Subject: Re: [bug#33347] [PATCH 4/4] gnu: teeworlds: Update to 0.7.0 [fixes CVE-2018-18541].

From: Alex Vong <[email-masked]>
Date: Wed, 21 Nov 2018 22:41:08 +0800

Hello everyone,

I think Leo may be busy since he hasn't reply yet. Should I just push
given the CVE fix?

Cheers,
Alex

Alex Vong <[email-masked]> writes:

> Leo Famulari <[email-masked]> writes:
>
>> On Wed, Nov 14, 2018 at 09:36:25PM +0800, Alex Vong wrote:
>>> Well, I though we have a policy to remove bundle dependencies in order
>>> to avoid building the same library many times. Do we make exceptions for
>>> shared libraries w/o a build system? (an exception I can think of is
>>> gnulib)
>>
>> In general, yes, our policy is to unbundle things when practical.
>>
>> But there are some commonly used software implementations of basic
>> functions (like base64, sha1 (most hash functions actually), et cetera)
>> that are specifically designed to be copied and pasted into the
>> application that will be using them.
>>
>> You can usually tell this is the case because the thing will not have
>> any build system at all, like you suggest. Also because you find the
>> same copy-pasted code in almost every program you look at, like with
>> base64 and the hash functions.
>>
>>> Besides, the FIXME comment seems to suggest future readers to help
>>> remove the bundled pnglite. Debian also removes the bundled pnglite in
>>> teeworlds[0].
>>
>> Well, at a certain point it becomes a matter of taste, and the choice
>> should be made by the person doing the work — you! Either way is fine
>> for Guix :) The important thing is to get this Teeworlds fix pushed
>> without too much delay.
>
> Yes, we should get it fix fast :) I decide not to unbundle md5 because I
> actually need to use a hack to make teeworlds build with libmd. But I
> still have pnglite unbundle because it looks standalone enough for me
> and no hacks are required to unbundle. Here are the new patches:
>
> From 5e7cb656306622e88352332c6ed9668d8afc60c4 Mon Sep 17 00:00:00 2001
> From: Alex Vong <[email-masked]>
> Date: Mon, 12 Nov 2018 01:55:05 +0800
> Subject: [PATCH 1/4] gnu: Add pnglite.
>
> * gnu/packages/image.scm (pnglite): New variable.
> ---
>  gnu/packages/image.scm | 56 ++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 56 insertions(+)
>
> diff --git a/gnu/packages/image.scm b/gnu/packages/image.scm
> index 9bf9bd7e5..6c025e02f 100644
> --- a/gnu/packages/image.scm
> +++ b/gnu/packages/image.scm
> @@ -21,6 +21,7 @@
>  ;;; Copyright © 2018 Pierre Neidhardt <[email-masked]>
>  ;;; Copyright © 2018 Marius Bakke <[email-masked]>
>  ;;; Copyright © 2018 Pierre-Antoine Rouby <[email-masked]>
> +;;; Copyright © 2018 Alex Vong <[email-masked]>
>  ;;;
>  ;;; This file is part of GNU Guix.
>  ;;;
> @@ -253,6 +254,61 @@ files.  It can compress them as much as 40% losslessly.")
>    ;; This package used to be wrongfully name "pngcrunch".
>    (deprecated-package "pngcrunch" pngcrush))
>  
> +(define-public pnglite
> +  (let ((commit "11695c56f7d7db806920bd9229b69f230e6ffb38")
> +        (revision "1"))
> +    (package
> +      (name "pnglite")
> +      ;; The project was moved from sourceforge to github.
> +      ;; The latest version in sourceforge was 0.1.17:
> +      ;; https://sourceforge.net/projects/pnglite/files/pnglite/
> +      ;; No releases are made in github.
