/
urllib2.py
1065 lines (879 loc) · 33.4 KB
/
urllib2.py
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#Embedded file name: e:\jenkins\workspace\client_SERENITY\branches\release\SERENITY\carbon\common\stdlib\urllib2.py
import base64
import hashlib
import httplib
import mimetools
import os
import posixpath
import random
import re
import socket
import sys
import time
import urlparse
import bisect
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
from urllib import unwrap, unquote, splittype, splithost, quote, addinfourl, splitport, splittag, splitattr, ftpwrapper, splituser, splitpasswd, splitvalue
from urllib import localhost, url2pathname, getproxies, proxy_bypass
__version__ = sys.version[:3]
_opener = None
def urlopen(url, data = None, timeout = socket._GLOBAL_DEFAULT_TIMEOUT):
global _opener
if _opener is None:
_opener = build_opener()
return _opener.open(url, data, timeout)
def install_opener(opener):
global _opener
_opener = opener
class URLError(IOError):
def __init__(self, reason):
self.args = (reason,)
self.reason = reason
def __str__(self):
return '<urlopen error %s>' % self.reason
class HTTPError(URLError, addinfourl):
__super_init = addinfourl.__init__
def __init__(self, url, code, msg, hdrs, fp):
self.code = code
self.msg = msg
self.hdrs = hdrs
self.fp = fp
self.filename = url
if fp is not None:
self.__super_init(fp, hdrs, url, code)
def __str__(self):
return 'HTTP Error %s: %s' % (self.code, self.msg)
_cut_port_re = re.compile(':\\d+$')
def request_host(request):
url = request.get_full_url()
host = urlparse.urlparse(url)[1]
if host == '':
host = request.get_header('Host', '')
host = _cut_port_re.sub('', host, 1)
return host.lower()
class Request:
def __init__(self, url, data = None, headers = {}, origin_req_host = None, unverifiable = False):
self.__original = unwrap(url)
self.__original, fragment = splittag(self.__original)
self.type = None
self.host = None
self.port = None
self._tunnel_host = None
self.data = data
self.headers = {}
for key, value in headers.items():
self.add_header(key, value)
self.unredirected_hdrs = {}
if origin_req_host is None:
origin_req_host = request_host(self)
self.origin_req_host = origin_req_host
self.unverifiable = unverifiable
def __getattr__(self, attr):
if attr[:12] == '_Request__r_':
name = attr[12:]
if hasattr(Request, 'get_' + name):
getattr(self, 'get_' + name)()
return getattr(self, attr)
raise AttributeError, attr
def get_method(self):
if self.has_data():
return 'POST'
else:
return 'GET'
def add_data(self, data):
self.data = data
def has_data(self):
return self.data is not None
def get_data(self):
return self.data
def get_full_url(self):
return self.__original
def get_type(self):
if self.type is None:
self.type, self.__r_type = splittype(self.__original)
if self.type is None:
raise ValueError, 'unknown url type: %s' % self.__original
return self.type
def get_host(self):
if self.host is None:
self.host, self.__r_host = splithost(self.__r_type)
if self.host:
self.host = unquote(self.host)
return self.host
def get_selector(self):
return self.__r_host
def set_proxy(self, host, type):
if self.type == 'https' and not self._tunnel_host:
self._tunnel_host = self.host
else:
self.type = type
self.__r_host = self.__original
self.host = host
def has_proxy(self):
return self.__r_host == self.__original
def get_origin_req_host(self):
return self.origin_req_host
def is_unverifiable(self):
return self.unverifiable
def add_header(self, key, val):
self.headers[key.capitalize()] = val
def add_unredirected_header(self, key, val):
self.unredirected_hdrs[key.capitalize()] = val
