mirror of
https://github.com/valitydev/osquery-1.git
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363 lines
12 KiB
Python
Executable File
363 lines
12 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (c) 2014-present, Facebook, Inc.
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# All rights reserved.
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#
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# This source code is licensed under the BSD-style license found in the
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# LICENSE file in the root directory of this source tree. An additional grant
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# of patent rights can be found in the PATENTS file in the same directory.
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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from __future__ import unicode_literals
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import json
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import os
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import subprocess
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import sys
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import time
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try:
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import argparse
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except ImportError:
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print("Cannot import argparse.")
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exit(1)
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# Import the testing utils
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sys.path.append(os.path.dirname(os.path.realpath(__file__)) + "/tests/")
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import utils
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KB = 1024 * 1024
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RANGES = {
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"colors": (utils.blue, utils.green, utils.yellow, utils.red),
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"utilization": (8, 20, 50),
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"cpu_time": (0.4, 1, 10),
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"memory": (8 * KB, 12 * KB, 24 * KB),
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"fds": (10, 20, 50),
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"duration": (0.8, 1, 3),
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}
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def check_leaks_linux(shell, query, count=1, supp_file=None):
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"""Run valgrind using the shell and a query, parse leak reports."""
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suppressions = "" if supp_file is None else "--suppressions=%s" % supp_file
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cmd = "valgrind --tool=memcheck %s %s --iterations=%d --query=\"%s\"" % (
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suppressions, shell, count, query)
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proc = subprocess.Popen(
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cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE
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)
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_, stderr = proc.communicate()
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summary = {
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"definitely": None,
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"indirectly": None,
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"possibly": None,
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}
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if args.verbose:
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print(stderr)
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for line in stderr.split("\n"):
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for key in summary:
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if line.find(key) >= 0:
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summary[key] = line.split(":")[1].strip()
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return summary
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def check_leaks_darwin(shell, query, count=1):
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# Run the shell with a --delay flag such that leaks can attach before exit.
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proc = subprocess.Popen(
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[shell, "--profile", str(count), "--profile_delay", "1", query],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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leak_checks = None
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while proc.poll() is None:
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# Continue to run leaks until the monitored shell exits.
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leaks = subprocess.Popen(
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["leaks", "%s" % proc.pid],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE
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)
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stdout, _ = leaks.communicate()
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if args.verbose:
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print(stdout)
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try:
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for line in stdout.split("\n"):
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if line.find("total leaked bytes") >= 0:
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leak_checks = line.split(":")[1].strip()
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except:
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print("Encountered exception while running leaks:")
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print(stdout)
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return {"definitely": leak_checks}
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def check_leaks(shell, query, count=1, supp_file=None):
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if utils.platform() == "darwin":
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return check_leaks_darwin(shell, query, count=count)
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else:
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return check_leaks_linux(shell, query, count=count, supp_file=supp_file)
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def profile_leaks(shell, queries, count=1, rounds=1, supp_file=None):
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report = {}
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for name, query in queries.iteritems():
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print("Analyzing leaks in query: %s" % query)
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# Apply count (optionally run the query several times).
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summary = check_leaks(shell, query, count, supp_file)
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display = []
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for key in summary:
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output = summary[key]
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if output is not None and output[0] != "0":
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# Add some fun colored output if leaking.
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if key == "definitely":
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output = utils.red(output)
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report[name] = "LEAKING"
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if key == "indirectly":
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output = utils.yellow(output)
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report[name] = "WARNING"
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else:
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report[name] = "SAFE"
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display.append("%s: %s" % (key, output))
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print(" %s" % "; ".join(display))
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return report
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def run_query(shell, query, timeout=0, count=1):
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"""Execute the osqueryi shell in profile mode with a setup/teardown delay."""
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start_time = time.time()
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return utils.profile_cmd([
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shell,
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"--profile",
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str(count),
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"--profile_delay",
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"1",
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query
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], timeout=timeout, count=count)
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def summary_line(name, result):
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if not args.n:
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for key, v in result.iteritems():
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print("%s" % (
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RANGES["colors"][v[0]]("%s:%s" % (
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key[0].upper(), v[0]))),
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end="")
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print(" ", end="")
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print("%s:" % name, end=" ")
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for key, v in result.iteritems():
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print("%s: %s" % (key, v[1]), end=" ")
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print("")
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def summary(results, display=False):
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"""Map the results to simple thresholds."""
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def rank(value, ranges):
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for i, r in enumerate(ranges):
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if value < r:
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return i
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return len(ranges)
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summary_results = {}
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for name, result in results.iteritems():
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failed = "exit" in result and result["exit"] > 0
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summary_result = {}
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for key in RANGES:
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if key == "colors":
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continue
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if key not in result:
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continue
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if failed:
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summary_result[key] = (len(RANGES["colors"]) - 1, -1)
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else:
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summary_result[key] = (rank(result[key], RANGES[key]),
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result[key])
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if display and not args.check:
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summary_line(name, summary_result)
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summary_results[name] = summary_result
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return summary_results
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def profile(shell, queries, timeout=0, count=1, rounds=1):
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report = {}
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for name, query in queries.iteritems():
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forced = True if name == "force" else False
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if not forced:
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print("Profiling query: %s" % query)
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results = {}
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for i in range(rounds):
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if forced:
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result = utils.profile_cmd(shell, shell=True,
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timeout=timeout, count=count)
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else:
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result = run_query(shell, query, timeout=timeout, count=count)
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summary(
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{"%s (%d/%d)" % (name, i + 1, rounds): result}, display=True)
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# Store each result round to return an average.
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for k, v in result.iteritems():
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results[k] = results.get(k, [])
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results[k].append(v)
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average_results = {}
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for k in results:
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average_results[k] = sum(results[k]) / len(results[k])
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report[name] = average_results
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if rounds > 1:
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summary({"%s avg" % name: report[name]}, display=True)
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return report
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def compare(profile1, profile2):
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"""Compare two jSON profile outputs."""
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for table in profile1:
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if table not in profile2:
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# No comparison possible
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continue
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summary_line(table, profile1[table])
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summary_line(table, profile2[table])
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def regress_check(profile1, profile2):
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regressed = False
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for table in profile1:
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if table not in profile2:
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continue
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for measure in profile1[table]:
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if profile2[table][measure][0] > profile1[table][measure][0]:
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print("%s %s has regressed (%s->%s)!" % (table, measure,
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profile1[table][measure][0], profile2[table][measure][0]))
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regressed = True
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if not regressed:
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print("No regressions!")
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return 0
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return 1
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description=(
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"Profile osquery, individual tables, "
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"or a set of osqueryd config queries."
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))
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parser.add_argument(
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"-n", action="store_true", default=False,
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help="Do not output colored ranks."
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)
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parser.add_argument(
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"--verbose", action="store_true", default=False, help="Be verbose.")
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parser.add_argument(
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"--leaks", default=False, action="store_true",
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help="Check for memory leaks instead of performance."
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)
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group = parser.add_argument_group("Query Options:")
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group.add_argument(
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"--restrict", metavar="LIST", default="",
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help="Limit to a list of comma-separated tables."
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)
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group.add_argument(
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"--tables", metavar="PATH", default="./specs",
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help="Path to the osquery table specs."
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)
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group.add_argument(
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"--config", metavar="FILE", default=None,
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help="Use scheduled queries from a config."
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)
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group.add_argument(
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"--query", metavar="STRING", default=None,
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help="Profile a single query."
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)
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group = parser.add_argument_group("Run Options:")
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group.add_argument(
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"--timeout", metavar="N", default=0, type=int,
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help="Max seconds a query may run --count times."
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)
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group.add_argument(
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"--count", metavar="N", default=1, type=int,
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help="Run the query N times serially."
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)
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group.add_argument(
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"--rounds", metavar="N", default=1, type=int,
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help="Run the profile for N rounds and use the average."
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)
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group.add_argument(
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"--shell", metavar="PATH", default="./build/%s/osquery/osqueryi" % (
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utils.platform()),
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help="Path to osqueryi shell (./build/<sys>/osquery/osqueryi)."
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)
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group.add_argument(
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"--force", action="store_true", default=False,
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help="Force run the target of shell",
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)
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group = parser.add_argument_group("Performance Options:")
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group.add_argument(
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"--output", metavar="FILE", default=None,
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help="Write JSON performance output to file."
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)
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group.add_argument(
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"--check", metavar="OLD_OUTPUT", nargs=1,
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help="Check regressions using an existing output."
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)
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group.add_argument(
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"--compare", metavar="FILE", nargs=2,
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help="Compare existing performance outputs (old, new)."
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)
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group = parser.add_argument_group("Memory Options:")
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group.add_argument(
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"--suppressions", metavar="SUPP", default="./tools/tests/osquery.supp",
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help="Add a suppressions files to memory leak checking (linux only)."
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)
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args = parser.parse_args()
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if args.compare:
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with open(args.compare[0]) as fh:
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profile1 = json.loads(fh.read())
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with open(args.compare[1]) as fh:
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profile2 = json.loads(fh.read())
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compare(profile1, profile2)
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exit(0)
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if args.check:
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with open(args.check[0]) as fh:
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profile1 = json.loads(fh.read())
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if not args.force and not os.path.exists(args.shell):
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print("Cannot find --shell: %s" % (args.shell))
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exit(1)
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if args.config is None and not os.path.exists(args.tables):
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print("Cannot find --tables: %s" % (args.tables))
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exit(1)
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queries = {}
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if args.config is not None:
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if not os.path.exists(args.config):
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print("Cannot find --config: %s" % (args.config))
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exit(1)
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queries = utils.queries_from_config(args.config)
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elif args.query is not None:
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queries["manual"] = args.query
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elif args.force:
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queries["force"] = True
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else:
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queries = utils.queries_from_tables(args.tables, args.restrict)
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if args.leaks:
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results = profile_leaks(
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args.shell, queries, count=args.count,
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rounds=args.rounds, supp_file=args.suppressions
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)
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else:
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# Start the profiling!
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results = profile(
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args.shell, queries,
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timeout=args.timeout, count=args.count, rounds=args.rounds
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)
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# Only apply checking/regressions to performance, not leaks.
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if args.check:
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exit(regress_check(profile1, summary(results)))
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if args.output is not None:
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with open(args.output, "w") as fh:
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if args.leaks:
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# Leaks report does not need a summary view.
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fh.write(json.dumps(results, indent=1))
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else:
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fh.write(json.dumps(summary(results), indent=1))
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print("Wrote output summary: %s" % args.output)
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