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-rw-r--r--gnu/installer/final.scm90
1 files changed, 86 insertions, 4 deletions
diff --git a/gnu/installer/final.scm b/gnu/installer/final.scm
index e1c62f5ce0..855b640030 100644
--- a/gnu/installer/final.scm
+++ b/gnu/installer/final.scm
@@ -1,5 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
+;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -20,17 +21,98 @@
#:use-module (gnu installer newt page)
#:use-module (gnu installer steps)
#:use-module (gnu installer utils)
+ #:use-module (gnu installer user)
#:use-module (gnu services herd)
#:use-module (guix build utils)
+ #:use-module (gnu build accounts)
+ #:use-module ((gnu system shadow) #:prefix sys:)
+ #:use-module (rnrs io ports)
#:export (install-system))
-(define (install-system)
- "Start COW-STORE service on target directory and launch guix install command
-in a subshell."
+(define %seed
+ (seed->random-state
+ (logxor (getpid) (car (gettimeofday)))))
+
+(define (integer->alphanumeric-char n)
+ "Map N, an integer in the [0..62] range, to an alphanumeric character."
+ (cond ((< n 10)
+ (integer->char (+ (char->integer #\0) n)))
+ ((< n 36)
+ (integer->char (+ (char->integer #\A) (- n 10))))
+ ((< n 62)
+ (integer->char (+ (char->integer #\a) (- n 36))))
+ (else
+ (error "integer out of bounds" n))))
+
+(define (random-string len)
+ "Compute a random string of size LEN where each character is alphanumeric."
+ (let loop ((chars '())
+ (len len))
+ (if (zero? len)
+ (list->string chars)
+ (let ((n (random 62 %seed)))
+ (loop (cons (integer->alphanumeric-char n) chars)
+ (- len 1))))))
+
+(define (create-user-database users root)
+ "Create /etc/passwd, /etc/shadow, and /etc/group under ROOT for the given
+USERS."
+ (define etc
+ (string-append root "/etc"))
+
+ (define (salt)
+ ;; "$6" gives us a SHA512 password hash; the random string must be taken
+ ;; from the './0-9A-Za-z' alphabet (info "(libc) Passphrase Storage").
+ (string-append "$6$" (random-string 10)))
+
+ (define users*
+ (map (lambda (user)
+ (define root?
+ (string=? "root" (user-name user)))
+
+ (sys:user-account (name (user-name user))
+ (comment (user-real-name user))
+ (group "users")
+ (uid (if root? 0 #f))
+ (home-directory
+ (user-home-directory user))
+ (password (crypt (user-password user)
+ (salt)))
+
+ ;; We need a string here, not a file-like, hence
+ ;; this choice.
+ (shell
+ "/run/current-system/profile/bin/bash")))
+ users))
+
+ (define-values (group password shadow)
+ (user+group-databases users* sys:%base-groups
+ #:current-passwd '()
+ #:current-groups '()
+ #:current-shadow '()))
+
+ (mkdir-p etc)
+ (write-group group (string-append etc "/group"))
+ (write-passwd password (string-append etc "/passwd"))
+ (write-shadow shadow (string-append etc "/shadow")))
+
+(define* (install-system locale #:key (users '()))
+ "Create /etc/shadow and /etc/passwd on the installation target for USERS.
+Start COW-STORE service on target directory and launch guix install command in
+a subshell. LOCALE must be the locale name under which that command will run,
+or #f. Return #t on success and #f on failure."
(let ((install-command
(format #f "guix system init ~a ~a"
(%installer-configuration-file)
(%installer-target-dir))))
(mkdir-p (%installer-target-dir))
+
+ ;; We want to initialize user passwords but we don't want to store them in
+ ;; the config file since the password hashes would end up world-readable
+ ;; in the store. Thus, create /etc/shadow & co. here such that, on the
+ ;; first boot, the activation snippet that creates accounts will reuse the
+ ;; passwords that we've put in there.
+ (create-user-database users (%installer-target-dir))
+
(start-service 'cow-store (list (%installer-target-dir)))
- (false-if-exception (run-shell-command install-command))))
+ (run-shell-command install-command #:locale locale)))