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
|
"""
Tests for uu module.
Nick Mathewson
"""
import unittest
from test import support
import os
import stat
import sys
import uu
import io
plaintext = b"The symbols on top of your keyboard are !@#$%^&*()_+|~\n"
encodedtext = b"""\
M5&AE('-Y;6)O;',@;VX@=&]P(&]F('EO=7(@:V5Y8F]A<F0@87)E("% (R0E
*7B8J*"E?*WQ^"@ """
# Stolen from io.py
class FakeIO(io.TextIOWrapper):
"""Text I/O implementation using an in-memory buffer.
Can be a used as a drop-in replacement for sys.stdin and sys.stdout.
"""
# XXX This is really slow, but fully functional
def __init__(self, initial_value="", encoding="utf-8",
errors="strict", newline="\n"):
super(FakeIO, self).__init__(io.BytesIO(),
encoding=encoding,
errors=errors,
newline=newline)
self._encoding = encoding
self._errors = errors
if initial_value:
if not isinstance(initial_value, str):
initial_value = str(initial_value)
self.write(initial_value)
self.seek(0)
def getvalue(self):
self.flush()
return self.buffer.getvalue().decode(self._encoding, self._errors)
def encodedtextwrapped(mode, filename, backtick=False):
if backtick:
res = (bytes("begin %03o %s\n" % (mode, filename), "ascii") +
encodedtext.replace(b' ', b'`') + b"\n`\nend\n")
else:
res = (bytes("begin %03o %s\n" % (mode, filename), "ascii") +
encodedtext + b"\n \nend\n")
return res
class UUTest(unittest.TestCase):
def test_encode(self):
inp = io.BytesIO(plaintext)
out = io.BytesIO()
uu.encode(inp, out, "t1")
self.assertEqual(out.getvalue(), encodedtextwrapped(0o666, "t1"))
inp = io.BytesIO(plaintext)
out = io.BytesIO()
uu.encode(inp, out, "t1", 0o644)
self.assertEqual(out.getvalue(), encodedtextwrapped(0o644, "t1"))
inp = io.BytesIO(plaintext)
out = io.BytesIO()
uu.encode(inp, out, "t1", backtick=True)
self.assertEqual(out.getvalue(), encodedtextwrapped(0o666, "t1", True))
with self.assertRaises(TypeError):
uu.encode(inp, out, "t1", 0o644, True)
def test_decode(self):
for backtick in True, False:
inp = io.BytesIO(encodedtextwrapped(0o666, "t1", backtick=backtick))
out = io.BytesIO()
uu.decode(inp, out)
self.assertEqual(out.getvalue(), plaintext)
inp = io.BytesIO(
b"UUencoded files may contain many lines,\n" +
b"even some that have 'begin' in them.\n" +
encodedtextwrapped(0o666, "t1", backtick=backtick)
)
out = io.BytesIO()
uu.decode(inp, out)
self.assertEqual(out.getvalue(), plaintext)
def test_truncatedinput(self):
inp = io.BytesIO(b"begin 644 t1\n" + encodedtext)
out = io.BytesIO()
try:
uu.decode(inp, out)
self.fail("No exception raised")
except uu.Error as e:
self.assertEqual(str(e), "Truncated input file")
def test_missingbegin(self):
inp = io.BytesIO(b"")
out = io.BytesIO()
try:
uu.decode(inp, out)
self.fail("No exception raised")
except uu.Error as e:
self.assertEqual(str(e), "No valid begin line found in input file")
def test_garbage_padding(self):
# Issue #22406
encodedtext1 = (
b"begin 644 file\n"
# length 1; bits 001100 111111 111111 111111
b"\x21\x2C\x5F\x5F\x5F\n"
b"\x20\n"
b"end\n"
)
encodedtext2 = (
b"begin 644 file\n"
# length 1; bits 001100 111111 111111 111111
b"\x21\x2C\x5F\x5F\x5F\n"
b"\x60\n"
b"end\n"
)
plaintext = b"\x33" # 00110011
for encodedtext in encodedtext1, encodedtext2:
with self.subTest("uu.decode()"):
inp = io.BytesIO(encodedtext)
out = io.BytesIO()
uu.decode(inp, out, quiet=True)
self.assertEqual(out.getvalue(), plaintext)
with self.subTest("uu_codec"):
import codecs
decoded = codecs.decode(encodedtext, "uu_codec")
self.assertEqual(decoded, plaintext)
def test_newlines_escaped(self):
# Test newlines are escaped with uu.encode
inp = io.BytesIO(plaintext)
out = io.BytesIO()
filename = "test.txt\n\roverflow.txt"
safefilename = b"test.txt\\n\\roverflow.txt"
uu.encode(inp, out, filename)
self.assertIn(safefilename, out.getvalue())
class UUStdIOTest(unittest.TestCase):
def setUp(self):
self.stdin = sys.stdin
self.stdout = sys.stdout
def tearDown(self):
sys.stdin = self.stdin
sys.stdout = self.stdout
def test_encode(self):
sys.stdin = FakeIO(plaintext.decode("ascii"))
sys.stdout = FakeIO()
uu.encode("-", "-", "t1", 0o666)
self.assertEqual(sys.stdout.getvalue(),
encodedtextwrapped(0o666, "t1").decode("ascii"))
def test_decode(self):
sys.stdin = FakeIO(encodedtextwrapped(0o666, "t1").decode("ascii"))
sys.stdout = FakeIO()
uu.decode("-", "-")
stdout = sys.stdout
sys.stdout = self.stdout
sys.stdin = self.stdin
self.assertEqual(stdout.getvalue(), plaintext.decode("ascii"))
class UUFileTest(unittest.TestCase):
def setUp(self):
self.tmpin = support.TESTFN_ASCII + "i"
self.tmpout = support.TESTFN_ASCII + "o"
self.addCleanup(support.unlink, self.tmpin)
self.addCleanup(support.unlink, self.tmpout)
def test_encode(self):
with open(self.tmpin, 'wb') as fin:
fin.write(plaintext)
with open(self.tmpin, 'rb') as fin:
with open(self.tmpout, 'wb') as fout:
uu.encode(fin, fout, self.tmpin, mode=0o644)
with open(self.tmpout, 'rb') as fout:
s = fout.read()
self.assertEqual(s, encodedtextwrapped(0o644, self.tmpin))
# in_file and out_file as filenames
uu.encode(self.tmpin, self.tmpout, self.tmpin, mode=0o644)
with open(self.tmpout, 'rb') as fout:
s = fout.read()
self.assertEqual(s, encodedtextwrapped(0o644, self.tmpin))
def test_decode(self):
with open(self.tmpin, 'wb') as f:
f.write(encodedtextwrapped(0o644, self.tmpout))
with open(self.tmpin, 'rb') as f:
uu.decode(f)
with open(self.tmpout, 'rb') as f:
s = f.read()
self.assertEqual(s, plaintext)
# XXX is there an xp way to verify the mode?
def test_decode_filename(self):
with open(self.tmpin, 'wb') as f:
f.write(encodedtextwrapped(0o644, self.tmpout))
uu.decode(self.tmpin)
with open(self.tmpout, 'rb') as f:
s = f.read()
self.assertEqual(s, plaintext)
def test_decodetwice(self):
# Verify that decode() will refuse to overwrite an existing file
with open(self.tmpin, 'wb') as f:
f.write(encodedtextwrapped(0o644, self.tmpout))
with open(self.tmpin, 'rb') as f:
uu.decode(f)
with open(self.tmpin, 'rb') as f:
self.assertRaises(uu.Error, uu.decode, f)
def test_decode_mode(self):
# Verify that decode() will set the given mode for the out_file
expected_mode = 0o444
with open(self.tmpin, 'wb') as f:
f.write(encodedtextwrapped(expected_mode, self.tmpout))
# make file writable again, so it can be removed (Windows only)
self.addCleanup(os.chmod, self.tmpout, expected_mode | stat.S_IWRITE)
with open(self.tmpin, 'rb') as f:
uu.decode(f)
self.assertEqual(
stat.S_IMODE(os.stat(self.tmpout).st_mode),
expected_mode
)
if __name__=="__main__":
unittest.main()
|
