cpython/Lib/imaplib.py

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"""IMAP4 client.
Based on RFC 2060.
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Public class: IMAP4
Public variable: Debug
Public functions: Internaldate2tuple
Int2AP
ParseFlags
Time2Internaldate
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"""
# Author: Piers Lauder <piers@cs.su.oz.au> December 1997.
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#
# Authentication code contributed by Donn Cave <donn@u.washington.edu> June 1998.
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# String method conversion by ESR, February 2001.
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# GET/SETACL contributed by Anthony Baxter <anthony@interlink.com.au> April 2001.
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# IMAP4_SSL contributed by Tino Lange <Tino.Lange@isg.de> March 2002.
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__version__ = "2.51"
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import binascii, re, socket, time, random, sys
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__all__ = ["IMAP4", "Internaldate2tuple",
"Int2AP", "ParseFlags", "Time2Internaldate"]
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# Globals
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CRLF = '\r\n'
Debug = 0
IMAP4_PORT = 143
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IMAP4_SSL_PORT = 993
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AllowedVersions = ('IMAP4REV1', 'IMAP4') # Most recent first
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# Commands
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Commands = {
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# 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',),
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'GETACL': ('AUTH', 'SELECTED'),
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'LIST': ('AUTH', 'SELECTED'),
'LOGIN': ('NONAUTH',),
'LOGOUT': ('NONAUTH', 'AUTH', 'SELECTED', 'LOGOUT'),
'LSUB': ('AUTH', 'SELECTED'),
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'NAMESPACE': ('AUTH', 'SELECTED'),
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'NOOP': ('NONAUTH', 'AUTH', 'SELECTED', 'LOGOUT'),
'PARTIAL': ('SELECTED',), # NB: obsolete
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'RENAME': ('AUTH', 'SELECTED'),
'SEARCH': ('SELECTED',),
'SELECT': ('AUTH', 'SELECTED'),
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'SETACL': ('AUTH', 'SELECTED'),
'SORT': ('SELECTED',),
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'STATUS': ('AUTH', 'SELECTED'),
'STORE': ('SELECTED',),
'SUBSCRIBE': ('AUTH', 'SELECTED'),
'UID': ('SELECTED',),
'UNSUBSCRIBE': ('AUTH', 'SELECTED'),
}
# Patterns to match server responses
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Continuation = re.compile(r'\+( (?P<data>.*))?')
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Flags = re.compile(r'.*FLAGS \((?P<flags>[^\)]*)\)')
InternalDate = re.compile(r'.*INTERNALDATE "'
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r'(?P<day>[ 123][0-9])-(?P<mon>[A-Z][a-z][a-z])-(?P<year>[0-9][0-9][0-9][0-9])'
r' (?P<hour>[0-9][0-9]):(?P<min>[0-9][0-9]):(?P<sec>[0-9][0-9])'
r' (?P<zonen>[-+])(?P<zoneh>[0-9][0-9])(?P<zonem>[0-9][0-9])'
r'"')
Literal = re.compile(r'.*{(?P<size>\d+)}$')
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Response_code = re.compile(r'\[(?P<type>[A-Z-]+)( (?P<data>[^\]]*))?\]')
Untagged_response = re.compile(r'\* (?P<type>[A-Z-]+)( (?P<data>.*))?')
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Untagged_status = re.compile(r'\* (?P<data>\d+) (?P<type>[A-Z-]+)( (?P<data2>.*))?')
class IMAP4:
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"""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)").
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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.
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Errors raise the exception class <instance>.error("<reason>").
IMAP4 server errors raise <instance>.abort("<reason>"),
which is a sub-class of 'error'. Mailbox status changes
from READ-WRITE to READ-ONLY raise the exception class
<instance>.readonly("<reason>"), which is a sub-class of 'abort'.
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"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.
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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.
"""
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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
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mustquote = re.compile(r"[^\w!#$%&'*+,.:;<=>?^`|~-]")
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def __init__(self, host = '', port = IMAP4_PORT):
self.host = host
self.port = 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
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# Open socket to server.
