diff options
Diffstat (limited to 'swiftclient/utils.py')
-rw-r--r-- | swiftclient/utils.py | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/swiftclient/utils.py b/swiftclient/utils.py index a038dcc..a74eada 100644 --- a/swiftclient/utils.py +++ b/swiftclient/utils.py @@ -14,6 +14,23 @@ # limitations under the License. """Miscellaneous utility functions for use with Swift.""" +import sys +import os + +_ver = sys.version_info + +#: Python 2.x? +is_py2 = (_ver[0] == 2) + +#: Python 3.x? +is_py3 = (_ver[0] == 3) + +if is_py2: + from urllib import getproxies, proxy_bypass +elif is_py3: + from urllib.request import getproxies, proxy_bypass + + TRUE_VALUES = set(('true', '1', 'yes', 'on', 't', 'y')) @@ -55,3 +72,36 @@ def prt_bytes(bytes, human_flag): bytes = '%12s' % bytes return(bytes) + + +# get_environ_proxies function, borrowed from python Requests +# (www.python-requests.org) +def get_environ_proxies(netloc): + """Return a dict of environment proxies.""" + + get_proxy = lambda k: os.environ.get(k) or os.environ.get(k.upper()) + + # First check whether no_proxy is defined. If it is, check that the URL + # we're getting isn't in the no_proxy list. + no_proxy = get_proxy('no_proxy') + + if no_proxy: + # We need to check whether we match here. We need to see if we match + # the end of the netloc, both with and without the port. + no_proxy = no_proxy.replace(' ', '').split(',') + + for host in no_proxy: + if netloc.endswith(host) or netloc.split(':')[0].endswith(host): + # The URL does match something in no_proxy, so we don't want + # to apply the proxies on this URL. + return {} + + # If the system proxy settings indicate that this URL should be bypassed, + # don't proxy. + if proxy_bypass(netloc): + return {} + + # If we get here, we either didn't have no_proxy set or we're not going + # anywhere that no_proxy applies to, and the system settings don't require + # bypassing the proxy for the current URL. + return getproxies() |