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import os, json, hashlib, shlex, sys
import time, pty
from datetime import datetime, date
from subprocess import Popen, STDOUT, PIPE, check_output
from select import epoll, EPOLLIN, EPOLLHUP
from .exceptions import *
from .output import log, LOG_LEVELS
def gen_uid(entropy_length=256):
return hashlib.sha512(os.urandom(entropy_length)).hexdigest()
def multisplit(s, splitters):
s = [s,]
for key in splitters:
ns = []
for obj in s:
x = obj.split(key)
for index, part in enumerate(x):
if len(part):
ns.append(part)
if index < len(x)-1:
ns.append(key)
s = ns
return s
def locate_binary(name):
for PATH in os.environ['PATH'].split(':'):
for root, folders, files in os.walk(PATH):
for file in files:
if file == name:
return os.path.join(root, file)
break # Don't recurse
class JSON_Encoder:
def _encode(obj):
if isinstance(obj, dict):
## We'll need to iterate not just the value that default() usually gets passed
## But also iterate manually over each key: value pair in order to trap the keys.
for key, val in list(obj.items()):
if isinstance(val, dict):
val = json.loads(json.dumps(val, cls=JSON)) # This, is a EXTREMELY ugly hack..
# But it's the only quick way I can think of to
# trigger a encoding of sub-dictionaries.
else:
val = JSON_Encoder._encode(val)
del(obj[key])
obj[JSON_Encoder._encode(key)] = val
return obj
elif hasattr(obj, 'json'):
return obj.json()
elif hasattr(obj, '__dump__'):
return obj.__dump__()
elif isinstance(obj, (datetime, date)):
return obj.isoformat()
elif isinstance(obj, (list, set, tuple)):
r = []
for item in obj:
r.append(json.loads(json.dumps(item, cls=JSON)))
return r
else:
return obj
class JSON(json.JSONEncoder, json.JSONDecoder):
def _encode(self, obj):
return JSON_Encoder._encode(obj)
def encode(self, obj):
return super(JSON, self).encode(self._encode(obj))
class sys_command():#Thread):
"""
Stolen from archinstall_gui
"""
def __init__(self, cmd, callback=None, start_callback=None, *args, **kwargs):
kwargs.setdefault("worker_id", gen_uid())
kwargs.setdefault("emulate", False)
kwargs.setdefault("suppress_errors", False)
self.log = kwargs.get('log', log)
if kwargs['emulate']:
self.log(f"Starting command '{cmd}' in emulation mode.", level=LOG_LEVELS.Debug)
self.raw_cmd = cmd
try:
self.cmd = shlex.split(cmd)
except Exception as e:
raise ValueError(f'Incorrect string to split: {cmd}\n{e}')
self.args = args
self.kwargs = kwargs
self.kwargs.setdefault("worker", None)
self.callback = callback
self.pid = None
self.exit_code = None
self.started = time.time()
self.ended = None
self.worker_id = kwargs['worker_id']
self.trace_log = b''
self.status = 'starting'
user_catalogue = os.path.expanduser('~')
self.cwd = f"{user_catalogue}/.cache/archinstall/workers/{kwargs['worker_id']}/"
self.exec_dir = f'{self.cwd}/{os.path.basename(self.cmd[0])}_workingdir'
if not self.cmd[0][0] == '/':
