[scponly] scp blues

[Daniel Webb]

On Thu, Mar 16, 2006 at 02:18:31AM -0700, Daniel Webb wrote:

> By the way, the "invalid pointer" message still comes up any time I try to
> execute a command that's not allowed:
> 
> ----
> Command '<something>' failed with return code 0 and error message 
> free(): invalid pointer 0x804dae0!
> ----
> 
> Normally, trying to free invalid pointers is a bad thing.  Am I the only one
> seeing this?

Some more info, with debug.  From WinSCP when I try to open a "command window":

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Command 'groups' failed with return code -1 and error message 
free(): invalid pointer 0x804dae0!
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Command 'pwd' failed with return code 0 and error message 
free(): invalid pointer 0x804dae0!
----

I don't see anything at all in syslog.  If I turn up debuglevel to 6 (which I
picked out of the blue), and try at a Linux shell:

ssh -v -p 10006 bobo at localhost groups

(I have ssh only listening on 10006 for this user) I get:

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<snip>

Password:
debug1: Authentication succeeded (keyboard-interactive).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: Sending command: groups
scponly[544]: chrooted binary in place, will chroot()
scponly[544]: 3 arguments in total.
scponly[544]:   arg 0 is scponlyc
scponly[544]:   arg 1 is -c
scponly[544]:   arg 2 is groups
scponly[544]: opened log at LOG_AUTHPRIV, opts 0x00000029
scponly[544]: retrieved home directory of "/home/sbs/store000/bobo//home/main"
for user "bobo"
scponly[544]: chrooting to dir: "/home/sbs/store000/bobo"
scponly[544]: chdiring to dir: "/home/main"
scponly[544]: setting uid to 1019
scponly[544]: processing request: "groups"
scponly[544]: Unable to find "LOG_SFTP" in the environment
scponly[544]: Found "USER" and setting it to "bobo"
scponly[544]: Unable to find "SFTP_UMASK" in the environment
scponly[544]: Unable to find "SFTP_PERMIT_CHMOD" in the environment
scponly[544]: Unable to find "SFTP_PERMIT_CHOWN" in the environment
scponly[544]: Unable to find "SFTP_LOG_LEVEL" in the environment
scponly[544]: Unable to find "SFTP_LOG_FACILITY" in the environment
scponly[544]: Found "HOME" and setting it to
"/home/sbs/store000/bobo//home/main"
scponly[544]: Environment contains "USER=bobo"
scponly[544]: Environment contains "HOME=/home/sbs/store000/bobo//home/main"
scponly[544]: set HOME environment variable to / username: bobo(1019),
IP/port: ::ffff:127.0.0.14925 10006
scponly[544]: running: /usr/bin/groups (username: bobo(1019), IP/port:
::ffff:127.0.0.1 4925 10006)
scponly[544]: failed: /usr/bin/groups with error No such file or directory(2)
(username: bobo(1019), IP/port: ::ffff:127.0.0.1 4925 10006)
free(): invalid pointer 0x804dae0!
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: channel 0: free: client-session, nchannels 1
debug1: Transferred: stdin 0, stdout 0, stderr 0 bytes in 0.1 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.0
debug1: Exit status 2
----