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fix(memory): Add NULL checks for strdup() return values in multiple l…#2195

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Navdeepkaur-11:fix/strdup-null-checks
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fix(memory): Add NULL checks for strdup() return values in multiple l…#2195
Navdeepkaur-11 wants to merge 2 commits intoCCExtractor:masterfrom
Navdeepkaur-11:fix/strdup-null-checks

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@Navdeepkaur-11
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…ib_ccx files

In raising this pull request, I confirm the following (please check boxes):

  • I have read and understood the contributors guide.
  • I have checked that another pull request for this purpose does not exist.
  • I have considered, and confirmed that this submission will be valuable to others.
  • I accept that this submission may not be used, and the pull request closed at the will of the maintainer.
  • I give this submission freely, and claim no ownership to its content.
  • I have mentioned this change in the changelog.

My familiarity with the project is as follows (check one):

  • I have never used CCExtractor.
  • I have used CCExtractor just a couple of times.
  • I absolutely love CCExtractor, but have not contributed previously.
  • I am an active contributor to CCExtractor.

Summary

Multiple strdup() calls across lib_ccx were missing NULL
checks. If allocation fails, this could cause NULL pointer
dereferences or undefined behavior.

Files Changed

  • ccx_encoders_helpers.c lines 100, 129
  • output.c line 72
  • ccx_common_common.c line 61
  • matroska.c line 1047

Fix

Added NULL check with fatal(EXIT_NOT_ENOUGH_MEMORY, ...)
after each strdup() call, consistent with existing pattern
in ocr.c line 57.

Fixes #2194

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CCExtractor CI platform finished running the test files on linux. Below is a summary of the test results, when compared to test for commit 90128d8...:
Report Name Tests Passed
Broken 10/13
CEA-708 2/14
DVB 4/7
DVD 3/3
DVR-MS 2/2
General 27/27
Hardsubx 1/1
Hauppage 3/3
MP4 3/3
NoCC 10/10
Options 79/86
Teletext 20/21
WTV 13/13
XDS 34/34

Your PR breaks these cases:

NOTE: The following tests have been failing on the master branch as well as the PR:

  • ccextractor --startcreditsforatmost 2 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed:

    Test 8730

Congratulations: Merging this PR would fix the following tests:

  • ccextractor --autoprogram --out=srt --latin1 --quant 0 85271be4d2..., Last passed: Never
  • ccextractor --autoprogram --out=ttxt --latin1 --ucla dab1c1bd65..., Last passed: Never
  • ccextractor --out=srt --latin1 --autoprogram 29e5ffd34b..., Last passed: Never
  • ccextractor --out=spupng c83f765c66..., Last passed: Never
  • ccextractor --parsePAT --out=srt c83f765c66..., Last passed: Never
  • ccextractor --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
  • ccextractor --startcreditsnotbefore 1 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
  • ccextractor --startcreditsforatleast 1 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
  • ccextractor --endcreditsforatleast 3 --endcreditstext "CCextractor Ends crdit Testing" addf5e2fc9..., Last passed: Never

It seems that not all tests were passed completely. This is an indication that the output of some files is not as expected (but might be according to you).

Check the result page for more info.

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CCExtractor CI platform finished running the test files on windows. Below is a summary of the test results, when compared to test for commit e4bcade...:
Report Name Tests Passed
Broken 10/13
CEA-708 2/14
DVB 4/7
DVD 3/3
DVR-MS 2/2
General 27/27
Hardsubx 1/1
Hauppage 3/3
MP4 3/3
NoCC 10/10
Options 81/86
Teletext 20/21
WTV 13/13
XDS 34/34

NOTE: The following tests have been failing on the master branch as well as the PR:

Congratulations: Merging this PR would fix the following tests:

  • ccextractor --autoprogram --out=srt --latin1 --quant 0 85271be4d2..., Last passed: Never
  • ccextractor --autoprogram --out=ttxt --latin1 --ucla dab1c1bd65..., Last passed: Never
  • ccextractor --out=srt --latin1 --autoprogram 29e5ffd34b..., Last passed: Never
  • ccextractor --out=spupng c83f765c66..., Last passed: Never
  • ccextractor --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
  • ccextractor --startcreditsnotbefore 1 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
  • ccextractor --startcreditsnotafter 2 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
  • ccextractor --startcreditsforatleast 1 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
  • ccextractor --startcreditsforatmost 2 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never

This PR does not introduce any new test failures. However, some tests are failing on both master and this PR (see above).

Check the result page for more info.

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Successfully merging this pull request may close these issues.

[BUG] Unchecked strdup() return values in multiple lib_ccx files.

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