codeql/python/extractor/python_tracer.py at main · trailofbits/codeql · GitHub

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#!/usr/bin/env python

#This file needs to be able to handle all versions of Python we are likely to encounter

#Which is probably 2.6 and upwards

'''This module sets up sys.path from the environment

and runs the populator when called from semmle tools such as buildSnapshot.'''

import sys

import os

# The constant is put here instead of make_zips.py, since make_zips.py is not present in

# the distributed extractor-python code

def getzipfilename():

return 'python3src.zip'

def load_library():

try:

tools = os.environ['ODASA_TOOLS']

except KeyError:

try:

tools = os.path.join(os.environ['SEMMLE_DIST'], "tools")

except KeyError:

tools = sys.path[0]

try:

zippath = os.path.join(tools, getzipfilename())

sys.path = [ zippath ] + sys.path

except Exception:

#Failed to find tools. Error is reported below

zippath = tools

try:

import semmle.populator

except ImportError as ex:

print("FATAL ERROR: ")

print(ex)

if tools is not None:

if not os.path.exists(os.path.join(tools, getzipfilename())):

sys.stderr.write("No tracer library found in " + tools + "\n")

else:

sys.stderr.write("Unable to load tracer library at %s:\n" % zippath)

import traceback

traceback.print_exc(file=sys.stderr)

else:

print(sys.path)

sys.stderr.write("Cannot find Semmle tools\n")

sys.exit(2)

if __name__ == "__main__":

original_path = sys.path

load_library()

import semmle.populator

semmle.populator.main(original_path)

codeql/python/extractor/python_tracer.py at main · trailofbits/codeql · GitHub

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