| from __future__ import generators | |
| """ | |
| httplib2 | |
| A caching http interface that supports ETags and gzip | |
| to conserve bandwidth. | |
| Requires Python 2.3 or later | |
| Changelog: | |
| 2007-08-18, Rick: Modified so it's able to use a socks proxy if needed. | |
| """ | |
| __author__ = "Joe Gregorio ([email protected])" | |
| __copyright__ = "Copyright 2006, Joe Gregorio" | |
| __contributors__ = ["Thomas Broyer ([email protected])", | |
| "James Antill", | |
| "Xavier Verges Farrero", | |
| "Jonathan Feinberg", | |
| "Blair Zajac", | |
| "Sam Ruby", | |
| "Louis Nyffenegger"] | |
| __license__ = "MIT" | |
| __version__ = "$Rev$" | |
| import re | |
| import sys | |
| import email | |
| import email.Utils | |
| import email.Message | |
| import email.FeedParser | |
| import StringIO | |
| import gzip | |
| import zlib | |
| import httplib | |
| import urlparse | |
| import base64 | |
| import os | |
| import copy | |
| import calendar | |
| import time | |
| import random | |
| import errno | |
| # remove depracated warning in python2.6 | |
| try: | |
| from hashlib import sha1 as _sha, md5 as _md5 | |
| except ImportError: | |
| import sha | |
| import md5 | |
| _sha = sha.new | |
| _md5 = md5.new | |
| import hmac | |
| from gettext import gettext as _ | |
| import socket | |
| try: | |
| from httplib2 import socks | |
| except ImportError: | |
| socks = None | |
| # Build the appropriate socket wrapper for ssl | |
| try: | |
| import ssl # python 2.6 | |
| _ssl_wrap_socket = ssl.wrap_socket | |
| except ImportError: | |
| def _ssl_wrap_socket(sock, key_file, cert_file): | |
| ssl_sock = socket.ssl(sock, key_file, cert_file) | |
| return httplib.FakeSocket(sock, ssl_sock) | |
| if sys.version_info >= (2,3): | |
| from iri2uri import iri2uri | |
| else: | |
| def iri2uri(uri): | |
| return uri | |
| def has_timeout(timeout): # python 2.6 | |
| if hasattr(socket, '_GLOBAL_DEFAULT_TIMEOUT'): | |
| return (timeout is not None and timeout is not socket._GLOBAL_DEFAULT_TIMEOUT) | |
| return (timeout is not None) | |
| __all__ = ['Http', 'Response', 'ProxyInfo', 'HttpLib2Error', | |
| 'RedirectMissingLocation', 'RedirectLimit', 'FailedToDecompressContent', | |
| 'UnimplementedDigestAuthOptionError', 'UnimplementedHmacDigestAuthOptionError', | |
| 'debuglevel', 'ProxiesUnavailableError'] | |
| # The httplib debug level, set to a non-zero value to get debug output | |
| debuglevel = 0 | |
| # Python 2.3 support | |
| if sys.version_info < (2,4): | |
| def sorted(seq): | |
| seq.sort() | |
| return seq | |
| # Python 2.3 support | |
| def HTTPResponse__getheaders(self): | |
| """Return list of (header, value) tuples.""" | |
| if self.msg is None: | |
| raise httplib.ResponseNotReady() | |
| return self.msg.items() | |
| if not hasattr(httplib.HTTPResponse, 'getheaders'): | |
| httplib.HTTPResponse.getheaders = HTTPResponse__getheaders | |
| # All exceptions raised here derive from HttpLib2Error | |
| class HttpLib2Error(Exception): pass | |
| # Some exceptions can be caught and optionally | |
| # be turned back into responses. | |
| class HttpLib2ErrorWithResponse(HttpLib2Error): | |
| def __init__(self, desc, response, content): | |
| self.response = response | |
| self.content = content | |
| HttpLib2Error.__init__(self, desc) | |
| class RedirectMissingLocation(HttpLib2ErrorWithResponse): pass | |
| class RedirectLimit(HttpLib2ErrorWithResponse): pass | |
| class FailedToDecompressContent(HttpLib2ErrorWithResponse): pass | |
| class UnimplementedDigestAuthOptionError(HttpLib2ErrorWithResponse): pass | |
| class UnimplementedHmacDigestAuthOptionError(HttpLib2ErrorWithResponse): pass | |
| class RelativeURIError(HttpLib2Error): pass | |
| class ServerNotFoundError(HttpLib2Error): pass | |
| class ProxiesUnavailableError(HttpLib2Error): pass | |
| # Open Items: | |
| # ----------- | |
| # Proxy support | |
| # Are we removing the cached content too soon on PUT (only delete on 200 Maybe?) | |
| # Pluggable cache storage (supports storing the cache in | |
| # flat files by default. We need a plug-in architecture | |
| # that can support Berkeley DB and Squid) | |
| # == Known Issues == | |
| # Does not handle a resource that uses conneg and Last-Modified but no ETag as a cache validator. | |
| # Does not handle Cache-Control: max-stale | |
| # Does not use Age: headers when calculating cache freshness. | |
| # The number of redirections to follow before giving up. | |
| # Note that only GET redirects are automatically followed. | |
| # Will also honor 301 requests by saving that info and never | |
| # requesting that URI again. | |
| DEFAULT_MAX_REDIRECTS = 5 | |
| # Which headers are hop-by-hop headers by default | |
| HOP_BY_HOP = ['connection', 'keep-alive', 'proxy-authenticate', 'proxy-authorization', 'te', 'trailers', 'transfer-encoding', 'upgrade'] | |
| def _get_end2end_headers(response): | |
| hopbyhop = list(HOP_BY_HOP) | |
| hopbyhop.extend([x.strip() for x in response.get('connection', '').split(',')]) | |
| return [header for header in response.keys() if header not in hopbyhop] | |
| URI = re.compile(r"^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?") | |
| def parse_uri(uri): | |
| """Parses a URI using the regex given in Appendix B of RFC 3986. | |
| (scheme, authority, path, query, fragment) = parse_uri(uri) | |
| """ | |
| groups = URI.match(uri).groups() | |
| return (groups[1], groups[3], groups[4], groups[6], groups[8]) | |
| def urlnorm(uri): | |
| (scheme, authority, path, query, fragment) = parse_uri(uri) | |
| if not scheme or not authority: | |
| raise RelativeURIError("Only absolute URIs are allowed. uri = %s" % uri) | |
| authority = authority.lower() | |
| scheme = scheme.lower() | |
| if not path: | |
| path = "/" | |
| # Could do syntax based normalization of the URI before | |
| # computing the digest. See Section 6.2.2 of Std 66. | |
| request_uri = query and "?".join([path, query]) or path | |
