| #!/usr/bin/env python |
| # |
| # Copyright 2007 Google Inc. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| |
| |
| |
| """Copyright 2008 Python Software Foundation, Ian Bicking, and Google.""" |
| |
| import inspect |
| import mimetools |
| import StringIO |
| import sys |
| |
| |
| CONTINUE = 100 |
| SWITCHING_PROTOCOLS = 101 |
| PROCESSING = 102 |
| OK = 200 |
| CREATED = 201 |
| ACCEPTED = 202 |
| NON_AUTHORITATIVE_INFORMATION = 203 |
| NO_CONTENT = 204 |
| RESET_CONTENT = 205 |
| PARTIAL_CONTENT = 206 |
| MULTI_STATUS = 207 |
| IM_USED = 226 |
| MULTIPLE_CHOICES = 300 |
| MOVED_PERMANENTLY = 301 |
| FOUND = 302 |
| SEE_OTHER = 303 |
| NOT_MODIFIED = 304 |
| USE_PROXY = 305 |
| TEMPORARY_REDIRECT = 307 |
| BAD_REQUEST = 400 |
| UNAUTHORIZED = 401 |
| PAYMENT_REQUIRED = 402 |
| FORBIDDEN = 403 |
| NOT_FOUND = 404 |
| METHOD_NOT_ALLOWED = 405 |
| NOT_ACCEPTABLE = 406 |
| PROXY_AUTHENTICATION_REQUIRED = 407 |
| REQUEST_TIMEOUT = 408 |
| CONFLICT = 409 |
| GONE = 410 |
| LENGTH_REQUIRED = 411 |
| PRECONDITION_FAILED = 412 |
| REQUEST_ENTITY_TOO_LARGE = 413 |
| REQUEST_URI_TOO_LONG = 414 |
| UNSUPPORTED_MEDIA_TYPE = 415 |
| REQUESTED_RANGE_NOT_SATISFIABLE = 416 |
| EXPECTATION_FAILED = 417 |
| UNPROCESSABLE_ENTITY = 422 |
| LOCKED = 423 |
| FAILED_DEPENDENCY = 424 |
| UPGRADE_REQUIRED = 426 |
| INTERNAL_SERVER_ERROR = 500 |
| NOT_IMPLEMENTED = 501 |
| BAD_GATEWAY = 502 |
| SERVICE_UNAVAILABLE = 503 |
| GATEWAY_TIMEOUT = 504 |
| HTTP_VERSION_NOT_SUPPORTED = 505 |
| INSUFFICIENT_STORAGE = 507 |
| NOT_EXTENDED = 510 |
| |
| responses = { |
| 100: 'Continue', |
| 101: 'Switching Protocols', |
| |
| 200: 'OK', |
| 201: 'Created', |
| 202: 'Accepted', |
| 203: 'Non-Authoritative Information', |
| 204: 'No Content', |
| 205: 'Reset Content', |
| 206: 'Partial Content', |
| |
| 300: 'Multiple Choices', |
| 301: 'Moved Permanently', |
| 302: 'Found', |
| 303: 'See Other', |
| 304: 'Not Modified', |
| 305: 'Use Proxy', |
| 306: '(Unused)', |
| 307: 'Temporary Redirect', |
| |
| 400: 'Bad Request', |
| 401: 'Unauthorized', |
| 402: 'Payment Required', |
| 403: 'Forbidden', |
| 404: 'Not Found', |
| 405: 'Method Not Allowed', |
| 406: 'Not Acceptable', |
| 407: 'Proxy Authentication Required', |
| 408: 'Request Timeout', |
| 409: 'Conflict', |
| 410: 'Gone', |
| 411: 'Length Required', |
| 412: 'Precondition Failed', |
| 413: 'Request Entity Too Large', |
| 414: 'Request-URI Too Long', |
| 415: 'Unsupported Media Type', |
| 416: 'Requested Range Not Satisfiable', |
| 417: 'Expectation Failed', |
| |
| 500: 'Internal Server Error', |
| 501: 'Not Implemented', |
| 502: 'Bad Gateway', |
| 503: 'Service Unavailable', |
| 504: 'Gateway Timeout', |
| 505: 'HTTP Version Not Supported', |
| } |
| |
| HTTP_PORT = 80 |
| HTTPS_PORT = 443 |
| |
| |
| |
| |
| |
| class HTTPConnection: |
| |
| |
| protocol = 'http' |
| default_port = HTTP_PORT |
| _allow_truncated = True |
| _follow_redirects = False |
| |
| def __init__(self, host, port=None, strict=False, timeout=None): |
| |
| |
| |
| from google.appengine.api import urlfetch |
| self._fetch = urlfetch.fetch |
| self._method_map = { |
| 'GET': urlfetch.GET, |
| 'POST': urlfetch.POST, |
| 'HEAD': urlfetch.HEAD, |
| 'PUT': urlfetch.PUT, |
| 'DELETE': urlfetch.DELETE, |
| 'PATCH': urlfetch.PATCH, |
| } |
| |
| self.host = host |
| self.port = port |
| |
| self._method = self._url = None |
| self._body = '' |
| self.headers = [] |
| |
| |
| |
| if not isinstance(timeout, (float, int, long)): |
| timeout = None |
| self.timeout = timeout |
| |
| def connect(self): |
| pass |
| |
| def request(self, method, url, body=None, headers=None): |
| self._method = method |
| self._url = url |
| try: |
| self._body = body.read() |
| except AttributeError: |
| self._body = body |
| if headers is None: |
| headers = [] |
| elif hasattr(headers, 'items'): |
| headers = headers.items() |
| self.headers = headers |
| |
| def putrequest(self, request, selector, skip_host=False, skip_accept_encoding=False): |
| |
| self._method = request |
| self._url = selector |
| |
| def putheader(self, header, *lines): |
| line = '\r\n\t'.join([str(line) for line in lines]) |
| self.headers.append((header, line)) |
| |
| def endheaders(self, message_body=None): |
| |
| if message_body is not None: |
| self.send(message_body) |
| |
| def set_debuglevel(self, level=None): |
| pass |
