def get_addr2line(traceback, binfile="", search_dirs=[], shlib_db=None):
"""
Get the decode of one single OSC traceback via addr2line
Note: 1. for DYN type binary, relative offset value is provided to addr2line;
2. for EXEC type binary, absolute address value is provided to addr2line.
:param traceback: one traceback in shlib+offset or +offset format
:param binfile: the main binary file that prints the traceback
:param search_dirs: a list of root directories to search
:param shlib_db: the shlib_db obtained via ldd
:returns a string containing the "addr2line offset" decode output
"""
tokens = traceback.split("+")
afile = tokens[0]
thefile = ""
if not afile:
thefile = binfile
else:
if shlib_db and afile in shlib_db:
thefile = shlib_db[afile]
else:
thefile = find_shlib(g_search_dirs, afile)
verbose(
"decoding traceback: " + traceback + " file: " + afile + " => " +
str(thefile),
LEVEL_1,
)
if not thefile or not os.path.exists(thefile):
verbose(
"Failed to decode because " + afile + " and " + str(thefile) +
" do not exist!",
LEVEL_1,
)
return traceback + "\n"
offset = tokens[1]
elf_type = get_elf_type(thefile)
verbose(thefile + " elf_type: " + elf_type, LEVEL_1)
if elf_type == "EXEC":
# Calculate absolute address for EXEC type binary, which is then fed to addr2line
base_addr = get_elf_load_base_addr(thefile)
verbose(
"The LOAD base address or the rounded down entry address is: " +
hex(base_addr),
LEVEL_1,
)
offset = hex(int(offset, 0) + base_addr)
# print ("the absolute address is: " + offset)
addr2line_prog = get_config_value("addr2line")
if not addr2line_prog:
addr2line_prog = "addr2line"
cmd = addr2line_prog + " -f -i -e " + cmd_quote(
thefile) + " " + offset + " || true"
verbose("The traceback decode cmd is: " + cmd, LEVEL_1)
output = subprocess.check_output(cmd,
shell=True,
universal_newlines=True,
stderr=open(os.devnull, "w"))
return output
def get_elf_class(afile):
"""
Retrieve ELF Class of afile.
:param afile: a file
:returns the ELF Class of the file
"""
if afile in g_elf_class_db:
return g_elf_class_db[afile]
cmd = "readelf -h " + cmd_quote(afile) + ' | grep "Class:" || true'
output = get_shell_cmd_output(cmd)
tokens = output.split(":")
elf_class = tokens[1].strip()
verbose(afile + " ELF Class is " + elf_class, LEVEL_2)
g_elf_class_db[afile] = elf_class
return elf_class
def get_elf_type(afile):
"""
Retrieve ELF type of afile.
:param afile: a file
:returns the ELF type of the file
"""
if afile in g_elf_type_db:
return g_elf_type_db[afile]
cmd = "readelf -h " + cmd_quote(afile) + ' | grep "Type:" || true'
output = get_shell_cmd_output(cmd)
tokens = output.split(":")
elf_type = tokens[1].split()[0]
# verbose(afile + " ELF Type is " + elf_type, LEVEL_2)
g_elf_type_db[afile] = elf_type
return elf_type
def get_entry_addr(afile):
"""
Retrieve ELF Entry point address for a file
:param afile: a file
:returns the ELF Entry point address of the file
"""
cmd = "readelf -h " + cmd_quote(
afile) + ' | grep "Entry point address:" || true'
output = get_shell_cmd_output(cmd)
if output:
tokens = output.split(":")
entry_addr = tokens[1].split()[0]
# verbose(afile + " entry point address is: " + entry_addr, LEVEL_2)
return int(entry_addr, 0)
return 0
def parse(self):
"""
Parse the Alignak configuration file
Exit the script if some errors are encountered.
:return: None
"""
config = ConfigParser.ConfigParser()
config.read(self.configuration_file)
if config._sections == {}:
print("Bad formatted configuration file: %s " %
self.configuration_file)
sys.exit(2)
try:
for section in config.sections():
if self.verbose:
print("Section: %s" % section)
for (key, value) in config.items(section):
inner_property = "%s.%s" % (section, key)
# Set object property
setattr(self, inner_property, value)
# Set environment variable
os.environ[inner_property] = value
if self.verbose:
print(" %s = %s" % (inner_property, value))
if self.export:
# Allowed shell variables may only contain: [a-zA-z0-9_]
inner_property = re.sub('[^0-9a-zA-Z]+', '_',
inner_property)
inner_property = inner_property.upper()
print("export %s=%s" %
(inner_property, cmd_quote(value)))
except ConfigParser.InterpolationMissingOptionError as err:
err = str(err)
wrong_variable = err.split('\n')[3].split(':')[1].strip()
print("Incorrect or missing variable '%s' in config file : %s" %
(wrong_variable, self.configuration_file))
sys.exit(3)
if self.verbose:
print("Configuration file parsed correctly")
def get_all_shlib_paths_via_ldd(afile):
"""
Get all the shared library paths via the ldd command for a file.
:param afile: a file
:returns a dictionary that contains all shlib => path mappings.
"""
cmd = "ldd " + cmd_quote(afile) + " || true"
ldd_output = get_shell_cmd_output(cmd)
verbose("ldd command: " + cmd + " And output is: " + ldd_output, LEVEL_3)
lines = ldd_output.splitlines()
shlib_paths = dict()
for line in lines:
if "=>" not in line:
continue
tokens = line.split(" => ")
shlib = tokens[0].strip()
path = tokens[1].split()[0]
if os.path.exists(path):
shlib_paths[shlib] = path
return shlib_paths
def get_elf_load_alignment(afile):
"""
Get the alignment size of LOAD segment for afile
:param afile: a file
:returns the alignment size, the default is 2**16=64KB
"""
default_load_alignment = 2**16
objdump_prog = get_config_value("objdump")
if not objdump_prog:
objdump_prog = "objdump"
cmd = objdump_prog + " -p " + cmd_quote(
afile) + " | grep align | grep LOAD || true"
output = get_shell_cmd_output(cmd)
lines = output.splitlines()
if not lines:
return default_load_alignment
line = lines[0]
tokens = line.split(" align ")
if len(tokens) < 2:
return default_load_alignment
alignment = tokens[1]
verbose(afile + " LOAD alignment is: " + alignment, LEVEL_1)
return eval(alignment)
def parse(self):
# pylint: disable=too-many-branches
"""
Check if some extra configuration files are existing in an `alignak.d` sub directory
near the found configuration file.
Parse the Alignak configuration file(s)
Exit the script if some errors are encountered.
:return: True/False
"""
# Search if some ini files existe in an alignak.d sub-directory
sub_directory = 'alignak.d'
dir_name = os.path.dirname(self.configuration_file)
dir_name = os.path.join(dir_name, sub_directory)
self.cfg_files = [self.configuration_file]
if os.path.exists(dir_name):
for root, _, walk_files in os.walk(dir_name, followlinks=True):
for found_file in walk_files:
if not re.search(r"\.ini$", found_file):
continue
self.cfg_files.append(os.path.join(root, found_file))
print("Loading configuration files: %s " % self.cfg_files)
# Read and parse the found configuration files
self.config = configparser.ConfigParser()
try:
self.config.read(self.cfg_files)
if self.config._sections == {}:
print("* bad formatted configuration file: %s " %
self.configuration_file)
if self.embedded:
raise ValueError
sys.exit(2)
for section in self.config.sections():
if self.verbose:
print("- section: %s" % section)
for (key, value) in self.config.items(section):
inner_property = "%s.%s" % (section, key)
# Set object property
setattr(self, inner_property, value)
# Set environment variable
os.environ[inner_property] = value
if self.verbose:
print(" %s = %s" % (inner_property, value))
if self.export:
# Allowed shell variables may only contain: [a-zA-z0-9_]
inner_property = re.sub('[^0-9a-zA-Z]+', '_',
inner_property)
inner_property = inner_property.upper()
print("export %s=%s" %
(inner_property, cmd_quote(value)))
except configparser.ParsingError as exp:
print("* parsing error in config file : %s\n%s" %
(self.configuration_file, exp.message))
if self.embedded:
return False
sys.exit(3)
except configparser.InterpolationMissingOptionError as exp:
print("* incorrect or missing variable: %s" % str(exp))
if self.embedded:
return False
sys.exit(3)
if self.verbose:
print("Configuration file parsed correctly")
return True
def parse(self):
# pylint: disable=too-many-branches
"""
Check if some extra configuration files are existing in an `alignak.d` sub directory
near the found configuration file.
Parse the Alignak configuration file(s)
Exit the script if some errors are encountered.
:return: True/False
"""
# Search if some ini files existe in an alignak.d sub-directory
sub_directory = 'alignak.d'
dir_name = os.path.dirname(self.configuration_file)
dir_name = os.path.join(dir_name, sub_directory)
self.cfg_files = [self.configuration_file]
if os.path.exists(dir_name):
for root, _, walk_files in os.walk(dir_name, followlinks=True):
for found_file in walk_files:
if not re.search(r"\.ini$", found_file):
continue
self.cfg_files.append(os.path.join(root, found_file))
print("Loading configuration files: %s " % self.cfg_files)
# Read and parse the found configuration files
self.config = configparser.ConfigParser()
try:
self.config.read(self.cfg_files)
if self.config._sections == {}:
print("* bad formatted configuration file: %s " % self.configuration_file)
if self.embedded:
raise ValueError
sys.exit(2)
for section in self.config.sections():
if self.verbose:
print("- section: %s" % section)
for (key, value) in self.config.items(section):
inner_property = "%s.%s" % (section, key)
# Set object property
setattr(self, inner_property, value)
# Set environment variable
os.environ[inner_property] = value
if self.verbose:
print(" %s = %s" % (inner_property, value))
if self.export:
# Allowed shell variables may only contain: [a-zA-z0-9_]
inner_property = re.sub('[^0-9a-zA-Z]+', '_', inner_property)
inner_property = inner_property.upper()
print("export %s=%s" % (inner_property, cmd_quote(value)))
except configparser.ParsingError as exp:
print("* parsing error in config file : %s\n%s"
% (self.configuration_file, exp.message))
if self.embedded:
return False
sys.exit(3)
except configparser.InterpolationMissingOptionError as exp:
print("* incorrect or missing variable: %s" % str(exp))
if self.embedded:
return False
sys.exit(3)
if self.verbose:
print("Configuration file parsed correctly")
return True