> +      (version (git-version "0.1.17" revision commit))
> +      (source (origin
> +                (method git-fetch)
> +                (uri (git-reference
> +                      (url "https://github.com/dankar/pnglite")
> +                      (commit commit)))
> +                (sha256
> +                 (base32
> +                  "1lmmkdxby5b8z9kx3zrpgpk33njpcf2xx8z9bgqag855sjsqbbby"))
> +                (file-name (git-file-name name version))))
> +      (build-system gnu-build-system)
> +      (arguments
> +       `(#:tests? #f ; no tests
> +         #:phases
> +         (modify-phases %standard-phases
> +           (delete 'configure)
> +           (replace 'build
> +             (lambda _
> +               ;; common build flags for building shared libraries
> +               (let ((cflags '("-O2" "-g" "-fPIC"))
> +                     (ldflags '("-shared")))
> +                 (apply invoke
> +                        `("gcc"
> +                          "-o" "libpnglite.so"
> +                          ,@cflags
> +                          ,@ldflags
> +                          "pnglite.c"))
> +                 #t)))
> +           (replace 'install
> +             (lambda* (#:key outputs #:allow-other-keys)
> +               (let* ((out (assoc-ref outputs "out"))
> +                      (lib (string-append out "/lib/"))
> +                      (include (string-append out "/include/"))
> +                      (doc (string-append out "/share/doc/"
> +                                          ,name "-" ,version "/")))
> +                 (install-file "libpnglite.so" lib)
> +                 (install-file "pnglite.h" include)
> +                 (install-file "README.md" doc)
> +                 #t))))))
> +      (inputs `(("zlib" ,zlib)))
> +      (home-page "https://github.com/dankar/pnglite")
> +      (synopsis "Pretty small png library")
> +      (description "A pretty small png library.
> +Currently all documentation resides in @file{pnglite.h}.")
> +      (license license:zlib))))
> +
>  (define-public libjpeg
>    (package
>     (name "libjpeg")
> -- 
> 2.19.1
>
> From e786c6e470a6930af9107e9722bea95a03c5d1c9 Mon Sep 17 00:00:00 2001
> From: Alex Vong <[email-masked]>
> Date: Mon, 12 Nov 2018 02:23:27 +0800
> Subject: [PATCH 2/4] gnu: Add json-parser.
>
> * gnu/packages/web.scm (json-parser): New variable.
> ---
>  gnu/packages/web.scm | 32 ++++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>
> diff --git a/gnu/packages/web.scm b/gnu/packages/web.scm
> index 03deab422..cde3d00c1 100644
> --- a/gnu/packages/web.scm
> +++ b/gnu/packages/web.scm
> @@ -28,6 +28,7 @@
>  ;;; Copyright © 2018 Pierre-Antoine Rouby <[email-masked]>
>  ;;; Copyright © 2018 Gábor Boskovits <[email-masked]>
>  ;;; Copyright © 2018 Mădălin Ionel Patrașcu <[email-masked]>
> +;;; Copyright © 2018 Alex Vong <[email-masked]>
>  ;;;
>  ;;; This file is part of GNU Guix.
>  ;;;
> @@ -582,6 +583,37 @@ It aims to conform to RFC 7159.")
>                     (("-Werror") ""))
>                   #t))))))
>  
> +(define-public json-parser
> +  (package
> +    (name "json-parser")
> +    (version "1.1.0")
> +    (source (origin
> +              ;; do not use auto-generated tarballs
> +              (method git-fetch)
> +              (uri (git-reference
> +                    (url "https://github.com/udp/json-parser.git")
> +                    (commit (string-append "v" version))))
> +              (file-name (git-file-name name version))
> +              (sha256
> +               (base32
> +                "1ls7z4fx0sq633s5bc0j1gh36sv087gmrgr7rza22wjq2d4606yf"))))
> +    ;; FIXME: we should build the python bindings in a separate package
> +    (build-system gnu-build-system)
> +    ;; the tests are written for the python bindings which are not built here
> +    (arguments '(#:tests? #f))
> +    (home-page "https://github.com/udp/json-parser")
> +    (synopsis "JSON parser written in ANSI C")
> +    (description "This package provides a very low footprint JSON parser
> +written in portable ANSI C.
> +
> +@itemize
> +@item BSD licensed with no dependencies (i.e. just drop the C file into your
> +project)
> +@item Never recurses or allocates more memory than it needs
> +@item Very simple API with operator sugar for C++
> +@end itemize")
> +    (license l:bsd-2)))
> +
>  (define-public qjson
>    (package
>      (name "qjson")
> -- 
> 2.19.1
>
> From b1cdc9568f8d82ed7096328d0b3845fc32b4efe8 Mon Sep 17 00:00:00 2001
> From: Alex Vong <[email-masked]>
> Date: Thu, 8 Nov 2018 10:53:43 +0800
> Subject: [PATCH 3/4] gnu: bam: Update to 0.5.1.
>
> * gnu/packages/build-tools.scm (bam): Update to 0.5.1.
> [source]: Switch to git-fetch.
> [arguments]: Use newly provided Makefile.
> [inputs]: Add lua.
> ---
>  gnu/packages/build-tools.scm | 37 ++++++++++++++++++------------------
>  1 file changed, 18 insertions(+), 19 deletions(-)
>
> diff --git a/gnu/packages/build-tools.scm b/gnu/packages/build-tools.scm
> index 42de56f8c..a52ee480a 100644
> --- a/gnu/packages/build-tools.scm
> +++ b/gnu/packages/build-tools.scm
> @@ -5,6 +5,7 @@
>  ;;; Copyright © 2018 Fis Trivial <[email-masked]>
>  ;;; Copyright © 2018 Tomáš Čech <[email-masked]>
>  ;;; Copyright © 2018 Marius Bakke <[email-masked]>
> +;;; Copyright © 2018 Alex Vong <[email-masked]>
>  ;;;
>  ;;; This file is part of GNU Guix.
>  ;;;
> @@ -30,6 +31,7 @@
>    #:use-module (guix build-system cmake)
>    #:use-module (gnu packages)
>    #:use-module (gnu packages compression)
> +  #:use-module (gnu packages lua)
>    #:use-module (gnu packages python)
>    #:use-module (gnu packages python-crypto)
>    #:use-module (gnu packages python-web)
> @@ -40,33 +42,30 @@
>  (define-public bam
>    (package
>      (name "bam")
> -    (version "0.4.0")
> +    (version "0.5.1")
>      (source (origin
> -              (method url-fetch)
> -              (uri (string-append "http://github.com/downloads/matricks/"
> -                                  "bam/bam-" version ".tar.bz2"))
> +              ;; do not use auto-generated tarballs
> +              (method git-fetch)
> +              (uri (git-reference
> +                    (url "https://github.com/matricks/bam.git")
> +                    (commit (string-append "v" version))))
> +              (file-name (git-file-name name version))
>                (sha256
>                 (base32
> -                "0z90wvyd4nfl7mybdrv9dsd4caaikc6fxw801b72gqi1m9q0c0sn"))))
> +                "13br735ig7lygvzyfd15fc2rdygrqm503j6xj5xkrl1r7w2wipq6"))))
>      (build-system gnu-build-system)
>      (arguments
> -     `(#:phases
> +     `(#:make-flags `("CC=gcc"
> +                      ,(string-append "INSTALL_PREFIX="
> +                                      (assoc-ref %outputs "out")))
> +       #:test-target "test"
> +       #:phases
>         (modify-phases %standard-phases
> -         (delete 'configure)
> -         (replace 'build
> -           (lambda _
> -             (zero? (system* "bash" "make_unix.sh"))))
> -         (replace 'check
> -           (lambda _
> -             (zero? (system* "python" "scripts/test.py"))))
> -         (replace 'install
> -           (lambda* (#:key outputs #:allow-other-keys)
> -             (let ((bin (string-append (assoc-ref outputs "out") "/bin")))
> -               (mkdir-p bin)
> -               (install-file "bam" bin)
> -               #t))))))
> +         (delete 'configure))))
>      (native-inputs
>       `(("python" ,python-2)))
> +    (inputs
> +     `(("lua" ,lua)))
>      (home-page "https://matricks.github.io/bam/")
>      (synopsis "Fast and flexible build system")
>      (description "Bam is a fast and flexible build system.  Bam uses Lua to
> -- 
> 2.19.1
>
> From 3aa13808d20fcf2eea585c85b96e8f6b1f5fe292 Mon Sep 17 00:00:00 2001
> From: Alex Vong <[email-masked]>
> Date: Mon, 12 Nov 2018 02:42:25 +0800
> Subject: [PATCH 4/4] gnu: teeworlds: Update to 0.7.0 [fixes CVE-2018-18541].
>
> * gnu/packages/games.scm (teeworlds): Update to 0.7.0.
> [source]: Switch to git-fetch. Remove all bundled libraries except md5.
> [arguments]: Adjust accordingly.
> [inputs]: Use sdl2 instead of sdl and python-wrapper instead of python-2.
> Add json-parser and pnglite.
> * gnu/packages/patches/teeworlds-use-latest-wavpack.patch: Update it.
> ---
>  gnu/packages/games.scm                        | 116 ++++++++++++------
>  .../teeworlds-use-latest-wavpack.patch        |  72 ++++++++---
>  2 files changed, 136 insertions(+), 52 deletions(-)
>
> diff --git a/gnu/packages/games.scm b/gnu/packages/games.scm
> index 3679aa09c..a1a571c51 100644
> --- a/gnu/packages/games.scm
> +++ b/gnu/packages/games.scm
> @@ -35,6 +35,7 @@
>  ;;; Copyright © 2018 Tim Gesthuizen <[email-masked]>
>  ;;; Copyright © 2018 Madalin Ionel-Patrascu <[email-masked]>
>  ;;; Copyright © 2018 Benjamin Slade <[email-masked]>
> +;;; Copyright © 2018 Alex Vong <[email-masked]>
>  ;;;
>  ;;; This file is part of GNU Guix.
>  ;;;
> @@ -4139,31 +4140,54 @@ small robot living in the nano world, repair its maker.")
>  (define-public teeworlds
>    (package
>      (name "teeworlds")
> -    (version "0.6.4")
> +    (version "0.7.0")
>      (source (origin
> -              (method url-fetch)
> -              (uri (string-append "https://github.com/teeworlds/teeworlds/"
> -                                  "archive/" version "-release.tar.gz"))
> -              (file-name (string-append name "-" version ".tar.gz"))
> +              ;; do not use auto-generated tarballs
> +              (method git-fetch)
> +              (uri (git-reference
> +                    (url "https://github.com/teeworlds/teeworlds.git")
> +                    (commit version)))
> +              (file-name (git-file-name name version))
>                (sha256
>                 (base32
> -                "1mqhp6xjl75l49050cid36wxyjn1qr0vjx1c709dfg1lkvmgs6l3"))
> -              (modules '((guix build utils)))
> -              (snippet
> -               '(begin
> -                  (for-each delete-file-recursively
> -                            '("src/engine/external/wavpack/"
> -                              "src/engine/external/zlib/"))
> +                "0jigg2yikihbivzs7hpljr0mghx1l9v4f1cdr8fbmqv2wb51ah8q"))
> +              (modules '((guix build utils)
> +                         (ice-9 ftw)
> +                         (ice-9 regex)
> +                         (srfi srfi-1)
> +                         (srfi srfi-26)))
> +              (snippet ; remove bundled libraries except md5
> +               '(let ((base-dir "src/engine/external/"))
> +                  (for-each (compose (cut delete-file-recursively <>)
> +                                     (cut string-append base-dir <>))
> +                            (remove (cut string-match "(^.)|(^md5$)" <>)
> +                                    (scandir base-dir)))
>                    #t))
>                (patches
>                 (search-patches "teeworlds-use-latest-wavpack.patch"))))
>      (build-system gnu-build-system)
>      (arguments
>       `(#:tests? #f ; no tests included
> +       #:modules ((guix build gnu-build-system)
> +                  (guix build utils)
> +                  (srfi srfi-26))
>         #:phases
>         (modify-phases %standard-phases
>           (replace 'configure
>             (lambda* (#:key outputs #:allow-other-keys)
> +             ;; The bundled json-parser uses an old API.
> +             ;; To use the latest non-bundled version, we need to pass the
> +             ;; length of the data in all 'json_parse_ex' calls.
> +             (define (use-latest-json-parser file)
> +               (substitute* file
> +                 (("engine/external/json-parser/json\\.h")
> +                  "json-parser/json.h")
> +                 (("json_parse_ex\\(&JsonSettings, pFileData, aError\\);")
> +                  "json_parse_ex(&JsonSettings,
> +                                 pFileData,
> +                                 strlen(pFileData),
> +                                 aError);")))
> +
>               ;; Embed path to assets.
>               (substitute* "src/engine/shared/storage.cpp"
>                 (("#define DATA_DIR.*")
> @@ -4173,50 +4197,68 @@ small robot living in the nano world, repair its maker.")
>                                 "\"")))
>  
>               ;; Bam expects all files to have a recent time stamp.
> -             (for-each (lambda (file)
> -                         (utime file 1 1))
> +             (for-each (cut utime <> 1 1)
>                         (find-files "."))
>  
>               ;; Do not use bundled libraries.
>               (substitute* "bam.lua"
> -               (("if config.zlib.value == 1 then")
> -                "if true then")
> -               (("wavpack = .*")
> -                "wavpack = {}
> -settings.link.libs:Add(\"wavpack\")\n"))
> +               (("local json = Compile.+$")
> +                "local json = nil
> +settings.link.libs:Add(\"jsonparser\")")
> +               (("local png = Compile.+$")
> +                "local png = nil
> +settings.link.libs:Add(\"pnglite\")")
> +               (("local wavpack = Compile.+$")
> +                "local wavpack = nil
> +settings.link.libs:Add(\"wavpack\")")
> +               (("if config\\.zlib\\.value == 1")
> +                "if config.zlib.value"))
> +             (substitute* "src/engine/client/graphics_threaded.cpp"
> +               (("engine/external/pnglite/pnglite\\.h")
> +                "pnglite.h"))
>               (substitute* "src/engine/client/sound.cpp"
> -               (("#include <engine/external/wavpack/wavpack.h>")
> -                "#include <wavpack/wavpack.h>"))
> +               (("engine/external/wavpack/wavpack\\.h")
> +                "wavpack/wavpack.h"))
> +             (for-each use-latest-json-parser
> +                       '("src/game/client/components/countryflags.cpp"
> +                         "src/game/client/components/menus_settings.cpp"
> +                         "src/game/client/components/skins.cpp"
> +                         "src/game/client/localization.cpp"
> +                         "src/game/editor/auto_map.h"
> +                         "src/game/editor/editor.cpp"))
>               #t))
>           (replace 'build
>             (lambda _
> -             (zero? (system* "bam" "-a" "-v" "release"))))
> +             (invoke "bam" "-a" "-v" "conf=release")))
>           (replace 'install
>             (lambda* (#:key outputs #:allow-other-keys)
> -             (let* ((out  (assoc-ref outputs "out"))
> -                    (bin  (string-append out "/bin"))
> -                    (data (string-append out "/share/teeworlds/data")))
> -               (mkdir-p bin)
> -               (mkdir-p data)
> -               (for-each (lambda (file)
> -                           (install-file file bin))
> -                         '("teeworlds" "teeworlds_srv"))
> -               (copy-recursively "data" data)
> +             (let* ((arch ,(system->linux-architecture
> +                            (or (%current-target-system)
> +                                (%current-system))))
> +                    (build (string-append "build/" arch "/release/"))
> +                    (data-built (string-append build "data/"))
> +                    (out (assoc-ref outputs "out"))
> +                    (bin (string-append out "/bin/"))
> +                    (data (string-append out "/share/teeworlds/data/")))
> +               (for-each (cut install-file <> bin)
> +                         (map (cut string-append build <>)
> +                              '("teeworlds" "teeworlds_srv")))
> +               (copy-recursively data-built data)
>                 #t))))))
> -    ;; FIXME: teeworlds bundles the sources of "pnglite", a two-file PNG
> -    ;; library without a build system.