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self.open(host, port)
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# Create unique tag for this session,
# and compile tagged response matcher.
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self.tagpre = Int2AP(random.randint(0, 31999))
self.tagre = re.compile(r'(?P<tag>'
+ self.tagpre
+ r'\d+) (?P<type>[A-Z]+) (?P<data>.*)')
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# Get server welcome message,
# request and store CAPABILITY response.
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if __debug__:
self._cmd_log_len = 10
self._cmd_log_idx = 0
self._cmd_log = {} # Last `_cmd_log_len' interactions
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if self.debug >= 1:
self._mesg('imaplib version %s' % __version__)
self._mesg('new IMAP4 connection, tag=%s' % self.tagpre)
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self.welcome = self._get_response()
if self.untagged_responses.has_key('PREAUTH'):
self.state = 'AUTH'
elif self.untagged_responses.has_key('OK'):
self.state = 'NONAUTH'
else:
raise self.error(self.welcome)
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cap = 'CAPABILITY'
self._simple_command(cap)
if not self.untagged_responses.has_key(cap):
raise self.error('no CAPABILITY response from server')
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self.capabilities = tuple(self.untagged_responses[cap][-1].upper().split())
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if __debug__:
if self.debug >= 3:
self._mesg('CAPABILITIES: %s' % `self.capabilities`)
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for version in AllowedVersions:
if not version in self.capabilities:
continue
self.PROTOCOL_VERSION = version
return
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raise self.error('server not IMAP4 compliant')
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def __getattr__(self, attr):
# Allow UPPERCASE variants of IMAP4 command methods.
if Commands.has_key(attr):
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return getattr(self, attr.lower())
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raise AttributeError("Unknown IMAP4 command: '%s'" % attr)
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# Overridable methods
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def open(self, host, port):
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"""Setup connection to remote server on "host:port".
This connection will be used by the routines:
read, readline, send, shutdown.
"""
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.connect((self.host, self.port))
self.file = self.sock.makefile('rb')
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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)
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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 = <instance>.socket()
"""
return self.sock
# Utility methods
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def recent(self):
"""Return most recent 'RECENT' responses if any exist,
else prompt server for an update using the 'NOOP' command.
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(typ, [data]) = <instance>.recent()
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'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)
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def response(self, code):
"""Return data for response 'code' if received, or None.
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Old value for response 'code' is cleared.
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(code, [data]) = <instance>.response(code)
"""
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return self._untagged_response(code, [None], code.upper())
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# IMAP4 commands
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def append(self, mailbox, flags, date_time, message):
"""Append message to named mailbox.
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(typ, [data]) = <instance>.append(mailbox, flags, date_time, message)
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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)
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def authenticate(self, mechanism, authobject):
"""Authenticate command - requires response processing.
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'mechanism' specifies which authentication mechanism is to
be used - it must appear in <instance>.capabilities in the
form AUTH=<mechanism>.
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'authobject' must be a callable object:
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data = authobject(response)
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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.
"""
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mech = mechanism.upper()
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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
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def check(self):
"""Checkpoint mailbox on server.
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(typ, [data]) = <instance>.check()
"""
return self._simple_command('CHECK')
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def close(self):
"""Close currently selected mailbox.
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Deleted messages are removed from writable mailbox.
This is the recommended command before 'LOGOUT'.
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(typ, [data]) = <instance>.close()
"""
try:
typ, dat = self._simple_command('CLOSE')
finally:
self.state = 'AUTH'
return typ, dat
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def copy(self, message_set, new_mailbox):
"""Copy 'message_set' messages onto end of 'new_mailbox'.
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(typ, [data]) = <instance>.copy(message_set, new_mailbox)
"""
return self._simple_command('COPY', message_set, new_mailbox)
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def create(self, mailbox):
"""Create new mailbox.
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(typ, [data]) = <instance>.create(mailbox)
"""
return self._simple_command('CREATE', mailbox)
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def delete(self, mailbox):
"""Delete old mailbox.
