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-rw-r--r--extension/background.js48
1 files changed, 30 insertions, 18 deletions
diff --git a/extension/background.js b/extension/background.js
index 2ffc309..f932548 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -228,43 +228,55 @@ router["/tabs/by-id"] = {
router["/tabs/by-id/*/title.txt"] = withTab(tab => tab.title + "\n");
router["/tabs/by-id/*/text.txt"] = fromScript(`document.body.innerText`);
})();
-let nextConsoleFh = 0;
+let nextConsoleFh = 0; let consoleForFh = {};
router["/tabs/by-id/*/console"] = {
async open({path}) {
const tabId = parseInt(pathComponent(path, -2));
const fh = nextConsoleFh++;
const code = `
-(function() {
- console.__logs${fh} = [];
- console.__logBefore${fh} = console.log;
- console.log = (...xs) => {
- console.__logBefore${fh}(...xs);
- console.__logs${fh}.push(xs);
- };
-})()
+// runs in 'content script' context
+var script = document.createElement('script');
+var code = document.createTextNode(\`
+ // runs in real Web page context (this is where we want to hook console.log)
+ (function() {
+ if (!console.__logOld) console.__logOld = console.log;
+ console.log = (...xs) => {
+ console.__logOld(...xs);
+ // TODO: use random event for security instead of this broadcast
+ window.postMessage({fh: ${fh}, xs: xs}, '*');
+ };
+ })()
+\`);
+script.appendChild(code);
+(document.body || document.head).appendChild(script);
+
+window.addEventListener('message', function({data}) {
+ if (data.fh !== ${fh}) return;
+ chrome.runtime.sendMessage(null, data);
+});
`;
+ consoleForFh[fh] = [];
+ chrome.runtime.onMessage.addListener(data => {
+ if (data.fh !== fh) return;
+ consoleForFh[fh].push(data.xs);
+ });
await browser.tabs.executeScript(tabId, {code});
return {fh};
},
async read({path, fh}) {
- const tabId = parseInt(pathComponent(path, -2));
- const code = `console.__logs${fh}.join('\n')`;
- const buf = (await browser.tabs.executeScript(tabId, {code}))[0];
+ const buf = consoleForFh[fh].join('\n');
return { buf };
},
async release({fh}) {
const tabId = parseInt(pathComponent(path, -2));
- const code = `
-(function() {
- console.log = console.__logBefore${fh};
-})()
-`;
- await browser.tabs.executeScript(tabId, {code});
+ // TODO: clean up everything
return {};
}
};
router["/tabs/by-id/*/eval"] = {
async write({path, buf}) {
+ // FIXME: chunk this properly (like if they write a script in
+ // multiple chunks) and only execute when ready?
const tabId = parseInt(pathComponent(path, -2));
await browser.tabs.executeScript(tabId, {code: buf});
return {size: stringToUtf8Array(buf).length};