Send patches - preferably formatted by git format-patch - to patches at archlinux32 dot org.
summaryrefslogtreecommitdiff
path: root/archinstall.py
blob: 9c22e68073a7c045a2a089f9c853775705789a03 (plain)
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
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
#!/usr/bin/python3
import traceback
import psutil, os, re, struct, sys, json
import urllib.request, urllib.parse
from glob import glob
#from select import epoll, EPOLLIN, EPOLLHUP
from socket import socket, inet_ntoa, AF_INET, AF_INET6, AF_PACKET
from collections import OrderedDict as oDict
from subprocess import Popen, STDOUT, PIPE
from time import sleep

rootdir_pattern = re.compile('^.*?/devices')
harddrives = oDict()

args = {}
positionals = []
for arg in sys.argv[1:]:
	if '--' == arg[:2]:
		if '=' in arg:
			key, val = [strip(x) for x in arg[2:].split('=')]
		else:
			key, val = arg[2:], True
		args[key] = val
	else:
		positionals.append(arg)

def get_default_gateway_linux():
	"""Read the default gateway directly from /proc."""
	with open("/proc/net/route") as fh:
		for line in fh:
			fields = line.strip().split()
			if fields[1] != '00000000' or not int(fields[3], 16) & 2:
				continue

			return inet_ntoa(struct.pack("<L", int(fields[2], 16)))

def get_local_MACs():
	macs = {}
	for nic, opts in psutil.net_if_addrs().items():
		for addr in opts:
			#if addr.family in (AF_INET, AF_INET6) and addr.address:
			if addr.family == AF_PACKET: # MAC
				macs[addr.address] = nic
	return macs

def run(cmd, echo=False, opts=None, *args, **kwargs):
	if not opts: opts = {}
	#print('[!] {}'.format(cmd))
	handle = Popen(cmd, shell='True', stdout=PIPE, stderr=STDOUT, **kwargs)
	output = b''
	while handle.poll() is None:
		data = handle.stdout.read()
		if len(data):
			if echo or 'debug' in opts:
				print(data.decode('UTF-8'), end='')
		#	print(data.decode('UTF-8'), end='')
			output += data
	data = handle.stdout.read()
	if echo or 'debug' in opts:
		print(data.decode('UTF-8'), end='')
	output += data
	handle.stdout.close()
	return output

def update_git():
	default_gw = get_default_gateway_linux()
	if(default_gw):
		## Not the most elegant way to make sure git conflicts doesn't occur (yea fml)
		#os.remove('/root/archinstall/archinstall.py')
		#os.remove('/root/archinstall/README.md')
		output = run('(cd /root/archinstall; git fetch --all)') # git reset --hard origin/<branch_name>
		
		if b'error:' in output:
			print('[N] Could not update git source for some reason.')
			return

		# b'From github.com:Torxed/archinstall\n   339d687..80b97f3  master     -> origin/master\nUpdating 339d687..80b97f3\nFast-forward\n README.md | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)\n'
		tmp = re.findall(b'[0-9]+ file changed', output)
		if len(tmp):
			num_changes = int(tmp[0].split(b' ',1)[0])
			if(num_changes):
				## Reboot the script (in same context)
				os.execv('/usr/bin/python3', ['archinstall.py', 'archinstall.py'] + sys.argv[1:])

def device_state(name):
	# Based out of: https://askubuntu.com/questions/528690/how-to-get-list-of-all-non-removable-disk-device-names-ssd-hdd-and-sata-ide-onl/528709#528709
	with open('/sys/block/{}/device/block/{}/removable'.format(name, name)) as f:
		if f.read(1) == '1':
			return

