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git-authenticate: Add tests.

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* guix/tests/git.scm (call-with-environment-variables)
(with-environment-variables): Remove.
* guix/tests/git.scm (populate-git-repository): Add clauses for signed
commits and signed merges.
* guix/tests/gnupg.scm: New file.
* tests/git-authenticate.scm: New file.
* tests/ed25519bis.key, tests/ed25519bis.sec: New files.
* Makefile.am (dist_noinst_DATA): Add 'guix/tests/gnupg.scm'.
(SCM_TESTS): Add 'tests/git-authenticate.scm'.
(EXTRA_DIST): Add tests/ed25519bis.{key,sec}.
This commit is contained in:
Ludovic Courtès 2020-06-01 23:20:06 +02:00
parent f8213f1bca
commit c83eedba23
No known key found for this signature in database
GPG key ID: 090B11993D9AEBB5
7 changed files with 393 additions and 19 deletions
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2
.dir-locals.el
View file

@ -96,6 +96,8 @@
(eval . (put 'call-with-progress-reporter 'scheme-indent-function 1))
(eval . (put 'with-temporary-git-repository 'scheme-indent-function 2))
(eval . (put 'with-environment-variables 'scheme-indent-function 1))
(eval . (put 'with-fresh-gnupg-setup 'scheme-indent-function 1))
;; This notably allows '(' in Paredit to not insert a space when the
;; preceding symbol is one of these.

6
Makefile.am
View file

@ -319,7 +319,8 @@ MODULES += $(STORE_MODULES)
dist_noinst_DATA = \
guix/tests.scm \
guix/tests/http.scm \
guix/tests/git.scm
guix/tests/git.scm \
guix/tests/gnupg.scm
# Auxiliary files for packages.
AUX_FILES = \
@ -404,6 +405,7 @@ SCM_TESTS = \
tests/gem.scm \
tests/gexp.scm \
tests/git.scm \
tests/git-authenticate.scm \
tests/glob.scm \
tests/gnu-maintenance.scm \
tests/grafts.scm \
@ -576,6 +578,8 @@ EXTRA_DIST += \
tests/dsa.key \
tests/ed25519.key \
tests/ed25519.sec \
tests/ed25519bis.key \
tests/ed25519bis.sec \
build-aux/config.rpath \
bootstrap \
doc/build.scm \

26
guix/tests/git.scm
View file

@ -21,6 +21,7 @@ (define-module (guix tests git)
#:use-module ((guix git) #:select (with-repository))
#:use-module (guix utils)
#:use-module (guix build utils)
#:use-module ((guix tests gnupg) #:select (with-environment-variables))
#:use-module (ice-9 match)
#:use-module (ice-9 control)
#:export (git-command
@ -30,24 +31,6 @@ (define-module (guix tests git)
(define git-command
(make-parameter "git"))
(define (call-with-environment-variables variables thunk)
"Call THUNK with the environment VARIABLES set."
(let ((environment (environ)))
(dynamic-wind
(lambda ()
(for-each (match-lambda
((variable value)
(setenv variable value)))
variables))
thunk
(lambda ()
(environ environment)))))
(define-syntax-rule (with-environment-variables variables exp ...)
"Evaluate EXP with the given environment VARIABLES set."
(call-with-environment-variables variables
(lambda () exp ...)))
(define (populate-git-repository directory directives)
"Initialize a new Git checkout and repository in DIRECTORY and apply
DIRECTIVES. Each element of DIRECTIVES is an sexp like:
@ -97,6 +80,9 @@ (define (git command . args)
((('commit text) rest ...)
(git "commit" "-m" text)
(loop rest))
((('commit text ('signer fingerprint)) rest ...)
(git "commit" "-m" text (string-append "--gpg-sign=" fingerprint))
(loop rest))
((('tag name) rest ...)
(git "tag" name)
(loop rest))
@ -108,6 +94,10 @@ (define (git command . args)
(loop rest))
((('merge branch message) rest ...)
(git "merge" branch "-m" message)
(loop rest))
((('merge branch message ('signer fingerprint)) rest ...)
(git "merge" branch "-m" message
(string-append "--gpg-sign=" fingerprint))
(loop rest)))))
(define (call-with-temporary-git-repository directives proc)

72
guix/tests/gnupg.scm Normal file
View file

@ -0,0 +1,72 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2020 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 (guix tests gnupg)
#:use-module (guix utils)
#:use-module (guix build utils)
#:use-module (ice-9 match)
#:export (gpg-command
gpgconf-command
with-fresh-gnupg-setup
with-environment-variables))
(define (call-with-environment-variables variables thunk)
"Call THUNK with the environment VARIABLES set."
(let ((environment (environ)))
(dynamic-wind
(lambda ()
(for-each (match-lambda
((variable value)
(setenv variable value)))
variables))
thunk
(lambda ()
(environ environment)))))
(define-syntax-rule (with-environment-variables variables exp ...)
"Evaluate EXP with the given environment VARIABLES set."
(call-with-environment-variables variables
(lambda () exp ...)))
(define gpg-command
(make-parameter "gpg"))
(define gpgconf-command
(make-parameter "gpgconf"))
(define (call-with-fresh-gnupg-setup imported thunk)
(call-with-temporary-directory
(lambda (home)
(with-environment-variables `(("GNUPGHOME" ,home))
(dynamic-wind
(lambda ()
(for-each (lambda (file)
(invoke (gpg-command) "--import" file))
imported))
thunk
(lambda ()
;; Terminate 'gpg-agent' & co.
(invoke (gpgconf-command) "--kill" "all")))))))
(define-syntax-rule (with-fresh-gnupg-setup imported exp ...)
"Evaluate EXP in the context of a fresh GnuPG setup where all the files
listed in IMPORTED, and only them, have been imported. This sets 'GNUPGHOME'
such that the user's real GnuPG files are left untouched. The 'gpg-agent'
process is terminated afterwards."
(call-with-fresh-gnupg-setup imported (lambda () exp ...)))

10
tests/ed25519bis.key Normal file
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@ -0,0 +1,10 @@
-----BEGIN PGP PUBLIC KEY BLOCK-----
mDMEXtVsNhYJKwYBBAHaRw8BAQdAnLsYdh3BpeK1xDguJE80XW2/MSmqeeP6pbQw
8jAw0OG0IkNoYXJsaWUgR3VpeCA8Y2hhcmxpZUBleGFtcGxlLm9yZz6IlgQTFggA
PhYhBKBDaY1jer75FlruS4IkDtyrgNqDBQJe1Ww2AhsDBQkDwmcABQsJCAcCBhUK
CQgLAgQWAgMBAh4BAheAAAoJEIIkDtyrgNqDM6cA/idDdoxo9SU+witdTXt24APH
yRzHbX9Iyh4dZNIek9JwAP9E0BwSvDHB4LY9z4RWf2hJp3dm/yZ/jEpK+w4BGN4J
Ag==
=JIU0
-----END PGP PUBLIC KEY BLOCK-----

10
tests/ed25519bis.sec Normal file
View file

@ -0,0 +1,10 @@
-----BEGIN PGP PRIVATE KEY BLOCK-----
lFgEXtVsNhYJKwYBBAHaRw8BAQdAnLsYdh3BpeK1xDguJE80XW2/MSmqeeP6pbQw
8jAw0OEAAP9lsLf3tk0OH1X4By4flYSz4PBFo40EwS4t6xx76poUphCEtCJDaGFy
bGllIEd1aXggPGNoYXJsaWVAZXhhbXBsZS5vcmc+iJYEExYIAD4WIQSgQ2mNY3q+
+RZa7kuCJA7cq4DagwUCXtVsNgIbAwUJA8JnAAULCQgHAgYVCgkICwIEFgIDAQIe
AQIXgAAKCRCCJA7cq4DagzOnAP4nQ3aMaPUlPsIrXU17duADx8kcx21/SMoeHWTS
HpPScAD/RNAcErwxweC2Pc+EVn9oSad3Zv8mf4xKSvsOARjeCQI=
=gUik
-----END PGP PRIVATE KEY BLOCK-----

286
tests/git-authenticate.scm Normal file
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@ -0,0 +1,286 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2020 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-git-authenticate)
#:use-module (git)
#:use-module (guix git)
#:use-module (guix git-authenticate)
#:use-module (guix openpgp)
#:use-module (guix tests git)
#:use-module (guix tests gnupg)
#:use-module (guix build utils)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-64)
#:use-module (rnrs bytevectors)
#:use-module (rnrs io ports))
;; Test the (guix git-authenticate) tools.
(define %ed25519-public-key-file
(search-path %load-path "tests/ed25519.key"))
(define %ed25519-secret-key-file
(search-path %load-path "tests/ed25519.sec"))
(define %ed25519bis-public-key-file
(search-path %load-path "tests/ed25519bis.key"))
(define %ed25519bis-secret-key-file
(search-path %load-path "tests/ed25519bis.sec"))
(define (read-openpgp-packet file)
(get-openpgp-packet
(open-bytevector-input-port
(call-with-input-file file read-radix-64))))
(define key-fingerprint
(compose openpgp-format-fingerprint
openpgp-public-key-fingerprint
read-openpgp-packet))
(define (key-id file)
(define id
(openpgp-public-key-id (read-openpgp-packet)))
(string-pad (number->string id 16) 16 #\0))
(define (gpg+git-available?)
(and (which (git-command))
(which (gpg-command)) (which (gpgconf-command))))
(test-begin "git-authenticate")
(unless (which (git-command)) (test-skip 1))
(test-assert "unsigned commits"
(with-temporary-git-repository directory
'((add "a.txt" "A")
(commit "first commit")
(add "b.txt" "B")
(commit "second commit"))
(with-repository directory repository
(let ((commit1 (find-commit repository "first"))
(commit2 (find-commit repository "second")))
(guard (c ((unsigned-commit-error? c)
(oid=? (git-authentication-error-commit c)
(commit-id commit1))))
(authenticate-commits repository (list commit1 commit2)
#:keyring-reference "master")
'failed)))))
(unless (gpg+git-available?) (test-skip 1))
(test-assert "signed commits, default authorizations"
(with-fresh-gnupg-setup (list %ed25519-public-key-file
%ed25519-secret-key-file)
(with-temporary-git-repository directory
`((add "signer.key" ,(call-with-input-file %ed25519-public-key-file
get-string-all))
(commit "zeroth commit")
(add "a.txt" "A")
(commit "first commit"
(signer ,(key-fingerprint %ed25519-public-key-file)))
(add "b.txt" "B")
(commit "second commit"
(signer ,(key-fingerprint %ed25519-public-key-file))))
(with-repository directory repository
(let ((commit1 (find-commit repository "first"))
(commit2 (find-commit repository "second")))
(authenticate-commits repository (list commit1 commit2)
#:default-authorizations
(list (openpgp-public-key-fingerprint
(read-openpgp-packet
%ed25519-public-key-file)))
#:keyring-reference "master"))))))
(unless (gpg+git-available?) (test-skip 1))
(test-assert "signed commits, .guix-authorizations"
(with-fresh-gnupg-setup (list %ed25519-public-key-file
%ed25519-secret-key-file)
(with-temporary-git-repository directory
`((add "signer.key" ,(call-with-input-file %ed25519-public-key-file
get-string-all))
(add ".guix-authorizations"
,(object->string
`(authorizations (version 0)
((,(key-fingerprint
%ed25519-public-key-file)
(name "Charlie"))))))
(commit "zeroth commit")
(add "a.txt" "A")
(commit "first commit"
(signer ,(key-fingerprint %ed25519-public-key-file)))
(add ".guix-authorizations"
,(object->string `(authorizations (version 0) ()))) ;empty
(commit "second commit"
(signer ,(key-fingerprint %ed25519-public-key-file)))
(add "b.txt" "B")
(commit "third commit"
(signer ,(key-fingerprint %ed25519-public-key-file))))
(with-repository directory repository
(let ((commit1 (find-commit repository "first"))
(commit2 (find-commit repository "second"))
(commit3 (find-commit repository "third")))
;; COMMIT1 and COMMIT2 are fine.
(and (authenticate-commits repository (list commit1 commit2)
#:keyring-reference "master")
;; COMMIT3 is signed by an unauthorized key according to its
;; parent's '.guix-authorizations' file.
(guard (c ((unauthorized-commit-error? c)
(and (oid=? (git-authentication-error-commit c)
(commit-id commit3))
(bytevector=?
(openpgp-public-key-fingerprint
(unauthorized-commit-error-signing-key c))
(openpgp-public-key-fingerprint
(read-openpgp-packet
