Enable HWP conversion on MacOS M1

This PR reverts the patch that disables HWP / HWPX conversion on MacOS
M1. It does not fix conversion on Qubes OS (#494)

Previously, HWP / HWPX conversion didn't work on MacOS M1 systems (#498)
because libreoffice wasn't built with Java support on Alpine Linux for
ARM (aarch64).

Gratefully, the Alpine team has enabled Java support on the aarch64
system [1], so we can enable it again for ARM architectures.

Fixes #498

[1]: https://gitlab.alpinelinux.org/alpine/aports/-/commit/74d443f479df15fc57e6fde6ac02a36b24afdded

README.md

@@ -53,8 +53,7 @@ Dangerzone can convert these types of document into safe PDFs:
 - ODF Graphics (`.odg`)
 - Hancom HWP (Hangul Word Processor) (`.hwp`, `.hwpx`)
   * Not supported on
-    [MacOS with Apple Silicon CPU](https://github.com/freedomofpress/dangerzone/issues/498)
-    or [Qubes OS](https://github.com/freedomofpress/dangerzone/issues/494)
+    [Qubes OS](https://github.com/freedomofpress/dangerzone/issues/494)
 - Jpeg (`.jpg`, `.jpeg`)
 - GIF (`.gif`)
 - PNG (`.png`)

dangerzone/conversion/doc_to_pixels.py

@@ -10,7 +10,6 @@
 import asyncio
 import glob
 import os
-import platform
 import re
 import shutil
 import sys
@@ -167,13 +166,6 @@ async def convert(self) -> None:
             #
             #     https://github.com/freedomofpress/dangerzone/issues/494
             #     https://github.com/freedomofpress/dangerzone/issues/498
-            if libreoffice_ext == "h2orestart.oxt" and platform.machine() in (
-                "arm64",
-                "aarch64",
-            ):
-                raise ValueError(
-                    "HWP / HWPX formats are not supported in ARM architectures"
-                )
             if libreoffice_ext == "h2orestart.oxt" and running_on_qubes():
                 raise ValueError("HWP / HWPX formats are not supported in Qubes")
             if libreoffice_ext:

dangerzone/gui/main_window.py

@@ -552,15 +552,13 @@ def __init__(self, dangerzone: DangerzoneGui) -> None:
         self.file_dialog.setWindowTitle("Open Documents")
         self.file_dialog.setFileMode(QtWidgets.QFileDialog.ExistingFiles)
 
-        # XXX: We disable loading HWP/HWPX files on Qubes or MacOS M1 platforms, because
-        # H2ORestart does not work there. See:
+        # XXX: We disable loading HWP/HWPX files on Qubes, because H2ORestart does not work there.
+        # See:
         #
         # https://github.com/freedomofpress/dangerzone/issues/494
-        # https://github.com/freedomofpress/dangerzone/issues/498
         hwp_filters = "*.hwp *.hwpx"
-        if platform.machine() in ("arm64", "aarch64") or is_qubes_native_conversion():
+        if is_qubes_native_conversion():
             hwp_filters = ""
-
         self.file_dialog.setNameFilters(
             [
                 f"Documents (*.pdf *.docx *.doc *.docm *.xlsx *.xls *.pptx *.ppt *.odt *.odg *.odp *.ods {hwp_filters} *.jpg *.jpeg *.gif *.png *.tif *.tiff)"

tests/test_cli.py

@@ -4,7 +4,6 @@
 import contextlib
 import copy
 import os
-import platform
 import re
 import shutil
 import sys
@@ -308,7 +307,7 @@ def test_dummy_conversion_bulk(self, tmp_path: Path, sample_pdf: str) -> None:
 class TestExtraFormats(TestCli):
     @for_each_external_doc("*hwp*")
     def test_hancom_office(self, doc: str) -> None:
-        if platform.machine() in ("arm64", "aarch64") or is_qubes_native_conversion():
+        if is_qubes_native_conversion():
             pytest.skip("HWP / HWPX formats are not supported on this platform")
         with tempfile.NamedTemporaryFile("wb", delete=False) as decoded_doc:
             with open(doc, "rb") as encoded_doc: