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
|
"""
Testbed for figuring out how to write asynchronous HTTPS code.
$Id$
Copyright (C) 2009 Internet Systems Consortium ("ISC")
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
"""
# Command that may be useful for testing server side of this:
#
# lynx -post_data -mime_header -source http://127.0.0.1:8000/
import sys, os, time, socket, fcntl, asyncore, asynchat, getopt, email, traceback
class http_message(object):
@classmethod
def parse_from_wire(cls, headers):
self = cls()
headers = headers.split("\r\n")
self.parse_first_line(*headers.pop(0).split(None, 2))
for i in xrange(len(headers) - 2, -1, -1):
if headers[i + 1][0].isspace():
headers[i] += headers[i + 1]
del headers[i + 1]
headers = [h.split(":", 1) for h in headers]
self.headers = dict((k.lower(), v) for (k,v) in headers)
return self
def format(self):
s = self.format_first_line()
if self.body is not None:
assert isinstance(self.body, str)
self.headers["content-length"] = len(self.body)
for kv in self.headers.iteritems():
s += "%s: %s\r\n" % kv
s += "\r\n"
if self.body is not None:
s += self.body
return s
def __str__(self):
return self.format()
def parse_version(self, version):
if version[:5] != "HTTP/":
raise RuntimeError
self.version = tuple(int(i) for i in version[5:].split("."))
class http_request(http_message):
def __init__(self, cmd = None, path = None, version = (1,0), body = None, headers = None):
self.cmd = cmd
self.path = path
self.version = version
self.body = body
self.headers = {} if headers is None else headers
def parse_first_line(self, cmd, path, version):
self.parse_version(version)
self.cmd = cmd.upper()
self.path = path
def format_first_line(self):
return "%s %s HTTPS/%d.%d\r\n" % (self.cmd, self.path, self.version[0], self.version[1])
class http_response(http_message):
def __init__(self, code = None, msg = None, version = (1,0), body = None, headers = None):
self.code = code
self.msg = msg
self.version = version
self.body = body
self.headers = {} if headers is None else headers
def parse_first_line(self, version, code, msg):
self.parse_version(version)
self.code = int(code)
self.msg = msg
def format_first_line(self):
return "HTTPS/%d.%d %s %s\r\n" % (self.version[0], self.version[1], self.code, self.msg)
class http_server(asynchat.async_chat):
def __init__(self, conn):
asynchat.async_chat.__init__(self, conn = conn)
self.buffer = []
self.set_terminator("\r\n\r\n")
def reading_headers(self):
return isinstance(self.get_terminator(), str)
def reading_body(self):
return isinstance(self.get_terminator(), int)
def collect_incoming_data(self, data):
"""Buffer the data"""
self.buffer.append(data)
def get_buffer(self):
val = "".join(self.buffer)
self.buffer = []
return val
def found_terminator(self):
if self.reading_headers():
return self.handle_headers()
if self.reading_body():
return self.handle_body()
raise RuntimeError
def handle_headers(self):
self.msg = http_request.parse_from_wire(self.get_buffer())
if self.msg.cmd == "POST":
self.set_terminator(int(self.msg.headers["content-length"]))
else:
self.handle_message()
def handle_body(self):
self.msg.body = self.get_buffer()
assert len(self.msg.body) == int(self.msg.headers["content-length"])
self.handle_message()
def handle_message(self):
self.push(http_response(code = 200, msg = "OK", body = self.msg.format(), headers = { "content-type" : "text/plain" }).format())
self.close_when_done()
def handle_error(self):
print traceback.format_exc()
asyncore.close_all()
class http_listener(asyncore.dispatcher):
def __init__(self):
asyncore.dispatcher.__init__(self)
self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
self.bind(("", 8000))
self.listen(5)
def handle_accept(self):
server = http_server(self.accept()[0])
def handle_error(self):
print traceback.format_exc()
asyncore.close_all()
listener = http_listener()
asyncore.loop()
|
