mirror of
https://github.com/python-telegram-bot/python-telegram-bot.git
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133 lines
3.6 KiB
Python
133 lines
3.6 KiB
Python
#!/usr/bin/env python
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# pylint: disable=no-name-in-module,unused-import
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#
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# A library that provides a Python interface to the Telegram Bot API
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# Copyright (C) 2015 Leandro Toledo de Souza <leandrotoeldodesouza@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser Public License for more details.
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#
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# You should have received a copy of the GNU Lesser Public License
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# along with this program. If not, see [http://www.gnu.org/licenses/].
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"""This module contains methods to make POST and GET requests"""
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import json
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from ssl import SSLError
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try:
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from urllib.request import urlopen, urlretrieve, Request
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from urllib.error import HTTPError
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except ImportError:
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from urllib import urlretrieve
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from urllib2 import urlopen, Request
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from urllib2 import HTTPError
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from telegram import (InputFile, TelegramError)
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def _parse(json_data):
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"""Try and parse the JSON returned from Telegram and return an empty
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dictionary if there is any error.
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Args:
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url:
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urllib.urlopen object
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Returns:
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A JSON parsed as Python dict with results.
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"""
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data = json.loads(json_data.decode())
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if not data.get('ok') and data.get('description'):
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return data['description']
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return data['result']
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def get(url):
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"""Request an URL.
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Args:
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url:
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The web location we want to retrieve.
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Returns:
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A JSON object.
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"""
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result = urlopen(url).read()
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return _parse(result)
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def post(url,
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data,
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network_delay=2.):
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"""Request an URL.
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Args:
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url:
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The web location we want to retrieve.
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data:
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A dict of (str, unicode) key/value pairs.
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network_delay:
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Additional timeout in seconds to allow the response from Telegram to
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take some time.
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Returns:
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A JSON object.
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"""
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# Add time to the timeout of urlopen to allow data to be transferred over
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# the network.
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if 'timeout' in data:
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timeout = data['timeout'] + network_delay
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else:
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timeout = None
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try:
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if InputFile.is_inputfile(data):
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data = InputFile(data)
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request = Request(url,
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data=data.to_form(),
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headers=data.headers)
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else:
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data = json.dumps(data)
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request = Request(url,
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data=data.encode(),
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headers={'Content-Type': 'application/json'})
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result = urlopen(request, timeout=timeout).read()
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except HTTPError as error:
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if error.getcode() == 403:
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raise TelegramError('Unauthorized')
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if error.getcode() == 502:
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raise TelegramError('Bad Gateway')
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message = _parse(error.read())
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raise TelegramError(message)
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except SSLError as error:
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if "operation timed out" in error.message:
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raise TelegramError("Timed out")
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raise TelegramError(error.message)
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return _parse(result)
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def download(url,
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filename):
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"""Download a file by its URL.
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Args:
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url:
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The web location we want to retrieve.
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filename:
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The filename wihtin the path to download the file.
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"""
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urlretrieve(url, filename)
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