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sshtunnel: parse ProxyJump #249

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sshtunnel: parse ProxyJump #249

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16 changes: 14 additions & 2 deletions sshtunnel.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1004,7 +1004,8 @@ def _read_ssh_config(ssh_host,
# Try to read SSH_CONFIG_FILE
try:
# open the ssh config file
with open(os.path.expanduser(ssh_config_file), 'r') as f:
config_path = os.path.expanduser(ssh_config_file)
with open(config_path, 'r') as f:
ssh_config.parse(f)
# looks for information for the destination system
hostname_info = ssh_config.lookup(ssh_host)
Expand All @@ -1021,7 +1022,18 @@ def _read_ssh_config(ssh_host,
ssh_host = hostname_info.get('hostname')
ssh_port = ssh_port or hostname_info.get('port')

proxycommand = hostname_info.get('proxycommand')
proxycommand = hostname_info.get("proxycommand")
if not proxycommand and "proxyjump" in hostname_info:
hops = list(reversed(hostname_info["proxyjump"].split(",")))
if len(hops) > 1:
raise ValueError(
"ProxyJump with more than one proxy server is not supported."
)
# -F forces the continued use of the same SSH config file
proxycommand = "ssh {} -F {} -W {}:{}".format(
hops[0], os.path.abspath(config_path), ssh_host, ssh_port
)

ssh_proxy = ssh_proxy or (paramiko.ProxyCommand(proxycommand) if
proxycommand else None)
if compression is None:
Expand Down