230 lines
8.6 KiB
Scheme
230 lines
8.6 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu system shadow)
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#:use-module (guix records)
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#:use-module (guix gexp)
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#:use-module (guix store)
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#:use-module (guix monads)
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#:use-module (guix sets)
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#:use-module (guix ui)
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#:use-module ((gnu system file-systems)
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#:select (%tty-gid))
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#:use-module ((gnu packages admin)
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#:select (shadow))
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#:use-module (gnu packages bash)
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#:use-module (gnu packages guile-wm)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-34)
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#:use-module (srfi srfi-35)
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#:export (user-account
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user-account?
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user-account-name
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user-account-password
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user-account-uid
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user-account-group
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user-account-supplementary-groups
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user-account-comment
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user-account-home-directory
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user-account-shell
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user-account-system?
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user-group
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user-group?
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user-group-name
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user-group-password
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user-group-id
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user-group-system?
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default-skeletons
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skeleton-directory
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%base-groups
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%base-user-accounts
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assert-valid-users/groups))
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;;; Commentary:
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;;;
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;;; Utilities for configuring the Shadow tool suite ('login', 'passwd', etc.)
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;;;
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;;; Code:
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(define-record-type* <user-account>
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user-account make-user-account
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user-account?
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(name user-account-name)
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(password user-account-password (default #f))
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(uid user-account-uid (default #f))
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(group user-account-group) ; number | string
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(supplementary-groups user-account-supplementary-groups
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(default '())) ; list of strings
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(comment user-account-comment (default ""))
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(home-directory user-account-home-directory)
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(shell user-account-shell ; gexp
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(default #~(string-append #$bash "/bin/bash")))
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(system? user-account-system? ; Boolean
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(default #f)))
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(define-record-type* <user-group>
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user-group make-user-group
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user-group?
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(name user-group-name)
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(password user-group-password (default #f))
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(id user-group-id (default #f))
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(system? user-group-system? ; Boolean
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(default #f)))
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(define %base-groups
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;; Default set of groups.
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(let-syntax ((system-group (syntax-rules ()
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((_ args ...)
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(user-group (system? #t) args ...)))))
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(list (system-group (name "root") (id 0))
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(system-group (name "wheel")) ; root-like users
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(system-group (name "users")) ; normal users
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(system-group (name "nogroup")) ; for daemons etc.
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;; The following groups are conventionally used by things like udev to
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;; control access to hardware devices.
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(system-group (name "tty") (id %tty-gid))
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(system-group (name "dialout"))
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(system-group (name "kmem"))
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(system-group (name "input")) ; input devices, from udev
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(system-group (name "video"))
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(system-group (name "audio"))
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(system-group (name "netdev")) ; used in avahi-dbus.conf
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(system-group (name "lp"))
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(system-group (name "disk"))
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(system-group (name "floppy"))
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(system-group (name "cdrom"))
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(system-group (name "tape"))
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(system-group (name "kvm"))))) ; for /dev/kvm
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(define %base-user-accounts
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;; List of standard user accounts. Note that "root" is a special case, so
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;; it's not listed here.
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(list (user-account
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(name "nobody")
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(uid 65534)
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(group "nogroup")
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(home-directory "/var/empty")
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(system? #t))))
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(define (default-skeletons)
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"Return the default skeleton files for /etc/skel. These files are copied by
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'useradd' in the home directory of newly created user accounts."
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(define copy-guile-wm
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#~(begin
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(use-modules (guix build utils))
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(copy-file (car (find-files #$guile-wm "wm-init-sample.scm"))
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#$output)))
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(mlet %store-monad ((profile (text-file "bash_profile" "\
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# Honor per-interactive-shell startup file
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if [ -f ~/.bashrc ]; then . ~/.bashrc; fi\n"))
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(bashrc (text-file "bashrc" "\
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# Bash initialization for interactive non-login shells and
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# for remote shells (info \"(bash) Bash Startup Files\").
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# Export 'SHELL' to child processes. Programs such as 'screen'
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# honor it and otherwise use /bin/sh.
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export SHELL
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if [ -n \"$SSH_CLIENT\" -a -z \"`type -P cat`\" ]
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then
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# We are being invoked from a non-interactive SSH session
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# (as in \"ssh host command\") but 'cat' cannot be found
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# in $PATH. Source /etc/profile so we get $PATH and other
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# essential variables.
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source /etc/profile
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fi
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# Adjust the prompt depending on whether we're in 'guix environment'.
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if [ -n \"$GUIX_ENVIRONMENT\" ]
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then
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export PS1='\\u@\\h \\w [env]\\$ '
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else
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export PS1='\\u@\\h \\w\\$ '
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fi
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alias ls='ls -p --color'
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alias ll='ls -l'\n"))
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(zlogin (text-file "zlogin" "\
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# Honor system-wide environment variables
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source /etc/profile\n"))
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(guile-wm (gexp->derivation "guile-wm" copy-guile-wm
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#:modules
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'((guix build utils))))
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(xdefaults (text-file "Xdefaults" "\
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XTerm*utf8: always
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XTerm*metaSendsEscape: true\n"))
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(gdbinit (text-file "gdbinit" "\
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# Tell GDB where to look for separate debugging files.
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set debug-file-directory ~/.guix-profile/lib/debug\n")))
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(return `((".bash_profile" ,profile)
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(".bashrc" ,bashrc)
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(".zlogin" ,zlogin)
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(".Xdefaults" ,xdefaults)
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(".guile-wm" ,guile-wm)
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(".gdbinit" ,gdbinit)))))
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(define (skeleton-directory skeletons)
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"Return a directory containing SKELETONS, a list of name/derivation pairs."
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(gexp->derivation "skel"
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#~(begin
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(use-modules (ice-9 match))
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(mkdir #$output)
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(chdir #$output)
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;; Note: copy the skeletons instead of symlinking
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;; them like 'file-union' does, because 'useradd'
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;; would just copy the symlinks as is.
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(for-each (match-lambda
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((target source)
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(copy-file source target)))
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'#$skeletons)
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#t)))
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(define (assert-valid-users/groups users groups)
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"Raise an error if USERS refer to groups not listed in GROUPS."
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(let ((groups (list->set (map user-group-name groups))))
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(define (validate-supplementary-group user group)
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(unless (set-contains? groups group)
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(raise (condition
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(&message
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(message
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(format #f (_ "supplementary group '~a' \
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of user '~a' is undeclared")
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group
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(user-account-name user))))))))
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(for-each (lambda (user)
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(unless (set-contains? groups (user-account-group user))
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(raise (condition
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(&message
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(message
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(format #f (_ "primary group '~a' \
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of user '~a' is undeclared")
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(user-account-group user)
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(user-account-name user)))))))
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(for-each (cut validate-supplementary-group user <>)
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(user-account-supplementary-groups user)))
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users)))
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;;; shadow.scm ends here
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