me
/
guix
Archived
1
0
Fork 0
This repository has been archived on 2024-08-07. You can view files and clone it, but cannot push or open issues/pull-requests.
guix/gnu/services/networking.scm

785 lines
29 KiB
Scheme
Raw Blame History

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 John Darrington <jmd@gnu.org>
;;;
;;; 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 services networking)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu services dbus)
#:use-module (gnu system shadow)
#:use-module (gnu system pam)
#:use-module (gnu packages admin)
#:use-module (gnu packages connman)
#:use-module (gnu packages linux)
#:use-module (gnu packages tor)
#:use-module (gnu packages messaging)
#:use-module (gnu packages ntp)
#:use-module (gnu packages wicd)
#:use-module (gnu packages gnome)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:export (%facebook-host-aliases
static-networking
static-networking-service
static-networking-service-type
dhcp-client-service
%ntp-servers
ntp-configuration
ntp-configuration?
ntp-service
ntp-service-type
tor-configuration
tor-configuration?
tor-hidden-service
tor-service
tor-service-type
bitlbee-configuration
bitlbee-configuration?
bitlbee-service
bitlbee-service-type
wicd-service-type
wicd-service
network-manager-service
connman-service
wpa-supplicant-service-type))
;;; Commentary:
;;;
;;; Networking services.
;;;
;;; Code:
(define %facebook-host-aliases
;; This is the list of known Facebook hosts to be added to /etc/hosts if you
;; are to block it.
"\
# Block Facebook IPv4.
127.0.0.1 www.facebook.com
127.0.0.1 facebook.com
127.0.0.1 login.facebook.com
127.0.0.1 www.login.facebook.com
127.0.0.1 fbcdn.net
127.0.0.1 www.fbcdn.net
127.0.0.1 fbcdn.com
127.0.0.1 www.fbcdn.com
127.0.0.1 static.ak.fbcdn.net
127.0.0.1 static.ak.connect.facebook.com
127.0.0.1 connect.facebook.net
127.0.0.1 www.connect.facebook.net
127.0.0.1 apps.facebook.com
# Block Facebook IPv6.
fe80::1%lo0 facebook.com
fe80::1%lo0 login.facebook.com
fe80::1%lo0 www.login.facebook.com
fe80::1%lo0 fbcdn.net
fe80::1%lo0 www.fbcdn.net
fe80::1%lo0 fbcdn.com
fe80::1%lo0 www.fbcdn.com
fe80::1%lo0 static.ak.fbcdn.net
fe80::1%lo0 static.ak.connect.facebook.com
fe80::1%lo0 connect.facebook.net
fe80::1%lo0 www.connect.facebook.net
fe80::1%lo0 apps.facebook.com\n")
(define-record-type* <static-networking>
static-networking make-static-networking
static-networking?
(interface static-networking-interface)
(ip static-networking-ip)
(netmask static-networking-netmask
(default #f))
(gateway static-networking-gateway)
(provision static-networking-provision)
(name-servers static-networking-name-servers))
(define static-networking-service-type
(shepherd-service-type
'static-networking
(match-lambda
(($ <static-networking> interface ip netmask gateway provision
name-servers)
(let ((loopback? (memq 'loopback provision)))
(shepherd-service
;; Unless we're providing the loopback interface, wait for udev to be up
;; and running so that INTERFACE is actually usable.
(requirement (if loopback? '() '(udev)))
(documentation
"Bring up the networking interface using a static IP address.")
(provision provision)
(start #~(lambda _
;; Return #t if successfully started.
(let* ((addr (inet-pton AF_INET #$ip))
(sockaddr (make-socket-address AF_INET addr 0))
(mask (and #$netmask
(inet-pton AF_INET #$netmask)))
(maskaddr (and mask
(make-socket-address AF_INET
mask 0)))
(gateway (and #$gateway
(inet-pton AF_INET #$gateway)))
(gatewayaddr (and gateway
(make-socket-address AF_INET
gateway 0))))
(configure-network-interface #$interface sockaddr
(logior IFF_UP
#$(if loopback?
#~IFF_LOOPBACK
0))
#:netmask maskaddr)
(when gateway
(let ((sock (socket AF_INET SOCK_DGRAM 0)))
(add-network-route/gateway sock gatewayaddr)
(close-port sock))))
#$(if (pair? name-servers)
#~(call-with-output-file "/etc/resolv.conf"
(lambda (port)
(display
"# Generated by 'static-networking-service'.\n"
port)
(for-each (lambda (server)
(format port "nameserver ~a~%"
server))
'#$name-servers)
#t))
#t)))
(stop #~(lambda _
;; Return #f is successfully stopped.
(let ((sock (socket AF_INET SOCK_STREAM 0)))
(when #$gateway
(delete-network-route sock
(make-socket-address
AF_INET INADDR_ANY 0)))
(set-network-interface-flags sock #$interface 0)
(close-port sock)
#f)))
(respawn? #f)))))))
(define* (static-networking-service interface ip
#:key
netmask gateway
(provision '(networking))
(name-servers '()))
"Return a service that starts @var{interface} with address @var{ip}. If
@var{netmask} is true, use it as the network mask. If @var{gateway} is true,
it must be a string specifying the default network gateway."
(service static-networking-service-type
(static-networking (interface interface) (ip ip)
(netmask netmask) (gateway gateway)
(provision provision)
(name-servers name-servers))))
(define dhcp-client-service-type
(shepherd-service-type
'dhcp-client
(lambda (dhcp)
(define dhclient
(file-append dhcp "/sbin/dhclient"))
(define pid-file
"/var/run/dhclient.pid")
(shepherd-service
(documentation "Set up networking via DHCP.")
(requirement '(user-processes udev))
;; XXX: Running with '-nw' ("no wait") avoids blocking for a minute when
;; networking is unavailable, but also means that the interface is not up
;; yet when 'start' completes. To wait for the interface to be ready, one
;; should instead monitor udev events.
(provision '(networking))
(start #~(lambda _
;; When invoked without any arguments, 'dhclient' discovers all
;; non-loopback interfaces *that are up*. However, the relevant
;; interfaces are typically down at this point. Thus we perform
;; our own interface discovery here.
(define valid?
(negate loopback-network-interface?))
(define ifaces
(filter valid? (all-network-interface-names)))
;; XXX: Make sure the interfaces are up so that 'dhclient' can
;; actually send/receive over them.
(for-each set-network-interface-up ifaces)
(false-if-exception (delete-file #$pid-file))
(let ((pid (fork+exec-command
(cons* #$dhclient "-nw"
"-pf" #$pid-file ifaces))))
(and (zero? (cdr (waitpid pid)))
(let loop ()
(catch 'system-error
(lambda ()
(call-with-input-file #$pid-file read))
(lambda args
;; 'dhclient' returned before PID-FILE was created,
;; so try again.
(let ((errno (system-error-errno args)))
(if (= ENOENT errno)
(begin
(sleep 1)
(loop))
(apply throw args))))))))))
(stop #~(make-kill-destructor))))))
(define* (dhcp-client-service #:key (dhcp isc-dhcp))
"Return a service that runs @var{dhcp}, a Dynamic Host Configuration
Protocol (DHCP) client, on all the non-loopback network interfaces."
(service dhcp-client-service-type dhcp))
(define %ntp-servers
;; Default set of NTP servers.
'("0.pool.ntp.org"
"1.pool.ntp.org"
"2.pool.ntp.org"))
;;;
;;; NTP.
;;;
;; TODO: Export.
(define-record-type* <ntp-configuration>
ntp-configuration make-ntp-configuration
ntp-configuration?
(ntp ntp-configuration-ntp
(default ntp))
(servers ntp-configuration-servers)
(allow-large-adjustment? ntp-allow-large-adjustment?
(default #f)))
(define ntp-shepherd-service
(match-lambda
(($ <ntp-configuration> ntp servers allow-large-adjustment?)
(let ()
;; TODO: Add authentication support.
(define config
(string-append "driftfile /var/run/ntpd/ntp.drift\n"
(string-join (map (cut string-append "server " <>)
servers)
"\n")
"
# Disable status queries as a workaround for CVE-2013-5211:
# <http://support.ntp.org/bin/view/Main/SecurityNotice#DRDoS_Amplification_Attack_using>.
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
# Yet, allow use of the local 'ntpq'.
restrict 127.0.0.1
restrict -6 ::1\n"))
(define ntpd.conf
(plain-file "ntpd.conf" config))
(list (shepherd-service
(provision '(ntpd))
(documentation "Run the Network Time Protocol (NTP) daemon.")
(requirement '(user-processes networking))
(start #~(make-forkexec-constructor
(list (string-append #$ntp "/bin/ntpd") "-n"
"-c" #$ntpd.conf "-u" "ntpd"
#$@(if allow-large-adjustment?
'("-g")
'()))))
(stop #~(make-kill-destructor))))))))
(define %ntp-accounts
(list (user-account
(name "ntpd")
(group "nogroup")
(system? #t)
(comment "NTP daemon user")
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin")))))
(define (ntp-service-activation config)
"Return the activation gexp for CONFIG."
(with-imported-modules '((guix build utils))
#~(begin
(define %user
(getpw "ntpd"))
(let ((directory "/var/run/ntpd"))
(mkdir-p directory)
(chown directory (passwd:uid %user) (passwd:gid %user))))))
(define ntp-service-type
(service-type (name 'ntp)
(extensions
(list (service-extension shepherd-root-service-type
ntp-shepherd-service)
(service-extension account-service-type
(const %ntp-accounts))
(service-extension activation-service-type
ntp-service-activation)))))
(define* (ntp-service #:key (ntp ntp)
(servers %ntp-servers)
allow-large-adjustment?)
"Return a service that runs the daemon from @var{ntp}, the
@uref{http://www.ntp.org, Network Time Protocol package}. The daemon will
keep the system clock synchronized with that of @var{servers}.
@var{allow-large-adjustment?} determines whether @command{ntpd} is allowed to
make an initial adjustment of more than 1,000 seconds."
(service ntp-service-type
(ntp-configuration (ntp ntp)
(servers servers)
(allow-large-adjustment?
allow-large-adjustment?))))
;;;
;;; Tor.
;;;
(define-record-type* <tor-configuration>
tor-configuration make-tor-configuration
tor-configuration?
(tor tor-configuration-tor
(default tor))
(config-file tor-configuration-config-file)
(hidden-services tor-configuration-hidden-services
(default '())))
(define %tor-accounts
;; User account and groups for Tor.
(list (user-group (name "tor") (system? #t))
(user-account
(name "tor")
(group "tor")
(system? #t)
(comment "Tor daemon user")
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin")))))
(define-record-type <hidden-service>
(hidden-service name mapping)
hidden-service?
(name hidden-service-name) ;string
(mapping hidden-service-mapping)) ;list of port/address tuples
(define (tor-configuration->torrc config)
"Return a 'torrc' file for CONFIG."
(match config
(($ <tor-configuration> tor config-file services)
(computed-file
"torrc"
(with-imported-modules '((guix build utils))
#~(begin
(use-modules (guix build utils)
(ice-9 match))
(call-with-output-file #$output
(lambda (port)
(display "\
# The beginning was automatically added.
User tor
DataDirectory /var/lib/tor
Log notice syslog\n" port)
(for-each (match-lambda
((service (ports hosts) ...)
(format port "\
HiddenServiceDir /var/lib/tor/hidden-services/~a~%"
service)
(for-each (lambda (tcp-port host)
(format port "\
HiddenServicePort ~a ~a~%"
tcp-port host))
ports hosts)))
'#$(map (match-lambda
(($ <hidden-service> name mapping)
(cons name mapping)))
services))
;; Append the user's config file.
(call-with-input-file #$config-file
(lambda (input)
(dump-port input port)))
#t))))))))
(define (tor-shepherd-service config)
"Return a <shepherd-service> running TOR."
(match config
(($ <tor-configuration> tor)
(let ((torrc (tor-configuration->torrc config)))
(list (shepherd-service
(provision '(tor))
;; Tor needs at least one network interface to be up, hence the
;; dependency on 'loopback'.
(requirement '(user-processes loopback syslogd))
(start #~(make-forkexec-constructor
(list (string-append #$tor "/bin/tor") "-f" #$torrc)))
(stop #~(make-kill-destructor))
(documentation "Run the Tor anonymous network overlay.")))))))
(define (tor-hidden-service-activation config)
"Return the activation gexp for SERVICES, a list of hidden services."
#~(begin
(use-modules (guix build utils))
(define %user
(getpw "tor"))
(define (initialize service)
(let ((directory (string-append "/var/lib/tor/hidden-services/"
service)))
(mkdir-p directory)
(chown directory (passwd:uid %user) (passwd:gid %user))
;; The daemon bails out if we give wider permissions.
(chmod directory #o700)))
(mkdir-p "/var/lib/tor")
(chown "/var/lib/tor" (passwd:uid %user) (passwd:gid %user))
(chmod "/var/lib/tor" #o700)
;; Make sure /var/lib is accessible to the 'tor' user.
(chmod "/var/lib" #o755)
(for-each initialize
'#$(map hidden-service-name
(tor-configuration-hidden-services config)))))
(define tor-service-type
(service-type (name 'tor)
(extensions
(list (service-extension shepherd-root-service-type
tor-shepherd-service)
(service-extension account-service-type
(const %tor-accounts))
(service-extension activation-service-type
tor-hidden-service-activation)))
;; This can be extended with hidden services.
(compose concatenate)
(extend (lambda (config services)
(tor-configuration
(inherit config)
(hidden-services
(append (tor-configuration-hidden-services config)
services)))))))
(define* (tor-service #:optional
(config-file (plain-file "empty" ""))
#:key (tor tor))
"Return a service to run the @uref{https://torproject.org, Tor} anonymous
networking daemon.
The daemon runs as the @code{tor} unprivileged user. It is passed
@var{config-file}, a file-like object, with an additional @code{User tor} line
and lines for hidden services added via @code{tor-hidden-service}. Run
@command{man tor} for information about the configuration file."
(service tor-service-type
(tor-configuration (tor tor)
(config-file config-file))))
(define tor-hidden-service-type
;; A type that extends Tor with hidden services.
(service-type (name 'tor-hidden-service)
(extensions
(list (service-extension tor-service-type list)))))
(define (tor-hidden-service name mapping)
"Define a new Tor @dfn{hidden service} called @var{name} and implementing
@var{mapping}. @var{mapping} is a list of port/host tuples, such as:
@example
'((22 \"127.0.0.1:22\")
(80 \"127.0.0.1:8080\"))
@end example
In this example, port 22 of the hidden service is mapped to local port 22, and
port 80 is mapped to local port 8080.
This creates a @file{/var/lib/tor/hidden-services/@var{name}} directory, where
the @file{hostname} file contains the @code{.onion} host name for the hidden
service.
See @uref{https://www.torproject.org/docs/tor-hidden-service.html.en, the Tor
project's documentation} for more information."
(service tor-hidden-service-type
(hidden-service name mapping)))
;;;
;;; BitlBee.
;;;
(define-record-type* <bitlbee-configuration>
bitlbee-configuration make-bitlbee-configuration
bitlbee-configuration?
(bitlbee bitlbee-configuration-bitlbee
(default bitlbee))
(interface bitlbee-configuration-interface)
(port bitlbee-configuration-port)
(extra-settings bitlbee-configuration-extra-settings))
(define bitlbee-shepherd-service
(match-lambda
(($ <bitlbee-configuration> bitlbee interface port extra-settings)
(let ((conf (plain-file "bitlbee.conf"
(string-append "
[settings]
User = bitlbee
ConfigDir = /var/lib/bitlbee
DaemonInterface = " interface "
DaemonPort = " (number->string port) "
" extra-settings))))
(list (shepherd-service
(provision '(bitlbee))
(requirement '(user-processes loopback))
(start #~(make-forkexec-constructor
(list (string-append #$bitlbee "/sbin/bitlbee")
"-n" "-F" "-u" "bitlbee" "-c" #$conf)))
(stop #~(make-kill-destructor))))))))
(define %bitlbee-accounts
;; User group and account to run BitlBee.
(list (user-group (name "bitlbee") (system? #t))
(user-account
(name "bitlbee")
(group "bitlbee")
(system? #t)
(comment "BitlBee daemon user")
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin")))))
(define %bitlbee-activation
;; Activation gexp for BitlBee.
#~(begin
(use-modules (guix build utils))
;; This directory is used to store OTR data.
(mkdir-p "/var/lib/bitlbee")
(let ((user (getpwnam "bitlbee")))
(chown "/var/lib/bitlbee"
(passwd:uid user) (passwd:gid user)))))
(define bitlbee-service-type
(service-type (name 'bitlbee)
(extensions
(list (service-extension shepherd-root-service-type
bitlbee-shepherd-service)
(service-extension account-service-type
(const %bitlbee-accounts))
(service-extension activation-service-type
(const %bitlbee-activation))))))
(define* (bitlbee-service #:key (bitlbee bitlbee)
(interface "127.0.0.1") (port 6667)
(extra-settings ""))
"Return a service that runs @url{http://bitlbee.org,BitlBee}, a daemon that
acts as a gateway between IRC and chat networks.
The daemon will listen to the interface corresponding to the IP address
specified in @var{interface}, on @var{port}. @code{127.0.0.1} means that only
local clients can connect, whereas @code{0.0.0.0} means that connections can
come from any networking interface.
In addition, @var{extra-settings} specifies a string to append to the
configuration file."
(service bitlbee-service-type
(bitlbee-configuration
(bitlbee bitlbee)
(interface interface) (port port)
(extra-settings extra-settings))))
;;;
;;; Wicd.
;;;
(define %wicd-activation
;; Activation gexp for Wicd.
#~(begin
(use-modules (guix build utils))
(mkdir-p "/etc/wicd")
(let ((file-name "/etc/wicd/dhclient.conf.template.default"))
(unless (file-exists? file-name)
(copy-file (string-append #$wicd file-name)
file-name)))))
(define (wicd-shepherd-service wicd)
"Return a shepherd service for WICD."
