-
Notifications
You must be signed in to change notification settings - Fork 158
/
lnxrouter
executable file
·2360 lines (1992 loc) · 73.5 KB
/
lnxrouter
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
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#!/bin/bash
VERSION=0.7.6
PROGNAME="$(basename "$0")"
export LC_ALL=C
SCRIPT_UMASK=0122
umask $SCRIPT_UMASK
phead() {
echo "linux-router $VERSION (https://github.com/garywill/linux-router)"
}
phead2() {
echo "Released under LGPL, with no warranty. Use on your own risk."
}
usage() {
phead
phead2
cat << EOF
Usage: $PROGNAME <options>
Options:
-h, --help Show this help
--version Print version number
-i <interface> Interface to make NATed sub-network,
and to provide Internet to
(To create WiFi hotspot use '--ap' instead)
-o <interface> Specify an inteface to provide Internet from.
(Note using this with default DNS option may leak
queries to other interfaces)
-n Do not provide Internet
--ban-priv Disallow clients to access my private network
-g <ip> This host's IPv4 address in subnet (mask is /24)
(example: '192.168.5.1' or '5' shortly)
-6 Enable IPv6 (NAT)
--no4 Disable IPv4 Internet (not forwarding IPv4).
Usually used with '-6'
--p6 <prefix> Set IPv6 LAN address prefix (length 64)
(example: 'fd00:0:0:5::' or '5' shortly)
Using this enables '-6'
--dns <ip>|<port>|<ip:port>
DNS server's upstream DNS.
Use ',' to seperate multiple servers
(default: use /etc/resolv.conf)
(Note IPv6 addresses need '[]' around)
--no-dns Do not serve DNS
--no-dnsmasq Disable dnsmasq server (DHCP, DNS, RA)
--catch-dns Transparent DNS proxy, redirect packets(TCP/UDP)
whose destination port is 53 to this host
--log-dns Show DNS query log (dnsmasq)
--dhcp-dns <IP1[,IP2]>|no
Set IPv4 DNS offered by DHCP (default: this host).
--dhcp-dns6 <IP1[,IP2]>|no
Set IPv6 DNS offered by DHCP (RA)
(default: this host)
(Note IPv6 addresses need '[]' around)
Using both above two will enable '--no-dns'
--hostname <name> DNS server associate this name with this host.
Use '-' to read name from /etc/hostname
-d DNS server will take into account /etc/hosts
-e <hosts_file> DNS server will take into account additional
hosts file
--dns-nocache DNS server no cache
--mac <MAC> Set MAC address
--random-mac Use random MAC address
--tp <port> Transparent proxy,
redirect non-LAN TCP and UDP(not tested) traffic to
port. (usually used with '--dns')
WiFi hotspot options:
--ap <wifi interface> <SSID>
Create WiFi access point
-p, --password <password>
WiFi password
--qr Show WiFi QR code in terminal (need qrencode)
--hidden Hide access point (not broadcast SSID)
--no-virt Do not create virtual interface
Using this you can't use same wlan interface
for both Internet and AP
--virt-name <name> Set name of virtual interface
-c <channel> Specify channel (default: use current, or 1 / 36)
--country <code> Set two-letter country code for regularity
(example: US)
--freq-band <GHz> Set frequency band: 2.4 or 5 (default: 2.4)
--driver Choose your WiFi adapter driver (default: nl80211)
-w <WPA version> '2' for WPA2, '1' for WPA, '1+2' for both
(default: 2)
--psk Use 64 hex digits pre-shared-key instead of
passphrase
--mac-filter Enable WiFi hotspot MAC address filtering
--mac-filter-accept Location of WiFi hotspot MAC address filter list
(defaults to /etc/hostapd/hostapd.accept)
--hostapd-debug <level> 1 or 2. Passes -d or -dd to hostapd
--isolate-clients Disable wifi communication between clients
--no-haveged Do not run haveged automatically when needed
--hs20 Enable Hotspot 2.0
WiFi 4 (802.11n) configs:
--wifi4 Enable IEEE 802.11n (HT)
--req-ht Require station HT (High Throughput) mode
--ht-capab <HT caps> HT capabilities (default: [HT40+])
WiFi 5 (802.11ac) configs:
--wifi5 Enable IEEE 802.11ac (VHT)
--req-vht Require station VHT (Very High Thoughtput) mode
--vht-capab <VHT caps> VHT capabilities
--vht-ch-width <index> Index of VHT channel width:
0 for 20MHz or 40MHz (default)
1 for 80MHz
2 for 160MHz
3 for 80+80MHz (Non-contigous 160MHz)
--vht-seg0-ch <channel> Channel index of VHT center frequency for primary
segment. Use with '--vht-ch-width'
--vht-seg1-ch <channel> Channel index of VHT center frequency for secondary
(second 80MHz) segment. Use with '--vht-ch-width 3'
Instance managing:
--daemon Run in background
-l, --list-running Show running instances
--lc, --list-clients <id|interface>
List clients of an instance. Or list neighbors of
an interface, even if it isn't handled by us.