%ed25519-public-key-file))))))
(authenticate-commits repository
(list commit1 commit2 commit3)
#:keyring-reference "master")
'failed)))))))
(unless (gpg+git-available?) (test-skip 1))
(test-assert "signed commits, .guix-authorizations, unauthorized merge"
(with-fresh-gnupg-setup (list %ed25519-public-key-file
%ed25519-secret-key-file
%ed25519bis-public-key-file
%ed25519bis-secret-key-file)
(with-temporary-git-repository directory
`((add "signer1.key"
,(call-with-input-file %ed25519-public-key-file
get-string-all))
(add "signer2.key"
,(call-with-input-file %ed25519bis-public-key-file
get-string-all))
(add ".guix-authorizations"
,(object->string
`(authorizations (version 0)
((,(key-fingerprint
%ed25519-public-key-file)
(name "Alice"))))))
(commit "zeroth commit")
(add "a.txt" "A")
(commit "first commit"
(signer ,(key-fingerprint %ed25519-public-key-file)))
(branch "devel")
(checkout "devel")
(add "devel/1.txt" "1")
(commit "first devel commit"
(signer ,(key-fingerprint %ed25519bis-public-key-file)))
(checkout "master")
(add "b.txt" "B")
(commit "second commit"
(signer ,(key-fingerprint %ed25519-public-key-file)))
(merge "devel" "merge"
(signer ,(key-fingerprint %ed25519-public-key-file))))
(with-repository directory repository
(let ((master1 (find-commit repository "first commit"))
(master2 (find-commit repository "second commit"))
(devel1 (find-commit repository "first devel commit"))
(merge (find-commit repository "merge")))
(define (correct? c commit)
(and (oid=? (git-authentication-error-commit c)
(commit-id commit))
(bytevector=?
(openpgp-public-key-fingerprint
(unauthorized-commit-error-signing-key c))
(openpgp-public-key-fingerprint
(read-openpgp-packet %ed25519bis-public-key-file)))))
(and (authenticate-commits repository (list master1 master2)
#:keyring-reference "master")
;; DEVEL1 is signed by an unauthorized key according to its
;; parent's '.guix-authorizations' file.
(guard (c ((unauthorized-commit-error? c)
(correct? c devel1)))
(authenticate-commits repository
(list master1 devel1)
#:keyring-reference "master")
#f)
;; MERGE is authorized but one of its ancestors is not.
(guard (c ((unauthorized-commit-error? c)
(correct? c devel1)))
(authenticate-commits repository
(list master1 master2
devel1 merge)
#:keyring-reference "master")
#f)))))))
(unless (gpg+git-available?) (test-skip 1))
(test-assert "signed commits, .guix-authorizations, authorized merge"
(with-fresh-gnupg-setup (list %ed25519-public-key-file
%ed25519-secret-key-file
%ed25519bis-public-key-file
%ed25519bis-secret-key-file)
(with-temporary-git-repository directory
`((add "signer1.key"
,(call-with-input-file %ed25519-public-key-file
get-string-all))
(add "signer2.key"
,(call-with-input-file %ed25519bis-public-key-file
get-string-all))
(add ".guix-authorizations"
,(object->string
`(authorizations (version 0)
((,(key-fingerprint
%ed25519-public-key-file)
(name "Alice"))))))
(commit "zeroth commit")
(add "a.txt" "A")
(commit "first commit"
(signer ,(key-fingerprint %ed25519-public-key-file)))
(branch "devel")
(checkout "devel")
(add ".guix-authorizations"
,(object->string ;add the second signer
`(authorizations (version 0)
((,(key-fingerprint
%ed25519-public-key-file)
(name "Alice"))
(,(key-fingerprint
%ed25519bis-public-key-file))))))
(commit "first devel commit"
(signer ,(key-fingerprint %ed25519-public-key-file)))
(add "devel/2.txt" "2")
(commit "second devel commit"
(signer ,(key-fingerprint %ed25519bis-public-key-file)))
(checkout "master")
(add "b.txt" "B")
(commit "second commit"
(signer ,(key-fingerprint %ed25519-public-key-file)))
(merge "devel" "merge"
(signer ,(key-fingerprint %ed25519-public-key-file)))
;; After the merge, the second signer is authorized.
(add "c.txt" "C")
(commit "third commit"
(signer ,(key-fingerprint %ed25519bis-public-key-file))))
(with-repository directory repository
(let ((master1 (find-commit repository "first commit"))
(master2 (find-commit repository "second commit"))
(devel1 (find-commit repository "first devel commit"))
(devel2 (find-commit repository "second devel commit"))
(merge (find-commit repository "merge"))
(master3 (find-commit repository "third commit")))
(authenticate-commits repository
(list master1 master2 devel1 devel2
merge master3)
#:keyring-reference "master"))))))
(test-end "git-authenticate")