def has_header(self, header_name):
return header_name in self.headers or header_name in self.unredirected_hdrs
def get_header(self, header_name, default = None):
return self.headers.get(header_name, self.unredirected_hdrs.get(header_name, default))
def header_items(self):
hdrs = self.unredirected_hdrs.copy()
hdrs.update(self.headers)
return hdrs.items()
class OpenerDirector:
def __init__(self):
client_version = 'Python-urllib/%s' % __version__
self.addheaders = [('User-agent', client_version)]
self.handlers = []
self.handle_open = {}
self.handle_error = {}
self.process_response = {}
self.process_request = {}
def add_handler(self, handler):
if not hasattr(handler, 'add_parent'):
raise TypeError('expected BaseHandler instance, got %r' % type(handler))
added = False
for meth in dir(handler):
if meth in ('redirect_request', 'do_open', 'proxy_open'):
continue
i = meth.find('_')
protocol = meth[:i]
condition = meth[i + 1:]
if condition.startswith('error'):
j = condition.find('_') + i + 1
kind = meth[j + 1:]
try:
kind = int(kind)
except ValueError:
pass
lookup = self.handle_error.get(protocol, {})
self.handle_error[protocol] = lookup
elif condition == 'open':
kind = protocol
lookup = self.handle_open
elif condition == 'response':
kind = protocol
lookup = self.process_response
elif condition == 'request':
kind = protocol
lookup = self.process_request
else:
continue
handlers = lookup.setdefault(kind, [])
if handlers:
bisect.insort(handlers, handler)
else:
handlers.append(handler)
added = True
if added:
bisect.insort(self.handlers, handler)
handler.add_parent(self)
def close(self):
pass
def _call_chain(self, chain, kind, meth_name, *args):
handlers = chain.get(kind, ())
for handler in handlers:
func = getattr(handler, meth_name)
result = func(*args)
if result is not None:
return result
def open(self, fullurl, data = None, timeout = socket._GLOBAL_DEFAULT_TIMEOUT):
if isinstance(fullurl, basestring):
req = Request(fullurl, data)
else:
req = fullurl
if data is not None:
req.add_data(data)
req.timeout = timeout
protocol = req.get_type()
meth_name = protocol + '_request'
for processor in self.process_request.get(protocol, []):
meth = getattr(processor, meth_name)
req = meth(req)
response = self._open(req, data)
meth_name = protocol + '_response'
for processor in self.process_response.get(protocol, []):
meth = getattr(processor, meth_name)
response = meth(req, response)
return response
def _open(self, req, data = None):
result = self._call_chain(self.handle_open, 'default', 'default_open', req)
if result:
return result
protocol = req.get_type()
result = self._call_chain(self.handle_open, protocol, protocol + '_open', req)
if result:
return result
return self._call_chain(self.handle_open, 'unknown', 'unknown_open', req)
def error(self, proto, *args):
if proto in ('http', 'https'):
dict = self.handle_error['http']
proto = args[2]
meth_name = 'http_error_%s' % proto
http_err = 1
orig_args = args
else:
dict = self.handle_error
meth_name = proto + '_error'
http_err = 0
args = (dict, proto, meth_name) + args
result = self._call_chain(*args)
if result:
return result
if http_err:
args = (dict, 'default', 'http_error_default') + orig_args
return self._call_chain(*args)
def build_opener(*handlers):
import types
def isclass(obj):
return isinstance(obj, (types.ClassType, type))
opener = OpenerDirector()
default_classes = [ProxyHandler,
UnknownHandler,
HTTPHandler,
HTTPDefaultErrorHandler,
HTTPRedirectHandler,
FTPHandler,
FileHandler,
HTTPErrorProcessor]
if hasattr(httplib, 'HTTPS'):
default_classes.append(HTTPSHandler)
skip = set()
for klass in default_classes:
for check in handlers:
if isclass(check):
if issubclass(check, klass):
skip.add(klass)
elif isinstance(check, klass):
skip.add(klass)
for klass in skip:
default_classes.remove(klass)
for klass in default_classes:
opener.add_handler(klass())
for h in handlers:
if isclass(h):
h = h()
opener.add_handler(h)
return opener
class BaseHandler:
handler_order = 500
def add_parent(self, parent):
self.parent = parent
def close(self):
pass
def __lt__(self, other):
if not hasattr(other, 'handler_order'):
return True
return self.handler_order < other.handler_order
class HTTPErrorProcessor(BaseHandler):
handler_order = 1000
def http_response(self, request, response):
code, msg, hdrs = response.code, response.msg, response.info()
if not 200 <= code < 300:
response = self.parent.error('http', request, response, code, msg, hdrs)
return response
https_response = http_response
class HTTPDefaultErrorHandler(BaseHandler):
def http_error_default(self, req, fp, code, msg, hdrs):
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
class HTTPRedirectHandler(BaseHandler):
max_repeats = 4
max_redirections = 10
def redirect_request(self, req, fp, code, msg, headers, newurl):
m = req.get_method()
if code in (301, 302, 303, 307) and m in ('GET', 'HEAD') or code in (301, 302, 303) and m == 'POST':
newurl = newurl.replace(' ', '%20')
newheaders = dict(((k, v) for k, v in req.headers.items() if k.lower() not in ('content-length', 'content-type')))
return Request(newurl, headers=newheaders, origin_req_host=req.get_origin_req_host(), unverifiable=True)
raise HTTPError(req.get_full_url(), code, msg, headers, fp)
def http_error_302(self, req, fp, code, msg, headers):
if 'location' in headers:
newurl = headers.getheaders('location')[0]
elif 'uri' in headers:
newurl = headers.getheaders('uri')[0]
else:
return
urlparts = urlparse.urlparse(newurl)
if not urlparts.path:
urlparts = list(urlparts)
urlparts[2] = '/'
newurl = urlparse.urlunparse(urlparts)
newurl = urlparse.urljoin(req.get_full_url(), newurl)
newurl_lower = newurl.lower()
if not (newurl_lower.startswith('http://') or newurl_lower.startswith('https://') or newurl_lower.startswith('ftp://')):
raise HTTPError(newurl, code, msg + " - Redirection to url '%s' is not allowed" % newurl, headers, fp)
new = self.redirect_request(req, fp, code, msg, headers, newurl)
if new is None:
return
if hasattr(req, 'redirect_dict'):
visited = new.redirect_dict = req.redirect_dict
if visited.get(newurl, 0) >= self.max_repeats or len(visited) >= self.max_redirections:
raise HTTPError(req.get_full_url(), code, self.inf_msg + msg, headers, fp)
else:
visited = new.redirect_dict = req.redirect_dict = {}
visited[newurl] = visited.get(newurl, 0) + 1
fp.read()
fp.close()
return self.parent.open(new, timeout=req.timeout)
http_error_301 = http_error_303 = http_error_307 = http_error_302
inf_msg = 'The HTTP server returned a redirect error that would lead to an infinite loop.\nThe last 30x error message was:\n'
def _parse_proxy(proxy):
scheme, r_scheme = splittype(proxy)
if not r_scheme.startswith('/'):
scheme = None
authority = proxy
else:
if not r_scheme.startswith('//'):
raise ValueError('proxy URL with no authority: %r' % proxy)
end = r_scheme.find('/', 2)
if end == -1:
end = None
authority = r_scheme[2:end]
userinfo, hostport = splituser(authority)
if userinfo is not None:
user, password = splitpasswd(userinfo)
else:
user = password = None
return (scheme,
user,
password,
hostport)
class ProxyHandler(BaseHandler):
handler_order = 100
def __init__(self, proxies = None):
