"""IMAP4 client. Based on RFC 2060. Public class: IMAP4 Public variable: Debug Public functions: Internaldate2tuple Int2AP ParseFlags Time2Internaldate """ # Author: Piers Lauder December 1997. # # Authentication code contributed by Donn Cave June 1998. # String method conversion by ESR, February 2001. # GET/SETACL contributed by Anthony Baxter April 2001. # IMAP4_SSL contributed by Tino Lange March 2002. # GET/SETQUOTA contributed by Andreas Zeidler June 2002. __version__ = "2.53" import binascii, re, socket, time, random, sys __all__ = ["IMAP4", "IMAP4_SSL", "Internaldate2tuple", "Int2AP", "ParseFlags", "Time2Internaldate"] # Globals CRLF = '\r\n' Debug = 0 IMAP4_PORT = 143 IMAP4_SSL_PORT = 993 AllowedVersions = ('IMAP4REV1', 'IMAP4') # Most recent first # Commands Commands = { # name valid states 'APPEND': ('AUTH', 'SELECTED'), 'AUTHENTICATE': ('NONAUTH',), 'CAPABILITY': ('NONAUTH', 'AUTH', 'SELECTED', 'LOGOUT'), 'CHECK': ('SELECTED',), 'CLOSE': ('SELECTED',), 'COPY': ('SELECTED',), 'CREATE': ('AUTH', 'SELECTED'), 'DELETE': ('AUTH', 'SELECTED'), 'EXAMINE': ('AUTH', 'SELECTED'), 'EXPUNGE': ('SELECTED',), 'FETCH': ('SELECTED',), 'GETACL': ('AUTH', 'SELECTED'), 'GETQUOTA': ('AUTH', 'SELECTED'), 'GETQUOTAROOT': ('AUTH', 'SELECTED'), 'LIST': ('AUTH', 'SELECTED'), 'LOGIN': ('NONAUTH',), 'LOGOUT': ('NONAUTH', 'AUTH', 'SELECTED', 'LOGOUT'), 'LSUB': ('AUTH', 'SELECTED'), 'NAMESPACE': ('AUTH', 'SELECTED'), 'NOOP': ('NONAUTH', 'AUTH', 'SELECTED', 'LOGOUT'), 'PARTIAL': ('SELECTED',), # NB: obsolete 'RENAME': ('AUTH', 'SELECTED'), 'SEARCH': ('SELECTED',), 'SELECT': ('AUTH', 'SELECTED'), 'SETACL': ('AUTH', 'SELECTED'), 'SETQUOTA': ('AUTH', 'SELECTED'), 'SORT': ('SELECTED',), 'STATUS': ('AUTH', 'SELECTED'), 'STORE': ('SELECTED',), 'SUBSCRIBE': ('AUTH', 'SELECTED'), 'UID': ('SELECTED',), 'UNSUBSCRIBE': ('AUTH', 'SELECTED'), } # Patterns to match server responses Continuation = re.compile(r'\+( (?P.*))?') Flags = re.compile(r'.*FLAGS \((?P[^\)]*)\)') InternalDate = re.compile(r'.*INTERNALDATE "' r'(?P[ 123][0-9])-(?P[A-Z][a-z][a-z])-(?P[0-9][0-9][0-9][0-9])' r' (?P[0-9][0-9]):(?P[0-9][0-9]):(?P[0-9][0-9])' r' (?P[-+])(?P[0-9][0-9])(?P[0-9][0-9])' r'"') Literal = re.compile(r'.*{(?P\d+)}$') Response_code = re.compile(r'\[(?P[A-Z-]+)( (?P[^\]]*))?\]') Untagged_response = re.compile(r'\* (?P[A-Z-]+)( (?P.*))?') Untagged_status = re.compile(r'\* (?P\d+) (?P[A-Z-]+)( (?P.*))?') class IMAP4: """IMAP4 client class. Instantiate with: IMAP4([host[, port]]) host - host's name (default: localhost); port - port number (default: standard IMAP4 port). All IMAP4rev1 commands are supported by methods of the same name (in lower-case). All arguments to commands are converted to strings, except for AUTHENTICATE, and the last argument to APPEND which is passed as an IMAP4 literal. If necessary (the string contains any non-printing characters or white-space and isn't enclosed with either parentheses or double quotes) each string is quoted. However, the 'password' argument to the LOGIN command is always quoted. If you want to avoid having an argument string quoted (eg: the 'flags' argument to STORE) then enclose the string in parentheses (eg: "(\Deleted)"). Each command returns a tuple: (type, [data, ...]) where 'type' is usually 'OK' or 'NO', and 'data' is either the text from the tagged response, or untagged results from command. Errors raise the exception class .error(""). IMAP4 server errors raise .abort(""), which is a sub-class of 'error'. Mailbox status changes from READ-WRITE to READ-ONLY raise the exception class .readonly(""), which is a sub-class of 'abort'. "error" exceptions imply a program error. "abort" exceptions imply the connection should be reset, and the command re-tried. "readonly" exceptions imply the command should be re-tried. Note: to use this module, you must read the RFCs pertaining to the IMAP4 protocol, as the semantics of the arguments to each IMAP4 command are left to the invoker, not to mention the results. """ class error(Exception): pass # Logical errors - debug required class abort(error): pass # Service errors - close and retry class readonly(abort): pass # Mailbox status changed to READ-ONLY mustquote = re.compile(r"[^\w!