>      (inputs
>       `(("freetype" ,freetype)
>         ("glu" ,glu)
> +       ("json-parser" ,json-parser)
>         ("mesa" ,mesa)
> -       ("sdl-union" ,(sdl-union (list sdl
> -                                      sdl-mixer
> -                                      sdl-image)))
> +       ("pnglite" ,pnglite)
> +       ("sdl2" ,sdl2)
> +       ("sdl2-image" ,sdl2-image)
> +       ("sdl2-mixer" ,sdl2-mixer)
>         ("wavpack" ,wavpack)
>         ("zlib" ,zlib)))
>      (native-inputs
>       `(("bam" ,bam)
> -       ("python" ,python-2)
> +       ("python" ,python-wrapper)
>         ("pkg-config" ,pkg-config)))
>      (home-page "https://www.teeworlds.com")
>      (synopsis "2D retro multiplayer shooter game")
> diff --git a/gnu/packages/patches/teeworlds-use-latest-wavpack.patch b/gnu/packages/patches/teeworlds-use-latest-wavpack.patch
> index e9fd99108..3ad1340d2 100644
> --- a/gnu/packages/patches/teeworlds-use-latest-wavpack.patch
> +++ b/gnu/packages/patches/teeworlds-use-latest-wavpack.patch
> @@ -1,10 +1,20 @@
> -Downloaded from https://anonscm.debian.org/cgit/pkg-games/teeworlds.git/plain/debian/patches/new-wavpack.patch.
> +Downloaded from https://salsa.debian.org/games-team/teeworlds/raw/master/debian/patches/new-wavpack.patch.
>  
> -This patch lets us build teeworlds with wavpack 5.1.0.
> +From: Markus Koschany <[email-masked]>
> +Date: Thu, 25 Oct 2018 20:52:27 +0200
> +Subject: new-wavpack
>  
> +Make wavpack compatible with Debian's version.
> +---
> + src/engine/client/sound.cpp | 33 +++++++++++++++------------------
> + src/engine/client/sound.h   |  4 ----
> + 2 files changed, 15 insertions(+), 22 deletions(-)
> +
> +diff --git a/src/engine/client/sound.cpp b/src/engine/client/sound.cpp
> +index 048ec24..80de3c5 100644
>  --- a/src/engine/client/sound.cpp
>  +++ b/src/engine/client/sound.cpp
> -@@ -328,17 +328,14 @@ void CSound::RateConvert(int SampleID)
> +@@ -325,10 +325,6 @@ void CSound::RateConvert(int SampleID)
>   	pSample->m_NumFrames = NumFrames;
>   }
>   
> @@ -12,10 +22,10 @@ This patch lets us build teeworlds with wavpack 5.1.0.
>  -{
>  -	return io_read(ms_File, pBuffer, Size);
>  -}
> --
> - int CSound::LoadWV(const char *pFilename)
> + 
> + ISound::CSampleHandle CSound::LoadWV(const char *pFilename)
>   {
> - 	CSample *pSample;
> +@@ -336,6 +332,8 @@ ISound::CSampleHandle CSound::LoadWV(const char *pFilename)
>   	int SampleID = -1;
>   	char aError[100];
>   	WavpackContext *pContext;
> @@ -24,17 +34,18 @@ This patch lets us build teeworlds with wavpack 5.1.0.