(passive mode)
--stop <id> Stop a running instance
For <id> you can use PID or subnet interface name.
You can get them with '--list-running'
Examples:
$PROGNAME -i eth1
$PROGNAME --ap wlan0 MyAccessPoint -p MyPassPhrase
$PROGNAME -i eth1 --tp <transparent-proxy> --dns <dns-proxy>
EOF
}
check_empty_option(){
if [[ "$1" == "" ]]; then
usage
exit 0
fi
}
define_global_variables(){
# user options
GATEWAY4= # IPv4 address for this host
PREFIX6= # IPv6 LAN address prefix for this host
IID6=1 # IPv6 LAN ID for this host
IPV6=0 # enable ipv6
NO4=0 # no IPv4 Internet
BANLAN=0 # ban clients from accessing private addresses
DHCP_DNS=gateway # which ipv4 DNS the DHCP gives clients
DHCP_DNS6=gateway # which ipv6 DNS the DHCP gives clients
dnsmasq_NO_DNS=0 # disable dns server
NO_DNSMASQ=0 # disable dnsmasq (dns and dhcp)
CATCH_DNS=0 # catch clients 53 port packets
SHOW_DNS_QUERY=0 # log dns
ETC_HOSTS=0
ADDN_HOSTS=
DNS_NOCACHE=
CONN_IFACE= # which interface user choose to use to create network
INTERNET_IFACE= # which interface to get Internet from
THISHOSTNAME= # this host's name the DNS tells clients
TP_PORT= # transparent proxy port
DNS= # upstream DNS
MAC_USE_RANDOM=0
NEW_MACADDR=
DAEMONIZE=0
# script variables
SUBNET_IFACE= # which interface to create network
SHARE_METHOD=nat
OLD_MACADDR=
SUBNET_NET4=
SUBNET_NET6=
##### wifi hotspot
# user options
HIDDEN=0 # hidden wifi hotspot
WIFI_IFACE=
CHANNEL=default
HOTSPOT20=0 # For enabling Hotspot 2.0
WPA_VERSION=2
MAC_FILTER=0
MAC_FILTER_ACCEPT=/etc/hostapd/hostapd.accept
IEEE80211N=0
REQUIREHT=0
IEEE80211AC=0
REQUIREVHT=0
HT_CAPAB='[HT40+]'
VHT_CAPAB=
VHTCHANNELWIDTH=0
VHTSEG0CHINDEX=0
VHTSEG1CHINDEX=0
DRIVER=nl80211
NO_VIRT=0 # not use virtual interface
COUNTRY=
FREQ_BAND=2.4
NO_HAVEGED=0
HOSTAPD_DEBUG_ARGS=
USE_PSK=0
ISOLATE_CLIENTS=0
QR=0 # show wifi qr
# script variables
VWIFI_IFACE= # virtual wifi interface name, if created
VIRT_NAME= # name to use for virtual interface if --virt-name is used
AP_IFACE= # can be VWIFI_IFACE or WIFI_IFACE
USE_IWCONFIG=0 # some device can't use iw
#######
#-- to deal with info of a running instance. then will exit
LIST_RUNNING=0
STOP_ID=
LIST_CLIENTS_ID=
# -- variables for running
CONFDIR=
IP_VERs=
NM_UNM_LIST= # it's called "list" but for now one interface
NM_PID=
FIREWALLD_PID=