#$%&'*+,.:;<=>?^`|~-]") def __init__(self, host = '', port = IMAP4_PORT): self.debug = Debug self.state = 'LOGOUT' self.literal = None # A literal argument to a command self.tagged_commands = {} # Tagged commands awaiting response self.untagged_responses = {} # {typ: [data, ...], ...} self.continuation_response = '' # Last continuation response self.is_readonly = None # READ-ONLY desired state self.tagnum = 0 # Open socket to server. self.open(host, port) # Create unique tag for this session, # and compile tagged response matcher. self.tagpre = Int2AP(random.randint(0, 31999)) self.tagre = re.compile(r'(?P' + self.tagpre + r'\d+) (?P[A-Z]+) (?P.*)') # Get server welcome message, # request and store CAPABILITY response. if __debug__: self._cmd_log_len = 10 self._cmd_log_idx = 0 self._cmd_log = {} # Last `_cmd_log_len' interactions if self.debug >= 1: self._mesg('imaplib version %s' % __version__) self._mesg('new IMAP4 connection, tag=%s' % self.tagpre) self.welcome = self._get_response() if 'PREAUTH' in self.untagged_responses: self.state = 'AUTH' elif 'OK' in self.untagged_responses: self.state = 'NONAUTH' else: raise self.error(self.welcome) cap = 'CAPABILITY' self._simple_command(cap) if not cap in self.untagged_responses: raise self.error('no CAPABILITY response from server') self.capabilities = tuple(self.untagged_responses[cap][-1].upper().split()) if __debug__: if self.debug >= 3: self._mesg('CAPABILITIES: %s' % `self.capabilities`) for version in AllowedVersions: if not version in self.capabilities: continue self.PROTOCOL_VERSION = version return raise self.error('server not IMAP4 compliant') def __getattr__(self, attr): # Allow UPPERCASE variants of IMAP4 command methods. if attr in Commands: return getattr(self, attr.lower()) raise AttributeError("Unknown IMAP4 command: '%s'" % attr) # Overridable methods def open(self, host = '', port = IMAP4_PORT): """Setup connection to remote server on "host:port" (default: localhost:standard IMAP4 port). This connection will be used by the routines: read, readline, send, shutdown. """ self.host = host self.port = port self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.sock.connect((host, port)) self.file = self.sock.makefile('rb') def read(self, size): """Read 'size' bytes from remote.""" return self.file.read(size) def readline(self): """Read line from remote.""" return self.file.readline() def send(self, data): """Send data to remote.""" self.sock.sendall(data) def shutdown(self): """Close I/O established in "open".""" self.file.close() self.sock.close() def socket(self): """Return socket instance used to connect to IMAP4 server. socket = .socket() """ return self.sock # Utility methods def recent(self): """Return most recent 'RECENT' responses if any exist, else prompt server for an update using the 'NOOP' command. (typ, [data]) = .recent() 'data' is None if no new messages, else list of RECENT responses, most recent last. """ name = 'RECENT' typ, dat = self._untagged_response('OK', [None], name) if dat[-1]: return typ, dat typ, dat = self.noop() # Prod server for response return self._untagged_response(typ, dat, name) def response(self, code): """Return data for response 'code' if received, or None. Old value for response 'code' is cleared. (code, [data]) = .response(code) """ return self._untagged_response(code, [None], code.upper()) # IMAP4 commands def append(self, mailbox, flags, date_time, message): """Append message to named mailbox. (typ, [data]) = .append(mailbox, flags, date_time, message) All args except `message' can be None. """ name = 'APPEND' if not mailbox: mailbox = 'INBOX' if flags: if (flags[0],flags[-1]) != ('(',')'): flags = '(%s)' % flags else: flags = None if date_time: date_time = Time2Internaldate(date_time) else: date_time = None self.literal = message return self._simple_command(name, mailbox, flags, date_time) def authenticate(self, mechanism, authobject): """Authenticate command - requires response processing. 