aboutsummaryrefslogtreecommitdiffstats
path: root/libmproxy/console/__init__.py
blob: e5a0283c1da28cc0d1a4e1679e3042571867be13 (plain)
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
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
import mailcap, mimetypes, tempfile, os, subprocess, glob, time, shlex, stat
import os.path, sys, weakref
import urwid
from .. import controller, utils, flow
import flowlist, flowview, help, common, grideditor, palettes, contentview, flowdetailview

EVENTLOG_SIZE = 500


class Stop(Exception): pass


class _PathCompleter:
    def __init__(self, _testing=False):
        """
            _testing: disables reloading of the lookup table to make testing possible.
        """
        self.lookup, self.offset = None, None
        self.final = None
        self._testing = _testing

    def reset(self):
        self.lookup = None
        self.offset = -1

    def complete(self, txt):
        """
            Returns the next completion for txt, or None if there is no completion.
        """
        path = os.path.expanduser(txt)
        if not self.lookup:
            if not self._testing:
                # Lookup is a set of (display value, actual value) tuples.
                self.lookup = []
                if os.path.isdir(path):
                    files = glob.glob(os.path.join(path, "*"))
                    prefix = txt
                else:
                    files = glob.glob(path+"*")
                    prefix = os.path.dirname(txt)
                prefix = prefix or "./"
                for f in files:
                    display = os.path.join(prefix, os.path.basename(f))
                    if os.path.isdir(f):
                        display += "/"
                    self.lookup.append((display, f))
            if not self.lookup:
                self.final = path
                return path
            self.lookup.sort()
            self.offset = -1
            self.lookup.append((txt, txt))
        self.offset += 1
        if self.offset >= len(self.lookup):
            self.offset = 0
        ret = self.lookup[self.offset]
        self.final = ret[1]
        return ret[0]

#begin nocover

class PathEdit(urwid.Edit, _PathCompleter):
    def __init__(self, *args, **kwargs):
        urwid.Edit.__init__(self, *args, **kwargs)
        _PathCompleter.__init__(self)

    def keypress(self, size, key):
        if key == "tab":
            comp = self.complete(self.get_edit_text())
            self.set_edit_text(comp)
            self.set_edit_pos(len(comp))
        else:
            self.reset()
        return urwid.Edit.keypress(self, size, key)


class ActionBar(common.WWrap):
    def __init__(self):
        self.message("")
        self.expire = None

    def selectable(self):
        return True

    def path_prompt(self, prompt, text):
        self.expire = None
        self.w = PathEdit(prompt, text)

    def prompt(self, prompt, text = ""):
        self.expire = None
        # A (partial) workaround for this Urwid issue:
        # https://github.com/Nic0/tyrs/issues/115
        # We can remove it once veryone is beyond 1.0.1
        if isinstance(prompt, basestring):
            prompt = unicode(prompt)
        self.w = urwid.Edit(prompt, text or "")

    def message(self, message, expire=None):
        self.expire = expire
        self.w = urwid.Text(message)


class StatusBar(common.WWrap):
    def __init__(self, master, helptext):
        self.master, self.helptext = master, helptext
        self.ab = ActionBar()
        self.ib = common.WWrap(urwid.Text(""))
        self.w = urwid.Pile([self.ib, self.ab])

    def get_status(self):
        r = []

        if self.master.setheaders.count():
            r.append("[")
            r.append(("heading_key", "H"))
            r.append("eaders]")
        if self.master.replacehooks.count():
            r.append("[")
            r.append(("heading_key", "R"))
            r.append("eplacing]")
        if self.master.client_playback:
            r.append("[")
            r.append(("heading_key", "cplayback"))
            r.append(":%s to go]"%self.master.client_playback.count())
        if self.master.server_playback:
            r.append("[")
            r.append(("heading_key", "splayback"))
            if self.master.nopop:
                r.append(":%s in file]"%self.master.server_playback.count())
            else:
                r.append(":%s to go]"%self.master.server_playback.count())
        if self.master.state.intercept_txt:
            r.append("[")
            r.append(("heading_key", "i"))
            r.append(":%s]"%self.master.state.intercept_txt)
        if self.master.state.limit_txt:
            r.append("[")
            r.append(("heading_key", "l"))
            r.append(":%s]"%self.master.state.limit_txt)
        if self.master.stickycookie_txt:
            r.append("[")
            r.append(("heading_key", "t"))
            r.append(":%s]"%self.master.stickycookie_txt)
        if self.master.stickyauth_txt:
            r.append("[")
            r.append(("heading_key", "u"))
            r.append(":%s]"%self.master.stickyauth_txt)
        if self.master.server.config.reverse_proxy:
            r.append("[")
            r.append(("heading_key", "P"))
            r.append(":%s]"%utils.unparse_url(*self.master.server.config.reverse_proxy))
        if self.master.state.default_body_view.name != "Auto":
            r.append("[")
            r.append(("heading_key", "M"))
            r.append(":%s]"%self.master.state.default_body_view.name)

