mirror of
https://github.com/dortania/OpenCore-Legacy-Patcher.git
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89 lines
4.0 KiB
Python
89 lines
4.0 KiB
Python
# Reroute binaries to tmp directory, and mount a disk image of the payloads
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# Implements a shadowfile to avoid direct writes to the dmg
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# Copyright (C) 2022, Mykola Grymalyuk
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import plistlib
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from pathlib import Path
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import subprocess
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import tempfile
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import atexit
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import logging
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from resources import constants
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class RoutePayloadDiskImage:
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def __init__(self, global_constants: constants.Constants):
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self.constants: constants.Constants = global_constants
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self._setup_tmp_disk_image()
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def _setup_tmp_disk_image(self):
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"""
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Initialize temp directory and mount payloads.dmg
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Create overlay for patcher to write to
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Currently only applicable for GUI variant and not running from source
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"""
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if self.constants.wxpython_variant is True and not self.constants.launcher_script:
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logging.info("- Running in Binary GUI mode, switching to tmp directory")
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self.temp_dir = tempfile.TemporaryDirectory()
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logging.info(f"- New payloads location: {self.temp_dir.name}")
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logging.info("- Creating payloads directory")
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Path(self.temp_dir.name / Path("payloads")).mkdir(parents=True, exist_ok=True)
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self._unmount_active_dmgs(unmount_all_active=False)
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output = subprocess.run(
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[
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"hdiutil", "attach", "-noverify", f"{self.constants.payload_path}.dmg",
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"-mountpoint", Path(self.temp_dir.name / Path("payloads")),
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"-nobrowse",
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"-shadow", Path(self.temp_dir.name / Path("payloads_overlay")),
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"-passphrase", "password"
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],
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stdout=subprocess.PIPE, stderr=subprocess.STDOUT
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)
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if output.returncode == 0:
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logging.info("- Mounted payloads.dmg")
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self.constants.current_path = Path(self.temp_dir.name)
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self.constants.payload_path = Path(self.temp_dir.name) / Path("payloads")
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atexit.register(self._unmount_active_dmgs, unmount_all_active=False)
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else:
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logging.info("- Failed to mount payloads.dmg")
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logging.info(f"Output: {output.stdout.decode()}")
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logging.info(f"Return Code: {output.returncode}")
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def _unmount_active_dmgs(self, unmount_all_active=True):
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"""
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Unmounts disk images associated with OCLP
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Finds all DMGs that are mounted, and forcefully unmount them
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If our disk image was previously mounted, we need to unmount it to use again
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This can happen if we crash during a previous secession, however 'atexit' class should hopefully avoid this
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Parameters:
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unmount_all_active (bool): If True, unmount all active DMGs, otherwise only unmount our own DMG
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"""
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dmg_info = subprocess.run(["hdiutil", "info", "-plist"], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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dmg_info = plistlib.loads(dmg_info.stdout)
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for image in dmg_info["images"]:
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if image["image-path"].endswith("payloads.dmg"):
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if unmount_all_active is False:
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# Check that only our personal payloads.dmg is unmounted
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if "shadow-path" in image:
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if self.temp_dir.name in image["shadow-path"]:
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logging.info("- Unmounting personal payloads.dmg")
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subprocess.run(
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["hdiutil", "detach", image["system-entities"][0]["dev-entry"], "-force"],
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stdout=subprocess.PIPE, stderr=subprocess.STDOUT
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)
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else:
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logging.info(f"- Unmounting payloads.dmg at: {image['system-entities'][0]['dev-entry']}")
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subprocess.run(
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["hdiutil", "detach", image["system-entities"][0]["dev-entry"], "-force"],
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stdout=subprocess.PIPE, stderr=subprocess.STDOUT
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) |