cpython-lru_cache-weakref: Lib/rexec.py annotate

annotate Lib/rexec.py @ 27998:e27f58a50737 legacy-trunk

SF bug #690377: Dud footnote reference in distutils docs

author	Raymond Hettinger <python@rcn.com>
date	Fri, 21 Feb 2003 02:47:09 +0000
parents	0464acb5b3e4
children	14f65d661084

rev	line source
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	1 """Restricted execution facilities.
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	2
3637 6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	3 The class RExec exports methods r_exec(), r_eval(), r_execfile(), and
6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	4 r_import(), which correspond roughly to the built-in operations
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	5 exec, eval(), execfile() and import, but executing the code in an
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	6 environment that only exposes those built-in operations that are
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	7 deemed safe. To this end, a modest collection of 'fake' modules is
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	8 created which mimics the standard modules by the same names. It is a
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	9 policy decision which built-in modules and operations are made
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	10 available; this module provides a reasonable default, but derived
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	11 classes can change the policies e.g. by overriding or extending class
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	12 variables like ok_builtin_modules or methods like make_sys().
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	13
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	14 XXX To do:
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	15 - r_open should allow writing tmp dir
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	16 - r_exec etc. with explicit globals/locals? (Use rexec("exec ... in ...")?)
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	17
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	18 """
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	19
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	20
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	21 import sys
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	22 import __builtin__
4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	23 import os
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	24 import ihooks
23603 cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	25 import imp
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	26
16613 f68dbffff927 bunch more __all__ lists Skip Montanaro <skip@pobox.com> parents: 15871 diff changeset	27 __all__ = ["RExec"]
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	28
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	29 class FileBase:
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	30
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	31 ok_file_methods = ('fileno', 'flush', 'isatty', 'read', 'readline',
26668 373d0a8ed6be Applying patch Gustavo Niemeyer <gustavo@niemeyer.net> parents: 25729 diff changeset	32 'readlines', 'seek', 'tell', 'write', 'writelines', 'xreadlines',
373d0a8ed6be Applying patch Gustavo Niemeyer <gustavo@niemeyer.net> parents: 25729 diff changeset	33 '__iter__')
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	34
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	35
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	36 class FileWrapper(FileBase):
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	37
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	38 # XXX This is just like a Bastion -- should use that!
3734 04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	39
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	40 def __init__(self, f):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	41 for m in self.ok_file_methods:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	42 if not hasattr(self, m) and hasattr(f, m):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	43 setattr(self, m, getattr(f, m))
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	44
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	45 def close(self):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	46 self.flush()
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	47
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	48
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	49 TEMPLATE = """
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	50 def %s(self, *args):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	51 return apply(getattr(self.mod, self.name).%s, args)
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	52 """
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	53
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	54 class FileDelegate(FileBase):
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	55
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	56 def __init__(self, mod, name):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	57 self.mod = mod
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	58 self.name = name
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	59
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	60 for m in FileBase.ok_file_methods + ('close',):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	61 exec TEMPLATE % (m, m)
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	62
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	63
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	64 class RHooks(ihooks.Hooks):
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	65
3637 6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	66 def __init__(self, *args):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	67 # Hacks to support both old and new interfaces:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	68 # old interface was RHooks(rexec[, verbose])
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	69 # new interface is RHooks([verbose])
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	70 verbose = 0
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	71 rexec = None
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	72 if args and type(args[-1]) == type(0):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	73 verbose = args[-1]
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	74 args = args[:-1]
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	75 if args and hasattr(args[0], '__class__'):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	76 rexec = args[0]
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	77 args = args[1:]
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	78 if args:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	79 raise TypeError, "too many arguments"
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	80 ihooks.Hooks.__init__(self, verbose)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	81 self.rexec = rexec
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	82
3637 6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	83 def set_rexec(self, rexec):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	84 # Called by RExec instance to complete initialization
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	85 self.rexec = rexec
3637 6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	86
23603 cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	87 def get_suffixes(self):
cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	88 return self.rexec.get_suffixes()
cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	89
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	90 def is_builtin(self, name):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	91 return self.rexec.is_builtin(name)
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	92
