New submission from Jonathan <bugrepo...@lightpear.com>:
Using Python 3.6.3.
The below issue only happens with FTP_TLS. It works fine via a plain FTP
connection.
I am connecting to an FTP to using `ftplib` via FTP_TLS.
ftps = ftplib.FTP_TLS('example.com', timeout=5)
# TLS is more secure than SSL
ftps.ssl_version = ssl.PROTOCOL_TLS
# login before securing control channel
ftps.login('usern...@example.com', 'password')
# switch to secure data connection
ftps.prot_p()
# Explicitly set Passive mode
ftps.set_pasv(True)
This all works. I can send `ftps.mkd('mydir')` (make directory) and
`ftps.cwd('mydir')` (change working dir), and both work fine.
But if I send **any** of these (they're all basically synonyms as far as I can
tell):
ftps.dir()
ftps.nlst()
ftps.retrlines('LIST')
ftps.retrlines('MLSD')
Then I get back an exception (below also includes all ftplib debug info as
well; generally matches up with what FileZilla shows too):
*cmd* 'AUTH TLS'
*put* 'AUTH TLS\r\n'
*get* '234 AUTH TLS OK.\n'
*resp* '234 AUTH TLS OK.'
*cmd* 'USER usern...@example.com'
*put* 'USER usern...@example.com\r\n'
*get* '331 User usern...@example.com OK. Password required\n'
*resp* '331 User usern...@example.com OK. Password required'
*cmd* 'PASS ******************************'
*put* 'PASS ******************************\r\n'
*get* '230 OK. Current restricted directory is /\n'
*resp* '230 OK. Current restricted directory is /'
*cmd* 'PBSZ 0'
*put* 'PBSZ 0\r\n'
*get* '200 PBSZ=0\n'
*resp* '200 PBSZ=0'
*cmd* 'PROT P'
*put* 'PROT P\r\n'
*get* '200 Data protection level set to "private"\n'
*resp* '200 Data protection level set to "private"'
*cmd* 'MKD mydir'
*put* 'MKD mydir\r\n'
*get* '257 "mydir" : The directory was successfully created\n'
*resp* '257 "mydir" : The directory was successfully created'
*cmd* 'CWD mydir'
*put* 'CWD mydir\r\n'
*get* '250 OK. Current directory is /mydir\n'
*resp* '250 OK. Current directory is /mydir'
*cmd* 'TYPE A'
*put* 'TYPE A\r\n'
*get* '200 TYPE is now ASCII\n'
*resp* '200 TYPE is now ASCII'
*cmd* 'PASV'
*put* 'PASV\r\n'
*get* '227 Entering Passive Mode (8,8,8,8,8,8)\n'
*resp* '227 Entering Passive Mode (8,8,8,8,8,8)'
*cmd* 'MLSD'
*put* 'MLSD\r\n'
*get* '150 Accepted data connection\n'
*resp* '150 Accepted data connection'
Traceback (most recent call last):
File "c:\my_script.py", line 384, in run_ftps
ftps.retrlines('MLSD')
File "c:\libs\Python36\lib\ftplib.py", line 485, in retrlines
conn.unwrap()
File "C:\libs\Python36\lib\ssl.py", line 1051, in unwrap
s = self._sslobj.unwrap()
File "C:\libs\Python36\lib\ssl.py", line 698, in unwrap
return self._sslobj.shutdown()
OSError: [Errno 0] Error
The same FTP command (LIST) works fine via filezilla.
The closest thing I can find with googling is this:
https://bugs.python.org/msg253161 - and I'm not sure if it's related or
relevant.
Short version: What does "OSError: [Errno 0] Error" actually mean, and how do I
list my directory contents?
----------
messages: 303914
nosy: jonathan-lp
priority: normal
severity: normal
status: open
title: FTP_TLS errors when
versions: Python 3.6
_______________________________________
Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue31727>
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