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Also parse bignum value dumps

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Signed-off-by: Gilles Peskine <[email protected]>
This commit is contained in:
Gilles Peskine
2026-04-01 09:45:50 +02:00
parent 98c12749b2
commit b0c3668772
1 changed files with 29 additions and 18 deletions
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scripts/mbedtls_framework/ssl_log_parser.py
+29 -18
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@@ -4,24 +4,26 @@
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later # SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
import re import re
from typing import Dict, Iterator, List, Tuple from typing import Dict, Iterator, List, Pattern, Tuple
class Info: class Info:
"""Information gathered from a log of ssl_client2 or ssl_server2.""" """Information gathered from a log of ssl_client2 or ssl_server2."""
DUMPING_RE = re.compile(' +'.join([ PREFIX_RE_S = (r'(?P<filename>\S+):(?P<lineno>[0-9]+): +' +
r'(?P<filename>\S+):(?P<lineno>[0-9]+):', r'\|(?P<level>[0-9]+)\|(?: (?P<address>\w+):)? +')
r'\|(?P<level>[0-9]+)\|(?: (?P<address>\w+):)?', DUMPING_RE = re.compile(
r'dumping \'(?P<what>.*?)\'', PREFIX_RE_S +
r'\((?P<length>[0-9]+) bytes\)', r'dumping \'(?P<what>.*?)\' \((?P<length>[0-9]+) bytes\)')
])) DUMP_CHUNK_RE = re.compile(
DUMP_CHUNK_RE = re.compile(' +'.join([ PREFIX_RE_S +
r'(?P<filename>\S+):(?P<lineno>[0-9]+):', r'[0-9a-f]+: +(?P<data>(?:[0-9a-f]{2} *){1,16})')
r'\|(?P<level>[0-9]+)\|(?: (?P<address>\w+):)?', VALUE_OF_RE = re.compile(
r'[0-9a-f]+:', PREFIX_RE_S +
r'(?P<data>(?:[0-9a-f]{2} *){1,16})', r'value of \'(?P<what>.*?)\' \((?P<length>[0-9]+) bits\)')
])) VALUE_CHUNK_RE = re.compile(
PREFIX_RE_S +
r'(?P<data>(?:[0-9a-f]{2} *){1,16})')
def __init__(self) -> None: def __init__(self) -> None:
"""Create an empty log info object.""" """Create an empty log info object."""
@@ -31,10 +33,10 @@ class Info:
"""Add a hex dump.""" """Add a hex dump."""
self.dumps.setdefault(name, []).append(hex_data) self.dumps.setdefault(name, []).append(hex_data)
def read_dump(self, @staticmethod
filename: str, def read_dump(filename: str,
lines: Iterator[Tuple[int, str]], lines: Iterator[Tuple[int, str]],
length: int) -> str: length: int, chunk_re: Pattern) -> str:
"""Read a hex dump. Return the hex data. """Read a hex dump. Return the hex data.
This method consumes the data dump lines from lines. This method consumes the data dump lines from lines.
@@ -43,7 +45,7 @@ class Info:
remaining = length remaining = length
while remaining > 0: while remaining > 0:
lineno, line = next(lines) lineno, line = next(lines)
m = self.DUMP_CHUNK_RE.match(line) m = chunk_re.match(line)
if not m: if not m:
raise Exception(f'{filename}:{lineno}: not a dump chunk as expected') raise Exception(f'{filename}:{lineno}: not a dump chunk as expected')
acc += m.group('data') acc += m.group('data')
@@ -64,7 +66,16 @@ class Info:
if m: if m:
what = m.group('what') what = m.group('what')
hex_data = self.read_dump(filename, lines, hex_data = self.read_dump(filename, lines,
int(m.group('length'))) int(m.group('length')),
self.DUMP_CHUNK_RE)
self.add_dump(what, hex_data)
m = self.VALUE_OF_RE.match(line)
if m:
what = m.group('what')
n_bits = int(m.group('length'))
n_bytes = (n_bits + 7) // 8
hex_data = self.read_dump(filename, lines,
n_bytes, self.VALUE_CHUNK_RE)
self.add_dump(what, hex_data) self.add_dump(what, hex_data)
def read_file(self, filename: str) -> None: def read_file(self, filename: str) -> None: