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elf: black

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This commit is contained in:
Willi Ballenthin
2022-12-09 16:07:46 +01:00
parent 1583fedba2
commit c958a6a286
1 changed files with 12 additions and 6 deletions
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18
capa/features/extractors/elf.py
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@@ -10,8 +10,8 @@ import logging
import itertools
import collections
from enum import Enum
from typing import Set, Dict, List, Tuple, BinaryIO, Iterator, Optional
from dataclasses import dataclass
from typing import BinaryIO, Optional, Dict, Set, Iterator, Tuple, List
logger = logging.getLogger(__name__)
@@ -320,9 +320,13 @@ class ELF:
shent = self.shbuf[shent_offset : shent_offset + self.e_shentsize]
if self.bitness == 32:
sh_name, sh_type, sh_flags, sh_addr, sh_offset, sh_size, sh_link = struct.unpack_from(self.endian + "IIIIIII", shent, 0x0)
sh_name, sh_type, sh_flags, sh_addr, sh_offset, sh_size, sh_link = struct.unpack_from(
self.endian + "IIIIIII", shent, 0x0
)
elif self.bitness == 64:
sh_name, sh_type, sh_flags, sh_addr, sh_offset, sh_size, sh_link = struct.unpack_from(self.endian + "IIQQQQI", shent, 0x0)
sh_name, sh_type, sh_flags, sh_addr, sh_offset, sh_size, sh_link = struct.unpack_from(
self.endian + "IIQQQQI", shent, 0x0
)
else:
raise NotImplementedError()
@@ -362,7 +366,7 @@ class ELF:
# strings are stored in the section referenced by the sh_link field of the section header.
# each Verneed struct contains a reference to the name of the library,
# each Vernaux struct contains a reference to the name of a symbol.
SHT_GNU_VERNEED = 0x6ffffffe
SHT_GNU_VERNEED = 0x6FFFFFFE
for shdr in self.section_headers:
if shdr.type != SHT_GNU_VERNEED:
continue
@@ -378,7 +382,9 @@ class ELF:
vn_offset = 0x0
while True:
# ElfXX_Verneed layout is the same on 32 and 64 bit
vn_version, vn_cnt, vn_file, vn_aux, vn_next = struct.unpack_from(self.endian + "HHIII", shdr.buf, vn_offset)
vn_version, vn_cnt, vn_file, vn_aux, vn_next = struct.unpack_from(
self.endian + "HHIII", shdr.buf, vn_offset
)
if vn_version != 1:
# unexpected format, don't try to keep parsing
break
@@ -437,7 +443,7 @@ class ELF:
@property
def strtab(self) -> Optional[bytes]:
"""
fetch the bytes of the string table
fetch the bytes of the string table
referenced by the dynamic section.
"""
DT_STRTAB = 0x5