daemon: Implement signed archive import/export.

* guix/scripts/authenticate.scm, nix/scripts/guix-authenticate.in,
  tests/signing-key.pub, tests/signing-key.sec: New files.
* po/POTFILES.in: Add 'guix/scripts/authenticate.scm'.
* guix/store.scm (dump-port): New procedure.
  (process-stderr): Add 'user-port' optional parameter.  Handle
  the %STDERR-WRITE and %STDERR-READ cases as expected.
  (import-paths, export-path, export-paths): New procedures.
* tests/store.scm ("export/import several paths", "import corrupt
  path"): New tests.
* Makefile.am (MODULES): Add 'guix/scripts/authenticate.scm'.
  (EXTRA_DIST): Add 'tests/signing-key.{pub,sec}'.
* daemon.am (libstore_a_CPPFLAGS)[-DNIX_CONF_DIR]: Change 'NIX_CONF_DIR'
  to .../guix.  Change 'OPENSSL_PATH' to 'guix-authenticate'.
* config-daemon.ac: Instantiate 'nix/scripts/guix-authenticate'.
* nix/nix-daemon/guix-daemon.cc (main): Augment $PATH to include
  'settings.nixLibexecDir'.
* test-env.in: Export 'NIX_CONF_DIR' and 'NIX_LIBEXEC_DIR'.  Populate
  $NIX_CONF_DIR.

1 files changed, 45 insertions, 0 deletions

diff --git a/tests/store.scm b/tests/store.scm
index 281b923c28..6834ebc5e9 100644
--- a/tests/store.scm
+++ b/tests/store.scm
@@ -28,10 +28,12 @@
   #:use-module (gnu packages)
   #:use-module (gnu packages bootstrap)
   #:use-module (ice-9 match)
+  #:use-module (rnrs bytevectors)
   #:use-module (rnrs io ports)
   #:use-module (web uri)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-11)
+  #:use-module (srfi srfi-26)
   #:use-module (srfi srfi-34)
   #:use-module (srfi srfi-64))
 
@@ -344,6 +346,49 @@ Deriver: ~a~%"
            (build-derivations s (list d))
            #f))))
 
+(test-assert "export/import several paths"
+  (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 (import-paths %store source)))
+           (and (equal? imported files)
+                (every file-exists? files)
+                (equal? texts
+                        (map (lambda (file)
+                               (call-with-input-file file
+                                 get-string-all))
+                             files)))))))
+
+(test-assert "import corrupt path"
+  (let* ((text (random-text))
+         (file (add-text-to-store %store "text" text))
+         (dump (call-with-bytevector-output-port
+                (cut export-paths %store (list file) <>))))
+    (delete-paths %store (list file))
+
+    ;; Flip a bit in the middle of the stream.
+    (let* ((index (quotient (bytevector-length dump) 3))
+           (byte  (bytevector-u8-ref dump index)))
+      (bytevector-u8-set! dump index (logxor #xff byte)))
+
+    (and (not (file-exists? file))
+         (guard (c ((nix-protocol-error? c)
+                    (pk 'c c)
+                    (and (not (zero? (nix-protocol-error-status c)))
+                         (string-contains (nix-protocol-error-message c)
+                                          "corrupt"))))
+           (let* ((source   (open-bytevector-input-port dump))
+                  (imported (import-paths %store source)))
+             (pk 'corrupt-imported imported)
+             #f)))))
+
 (test-end "store")