def _GetSharedSshArgs(args, user, instance, ip_address, env, keys):
"""Returns list with ssh commands and shared arguments it."""
ssh_args = [env.ssh]
if not args.plain:
ssh_args.extend(ssh.GetDefaultFlags(keys.key_file))
# Allocates a tty if no command was provided and a container was provided.
if args.container and not args.command:
ssh_args.append('-t')
if args.ssh_flag:
for flag in args.ssh_flag:
for flag_part in flag.split(): # We want grouping here
dereferenced_flag = (flag_part.replace('%USER%', user).replace(
'%INSTANCE%', ip_address))
ssh_args.append(dereferenced_flag)
host_key_alias = HostKeyAlias(instance)
ssh_args.extend(
ssh.GetHostKeyArgs(host_key_alias, args.plain,
args.strict_host_key_checking))
ssh_args.append(ssh.UserHost(user, ip_address))
return ssh_args
def Run(self, args):
super(SshGA, self).Run(args)
user, instance_name = ssh_utils.GetUserAndInstance(
args.user_host, self._use_accounts_service, self.http)
instance_ref = instance_flags.SSH_INSTANCE_RESOLVER.ResolveResources(
[instance_name],
compute_scope.ScopeEnum.ZONE,
args.zone,
self.resources,
scope_lister=flags.GetDefaultScopeLister(self.compute_client))[0]
instance = self.GetInstance(instance_ref)
external_ip_address = ssh_utils.GetExternalIPAddress(instance)
ssh_args = [self.env.ssh]
if not args.plain:
ssh_args.extend(ssh.GetDefaultFlags(self.keys.key_file))
# Allocates a tty if no command was provided and a container was provided.
if args.container and not args.command:
ssh_args.append('-t')
if args.ssh_flag:
for flag in args.ssh_flag:
for flag_part in flag.split(): # We want grouping here
dereferenced_flag = (flag_part.replace(
'%USER%', user).replace('%INSTANCE%',
external_ip_address))
ssh_args.append(dereferenced_flag)
host_key_alias = ssh_utils.HostKeyAlias(instance)
ssh_args.extend(
ssh.GetHostKeyArgs(host_key_alias, args.plain,
args.strict_host_key_checking))
ssh_args.append(ssh.UserHost(user, external_ip_address))
if args.ssh_args:
ssh_args.extend(args.ssh_args)
if args.container:
ssh_args.append('--')
ssh_args.append('container_exec')
ssh_args.append(args.container)
# Runs the given command inside the given container if --command was
# specified, otherwise runs /bin/sh.
if args.command:
ssh_args.append(args.command)
else:
ssh_args.append('/bin/sh')
elif args.command:
if not platforms.OperatingSystem.IsWindows():
ssh_args.append('--')
ssh_args.append(args.command)
# Don't use strict error checking for ssh: if the executed command fails, we
# don't want to consider it an error. We do, however, want to propagate its
# return code.
return_code = self.ActuallyRun(
args,
ssh_args,
user,
instance,
instance_ref.project,
external_ip_address,
strict_error_checking=False,
use_account_service=self._use_accounts_service)
if return_code:
# Can't raise an exception because we don't want any "ERROR" message
# printed; the output from `ssh` will be enough.
sys.exit(return_code)
def Run(self, args):
super(CopyFiles, self).Run(args)
# TODO(b/33467618): Change this implementation to use ssh.SCPCommand and
# ssh.FileReference objects.
file_specs = []
# Parses the positional arguments.
for arg in args.sources + [args.destination]:
if ssh.IsScpLocalPath(arg):
file_specs.append(LocalFile(arg))
else:
user_host, file_path = arg.split(':', 1)
user_host_parts = user_host.split('@', 1)
if len(user_host_parts) == 1:
user = ssh.GetDefaultSshUsername(warn_on_account_user=True)
source_instance = user_host_parts[0]
else:
user, source_instance = user_host_parts
file_specs.append(RemoteFile(user, source_instance, file_path))
log.debug('Normalized arguments: %s', file_specs)
# Validates the positional arguments.
# TODO(user): Look into relaxing these conditions.
sources = file_specs[:-1]
destination = file_specs[-1]
if isinstance(destination, LocalFile):
for source in sources:
if isinstance(source, LocalFile):
raise exceptions.ToolException(
'All sources must be remote files when the destination '
'is local.')
else: # RemoteFile
for source in sources:
if isinstance(source, RemoteFile):
raise exceptions.ToolException(
'All sources must be local files when the destination '
'is remote.')
