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  • poppler
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  • #558

Closed
Open
Opened Sep 28, 2017 by Bugzilla Migration User@bugzilla-migration

Fix handling of UTF16-LE annotations

Submitted by Christophe Fergeau @teuf

Assigned to poppler-bugs

Link to original bug (#103023)

Description

Created attachment 134538 Test case

The 'unicode' annotation in the attached test case does not render properly. I added it through the default mail application on my iOS11 iphone. I trade that down to _poppler_goo_string_to_utf8() which assumes UTF16 strings will always be big endian, while in my test file, a little endian UTF16 string is used. I've fixed this by adding 2 new methods to GooString (hasBigEndianBOM() hasLittleEndianBOM()), but all users of GooString::hasUnicodeMarker() should probably be audited and handle both types of UTF16 strings unless the pdf specs mandates big endian strings. Since I'm not familiar at all with the PDF format, I haven't tried to address this yet.

Attachment 134538, "Test case":
poppler-utf16-le.pdf

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Reference: poppler/poppler#558