mirror of https://github.com/openspug/spug
214 lines
7.3 KiB
Python
214 lines
7.3 KiB
Python
# Copyright: (c) OpenSpug Organization. https://github.com/openspug/spug
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# Copyright: (c) <spug.dev@gmail.com>
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# Released under the AGPL-3.0 License.
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from paramiko.client import SSHClient, AutoAddPolicy
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from paramiko.rsakey import RSAKey
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from paramiko.ssh_exception import AuthenticationException
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from io import StringIO
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import base64
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import time
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import re
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class SSH:
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def __init__(self, hostname, port=22, username='root', pkey=None, password=None, default_env=None,
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connect_timeout=10):
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self.stdout = None
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self.client = None
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self.channel = None
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self.sftp = None
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self.eof = 'Spug EOF 2108111926'
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self.already_init = False
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self.default_env = self._make_env_command(default_env)
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self.regex = re.compile(r'Spug EOF 2108111926 (-?\d+)[\r\n]?')
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self.arguments = {
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'hostname': hostname,
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'port': port,
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'username': username,
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'password': password,
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'pkey': RSAKey.from_private_key(StringIO(pkey)) if isinstance(pkey, str) else pkey,
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'timeout': connect_timeout,
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'banner_timeout': 30
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}
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@staticmethod
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def generate_key():
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key_obj = StringIO()
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key = RSAKey.generate(2048)
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key.write_private_key(key_obj)
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return key_obj.getvalue(), 'ssh-rsa ' + key.get_base64()
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def get_client(self):
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if self.client is not None:
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return self.client
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self.client = SSHClient()
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self.client.set_missing_host_key_policy(AutoAddPolicy)
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self.client.connect(**self.arguments)
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return self.client
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def ping(self):
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return True
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def add_public_key(self, public_key):
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command = f'mkdir -p -m 700 ~/.ssh && \
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echo {public_key!r} >> ~/.ssh/authorized_keys && \
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chmod 600 ~/.ssh/authorized_keys'
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exit_code, out = self.exec_command_raw(command)
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if exit_code != 0:
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raise Exception(f'add public key error: {out}')
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def exec_command_raw(self, command, environment=None):
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channel = self.client.get_transport().open_session()
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if environment:
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channel.update_environment(environment)
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channel.set_combine_stderr(True)
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channel.exec_command(command)
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code, output = channel.recv_exit_status(), channel.recv(-1)
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return code, self._decode(output)
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def exec_command(self, command, environment=None):
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channel = self._get_channel()
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command = self._handle_command(command, environment)
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channel.send(command)
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out, exit_code = '', -1
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for line in self.stdout:
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match = self.regex.search(line)
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if match:
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exit_code = int(match.group(1))
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line = line[:match.start()]
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out += line
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break
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out += line
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return exit_code, out
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def _win_exec_command_with_stream(self, command, environment=None):
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channel = self.client.get_transport().open_session()
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if environment:
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channel.update_environment(environment)
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channel.set_combine_stderr(True)
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channel.get_pty(width=102)
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channel.exec_command(command)
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stdout = channel.makefile("rb", -1)
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out = stdout.readline()
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while out:
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yield channel.exit_status, self._decode(out)
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out = stdout.readline()
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yield channel.recv_exit_status(), self._decode(out)
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def exec_command_with_stream(self, command, environment=None):
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channel = self._get_channel()
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command = self._handle_command(command, environment)
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channel.send(command)
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exit_code, line = -1, ''
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while True:
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line = self._decode(channel.recv(8196))
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if not line:
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break
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match = self.regex.search(line)
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if match:
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exit_code = int(match.group(1))
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line = line[:match.start()]
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break
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yield exit_code, line
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yield exit_code, line
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def put_file(self, local_path, remote_path):
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sftp = self._get_sftp()
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sftp.put(local_path, remote_path)
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def put_file_by_fl(self, fl, remote_path, callback=None):
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sftp = self._get_sftp()
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sftp.putfo(fl, remote_path, callback=callback)
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def list_dir_attr(self, path):
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sftp = self._get_sftp()
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return sftp.listdir_attr(path)
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def sftp_stat(self, path):
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sftp = self._get_sftp()
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return sftp.stat(path)
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def remove_file(self, path):
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sftp = self._get_sftp()
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sftp.remove(path)
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def _get_channel(self):
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if self.channel:
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return self.channel
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counter = 0
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self.channel = self.client.invoke_shell()
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command = 'set +o zle\nset -o no_nomatch\nexport PS1= && stty -echo\n'
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if self.default_env:
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command += f'{self.default_env}\n'
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command += f'echo {self.eof} $?\n'
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self.channel.send(command.encode())
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while True:
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if self.channel.recv_ready():
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line = self._decode(self.channel.recv(8196))
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if self.regex.search(line):
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self.stdout = self.channel.makefile('r')
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break
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elif counter >= 100:
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self.client.close()
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raise Exception('Wait spug response timeout')
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else:
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counter += 1
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time.sleep(0.1)
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return self.channel
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def _get_sftp(self):
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if self.sftp:
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return self.sftp
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self.sftp = self.client.open_sftp()
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return self.sftp
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def _make_env_command(self, environment):
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if not environment:
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return None
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str_envs = []
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for k, v in environment.items():
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k = k.replace('-', '_')
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if isinstance(v, str):
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v = v.replace("'", "'\"'\"'")
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str_envs.append(f"{k}='{v}'")
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str_envs = ' '.join(str_envs)
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return f'export {str_envs}'
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def _handle_command(self, command, environment):
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new_command = commands = ''
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if not self.already_init:
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commands = 'export SPUG_EXEC_FILE=$(mktemp)\n'
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commands += 'trap \'rm -f $SPUG_EXEC_FILE\' EXIT\n'
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self.already_init = True
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env_command = self._make_env_command(environment)
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if env_command:
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new_command += f'{env_command}\n'
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new_command += command
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new_command += f'\necho {self.eof} $?\n'
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b64_command = base64.standard_b64encode(new_command.encode())
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commands += f'echo {b64_command.decode()} | base64 -di > $SPUG_EXEC_FILE\n'
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commands += 'source $SPUG_EXEC_FILE\n'
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return commands
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def _decode(self, content):
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try:
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content = content.decode()
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except UnicodeDecodeError:
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content = content.decode(encoding='GBK', errors='ignore')
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return content
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def __enter__(self):
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self.get_client()
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transport = self.client.get_transport()
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if 'windows' in transport.remote_version.lower():
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self.exec_command = self.exec_command_raw
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self.exec_command_with_stream = self._win_exec_command_with_stream
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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self.client.close()
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self.client = None
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