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(typ, [data]) = <instance>.delete(mailbox)
"""
return self._simple_command('DELETE', mailbox)
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def expunge(self):
"""Permanently remove deleted items from selected mailbox.
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Generates 'EXPUNGE' response for each deleted message.
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(typ, [data]) = <instance>.expunge()
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'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)
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def fetch(self, message_set, message_parts):
"""Fetch (parts of) messages.
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(typ, [data, ...]) = <instance>.fetch(message_set, message_parts)
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'message_parts' should be a string of selected parts
enclosed in parentheses, eg: "(UID BODY[TEXT])".
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'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)
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def getacl(self, mailbox):
"""Get the ACLs for a mailbox.
(typ, [data]) = <instance>.getacl(mailbox)
"""
typ, dat = self._simple_command('GETACL', mailbox)
return self._untagged_response(typ, dat, 'ACL')
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def list(self, directory='""', pattern='*'):
"""List mailbox names in directory matching pattern.
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(typ, [data]) = <instance>.list(directory='""', pattern='*')
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'data' is list of LIST responses.
"""
name = 'LIST'
typ, dat = self._simple_command(name, directory, pattern)
return self._untagged_response(typ, dat, name)
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def login(self, user, password):
"""Identify client using plaintext password.
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(typ, [data]) = <instance>.login(user, password)
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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
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def logout(self):
"""Shutdown connection to server.
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(typ, [data]) = <instance>.logout()
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Returns server 'BYE' response.
"""
self.state = 'LOGOUT'
try: typ, dat = self._simple_command('LOGOUT')
except: typ, dat = 'NO', ['%s: %s' % sys.exc_info()[:2]]
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self.shutdown()
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if self.untagged_responses.has_key('BYE'):
return 'BYE', self.untagged_responses['BYE']
return typ, dat
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def lsub(self, directory='""', pattern='*'):
"""List 'subscribed' mailbox names in directory matching pattern.
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(typ, [data, ...]) = <instance>.lsub(directory='""', pattern='*')
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'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)
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def namespace(self):
""" Returns IMAP namespaces ala rfc2342
(typ, [data, ...]) = <instance>.namespace()
"""
name = 'NAMESPACE'
typ, dat = self._simple_command(name)
return self._untagged_response(typ, dat, name)
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def noop(self):
"""Send NOOP command.
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(typ, data) = <instance>.noop()
"""
if __debug__:
if self.debug >= 3:
self._dump_ur(self.untagged_responses)
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return self._simple_command('NOOP')
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def partial(self, message_num, message_part, start, length):
"""Fetch truncated part of a message.
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(typ, [data, ...]) = <instance>.partial(message_num, message_part, start, length)
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'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')
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def rename(self, oldmailbox, newmailbox):
"""Rename old mailbox name to new.
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(typ, data) = <instance>.rename(oldmailbox, newmailbox)
"""
return self._simple_command('RENAME', oldmailbox, newmailbox)
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def search(self, charset, *criteria):
"""Search mailbox for matching messages.
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(typ, [data]) = <instance>.search(charset, criterium, ...)
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'data' is space separated list of matching message numbers.
"""
name = 'SEARCH'
if charset:
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typ, dat = apply(self._simple_command, (name, 'CHARSET', charset) + criteria)
else:
typ, dat = apply(self._simple_command, (name,) + criteria)
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return self._untagged_response(typ, dat, name)
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def select(self, mailbox='INBOX', readonly=None):
"""Select a mailbox.
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Flush all untagged responses.
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(typ, [data]) = <instance>.select(mailbox='INBOX', readonly=None)
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'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:
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 self.untagged_responses.has_key('READ-ONLY') \
and not readonly:
if __debug__:
if self.debug >= 1:
self._dump_ur(self.untagged_responses)
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raise self.readonly('%s is not writable' % mailbox)
return typ, self.untagged_responses.get('EXISTS', [None])
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def setacl(self, mailbox, who, what):
"""Set a mailbox acl.
