mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-29 07:42:23 -05:00
896a51258a
That way, per-connection transient services such as 'sshd-123' inherit
dependencies of their "parent" ('sshd' in this example), which is more
consistent than not depending on anything.
* gnu/services/dict.scm (dicod-shepherd-service): Pass #:requirements to
'make-inetd-constructor'.
* gnu/services/messaging.scm (bitlbee-shepherd-service): Likewise.
* gnu/services/ssh.scm (openssh-shepherd-service): Likewise.
* gnu/services/vnc.scm (xvnc-shepherd-service): Likewise.
251 lines
9.4 KiB
Scheme
251 lines
9.4 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
|
;;; Copyright © 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com>
|
|
;;;
|
|
;;; 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 vnc)
|
|
#:use-module (gnu packages admin)
|
|
#:use-module (gnu packages vnc)
|
|
#:use-module ((gnu services) #:hide (delete))
|
|
#:use-module (gnu system shadow)
|
|
#:use-module (gnu services configuration)
|
|
#:use-module (gnu services shepherd)
|
|
#:use-module (guix gexp)
|
|
#:use-module (guix records)
|
|
|
|
#:export (xvnc-configuration
|
|
xvnc-configuration-xvnc
|
|
xvnc-configuration-display-number
|
|
xvnc-configuration-geometry
|
|
xvnc-configuration-depth
|
|
xvnc-configuration-port
|
|
xvnc-configuration-ipv4?
|
|
xvnc-configuration-ipv6?
|
|
xvnc-configuration-password-file
|
|
xvnc-configuration-xdmcp?
|
|
xvnc-configuration-inetd?
|
|
xvnc-configuration-frame-rate
|
|
xvnc-configuration-security-types
|
|
xvnc-configuration-localhost?
|
|
xvnc-configuration-log-level
|
|
xvnc-configuration-extra-options
|
|
|
|
xvnc-service-type))
|
|
|
|
;;;
|
|
;;; Xvnc.
|
|
;;;
|
|
|
|
(define (color-depth? x)
|
|
(member x '(16 24 32)))
|
|
|
|
(define (port? x)
|
|
(and (number? x)
|
|
(and (>= x 0) (<= x 65535))))
|
|
|
|
(define-maybe/no-serialization port)
|
|
|
|
(define-maybe/no-serialization string)
|
|
|
|
(define %security-types '("None" "VncAuth" "Plain" "TLSNone" "TLSVnc" "TLSPlain"
|
|
"X509None" "X509Vnc"))
|
|
|
|
(define (security-type? x)
|
|
(member x %security-types))
|
|
|
|
(define (security-types? x)
|
|
(and (list? x)
|
|
(and-map security-type? x)))
|
|
|
|
(define (log-level? x)
|
|
(and (number? x)
|
|
(and (>= x 0) (<= x 100))))
|
|
|
|
(define (strings? x)
|
|
(and (list? x)
|
|
(and-map string? x)))
|
|
|
|
(define-configuration/no-serialization xvnc-configuration
|
|
(xvnc
|
|
(file-like tigervnc-server)
|
|
"The package that provides the Xvnc binary.")
|
|
(display-number
|
|
(number 0)
|
|
"The display number used by Xvnc. You should set this to a number not
|
|
already used by a Xorg server. When remoting a complete desktop session via
|
|
XDMCP and using a compatible VNC viewer as provided by the
|
|
@code{tigervnc-client} or @code{turbovnc} packages, the geometry is
|
|
automatically adjusted.")
|
|
(geometry
|
|
(string "1024x768")
|
|
"The size of the desktop to be created.")
|
|
(depth
|
|
(color-depth 24)
|
|
"The pixel depth in bits of the desktop to be created. Accepted values are
|
|
16, 24 or 32.")
|
|
(port
|
|
maybe-port
|
|
"The port on which to listen for connections from viewers. When left
|
|
unspecified, it defaults to 5900 plus the display number.")
|
|
(ipv4?
|
|
(boolean #t)
|
|
"Use IPv4 for incoming and outgoing connections.")
|
|
(ipv6?
|
|
(boolean #t)
|
|
"Use IPv6 for incoming and outgoing connections.")
|
|
(password-file
|
|
maybe-string
|
|
"The password file to use, if any. Refer to vncpasswd(1) to learn how to
|
|
generate such a file.")
|
|
(xdmcp?
|
|
(boolean #f)
|
|
"Query the XDMCP server for a session. This enables users to log in a
|
|
desktop session from the login manager screen. For a multiple users scenario,
|
|
you'll want to enable the @code{inetd?} option as well, so that each
|
|
connection to the VNC server is handled separately rather than shared.")
|
|
(inetd?
|
|
(boolean #f)
|
|
"Use an Inetd-style service, which runs the Xvnc server on demand.")
|
|
(frame-rate
|
|
(number 60)
|
|
"The maximum number of updates per second sent to each client.")
|
|
(security-types
|
|
(security-types (list "None"))
|
|
(format #f "The allowed security schemes to use for incoming connections.
|
|
The default is \"None\", which is safe given that Xvnc is configured to
|
|
authenticate the user via the display manager, and only for local connections.
|
|
Accepted values are any of the following: ~s" %security-types))
|
|
(localhost?
