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# -*- coding: utf-8 -*- # Copyright (c) 2009, Giampaolo Rodola'. All rights reserved. # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. """ Test utilities. """ from __future__ import print_function import atexit import contextlib import ctypes import errno import functools import os import random import re import select import shutil import socket import stat import subprocess import sys import tempfile import textwrap import threading import time import traceback import warnings from socket import AF_INET from socket import AF_INET6 from socket import SOCK_DGRAM from socket import SOCK_STREAM import psutil from psutil import OSX from psutil import POSIX from psutil import SUNOS from psutil import WINDOWS from psutil._common import supports_ipv6 from psutil._compat import PY3 from psutil._compat import u from psutil._compat import unicode from psutil._compat import which if sys.version_info < (2, 7): import unittest2 as unittest # requires "pip install unittest2" else: import unittest try: from unittest import mock # py3 except ImportError: import mock # NOQA - requires "pip install mock" if sys.version_info >= (3, 4): import enum else: enum = None __all__ = [ # constants 'APPVEYOR', 'DEVNULL', 'GLOBAL_TIMEOUT', 'MEMORY_TOLERANCE', 'NO_RETRIES', 'PYPY', 'PYTHON_EXE', 'ROOT_DIR', 'SCRIPTS_DIR', 'TESTFILE_PREFIX', 'TESTFN', 'TESTFN_UNICODE', 'TOX', 'TRAVIS', 'VALID_PROC_STATUSES', 'VERBOSITY', "HAS_CPU_AFFINITY", "HAS_CPU_FREQ", "HAS_ENVIRON", "HAS_PROC_IO_COUNTERS", "HAS_IONICE", "HAS_MEMORY_MAPS", "HAS_PROC_CPU_NUM", "HAS_RLIMIT", "HAS_SENSORS_BATTERY", "HAS_BATTERY", "HAS_SENSORS_FANS", "HAS_SENSORS_TEMPERATURES", "HAS_MEMORY_FULL_INFO", # subprocesses 'pyrun', 'reap_children', 'get_test_subprocess', 'create_zombie_proc', 'create_proc_children_pair', # threads 'ThreadTask' # test utils 'unittest', 'skip_on_access_denied', 'skip_on_not_implemented', 'retry_before_failing', 'run_test_module_by_name', 'get_suite', 'run_suite', # install utils 'install_pip', 'install_test_deps', # fs utils 'chdir', 'safe_rmpath', 'create_exe', 'decode_path', 'encode_path', 'unique_filename', # os 'get_winver', 'get_kernel_version', # sync primitives 'call_until', 'wait_for_pid', 'wait_for_file', # network 'check_connection_ntuple', 'check_net_address', 'get_free_port', 'unix_socket_path', 'bind_socket', 'bind_unix_socket', 'tcp_socketpair', 'unix_socketpair', 'create_sockets', # compat 'reload_module', 'import_module_by_path', # others 'warn', 'copyload_shared_lib', 'is_namedtuple', ] # =================================================================== # --- constants # =================================================================== # --- platforms TOX = os.getenv('TOX') or '' in ('1', 'true') PYPY = '__pypy__' in sys.builtin_module_names WIN_VISTA = (6, 0, 0) if WINDOWS else None # whether we're running this test suite on Travis (https://travis-ci.org/) TRAVIS = bool(os.environ.get('TRAVIS')) # whether we're running this test suite on Appveyor for Windows # (http://www.appveyor.com/) APPVEYOR = bool(os.environ.get('APPVEYOR')) # --- configurable defaults # how many times retry_before_failing() decorator will retry NO_RETRIES = 10 # bytes tolerance for system-wide memory related tests MEMORY_TOLERANCE = 500 * 1024 # 500KB # the timeout used in functions which have to wait GLOBAL_TIMEOUT = 3 # test output verbosity VERBOSITY = 1 if os.getenv('SILENT') or TOX else 2 # be more tolerant if we're on travis / appveyor in order to avoid # false positives if TRAVIS or APPVEYOR: NO_RETRIES *= 3 GLOBAL_TIMEOUT *= 3 # --- files TESTFILE_PREFIX = '$testfn' TESTFN = os.path.join(os.path.realpath(os.getcwd()), TESTFILE_PREFIX) _TESTFN = TESTFN + '-internal' TESTFN_UNICODE = TESTFN + u("-ƒőő") ASCII_FS = sys.getfilesystemencoding().lower() in ('ascii', 'us-ascii') # --- paths ROOT_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..')) SCRIPTS_DIR = os.path.join(ROOT_DIR, 'scripts') HERE = os.path.abspath(os.path.dirname(__file__)) # --- support HAS_CPU_AFFINITY = hasattr(psutil.Process, "cpu_affinity") HAS_CPU_FREQ = hasattr(psutil, "cpu_freq") HAS_CONNECTIONS_UNIX = POSIX and not SUNOS HAS_ENVIRON = hasattr(psutil.Process, "environ") HAS_PROC_IO_COUNTERS = hasattr(psutil.Process, "io_counters") HAS_IONICE = hasattr(psutil.Process, "ionice") HAS_MEMORY_FULL_INFO = 'uss' in psutil.Process().memory_full_info()._fields HAS_MEMORY_MAPS = hasattr(psutil.Process, "memory_maps") HAS_PROC_CPU_NUM = hasattr(psutil.Process, "cpu_num") HAS_RLIMIT = hasattr(psutil.Process, "rlimit") HAS_THREADS = hasattr(psutil.Process, "threads") HAS_SENSORS_BATTERY = hasattr(psutil, "sensors_battery") HAS_BATTERY = HAS_SENSORS_BATTERY and psutil.sensors_battery() HAS_SENSORS_FANS = hasattr(psutil, "sensors_fans") HAS_SENSORS_TEMPERATURES = hasattr(psutil, "sensors_temperatures") # --- misc def _get_py_exe(): def attempt(exe): try: subprocess.check_call( [exe, "-V"], stdout=subprocess.PIPE, stderr=subprocess.PIPE) except Exception: return None else: return exe if OSX: exe = \ attempt(sys.executable) or \ attempt(os.path.realpath(sys.executable)) or \ attempt(which("python%s.%s" % sys.version_info[:2])) or \ attempt(psutil.Process().exe()) if not exe: raise ValueError("can't find python exe real abspath") return exe else: exe = os.path.realpath(sys.executable) assert os.path.exists(exe), exe return exe PYTHON_EXE = _get_py_exe() DEVNULL = open(os.devnull, 'r+') VALID_PROC_STATUSES = [getattr(psutil, x) for x in dir(psutil) if x.startswith('STATUS_')] AF_UNIX = getattr(socket, "AF_UNIX", object()) SOCK_SEQPACKET = getattr(socket, "SOCK_SEQPACKET", object()) _subprocesses_started = set() _pids_started = set() _testfiles_created = set() @atexit.register def _cleanup_files(): DEVNULL.close() for name in os.listdir(u('.')): if isinstance(name, unicode): prefix = u(TESTFILE_PREFIX) else: prefix = TESTFILE_PREFIX if name.startswith(prefix): try: safe_rmpath(name) except Exception: traceback.print_exc() for path in _testfiles_created: try: safe_rmpath(path) except Exception: traceback.print_exc() # this is executed first @atexit.register def _cleanup_procs(): reap_children(recursive=True) # =================================================================== # --- threads # =================================================================== class ThreadTask(threading.Thread): """A thread task which does nothing expect staying alive.""" def __init__(self): threading.Thread.__init__(self) self._running = False self._interval = 0.001 self._flag = threading.Event() def __repr__(self): name = self.__class__.__name__ return '<%s running=%s at %#x>' % (name, self._running, id(self)) def __enter__(self): self.start() return self def __exit__(self, *args, **kwargs): self.stop() def start(self): """Start thread and keep it running until an explicit stop() request. Polls for shutdown every 'timeout' seconds. """ if self._running: raise ValueError("already started") threading.Thread.start(self) self._flag.wait() def run(self): self._running = True self._flag.set() while self._running: time.sleep(self._interval) def stop(self): """Stop thread execution and and waits until it is stopped.""" if not self._running: raise ValueError("already stopped") self._running = False self.join() # =================================================================== # --- subprocesses # =================================================================== def _cleanup_on_err(fun): @functools.wraps(fun) def wrapper(*args, **kwargs): try: return fun(*args, **kwargs) except Exception: reap_children() raise return wrapper @_cleanup_on_err def get_test_subprocess(cmd=None, **kwds): """Creates a python subprocess which does nothing for 60 secs and return it as subprocess.Popen instance. If "cmd" is specified that is used instead of python. By default stdin and stdout are redirected to /dev/null. It also attemps to make sure the process is in a reasonably initialized state. The process is registered for cleanup on reap_children(). """ kwds.setdefault("stdin", DEVNULL) kwds.setdefault("stdout", DEVNULL) kwds.setdefault("cwd", os.getcwd()) kwds.setdefault("env", os.environ) if WINDOWS: # Prevents the subprocess to open error dialogs. kwds.setdefault("creationflags", 0x8000000) # CREATE_NO_WINDOW if cmd is None: safe_rmpath(_TESTFN) pyline = "from time import sleep;" \ "open(r'%s', 'w').close();" \ "sleep(60);" % _TESTFN cmd = [PYTHON_EXE, "-c", pyline] sproc = subprocess.Popen(cmd, **kwds) _subprocesses_started.add(sproc) wait_for_file(_TESTFN, delete=True, empty=True) else: sproc = subprocess.Popen(cmd, **kwds) _subprocesses_started.add(sproc) wait_for_pid(sproc.pid) return sproc @_cleanup_on_err def create_proc_children_pair(): """Create a subprocess which creates another one as in: A (us) -> B (child) -> C (grandchild). Return a (child, grandchild) tuple. The 2 processes are fully initialized and will live for 60 secs and are registered for cleanup on reap_children(). """ _TESTFN2 = os.path.basename(_TESTFN) + '2' # need to be relative s = textwrap.dedent("""\ import subprocess, os, sys, time s = "import os, time;" s += "f = open('%s', 'w');" s += "f.write(str(os.getpid()));" s += "f.close();" s += "time.sleep(60);" subprocess.Popen(['%s', '-c', s]) time.sleep(60) """ % (_TESTFN2, PYTHON_EXE)) # On Windows if we create a subprocess with CREATE_NO_WINDOW flag # set (which is the default) a "conhost.exe" extra process will be # spawned as a child. We don't want that. if WINDOWS: subp = pyrun(s, creationflags=0) else: subp = pyrun(s) child1 = psutil.Process(subp.pid) data = wait_for_file(_TESTFN2, delete=False, empty=False) os.remove(_TESTFN2) child2_pid = int(data) _pids_started.add(child2_pid) child2 = psutil.Process(child2_pid) return (child1, child2) def create_zombie_proc(): """Create a zombie process and return its PID.""" assert psutil.POSIX unix_file = tempfile.mktemp(prefix=TESTFILE_PREFIX) if OSX else TESTFN src = textwrap.dedent("""\ import os, sys, time, socket, contextlib child_pid = os.fork() if child_pid > 0: time.sleep(3000) else: # this is the zombie process s = socket.socket(socket.AF_UNIX) with contextlib.closing(s): s.connect('%s') if sys.version_info < (3, ): pid = str(os.getpid()) else: pid = bytes(str(os.getpid()), 'ascii') s.sendall(pid) """ % unix_file) with contextlib.closing(socket.socket(socket.AF_UNIX)) as sock: sock.settimeout(GLOBAL_TIMEOUT) sock.bind(unix_file) sock.listen(1) pyrun(src) conn, _ = sock.accept() try: select.select([conn.fileno()], [], [], GLOBAL_TIMEOUT) zpid = int(conn.recv(1024)) _pids_started.add(zpid) zproc = psutil.Process(zpid) call_until(lambda: zproc.status(), "ret == psutil.STATUS_ZOMBIE") return zpid finally: conn.close() @_cleanup_on_err def pyrun(src, **kwds): """Run python 'src' code string in a separate interpreter. Returns a subprocess.Popen instance. """ kwds.setdefault("stdout", None) kwds.setdefault("stderr", None) with tempfile.NamedTemporaryFile( prefix=TESTFILE_PREFIX, mode="wt", delete=False) as f: _testfiles_created.add(f.name) f.write(src) f.flush() subp = get_test_subprocess([PYTHON_EXE, f.name], **kwds) wait_for_pid(subp.pid) return subp @_cleanup_on_err def sh(cmd, **kwds): """run cmd in a subprocess and return its output. raises RuntimeError on error. """ shell = True if isinstance(cmd, (str, unicode)) else False # Prevents subprocess to open error dialogs in case of error. flags = 0x8000000 if WINDOWS and shell else 0 kwds.setdefault("shell", shell) kwds.setdefault("stdout", subprocess.PIPE) kwds.setdefault("stderr", subprocess.PIPE) kwds.setdefault("universal_newlines", True) kwds.setdefault("creationflags", flags) p = subprocess.Popen(cmd, **kwds) _subprocesses_started.add(p) stdout, stderr = p.communicate() if p.returncode != 0: raise RuntimeError(stderr) if stderr: warn(stderr) if stdout.endswith('\n'): stdout = stdout[:-1] return stdout def reap_children(recursive=False): """Terminate and wait() any subprocess started by this test suite and ensure that no zombies stick around to hog resources and create problems when looking for refleaks. If resursive is True it also tries to terminate and wait() all grandchildren started by this process. """ # This is here to make sure wait_procs() behaves properly and # investigate: # https://ci.appveyor.com/project/giampaolo/psutil/build/job/ # jiq2cgd6stsbtn60 def assert_gone(pid): assert not psutil.pid_exists(pid), pid assert pid not in psutil.pids(), pid try: p = psutil.Process(pid) assert not p.is_running(), pid except psutil.NoSuchProcess: pass else: assert 0, "pid %s is not gone" % pid # Get the children here, before terminating the children sub # processes as we don't want to lose the intermediate reference # in case of grandchildren. if recursive: children = set(psutil.Process().children(recursive=True)) else: children = set() # Terminate subprocess.Popen instances "cleanly" by closing their # fds and wiat()ing for them in order to avoid zombies. while _subprocesses_started: subp = _subprocesses_started.pop() _pids_started.add(subp.pid) try: subp.terminate() except OSError as err: if err.errno != errno.ESRCH: raise if subp.stdout: subp.stdout.close() if subp.stderr: subp.stderr.close() try: # Flushing a BufferedWriter may raise an error. if subp.stdin: subp.stdin.close() finally: # Wait for the process to terminate, to avoid zombies. try: subp.wait() except OSError as err: if err.errno != errno.ECHILD: raise # Terminate started pids. while _pids_started: pid = _pids_started.pop() try: p = psutil.Process(pid) except psutil.NoSuchProcess: assert_gone(pid) else: children.add(p) # Terminate children. if children: for p in children: try: p.terminate() except psutil.NoSuchProcess: pass gone, alive = psutil.wait_procs(children, timeout=GLOBAL_TIMEOUT) for p in alive: warn("couldn't terminate process %r; attempting kill()" % p) try: p.kill() except psutil.NoSuchProcess: pass gone, alive = psutil.wait_procs(alive, timeout=GLOBAL_TIMEOUT) if alive: for p in alive: warn("process %r survived kill()" % p) for p in children: assert_gone(p.pid) # =================================================================== # --- OS # =================================================================== def get_kernel_version(): """Return a tuple such as (2, 6, 36).""" if not POSIX: raise NotImplementedError("not POSIX") s = "" uname = os.uname()[2] for c in uname: if c.isdigit() or c == '.': s += c else: break if not s: raise ValueError("can't parse %r" % uname) minor = 0 micro = 0 nums = s.split('.') major = int(nums[0]) if len(nums) >= 2: minor = int(nums[1]) if len(nums) >= 3: micro = int(nums[2]) return (major, minor, micro) def get_winver(): if not WINDOWS: raise NotImplementedError("not WINDOWS") wv = sys.getwindowsversion() if hasattr(wv, 'service_pack_major'): # python >= 2.7 sp = wv.service_pack_major or 0 else: r = re.search(r"\s\d$", wv[4]) if r: sp = int(r.group(0)) else: sp = 0 return (wv[0], wv[1], sp) # =================================================================== # --- sync primitives # =================================================================== class retry(object): """A retry decorator.""" def __init__(self, exception=Exception, timeout=None, retries=None, interval=0.001, logfun=lambda s: print(s, file=sys.stderr), ): if timeout and retries: raise ValueError("timeout and retries args are mutually exclusive") self.exception = exception self.timeout = timeout self.retries = retries self.interval = interval self.logfun = logfun def __iter__(self): if self.timeout: stop_at = time.time() + self.timeout while time.time() < stop_at: yield elif self.retries: for _ in range(self.retries): yield else: while True: yield def sleep(self): if self.interval is not None: time.sleep(self.interval) def __call__(self, fun): @functools.wraps(fun) def wrapper(*args, **kwargs): exc = None for _ in self: try: return fun(*args, **kwargs) except self.exception as _: exc = _ if self.logfun is not None: self.logfun(exc) self.sleep() continue if PY3: raise exc else: raise # This way the user of the decorated function can change config # parameters. wrapper.decorator = self return wrapper @retry(exception=psutil.NoSuchProcess, logfun=None, timeout=GLOBAL_TIMEOUT, interval=0.001) def wait_for_pid(pid): """Wait for pid to show up in the process list then return. Used in the test suite to give time the sub process to initialize. """ psutil.Process(pid) if WINDOWS: # give it some more time to allow better initialization time.sleep(0.01) @retry(exception=(EnvironmentError, AssertionError), logfun=None, timeout=GLOBAL_TIMEOUT, interval=0.001) def wait_for_file(fname, delete=True, empty=False): """Wait for a file to be written on disk with some content.""" with open(fname, "rb") as f: data = f.read() if not empty: assert data if delete: os.remove(fname) return data @retry(exception=AssertionError, logfun=None, timeout=GLOBAL_TIMEOUT, interval=0.001) def call_until(fun, expr): """Keep calling function for timeout secs and exit if eval() expression is True. """ ret = fun() assert eval(expr) return ret # =================================================================== # --- fs # =================================================================== def safe_rmpath(path): "Convenience function for removing temporary test files or dirs" try: st = os.stat(path) if stat.S_ISDIR(st.st_mode): os.rmdir(path) else: os.remove(path) except OSError as err: if err.errno != errno.ENOENT: raise def safe_mkdir(dir): "Convenience function for creating a directory" try: os.mkdir(dir) except OSError as err: if err.errno != errno.EEXIST: raise @contextlib.contextmanager def chdir(dirname): "Context manager which temporarily changes the current directory." curdir = os.getcwd() try: os.chdir(dirname) yield finally: os.chdir(curdir) def create_exe(outpath, c_code=None): """Creates an executable file in the given location.""" assert not os.path.exists(outpath), outpath if c_code: if not which("gcc"): raise ValueError("gcc is not installed") if isinstance(c_code, bool): # c_code is True c_code = textwrap.dedent( """ #include <unistd.h> int main() { pause(); return 1; } """) assert isinstance(c_code, str), c_code with tempfile.NamedTemporaryFile( suffix='.c', delete=False, mode='wt') as f: f.write(c_code) try: subprocess.check_call(["gcc", f.name, "-o", outpath]) finally: safe_rmpath(f.name) else: # copy python executable shutil.copyfile(PYTHON_EXE, outpath) if POSIX: st = os.stat(outpath) os.chmod(outpath, st.st_mode | stat.S_IEXEC) def unique_filename(prefix=TESTFILE_PREFIX, suffix=""): return tempfile.mktemp(prefix=prefix, suffix=suffix) # =================================================================== # --- testing # =================================================================== class TestCase(unittest.TestCase): # Print a full path representation of the single unit tests # being run. def __str__(self): return "%s.%s.%s" % ( self.__class__.__module__, self.__class__.__name__, self._testMethodName) # assertRaisesRegexp renamed to assertRaisesRegex in 3.3; # add support for the new name. if not hasattr(unittest.TestCase, 'assertRaisesRegex'): assertRaisesRegex = unittest.TestCase.assertRaisesRegexp # override default unittest.TestCase unittest.TestCase = TestCase def _setup_tests(): if 'PSUTIL_TESTING' not in os.environ: # This won't work on Windows but set_testing() below will do it. os.environ['PSUTIL_TESTING'] = '1' psutil._psplatform.cext.set_testing() def get_suite(): testmods = [os.path.splitext(x)[0] for x in os.listdir(HERE) if x.endswith('.py') and x.startswith('test_') and not x.startswith('test_memory_leaks')] if "WHEELHOUSE_UPLOADER_USERNAME" in os.environ: testmods = [x for x in testmods if not x.endswith(( "osx", "posix", "linux"))] suite = unittest.TestSuite() for tm in testmods: # ...so that the full test paths are printed on screen tm = "psutil.tests.%s" % tm suite.addTest(unittest.defaultTestLoader.loadTestsFromName(tm)) return suite def run_suite(): _setup_tests() result = unittest.TextTestRunner(verbosity=VERBOSITY).run(get_suite()) success = result.wasSuccessful() sys.exit(0 if success else 1) def run_test_module_by_name(name): # testmodules = [os.path.splitext(x)[0] for x in os.listdir(HERE) # if x.endswith('.py') and x.startswith('test_')] _setup_tests() name = os.path.splitext(os.path.basename(name))[0] suite = unittest.TestSuite() suite.addTest(unittest.defaultTestLoader.loadTestsFromName(name)) result = unittest.TextTestRunner(verbosity=VERBOSITY).run(suite) success = result.wasSuccessful() sys.exit(0 if success else 1) def retry_before_failing(retries=NO_RETRIES): """Decorator which runs a test function and retries N times before actually failing. """ return retry(exception=AssertionError, timeout=None, retries=retries) def skip_on_access_denied(only_if=None): """Decorator to Ignore AccessDenied exceptions.""" def decorator(fun): @functools.wraps(fun) def wrapper(*args, **kwargs): try: return fun(*args, **kwargs) except psutil.AccessDenied: if only_if is not None: if not only_if: raise raise unittest.SkipTest("raises AccessDenied") return wrapper return decorator def skip_on_not_implemented(only_if=None): """Decorator to Ignore NotImplementedError exceptions.""" def decorator(fun): @functools.wraps(fun) def wrapper(*args, **kwargs): try: return fun(*args, **kwargs) except NotImplementedError: if only_if is not None: if not only_if: raise msg = "%r was skipped because it raised NotImplementedError" \ % fun.__name__ raise unittest.SkipTest(msg) return wrapper return decorator # =================================================================== # --- network # =================================================================== def get_free_port(host='127.0.0.1'): """Return an unused TCP port.""" with contextlib.closing(socket.socket()) as sock: sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) sock.bind((host, 0)) return sock.getsockname()[1] @contextlib.contextmanager def unix_socket_path(suffix=""): """A context manager which returns a non-existent file name and tries to delete it on exit. """ assert psutil.POSIX path = unique_filename(suffix=suffix) try: yield path finally: try: os.unlink(path) except OSError: pass def bind_socket(family=AF_INET, type=SOCK_STREAM, addr=None): """Binds a generic socket.""" if addr is None and family in (AF_INET, AF_INET6): addr = ("", 0) sock = socket.socket(family, type) try: sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) sock.bind(addr) if type == socket.SOCK_STREAM: sock.listen(10) return sock except Exception: sock.close() raise def bind_unix_socket(name, type=socket.SOCK_STREAM): """Bind a UNIX socket.""" assert psutil.POSIX assert not os.path.exists(name), name sock = socket.socket(socket.AF_UNIX, type) try: sock.bind(name) if type == socket.SOCK_STREAM: sock.listen(10) except Exception: sock.close() raise return sock def tcp_socketpair(family, addr=("", 0)): """Build a pair of TCP sockets connected to each other. Return a (server, client) tuple. """ with contextlib.closing(socket.socket(family, SOCK_STREAM)) as ll: ll.bind(addr) ll.listen(10) addr = ll.getsockname() c = socket.socket(family, SOCK_STREAM) try: c.connect(addr) caddr = c.getsockname() while True: a, addr = ll.accept() # check that we've got the correct client if addr == caddr: return (a, c) a.close() except OSError: c.close() raise def unix_socketpair(name): """Build a pair of UNIX sockets connected to each other through the same UNIX file name. Return a (server, client) tuple. """ assert psutil.POSIX server = client = None try: server = bind_unix_socket(name, type=socket.SOCK_STREAM) server.setblocking(0) client = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) client.setblocking(0) client.connect(name) # new = server.accept() except Exception: if server is not None: server.close() if client is not None: client.close() raise return (server, client) @contextlib.contextmanager def create_sockets(): """Open as many socket families / types as possible.""" socks = [] fname1 = fname2 = None try: socks.append(bind_socket(socket.AF_INET, socket.SOCK_STREAM)) socks.append(bind_socket(socket.AF_INET, socket.SOCK_DGRAM)) if supports_ipv6(): socks.append(bind_socket(socket.AF_INET6, socket.SOCK_STREAM)) socks.append(bind_socket(socket.AF_INET6, socket.SOCK_DGRAM)) if POSIX and HAS_CONNECTIONS_UNIX: fname1 = unix_socket_path().__enter__() fname2 = unix_socket_path().__enter__() s1, s2 = unix_socketpair(fname1) s3 = bind_unix_socket(fname2, type=socket.SOCK_DGRAM) # self.addCleanup(safe_rmpath, fname1) # self.addCleanup(safe_rmpath, fname2) for s in (s1, s2, s3): socks.append(s) yield socks finally: for s in socks: s.close() if fname1 is not None: safe_rmpath(fname1) if fname2 is not None: safe_rmpath(fname2) def check_net_address(addr, family): """Check a net address validity. Supported families are IPv4, IPv6 and MAC addresses. """ import ipaddress # python >= 3.3 / requires "pip install ipaddress" if enum and PY3: assert isinstance(family, enum.IntEnum), family if family == socket.AF_INET: octs = [int(x) for x in addr.split('.')] assert len(octs) == 4, addr for num in octs: assert 0 <= num <= 255, addr if not PY3: addr = unicode(addr) ipaddress.IPv4Address(addr) elif family == socket.AF_INET6: assert isinstance(addr, str), addr if not PY3: addr = unicode(addr) ipaddress.IPv6Address(addr) elif family == psutil.AF_LINK: assert re.match(r'([a-fA-F0-9]{2}[:|\-]?){6}', addr) is not None, addr else: raise ValueError("unknown family %r", family) def check_connection_ntuple(conn): """Check validity of a connection namedtuple.""" # check ntuple assert len(conn) in (6, 7), conn has_pid = len(conn) == 7 has_fd = getattr(conn, 'fd', -1) != -1 assert conn[0] == conn.fd assert conn[1] == conn.family assert conn[2] == conn.type assert conn[3] == conn.laddr assert conn[4] == conn.raddr assert conn[5] == conn.status if has_pid: assert conn[6] == conn.pid # check fd if has_fd: assert conn.fd >= 0, conn if hasattr(socket, 'fromfd') and not WINDOWS: try: dupsock = socket.fromfd(conn.fd, conn.family, conn.type) except (socket.error, OSError) as err: if err.args[0] != errno.EBADF: raise else: with contextlib.closing(dupsock): assert dupsock.family == conn.family assert dupsock.type == conn.type # check family assert conn.family in (AF_INET, AF_INET6, AF_UNIX), repr(conn.family) if conn.family in (AF_INET, AF_INET6): # actually try to bind the local socket; ignore IPv6 # sockets as their address might be represented as # an IPv4-mapped-address (e.g. "::127.0.0.1") # and that's rejected by bind() if conn.family == AF_INET: s = socket.socket(conn.family, conn.type) with contextlib.closing(s): try: s.bind((conn.laddr[0], 0)) except socket.error as err: if err.errno != errno.EADDRNOTAVAIL: raise elif conn.family == AF_UNIX: assert conn.status == psutil.CONN_NONE, conn.status # check type (SOCK_SEQPACKET may happen in case of AF_UNIX socks) assert conn.type in (SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET), \ repr(conn.type) if conn.type == SOCK_DGRAM: assert conn.status == psutil.CONN_NONE, conn.status # check laddr (IP address and port sanity) for addr in (conn.laddr, conn.raddr): if conn.family in (AF_INET, AF_INET6): assert isinstance(addr, tuple), addr if not addr: continue assert isinstance(addr.port, int), addr.port assert 0 <= addr.port <= 65535, addr.port check_net_address(addr.ip, conn.family) elif conn.family == AF_UNIX: assert isinstance(addr, str), addr # check status assert isinstance(conn.status, str), conn valids = [getattr(psutil, x) for x in dir(psutil) if x.startswith('CONN_')] assert conn.status in valids, conn # =================================================================== # --- compatibility # =================================================================== def reload_module(module): """Backport of importlib.reload of Python 3.3+.""" try: import importlib if not hasattr(importlib, 'reload'): # python <=3.3 raise ImportError except ImportError: import imp return imp.reload(module) else: return importlib.reload(module) def import_module_by_path(path): name = os.path.splitext(os.path.basename(path))[0] if sys.version_info[0] == 2: import imp return imp.load_source(name, path) elif sys.version_info[:2] <= (3, 4): from importlib.machinery import SourceFileLoader return SourceFileLoader(name, path).load_module() else: import importlib.util spec = importlib.util.spec_from_file_location(name, path) mod = importlib.util.module_from_spec(spec) spec.loader.exec_module(mod) return mod # =================================================================== # --- others # =================================================================== def warn(msg): """Raise a warning msg.""" warnings.warn(msg, UserWarning) def is_namedtuple(x): """Check if object is an instance of namedtuple.""" t = type(x) b = t.__bases__ if len(b) != 1 or b[0] != tuple: return False f = getattr(t, '_fields', None) if not isinstance(f, tuple): return False return all(type(n) == str for n in f) if POSIX: @contextlib.contextmanager def copyload_shared_lib(dst_prefix=TESTFILE_PREFIX): """Ctx manager which picks up a random shared CO lib used by this process, copies it in another location and loads it in memory via ctypes. Return the new absolutized path. """ ext = ".so" dst = tempfile.mktemp(prefix=dst_prefix, suffix=ext) libs = [x.path for x in psutil.Process().memory_maps() if os.path.splitext(x.path)[1] == ext and 'python' in x.path.lower()] src = random.choice(libs) shutil.copyfile(src, dst) try: ctypes.CDLL(dst) yield dst finally: safe_rmpath(dst) else: @contextlib.contextmanager def copyload_shared_lib(dst_prefix=TESTFILE_PREFIX): """Ctx manager which picks up a random shared DLL lib used by this process, copies it in another location and loads it in memory via ctypes. Return the new absolutized, normcased path. """ from ctypes import wintypes from ctypes import WinError ext = ".dll" dst = tempfile.mktemp(prefix=dst_prefix, suffix=ext) libs = [x.path for x in psutil.Process().memory_maps() if os.path.splitext(x.path)[1].lower() == ext and 'python' in os.path.basename(x.path).lower() and 'wow64' not in x.path.lower()] src = random.choice(libs) shutil.copyfile(src, dst) cfile = None try: cfile = ctypes.WinDLL(dst) yield dst finally: # Work around OverflowError: # - https://ci.appveyor.com/project/giampaolo/psutil/build/1207/ # job/o53330pbnri9bcw7 # - http://bugs.python.org/issue30286 # - http://stackoverflow.com/questions/23522055 if cfile is not None: FreeLibrary = ctypes.windll.kernel32.FreeLibrary FreeLibrary.argtypes = [wintypes.HMODULE] ret = FreeLibrary(cfile._handle) if ret == 0: WinError() safe_rmpath(dst)
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