| |
| def send(self, data): |
| self._body += data |
| |
| @staticmethod |
| def _getargspec(callable_object): |
| assert callable(callable_object) |
| try: |
| |
| return inspect.getargspec(callable_object) |
| except TypeError: |
| |
| return inspect.getargspec(callable_object.__call__) |
| |
| def getresponse(self): |
| if self.port and self.port != self.default_port: |
| host = '%s:%s' % (self.host, self.port) |
| else: |
| host = self.host |
| if not self._url.startswith(self.protocol): |
| url = '%s://%s%s' % (self.protocol, host, self._url) |
| else: |
| url = self._url |
| headers = dict(self.headers) |
| |
| try: |
| method = self._method_map[self._method.upper()] |
| except KeyError: |
| raise ValueError("%r is an unrecognized HTTP method" % self._method) |
| |
| |
| |
| |
| |
| args, _, keywords, _ = self._getargspec(self._fetch) |
| extra_kwargs = ( |
| {'validate_certificate': False} |
| if keywords or 'validate_certificate' in args |
| else {}) |
| response = self._fetch(url, self._body, method, headers, |
| self._allow_truncated, self._follow_redirects, |
| deadline=self.timeout, **extra_kwargs) |
| return HTTPResponse(response) |
| |
| def close(self): |
| pass |
| |
| |
| class HTTPSConnection(HTTPConnection): |
| |
| protocol = 'https' |
| default_port = HTTPS_PORT |
| |
| def __init__(self, host, port=None, key_file=None, cert_file=None, |
| strict=False, timeout=None): |
| |
| if key_file is not None or cert_file is not None: |
| raise NotImplementedError( |
| "key_file and cert_file arguments are not implemented") |
| HTTPConnection.__init__(self, host, port=port, strict=strict, |
| timeout=timeout) |
| |
| |
| class HTTPMessage(mimetools.Message): |
| |
| def addheader(self, key, value): |
| """Add header for field key handling repeats.""" |
| prev = self.dict.get(key) |
| if prev is None: |
| self.dict[key] = value |
| else: |
| combined = ", ".join((prev, value)) |
| self.dict[key] = combined |
| |
| def addcontinue(self, key, more): |
| """Add more field data from a continuation line.""" |
| prev = self.dict[key] |
| self.dict[key] = prev + "\n " + more |
| |
| def readheaders(self): |
| """Read header lines. |
| |
| Read header lines up to the entirely blank line that terminates them. |
| The (normally blank) line that ends the headers is skipped, but not |
| included in the returned list. If a non-header line ends the headers, |
| (which is an error), an attempt is made to backspace over it; it is |
| never included in the returned list. |
| |
| The variable self.status is set to the empty string if all went well, |
| otherwise it is an error message. The variable self.headers is a |
| completely uninterpreted list of lines contained in the header (so |
| printing them will reproduce the header exactly as it appears in the |
| file). |
| |
| If multiple header fields with the same name occur, they are combined |
| according to the rules in RFC 2616 sec 4.2: |
| |
| Appending each subsequent field-value to the first, each separated |
| by a comma. The order in which header fields with the same field-name |
| are received is significant to the interpretation of the combined |
| field value. |
| """ |
| |
| |
| |
| |
| |
| self.dict = {} |
| self.unixfrom = '' |
| self.headers = hlist = [] |
| self.status = '' |
| headerseen = "" |
| firstline = 1 |
| startofline = unread = tell = None |
| if hasattr(self.fp, 'unread'): |
| unread = self.fp.unread |
| elif self.seekable: |
| tell = self.fp.tell |
| while True: |
| if tell: |
| try: |
| startofline = tell() |
| except IOError: |
| startofline = tell = None |
| self.seekable = 0 |
| line = self.fp.readline() |
| if not line: |
| self.status = 'EOF in headers' |
| break |
| |
| if firstline and line.startswith('From '): |
| self.unixfrom = self.unixfrom + line |
| continue |
| firstline = 0 |
| if headerseen and line[0] in ' \t': |
| |
| |
| |
| hlist.append(line) |
| self.addcontinue(headerseen, line.strip()) |
| continue |
| elif self.iscomment(line): |
| |
| continue |
| elif self.islast(line): |
| |
| break |
| headerseen = self.isheader(line) |
| if headerseen: |
| |
| hlist.append(line) |
| self.addheader(headerseen, line[len(headerseen)+1:].strip()) |
| continue |
| else: |
| |
| if not self.dict: |
| self.status = 'No headers' |
| else: |
| self.status = 'Non-header line where header expected' |
| |
