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Age	Commit message (Collapse)	Author
2022-01-18	facilitate caching repository responses in content scripts	Wojtek Kosior
2022-01-14	add settings page with styling	Wojtek Kosior
2022-01-13	facilitate managing repository URLs in a list; minor other changes	Wojtek Kosior
2022-01-11	add missing payload_create test and styling	Wojtek Kosior
2022-01-10	improve item list styling; add payload creation form; exend dialog mechanism	Wojtek Kosior
2022-01-08	work on UI components	Wojtek Kosior
	This commit introduces some HTML and javascript (and tests for it) to use in constructing the new UI. This is partial work that is not yet finished.

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 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 (test-nar)
  #:use-module (guix tests)
  #:use-module (guix nar)
  #:use-module (guix serialization)
  #:use-module (guix store)
  #:use-module ((gcrypt hash)
                #:select (open-sha256-port open-sha256-input-port))
  #:use-module ((guix packages)
                #:select (base32))
  #:use-module ((guix build utils)
                #:select (find-files))
  #:use-module (rnrs bytevectors)
  #:use-module (rnrs io ports)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-11)
  #:use-module (srfi srfi-26)
  #:use-module (srfi srfi-34)
  #:use-module (srfi srfi-35)
  #:use-module (srfi srfi-64)
  #:use-module (ice-9 ftw)
  #:use-module (ice-9 regex)
  #:use-module ((ice-9 control) #:select (let/ec))
  #:use-module (ice-9 match))

;; Test the (guix nar) module.


;;;
;;; File system testing tools, initially contributed to Guile, then libchop.
;;;

(define (random-file-size)
  (define %average (* 1024 512))                  ; 512 KiB
  (define %stddev  (* 1024 64))                   ; 64 KiB
  (inexact->exact
   (max 0 (round (+ %average (* %stddev (random:normal)))))))

(define (make-file-tree dir tree)
  "Make file system TREE at DIR."
  (let loop ((dir  dir)
             (tree tree))
    (define (scope file)
      (string-append dir "/" file))

    (match tree
      (('directory name (body ...))
       (mkdir (scope name))
       (for-each (cute loop (scope name) <>) body))
      (('directory name (? integer? mode) (body ...))
       (mkdir (scope name))
       (for-each (cute loop (scope name) <>) body)
       (chmod (scope name) mode))
      ((file)
       (populate-file (scope file) (random-file-size)))
      ((file (? integer? mode))
       (populate-file (scope file) (random-file-size))
       (chmod (scope file) mode))
      ((from '-> to)
       (symlink to (scope from))))))

(define (delete-file-tree dir tree)
  "Delete file TREE from DIR."
  (let loop ((dir  dir)
             (tree tree))
    (define (scope file)
      (string-append dir "/" file))

    (match tree
      (('directory name (body ...))
       (for-each (cute loop (scope name) <>) body)
       (rmdir (scope name)))
      (('directory name (? integer? mode) (body ...))
       (chmod (scope name) #o755)          ; make sure it can be entered
       (for-each (cute loop (scope name) <>) body)
       (rmdir (scope name)))
      ((from '-> _)
       (delete-file (scope from)))
      ((file _ ...)
       (delete-file (scope file))))))

(define-syntax-rule (with-file-tree dir tree body ...)
  (dynamic-wind
    (lambda ()
      (make-file-tree dir 'tree))
    (lambda ()
      body ...)
    (lambda ()
      (delete-file-tree dir 'tree))))

(define (file-tree-equal? input output)
  "Return #t if the file trees at INPUT and OUTPUT are equal."
  (define strip
    (cute string-drop <> (string-length input)))
  (define sibling
    (compose (cut string-append output <>) strip))

  (file-system-fold (const #t)
                    (lambda (name stat result)    ; leaf
                      (and result
                           (file=? name (sibling name))))
                    (lambda (name stat result)    ; down
                      result)
                    (lambda (name stat result)    ; up
                      result)
                    (const #f)                    ; skip
                    (lambda (name stat errno result)
                      (pk 'error name stat errno)
                      #f)
                    #t                            ; result
                    input
                    lstat))

(define (populate-file file size)
  (call-with-output-file file
    (lambda (p)
      (put-bytevector p (random-bytevector size)))))

(define (rm-rf dir)
  (file-system-fold (const #t)                    ; enter?
                    (lambda (file stat result)    ; leaf
                      (delete-file file))
                    (const #t)                    ; down
                    (lambda (dir stat result)     ; up
                      (rmdir dir))
                    (const #t)                    ; skip
                    (const #t)                    ; error
                    #t
                    dir
                    lstat))

