chore: spelling

Signed-off-by: Xe Iaso <me@xeiaso.net>

.github/actions/spelling/allow.txt

@@ -39,3 +39,5 @@ wenet
 qwertiko
 setuplistener
 mba
+xfu
+xou

.github/actions/spelling/expect.txt

@@ -120,6 +120,7 @@ fahedouch
 fastcgi
 FCr
 fcrdns
+fcvg
 fediverse
 ffprobe
 fhdr
@@ -238,6 +239,7 @@ mnt
 Mojeek
 mojeekbot
 mozilla
+mqvh
 myclient
 mymaster
 mypass
@@ -387,6 +389,7 @@ vnd
 VPS
 Vultr
 WAIFU
+wcg
 weblate
 webmaster
 webpage

.github/workflows/smoke-tests.yml

@@ -27,6 +27,7 @@ jobs:
           - palemoon/amd64
           #- palemoon/i386
           - robots_txt
+          - traefik
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code

cmd/anubis/main.go

@@ -259,7 +259,7 @@ func main() {
 	}
 
 	lg.Info("loading policy file", "fname", *policyFname)
-	policy, err := libanubis.LoadPoliciesOrDefault(ctx, *policyFname, *challengeDifficulty, *slogLevel)
+	policy, err := libanubis.LoadPoliciesOrDefault(ctx, *policyFname, *challengeDifficulty, *slogLevel, strings.TrimSpace(*target) == "")
 	if err != nil {
 		log.Fatalf("can't parse policy file: %v", err)
 	}

docs/docs/CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 <!-- This changes the project to: -->
 
+- Patch [GHSA-6wcg-mqvh-fcvg](https://github.com/TecharoHQ/anubis/security/advisories/GHSA-6wcg-mqvh-fcvg) by containing subrequest logic to Anubis instances in subrequest mode.
 - Move metrics server configuration to [the policy file](./admin/policies.mdx#metrics-server).
 - Expose [pprof endpoints](https://pkg.go.dev/net/http/pprof) on the metrics listener to enable profiling Anubis in production.
 - fix: prevent nil pointer panic in challenge validation when threshold rules match during PassChallenge (#1463)
@@ -20,9 +21,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed mixed tab/space indentation in Caddy documentation code block
 - Improve error messages and fix broken REDIRECT_DOMAINS link in docs ([#1193](https://github.com/TecharoHQ/anubis/issues/1193))
 - Add Bulgarian locale ([#1394](https://github.com/TecharoHQ/anubis/pull/1394))
+- Fixed case-sensitivity mismatch in geoipchecker.go
 - Fix CEL internal errors when iterating `headers`/`query` map wrappers by implementing map iterators for `HTTPHeaders` and `URLValues` ([#1465](https://github.com/TecharoHQ/anubis/pull/1465)).
 - Enable [metrics serving via TLS](./admin/policies.mdx#tls), including [mutual TLS (mTLS)](./admin/policies.mdx#mtls).
 - Enable [HTTP basic auth](./admin/policies.mdx#http-basic-authentication) for the metrics server.
+- Fix a bug in the dataset poisoning maze that could allow denial of service [#1580](https://github.com/TecharoHQ/anubis/issues/1580).
+- Add config option to add ASN to logs/metrics.
+- Log weight when issuing challenge
+- Fix `path_regex` and CEL `path` rules not matching when using Traefik `forwardAuth` middleware. Anubis now checks `X-Forwarded-Uri` (Traefik) in addition to `X-Original-URI` (nginx) when resolving the request path in subrequest mode ([#1628](https://github.com/TecharoHQ/anubis/issues/1628)).
 
 ## v1.25.0: Necron
 

docs/docs/admin/policies.mdx

@@ -411,6 +411,7 @@ Anubis exposes the following logging settings in the policy file:
 | `level`      | [log level](#log-levels) | `info`          | The logging level threshold. Any logs that are at or above this threshold will be drained to the sink. Any other logs will be discarded. |
 | `sink`       | string                   | `stdio`, `file` | The sink where the logs drain to as they are being recorded in Anubis.                                                                   |
 | `parameters` | object                   |                 | Parameters for the given logging sink. This will vary based on the logging sink of choice. See below for more information.               |
+| `asn`        | bool                     | `true`, `false` | Add ASN information to logs/metrics. (Requires a Thoth client configured)                                                                |
 
 Anubis supports the following logging sinks:
 

go.mod

@@ -106,7 +106,7 @@ require (
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
 	github.com/go-git/go-billy/v5 v5.6.2 // indirect
 	github.com/go-git/go-git/v5 v5.16.2 // indirect
-	github.com/go-jose/go-jose/v3 v3.0.4 // indirect
+	github.com/go-jose/go-jose/v3 v3.0.5 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect

go.sum

@@ -189,8 +189,8 @@ github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399 h1:eMj
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399/go.mod h1:1OCfN199q1Jm3HZlxleg+Dw/mwps2Wbk9frAWm+4FII=
 github.com/go-git/go-git/v5 v5.16.2 h1:fT6ZIOjE5iEnkzKyxTHK1W4HGAsPhqEqiSAssSO77hM=
 github.com/go-git/go-git/v5 v5.16.2/go.mod h1:4Ge4alE/5gPs30F2H1esi2gPd69R0C39lolkucHBOp8=
-github.com/go-jose/go-jose/v3 v3.0.4 h1:Wp5HA7bLQcKnf6YYao/4kpRpVMp/yf6+pJKV8WFSaNY=
-github.com/go-jose/go-jose/v3 v3.0.4/go.mod h1:5b+7YgP7ZICgJDBdfjZaIt+H/9L9T/YQrVfLAMboGkQ=
+github.com/go-jose/go-jose/v3 v3.0.5 h1:BLLJWbC4nMZOfuPVxoZIxeYsn6Nl2r1fITaJ78UQlVQ=
+github.com/go-jose/go-jose/v3 v3.0.5/go.mod h1:5b+7YgP7ZICgJDBdfjZaIt+H/9L9T/YQrVfLAMboGkQ=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
 github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=

internal/honeypot/naive/naive.go

@@ -76,13 +76,6 @@ type Impl struct {
 	affirmation, body, title spintax.Spintax
 }
 
-func (i *Impl) incrementUA(ctx context.Context, userAgent string) int {
-	result, _ := i.uaWeight.Get(ctx, internal.SHA256sum(userAgent))
-	result++
-	i.uaWeight.Set(ctx, internal.SHA256sum(userAgent), result, time.Hour)
-	return result
-}
-
 func (i *Impl) incrementNetwork(ctx context.Context, network string) int {
 	result, _ := i.networkWeight.Get(ctx, internal.SHA256sum(network))
 	result++
@@ -90,20 +83,19 @@ func (i *Impl) incrementNetwork(ctx context.Context, network string) int {
 	return result
 }
 
