Initial commit

checker/rules_auth.go

@@ -0,0 +1,61 @@
+// This file is part of the happyDomain (R) project.
+// Copyright (c) 2020-2026 happyDomain
+// Authors: Pierre-Olivier Mercier, et al.
+//
+// This program is offered under a commercial and under the AGPL license.
+// For commercial licensing, contact us at <contact@happydomain.org>.
+//
+// For AGPL licensing:
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package checker
+
+import (
+	"context"
+
+	sdk "git.happydns.org/checker-sdk-go/checker"
+)
+
+// authMethodsRule reports on the authentication methods advertised by
+// the server (password exposure, missing public-key support). Only
+// active when the auth probe ran.
+type authMethodsRule struct{}
+
+func (r *authMethodsRule) Name() string { return "ssh.auth_methods" }
+func (r *authMethodsRule) Description() string {
+	return "Reviews the advertised authentication methods (password exposure, public-key availability)."
+}
+
+func (r *authMethodsRule) Evaluate(ctx context.Context, obs sdk.ObservationGetter, _ sdk.CheckerOptions) []sdk.CheckState {
+	data, errSt := loadSSHData(ctx, obs)
+	if errSt != nil {
+		return []sdk.CheckState{*errSt}
+	}
+	var probed bool
+	var issues []Issue
+	for _, ep := range data.Endpoints {
+		if !ep.AuthProbeAttempted {
+			continue
+		}
+		probed = true
+		issues = append(issues, analyseAuthMethods(ep.Address, &ep)...)
+	}
+	if !probed {
+		return []sdk.CheckState{notTestedState("ssh.auth_methods.skipped", "Authentication-method enumeration disabled or not performed.")}
+	}
+	if len(issues) == 0 {
+		return []sdk.CheckState{passState("ssh.auth_methods.ok", "Authentication method posture looks sound.")}
+	}
+	return statesFromIssues(issues)
+}