Add script to fix code signing for qt packages on mac

CURA-9365

scripts/fix_app_qt_folder_names_for_codesign.py

@@ -0,0 +1,128 @@
+# -*- coding: utf-8 -*-
+
+# Due to the dots present in the various qt paths code signing doesn't work on MacOS
+# Running this script over the packaged .app fill fixes that problem
+#
+# usage: python3 fix_app_qt_folder_names_for_codesign.py dist/dist/Ultimaker-Cura.app
+#
+# source: https://github.com/pyinstaller/pyinstaller/wiki/Recipe-OSX-Code-Signing-Qt
+
+import os
+import shutil
+import sys
+from pathlib import Path
+from typing import Generator, List, Optional
+
+from macholib.MachO import MachO
+
+
+def create_symlink(folder: Path) -> None:
+    """Create the appropriate symlink in the MacOS folder
+    pointing to the Resources folder.
+    """
+    sibbling = Path(str(folder).replace("MacOS", ""))
+
+    # PyQt5/Qt/qml/QtQml/Models.2
+    root = str(sibbling).partition("Contents")[2].lstrip("/")
+    # ../../../../
+    backward = "../" * (root.count("/") + 1)
+    # ../../../../Resources/PyQt5/Qt/qml/QtQml/Models.2
+    good_path = f"{backward}Resources/{root}"
+
+    folder.symlink_to(good_path)
+
+
+def fix_dll(dll: Path) -> None:
+    """Fix the DLL lookup paths to use relative ones for Qt dependencies.
+    Inspiration: PyInstaller/depend/dylib.py:mac_set_relative_dylib_deps()
+    Currently one header is pointing to (we are in the Resources folder):
+        @loader_path/../../../../QtCore (it is referencing to the old MacOS folder)
+    It will be converted to:
+        @loader_path/../../../../../../MacOS/QtCore
+    """
+
+    def match_func(pth: str) -> Optional[str]:
+        """Callback function for MachO.rewriteLoadCommands() that is
+        called on every lookup path setted in the DLL headers.
+        By returning None for system libraries, it changes nothing.
+        Else we return a relative path pointing to the good file
+        in the MacOS folder.
+        """
+        basename = os.path.basename(pth)
+        if not basename.startswith("Qt"):
+            return None
+        return f"@loader_path{good_path}/{basename}"
+
+    # Resources/PyQt5/Qt/qml/QtQuick/Controls.2/Fusion
+    root = str(dll.parent).partition("Contents")[2][1:]
+    # /../../../../../../..
+    backward = "/.." * (root.count("/") + 1)
+    # /../../../../../../../MacOS
+    good_path = f"{backward}/MacOS"
+
+    # Rewrite Mach headers with corrected @loader_path
+    dll = MachO(dll)
+    dll.rewriteLoadCommands(match_func)
+    with open(dll.filename, "rb+") as f:
+        for header in dll.headers:
+            f.seek(0)
+            dll.write(f)
+        f.seek(0, 2)
+        f.flush()
+
+
+def find_problematic_folders(folder: Path) -> Generator[Path, None, None]:
+    """Recursively yields problematic folders (containing a dot in their name)."""
+    for path in folder.iterdir():
+        if not path.is_dir() or path.is_symlink():
+            # Skip simlinks as they are allowed (even with a dot)
+            continue
+        if "." in path.name:
+            yield path
+        else:
+            yield from find_problematic_folders(path)
+
+
+def move_contents_to_resources(folder: Path) -> Generator[Path, None, None]:
+    """Recursively move any non symlink file from a problematic folder
+    to the sibbling one in Resources.
+    """
+    for path in folder.iterdir():
+        if path.is_symlink():
+            continue
+        if path.name == "qml":
+            yield from move_contents_to_resources(path)
+        else:
+            sibbling = Path(str(path).replace("MacOS", "Resources"))
+            sibbling.parent.mkdir(parents=True, exist_ok=True)
+            shutil.move(path, sibbling)
+            yield sibbling
+
+
+def main(args: List[str]) -> int:
+    """
+    Fix the application to allow codesign (NXDRIVE-1301).
+    Take one or more .app as arguments: "Nuxeo Drive.app".
+    To overall process will:
+        - move problematic folders from MacOS to Resources
+        - fix the DLLs lookup paths
+        - create the appropriate symbolic link
+    """
+    for app in args:
+        name = os.path.basename(app)
+        print(f">>> [{name}] Fixing Qt folder names")
+        path = Path(app) / "Contents" / "MacOS"
+        for folder in find_problematic_folders(path):
+            for file in move_contents_to_resources(folder):
+                try:
+                    fix_dll(file)
+                except (ValueError, IsADirectoryError):
+                    continue
+            shutil.rmtree(folder)
+            create_symlink(folder)
+            print(f" !! Fixed {folder}")
+        print(f">>> [{name}] Application fixed.")
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv[1:]))