|
|
(boolean #t)
|
|
"Only allow connections from the same machine. It is set to @code{#true}
|
|
by default for security, which means SSH or another secure means should be
|
|
used to expose the remote port.")
|
|
(log-level
|
|
(log-level 30)
|
|
"The log level, a number between 0 and 100, 100 meaning most verbose
|
|
output. The log messages are output to syslog.")
|
|
(extra-options
|
|
(strings '())
|
|
"This can be used to provide extra Xvnc options not exposed via this
|
|
<xvnc-configuration> record."))
|
|
|
|
(define (xvnc-configuration->command-line-arguments config)
|
|
"Derive the command line arguments to used to launch the Xvnc daemon from
|
|
CONFIG, a <xvnc-configuration> object."
|
|
(match-record config <xvnc-configuration>
|
|
(xvnc display-number geometry depth port ipv4? ipv6? password-file xdmcp?
|
|
inetd? frame-rate security-types localhost? log-level extra-options)
|
|
#~(list #$(file-append xvnc "/bin/Xvnc")
|
|
#$(format #f ":~a" display-number)
|
|
"-geometry" #$geometry
|
|
"-depth" #$(number->string depth)
|
|
#$@(if inetd?
|
|
(list "-inetd")
|
|
'())
|
|
#$@(if (not inetd?)
|
|
(if (maybe-value-set? port)
|
|
(list "-rfbport" (number->string port))
|
|
'())
|
|
'())
|
|
#$@(if (not inetd?)
|
|
(if ipv4?
|
|
(list "-UseIPv4")
|
|
'())
|
|
'())
|
|
#$@(if (not inetd?)
|
|
(if ipv6?
|
|
(list "-UseIPv6")
|
|
'())
|
|
'())
|
|
#$@(if (maybe-value-set? password-file)
|
|
(list "-PasswordFile" password-file)
|
|
'())
|
|
"-FrameRate" #$(number->string frame-rate)
|
|
"-SecurityTypes" #$(string-join security-types ",")
|
|
#$@(if localhost?
|
|
(list "-localhost")
|
|
'())
|
|
"-Log" #$(format #f "*:syslog:~a" log-level)
|
|
#$@(if xdmcp?
|
|
(list "-query" "localhost" "-once")
|
|
'())
|
|
#$@extra-options)))
|
|
|
|
(define %xvnc-accounts
|
|
(list (user-group
|
|
(name "xvnc")
|
|
(system? #t))
|
|
(user-account
|
|
(name "xvnc")
|
|
(group "xvnc")
|
|
(system? #t)
|
|
(comment "User for Xvnc server")
|
|
(home-directory "/var/empty")
|
|
(shell (file-append shadow "/sbin/nologin")))))
|
|
|
|
(define (xvnc-shepherd-service config)
|
|
"Return a <shepherd-service> for Xvnc with CONFIG."
|
|
(let* ((display-number (xvnc-configuration-display-number config))
|
|
(port (if (maybe-value-set? (xvnc-configuration-port config))
|
|
(xvnc-configuration-port config)
|
|
#f))
|
|
(port* (or port (+ 5900 display-number))))
|
|
(shepherd-service
|
|
(provision '(xvnc vncserver))
|
|
(documentation "Run the Xvnc server.")
|
|
(requirement '(networking syslogd))
|
|
(start (if (xvnc-configuration-inetd? config)
|
|
#~(let* ((inaddr (if #$(xvnc-configuration-localhost? config)
|
|
INADDR_LOOPBACK
|
|
INADDR_ANY))
|
|
(in6addr (if #$(xvnc-configuration-localhost? config)
|
|
IN6ADDR_LOOPBACK
|
|
IN6ADDR_ANY))
|
|
(ipv4-socket (and #$(xvnc-configuration-ipv4? config)
|
|
(make-socket-address AF_INET inaddr
|
|
#$port*)))
|
|
(ipv6-socket (and #$(xvnc-configuration-ipv6? config)
|
|
(make-socket-address AF_INET6 in6addr
|
|
#$port*))))
|
|
(make-inetd-constructor
|
|
#$(xvnc-configuration->command-line-arguments config)
|
|
`(,@(if ipv4-socket
|
|
(list (endpoint ipv4-socket))
|
|
'())
|
|
,@(if ipv6-socket
|
|
(list (endpoint ipv6-socket))
|
|
'()))
|
|
#:requirements '#$requirement
|
|
#:user "xvnc"
|
|
#:group "xvnc"))
|
|
#~(make-forkexec-constructor
|
|
#$(xvnc-configuration->command-line-arguments config)
|
|
#:user "xvnc"
|
|
#:group "xvnc")))
|
|
(stop #~(make-inetd-destructor)))))
|
|
|
|
(define xvnc-service-type
|
|
(service-type
|
|
(name 'xvnc)
|
|
(default-value (xvnc-configuration))
|
|
(description "Run the Xvnc server, which creates a virtual X11 session and
|
|
allow remote clients connecting to it via the remote framebuffer (RFB)
|
|
protocol.")
|
|
(extensions (list (service-extension
|
|
shepherd-root-service-type
|
|
(compose list xvnc-shepherd-service))
|
|
(service-extension account-service-type
|
|
(const %xvnc-accounts))))))
|