Revert "Enable HWP conversion on MacOS M1"

This reverts commit 214ce9720d. The
rationale is that we want to wait until the LibreOffice package that
allows HWP conversion in Alpine Linux lands in `alpine:latest`.

For more info, read
https://github.com/freedomofpress/dangerzone/issues/498#issuecomment-1739894100

README.md

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

dangerzone/conversion/doc_to_pixels.py

@@ -10,6 +10,7 @@ Here are the steps, with progress bar percentages:
 import asyncio
 import glob
 import os
+import platform
 import re
 import shutil
 import sys
@@ -188,6 +189,13 @@ class DocumentToPixels(DangerzoneConverter):
             #
             #     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 errors.DocFormatUnsupportedHWPQubes()
             if libreoffice_ext:

dangerzone/gui/main_window.py

@@ -557,13 +557,15 @@ class DocSelectionWidget(QtWidgets.QWidget):
         self.file_dialog.setWindowTitle("Open Documents")
         self.file_dialog.setFileMode(QtWidgets.QFileDialog.ExistingFiles)
 
-        # XXX: We disable loading HWP/HWPX files on Qubes, because H2ORestart does not work there.
-        # See:
+        # XXX: We disable loading HWP/HWPX files on Qubes or MacOS M1 platforms, 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 is_qubes_native_conversion():
+        if platform.machine() in ("arm64", "aarch64") or 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

@@ -4,6 +4,7 @@ import base64
 import contextlib
 import copy
 import os
+import platform
 import re
 import shutil
 import sys
@@ -307,7 +308,7 @@ class TestCliConversion(TestCliBasic):
 class TestExtraFormats(TestCli):
     @for_each_external_doc("*hwp*")
     def test_hancom_office(self, doc: str) -> None:
-        if is_qubes_native_conversion():
+        if platform.machine() in ("arm64", "aarch64") or 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: