;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2017 Thomas Danckaert <post@thomasdanckaert.be> ;;; Copyright © 2017 Marius Bakke <mbakke@fastmail.com> ;;; Copyright © 2018 Chris Marusich <cmmarusich@gmail.com> ;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.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 networking) #:use-module (gnu tests) #:use-module (gnu system) #:use-module (gnu system vm) #:use-module (gnu services) #:use-module (gnu services base) #:use-module (gnu services networking) #:use-module (guix gexp) #:use-module (guix store) #:use-module (guix monads) #:use-module (gnu packages bash) #:use-module (gnu packages linux) #:use-module (gnu packages networking) #:use-module (gnu services shepherd) #:use-module (ice-9 match) #:export (%test-inetd %test-openvswitch %test-dhcpd %test-tor %test-iptables)) (define %inetd-os ;; Operating system with 2 inetd services. (simple-operating-system (service dhcp-client-service-type) (service inetd-service-type (inetd-configuration (entries (list (inetd-entry (name "echo") (socket-type 'stream) (protocol "tcp") (wait? #f) (user "root")) (inetd-entry (name "dict") (socket-type 'stream) (protocol "tcp") (wait? #f) (user "root") (program (file-append bash "/bin/bash")) (arguments (list "bash" (plain-file "my-dict.sh" "\ while read line do if [[ $line =~ ^DEFINE\\ (.*)$ ]] then case ${BASH_REMATCH[1]} in Guix) echo GNU Guix is a package management tool for the GNU system. ;; G-expression) echo Like an S-expression but with a G. ;; *) echo NO DEFINITION FOUND ;; esac else echo ERROR fi done" )))))))))) (define* (run-inetd-test) "Run tests in %INETD-OS, where the inetd service provides an echo service on port 7, and a dict service on port 2628." (define os (marionette-operating-system %inetd-os)) (define vm (virtual-machine (operating-system os) (port-forwardings `((8007 . 7) (8628 . 2628))))) (define test (with-imported-modules '((gnu build marionette)) #~(begin (use-modules (ice-9 rdelim) (srfi srfi-64) (gnu build marionette)) (define marionette (make-marionette (list #$vm))) (mkdir #$output) (chdir #$output) (test-begin "inetd") ;; Make sure the PID file is created. (test-assert "PID file" (marionette-eval '(file-exists? "/var/run/inetd.pid") marionette)) ;; Test the echo service. (test-equal "echo response" "Hello, Guix!" (let ((echo (socket PF_INET SOCK_STREAM 0)) (addr (make-socket-address AF_INET INADDR_LOOPBACK 8007))) (connect echo addr) (display "Hello, Guix!\n" echo) (let ((response (read-line echo))) (close echo) response))) ;; Test the dict service (test-equal "dict response" "GNU Guix is a package management tool for the GNU system." (let ((dict (socket PF_INET SOCK_STREAM 0)) (addr (make-socket-address AF_INET INADDR_LOOPBACK 8628))) (connect dict addr) (display "DEFINE Guix\n" dict) (let ((response (read-line dict))) (close dict) response))) (test-end) (exit (= (test-runner-fail-count (test-runner-current)) 0))))) (gexp->derivation "inetd-test" test)) (define %test-inetd (system-test (name "inetd") (description "Connect to a host with an INETD server.") (value (run-inetd-test)))) ;;; ;;; Open vSwitch ;;; (define setup-openvswitch #~(let ((ovs-vsctl (lambda (str) (zero? (apply system* #$(file-append openvswitch "/bin/ovs-vsctl") (string-tokenize str))))) (add-native-port (lambda (if) (string-append "--may-exist add-port br0 " if " vlan_mode=native-untagged" " -- set Interface " if " type=internal")))) (and (ovs-vsctl "--may-exist add-br br0") ;; Connect eth0 as an "untagged" port (no VLANs). (ovs-vsctl "--may-exist add-port br0 eth0 vlan_mode=native-untagged") (ovs-vsctl (add-native-port "ovs0"))))) (define openvswitch-configuration-service (simple-service 'openvswitch-configuration shepherd-root-service-type (list (shepherd-service (provision '(openvswitch-configuration)) (requirement '(vswitchd)) (start #~(lambda () #$setup-openvswitch)) (respawn? #f))))) (define %openvswitch-os (simple-operating-system (static-networking-service "ovs0" "10.1.1.1" #:netmask "255.255.255.252" #:requirement '(openvswitch-configuration)) (service openvswitch-service-type (openvswitch-configuration (package openvswitch))) openvswitch-configuration-service)) (define (run-openvswitch-test) (define os (marionette-operating-system %openvswitch-os #:imported-modules '((gnu