Fix for running Qiling inside of IDAPython interpreter.

[xorhex]

Fix for #1426 / #1417 / #1362. Hopefully this fix works for more than just me 🤞

Checklist

Which kind of PR do you create?

• This PR only contains minor fixes.
• This PR contains major feature update.
• This PR introduces a new function/api for Qiling Framework.

Coding convention?

• The new code conforms to Qiling Framework naming convention.
• The imports are arranged properly.
• Essential comments are added.
• The reference of the new code is pointed out.

Extra tests?

• No extra tests are needed for this PR.
• I have added enough tests for this PR.
• Tests will be added after some discussion and review.

Changelog?

• This PR doesn't need to update Changelog.
• Changelog will be updated after some proper review.
• Changelog has been updated in my PR.

Target branch?

• The target branch is dev branch.

One last thing

• I have read the contribution guide

---

[elicn]

Code looks a bit cumbersome to be. Why not just use the following instead?

try:
    # ...
    sys.stdin.fileno()
    sys.stdout.fileno()
    sys.stderr.fileno()
except UnsupportedOperation:
    ...

Attempting to access the methods will raise the UnsupportedOperation exceotion without explicitly checking and raising. This is actually how the original code works.

[xorhex]

Added error catching for AttributeError as UnsupportedOperation does not catch this error.

Without AttributeError being handled:

  File "/home/user/.local/lib/python3.10/site-packages/qiling/os/os.py", line 65, in __init__
    sys.stdout.fileno()
  File "/home/user/.local/lib/python3.10/site-packages/colorama/ansitowin32.py", line 29, in __getattr__
    return getattr(self.__wrapped, name)
AttributeError: 'IDAPythonStdOut' object has no attribute 'fileno'

Tested locally and this fix also works for my instance of IDA.

[elicn]

Thanks for the update.
Can you also test that in a regular Python interpreter? (e.g. IDLE)

[xorhex]

Sorry for the delay - testing in Linux terminal window:

❯ python3 emu.py 
[=] 	Initiate stack address at 0xfffdd000 
[=] 	Loading /home/user/rootfs/x86_windows/test.exe to 0x400000
[=] 	PE entry point at 0x45e990
[=] 	TEB is at 0x6000
[=] 	PEB is at 0x61b0
[=] 	LDR is at 0x6630
[=] 	Loading ntdll.dll ...
[=] 	Done loading ntdll.dll
[=] 	Loading kernel32.dll ...
[=] 	Loading kernelbase.dll ...
[=] 	Done loading kernelbase.dll
[=] 	Done loading kernel32.dll
[=] 	Loading mscoree.dll ...
[=] 	Calling mscoree.dll DllMain at 0x10200a30
[=] 	GetSystemTimeAsFileTime(lpSystemTimeAsFileTime = 0xffffcfd8)
[=] 	GetCurrentProcessId() = 0x7cc
[=] 	GetCurrentThreadId() = 0x0
[=] 	GetTickCount() = 0x30d40
[=] 	QueryPerformanceCounter(lpPerformanceCount = 0xffffcfd0) = 0x0
[=] 	GetVersionExA(lpVersionInformation = "\x94") = 0x1
[=] 	HeapCreate(flOptions = 0, dwInitialSize = 0x1000, dwMaximumSize = 0) = 0x50006d0
[=] 	GetModuleHandleW(lpModuleName = "KERNELBASE.DLL") = 0x10000000
[=] 	GetProcAddress(hModule = 0x10000000, lpProcName = "FlsAlloc") = 0x100fbea0
[=] 	GetProcAddress(hModule = 0x10000000, lpProcName = "FlsGetValue") = 0x100e70c0

Seems to print to the console just fine.

[xorhex]

Anything else needed from me? Thanks!