On 10/4/22 00:36, Norm Green wrote:
Hello libssh list,
If I run a command over ssh that fails from the Linux command line:
normg@moop>ssh hood foo
bash: foo: command not found
normg@moop>echo $?
127
I get an error string ("bash: foo: command not found") and an error code
(127). For example:
My question is how to do the equivalent with libssh ?
If I do this after opening a session and a channel:
int rc = ssh_channel_request_exec(sshChannel, "foo");
int bytesReady = ssh_channel_poll_timeout(sshChannel, timeout, FALSE);
returns -127 and:
int numRead = ssh_channel_read_timeout(sshChannel,
resultBuffer.nextWriteByte(),
(int) resultBuffer.bytesFree(),
0, // timeout: block in poll, not here
0);
returns 0, so I don't get the error string back from libssh.
How can I get the error string result from the failed command using
libssh ?
I think you need to set the `is_stderr` argument of the
`ssh_channel_read_timeout()` to true to get this message as it will most
likely be on the standard error instead of standard output you are querying.
Regards,
--
Jakub Jelen
Crypto Team, Security Engineering
Red Hat, Inc.
