Based on the J. Myers POP3 draft, Jan. 96
# Author: David Ascher <david_ascher@brown.edu>
# [heavily stealing from nntplib.py]
# Updated: Piers Lauder <piers@cs.su.oz.au> [Jul '97]
# String method conversion and test jig improvements by ESR, February 2001.
# Added the POP3_SSL class. Methods loosely based on IMAP_SSL. Hector Urtubia <urtubia@mrbook.org> Aug 2003
# Example (see the test function at the end of this file)
__all__ = ["POP3","error_proto"]
# Exception raised when an error or invalid response is received:
class error_proto(Exception): pass
# Line terminators (we always output CRLF, but accept any of CRLF, LFCR, LF)
# maximal line length when calling readline(). This is to prevent
# reading arbitrary length lines. RFC 1939 limits POP3 line length to
# 512 characters, including CRLF. We have selected 2048 just to be on
"""This class supports both the minimal and optional command sets.
Arguments can be strings or integers (where appropriate)
(e.g.: retr(1) and retr('1') both work equally well.
PASS string pass_(string)
LIST [msg] list(msg = None)
Optional Commands (some servers support these):
APOP name digest apop(name, digest)
UIDL [msg] uidl(msg = None)
Raises one exception: 'error_proto'.
NB: the POP protocol locks the mailbox from user
authorization until QUIT, so be sure to get in, suck
the messages, and quit, each time you access the
POP is a line-based protocol, which means large mail
messages consume lots of python cycles reading them
If it's available on your mail server, use IMAP4
instead, it doesn't suffer from the two problems
def __init__(self, host, port=POP3_PORT,
timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
self.sock = socket.create_connection((host, port), timeout)
self.file = self.sock.makefile('rb')
self.welcome = self._getresp()
def _putline(self, line):
if self._debugging > 1: print '*put*', repr(line)
self.sock.sendall('%s%s' % (line, CRLF))
# Internal: send one command to the server (through _putline())
if self._debugging: print '*cmd*', repr(line)
# Internal: return one line from the server, stripping CRLF.
# This is where all the CPU time of this module is consumed.
# Raise error_proto('-ERR EOF') if the connection is closed.
line = self.file.readline(_MAXLINE + 1)
raise error_proto('line too long')
if self._debugging > 1: print '*get*', repr(line)
if not line: raise error_proto('-ERR EOF')
# server can send any combination of CR & LF
# however, 'readline()' returns lines ending in LF
# so only possibilities are ...LF, ...CRLF, CR...LF
return line[1:-1], octets
# Internal: get a response from the server.
# Raise 'error_proto' if the response doesn't start with '+'.
resp, o = self._getline()
if self._debugging > 1: print '*resp*', repr(resp)
# Internal: get a response plus following text from the server.
line, o = self._getline()
line, o = self._getline()
return resp, list, octets
# Internal: send a command and get the response
def _shortcmd(self, line):
# Internal: send a command and get the response plus following text
def _longcmd(self, line):
return self._getlongresp()
def set_debuglevel(self, level):
# Here are all the POP commands:
"""Send user name, return response
(should indicate password required).
return self._shortcmd('USER %s' % user)
"""Send password, return response
(response includes message count, mailbox size).
NB: mailbox is locked by server from here to 'quit()'
return self._shortcmd('PASS %s' % pswd)
Result is tuple of 2 ints (message count, mailbox size)
retval = self._shortcmd('STAT')
if self._debugging: print '*stat*', repr(rets)
numMessages = int(rets[1])
sizeMessages = int(rets[2])
return (numMessages, sizeMessages)
def list(self, which=None):
"""Request listing, return result.
Result without a message number argument is in form
['response', ['mesg_num octets', ...], octets].
Result when a message number argument is given is a
single response: the "scan listing" for that message.
return self._shortcmd('LIST %s' % which)
return self._longcmd('LIST')
"""Retrieve whole message number 'which'.
Result is in form ['response', ['line', ...], octets].
return self._longcmd('RETR %s' % which)
"""Delete message number 'which'.
return self._shortcmd('DELE %s' % which)
One supposes the response indicates the server is alive.
return self._shortcmd('NOOP')
"""Unmark all messages marked for deletion."""
return self._shortcmd('RSET')
"""Signoff: commit changes on server, unlock mailbox, close connection."""
resp = self._shortcmd('QUIT')
"""Not sure what this does."""
return self._shortcmd('RPOP %s' % user)
timestamp = re.compile(br'\+OK.[^<]*(<.*>)')
def apop(self, user, secret):
- only possible if server has supplied a timestamp in initial greeting.
secret - secret shared between client and server.
NB: mailbox is locked by server from here to 'quit()'
m = self.timestamp.match(self.welcome)
raise error_proto('-ERR APOP not supported by server')
digest = hashlib.md5(m.group(1)+secret).digest()
digest = ''.join(map(lambda x:'%02x'%ord(x), digest))
return self._shortcmd('APOP %s %s' % (user, digest))
def top(self, which, howmuch):
"""Retrieve message header of message number 'which'
and first 'howmuch' lines of message body.
Result is in form ['response', ['line', ...], octets].
return self._longcmd('TOP %s %s' % (which, howmuch))
def uidl(self, which=None):
"""Return message digest (unique id) list.
If 'which', result contains unique id for that message
in the form 'response mesgnum uid', otherwise result is
the list ['response', ['mesgnum uid', ...], octets]
return self._shortcmd('UIDL %s' % which)
return self._longcmd('UIDL')
"""POP3 client class over SSL connection
Instantiate with: POP3_SSL(hostname, port=995, keyfile=None, certfile=None)
hostname - the hostname of the pop3 over ssl server
keyfile - PEM formatted file that contains your private key
certfile - PEM formatted certificate chain file
See the methods of the parent class POP3 for more documentation.
def __init__(self, host, port = POP3_SSL_PORT, keyfile = None, certfile = None):
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
self.sock = socket.socket(af, socktype, proto)
except socket.error, msg:
self.file = self.sock.makefile('rb')
self.sslobj = ssl.wrap_socket(self.sock, self.keyfile, self.certfile)
self.welcome = self._getresp()
localbuf = self.sslobj.read()
raise error_proto('-ERR EOF')
renewline = re.compile(r'.*?\n')
match = renewline.match(self.buffer)
if len(self.buffer) > _MAXLINE:
raise error_proto('line too long')
match = renewline.match(self.buffer)
self.buffer = renewline.sub('' ,self.buffer, 1)
if self._debugging > 1: print '*get*', repr(line)
return line[1:-1], octets
def _putline(self, line):
if self._debugging > 1: print '*put*', repr(line)
sent = self.sslobj.write(line)
"""Signoff: commit changes on server, unlock mailbox, close connection."""
resp = self._shortcmd('QUIT')
del self.sslobj, self.sock
__all__.append("POP3_SSL")
if __name__ == "__main__":
(numMsgs, totalSize) = a.stat()
for i in range(1, numMsgs + 1):
(header, msg, octets) = a.retr(i)
print '-----------------------'
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
