diff options
| -rw-r--r-- | doc/guix.texi | 93 | ||||
| -rw-r--r-- | gnu/home/services/gnupg.scm | 150 | ||||
| -rw-r--r-- | gnu/local.mk | 1 |
3 files changed, 240 insertions, 4 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index c0bd28fdae..ed42488882 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -41869,11 +41869,12 @@ services)}. * Power Management: Power Management Home Services. Services for battery power. * Shepherd: Shepherd Home Service. Managing User's Daemons. * SSH: Secure Shell. Setting up the secure shell client. +* GPG: GNU Privacy Guard. Setting up GPG and related tools. * Desktop: Desktop Home Services. Services for graphical environments. * Guix: Guix Home Services. Services for Guix. * Fonts: Fonts Home Services. Services for managing User's fonts. * Sound: Sound Home Services. Dealing with audio. -* Messaging: Messaging Home Services. Services for managing messaging. +* Messaging: Messaging Home Services. Services for managing messaging. * Media: Media Home Services. Services for managing media. @end menu @c In addition to that Home Services can provide @@ -42639,15 +42640,18 @@ The @uref{https://www.openssh.com, OpenSSH package} includes a daemon, the @command{ssh-agent} command, that manages keys to connect to remote machines using the @acronym{SSH, secure shell} protocol. With the @code{(gnu home services ssh-agent)} service, you can configure the -OpenSSH ssh-agent to run upon login. +OpenSSH ssh-agent to run upon login. @xref{GNU Privacy Guard, +@code{home-gpg-agent-service-type}}, for an alternative to OpenSSH's +@command{ssh-agent}. + Here is an example of a service and its configuration that you could add to the @code{services} field of your @code{home-environment}: @lisp (service home-ssh-agent-service-type - (home-ssh-agent-configuration - (extra-options '("-t" "1h30m")))) + (home-ssh-agent-configuration + (extra-options '("-t" "1h30m")))) @end lisp @defvar home-ssh-agent-service-type @@ -42672,6 +42676,87 @@ Extra options will be passed to @command{ssh-agent}, please run @end table @end deftp +@node GNU Privacy Guard +@subsection GNU Privacy Guard + +@cindex GNU Privacy Guard, Home service +@cindex GPG, Home service +The @code{(gnu home services gnupg)} modules provides services that help +you set up the GNU Privacy Guard, also known as GnuPG or GPG, in your +home environment. + +@cindex gpg-agent, Home service +@cindex SSH agent, with gpg-agent +The @code{gpg-agent} service configures and sets up GPG's agent, the +program that is responsible for managing OpenPGP private keys and, +optionally, OpenSSH (secure shell) private keys (@pxref{Invoking +GPG-AGENT,,, gnupg, Using the GNU Privacy Guard}). + +As an example, here is how you would configure @code{gpg-agent} with SSH +support such that it uses the Emacs-based Pinentry interface when +prompting for a passphrase: + +@lisp +(service home-gpg-agent-service-type + (home-gpg-agent-configuration + (pinentry-program + (file-append pinentry-emacs "/bin/pinentry-emacs")) + (ssh-support? #t))) +@end lisp + +The service reference is given below. + +@defvar home-gpg-agent-service-type +This is the service type for @command{gpg-agent} (@pxref{Invoking +GPG-AGENT,,, gnupg, Using the GNU Privacy Guard}). Its value must be a +@code{home-gpg-agent-configuration}, as shown below. +@end defvar + +@c %start of fragment + +@deftp {Data Type} home-gpg-agent-configuration +Available @code{home-gpg-agent-configuration} fields are: + +@table @asis +@item @code{gnupg} (default: @code{gnupg}) (type: file-like) +The GnuPG package to use. + +@item @code{pinentry-program} (type: file-like) +Pinentry program to use. Pinentry is a small user interface that +@command{gpg-agent} delegates to anytime it needs user input for a +passphrase or @acronym{PIN,personal identification number} +(@pxref{Top,,, pinentry,Using the PIN-Entry}). + +@item @code{ssh-support?} (default: @code{#f}) (type: boolean) +Whether to enable @acronym{SSH,secure shell} support. When true, +@command{gpg-agent} acts as a drop-in replacement for OpenSSH's +@command{ssh-agent} program, taking care of OpenSSH secret keys and +directing passphrase requests to the chosen Pinentry program. + +@item @code{default-cache-ttl} (default: @code{600}) (type: integer) +Time a cache entry is valid, in seconds. + +@item @code{max-cache-ttl} (default: @code{7200}) (type: integer) +Maximum time a cache entry is valid, in seconds. After this time a +cache entry will be expired even if it has been accessed recently. + +@item @code{default-cache-ttl-ssh} (default: @code{1800}) (type: integer) +Time a cache entry for SSH keys is valid, in seconds. + +@item @code{max-cache-ttl-ssh} (default: @code{7200}) (type: integer) +Maximum time a cache entry for SSH keys is valid, in seconds. + +@item @code{extra-content} (default: @code{""}) (type: raw-configuration-string) +Raw content to add to the end of @file{~/.gnupg/gpg-agent.conf}. + +@end table + +@end deftp + + +@c %end of fragment + + @node Desktop Home Services @subsection Desktop Home Services diff --git a/gnu/home/services/gnupg.scm b/gnu/home/services/gnupg.scm new file mode 100644 index 0000000000..7e9e02a3cc --- /dev/null +++ b/gnu/home/services/gnupg.scm @@ -0,0 +1,150 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2023 Ludovic Courtès <ludo@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 home services gnupg) + #:use-module (guix gexp) + #:use-module ((guix records) #:select (match-record)) + #:use-module (gnu services) + #:use-module (gnu services configuration) + #:use-module (gnu home services) + #:use-module (gnu home services shepherd) + #:autoload (gnu packages gnupg) (gnupg pinentry) + #:export (home-gpg-agent-configuration + home-gpg-agent-configuration? + home-gpg-agent-configuration-gnupg + home-gpg-agent-configuration-pinentry-program + home-gpg-agent-configuration-ssh-support? + home-gpg-agent-configuration-default-cache-ttl + home-gpg-agent-configuration-max-cache-ttl + home-gpg-agent-configuration-max-cache-ttl-ssh + home-gpg-agent-configuration-extra-content + + home-gpg-agent-service-type)) + +(define raw-configuration-string? string?) + +;; Configuration of 'gpg-agent'. +(define-configuration/no-serialization home-gpg-agent-configuration + (gnupg + (file-like gnupg) + "The GnuPG package to use.") + (pinentry-program + (file-like (file-append pinentry "/bin/pinentry-curses")) + "Pinentry program to use. Pinentry is a small user interface that +@command{gpg-agent} delegates to anytime it needs user input for a passphrase +or @acronym{PIN, personal identification number} (@pxref{Top,,, pinentry, +Using the PIN-Entry}).") + (ssh-support? + (boolean #f) + "Whether to enable @acronym{SSH, secure shell} support. When true, +@command{gpg-agent} acts as a drop-in replacement for OpenSSH's +@command{ssh-agent} program, taking care of OpenSSH secret keys and directing +passphrase requests to the chosen Pinentry program.") + (default-cache-ttl + (integer 600) + "Time a cache entry is valid, in seconds.") + (max-cache-ttl + (integer 7200) + "Maximum time a cache entry is valid, in seconds. After this time a cache +entry will be expired even if it has been accessed recently.") + (default-cache-ttl-ssh + (integer 1800) + "Time a cache entry for SSH keys is valid, in seconds.") + (max-cache-ttl-ssh + (integer 7200) + "Maximum time a cache entry for SSH keys is valid, in seconds.") + (extra-content + (raw-configuration-string "") + "Raw content to add to the end of @file{~/.gnupg/gpg-agent.conf}.")) + +(define (home-gpg-agent-configuration-file config) + "Return the @file{gpg-agent.conf} file for @var{config}." + (match-record config <home-gpg-agent-configuration> + (pinentry-program default-cache-ttl max-cache-ttl + default-cache-ttl-ssh max-cache-ttl-ssh + extra-content) + (mixed-text-file "gpg-agent.conf" + "pinentry-program " pinentry-program "\n" + "default-cache-ttl " + (number->string default-cache-ttl) "\n" + "max-cache-ttl " + (number->string max-cache-ttl) "\n" + "default-cache-ttl-ssh " + (number->string default-cache-ttl-ssh) "\n" + "max-cache-ttl-ssh " + (number->string max-cache-ttl-ssh) "\n" + extra-content))) + +(define (home-gpg-agent-shepherd-services config) + "Return the possibly-empty list of Shepherd services for @var{config}." + (match-record config <home-gpg-agent-configuration> + (gnupg ssh-support?) + ;; 'gpg-agent' is started on demand by GnuPG's programs, but it has to be + ;; started explicitly when OpenSSH support is enabled (info "(gnupg) Agent + ;; Options"). + (if ssh-support? + (let ((endpoint (lambda (name socket) + #~(endpoint + (make-socket-address + AF_UNIX + (string-append %user-runtime-dir + "/gnupg/" #$socket)) + #:name #$name + #:socket-directory-permissions #o700)))) + (list (shepherd-service + (provision '(gpg-agent ssh-agent)) + (modules '((shepherd support))) ;for '%user-runtime-dir' + (start #~(make-systemd-constructor + (list #$(file-append gnupg "/bin/gpg-agent") + "--supervised" "--enable-ssh-support") + (list #$(endpoint "ssh" "S.gpg-agent.ssh") + #$(endpoint "browser" "S.gpg-agent.browser") + #$(endpoint "extra" "S.gpg-agent.extra") + ;; #$(endpoint "scdaemon" "S.scdaemon") + #$(endpoint "std" "S.gpg-agent")))) + (stop #~(make-systemd-destructor)) + (documentation "Start 'gpg-agent', the GnuPG passphrase +agent, with support for handling OpenSSH material.")))) + '()))) + +(define (home-gpg-agent-files config) + `((".gnupg/gpg-agent.conf" ,(home-gpg-agent-configuration-file config)))) + +(define (home-gpg-agent-environment-variables config) + "Return GnuPG environment variables needed for @var{config}." + (if (home-gpg-agent-configuration-ssh-support? config) + `(("SSH_AUTH_SOCK" + . "$XDG_RUNTIME_DIR/gnupg/S.gpg-agent.ssh")) + '())) + +(define home-gpg-agent-service-type + (service-type + (name 'home-gpg-agent) + (extensions + (list (service-extension home-files-service-type + home-gpg-agent-files) + (service-extension home-shepherd-service-type + home-gpg-agent-shepherd-services) + (service-extension home-environment-variables-service-type + home-gpg-agent-environment-variables))) + (default-value (home-gpg-agent-configuration)) + (description + "Configure GnuPG's agent, @command{gpg-agent}, which is responsible for +managing OpenPGP and optionally SSH private keys. When SSH support is +enabled, @command{gpg-agent} acts as a drop-in replacement for OpenSSH's +@command{ssh-agent}."))) diff --git a/gnu/local.mk b/gnu/local.mk index b7e19b6bc2..f0a228f19f 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -91,6 +91,7 @@ GNU_SYSTEM_MODULES = \ %D%/home/services/desktop.scm \ %D%/home/services/symlink-manager.scm \ %D%/home/services/fontutils.scm \ + %D%/home/services/gnupg.scm \ %D%/home/services/guix.scm \ %D%/home/services/media.scm \ %D%/home/services/messaging.scm \ |