TMP_FIREWALLD_ZONE=
}
parse_user_options(){
while [[ -n "$1" ]]; do
case "$1" in
-h|--help)
usage
exit 0
;;
--version)
echo "$VERSION"
exit 0
;;
-i)
shift
CONN_IFACE="$1"
shift
;;
-o)
shift
INTERNET_IFACE="$1"
shift
;;
-n)
shift
SHARE_METHOD=none
;;
--ban-priv)
shift
BANLAN=1
;;
--tp)
shift
TP_PORT="$1"
SHARE_METHOD=redsocks
shift
;;
-g)
shift
GATEWAY4="$1"
shift
;;
-6)
shift
IPV6=1
;;
--no4)
shift
NO4=1
;;
--p6)
shift
PREFIX6="$1"
IPV6=1
shift
;;
--mac)
shift
NEW_MACADDR="$1"
shift
;;
--random-mac)
shift
MAC_USE_RANDOM=1
;;
--dns)
shift
DNS="$1"
shift
;;
--no-dns)
shift
dnsmasq_NO_DNS=1
;;
--no-dnsmasq)
shift
NO_DNSMASQ=1
;;
--dhcp-dns)
shift
DHCP_DNS="$1"
shift
;;
--dhcp-dns6)
shift
DHCP_DNS6="$1"
shift
;;
--catch-dns)
shift
CATCH_DNS=1
;;
--log-dns)
shift
SHOW_DNS_QUERY=1
;;
--hostname)
shift
THISHOSTNAME="$1"
shift
;;
-d)
shift
ETC_HOSTS=1
;;
-e)
shift
ADDN_HOSTS="$1"
shift
;;
--dns-nocache)
shift
DNS_NOCACHE=1
;;
--isolate-clients)
shift
ISOLATE_CLIENTS=1
;;
--ap)
shift
WIFI_IFACE="$1"
shift
SSID="$1"
shift
;;
-p|--password)
shift
PASSPHRASE="$1"
shift
;;
--qr)
shift
QR=1
;;
--hidden)
shift
HIDDEN=1
;;
--mac-filter)
shift
MAC_FILTER=1
;;
--mac-filter-accept)
shift
MAC_FILTER_ACCEPT="$1"
shift
;;
-c)
shift
CHANNEL="$1"
shift
;;
--hs20)
shift
HOTSPOT20=1
;;
-w)
shift
WPA_VERSION="$1"
[[ "$WPA_VERSION" == "2+1" ]] && WPA_VERSION=1+2
shift
;;
--wifi4|--ieee80211n)
shift
IEEE80211N=1
;;
--req-ht|--require-ht)
shift
REQUIREHT=1
;;
--wifi5|--ieee80211ac)
shift
IEEE80211AC=1
;;
--req-vht|--require-vht)
shift
REQUIREVHT=1
;;
--ht-capab)
shift
HT_CAPAB="$1"
shift
;;
--vht-capab)
shift
VHT_CAPAB="$1"
shift
;;
--vht-ch-width|--vht-channel-width)
shift
VHTCHANNELWIDTH="$1"
shift
;;
--vht-seg0-ch|--vht-seg0-channel)
shift
VHTSEG0CHINDEX="$1"
shift
;;
--vht-seg1-ch|--vht-seg1-channel)
shift
VHTSEG1CHINDEX="$1"
shift
;;
--driver)
shift
DRIVER="$1"
shift
;;
--no-virt)
shift
NO_VIRT=1
;;
--virt-name)
shift
VIRT_NAME="$1"
shift
;;
--country)
shift
COUNTRY="$1"
shift
;;
--freq-band)
shift
FREQ_BAND="$1"
shift
;;
--no-haveged)
shift
NO_HAVEGED=1
;;
--hostapd-debug)
shift
if [ "$1" = "1" ]; then
HOSTAPD_DEBUG_ARGS="-d"
elif [ "$1" = "2" ]; then
HOSTAPD_DEBUG_ARGS="-dd"
else
printf "Error: argument for --hostapd-debug expected 1 or 2, got %s\n" "$1"
exit 1
fi
shift
;;
--psk)
shift
USE_PSK=1
;;
--daemon)
shift
DAEMONIZE=1
;;
--stop)
shift
STOP_ID="$1"
shift
;;
-l|--list-running)
shift
LIST_RUNNING=1
;;
--lc|--list-clients)
shift
LIST_CLIENTS_ID="$1"
shift
;;
*)
echo "Invalid parameter: $1" 1>&2
exit 1
;;
esac
done
}
# seperate ip and port
sep_ip_port() {
# usage: sep_ip_port <ip:port> <var for ip> <var for port>
# input <ip:port> can be:
# port (ip is 127.0.0.1)
# ipv4
# [ipv6]
# ipv4:port
# [ipv6]:port
local IP
local PORT
local INPUT
INPUT="$1"
if (echo "$INPUT" | grep '\.' >/dev/null 2>&1) ;then
if (echo "$INPUT" | grep ':' >/dev/null 2>&1) ;then
# ipv4 + port
IP="$(echo "$INPUT" | cut -d: -f1)"
PORT="$(echo "$INPUT" | cut -d: -f2)"
else
# ipv4
IP="$INPUT"
fi
elif (echo "$INPUT" | grep '\]' >/dev/null 2>&1) ;then
if (echo "$INPUT" | grep '\]\:' >/dev/null 2>&1) ;then
# ipv6 + port
IP="$(echo "$INPUT" | cut -d']' -f1 | cut -d'[' -f2)"
PORT="$(echo "$INPUT" | cut -d']' -f2 |cut -d: -f2)"
else
# ipv6
IP="$(echo "$INPUT" | cut -d']' -f1 | cut -d'[' -f2)"
fi
else
# port
IP='127.0.0.1'
PORT="$INPUT"
fi
printf -v "$2" %s "$IP"
printf -v "$3" %s "$PORT"
}
#=========================
is_interface() {
[[ -z "$1" ]] && return 1
[[ -d "/sys/class/net/${1}" ]]
}
is_vface_name_allocated(){
is_interface "$1" || [[ -f "$COMMON_CONFDIR/vfaces/${1}" ]]
}
get_interface_phy_device() { # only for wifi interface
local x
for x in /sys/class/ieee80211/*; do
[[ ! -e "$x" ]] && continue
if [[ "${x##*/}" = "$1" ]]; then
echo "$1"
return 0
elif [[ -e "$x/device/net/$1" ]]; then
echo "${x##*/}"
return 0
elif [[ -e "$x/device/net:$1" ]]; then
echo "${x##*/}"
return 0
fi
done
echo "Failed to get phy interface" >&2
return 1
}
get_adapter_info() { # only for wifi interface
local iPHY
iPHY=$(get_interface_phy_device "$1")
[[ $? -ne 0 ]] && return 1
iw phy "$iPHY" info
}
get_adapter_kernel_module() {
local MODULE
MODULE=$(readlink -f "/sys/class/net/$1/device/driver/module")
echo "${MODULE##*/}"
}
can_be_sta_and_ap() {
# iwconfig does not provide this information, assume false
[[ $USE_IWCONFIG -eq 1 ]] && return 1
if [[ "$(get_adapter_kernel_module "$1")" == "brcmfmac" ]]; then
echo "WARN: brmfmac driver doesn't work properly with virtual interfaces and" >&2
echo " it can cause kernel panic. For this reason we disallow virtual" >&2
