flatpak: add support for OpenCL (HPC)

It is possible to use GPU acceleration via OpenCL within flatpak:
- https://gitlab.com/freedesktop-sdk/freedesktop-sdk/-/issues/1535
- flathub/com.openwall.John#13 (comment)

However, it's not clear what is actually needed for this to work (poor
documentation? or I'm failing to find it?).
- what is the minimum required to run `cl-info` inside a flatpak?

HPC (high performance computing) using GPU is very important to us.
NVIDIA is the target at the moment.

Our community does not have suitable hardware with CUDA installed to
use/test this PR.

=> Note: Review/Revert/Improve:
. Should I also add org.freedesktop.Platform.HIP.Nvidia?
. Is the `add-extensions:` necessary or useful? I want to enable NVIDIA support
but allow poor people (like me) to continue using flatpak, e.g., for CPU
formats.
. Test when possible:
```
+        "--socket=x11",
+        "--device=all"
```

Signed-off-by: Claudio André <dev@claudioandre.slmail.me>

.github/workflows/flatpak-bundle.yml

@@ -109,7 +109,7 @@ jobs:
           # Required defines
           export FLATPAK='true'
           export JTR_BIN='john'
-          export TEST=';full;extra;' # Controls how the test will happen
+          export TEST=';full;extra;OpenCL-info;' # Controls how the test will happen
 
           wget https://raw.githubusercontent.com/openwall/john-packages/main/scripts/run_tests.sh
           source run_tests.sh

deploy/flatpak/build.sh

@@ -31,7 +31,7 @@ TASK_RUNNING="Flatpak build"
 export -p DEPLOY_PAK FLATPAK_BUILD BASE TASK_RUNNING
 
 # Build options (system wide, disable checks, etc.)
-SYSTEM_WIDE='--with-systemwide --disable-opencl'
+SYSTEM_WIDE="--with-systemwide"
 X86_REGULAR="--disable-native-tests $SYSTEM_WIDE"
 X86_NO_OPENMP="--disable-native-tests $SYSTEM_WIDE --disable-openmp"
 

deploy/flatpak/com.openwall.John.json

@@ -6,9 +6,66 @@
   "sdk": "org.freedesktop.Sdk",
   "command": "john",
   "tags": ["1.9J1+2404"],
-  "finish-args": ["--filesystem=home"],
+  "finish-args": ["--filesystem=home", "--share=ipc", "--device=dri"],
+  "add-extensions": {
+    "org.freedesktop.Platform.GL": {
+      "version": "1.4",
+      "versions": "%{branch};%{branch-extra};1.4",
+      "directory": "%{lib}/GL",
+      "add-ld-path": "lib",
+      "merge-dirs": "%{gl_merge_dirs}",
+      "subdirectories": true,
+      "no-autodownload": true,
+      "autodelete": true,
+      "download-if": "active-gl-driver",
+      "enable-if": "active-gl-driver",
+      "autoprune-unless": "active-gl-driver"
+    }
+  },
   "cleanup": ["/include", "*.la", "*.a"],
   "modules": [
+    {
+      "name": "clinfo",
+      "no-autogen": true,
+      "no-make-install": true,
+      "build-commands": ["install -Dm755 -t /app/bin/ clinfo"],
+      "sources": [
+        {
+          "type": "archive",
+          "url": "https://github.com/Oblomov/clinfo/archive/refs/tags/3.0.23.01.25.tar.gz",
+          "sha256": "6dcdada6c115873db78c7ffc62b9fc1ee7a2d08854a3bccea396df312e7331e3"
+        }
+      ],
+      "modules": [
+        {
+          "name": "ocl-icd",
+          "sources": [
+            {
+              "type": "archive",
+              "url": "https://github.com/OCL-dev/ocl-icd/archive/refs/tags/v2.3.2.tar.gz",
+              "sha256": "ec47d7dcd961ea06695b067e8b7edb82e420ddce03e0081a908c62fd0b8535c5"
+            },
+            {
+              "type": "script",
+              "dest-filename": "autogen.sh",
+              "commands": ["autoreconf -fiv"]
+            }
+          ]
+        },
+        {
+          "name": "opencl-headers",
+          "buildsystem": "simple",
+          "build-commands": ["cp -av opencl22/CL /app/include"],
+          "sources": [
+            {
+              "type": "git",
+              "url": "https://github.com/KhronosGroup/OpenCL-Headers.git",
+              "commit": "e986688daf750633898dfd3994e14a9e618f2aa5"
+            }
+          ]
+        }
+      ]
+    },
     {
       "name": "libpcap",
       "sources": [

requirements.hash

@@ -2,7 +2,7 @@
 a1788258b118178c77e6d7de16723e07b2aa9191e7414a84e756fa831d02d0aa  ./clean_package.sh
 b6dd937dfccbc23fd618c5b259698c1eafd5ef54e7965c778c3ae1599c12a113  ./helper.sh
 a11e89f1d10be4235e247bc815e0549f06bef22fb5414acecf7d3e82cee0a70a  ./package_version.sh
-376ed40297353794e2c9e43c277e19743f37965ba9c4eb8260e8dff3230c1be9  ./run_tests.sh
+8ef989a660f91d0c20ec08f86ba5c6c6e47649730d1f9048a30f0a5f28710dbf  ./run_tests.sh
 5e4629cce7b4552876dc308a659e878b1b196df60327df50f462ec899d6d28ed  ./show_info.sh
 11aa0fb376310c49eb5c915f5db2c066d2e8b35950e8a6b604d75104994ec04f  ./Handle-self-confined-system-wide-build.patch
 1f93d80dd97a5450c6e36759148d2767e29bbf987c078d5e5089b702e77aece5  ./Remove-peflags-from-the-default-target.patch

scripts/run_tests.sh

@@ -72,9 +72,13 @@ echo "=> $JTR_BIN --list=build-info"
 
 "$JTR_BIN" --list=build-info
 
-if [[ "$HOST_OS" == "Darwin" || -z "${TEST##*OpenCL-full*}" ]]; then
+if [[ "$HOST_OS" == "Darwin" || -z "${TEST##*OpenCL-full*}" || -z "${TEST##*OpenCL-info*}" ]]; then
 	echo "---------------------------- OpenCL Devices ----------------------------"
 	"$JTR_BIN" --list=opencl-devices
+
+	if [[ "$FLATPAK" == "true" ]]; then
+		flatpak run --command=clinfo com.openwall.John
+	fi
 fi
 
 # shellcheck disable=SC2016