| scheme = scheme.lower() | |
| defrag_uri = scheme + "://" + authority + request_uri | |
| return scheme, authority, request_uri, defrag_uri | |
| # Cache filename construction (original borrowed from Venus http://intertwingly.net/code/venus/) | |
| re_url_scheme = re.compile(r'^\w+://') | |
| re_slash = re.compile(r'[?/:|]+') | |
| def safename(filename): | |
| """Return a filename suitable for the cache. | |
| Strips dangerous and common characters to create a filename we | |
| can use to store the cache in. | |
| """ | |
| try: | |
| if re_url_scheme.match(filename): | |
| if isinstance(filename,str): | |
| filename = filename.decode('utf-8') | |
| filename = filename.encode('idna') | |
| else: | |
| filename = filename.encode('idna') | |
| except UnicodeError: | |
| pass | |
| if isinstance(filename,unicode): | |
| filename=filename.encode('utf-8') | |
| filemd5 = _md5(filename).hexdigest() | |
| filename = re_url_scheme.sub("", filename) | |
| filename = re_slash.sub(",", filename) | |
| # limit length of filename | |
| if len(filename)>200: | |
| filename=filename[:200] | |
| return ",".join((filename, filemd5)) | |
| NORMALIZE_SPACE = re.compile(r'(?:\r\n)?[ \t]+') | |
| def _normalize_headers(headers): | |
| return dict([ (key.lower(), NORMALIZE_SPACE.sub(value, ' ').strip()) for (key, value) in headers.iteritems()]) | |
| def _parse_cache_control(headers): | |
| retval = {} | |
| if headers.has_key('cache-control'): | |
| parts = headers['cache-control'].split(',') | |
| parts_with_args = [tuple([x.strip().lower() for x in part.split("=", 1)]) for part in parts if -1 != part.find("=")] | |
| parts_wo_args = [(name.strip().lower(), 1) for name in parts if -1 == name.find("=")] | |
| retval = dict(parts_with_args + parts_wo_args) | |
| return retval | |
| # Whether to use a strict mode to parse WWW-Authenticate headers | |
| # Might lead to bad results in case of ill-formed header value, | |
| # so disabled by default, falling back to relaxed parsing. | |
| # Set to true to turn on, usefull for testing servers. | |
| USE_WWW_AUTH_STRICT_PARSING = 0 | |
| # In regex below: | |
| # [^\0-\x1f\x7f-\xff()<>@,;:\\\"/[\]?={} \t]+ matches a "token" as defined by HTTP | |
| # "(?:[^\0-\x08\x0A-\x1f\x7f-\xff\\\"]|\\[\0-\x7f])*?" matches a "quoted-string" as defined by HTTP, when LWS have already been replaced by a single space | |
| # Actually, as an auth-param value can be either a token or a quoted-string, they are combined in a single pattern which matches both: | |
| # \"?((?<=\")(?:[^\0-\x1f\x7f-\xff\\\"]|\\[\0-\x7f])*?(?=\")|(?<!\")[^\0-\x08\x0A-\x1f\x7f-\xff()<>@,;:\\\"/[\]?={} \t]+(?!\"))\"? | |
| WWW_AUTH_STRICT = re.compile(r"^(?:\s*(?:,\s*)?([^\0-\x1f\x7f-\xff()<>@,;:\\\"/[\]?={} \t]+)\s*=\s*\"?((?<=\")(?:[^\0-\x08\x0A-\x1f\x7f-\xff\\\"]|\\[\0-\x7f])*?(?=\")|(?<!\")[^\0-\x1f\x7f-\xff()<>@,;:\\\"/[\]?={} \t]+(?!\"))\"?)(.*)$") | |
| WWW_AUTH_RELAXED = re.compile(r"^(?:\s*(?:,\s*)?([^ \t\r\n=]+)\s*=\s*\"?((?<=\")(?:[^\\\"]|\\.)*?(?=\")|(?<!\")[^ \t\r\n,]+(?!\"))\"?)(.*)$") | |
| UNQUOTE_PAIRS = re.compile(r'\\(.)') | |
| def _parse_www_authenticate(headers, headername='www-authenticate'): | |
| """Returns a dictionary of dictionaries, one dict | |
| per auth_scheme.""" | |
| retval = {} | |
| if headers.has_key(headername): | |
| authenticate = headers[headername].strip() | |
| www_auth = USE_WWW_AUTH_STRICT_PARSING and WWW_AUTH_STRICT or WWW_AUTH_RELAXED | |
| while authenticate: | |
| # Break off the scheme at the beginning of the line | |
| if headername == 'authentication-info': | |
| (auth_scheme, the_rest) = ('digest', authenticate) | |
| else: | |
| (auth_scheme, the_rest) = authenticate.split(" ", 1) | |
| # Now loop over all the key value pairs that come after the scheme, | |
| # being careful not to roll into the next scheme | |
| match = www_auth.search(the_rest) | |
| auth_params = {} | |
| while match: | |
| if match and len(match.groups()) == 3: | |
| (key, value, the_rest) = match.groups() | |
| auth_params[key.lower()] = UNQUOTE_PAIRS.sub(r'\1', value) # '\\'.join([x.replace('\\', '') for x in value.split('\\\\')]) | |
| match = www_auth.search(the_rest) | |
| retval[auth_scheme.lower()] = auth_params | |
| authenticate = the_rest.strip() | |
| return retval | |
| def _entry_disposition(response_headers, request_headers): | |
| """Determine freshness from the Date, Expires and Cache-Control headers. | |
| We don't handle the following: | |
| 1. Cache-Control: max-stale | |
| 2. Age: headers are not used in the calculations. | |
| Not that this algorithm is simpler than you might think | |
| because we are operating as a private (non-shared) cache. | |
| This lets us ignore 's-maxage'. We can also ignore | |
| 'proxy-invalidate' since we aren't a proxy. | |
| We will never return a stale document as | |
| fresh as a design decision, and thus the non-implementation | |
| of 'max-stale'. This also lets us safely ignore 'must-revalidate' | |
| since we operate as if every server has sent 'must-revalidate'. | |
| Since we are private we get to ignore both 'public' and | |
| 'private' parameters. We also ignore 'no-transform' since | |
| we don't do any transformations. | |
| The 'no-store' parameter is handled at a higher level. | |
| So the only Cache-Control parameters we look at are: | |
| no-cache | |
| only-if-cached | |
| max-age | |
| min-fresh | |
| """ | |
| retval = "STALE" | |
| cc = _parse_cache_control(request_headers) | |
| cc_response = _parse_cache_control(response_headers) | |
| if request_headers.has_key('pragma') and request_headers['pragma'].lower().find('no-cache') != -1: | |
| retval = "TRANSPARENT" | |
| if 'cache-control' not in request_headers: | |
| request_headers['cache-control'] = 'no-cache' | |
| elif cc.has_key('no-cache'): | |
| retval = "TRANSPARENT" | |
| elif cc_response.has_key('no-cache'): | |
| retval = "STALE" | |
| elif cc.has_key('only-if-cached'): | |
| retval = "FRESH" | |
| elif response_headers.has_key('date'): | |
| date = calendar.timegm(email.Utils.parsedate_tz(response_headers['date'])) | |
| now = time.time() | |
| current_age = max(0, now - date) | |
| if cc_response.has_key('max-age'): | |
| try: | |
| freshness_lifetime = int(cc_response['max-age']) | |
| except ValueError: | |
| freshness_lifetime = 0 | |
| elif response_headers.has_key('expires'): | |
| expires = email.Utils.parsedate_tz(response_headers['expires']) | |
| if None == expires: | |
| freshness_lifetime = 0 | |
| else: | |
| freshness_lifetime = max(0, calendar.timegm(expires) - date) | |
| else: | |
| freshness_lifetime = 0 | |
| if cc.has_key('max-age'): | |
| try: | |
| freshness_lifetime = int(cc['max-age']) | |
| except ValueError: | |
| freshness_lifetime = 0 | |
| if cc.has_key('min-fresh'): | |
| try: | |
| min_fresh = int(cc['min-fresh']) | |
| except ValueError: | |
| min_fresh = 0 | |
| current_age += min_fresh | |
| if freshness_lifetime > current_age: | |
| retval = "FRESH" | |
| return retval | |
| def _decompressContent(response, new_content): | |
| content = new_content | |
| try: | |
| encoding = response.get('content-encoding', None) | |
| if encoding in ['gzip', 'deflate']: | |
| if encoding == 'gzip': | |
| content = gzip.GzipFile(fileobj=StringIO.StringIO(new_content)).read() | |
| if encoding == 'deflate': | |
| content = zlib.decompress(content) | |
| response['content-length'] = str(len(content)) | |
| # Record the historical presence of the encoding in a way the won't interfere. | |
| response['-content-encoding'] = response['content-encoding'] | |
| del response['content-encoding'] | |
| except IOError: | |
| content = "" | |
| raise FailedToDecompressContent(_("Content purported to be compressed with %s but failed to decompress.") % response.get('content-encoding'), response, content) | |
| return content | |
| def _updateCache(request_headers, response_headers, content, cache, cachekey): | |
| if cachekey: | |
| cc = _parse_cache_control(request_headers) | |
| cc_response = _parse_cache_control(response_headers) | |
| if cc.has_key('no-store') or cc_response.has_key('no-store'): | |
| cache.delete(cachekey) | |
| else: | |
| info = email.Message.Message() | |
| for key, value in response_headers.iteritems(): | |
| if key not in ['status','content-encoding','transfer-encoding']: | |
| info[key] = value | |
| # Add annotations to the cache to indicate what headers | |
| # are variant for this request. | |
| vary = response_headers.get('vary', None) | |
| if vary: | |
| vary_headers = vary.lower().replace(' ', '').split(',') | |
| for header in vary_headers: | |
| key = '-varied-%s' % header | |
| try: | |
| info[key] = request_headers[header] | |
| except KeyError: | |
| pass | |
| status = response_headers.status | |
| if status == 304: | |
| status = 200 | |
| status_header = 'status: %d\r\n' % response_headers.status | |
| header_str = info.as_string() | |
| header_str = re.sub("\r(?!\n)|(?<!\r)\n", "\r\n", header_str) | |
| text = "".join([status_header, header_str, content]) | |
| cache.set(cachekey, text) | |
| def _cnonce(): | |
| dig = _md5("%s:%s" % (time.ctime(), ["0123456789"[random.randrange(0, 9)] for i in range(20)])).hexdigest() | |
| return dig[:16] | |
| def _wsse_username_token(cnonce, iso_now, password): | |
| return base64.b64encode(_sha("%s%s%s" % (cnonce, iso_now, password)).digest()).strip() | |
| # For credentials we need two things, first | |
| # a pool of credential to try (not necesarily tied to BAsic, Digest, etc.) | |
| # Then we also need a list of URIs that have already demanded authentication | |
| # That list is tricky since sub-URIs can take the same auth, or the | |
| # auth scheme may change as you descend the tree. | |
| # So we also need each Auth instance to be able to tell us | |
| # how close to the 'top' it is. | |
| class Authentication(object): | |
| def __init__(self, credentials, host, request_uri, headers, response, content, http): | |
| (scheme, authority, path, query, fragment) = parse_uri(request_uri) | |
| self.path = path | |
| self.host = host | |
| self.credentials = credentials | |
| self.http = http | |
| def depth(self, request_uri): | |
| (scheme, authority, path, query, fragment) = parse_uri(request_uri) | |
| return request_uri[len(self.path):].count("/") | |
| def inscope(self, host, request_uri): | |
| # XXX Should we normalize the request_uri? | |
| (scheme, authority, path, query, fragment) = parse_uri(request_uri) | |
| return (host == self.host) and path.startswith(self.path) | |
| def request(self, method, request_uri, headers, content): | |
| """Modify the request headers to add the appropriate | |
| Authorization header. Over-rise this in sub-classes.""" | |
| pass | |
| def response(self, response, content): | |
| """Gives us a chance to update with new nonces | |
| or such returned from the last authorized response. | |
| Over-rise this in sub-classes if necessary. | |
| Return TRUE is the request is to be retried, for | |
| example Digest may return stale=true. | |
| """ | |
| return False | |
| class BasicAuthentication(Authentication): | |
| def __init__(self, credentials, host, request_uri, headers, response, content, http): | |
| Authentication.__init__(self, credentials, host, request_uri, headers, response, content, http) | |
| def request(self, method, request_uri, headers, content): | |
| """Modify the request headers to add the appropriate | |
| Authorization header.""" | |
| headers['authorization'] = 'Basic ' + base64.b64encode("%s:%s" % self.credentials).strip() | |
| class DigestAuthentication(Authentication): | |
| """Only do qop='auth' and MD5, since that | |
| is all Apache currently implements""" | |
| def __init__(self, credentials, host, request_uri, headers, response, content, http): | |
| Authentication.__init__(self, credentials, host, request_uri, headers, response, content, http) | |
| challenge = _parse_www_authenticate(response, 'www-authenticate') | |
| self.challenge = challenge['digest'] | |
| qop = self.challenge.get('qop', 'auth') | |
| self.challenge['qop'] = ('auth' in [x.strip() for x in qop.split()]) and 'auth' or None | |
| if self.challenge['qop'] is None: | |
| raise UnimplementedDigestAuthOptionError( _("Unsupported value for qop: %s." % qop)) | |
| self.challenge['algorithm'] = self.challenge.get('algorithm', 'MD5').upper() | |
| if self.challenge['algorithm'] != 'MD5': | |
| raise UnimplementedDigestAuthOptionError( _("Unsupported value for algorithm: %s." % self.challenge['algorithm'])) | |
| self.A1 = "".join([self.credentials[0], ":", self.challenge['realm'], ":", self.credentials[1]]) | |
| self.challenge['nc'] = 1 | |
| def request(self, method, request_uri, headers, content, cnonce = None): | |
| """Modify the request headers""" | |
| H = lambda x: _md5(x).hexdigest() | |
| KD = lambda s, d: H("%s:%s" % (s, d)) | |
| A2 = "".join([method, ":", request_uri]) | |
| self.challenge['cnonce'] = cnonce or _cnonce() | |
| request_digest = '"%s"' % KD(H(self.A1), "%s:%s:%s:%s:%s" % (self.challenge['nonce'], | |
| '%08x' % self.challenge['nc'], | |
| self.challenge['cnonce'], | |
| self.challenge['qop'], H(A2) | |
| )) | |
| headers['Authorization'] = 'Digest username="%s", realm="%s", nonce="%s", uri="%s", algorithm=%s, response=%s, qop=%s, nc=%08x, cnonce="%s"' % ( | |
| self.credentials[0], | |
| self.challenge['realm'], | |
| self.challenge['nonce'], | |
| request_uri, | |
| self.challenge['algorithm'], | |
| request_digest, | |
| self.challenge['qop'], | |
| self.challenge['nc'], | |
| self.challenge['cnonce'], | |
| ) | |
| self.challenge['nc'] += 1 | |
| def response(self, response, content): | |
| if not response.has_key('authentication-info'): | |
| challenge = _parse_www_authenticate(response, 'www-authenticate').get('digest', {}) | |
| if 'true' == challenge.get('stale'): | |
| self.challenge['nonce'] = challenge['nonce'] | |
| self.challenge['nc'] = 1 | |
| return True | |
| else: | |
| updated_challenge = _parse_www_authenticate(response, 'authentication-info').get('digest', {}) | |
| if updated_challenge.has_key('nextnonce'): | |
| self.challenge['nonce'] = updated_challenge['nextnonce'] | |
| self.challenge['nc'] = 1 | |
| return False | |
| class HmacDigestAuthentication(Authentication): | |
| """Adapted from Robert Sayre's code and DigestAuthentication above.""" | |
| __author__ = "Thomas Broyer ([email protected])" | |
| def __init__(self, credentials, host, request_uri, headers, response, content, http): | |
| Authentication.__init__(self, credentials, host, request_uri, headers, response, content, http) | |
| challenge = _parse_www_authenticate(response, 'www-authenticate') | |
| self.challenge = challenge['hmacdigest'] | |
| # TODO: self.challenge['domain'] | |
| self.challenge['reason'] = self.challenge.get('reason', 'unauthorized') | |
| if self.challenge['reason'] not in ['unauthorized', 'integrity']: | |
| self.challenge['reason'] = 'unauthorized' | |
| self.challenge['salt'] = self.challenge.get('salt', '') | |
| if not self.challenge.get('snonce'): | |
| raise UnimplementedHmacDigestAuthOptionError( _("The challenge doesn't contain a server nonce, or this one is empty.")) | |
| self.challenge['algorithm'] = self.challenge.get('algorithm', 'HMAC-SHA-1') | |
| if self.challenge['algorithm'] not in ['HMAC-SHA-1', 'HMAC-MD5']: | |
| raise UnimplementedHmacDigestAuthOptionError( _("Unsupported value for algorithm: %s." % self.challenge['algorithm'])) | |
| self.challenge['pw-algorithm'] = self.challenge.get('pw-algorithm', 'SHA-1') | |
| if self.challenge['pw-algorithm'] not in ['SHA-1', 'MD5']: | |
| raise UnimplementedHmacDigestAuthOptionError( _("Unsupported value for pw-algorithm: %s." % self.challenge['pw-algorithm'])) | |
| if self.challenge['algorithm'] == 'HMAC-MD5': | |
| self.hashmod = _md5 | |
| else: | |
| self.hashmod = _sha | |
| if self.challenge['pw-algorithm'] == 'MD5': | |
| self.pwhashmod = _md5 | |
| else: | |
| self.pwhashmod = _sha | |
| self.key = "".join([self.credentials[0], ":", | |
| self.pwhashmod.new("".join([self.credentials[1], self.challenge['salt']])).hexdigest().lower(), | |
| ":", self.challenge['realm'] | |
| ]) | |
| self.key = self.pwhashmod.new(self.key).hexdigest().lower() | |
| def request(self, method, request_uri, headers, content): | |
| """Modify the request headers""" | |
| keys = _get_end2end_headers(headers) | |
| keylist = "".join(["%s " % k for k in keys]) | |
| headers_val = "".join([headers[k] for k in keys]) | |
| created = time.strftime('%Y-%m-%dT%H:%M:%SZ',time.gmtime()) | |
| cnonce = _cnonce() | |
| request_digest = "%s:%s:%s:%s:%s" % (method, request_uri, cnonce, self.challenge['snonce'], headers_val) | |
| request_digest = hmac.new(self.key, request_digest, self.hashmod).hexdigest().lower() | |
| headers['Authorization'] = 'HMACDigest username="%s", realm="%s", snonce="%s", cnonce="%s", uri="%s", created="%s", response="%s", headers="%s"' % ( | |
| self.credentials[0], | |
| self.challenge['realm'], | |
| self.challenge['snonce'], | |
| cnonce, | |
| request_uri, | |
| created, | |
| request_digest, | |
| keylist, | |
| ) | |
| def response(self, response, content): | |
| challenge = _parse_www_authenticate(response, 'www-authenticate').get('hmacdigest', {}) | |
| if challenge.get('reason') in ['integrity', 'stale']: | |
| return True | |
| return False | |
| class WsseAuthentication(Authentication): | |
| """This is thinly tested and should not be relied upon. | |
| At this time there isn't any third party server to test against. | |
| Blogger and TypePad implemented this algorithm at one point | |
| but Blogger has since switched to Basic over HTTPS and | |
| TypePad has implemented it wrong, by never issuing a 401 | |
| challenge but instead requiring your client to telepathically know that | |
| their endpoint is expecting WSSE profile="UsernameToken".""" | |
| def __init__(self, credentials, host, request_uri, headers, response, content, http): | |
| Authentication.__init__(self, credentials, host, request_uri, headers, response, content, http) | |
| def request(self, method, request_uri, headers, content): | |
| """Modify the request headers to add the appropriate | |
| Authorization header.""" | |
| headers['Authorization'] = 'WSSE profile="UsernameToken"' | |
| iso_now = time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime()) | |
| cnonce = _cnonce() | |
| password_digest = _wsse_username_token(cnonce, iso_now, self.credentials[1]) | |
| headers['X-WSSE'] = 'UsernameToken Username="%s", PasswordDigest="%s", Nonce="%s", Created="%s"' % ( | |
| self.credentials[0], | |
| password_digest, | |
| cnonce, | |
| iso_now) | |
| class GoogleLoginAuthentication(Authentication): | |
| def __init__(self, credentials, host, request_uri, headers, response, content, http): | |
| from urllib import urlencode | |
| Authentication.__init__(self, credentials, host, request_uri, headers, response, content, http) | |
| challenge = _parse_www_authenticate(response, 'www-authenticate') | |
| service = challenge['googlelogin'].get('service', 'xapi') | |
| # Bloggger actually returns the service in the challenge | |
| # For the rest we guess based on the URI | |
| if service == 'xapi' and request_uri.find("calendar") > 0: | |
| service = "cl" | |
| # No point in guessing Base or Spreadsheet | |
| #elif request_uri.find("spreadsheets") > 0: | |
| # service = "wise" | |
| auth = dict(Email=credentials[0], Passwd=credentials[1], service=service, source=headers['user-agent']) | |
| resp, content = self.http.request("https://www.google.com/accounts/ClientLogin", method="POST", body=urlencode(auth), headers={'Content-Type': 'application/x-www-form-urlencoded'}) | |
| lines = content.split('\n') | |
| d = dict([tuple(line.split("=", 1)) for line in lines if line]) | |
| if resp.status == 403: | |
| self.Auth = "" | |
| else: | |
| self.Auth = d['Auth'] | |
| def request(self, method, request_uri, headers, content): | |
| """Modify the request headers to add the appropriate | |
| Authorization header.""" | |
| headers['authorization'] = 'GoogleLogin Auth=' + self.Auth | |
| AUTH_SCHEME_CLASSES = { | |
| "basic": BasicAuthentication, | |
| "wsse": WsseAuthentication, | |
| "digest": DigestAuthentication, | |
| "hmacdigest": HmacDigestAuthentication, | |
| "googlelogin": GoogleLoginAuthentication | |
| } | |
| AUTH_SCHEME_ORDER = ["hmacdigest", "googlelogin", "digest", "wsse", "basic"] | |
| class FileCache(object): | |
| """Uses a local directory as a store for cached files. | |
| Not really safe to use if multiple threads or processes are going to | |
| be running on the same cache. | |
| """ | |
| def __init__(self, cache, safe=safename): # use safe=lambda x: md5.new(x).hexdigest() for the old behavior | |
| self.cache = cache | |
| self.safe = safe | |
| if not os.path.exists(cache): | |
| os.makedirs(self.cache) | |
| def get(self, key): | |
| retval = None | |
| cacheFullPath = os.path.join(self.cache, self.safe(key)) | |
| try: | |
| f = file(cacheFullPath, "rb") | |
| retval = f.read() | |
| f.close() | |
| except IOError: | |
| pass | |
| return retval | |
| def set(self, key, value): | |
| cacheFullPath = os.path.join(self.cache, self.safe(key)) | |
| f = file(cacheFullPath, "wb") | |
| f.write(value) | |
| f.close() | |
| def delete(self, key): | |
| cacheFullPath = os.path.join(self.cache, self.safe(key)) | |
| if os.path.exists(cacheFullPath): | |
| os.remove(cacheFullPath) | |
| class Credentials(object): | |
| def __init__(self): | |
| self.credentials = [] | |
| def add(self, name, password, domain=""): | |
| self.credentials.append((domain.lower(), name, password)) | |
| def clear(self): | |
| self.credentials = [] | |
| def iter(self, domain): | |
| for (cdomain, name, password) in self.credentials: | |
| if cdomain == "" or domain == cdomain: | |
| yield (name, password) | |
| class KeyCerts(Credentials): | |
| """Identical to Credentials except that | |
| name/password are mapped to key/cert.""" | |
| pass | |
| class ProxyInfo(object): | |
| """Collect information required to use a proxy.""" | |
| def __init__(self, proxy_type, proxy_host, proxy_port, proxy_rdns=None, proxy_user=None, proxy_pass=None): | |
| """The parameter proxy_type must be set to one of socks.PROXY_TYPE_XXX | |
| constants. For example: | |
| p = ProxyInfo(proxy_type=socks.PROXY_TYPE_HTTP, proxy_host='localhost', proxy_port=8000) | |
| """ | |
| self.proxy_type, self.proxy_host, self.proxy_port, self.proxy_rdns, self.proxy_user, self.proxy_pass = proxy_type, proxy_host, proxy_port, proxy_rdns, proxy_user, proxy_pass | |
| def astuple(self): | |
| return (self.proxy_type, self.proxy_host, self.proxy_port, self.proxy_rdns, | |
| self.proxy_user, self.proxy_pass) | |
| def isgood(self): | |
| return (self.proxy_host != None) and (self.proxy_port != None) | |
| class HTTPConnectionWithTimeout(httplib.HTTPConnection): | |
| """HTTPConnection subclass that supports timeouts""" | |
| def __init__(self, host, port=None, strict=None, timeout=None, proxy_info=None): | |
| httplib.HTTPConnection.__init__(self, host, port, strict) | |
| self.timeout = timeout | |
| self.proxy_info = proxy_info | |
| def connect(self): | |
| """Connect to the host and port specified in __init__.""" | |
| # Mostly verbatim from httplib.py. | |
| if self.proxy_info and socks is None: | |
| raise ProxiesUnavailableError( | |
| 'Proxy support missing but proxy use was requested!') | |
| msg = "getaddrinfo returns an empty list" | |
| for res in socket.getaddrinfo(self.host, self.port, 0, | |
| socket.SOCK_STREAM): | |
| af, socktype, proto, canonname, sa = res | |
| try: | |
| if self.proxy_info and self.proxy_info.isgood(): | |
| self.sock = socks.socksocket(af, socktype, proto) | |
