mirror of
https://github.com/microsoft/PowerToys.git
synced 2024-12-15 12:09:18 +08:00
418 lines
12 KiB
Python
418 lines
12 KiB
Python
"""A POP3 client class.
|
|
|
|
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)
|
|
|
|
# Imports
|
|
|
|
import re, socket
|
|
|
|
__all__ = ["POP3","error_proto"]
|
|
|
|
# Exception raised when an error or invalid response is received:
|
|
|
|
class error_proto(Exception): pass
|
|
|
|
# Standard Port
|
|
POP3_PORT = 110
|
|
|
|
# POP SSL PORT
|
|
POP3_SSL_PORT = 995
|
|
|
|
# Line terminators (we always output CRLF, but accept any of CRLF, LFCR, LF)
|
|
CR = '\r'
|
|
LF = '\n'
|
|
CRLF = CR+LF
|
|
|
|
|
|
class POP3:
|
|
|
|
"""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.
|
|
|
|
Minimal Command Set:
|
|
USER name user(name)
|
|
PASS string pass_(string)
|
|
STAT stat()
|
|
LIST [msg] list(msg = None)
|
|
RETR msg retr(msg)
|
|
DELE msg dele(msg)
|
|
NOOP noop()
|
|
RSET rset()
|
|
QUIT quit()
|
|
|
|
Optional Commands (some servers support these):
|
|
RPOP name rpop(name)
|
|
APOP name digest apop(name, digest)
|
|
TOP msg n top(msg, n)
|
|
UIDL [msg] uidl(msg = None)
|
|
|
|
Raises one exception: 'error_proto'.
|
|
|
|
Instantiate with:
|
|
POP3(hostname, port=110)
|
|
|
|
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
|
|
mailbox.
|
|
|
|
POP is a line-based protocol, which means large mail
|
|
messages consume lots of python cycles reading them
|
|
line-by-line.
|
|
|
|
If it's available on your mail server, use IMAP4
|
|
instead, it doesn't suffer from the two problems
|
|
above.
|
|
"""
|
|
|
|
|
|
def __init__(self, host, port=POP3_PORT,
|
|
timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
|
|
self.host = host
|
|
self.port = port
|
|
self.sock = socket.create_connection((host, port), timeout)
|
|
self.file = self.sock.makefile('rb')
|
|
self._debugging = 0
|
|
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())
|
|
|
|
def _putcmd(self, line):
|
|
if self._debugging: print '*cmd*', repr(line)
|
|
self._putline(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.
|
|
|
|
def _getline(self):
|
|
line = self.file.readline()
|
|
if self._debugging > 1: print '*get*', repr(line)
|
|
if not line: raise error_proto('-ERR EOF')
|
|
octets = len(line)
|
|
# server can send any combination of CR & LF
|
|
# however, 'readline()' returns lines ending in LF
|
|
# so only possibilities are ...LF, ...CRLF, CR...LF
|
|
if line[-2:] == CRLF:
|
|
return line[:-2], octets
|
|
if line[0] == CR:
|
|
return line[1:-1], octets
|
|
return line[:-1], octets
|
|
|
|
|
|
# Internal: get a response from the server.
|
|
# Raise 'error_proto' if the response doesn't start with '+'.
|
|
|
|
def _getresp(self):
|
|
resp, o = self._getline()
|
|
if self._debugging > 1: print '*resp*', repr(resp)
|
|
c = resp[:1]
|
|
if c != '+':
|
|
raise error_proto(resp)
|
|
return resp
|
|
|
|
|
|
# Internal: get a response plus following text from the server.
|
|
|
|
def _getlongresp(self):
|
|
resp = self._getresp()
|
|
list = []; octets = 0
|
|
line, o = self._getline()
|
|
while line != '.':
|
|
if line[:2] == '..':
|
|
o = o-1
|
|
line = line[1:]
|
|
octets = octets + o
|
|
list.append(line)
|
|
line, o = self._getline()
|
|
return resp, list, octets
|
|
|
|
|
|
# Internal: send a command and get the response
|
|
|
|
def _shortcmd(self, line):
|
|
self._putcmd(line)
|
|
return self._getresp()
|
|
|
|
|
|
# Internal: send a command and get the response plus following text
|
|
|
|
def _longcmd(self, line):
|
|
self._putcmd(line)
|
|
return self._getlongresp()
|
|
|
|
|
|
# These can be useful:
|
|
|
|
def getwelcome(self):
|
|
return self.welcome
|
|
|
|
|
|
def set_debuglevel(self, level):
|
|
self._debugging = level
|
|
|
|
|
|
# Here are all the POP commands:
|
|
|
|
def user(self, user):
|
|
"""Send user name, return response
|
|
|
|
(should indicate password required).
|
|
"""
|
|
return self._shortcmd('USER %s' % user)
|
|
|
|
|
|
def pass_(self, pswd):
|
|
"""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)
|
|
|
|
|
|
def stat(self):
|
|
"""Get mailbox status.
|
|
|
|
Result is tuple of 2 ints (message count, mailbox size)
|
|
"""
|
|
retval = self._shortcmd('STAT')
|
|
rets = retval.split()
|
|
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.
|
|
"""
|
|
if which is not None:
|
|
return self._shortcmd('LIST %s' % which)
|
|
return self._longcmd('LIST')
|
|
|
|
|
|
def retr(self, which):
|
|
"""Retrieve whole message number 'which'.
|
|
|
|
Result is in form ['response', ['line', ...], octets].
