/usr/lib/python2.7/dist-packages/OpenSSL/test/util.py is in python-openssl 0.14-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 | # Copyright (C) Jean-Paul Calderone
# Copyright (C) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Helpers for the OpenSSL test suite, largely copied from
U{Twisted<http://twistedmatrix.com/>}.
"""
import shutil
import traceback
import os, os.path
from tempfile import mktemp
from unittest import TestCase
import sys
from OpenSSL._util import exception_from_error_queue
from OpenSSL.crypto import Error
try:
import memdbg
except Exception:
class _memdbg(object): heap = None
memdbg = _memdbg()
from OpenSSL._util import ffi, lib, byte_string as b
class TestCase(TestCase):
"""
:py:class:`TestCase` adds useful testing functionality beyond what is available
from the standard library :py:class:`unittest.TestCase`.
"""
def run(self, result):
run = super(TestCase, self).run
if memdbg.heap is None:
return run(result)
# Run the test as usual
before = set(memdbg.heap)
run(result)
# Clean up some long-lived allocations so they won't be reported as
# memory leaks.
lib.CRYPTO_cleanup_all_ex_data()
lib.ERR_remove_thread_state(ffi.NULL)
after = set(memdbg.heap)
if not after - before:
# No leaks, fast succeed
return
if result.wasSuccessful():
# If it passed, run it again with memory debugging
before = set(memdbg.heap)
run(result)
# Clean up some long-lived allocations so they won't be reported as
# memory leaks.
lib.CRYPTO_cleanup_all_ex_data()
lib.ERR_remove_thread_state(ffi.NULL)
after = set(memdbg.heap)
self._reportLeaks(after - before, result)
def _reportLeaks(self, leaks, result):
def format_leak(p):
stacks = memdbg.heap[p]
# Eventually look at multiple stacks for the realloc() case. For
# now just look at the original allocation location.
(size, python_stack, c_stack) = stacks[0]
stack = traceback.format_list(python_stack)[:-1]
# c_stack looks something like this (interesting parts indicated
# with inserted arrows not part of the data):
#
# /home/exarkun/Projects/pyOpenSSL/branches/use-opentls/__pycache__/_cffi__x89095113xb9185b9b.so(+0x12cf) [0x7fe2e20582cf]
# /home/exarkun/Projects/cpython/2.7/python(PyCFunction_Call+0x8b) [0x56265a]
# /home/exarkun/Projects/cpython/2.7/python() [0x4d5f52]
# /home/exarkun/Projects/cpython/2.7/python(PyEval_EvalFrameEx+0x753b) [0x4d0e1e]
# /home/exarkun/Projects/cpython/2.7/python() [0x4d6419]
# /home/exarkun/Projects/cpython/2.7/python() [0x4d6129]
# /home/exarkun/Projects/cpython/2.7/python(PyEval_EvalFrameEx+0x753b) [0x4d0e1e]
# /home/exarkun/Projects/cpython/2.7/python(PyEval_EvalCodeEx+0x1043) [0x4d3726]
# /home/exarkun/Projects/cpython/2.7/python() [0x55fd51]
# /home/exarkun/Projects/cpython/2.7/python(PyObject_Call+0x7e) [0x420ee6]
# /home/exarkun/Projects/cpython/2.7/python(PyEval_CallObjectWithKeywords+0x158) [0x4d56ec]
# /home/exarkun/.local/lib/python2.7/site-packages/cffi-0.5-py2.7-linux-x86_64.egg/_cffi_backend.so(+0xe96e) [0x7fe2e38be96e]
# /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_closure_unix64_inner+0x1b9) [0x7fe2e36ad819]
# /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_closure_unix64+0x46) [0x7fe2e36adb7c]
# /lib/x86_64-linux-gnu/libcrypto.so.1.0.0(CRYPTO_malloc+0x64) [0x7fe2e1cef784] <------ end interesting
# /lib/x86_64-linux-gnu/libcrypto.so.1.0.0(lh_insert+0x16b) [0x7fe2e1d6a24b] .
# /lib/x86_64-linux-gnu/libcrypto.so.1.0.0(+0x61c18) [0x7fe2e1cf0c18] .
# /lib/x86_64-linux-gnu/libcrypto.so.1.0.0(+0x625ec) [0x7fe2e1cf15ec] .
# /lib/x86_64-linux-gnu/libcrypto.so.1.0.0(DSA_new_method+0xe6) [0x7fe2e1d524d6] .
# /lib/x86_64-linux-gnu/libcrypto.so.1.0.0(DSA_generate_parameters+0x3a) [0x7fe2e1d5364a] <------ begin interesting
# /home/exarkun/Projects/opentls/trunk/tls/c/__pycache__/_cffi__x305d4698xb539baaa.so(+0x1f397) [0x7fe2df84d397]
# /home/exarkun/Projects/cpython/2.7/python(PyCFunction_Call+0x8b) [0x56265a]
# /home/exarkun/Projects/cpython/2.7/python() [0x4d5f52]
# /home/exarkun/Projects/cpython/2.7/python(PyEval_EvalFrameEx+0x753b) [0x4d0e1e]
# /home/exarkun/Projects/cpython/2.7/python() [0x4d6419]
# ...
#
# Notice the stack is upside down compared to a Python traceback.
# Identify the start and end of interesting bits and stuff it into the stack we report.
saved = list(c_stack)
# Figure the first interesting frame will be after a the cffi-compiled module
while c_stack and '/__pycache__/_cffi__' not in c_stack[-1]:
c_stack.pop()
# Figure the last interesting frame will always be CRYPTO_malloc,
# since that's where we hooked in to things.
while c_stack and 'CRYPTO_malloc' not in c_stack[0] and 'CRYPTO_realloc' not in c_stack[0]:
c_stack.pop(0)
if c_stack:
c_stack.reverse()
else:
c_stack = saved[::-1]
stack.extend([frame + "\n" for frame in c_stack])
stack.insert(0, "Leaked (%s) at:\n")
return "".join(stack)
if leaks:
unique_leaks = {}
for p in leaks:
size = memdbg.heap[p][-1][0]
new_leak = format_leak(p)
if new_leak not in unique_leaks:
unique_leaks[new_leak] = [(size, p)]
else:
unique_leaks[new_leak].append((size, p))
memdbg.free(p)
for (stack, allocs) in unique_leaks.iteritems():
allocs_accum = []
for (size, pointer) in allocs:
addr = int(ffi.cast('uintptr_t', pointer))
allocs_accum.append("%d@0x%x" % (size, addr))
allocs_report = ", ".join(sorted(allocs_accum))
result.addError(
self,
(None, Exception(stack % (allocs_report,)), None))
def tearDown(self):
"""
Clean up any files or directories created using :py:meth:`TestCase.mktemp`.
Subclasses must invoke this method if they override it or the
cleanup will not occur.
"""
if False and self._temporaryFiles is not None:
for temp in self._temporaryFiles:
if os.path.isdir(temp):
shutil.rmtree(temp)
elif os.path.exists(temp):
os.unlink(temp)
try:
exception_from_error_queue(Error)
except Error:
e = sys.exc_info()[1]
if e.args != ([],):
self.fail("Left over errors in OpenSSL error queue: " + repr(e))
def assertIsInstance(self, instance, classOrTuple, message=None):
"""
Fail if C{instance} is not an instance of the given class or of
one of the given classes.
@param instance: the object to test the type (first argument of the
C{isinstance} call).
@type instance: any.
@param classOrTuple: the class or classes to test against (second
argument of the C{isinstance} call).
@type classOrTuple: class, type, or tuple.
@param message: Custom text to include in the exception text if the
assertion fails.
"""
if not isinstance(instance, classOrTuple):
if message is None:
suffix = ""
else:
suffix = ": " + message
self.fail("%r is not an instance of %s%s" % (
instance, classOrTuple, suffix))
def failUnlessIn(self, containee, container, msg=None):
"""
Fail the test if :py:data:`containee` is not found in :py:data:`container`.
:param containee: the value that should be in :py:class:`container`
:param container: a sequence type, or in the case of a mapping type,
will follow semantics of 'if key in dict.keys()'
:param msg: if msg is None, then the failure message will be
'%r not in %r' % (first, second)
"""
if containee not in container:
raise self.failureException(msg or "%r not in %r"
% (containee, container))
return containee
assertIn = failUnlessIn
def failUnlessIdentical(self, first, second, msg=None):
"""
Fail the test if :py:data:`first` is not :py:data:`second`. This is an
obect-identity-equality test, not an object equality
(i.e. :py:func:`__eq__`) test.
:param msg: if msg is None, then the failure message will be
'%r is not %r' % (first, second)
"""
if first is not second:
raise self.failureException(msg or '%r is not %r' % (first, second))
return first
assertIdentical = failUnlessIdentical
def failIfIdentical(self, first, second, msg=None):
"""
Fail the test if :py:data:`first` is :py:data:`second`. This is an
obect-identity-equality test, not an object equality
(i.e. :py:func:`__eq__`) test.
:param msg: if msg is None, then the failure message will be
'%r is %r' % (first, second)
"""
if first is second:
raise self.failureException(msg or '%r is %r' % (first, second))
return first
assertNotIdentical = failIfIdentical
def failUnlessRaises(self, exception, f, *args, **kwargs):
"""
Fail the test unless calling the function :py:data:`f` with the given
:py:data:`args` and :py:data:`kwargs` raises :py:data:`exception`. The
failure will report the traceback and call stack of the unexpected
exception.
:param exception: exception type that is to be expected
:param f: the function to call
:return: The raised exception instance, if it is of the given type.
:raise self.failureException: Raised if the function call does
not raise an exception or if it raises an exception of a
different type.
"""
try:
result = f(*args, **kwargs)
except exception:
inst = sys.exc_info()[1]
return inst
except:
raise self.failureException('%s raised instead of %s'
% (sys.exc_info()[0],
exception.__name__,
))
else:
raise self.failureException('%s not raised (%r returned)'
% (exception.__name__, result))
assertRaises = failUnlessRaises
_temporaryFiles = None
def mktemp(self):
"""
Pathetic substitute for twisted.trial.unittest.TestCase.mktemp.
"""
if self._temporaryFiles is None:
self._temporaryFiles = []
temp = b(mktemp(dir="."))
self._temporaryFiles.append(temp)
return temp
# Other stuff
def assertConsistentType(self, theType, name, *constructionArgs):
"""
Perform various assertions about :py:data:`theType` to ensure that it is a
well-defined type. This is useful for extension types, where it's
pretty easy to do something wacky. If something about the type is
unusual, an exception will be raised.
:param theType: The type object about which to make assertions.
:param name: A string giving the name of the type.
:param constructionArgs: Positional arguments to use with :py:data:`theType` to
create an instance of it.
"""
self.assertEqual(theType.__name__, name)
self.assertTrue(isinstance(theType, type))
instance = theType(*constructionArgs)
self.assertIdentical(type(instance), theType)
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