        opts = []
        if self.master.anticache:
            opts.append("anticache")
        if self.master.anticomp:
            opts.append("anticomp")
        if self.master.showhost:
            opts.append("showhost")
        if not self.master.refresh_server_playback:
            opts.append("norefresh")
        if self.master.killextra:
            opts.append("killextra")
        if self.master.server.config.no_upstream_cert:
            opts.append("no-upstream-cert")
        if self.master.state.follow_focus:
            opts.append("following")

        if opts:
            r.append("[%s]"%(":".join(opts)))

        if self.master.scripts:
            r.append("[script:%s]"%self.master.script.path)

        if self.master.debug:
            r.append("[lt:%0.3f]"%self.master.looptime)

        if self.master.stream:
            r.append("[W:%s]"%self.master.stream_path)

        return r

    def redraw(self):
        if self.ab.expire and time.time() > self.ab.expire:
            self.message("")

        fc = self.master.state.flow_count()
        if self.master.state.focus is None:
            offset = 0
        else:
            offset = min(self.master.state.focus + 1, fc)
        t = [
            ('heading', ("[%s/%s]"%(offset, fc)).ljust(9))
        ]

        if self.master.server.bound:
            boundaddr = "[%s:%s]"%(self.master.server.address or "*", self.master.server.port)
        else:
            boundaddr = ""
        t.extend(self.get_status())
        status = urwid.AttrWrap(urwid.Columns([
            urwid.Text(t),
            urwid.Text(
                [
                    self.helptext,
                    boundaddr
                ],
                align="right"
            ),
        ]), "heading")
        self.ib.set_w(status)

    def update(self, text):
        self.helptext = text
        self.redraw()
        self.master.drawscreen()

    def selectable(self):
        return True

    def get_edit_text(self):
        return self.ab.w.get_edit_text()

    def path_prompt(self, prompt, text):
        return self.ab.path_prompt(prompt, text)

    def prompt(self, prompt, text = ""):
        self.ab.prompt(prompt, text)

    def message(self, msg, expire=None):
        if expire:
            expire = time.time() + float(expire)/1000
        self.ab.message(msg, expire)
        self.master.drawscreen()


#end nocover

class ConsoleState(flow.State):
    def __init__(self):
        flow.State.__init__(self)
        self.focus = None
        self.follow_focus = None
        self.default_body_view = contentview.get("Auto")

        self.view_mode = common.VIEW_LIST
        self.view_flow_mode = common.VIEW_FLOW_REQUEST

        self.last_script = ""
        self.last_saveload = ""
        self.flowsettings = weakref.WeakKeyDictionary()

    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_request(self, req):
        f = flow.State.add_request(self, req)
        if self.focus is None:
            self.set_focus(0)
        elif self.follow_focus:
            self.set_focus(len(self.view) - 1)
        return f

    def add_response(self, resp):
        f = flow.State.add_response(self, resp)
        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

    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



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


#begin nocover


class ConsoleMaster(flow.FlowMaster):
    palette = []
    def __init__(self, server, options):
        flow.FlowMaster.__init__(self, server, ConsoleState())
        self.looptime = 0
        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)

        self.flow_list_walker = None
        self.set_palette(options.palette)

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

        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.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.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)

        self.debug = options.debug

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

        if options.wfile:
            err = self.start_stream(options.wfile)
            if err:
                print >> sys.stderr, "Script load error:", err
                sys.exit(1)

        if options.app:
            self.start_app(self.o.app_host, self.o.app_port, self.o.app_external)

    def start_stream(self, path):
        path = os.path.expanduser(path)
        try:
            f = file(path, "wb")
            flow.FlowMaster.start_stream(self, f, None)
        except IOError, v:
            return str(v)
        self.stream_path = path


