Message125756
Consider the following test script:
import os
import urllib.request
os.chroot("/tmp")
urllib.request.urlopen("http://localhost")
When executed with enough privileges, the script terminates with the following traceback:
Traceback (most recent call last):
File "./test.py", line 8, in <module>
urllib.request.urlopen("http://localhost")
File "/usr/lib/python3.1/urllib/request.py", line 121, in urlopen
File "/usr/lib/python3.1/urllib/request.py", line 350, in open
File "/usr/lib/python3.1/urllib/request.py", line 368, in _open
File "/usr/lib/python3.1/urllib/request.py", line 328, in _call_chain
File "/usr/lib/python3.1/urllib/request.py", line 1110, in http_open
File "/usr/lib/python3.1/urllib/request.py", line 1092, in do_open
File "/usr/lib/python3.1/http/client.py", line 940, in request
File "/usr/lib/python3.1/http/client.py", line 978, in _send_request
File "/usr/lib/python3.1/http/client.py", line 936, in endheaders
File "/usr/lib/python3.1/http/client.py", line 790, in _send_output
File "/usr/lib/python3.1/http/client.py", line 731, in send
File "/usr/lib/python3.1/http/client.py", line 713, in connect
File "/usr/lib/python3.1/socket.py", line 320, in create_connection
LookupError: unknown encoding: idna
Without the os.chroot line it runs ok.
Furthermore, when importing encodings.idna explicitly and before chroot-ing, any hostname refuses to resolve at all.
Script:
import os
import urllib.request
import encodings.idna
os.chroot("/tmp")
urllib.request.urlopen("http://localhost")
now terminates with the following traceback:
Traceback (most recent call last):
File "./test.py3", line 9, in <module>
urllib.request.urlopen("http://localhost")
File "/usr/lib/python3.1/urllib/request.py", line 121, in urlopen
File "/usr/lib/python3.1/urllib/request.py", line 350, in open
File "/usr/lib/python3.1/urllib/request.py", line 368, in _open
File "/usr/lib/python3.1/urllib/request.py", line 328, in _call_chain
File "/usr/lib/python3.1/urllib/request.py", line 1110, in http_open
File "/usr/lib/python3.1/urllib/request.py", line 1095, in do_open
urllib.error.URLError: <urlopen error [Errno -2] Name or service not known> |
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Date |
User |
Action |
Args |
2011-01-08 07:02:58 | ulidtko | set | recipients:
+ ulidtko |
2011-01-08 07:02:58 | ulidtko | set | messageid: <1294470178.85.0.531669703509.issue10865@psf.upfronthosting.co.za> |
2011-01-08 07:02:57 | ulidtko | link | issue10865 messages |
2011-01-08 07:02:57 | ulidtko | create | |
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