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	93 def init_builtin(self, name):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	94 m = __import__(name)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	95 return self.rexec.copy_except(m, ())
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	96
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	97 def init_frozen(self, name): raise SystemError, "don't use this"
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	98 def load_source(self, *args): raise SystemError, "don't use this"
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	99 def load_compiled(self, *args): raise SystemError, "don't use this"
8587 1581c931cb35 For completeness, add a dummy load_package() method to RHooks. It Guido van Rossum <guido@python.org> parents: 8479 diff changeset	100 def load_package(self, *args): raise SystemError, "don't use this"
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	101
3637 6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	102 def load_dynamic(self, name, filename, file):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	103 return self.rexec.load_dynamic(name, filename, file)
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	104
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	105 def add_module(self, name):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	106 return self.rexec.add_module(name)
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	107
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	108 def modules_dict(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	109 return self.rexec.modules
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	110
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	111 def default_path(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	112 return self.rexec.modules['sys'].path
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	113
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	114
9130 b0fa2fc12dfb Get rid of the classes RModuleLoader and RModuleImporter -- these were Guido van Rossum <guido@python.org> parents: 8655 diff changeset	115 # XXX Backwards compatibility
b0fa2fc12dfb Get rid of the classes RModuleLoader and RModuleImporter -- these were Guido van Rossum <guido@python.org> parents: 8655 diff changeset	116 RModuleLoader = ihooks.FancyModuleLoader
b0fa2fc12dfb Get rid of the classes RModuleLoader and RModuleImporter -- these were Guido van Rossum <guido@python.org> parents: 8655 diff changeset	117 RModuleImporter = ihooks.ModuleImporter
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	118
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	119
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	120 class RExec(ihooks._Verbose):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	121 """Basic restricted execution framework.
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	122
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	123 Code executed in this restricted environment will only have access to
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	124 modules and functions that are deemed safe; you can subclass RExec to
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	125 add or remove capabilities as desired.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	126
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	127 The RExec class can prevent code from performing unsafe operations like
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	128 reading or writing disk files, or using TCP/IP sockets. However, it does
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	129 not protect against code using extremely large amounts of memory or
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	130 processor time.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	131
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	132 """
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	133
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	134 ok_path = tuple(sys.path) # That's a policy decision
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	135
4334 f37cbfaa7328 1. Correct typo in FileWrapper.close() (fix by AMK). Guido van Rossum <guido@python.org> parents: 4075 diff changeset	136 ok_builtin_modules = ('audioop', 'array', 'binascii',
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	137 'cmath', 'errno', 'imageop',
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	138 'marshal', 'math', 'md5', 'operator',
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	139 'parser', 'regex', 'pcre', 'rotor', 'select',
26668 373d0a8ed6be Applying patch Gustavo Niemeyer <gustavo@niemeyer.net> parents: 25729 diff changeset	140 'sha', '_sre', 'strop', 'struct', 'time',
373d0a8ed6be Applying patch Gustavo Niemeyer <gustavo@niemeyer.net> parents: 25729 diff changeset	141 'xreadlines', '_weakref')
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	142
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	143 ok_posix_names = ('error', 'fstat', 'listdir', 'lstat', 'readlink',
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	144 'stat', 'times', 'uname', 'getpid', 'getppid',
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	145 'getcwd', 'getuid', 'getgid', 'geteuid', 'getegid')
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	146
25729 b59d1a119393 Allow restricted code to get byteorder, getdefaultencoding(), Fred Drake <fdrake@acm.org> parents: 25728 diff changeset	147 ok_sys_names = ('byteorder', 'copyright', 'exit', 'getdefaultencoding',
b59d1a119393 Allow restricted code to get byteorder, getdefaultencoding(), Fred Drake <fdrake@acm.org> parents: 25728 diff changeset	148 'getrefcount', 'hexversion', 'maxint', 'maxunicode',
b59d1a119393 Allow restricted code to get byteorder, getdefaultencoding(), Fred Drake <fdrake@acm.org> parents: 25728 diff changeset	149 'platform', 'ps1', 'ps2', 'version', 'version_info')
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	150
19901 07818cbcd302 Now that file objects are subclassable, you can get at the file constructor Tim Peters <tim.peters@gmail.com> parents: 19231 diff changeset	151 nok_builtin_names = ('open', 'file', 'reload', '__import__')
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	152
23603 cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	153 ok_file_types = (imp.C_EXTENSION, imp.PY_SOURCE)
cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	154
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	155 def __init__(self, hooks = None, verbose = 0):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	156 """Returns an instance of the RExec class.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	157
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	158 The hooks parameter is an instance of the RHooks class or a subclass
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	159 of it. If it is omitted or None, the default RHooks class is
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	160 instantiated.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	161
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	162 Whenever the RExec module searches for a module (even a built-in one)
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	163 or reads a module's code, it doesn't actually go out to the file
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	164 system itself. Rather, it calls methods of an RHooks instance that
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	165 was passed to or created by its constructor. (Actually, the RExec
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	166 object doesn't make these calls --- they are made by a module loader
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	167 object that's part of the RExec object. This allows another level of
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	168 flexibility, which can be useful when changing the mechanics of
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	169 import within the restricted environment.)
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	170
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	171 By providing an alternate RHooks object, we can control the file
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	172 system accesses made to import a module, without changing the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	173 actual algorithm that controls the order in which those accesses are
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	174 made. For instance, we could substitute an RHooks object that
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	175 passes all filesystem requests to a file server elsewhere, via some
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	176 RPC mechanism such as ILU. Grail's applet loader uses this to support
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	177 importing applets from a URL for a directory.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	178
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	179 If the verbose parameter is true, additional debugging output may be
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	180 sent to standard output.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	181
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	182 """
27109 0464acb5b3e4 Sabotage rexec.py. It is not safe since the new-style classes. Guido van Rossum <guido@python.org> parents: 26668 diff changeset	183
0464acb5b3e4 Sabotage rexec.py. It is not safe since the new-style classes. Guido van Rossum <guido@python.org> parents: 26668 diff changeset	184 raise RuntimeError, "This code is not secure in Python 2.2 and 2.3"
0464acb5b3e4 Sabotage rexec.py. It is not safe since the new-style classes. Guido van Rossum <guido@python.org> parents: 26668 diff changeset	185
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	186 ihooks._Verbose.__init__(self, verbose)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	187 # XXX There's a circular reference here:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	188 self.hooks = hooks or RHooks(verbose)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	189 self.hooks.set_rexec(self)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	190 self.modules = {}
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	191 self.ok_dynamic_modules = self.ok_builtin_modules
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	192 list = []
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	193 for mname in self.ok_builtin_modules:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	194 if mname in sys.builtin_module_names:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	195 list.append(mname)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	196 self.ok_builtin_modules = tuple(list)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	197 self.set_trusted_path()
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	198 self.make_builtin()
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	199 self.make_initial_modules()
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	200 # make_sys must be last because it adds the already created
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	201 # modules to its builtin_module_names
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	202 self.make_sys()
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	203 self.loader = RModuleLoader(self.hooks, verbose)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	204 self.importer = RModuleImporter(self.loader, verbose)
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	205
3637 6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	206 def set_trusted_path(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	207 # Set the path from which dynamic modules may be loaded.
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	208 # Those dynamic modules must also occur in ok_builtin_modules
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	209 self.trusted_path = filter(os.path.isabs, sys.path)
3637 6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	210
6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	211 def load_dynamic(self, name, filename, file):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	212 if name not in self.ok_dynamic_modules:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	213 raise ImportError, "untrusted dynamic module: %s" % name
23620 a1de0bab5475 SF 563203. Replaced 'has_key()' with 'in'. Raymond Hettinger <python@rcn.com> parents: 23603 diff changeset	214 if name in sys.modules:
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	215 src = sys.modules[name]
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	216 else:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	217 src = imp.load_dynamic(name, filename, file)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	218 dst = self.copy_except(src, [])
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	219 return dst
3637 6c0086f9270c Fix some obsolete names comments. Guido van Rossum <guido@python.org> parents: 2965 diff changeset	220
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	221 def make_initial_modules(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	222 self.make_main()
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	223 self.make_osname()
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	224
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	225 # Helpers for RHooks
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	226
23603 cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	227 def get_suffixes(self):
cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	228 return [item # (suff, mode, type)
cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	229 for item in imp.get_suffixes()
cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	230 if item[2] in self.ok_file_types]
cffd091f56d0 SF bug 533625 (Armin Rigo). rexec: potential security hole Guido van Rossum <guido@python.org> parents: 23578 diff changeset	231
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	232 def is_builtin(self, mname):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	233 return mname in self.ok_builtin_modules
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	234
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	235 # The make_* methods create specific built-in modules
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	236
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	237 def make_builtin(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	238 m = self.copy_except(__builtin__, self.nok_builtin_names)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	239 m.__import__ = self.r_import
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	240 m.reload = self.r_reload
19901 07818cbcd302 Now that file objects are subclassable, you can get at the file constructor Tim Peters <tim.peters@gmail.com> parents: 19231 diff changeset	241 m.open = m.file = self.r_open
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	242
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	243 def make_main(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	244 m = self.add_module('__main__')
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	245
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	246 def make_osname(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	247 osname = os.name
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	248 src = __import__(osname)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	249 dst = self.copy_only(src, self.ok_posix_names)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	250 dst.environ = e = {}
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	251 for key, value in os.environ.items():
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	252 e[key] = value
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	253
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	254 def make_sys(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	255 m = self.copy_only(sys, self.ok_sys_names)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	256 m.modules = self.modules
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	257 m.argv = ['RESTRICTED']
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	258 m.path = map(None, self.ok_path)
8655 ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	259 m.exc_info = self.r_exc_info
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	260 m = self.modules['sys']
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	261 l = self.modules.keys() + list(self.ok_builtin_modules)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	262 l.sort()
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	263 m.builtin_module_names = tuple(l)
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	264
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	265 # The copy_* methods copy existing modules with some changes
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	266
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	267 def copy_except(self, src, exceptions):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	268 dst = self.copy_none(src)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	269 for name in dir(src):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	270 setattr(dst, name, getattr(src, name))
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	271 for name in exceptions:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	272 try:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	273 delattr(dst, name)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	274 except AttributeError:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	275 pass
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	276 return dst
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	277
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	278 def copy_only(self, src, names):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	279 dst = self.copy_none(src)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	280 for name in names:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	281 try:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	282 value = getattr(src, name)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	283 except AttributeError:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	284 continue
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	285 setattr(dst, name, value)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	286 return dst
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	287
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	288 def copy_none(self, src):
8479 e281d5036725 Add the __doc__ string from the original module on copy_none(). Guido van Rossum <guido@python.org> parents: 7756 diff changeset	289 m = self.add_module(src.__name__)
e281d5036725 Add the __doc__ string from the original module on copy_none(). Guido van Rossum <guido@python.org> parents: 7756 diff changeset	290 m.__doc__ = src.__doc__
e281d5036725 Add the __doc__ string from the original module on copy_none(). Guido van Rossum <guido@python.org> parents: 7756 diff changeset	291 return m
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	292
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	293 # Add a module -- return an existing module or create one
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	294
21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	295 def add_module(self, mname):
25273 98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	296 m = self.modules.get(mname)
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	297 if m is None:
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	298 self.modules[mname] = m = self.hooks.new_module(mname)
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	299 m.__builtins__ = self.modules['__builtin__']
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	300 return m
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	301
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	302 # The r* methods are public interfaces
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	303
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	304 def r_exec(self, code):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	305 """Execute code within a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	306
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	307 The code parameter must either be a string containing one or more
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	308 lines of Python code, or a compiled code object, which will be
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	309 executed in the restricted environment's __main__ module.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	310
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	311 """
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	312 m = self.add_module('__main__')
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	313 exec code in m.__dict__
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	314
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	315 def r_eval(self, code):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	316 """Evaluate code within a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	317
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	318 The code parameter must either be a string containing a Python
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	319 expression, or a compiled code object, which will be evaluated in
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	320 the restricted environment's __main__ module. The value of the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	321 expression or code object will be returned.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	322
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	323 """
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	324 m = self.add_module('__main__')
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	325 return eval(code, m.__dict__)
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	326
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	327 def r_execfile(self, file):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	328 """Execute the Python code in the file in the restricted
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	329 environment's __main__ module.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	330
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	331 """
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	332 m = self.add_module('__main__')
20419 4f3d1240830e Ignore execfile() return value; reported by Neal Norwitz. Fred Drake <fdrake@acm.org> parents: 19901 diff changeset	333 execfile(file, m.__dict__)
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	334
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	335 def r_import(self, mname, globals={}, locals={}, fromlist=[]):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	336 """Import a module, raising an ImportError exception if the module
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	337 is considered unsafe.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	338
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	339 This method is implicitly called by code executing in the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	340 restricted environment. Overriding this method in a subclass is
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	341 used to change the policies enforced by a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	342
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	343 """
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	344 return self.importer.import_module(mname, globals, locals, fromlist)
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	345
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	346 def r_reload(self, m):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	347 """Reload the module object, re-parsing and re-initializing it.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	348
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	349 This method is implicitly called by code executing in the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	350 restricted environment. Overriding this method in a subclass is
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	351 used to change the policies enforced by a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	352
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	353 """
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	354 return self.importer.reload(m)
2934 cb5ccbba1856 add module binascii; add r_unload/s_unload; don't change 'rb' to 'r' in open Guido van Rossum <guido@python.org> parents: 2926 diff changeset	355
cb5ccbba1856 add module binascii; add r_unload/s_unload; don't change 'rb' to 'r' in open Guido van Rossum <guido@python.org> parents: 2926 diff changeset	356 def r_unload(self, m):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	357 """Unload the module.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	358
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	359 Removes it from the restricted environment's sys.modules dictionary.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	360
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	361 This method is implicitly called by code executing in the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	362 restricted environment. Overriding this method in a subclass is
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	363 used to change the policies enforced by a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	364
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	365 """
2934 cb5ccbba1856 add module binascii; add r_unload/s_unload; don't change 'rb' to 'r' in open Guido van Rossum <guido@python.org> parents: 2926 diff changeset	366 return self.importer.unload(m)
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	367
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	368 # The s_* methods are similar but also swap std{in,out,err}
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	369
3734 04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	370 def make_delegate_files(self):
04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	371 s = self.modules['sys']
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	372 self.delegate_stdin = FileDelegate(s, 'stdin')
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	373 self.delegate_stdout = FileDelegate(s, 'stdout')
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	374 self.delegate_stderr = FileDelegate(s, 'stderr')
3734 04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	375 self.restricted_stdin = FileWrapper(sys.stdin)
04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	376 self.restricted_stdout = FileWrapper(sys.stdout)
04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	377 self.restricted_stderr = FileWrapper(sys.stderr)
04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	378
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	379 def set_files(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	380 if not hasattr(self, 'save_stdin'):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	381 self.save_files()
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	382 if not hasattr(self, 'delegate_stdin'):
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	383 self.make_delegate_files()
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	384 s = self.modules['sys']
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	385 s.stdin = self.restricted_stdin
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	386 s.stdout = self.restricted_stdout
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	387 s.stderr = self.restricted_stderr
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	388 sys.stdin = self.delegate_stdin
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	389 sys.stdout = self.delegate_stdout
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	390 sys.stderr = self.delegate_stderr
3734 04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	391
04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	392 def reset_files(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	393 self.restore_files()
3734 04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	394 s = self.modules['sys']
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	395 self.restricted_stdin = s.stdin
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	396 self.restricted_stdout = s.stdout
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	397 self.restricted_stderr = s.stderr
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	398
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	399
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	400 def save_files(self):
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	401 self.save_stdin = sys.stdin
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	402 self.save_stdout = sys.stdout
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	403 self.save_stderr = sys.stderr
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	404
3734 04c07538cac4 Fixed restore_files(); added reset_files(); made these more flexible. Guido van Rossum <guido@python.org> parents: 3648 diff changeset	405 def restore_files(self):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	406 sys.stdin = self.save_stdin
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	407 sys.stdout = self.save_stdout
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	408 sys.stderr = self.save_stderr
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	409
4334 f37cbfaa7328 1. Correct typo in FileWrapper.close() (fix by AMK). Guido van Rossum <guido@python.org> parents: 4075 diff changeset	410 def s_apply(self, func, args=(), kw=None):
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	411 self.save_files()
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	412 try:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	413 self.set_files()
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	414 if kw:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	415 r = apply(func, args, kw)
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	416 else:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	417 r = apply(func, args)
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	418 finally:
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	419 self.restore_files()
18142 47c9d0cb6e31 Fix SF bug #433904 (Alex Martelli) - all s_* methods return None only. Guido van Rossum <guido@python.org> parents: 16613 diff changeset	420 return r
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	421
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	422 def s_exec(self, *args):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	423 """Execute code within a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	424
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	425 Similar to the r_exec() method, but the code will be granted access
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	426 to restricted versions of the standard I/O streams sys.stdin,
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	427 sys.stderr, and sys.stdout.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	428
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	429 The code parameter must either be a string containing one or more
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	430 lines of Python code, or a compiled code object, which will be
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	431 executed in the restricted environment's __main__ module.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	432
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	433 """
18142 47c9d0cb6e31 Fix SF bug #433904 (Alex Martelli) - all s_* methods return None only. Guido van Rossum <guido@python.org> parents: 16613 diff changeset	434 return self.s_apply(self.r_exec, args)
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	435
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	436 def s_eval(self, *args):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	437 """Evaluate code within a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	438
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	439 Similar to the r_eval() method, but the code will be granted access
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	440 to restricted versions of the standard I/O streams sys.stdin,
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	441 sys.stderr, and sys.stdout.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	442
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	443 The code parameter must either be a string containing a Python
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	444 expression, or a compiled code object, which will be evaluated in
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	445 the restricted environment's __main__ module. The value of the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	446 expression or code object will be returned.
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	447
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	448 """
23578 c367607bb5f7 Move statement out of comment block Raymond Hettinger <python@rcn.com> parents: 23565 diff changeset	449 return self.s_apply(self.r_eval, args)
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	450
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	451 def s_execfile(self, *args):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	452 """Execute the Python code in the file in the restricted
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	453 environment's __main__ module.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	454
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	455 Similar to the r_execfile() method, but the code will be granted
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	456 access to restricted versions of the standard I/O streams sys.stdin,
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	457 sys.stderr, and sys.stdout.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	458
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	459 """
18142 47c9d0cb6e31 Fix SF bug #433904 (Alex Martelli) - all s_* methods return None only. Guido van Rossum <guido@python.org> parents: 16613 diff changeset	460 return self.s_apply(self.r_execfile, args)
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	461
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	462 def s_import(self, *args):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	463 """Import a module, raising an ImportError exception if the module
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	464 is considered unsafe.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	465
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	466 This method is implicitly called by code executing in the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	467 restricted environment. Overriding this method in a subclass is
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	468 used to change the policies enforced by a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	469
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	470 Similar to the r_import() method, but has access to restricted
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	471 versions of the standard I/O streams sys.stdin, sys.stderr, and
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	472 sys.stdout.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	473
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	474 """
18142 47c9d0cb6e31 Fix SF bug #433904 (Alex Martelli) - all s_* methods return None only. Guido van Rossum <guido@python.org> parents: 16613 diff changeset	475 return self.s_apply(self.r_import, args)
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	476
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	477 def s_reload(self, *args):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	478 """Reload the module object, re-parsing and re-initializing it.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	479
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	480 This method is implicitly called by code executing in the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	481 restricted environment. Overriding this method in a subclass is
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	482 used to change the policies enforced by a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	483
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	484 Similar to the r_reload() method, but has access to restricted
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	485 versions of the standard I/O streams sys.stdin, sys.stderr, and
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	486 sys.stdout.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	487
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	488 """
18142 47c9d0cb6e31 Fix SF bug #433904 (Alex Martelli) - all s_* methods return None only. Guido van Rossum <guido@python.org> parents: 16613 diff changeset	489 return self.s_apply(self.r_reload, args)
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	490
2934 cb5ccbba1856 add module binascii; add r_unload/s_unload; don't change 'rb' to 'r' in open Guido van Rossum <guido@python.org> parents: 2926 diff changeset	491 def s_unload(self, *args):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	492 """Unload the module.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	493
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	494 Removes it from the restricted environment's sys.modules dictionary.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	495
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	496 This method is implicitly called by code executing in the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	497 restricted environment. Overriding this method in a subclass is
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	498 used to change the policies enforced by a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	499
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	500 Similar to the r_unload() method, but has access to restricted
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	501 versions of the standard I/O streams sys.stdin, sys.stderr, and
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	502 sys.stdout.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	503
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	504 """
18142 47c9d0cb6e31 Fix SF bug #433904 (Alex Martelli) - all s_* methods return None only. Guido van Rossum <guido@python.org> parents: 16613 diff changeset	505 return self.s_apply(self.r_unload, args)
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	506
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	507 # Restricted open(...)
15871 62aeefa01fdd Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 15039 diff changeset	508
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	509 def r_open(self, file, mode='r', buf=-1):
23565 1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	510 """Method called when open() is called in the restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	511
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	512 The arguments are identical to those of the open() function, and a
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	513 file object (or a class instance compatible with file objects)
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	514 should be returned. RExec's default behaviour is allow opening
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	515 any file for reading, but forbidding any attempt to write a file.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	516
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	517 This method is implicitly called by code executing in the
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	518 restricted environment. Overriding this method in a subclass is
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	519 used to change the policies enforced by a restricted environment.
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	520
1a67fbc7a066 Patch 560023 adding docstrings. 2.2 Candidate (after verifying modules were not updated after 2.2). Raymond Hettinger <python@rcn.com> parents: 20419 diff changeset	521 """
26668 373d0a8ed6be Applying patch Gustavo Niemeyer <gustavo@niemeyer.net> parents: 25729 diff changeset	522 mode = str(mode)
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	523 if mode not in ('r', 'rb'):
4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	524 raise IOError, "can't open files for writing in restricted mode"
2934 cb5ccbba1856 add module binascii; add r_unload/s_unload; don't change 'rb' to 'r' in open Guido van Rossum <guido@python.org> parents: 2926 diff changeset	525 return open(file, mode, buf)
2926 4a53483939c1 added sys.std files, read-only open, reload Guido van Rossum <guido@python.org> parents: 2886 diff changeset	526
8655 ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	527 # Restricted version of sys.exc_info()
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	528
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	529 def r_exc_info(self):
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	530 ty, va, tr = sys.exc_info()
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	531 tr = None
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	532 return ty, va, tr
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	533
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	534
4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	535 def test():
19231 e29ba8f1e7f8 Remove redundant import (PyChecker). Guido van Rossum <guido@python.org> parents: 19045 diff changeset	536 import getopt, traceback
8655 ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	537 opts, args = getopt.getopt(sys.argv[1:], 'vt:')
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	538 verbose = 0
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	539 trusted = []
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	540 for o, a in opts:
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	541 if o == '-v':
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	542 verbose = verbose+1
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	543 if o == '-t':
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	544 trusted.append(a)
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	545 r = RExec(verbose=verbose)
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	546 if trusted:
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	547 r.ok_builtin_modules = r.ok_builtin_modules + tuple(trusted)
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	548 if args:
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	549 r.modules['sys'].argv = args
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	550 r.modules['sys'].path.insert(0, os.path.dirname(args[0]))
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	551 else:
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	552 r.modules['sys'].path.insert(0, "")
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	553 fp = sys.stdin
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	554 if args and args[0] != '-':
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	555 try:
8655 ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	556 fp = open(args[0])
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	557 except IOError, msg:
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	558 print "%s: can't open file %s" % (sys.argv[0], `args[0]`)
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	559 return 1
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	560 if fp.isatty():
23862 b79d43305c72 Don't poorly emulate the interactive interpreter, use Guido van Rossum <guido@python.org> parents: 23620 diff changeset	561 try:
25273 98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	562 import readline
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	563 except ImportError:
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	564 pass
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	565 import code
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	566 class RestrictedConsole(code.InteractiveConsole):
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	567 def runcode(self, co):
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	568 self.locals['__builtins__'] = r.modules['__builtin__']
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	569 r.s_apply(code.InteractiveConsole.runcode, (self, co))
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	570 try:
98e12aa8c547 Address SF bug #577530: del __builtins__ breaks out of rexec Guido van Rossum <guido@python.org> parents: 23864 diff changeset	571 RestrictedConsole(r.modules['__main__'].__dict__).interact()
23862 b79d43305c72 Don't poorly emulate the interactive interpreter, use Guido van Rossum <guido@python.org> parents: 23620 diff changeset	572 except SystemExit, n:
b79d43305c72 Don't poorly emulate the interactive interpreter, use Guido van Rossum <guido@python.org> parents: 23620 diff changeset	573 return n
8655 ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	574 else:
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	575 text = fp.read()
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	576 fp.close()
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	577 c = compile(text, fp.name, 'exec')
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	578 try:
ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	579 r.s_exec(c)
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	580 except SystemExit, n:
8655 ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	581 return n
7756 a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	582 except:
a419334f3b39 A few lines were indented using tabs instead of spaces -- fix them. Guido van Rossum <guido@python.org> parents: 6518 diff changeset	583 traceback.print_exc()
8655 ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	584 return 1
2886 21e105460a49 new package support, import hooks, restricted execution support Guido van Rossum <guido@python.org> parents: 2776 diff changeset	585
2135 4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	586
4f90b474beec new files Guido van Rossum <guido@python.org> parents: diff changeset	587 if __name__ == '__main__':
8655 ed0a38cbc3e6 (1) Added a sys.exc_info() emulation. (It returns None for the traceback.) Guido van Rossum <guido@python.org> parents: 8587 diff changeset	588 sys.exit(test())

Mercurial > cpython-lru_cache-weakref

annotate Lib/rexec.py @ 27998:e27f58a50737 legacy-trunk