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(in-package :extreload)
(defvar *client* (wsd:make-client "ws://127.0.0.1:55755/devtools/browser/ec1d4b1c-ced0-47ab-a32e-6fdd5b51e1ba"))
(defun main ()
(wsd:start-connection *client*)
(wsd:on :message *client* #'ws-on-message)
(wsd:send *client* (target-get-targets-msg 1))
(sleep 5)
(wsd:close-connection *client*))
(defun target-get-targets-msg (call-id)
(jsown:to-json
`(:obj ("id" . ,call-id)
("method" . "Target.getTargets"))))
(defun target-attach-to-target-msg (call-id target-id)
(jsown:to-json
`(:obj ("id" . ,call-id)
("method" . "Target.attachToTarget")
("params" . (:obj ("targetId" . ,target-id)
("flatten" . t))))))
(defun target-attached-to-target-msg-p (message)
(equal
(json-obj-get message "method")
"Target.attachedToTarget"))
(defun runtime-evaluate-msg (call-id session-id expression)
(jsown:to-json
`(:obj ("id" . ,call-id)
("sessionId" . ,session-id)
("method" . "Runtime.evaluate")
("params" . (:obj ("expression" . ,expression))))))
(defun ws-on-message (message)
(let* ((response (jsown:parse message))
(targets (parse-get-targets-response response)))
(if targets
(reload-extensions
(extension-targets targets)
'("pacpdcpgfbpkdpmhfaljffnfbdanmblh")))
(if (target-attached-to-target-msg-p response)
(reload-extension
(json-obj-get
(json-obj-get response "params")
"sessionId")))))
(defun parse-get-targets-response (response)
(let* ((result (json-obj-get response "result"))
(targetInfos (json-obj-get result "targetInfos")))
targetInfos))
(defun json-obj-get (obj key)
(handler-case
(jsown:val obj key)
(simple-error (e)
(let ((s (format nil "~A" e)))
(if (search "not available" s)
nil)))))
(defun reload-extensions (targets extension-ids)
(labels ((requested-extension-p (target)
(dolist (id extension-ids)
(if (uiop:string-prefix-p
(concatenate 'string "chrome-extension://" id)
(json-obj-get target "url"))
(return-from requested-extension-p t)))
nil))
(dolist (extension (filter #'requested-extension-p targets))
(attach-to-target extension))))
(defun attach-to-target (extension)
(let ((target-id (json-obj-get extension "targetId")))
(wsd:send *client*
(target-attach-to-target-msg 2 target-id))))
(defun reload-extension (session-id)
(wsd:send *client*
(runtime-evaluate-msg 1 session-id "chrome.runtime.reload()")))
(defun extension-targets (targets)
(labels ((extensionp (target)
(string= (json-obj-get target "type")
"background_page")))
(filter #'extensionp targets)))
(defun filter (predicate list-form)
(let ((newl '()))
(dolist (el list-form)
(if (funcall predicate el)
(push el newl)))
newl))
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