blob: d08b3237e6e71dcb3bf2fdad41642d89e3aeb53d (
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
|
;;; Copyright (c) 2021 Teddy Wing
;;;
;;; This file is part of Extreload.
;;;
;;; Extreload is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; Extreload is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Extreload. If not, see <https://www.gnu.org/licenses/>.
(in-package :extreload)
(defvar *wg* (wait-group:make-wait-group))
(defvar *devtools-root-call-id* (make-instance 'call-id)
"DevTools Protocol call ID.")
(defvar *devtools-secondary-call-id* (make-instance 'call-id)
"DevTools Protocol call ID used for messages to individual target sessions.")
(defconstant +timeout-seconds+ 5
"Global timeout. The program will exit at the end of this delay.")
(defun main ()
(handler-case
(interrupt:with-user-abort
(handler-bind ((error #'(lambda (e)
(exit-with-error e sysexits:+unavailable+))))
;; Store the config as a global.
(defvar *config* (parse-options))
(trivial-timeout:with-timeout (+timeout-seconds+)
(with-websocket-connection ((ws-client *config*))
(wsd:on :message (ws-client *config*)
#'(lambda (message)
(ws-on-message
message
(extension-ids *config*)
*config*)))
(websocket-send
(ws-client *config*)
(target-get-targets-msg
(next-call-id *devtools-root-call-id*)))
(wait-group:wait *wg*)))))
;; Control-c
(interrupt:user-abort ()
(opts:exit sysexits:+ok+))))
(defun ws-on-message (message extension-ids config)
"Called when a WebSocket message is received."
(let* ((response (jsown:parse message))
(targets (parse-get-targets-response response)))
(when (debug-output config)
(format t "Response: ~a~%" response)
(format t "~a~%" *wg*))
(when targets
(let ((targets (extension-targets targets)))
(attach-extensions targets extension-ids)))
(if (target-attached-to-target-msg-p response)
(reload-extension (json-obj-get
(json-obj-get response "params")
"sessionId")))
(when (and (reload-current-tab config)
(runtime-evaluate-msg-p response))
(reload-tab (json-obj-get
(json-obj-get response "result")
"sessionId")))
;; Failed to reload tab.
(when (runtime-evaluate-exception-p response)
;; `reload-tab` adds an extra increment to the wait group. If the call
;; fails, we only receive one message instead of two, so the wait group
;; must be decremented to match.
(wait-group:done *wg*)
(reload-tab (json-obj-get response "sessionId")))
(wait-group:done *wg*)))
(defun json-obj-get (obj key)
"Get the value of `key` from `obj` (a `jsown` object). Return nil if `key` is
not defined."
(handler-case
(jsown:val obj key)
(simple-error (e)
(let ((s (format nil "~A" e)))
(if (search "not available" s)
nil)))))
(defun attach-extensions (targets extension-ids)
"Attach to all extensions in `targets` that match the IDs in
`extension-ids`."
(labels ((requested-extension-p (target)
(find-if
#'(lambda (id)
(uiop:string-prefix-p
(concatenate 'string "chrome-extension://" id)
(json-obj-get target "url")))
extension-ids)))
(dolist (extension (filter #'requested-extension-p targets))
(attach-to-target extension))))
(defun attach-to-target (extension)
"Send a message to the target in `extension` asking to attach to the target."
(let ((target-id (json-obj-get extension "targetId")))
(websocket-send (ws-client *config*)
(target-attach-to-target-msg
(next-call-id *devtools-root-call-id*)
target-id))))
(defun reload-extension (session-id)
"Send a message to an extension page corresponding to `session-id`, telling
the target extension to reload itself."
(websocket-send
(ws-client *config*)
(runtime-evaluate-msg
(next-call-id *devtools-secondary-call-id*)
session-id
"chrome.runtime.reload()")))
(defun reload-tab (session-id)
"Send a message to an extension page corresponding to `session-id`, telling
the target to reload the current tab."
;; Two response messages always come back from the `chrome.tabs.reload()`
;; messages, so we need to add a second increment to the wait group.
(wait-group:add *wg*)
(websocket-send
(ws-client *config*)
(runtime-evaluate-msg
(next-call-id *devtools-secondary-call-id*)
session-id
"chrome.tabs.reload()")))
(defun extension-targets (targets)
"Filter `targets`, returning a list of targets corresponding to extensions."
(labels ((extensionp (target)
(string= (json-obj-get target "type")
"background_page")))
(filter #'extensionp targets)))
(defun websocket-send (client data)
"Send `data` to WebSocket `client` and increment `*wg*`."
(when (debug-output *config*)
(format t "Sending: ~a~%" data))
(wsd:send client data)
(wait-group:add *wg*))
|