-func (i *Impl) CheckUA() checker.Impl {
-	return checker.Func(func(r *http.Request) (bool, error) {
-		result, _ := i.uaWeight.Get(r.Context(), internal.SHA256sum(r.UserAgent()))
-		if result >= 25 {
-			return true, nil
-		}
-
-		return false, nil
-	})
-}
-
 func (i *Impl) CheckNetwork() checker.Impl {
 	return checker.Func(func(r *http.Request) (bool, error) {
-		result, _ := i.uaWeight.Get(r.Context(), internal.SHA256sum(r.UserAgent()))
+		realIP, _ := internal.RealIP(r)
+		if !realIP.IsValid() {
+			realIP = netip.MustParseAddr(r.Header.Get("X-Real-Ip"))
+		}
+
+		network, ok := internal.ClampIP(realIP)
+		if !ok {
+			return false, nil
+		}
+
+		result, _ := i.networkWeight.Get(r.Context(), internal.SHA256sum(network.String()))
 		if result >= 25 {
 			return true, nil
 		}
@@ -164,7 +156,6 @@ func (i *Impl) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 
 	networkCount := i.incrementNetwork(r.Context(), network.String())
-	uaCount := i.incrementUA(r.Context(), r.UserAgent())
 
 	stage := r.PathValue("stage")
 
@@ -172,8 +163,8 @@ func (i *Impl) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		lg.Debug("found new entrance point", "id", id, "stage", stage, "userAgent", r.UserAgent(), "clampedIP", network)
 	} else {
 		switch {
-		case networkCount%256 == 0, uaCount%256 == 0:
-			lg.Warn("found possible crawler", "id", id, "network", network)
+		case networkCount%256 == 0:
+			lg.Warn("found possible crawler", "id", id, "network", network, "userAgent", r.UserAgent())
 		}
 	}
 

internal/test/playwright_test.go

@@ -595,7 +595,7 @@ func spawnAnubisWithOptions(t *testing.T, basePrefix string) string {
 		fmt.Fprintf(w, "<html><body><span id=anubis-test>%d</span></body></html>", time.Now().Unix())
 	})
 
-	policy, err := libanubis.LoadPoliciesOrDefault(t.Context(), "", anubis.DefaultDifficulty, "info")
+	policy, err := libanubis.LoadPoliciesOrDefault(t.Context(), "", anubis.DefaultDifficulty, "info", false)
 	if err != nil {
 		t.Fatal(err)
 	}

lib/anubis.go

@@ -11,6 +11,7 @@ import (
 	"net"
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
 	"time"
 
@@ -32,6 +33,7 @@ import (
 	"github.com/TecharoHQ/anubis/lib/policy"
 	"github.com/TecharoHQ/anubis/lib/policy/checker"
 	"github.com/TecharoHQ/anubis/lib/store"
+	iptoasnv1 "github.com/TecharoHQ/thoth-proto/gen/techaro/thoth/iptoasn/v1"
 
 	// challenge implementations
 	_ "github.com/TecharoHQ/anubis/lib/challenge/metarefresh"
@@ -39,31 +41,52 @@ import (
 	_ "github.com/TecharoHQ/anubis/lib/challenge/proofofwork"
 )
 
+type contextKey int
+
+const asnContextKey contextKey = iota
+
+type asnInfo struct {
+	ASN         string
+	Description string
+}
+
+func asnFromContext(ctx context.Context) (string, string) {
+	if v, ok := ctx.Value(asnContextKey).(asnInfo); ok {
+		return v.ASN, v.Description
+	}
+	return "", ""
+}
+
 var (
 	challengesIssued = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name: "anubis_challenges_issued",
 		Help: "The total number of challenges issued",
-	}, []string{"method"})
+	}, []string{"method", "asn", "asn_description"})
 
 	challengesValidated = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name: "anubis_challenges_validated",
 		Help: "The total number of challenges validated",
-	}, []string{"method"})
+	}, []string{"method", "asn", "asn_description"})
 
 	droneBLHits = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name: "anubis_dronebl_hits",
 		Help: "The total number of hits from DroneBL",
-	}, []string{"status"})
+	}, []string{"status", "asn", "asn_description"})
 
 	failedValidations = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name: "anubis_failed_validations",
 		Help: "The total number of failed validations",
-	}, []string{"method"})
+	}, []string{"method", "asn", "asn_description"})
 
 	requestsProxied = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name: "anubis_proxied_requests_total",
 		Help: "Number of requests proxied through Anubis to upstream targets",
-	}, []string{"host"})
+	}, []string{"host", "asn", "asn_description"})
+
+	requestsByASN = promauto.NewCounterVec(prometheus.CounterOpts{
+		Name: "anubis_requests_by_asn_total",
+		Help: "Number of requests by ASN",
+	}, []string{"asn", "asn_description"})
 )
 
 type Server struct {
@@ -78,6 +101,28 @@ type Server struct {
 	hs512Secret []byte
 }
 
+func (s *Server) getRequestLogger(r *http.Request) (*slog.Logger, *http.Request) {
+	lg := internal.GetRequestLogger(s.logger, r)
+
+	if s.policy.LogASN && s.policy.ThothClient != nil {
+		ctx, cancel := context.WithTimeout(r.Context(), 500*time.Millisecond)
+		defer cancel()
+
+		ip := r.Header.Get("X-Real-Ip")
+		if info, err := s.policy.ThothClient.IPToASN.Lookup(ctx, &iptoasnv1.LookupRequest{IpAddress: ip}); err == nil && info.GetAnnounced() {
+			asn := strconv.FormatUint(uint64(info.GetAsNumber()), 10)
+			lg = lg.With("asn", info.GetAsNumber(), "asn_description", info.GetDescription())
+			requestsByASN.WithLabelValues(asn, info.GetDescription()).Inc()
+			r = r.WithContext(context.WithValue(r.Context(), asnContextKey, asnInfo{
+				ASN:         asn,
+				Description: info.GetDescription(),
+			}))
+		}
+	}
+
+	return lg, r
+}
+
 func (s *Server) getTokenKeyfunc() jwt.Keyfunc {
 	// return ED25519 key if HS512 is not set
 	if len(s.hs512Secret) == 0 {
@@ -141,7 +186,7 @@ func (s *Server) issueChallenge(ctx context.Context, r *http.Request, lg *slog.L
 		return nil, err
 	}
 
-	lg.Info("new challenge issued", "challenge", id.String())
+	lg.Info("new challenge issued", "challenge", id.String(), "weight", cr.Weight)
 
 	return &chall, err
 }
@@ -193,7 +238,7 @@ func (s *Server) maybeReverseProxyOrPage(w http.ResponseWriter, r *http.Request)
 }
 
 func (s *Server) maybeReverseProxy(w http.ResponseWriter, r *http.Request, httpStatusOnly bool) {
-	lg := internal.GetRequestLogger(s.logger, r)
+	lg, r := s.getRequestLogger(r)
 
 	if val, _ := s.store.Get(r.Context(), fmt.Sprintf("ogtags:allow:%s%s", r.Host, r.URL.String())); val != nil {
 		lg.Debug("serving opengraph tag asset")
@@ -218,7 +263,10 @@ func (s *Server) maybeReverseProxy(w http.ResponseWriter, r *http.Request, httpS
 	r.Header.Add("X-Anubis-Rule", cr.Name)
 	r.Header.Add("X-Anubis-Action", string(cr.Rule))
 	lg = lg.With("check_result", cr)
-	policy.Applications.WithLabelValues(cr.Name, string(cr.Rule)).Add(1)
+	{
+		asn, asnDesc := asnFromContext(r.Context())
+		policy.Applications.WithLabelValues(cr.Name, string(cr.Rule), asn, asnDesc).Add(1)
+	}
 
 	ip := r.Header.Get("X-Real-Ip")
 
@@ -348,7 +396,8 @@ func (s *Server) handleDNSBL(w http.ResponseWriter, r *http.Request, ip string,
 				lg.Error("can't look up ip in dnsbl", "err", err)
 			}
 			db.Set(r.Context(), ip, resp, 24*time.Hour)
-			droneBLHits.WithLabelValues(resp.String()).Inc()
+			asn, asnDesc := asnFromContext(r.Context())
+			droneBLHits.WithLabelValues(resp.String(), asn, asnDesc).Inc()
 		}
 
 		if resp != dnsbl.AllGood {
@@ -366,7 +415,7 @@ func (s *Server) handleDNSBL(w http.ResponseWriter, r *http.Request, ip string,
 }
 
 func (s *Server) MakeChallenge(w http.ResponseWriter, r *http.Request) {
-	lg := internal.GetRequestLogger(s.logger, r)
+	lg, r := s.getRequestLogger(r)
 	localizer := localization.GetLocalizer(r)
 
 	redir := r.FormValue("redir")
@@ -435,11 +484,14 @@ func (s *Server) MakeChallenge(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	lg.Debug("made challenge", "challenge", chall, "rules", rule.Challenge, "cr", cr)
-	challengesIssued.WithLabelValues("api").Inc()
+	{
+		asn, asnDesc := asnFromContext(r.Context())
+		challengesIssued.WithLabelValues("api", asn, asnDesc).Inc()
+	}
 }
 
 func (s *Server) PassChallenge(w http.ResponseWriter, r *http.Request) {
-	lg := internal.GetRequestLogger(s.logger, r)
+	lg, r := s.getRequestLogger(r)
 	localizer := localization.GetLocalizer(r)
 
 	redir := r.FormValue("redir")
@@ -530,7 +582,8 @@ func (s *Server) PassChallenge(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if err := impl.Validate(r, lg, in); err != nil {
-		failedValidations.WithLabelValues(rule.Challenge.Algorithm).Inc()
+		asn, asnDesc := asnFromContext(r.Context())
+		failedValidations.WithLabelValues(rule.Challenge.Algorithm, asn, asnDesc).Inc()
 		var cerr *challenge.Error
 		s.ClearCookie(w, CookieOpts{Path: cookiePath, Host: r.Host})
 		lg.Debug("challenge validate call failed", "err", err)
@@ -590,7 +643,10 @@ func (s *Server) PassChallenge(w http.ResponseWriter, r *http.Request) {
 		lg.Debug("can't update information about challenge", "err", err)
 	}
 
-	challengesValidated.WithLabelValues(rule.Challenge.Algorithm).Inc()
+	{
+		asn, asnDesc := asnFromContext(r.Context())
+		challengesValidated.WithLabelValues(rule.Challenge.Algorithm, asn, asnDesc).Inc()
+	}
 	lg.Debug("challenge passed, redirecting to app")
 	http.Redirect(w, r, redir, http.StatusFound)
 }
@@ -629,7 +685,8 @@ func (s *Server) check(r *http.Request, lg *slog.Logger) (policy.CheckResult, *p
 				return cr("bot/"+b.Name, b.Action, weight), &b, nil
 			case config.RuleWeigh:
 				lg.Debug("adjusting weight", "name", b.Name, "delta", b.Weight.Adjust)
-				policy.Applications.WithLabelValues("bot/"+b.Name, "WEIGH").Add(1)
+				asn, asnDesc := asnFromContext(r.Context())
+				policy.Applications.WithLabelValues("bot/"+b.Name, "WEIGH", asn, asnDesc).Add(1)
 				weight += b.Weight.Adjust
 			}
 		}

lib/anubis_test.go

@@ -58,7 +58,7 @@ func loadPolicies(t *testing.T, fname string, difficulty int) *policy.ParsedConf
 
 	t.Logf("loading policy file: %s", fname)
 
-	anubisPolicy, err := LoadPoliciesOrDefault(ctx, fname, difficulty, "info")
+	anubisPolicy, err := LoadPoliciesOrDefault(ctx, fname, difficulty, "info", false)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -250,7 +250,7 @@ func TestLoadPolicies(t *testing.T) {
 			}
 			defer fin.Close()
 
-			if _, err := policy.ParseConfig(t.Context(), fin, fname, 4, "info"); err != nil {
+			if _, err := policy.ParseConfig(t.Context(), fin, fname, 4, "info", false); err != nil {
 				t.Fatal(err)
 			}
 		})

lib/config.go

@@ -55,7 +55,7 @@ type Options struct {
 	DifficultyInJWT          bool
 }
 
-func LoadPoliciesOrDefault(ctx context.Context, fname string, defaultDifficulty int, logLevel string) (*policy.ParsedConfig, error) {
+func LoadPoliciesOrDefault(ctx context.Context, fname string, defaultDifficulty int, logLevel string, subrequestMode bool) (*policy.ParsedConfig, error) {
 	var fin io.ReadCloser
 	var err error
 
@@ -79,7 +79,7 @@ func LoadPoliciesOrDefault(ctx context.Context, fname string, defaultDifficulty
 		}
 	}(fin)
 
