/usr/lib/python2.7/poplib.py is in libpython2.7-stdlib 2.7.6-8ubuntu0.5.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 | """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
# 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
# the safe side.
_MAXLINE = 2048
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(_MAXLINE + 1)
if len(line) > _MAXLINE:
raise error_proto('line too long')
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(br'\+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()
if len(self.buffer) > _MAXLINE:
raise error_proto('line too long')
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()
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