def inspect_file(self, path):
file_info = {"path": path, "is_file": True}
mtime = os.path.getmtime(path)
# don't inspect files if they haven't been modified since last update
if path in self.cache:
file_info = self.cache[path]
if mtime == file_info["mtime"]:
return file_info
file_info["mtime"] = mtime
if is_elf(path):
file_info["is_elf"] = True
if is_elf_executable(path):
file_info["is_bin"] = True
else:
file_info["is_lib"] = True
try:
patchelf = PatchElf()
patchelf.logger.level = logging.WARNING
patchelf.log_stderr = False
file_info["pt_needed"] = patchelf.get_needed(path)
# an exception is raised if the elf has no PT_INTERP section
file_info["pt_interp"] = patchelf.get_interpreter(path)
except PatchElfError:
pass
if os.access(path, os.X_OK):
file_info["is_exec"] = True
return file_info
def get_dependants_of(self, lib_name):
dependants = set()
for root, dirs, files in os.walk(self.app_dir):
if "opt/libc" in root:
continue
for file in files:
abs_path = os.path.join(root, file)
try:
if has_magic_bytes(abs_path):
patch_elf = PatchElf()
patch_elf.log_stdout = False
patch_elf.log_stderr = False
patch_elf.log_command = False
needs = patch_elf.get_needed(abs_path)
if lib_name in needs:
dependants.add(
os.path.relpath(abs_path, self.app_dir))
except FileNotFoundError:
pass
except PatchElfError:
pass
return dependants
def get_bundle_needed_libs(self):
libs_needed = set()
bundle_libs = set()
for root, dirs, files in os.walk(self.app_dir):
if "opt/libc" in root:
continue
for file in files:
bundle_libs.add(file)
abs_path = os.path.join(root, file)
try:
if has_magic_bytes(abs_path):
patch_elf = PatchElf()
patch_elf.log_stdout = False
patch_elf.log_stderr = False
patch_elf.log_command = False
libs_needed.update(patch_elf.get_needed(abs_path))
except FileNotFoundError:
pass
except PatchElfError:
pass
bundle_needed = libs_needed - bundle_libs
return bundle_needed
def _set_interpreter(self, file, uuid):
original_interpreter = self.app_dir_cache.cache[file]["pt_interp"]
if original_interpreter.startswith("/tmp/appimage-"):
# skip, the binary has been patched already
return
try:
patchelf_command = PatchElf()
patchelf_command.log_stderr = False
patchelf_command.log_stdout = False
apprun_interpreter = self._gen_interpreter_link_path(
original_interpreter, uuid)
if original_interpreter and original_interpreter != apprun_interpreter:
# only include interpreters from standard paths
if original_interpreter.startswith("/lib"):
self.interpreters[
original_interpreter] = apprun_interpreter
logging.info("Replacing PT_INTERP on: %s" %
os.path.relpath(file, self.app_dir))
logging.debug('\t"%s" => "%s"' %
(original_interpreter, apprun_interpreter))
patchelf_command.set_interpreter(file, apprun_interpreter)
self.app_dir_cache.cache[file][
"pt_interp"] = apprun_interpreter
except PatchElfError:
pass
def _resolve_bin_interpreters(self):
patch_elf = PatchElf()
patch_elf.log_stderr = False
interpreter_paths = set()
for bin in self.runtime_bins:
try:
interpreter = patch_elf.get_interpreter(bin)
if not interpreter.startswith("/tmp"):
interpreter_paths.add(interpreter)
except PatchElfError:
pass
return interpreter_paths