-	anubisPolicy, err := policy.ParseConfig(ctx, fin, fname, defaultDifficulty, logLevel)
+	anubisPolicy, err := policy.ParseConfig(ctx, fin, fname, defaultDifficulty, logLevel, subrequestMode)
 	if err != nil {
 		return nil, fmt.Errorf("can't parse policy file %s: %w", fname, err)
 	}
@@ -190,14 +190,6 @@ func New(opts Options) (*Server, error) {
 				},
 				Name: "honeypot/network",
 			},
-			policy.Bot{
-				Rules:  mazeGen.CheckUA(),
-				Action: config.RuleWeigh,
-				Weight: &config.Weight{
-					Adjust: 30,
-				},
-				Name: "honeypot/user-agent",
-			},
 		)
 	} else {
 		result.logger.Error("can't init honeypot subsystem", "err", err)

lib/config/logging.go

@@ -17,6 +17,7 @@ type Logging struct {
 	Sink       string             `json:"sink"`       // Logging sink, either "stdio" or "file"
 	Level      *slog.Level        `json:"level"`      // Log level, if set supersedes the level in flags
 	Parameters *LoggingFileConfig `json:"parameters"` // Logging parameters, to be dynamic in the future
+	LogASN     bool               `json:"asn" yaml:"asn"`
 }
 
 const (

lib/config_test.go

@@ -12,7 +12,7 @@ import (
 )
 
 func TestInvalidChallengeMethod(t *testing.T) {
-	if _, err := LoadPoliciesOrDefault(t.Context(), "testdata/invalid-challenge-method.yaml", 4, "info"); !errors.Is(err, policy.ErrChallengeRuleHasWrongAlgorithm) {
+	if _, err := LoadPoliciesOrDefault(t.Context(), "testdata/invalid-challenge-method.yaml", 4, "info", false); !errors.Is(err, policy.ErrChallengeRuleHasWrongAlgorithm) {
 		t.Fatalf("wanted error %v but got %v", policy.ErrChallengeRuleHasWrongAlgorithm, err)
 	}
 }
@@ -25,7 +25,7 @@ func TestBadConfigs(t *testing.T) {
 
 	for _, st := range finfos {
 		t.Run(st.Name(), func(t *testing.T) {
-			if _, err := LoadPoliciesOrDefault(t.Context(), filepath.Join("config", "testdata", "bad", st.Name()), anubis.DefaultDifficulty, "info"); err == nil {
+			if _, err := LoadPoliciesOrDefault(t.Context(), filepath.Join("config", "testdata", "bad", st.Name()), anubis.DefaultDifficulty, "info", false); err == nil {
 				t.Fatal(err)
 			} else {
 				t.Log(err)
@@ -44,13 +44,13 @@ func TestGoodConfigs(t *testing.T) {
 		t.Run(st.Name(), func(t *testing.T) {
 			t.Run("with-thoth", func(t *testing.T) {
 				ctx := thothmock.WithMockThoth(t)
-				if _, err := LoadPoliciesOrDefault(ctx, filepath.Join("config", "testdata", "good", st.Name()), anubis.DefaultDifficulty, "info"); err != nil {
+				if _, err := LoadPoliciesOrDefault(ctx, filepath.Join("config", "testdata", "good", st.Name()), anubis.DefaultDifficulty, "info", false); err != nil {
 					t.Fatal(err)
 				}
 			})
 
 			t.Run("without-thoth", func(t *testing.T) {
-				if _, err := LoadPoliciesOrDefault(t.Context(), filepath.Join("config", "testdata", "good", st.Name()), anubis.DefaultDifficulty, "info"); err != nil {
+				if _, err := LoadPoliciesOrDefault(t.Context(), filepath.Join("config", "testdata", "good", st.Name()), anubis.DefaultDifficulty, "info", false); err != nil {
 					t.Fatal(err)
 				}
 			})

lib/http.go

@@ -207,7 +207,7 @@ func (s *Server) RenderIndex(w http.ResponseWriter, r *http.Request, cr policy.C
 		return
 	}
 
-	lg := internal.GetRequestLogger(s.logger, r)
+	lg, r := s.getRequestLogger(r)
 
 	if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") && randomChance(64) {
 		lg.Error("client was given a challenge but does not in fact support gzip compression")
@@ -215,7 +215,10 @@ func (s *Server) RenderIndex(w http.ResponseWriter, r *http.Request, cr policy.C
 		return
 	}
 
-	challengesIssued.WithLabelValues("embedded").Add(1)
+	{
+		asn, asnDesc := asnFromContext(r.Context())
+		challengesIssued.WithLabelValues("embedded", asn, asnDesc).Add(1)
+	}
 	chall, err := s.issueChallenge(r.Context(), r, lg, cr, rule)
 	if err != nil {
 		lg.Error("can't get challenge", "err", err)
@@ -306,14 +309,14 @@ func (s *Server) constructRedirectURL(r *http.Request) (string, error) {
 	case "http", "https":
 		// allowed
 	default:
-		lg := internal.GetRequestLogger(s.logger, r)
+		lg, _ := s.getRequestLogger(r)
 		lg.Warn("invalid protocol in X-Forwarded-Proto", "proto", proto)
 		return "", errors.New(localizer.T("invalid_redirect"))
 	}
 
 	// Check if host is allowed in RedirectDomains (supports '*' via glob)
 	if len(s.opts.RedirectDomains) > 0 && !matchRedirectDomain(s.opts.RedirectDomains, host) {
-		lg := internal.GetRequestLogger(s.logger, r)
+		lg, _ := s.getRequestLogger(r)
 		lg.Debug("domain not allowed", "domain", host)
 		return "", errors.New(localizer.T("redirect_domain_not_allowed"))
 	}
@@ -415,7 +418,7 @@ func (s *Server) ServeHTTPNext(w http.ResponseWriter, r *http.Request) {
 		case "", "http", "https":
 			// allowed: empty scheme means relative URL
 		default:
-			lg := internal.GetRequestLogger(s.logger, r)
+			lg, _ := s.getRequestLogger(r)
 			lg.Warn("XSS attempt blocked, invalid redirect scheme", "scheme", urlParsed.Scheme, "redir", redir)
 			s.respondWithStatus(w, r, localizer.T("invalid_redirect"), "", http.StatusBadRequest)
 			return
@@ -427,7 +430,7 @@ func (s *Server) ServeHTTPNext(w http.ResponseWriter, r *http.Request) {
 		hostMismatch := r.URL.Host != "" && urlParsed.Host != "" && urlParsed.Host != r.URL.Host
 
 		if hostNotAllowed || hostMismatch {
-			lg := internal.GetRequestLogger(s.logger, r)
+			lg, _ := s.getRequestLogger(r)
 			lg.Debug("domain not allowed", "domain", urlParsed.Host)
 			s.respondWithStatus(w, r, localizer.T("redirect_domain_not_allowed"), makeCode(err), http.StatusBadRequest)
 			return
@@ -442,7 +445,8 @@ func (s *Server) ServeHTTPNext(w http.ResponseWriter, r *http.Request) {
 			web.Base(localizer.T("you_are_not_a_bot"), web.StaticHappy(localizer), s.policy.Impressum, localizer),
 		).ServeHTTP(w, r)
 	} else {
-		requestsProxied.WithLabelValues(r.Host).Inc()
+		asn, asnDesc := asnFromContext(r.Context())
+		requestsProxied.WithLabelValues(r.Host, asn, asnDesc).Inc()
 		r = s.stripBasePrefixFromRequest(r)
 		s.next.ServeHTTP(w, r)
 	}

lib/metrics/metrics.go

@@ -64,7 +64,7 @@ func (s *Server) run(ctx context.Context, lg *slog.Logger) error {
 		ErrorLog: internal.GetFilteredHTTPLogger(),
 	}
 
