59 lines
2.1 KiB
Python
59 lines
2.1 KiB
Python
"""
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This is a sort of OS built in Python, not bootable, but creates a custom directory structure and path definition.
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This is the "kernel", it hosts all features and runs all programs.
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For safety reasons the kernel is isolated, which means that with every shell instance,
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A new kernel instance will follow it. Same goes for every program, it will need to call upon a brand-new kernel instance.
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Version: 0.1.1-nps3
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"""
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import os
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import runpy
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class PyJail:
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"""
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The "kernel" for PyNVOS
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"""
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def __init__(self):
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self.rootpath = ""
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self.rootpath = self.fs()
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def run_program(self, path_to_bin):
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"""
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Runs a specified program.
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"""
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path_to_bin = self.fs(path_to_bin)
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# print(path_to_bin)
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# print(str(self.rootpath) + str(path_to_bin))
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if path_to_bin == 3 or path_to_bin == 2:
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print("An error has occurred launching the program.")
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else:
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runpy.run_path(path_to_bin)
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def fs(self, check_path=None) -> str:
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"""
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Keeps track of the jailed filesystem and makes sure any calls to any
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file get done in the jailed filesystem
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"""
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if check_path is not None:
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if os.path.exists(f"{self.rootpath}{check_path}"):
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if check_path.startswith("."):
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check_path = check_path.lstrip(".")
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return os.getcwd() + check_path if "vfs" in os.getcwd() else 2
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return self.rootpath + check_path
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elif self.rootpath in check_path:
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print("ERR: Cannot parse rootpath, expected vfspath")
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return 3
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else:
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# Path is not in the jailed fs, so we say it doesn't exist.
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print("ERR: File/directory doesn't exist in vfspath")
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return 2
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else:
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rootpath = os.getcwd() + "/vfs"
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return rootpath
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@staticmethod
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def is_posix_compatible() -> bool:
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"""
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Returns if the kernel is POSIX compatible.
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"""
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return False
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