summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_poplib.py
blob: 27e3a9fb567ada623c65b066da611af5cd4591e3 (plain)
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
"""Test script for poplib module."""

# Modified by Giampaolo Rodola' to give poplib.POP3 and poplib.POP3_SSL
# a real test suite

import poplib
import threading
import asyncore
import asynchat
import socket
import os
import time

from unittest import TestCase
from test import support as test_support

HOST = test_support.HOST
PORT = 0

# the dummy data returned by server when LIST and RETR commands are issued
LIST_RESP = b'1 1\r\n2 2\r\n3 3\r\n4 4\r\n5 5\r\n.\r\n'
RETR_RESP = b"""From: postmaster@python.org\
\r\nContent-Type: text/plain\r\n\
MIME-Version: 1.0\r\n\
Subject: Dummy\r\n\
\r\n\
line1\r\n\
line2\r\n\
line3\r\n\
.\r\n"""


class DummyPOP3Handler(asynchat.async_chat):

    def __init__(self, conn):
        asynchat.async_chat.__init__(self, conn)
        self.set_terminator(b"\r\n")
        self.in_buffer = []
        self.push('+OK dummy pop3 server ready. <timestamp>')

    def collect_incoming_data(self, data):
        self.in_buffer.append(data)

    def found_terminator(self):
        line = b''.join(self.in_buffer)
        line = str(line, 'ISO-8859-1')
        self.in_buffer = []
        cmd = line.split(' ')[0].lower()
        space = line.find(' ')
        if space != -1:
            arg = line[space + 1:]
        else:
            arg = ""
        if hasattr(self, 'cmd_' + cmd):
            method = getattr(self, 'cmd_' + cmd)
            method(arg)
        else:
            self.push('-ERR unrecognized POP3 command "%s".' %cmd)

    def handle_error(self):
        raise

    def push(self, data):
        asynchat.async_chat.push(self, data.encode("ISO-8859-1") + b'\r\n')

    def cmd_echo(self, arg):
        # sends back the received string (used by the test suite)
        self.push(arg)

    def cmd_user(self, arg):
        if arg != "guido":
            self.push("-ERR no such user")
        self.push('+OK password required')

    def cmd_pass(self, arg):
        if arg != "python":
            self.push("-ERR wrong password")
        self.push('+OK 10 messages')

    def cmd_stat(self, arg):
        self.push('+OK 10 100')

    def cmd_list(self, arg):
        if arg:
            self.push('+OK %s %s' %(arg, arg))
        else:
            self.push('+OK')
            asynchat.async_chat.push(self, LIST_RESP)

    cmd_uidl = cmd_list

    def cmd_retr(self, arg):
        self.push('+OK %s bytes' %len(RETR_RESP))
        asynchat.async_chat.push(self, RETR_RESP)

    cmd_top = cmd_retr

    def cmd_dele(self, arg):
        self.push('+OK message marked for deletion.')

    def cmd_noop(self, arg):
        self.push('+OK done nothing.')

    def cmd_rpop(self, arg):
        self.push('+OK done nothing.')

    def cmd_apop(self, arg):
        self.push('+OK done nothing.')


class DummyPOP3Server(asyncore.dispatcher, threading.Thread):

    handler = DummyPOP3Handler

    def __init__(self, address, af=socket.AF_INET):
        threading.Thread.__init__(self)
        asyncore.dispatcher.__init__(self)
        self.create_socket(af, socket.SOCK_STREAM)
        self.bind(address)
        self.listen(5)
        self.active = False
        self.active_lock = threading.Lock()
        self.host, self.port = self.socket.getsockname()[:2]

    def start(self):
        assert not self.active
        self.__flag = threading.Event()
        threading.Thread.start(self)
        self.__flag.wait()

    def run(self):
        self.active = True
        self.__flag.set()
        while self.active and asyncore.socket_map:
            self.active_lock.acquire()
            asyncore.loop(timeout=0.1, count=1)
            self.active_lock.release()
        asyncore.close_all(ignore_all=True)

    def stop(self):
        assert self.active
        self.active = False
        self.join()

    def handle_accept(self):
        conn, addr = self.accept()
        self.handler = self.handler(conn)
        self.close()

    def handle_connect(self):
        self.close()
    handle_read = handle_connect

    def writable(self):
        return 0

    def handle_error(self):
        raise


class TestPOP3Class(TestCase):
    def assertOK(self, resp):
        self.assertTrue(resp.startswith(b"+OK"))

    def setUp(self):
        self.server = DummyPOP3Server((HOST, PORT))
        self.server.start()
        self.client = poplib.POP3(self.server.host, self.server.port)

    def tearDown(self):
        self.client.quit()
        self.server.stop()

    def test_getwelcome(self):
        self.assertEqual(self.client.getwelcome(),
                         b'+OK dummy pop3 server ready. <timestamp>')

