gnu: security: Add fail2ban-service-type.

* gnu/services/security.scm: New module.
* gnu/tests/security.scm: New module.
* gnu/local.mk: Add new security module and tests.
* doc/guix.text: Add fail2ban-service-type documentation.

Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>

1 files changed, 221 insertions, 0 deletions

diff --git a/gnu/tests/security.scm b/gnu/tests/security.scm
new file mode 100644
index 0000000000..ca6c857899
--- /dev/null
+++ b/gnu/tests/security.scm
@@ -0,0 +1,221 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2022 muradm <mail@muradm.net>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix 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 General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu tests security)
+  #:use-module (guix gexp)
+  #:use-module (gnu packages admin)
+  #:use-module (gnu services)
+  #:use-module (gnu services security)
+  #:use-module (gnu services ssh)
+  #:use-module (gnu system)
+  #:use-module (gnu system vm)
+  #:use-module (gnu tests)
+  #:export (%test-fail2ban-basic
+            %test-fail2ban-extension
+            %test-fail2ban-simple))
+
+
+;;;
+;;; fail2ban tests
+;;;
+
+(define-syntax-rule (fail2ban-test test-name test-os tests-more ...)
+  (lambda ()
+    (define os
+      (marionette-operating-system
+       test-os
+       #:imported-modules '((gnu services herd))))
+
+    (define vm
+      (virtual-machine
+       (operating-system os)
+       (port-forwardings '())))
+
+    (define test
+      (with-imported-modules '((gnu build marionette)
+                               (guix build utils))
+        #~(begin
+            (use-modules (srfi srfi-64)
+                         (gnu build marionette))
+
+            (define marionette (make-marionette (list #$vm)))
+
+            (test-runner-current (system-test-runner #$output))
+            (test-begin test-name)
+
+            (test-assert "fail2ban running"
+              (marionette-eval
+               '(begin
+                  (use-modules (gnu services herd))
+                  (start-service 'fail2ban))
+               marionette))
+
+            (test-assert "fail2ban socket ready"
+              (wait-for-unix-socket
+               "/var/run/fail2ban/fail2ban.sock" marionette))
+
+            (test-assert "fail2ban running after restart"
+              (marionette-eval
+               '(begin
+                  (use-modules (gnu services herd))
+                  (restart-service 'fail2ban))
+               marionette))
+
+            (test-assert "fail2ban socket ready after restart"
+              (wait-for-unix-socket
+               "/var/run/fail2ban/fail2ban.sock" marionette))
+
+            (test-assert "fail2ban pid ready"
+              (marionette-eval
+               '(file-exists? "/var/run/fail2ban/fail2ban.pid")
+               marionette))
+
+            (test-assert "fail2ban log file"
+              (marionette-eval
+               '(file-exists? "/var/log/fail2ban.log")
+               marionette))
+
+            tests-more ...
+
+            (test-end))))
+
+    (gexp->derivation test-name test)))
+
+(define run-fail2ban-basic-test
+  (fail2ban-test
+   "fail2ban-basic-test"
+
+   (simple-operating-system
+    (service fail2ban-service-type))))
+
+(define %test-fail2ban-basic
+  (system-test
+   (name "fail2ban-basic")
+   (description "Test basic fail2ban running capability.")
+   (value (run-fail2ban-basic-test))))
+
+(define %fail2ban-server-cmd
+  (program-file
+   "fail2ban-server-cmd"
+   #~(begin
+       (let ((cmd #$(file-append fail2ban "/bin/fail2ban-server")))
+         (apply execl cmd cmd `("-p" "/var/run/fail2ban/fail2ban.pid"
+                                "-s" "/var/run/fail2ban/fail2ban.sock"
+                                ,@(cdr (program-arguments))))))))
+
+(define run-fail2ban-simple-test
+  (fail2ban-test
+   "fail2ban-basic-test"
+
+   (simple-operating-system
+    (service fail2ban-service-type (fail2ban-configuration
+                                    (jails (list (fail2ban-jail-configuration
+                                                  (name "sshd")))))))
+
+   (test-equal "fail2ban sshd jail running status output"
+     '("Status for the jail: sshd"
+       "|- Filter"
+       "|  |- Currently failed:\t0"
+       "|  |- Total failed:\t0"
+       "|  `- File list:\t/var/log/secure"
+       "`- Actions"
+       "   |- Currently banned:\t0"
+       "   |- Total banned:\t0"
+       "   `- Banned IP list:\t"
+       "")
+     (marionette-eval
+      '(begin
+         (use-modules (ice-9 rdelim) (ice-9 popen) (rnrs io ports))
+         (let ((call-command
+                (lambda (cmd)
+                  (let* ((err-cons (pipe))
+                         (port (with-error-to-port (cdr err-cons)
+                                 (lambda () (open-input-pipe cmd))))
+                         (_ (setvbuf (car err-cons) 'block
+                                     (* 1024 1024 16)))
+                         (result (read-delimited "" port)))
+                    (close-port (cdr err-cons))
+                    (values result (read-delimited "" (car err-cons)))))))
+           (string-split
+            (call-command
+             (string-join (list #$%fail2ban-server-cmd "status" "sshd") " "))
+            #\newline)))
+      marionette))
+
+   (test-equal "fail2ban sshd jail running exit code"
+     0
+     (marionette-eval
+      '(status:exit-val (system* #$%fail2ban-server-cmd "status" "sshd"))
+      marionette))))
+
+(define %test-fail2ban-simple
+  (system-test
+   (name "fail2ban-simple")
+   (description "Test simple fail2ban running capability.")
+   (value (run-fail2ban-simple-test))))
+
+(define run-fail2ban-extension-test
+  (fail2ban-test
+   "fail2ban-extension-test"
+
+   (simple-operating-system
+    (service (fail2ban-jail-service openssh-service-type (fail2ban-jail-configuration
+                                                          (name "sshd") (enabled? #t)))
+             (openssh-configuration)))
+
+   (test-equal "fail2ban sshd jail running status output"
+     '("Status for the jail: sshd"
+       "|- Filter"
+       "|  |- Currently failed:\t0"
+       "|  |- Total failed:\t0"
+       "|  `- File list:\t/var/log/secure"
+       "`- Actions"
+       "   |- Currently banned:\t0"
+       "   |- Total banned:\t0"
+       "   `- Banned IP list:\t"
+       "")
+     (marionette-eval
+      '(begin
+         (use-modules (ice-9 rdelim) (ice-9 popen) (rnrs io ports))
+         (let ((call-command
+                (lambda (cmd)
+                  (let* ((err-cons (pipe))
+                         (port (with-error-to-port (cdr err-cons)
+                                 (lambda () (open-input-pipe cmd))))
+                         (_ (setvbuf (car err-cons) 'block
+                                     (* 1024 1024 16)))
+                         (result (read-delimited "" port)))
+                    (close-port (cdr err-cons))
+                    (values result (read-delimited "" (car err-cons)))))))
+           (string-split
+            (call-command
+             (string-join (list #$%fail2ban-server-cmd "status" "sshd") " "))
+            #\newline)))
+      marionette))
+
+   (test-equal "fail2ban sshd jail running exit code"
+     0
+     (marionette-eval
+      '(status:exit-val (system* #$%fail2ban-server-cmd "status" "sshd"))
+      marionette))))
+
+(define %test-fail2ban-extension
+  (system-test
+   (name "fail2ban-extension")
+   (description "Test extension fail2ban running capability.")
+   (value (run-fail2ban-extension-test))))