| if unread: |
| unread(line) |
| elif tell: |
| self.fp.seek(startofline) |
| else: |
| self.status = self.status + '; bad seek' |
| break |
| |
| class HTTPResponse(object): |
| |
| def __init__(self, fetch_response): |
| self._fetch_response = fetch_response |
| self.fp = StringIO.StringIO(fetch_response.content) |
| |
| def __getattr__(self, attr): |
| return getattr(self.fp, attr) |
| |
| def getheader(self, name, default=None): |
| return self._fetch_response.headers.get(name, default) |
| |
| def getheaders(self): |
| return self._fetch_response.headers.items() |
| |
| @property |
| def msg(self): |
| return self._fetch_response.header_msg |
| |
| version = 11 |
| |
| @property |
| def status(self): |
| return self._fetch_response.status_code |
| |
| @property |
| def reason(self): |
| return responses.get(self._fetch_response.status_code, 'Unknown') |
| |
| |
| |
| class HTTP: |
| "Compatibility class with httplib.py from 1.5." |
| |
| _http_vsn = 11 |
| _http_vsn_str = 'HTTP/1.1' |
| |
| debuglevel = 0 |
| |
| _connection_class = HTTPConnection |
| |
| def __init__(self, host='', port=None, strict=None): |
| "Provide a default host, since the superclass requires one." |
| |
| |
| if port == 0: |
| port = None |
| |
| |
| |
| |
| self._setup(self._connection_class(host, port, strict)) |
| |
| def _setup(self, conn): |
| self._conn = conn |
| |
| |
| self.send = conn.send |
| self.putrequest = conn.putrequest |
| self.endheaders = conn.endheaders |
| self.set_debuglevel = conn.set_debuglevel |
| |
| conn._http_vsn = self._http_vsn |
| conn._http_vsn_str = self._http_vsn_str |
| |
| self.file = None |
| |
| def connect(self, host=None, port=None): |
| "Accept arguments to set the host/port, since the superclass doesn't." |
| self.__init__(host, port) |
| |
| def getfile(self): |
| "Provide a getfile, since the superclass' does not use this concept." |
| return self.file |
| |
| def putheader(self, header, *values): |
| "The superclass allows only one value argument." |
| self._conn.putheader(header, '\r\n\t'.join([str(v) for v in values])) |
| |
| def getreply(self): |
| """Compat definition since superclass does not define it. |
| |
| Returns a tuple consisting of: |
| - server status code (e.g. '200' if all goes well) |
| - server "reason" corresponding to status code |
| - any RFC822 headers in the response from the server |
| """ |
| response = self._conn.getresponse() |
| self.headers = response.msg |
| self.file = response.fp |
| return response.status, response.reason, response.msg |
| |
| def close(self): |
| self._conn.close() |
| |
| |
| |
| |
| |
| |
| self.file = None |
| |
| |
| |
| class HTTPS(HTTP): |
| """Compatibility with 1.5 httplib interface |
| |
| Python 1.5.2 did not have an HTTPS class, but it defined an |
| interface for sending http requests that is also useful for |
| https. |
| """ |
| |
| _connection_class = HTTPSConnection |
| |
| def __init__(self, host='', port=None, key_file=None, cert_file=None, |
| strict=None): |
| if key_file is not None or cert_file is not None: |
| raise NotImplementedError( |
| "key_file and cert_file arguments are not implemented") |
| |
| |
| |
| |
| if port == 0: |
| port = None |
| self._setup(self._connection_class(host, port, key_file, |
| cert_file, strict)) |
| |
| |
| |
| self.key_file = key_file |
| self.cert_file = cert_file |
| |
| |
| class HTTPException(Exception): |
| pass |
| |
| class NotConnected(HTTPException): |
| pass |
| |
| class InvalidURL(HTTPException): |
| pass |
| |
| class UnknownProtocol(HTTPException): |
| def __init__(self, version): |
| self.version = version |
| HTTPException.__init__(self, version) |
| |
| class UnknownTransferEncoding(HTTPException): |
| pass |
| |
| class UnimplementedFileMode(HTTPException): |
| pass |
| |
| class IncompleteRead(HTTPException): |
| def __init__(self, partial): |
| self.partial = partial |
| HTTPException.__init__(self, partial) |
| |
| class ImproperConnectionState(HTTPException): |
| pass |
| |
| class CannotSendRequest(ImproperConnectionState): |
| pass |
| |
| class CannotSendHeader(ImproperConnectionState): |
| pass |
| |
| class ResponseNotReady(ImproperConnectionState): |
| pass |
| |
| class BadStatusLine(HTTPException): |
| def __init__(self, line): |
| self.line = line |
| HTTPException.__init__(self, line) |
| |
| error = HTTPException |