if proxies is None:
proxies = getproxies()
self.proxies = proxies
for type, url in proxies.items():
setattr(self, '%s_open' % type, lambda r, proxy = url, type = type, meth = self.proxy_open: meth(r, proxy, type))
def proxy_open(self, req, proxy, type):
orig_type = req.get_type()
proxy_type, user, password, hostport = _parse_proxy(proxy)
if proxy_type is None:
proxy_type = orig_type
if req.host and proxy_bypass(req.host):
return
if user and password:
user_pass = '%s:%s' % (unquote(user), unquote(password))
creds = base64.b64encode(user_pass).strip()
req.add_header('Proxy-authorization', 'Basic ' + creds)
hostport = unquote(hostport)
req.set_proxy(hostport, proxy_type)
if orig_type == proxy_type or orig_type == 'https':
return
else:
return self.parent.open(req, timeout=req.timeout)
class HTTPPasswordMgr:
def __init__(self):
self.passwd = {}
def add_password(self, realm, uri, user, passwd):
if isinstance(uri, basestring):
uri = [uri]
if realm not in self.passwd:
self.passwd[realm] = {}
for default_port in (True, False):
reduced_uri = tuple([ self.reduce_uri(u, default_port) for u in uri ])
self.passwd[realm][reduced_uri] = (user, passwd)
def find_user_password(self, realm, authuri):
domains = self.passwd.get(realm, {})
for default_port in (True, False):
reduced_authuri = self.reduce_uri(authuri, default_port)
for uris, authinfo in domains.iteritems():
for uri in uris:
if self.is_suburi(uri, reduced_authuri):
return authinfo
return (None, None)
def reduce_uri(self, uri, default_port = True):
parts = urlparse.urlsplit(uri)
if parts[1]:
scheme = parts[0]
authority = parts[1]
path = parts[2] or '/'
else:
scheme = None
authority = uri
path = '/'
host, port = splitport(authority)
if default_port and port is None and scheme is not None:
dport = {'http': 80,
'https': 443}.get(scheme)
if dport is not None:
authority = '%s:%d' % (host, dport)
return (authority, path)
def is_suburi(self, base, test):
if base == test:
return True
if base[0] != test[0]:
return False
common = posixpath.commonprefix((base[1], test[1]))
if len(common) == len(base[1]):
return True
return False
class HTTPPasswordMgrWithDefaultRealm(HTTPPasswordMgr):
def find_user_password(self, realm, authuri):
user, password = HTTPPasswordMgr.find_user_password(self, realm, authuri)
if user is not None:
return (user, password)
return HTTPPasswordMgr.find_user_password(self, None, authuri)
class AbstractBasicAuthHandler:
rx = re.compile('(?:.*,)*[ \t]*([^ \t]+)[ \t]+realm=(["\'])(.*?)\\2', re.I)
def __init__(self, password_mgr = None):
if password_mgr is None:
password_mgr = HTTPPasswordMgr()
self.passwd = password_mgr
self.add_password = self.passwd.add_password
self.retried = 0
def reset_retry_count(self):
self.retried = 0
def http_error_auth_reqed(self, authreq, host, req, headers):
authreq = headers.get(authreq, None)
if self.retried > 5:
raise HTTPError(req.get_full_url(), 401, 'basic auth failed', headers, None)
else:
self.retried += 1
if authreq:
mo = AbstractBasicAuthHandler.rx.search(authreq)
if mo:
scheme, quote, realm = mo.groups()
if scheme.lower() == 'basic':
response = self.retry_http_basic_auth(host, req, realm)
if response and response.code != 401:
self.retried = 0
return response
def retry_http_basic_auth(self, host, req, realm):
user, pw = self.passwd.find_user_password(realm, host)
if pw is not None:
raw = '%s:%s' % (user, pw)
auth = 'Basic %s' % base64.b64encode(raw).strip()
if req.headers.get(self.auth_header, None) == auth:
return
req.add_unredirected_header(self.auth_header, auth)
return self.parent.open(req, timeout=req.timeout)
else:
return
class HTTPBasicAuthHandler(AbstractBasicAuthHandler, BaseHandler):
auth_header = 'Authorization'
def http_error_401(self, req, fp, code, msg, headers):
url = req.get_full_url()
response = self.http_error_auth_reqed('www-authenticate', url, req, headers)
self.reset_retry_count()
return response
class ProxyBasicAuthHandler(AbstractBasicAuthHandler, BaseHandler):
auth_header = 'Proxy-authorization'
def http_error_407(self, req, fp, code, msg, headers):
authority = req.get_host()
response = self.http_error_auth_reqed('proxy-authenticate', authority, req, headers)
self.reset_retry_count()
return response
def randombytes(n):
if os.path.exists('/dev/urandom'):
f = open('/dev/urandom')
s = f.read(n)
f.close()
return s
else:
L = [ chr(random.randrange(0, 256)) for i in range(n) ]
return ''.join(L)
class AbstractDigestAuthHandler:
def __init__(self, passwd = None):
if passwd is None:
passwd = HTTPPasswordMgr()
self.passwd = passwd
self.add_password = self.passwd.add_password
self.retried = 0
self.nonce_count = 0
self.last_nonce = None
self.last_cnonce = None
def reset_retry_count(self):
self.retried = 0
def http_error_auth_reqed(self, auth_header, host, req, headers):
authreq = headers.get(auth_header, None)
if self.retried > 5:
raise HTTPError(req.get_full_url(), 401, 'digest auth failed', headers, None)
else:
self.retried += 1
if authreq:
scheme = authreq.split()[0]
if scheme.lower() == 'digest':
return self.retry_http_digest_auth(req, authreq)
def retry_http_digest_auth(self, req, auth):
token, challenge = auth.split(' ', 1)
chal = parse_keqv_list(parse_http_list(challenge))
auth = self.get_authorization(req, chal)
if auth:
auth_val = 'Digest %s' % auth
if req.headers.get(self.auth_header, None) == auth_val:
return
req.add_unredirected_header(self.auth_header, auth_val)
resp = self.parent.open(req, timeout=req.timeout)
return resp
def get_cnonce(self, nonce):
dig = hashlib.sha1('%s:%s:%s:%s' % (self.nonce_count,
nonce,
time.ctime(),
randombytes(8))).hexdigest()
return dig[:16]
def get_authorization(self, req, chal):
try:
realm = chal['realm']
nonce = chal['nonce']
qop = chal.get('qop')
algorithm = chal.get('algorithm', 'MD5')
opaque = chal.get('opaque', None)
except KeyError:
return
H, KD = self.get_algorithm_impls(algorithm)
if H is None:
return
user, pw = self.passwd.find_user_password(realm, req.get_full_url())
if user is None:
return
if req.has_data():
entdig = self.get_entity_digest(req.get_data(), chal)
else:
entdig = None
split_result = urlparse.urlsplit(req.get_full_url())
if algorithm == 'MD5-sess' or not split_result.query:
uri = split_result.path
else:
uri = '%s?%s' % (split_result.path, split_result.query)
cnonce = None
if algorithm == 'MD5-sess':
if nonce != self.last_nonce:
self.last_cnonce = self.get_cnonce(nonce)
cnonce = self.last_cnonce
A1 = '%s:%s:%s' % (H('%s:%s:%s' % (user, realm, pw)), nonce, cnonce)
else:
A1 = '%s:%s:%s' % (user, realm, pw)
A2 = '%s:%s' % (req.get_method(), uri)
if qop == 'auth':
if nonce == self.last_nonce:
self.nonce_count += 1
else:
self.nonce_count = 1
self.last_nonce = nonce
ncvalue = '%08x' % self.nonce_count
if not cnonce:
cnonce = self.get_cnonce(nonce)
noncebit = '%s:%s:%s:%s:%s' % (nonce,
ncvalue,
cnonce,
qop,
H(A2))
respdig = KD(H(A1), noncebit)
elif qop is None:
respdig = KD(H(A1), '%s:%s' % (nonce, H(A2)))
else:
raise URLError("qop '%s' is not supported." % qop)
base = 'username="%s", realm="%s", nonce="%s", uri="%s", response="%s"' % (user,
realm,
nonce,
uri,
respdig)
if opaque:
base += ', opaque="%s"' % opaque
if entdig:
