second commit
This commit is contained in:
304
env/lib/python3.11/site-packages/mdurl/_parse.py
vendored
Normal file
304
env/lib/python3.11/site-packages/mdurl/_parse.py
vendored
Normal file
@ -0,0 +1,304 @@
|
||||
# Copyright Joyent, Inc. and other Node contributors.
|
||||
#
|
||||
# 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.
|
||||
|
||||
|
||||
# Changes from joyent/node:
|
||||
#
|
||||
# 1. No leading slash in paths,
|
||||
# e.g. in `url.parse('http://foo?bar')` pathname is ``, not `/`
|
||||
#
|
||||
# 2. Backslashes are not replaced with slashes,
|
||||
# so `http:\\example.org\` is treated like a relative path
|
||||
#
|
||||
# 3. Trailing colon is treated like a part of the path,
|
||||
# i.e. in `http://example.org:foo` pathname is `:foo`
|
||||
#
|
||||
# 4. Nothing is URL-encoded in the resulting object,
|
||||
# (in joyent/node some chars in auth and paths are encoded)
|
||||
#
|
||||
# 5. `url.parse()` does not have `parseQueryString` argument
|
||||
#
|
||||
# 6. Removed extraneous result properties: `host`, `path`, `query`, etc.,
|
||||
# which can be constructed using other parts of the url.
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
from collections import defaultdict
|
||||
import re
|
||||
|
||||
from mdurl._url import URL
|
||||
|
||||
# Reference: RFC 3986, RFC 1808, RFC 2396
|
||||
|
||||
# define these here so at least they only have to be
|
||||
# compiled once on the first module load.
|
||||
PROTOCOL_PATTERN = re.compile(r"^([a-z0-9.+-]+:)", flags=re.IGNORECASE)
|
||||
PORT_PATTERN = re.compile(r":[0-9]*$")
|
||||
|
||||
# Special case for a simple path URL
|
||||
SIMPLE_PATH_PATTERN = re.compile(r"^(//?(?!/)[^?\s]*)(\?[^\s]*)?$")
|
||||
|
||||
# RFC 2396: characters reserved for delimiting URLs.
|
||||
# We actually just auto-escape these.
|
||||
DELIMS = ("<", ">", '"', "`", " ", "\r", "\n", "\t")
|
||||
|
||||
# RFC 2396: characters not allowed for various reasons.
|
||||
UNWISE = ("{", "}", "|", "\\", "^", "`") + DELIMS
|
||||
|
||||
# Allowed by RFCs, but cause of XSS attacks. Always escape these.
|
||||
AUTO_ESCAPE = ("'",) + UNWISE
|
||||
# Characters that are never ever allowed in a hostname.
|
||||
# Note that any invalid chars are also handled, but these
|
||||
# are the ones that are *expected* to be seen, so we fast-path
|
||||
# them.
|
||||
NON_HOST_CHARS = ("%", "/", "?", ";", "#") + AUTO_ESCAPE
|
||||
HOST_ENDING_CHARS = ("/", "?", "#")
|
||||
HOSTNAME_MAX_LEN = 255
|
||||
HOSTNAME_PART_PATTERN = re.compile(r"^[+a-z0-9A-Z_-]{0,63}$")
|
||||
HOSTNAME_PART_START = re.compile(r"^([+a-z0-9A-Z_-]{0,63})(.*)$")
|
||||
# protocols that can allow "unsafe" and "unwise" chars.
|
||||
|
||||
# protocols that never have a hostname.
|
||||
HOSTLESS_PROTOCOL = defaultdict(
|
||||
bool,
|
||||
{
|
||||
"javascript": True,
|
||||
"javascript:": True,
|
||||
},
|
||||
)
|
||||
# protocols that always contain a // bit.
|
||||
SLASHED_PROTOCOL = defaultdict(
|
||||
bool,
|
||||
{
|
||||
"http": True,
|
||||
"https": True,
|
||||
"ftp": True,
|
||||
"gopher": True,
|
||||
"file": True,
|
||||
"http:": True,
|
||||
"https:": True,
|
||||
"ftp:": True,
|
||||
"gopher:": True,
|
||||
"file:": True,
|
||||
},
|
||||
)
|
||||
|
||||
|
||||
class MutableURL:
|
||||
def __init__(self) -> None:
|
||||
self.protocol: str | None = None
|
||||
self.slashes: bool = False
|
||||
self.auth: str | None = None
|
||||
self.port: str | None = None
|
||||
self.hostname: str | None = None
|
||||
self.hash: str | None = None
|
||||
self.search: str | None = None
|
||||
self.pathname: str | None = None
|
||||
|
||||
def parse(self, url: str, slashes_denote_host: bool) -> "MutableURL":
|
||||
lower_proto = ""
|
||||
slashes = False
|
||||
rest = url
|
||||
|
||||
# trim before proceeding.
|
||||
# This is to support parse stuff like " http://foo.com \n"
|
||||
rest = rest.strip()
|
||||
|
||||
if not slashes_denote_host and len(url.split("#")) == 1:
|
||||
# Try fast path regexp
|
||||
simple_path = SIMPLE_PATH_PATTERN.match(rest)
|
||||
if simple_path:
|
||||
self.pathname = simple_path.group(1)
|
||||
if simple_path.group(2):
|
||||
self.search = simple_path.group(2)
|
||||
return self
|
||||
|
||||
proto = ""
|
||||
proto_match = PROTOCOL_PATTERN.match(rest)
|
||||
if proto_match:
|
||||
proto = proto_match.group()
|
||||
lower_proto = proto.lower()
|
||||
self.protocol = proto
|
||||
rest = rest[len(proto) :]
|
||||
|
||||
# figure out if it's got a host
|
||||
# user@server is *always* interpreted as a hostname, and url
|
||||
# resolution will treat //foo/bar as host=foo,path=bar because that's
|
||||
# how the browser resolves relative URLs.
|
||||
if slashes_denote_host or proto or re.search(r"^//[^@/]+@[^@/]+", rest):
|
||||
slashes = rest.startswith("//")
|
||||
if slashes and not (proto and HOSTLESS_PROTOCOL[proto]):
|
||||
rest = rest[2:]
|
||||
self.slashes = True
|
||||
|
||||
if not HOSTLESS_PROTOCOL[proto] and (
|
||||
slashes or (proto and not SLASHED_PROTOCOL[proto])
|
||||
):
|
||||
|
||||
# there's a hostname.
|
||||
# the first instance of /, ?, ;, or # ends the host.
|
||||
#
|
||||
# If there is an @ in the hostname, then non-host chars *are* allowed
|
||||
# to the left of the last @ sign, unless some host-ending character
|
||||
# comes *before* the @-sign.
|
||||
# URLs are obnoxious.
|
||||
#
|
||||
# ex:
|
||||
# http://a@b@c/ => user:a@b host:c
|
||||
# http://a@b?@c => user:a host:c path:/?@c
|
||||
|
||||
# v0.12 TODO(isaacs): This is not quite how Chrome does things.
|
||||
# Review our test case against browsers more comprehensively.
|
||||
|
||||
# find the first instance of any hostEndingChars
|
||||
host_end = -1
|
||||
for i in range(len(HOST_ENDING_CHARS)):
|
||||
hec = rest.find(HOST_ENDING_CHARS[i])
|
||||
if hec != -1 and (host_end == -1 or hec < host_end):
|
||||
host_end = hec
|
||||
|
||||
# at this point, either we have an explicit point where the
|
||||
# auth portion cannot go past, or the last @ char is the decider.
|
||||
if host_end == -1:
|
||||
# atSign can be anywhere.
|
||||
at_sign = rest.rfind("@")
|
||||
else:
|
||||
# atSign must be in auth portion.
|
||||
# http://a@b/c@d => host:b auth:a path:/c@d
|
||||
at_sign = rest.rfind("@", 0, host_end + 1)
|
||||
|
||||
# Now we have a portion which is definitely the auth.
|
||||
# Pull that off.
|
||||
if at_sign != -1:
|
||||
auth = rest[:at_sign]
|
||||
rest = rest[at_sign + 1 :]
|
||||
self.auth = auth
|
||||
|
||||
# the host is the remaining to the left of the first non-host char
|
||||
host_end = -1
|
||||
for i in range(len(NON_HOST_CHARS)):
|
||||
hec = rest.find(NON_HOST_CHARS[i])
|
||||
if hec != -1 and (host_end == -1 or hec < host_end):
|
||||
host_end = hec
|
||||
# if we still have not hit it, then the entire thing is a host.
|
||||
if host_end == -1:
|
||||
host_end = len(rest)
|
||||
|
||||
if host_end > 0 and rest[host_end - 1] == ":":
|
||||
host_end -= 1
|
||||
host = rest[:host_end]
|
||||
rest = rest[host_end:]
|
||||
|
||||
# pull out port.
|
||||
self.parse_host(host)
|
||||
|
||||
# we've indicated that there is a hostname,
|
||||
# so even if it's empty, it has to be present.
|
||||
self.hostname = self.hostname or ""
|
||||
|
||||
# if hostname begins with [ and ends with ]
|
||||
# assume that it's an IPv6 address.
|
||||
ipv6_hostname = self.hostname.startswith("[") and self.hostname.endswith(
|
||||
"]"
|
||||
)
|
||||
|
||||
# validate a little.
|
||||
if not ipv6_hostname:
|
||||
hostparts = self.hostname.split(".")
|
||||
l = len(hostparts) # noqa: E741
|
||||
i = 0
|
||||
while i < l:
|
||||
part = hostparts[i]
|
||||
if not part:
|
||||
i += 1 # emulate statement3 in JS for loop
|
||||
continue
|
||||
if not HOSTNAME_PART_PATTERN.search(part):
|
||||
newpart = ""
|
||||
k = len(part)
|
||||
j = 0
|
||||
while j < k:
|
||||
if ord(part[j]) > 127:
|
||||
# we replace non-ASCII char with a temporary placeholder
|
||||
# we need this to make sure size of hostname is not
|
||||
# broken by replacing non-ASCII by nothing
|
||||
newpart += "x"
|
||||
else:
|
||||
newpart += part[j]
|
||||
j += 1 # emulate statement3 in JS for loop
|
||||
|
||||
# we test again with ASCII char only
|
||||
if not HOSTNAME_PART_PATTERN.search(newpart):
|
||||
valid_parts = hostparts[:i]
|
||||
not_host = hostparts[i + 1 :]
|
||||
bit = HOSTNAME_PART_START.search(part)
|
||||
if bit:
|
||||
valid_parts.append(bit.group(1))
|
||||
not_host.insert(0, bit.group(2))
|
||||
if not_host:
|
||||
rest = ".".join(not_host) + rest
|
||||
self.hostname = ".".join(valid_parts)
|
||||
break
|
||||
i += 1 # emulate statement3 in JS for loop
|
||||
|
||||
if len(self.hostname) > HOSTNAME_MAX_LEN:
|
||||
self.hostname = ""
|
||||
|
||||
# strip [ and ] from the hostname
|
||||
# the host field still retains them, though
|
||||
if ipv6_hostname:
|
||||
self.hostname = self.hostname[1:-1]
|
||||
|
||||
# chop off from the tail first.
|
||||
hash = rest.find("#") # noqa: A001
|
||||
if hash != -1:
|
||||
# got a fragment string.
|
||||
self.hash = rest[hash:]
|
||||
rest = rest[:hash]
|
||||
qm = rest.find("?")
|
||||
if qm != -1:
|
||||
self.search = rest[qm:]
|
||||
rest = rest[:qm]
|
||||
if rest:
|
||||
self.pathname = rest
|
||||
if SLASHED_PROTOCOL[lower_proto] and self.hostname and not self.pathname:
|
||||
self.pathname = ""
|
||||
|
||||
return self
|
||||
|
||||
def parse_host(self, host: str) -> None:
|
||||
port_match = PORT_PATTERN.search(host)
|
||||
if port_match:
|
||||
port = port_match.group()
|
||||
if port != ":":
|
||||
self.port = port[1:]
|
||||
host = host[: -len(port)]
|
||||
if host:
|
||||
self.hostname = host
|
||||
|
||||
|
||||
def url_parse(url: URL | str, *, slashes_denote_host: bool = False) -> URL:
|
||||
if isinstance(url, URL):
|
||||
return url
|
||||
u = MutableURL()
|
||||
u.parse(url, slashes_denote_host)
|
||||
return URL(
|
||||
u.protocol, u.slashes, u.auth, u.port, u.hostname, u.hash, u.search, u.pathname
|
||||
)
|
||||
Reference in New Issue
Block a user