-	ln, metricsURL, err := internal.SetupListener(s.Config.Bind, s.Config.Network, s.Config.SocketMode)
+	ln, metricsURL, err := internal.SetupListener(s.Config.Network, s.Config.Bind, s.Config.SocketMode)
 	if err != nil {
 		return fmt.Errorf("can't setup listener: %w", err)
 	}

lib/policy/celchecker.go

@@ -13,11 +13,12 @@ import (
 )
 
 type CELChecker struct {
-	program cel.Program
-	src     string
+	program        cel.Program
+	src            string
+	subRequestMode bool
 }
 
-func NewCELChecker(cfg *config.ExpressionOrList, dnsObj *dns.Dns) (*CELChecker, error) {
+func NewCELChecker(cfg *config.ExpressionOrList, dnsObj *dns.Dns, subRequestMode bool) (*CELChecker, error) {
 	env, err := expressions.BotEnvironment(dnsObj)
 	if err != nil {
 		return nil, err
@@ -29,8 +30,9 @@ func NewCELChecker(cfg *config.ExpressionOrList, dnsObj *dns.Dns) (*CELChecker,
 	}
 
 	return &CELChecker{
-		src:     cfg.String(),
-		program: program,
+		src:            cfg.String(),
+		program:        program,
+		subRequestMode: subRequestMode,
 	}, nil
 }
 
@@ -39,7 +41,7 @@ func (cc *CELChecker) Hash() string {
 }
 
 func (cc *CELChecker) Check(r *http.Request) (bool, error) {
-	result, _, err := cc.program.ContextEval(r.Context(), &CELRequest{r})
+	result, _, err := cc.program.ContextEval(r.Context(), &CELRequest{r, cc.subRequestMode})
 
 	if err != nil {
 		return false, err
@@ -54,6 +56,7 @@ func (cc *CELChecker) Check(r *http.Request) (bool, error) {
 
 type CELRequest struct {
 	*http.Request
+	subRequestMode bool
 }
 
 func (cr *CELRequest) Parent() cel.Activation { return nil }
@@ -71,6 +74,14 @@ func (cr *CELRequest) ResolveName(name string) (any, bool) {
 	case "userAgent":
 		return cr.UserAgent(), true
 	case "path":
+		if cr.subRequestMode {
+			if xou := cr.Header.Get("X-Original-URI"); xou != "" {
+				return xou, true
+			}
+			if xfu := cr.Header.Get("X-Forwarded-Uri"); xfu != "" {
+				return xfu, true
+			}
+		}
 		return cr.URL.Path, true
 	case "query":
 		return expressions.URLValues{Values: cr.URL.Query()}, true

lib/policy/celchecker_test.go

@@ -23,7 +23,7 @@ func TestCELChecker_MapIterationWrappers(t *testing.T) {
 		Expression: `headers.exists(k, k == "Accept") && query.exists(k, k == "format")`,
 	}
 
-	checker, err := NewCELChecker(cfg, newTestDNS(t))
+	checker, err := NewCELChecker(cfg, newTestDNS(t), false)
 	if err != nil {
 		t.Fatalf("creating CEL checker failed: %v", err)
 	}
@@ -42,3 +42,77 @@ func TestCELChecker_MapIterationWrappers(t *testing.T) {
 		t.Fatal("expected expression to evaluate true")
 	}
 }
+
+func TestCELChecker_PathWithForwardedUri(t *testing.T) {
+	tests := []struct {
+		name           string
+		expression     string
+		xForwardedUri  string
+		urlPath        string
+		subRequestMode bool
+		want           bool
+	}{
+		{
+			name:           "path matches X-Forwarded-Uri in subrequest mode",
+			expression:     `path.startsWith("/admin")`,
+			xForwardedUri:  "/admin/secret",
+			urlPath:        "/.within.website/x/cmd/anubis/api/check",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "path with query string",
+			expression:     `path.startsWith("/api/secret")`,
+			xForwardedUri:  "/api/secret?token=abc",
+			urlPath:        "/.within.website/x/cmd/anubis/api/check",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "path falls back to url path when no header",
+			expression:     `path == "/public/page"`,
+			urlPath:        "/public/page",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "non-subrequest mode ignores X-Forwarded-Uri",
+			expression:     `path.startsWith("/admin")`,
+			xForwardedUri:  "/admin/secret",
+			urlPath:        "/public/page",
+			subRequestMode: false,
+			want:           false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := &config.ExpressionOrList{
+				Expression: tt.expression,
+			}
+			checker, err := NewCELChecker(cfg, newTestDNS(t), tt.subRequestMode)
+			if err != nil {
+				t.Fatalf("NewCELChecker() error: %v", err)
+			}
+
+			req, err := http.NewRequest(http.MethodGet, "http://example.com"+tt.urlPath, nil)
+			if err != nil {
+				t.Fatalf("http.NewRequest: %v", err)
+			}
+
+			if tt.xForwardedUri != "" {
+				req.Header.Set("X-Forwarded-Uri", tt.xForwardedUri)
+			}
+
+			got, err := checker.Check(req)
+			if err != nil {
+				t.Fatalf("Check() error: %v", err)
+			}
+
+			if got != tt.want {
+				t.Errorf("Check() = %v, want %v (subRequestMode=%v, urlPath=%q, X-Forwarded-Uri=%q)",
+					got, tt.want, tt.subRequestMode, tt.urlPath, tt.xForwardedUri)
+			}
+		})
+	}
+}

lib/policy/checker.go

@@ -94,23 +94,29 @@ func (hmc *HeaderMatchesChecker) Hash() string {
 }
 
 type PathChecker struct {
-	regexp *regexp.Regexp
-	hash   string
+	regexp         *regexp.Regexp
+	hash           string
+	subRequestMode bool
 }
 
