com/leprosus/golang-ttl-map
-# github.com/maxlerebourg/simpleredis v1.0.9
-## explicit; go 1.19
+# github.com/maxlerebourg/simpleredis v1.0.12
+## explicit; go 1.22
 github.com/maxlerebourg/simpleredis

version.go

@@ -0,0 +1,4 @@
+package crowdsec_bouncer_traefik_plugin //nolint:revive,stylecheck
+
+// pluginVersion is updated automatically by the release workflow.
+var pluginVersion = "1.5.0" //nolint:gochecknoglobals