# "which" doesn't work as it's a builtin to bash.
# It used to work, but for whatever reason it doesn't anymore. So back to square one..
#self.log('Worker command is not executed with absolute path, trying to find: {}'.format(self.cmd[0]), origin='spawn', level=5)
#self.log('This is the binary {} for {}'.format(o.decode('UTF-8'), self.cmd[0]), origin='spawn', level=5)
self.cmd[0] = locate_binary(self.cmd[0])
if not os.path.isdir(self.exec_dir):
os.makedirs(self.exec_dir)
if start_callback:
start_callback(self, *args, **kwargs)
self.run()
def __iter__(self, *args, **kwargs):
for line in self.trace_log.split(b'\n'):
yield line
def __repr__(self, *args, **kwargs):
return f"{self.cmd, self.trace_log}"
def decode(self, fmt='UTF-8'):
return self.trace_log.decode(fmt)
def dump(self):
return {
'status': self.status,
'worker_id': self.worker_id,
'worker_result': self.trace_log.decode('UTF-8'),
'started': self.started,
'ended': self.ended,
'started_pprint': '{}-{}-{} {}:{}:{}'.format(*time.localtime(self.started)),
'ended_pprint': '{}-{}-{} {}:{}:{}'.format(*time.localtime(self.ended)) if self.ended else None,
'exit_code': self.exit_code
}
def run(self):
self.status = 'running'
old_dir = os.getcwd()
os.chdir(self.exec_dir)
self.pid, child_fd = pty.fork()
if not self.pid: # Child process
# Replace child process with our main process
if not self.kwargs['emulate']:
try:
os.execv(self.cmd[0], self.cmd)
except FileNotFoundError:
self.status = 'done'
self.log(f"{self.cmd[0]} does not exist.", level=LOG_LEVELS.Debug)
self.exit_code = 1
return False
os.chdir(old_dir)
poller = epoll()
poller.register(child_fd, EPOLLIN | EPOLLHUP)
if 'events' in self.kwargs and 'debug' in self.kwargs:
self.log(f'[D] Using triggers for command: {self.cmd}', level=LOG_LEVELS.Debug)
self.log(json.dumps(self.kwargs['events']), level=LOG_LEVELS.Debug)
alive = True
last_trigger_pos = 0
while alive and not self.kwargs['emulate']:
for fileno, event in poller.poll(0.1):
try:
output = os.read(child_fd, 8192).strip()
self.trace_log += output
except OSError:
alive = False
break
if 'debug' in self.kwargs and self.kwargs['debug'] and len(output):
self.log(self.cmd, 'gave:', output.decode('UTF-8'), level=LOG_LEVELS.Debug)
if 'on_output' in self.kwargs:
self.kwargs['on_output'](self.kwargs['worker'], output)
lower = output.lower()
broke = False
if 'events' in self.kwargs:
for trigger in list(self.kwargs['events']):
if type(trigger) != bytes:
original = trigger
trigger = bytes(original, 'UTF-8')
self.kwargs['events'][trigger] = self.kwargs['events'][original]
del(self.kwargs['events'][original])
if type(self.kwargs['events'][trigger]) != bytes:
self.kwargs['events'][trigger] = bytes(self.kwargs['events'][trigger], 'UTF-8')
if trigger.lower() in self.trace_log[last_trigger_pos:].lower():
trigger_pos = self.trace_log[last_trigger_pos:].lower().find(trigger.lower())
if 'debug' in self.kwargs and self.kwargs['debug']:
self.log(f"Writing to subprocess {self.cmd[0]}: {self.kwargs['events'][trigger].decode('UTF-8')}", level=LOG_LEVELS.Debug)
self.log(f"Writing to subprocess {self.cmd[0]}: {self.kwargs['events'][trigger].decode('UTF-8')}", level=LOG_LEVELS.Debug)
last_trigger_pos = trigger_pos
os.write(child_fd, self.kwargs['events'][trigger])
del(self.kwargs['events'][trigger])
broke = True
break
if broke:
continue
## Adding a exit trigger:
if len(self.kwargs['events']) == 0:
if 'debug' in self.kwargs and self.kwargs['debug']:
self.log(f"Waiting for last command {self.cmd[0]} to finish.", level=LOG_LEVELS.Debug)
if bytes(f']$'.lower(), 'UTF-8') in self.trace_log[0-len(f']$')-5:].lower():
if 'debug' in self.kwargs and self.kwargs['debug']:
self.log(f"{self.cmd[0]} has finished.", level=LOG_LEVELS.Debug)
alive = False
break
self.status = 'done'
if 'debug' in self.kwargs and self.kwargs['debug']:
self.log(f"{self.cmd[0]} waiting for exit code.", level=LOG_LEVELS.Debug)
if not self.kwargs['emulate']:
try:
self.exit_code = os.waitpid(self.pid, 0)[1]
except ChildProcessError:
try:
self.exit_code = os.waitpid(child_fd, 0)[1]
except ChildProcessError:
self.exit_code = 1
else:
self.exit_code = 0
if 'debug' in self.kwargs and self.kwargs['debug']:
self.log(f"{self.cmd[0]} got exit code: {self.exit_code}", level=LOG_LEVELS.Debug)
if 'ignore_errors' in self.kwargs:
self.exit_code = 0
if self.exit_code != 0 and not self.kwargs['suppress_errors']:
self.log(f"'{self.raw_cmd}' did not exit gracefully, exit code {self.exit_code}.", level=LOG_LEVELS.Debug)
self.log(self.trace_log.decode('UTF-8'), level=LOG_LEVELS.Debug)
raise SysCallError(f"'{self.raw_cmd}' did not exit gracefully, exit code {self.exit_code}.\n{self.trace_log.decode('UTF-8')}")
self.ended = time.time()
with open(f'{self.cwd}/trace.log', 'wb') as fh:
fh.write(self.trace_log)
def prerequisite_check():
if not os.path.isdir("/sys/firmware/efi"):
raise RequirementError("Archinstall only supports machines in UEFI mode.")
return True
def reboot():
o = b''.join(sys_command("/usr/bin/reboot"))
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