'mechanism' specifies which authentication mechanism is to be used - it must appear in .capabilities in the form AUTH=. 'authobject' must be a callable object: data = authobject(response) It will be called to process server continuation responses. It should return data that will be encoded and sent to server. It should return None if the client abort response '*' should be sent instead. """ mech = mechanism.upper() cap = 'AUTH=%s' % mech if not cap in self.capabilities: raise self.error("Server doesn't allow %s authentication." % mech) self.literal = _Authenticator(authobject).process typ, dat = self._simple_command('AUTHENTICATE', mech) if typ != 'OK': raise self.error(dat[-1]) self.state = 'AUTH' return typ, dat def check(self): """Checkpoint mailbox on server. (typ, [data]) = .check() """ return self._simple_command('CHECK') def close(self): """Close currently selected mailbox. Deleted messages are removed from writable mailbox. This is the recommended command before 'LOGOUT'. (typ, [data]) = .close() """ try: typ, dat = self._simple_command('CLOSE') finally: self.state = 'AUTH' return typ, dat def copy(self, message_set, new_mailbox): """Copy 'message_set' messages onto end of 'new_mailbox'. (typ, [data]) = .copy(message_set, new_mailbox) """ return self._simple_command('COPY', message_set, new_mailbox) def create(self, mailbox): """Create new mailbox. (typ, [data]) = .create(mailbox) """ return self._simple_command('CREATE', mailbox) def delete(self, mailbox): """Delete old mailbox. (typ, [data]) = .delete(mailbox) """ return self._simple_command('DELETE', mailbox) def expunge(self): """Permanently remove deleted items from selected mailbox. Generates 'EXPUNGE' response for each deleted message. (typ, [data]) = .expunge() 'data' is list of 'EXPUNGE'd message numbers in order received. """ name = 'EXPUNGE' typ, dat = self._simple_command(name) return self._untagged_response(typ, dat, name) def fetch(self, message_set, message_parts): """Fetch (parts of) messages. (typ, [data, ...]) = .fetch(message_set, message_parts) 'message_parts' should be a string of selected parts enclosed in parentheses, eg: "(UID BODY[TEXT])". 'data' are tuples of message part envelope and data. """ name = 'FETCH' typ, dat = self._simple_command(name, message_set, message_parts) return self._untagged_response(typ, dat, name) def getacl(self, mailbox): """Get the ACLs for a mailbox. (typ, [data]) = .getacl(mailbox) """ typ, dat = self._simple_command('GETACL', mailbox) return self._untagged_response(typ, dat, 'ACL') def getquota(self, root): """Get the quota root's resource usage and limits. Part of the IMAP4 QUOTA extension defined in rfc2087. (typ, [data]) = .getquota(root) """ typ, dat = self._simple_command('GETQUOTA', root) return self._untagged_response(typ, dat, 'QUOTA') def getquotaroot(self, mailbox): """Get the list of quota roots for the named mailbox. (typ, [[QUOTAROOT responses...], [QUOTA responses]]) = .getquotaroot(mailbox) """ typ, dat = self._simple_command('GETQUOTA', root) typ, quota = self._untagged_response(typ, dat, 'QUOTA') typ, quotaroot = self._untagged_response(typ, dat, 'QUOTAROOT') return typ, [quotaroot, quota] def list(self, directory='""', pattern='*'): """List mailbox names in directory matching pattern. (typ, [data]) = .list(directory='""', pattern='*') 'data' is list of LIST responses. """ name = 'LIST' typ, dat = self._simple_command(name, directory, pattern) return self._untagged_response(typ, dat, name) def login(self, user, password): """Identify client using plaintext password. (typ, [data]) = .login(user, password) NB: 'password' will be quoted. """ #if not 'AUTH=LOGIN' in self.capabilities: # raise self.error("Server doesn't allow LOGIN authentication." % mech) typ, dat = self._simple_command('LOGIN', user, self._quote(password)) if typ != 'OK': raise self.error(dat[-1]) self.state = 'AUTH' return typ, dat def logout(self): """Shutdown connection to server. (typ, [data]) = .logout() Returns server 'BYE' response. """ self.state = 'LOGOUT' try: typ, dat = self._simple_command('LOGOUT') except: typ, dat = 'NO', ['%s: %s' % sys.exc_info()[:2]] self.shutdown() if 'BYE' in self.untagged_responses: return 'BYE', self.untagged_responses['BYE'] return typ, dat def lsub(self, directory='""', pattern='*'): """List 'subscribed' mailbox names in directory matching pattern. (typ, [data, ...]) = .lsub(directory='""', pattern='*') 'data' are tuples of message part envelope and data. """ name = 'LSUB' typ, dat = self._simple_command(name, directory, pattern) return self._untagged_response(typ, dat, name) def namespace(self): """ Returns IMAP namespaces ala rfc2342 (typ, [data, ...]) = .namespace() """ name = 'NAMESPACE' typ, dat = self._simple_command(name) return self._untagged_response(typ, dat, name) def noop(self): """Send NOOP command. (typ, data) = .noop() """ if __debug__: if self.debug >= 3: self._dump_ur(self.untagged_responses) return self._simple_command('NOOP') def partial(self, message_num, message_part, start, length): """Fetch truncated part of a message. (typ, [data, ...]) = .partial(message_num, message_part, start, length) 'data' is tuple of message part envelope and data. """ name = 'PARTIAL' typ, dat = self._simple_command(name, message_num, message_part, start, length) return self._untagged_response(typ, dat, 'FETCH') def rename(self, oldmailbox, newmailbox): """Rename old mailbox name to new. (typ, data) = .rename(oldmailbox, newmailbox) """ return self._simple_command('RENAME', oldmailbox, newmailbox) def search(self, charset, *criteria): """Search mailbox for matching messages. (typ, [data]) = .search(charset, criterium, ...) 'data' is space separated list of matching message numbers. """ name = 'SEARCH' if charset: typ, dat = apply(self._simple_command, (name, 'CHARSET', charset) + criteria) else: typ, dat = apply(self._simple_command, (name,) + criteria) return self._untagged_response(typ, dat, name) def select(self, mailbox='INBOX', readonly=None): """Select a mailbox. Flush all untagged responses. (typ, [data]) = .select(mailbox='INBOX', readonly=None) 'data' is count of messages in mailbox ('EXISTS' response). """ # Mandated responses are ('FLAGS', 'EXISTS', 'RECENT', 'UIDVALIDITY') self.untagged_responses = {} # Flush old responses. self.is_readonly = readonly if readonly is not None: name = 'EXAMINE' else: name = 'SELECT' typ, dat = self._simple_command(name, mailbox) if typ != 'OK': self.state = 'AUTH' # Might have been 'SELECTED' return typ, dat self.state = 'SELECTED' if 'READ-ONLY' in self.untagged_responses \ and not readonly: if __debug__: if self.debug >= 1: self._dump_ur(self.untagged_responses) raise self.readonly('%s is not writable' % mailbox) return typ, self.untagged_responses.get('EXISTS', [None]) def setacl(self, mailbox, who, what): """Set a mailbox acl. (typ, [data]) = .create(mailbox, who, what) """ return self._simple_command('SETACL', mailbox, who, what) def setquota(self, root, limits): """Set the quota root's resource limits. (typ, [data]) = .setquota(root, limits) """ typ, dat = self._simple_command('SETQUOTA', root, limits) return self._untagged_response(typ, dat, 'QUOTA') def sort(self, sort_criteria, charset, *search_criteria): """IMAP4rev1 extension SORT command. (typ, [data]) = .sort(sort_criteria, charset, search_criteria, ...) """ name = 'SORT' #if not name in self.capabilities: # Let the server decide! # raise self.error('unimplemented extension command: %s' % name) if (sort_criteria[0],sort_criteria[-1]) != ('(',')'): sort_criteria = '(%s)' % sort_criteria typ, dat = apply(self._simple_command, (name, sort_criteria, charset) + search_criteria) return self._untagged_response(typ, dat, name) def status(self, mailbox, names): """Request named status conditions for mailbox. (typ, [data]) = .status(mailbox, names) """ name = 'STATUS' #if self.PROTOCOL_VERSION == 'IMAP4': # Let the server decide! # raise self.error('%s unimplemented in IMAP4 (obtain IMAP4rev1 server, or re-code)' % name) typ, dat = self._simple_command(name, mailbox, names) return self._untagged_response(typ, dat, name) def store(self, message_set, command, flags): """Alters flag dispositions for messages in mailbox. (typ, [data]) = .store(message_set, command, flags) """ if (flags[0],flags[-1]) != ('(',')'): flags = '(%s)' % flags # Avoid quoting the flags typ, dat = self._simple_command('STORE', message_set, command, flags) return self._untagged_response(typ, dat, 'FETCH') def subscribe(self, mailbox): """Subscribe to new mailbox. (typ, [data]) = .subscribe(mailbox) """ return self._simple_command('SUBSCRIBE', mailbox) def uid(self, command, *args): """Execute "command arg ..." with messages identified by UID, rather than message number. (typ, [data]) = .uid(command, arg1, arg2, ...) Returns response appropriate to 'command'. """ command = command.upper() if not command in Commands: raise self.error("Unknown IMAP4 UID command: %s" % command) if self.state not in Commands[command]: raise self.error('command %s illegal in state %s' % (command, self.state)) name = 'UID' typ, dat = apply(self._simple_command, (name, command) + args) if command in ('SEARCH', 'SORT'): name = command else: name = 'FETCH' return self._untagged_response(typ, dat, name) def unsubscribe(self, mailbox): """Unsubscribe from old mailbox. (typ, [data]) = .unsubscribe(mailbox) """ return self._simple_command('UNSUBSCRIBE', mailbox) def xatom(self, name, *args): """Allow simple extension commands notified by server in CAPABILITY response. Assumes command is legal in current state. (typ, [data]) = .xatom(name, arg, ...) Returns response appropriate to extension command `name'. """ name = name.upper() #if not name in self.capabilities: # Let the server decide! # raise self.error('unknown extension command: %s' % name) if not name in Commands: Commands[name] = (self.state,) return apply(self._simple_command, (name,) + args) # Private methods def _append_untagged(self, typ, dat): if dat is None: dat = '' ur = self.untagged_responses if __debug__: if self.debug >= 5: self._mesg('untagged_responses[%s] %s += ["%s"]' % (typ, len(ur.get(typ,'')), dat)) if typ in ur: ur[typ].append(dat) else: ur[typ] = [dat] def _check_bye(self): bye = self.untagged_responses.get('BYE') if bye: raise self.abort(bye[-1]) def _command(self, name, *args): if self.state not in Commands[name]: self.literal = None raise self.error( 'command %s illegal in state %s' % (name, self.state)) for typ in ('OK', 'NO', 'BAD'): if typ in self.untagged_responses: del self.untagged_responses[typ] if 'READ-ONLY' in self.untagged_responses \ and not self.is_readonly: raise self.readonly('mailbox status changed to READ-ONLY') tag = self._new_tag() data = '%s %s' % (tag, name) for arg in args: if arg is None: continue data = '%s %s' % (data, self._checkquote(arg)) literal = self.literal if literal is not None: self.literal = None if type(literal) is type(self._command): literator = literal else: literator = None data = '%s {%s}' % (data, len(literal)) if __debug__: if self.debug >= 4: self._mesg('> %s' % data) else: self._log('> %s' % data) try: self.send('%s%s' % (data, CRLF)) except (socket.error, OSError), val: raise self.abort('socket error: %s' % val) if literal is None: return tag while 1: # Wait for continuation response while self._get_response(): if self.tagged_commands[tag]: # BAD/NO? return tag # Send literal if literator: literal = literator(self.continuation_response) if __debug__: if self.debug >= 4: self._mesg('write literal size %s' % len(literal)) try: self.send(literal) self.send(CRLF) except (socket.error, OSError), val: raise self.abort('socket error: %s' % val) if not literator: break return tag def _command_complete(self, name, tag): self._check_bye() try: typ, data = self._get_tagged_response(tag) except self.abort, val: raise self.abort('command: %s => %s' % (name, val)) except self.error, val: raise self.error('command: %s => %s' % (name, val)) self._check_bye() if typ == 'BAD': raise self.error('%s command error: %s %s' % (name, typ, data)) return typ, data def _get_response(self): # Read response and store. # # Returns None for continuation responses, # otherwise first response line received. resp = self._get_line() # Command completion response? if self._match(self.tagre, resp): tag = self.mo.group('tag') if not tag in self.tagged_commands: raise self.abort('unexpected tagged response: %s' % resp) typ = self.mo.group('type') dat = self.mo.group('data') self.tagged_commands[tag] = (typ, [dat]) else: dat2 = None # '*' (untagged) responses? if not self._match(Untagged_response, resp): if self._match(Untagged_status, resp): dat2 = self.mo.group('data2') if self.mo is None: # Only other possibility is '+' (continuation) response... if self._match(Continuation, resp): self.continuation_response = self.mo.group('data') return None # NB: indicates continuation raise self.abort("unexpected response: '%s'" % resp) typ = self.mo.group('type') dat = self.mo.group('data') if dat is None: dat = '' # Null untagged response if dat2: dat = dat + ' ' + dat2 # Is there a literal to come? while self._match(Literal, dat): # Read literal direct from connection. size = int(self.mo.group('size')) if __debug__: if self.debug >= 4: self._mesg('read literal size %s' % size) data = self.read(size) # Store response with literal as tuple self._append_untagged(typ, (dat, data)) # Read trailer - possibly containing another literal dat = self._get_line() self._append_untagged(typ, dat) # Bracketed response information? if typ in ('OK', 'NO', 'BAD') and self._match(Response_code, dat): self._append_untagged(self.mo.group('type'), self.mo.group('data')) if __debug__: if self.debug >= 1 and typ in ('NO', 'BAD', 'BYE'): self._mesg('%s response: %s' % (typ, dat)) return resp def _get_tagged_response(self, tag): while 1: result = self.tagged_commands[tag] if result is not None: del self.tagged_commands[tag] return result # Some have reported "unexpected response" exceptions. # Note that ignoring them here causes loops. # Instead, send me details of the unexpected response and # I'll update the code in `_get_response()'. try: self._get_response() except self.abort, val: if __debug__: if self.debug >= 1: self.print_log() raise def _get_line(self): line = self.readline() if not line: raise self.abort('socket error: EOF') # Protocol mandates all lines terminated by CRLF line = line[:-2] if __debug__: if self.debug >= 4: self._mesg('< %s' % line) else: self._log('< %s' % line) return line def _match(self, cre, s): # Run compiled regular expression match method on 's'. # Save result, return success. self.mo = cre.match(s) if __debug__: if self.mo is not None and self.debug >= 5: self._mesg("\tmatched r'%s' => %s" % (cre.pattern, `self.mo.groups()`)) return self.mo is not None def _new_tag(self): tag = '%s%s' % (self.tagpre, self.tagnum) self.tagnum = self.tagnum + 1 self.tagged_commands[tag] = None return tag def _checkquote(self, arg): # Must quote command args if non-alphanumeric chars present, # and not already quoted. if type(arg) is not type(''): return arg if (arg[0],arg[-1]) in (('(',')'),('"','"')): return arg if self.mustquote.search(arg) is None: return arg return self._quote(arg) def _quote(self, arg): arg = arg.replace('\\', '\\\\') arg = arg.replace('"', '\\"') return '"%s"' % arg def _simple_command(self, name, *args): return self._command_complete(name, apply(self._command, (name,) + args)) def _untagged_response(self, typ, dat, name): if typ == 'NO': return typ, dat if not name in self.untagged_responses: return typ, [None] data = self.untagged_responses.pop(name) if __debug__: if self.debug >= 5: self._mesg('untagged_responses[%s] => %s' % (name, data)) return typ, data if __debug__: def _mesg(self, s, secs=None): if secs is None: secs = time.time() tm = time.strftime('%M:%S', time.localtime(secs)) sys.stderr.write(' %s.