|
|
"""
|
|
return self._longcmd('RETR %s' % which)
|
|
|
|
|
|
def dele(self, which):
|
|
"""Delete message number 'which'.
|
|
|
|
Result is 'response'.
|
|
"""
|
|
return self._shortcmd('DELE %s' % which)
|
|
|
|
|
|
def noop(self):
|
|
"""Does nothing.
|
|
|
|
One supposes the response indicates the server is alive.
|
|
"""
|
|
return self._shortcmd('NOOP')
|
|
|
|
|
|
def rset(self):
|
|
"""Unmark all messages marked for deletion."""
|
|
return self._shortcmd('RSET')
|
|
|
|
|
|
def quit(self):
|
|
"""Signoff: commit changes on server, unlock mailbox, close connection."""
|
|
try:
|
|
resp = self._shortcmd('QUIT')
|
|
except error_proto, val:
|
|
resp = val
|
|
self.file.close()
|
|
self.sock.close()
|
|
del self.file, self.sock
|
|
return resp
|
|
|
|
#__del__ = quit
|
|
|
|
|
|
# optional commands:
|
|
|
|
def rpop(self, user):
|
|
"""Not sure what this does."""
|
|
return self._shortcmd('RPOP %s' % user)
|
|
|
|
|
|
timestamp = re.compile(r'\+OK.*(<[^>]+>)')
|
|
|
|
def apop(self, user, secret):
|
|
"""Authorisation
|
|
|
|
- only possible if server has supplied a timestamp in initial greeting.
|
|
|
|
Args:
|
|
user - mailbox user;
|
|
secret - secret shared between client and server.
|
|
|
|
NB: mailbox is locked by server from here to 'quit()'
|
|
"""
|
|
m = self.timestamp.match(self.welcome)
|
|
if not m:
|
|
raise error_proto('-ERR APOP not supported by server')
|
|
import hashlib
|
|
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]
|
|
"""
|
|
if which is not None:
|
|
return self._shortcmd('UIDL %s' % which)
|
|
return self._longcmd('UIDL')
|
|
|
|
try:
|
|
import ssl
|
|
except ImportError:
|
|
pass
|
|
else:
|
|
|
|
class POP3_SSL(POP3):
|
|
"""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
|
|
port - port number
|
|
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):
|
|
self.host = host
|
|
self.port = port
|
|
self.keyfile = keyfile
|
|
self.certfile = certfile
|
|
self.buffer = ""
|
|
msg = "getaddrinfo returns an empty list"
|
|
self.sock = None
|
|
for res in socket.getaddrinfo(self.host, self.port, 0, socket.SOCK_STREAM):
|
|
af, socktype, proto, canonname, sa = res
|
|
try:
|
|
self.sock = socket.socket(af, socktype, proto)
|
|
self.sock.connect(sa)
|
|
except socket.error, msg:
|
|
if self.sock:
|
|
self.sock.close()
|
|
self.sock = None
|
|
continue
|
|
break
|
|
if not self.sock:
|
|
raise socket.error, msg
|
|
self.file = self.sock.makefile('rb')
|
|
self.sslobj = ssl.wrap_socket(self.sock, self.keyfile, self.certfile)
|
|
self._debugging = 0
|
|
self.welcome = self._getresp()
|
|
|
|
def _fillBuffer(self):
|
|
localbuf = self.sslobj.read()
|
|
if len(localbuf) == 0:
|
|
raise error_proto('-ERR EOF')
|
|
self.buffer += localbuf
|
|
|
|
def _getline(self):
|
|
line = ""
|
|
renewline = re.compile(r'.*?\n')
|
|
match = renewline.match(self.buffer)
|
|
while not match:
|
|
self._fillBuffer()
|
|
match = renewline.match(self.buffer)
|
|
line = match.group(0)
|
|
self.buffer = renewline.sub('' ,self.buffer, 1)
|
|
if self._debugging > 1: print '*get*', repr(line)
|
|
|
|
octets = len(line)
|
|
if line[-2:] == CRLF:
|
|
return line[:-2], octets
|
|
if line[0] == CR:
|
|
return line[1:-1], octets
|
|
return line[:-1], octets
|
|
|
|
def _putline(self, line):
|
|
if self._debugging > 1: print '*put*', repr(line)
|
|
line += CRLF
|
|
bytes = len(line)
|
|
while bytes > 0:
|
|
sent = self.sslobj.write(line)
|
|
if sent == bytes:
|
|
break # avoid copy
|
|
line = line[sent:]
|
|
bytes = bytes - sent
|
|
|
|
def quit(self):
|
|
"""Signoff: commit changes on server, unlock mailbox, close connection."""
|
|
try:
|
|
resp = self._shortcmd('QUIT')
|
|
except error_proto, val:
|
|
resp = val
|
|
self.sock.close()
|
|
del self.sslobj, self.sock
|
|
return resp
|
|
|
|
__all__.append("POP3_SSL")
|
|
|
|
if __name__ == "__main__":
|
|
import sys
|
|
a = POP3(sys.argv[1])
|
|
print a.getwelcome()
|
|
a.user(sys.argv[2])
|
|
a.pass_(sys.argv[3])
|
|
a.list()
|
|
(numMsgs, totalSize) = a.stat()
|
|
for i in range(1, numMsgs + 1):
|
|
(header, msg, octets) = a.retr(i)
|
|
print "Message %d:" % i
|
|
for line in msg:
|
|
print ' ' + line
|
|
print '-----------------------'
|
|
a.quit()
|