| self.sock.setproxy(*self.proxy_info.astuple()) | |
| else: | |
| self.sock = socket.socket(af, socktype, proto) | |
| self.sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1) | |
| # Different from httplib: support timeouts. | |
| if has_timeout(self.timeout): | |
| self.sock.settimeout(self.timeout) | |
| # End of difference from httplib. | |
| if self.debuglevel > 0: | |
| print "connect: (%s, %s)" % (self.host, self.port) | |
| self.sock.connect(sa) | |
| except socket.error, msg: | |
| if self.debuglevel > 0: | |
| print 'connect fail:', (self.host, self.port) | |
| if self.sock: | |
| self.sock.close() | |
| self.sock = None | |
| continue | |
| break | |
| if not self.sock: | |
| raise socket.error, msg | |
| class HTTPSConnectionWithTimeout(httplib.HTTPSConnection): | |
| "This class allows communication via SSL." | |
| def __init__(self, host, port=None, key_file=None, cert_file=None, | |
| strict=None, timeout=None, proxy_info=None): | |
| httplib.HTTPSConnection.__init__(self, host, port=port, key_file=key_file, | |
| cert_file=cert_file, strict=strict) | |
| self.timeout = timeout | |
| self.proxy_info = proxy_info | |
| def connect(self): | |
| "Connect to a host on a given (SSL) port." | |
| if self.proxy_info and self.proxy_info.isgood(): | |
| sock = socks.socksocket(socket.AF_INET, socket.SOCK_STREAM) | |
| sock.setproxy(*self.proxy_info.astuple()) | |
| else: | |
| sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) | |
| sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1) | |
| if has_timeout(self.timeout): | |
| sock.settimeout(self.timeout) | |
| sock.connect((self.host, self.port)) | |
| self.sock =_ssl_wrap_socket(sock, self.key_file, self.cert_file) | |
| class Http(object): | |
| """An HTTP client that handles: | |
| - all methods | |
| - caching | |
| - ETags | |
| - compression, | |
| - HTTPS | |
| - Basic | |
| - Digest | |
| - WSSE | |
| and more. | |
| """ | |
| def __init__(self, cache=None, timeout=None, proxy_info=None): | |
| """The value of proxy_info is a ProxyInfo instance. | |
| If 'cache' is a string then it is used as a directory name | |
| for a disk cache. Otherwise it must be an object that supports | |
| the same interface as FileCache.""" | |
| self.proxy_info = proxy_info | |
| # Map domain name to an httplib connection | |
| self.connections = {} | |
| # The location of the cache, for now a directory | |
| # where cached responses are held. | |
| if cache and isinstance(cache, str): | |
| self.cache = FileCache(cache) | |
| else: | |
| self.cache = cache | |
| # Name/password | |
| self.credentials = Credentials() | |
| # Key/cert | |
| self.certificates = KeyCerts() | |
| # authorization objects | |
| self.authorizations = [] | |
| # If set to False then no redirects are followed, even safe ones. | |
| self.follow_redirects = True | |
| # Which HTTP methods do we apply optimistic concurrency to, i.e. | |
| # which methods get an "if-match:" etag header added to them. | |
| self.optimistic_concurrency_methods = ["PUT"] | |
| # If 'follow_redirects' is True, and this is set to True then | |
| # all redirecs are followed, including unsafe ones. | |
| self.follow_all_redirects = False | |
| self.ignore_etag = False | |
| self.force_exception_to_status_code = False | |
| self.timeout = timeout | |
| def _auth_from_challenge(self, host, request_uri, headers, response, content): | |
| """A generator that creates Authorization objects | |
| that can be applied to requests. | |
| """ | |
| challenges = _parse_www_authenticate(response, 'www-authenticate') | |
| for cred in self.credentials.iter(host): | |
| for scheme in AUTH_SCHEME_ORDER: | |
| if challenges.has_key(scheme): | |
| yield AUTH_SCHEME_CLASSES[scheme](cred, host, request_uri, headers, response, content, self) | |
| def add_credentials(self, name, password, domain=""): | |
| """Add a name and password that will be used | |
| any time a request requires authentication.""" | |
| self.credentials.add(name, password, domain) | |
| def add_certificate(self, key, cert, domain): | |
| """Add a key and cert that will be used | |
| any time a request requires authentication.""" | |
| self.certificates.add(key, cert, domain) | |
| def clear_credentials(self): | |
| """Remove all the names and passwords | |
| that are used for authentication""" | |
| self.credentials.clear() | |
| self.authorizations = [] | |
| def _conn_request(self, conn, request_uri, method, body, headers): | |
| for i in range(2): | |
| try: | |
| conn.request(method, request_uri, body, headers) | |
| except socket.gaierror: | |
| conn.close() | |
| raise ServerNotFoundError("Unable to find the server at %s" % conn.host) | |
| except socket.error, e: | |
| if e.errno == errno.ECONNREFUSED: # Connection refused | |
| raise | |
| except httplib.HTTPException: | |
| # Just because the server closed the connection doesn't apparently mean | |
| # that the server didn't send a response. | |
| pass | |
| try: | |
| response = conn.getresponse() | |
| except (socket.error, httplib.HTTPException): | |
| if i == 0: | |
| conn.close() | |
| conn.connect() | |
| continue | |
| else: | |
| raise | |
| else: | |
| content = "" | |
| if method == "HEAD": | |
| response.close() | |
| else: | |
| content = response.read() | |
| response = Response(response) | |
| if method != "HEAD": | |
| content = _decompressContent(response, content) | |
| break | |
| return (response, content) | |
| def _request(self, conn, host, absolute_uri, request_uri, method, body, headers, redirections, cachekey): | |
| """Do the actual request using the connection object | |
| and also follow one level of redirects if necessary""" | |
| auths = [(auth.depth(request_uri), auth) for auth in self.authorizations if auth.inscope(host, request_uri)] | |
| auth = auths and sorted(auths)[0][1] or None | |
| if auth: | |
| auth.request(method, request_uri, headers, body) | |
