Re: supplying password to subprocess.call('rsync ...'), os.system('rsync ...')

2007-10-09 Thread timw.google
On Oct 7, 1:01 pm, Michael Torrie [EMAIL PROTECTED] wrote:
 timw.google wrote:
  Hi

  I want to write a python script that runs rsync on a given directory
  and host. I build the command line string, but when I try to run
  subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
  os.system(cmd), I get prompted for my login password. I expected this,
  but when I try to give my password, it's echoed back to the terminal
  and the special characters in the password is (I think) getting
  interpreted by the shell (zsh)

  I can't ssh w/o supplying a password. That's the way the security is
  set up here.

  How do I use python to do this, or do I just have to write a zsh
  script?

 You need to use the pexpect module.



  Thanks.

Thanks to all the suggestions on getting this to work w/ python. I'll
look into this more when I get the chance. I don't have root access,
so setting up some kind of server is out. I may not be able to try the
other suggestions either, as they have things locked down pretty tight
around here.

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Re: supplying password to subprocess.call('rsync ...'), os.system('rsync ...')

2007-10-07 Thread David
On 10/5/07, timw.google [EMAIL PROTECTED] wrote:
 Hi

 I want to write a python script that runs rsync on a given directory
 and host. I build the command line string, but when I try to run
 subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
 os.system(cmd), I get prompted for my login password. I expected this,
 but when I try to give my password, it's echoed back to the terminal
 and the special characters in the password is (I think) getting
 interpreted by the shell (zsh)

 I can't ssh w/o supplying a password. That's the way the security is
 set up here.

 How do I use python to do this, or do I just have to write a zsh
 script?


SSH takes measures to ensure that passwords are typed from a keyboard
(pty) rather than being piped in automatically (stdin).

If SSH public key authentication (see ssh-keygen) doesn't work for
you, then try ssh agent (see, ssh-add), sshpass, or something like
empty-expect.

If you use ssh public keys, you can also setup the public key so that
only a specified command can be run, and that the public key can only
be used from a specific host. This is more secure. See this page for
more info: http://troy.jdmz.net/rsync/index.html

Otherwise you may need to do some pty-hackery in python to fool ssh
into thinking it's password is being entered from a keyboard and not a
script. However, you should try public key authentication (with rsync
as the only allowed command) first.

Another method is to setup an ssh service on the server (perhaps in
inetd). One disadvantage of this is that the rsync session (including
rsync login passwords) is not encrypted.
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Re: supplying password to subprocess.call('rsync ...'), os.system('rsync ...')

2007-10-07 Thread David
Typo.

 Another method is to setup an ssh service on the server (perhaps in

Should be:

 Another method is to setup an rsync service on the server (perhaps in
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Re: supplying password to subprocess.call('rsync ...'), os.system('rsync ...')

2007-10-07 Thread Michael Torrie
timw.google wrote:
 Hi
 
 I want to write a python script that runs rsync on a given directory
 and host. I build the command line string, but when I try to run
 subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
 os.system(cmd), I get prompted for my login password. I expected this,
 but when I try to give my password, it's echoed back to the terminal
 and the special characters in the password is (I think) getting
 interpreted by the shell (zsh)
 
 I can't ssh w/o supplying a password. That's the way the security is
 set up here.
 
 How do I use python to do this, or do I just have to write a zsh
 script?

You need to use the pexpect module.

 
 Thanks.
 

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Re: supplying password to subprocess.call('rsync ...'), os.system('rsync ...')

2007-10-07 Thread Nicholas Bastin
On 05 Oct 2007 16:23:50 GMT, Stargaming [EMAIL PROTECTED] wrote:
 On Fri, 05 Oct 2007 08:37:05 -0700, timw.google wrote:
  I can't ssh w/o supplying a password. That's the way the security is
  set up here.
 
  How do I use python to do this, or do I just have to write a zsh
  script?
 
  Thanks.
 
  I wrote a zsh script to do what I wanted, but I'd still like to know how
  to do it in Python.

 `subprocess.Popen` has a keyword argument called `stdin` -- what takes
 the password, I guess. Assigning `subprocess.PIPE` to it and using
 `Popen.communicate` should do the trick.

SSH doesn't read passwords off of stdin.  If you want to supply a
password to SSH, then you need to control a pty directly.

--
Nick
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Re: supplying password to subprocess.call('rsync ...'), os.system('rsync ...')

2007-10-06 Thread Lawrence D'Oliveiro
In message [EMAIL PROTECTED],
timw.google wrote:

 I want to write a python script that runs rsync on a given directory
 and host. I build the command line string, but when I try to run
 subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
 os.system(cmd), I get prompted for my login password.

Why not set up a public/private SSH key pair between the accounts on the two
machines? Then you can get in without a password.

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supplying password to subprocess.call('rsync ...'), os.system('rsync ...')

2007-10-05 Thread timw.google
Hi

I want to write a python script that runs rsync on a given directory
and host. I build the command line string, but when I try to run
subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
os.system(cmd), I get prompted for my login password. I expected this,
but when I try to give my password, it's echoed back to the terminal
and the special characters in the password is (I think) getting
interpreted by the shell (zsh)

I can't ssh w/o supplying a password. That's the way the security is
set up here.

How do I use python to do this, or do I just have to write a zsh
script?

Thanks.

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Re: supplying password to subprocess.call('rsync ...'), os.system('rsync ...')

2007-10-05 Thread timw.google
On Oct 5, 10:33 am, timw.google [EMAIL PROTECTED] wrote:
 Hi

 I want to write a python script that runs rsync on a given directory
 and host. I build the command line string, but when I try to run
 subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
 os.system(cmd), I get prompted for my login password. I expected this,
 but when I try to give my password, it's echoed back to the terminal
 and the special characters in the password is (I think) getting
 interpreted by the shell (zsh)

 I can't ssh w/o supplying a password. That's the way the security is
 set up here.

 How do I use python to do this, or do I just have to write a zsh
 script?

 Thanks.

I wrote a zsh script to do what I wanted, but I'd still like to know
how to do it in Python.

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http://mail.python.org/mailman/listinfo/python-list


Re: supplying password to subprocess.call('rsync ...'), os.system('rsync ...')

2007-10-05 Thread Stargaming
On Fri, 05 Oct 2007 08:37:05 -0700, timw.google wrote:

 On Oct 5, 10:33 am, timw.google [EMAIL PROTECTED] wrote:
 Hi

 I want to write a python script that runs rsync on a given directory
 and host. I build the command line string, but when I try to run
 subprocess.call(cmd), or p=subprocess.Popen(cmd, shell=True),or
 os.system(cmd), I get prompted for my login password. I expected this,
 but when I try to give my password, it's echoed back to the terminal
 and the special characters in the password is (I think) getting
 interpreted by the shell (zsh)

 I can't ssh w/o supplying a password. That's the way the security is
 set up here.

 How do I use python to do this, or do I just have to write a zsh
 script?

 Thanks.
 
 I wrote a zsh script to do what I wanted, but I'd still like to know how
 to do it in Python.

`subprocess.Popen` has a keyword argument called `stdin` -- what takes 
the password, I guess. Assigning `subprocess.PIPE` to it and using 
`Popen.communicate` should do the trick. 

Check the documentation at http://docs.python.org/lib/module-
subprocess.html for details.

Cheers,
Stargaming
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