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import os
import platform
import textwrap
import pymupdf
def test_tesseract():
'''
This checks that MuPDF has been built with tesseract support.
By default we don't supply a valid `tessdata` directory, and just assert
that attempting to use Tesseract raises the expected error (which checks
that MuPDF is built with Tesseract support).
But if TESSDATA_PREFIX is set in the environment, we assert that
FzPage.get_textpage_ocr() succeeds.
'''
path = os.path.abspath( f'{__file__}/../resources/2.pdf')
doc = pymupdf.open( path)
page = doc[5]
if hasattr(pymupdf, 'mupdf'):
# rebased.
if pymupdf.mupdf_version_tuple < (1, 25, 4):
tail = 'OCR initialisation failed'
else:
tail = 'Tesseract language initialisation failed'
e_expected = f'code=3: {tail}'
if platform.system() == 'OpenBSD':
# 2023-12-12: For some reason the SWIG catch code only catches
# the exception as FzErrorBase.
e_expected_type = pymupdf.mupdf.FzErrorBase
print(f'OpenBSD workaround - expecting FzErrorBase, not FzErrorLibrary.')
else:
e_expected_type = pymupdf.mupdf.FzErrorLibrary
else:
# classic.
e_expected = 'OCR initialisation failed'
e_expected_type = None
tessdata_prefix = os.environ.get('TESSDATA_PREFIX')
if tessdata_prefix:
tp = page.get_textpage_ocr(full=True)
print(f'test_tesseract(): page.get_textpage_ocr() succeeded')
else:
try:
tp = page.get_textpage_ocr(full=True, tessdata='/foo/bar')
except Exception as e:
e_text = str(e)
print(f'Received exception as expected.')
print(f'{type(e)=}')
print(f'{e_text=}')
assert e_text == e_expected, f'Unexpected exception: {e_text!r}'
if e_expected_type:
print(f'{e_expected_type=}')
assert type(e) == e_expected_type, f'{type(e)=} != {e_expected_type=}.'
else:
assert 0, f'Expected exception {e_expected!r}'
rebased = hasattr(pymupdf, 'mupdf')
if rebased:
wt = pymupdf.TOOLS.mupdf_warnings()
if pymupdf.mupdf_version_tuple < (1, 25, 4):
assert wt == (
'UNHANDLED EXCEPTION!\n'
'library error: Tesseract initialisation failed'
)
else:
assert not wt
def test_3842b():
# Check Tesseract failure when given a bogus languages.
#
# Note that Tesseract seems to output its own diagnostics.
#
path = os.path.normpath(f'{__file__}/../../tests/resources/test_3842.pdf')
with pymupdf.open(path) as document:
page = document[6]
try:
partial_tp = page.get_textpage_ocr(flags=0, full=False, language='qwerty')
except Exception as e:
print(f'test_3842b(): received exception: {e}')
if 'No tessdata specified and Tesseract is not installed' in str(e):
pass
else:
if pymupdf.mupdf_version_tuple < (1, 25, 4):
assert 'OCR initialisation failed' in str(e)
wt = pymupdf.TOOLS.mupdf_warnings()
assert wt == 'UNHANDLED EXCEPTION!\nlibrary error: Tesseract initialisation failed\nUNHANDLED EXCEPTION!\nlibrary error: Tesseract initialisation failed', \
f'Unexpected {wt=}'
else:
assert 'Tesseract language initialisation failed' in str(e)
def test_3842():
path = os.path.normpath(f'{__file__}/../../tests/resources/test_3842.pdf')
with pymupdf.open(path) as document:
page = document[6]
try:
partial_tp = page.get_textpage_ocr(flags=0, full=False)
except Exception as e:
print(f'test_3842(): received exception: {e}', flush=1)
if 'No tessdata specified and Tesseract is not installed' in str(e):
pass
elif 'Tesseract language initialisation failed' in str(e):
pass
else:
assert 0, f'Unexpected exception text: {str(e)=}'
else:
text = page.get_text(textpage=partial_tp)
print()
print(text)
print(f'text:\n{text!r}')
# 2024-11-29: This is the current incorrect output. We use
# underscores for lines containing entirely whitespace (which
# textwrap.dedent() unfortunately replaces with empty lines).
text_expected = textwrap.dedent('''
NIST SP 800-223
_
High-Performance Computing Security
February 2024
_
__
iii
Table of Contents
1. Introduction ...................................................................................................................................1
2. HPC System Reference Architecture and Main Components ............................................................2
2.1.1. Components of the High-Performance Computing Zone ............................................................. 3
2.1.2. Components of the Data Storage Zone ........................................................................................ 4
2.1.3. Parallel File System ....................................................................................................................... 4
2.1.4. Archival and Campaign Storage .................................................................................................... 5
2.1.5. Burst Buffer .................................................................................................................................. 5
2.1.6. Components of the Access Zone .................................................................................................. 6
2.1.7. Components of the Management Zone ....................................................................................... 6
2.1.8. General Architecture and Characteristics .................................................................................... 6
2.1.9. Basic Services ................................................................................................................................ 7
2.1.10. Configuration Management ....................................................................................................... 7
2.1.11. HPC Scheduler and Workflow Management .............................................................................. 7
2.1.12. HPC Software .............................................................................................................................. 8
2.1.13. User Software ............................................................................................................................. 8
2.1.14. Site-Provided Software and Vendor Software ........................................................................... 8
2.1.15. Containerized Software in HPC .................................................................................................. 9
3. HPC Threat Analysis...................................................................................................................... 10
3.2.1. Access Zone Threats ................................................................................................................... 11
3.2.2. Management Zone Threats ........................................................................................................ 11
3.2.3. High-Performance Computing Zone Threats .............................................................................. 12
3.2.4. Data Storage Zone Threats ......................................................................................................... 12
4. HPC Security Posture, Challenges, and Recommendations ............................................................. 14
5. Conclusions .................................................................................................................................. 19
''',
)[1:].replace('_', ' ')
print(f'text_expected:\n{text_expected!r}')
assert text == text_expected
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