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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
|
import pyparsing as pp
from netlib import http
from netlib.http import user_agents, Headers
from . import base, message
"""
Normal HTTP requests:
<method>:<path>:<header>:<body>
e.g.:
GET:/
GET:/:h"foo"="bar"
POST:/:h"foo"="bar":b'content body payload'
Normal HTTP responses:
<code>:<header>:<body>
e.g.:
200
302:h"foo"="bar"
404:h"foo"="bar":b'content body payload'
Individual HTTP/2 frames:
h2f:<payload_length>:<type>:<flags>:<stream_id>:<payload>
e.g.:
h2f:0:PING
h2f:42:HEADERS:END_HEADERS:0x1234567:foo=bar,host=example.com
h2f:42:DATA:END_STREAM,PADDED:0x1234567:'content body payload'
"""
def get_header(val, headers):
"""
Header keys may be Values, so we have to "generate" them as we try the
match.
"""
for h in headers:
k = h.key.get_generator({})
if len(k) == len(val) and k[:].lower() == val.lower():
return h
return None
class _HeaderMixin(object):
unique_name = None
def values(self, settings):
return (
self.key.get_generator(settings),
self.value.get_generator(settings),
)
class _HTTP2Message(message.Message):
@property
def actions(self):
return [] # self.toks(actions._Action)
@property
def headers(self):
headers = self.toks(_HeaderMixin)
if not self.raw:
if not get_header("content-length", headers):
if not self.body:
length = 0
else:
length = len(self.body.string())
headers.append(
Header(
base.TokValueLiteral("content-length"),
base.TokValueLiteral(str(length)),
)
)
return headers
@property
def raw(self):
return bool(self.tok(Raw))
@property
def body(self):
return self.tok(Body)
def resolve(self, settings):
return self
class StatusCode(base.Integer):
pass
class Method(base.OptionsOrValue):
options = [
"GET",
"HEAD",
"POST",
"PUT",
"DELETE",
]
class Path(base.Value):
pass
class Header(_HeaderMixin, base.KeyValue):
preamble = "h"
class ShortcutContentType(_HeaderMixin, base.Value):
preamble = "c"
key = base.TokValueLiteral("content-type")
class ShortcutLocation(_HeaderMixin, base.Value):
preamble = "l"
key = base.TokValueLiteral("location")
class ShortcutUserAgent(_HeaderMixin, base.OptionsOrValue):
preamble = "u"
options = [i[1] for i in user_agents.UASTRINGS]
key = base.TokValueLiteral("user-agent")
def values(self, settings):
value = self.value.val
if self.option_used:
value = user_agents.get_by_shortcut(value.lower())[2]
return (
self.key.get_generator(settings),
value
)
class Raw(base.CaselessLiteral):
TOK = "r"
class Body(base.Value):
preamble = "b"
class Times(base.Integer):
preamble = "x"
class Response(_HTTP2Message):
unique_name = None
comps = (
Header,
Body,
ShortcutContentType,
ShortcutLocation,
Raw,
)
def __init__(self, tokens):
super(Response, self).__init__(tokens)
self.rendered_values = None
self.stream_id = 2
@property
def status_code(self):
return self.tok(StatusCode)
@classmethod
def expr(cls):
parts = [i.expr() for i in cls.comps]
atom = pp.MatchFirst(parts)
resp = pp.And(
[
StatusCode.expr(),
pp.ZeroOrMore(base.Sep + atom)
]
)
resp = resp.setParseAction(cls)
return resp
def values(self, settings):
if self.rendered_values:
return self.rendered_values
else:
headers = Headers([header.values(settings) for header in self.headers])
body = self.body
if body:
body = body.string()
resp = http.Response(
(2, 0),
self.status_code.string(),
'',
headers,
body,
)
resp.stream_id = self.stream_id
self.rendered_values = settings.protocol.assemble(resp)
return self.rendered_values
def spec(self):
return ":".join([i.spec() for i in self.tokens])
class NestedResponse(base.NestedMessage):
preamble = "s"
nest_type = Response
class Request(_HTTP2Message):
comps = (
Header,
ShortcutContentType,
ShortcutUserAgent,
Raw,
NestedResponse,
Body,
Times,
)
logattrs = ["method", "path"]
def __init__(self, tokens):
super(Request, self).__init__(tokens)
self.rendered_values = None
self.stream_id = 1
@property
def method(self):
return self.tok(Method)
@property
def path(self):
return self.tok(Path)
@property
def nested_response(self):
return self.tok(NestedResponse)
@property
def times(self):
return self.tok(Times)
@classmethod
def expr(cls):
parts = [i.expr() for i in cls.comps]
atom = pp.MatchFirst(parts)
resp = pp.And(
[
Method.expr(),
base.Sep,
Path.expr(),
pp.ZeroOrMore(base.Sep + atom)
]
)
resp = resp.setParseAction(cls)
return resp
def values(self, settings):
if self.rendered_values:
return self.rendered_values
else:
path = self.path.string()
if self.nested_response:
path += self.nested_response.parsed.spec()
headers = Headers([header.values(settings) for header in self.headers])
body = self.body
if body:
body = body.string()
req = http.Request(
'',
self.method.string(),
'',
'',
'',
path,
(2, 0),
headers,
body,
)
req.stream_id = self.stream_id
self.rendered_values = settings.protocol.assemble(req)
return self.rendered_values
def spec(self):
return ":".join([i.spec() for i in self.tokens])
def make_error_response(reason, body=None):
tokens = [
StatusCode("800"),
Body(base.TokValueLiteral("pathod error: " + (body or reason))),
]
return Response(tokens)
|