%02d %s\n' % (tm, (secs*100)%100, s)) sys.stderr.flush() def _dump_ur(self, dict): # Dump untagged responses (in `dict'). l = dict.items() if not l: return t = '\n\t\t' l = map(lambda x:'%s: "%s"' % (x[0], x[1][0] and '" "'.join(x[1]) or ''), l) self._mesg('untagged responses dump:%s%s' % (t, t.join(l))) def _log(self, line): # Keep log of last `_cmd_log_len' interactions for debugging. self._cmd_log[self._cmd_log_idx] = (line, time.time()) self._cmd_log_idx += 1 if self._cmd_log_idx >= self._cmd_log_len: self._cmd_log_idx = 0 def print_log(self): self._mesg('last %d IMAP4 interactions:' % len(self._cmd_log)) i, n = self._cmd_log_idx, self._cmd_log_len while n: try: apply(self._mesg, self._cmd_log[i]) except: pass i += 1 if i >= self._cmd_log_len: i = 0 n -= 1 class IMAP4_SSL(IMAP4): """IMAP4 client class over SSL connection Instantiate with: IMAP4_SSL([host[, port[, keyfile[, certfile]]]]) host - host's name (default: localhost); port - port number (default: standard IMAP4 SSL port). keyfile - PEM formatted file that contains your private key (default: None); certfile - PEM formatted certificate chain file (default: None); for more documentation see the docstring of the parent class IMAP4. """ def __init__(self, host = '', port = IMAP4_SSL_PORT, keyfile = None, certfile = None): self.keyfile = keyfile self.certfile = certfile IMAP4.__init__(self, host, port) def open(self, host = '', port = IMAP4_SSL_PORT): """Setup connection to remote server on "host:port". (default: localhost:standard IMAP4 SSL port). This connection will be used by the routines: read, readline, send, shutdown. """ self.host = host self.port = port self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.sock.connect((host, port)) self.sslobj = socket.ssl(self.sock, self.keyfile, self.certfile) def read(self, size): """Read 'size' bytes from remote.""" # sslobj.read() sometimes returns < size bytes data = self.sslobj.read(size) while len(data) < size: data += self.sslobj.read(size-len(data)) return data def readline(self): """Read line from remote.""" # NB: socket.ssl needs a "readline" method, or perhaps a "makefile" method. line = "" while 1: char = self.sslobj.read(1) line += char if char == "\n": return line def send(self, data): """Send data to remote.""" # NB: socket.ssl needs a "sendall" method to match socket objects. bytes = len(data) while bytes > 0: sent = self.sslobj.write(data) if sent == bytes: break # avoid copy data = data[sent:] bytes = bytes - sent def shutdown(self): """Close I/O established in "open".""" self.sock.close() def socket(self): """Return socket instance used to connect to IMAP4 server. socket = .socket() """ return self.sock def ssl(self): """Return SSLObject instance used to communicate with the IMAP4 server. ssl = .socket.ssl() """ return self.sslobj class _Authenticator: """Private class to provide en/decoding for base64-based authentication conversation. """ def __init__(self, mechinst): self.mech = mechinst # Callable object to provide/process data def process(self, data): ret = self.mech(self.decode(data)) if ret is None: return '*' # Abort conversation return self.encode(ret) def encode(self, inp): # # Invoke binascii.b2a_base64 iteratively with # short even length buffers, strip the trailing # line feed from the result and append. "Even" # means a number that factors to both 6 and 8, # so when it gets to the end of the 8-bit input # there's no partial 6-bit output. # oup = '' while inp: if len(inp) > 48: t = inp[:48] inp = inp[48:] else: t = inp inp = '' e = binascii.b2a_base64(t) if e: oup = oup + e[:-1] return oup def decode(self, inp): if not inp: return '' return binascii.a2b_base64(inp) Mon2num = {'Jan': 1, 'Feb': 2, 'Mar': 3, 'Apr': 4, 