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chrome_proxy_extension.py
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chrome_proxy_extension.py
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import os
import shutil
import tempfile
class ProxyExtension:
manifest_json = """
{
"version": "1.0.0",
"manifest_version": 2,
"name": "Chrome Proxy",
"permissions": [
"proxy",
"tabs",
"unlimitedStorage",
"storage",
"<all_urls>",
"webRequest",
"webRequestBlocking"
],
"background": {"scripts": ["background.js"]},
"minimum_chrome_version": "76.0.0"
}
"""
background_js = """
var config = {
mode: "fixed_servers",
rules: {
singleProxy: {
scheme: "http",
host: "%s",
port: %d
},
bypassList: ["localhost"]
}
};
chrome.proxy.settings.set({value: config, scope: "regular"}, function() {});
function callbackFn(details) {
return {
authCredentials: {
username: "%s",
password: "%s"
}
};
}
chrome.webRequest.onAuthRequired.addListener(
callbackFn,
{ urls: ["<all_urls>"] },
['blocking']
);
"""
def __init__(self, host, port, user, password):
self._dir = os.path.normpath(tempfile.mkdtemp())
manifest_file = os.path.join(self._dir, "manifest.json")
with open(manifest_file, mode="w") as f:
f.write(self.manifest_json)
background_js = self.background_js % (host, port, user, password)
background_file = os.path.join(self._dir, "background.js")
with open(background_file, mode="w") as f:
f.write(background_js)
@property
def directory(self):
return self._dir
def __del__(self):
shutil.rmtree(self._dir)