| (response, content) = self._conn_request(conn, request_uri, method, body, headers) | |
| if auth: | |
| if auth.response(response, body): | |
| auth.request(method, request_uri, headers, body) | |
| (response, content) = self._conn_request(conn, request_uri, method, body, headers ) | |
| response._stale_digest = 1 | |
| if response.status == 401: | |
| for authorization in self._auth_from_challenge(host, request_uri, headers, response, content): | |
| authorization.request(method, request_uri, headers, body) | |
| (response, content) = self._conn_request(conn, request_uri, method, body, headers, ) | |
| if response.status != 401: | |
| self.authorizations.append(authorization) | |
| authorization.response(response, body) | |
| break | |
| if (self.follow_all_redirects or (method in ["GET", "HEAD"]) or response.status == 303): | |
| if self.follow_redirects and response.status in [300, 301, 302, 303, 307]: | |
| # Pick out the location header and basically start from the beginning | |
| # remembering first to strip the ETag header and decrement our 'depth' | |
| if redirections: | |
| if not response.has_key('location') and response.status != 300: | |
| raise RedirectMissingLocation( _("Redirected but the response is missing a Location: header."), response, content) | |
| # Fix-up relative redirects (which violate an RFC 2616 MUST) | |
| if response.has_key('location'): | |
| location = response['location'] | |
| (scheme, authority, path, query, fragment) = parse_uri(location) | |
| if authority == None: | |
| response['location'] = urlparse.urljoin(absolute_uri, location) | |
| if response.status == 301 and method in ["GET", "HEAD"]: | |
| response['-x-permanent-redirect-url'] = response['location'] | |
| if not response.has_key('content-location'): | |
| response['content-location'] = absolute_uri | |
| _updateCache(headers, response, content, self.cache, cachekey) | |
| if headers.has_key('if-none-match'): | |
| del headers['if-none-match'] | |
| if headers.has_key('if-modified-since'): | |
| del headers['if-modified-since'] | |
| if response.has_key('location'): | |
| location = response['location'] | |
| old_response = copy.deepcopy(response) | |
| if not old_response.has_key('content-location'): | |
| old_response['content-location'] = absolute_uri | |
| redirect_method = ((response.status == 303) and (method not in ["GET", "HEAD"])) and "GET" or method | |
| (response, content) = self.request(location, redirect_method, body=body, headers = headers, redirections = redirections - 1) | |
| response.previous = old_response | |
| else: | |
| raise RedirectLimit( _("Redirected more times than rediection_limit allows."), response, content) | |
| elif response.status in [200, 203] and method == "GET": | |
| # Don't cache 206's since we aren't going to handle byte range requests | |
| if not response.has_key('content-location'): | |
| response['content-location'] = absolute_uri | |
| _updateCache(headers, response, content, self.cache, cachekey) | |
| return (response, content) | |
| def _normalize_headers(self, headers): | |
| return _normalize_headers(headers) | |
| # Need to catch and rebrand some exceptions | |
| # Then need to optionally turn all exceptions into status codes | |
| # including all socket.* and httplib.* exceptions. | |
| def request(self, uri, method="GET", body=None, headers=None, redirections=DEFAULT_MAX_REDIRECTS, connection_type=None): | |
| """ Performs a single HTTP request. | |
| The 'uri' is the URI of the HTTP resource and can begin | |
| with either 'http' or 'https'. The value of 'uri' must be an absolute URI. | |
| The 'method' is the HTTP method to perform, such as GET, POST, DELETE, etc. | |
| There is no restriction on the methods allowed. | |
| The 'body' is the entity body to be sent with the request. It is a string | |
| object. | |
| Any extra headers that are to be sent with the request should be provided in the | |
| 'headers' dictionary. | |
| The maximum number of redirect to follow before raising an | |
| exception is 'redirections. The default is 5. | |
| The return value is a tuple of (response, content), the first | |
| being and instance of the 'Response' class, the second being | |
| a string that contains the response entity body. | |
| """ | |
| try: | |
| if headers is None: | |
| headers = {} | |
| else: | |
| headers = self._normalize_headers(headers) | |
| if not headers.has_key('user-agent'): | |
| headers['user-agent'] = "Python-httplib2/%s" % __version__ | |
| uri = iri2uri(uri) | |
| (scheme, authority, request_uri, defrag_uri) = urlnorm(uri) | |
| domain_port = authority.split(":")[0:2] | |
| if len(domain_port) == 2 and domain_port[1] == '443' and scheme == 'http': | |
| scheme = 'https' | |
| authority = domain_port[0] | |
| conn_key = scheme+":"+authority | |
| if conn_key in self.connections: | |
| conn = self.connections[conn_key] | |
| else: | |
| if not connection_type: | |
| connection_type = (scheme == 'https') and HTTPSConnectionWithTimeout or HTTPConnectionWithTimeout | |
| certs = list(self.certificates.iter(authority)) | |
| if scheme == 'https' and certs: | |
| conn = self.connections[conn_key] = connection_type(authority, key_file=certs[0][0], | |
| cert_file=certs[0][1], timeout=self.timeout, proxy_info=self.proxy_info) | |
| else: | |
| conn = self.connections[conn_key] = connection_type(authority, timeout=self.timeout, proxy_info=self.proxy_info) | |
| conn.set_debuglevel(debuglevel) | |
| if method in ["GET", "HEAD"] and 'range' not in headers and 'accept-encoding' not in headers: | |
| headers['accept-encoding'] = 'gzip, deflate' | |
| info = email.Message.Message() | |
| cached_value = None | |
| if self.cache: | |
| cachekey = defrag_uri | |
| cached_value = self.cache.get(cachekey) | |
| if cached_value: | |
| # info = email.message_from_string(cached_value) | |
| # | |
| # Need to replace the line above with the kludge below | |
| # to fix the non-existent bug not fixed in this | |