	path = rootdir_pattern.sub('', os.readlink('/sys/block/{}'.format(name)))
	hotplug_buses = ("usb", "ieee1394", "mmc", "pcmcia", "firewire")
	for bus in hotplug_buses:
		if os.path.exists('/sys/bus/{}'.format(bus)):
			for device_bus in os.listdir('/sys/bus/{}/devices'.format(bus)):
				device_link = rootdir_pattern.sub('', os.readlink('/sys/bus/{}/devices/{}'.format(bus, device_bus)))
				if re.search(device_link, path):
					return
	return True

def grab_partitions(dev):
	o = run('parted -m -s {} p'.format(dev)).decode('UTF-8')
	parts = oDict()
	for line in o.split('\n'):
		if ':' in line:
			data = line.split(':')
			if data[0].isdigit():
				parts[int(data[0])] = {
					'start' : data[1],
					'end' : data[2],
					'size' : data[3],
					'sum' : data[4],
					'label' : data[5],
					'options' : data[6]
				}
	return parts

def update_drive_list():
	for path in glob('/sys/block/*/device'):
		name = re.sub('.*/(.*?)/device', '\g<1>', path)
		if device_state(name):
			harddrives['/dev/{}'.format(name)] = psutil.disk_usage('/dev/{}'.format(name))

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 grab_url_data(path):
	safe_path = path[:path.find(':')+1]+''.join([item if item in ('/', '?', '=', '&') else urllib.parse.quote(item) for item in multisplit(path[path.find(':')+1:], ('/', '?', '=', '&'))])
	response = urllib.request.urlopen(safe_path)
	return response.read()

if __name__ == '__main__':
	update_git() # Breaks and restarts the script if an update was found.
	update_drive_list()

	if not 'drive' in args: args['drive'] = list(harddrives.keys())[0] # First drive found
	if not 'size' in args: args['size'] = '100%'
	if not 'start' in args: args['start'] = '513MiB'
	if not 'pwfile' in args: args['pwfile'] = '/tmp/diskpw'
	if not 'hostname' in args: args['hostname'] = 'Arcinstall'
	if not 'country' in args: args['country'] = 'SE' #all
	if not 'packages' in args: args['packages'] = ''
	if not 'post' in args: args['post'] = 'reboot'
	if not 'password' in args: args['password'] = '0000'

	## == If we got networking,
	#     Try fetching instructions for this box and execute them.
	instructions = {}
	if get_default_gateway_linux():
		locmac = get_local_MACs()
		if not len(locmac):
			print('[N] No network interfaces - No net deploy.')
		else:
			for mac in locmac:
				try:
					instructions = grab_url_data('https://raw.githubusercontent.com/Torxed/archinstall/net-deploy/deployments/{}.json'.format(mac))
				except urllib.error.HTTPError:
					print('[N] No instructions for this box on this mac: {}'.format(mac))
					continue
				
				#print('Decoding:', instructions)
				try:
					instructions = json.loads(instructions.decode('UTF-8'), object_pairs_hook=oDict)
				except:
					print('[E] JSON instructions failed to load for {}'.format(mac))
					traceback.print_exc()
					instructions = {}
					sleep(5)
					continue

				if 'args' in instructions:
					for key, val in instructions['args'].items():
						args[key] = val
	else:
		print('[N] No gateway - No net deploy')

	print(args)

	if not os.path.isfile(args['pwfile']):
		#PIN = '0000'
		with open(args['pwfile'], 'w') as pw:
			pw.write(args['password'])
	#else:
	#	## TODO: Convert to `rb` instead.
	#	#        We shouldn't discriminate \xfu from being a passwd phrase.
	#	with open(args['pwfile'], 'r') as pw:
	#		PIN = pw.read().strip()

	print()
	print('[!] Disk PASSWORD is: {}'.format(args['password']))
	print()
	print('[N] Setting up {drive}.'.format(**args))
	# dd if=/dev/random of=args['drive'] bs=4096 status=progress
	# https://github.com/dcantrell/pyparted	would be nice, but isn't officially in the repo's #SadPanda
	o = run('parted -s {drive} mklabel gpt'.format(**args))
	o = run('parted -s {drive} mkpart primary FAT32 1MiB {start}'.format(**args))
	o = run('parted -s {drive} name 1 "EFI"'.format(**args))
	o = run('parted -s {drive} set 1 esp on'.format(**args))
	o = run('parted -s {drive} set 1 boot on'.format(**args))
	o = run('parted -s {drive} mkpart primary {start} {size}'.format(**args))
	
	first, second = grab_partitions(args['drive']).keys()
	o = run('mkfs.vfat -F32 {drive}{part1}'.format(**args, part1=first))

