1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
import os, json, hashlib, shlex
import time, pty
from subprocess import Popen, STDOUT, PIPE, check_output
from select import epoll, EPOLLIN, EPOLLHUP
def log(*args, **kwargs):
print(' '.join([str(x) for x in args]))
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
class sys_command():#Thread):
"""
Stolen from archinstall_gui
"""
def __init__(self, cmd, callback=None, start_callback=None, *args, **kwargs):
if not 'worker_id' in kwargs: kwargs['worker_id'] = gen_uid()
if not 'emulate' in kwargs: kwargs['emulate'] = False
if not 'surpress_errors' in kwargs: kwargs['surpress_errors'] = False
if kwargs['emulate']:
log(f"Starting command '{cmd}' in emulation mode.")
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
if not 'worker' in self.kwargs: self.kwargs['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}/archinstall/cache/workers/{kwargs['worker_id']}/"
self.exec_dir = f'{self.cwd}/{os.path.basename(self.cmd[0])}_workingdir'
if not self.cmd[0][0] == '/':
#log('Worker command is not executed with absolute path, trying to find: {}'.format(self.cmd[0]), origin='spawn', level=5)
o = check_output(['/usr/bin/which', self.cmd[0]])
#log('This is the binary {} for {}'.format(o.decode('UTF-8'), self.cmd[0]), origin='spawn', level=5)
self.cmd[0] = o.decode('UTF-8').strip()
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'
log(f"{self.cmd[0]} does not exist.", origin='spawn', level=2)
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:
log(f'[D] Using triggers for command: {self.cmd}')
log(json.dumps(self.kwargs['events']))
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):
log(self.cmd, 'gave:', output.decode('UTF-8'))
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']:
log(f"Writing to subprocess {self.cmd[0]}: {self.kwargs['events'][trigger].decode('UTF-8')}")
log(f"Writing to subprocess {self.cmd[0]}: {self.kwargs['events'][trigger].decode('UTF-8')}", origin='spawn', level=5)
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']:
log(f"Waiting for last command {self.cmd[0]} to finish.", origin='spawn', level=4)
if bytes(f']$'.lower(), 'UTF-8') in self.trace_log[0-len(f']$')-5:].lower():
if 'debug' in self.kwargs and self.kwargs['debug']:
log(f"{self.cmd[0]} has finished.", origin='spawn', level=4)
alive = False
break
self.status = 'done'
if 'debug' in self.kwargs and self.kwargs['debug']:
log(f"{self.cmd[0]} waiting for exit code.", origin='spawn', level=5)
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 'ignore_errors' in self.kwargs:
self.exit_code = 0
if self.exit_code != 0 and not self.kwargs['surpress_errors']:
log(f"'{self.raw_cmd}' did not exit gracefully, exit code {self.exit_code}.", origin='spawn', level=3)
log(self.trace_log.decode('UTF-8'), origin='spawn', level=3)
self.ended = time.time()
with open(f'{self.cwd}/trace.log', 'wb') as fh:
fh.write(self.trace_log)
def prerequisit_check():
if not os.path.isdir('/sys/firmware/efi'):
raise RequirementError('Archinstall only supports machines in UEFI mode.')
return True
|