echo " interfaces for your adapter." >&2
echo " For more info: https://github.com/oblique/create_ap/issues/203" >&2
return 1
fi
get_adapter_info "$1" | grep -E '{.* managed.* AP.*}' > /dev/null 2>&1 && return 0
get_adapter_info "$1" | grep -E '{.* AP.* managed.*}' > /dev/null 2>&1 && return 0
return 1
}
can_be_ap() {
# iwconfig does not provide this information, assume true
[[ $USE_IWCONFIG -eq 1 ]] && return 0
get_adapter_info "$1" | grep -E '\* AP$' > /dev/null 2>&1 && return 0
return 1
}
can_transmit_to_channel() {
local IFACE CHANNEL_NUM CHANNEL_INFO
IFACE=$1
CHANNEL_NUM=$2
if [[ $USE_IWCONFIG -eq 0 ]]; then
CHANNEL_INFO=$(get_adapter_info "${IFACE}" | grep -E " [0-9]+(\.[0-9]+){0,1} MHz \[${CHANNEL_NUM}\]")
[[ -z "${CHANNEL_INFO}" ]] && return 1
[[ "${CHANNEL_INFO}" == *no\ IR* ]] && return 1
[[ "${CHANNEL_INFO}" == *disabled* ]] && return 1
return 0
else
CHANNEL_NUM=$(printf '%02d' ${CHANNEL_NUM})
CHANNEL_INFO=$(iwlist "${IFACE}" channel | grep -E "Channel[[:blank:]]${CHANNEL_NUM}[[:blank:]]?:")
[[ -z "${CHANNEL_INFO}" ]] && return 1
return 0
fi
}
# taken from iw/util.c
ieee80211_frequency_to_channel() {
local FREQ=$1
if [[ $FREQ -eq 2484 ]]; then
echo 14
elif [[ $FREQ -lt 2484 ]]; then
echo $(( ($FREQ - 2407) / 5 ))
elif [[ $FREQ -ge 4910 && $FREQ -le 4980 ]]; then
echo $(( ($FREQ - 4000) / 5 ))
elif [[ $FREQ -le 45000 ]]; then
echo $(( ($FREQ - 5000) / 5 ))
elif [[ $FREQ -ge 58320 && $FREQ -le 64800 ]]; then
echo $(( ($FREQ - 56160) / 2160 ))
else
echo 0
fi
}
is_interface_wifi_connected() {
if [[ $USE_IWCONFIG -eq 0 ]]; then
iw dev "$1" link 2>&1 | grep -E '^Connected to' > /dev/null 2>&1 && return 0
else
iwconfig "$1" 2>&1 | grep -E 'Access Point: [0-9a-fA-F]{2}:' > /dev/null 2>&1 && return 0
fi
return 1
}
is_unicast_macaddr() {
local x
x=$(echo "$1" | cut -d: -f1)
x=$(printf '%d' "0x${x}")
[[ $(expr $x % 2) -eq 0 ]]
}
get_interface_mac() {
is_interface "$1" || return
cat "/sys/class/net/${1}/address"
}
show_interface_pci_info() { # pci id / model / virtual
is_interface "$1" || return
local device_path
local bus_id=""
local device_type_and_bus_id="unknown"
local driver=""
local device_fullname=""
device_path="$(readlink -f /sys/class/net/$1)"
if [[ "$device_path" == "/sys/devices/pci"* ]]; then
local pci_path
pci_path=$device_path/../..
