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mockhttp.py
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mockhttp.py
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from __future__ import unicode_literals
import re
import time
from .compat import (
BaseHTTPRequestHandler,
decode_from_bytes,
do_the_magic,
encode_to_bytes,
parse_qs,
unquote_utf8,
urlsplit,
)
from .mocket import Mocket, MocketEntry
try:
from http_parser.parser import HttpParser
except ImportError:
from http_parser.pyparser import HttpParser
try:
import magic
except ImportError:
magic = None
STATUS = dict([(k, v[0]) for k, v in BaseHTTPRequestHandler.responses.items()])
CRLF = "\r\n"
class Request:
parser = None
_body = None
def __init__(self, data):
self.parser = HttpParser()
self.parser.execute(data, len(data))
self.method = self.parser.get_method()
self.path = self.parser.get_path()
self.headers = self.parser.get_headers()
self.querystring = parse_qs(
unquote_utf8(self.parser.get_query_string()), keep_blank_values=True
)
if self.querystring:
self.path += "?{}".format(self.parser.get_query_string())
def add_data(self, data):
self.parser.execute(data, len(data))
@property
def body(self):
if self._body is None:
self._body = decode_from_bytes(self.parser.recv_body())
return self._body
def __str__(self):
return "{} - {} - {}".format(self.method, self.path, self.headers)
class Response(object):
headers = None
is_file_object = False
def __init__(self, body="", status=200, headers=None, lib_magic=magic):
# needed for testing libmagic import failure
self.magic = lib_magic
headers = headers or {}
try:
# File Objects
self.body = body.read()
self.is_file_object = True
except AttributeError:
self.body = encode_to_bytes(body)
self.status = status
self.set_base_headers()
if headers is not None:
self.set_extra_headers(headers)
self.data = self.get_protocol_data() + self.body
def get_protocol_data(self, str_format_fun_name="capitalize"):
status_line = "HTTP/1.1 {status_code} {status}".format(
status_code=self.status, status=STATUS[self.status]
)
header_lines = CRLF.join(
(
"{0}: {1}".format(getattr(k, str_format_fun_name)(), v)
for k, v in self.headers.items()
)
)
return "{0}\r\n{1}\r\n\r\n".format(status_line, header_lines).encode("utf-8")
def set_base_headers(self):
self.headers = {
"Status": str(self.status),
"Date": time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime()),
"Server": "Python/Mocket",
"Connection": "close",
"Content-Length": str(len(self.body)),
}
if not self.is_file_object:
self.headers["Content-Type"] = "text/plain; charset=utf-8"
elif self.magic:
self.headers["Content-Type"] = do_the_magic(self.magic, self.body)
def set_extra_headers(self, headers):
r"""
>>> r = Response(body="<html />")
>>> len(r.headers.keys())
6
>>> r.set_extra_headers({"foo-bar": "Foobar"})
>>> len(r.headers.keys())
7
>>> encode_to_bytes(r.headers.get("Foo-Bar")) == encode_to_bytes("Foobar")
True
"""
for k, v in headers.items():
self.headers["-".join((token.capitalize() for token in k.split("-")))] = v
class Entry(MocketEntry):
CONNECT = "CONNECT"
DELETE = "DELETE"
GET = "GET"
HEAD = "HEAD"
OPTIONS = "OPTIONS"
PATCH = "PATCH"
POST = "POST"
PUT = "PUT"
TRACE = "TRACE"
METHODS = (CONNECT, DELETE, GET, HEAD, OPTIONS, PATCH, POST, PUT, TRACE)
request_cls = Request
response_cls = Response
def __init__(self, uri, method, responses, match_querystring=True):
uri = urlsplit(uri)
if not uri.port:
if uri.scheme == "https":
port = 443
else:
port = 80
super(Entry, self).__init__((uri.hostname, uri.port or port), responses)
self.schema = uri.scheme
self.path = uri.path
self.query = uri.query
self.method = method.upper()
self._sent_data = b""
self._match_querystring = match_querystring
def collect(self, data):
decoded_data = decode_from_bytes(data)
if not decoded_data.startswith(Entry.METHODS):
Mocket.remove_last_request()
self._sent_data += data
else:
self._sent_data = data
super(Entry, self).collect(self._sent_data)
def can_handle(self, data):
r"""
>>> e = Entry('http://www.github.com/?bar=foo&foobar', Entry.GET, (Response(b'<html/>'),))
>>> e.can_handle(b'GET /?bar=foo HTTP/1.1\r\nHost: github.com\r\nAccept-Encoding: gzip, deflate\r\nConnection: keep-alive\r\nUser-Agent: python-requests/2.7.0 CPython/3.4.3 Linux/3.19.0-16-generic\r\nAccept: */*\r\n\r\n')
False
>>> e = Entry('http://www.github.com/?bar=foo&foobar', Entry.GET, (Response(b'<html/>'),))
>>> e.can_handle(b'GET /?bar=foo&foobar HTTP/1.1\r\nHost: github.com\r\nAccept-Encoding: gzip, deflate\r\nConnection: keep-alive\r\nUser-Agent: python-requests/2.7.0 CPython/3.4.3 Linux/3.19.0-16-generic\r\nAccept: */*\r\n\r\n')
True
"""
try:
requestline, _ = decode_from_bytes(data).split(CRLF, 1)
method, path, version = self._parse_requestline(requestline)
except ValueError:
try:
return self == Mocket._last_entry
except AttributeError:
return False
uri = urlsplit(path)
can_handle = uri.path == self.path and method == self.method
if self._match_querystring:
kw = dict(keep_blank_values=True)
can_handle = can_handle and parse_qs(uri.query, **kw) == parse_qs(
self.query, **kw
)
if can_handle:
Mocket._last_entry = self
return can_handle
@staticmethod
def _parse_requestline(line):
"""
http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5
>>> Entry._parse_requestline('GET / HTTP/1.0') == ('GET', '/', '1.0')
True
>>> Entry._parse_requestline('post /testurl htTP/1.1') == ('POST', '/testurl', '1.1')
True
>>> Entry._parse_requestline('Im not a RequestLine')
Traceback (most recent call last):
...
ValueError: Not a Request-Line
"""
m = re.match(
r"({})\s+(.*)\s+HTTP/(1.[0|1])".format("|".join(Entry.METHODS)), line, re.I
)
if m:
return m.group(1).upper(), m.group(2), m.group(3)
else:
raise ValueError("Not a Request-Line")
@classmethod
def register(cls, method, uri, *responses, **config):
default_config = dict(match_querystring=True, add_trailing_slash=True)
default_config.update(config)
config = default_config
if config["add_trailing_slash"] and not urlsplit(uri).path:
uri += "/"
Mocket.register(
cls(uri, method, responses, match_querystring=config["match_querystring"])
)
@classmethod
def single_register(
cls,
method,
uri,
body="",
status=200,
headers=None,
match_querystring=True,
exception=None,
):
response = (
exception
if exception
else cls.response_cls(body=body, status=status, headers=headers)
)
cls.register(
method, uri, response, match_querystring=match_querystring,
)