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Google oauth handler using an external Python script #345
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87d9755
Google oauth handler using an external Python script
gaganpreet 7a7cc2e
Extract exchange code logic into function
gaganpreet 0e0e3ea
Use tabs
gaganpreet 22844ef
Remove debug output
gaganpreet aadf4b4
handle scenario when code param is missing
gaganpreet bdad0b7
Use encodeURIComponent for param
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| """Script to handle oauth redirects from Google""" | ||
|
|
||
| import json | ||
| import urllib.parse | ||
| import urllib.request | ||
| import urllib.error | ||
| import argparse | ||
| from http.server import BaseHTTPRequestHandler, HTTPServer | ||
| from urllib.parse import urlparse, parse_qs | ||
|
|
||
| client_id = client_secret = listen_port = None | ||
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| def exchange_code_for_token(code): | ||
| # Exchange code for token from https://oauth2.googleapis.com/token | ||
| # using the following POST request: | ||
| token_params = { | ||
| "code": code, | ||
| "client_id": client_id, | ||
| "client_secret": client_secret, | ||
| "redirect_uri": "http://127.0.0.1:{}/".format(listen_port), | ||
| "grant_type": "authorization_code", | ||
| } | ||
| data = urllib.parse.urlencode(token_params).encode("utf-8") | ||
| req = urllib.request.Request("https://oauth2.googleapis.com/token", data) | ||
| response = urllib.request.urlopen(req) | ||
| token_data = json.loads(response.read().decode("utf-8")) | ||
| return token_data | ||
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| class OAuthRedirectHandler(BaseHTTPRequestHandler): | ||
| def do_GET(self): | ||
| query = urlparse(self.path).query | ||
| params = parse_qs(query) | ||
| # handle OAuth redirect here | ||
| if "code" in params: | ||
| code = params["code"][0] | ||
| try: | ||
| token_data = exchange_code_for_token(code) | ||
| except urllib.error.HTTPError as e: | ||
| print(e.read().decode("utf-8")) | ||
| self.wfile.write(b"Handling redirect failed.") | ||
| raise SystemExit(1) | ||
| print(json.dumps(token_data, sort_keys=True)) | ||
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| self.send_response(200) | ||
| self.send_header("Content-type", "text/html") | ||
| self.end_headers() | ||
| self.wfile.write( | ||
| b"OAuth redirect handled successfully. You can close this tab now." | ||
| ) | ||
| raise SystemExit(0) | ||
| self.wfile.write(b"Missing code parameter in redirect.") | ||
| raise SystemExit(1) | ||
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| if __name__ == "__main__": | ||
| parser = argparse.ArgumentParser() | ||
| parser.add_argument("--client_id", required=True) | ||
| parser.add_argument("--client_secret", required=True) | ||
| parser.add_argument("--listen_port", required=True, type=int) | ||
| args = parser.parse_args() | ||
| client_id = args.client_id | ||
| client_secret = args.client_secret | ||
| listen_port = args.listen_port | ||
|
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| server_address = ("", listen_port) | ||
| httpd = HTTPServer(server_address, OAuthRedirectHandler) | ||
| httpd.serve_forever() | ||
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What is the path of this file? Or is it stdout? or stderr? Is there a reason for using write instead of
print()(no newline)?https://docs.python.org/3/library/http.server.html#http.server.BaseHTTPRequestHandler.wfile
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self.wfileis to write the response back to the client, in this case the browser (to guide the user what to do). For example, after a successful redirect, the user will see this in their browser:The print output is for communication with the QML script (using the
executable.exechelper).