(typ, [data]) = <instance>.create(mailbox, who, what)
"""
return self._simple_command('SETACL', mailbox, who, what)
def sort(self, sort_criteria, charset, *search_criteria):
"""IMAP4rev1 extension SORT command.
(typ, [data]) = <instance>.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)
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if (sort_criteria[0],sort_criteria[-1]) != ('(',')'):
sort_criteria = '(%s)' % sort_criteria
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typ, dat = apply(self._simple_command, (name, sort_criteria, charset) + search_criteria)
return self._untagged_response(typ, dat, name)
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def status(self, mailbox, names):
"""Request named status conditions for mailbox.
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(typ, [data]) = <instance>.status(mailbox, names)
"""
name = 'STATUS'
#if self.PROTOCOL_VERSION == 'IMAP4': # Let the server decide!
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# raise self.error('%s unimplemented in IMAP4 (obtain IMAP4rev1 server, or re-code)' % name)
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typ, dat = self._simple_command(name, mailbox, names)
return self._untagged_response(typ, dat, name)
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def store(self, message_set, command, flags):
"""Alters flag dispositions for messages in mailbox.
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(typ, [data]) = <instance>.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')
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def subscribe(self, mailbox):
"""Subscribe to new mailbox.
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(typ, [data]) = <instance>.subscribe(mailbox)
"""
return self._simple_command('SUBSCRIBE', mailbox)
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def uid(self, command, *args):
"""Execute "command arg ..." with messages identified by UID,
rather than message number.
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(typ, [data]) = <instance>.uid(command, arg1, arg2, ...)
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Returns response appropriate to 'command'.
"""
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command = command.upper()
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if not Commands.has_key(command):
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)
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if command in ('SEARCH', 'SORT'):
name = command
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else:
name = 'FETCH'
return self._untagged_response(typ, dat, name)
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def unsubscribe(self, mailbox):
"""Unsubscribe from old mailbox.
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(typ, [data]) = <instance>.unsubscribe(mailbox)
"""
return self._simple_command('UNSUBSCRIBE', mailbox)
def xatom(self, name, *args):
"""Allow simple extension commands
notified by server in CAPABILITY response.
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Assumes command is legal in current state.
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(typ, [data]) = <instance>.xatom(name, arg, ...)
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Returns response appropriate to extension command `name'.
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"""
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name = name.upper()
#if not name in self.capabilities: # Let the server decide!
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# raise self.error('unknown extension command: %s' % name)
if not Commands.has_key(name):
Commands[name] = (self.state,)
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return apply(self._simple_command, (name,) + args)
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# 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"]' %
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(typ, len(ur.get(typ,'')), dat))
if ur.has_key(typ):
ur[typ].append(dat)
else:
ur[typ] = [dat]
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def _check_bye(self):
bye = self.untagged_responses.get('BYE')
if bye:
raise self.abort(bye[-1])
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def _command(self, name, *args):
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if self.state not in Commands[name]:
self.literal = None
raise self.error(
'command %s illegal in state %s' % (name, self.state))
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for typ in ('OK', 'NO', 'BAD'):
if self.untagged_responses.has_key(typ):
del self.untagged_responses[typ]
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if self.untagged_responses.has_key('READ-ONLY') \
and not self.is_readonly:
raise self.readonly('mailbox status changed to READ-ONLY')
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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))
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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))
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if __debug__:
if self.debug >= 4:
self._mesg('> %s' % data)
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else:
self._log('> %s' % data)
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try:
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self.send('%s%s' % (data, CRLF))
except (socket.error, OSError), val:
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raise self.abort('socket error: %s' % val)
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if literal is None:
return tag
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while 1:
# Wait for continuation response
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while self._get_response():
if self.tagged_commands[tag]: # BAD/NO?
return tag
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# Send literal
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if literator:
literal = literator(self.continuation_response)
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if __debug__:
if self.debug >= 4:
self._mesg('write literal size %s' % len(literal))
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try:
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self.send(literal)
self.send(CRLF)
except (socket.error, OSError), val:
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raise self.abort('socket error: %s' % val)
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if not literator:
break
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return tag
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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
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def _get_response(self):
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# Read response and store.
