mitmproxy/libpathod/pathoc.py
Aldo Cortesi 09e995ab5c Improvements to pathoc repeat requests
- Pathoc will now keep trying if connections failed
- Add a -w option to specify a wait time between requests
2015-03-14 11:54:47 +11:00

296 lines
9.2 KiB
Python

import sys
import os
import hashlib
import random
import time
import OpenSSL.crypto
from netlib import tcp, http, certutils
import netlib.utils
import language
import utils
class PathocError(Exception):
pass
class SSLInfo:
def __init__(self, certchain, cipher):
self.certchain, self.cipher = certchain, cipher
class Response:
def __init__(
self,
httpversion,
status_code,
msg,
headers,
content,
sslinfo
):
self.httpversion, self.status_code = httpversion, status_code
self.msg = msg
self.headers, self.content = headers, content
self.sslinfo = sslinfo
def __repr__(self):
return "Response(%s - %s)"%(self.status_code, self.msg)
class Pathoc(tcp.TCPClient):
def __init__(
self,
address,
ssl=None,
sni=None,
sslversion=4,
clientcert=None,
ciphers=None):
tcp.TCPClient.__init__(self, address)
self.settings = dict(
staticdir = os.getcwd(),
unconstrained_file_access = True,
)
self.ssl, self.sni = ssl, sni
self.clientcert = clientcert
self.sslversion = utils.SSLVERSIONS[sslversion]
self.ciphers = ciphers
def http_connect(self, connect_to):
self.wfile.write(
'CONNECT %s:%s HTTP/1.1\r\n'%tuple(connect_to) +
'\r\n'
)
self.wfile.flush()
l = self.rfile.readline()
if not l:
raise PathocError("Proxy CONNECT failed")
parsed = http.parse_response_line(l)
if not parsed[1] == 200:
raise PathocError("Proxy CONNECT failed: %s - %s"%(parsed[1], parsed[2]))
http.read_headers(self.rfile)
def connect(self, connect_to=None):
"""
connect_to: A (host, port) tuple, which will be connected to with an
HTTP CONNECT request.
"""
tcp.TCPClient.connect(self)
if connect_to:
self.http_connect(connect_to)
self.sslinfo = None
if self.ssl:
try:
self.convert_to_ssl(
sni=self.sni,
cert=self.clientcert,
method=self.sslversion,
cipher_list = self.ciphers
)
except tcp.NetLibError, v:
raise PathocError(str(v))
self.sslinfo = SSLInfo(
self.connection.get_peer_cert_chain(),
self.get_current_cipher()
)
def request(self, spec):
"""
Return an (httpversion, code, msg, headers, content) tuple.
May raise language.ParseException, netlib.http.HttpError or
language.FileAccessDenied.
"""
r = language.parse_requests(spec)[0]
language.serve(r, self.wfile, self.settings, self.address.host)
self.wfile.flush()
ret = list(http.read_response(self.rfile, r.method.string(), None))
ret.append(self.sslinfo)
return Response(*ret)
def _show_summary(self, fp, httpversion, code, msg, headers, content):
print >> fp, "<< %s %s: %s bytes"%(
code, utils.xrepr(msg), len(content)
)
def _show(self, fp, header, data, hexdump):
if hexdump:
print >> fp, "%s (hex dump):"%header
for line in netlib.utils.hexdump(data):
print >> fp, "\t%s %s %s"%line
else:
print >> fp, "%s (unprintables escaped):"%header
print >> fp, netlib.utils.cleanBin(data)
def print_request(
self,
r,
showreq,
showresp,
explain,
showssl,
hexdump,
ignorecodes,
ignoretimeout,
fp=sys.stdout
):
"""
Performs a series of requests, and prints results to the specified
file descriptor.
spec: A request specification
showreq: Print requests
showresp: Print responses
explain: Print request explanation
showssl: Print info on SSL connection
hexdump: When printing requests or responses, use hex dump output
ignorecodes: Sequence of return codes to ignore
Returns True if we have a non-ignored response.
"""
resp, req = None, None
if showreq:
self.wfile.start_log()
if showresp:
self.rfile.start_log()
try:
req = language.serve(
r,
self.wfile,
self.settings,
self.address.host
)
self.wfile.flush()
resp = http.read_response(self.rfile, r.method.string(), None)
except http.HttpError, v:
print >> fp, "<< HTTP Error:", v.message
except tcp.NetLibTimeout:
if ignoretimeout:
return
print >> fp, "<<", "Timeout"
except tcp.NetLibDisconnect: # pragma: nocover
print >> fp, "<<", "Disconnect"
if req:
if ignorecodes and resp and resp[1] in ignorecodes:
return
if explain:
print >> fp, ">> Spec:", r.spec()
if showreq:
self._show(fp, ">> Request", self.wfile.get_log(), hexdump)
if showresp:
self._show(fp, "<< Response", self.rfile.get_log(), hexdump)
else:
if resp:
self._show_summary(fp, *resp)
if showssl and self.sslinfo:
print >> fp, "Cipher: %s, %s bit, %s"%self.sslinfo.cipher
print >> fp, "SSL certificate chain:\n"
for i in self.sslinfo.certchain:
print >> fp, "\tSubject: ",
for cn in i.get_subject().get_components():
print >> fp, "%s=%s"%cn,
print >> fp
print >> fp, "\tIssuer: ",
for cn in i.get_issuer().get_components():
print >> fp, "%s=%s"%cn,
print >> fp
print >> fp, "\tVersion: %s"%i.get_version()
print >> fp, "\tValidity: %s - %s"%(
i.get_notBefore(), i.get_notAfter()
)
print >> fp, "\tSerial: %s"%i.get_serial_number()
print >> fp, "\tAlgorithm: %s"%i.get_signature_algorithm()
pk = i.get_pubkey()
types = {
OpenSSL.crypto.TYPE_RSA: "RSA",
OpenSSL.crypto.TYPE_DSA: "DSA"
}
t = types.get(pk.type(), "Uknown")
print >> fp, "\tPubkey: %s bit %s"%(pk.bits(), t)
s = certutils.SSLCert(i)
if s.altnames:
print >> fp, "\tSANs:", " ".join(s.altnames)
print >> fp
return True
def main(args):
memo = set([])
trycount = 0
try:
cnt = 0
while 1:
if cnt == args.repeat and args.repeat != 0:
break
if trycount > args.memolimit:
print >> sys.stderr, "Memo limit exceeded..."
return
if args.wait and cnt != 0:
time.sleep(args.wait)
cnt += 1
if args.random:
playlist = [random.choice(args.requests)]
else:
playlist = args.requests
p = Pathoc(
(args.host, args.port),
ssl=args.ssl,
sni=args.sni,
sslversion=args.sslversion,
clientcert=args.clientcert,
ciphers=args.ciphers
)
if args.explain or args.memo:
playlist = [
i.freeze(p.settings, p.address.host) for i in playlist
]
if args.memo:
newlist = []
for spec in playlist:
h = hashlib.sha256(spec.spec()).digest()
if h not in memo:
memo.add(h)
newlist.append(spec)
playlist = newlist
if not playlist:
trycount += 1
continue
trycount = 0
try:
p.connect(args.connect_to)
except tcp.NetLibError, v:
print >> sys.stderr, str(v)
continue
except PathocError, v:
print >> sys.stderr, str(v)
sys.exit(1)
if args.timeout:
p.settimeout(args.timeout)
for spec in playlist:
ret = p.print_request(
spec,
showreq=args.showreq,
showresp=args.showresp,
explain=args.explain,
showssl=args.showssl,
hexdump=args.hexdump,
ignorecodes=args.ignorecodes,
ignoretimeout=args.ignoretimeout
)
sys.stdout.flush()
if ret and args.oneshot:
sys.exit(0)
except KeyboardInterrupt:
pass