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import re
import os
import subprocess
from datetime import datetime
from typing import Dict
from urllib.parse import urlparse
from .result import ExecResult
def _get_path(x):
return x["path"]
class Nghttp:
def __init__(self, path, connect_addr=None, tmp_dir="/tmp",
test_name: str = None):
self.NGHTTP = path
self.CONNECT_ADDR = connect_addr
self.TMP_DIR = tmp_dir
self._test_name = test_name
@staticmethod
def get_stream(streams, sid):
sid = int(sid)
if sid not in streams:
streams[sid] = {
"id": sid,
"header": {},
"request": {
"id": sid,
"body": b''
},
"response": {
"id": sid,
"body": b''
},
"data_lengths": [],
"paddings": [],
"promises": []
}
return streams[sid] if sid in streams else None
def run(self, urls, timeout, options):
return self._baserun(urls, timeout, options)
def complete_args(self, url, _timeout, options: [str]) -> [str]:
if not isinstance(url, list):
url = [url]
u = urlparse(url[0])
args = [self.NGHTTP]
if self.CONNECT_ADDR:
connect_host = self.CONNECT_ADDR
args.append("--header=host: %s:%s" % (u.hostname, u.port))
else:
connect_host = u.hostname
if options:
args.extend(options)
for xurl in url:
xu = urlparse(xurl)
nurl = "%s://%s:%s/%s" % (u.scheme, connect_host, xu.port, xu.path)
if xu.query:
nurl = "%s?%s" % (nurl, xu.query)
args.append(nurl)
return args
def _baserun(self, url, timeout, options):
return self._run(self.complete_args(url, timeout, options))
def parse_output(self, btext) -> Dict:
# getting meta data and response body out of nghttp's output
# is a bit tricky. Without '-v' we just get the body. With '-v' meta
# data and timings in both directions are listed.
# We rely on response :status: to be unique and on
# response body not starting with space.
# Something not good enough for general purpose, but for these tests.
output = {}
body = ''
streams = {}
skip_indents = True
# chunk output into lines. nghttp mixes text
# meta output with bytes from the response body.
lines = [l.decode() for l in btext.split(b'\n')]
for lidx, l in enumerate(lines):
if len(l) == 0:
body += '\n'
continue
m = re.match(r'(.*)\[.*] recv \(stream_id=(\d+)\) (\S+): (\S*)', l)
if m:
body += m.group(1)
s = self.get_stream(streams, m.group(2))
hname = m.group(3)
hval = m.group(4)
print("stream %d header %s: %s" % (s["id"], hname, hval))
header = s["header"]
if hname in header:
header[hname] += ", %s" % hval
else:
header[hname] = hval
continue
m = re.match(r'(.*)\[.*] recv HEADERS frame <.* stream_id=(\d+)>', l)
if m:
body += m.group(1)
s = self.get_stream(streams, m.group(2))
if s:
print("stream %d: recv %d header" % (s["id"], len(s["header"])))
response = s["response"]
hkey = "header"
if "header" in response:
h = response["header"]
if ":status" in h and int(h[":status"]) >= 200:
hkey = "trailer"
else:
prev = {
"header": h
}
if "previous" in response:
prev["previous"] = response["previous"]
response["previous"] = prev
response[hkey] = s["header"]
s["header"] = {}
body = ''
continue
m = re.match(r'(.*)\[.*] recv DATA frame <length=(\d+), .*stream_id=(\d+)>', l)
if m:
body += m.group(1)
s = self.get_stream(streams, m.group(3))
blen = int(m.group(2))
if s:
print(f'stream {s["id"]}: {blen} DATA bytes added via "{l}"')
padlen = 0
if len(lines) > lidx + 2:
mpad = re.match(r' +\(padlen=(\d+)\)', lines[lidx+2])
if mpad:
padlen = int(mpad.group(1))
s["data_lengths"].append(blen)
s["paddings"].append(padlen)
blen -= padlen
s["response"]["body"] += body[-blen:].encode()
body = ''
skip_indents = True
continue
m = re.match(r'(.*)\[.*] recv PUSH_PROMISE frame <.* stream_id=(\d+)>', l)
if m:
body += m.group(1)
s = self.get_stream(streams, m.group(2))
if s:
# headers we have are request headers for the PUSHed stream
# these have been received on the originating stream, the promised
# stream id it mentioned in the following lines
print("stream %d: %d PUSH_PROMISE header" % (s["id"], len(s["header"])))
if len(lines) > lidx+2:
m2 = re.match(r'\s+\(.*promised_stream_id=(\d+)\)', lines[lidx+2])
if m2:
s2 = self.get_stream(streams, m2.group(1))
s2["request"]["header"] = s["header"]
s["promises"].append(s2)
s["header"] = {}
continue
m = re.match(r'(.*)\[.*] recv (\S+) frame <length=(\d+), .*stream_id=(\d+)>', l)
if m:
print("recv frame %s on stream %s" % (m.group(2), m.group(4)))
body += m.group(1)
skip_indents = True
continue
m = re.match(r'(.*)\[.*] send (\S+) frame <length=(\d+), .*stream_id=(\d+)>', l)
if m:
print("send frame %s on stream %s" % (m.group(2), m.group(4)))
body += m.group(1)
skip_indents = True
continue
if skip_indents and l.startswith(' '):
continue
if '[' != l[0]:
skip_indents = None
body += l + '\n'
# the main request is done on the lowest odd numbered id
main_stream = 99999999999
for sid in streams:
s = streams[sid]
if "header" in s["response"] and ":status" in s["response"]["header"]:
s["response"]["status"] = int(s["response"]["header"][":status"])
if (sid % 2) == 1 and sid < main_stream:
main_stream = sid
output["streams"] = streams
if main_stream in streams:
output["response"] = streams[main_stream]["response"]
output["paddings"] = streams[main_stream]["paddings"]
output["data_lengths"] = streams[main_stream]["data_lengths"]
return output
def _raw(self, url, timeout, options):
args = ["-v"]
if self._test_name is not None:
args.append(f'--header=AP-Test-Name: {self._test_name}')
if options:
args.extend(options)
r = self._baserun(url, timeout, args)
if 0 == r.exit_code:
r.add_results(self.parse_output(r.outraw))
return r
def get(self, url, timeout=5, options=None):
return self._raw(url, timeout, options)
def assets(self, url, timeout=5, options=None):
if not options:
options = []
options.extend(["-ans"])
r = self._baserun(url, timeout, options)
assets = []
if 0 == r.exit_code:
lines = re.findall(r'[^\n]*\n', r.stdout, re.MULTILINE)
for lidx, l in enumerate(lines):
m = re.match(r'\s*(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+/(.*)', l)
if m:
assets.append({
"path": m.group(7),
"status": int(m.group(5)),
"size": m.group(6)
})
assets.sort(key=_get_path)
r.add_assets(assets)
return r
def post_data(self, url, data, timeout=5, options=None):
reqbody = ("%s/nghttp.req.body" % self.TMP_DIR)
with open(reqbody, 'wb') as f:
f.write(data.encode('utf-8'))
if not options:
options = []
options.extend(["--data=%s" % reqbody])
return self._raw(url, timeout, options)
def post_name(self, url, name, timeout=5, options=None):
reqbody = ("%s/nghttp.req.body" % self.TMP_DIR)
with open(reqbody, 'w') as f:
f.write("--DSAJKcd9876\n")
f.write("Content-Disposition: form-data; name=\"value\"; filename=\"xxxxx\"\n")
f.write("Content-Type: text/plain\n")
f.write("\n%s\n" % name)
f.write("--DSAJKcd9876\n")
if not options:
options = []
options.extend(["--data=%s" % reqbody])
return self._raw(url, timeout, options)
def upload(self, url, fpath, timeout=5, options=None):
if not options:
options = []
options.extend(["--data=%s" % fpath])
return self._raw(url, timeout, options)
def upload_file(self, url, fpath, timeout=5, options=None):
fname = os.path.basename(fpath)
reqbody = ("%s/nghttp.req.body" % self.TMP_DIR)
with open(fpath, 'rb') as fin:
with open(reqbody, 'wb') as f:
f.write(("""--DSAJKcd9876
Content-Disposition: form-data; name="xxx"; filename="xxxxx"
Content-Type: text/plain
testing mod_h2
--DSAJKcd9876
Content-Disposition: form-data; name="file"; filename="%s"
Content-Type: application/octet-stream
Content-Transfer-Encoding: binary
""" % fname).encode('utf-8'))
f.write(fin.read())
f.write("""
--DSAJKcd9876""".encode('utf-8'))
if not options:
options = []
options.extend([
"--data=%s" % reqbody,
"--expect-continue",
"-HContent-Type: multipart/form-data; boundary=DSAJKcd9876"])
return self._raw(url, timeout, options)
def _run(self, args) -> ExecResult:
print(("execute: %s" % " ".join(args)))
start = datetime.now()
p = subprocess.run(args, capture_output=True, text=False)
return ExecResult(args=args, exit_code=p.returncode,
stdout=p.stdout, stderr=p.stderr,
duration=datetime.now() - start)
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