blob: e737fc5e32e1dbfcce89d951ceea7b99ee90ccb4 (
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
|
## /usr/lib/network/globals needs to be sourced before this file
## Interface a DHCP client
# $1: DHCP client
# $2: command
# $3...: additional arguments
dhcp_call() {
local client="$1" command="$2"
shift 2
if [[ ! -r "$SUBR_DIR/dhcp/$client" ]]; then
report_error "DHCP client '$client' is unsupported"
return 127
fi
if ! source "$SUBR_DIR/dhcp/$client"; then
report_error "DHCP client '$client' is not installed or not ready"
return 127
fi
"${client}_$command" "$@"
}
## Add resolv.conf entries for an interface
# $1: interface name
# $2...: entries, one line per variable
resolvconf_add() {
local interface="$1"
shift
printf "%s\n" "$@" | resolvconf -a "$interface"
}
## Set up an IP configuration
# $Interface: interface name
# $IP: type of IPv4 configuration
# $IP6: type of IPv6 configuration
ip_set() {
local addr line route interface_sysctl=${Interface/.//}
if [[ -z $IP && -z $IP6 ]]; then
report_error "Neither IP, nor IP6 was specified"
return 1
fi
# Load ipv6 module if necessary
case "$IP6" in
dhcp*|stateless|static)
[[ -d "/proc/sys/net/ipv6" ]] || modprobe ipv6
[[ $IP6 == "static" ]]
sysctl -q -w "net.ipv6.conf.$interface_sysctl.accept_ra=$?"
;;
no)
[[ -d "/proc/sys/net/ipv6" ]] && sysctl -q -w "net.ipv6.conf.$interface_sysctl.accept_ra=0"
;;
"") # undefined IP6 does not prevent RA's from being received -> nop
;;
*)
report_error "IP6 must be 'dhcp', 'dhcp-noaddr', 'stateless', 'static' or 'no'"
return 1
;;
esac
case $IP in
dhcp)
dhcp_call "${DHCPClient:-dhcpcd}" start 4 || return
;;
static)
for addr in "${Address[@]}"; do
if ! do_debug ip addr add "$addr" brd + dev "$Interface"; then
report_error "Could not add address '$addr' to interface '$Interface'"
return 1
fi
done
;;
""|no)
;;
*)
report_error "IP must be either 'dhcp', 'static' or 'no'"
return 1
;;
esac
if [[ $IP ]]; then
# Add static IP routes
for route in "${Routes[@]}"; do
if ! do_debug ip route add $route dev "$Interface"; then
report_error "Could not add route '$route' to interface '$Interface'"
return 1
fi
done
# Set a custom gateway after static routes are added
if [[ $IP == "static" && $Gateway ]]; then
if ! do_debug ip route add default via "$Gateway" dev "$Interface"; then
report_error "Could not set gateway '$Gateway' on interface '$Interface'"
return 1
fi
fi
fi
case "$IP6" in
dhcp|dhcp-noaddr)
dhcp_call "${DHCP6Client:-dhclient}" start 6 ${IP6:5} || return
;;
stateless|static)
for addr in "${Address6[@]}"; do
if ! do_debug ip -6 addr add $addr $(is_yes "${SkipDAD:-no}" && printf nodad) dev "$Interface"; then
report_error "Could not add address '$addr' to interface '$Interface'"
fi
done
;;
esac
if [[ $IP6 ]]; then
if ! is_yes "${SkipDAD:-no}"; then
# Wait for Duplicate Address Detection to finish
if ! timeout_wait "${TimeoutDAD:-3}" '[[ -z "$(ip -6 addr show dev "$Interface" tentative)" ]]'; then
report_error "Duplicate Address Detection is taking too long on interface '$Interface'"
return 1
fi
fi
# Add static IPv6 routes after DAD has finished
for route in "${Routes6[@]}"; do
if ! do_debug ip -6 route add $route dev "$Interface"; then
report_error "Could not add route '$route' to interface '$Interface'"
return 1
fi
done
# Set a custom gateway after static routes are added
if [[ $IP6 == @(stateless|static) && $Gateway6 ]]; then
if ! do_debug ip -6 route replace default via "$Gateway6" dev "$Interface"; then
report_error "Could not set gateway '$Gateway6' on interface '$Interface'"
return 1
fi
fi
fi
for line in "${IPCustom[@]}"; do
if ! do_debug ip $line; then
report_error "Could not configure interface ($line)"
return 1
fi
done
if [[ $Hostname ]]; then
if ! do_debug hostnamectl set-hostname "$Hostname"; then
report_error "Cannot set the hostname to '$Hostname'"
return 1
fi
fi
if [[ $DNS ]]; then
resolvconf_add "$Interface" \
"${DNSDomain/#/domain }" \
"${DNSSearch/#/search }" \
"${DNS[@]/#/nameserver }" \
"${DNSOptions[@]/#/options }"
fi
}
## Clean up the IP configuration
# $Interface: interface name
# $IP: type of IPv4 configuration
# $IP6: type of IPv6 configuration
ip_unset() {
[[ $IP == "dhcp" ]] && dhcp_call "${DHCPClient:-dhcpcd}" stop 4
[[ $IP6 == dhcp* ]] && dhcp_call "${DHCP6Client:-dhclient}" stop 6
[[ $DNS ]] && resolvconf -d "$Interface"
ip route flush dev "$Interface" &>/dev/null
ip -6 route flush dev "$Interface" &>/dev/null
ip addr flush dev "$Interface" scope host &>/dev/null
ip addr flush dev "$Interface" scope site &>/dev/null
ip addr flush dev "$Interface" scope global &>/dev/null
}
# vim: ft=sh ts=4 et sw=4:
|