| # bug report: http://mail.python.org/pipermail/python-bugs-list/2005-September/030289.html | |
| try: | |
| info, content = cached_value.split('\r\n\r\n', 1) | |
| feedparser = email.FeedParser.FeedParser() | |
| feedparser.feed(info) | |
| info = feedparser.close() | |
| feedparser._parse = None | |
| except IndexError: | |
| self.cache.delete(cachekey) | |
| cachekey = None | |
| cached_value = None | |
| else: | |
| cachekey = None | |
| if method in self.optimistic_concurrency_methods and self.cache and info.has_key('etag') and not self.ignore_etag and 'if-match' not in headers: | |
| # http://www.w3.org/1999/04/Editing/ | |
| headers['if-match'] = info['etag'] | |
| if method not in ["GET", "HEAD"] and self.cache and cachekey: | |
| # RFC 2616 Section 13.10 | |
| self.cache.delete(cachekey) | |
| # Check the vary header in the cache to see if this request | |
| # matches what varies in the cache. | |
| if method in ['GET', 'HEAD'] and 'vary' in info: | |
| vary = info['vary'] | |
| vary_headers = vary.lower().replace(' ', '').split(',') | |
| for header in vary_headers: | |
| key = '-varied-%s' % header | |
| value = info[key] | |
| if headers.get(header, None) != value: | |
| cached_value = None | |
| break | |
| if cached_value and method in ["GET", "HEAD"] and self.cache and 'range' not in headers: | |
| if info.has_key('-x-permanent-redirect-url'): | |
| # Should cached permanent redirects be counted in our redirection count? For now, yes. | |
| (response, new_content) = self.request(info['-x-permanent-redirect-url'], "GET", headers = headers, redirections = redirections - 1) | |
| response.previous = Response(info) | |
| response.previous.fromcache = True | |
| else: | |
| # Determine our course of action: | |
| # Is the cached entry fresh or stale? | |
| # Has the client requested a non-cached response? | |
| # | |
| # There seems to be three possible answers: | |
| # 1. [FRESH] Return the cache entry w/o doing a GET | |
| # 2. [STALE] Do the GET (but add in cache validators if available) | |
| # 3. [TRANSPARENT] Do a GET w/o any cache validators (Cache-Control: no-cache) on the request | |
| entry_disposition = _entry_disposition(info, headers) | |
| if entry_disposition == "FRESH": | |
| if not cached_value: | |
| info['status'] = '504' | |
| content = "" | |
| response = Response(info) | |
| if cached_value: | |
| response.fromcache = True | |
| return (response, content) | |
| if entry_disposition == "STALE": | |
| if info.has_key('etag') and not self.ignore_etag and not 'if-none-match' in headers: | |
| headers['if-none-match'] = info['etag'] | |
| if info.has_key('last-modified') and not 'last-modified' in headers: | |
| headers['if-modified-since'] = info['last-modified'] | |
| elif entry_disposition == "TRANSPARENT": | |
| pass | |
| (response, new_content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey) | |
| if response.status == 304 and method == "GET": | |
| # Rewrite the cache entry with the new end-to-end headers | |
| # Take all headers that are in response | |
| # and overwrite their values in info. | |
| # unless they are hop-by-hop, or are listed in the connection header. | |
| for key in _get_end2end_headers(response): | |
| info[key] = response[key] | |
| merged_response = Response(info) | |
| if hasattr(response, "_stale_digest"): | |
| merged_response._stale_digest = response._stale_digest | |
| _updateCache(headers, merged_response, content, self.cache, cachekey) | |
| response = merged_response | |
| response.status = 200 | |
| response.fromcache = True | |
| elif response.status == 200: | |
| content = new_content | |
| else: | |
| self.cache.delete(cachekey) | |
| content = new_content | |
| else: | |
| cc = _parse_cache_control(headers) | |
| if cc.has_key('only-if-cached'): | |
| info['status'] = '504' | |
| response = Response(info) | |
| content = "" | |
| else: | |
| (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey) | |
| except Exception, e: | |
| if self.force_exception_to_status_code: | |
| if isinstance(e, HttpLib2ErrorWithResponse): | |
| response = e.response | |
| content = e.content | |
| response.status = 500 | |
| response.reason = str(e) | |
| elif isinstance(e, socket.timeout): | |
| content = "Request Timeout" | |
| response = Response( { | |
| "content-type": "text/plain", | |
| "status": "408", | |
| "content-length": len(content) | |
| }) | |
| response.reason = "Request Timeout" | |
| else: | |
| content = str(e) | |
| response = Response( { | |
| "content-type": "text/plain", | |
| "status": "400", | |
| "content-length": len(content) | |
| }) | |
| response.reason = "Bad Request" | |
| else: | |
| raise | |
| return (response, content) | |
| class Response(dict): | |
| """An object more like email.Message than httplib.HTTPResponse.""" | |
| """Is this response from our local cache""" | |
| fromcache = False | |
| """HTTP protocol version used by server. 10 for HTTP/1.0, 11 for HTTP/1.1. """ | |
| version = 11 | |
| "Status code returned by server. " | |
| status = 200 | |
| """Reason phrase returned by server.""" | |
| reason = "Ok" | |
| previous = None | |
| def __init__(self, info): | |
| # info is either an email.Message or | |
| # an httplib.HTTPResponse object. | |
| if isinstance(info, httplib.HTTPResponse): | |
| for key, value in info.getheaders(): | |
| self[key.lower()] = value | |
| self.status = info.status | |
| self['status'] = str(self.status) | |
| self.reason = info.reason | |
| self.version = info.version | |
| elif isinstance(info, email.Message.Message): | |
| for key, value in info.items(): | |
| self[key] = value | |
| self.status = int(self['status']) | |
| else: | |
| for key, value in info.iteritems(): | |
| self[key] = value | |
| self.status = int(self.get('status', self.status)) | |
| def __getattr__(self, name): | |
| if name == 'dict': | |
| return self | |
| else: | |
| raise AttributeError, name |