import hashlib import json import logging import os import pty import shlex import sys import time from datetime import datetime, date from select import epoll, EPOLLIN, EPOLLHUP from typing import Union from .exceptions import * from .output import log 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 JsonEncoder: 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. copy = {} for key, val in list(obj.items()): if isinstance(val, dict): # This, is a EXTREMELY ugly hack.. but it's the only quick way I can think of to trigger a encoding of sub-dictionaries. val = json.loads(json.dumps(val, cls=JSON)) else: val = JsonEncoder._encode(val) if type(key) == str and key[0] == '!': copy[JsonEncoder._encode(key)] = '******' else: copy[JsonEncoder._encode(key)] = val return copy 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 JsonEncoder._encode(obj) def encode(self, obj): return super(JSON, self).encode(self._encode(obj)) class SysCommand: """ Stolen from archinstall_gui """ def __init__(self, cmd, callback=None, start_callback=None, peak_output=False, environment_vars=None, *args, **kwargs): if environment_vars is None: environment_vars = {} 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=logging.DEBUG) if type(cmd) is list: # if we get a list of arguments self.raw_cmd = shlex.join(cmd) self.cmd = cmd else: # else consider it a single shell string # this should only be used if really necessary 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.peak_output = peak_output self.environment_vars = environment_vars 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('~') if workdir := kwargs.get('workdir', None): self.cwd = workdir self.exec_dir = workdir else: 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 peak(self, output: Union[str, bytes]) -> bool: if type(output) == bytes: try: output = output.decode('UTF-8') except UnicodeDecodeError: return False output = output.strip('\r\n ') if len(output) <= 0: return False if self.peak_output: from .user_interaction import get_terminal_width # Move back to the beginning of the terminal sys.stdout.flush() sys.stdout.write("\033[%dG" % 0) sys.stdout.flush() # Clear the line sys.stdout.write(" " * get_terminal_width()) sys.stdout.flush() # Move back to the beginning again sys.stdout.flush() sys.stdout.write("\033[%dG" % 0) sys.stdout.flush() # And print the new output we're peaking on: sys.stdout.write(output) sys.stdout.flush() return True 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.execve(self.cmd[0], self.cmd, {**os.environ, **self.environment_vars}) except FileNotFoundError: self.status = 'done' self.log(f"{self.cmd[0]} does not exist.", level=logging.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=logging.DEBUG) self.log(json.dumps(self.kwargs['events']), level=logging.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) self.peak(output) 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=logging.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=logging.DEBUG) self.log(f"Writing to subprocess {self.cmd[0]}: {self.kwargs['events'][trigger].decode('UTF-8')}", level=logging.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=logging.DEBUG) if bytes(']$'.lower(), 'UTF-8') in self.trace_log[0 - len(']$') - 5:].lower(): if 'debug' in self.kwargs and self.kwargs['debug']: self.log(f"{self.cmd[0]} has finished.", level=logging.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=logging.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=logging.DEBUG) if 'ignore_errors' in self.kwargs: self.exit_code = 0 if self.exit_code != 0 and not self.kwargs['suppress_errors']: # self.log(self.trace_log.decode('UTF-8'), level=logging.DEBUG) # self.log(f"'{self.raw_cmd}' did not exit gracefully, exit code {self.exit_code}.", level=logging.ERROR) raise SysCallError( message=f"{self.trace_log.decode('UTF-8')}\n'{self.raw_cmd}' did not exit gracefully (trace log above), exit code: {self.exit_code}", exit_code=self.exit_code) self.ended = time.time() with open(f'{self.cwd}/trace.log', 'wb') as fh: fh.write(self.trace_log) try: os.close(child_fd) except: pass 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(SysCommand("/usr/bin/reboot"))