#-------------------------------------------------------------------------------
# elftools example: elf_notes.py
#
# An example of obtaining note sections from an ELF file and examining
# the notes it contains.
#
# Eli Bendersky (eliben@gmail.com)
# This code is in the public domain
#-------------------------------------------------------------------------------
from __future__ import print_function
import sys

# If pyelftools is not installed, the example can also run from the root or
# examples/ dir of the source distribution.
sys.path[0:0] = ['.', '..']

from elftools.elf.elffile import ELFFile
from elftools.elf.sections import NoteSection
from elftools.common.py3compat import bytes2hex


def process_file(filename):
 print('Processing file:', filename)
 with open(filename, 'rb') as f:
 for sect in ELFFile(f).iter_sections():
 if not isinstance(sect, NoteSection):
 continue
 print(' Note section "%s" at offset 0x%.8x with size %d' % (
 sect.name, sect.header['sh_offset'], sect.header['sh_size']))
 for note in sect.iter_notes():
 print(' Name:', note['n_name'])
 print(' Type:', note['n_type'])
 desc = note['n_desc']
 if note['n_type'] == 'NT_GNU_ABI_TAG':
 print(' Desc: %s, ABI: %d.%d.%d' % (
 desc['abi_os'],
 desc['abi_major'],
 desc['abi_minor'],
 desc['abi_tiny']))
 elif note['n_type'] in {'NT_GNU_BUILD_ID', 'NT_GNU_GOLD_VERSION'}:
 print(' Desc:', desc)
 else:
 print(' Desc:', bytes2hex(desc))


if __name__ == '__main__':
 if sys.argv[1] == '--test':
 for filename in sys.argv[2:]:
 process_file(filename)