#
# Returns None for continuation responses,
# otherwise first response line received.
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resp = self._get_line()
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# Command completion response?
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if self._match(self.tagre, resp):
tag = self.mo.group('tag')
if not self.tagged_commands.has_key(tag):
raise self.abort('unexpected tagged response: %s' % resp)
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typ = self.mo.group('type')
dat = self.mo.group('data')
self.tagged_commands[tag] = (typ, [dat])
else:
dat2 = None
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# '*' (untagged) responses?
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if not self._match(Untagged_response, resp):
if self._match(Untagged_status, resp):
dat2 = self.mo.group('data2')
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if self.mo is None:
# Only other possibility is '+' (continuation) response...
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if self._match(Continuation, resp):
self.continuation_response = self.mo.group('data')
return None # NB: indicates continuation
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raise self.abort("unexpected response: '%s'" % resp)
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typ = self.mo.group('type')
dat = self.mo.group('data')
if dat is None: dat = '' # Null untagged response
if dat2: dat = dat + ' ' + dat2
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# Is there a literal to come?
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while self._match(Literal, dat):
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# Read literal direct from connection.
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size = int(self.mo.group('size'))
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if __debug__:
if self.debug >= 4:
self._mesg('read literal size %s' % size)
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data = self.read(size)
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# Store response with literal as tuple
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self._append_untagged(typ, (dat, data))
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# Read trailer - possibly containing another literal
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dat = self._get_line()
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self._append_untagged(typ, dat)
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# Bracketed response information?
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if typ in ('OK', 'NO', 'BAD') and self._match(Response_code, dat):
self._append_untagged(self.mo.group('type'), self.mo.group('data'))
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if __debug__:
if self.debug >= 1 and typ in ('NO', 'BAD', 'BYE'):
self._mesg('%s response: %s' % (typ, dat))
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return resp
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def _get_tagged_response(self, tag):
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while 1:
result = self.tagged_commands[tag]
if result is not None:
del self.tagged_commands[tag]
return result
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# 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()'.
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try:
self._get_response()
except self.abort, val:
if __debug__:
if self.debug >= 1:
self.print_log()
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raise
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def _get_line(self):
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line = self.readline()
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if not line:
raise self.abort('socket error: EOF')
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# Protocol mandates all lines terminated by CRLF
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line = line[:-2]
if __debug__:
if self.debug >= 4:
self._mesg('< %s' % line)
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else:
self._log('< %s' % line)
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return line
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def _match(self, cre, s):
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# Run compiled regular expression match method on 's'.
# Save result, return success.
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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()`))
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return self.mo is not None
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def _new_tag(self):
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tag = '%s%s' % (self.tagpre, self.tagnum)
self.tagnum = self.tagnum + 1
self.tagged_commands[tag] = None
return tag
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def _checkquote(self, arg):
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# Must quote command args if non-alphanumeric chars present,
# and not already quoted.
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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)
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def _quote(self, arg):
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arg = arg.replace('\\', '\\\\')
arg = arg.replace('"', '\\"')
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return '"%s"' % arg
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def _simple_command(self, name, *args):
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return self._command_complete(name, apply(self._command, (name,) + args))
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def _untagged_response(self, typ, dat, name):
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if typ == 'NO':
return typ, dat
if not self.untagged_responses.has_key(name):
return typ, [None]
data = self.untagged_responses[name]
if __debug__:
if self.debug >= 5:
self._mesg('untagged_responses[%s] => %s' % (name, data))
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del self.untagged_responses[name]
return typ, data
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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
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class IMAP4_SSL(IMAP4):
"""IMAP4 client class over SSL connection
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Instantiate with: IMAP4_SSL([host[, port[, keyfile[, certfile]]]])
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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):
"""Setup connection to remote server on "host:port".