base += ', digest="%s"' % entdig
base += ', algorithm="%s"' % algorithm
if qop:
base += ', qop=auth, nc=%s, cnonce="%s"' % (ncvalue, cnonce)
return base
def get_algorithm_impls(self, algorithm):
algorithm = algorithm.upper()
if algorithm in ('MD5', 'MD5-SESS'):
H = lambda x: hashlib.md5(x).hexdigest()
elif algorithm == 'SHA':
H = lambda x: hashlib.sha1(x).hexdigest()
else:
raise ValueError, "Unknown digest authentication algorithm '%s'" % algorithm
KD = lambda s, d: H('%s:%s' % (s, d))
return (H, KD)
def get_entity_digest(self, data, chal):
return None
class HTTPDigestAuthHandler(BaseHandler, AbstractDigestAuthHandler):
auth_header = 'Authorization'
handler_order = 490
def http_error_401(self, req, fp, code, msg, headers):
host = urlparse.urlparse(req.get_full_url())[1]
retry = self.http_error_auth_reqed('www-authenticate', host, req, headers)
self.reset_retry_count()
return retry
class ProxyDigestAuthHandler(BaseHandler, AbstractDigestAuthHandler):
auth_header = 'Proxy-Authorization'
handler_order = 490
def http_error_407(self, req, fp, code, msg, headers):
host = req.get_host()
retry = self.http_error_auth_reqed('proxy-authenticate', host, req, headers)
self.reset_retry_count()
return retry
class AbstractHTTPHandler(BaseHandler):
def __init__(self, debuglevel = 0):
self._debuglevel = debuglevel
def set_http_debuglevel(self, level):
self._debuglevel = level
def do_request_(self, request):
host = request.get_host()
if not host:
raise URLError('no host given')
if request.has_data():
data = request.get_data()
if not request.has_header('Content-type'):
request.add_unredirected_header('Content-type', 'application/x-www-form-urlencoded')
if not request.has_header('Content-length'):
request.add_unredirected_header('Content-length', '%d' % len(data))
sel_host = host
if request.has_proxy():
scheme, sel = splittype(request.get_selector())
sel_host, sel_path = splithost(sel)
if not request.has_header('Host'):
request.add_unredirected_header('Host', sel_host)
for name, value in self.parent.addheaders:
name = name.capitalize()
if not request.has_header(name):
request.add_unredirected_header(name, value)
return request
def do_open(self, http_class, req):
host = req.get_host()
if not host:
raise URLError('no host given')
h = http_class(host, timeout=req.timeout)
h.set_debuglevel(self._debuglevel)
headers = dict(req.unredirected_hdrs)
headers.update(dict(((k, v) for k, v in req.headers.items() if k not in headers)))
headers['Connection'] = 'close'
headers = dict(((name.title(), val) for name, val in headers.items()))
if req._tunnel_host:
tunnel_headers = {}
proxy_auth_hdr = 'Proxy-Authorization'
if proxy_auth_hdr in headers:
tunnel_headers[proxy_auth_hdr] = headers[proxy_auth_hdr]
del headers[proxy_auth_hdr]
h.set_tunnel(req._tunnel_host, headers=tunnel_headers)
try:
h.request(req.get_method(), req.get_selector(), req.data, headers)
try:
r = h.getresponse(buffering=True)
except TypeError:
r = h.getresponse()
except socket.error as err:
raise URLError(err)
fp = socket._fileobject(RecvWrapper(r), close=True)
resp = addinfourl(fp, r.msg, req.get_full_url())
resp.code = r.status
resp.msg = r.reason
return resp
class RecvWrapper(object):
def __init__(self, response):
self.response = response
def recv(self, amt):
return self.response.read(amt)
def close(self):
self.response.close()
class HTTPHandler(AbstractHTTPHandler):
def http_open(self, req):
return self.do_open(httplib.HTTPConnection, req)
http_request = AbstractHTTPHandler.do_request_
if hasattr(httplib, 'HTTPS'):
class HTTPSHandler(AbstractHTTPHandler):
