gh-135815: skip netrc security checks if os.getuid is missing

[picnixz]

• Issue: netrc security check may fail on WASI due to the lack of os.getuid #135815

[serhiy-storchaka]

LGTM.

Added a couple of suggestions, it is up to you.

[serhiy-storchaka]

The message looks weird. Would not be better to rewrite in in the following way?

                    (f"~/.netrc file owner ({fowner}) does not match"
                     f" current user ({user})"))

[picnixz]

I'll change it in a follow-up PR so that only unstable branches are affected.

[miss-islington-app]

Thanks @picnixz for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14.
🐍🍒⛏🤖

[bedevere-app]

GH-135825 is a backport of this pull request to the 3.14 branch.

[bedevere-app]

GH-135826 is a backport of this pull request to the 3.13 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot aarch64 Fedora Stable Refleaks 3.14 (tier-2) has failed when building commit 10f9db9.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1710/builds/192) and take a look at the build logs.
4. Check if the failure is related to this commit (10f9db9) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1710/builds/192

Failed tests:

• test_perf_profiler

Failed subtests:

• test_python_calls_do_not_appear_in_the_stack_if_perf_deactivated - test.test_perf_profiler.TestPerfProfilerWithDwarf.test_python_calls_do_not_appear_in_the_stack_if_perf_deactivated
• test_timerfd_select - test.test_os.TimerfdTests.test_timerfd_select
• test_python_calls_appear_in_the_stack_if_perf_activated - test.test_perf_profiler.TestPerfProfilerWithDwarf.test_python_calls_appear_in_the_stack_if_perf_activated

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.14.cstratak-fedora-stable-aarch64.refleak/build/Lib/test/test_perf_profiler.py", line 399, in test_python_calls_do_not_appear_in_the_stack_if_perf_deactivated
    self.assertEqual(stderr, "")
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^
AssertionError: 'Warning:\nProcessed 403 events and lost 1[34 chars]\n\n' != ''
- Warning:
- Processed 403 events and lost 1 chunks!
- 
- Check IO/CPU overload!
- 


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.14.cstratak-fedora-stable-aarch64.refleak/build/Lib/test/test_perf_profiler.py", line 399, in test_python_calls_do_not_appear_in_the_stack_if_perf_deactivated
    self.assertEqual(stderr, "")
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^
AssertionError: 'Warning:\nProcessed 429 events and lost 1[34 chars]\n\n' != ''
- Warning:
- Processed 429 events and lost 1 chunks!
- 
- Check IO/CPU overload!
- 


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.14.cstratak-fedora-stable-aarch64.refleak/build/Lib/test/test_perf_profiler.py", line 373, in test_python_calls_appear_in_the_stack_if_perf_activated
    self.assertEqual(stderr, "")
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^
AssertionError: 'Warning:\nProcessed 653 events and lost 1[34 chars]\n\n' != ''
- Warning:
- Processed 653 events and lost 1 chunks!
- 
- Check IO/CPU overload!
- 


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.14.cstratak-fedora-stable-aarch64.refleak/build/Lib/test/test_os.py", line 4450, in test_timerfd_select
    self.assertEqual(self.read_count_signaled(fd), 1)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: 2 != 1