security-and-privacy/mat2
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Fix the PDF version 

This should prevent the testsuite from breaking,
and marginally increase fingerprinting resistance.
This commit is contained in:
jvoisin 2022-03-28 22:34:57 +02:00
parent 12582ba2f5
commit 5ccddae7f5
1 changed files with 3 additions and 0 deletions
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3
libmat2/pdf.py
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@ -22,6 +22,7 @@ if LooseVersion(poppler_version) < LooseVersion('0.46'): # pragma: no cover
raise ValueError("mat2 needs at least Poppler version 0.46 to work. \
The installed version is %s." % poppler_version) # pragma: no cover
FIXED_PDF_VERSION = cairo.PDFVersion.VERSION_1_5
class PDFParser(abstract.AbstractParser):
mimetypes = {'application/pdf', }
@ -52,6 +53,7 @@ class PDFParser(abstract.AbstractParser):
tmp_path = tempfile.mkstemp()[1]
pdf_surface = cairo.PDFSurface(tmp_path, 10, 10) # resized later anyway
pdf_surface.restrict_to_version(FIXED_PDF_VERSION)
pdf_context = cairo.Context(pdf_surface) # context draws on the surface
for pagenum in range(pages_count):
@ -80,6 +82,7 @@ class PDFParser(abstract.AbstractParser):
_, tmp_path = tempfile.mkstemp()
pdf_surface = cairo.PDFSurface(tmp_path, 32, 32) # resized later anyway
pdf_surface.restrict_to_version(FIXED_PDF_VERSION)
pdf_context = cairo.Context(pdf_surface)
for pagenum in range(pages_count):