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

    def run_script_once(self, path, f):
        if not path:
            return
        self.add_event("Running script on flow: %s"%path)
        ret = self.get_script(path)
        if ret[0]:
            self.statusbar.message("Error loading script.")
            self.add_event("Error loading script:\n%s"%ret[0])
            return
        s = ret[1]
        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()
        self.refresh_flow(f)
        self.state.last_script = path

    def set_script(self, path):
        if not path:
            return
        ret = self.load_script(path)
        if ret:
            self.statusbar.message(ret)
        self.state.last_script = path

    def toggle_eventlog(self):
        self.eventlog = not self.eventlog
        self.view_flowlist()

    def _readflow(self, path):
        path = os.path.expanduser(path)
        try:
            f = file(path, "rb")
            flows = list(flow.FlowReader(f).stream())
        except (IOError, flow.FlowReadError), v:
            return True, v.strerror
        return False, flows

    def client_playback_path(self, path):
        err, ret = self._readflow(path)
        if err:
            self.statusbar.message(ret)
        else:
            self.start_client_playback(ret, False)

    def server_playback_path(self, path):
        err, ret = self._readflow(path)
        if err:
            self.statusbar.message(ret)
        else:
            self.start_server_playback(
                ret,
                self.killextra, self.rheaders,
                False, self.nopop
            )

    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:
            self.statusbar.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:
            self.statusbar.message("Can't start external viewer: %s" % " ".join(c))
        self.ui.start()
        os.unlink(name)

    def set_palette(self, name):
        self.palette = palettes.palettes[name]

    def run(self):
        self.ui = urwid.raw_display.Screen()
        self.ui.set_terminal_properties(256)
        self.ui.register_palette(self.palette)
        self.flow_list_walker = flowlist.FlowListWalker(self, self.state)

        self.view = None
        self.statusbar = None
        self.header = None
        self.body = None
        self.help_context = None

        self.prompting = False
        self.onekey = False

        self.view_flowlist()

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

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

        self.ui.run_wrapper(self.loop)
        # If True, quit just pops out to flow list view.
        print >> sys.stderr, "Shutting down..."
        sys.stderr.flush()
        self.shutdown()

    def make_view(self):
        self.view = urwid.Frame(
                        self.body,
                        header = self.header,
                        footer = self.statusbar
                    )
        self.view.set_focus("body")

    def view_help(self):
        h = help.HelpView(self, self.help_context, (self.statusbar, self.body, self.header))
        self.statusbar = StatusBar(self, help.footer)
        self.body = h
        self.header = None
        self.make_view()

    def view_flowdetails(self, flow):
        h = flowdetailview.FlowDetailsView(self, flow, (self.statusbar, self.body, self.header))
        self.statusbar = StatusBar(self, flowdetailview.footer)
        self.body = h
        self.header = None
        self.make_view()

    def view_grideditor(self, ge):
        self.body = ge
        self.header = None
        self.help_context = ge.make_help()
        self.statusbar = StatusBar(self, grideditor.footer)
        self.make_view()

    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:
            self.body = flowlist.BodyPile(self)
        else:
            self.body = flowlist.FlowListBox(self)
        self.statusbar = StatusBar(self, flowlist.footer)
        self.header = None
        self.state.view_mode = common.VIEW_LIST

        self.make_view()
        self.help_context = flowlist.help_context

    def view_flow(self, flow):
        self.body = flowview.FlowView(self, self.state, flow)
        self.header = flowview.FlowViewHeader(self, flow)
        self.statusbar = StatusBar(self, flowview.footer)
        self.state.set_focus_flow(flow)
        self.state.view_mode = common.VIEW_FLOW

        self.make_view()
        self.help_context = flowview.help_context

    def _write_flows(self, path, flows):
        self.state.last_saveload = path
        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, v:
            self.statusbar.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 load_flows_callback(self, path):
        if not path:
            return
        ret = self.load_flows(path)
        return ret or "Flows loaded from %s"%path