(define %test-dir
  ;; An output directory under $top_builddir.
  (string-append (dirname (search-path %load-path "pre-inst-env"))
                 "/test-nar-" (number->string (getpid))))


(test-begin "nar")

(test-assert "write-file-tree + restore-file"
  (let* ((file1  (search-path %load-path "guix.scm"))
         (file2  (search-path %load-path "guix/base32.scm"))
         (file3  "#!/bin/something")
         (output (string-append %test-dir "/output")))
    (dynamic-wind
      (lambda () #t)
      (lambda ()
        (define-values (port get-bytevector)
          (open-bytevector-output-port))
        (write-file-tree "root" port
                         #:file-type+size
                         (match-lambda
                           ("root"
                            (values 'directory 0))
                           ("root/foo"
                            (values 'regular (stat:size (stat file1))))
                           ("root/lnk"
                            (values 'symlink 0))
                           ("root/dir"
                            (values 'directory 0))
                           ("root/dir/bar"
                            (values 'regular (stat:size (stat file2))))
                           ("root/dir/exe"
                            (values 'executable (string-length file3))))
                         #:file-port
                         (match-lambda
                           ("root/foo" (open-input-file file1))
                           ("root/dir/bar" (open-input-file file2))
                           ("root/dir/exe" (open-input-string file3)))
                         #:symlink-target
                         (match-lambda
                           ("root/lnk" "foo"))
                         #:directory-entries
                         (match-lambda
                           ("root" '("foo" "dir" "lnk"))
                           ("root/dir" '("bar" "exe"))))
        (close-port port)

        (rm-rf %test-dir)
        (mkdir %test-dir)
        (restore-file (open-bytevector-input-port (get-bytevector))
                      output)
        (and (file=? (string-append output "/foo") file1)
             (string=? (readlink (string-append output "/lnk"))
                       "foo")
             (file=? (string-append output "/dir/bar") file2)
             (string=? (call-with-input-file (string-append output "/dir/exe")
                         get-string-all)
                       file3)
             (> (logand (stat:mode (lstat (string-append output "/dir/exe")))
                        #o100)
                0)
             (equal? '("." ".." "bar" "exe")
                     (scandir (string-append output "/dir")))
             (equal? '("." ".." "dir" "foo" "lnk")
                     (scandir output))))
      (lambda ()
        (false-if-exception (rm-rf %test-dir))))))

(test-equal "write-file-tree + fold-archive"
  '(("R" directory #f)
    ("R/dir" directory #f)
    ("R/dir/exe" executable "1234")
    ("R/foo" regular "abcdefg")
    ("R/lnk" symlink "foo"))

  (let ()
    (define-values (port get-bytevector)
      (open-bytevector-output-port))
    (write-file-tree "root" port
                     #:file-type+size
                     (match-lambda
                       ("root"
                        (values 'directory 0))
                       ("root/foo"
                        (values 'regular 7))
                       ("root/lnk"
                        (values 'symlink 0))
                       ("root/dir"
                        (values 'directory 0))
                       ("root/dir/exe"
                        (values 'executable 4)))
                     #:file-port
                     (match-lambda
                       ("root/foo" (open-input-string "abcdefg"))
                       ("root/dir/exe" (open-input-string "1234")))
                     #:symlink-target
                     (match-lambda
                       ("root/lnk" "foo"))
                     #:directory-entries
                     (match-lambda
                       ("root" '("foo" "dir" "lnk"))
                       ("root/dir" '("exe"))))
    (close-port port)

    (reverse
     (fold-archive (lambda (file type contents result)
                     (let ((contents (if (memq type '(regular executable))
                                         (utf8->string
                                          (get-bytevector-n (car contents)
                                                            (cdr contents)))
                                         contents)))
                       (cons `(,file ,type ,contents)
                             result)))
                   '()
                   (open-bytevector-input-port (get-bytevector))
                   "R"))))

(test-equal "write-file-tree + fold-archive, flat file"
  '(("R" regular "abcdefg"))

  (let ()
    (define-values (port get-bytevector)
      (open-bytevector-output-port))
    (write-file-tree "root" port
                     #:file-type+size
                     (match-lambda
                       ("root" (values 'regular 7)))
                     #:file-port
                     (match-lambda
                       ("root" (open-input-string "abcdefg"))))
    (close-port port)

    (reverse
     (fold-archive (lambda (file type contents result)
                     (let ((contents (utf8->string
                                      (get-bytevector-n (car contents)
                                                        (cdr contents)))))
                       (cons `(,file ,type ,contents) result)))
                   '()
                   (open-bytevector-input-port (get-bytevector))
                   "R"))))