services herd)))) (define test (with-imported-modules '((gnu build marionette)) #~(begin (use-modules (gnu build marionette) (ice-9 popen) (ice-9 rdelim) (srfi srfi-64)) (define marionette (make-marionette (list #$(virtual-machine os)))) (mkdir #$output) (chdir #$output) (test-begin "openvswitch") ;; Make sure the bridge is created. (test-assert "br0 exists" (marionette-eval '(zero? (system* "ovs-vsctl" "br-exists" "br0")) marionette)) ;; Make sure eth0 is connected to the bridge. (test-equal "eth0 is connected to br0" "br0" (marionette-eval '(begin (use-modules (ice-9 popen) (ice-9 rdelim)) (let* ((port (open-pipe* OPEN_READ (string-append #$openvswitch "/bin/ovs-vsctl") "port-to-br" "eth0")) (output (read-line port))) (close-pipe port) output)) marionette)) ;; Make sure the virtual interface got a static IP. (test-assert "networking has started on ovs0" (marionette-eval '(begin (use-modules (gnu services herd) (srfi srfi-1)) (live-service-running (find (lambda (live) (memq 'networking-ovs0 (live-service-provision live))) (current-services)))) marionette)) (test-end) (exit (= (test-runner-fail-count (test-runner-current)) 0))))) (gexp->derivation "openvswitch-test" test)) (define %test-openvswitch (system-test (name "openvswitch") (description "Test a running OpenvSwitch configuration.") (value (run-openvswitch-test)))) ;;; ;;; DHCP Daemon ;;; (define minimal-dhcpd-v4-config-file (plain-file "dhcpd.conf" "\ default-lease-time 600; max-lease-time 7200; subnet 192.168.1.0 netmask 255.255.255.0 { range 192.168.1.100 192.168.1.200; option routers 192.168.1.1; option domain-name-servers 192.168.1.2, 192.168.1.3; option domain-name \"dummy.domain.name.abc123xyz\"; } ")) (define dhcpd-v4-configuration (dhcpd-configuration (config-file minimal-dhcpd-v4-config-file) (version "4") (interfaces '("eth0")))) (define %dhcpd-os (simple-operating-system (static-networking-service "eth0" "192.168.1.4" #:netmask "255.255.255.0" #:gateway "192.168.1.1" #:name-servers '("192.168.1.2" "192.168.1.3")) (service dhcpd-service-type dhcpd-v4-configuration))) (define (run-dhcpd-test) (define os (marionette-operating-system %dhcpd-os #:imported-modules '((gnu services herd)))) (define test (with-imported-modules '((gnu build marionette)) #~(begin (use-modules (gnu build marionette) (ice-9 popen) (ice-9 rdelim) (srfi srfi-64)) (define marionette (make-marionette (list #$(virtual-machine os)))) (mkdir #$output) (chdir #$output) (test-begin "dhcpd") (test-assert "pid file exists" (marionette-eval '(file-exists? #$(dhcpd-configuration-pid-file dhcpd-v4-configuration)) marionette)) (test-assert "lease file exists" (marionette-eval '(file-exists? #$(dhcpd-configuration-lease-file dhcpd-v4-configuration)) marionette)) (test-assert "run directory exists" (marionette-eval '(file-exists? #$(dhcpd-configuration-run-directory dhcpd-v4-configuration)) marionette)) (test-assert "dhcpd is alive" (marionette-eval '(begin (use-modules (gnu services herd) (srfi srfi-1)) (live-service-running (find (lambda (live) (memq 'dhcpv4-daemon (live-service-provision live))) (current-services)))) marionette)) (test-end) (exit (= (test-runner-fail-count (test-runner-current)) 0))))) (gexp->derivation "dhcpd-test" test)) (define %test-dhcpd (system-test (name "dhcpd") (description "Test a running DHCP daemon configuration.") (value (run-dhcpd-test)))) ;;; ;;; Services related to Tor ;;; (define %tor-os (simple-operating-system (tor-service))) (define %tor-os/unix-socks-socket (simple-operating-system (service tor-service-type (tor-configuration (socks-socket-type 'unix))))) (define (run-tor-test) (define os (marionette-operating-system %tor-os #:imported-modules '((gnu services herd)) #:requirements '(tor))) (define os/unix-socks-socket (marionette-operating-system %tor-os/unix-socks-socket #:imported-modules '((gnu services herd)) #:requirements '(tor))) (define test (with-imported-modules '((gnu build marionette)) #~(begin (use-modules (gnu build marionette) (ice-9 popen) (ice-9 rdelim) (srfi srfi-64)) (define marionette (make-marionette (list #$(virtual-machine os)))) (define (tor-is-alive? marionette) (marionette-eval '(begin (use-modules (gnu services herd) (srfi srfi-1)) (live-service-running (find (lambda (live) (memq 'tor (live-service-provision live))) (current-services)))) marionette)) (mkdir #$output) (chdir #$output) (test-begin "tor") ;; Test the usual Tor service. (test-assert "tor is alive" (tor-is-alive? marionette)) (test-assert "tor is listening" (let ((default-port 9050)) (wait-for-tcp-port default-port marionette))) ;; Don't run two VMs at once. (marionette-control "quit" marionette) ;; Test the Tor service using a SOCKS socket. (let* ((socket-directory "/tmp/more-sockets") (_ (mkdir socket-directory)) (marionette/unix-socks-socket (make-marionette (list #$(virtual-machine os/unix-socks-socket)) ;; We can't use the same socket directory as the first ;; marionette. #:socket-directory socket-directory))) (test-assert "tor is alive, even when using a SOCKS socket" (tor-is-alive? marionette/unix-socks-socket)) (test-assert "tor is listening, even when using a SOCKS socket" (wait-for-unix-socket "/var/run/tor/socks-sock" marionette/unix-socks-socket))) (test-end) (exit (= (test-runner-fail-count (test-runner-current)) 0))))) (gexp->derivation "tor-test" test)) (define %test-tor (system-test (name "tor") (description "Test a running Tor daemon configuration.") (value (run-tor-test)))) (define* (run-iptables-test) "Run tests of 'iptables-service-type'." (define iptables-rules "*filter :INPUT ACCEPT :FORWARD ACCEPT :OUTPUT ACCEPT -A INPUT -p tcp -m tcp --dport 7 -j REJECT --reject-with icmp-port-unreachable COMMIT ") (define ip6tables-rules "*filter :INPUT ACCEPT :FORWARD ACCEPT :OUTPUT ACCEPT -A INPUT -p tcp -m tcp --dport 7 -j REJECT --reject-with icmp6-port-unreachable COMMIT ") (define inetd-echo-port 7) (define os (marionette-operating-system (simple-operating-system (service dhcp-client-service-type) (service inetd-service-type (inetd-configuration (entries (list (inetd-entry (name "echo") (socket-type 'stream) (protocol "tcp") (wait? #f) (user "root")))))) (service iptables-service-type (iptables-configuration (ipv4-rules (plain-file "iptables.rules" iptables-rules)) (ipv6-rules (plain-file "ip6tables.rules" ip6tables-rules))))) #:imported-modules '((gnu services herd)) #:requirements '(inetd iptables))) (define test (with-imported-modules '((gnu build marionette)) #~(begin (use-modules (srfi srfi-64) (gnu build marionette)) (define marionette (make-marionette (list #$(virtual-machine os)))) (define (dump-iptables iptables-save marionette) (marionette-eval `(begin (use-modules (ice-9 popen) (ice-9 rdelim) (ice-9 regex)) (call-with-output-string (lambda (out) (call-with-port (open-pipe* OPEN_READ ,iptables-save) (lambda (in) (let loop ((line (read-line in))) ;; iptables-save does not output rules in the exact ;; same format we loaded using iptables-restore. It ;; adds comments, packet counters, etc. We remove ;; these additions. (unless (eof-object? line) (cond ;; Remove comments ((string-match "^#" line) #t) ;; Remove packet counters ((string-match "^:([A-Z]*) ([A-Z]*) .*" line) => (lambda (match-record) (format out ":~a ~a~%" (match:substring match-record 1) (match:substring match-record 2)))) ;; Pass other lines without modification (else (display line out) (newline out))) (loop (read-line in))))))))) marionette)) (mkdir #$output) (chdir #$output) (test-begin "iptables") (test-equal "iptables-save dumps the same rules that were loaded" (dump-iptables #$(file-append iptables "/sbin/iptables-save") marionette) #$iptables-rules) (test-equal "ip6tables-save dumps the same rules that were loaded" (dump-iptables #$(file-append iptables "/sbin/ip6tables-save") marionette) #$ip6tables-rules) (test-error "iptables firewall blocks access to inetd echo service" 'misc-error (wait-for-tcp-port inetd-echo-port marionette #:timeout 5)) ;; TODO: This test freezes up at the login prompt without any ;; relevant messages on the console. Perhaps it is waiting for some ;; timeout. Find and fix this issue. ;; (test-assert "inetd echo service is accessible after iptables firewall is stopped" ;; (begin ;; (marionette-eval ;; '(begin ;; (use-modules (gnu services herd)) ;; (stop-service 'iptables)) ;; marionette) ;; (wait-for-tcp-port inetd-echo-port marionette #:timeout 5))) (test-end) (exit (= (test-runner-fail-count (test-runner-current)) 0))))) (gexp->derivation "iptables" test)) (define %test-iptables (system-test (name "iptables") (description "Test a running iptables daemon.") (value (run-iptables-test))))