>   
>   	// don't waste memory on sound when we are stress testing
>   	if(g_Config.m_DbgStress)
> -@@ -351,19 +348,23 @@ int CSound::LoadWV(const char *pFilename
> - 	if(!m_pStorage)
> - 		return -1;
> +@@ -349,25 +347,29 @@ ISound::CSampleHandle CSound::LoadWV(const char *pFilename)
> + 		return CSampleHandle();
>   
> + 	lock_wait(m_SoundLock);
>  -	ms_File = m_pStorage->OpenFile(pFilename, IOFLAG_READ, IStorage::TYPE_ALL);
>  -	if(!ms_File)
>  +	File = m_pStorage->OpenFile(pFilename, IOFLAG_READ, IStorage::TYPE_ALL, aWholePath, sizeof(aWholePath));
>  +	if(!File)
>   	{
>   		dbg_msg("sound/wv", "failed to open file. filename='%s'", pFilename);
> - 		return -1;
> + 		lock_unlock(m_SoundLock);
> + 		return CSampleHandle();
>   	}
>  +	else
>  +	{
> @@ -43,7 +54,14 @@ This patch lets us build teeworlds with wavpack 5.1.0.
>   
>   	SampleID = AllocID();
>   	if(SampleID < 0)
> - 		return -1;
> + 	{
> +-		io_close(ms_File);
> +-		ms_File = 0;
> ++		io_close(File);
> ++		File = 0;
> + 		lock_unlock(m_SoundLock);
> + 		return CSampleHandle();
> + 	}
>   	pSample = &m_aSamples[SampleID];
>   
>  -	pContext = WavpackOpenFileInput(ReadData, aError);
> @@ -51,7 +69,29 @@ This patch lets us build teeworlds with wavpack 5.1.0.
>   	if (pContext)
>   	{
>   		int m_aSamples = WavpackGetNumSamples(pContext);
> -@@ -419,9 +420,6 @@ int CSound::LoadWV(const char *pFilename
> +@@ -385,8 +387,8 @@ ISound::CSampleHandle CSound::LoadWV(const char *pFilename)
> + 		if(pSample->m_Channels > 2)
> + 		{
> + 			dbg_msg("sound/wv", "file is not mono or stereo. filename='%s'", pFilename);
> +-			io_close(ms_File);
> +-			ms_File = 0;
> ++			io_close(File);
> ++			File = 0;
> + 			lock_unlock(m_SoundLock);
> + 			return CSampleHandle();
> + 		}
> +@@ -401,8 +403,8 @@ ISound::CSampleHandle CSound::LoadWV(const char *pFilename)
> + 		if(BitsPerSample != 16)
> + 		{
> + 			dbg_msg("sound/wv", "bps is %d, not 16, filname='%s'", BitsPerSample, pFilename);
> +-			io_close(ms_File);
> +-			ms_File = 0;
> ++			io_close(File);
> ++			File = 0;
> + 			lock_unlock(m_SoundLock);
> + 			return CSampleHandle();
> + 		}
> +@@ -429,9 +431,6 @@ ISound::CSampleHandle CSound::LoadWV(const char *pFilename)
>   		dbg_msg("sound/wv", "failed to open %s: %s", pFilename, aError);
>   	}
>   
> @@ -61,14 +101,16 @@ This patch lets us build teeworlds with wavpack 5.1.0.
>   	if(g_Config.m_Debug)
>   		dbg_msg("sound/wv", "loaded %s", pFilename);
>   
> -@@ -527,7 +525,5 @@ void CSound::StopAll()
> - 	lock_unlock(m_SoundLock);
> +@@ -560,7 +559,5 @@ bool CSound::IsPlaying(CSampleHandle SampleID)
> + 	return Ret;
>   }
>   
>  -IOHANDLE CSound::ms_File = 0;
>  -
>   IEngineSound *CreateEngineSound() { return new CSound; }
>   
> +diff --git a/src/engine/client/sound.h b/src/engine/client/sound.h
> +index ff357c0..cec2cde 100644
>  --- a/src/engine/client/sound.h
>  +++ b/src/engine/client/sound.h
>  @@ -21,10 +21,6 @@ public:
> @@ -81,4 +123,4 @@ This patch lets us build teeworlds with wavpack 5.1.0.
>  -
>   	virtual bool IsSoundEnabled() { return m_SoundEnabled != 0; }
>   
> - 	virtual int LoadWV(const char *pFilename);
> + 	virtual CSampleHandle LoadWV(const char *pFilename);