def https_open(self, req):
return self.do_open(httplib.HTTPSConnection, req)
https_request = AbstractHTTPHandler.do_request_
class HTTPCookieProcessor(BaseHandler):
def __init__(self, cookiejar = None):
import cookielib
if cookiejar is None:
cookiejar = cookielib.CookieJar()
self.cookiejar = cookiejar
def http_request(self, request):
self.cookiejar.add_cookie_header(request)
return request
def http_response(self, request, response):
self.cookiejar.extract_cookies(response, request)
return response
https_request = http_request
https_response = http_response
class UnknownHandler(BaseHandler):
def unknown_open(self, req):
type = req.get_type()
raise URLError('unknown url type: %s' % type)
def parse_keqv_list(l):
parsed = {}
for elt in l:
k, v = elt.split('=', 1)
if v[0] == '"' and v[-1] == '"':
v = v[1:-1]
parsed[k] = v
return parsed
def parse_http_list(s):
res = []
part = ''
escape = quote = False
for cur in s:
if escape:
part += cur
escape = False
continue
if quote:
if cur == '\\':
escape = True
continue
elif cur == '"':
quote = False
part += cur
continue
if cur == ',':
res.append(part)
part = ''
continue
if cur == '"':
quote = True
part += cur
if part:
res.append(part)
return [ part.strip() for part in res ]
def _safe_gethostbyname(host):
try:
return socket.gethostbyname(host)
except socket.gaierror:
return None
class FileHandler(BaseHandler):
def file_open(self, req):
url = req.get_selector()
if url[:2] == '//' and url[2:3] != '/' and req.host and req.host != 'localhost':
req.type = 'ftp'
return self.parent.open(req)
else:
return self.open_local_file(req)
names = None
def get_names(self):
if FileHandler.names is None:
try:
FileHandler.names = tuple(socket.gethostbyname_ex('localhost')[2] + socket.gethostbyname_ex(socket.gethostname())[2])
except socket.gaierror:
FileHandler.names = (socket.gethostbyname('localhost'),)
return FileHandler.names
def open_local_file(self, req):
import email.utils
import mimetypes
host = req.get_host()
filename = req.get_selector()
localfile = url2pathname(filename)
try:
stats = os.stat(localfile)
size = stats.st_size
modified = email.utils.formatdate(stats.st_mtime, usegmt=True)
mtype = mimetypes.guess_type(filename)[0]
headers = mimetools.Message(StringIO('Content-type: %s\nContent-length: %d\nLast-modified: %s\n' % (mtype or 'text/plain', size, modified)))
if host:
host, port = splitport(host)
if not host or not port and _safe_gethostbyname(host) in self.get_names():
if host:
origurl = 'file://' + host + filename
else:
origurl = 'file://' + filename
return addinfourl(open(localfile, 'rb'), headers, origurl)
except OSError as msg:
raise URLError(msg)
raise URLError('file not on local host')
class FTPHandler(BaseHandler):
def ftp_open(self, req):
import ftplib
import mimetypes
host = req.get_host()
if not host:
raise URLError('ftp error: no host given')
host, port = splitport(host)
if port is None:
port = ftplib.FTP_PORT
else:
port = int(port)
user, host = splituser(host)
if user:
user, passwd = splitpasswd(user)
else:
passwd = None
host = unquote(host)
user = user or ''
passwd = passwd or ''
try:
host = socket.gethostbyname(host)
except socket.error as msg:
raise URLError(msg)
path, attrs = splitattr(req.get_selector())
dirs = path.split('/')
dirs = map(unquote, dirs)
dirs, file = dirs[:-1], dirs[-1]
if dirs and not dirs[0]:
dirs = dirs[1:]
try:
fw = self.connect_ftp(user, passwd, host, port, dirs, req.timeout)
type = file and 'I' or 'D'
for attr in attrs:
attr, value = splitvalue(attr)
if attr.lower() == 'type' and value in ('a', 'A', 'i', 'I', 'd', 'D'):
type = value.upper()