prawAuth.py

import random
import socket
import sys
import webbrowser

import praw


def receive_connection():
    """Wait for and then return a connected socket..

    Opens a TCP connection on port 8080, and waits for a single client.

    """
    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):
    """Send message to client and close the connection."""
    print(message)
    client.send(f"HTTP/1.1 200 OK\r\n\r\n{message}".encode("utf-8"))
    client.close()


def main():
    """Provide the program's entry point when directly executed."""
    commaScopes = input(
        "Now enter a comma separated list of scopes, or all for all tokens: "
    )

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

    reddit = praw.Reddit(
        client_id='BGLk80bE3REJAw',
        client_secret=None,
        redirect_uri="http://localhost:8080",
        user_agent="Reddit CLI by /u/Gaffclant v1.0",
    )
    state = str(random.randint(0, 65000))
    url = reddit.auth.url(scopes, state, implicit=True)
    webbrowser.open(url)
    sys.stdout.flush()

    client = receive_connection()
    data = client.recv(1024).decode("utf-8")
    print(data)
    param_tokens = data.split(" ", 2)[1]
    print(param_tokens)
    param_tokens = param_tokens.split("#", 2)[0]
    print(param_tokens)
    param_tokens=param_tokens.split("&")
    params = {
        key: value for (key, value) in [token.split("=") for token in param_tokens]
    }

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

    refresh_token = reddit.auth.authorize(params["access_token"])
    send_message(client, f"Access Token: {access_token}")
    return 0


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