;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.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/>.

;;;
;;; Download a binary file from an external source.
;;;

(use-modules (ice-9 match)
             (web uri)
             (web client)
             (rnrs io ports)
             (srfi srfi-11)
             (guix utils)
             (guix hash))

(define %url-base
  "http://alpha.gnu.org/gnu/guix/bootstrap"

  ;; Alternately:
  ;;"http://www.fdn.fr/~lcourtes/software/guix/packages"
  )

;; XXX: Work around <http://bugs.gnu.org/13095>, present in Guile
;; up to 2.0.7.
(module-define! (resolve-module '(web client))
                'shutdown (const #f))

(define (file-name->uri file)
  "Return the URI for FILE."
  (match (string-tokenize file (char-set-complement (char-set #\/)))
    ((_ ... system basename)
     (string->uri (string-append %url-base "/" system
                                 (match system
                                   ("armhf-linux"
                                    "/20150101/")
                                   (_
                                    "/20131110/"))
                                 basename)))))

(match (command-line)
  ((_ file expected-hash)
   (let ((uri (file-name->uri file)))
     (format #t "downloading file `~a'~%from `~a'...~%"
             file (uri->string uri))
     (let*-values (((resp data) (http-get uri #:decode-body? #f))
                   ((hash)      (bytevector->base16-string (sha256 data)))
                   ((part)      (string-append file ".part")))
       (if (string=? expected-hash hash)
           (begin
             (call-with-output-file part
               (lambda (port)
                 (put-bytevector port data)))
             (rename-file part file))
           (begin
             (format (current-error-port)
                     "file at `~a' has SHA256 ~a; expected ~a~%"
                     (uri->string uri) hash expected-hash)
             (exit 1)))))))
<th class='left'>Author</th></tr>
<tr><td><span title='2016-01-29 20:21:54 +0300'>2016-01-29</span></td><td><a href='/guix/commit/build-aux/hydra/demo-os.scm?id=171a0a13a4350ac9bbed0f2ed8e9c9777cc57b22'>Rename 'dmd' to 'shepherd' in comments and strings.</a><span class='msg-avail'>...<span class='msg-tooltip'>* build-aux/hydra/demo-os.scm (operating-system)[issue]: Point to
  shepherd instead of dmd.
* ROADMAP: Likewise.
* gnu/build/install.scm (directives): Adjust comment.
</span></span></td><td>Alex Kost</td></tr>
<tr><td><span title='2015-10-13 00:06:11 +0200'>2015-10-13</span></td><td><a href='/guix/commit/build-aux/hydra/demo-os.scm?id=c80f1559eb076e96107178e19a904c21b7cde51a'>hydra: Update demo OS to new service interface.</a><span class='msg-avail'>...<span class='msg-tooltip'>* build-aux/hydra/demo-os.scm: Import (gnu services dbus); remove
  arguments to 'dbus-service'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-10-04 00:10:03 +0200'>2015-10-04</span></td><td><a href='/guix/commit/build-aux/hydra/demo-os.scm?id=afd3d9316ce3c48cd7f7dbae64be0f8bcb756ba6'>Use "normalized codesets" everywhere.</a><span class='msg-avail'>...<span class='msg-tooltip'>In other words, change "xx_YY.UTF-8" to "xx_YY.utf8".

* guix/profiles.scm (ca-certificate-bundle): Use "en_US.utf8" instead of
  "en_US.UTF-8".
* guix/packages.scm (patch-and-repack): Likewise.
* guix/build/gnu-build-system.scm (install-locale): Likewise.
* guix/build-system/gnu.scm (gnu-build, gnu-cross-build): Likewise.
* gnu/packages/python.scm (python-ipython): Likewise.
* gnu/packages/gawk.scm (gawk): Likewise.
* build-aux/hydra/demo-os.scm: Likewise.
* gnu/packages/guile.scm (guile-ncurses)[arguments]: Remove
  'change-locale' phase.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-06-18 01:32:20 -0400'>2015-06-18</span></td><td><a href='/guix/commit/build-aux/hydra/demo-os.scm?id=c362a40a5825faafc76b72f69fb6595fa29d3f60'>hydra: Fix the demo OS.</a><span class='msg-avail'>...<span class='msg-tooltip'>* build-aux/hydra/demo-os.scm: Don't try to import (gnu services dbus), which
  no longer exists.  Use 'use-service-modules' and 'use-package-modules'.  Use
  "en_US.UTF-8" as system locale.
</span></span></td><td>Mark H Weaver</td></tr>