if [[ -d "$pci_path/driver" ]] ; then
driver=$(readlink -f "$pci_path/driver" | sed 's/\//\n/g' | tail -n 1)
fi
bus_id="$(echo "$device_path" | sed 's/\//\n/g' | tail -n 3 |sed -n 1p)"
device_type_and_bus_id="PCI: $bus_id"
if which lspci >/dev/null 2>&1 ; then
device_fullname="$( lspci -D -nn -s "$bus_id" | awk '{$1="" ; print $0}' )"
fi
elif [[ "$device_path" == *"/virtual/"* ]]; then
device_type_and_bus_id="virtual interface"
fi
echo "$device_type_and_bus_id"
[[ -n "$driver" ]] && echo "System-already-loaded driver: $driver"
[[ -n "$device_fullname" ]] && echo "$device_fullname"
echo ""
# TODO usb
}
alloc_new_vface_name() { # only for wifi
local i=0
local v_iface_name="$VIRT_NAME"
if [[ -z $VIRT_NAME ]]; then
while :; do
v_iface_name="x$i${WIFI_IFACE}"
i=$((i + 1))
is_vface_name_allocated "${v_iface_name}" || break
done
fi
mkdir -p "$COMMON_CONFDIR/vfaces"
touch "$COMMON_CONFDIR/vfaces/${v_iface_name}"
echo "${v_iface_name}"
}
dealloc_vface_name() {
rm -f "$COMMON_CONFDIR/vfaces/$1"
}
#======
get_all_mac_in_system() {
cat /sys/class/net/*/address
}
get_new_macaddr_according_to_existing() {
local REALDEV OLDMAC NEWMAC LAST_BYTE i
REALDEV=$1
OLDMAC=$(get_interface_mac "$REALDEV")
NEWMAC=""
LAST_BYTE=$(printf %d 0x${OLDMAC##*:})
for i in {10..240}; do
NEWMAC="${OLDMAC%:*}:$(printf %02x $(( ($LAST_BYTE + $i) % 256 )))"
(get_all_mac_in_system | grep "$NEWMAC" > /dev/null 2>&1) || break
done
echo "$NEWMAC"
}
generate_random_mac() {
local r1 r2 r3 r4 r5 r6
local RAND_MAC
while :; do
r1=$( printf "%02x" $(($RANDOM%256/4*4)) )
r2=$( printf "%02x" $(($RANDOM%256)) )
r3=$( printf "%02x" $(($RANDOM%256)) )
r4=$( printf "%02x" $(($RANDOM%256)) )
r5=$( printf "%02x" $(($RANDOM%256)) )
r6=$( printf "%02x" $(($RANDOM%256)) )
RAND_MAC="$r1:$r2:$r3:$r4:$r5:$r6"
( ! ip link | grep "link" | grep "$RAND_MAC" > /dev/null 2>&1 ) && \
( ! ip maddress | grep "link" | grep "$RAND_MAC" > /dev/null 2>&1 ) && \
( ! ip neigh | grep "lladdr $RAND_MAC" > /dev/null 2>&1 ) && \
( ! get_all_mac_in_system | grep "$RAND_MAC" ) && \
break
done
echo "$RAND_MAC"
}
is_ip4_lan_range_available() { # checks 192.168.x.x
( ip -4 address | grep "inet 192\.168\.$1\." > /dev/null 2>&1 ) && return 1
( ip -4 route | grep "^192\.168\.$1\." > /dev/null 2>&1 ) && return 1
( ip -4 route get 192.168.$1.0 2>&1 | grep -E "\bvia\b|\bunreachable\b" > /dev/null 2>&1 ) && \
