reddit_refresh_token.py

import random
import socket
import sys
import praw


# in the library's doc they help with the process of acquiring a refresh token
# but first you need to register your program in reddit itself
# they provide this program to generate it. the program prompts
# for clientID, client_secret and the scopes of the api to be used
# then it open a web page to ask for a permission to access your account


def receive_connection():
    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    server.bind(("localhost", 8080))
    server.listen(1)
    client = server.accept()[0]
    server.close()
    return client


def send_message(client, message):
    client.send("HTTP/1.1 200 OK\r\n\r\n{}".format(message).encode("utf-8"))
    client.close()


def main():

    client_id = input(
        "Enter the client ID, it's the line just under Personal use script at the top: "
    )
    client_secret = input("Enter the client secret, it's the line next to secret: ")
    comma_scopes = input(
        "Now enter a comma separated list of scopes, or all for all tokens: "
    )

    if comma_scopes.lower() == "all":
        scopes = ["*"]
    else:
        scopes = comma_scopes.strip().split(",")

    reddit = praw.Reddit(
        client_id=client_id.strip(),
        client_secret=client_secret.strip(),
        redirect_uri="http://localhost:8080",
        user_agent="praw_refresh_token_example",
    )
    state = str(random.randint(0, 65000))
    url = reddit.auth.url(scopes, state, "permanent")
    print("Now open this url in your browser: " + url)
    sys.stdout.flush()

    client = receive_connection()
    data = client.recv(1024).decode("utf-8")
    param_tokens = data.split(" ", 2)[1].split("?", 1)[1].split("&")
    params = {
        key: value for (key, value) in [token.split("=") for token in param_tokens]
    }

    if state != params["state"]:
        send_message(
            client,
            "State mismatch. Expected: {} Received: {}".format(state, params["state"]),
        )
        return 1
    elif "error" in params:
        send_message(client, params["error"])
        return 1

    refresh_token = reddit.auth.authorize(params["code"])
    send_message(client, "Refresh token: {}".format(refresh_token))
    return 0


if __name__ == "__main__":
    sys.exit(main())