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Differential D8862

Write search bolding in a way which is certainly HTML-safe
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Authored by epriestley on Apr 25 2014, 7:20 PM.
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rP88ae24659396: Write search bolding in a way which is certainly HTML-safe
Summary

This algorithm is tricky, and uses phutil_safe_html() directly, which makes it potentially unsafe.

In particular, D8859 fixes a bug with it which caused it to produce non-utf8 output. This doesn't guarantee it's a security problem, but does make it suspicious.

I don't actually see a way to break it, but rewrite it so that it's absolutely bulletproof and does not need to call phutil_safe_html().

Test Plan

Screen_Shot_2014-04-25_at_12.17.32_PM.png (1×1 px, 166 KB)

@rugabarbo, if you have a chance, can you check if this still works for you?

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epriestley updated this revision to Diff 21022.Apr 25 2014, 7:20 PM
epriestley retitled this revision from to Write search bolding in a way which is certainly HTML-safe.
epriestley updated this object.
epriestley edited the test plan for this revision. (Show Details)
epriestley added a reviewer: btrahan.
epriestley added a subscriber: rugabarbo.
Herald added a subscriber: epriestley. · View Herald TranscriptApr 25 2014, 7:20 PM
Harbormaster completed remote builds in B69: Diff 21022.Apr 25 2014, 7:21 PM
epriestley updated this revision to Diff 21023.Apr 25 2014, 7:21 PM
  • Remove unnecessary line.
Harbormaster completed remote builds in B70: Diff 21023.Apr 25 2014, 7:22 PM
rugabarbo added a comment.Apr 25 2014, 7:39 PM

@epriestley, now I have no access to iMac, where I found bug D8859 (it appeared only for Mac OS X phabricator instance).
I get access to it only two days later :-(

If you can wait I will apply this patch for Mac OS X phabricator two days later...

Now I only have a laptop with "Ubuntu 14.04 LTS".
But here I couldn't reproduce this bug.

Phabricator instance on ubuntu works fine without D8859.
And it's magic for me.

btrahan accepted this revision.Apr 26 2014, 2:31 AM
btrahan edited edge metadata.

Seems unit testable if you anticipate more changes / swapping around implementations.

This revision is now accepted and ready to land.Apr 26 2014, 2:31 AM
epriestley closed this revision.Apr 26 2014, 7:44 PM
epriestley updated this revision to Diff 21043.

Closed by commit rP88ae24659396 (authored by @epriestley).

epriestley added a comment.Apr 26 2014, 7:46 PM

(I'm going with a gut feeling that unit tests on this probably won't pay for themselves, but I'll write some to repent if this gets touched again.)

rugabarbo added a comment.EditedApr 28 2014, 4:12 PM

@epriestley, I checked it for Mac OS X Phabricator installation (where I found this bug first time).
Now it works fine (search results aren't corrupted any more and bolding works fine too).

Thanks!

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src/
applications/
search/
view/
101 lines

Diff 21043

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src/applications/search/view/PhabricatorSearchResultView.php

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