( ip -4 route get 192.168.$1.255 2>&1 | grep -E "\bvia\b|\bunreachable\b" > /dev/null 2>&1 ) && return 0
return 1
}
is_ip6_lan_range_available() { # checks fdxx::
( ip -6 address | grep -i "inet6 fd$1:$2$3:$4$5:$6$7:" > /dev/null 2>&1 ) && return 1
( ip -6 route | grep -i "^fd$1:$2$3:$4$5:$6$7:" > /dev/null 2>&1 ) && return 1
( ip -6 route get fd$1:$2$3:$4$5:$6$7:: 2>&1 | grep -E "\bvia\b|\bunreachable\b" > /dev/null 2>&1 ) && \
( ip -6 route get fd$1:$2$3:$4$5:$6$7:ffff:ffff:ffff:ffff 2>&1 | grep -E "\bvia\b|\bunreachable\b" > /dev/null 2>&1 ) && return 0
return 1
}
generate_random_ip4() {
local random_ip4
while :; do
random_ip4=$(($RANDOM%256))
is_ip4_lan_range_available $random_ip4 && break
done
echo "192.168.$random_ip4.1"
}
generate_random_lan_ip6_prefix() {
local r1 r2 r3 r4 r5 r6 r7
while :; do
r1=$( printf "%x" $(($RANDOM%240+16)) )
r2=$( printf "%x" $(($RANDOM%240+16)) )
r3=$( printf "%x" $(($RANDOM%240+16)) )
r4=$( printf "%x" $(($RANDOM%240+16)) )
r5=$( printf "%x" $(($RANDOM%240+16)) )
r6=$( printf "%x" $(($RANDOM%240+16)) )
r7=$( printf "%x" $(($RANDOM%240+16)) )
is_ip6_lan_range_available "$r1" "$r2" "$r3" "$r4" "$r5" "$r6" "$r7" && break
done
echo "fd$r1:$r2$r3:$r4$r5:$r6$r7::"
}
# start haveged when needed
haveged_watchdog() {
local show_warn=1
while :; do
if [[ $(cat /proc/sys/kernel/random/entropy_avail) -lt 1000 ]]; then
if ! which haveged > /dev/null 2>&1; then
if [[ $show_warn -eq 1 ]]; then
echo "WARN: Low entropy detected. We recommend you to install \`haveged'" 1>&2
show_warn=0
fi
elif ! pidof haveged > /dev/null 2>&1; then # TODO judge zombie ?
echo "Low entropy detected, starting haveged" 1>&2
# boost low-entropy
haveged -w 1024 -p $COMMON_CONFDIR/haveged.pid
fi
fi
sleep 2
done
}
pid_watchdog() {
local PID="$1"
local SLEEP="$2"
local ERR_MSG="$3"
local ST
while true
do
if [[ -e "/proc/$PID" ]]; then
ST="$(cat "/proc/$PID/status" | grep "^State:" | awk '{print $2}')"
if [[ "$ST" != 'Z' ]]; then
sleep "$SLEEP"
continue
fi
fi
die "$ERR_MSG"
done
}
#========
get_pid_by_dbus_name() {
local DBUS_NAME="$1"
local pid r
which dbus-send >/dev/null 2>&1 || return 1
pid="$( dbus-send --system --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.GetConnectionUnixProcessID string:$DBUS_NAME 2>/dev/null | grep " uint32 " | awk '{print $2}' )"
r=$?
echo "$pid"
return $r
}
is_same_netns() {
local pid2="$1"
[[ ! -f /proc/$$/ns/net ]] && return 0 # no netns feature. treat as same
[[ "$(readlink /proc/$$/ns/net)" == "$(readlink /proc/$pid2/ns/net)" ]] && return 0
return 1
}
#-----------------
# only support NetworkManager >= 0.9.9
is_nm_running() {
NM_PID="$(get_pid_by_dbus_name "org.freedesktop.NetworkManager")"
[[ ! -n "$NM_PID" ]] && return 1 # not running
if (which nmcli >/dev/null 2>&1 ) && (nmcli -t -f RUNNING g 2>&1 | grep -E '^running$' >/dev/null 2>&1 ) ; then
if is_same_netns "$NM_PID"; then
return 0
fi
fi
NM_PID= # cancel value if treat as not running
return 1 # not running
}
nm_knows() {
(nmcli dev show "$1" | grep -E "^GENERAL.STATE:" >/dev/null 2>&1 ) && return 0 # nm sees
return 1 # nm doesn't see this interface
}
nm_get_manage() { # get an interface's managed state
local s
s=$(nmcli dev show "$1" | grep -E "^GENERAL.STATE:") || return 2 # no such interface
(echo "$s" | grep "unmanaged" >/dev/null 2>&1) && return 1 # unmanaged
return 0 # managed
}
nm_set_unmanaged() {
while ! nm_knows "$1" ; do # wait for virtual wifi interface seen by NM
sleep 0.5
done
if nm_get_manage "$1" ;then
echo "Set $1 unmanaged by NetworkManager"
nmcli dev set "$1" managed no || die "Failed to set $1 unmanaged by NetworkManager"
NM_UNM_LIST=$1
sleep 1
fi
}
nm_set_managed() {
nmcli dev set "$1" managed yes
NM_UNM_LIST=
}
nm_restore_manage() {
if [[ $NM_UNM_LIST ]]; then
echo "Restore $NM_UNM_LIST managed by NetworkManager"
nm_set_managed "$NM_UNM_LIST"
sleep 0.5
fi
}
#-------
is_firewalld_running() {
FIREWALLD_PID="$(get_pid_by_dbus_name "org.fedoraproject.FirewallD1")"
[[ ! -n "$FIREWALLD_PID" ]] && return 1 # not running
if (which firewall-cmd >/dev/null 2>&1 ) && [[ "$(firewall-cmd --state 2>&1)" == "running" ]] ; then
if is_same_netns "$FIREWALLD_PID"; then
echo "firewalld is running ($(firewall-cmd --version))"
return 0
fi
fi
FIREWALLD_PID= # cancel value if treat as not running
return 1 # not running
}
firewalld_add_tmpzone() {
# TMP_FIREWALLD_ZONE="lrt${$}${SUBNET_IFACE}"
TMP_FIREWALLD_ZONE="trusted"
# firewall-cmd --new-zone=$TMP_FIREWALLD_ZONE || die "Failed creating temporary firewalld zone"
echo "Adding $SUBNET_IFACE to firewalld '$TMP_FIREWALLD_ZONE' zone"
firewall-cmd --zone=$TMP_FIREWALLD_ZONE --add-interface=$SUBNET_IFACE >/dev/null || die "Failed adding interface to firewalld temporary zone"
}
firewalld_del_tmpzone() {
if [[ -n "$TMP_FIREWALLD_ZONE" ]];then
echo "Removing $SUBNET_IFACE from firewalld '$TMP_FIREWALLD_ZONE' zone"
firewall-cmd --zone=$TMP_FIREWALLD_ZONE --remove-interface=$SUBNET_IFACE >/dev/null
# firewall-cmd --delete-zone=$TMP_FIREWALLD_ZONE
fi
}
#=========
CUSTOM_CHAINS_4_filter=
CUSTOM_CHAINS_4_nat=
CUSTOM_CHAINS_6_filter=
CUSTOM_CHAINS_6_nat=
iptb()
{
local FoS=$1 # 4 | 6
shift
local Vis=$1 # 'v' | 'n'
shift
local T=$1 # table
shift
local ACT=$1 # action: I | A | N . On undo: I or A -> D , N -> F+X
shift
local CH=$1 # chain
shift
[[ "$IPV6" -ne 1 && "$FoS" == "6" ]] && return
local CMD_HEAD=""
local MOUTH=""
local NECK=""
local HAND_UN_NC=0
local TAIL=""
local FULL=""
local ADD_TO_UNDO=1
local arr_name w
for arr_name in CUSTOM_CHAINS_4_filter CUSTOM_CHAINS_4_nat CUSTOM_CHAINS_6_filter CUSTOM_CHAINS_6_nat
do
local arr_content
eval arr_content=\"\${$arr_name}\"
#echo $arr_content
for w in $arr_content
do
if [[ "$arr_name" =~ "$FoS" && "$arr_name" =~ "$T" && "$w" == "$CH" ]]; then
ADD_TO_UNDO=0
fi
done