135 lines
4.8 KiB
Python
135 lines
4.8 KiB
Python
# =============================================================================
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# Copyright (C) 2014 Ryan Holmes
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#
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# This file is part of pyfa.
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#
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# pyfa is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General 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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# pyfa 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with pyfa. If not, see <http://www.gnu.org/licenses/>.
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# =============================================================================
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import urllib2
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import urllib
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import socket
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from logbook import Logger
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import config
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from service.settings import NetworkSettings
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pyfalog = Logger(__name__)
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# network timeout, otherwise pyfa hangs for a long while if no internet connection
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timeout = 3
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socket.setdefaulttimeout(timeout)
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class Error(StandardError):
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def __init__(self, msg=None):
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self.message = msg
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class RequestError(StandardError):
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pass
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class AuthenticationError(StandardError):
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pass
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class ServerError(StandardError):
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pass
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class TimeoutError(StandardError):
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pass
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class Network(object):
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# Request constants - every request must supply this, as it is checked if
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# enabled or not via settings
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ENABLED = 1
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EVE = 2 # Mostly API, but also covers CREST requests
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PRICES = 4
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UPDATE = 8
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_instance = None
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@classmethod
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def getInstance(cls):
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if cls._instance is None:
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cls._instance = Network()
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return cls._instance
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def request(self, url, type, data=None):
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# URL is required to be https as of right now
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# print "Starting request: %s\n\tType: %s\n\tPost Data: %s"%(url,type,data)
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# Make sure request is enabled
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access = NetworkSettings.getInstance().getAccess()
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if not self.ENABLED & access or not type & access:
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pyfalog.warning("Access not enabled - please enable in Preferences > Network")
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raise Error("Access not enabled - please enable in Preferences > Network")
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# Set up some things for the request
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versionString = "{0} {1} - {2} {3}".format(config.version, config.tag, config.expansionName,
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config.expansionVersion)
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headers = {"User-Agent": "pyfa {0} (Python-urllib2)".format(versionString)}
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proxy = NetworkSettings.getInstance().getProxySettings()
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if proxy is not None:
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# proxy is a tuple of (host, port): (u'192.168.20.1', 3128)
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proxy_auth = NetworkSettings.getInstance().getProxyAuthDetails()
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# proxy_auth is a tuple of (login, password) or None
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if proxy_auth is not None:
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# add login:password@ in front of proxy address
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proxy_handler = urllib2.ProxyHandler({
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'https': '{0}:{1}@{2}:{3}'.format(
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proxy_auth[0], proxy_auth[1], proxy[0], proxy[1])
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})
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else:
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# build proxy handler with no login/pass info
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proxy_handler = urllib2.ProxyHandler({'https': "{0}:{1}".format(proxy[0], proxy[1])})
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opener = urllib2.build_opener(proxy_handler)
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urllib2.install_opener(opener)
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else:
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# This is a bug fix, explicitly disable possibly previously installed
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# opener with proxy, by urllib2.install_opener() a few lines above in code.
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# Now this explicitly disables proxy handler, "uninstalling" opener.
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# This is used in case when user had proxy enabled, so proxy_handler was already
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# installed globally, and then user had disabled the proxy, so we should clear that opener
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urllib2.install_opener(None)
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# another option could be installing a default opener:
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# urllib2.install_opener(urllib2.build_opener())
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request = urllib2.Request(url, headers=headers, data=urllib.urlencode(data) if data else None)
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try:
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return urllib2.urlopen(request)
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except urllib2.HTTPError as error:
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pyfalog.warning("HTTPError:")
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pyfalog.warning(error)
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if error.code == 404:
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raise RequestError()
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elif error.code == 403:
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raise AuthenticationError()
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elif error.code >= 500:
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raise ServerError()
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except urllib2.URLError as error:
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pyfalog.warning("Timed out or other URL error:")
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pyfalog.warning(error)
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if "timed out" in error.reason:
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raise TimeoutError()
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else:
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raise Error(error)
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