(test-assert "write-file supports non-file output ports"
  (let ((input  (string-append (dirname (search-path %load-path "guix.scm"))
                               "/guix"))
        (output (%make-void-port "w")))
    (write-file input output)
    #t))

(test-equal "write-file puts file in C locale collation order"
  (base32 "0sfn5r63k88w9ls4hivnvscg82bqg8a0w7955l6xlk4g96jnb2z3")
  (let ((input (string-append %test-dir ".input")))
    (dynamic-wind
      (lambda ()
        (define (touch file)
          (call-with-output-file (string-append input "/" file)
            (const #t)))

        (mkdir input)
        (touch "B")
        (touch "Z")
        (touch "a")
        (symlink "B" (string-append input "/z")))
      (lambda ()
        (let-values (((port get-hash) (open-sha256-port)))
          (write-file input port)
          (close-port port)
          (get-hash)))
      (lambda ()
        (rm-rf input)))))

(test-equal "restore-file with incomplete input"
  (string-append %test-dir "/foo")
  (let ((port (open-bytevector-input-port #vu8(1 2 3))))
    (guard (c ((nar-error? c)
               (and (eq? port (nar-error-port c))
                    (nar-error-file c))))
      (restore-file port (string-append %test-dir "/foo"))
      #f)))

(test-assert "write-file + restore-file"
  (let* ((input  (string-append (dirname (search-path %load-path "guix.scm"))
                                "/guix"))
         (output %test-dir)
         (nar    (string-append output ".nar")))
    (dynamic-wind
      (lambda () #t)
      (lambda ()
        (call-with-output-file nar
          (cut write-file input <>))
        (call-with-input-file nar
          (cut restore-file <> output))
        (file-tree-equal? input output))
      (lambda ()
        (false-if-exception (delete-file nar))
        (false-if-exception (rm-rf output))))))

(test-assert "write-file + restore-file with symlinks"
  (let ((input (string-append %test-dir ".input")))
    (mkdir input)
    (dynamic-wind
      (const #t)
      (lambda ()
        (with-file-tree input
            (directory "root"
                       (("reg") ("exe" #o777) ("sym" -> "reg")))
          (let* ((output %test-dir)
                 (nar    (string-append output ".nar")))
            (dynamic-wind
              (lambda () #t)
              (lambda ()
                (call-with-output-file nar
                  (cut write-file input <>))
                (call-with-input-file nar
                  (cut restore-file <> output))
                (file-tree-equal? input output))
              (lambda ()
                (false-if-exception (delete-file nar))
                (false-if-exception (rm-rf output)))))))
      (lambda ()
        (rmdir input)))))

(test-assert "write-file #:select? + restore-file"
  (let ((input (string-append %test-dir ".input")))
    (mkdir input)
    (dynamic-wind
      (const #t)
      (lambda ()
        (with-file-tree input
            (directory "root"
                       ((directory "a" (("x") ("y") ("z")))
                        ("b") ("c") ("d" -> "b")))
          (let* ((output %test-dir)
                 (nar    (string-append output ".nar")))
            (dynamic-wind
              (lambda () #t)
              (lambda ()
                (call-with-output-file nar
                  (lambda (port)
                    (write-file input port
                                #:select?
                                (lambda (file stat)
                                  (and (not (string=? (basename file)
                                                      "a"))
                                       (not (eq? (stat:type stat)
                                                 'symlink)))))))
                (call-with-input-file nar
                  (cut restore-file <> output))

                ;; Make sure "a" and "d" have been filtered out.
                (and (not (file-exists? (string-append output "/root/a")))
                     (file=? (string-append output "/root/b")
                             (string-append input "/root/b"))
                     (file=? (string-append output "/root/c")
                             (string-append input "/root/c"))
                     (not (file-exists? (string-append output "/root/d")))))
              (lambda ()
                (false-if-exception (delete-file nar))
                (false-if-exception (rm-rf output)))))))
      (lambda ()
        (rmdir input)))))

(test-eq "restore-file with non-UTF8 locale"     ;<https://bugs.gnu.org/33603>
  'encoding-error
  (let* ((file   (search-path %load-path "guix.scm"))
         (output (string-append %test-dir "/output"))
         (locale (setlocale LC_ALL "C")))
    (dynamic-wind
      (lambda () #t)
      (lambda ()
        (define-values (port get-bytevector)
          (open-bytevector-output-port))