    def load_flows(self, path):
        self.state.last_saveload = path
        path = os.path.expanduser(path)
        try:
            f = file(path, "rb")
            fr = flow.FlowReader(f)
        except IOError, v:
            return v.strerror
        reterr = None
        try:
            flow.FlowMaster.load_flows(self, fr)
        except flow.FlowReadError, v:
            reterr = v.strerror
        f.close()
        if self.flow_list_walker:
            self.sync_list_view()
        return reterr

    def path_prompt(self, prompt, text, callback, *args):
        self.statusbar.path_prompt(prompt, text)
        self.view.set_focus("footer")
        self.prompting = (callback, args)

    def prompt(self, prompt, text, callback, *args):
        self.statusbar.prompt(prompt, text)
        self.view.set_focus("footer")
        self.prompting = (callback, args)

    def prompt_edit(self, prompt, text, callback):
        self.statusbar.prompt(prompt + ": ", text)
        self.view.set_focus("footer")
        self.prompting = (callback, [])

    def prompt_onekey(self, prompt, keys, callback, *args):
        """
            Keys are a set of (word, key) tuples. The appropriate key in the
            word is highlighted.
        """
        prompt = [prompt, " ("]
        mkup = []
        for i, e in enumerate(keys):
            mkup.extend(common.highlight_key(e[0], e[1]))
            if i < len(keys)-1:
                mkup.append(",")
        prompt.extend(mkup)
        prompt.append(")? ")
        self.onekey = "".join(i[1] for i in keys)
        self.prompt(prompt, "", callback, *args)

    def prompt_done(self):
        self.prompting = False
        self.onekey = False
        self.view.set_focus("body")
        self.statusbar.message("")

    def prompt_execute(self, txt=None):
        if not txt:
            txt = self.statusbar.get_edit_text()
        p, args = self.prompting
        self.prompt_done()
        msg = p(txt, *args)
        if msg:
            self.statusbar.message(msg, 1000)

    def prompt_cancel(self):
        self.prompt_done()

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

    def set_limit(self, txt):
        v = self.state.set_limit(txt)
        self.sync_list_view()
        return v

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

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

    def set_reverse_proxy(self, txt):
        if not txt:
            self.server.config.reverse_proxy = None
        else:
            s = utils.parse_proxy_spec(txt)
            if not s:
                return "Invalid reverse proxy specification"
            self.server.config.reverse_proxy = s

    def drawscreen(self):
        size = self.ui.get_cols_rows()
        canvas = self.view.render(size, focus=1)
        self.ui.draw_screen(size, canvas)
        return size

    def pop_view(self):
        if self.state.view_mode == common.VIEW_FLOW:
            self.view_flow(self.state.view[self.state.focus])
        else:
            self.view_flowlist()