-func NewPathChecker(rexStr string) (checker.Impl, error) {
+func NewPathChecker(rexStr string, subrequestMode bool) (checker.Impl, error) {
 	rex, err := regexp.Compile(strings.TrimSpace(rexStr))
 	if err != nil {
 		return nil, fmt.Errorf("%w: regex %s failed parse: %w", ErrMisconfiguration, rexStr, err)
 	}
-	return &PathChecker{rex, internal.FastHash(rexStr)}, nil
+	return &PathChecker{rex, internal.FastHash(rexStr), subrequestMode}, nil
 }
 
 func (pc *PathChecker) Check(r *http.Request) (bool, error) {
-	originalUrl := r.Header.Get("X-Original-URI")
-	if originalUrl != "" {
-		if pc.regexp.MatchString(originalUrl) {
-			return true, nil
+	if pc.subRequestMode {
+		originalUrl := r.Header.Get("X-Original-URI")
+		if originalUrl == "" {
+			originalUrl = r.Header.Get("X-Forwarded-Uri")
+		}
+		if originalUrl != "" {
+			if pc.regexp.MatchString(originalUrl) {
+				return true, nil
+			}
 		}
 	}
 

lib/policy/checker_test.go

@@ -272,8 +272,8 @@ func TestPathChecker_XOriginalURI(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			// Create the PathChecker
-			pc, err := NewPathChecker(tt.regex)
+			// Create the PathChecker in subrequest mode so X-Original-URI is honored.
+			pc, err := NewPathChecker(tt.regex, true)
 			if err != nil {
 				if !tt.expectError {
 					t.Fatalf("NewPathChecker() unexpected error: %v", err)
@@ -305,3 +305,224 @@ func TestPathChecker_XOriginalURI(t *testing.T) {
 		})
 	}
 }
+
+// TestPathChecker_GHSA_6wcg_mqvh_fcvg is a regression test for
+// https://github.com/TecharoHQ/anubis/security/advisories/GHSA-6wcg-mqvh-fcvg.
+//
+// PR https://github.com/TecharoHQ/anubis/pull/1015 added the ability for
+// reverse proxies using Anubis in subrequest auth mode to look at the path
+// of a request as there are many rules in the wild that rely on checking
+// the path. This is how access to things like robots.txt or anything in the
+// .well-known directory is unaffected by Anubis.
+//
+// However this logic was also enabled for non-subrequest deployments of Anubis,
+// meaning that a specially crafted request could include a /.well-known/
+// path in it and then get around Anubis with little effort.
+//
+// This fix gates the logic behind a new plumbed variable named subrequestMode
+// that only fires when Anubis is running in subrequest auth mode. This
+// properly contains that workaround so that the logic does not fire in
+// most deployments.
+func TestPathChecker_GHSA_6wcg_mqvh_fcvg(t *testing.T) {
+	tests := []struct {
+		name           string
+		regex          string
+		urlPath        string
+		xOriginalURI   string
+		subRequestMode bool
+		want           bool
+	}{
+		{
+			name:           "default mode ignores spoofed X-Original-URI when real path matches",
+			regex:          "^/admin/.*",
+			urlPath:        "/admin/secret",
+			xOriginalURI:   "/public/index",
+			subRequestMode: false,
+			want:           true,
+		},
+		{
+			name:           "default mode ignores spoofed X-Original-URI when real path does not match",
+			regex:          "^/admin/.*",
+			urlPath:        "/public/index",
+			xOriginalURI:   "/admin/secret",
+			subRequestMode: false,
+			want:           false,
+		},
+		{
+			name:           "default mode without X-Original-URI matches real path",
+			regex:          "^/admin/.*",
+			urlPath:        "/admin/dashboard",
+			xOriginalURI:   "",
+			subRequestMode: false,
+			want:           true,
+		},
+		{
+			name:           "subrequest mode honors X-Original-URI",
+			regex:          "^/admin/.*",
+			urlPath:        "/auth",
+			xOriginalURI:   "/admin/secret",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "subrequest mode falls back to URL.Path when X-Original-URI does not match",
+			regex:          "^/admin/.*",
+			urlPath:        "/admin/dashboard",
+			xOriginalURI:   "/public/index",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "subrequest mode with empty X-Original-URI uses URL.Path",
+			regex:          "^/admin/.*",
+			urlPath:        "/admin/dashboard",
+			xOriginalURI:   "",
+			subRequestMode: true,
+			want:           true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			pc, err := NewPathChecker(tt.regex, tt.subRequestMode)
+			if err != nil {
+				t.Fatalf("NewPathChecker(%q, %v) returned error: %v", tt.regex, tt.subRequestMode, err)
+			}
+
+			req, err := http.NewRequest(http.MethodGet, "http://example.com"+tt.urlPath, nil)
+			if err != nil {
+				t.Fatalf("http.NewRequest: %v", err)
+			}
+
+			if tt.xOriginalURI != "" {
+				req.Header.Set("X-Original-URI", tt.xOriginalURI)
+			}
+
+			got, err := pc.Check(req)
+			if err != nil {
+				t.Fatalf("Check() unexpected error: %v", err)
+			}
+
+			if got != tt.want {
+				t.Errorf("Check() = %v, want %v (subRequestMode=%v, urlPath=%q, X-Original-URI=%q)",
+					got, tt.want, tt.subRequestMode, tt.urlPath, tt.xOriginalURI)
+			}
+		})
+	}
+}
+
+func TestPathChecker_XForwardedUri(t *testing.T) {
+	tests := []struct {
+		name           string
+		regex          string
+		xForwardedUri  string
+		xOriginalURI   string
+		urlPath        string
+		subRequestMode bool
+		want           bool
+	}{
+		{
+			name:           "X-Forwarded-Uri matches regex in subrequest mode",
+			regex:          "^/admin/.*",
+			xForwardedUri:  "/admin/users",
+			urlPath:        "/.within.website/x/cmd/anubis/api/check",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "X-Forwarded-Uri with query string",
+			regex:          "^/admin/.*",
+			xForwardedUri:  "/admin/users?page=1",
+			urlPath:        "/.within.website/x/cmd/anubis/api/check",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "X-Original-URI takes priority over X-Forwarded-Uri",
+			regex:          "^/admin/.*",
+			xForwardedUri:  "/public/page",
+			xOriginalURI:   "/admin/users",
+			urlPath:        "/.within.website/x/cmd/anubis/api/check",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "falls back to X-Forwarded-Uri when no X-Original-URI",
+			regex:          "^/admin/.*",
+			xForwardedUri:  "/admin/dashboard",
+			urlPath:        "/.within.website/x/cmd/anubis/api/check",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "neither header matches, url path matches",
+			regex:          "^/public/.*",
+			xForwardedUri:  "/admin/users",
+			urlPath:        "/public/page",
+			subRequestMode: true,
+			want:           true,
+		},
+		{
+			name:           "nothing matches",
+			regex:          "^/admin/.*",
+			xForwardedUri:  "/public/page",
+			urlPath:        "/.within.website/x/cmd/anubis/api/check",
+			subRequestMode: true,
+			want:           false,
+		},
+		{
+			name:           "non-subrequest mode ignores X-Forwarded-Uri",
+			regex:          "^/admin/.*",
+			xForwardedUri:  "/admin/users",
+			urlPath:        "/public/page",
+			subRequestMode: false,
+			want:           false,
+		},
+		{
+			name:           "non-subrequest mode uses url path",
+			regex:          "^/admin/.*",
+			xForwardedUri:  "/public/page",
+			urlPath:        "/admin/secret",
+			subRequestMode: false,
+			want:           true,
+		},
+		{
+			name:           "empty X-Forwarded-Uri falls back to url path",
+			regex:          "^/check$",
+			urlPath:        "/check",
+			subRequestMode: true,
+			want:           true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			pc, err := NewPathChecker(tt.regex, tt.subRequestMode)
+			if err != nil {
+				t.Fatalf("NewPathChecker(%q, %v) returned error: %v", tt.regex, tt.subRequestMode, err)
+			}
+
+			req, err := http.NewRequest(http.MethodGet, "http://example.com"+tt.urlPath, nil)
+			if err != nil {
+				t.Fatalf("http.NewRequest: %v", err)
+			}
+
+			if tt.xForwardedUri != "" {
+				req.Header.Set("X-Forwarded-Uri", tt.xForwardedUri)
+			}
+			if tt.xOriginalURI != "" {
+				req.Header.Set("X-Original-URI", tt.xOriginalURI)
+			}
+
+			got, err := pc.Check(req)
+			if err != nil {
+				t.Fatalf("Check() unexpected error: %v", err)
+			}
+
+			if got != tt.want {
+				t.Errorf("Check() = %v, want %v (subRequestMode=%v, urlPath=%q, X-Forwarded-Uri=%q, X-Original-URI=%q)",
+					got, tt.want, tt.subRequestMode, tt.urlPath, tt.xForwardedUri, tt.xOriginalURI)
+			}
+		})
+	}
+}

lib/policy/policy.go

@@ -27,7 +27,7 @@ var (
 	Applications = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name: "anubis_policy_results",
 		Help: "The results of each policy rule",
-	}, []string{"rule", "action"})
+	}, []string{"rule", "action", "asn", "asn_description"})
 
 	ErrChallengeRuleHasWrongAlgorithm = errors.New("config.Bot.ChallengeRules: algorithm is invalid")
 	warnedAboutThresholds             = &atomic.Bool{}
@@ -47,6 +47,8 @@ type ParsedConfig struct {
 	Dns               *dns.Dns
 	Logger            *slog.Logger
 	Metrics           *config.Metrics
+	ThothClient       *thoth.Client
+	LogASN            bool
 }
 
 func newParsedConfig(orig *config.Config) *ParsedConfig {
@@ -58,7 +60,7 @@ func newParsedConfig(orig *config.Config) *ParsedConfig {
 	}
 }
 
-func ParseConfig(ctx context.Context, fin io.Reader, fname string, defaultDifficulty int, logLevel string) (*ParsedConfig, error) {
+func ParseConfig(ctx context.Context, fin io.Reader, fname string, defaultDifficulty int, logLevel string, subrequestMode bool) (*ParsedConfig, error) {
 	c, err := config.Load(fin, fname)
 	if err != nil {
 		return nil, err
@@ -70,6 +72,10 @@ func ParseConfig(ctx context.Context, fin io.Reader, fname string, defaultDiffic
 
 	result := newParsedConfig(c)
 	result.DefaultDifficulty = defaultDifficulty
+	result.LogASN = c.Logging.LogASN
+	if hasThothClient {
+		result.ThothClient = tc
+	}
 
 	if c.Logging.Level != nil {
 		logLevel = c.Logging.Level.String()
@@ -94,6 +100,10 @@ func ParseConfig(ctx context.Context, fin io.Reader, fname string, defaultDiffic
 
 	lg := result.Logger.With("at", "config-validate")
 
+	if result.LogASN && !hasThothClient {
+		lg.Warn("logging.asn is enabled but no Thoth client is configured; ASN logging and metrics will be skipped. Please read https://anubis.techaro.lol/docs/admin/thoth for more information")
+	}
+
 	stFac, ok := store.Get(c.Store.Backend)
 	switch ok {
 	case true:
@@ -142,7 +152,7 @@ func ParseConfig(ctx context.Context, fin io.Reader, fname string, defaultDiffic
 		}
 
 		if b.PathRegex != nil {
-			c, err := NewPathChecker(*b.PathRegex)
+			c, err := NewPathChecker(*b.PathRegex, subrequestMode)
 			if err != nil {
 				validationErrs = append(validationErrs, fmt.Errorf("while processing rule %s path regex: %w", b.Name, err))
 			} else {
@@ -160,7 +170,7 @@ func ParseConfig(ctx context.Context, fin io.Reader, fname string, defaultDiffic
 		}
 
 		if b.Expression != nil {
-			c, err := NewCELChecker(b.Expression, result.Dns)
+			c, err := NewCELChecker(b.Expression, result.Dns, subrequestMode)
 			if err != nil {
 				validationErrs = append(validationErrs, fmt.Errorf("while processing rule %s expressions: %w", b.Name, err))
 			} else {

lib/policy/policy_test.go

@@ -19,7 +19,7 @@ func TestDefaultPolicyMustParse(t *testing.T) {
 	}
 	defer fin.Close()
 
-	if _, err := ParseConfig(ctx, fin, "botPolicies.yaml", anubis.DefaultDifficulty, "info"); err != nil {
+	if _, err := ParseConfig(ctx, fin, "botPolicies.yaml", anubis.DefaultDifficulty, "info", false); err != nil {
 		t.Fatalf("can't parse config: %v", err)
 	}
 }
@@ -41,7 +41,7 @@ func TestGoodConfigs(t *testing.T) {
 				defer fin.Close()
 
 				ctx := thothmock.WithMockThoth(t)
-				if _, err := ParseConfig(ctx, fin, fin.Name(), anubis.DefaultDifficulty, "info"); err != nil {
+				if _, err := ParseConfig(ctx, fin, fin.Name(), anubis.DefaultDifficulty, "info", false); err != nil {
 					t.Fatal(err)
 				}
 			})
@@ -53,7 +53,7 @@ func TestGoodConfigs(t *testing.T) {
 				}
 				defer fin.Close()
 
-				if _, err := ParseConfig(t.Context(), fin, fin.Name(), anubis.DefaultDifficulty, "info"); err != nil {
+				if _, err := ParseConfig(t.Context(), fin, fin.Name(), anubis.DefaultDifficulty, "info", false); err != nil {
 					t.Fatal(err)
 				}
 			})
@@ -77,7 +77,7 @@ func TestBadConfigs(t *testing.T) {
 			}
 			defer fin.Close()
 
