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Bebop/plugins/finger/bebop_finger/plugin.py

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2021-06-04 16:09:37 +02:00
import subprocess
from typing import Optional
from bebop.browser.browser import Browser
from bebop.navigation import parse_url
from bebop.page import Page
from bebop.plugins import SchemePlugin
class FingerPlugin(SchemePlugin):
def __init__(self) -> None:
super().__init__("finger")
def open_url(self, browser: Browser, url: str) -> Optional[str]:
parts = parse_url(url, default_scheme="finger")
host = parts["netloc"]
user = parts["path"][1:] # Strip leading '/' from path.
if not host:
browser.set_status_error(f"Could not parse {url}.")
return None
raw_output = self.request(browser, host, user)
if raw_output is None:
return None
try:
output = raw_output.decode(errors="replace")
except ValueError:
browser.set_status_error("Failed to decode finger output.")
return None
browser.load_page(Page.from_text(output))
browser.current_url = url
return url
def request(self, browser: Browser, host: str, user: str):
target = f"{user}@{host}"
browser.set_status(f"Requesting {target}")
command = ["finger", target]
try:
output = subprocess.check_output(command, stderr=subprocess.PIPE)
except FileNotFoundError:
browser.set_status_error("Finger program not found.")
except subprocess.CalledProcessError as exc:
finger_error = exc.stderr.decode(errors="replace").replace("\n", "")
error = f"Finger failed with code {exc.returncode}: {finger_error}"
browser.set_status_error(error)
else:
return output
plugin = FingerPlugin()