    def test_exceptions(self):
        self.assertRaises(poplib.error_proto, self.client._shortcmd, 'echo -err')

    def test_user(self):
        self.assertOK(self.client.user('guido'))
        self.assertRaises(poplib.error_proto, self.client.user, 'invalid')

    def test_pass_(self):
        self.assertOK(self.client.pass_('python'))
        self.assertRaises(poplib.error_proto, self.client.user, 'invalid')

    def test_stat(self):
        self.assertEqual(self.client.stat(), (10, 100))

    def test_list(self):
        self.assertEqual(self.client.list()[1:],
                         ([b'1 1', b'2 2', b'3 3', b'4 4', b'5 5'],
                          25))
        self.assertTrue(self.client.list('1').endswith(b"OK 1 1"))

    def test_retr(self):
        expected = (b'+OK 116 bytes',
                    [b'From: postmaster@python.org', b'Content-Type: text/plain',
                     b'MIME-Version: 1.0', b'Subject: Dummy',
                     b'', b'line1', b'line2', b'line3'],
                    113)
        foo = self.client.retr('foo')
        self.assertEqual(foo, expected)

    def test_dele(self):
        self.assertOK(self.client.dele('foo'))

    def test_noop(self):
        self.assertOK(self.client.noop())

    def test_rpop(self):
        self.assertOK(self.client.rpop('foo'))

    def test_apop(self):
        self.assertOK(self.client.apop('foo', 'dummypassword'))

    def test_top(self):
        expected =  (b'+OK 116 bytes',
                     [b'From: postmaster@python.org', b'Content-Type: text/plain',
                      b'MIME-Version: 1.0', b'Subject: Dummy', b'',
                      b'line1', b'line2', b'line3'],
                     113)
        self.assertEqual(self.client.top(1, 1), expected)

    def test_uidl(self):
        self.client.uidl()
        self.client.uidl('foo')


SUPPORTS_SSL = False
if hasattr(poplib, 'POP3_SSL'):
    import ssl

    SUPPORTS_SSL = True
    CERTFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "keycert.pem")

    class DummyPOP3_SSLHandler(DummyPOP3Handler):

        def __init__(self, conn):
            asynchat.async_chat.__init__(self, conn)
            ssl_socket = ssl.wrap_socket(self.socket, certfile=CERTFILE,
                                          server_side=True)
            self.del_channel()
            self.set_socket(ssl_socket)
            self.set_terminator(b"\r\n")
            self.in_buffer = []
            self.push('+OK dummy pop3 server ready. <timestamp>')

    class TestPOP3_SSLClass(TestPOP3Class):
        # repeat previous tests by using poplib.POP3_SSL

        def setUp(self):
            self.server = DummyPOP3Server((HOST, PORT))
            self.server.handler = DummyPOP3_SSLHandler
            self.server.start()
            self.client = poplib.POP3_SSL(self.server.host, self.server.port)

        def test__all__(self):
            self.assertIn('POP3_SSL', poplib.__all__)


class TestTimeouts(TestCase):

    def setUp(self):
        self.evt = threading.Event()
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.sock.settimeout(3)
        self.port = test_support.bind_port(self.sock)
        threading.Thread(target=self.server, args=(self.evt,self.sock)).start()
        time.sleep(.1)

    def tearDown(self):
        self.evt.wait()

    def server(self, evt, serv):
        serv.listen(5)
        try:
            conn, addr = serv.accept()
        except socket.timeout:
            pass
        else:
            conn.send(b"+ Hola mundo\n")
            conn.close()
        finally:
            serv.close()
            evt.set()

    def testTimeoutDefault(self):
        self.assertTrue(socket.getdefaulttimeout() is None)
        socket.setdefaulttimeout(30)
        try:
            pop = poplib.POP3("localhost", self.port)
        finally:
            socket.setdefaulttimeout(None)
        self.assertEqual(pop.sock.gettimeout(), 30)
        pop.sock.close()

    def testTimeoutNone(self):
        self.assertTrue(socket.getdefaulttimeout() is None)
        socket.setdefaulttimeout(30)
        try:
            pop = poplib.POP3(HOST, self.port, timeout=None)
        finally:
            socket.setdefaulttimeout(None)
        self.assertTrue(pop.sock.gettimeout() is None)
        pop.sock.close()

    def testTimeoutValue(self):
        pop = poplib.POP3("localhost", self.port, timeout=30)
        self.assertEqual(pop.sock.gettimeout(), 30)
        pop.sock.close()


def test_main():
    tests = [TestPOP3Class, TestTimeouts]
    if SUPPORTS_SSL:
        tests.append(TestPOP3_SSLClass)
    thread_info = test_support.threading_setup()
    try:
        test_support.run_unittest(*tests)
    finally:
        test_support.threading_cleanup(*thread_info)


if __name__ == '__main__':
    test_main()