    def loop(self):
        changed = True
        try:
            while not controller.should_exit:
                startloop = time.time()
                if changed:
                    self.statusbar.redraw()
                    size = self.drawscreen()
                changed = self.tick(self.masterq)
                self.ui.set_input_timeouts(max_wait=0.1)
                keys = self.ui.get_input()
                if keys:
                    changed = True
                for k in keys:
                    if self.prompting:
                        if k == "esc":
                            self.prompt_cancel()
                        elif self.onekey:
                            if k == "enter":
                                self.prompt_cancel()
                            elif k in self.onekey:
                                self.prompt_execute(k)
                        elif k == "enter":
                            self.prompt_execute()
                        else:
                            self.view.keypress(size, k)
                    else:
                        k = self.view.keypress(size, k)
                        if k:
                            self.statusbar.message("")
                            if k == "?":
                                self.view_help()
                            elif k == "c":
                                if not self.client_playback:
                                    self.path_prompt(
                                        "Client replay: ",
                                        self.state.last_saveload,
                                        self.client_playback_path
                                    )
                                else:
                                    self.prompt_onekey(
                                        "Stop current client replay?",
                                        (
                                            ("yes", "y"),
                                            ("no", "n"),
                                        ),
                                        self.stop_client_playback_prompt,
                                    )
                            elif k == "H":
                                self.view_grideditor(
                                    grideditor.SetHeadersEditor(
                                        self,
                                        self.setheaders.get_specs(),
                                        self.setheaders.set
                                    )
                                )
                            elif k == "i":
                                self.prompt(
                                    "Intercept filter: ",
                                    self.state.intercept_txt,
                                    self.set_intercept
                                )
                            elif k == "Q":
                                raise Stop
                            elif k == "q":
                                self.prompt_onekey(
                                    "Quit",
                                    (
                                        ("yes", "y"),
                                        ("no", "n"),
                                    ),
                                    self.quit,
                                )
                            elif k == "M":
                                self.prompt_onekey(
                                    "Global default display mode",
                                    contentview.view_prompts,
                                    self.change_default_display_mode
                                )
                            elif k == "P":
                                if self.server.config.reverse_proxy:
                                    p = utils.unparse_url(*self.server.config.reverse_proxy)
                                else:
                                    p = ""
                                self.prompt(
                                    "Reverse proxy: ",
                                    p,
                                    self.set_reverse_proxy
                                )
                            elif k == "R":
                                self.view_grideditor(
                                    grideditor.ReplaceEditor(
                                        self,
                                        self.replacehooks.get_specs(),
                                        self.replacehooks.set
                                    )
                                )
                            elif k == "s":
                                if self.scripts:
                                    self.load_script(None)
                                else:
                                    self.path_prompt(
                                        "Set script: ",
                                        self.state.last_script,
                                        self.set_script
                                    )
                            elif k == "S":
                                if not self.server_playback:
                                    self.path_prompt(
                                        "Server replay path: ",
                                        self.state.last_saveload,
                                        self.server_playback_path
                                    )
                                else:
                                    self.prompt_onekey(
                                        "Stop current server replay?",
                                        (
                                            ("yes", "y"),
                                            ("no", "n"),
                                        ),
                                        self.stop_server_playback_prompt,
                                    )
                            elif k == "o":
                                self.prompt_onekey(
                                        "Options",
                                        (
                                            ("anticache", "a"),
                                            ("anticomp", "c"),
                                            ("showhost", "h"),
                                            ("killextra", "k"),
                                            ("norefresh", "n"),
                                            ("no-upstream-certs", "u"),
                                        ),
                                        self._change_options
                                )
                            elif k == "t":
                                self.prompt(
                                    "Sticky cookie filter: ",
                                    self.stickycookie_txt,
                                    self.set_stickycookie
                                )
                            elif k == "u":
                                self.prompt(
                                    "Sticky auth filter: ",
                                    self.stickyauth_txt,
                                    self.set_stickyauth
                                )
                self.looptime = time.time() - startloop
        except (Stop, KeyboardInterrupt):
            pass

    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 Stop

    def _change_options(self, a):
        if a == "a":
            self.anticache = not self.anticache
        if a == "c":
            self.anticomp = not self.anticomp
        if a == "h":
            self.showhost = not self.showhost
            self.sync_list_view()
            self.refresh_focus()
        elif a == "k":
            self.killextra = not self.killextra
        elif a == "n":
            self.refresh_server_playback = not self.refresh_server_playback
        elif a == "u":
            self.server.config.no_upstream_cert = not self.server.config.no_upstream_cert

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

    def sync_list_view(self):
        self.flow_list_walker._modified()

    def clear_flows(self):
        self.state.clear()
        self.sync_list_view()

    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())
            self.sync_list_view()

    def delete_flow(self, f):
        self.state.delete_flow(f)
        self.sync_list_view()

    def refresh_focus(self):
        if self.state.view:
            self.refresh_flow(self.state.view[self.state.focus])

    def refresh_flow(self, c):
        if hasattr(self.header, "refresh_flow"):
            self.header.refresh_flow(c)
        if hasattr(self.body, "refresh_flow"):
            self.body.refresh_flow(c)
        if hasattr(self.statusbar, "refresh_flow"):
            self.statusbar.refresh_flow(c)

    def process_flow(self, f, r):
        if self.state.intercept and f.match(self.state.intercept) and not f.request.is_replay():
            f.intercept()
        else:
            r.reply()
        self.sync_list_view()
        self.refresh_flow(f)

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

    def add_event(self, e, level="info"):
        if level == "info":
            e = urwid.Text(str(e))
        elif level == "error":
            e = urwid.Text(("error", str(e)))

        self.eventlist.append(e)
        if len(self.eventlist) > EVENTLOG_SIZE:
            self.eventlist.pop(0)
        self.eventlist.set_focus(len(self.eventlist)-1)

    # Handlers
    def handle_log(self, l):
        self.add_event(l.msg)
        l.reply()

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

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

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