To verify that the sftp server is actually running, responsive and that
all curl's tests generated configuration and key files are fine, a real
connection is established to the test harness s

To verify that the sftp server is actually running, responsive and that
all curl's tests generated configuration and key files are fine, a real
connection is established to the test harness sftp server authenticating
and running a simple sftp remote pwd command.

The verification is done using OpenSSH's or SunSSH's sftp client tool with
a configuration file with the same options as the test harness socks server
with the exception that dynamic forwarding is not used for sftp.

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When possible, use additional config options for test harness ssh server,
which are deprecated in recent OpenSSH versions but are current for SunSSH.

Dont rely on PAMAuthenticationViaKbdInt default being 'no'

Also disable GSSAPIAuthentication for the test harness ssh client

Remove hardcoded verbosity

Temporary change to help debugging SSH server verification failures

Remove increased loglevel intended to debug autobuild's publickey
authentication failures when using OpenSSH 2.9.9 or SunSSH.

Verified fact: Even when only using publickey authentication

Remove increased loglevel intended to debug autobuild's publickey
authentication failures when using OpenSSH 2.9.9 or SunSSH.

Verified fact: Even when only using publickey authentication,
OpenSSH and SunSSH first validate the user, this implies that
if the user validation fails, 'invalid user', the publickey
authentication will not be allowed to complete.

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Increase loglevel to debug autobuild's publickey authentication
failures when using OpenSSH 2.9.9 or SunSSH

Increase MaxAuthTries from 0 to 10. Using a value of 0 is too restrictive

'ControlPath' ssh client configuration file option requires OpenSSH 4.2 or
later to accept 'none' as an indication to disable connection multiplexing

SunSSH 1.1 ssh client does not support config file options:

ConnectTimeout
ForwardX11Trusted
HashKnownHosts
RekeyLimit
ServerAliveCountMax
ServerAliveInterval

'LocalCommand' no longer used for ssh client config file. When used it
requires a non blank argument.

Modify test harness so that the minimum SSH version required to run
SCP, SFTP and SOCKS4 tests is now OpenSSH 2.9.9 or SunSSH 1.0

For SOCKS5 tests minimum versions are OpenSSH 3.7 or Sun

Modify test harness so that the minimum SSH version required to run
SCP, SFTP and SOCKS4 tests is now OpenSSH 2.9.9 or SunSSH 1.0

For SOCKS5 tests minimum versions are OpenSSH 3.7 or SunSSH 1.0

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Use getcwd() to get the directory, which works even if one of the directory
components doesn't have read permission set.

To allow remote log inspection avoid redirecting messages to stderr.
Cleanup some debugging messages. Unlink log file on exit.

ConnectTimeout requires OpenSSH 3.7 or later

Explicitly disallow remote hosts to connect to local forwarded ports,
the socks server port in the test suite. This is the default setting
unless a tinkered built ssh is being used.

Temporary change to better debug startup failures
of test suite ssh and socks servers.

Don't gather additional debug info unless sshd actually fails

Improve detection of sshd un/supported options.

Gather additional debug info when the test suite ssh server fails to start.

This is a temporary change to test if OpenSSH 3.6 and SunSSH 1.1
are good/compatible enough to run the test suite ssh server and
socks tests

Temporary change to help debugging string(s) returned by sshd -V
when sshd is not being identified as an OpenSSH daemon

Add /opt/ssh/sbin and /opt/ssh/libexec to the sshd locations search list.

Improve wording of a couple of debug messages.

When unable to start test suite sshserver, log if OpenSSH has not been
found or the OpenSSH version found

Add /usr/local/sbin and /usr/freeware/bin to the sshd locations search list