/usr/share/pyshared/openid/urinorm.py is in python-openid 2.2.5-3ubuntu1.
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 | import re
# from appendix B of rfc 3986 (http://www.ietf.org/rfc/rfc3986.txt)
uri_pattern = r'^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?'
uri_re = re.compile(uri_pattern)
# gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@"
#
# sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
# / "*" / "+" / "," / ";" / "="
#
# unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
uri_illegal_char_re = re.compile(
"[^-A-Za-z0-9:/?#[\]@!$&'()*+,;=._~%]", re.UNICODE)
authority_pattern = r'^([^@]*@)?([^:]*)(:.*)?'
authority_re = re.compile(authority_pattern)
pct_encoded_pattern = r'%([0-9A-Fa-f]{2})'
pct_encoded_re = re.compile(pct_encoded_pattern)
try:
unichr(0x10000)
except ValueError:
# narrow python build
UCSCHAR = [
(0xA0, 0xD7FF),
(0xF900, 0xFDCF),
(0xFDF0, 0xFFEF),
]
IPRIVATE = [
(0xE000, 0xF8FF),
]
else:
UCSCHAR = [
(0xA0, 0xD7FF),
(0xF900, 0xFDCF),
(0xFDF0, 0xFFEF),
(0x10000, 0x1FFFD),
(0x20000, 0x2FFFD),
(0x30000, 0x3FFFD),
(0x40000, 0x4FFFD),
(0x50000, 0x5FFFD),
(0x60000, 0x6FFFD),
(0x70000, 0x7FFFD),
(0x80000, 0x8FFFD),
(0x90000, 0x9FFFD),
(0xA0000, 0xAFFFD),
(0xB0000, 0xBFFFD),
(0xC0000, 0xCFFFD),
(0xD0000, 0xDFFFD),
(0xE1000, 0xEFFFD),
]
IPRIVATE = [
(0xE000, 0xF8FF),
(0xF0000, 0xFFFFD),
(0x100000, 0x10FFFD),
]
_unreserved = [False] * 256
for _ in range(ord('A'), ord('Z') + 1): _unreserved[_] = True
for _ in range(ord('0'), ord('9') + 1): _unreserved[_] = True
for _ in range(ord('a'), ord('z') + 1): _unreserved[_] = True
_unreserved[ord('-')] = True
_unreserved[ord('.')] = True
_unreserved[ord('_')] = True
_unreserved[ord('~')] = True
_escapeme_re = re.compile('[%s]' % (''.join(
map(lambda (m, n): u'%s-%s' % (unichr(m), unichr(n)),
UCSCHAR + IPRIVATE)),))
def _pct_escape_unicode(char_match):
c = char_match.group()
return ''.join(['%%%X' % (ord(octet),) for octet in c.encode('utf-8')])
def _pct_encoded_replace_unreserved(mo):
try:
i = int(mo.group(1), 16)
if _unreserved[i]:
return chr(i)
else:
return mo.group().upper()
except ValueError:
return mo.group()
def _pct_encoded_replace(mo):
try:
return chr(int(mo.group(1), 16))
except ValueError:
return mo.group()
def remove_dot_segments(path):
result_segments = []
while path:
if path.startswith('../'):
path = path[3:]
elif path.startswith('./'):
path = path[2:]
elif path.startswith('/./'):
path = path[2:]
elif path == '/.':
path = '/'
elif path.startswith('/../'):
path = path[3:]
if result_segments:
result_segments.pop()
elif path == '/..':
path = '/'
if result_segments:
result_segments.pop()
elif path == '..' or path == '.':
path = ''
else:
i = 0
if path[0] == '/':
i = 1
i = path.find('/', i)
if i == -1:
i = len(path)
result_segments.append(path[:i])
path = path[i:]
return ''.join(result_segments)
def urinorm(uri):
if isinstance(uri, unicode):
uri = _escapeme_re.sub(_pct_escape_unicode, uri).encode('ascii')
illegal_mo = uri_illegal_char_re.search(uri)
if illegal_mo:
raise ValueError('Illegal characters in URI: %r at position %s' %
(illegal_mo.group(), illegal_mo.start()))
uri_mo = uri_re.match(uri)
scheme = uri_mo.group(2)
if scheme is None:
raise ValueError('No scheme specified')
scheme = scheme.lower()
if scheme not in ('http', 'https'):
raise ValueError('Not an absolute HTTP or HTTPS URI: %r' % (uri,))
authority = uri_mo.group(4)
if authority is None:
raise ValueError('Not an absolute URI: %r' % (uri,))
authority_mo = authority_re.match(authority)
if authority_mo is None:
raise ValueError('URI does not have a valid authority: %r' % (uri,))
userinfo, host, port = authority_mo.groups()
if userinfo is None:
userinfo = ''
if '%' in host:
host = host.lower()
host = pct_encoded_re.sub(_pct_encoded_replace, host)
host = unicode(host, 'utf-8').encode('idna')
else:
host = host.lower()
if port:
if (port == ':' or
(scheme == 'http' and port == ':80') or
(scheme == 'https' and port == ':443')):
port = ''
else:
port = ''
authority = userinfo + host + port
path = uri_mo.group(5)
path = pct_encoded_re.sub(_pct_encoded_replace_unreserved, path)
path = remove_dot_segments(path)
if not path:
path = '/'
query = uri_mo.group(6)
if query is None:
query = ''
fragment = uri_mo.group(8)
if fragment is None:
fragment = ''
return scheme + '://' + authority + path + query + fragment
|