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March 18, 2019 18:15
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Get an `access code` without running a webserver or interacting with a browser. Makes interacting with the Web API remotely more convenient.
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| import requests | |
| import json | |
| from urllib.parse import unquote | |
| from selenium import webdriver | |
| from selenium.webdriver.firefox.options import Options | |
| API_KEY = '*******' # Also called the `client_id` | |
| SECRET_KEY = '*******' | |
| REDIRECT_URI = 'http://localhost:8080' # Arbitrary for headless. | |
| BASE_URL = 'https://sim-api.tradestation.com/v2' | |
| USERNAME = "*******" | |
| PASSWORD = "*******" | |
| # | |
| # Security questions and answers... | |
| # | |
| QUESTION_ONE = "*******" | |
| QUESTION_TWO = "*******" | |
| QUESTION_THREE = "*******" | |
| ANSWER_ONE = "*******" | |
| ANSWER_TWO = "*******" | |
| ANSWER_THREE = "*******" | |
| # | |
| # Once we have the auth code, we can exchange it for the refresh token and access token. | |
| # | |
| def get_token_response(access_code): | |
| headers = {'Content-Type': 'application/x-www-form-urlencoded'} | |
| post_data = { | |
| 'grant_type': 'authorization_code', | |
| 'client_id': API_KEY, | |
| 'client_secret': SECRET_KEY, | |
| 'redirect_uri': REDIRECT_URI, | |
| 'code': access_code | |
| } | |
| r = requests.post(f'{BASE_URL}/Security/Authorize', headers=headers, data=post_data) | |
| try: | |
| return r.json() | |
| except: | |
| return sys.exc_info()[0] | |
| # | |
| # Start Selenium... | |
| # | |
| options = Options() | |
| options.headless = True | |
| driver = webdriver.Firefox(options=options) | |
| auth_url = f"{BASE_URL}/authorize?redirect_uri={REDIRECT_URI}&client_id={API_KEY}&response_type=code" | |
| try: | |
| driver.get(auth_url) | |
| elem = driver.find_element_by_name("username") | |
| elem.clear() | |
| elem.send_keys(USERNAME) | |
| elem = driver.find_element_by_name("password") | |
| elem.clear() | |
| elem.send_keys(PASSWORD) | |
| driver.find_element_by_id("btnLogin").click() | |
| elem = driver.find_element_by_name("ucQuestionAndAnswer$txtAnswer") | |
| elem.clear() | |
| if QUESTION_ONE in driver.page_source: | |
| elem.send_keys(ANSWER_ONE) | |
| elif QUESTION_TWO in driver.page_source: | |
| elem.send_keys(ANSWER_TWO) | |
| elif QUESTION_THREE in driver.page_source: | |
| elem.send_keys(ANSWER_THREE) | |
| else: | |
| print("Uh oh...") # Should probabaly raise exception here. | |
| driver.find_element_by_id("ucQuestionAndAnswer_btnLogin").click() | |
| # | |
| # Lol. If you know a better way to do this, please let me know. | |
| # | |
| except Exception as e: | |
| s = unquote(e.msg) # `e.msg` is in UTF-8, using `unquote` just makes it easier to read/find the start of the access_code from the error message. Not necessary, however. | |
| a, b = s.find("code="), s.find("&c=UTF-8") | |
| access_code = (s[a+5:b]) # The `+5` here is just the length of the string you used to `find` the start of the access_code. | |
| token_response = get_token_response(access_code) | |
| refresh_token = token_response['refresh_token'] | |
| access_token = token_response['access_token'] | |
| print("--- Token Response ---") | |
| print(token_response) | |
| print("--- Access Code ---") | |
| print(access_code) | |
| print("--- Access Token ---") | |
| print(access_token) | |
| print("--- Refresh Token ---") | |
| print(refresh_token) | |
| driver.close() |
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