destination_instances = set()
for file_spec in file_specs:
if isinstance(file_spec, RemoteFile):
destination_instances.add(file_spec.instance_name)
if len(destination_instances) > 1:
raise exceptions.ToolException(
'Copies must involve exactly one virtual machine instance; '
'your invocation refers to [{0}] instances: [{1}].'.format(
len(destination_instances),
', '.join(sorted(destination_instances))))
source_instance_ref = instance_flags.SSH_INSTANCE_RESOLVER.ResolveResources(
[source_instance],
compute_scope.ScopeEnum.ZONE,
args.zone,
self.resources,
scope_lister=flags.GetDefaultScopeLister(self.compute_client,
self.project))[0]
source_instance = self.GetInstance(source_instance_ref)
external_ip_address = ssh_utils.GetExternalIPAddress(source_instance)
# Builds the scp command.
scp_args = [self.env.scp]
if not args.plain:
scp_args.extend(ssh.GetDefaultFlags(self.keys.key_file))
host_key_alias = self.HostKeyAlias(source_instance)
scp_args.extend(
ssh.GetHostKeyArgs(host_key_alias, args.plain,
args.strict_host_key_checking))
scp_args.append('-r')
for file_spec in file_specs:
if isinstance(file_spec, LocalFile):
scp_args.append(file_spec.file_path)
else:
scp_args.append('{0}:{1}'.format(
ssh.UserHost(file_spec.user, external_ip_address),
file_spec.file_path))
self.ActuallyRun(args, scp_args, user, source_instance,
source_instance_ref.project)
def Run(self, args):
super(ConnectToSerialPort, self).Run(args)
parts = args.user_host.split('@')
if len(parts) == 1:
user = getpass.getuser()
instance = parts[0]
elif len(parts) == 2:
user, instance = parts
else:
raise exceptions.ToolException(
'Expected argument of the form [USER@]INSTANCE; received [{0}].'
.format(args.user_host))
# Update google_compute_known_hosts file with published host key
if args.serial_port_gateway == SERIAL_PORT_GATEWAY:
http_client = http.Http()
http_response = http_client.request(HOST_KEY_URL)
hostname = '[{0}]:{1}'.format(SERIAL_PORT_GATEWAY, CONNECTION_PORT)
known_hosts = ssh.KnownHosts.FromDefaultFile()
if http_response[0]['status'] == '200':
host_key = http_response[1].strip()
known_hosts.Add(hostname, host_key, overwrite=True)
known_hosts.Write()
elif known_hosts.ContainsAlias(hostname):
log.warn('Unable to download and update Host Key for [{0}] from [{1}]. '
'Attempting to connect using existing Host Key in [{2}]. If '
'the connection fails, please try again to update the Host '
'Key.'.format(SERIAL_PORT_GATEWAY, HOST_KEY_URL,
known_hosts.file_path))
else:
known_hosts.Add(hostname, DEFAULT_HOST_KEY)
known_hosts.Write()
log.warn('Unable to download Host Key for [{0}] from [{1}]. To ensure '
'the security of the SSH connetion, gcloud will attempt to '
'connect using a hard-coded Host Key value. If the connection '
'fails, please try again. If the problem persists, try '
'updating gcloud and connecting again.'
.format(SERIAL_PORT_GATEWAY, HOST_KEY_URL))
instance_ref = instance_flags.SSH_INSTANCE_RESOLVER.ResolveResources(
[instance], compute_scope.ScopeEnum.ZONE, args.zone, self.resources,
scope_lister=flags.GetDefaultScopeLister(
self.compute_client, self.project))[0]
instance = self.GetInstance(instance_ref)
ssh_args = [self.env.ssh]
ssh_args.extend(ssh.GetDefaultFlags(self.keys.key_file))
if args.serial_port_gateway == SERIAL_PORT_GATEWAY:
ssh_args.extend(['-o', 'StrictHostKeyChecking=yes'])
ssh_args.extend(['-p', CONNECTION_PORT])
if args.port:
port = 'port={0}'.format(args.port)
else:
port = 'port=1'
constructed_username_list = [instance_ref.project, instance_ref.zone,
instance_ref.Name(), user, port]
if args.extra_args:
for k, v in args.extra_args.items():
constructed_username_list.append('{0}={1}'.format(k, v))
ssh_args.append(ssh.UserHost('.'.join(constructed_username_list),
args.serial_port_gateway))
log.info('ssh command: {0}'.format(' '.join(ssh_args)))
# Don't wait for the instance to become SSHable. We are not connecting to
# the instance itself through SSH, so the instance doesn't need to have
# fully booted to connect to the serial port. Also, ignore exit code 255,
# since the normal way to terminate the serial port connection is ~. and
# that causes ssh to exit with 255.
return_code = self.ActuallyRun(
args, ssh_args, user, instance, instance_ref.project,
strict_error_checking=False, use_account_service=False,
wait_for_sshable=False, ignore_ssh_errors=True)
if return_code:
sys.exit(return_code)
