;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Todor Kondić <tk.code@protonmail.com>
;;; Copyright © 2020 Oleg Pykhalov <go.wigust@gmail.com>
;;; Copyright © 2020 Hartmut Goebel <h.goebel@crazy-compilers.com>
;;; Copyright © 2020 Marius Bakke <marius@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.
;;;
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;;; 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 (gnu packages vnc)
  #:use-module (guix build-system cmake)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-mod</td></tr></table>
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    ("perl" ,perl)
       ,@(package-native-inputs tigervnc-client)
       ,@(package-inputs tigervnc-client)
       ,@(package-native-inputs xorg-server)))
    (inputs
     `(("perl" ,perl)
       ("coreutils" ,coreutils)
       ("xauth" ,xauth)
       ,@(package-inputs xorg-server)))
    (propagated-inputs
     `(("xauth" ,xauth)
       ,@(package-propagated-inputs xorg-server)))
    (arguments
     (substitute-keyword-arguments
         (package-arguments xorg-server)
       ((#:configure-flags flags)
        `(append '("--with-pic"         ; Taken from BUILDING.txt
                   "--without-dtrace"
                   "--disable-static"
                   "--disable-dri2"
                   "--disable-xinerama"
                   "--disable-xvfb"
                   "--disable-xnest"
                   "--disable-xorg"
                   "--disable-dmx"
                   "--disable-xwin"
                   "--disable-xephyr"
                   "--disable-kdrive"
                   ;; "--disable-config-dbus" ; This was a warning.
                   "--disable-config-hal"
                   "--disable-config-udev"
                   "--disable-dri2"
                   ;; "--enable-install-libxf86config" ; This, too, was a warning.
                   "--enable-glx")
                 (delete "--enable-xephyr" ,flags)))
       ((#:modules modules)
        `(append '((ice-9 ftw)
                   (ice-9 match)
                   (guix build utils)
                   (guix build gnu-build-system))
                 modules))
       ((#:phases phases)
        `(modify-phases ,phases
           (delete 'check)              ;)
           (add-after 'unpack 'copy-tvnc-xserver
             (lambda _
               (let*
                   ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                    (tvnc-xserver (string-append tvnc-src "/unix/xserver")))
                 (copy-recursively tvnc-xserver ".")
                 #t)))
           (add-after 'copy-tvnc-xserver 'patch-xserver
             (lambda _
               (let*
                   ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                    (xorg-server-version ,(package-version xorg-server))
                    (which-patch (lambda ()
                                   (let*
                                       ((patch-num (apply string-append
                                                          (list-head (string-split xorg-server-version
                                                                                   #\.)
                                                                     2)))
                                        (fn (format #f "~a/unix/xserver~a.patch" tvnc-src patch-num)))
                                     (when (not (file-exists? fn))
                                       (error (format #f "Patch file, ~a,
corresponding to the input xorg-server version, does not exist.  Installation
will fail.  " fn)))

                                     fn))) ; VNC patches for xserver have the
                                           ; form xserverXY[Y].patch, where
                                           ; X.Y[Y].Z is the Xorg server
					; version.
                    (xserver-patch (which-patch)))
                 (invoke "patch" "-p1" "-i" xserver-patch)
                 (invoke "autoreconf" "-fiv"))))
           (add-before 'build 'build-tigervnc
             (lambda _
               (let* ((out (assoc-ref %outputs "out"))
                      (tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                      (tvnc-build (string-append (getcwd) "/tigervnc-build")))
                 (mkdir-p tvnc-build)
                 (with-directory-excursion tvnc-build
                   (invoke "cmake" "-G" "Unix Makefiles"
                           (string-append "-DCMAKE_INSTALL_PREFIX=" out)
                           tvnc-src)
                   (invoke "make" "-j" (number->string (parallel-job-count)))))))
           (replace 'build
             (lambda _
               (let*  ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                       (tvnc-build (string-append (getcwd) "/tigervnc-build"))
                       (srcarg (string-append "TIGERVNC_SRCDIR=" tvnc-src))
                       (buildarg (string-append "TIGERVNC_BUILDDIR=" tvnc-build)))
                 (invoke "make" srcarg buildarg "-j"
                         (number->string (parallel-job-count))))))
           (add-before 'install 'install-tigervnc-aux
             (lambda _
               (let*  ((out (assoc-ref %outputs 'out))
                       (tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                       (tvnc-build (string-append (getcwd) "/tigervnc-build"))
                       (srcarg (string-append "TIGERVNC_SRCDIR=" tvnc-src))
                       (buildarg (string-append "TIGERVNC_BUILDDIR=" tvnc-build)))
                 (with-directory-excursion (string-append tvnc-build "/unix")
                   (invoke "make" srcarg buildarg "install")))))
           (replace 'install
             (lambda* _
               (let*  ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                       (tvnc-build (string-append (getcwd) "/tigervnc-build"))
                       (srcarg (string-append "TIGERVNC_SRCDIR=" tvnc-src))
                       (buildarg (string-append "TIGERVNC_BUILDDIR=" tvnc-build)))
                 (invoke "make" "install" srcarg buildarg))))))))
    (description "TigerVNC is a client/server implementation of VNC (Virtual
Network Computing).  It provides enough performance to run even 3D and video
applications.  It also provides extensions for advanced authentication methods
and TLS encryption.  This package installs the VNC server, a program that will
enable users with VNC clients to log into a graphical session on the machine
where the server is installed.")))

(define-public libvnc
  (package
    (name "libvnc")
    (version "0.9.13")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/LibVNC/libvncserver")
             (commit (string-append "LibVNCServer-" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0zz0hslw8b1p3crnfy3xnmrljik359h83dpk64s697dqdcrzy141"))))
    (build-system cmake-build-system)
    (arguments
     '(#:phases (modify-phases %standard-phases
                  (add-after 'unpack 'patch-cc-reference
                    (lambda _
                      (substitute* "test/includetest.sh"
                        (("^cc -I")
                         "gcc -I"))
                      #t)))))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("gnutls" ,gnutls)
       ("libgcrypt" ,libgcrypt)
       ("libjpeg" ,libjpeg-turbo)
       ("libpng" ,libpng)
       ("lzo" ,lzo)
       ("sdl2" ,sdl2)))
    (home-page "https://libvnc.github.io/")
    (synopsis "Cross-platform C libraries for implementing VNC server or
client")
    (description "This package provides @code{LibVNCServer} and
@code{LibVNCClient}.  These are cross-platform C libraries that allow you to
easily implement VNC server or client functionality in your program.")
    (license ;; GPL for programs, FDL for documentation
     (list license:gpl2+ license:fdl1.2+))))