/usr/lib/python2.7/dist-packages/autobahn/wamp/uri.py is in python-autobahn 0.10.3+dfsg1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 | ###############################################################################
#
# The MIT License (MIT)
#
# Copyright (c) Tavendo GmbH
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
###############################################################################
import re
import six
from autobahn.wamp.types import SubscribeOptions
__all__ = ('Pattern',)
class Pattern(object):
"""
A WAMP URI Pattern.
.. todo::
* suffix matches
* args + kwargs
* uuid converter
* multiple URI patterns per decorated object
* classes: Pattern, EndpointPattern, ..
"""
URI_TARGET_ENDPOINT = 1
URI_TARGET_HANDLER = 2
URI_TARGET_EXCEPTION = 3
URI_TYPE_EXACT = 1
URI_TYPE_PREFIX = 2
URI_TYPE_WILDCARD = 3
_URI_COMPONENT = re.compile(r"^[a-z0-9][a-z0-9_\-]*$")
"""
Compiled regular expression for a WAMP URI component.
"""
_URI_NAMED_COMPONENT = re.compile(r"^<([a-z][a-z0-9_]*)>$")
"""
Compiled regular expression for a named WAMP URI component.
.. note::
This pattern is stricter than a general WAMP URI component since a valid Python identifier is required.
"""
_URI_NAMED_CONVERTED_COMPONENT = re.compile(r"^<([a-z][a-z0-9_]*):([a-z]*)>$")
"""
Compiled regular expression for a named and type-converted WAMP URI component.
.. note::
This pattern is stricter than a general WAMP URI component since a valid Python identifier is required.
"""
def __init__(self, uri, target):
"""
:param uri: The URI or URI pattern, e.g. ``"com.myapp.product.<product:int>.update"``.
:type uri: unicode
:param target: The target for this pattern: a procedure endpoint (a callable),
an event handler (a callable) or an exception (a class).
:type target: callable or obj
"""
assert(type(uri) == six.text_type)
assert(target in [Pattern.URI_TARGET_ENDPOINT,
Pattern.URI_TARGET_HANDLER,
Pattern.URI_TARGET_EXCEPTION])
components = uri.split('.')
pl = []
nc = {}
for i in range(len(components)):
component = components[i]
match = Pattern._URI_NAMED_CONVERTED_COMPONENT.match(component)
if match:
ctype = match.groups()[1]
if ctype not in ['string', 'int', 'suffix']:
raise Exception("invalid URI")
if ctype == 'suffix' and i != len(components) - 1:
raise Exception("invalid URI")
name = match.groups()[0]
if name in nc:
raise Exception("invalid URI")
if ctype in ['string', 'suffix']:
nc[name] = str
elif ctype == 'int':
nc[name] = int
else:
# should not arrive here
raise Exception("logic error")
pl.append("(?P<{0}>[a-z0-9_]+)".format(name))
continue
match = Pattern._URI_NAMED_COMPONENT.match(component)
if match:
name = match.groups()[0]
if name in nc:
raise Exception("invalid URI")
nc[name] = str
pl.append("(?P<{0}>[a-z][a-z0-9_]*)".format(name))
continue
match = Pattern._URI_COMPONENT.match(component)
if match:
pl.append(component)
continue
raise Exception("invalid URI")
if nc:
# URI pattern
self._type = Pattern.URI_TYPE_WILDCARD
p = "^" + "\.".join(pl) + "$"
self._pattern = re.compile(p)
self._names = nc
else:
# exact URI
self._type = Pattern.URI_TYPE_EXACT
self._pattern = None
self._names = None
self._uri = uri
self._target = target
def uri(self):
"""
Returns the original URI (pattern) for this pattern.
:returns: The URI (pattern), e.g. ``"com.myapp.product.<product:int>.update"``.
:rtype: unicode
"""
return self._uri
def subscribe_options(self):
if self._type == Pattern.URI_TYPE_WILDCARD:
return SubscribeOptions(match=u"wildcard")
else:
return SubscribeOptions(match=u"exact")
def match(self, uri):
"""
Match the given (fully qualified) URI according to this pattern
and return extracted args and kwargs.
:param uri: The URI to match, e.g. ``"com.myapp.product.123456.update"``.
:type uri: unicode
:returns: A tuple ``(args, kwargs)``
:rtype: tuple
"""
args = []
kwargs = {}
if self._type == Pattern.URI_TYPE_EXACT:
return args, kwargs
elif self._type == Pattern.URI_TYPE_WILDCARD:
match = self._pattern.match(uri)
if match:
for key in self._names:
val = match.group(key)
val = self._names[key](val)
kwargs[key] = val
return args, kwargs
else:
raise Exception("no match")
def is_endpoint(self):
"""
Check if this pattern is for a procedure endpoint.
:returns: ``True``, iff this pattern is for a procedure endpoint.
:rtype: bool
"""
return self._target == Pattern.URI_TARGET_ENDPOINT
def is_handler(self):
"""
Check if this pattern is for an event handler.
:returns: ``True``, iff this pattern is for an event handler.
:rtype: bool
"""
return self._target == Pattern.URI_TARGET_HANDLER
def is_exception(self):
"""
Check if this pattern is for an exception.
:returns: ``True``, iff this pattern is for an exception.
:rtype: bool
"""
return self._target == Pattern.URI_TARGET_EXCEPTION
|