-			if _, err := ParseConfig(ctx, fin, fin.Name(), anubis.DefaultDifficulty, "info"); err == nil {
+			if _, err := ParseConfig(ctx, fin, fin.Name(), anubis.DefaultDifficulty, "info", false); err == nil {
 				t.Fatal(err)
 			} else {
 				t.Log(err)

lib/thoth/geoipchecker.go

@@ -18,7 +18,7 @@ func (c *Client) GeoIPCheckerFor(countries []string) checker.Impl {
 	var sb strings.Builder
 	fmt.Fprintln(&sb, "GeoIPChecker")
 	for _, cc := range countries {
-		countryMap[cc] = struct{}{}
+		countryMap[strings.ToLower(cc)] = struct{}{}
 		fmt.Fprintln(&sb, cc)
 	}
 

package.json

@@ -20,11 +20,11 @@
   "author": "",
   "license": "ISC",
   "devDependencies": {
-    "@commitlint/cli": "^20.5.0",
-    "@commitlint/config-conventional": "^20.5.0",
-    "baseline-browser-mapping": "^2.10.15",
-    "cssnano": "^7.1.4",
-    "cssnano-preset-advanced": "^7.0.12",
+    "@commitlint/cli": "^20.5.3",
+    "@commitlint/config-conventional": "^20.5.3",
+    "baseline-browser-mapping": "^2.10.27",
+    "cssnano": "^7.1.8",
+    "cssnano-preset-advanced": "^7.0.16",
     "esbuild": "^0.28.0",
     "husky": "^9.1.7",
     "playwright": "^1.52.0",
@@ -32,7 +32,7 @@
     "postcss-import": "^16.1.1",
     "postcss-import-url": "^7.2.0",
     "postcss-url": "^10.1.3",
-    "prettier": "^3.8.1"
+    "prettier": "^3.8.3"
   },
   "dependencies": {
     "@aws-crypto/sha256-js": "^5.2.0",

test/traefik/anubis.yaml

@@ -0,0 +1,16 @@
+bots:
+  - name: block-admin-via-regex
+    path_regex: ^/admin(/.*)?$
+    action: DENY
+
+  - name: block-secret-via-cel
+    expression:
+      all:
+        - 'path.startsWith("/api/secret")'
+    action: DENY
+
+  - import: (data)/meta/default-config.yaml
+
+status_codes:
+  CHALLENGE: 200
+  DENY: 403

test/traefik/docker-compose.yaml

@@ -0,0 +1,27 @@
+services:
+  traefik:
+    image: traefik:v3.3
+    restart: always
+    ports:
+      - 8080:80
+    volumes:
+      - ./traefik.yml:/etc/traefik/traefik.yml:ro
+      - ./http.yaml:/config/http.yaml:ro
+
+  anubis:
+    image: ko.local/anubis
+    restart: always
+    environment:
+      BIND: ":8080"
+      TARGET: " "
+      POLICY_FNAME: /etc/techaro/anubis.yaml
+      PUBLIC_URL: http://localhost:8080/.within.website/x/cmd/anubis
+      COOKIE_DOMAIN: localhost
+      USE_REMOTE_ADDRESS: "true"
+    volumes:
+      - ./anubis.yaml:/etc/techaro/anubis.yaml
+
+  backend:
+    image: ghcr.io/xe/x/httpdebug
+    pull_policy: always
+    restart: always

test/traefik/http.yaml

@@ -0,0 +1,30 @@
+http:
+  middlewares:
+    anubis:
+      forwardAuth:
+        address: http://anubis:8080/.within.website/x/cmd/anubis/api/check
+        trustForwardHeader: true
+
+  routers:
+    anubis-assets:
+      rule: Host(`localhost`) && PathPrefix(`/.within.website/x/cmd/anubis`)
+      entryPoints:
+        - web
+      service: anubis
+    backend:
+      rule: Host(`localhost`)
+      entryPoints:
+        - web
+      service: backend
+      middlewares:
+        - anubis
+
+  services:
+    anubis:
+      loadBalancer:
+        servers:
+          - url: http://anubis:8080
+    backend:
+      loadBalancer:
+        servers:
+          - url: http://backend:3000

test/traefik/test.mjs

@@ -0,0 +1,33 @@
+// Smoke test for https://github.com/TecharoHQ/anubis/issues/1628
+//
+// Traefik's forwardAuth middleware calls Anubis at the literal path
+// /.within.website/x/cmd/anubis/api/check and conveys the original URL in the
+// X-Forwarded-Uri header. Path-targeting policy rules must match that header
+// (not r.URL.Path), otherwise every request looks like a request to /check.
+
+const BASE = "http://localhost:8080";
+const UA = "Mozilla/5.0 (compatible; AnubisTraefikSmoke/1.0)";
+
+const cases = [
+  { path: "/", expected: 307, why: "control: no DENY rule, default challenge redirect" },
+  { path: "/free", expected: 307, why: "control: no DENY rule, default challenge redirect" },
+  { path: "/admin", expected: 403, why: "path_regex must match X-Forwarded-Uri, not 307 or 200" },
+  { path: "/admin/users", expected: 403, why: "path_regex must match X-Forwarded-Uri, not 307 or 200" },
+  { path: "/api/secret", expected: 403, why: "CEL path must match X-Forwarded-Uri, not 307 or 200" },
+];
+
+let failed = false;
+
+for (const c of cases) {
+  const resp = await fetch(`${BASE}${c.path}`, {
+    headers: { "User-Agent": UA },
+    redirect: "manual",
+  });
+  const ok = resp.status === c.expected;
+  console.log(
+    `${ok ? "PASS" : "FAIL"}: GET ${c.path} → ${resp.status} (want ${c.expected}: ${c.why})`,
+  );
+  if (!ok) failed = true;
+}
+
+process.exit(failed ? 1 : 0);

test/traefik/test.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+set -eo pipefail
+
+export VERSION=${GITHUB_SHA:-devel}-test
+export KO_DOCKER_REPO=ko.local
+
+set -u
+
+source ../lib/lib.sh
+
+build_anubis_ko
+
+function cleanup() {
+	docker compose down -t 1 || :
+}
+
+trap cleanup EXIT SIGINT
+
+docker compose up -d
+
+backoff-retry --try-count 20 node ./test.mjs

test/traefik/traefik.yml

@@ -0,0 +1,8 @@
+entryPoints:
+  web:
+    address: ":80"
+
+providers:
+  file:
+    directory: /config
+    watch: false

test/traefik/var/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore