libmproxy/console/__init__.py


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
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
from __future__ import absolute_import

import mailcap
import mimetypes
import tempfile
import os
import os.path
import shlex
import signal
import stat
import subprocess
import sys
import traceback
import urwid
import weakref

from .. import controller, flow, script, contentviews
from . import flowlist, flowview, help, window, signals, options
from . import grideditor, palettes, statusbar, palettepicker

EVENTLOG_SIZE = 500


class ConsoleState(flow.State):
    def __init__(self):
        flow.State.__init__(self)
        self.focus = None
        self.follow_focus = None
        self.default_body_view = contentviews.get("Auto")
        self.flowsettings = weakref.WeakKeyDictionary()
        self.last_search = None

    def __setattr__(self, name, value):
        self.__dict__[name] = value
        signals.update_settings.send(self)

    def add_flow_setting(self, flow, key, value):
        d = self.flowsettings.setdefault(flow, {})
        d[key] = value

    def get_flow_setting(self, flow, key, default=None):
        d = self.flowsettings.get(flow, {})
        return d.get(key, default)

    def add_flow(self, f):
        super(ConsoleState, self).add_flow(f)
        if self.focus is None:
            self.set_focus(0)
        elif self.follow_focus:
            self.set_focus(len(self.view) - 1)
        self.set_flow_marked(f, False)
        return f

    def update_flow(self, f):
        super(ConsoleState, self).update_flow(f)
        if self.focus is None:
            self.set_focus(0)
        return f

    def set_limit(self, limit):
        ret = flow.State.set_limit(self, limit)
        self.set_focus(self.focus)
        return ret

    def get_focus(self):
        if not self.view or self.focus is None:
            return None, None
        return self.view[self.focus], self.focus

    def set_focus(self, idx):
        if self.view:
            if idx >= len(self.view):
                idx = len(self.view) - 1
            elif idx < 0:
                idx = 0
            self.focus = idx
        else:
            self.focus = None

    def set_focus_flow(self, f):
        self.set_focus(self.view.index(f))

    def get_from_pos(self, pos):
        if len(self.view) <= pos or pos < 0:
            return None, None
        return self.view[pos], pos

    def get_next(self, pos):
        return self.get_from_pos(pos + 1)

    def get_prev(self, pos):
        return self.get_from_pos(pos - 1)

    def delete_flow(self, f):
        if f in self.view and self.view.index(f) <= self.focus:
            self.focus -= 1
        if self.focus < 0:
            self.focus = None
        ret = flow.State.delete_flow(self, f)
        self.set_focus(self.focus)
        return ret

    def clear(self):
        marked_flows = []
        for f in self.flows:
            if self.flow_marked(f):
                marked_flows.append(f)
                
        super(ConsoleState, self).clear()
        
        for f in marked_flows:
            self.add_flow(f)
            self.set_flow_marked(f, True)
        
        if len(self.flows.views) == 0:
            self.focus = None
        else:
            self.focus = 0
        self.set_focus(self.focus)
        
    def flow_marked(self, flow):
        return self.get_flow_setting(flow, "marked", False)
    
    def set_flow_marked(self, flow, marked):
        self.add_flow_setting(flow, "marked", marked)
        

class Options(object):
    attributes = [
        "app",
        "app_domain",
        "app_ip",
        "anticache",
        "anticomp",
        "client_replay",
        "eventlog",
        "keepserving",
        "kill",
        "intercept",
        "limit",
        "no_server",
        "refresh_server_playback",
        "rfile",
        "scripts",
        "showhost",
        "replacements",
        "rheaders",
        "setheaders",
        "server_replay",
        "stickycookie",
        "stickyauth",
        "stream_large_bodies",
        "verbosity",
        "wfile",
        "nopop",
        "palette",
        "palette_transparent",
        "no_mouse"
    ]

    def __init__(self, **kwargs):
        for k, v in kwargs.items():
            setattr(self, k, v)
        for i in self.attributes:
            if not hasattr(self, i):
                setattr(self, i, None)


class ConsoleMaster(flow.FlowMaster):
    palette = []

    def __init__(self, server, options):
        flow.FlowMaster.__init__(self, server, ConsoleState())
        self.stream_path = None
        self.options = options

        for i in options.replacements:
            self.replacehooks.add(*i)

        for i in options.setheaders:
            self.setheaders.add(*i)

        r = self.set_intercept(options.intercept)
        if r:
            print >> sys.stderr, "Intercept error:", r
            sys.exit(1)

        if options.limit:
            self.set_limit(options.limit)

        r = self.set_stickycookie(options.stickycookie)
        if r:
            print >> sys.stderr, "Sticky cookies error:", r
            sys.exit(1)

        r = self.set_stickyauth(options.stickyauth)
        if r:
            print >> sys.stderr, "Sticky auth error:", r
            sys.exit(1)

        self.set_stream_large_bodies(options.stream_large_bodies)

        self.refresh_server_playback = options.refresh_server_playback
        self.anticache = options.anticache
        self.anticomp = options.anticomp
        self.killextra = options.kill
        self.rheaders = options.rheaders
        self.nopop = options.nopop
        self.showhost = options.showhost
        self.palette = options.palette
        self.palette_transparent = options.palette_transparent

        self.eventlog = options.eventlog
        self.eventlist = urwid.SimpleListWalker([])

        if options.client_replay:
            self.client_playback_path(options.client_replay)

        if options.server_replay:
            self.server_playback_path(options.server_replay)

        if options.scripts:
            for i in options.scripts:
                err = self.load_script(i)
                if err:
                    print >> sys.stderr, "Script load error:", err
                    sys.exit(1)

        if options.outfile:
            err = self.start_stream_to_path(
                options.outfile[0],
                options.outfile[1]
            )
            if err:
                print >> sys.stderr, "Stream file error:", err
                sys.exit(1)

        self.view_stack = []

        if options.app:
            self.start_app(self.options.app_host, self.options.app_port)
        signals.call_in.connect(self.sig_call_in)
        signals.pop_view_state.connect(self.sig_pop_view_state)
        signals.push_view_state.connect(self.sig_push_view_state)
        signals.sig_add_event.connect(self.sig_add_event)

    def __setattr__(self, name, value):
        self.__dict__[name] = value
        signals.update_settings.send(self)

    def sig_add_event(self, sender, e, level):
        needed = dict(error=0, info=1, debug=2).get(level, 1)
        if self.options.verbosity < needed:
            return

        if level == "error":
            e = urwid.Text(("error", str(e)))
        else:
            e = urwid.Text(str(e))
        self.eventlist.append(e)
        if len(self.eventlist) > EVENTLOG_SIZE:
            self.eventlist.pop(0)
        self.eventlist.set_focus(len(self.eventlist) - 1)

    def add_event(self, e, level):
        signals.add_event(e, level)

    def sig_call_in(self, sender, seconds, callback, args=()):
        def cb(*_):
            return callback(*args)
        self.loop.set_alarm_in(seconds, cb)

    def sig_pop_view_state(self, sender):
        if len(self.view_stack) > 1:
            self.view_stack.pop()
            self.loop.widget = self.view_stack[-1]
        else:
            signals.status_prompt_onekey.send(
                self,
                prompt = "Quit",
                keys = (
                    ("yes", "y"),
                    ("no", "n"),
                ),
                callback = self.quit,
            )

    def sig_push_view_state(self, sender, window):
        self.view_stack.append(window)
        self.loop.widget = window
        self.loop.draw_screen()

    def _run_script_method(self, method, s, f):
        status, val = s.run(method, f)
        if val:
            if status:
                signals.add_event("Method %s return: %s" % (method, val), "debug")
            else:
                signals.add_event(
                    "Method %s error: %s" %
                    (method, val[1]), "error")

    def run_script_once(self, command, f):
        if not command:
            return
        signals.add_event("Running script on flow: %s" % command, "debug")

        try:
            s = script.Script(command, script.ScriptContext(self))
        except script.ScriptException as v:
            signals.status_message.send(
                message = "Error loading script."
            )
            signals.add_event("Error loading script:\n%s" % v.args[0], "error")
            return

        if f.request:
            self._run_script_method("request", s, f)
        if f.response:
            self._run_script_method("response", s, f)
        if f.error:
            self._run_script_method("error", s, f)
        s.unload()
        signals.flow_change.send(self, flow = f)

    def set_script(self, command):
        if not command:
            return
        ret = self.load_script(command)
        if ret:
            signals.status_message.send(message=ret)

    def toggle_eventlog(self):
        self.eventlog = not self.eventlog
        signals.pop_view_state.send(self)
        self.view_flowlist()

    def _readflows(self, path):
        """
        Utitility function that reads a list of flows
        or prints an error to the UI if that fails.
        Returns
            - None, if there was an error.
            - a list of flows, otherwise.
        """
        try:
            return flow.read_flows_from_paths(path)
        except flow.FlowReadError as e:
            signals.status_message.send(message=e.strerror)

    def client_playback_path(self, path):
        if not isinstance(path, list):
            path = [path]
        flows = self._readflows(path)
        if flows:
            self.start_client_playback(flows, False)

    def server_playback_path(self, path):
        if not isinstance(path, list):
            path = [path]
        flows = self._readflows(path)
        if flows:
            self.start_server_playback(
                flows,
                self.killextra, self.rheaders,
                False, self.nopop,
                self.options.replay_ignore_params,
                self.options.replay_ignore_content,
                self.options.replay_ignore_payload_params,
                self.options.replay_ignore_host
            )

    def spawn_editor(self, data):
        fd, name = tempfile.mkstemp('', "mproxy")
        os.write(fd, data)
        os.close(fd)
        c = os.environ.get("EDITOR")
        # if no EDITOR is set, assume 'vi'
        if not c:
            c = "vi"
        cmd = shlex.split(c)
        cmd.append(name)
        self.ui.stop()
        try:
            subprocess.call(cmd)
        except:
            signals.status_message.send(
                message = "Can't start editor: %s" % " ".join(c)
            )
        else:
            data = open(name, "rb").read()
        self.ui.start()
        os.unlink(name)
        return data

    def spawn_external_viewer(self, data, contenttype):
        if contenttype:
            contenttype = contenttype.split(";")[0]
            ext = mimetypes.guess_extension(contenttype) or ""
        else:
            ext = ""
        fd, name = tempfile.mkstemp(ext, "mproxy")
        os.write(fd, data)
        os.close(fd)

        # read-only to remind the user that this is a view function
        os.chmod(name, stat.S_IREAD)

        cmd = None
        shell = False

        if contenttype:
            c = mailcap.getcaps()
            cmd, _ = mailcap.findmatch(c, contenttype, filename=name)
            if cmd:
                shell = True
        if not cmd:
            # hm which one should get priority?
            c = os.environ.get("PAGER") or os.environ.get("EDITOR")
            if not c:
                c = "less"
            cmd = shlex.split(c)
            cmd.append(name)
        self.ui.stop()
        try:
            subprocess.call(cmd, shell=shell)
        except:
            signals.status_message.send(
                message="Can't start external viewer: %s" % " ".join(c)
            )
        self.ui.start()
        os.unlink(name)

    def set_palette(self, name):
        self.palette = name
        self.ui.register_palette(
            palettes.palettes[name].palette(self.palette_transparent)
        )
        self.ui.clear()

    def ticker(self, *userdata):
        changed = self.tick(self.masterq, timeout=0)
        if changed:
            self.loop.draw_screen()
            signals.update_settings.send()
        self.loop.set_alarm_in(0.01, self.ticker)

    def run(self):
        self.ui = urwid.raw_display.Screen()
        self.ui.set_terminal_properties(256)
        self.set_palette(self.palette)
        self.loop = urwid.MainLoop(
            urwid.SolidFill("x"),
            screen = self.ui,
            handle_mouse = not self.options.no_mouse,
        )

        self.server.start_slave(
            controller.Slave,
            controller.Channel(self.masterq, self.should_exit)
        )

        if self.options.rfile:
            ret = self.load_flows_path(self.options.rfile)
            if ret and self.state.flow_count():
                signals.add_event(
                    "File truncated or corrupted. "
                    "Loaded as many flows as possible.",
                    "error"
                )
            elif ret and not self.state.flow_count():
                self.shutdown()
                print >> sys.stderr, "Could not load file:", ret
                sys.exit(1)

        self.loop.set_alarm_in(0.01, self.ticker)

        # It's not clear why we need to handle this explicitly - without this,
        # mitmproxy hangs on keyboard interrupt. Remove if we ever figure it
        # out.
        def exit(s, f):
            raise urwid.ExitMainLoop
        signal.signal(signal.SIGINT, exit)

        self.loop.set_alarm_in(
            0.0001,
            lambda *args: self.view_flowlist()
        )

        try:
            self.loop.run()
        except Exception:
            self.loop.stop()
            sys.stdout.flush()
            print >> sys.stderr, traceback.format_exc()
            print >> sys.stderr, "mitmproxy has crashed!"
            print >> sys.stderr, "Please lodge a bug report at:"
            print >> sys.stderr, "\thttps://github.com/mitmproxy/mitmproxy"
            print >> sys.stderr, "Shutting down..."
        sys.stderr.flush()
        self.shutdown()

    def view_help(self, helpctx):
        signals.push_view_state.send(
            self,
            window = window.Window(
                self,
                help.HelpView(helpctx),
                None,
                statusbar.StatusBar(self, help.footer),
                None
            )
        )

    def view_options(self):
        for i in self.view_stack:
            if isinstance(i["body"], options.Options):
                return
        signals.push_view_state.send(
            self,
            window = window.Window(
                self,
                options.Options(self),
                None,
                statusbar.StatusBar(self, options.footer),
                options.help_context,
            )
        )

    def view_palette_picker(self):
        signals.push_view_state.send(
            self,
            window = window.Window(
                self,
                palettepicker.PalettePicker(self),
                None,
                statusbar.StatusBar(self, palettepicker.footer),
                palettepicker.help_context,
            )
        )