	# "--cipher sha512" breaks the shit.
	# TODO: --use-random instead of --use-urandom
	print('[N] Adding encryption to {drive}{part2}.'.format(**args, part2=second))
	o = run('cryptsetup -q -v --type luks2 --pbkdf argon2i --hash sha512 --key-size 512 --iter-time 10000 --key-file {pwfile} --use-urandom luksFormat {drive}{part2}'.format(**args, part2=second))
	if not o.decode('UTF-8').strip() == 'Command successful.':
		print('[E] Failed to setup disk encryption.')
		exit(1)

	o = run('cryptsetup open {drive}{part2} luksdev --key-file {pwfile} --type luks2'.format(**args, part2=second))
	o = run('file /dev/mapper/luksdev') # /dev/dm-0
	if b'cannot open' in o:
		print('[E] Could not mount encrypted device.')
		exit(1)

	o = run('mkfs.btrfs /dev/mapper/luksdev')
	o = run('mount /dev/mapper/luksdev /mnt')

	print('[N] Reordering mirrors.')
	os.makedirs('/mnt/boot')
	o = run('mount {drive}{part1} /mnt/boot'.format(**args, part1=first))
	o = run("wget 'https://www.archlinux.org/mirrorlist/?country={country}&protocol=https&ip_version=4&ip_version=6&use_mirror_status=on' -O /root/mirrorlist".format(**args))
	o = run("sed -i 's/#Server/Server/' /root/mirrorlist")
	o = run('rankmirrors -n 6 /root/mirrorlist > /etc/pacman.d/mirrorlist')

	pre_conf = {}
	if 'pre' in instructions:
		pre_conf = instructions['pre']
	elif 'prerequisits' in instructions:
		pre_conf = instructions['prerequisits']

	## Prerequisit steps needs to NOT be executed in arch-chroot.
	## Mainly because there's no root structure to chroot into.
	## But partly because some configurations need to be done against the live CD.
	## (For instance, modifying mirrors are done on LiveCD and replicated intwards)
	for title in pre_conf:
		print('[N] Network prerequisit step: {}'.format(title))
		for command in pre_conf[title]:
			opts = pre_conf[title][command] if type(pre_conf[title][command]) in (dict, oDict) else {}
			if len(opts):
				print('[-] Options: {}'.format(opts))

			#print('[N] Command: {} ({})'.format(command, opts))
			o = run('{c}'.format(c=command), opts)
			if type(conf[title][command]) == bytes and len(conf[title][command]) and not conf[title][command] in o:
				print('[W] Prerequisit step failed: {}'.format(o.decode('UTF-8')))
			#print(o)

	print('[N] Straping in packages.')
	o = run('pacman -Syy')
	o = run('pacstrap /mnt base base-devel btrfs-progs efibootmgr nano wpa_supplicant dialog {packages}'.format(**args))

	o = run('genfstab -pU /mnt >> /mnt/etc/fstab')
	with open('/mnt/etc/fstab', 'a') as fstab:
		fstab.write('\ntmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0\n') # Redundant \n at the start? who knoes?