This connection will be used by the routines:
read, readline, send, shutdown.
"""
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.connect((self.host, self.port))
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self.sslobj = socket.ssl(self.sock,self.keyfile, self.certfile)
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def read(self, size):
"""Read 'size' bytes from remote."""
return self.sslobj.read(size)
def readline(self):
"""Read line from remote."""
line = ""
while 1:
char = self.sslobj.read(1)
line += char
if char == "\n": return line
def send(self, data):
"""Send data to remote."""
self.sslobj.write(data)
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 = <instance>.socket()
"""
return self.sock
def ssl(self):
"""Return SSLObject instance used to communicate with the IMAP4 server.
ssl = <instance>.socket.ssl()
"""
return self.sslobj
class _Authenticator:
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"""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)
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Mon2num = {'Jan': 1, 'Feb': 2, 'Mar': 3, 'Apr': 4, 'May': 5, 'Jun': 6,
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'Jul': 7, 'Aug': 8, 'Sep': 9, 'Oct': 10, 'Nov': 11, 'Dec': 12}
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def Internaldate2tuple(resp):
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"""Convert IMAP4 INTERNALDATE to UT.
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Returns Python time module tuple.
"""
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mo = InternalDate.match(resp)
if not mo:
return None
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mon = Mon2num[mo.group('mon')]
zonen = mo.group('zonen')
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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'))
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# INTERNALDATE timezone must be subtracted to get UT
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zone = (zoneh*60 + zonem)*60
if zonen == '-':
zone = -zone
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tt = (year, mon, day, hour, min, sec, -1, -1, -1)
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utc = time.mktime(tt)
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# Following is necessary because the time module has no 'mkgmtime'.
# 'mktime' assumes arg in local timezone, so adds timezone/altzone.
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lt = time.localtime(utc)
if time.daylight and lt[-1]:
zone = zone + time.altzone
else:
zone = zone + time.timezone
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return time.localtime(utc - zone)
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def Int2AP(num):
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"""Convert integer to A-P string representation."""
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val = ''; AP = 'ABCDEFGHIJKLMNOP'
num = int(abs(num))
while num:
num, mod = divmod(num, 16)
val = AP[mod] + val
return val
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def ParseFlags(resp):
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"""Convert IMAP4 flags response to python tuple."""
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mo = Flags.match(resp)
if not mo:
return ()
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return tuple(mo.group('flags').split())
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def Time2Internaldate(date_time):
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"""Convert 'date_time' to IMAP4 INTERNALDATE representation.
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Return string in form: '"DD-Mmm-YYYY HH:MM:SS +HHMM"'
"""
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if isinstance(date_time, (int, float)):
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tt = time.localtime(date_time)
elif isinstance(date_time, (tuple, time.struct_time)):
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tt = date_time
elif isinstance(date_time, str):
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return date_time # Assume in correct format
else:
raise ValueError("date_time not of a known type")
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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) + '"'
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if __name__ == '__main__':
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import getopt, getpass
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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()
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PASSWD = getpass.getpass("IMAP password for %s on %s: " % (USER, host or "localhost"))
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test_mesg = 'From: %(user)s@localhost%(lf)sSubject: IMAP4 test%(lf)s%(lf)sdata...%(lf)s' % {'user':USER, 'lf':CRLF}
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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)')),
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('store', ('1', 'FLAGS', '(\Deleted)')),
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('namespace', ()),
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('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))
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typ, dat = apply(getattr(M, cmd), args)
M._mesg('%s => %s %s' % (cmd, typ, dat))
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return dat
try:
M = IMAP4(host)
M._mesg('PROTOCOL_VERSION = %s' % M.PROTOCOL_VERSION)
M._mesg('CAPABILITIES = %s' % `M.capabilities`)
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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)
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else: path = ml.split()[-1]
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run('delete', (path,))
for cmd,args in test_seq2:
dat = run(cmd, args)
if (cmd,args) != ('uid', ('SEARCH', 'ALL')):
continue
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uid = dat[-1].split()
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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]
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raise