(list (shepherd-service
(documentation "Run the Wicd network manager.")
(provision '(networking))
(requirement '(user-processes dbus-system loopback))
(start #~(make-forkexec-constructor
(list (string-append #$wicd "/sbin/wicd")
"--no-daemon")))
(stop #~(make-kill-destructor)))))
(define wicd-service-type
(service-type (name 'wicd)
(extensions
(list (service-extension shepherd-root-service-type
wicd-shepherd-service)
(service-extension dbus-root-service-type
list)
(service-extension activation-service-type
(const %wicd-activation))
;; Add Wicd to the global profile.
(service-extension profile-service-type list)))))
(define* (wicd-service #:key (wicd wicd))
"Return a service that runs @url{https://launchpad.net/wicd,Wicd}, a network
management daemon that aims to simplify wired and wireless networking.
This service adds the @var{wicd} package to the global profile, providing
several commands to interact with the daemon and configure networking:
@command{wicd-client}, a graphical user interface, and the @command{wicd-cli}
and @command{wicd-curses} user interfaces."
(service wicd-service-type wicd))
;;;
;;; NetworkManager
;;;
(define %network-manager-activation
;; Activation gexp for NetworkManager.
#~(begin
(use-modules (guix build utils))
(mkdir-p "/etc/NetworkManager/system-connections")))
(define (network-manager-shepherd-service network-manager)
"Return a shepherd service for NETWORK-MANAGER."
(list (shepherd-service
(documentation "Run the NetworkManager.")
(provision '(networking))
(requirement '(user-processes dbus-system wpa-supplicant loopback))
(start #~(make-forkexec-constructor
(list (string-append #$network-manager
"/sbin/NetworkManager")
"--no-daemon")))
(stop #~(make-kill-destructor)))))
(define network-manager-service-type
(service-type (name 'network-manager)
(extensions
(list (service-extension shepherd-root-service-type
network-manager-shepherd-service)
(service-extension dbus-root-service-type list)
(service-extension polkit-service-type list)
(service-extension activation-service-type
(const %network-manager-activation))
;; Add network-manager to the system profile.
(service-extension profile-service-type list)))))
(define* (network-manager-service #:key (network-manager network-manager))
"Return a service that runs NetworkManager, a network connection manager
that attempting to keep active network connectivity when available."
(service network-manager-service-type network-manager))
;;;
;;; Connman
;;;
(define %connman-activation
;; Activation gexp for Connman.
#~(begin
(use-modules (guix build utils))
(mkdir-p "/var/lib/connman/")
(mkdir-p "/var/lib/connman-vpn/")))
(define (connman-shepherd-service connman)
"Return a shepherd service for Connman"
(list (shepherd-service
(documentation "Run Connman")
(provision '(networking))
(requirement '(user-processes dbus-system loopback wpa-supplicant))
(start #~(make-forkexec-constructor
(list (string-append #$connman
"/sbin/connmand")
"-n" "-r")))
(stop #~(make-kill-destructor)))))
(define connman-service-type
(service-type (name 'connman)
(extensions
(list (service-extension shepherd-root-service-type
connman-shepherd-service)
(service-extension dbus-root-service-type list)
(service-extension activation-service-type
(const %connman-activation))
;; Add connman to the system profile.
(service-extension profile-service-type list)))))
(define* (connman-service #:key (connman connman))
"Return a service that runs @url{https://01.org/connman,Connman}, a network
connection manager.
This service adds the @var{connman} package to the global profile, providing
several the @command{connmanctl} command to interact with the daemon and
configure networking."
(service connman-service-type connman))
;;;
;;; WPA supplicant
;;;
(define (wpa-supplicant-shepherd-service wpa-supplicant)
"Return a shepherd service for wpa_supplicant"
(list (shepherd-service
(documentation "Run WPA supplicant with dbus interface")
(provision '(wpa-supplicant))
(requirement '(user-processes dbus-system loopback))
(start #~(make-forkexec-constructor
(list (string-append #$wpa-supplicant
"/sbin/wpa_supplicant")
"-u" "-B" "-P/var/run/wpa_supplicant.pid")
#:pid-file "/var/run/wpa_supplicant.pid"))
(stop #~(make-kill-destructor)))))
(define wpa-supplicant-service-type
(service-type (name 'wpa-supplicant)
(extensions
(list (service-extension shepherd-root-service-type
wpa-supplicant-shepherd-service)
(service-extension dbus-root-service-type list)
(service-extension profile-service-type list)))))
;;; networking.scm ends here