	o = run('arch-chroot /mnt rm /etc/localtime')
	o = run('arch-chroot /mnt ln -s /usr/share/zoneinfo/Europe/Stockholm /etc/localtime')
	o = run('arch-chroot /mnt hwclock --hctosys --localtime')
	#o = run('arch-chroot /mnt echo "{hostname}" > /etc/hostname'.format(**args))
	#o = run("arch-chroot /mnt sed -i 's/#\(en_US\.UTF-8\)/\1/' /etc/locale.gen")
	o = run("arch-chroot /mnt sh -c \"echo '{hostname}' > /etc/hostname\"".format(**args))
	o = run("arch-chroot /mnt sh -c \"echo -n 'en_US.UTF-8' > /etc/locale.gen\"")
	o = run('arch-chroot /mnt locale-gen')
	o = run('arch-chroot /mnt chmod 700 /root')

	## == Passwords
	# o = run('arch-chroot /mnt usermod --password {} root'.format(args['password']))
	# o = run("arch-chroot /mnt sh -c 'echo {pin} | passwd --stdin root'".format(pin='"{pin}"'.format(**args, pin=args['password'])), echo=True)
	o = run("arch-chroot /mnt sh -c \"echo 'root:{pin}' | chpasswd\"".format(**args, pin=args['password']))
	if 'user' in args:
		o = run('arch-chroot /mnt useradd -m -G wheel {user}'.format(**args))
		o = run("arch-chroot /mnt sh -c \"echo '{user}:{pin}' | chpasswd\"".format(**args, pin=args['password']))

	with open('/mnt/etc/mkinitcpio.conf', 'w') as mkinit:
		## TODO: Don't replace it, in case some update in the future actually adds something.
		mkinit.write('MODULES=(btrfs)\n')
		mkinit.write('BINARIES=(/usr/bin/btrfs)\n')
		mkinit.write('FILES=()\n')
		mkinit.write('HOOKS=(base udev autodetect modconf block encrypt filesystems keyboard fsck)\n')
	o = run('arch-chroot /mnt mkinitcpio -p linux')
	o = run('arch-chroot /mnt bootctl --path=/boot install')

	with open('/mnt/boot/loader/loader.conf', 'w') as loader:
		loader.write('default arch\n')
		loader.write('timeout 5\n')

	## For some reason, blkid and /dev/disk/by-uuid are not getting along well.
	## And blkid is wrong in terms of LUKS.
	#UUID = run('blkid -s PARTUUID -o value {drive}{part2}'.format(**args, part2=second)).decode('UTF-8').strip()
	UUID = run("ls -l /dev/disk/by-uuid/ | grep {basename}{part2} | awk '{awk}'".format(basename=os.path.basename(args['drive']), part2=second, awk='{print $9}')).decode('UTF-8').strip()
	with open('/mnt/boot/loader/entries/arch.conf', 'w') as entry:
		entry.write('title Arch Linux\n')
		entry.write('linux /vmlinuz-linux\n')
		entry.write('initrd /initramfs-linux.img\n')
		entry.write('options cryptdevice=UUID={UUID}:luksdev root=/dev/mapper/luksdev rw intel_pstate=no_hwp\n'.format(UUID=UUID))

	conf = {}
	if 'post' in instructions:
		conf = instructions['post']
	elif not 'args' in instructions and len(instructions):
		conf = instructions

	for title in conf:
		print('[N] Network Deploy: {}'.format(title))
		for command in conf[title]:
			opts = conf[title][command] if type(conf[title][command]) in (dict, oDict) else {}
			if len(opts):
				print('[-] Options: {}'.format(opts))

			#print('[N] Command: {} ({})'.format(command, opts))
			o = run('arch-chroot /mnt {c}'.format(c=command), opts)
			if type(conf[title][command]) == bytes and len(conf[title][command]) and not conf[title][command] in o:
				print('[W] Post install command failed: {}'.format(o.decode('UTF-8')))
			#print(o)

	o = run('umount -R /mnt')
	if args['post'] == 'reboot':
		o = run('reboot now')
	else:
		print('Done. "reboot" when you\'re done tinkering.')