    def view_grideditor(self, ge):
        signals.push_view_state.send(
            self,
            window = window.Window(
                self,
                ge,
                None,
                statusbar.StatusBar(self, grideditor.FOOTER),
                ge.make_help()
            )
        )

    def view_flowlist(self):
        if self.ui.started:
            self.ui.clear()
        if self.state.follow_focus:
            self.state.set_focus(self.state.flow_count())

        if self.eventlog:
            body = flowlist.BodyPile(self)
        else:
            body = flowlist.FlowListBox(self)

        signals.push_view_state.send(
            self,
            window = window.Window(
                self,
                body,
                None,
                statusbar.StatusBar(self, flowlist.footer),
                flowlist.help_context
            )
        )

    def view_flow(self, flow, tab_offset=0):
        self.state.set_focus_flow(flow)
        signals.push_view_state.send(
            self,
            window = window.Window(
                self,
                flowview.FlowView(self, self.state, flow, tab_offset),
                flowview.FlowViewHeader(self, flow),
                statusbar.StatusBar(self, flowview.footer),
                flowview.help_context
            )
        )

    def _write_flows(self, path, flows):
        if not path:
            return
        path = os.path.expanduser(path)
        try:
            f = file(path, "wb")
            fw = flow.FlowWriter(f)
            for i in flows:
                fw.add(i)
            f.close()
        except IOError as v:
            signals.status_message.send(message=v.strerror)

    def save_one_flow(self, path, flow):
        return self._write_flows(path, [flow])

    def save_flows(self, path):
        return self._write_flows(path, self.state.view)
    
    def save_marked_flows(self, path):
        marked_flows = []
        for f in self.state.view:
            if self.state.flow_marked(f):
                marked_flows.append(f)
        return self._write_flows(path, marked_flows)

    def load_flows_callback(self, path):
        if not path:
            return
        ret = self.load_flows_path(path)
        return ret or "Flows loaded from %s" % path

    def load_flows_path(self, path):
        reterr = None
        try:
            flow.FlowMaster.load_flows_file(self, path)
        except flow.FlowReadError as v:
            reterr = str(v)
        signals.flowlist_change.send(self)
        return reterr

    def accept_all(self):
        self.state.accept_all(self)

    def set_limit(self, txt):
        v = self.state.set_limit(txt)
        signals.flowlist_change.send(self)
        return v

    def set_intercept(self, txt):
        return self.state.set_intercept(txt)

    def change_default_display_mode(self, t):
        v = contentviews.get_by_shortcut(t)
        self.state.default_body_view = v
        self.refresh_focus()

    def edit_scripts(self, scripts):
        commands = [x[0] for x in scripts]  # remove outer array
        if commands == [s.command for s in self.scripts]:
            return

        self.unload_scripts()
        for command in commands:
            self.load_script(command)
        signals.update_settings.send(self)

    def stop_client_playback_prompt(self, a):
        if a != "n":
            self.stop_client_playback()

    def stop_server_playback_prompt(self, a):
        if a != "n":
            self.stop_server_playback()

    def quit(self, a):
        if a != "n":
            raise urwid.ExitMainLoop

    def shutdown(self):
        self.state.killall(self)
        flow.FlowMaster.shutdown(self)

    def clear_flows(self):
        self.state.clear()
        signals.flowlist_change.send(self)

    def toggle_follow_flows(self):
        # toggle flow follow
        self.state.follow_focus = not self.state.follow_focus
        # jump to most recent flow if follow is now on
        if self.state.follow_focus:
            self.state.set_focus(self.state.flow_count())
            signals.flowlist_change.send(self)

    def delete_flow(self, f):
        self.state.delete_flow(f)
        signals.flowlist_change.send(self)

    def refresh_focus(self):
        if self.state.view:
            signals.flow_change.send(
                self,
                flow = self.state.view[self.state.focus]
            )

    def process_flow(self, f):
        if self.state.intercept and f.match(
                self.state.intercept) and not f.request.is_replay:
            f.intercept(self)
        else:
            f.reply()
        signals.flowlist_change.send(self)
        signals.flow_change.send(self, flow = f)

    def clear_events(self):
        self.eventlist[:] = []

    # Handlers
    def handle_error(self, f):
        f = flow.FlowMaster.handle_error(self, f)
        if f:
            self.process_flow(f)
        return f

    def handle_request(self, f):
        f = flow.FlowMaster.handle_request(self, f)
        if f:
            self.process_flow(f)
        return f

    def handle_response(self, f):
        f = flow.FlowMaster.handle_response(self, f)
        if f:
            self.process_flow(f)
        return f

    def handle_script_change(self, script):
        if super(ConsoleMaster, self).handle_script_change(script):
            signals.status_message.send(message='"{}" reloaded.'.format(script.filename))
        else:
            signals.status_message.send(message='Error reloading "{}".'.format(script.filename))