        (write-file-tree "root" port
                         #:file-type+size
                         (match-lambda
                           ("root"   (values 'directory 0))
                           ("root/λ" (values 'regular 0)))
                         #:file-port (const (%make-void-port "r"))
                         #:symlink-target (const #f)
                         #:directory-entries (const '("λ")))
        (close-port port)

        (mkdir %test-dir)
        (catch 'encoding-error
          (lambda ()
            ;; This show throw to 'encoding-error.
            (restore-file (open-bytevector-input-port (get-bytevector))
                          output)
            (scandir output))
          (lambda args
            'encoding-error)))
      (lambda ()
        (false-if-exception (rm-rf %test-dir))
        (setlocale LC_ALL locale)))))

(test-assert "restore-file-set (signed, valid)"
  (with-store store
    (let* ((texts (unfold (cut >= <> 10)
                          (lambda _ (random-text))
                          1+
                          0))
           (files (map (cut add-text-to-store store "text" <>) texts))
           (dump  (call-with-bytevector-output-port
                   (cut export-paths store files <>))))
      (delete-paths store files)
      (and (every (negate file-exists?) files)
           (let* ((source   (open-bytevector-input-port dump))
                  (imported (restore-file-set source)))
             (and (equal? imported files)
                  (every (lambda (file)
                           (and (file-exists? file)
                                (valid-path? store file)))
                         files)
                  (equal? texts
                          (map (lambda (file)
                                 (call-with-input-file file
                                   get-string-all))
                               files))
                  (every canonical-file? files)))))))

(test-assert "restore-file-set with directories (signed, valid)"
  ;; <https://bugs.gnu.org/33361> describes a bug whereby directories
  ;; containing files subject to deduplication were not canonicalized--i.e.,
  ;; their mtime and permissions were not reset.  Ensure that this bug is
  ;; gone.
  (with-store store
    (let* ((text1 (random-text))
           (text2 (random-text))
           (tree  `("tree" directory
                    ("a" regular (data ,text1))
                    ("b" directory
                     ("c" regular (data ,text2))
                     ("d" regular (data ,text1))))) ;duplicate
           (file  (add-file-tree-to-store store tree))
           (dump  (call-with-bytevector-output-port
                   (cute export-paths store (list file) <>))))
      (delete-paths store (list file))
      (and (not (file-exists? file))
           (let* ((source   (open-bytevector-input-port dump))
                  (imported (restore-file-set source)))
             (and (equal? imported (list file))
                  (file-exists? file)
                  (valid-path? store file)
                  (string=? text1
                            (call-with-input-file (string-append file "/a")
                              get-string-all))
                  (string=? text2
                            (call-with-input-file
                                (string-append file "/b/c")
                              get-string-all))
                  (= (stat:ino (stat (string-append file "/a"))) ;deduplication
                     (stat:ino (stat (string-append file "/b/d"))))
                  (every canonical-file?
                         (find-files file #:directories? #t))))))))

(test-assert "restore-file-set (missing signature)"
  (let/ec return
    (with-store store
      (let* ((file  (add-text-to-store store "foo" (random-text)))
             (dump  (call-with-bytevector-output-port
                     (cute export-paths store (list file) <>
                           #:sign? #f))))
        (delete-paths store (list file))
        (and (not (file-exists? file))
             (let ((source (open-bytevector-input-port dump)))
               (guard (c ((nar-signature-error? c)
                          (let ((message (condition-message c))
                                (port    (nar-error-port c)))
                            (return
                             (and (string-match "lacks.*signature" message)
                                  (string=? file (nar-error-file c))
                                  (eq? source port))))))
                 (restore-file-set source))
               #f))))))

(test-assert "restore-file-set (corrupt)"
  (let/ec return
    (with-store store
      (let* ((file  (add-text-to-store store "foo"
                                       (random-text)))
             (dump  (call-with-bytevector-output-port
                     (cute export-paths store (list file) <>))))
        (delete-paths store (list file))

        ;; Flip a byte in the file contents.
        (let* ((index 120)
               (byte  (bytevector-u8-ref dump index)))
          (bytevector-u8-set! dump index (logxor #xff byte)))

        (and (not (file-exists? file))
             (let ((source (open-bytevector-input-port dump)))
               (guard (c ((nar-invalid-hash-error? c)
                          (let ((message (condition-message c))
                                (port    (nar-error-port c)))
                            (return
                             (and (string-contains message "hash")
                                  (string=? file (nar-error-file c))
                                  (eq? source port))))))
                 (restore-file-set source))
               #f))))))

(test-end "nar")

;;; Local Variables:
;;; eval: (put 'with-file-tree 'scheme-indent-function 2)
;;; End: