/usr/lib/python2.7/dist-packages/gevent/_tblib.py is in python-gevent 1.2.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 | # -*- coding: utf-8 -*-
# A vendored version of part of https://github.com/ionelmc/python-tblib
# pylint:disable=redefined-outer-name,reimported,function-redefined,bare-except,no-else-return,broad-except
####
# Copyright (c) 2013-2016, Ionel Cristian Mărieș
# All rights reserved.
# Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
# following conditions are met:
# 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following
# disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided with the distribution.
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
####
# cpython.py
"""
Taken verbatim from Jinja2.
https://github.com/mitsuhiko/jinja2/blob/master/jinja2/debug.py#L267
"""
#import platform # XXX: gevent cannot import platform at the top level; interferes with monkey patching
import sys
def _init_ugly_crap():
"""This function implements a few ugly things so that we can patch the
traceback objects. The function returned allows resetting `tb_next` on
any python traceback object. Do not attempt to use this on non cpython
interpreters
"""
import ctypes
from types import TracebackType
# figure out side of _Py_ssize_t
if hasattr(ctypes.pythonapi, 'Py_InitModule4_64'):
_Py_ssize_t = ctypes.c_int64
else:
_Py_ssize_t = ctypes.c_int
# regular python
class _PyObject(ctypes.Structure):
pass
_PyObject._fields_ = [
('ob_refcnt', _Py_ssize_t),
('ob_type', ctypes.POINTER(_PyObject))
]
# python with trace
if hasattr(sys, 'getobjects'):
class _PyObject(ctypes.Structure):
pass
_PyObject._fields_ = [
('_ob_next', ctypes.POINTER(_PyObject)),
('_ob_prev', ctypes.POINTER(_PyObject)),
('ob_refcnt', _Py_ssize_t),
('ob_type', ctypes.POINTER(_PyObject))
]
class _Traceback(_PyObject):
pass
_Traceback._fields_ = [
('tb_next', ctypes.POINTER(_Traceback)),
('tb_frame', ctypes.POINTER(_PyObject)),
('tb_lasti', ctypes.c_int),
('tb_lineno', ctypes.c_int)
]
def tb_set_next(tb, next):
"""Set the tb_next attribute of a traceback object."""
if not (isinstance(tb, TracebackType) and (next is None or isinstance(next, TracebackType))):
raise TypeError('tb_set_next arguments must be traceback objects')
obj = _Traceback.from_address(id(tb))
if tb.tb_next is not None:
old = _Traceback.from_address(id(tb.tb_next))
old.ob_refcnt -= 1
if next is None:
obj.tb_next = ctypes.POINTER(_Traceback)()
else:
next = _Traceback.from_address(id(next))
next.ob_refcnt += 1
obj.tb_next = ctypes.pointer(next)
return tb_set_next
tb_set_next = None
#try:
# if platform.python_implementation() == 'CPython':
# tb_set_next = _init_ugly_crap()
#except Exception as exc:
# sys.stderr.write("Failed to initialize cpython support: {!r}".format(exc))
#del _init_ugly_crap
# __init__.py
import re
from types import CodeType
from types import TracebackType
try:
from __pypy__ import tproxy
except ImportError:
tproxy = None
__version__ = '1.3.0'
__all__ = ('Traceback',)
PY3 = sys.version_info[0] == 3
FRAME_RE = re.compile(r'^\s*File "(?P<co_filename>.+)", line (?P<tb_lineno>\d+)(, in (?P<co_name>.+))?$')
class _AttrDict(dict):
__slots__ = ()
__getattr__ = dict.__getitem__
# noinspection PyPep8Naming
class __traceback_maker(Exception):
pass
class TracebackParseError(Exception):
pass
class Code(object):
def __init__(self, code):
self.co_filename = code.co_filename
self.co_name = code.co_name
# gevent: copy more attributes
self.co_nlocals = code.co_nlocals
self.co_stacksize = code.co_stacksize
self.co_flags = code.co_flags
self.co_firstlineno = code.co_firstlineno
class Frame(object):
def __init__(self, frame):
self.f_globals = dict([
(k, v)
for k, v in frame.f_globals.items()
if k in ("__file__", "__name__")
])
self.f_code = Code(frame.f_code)
def clear(self):
# For compatibility with PyPy 3.5;
# clear was added to frame in Python 3.4
# and is called by traceback.clear_frames(), which
# in turn is called by unittest.TestCase.assertRaises
pass
class Traceback(object):
tb_next = None
def __init__(self, tb):
self.tb_frame = Frame(tb.tb_frame)
# noinspection SpellCheckingInspection
self.tb_lineno = int(tb.tb_lineno)
# Build in place to avoid exceeding the recursion limit
tb = tb.tb_next
prev_traceback = self
cls = type(self)
while tb is not None:
traceback = object.__new__(cls)
traceback.tb_frame = Frame(tb.tb_frame)
traceback.tb_lineno = int(tb.tb_lineno)
prev_traceback.tb_next = traceback
prev_traceback = traceback
tb = tb.tb_next
def as_traceback(self):
if tproxy:
return tproxy(TracebackType, self.__tproxy_handler)
if not tb_set_next:
raise RuntimeError("Cannot re-create traceback !")
current = self
top_tb = None
tb = None
while current:
f_code = current.tb_frame.f_code
code = compile('\n' * (current.tb_lineno - 1) + 'raise __traceback_maker', current.tb_frame.f_code.co_filename, 'exec')
if PY3:
code = CodeType(
0, code.co_kwonlyargcount,
code.co_nlocals, code.co_stacksize, code.co_flags,
code.co_code, code.co_consts, code.co_names, code.co_varnames,
f_code.co_filename, f_code.co_name,
code.co_firstlineno, code.co_lnotab, (), ()
)
else:
code = CodeType(
0,
code.co_nlocals, code.co_stacksize, code.co_flags,
code.co_code, code.co_consts, code.co_names, code.co_varnames,
f_code.co_filename.encode(), f_code.co_name.encode(),
code.co_firstlineno, code.co_lnotab, (), ()
)
# noinspection PyBroadException
try:
exec(code, current.tb_frame.f_globals, {})
except:
next_tb = sys.exc_info()[2].tb_next
if top_tb is None:
top_tb = next_tb
if tb is not None:
tb_set_next(tb, next_tb)
tb = next_tb
del next_tb
current = current.tb_next
try:
return top_tb
finally:
del top_tb
del tb
# noinspection SpellCheckingInspection
def __tproxy_handler(self, operation, *args, **kwargs):
if operation in ('__getattribute__', '__getattr__'):
if args[0] == 'tb_next':
return self.tb_next and self.tb_next.as_traceback()
else:
return getattr(self, args[0])
else:
return getattr(self, operation)(*args, **kwargs)
def to_dict(self):
"""Convert a Traceback into a dictionary representation"""
if self.tb_next is None:
tb_next = None
else:
tb_next = self.tb_next.to_dict()
code = {
'co_filename': self.tb_frame.f_code.co_filename,
'co_name': self.tb_frame.f_code.co_name,
}
frame = {
'f_globals': self.tb_frame.f_globals,
'f_code': code,
}
return {
'tb_frame': frame,
'tb_lineno': self.tb_lineno,
'tb_next': tb_next,
}
@classmethod
def from_dict(cls, dct):
if dct['tb_next']:
tb_next = cls.from_dict(dct['tb_next'])
else:
tb_next = None
code = _AttrDict(
co_filename=dct['tb_frame']['f_code']['co_filename'],
co_name=dct['tb_frame']['f_code']['co_name'],
)
frame = _AttrDict(
f_globals=dct['tb_frame']['f_globals'],
f_code=code,
)
tb = _AttrDict(
tb_frame=frame,
tb_lineno=dct['tb_lineno'],
tb_next=tb_next,
)
return cls(tb)
@classmethod
def from_string(cls, string, strict=True):
frames = []
header = strict
for line in string.splitlines():
line = line.rstrip()
if header:
if line == 'Traceback (most recent call last):':
header = False
continue
frame_match = FRAME_RE.match(line)
if frame_match:
frames.append(frame_match.groupdict())
elif line.startswith(' '):
pass
elif strict:
break # traceback ended
if frames:
previous = None
for frame in reversed(frames):
previous = _AttrDict(
frame,
tb_frame=_AttrDict(
frame,
f_globals=_AttrDict(
__file__=frame['co_filename'],
__name__='?',
),
f_code=_AttrDict(frame),
),
tb_next=previous,
)
return cls(previous)
else:
raise TracebackParseError("Could not find any frames in %r." % string)
# pickling_support.py
def unpickle_traceback(tb_frame, tb_lineno, tb_next):
ret = object.__new__(Traceback)
ret.tb_frame = tb_frame
ret.tb_lineno = tb_lineno
ret.tb_next = tb_next
return ret.as_traceback()
def pickle_traceback(tb):
return unpickle_traceback, (Frame(tb.tb_frame), tb.tb_lineno, tb.tb_next and Traceback(tb.tb_next))
def install():
try:
import copy_reg
except ImportError:
import copyreg as copy_reg
copy_reg.pickle(TracebackType, pickle_traceback)
# Added by gevent
# We have to defer the initialization, and especially the import of platform,
# until runtime. If we're monkey patched, we need to be sure to use
# the original __import__ to avoid switching through the hub due to
# import locks on Python 2. See also builtins.py for details.
def _unlocked_imports(f):
def g(a):
if sys is None: # pragma: no cover
# interpreter shutdown on Py2
return
gb = None
if 'gevent.builtins' in sys.modules:
gb = sys.modules['gevent.builtins']
gb._unlock_imports()
try:
return f(a)
finally:
if gb is not None:
gb._lock_imports()
g.__name__ = f.__name__
g.__module__ = f.__module__
return g
def _import_dump_load():
global dumps
global loads
try:
import cPickle as pickle
except ImportError:
import pickle
dumps = pickle.dumps
loads = pickle.loads
dumps = loads = None
_installed = False
def _init():
global _installed
global tb_set_next
if _installed:
return
_installed = True
import platform
try:
if platform.python_implementation() == 'CPython':
tb_set_next = _init_ugly_crap()
except Exception as exc:
sys.stderr.write("Failed to initialize cpython support: {!r}".format(exc))
try:
from __pypy__ import tproxy
except ImportError:
tproxy = None
if not tb_set_next and not tproxy:
raise ImportError("Cannot use tblib. Runtime not supported.")
_import_dump_load()
install()
@_unlocked_imports
def dump_traceback(tb):
# Both _init and dump/load have to be unlocked, because
# copy_reg and pickle can do imports to resolve class names; those
# class names are in this module and greenlet safe though
_init()
return dumps(tb)
@_unlocked_imports
def load_traceback(s):
_init()
return loads(s)
|