218 lines
7.7 KiB
Python
Executable File
218 lines
7.7 KiB
Python
Executable File
#!/usr/bin/env python3
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import json
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import os
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import re
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import shutil
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import socket
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import subprocess
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import time
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##
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import hvac
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import psutil
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from lxml import etree
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##
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from . import serverconf
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from . import vauptpassconf
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clientconf_file = './test.config.xml'
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_url_re = re.compile(r'^(?P<proto>https?)://(?P<addr>[^:/]+)(:(?P<port>[0-9]+)?)?(?P<path>/.*)?$')
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class VaultSpawner(object):
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client = hvac.Client()
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binary_name = 'vault' # The name of the process, not a path!
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binary_path = binary_name # Can be an absolute path; the binary Vault should be started via.
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client_conf = None
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cmd = None
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unseal = None
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is_running = None
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local = True
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pid = None
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def __init__(self, conf, genconf = True):
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self.conf = conf
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self.genconf = genconf
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self._parseConf()
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self._getCreds()
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self._connCheck()
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def _connCheck(self, bind = True):
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listener = self.conf['listener'][0]['tcp']
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addr = listener['address']
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is_not_tls = listener.get('tls_disable', False)
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url = '{0}://{1}'.format(('http' if is_not_tls else 'https'), addr)
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if not _url_re.search(url):
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raise ValueError('Invalid server address')
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self.client.url = url
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r = _url_re.search(self.client.url)
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if not r:
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raise ValueError('Invalid server URL')
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try:
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self.port = int(r.groupdict().get('port', 80))
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except ValueError:
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self.port = 80
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self.ip = socket.gethostbyname(r.groupdict()['addr'])
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sock = socket.socket()
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try:
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if bind:
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try:
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sock.bind((self.ip, self.port))
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self.pid = None
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self.is_running = False
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except OSError as e:
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if e.errno == 98:
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self.is_running = True
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elif e.errno == 99:
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# The address isn't on this box.
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self.local = False
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self.pid = None
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sock.connect((self.ip, self.port))
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sock.close()
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except (ConnectionRefusedError, ConnectionAbortedError, ConnectionResetError):
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self.is_running = False
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finally:
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try:
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sock.close()
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except NameError:
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# No idea how we got here, but...
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pass
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return(None)
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def _getClientConf(self, fpath = clientconf_file):
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clientconf = os.path.abspath(os.path.expanduser(fpath))
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self.client_conf = vauptpassconf.getConfig(clientconf)
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return(None)
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def _getCreds(self, new_unseal = None, new_auth = None, write_conf = clientconf_file):
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self._getClientConf()
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rewrite_xml = False
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# TODO: finish regen of client conf and re-parse so new elements get added to both,
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# and write out namespaced xml
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unseal_xml = self.client_conf.namespaced_xml.find('.//{0}unseal'.format(self.client_conf.xml.nsmap[None]))
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self.unseal = unseal_xml.text
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auth_xml = self.client_conf.xml.find('.//{0}auth'.format(self.client_conf.xml.nsmap[None]))
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token_xml = auth_xml.find('.//token')
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if unseal_xml is not None and not new_unseal:
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self.unseal = unseal_xml.text
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if token_xml is not None and not new_auth:
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self.client.token = token_xml.text
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if new_unseal:
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unseal_xml.getparent().replace(unseal_xml, new_unseal)
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rewrite_xml = True
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if new_auth:
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auth_xml.getparent().replace(auth_xml, new_auth)
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rewrite_xml = True
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if rewrite_xml:
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write_conf = os.path.abspath(os.path.expanduser(write_conf))
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with open(write_conf, 'w') as fh:
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fh.write() # TODO: which object?
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return(None)
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def _getProcess(self):
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def clear():
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self.pid = None
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return(None)
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self._getCreds()
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if not self.local:
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clear()
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return(None)
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processes = [p for p in psutil.process_iter() if p.name() == self.binary_name]
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if not processes:
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clear()
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return(None)
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if self.is_running:
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if len(processes) != 1 and os.geteuid() != 0:
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# Vault hides its PID in the network connections/hides its FDs,
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# so we have *no* way to get the PID as a regular user.
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raise RuntimeError('Cannot determine Vault instance to manage')
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elif len(processes) == 1:
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self.pid = self.processes[0].pid
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else:
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# We're running as root.
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conns = [c for c in psutil.net_connections() if c.laddr.ip == ip and c.laddr.port == port]
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if not len(conns) == 1:
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# This, theoretically, should never happen.
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raise RuntimeError('Cannot determine Vault instance to manage')
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else:
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self.pid = conns[0].pid
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return(None)
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return(None)
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def _initChk(self):
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self._getClientConf()
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self._connCheck()
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if not self.is_running:
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return(False)
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if not self.client.sys.is_initialized():
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init_rslt = self.client.sys.initialize(secret_shares = 1, secret_threshold = 1)
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self.unseal = init_rslt['keys_base64'][0]
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self.client.token = init_rslt['root_token']
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newauth = etree.Element('auth')
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newtoken = etree.Element('token')
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newtoken.text = self.client.token
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newauth.append(newtoken)
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newunseal = etree.Element('unseal')
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newunseal.text = self.unseal
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self._getCreds(new_auth = newauth, new_unseal = newunseal)
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if self.client.sys.is_sealed():
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self.client.sys.submit_unseal_key(self.unseal)
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return(True)
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def _parseConf(self):
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is_hcl = False
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rawconf = None
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if not self.conf:
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if os.path.isfile(serverconf.conf_file):
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self.conf = serverconf.conf_file
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else:
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# Use the default.
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self.genconf = True
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self.conf = serverconf.default_conf
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elif not isinstance(self.conf, dict):
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# Assume it's a file.
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self.conf = os.path.abspath(os.path.expanduser(self.conf))
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with open(self.conf, 'r') as fh:
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rawconf = fh.read()
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try:
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self.conf = json.loads(rawconf)
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except json.decoder.JSONDecodeError:
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is_hcl = True # It's probably HCL.
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if is_hcl:
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self.conf = serverconf.parseHCL(rawconf)
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if self.genconf:
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serverconf.genConf(confdict = self.conf)
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return(None)
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def start(self):
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self._getProcess()
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if self.is_running:
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# Already started.
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self._initChk()
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return(None)
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if not self.local:
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# It's a remote address
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self._initChk()
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return(None)
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cmd_str = [self.binary_path, 'server']
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cmd_str.extend(['-config', serverconf.conf_file])
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# We have to use Popen because even vault server doesn't daemonize.
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# Gorram it, HashiCorp.
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self.cmd = subprocess.Popen(cmd_str, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
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if self.cmd.returncode != 0:
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print('STDERR:\n{0}'.format(self.cmd.stderr.decode('utf-8')))
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raise RuntimeError('Vault did not start correctly')
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attempts = 5
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seconds = 3
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while not self.is_running and attempts != 0:
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self._connCheck()
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time.sleep(seconds)
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if not self.is_running:
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raise TimeoutError('Could not start Vault')
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self._initChk()
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return(None)
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