'May': 5, 'Jun': 6, 'Jul': 7, 'Aug': 8, 'Sep': 9, 'Oct': 10, 'Nov': 11, 'Dec': 12} def Internaldate2tuple(resp): """Convert IMAP4 INTERNALDATE to UT. Returns Python time module tuple. """ mo = InternalDate.match(resp) if not mo: return None mon = Mon2num[mo.group('mon')] zonen = mo.group('zonen') day = int(mo.group('day')) year = int(mo.group('year')) hour = int(mo.group('hour')) min = int(mo.group('min')) sec = int(mo.group('sec')) zoneh = int(mo.group('zoneh')) zonem = int(mo.group('zonem')) # INTERNALDATE timezone must be subtracted to get UT zone = (zoneh*60 + zonem)*60 if zonen == '-': zone = -zone tt = (year, mon, day, hour, min, sec, -1, -1, -1) utc = time.mktime(tt) # Following is necessary because the time module has no 'mkgmtime'. # 'mktime' assumes arg in local timezone, so adds timezone/altzone. lt = time.localtime(utc) if time.daylight and lt[-1]: zone = zone + time.altzone else: zone = zone + time.timezone return time.localtime(utc - zone) def Int2AP(num): """Convert integer to A-P string representation.""" val = ''; AP = 'ABCDEFGHIJKLMNOP' num = int(abs(num)) while num: num, mod = divmod(num, 16) val = AP[mod] + val return val def ParseFlags(resp): """Convert IMAP4 flags response to python tuple.""" mo = Flags.match(resp) if not mo: return () return tuple(mo.group('flags').split()) def Time2Internaldate(date_time): """Convert 'date_time' to IMAP4 INTERNALDATE representation. Return string in form: '"DD-Mmm-YYYY HH:MM:SS +HHMM"' """ if isinstance(date_time, (int, float)): tt = time.localtime(date_time) elif isinstance(date_time, (tuple, time.struct_time)): tt = date_time elif isinstance(date_time, str) and (date_time[0],date_time[-1]) == ('"','"'): return date_time # Assume in correct format else: raise ValueError("date_time not of a known type") dt = time.strftime("%d-%b-%Y %H:%M:%S", tt) if dt[0] == '0': dt = ' ' + dt[1:] if time.daylight and tt[-1]: zone = -time.altzone else: zone = -time.timezone return '"' + dt + " %+03d%02d" % divmod(zone/60, 60) + '"' if __name__ == '__main__': import getopt, getpass try: optlist, args = getopt.getopt(sys.argv[1:], 'd:') except getopt.error, val: pass for opt,val in optlist: if opt == '-d': Debug = int(val) if not args: args = ('',) host = args[0] USER = getpass.getuser() PASSWD = getpass.getpass("IMAP password for %s on %s: " % (USER, host or "localhost")) test_mesg = 'From: %(user)s@localhost%(lf)sSubject: IMAP4 test%(lf)s%(lf)sdata...%(lf)s' % {'user':USER, 'lf':CRLF} test_seq1 = ( ('login', (USER, PASSWD)), ('create', ('/tmp/xxx 1',)), ('rename', ('/tmp/xxx 1', '/tmp/yyy')), ('CREATE', ('/tmp/yyz 2',)), ('append', ('/tmp/yyz 2', None, None, test_mesg)), ('list', ('/tmp', 'yy*')), ('select', ('/tmp/yyz 2',)), ('search', (None, 'SUBJECT', 'test')), ('fetch', ('1', '(FLAGS INTERNALDATE RFC822)')), ('store', ('1', 'FLAGS', '(\Deleted)')), ('namespace', ()), ('expunge', ()), ('recent', ()), ('close', ()), ) test_seq2 = ( ('select', ()), ('response',('UIDVALIDITY',)), ('uid', ('SEARCH', 'ALL')), ('response', ('EXISTS',)), ('append', (None, None, None, test_mesg)), ('recent', ()), ('logout', ()), ) def run(cmd, args): M._mesg('%s %s' % (cmd, args)) typ, dat = apply(getattr(M, cmd), args) M._mesg('%s => %s %s' % (cmd, typ, dat)) return dat try: M = IMAP4(host) M._mesg('PROTOCOL_VERSION = %s' % M.PROTOCOL_VERSION) M._mesg('CAPABILITIES = %s' % `M.capabilities`) for cmd,args in test_seq1: run(cmd, args) for ml in run('list', ('/tmp/', 'yy%')): mo = re.match(r'.*"([^"]+)"$', ml) if mo: path = mo.group(1) else: path = ml.split()[-1] run('delete', (path,)) for cmd,args in test_seq2: dat = run(cmd, args) if (cmd,args) != ('uid', ('SEARCH', 'ALL')): continue uid = dat[-1].split() if not uid: continue run('uid', ('FETCH', '%s' % uid[-1], '(FLAGS INTERNALDATE RFC822.SIZE RFC822.HEADER RFC822.TEXT)')) print '\nAll tests OK.' except: print '\nTests failed.' if not Debug: print ''' If you would like to see debugging output, try: %s -d5 ''' % sys.argv[0] raise