OpenWrt – Blame information for rev 1

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1 office 1 #!/bin/sh
2 # 6in4.sh - IPv6-in-IPv4 tunnel backend
3 # Copyright (c) 2010-2015 OpenWrt.org
4  
5 [ -n "$INCLUDE_ONLY" ] || {
6 . /lib/functions.sh
7 . /lib/functions/network.sh
8 . ../netifd-proto.sh
9 init_proto "$@"
10 }
11  
12 proto_6in4_update() {
13 sh -c '
14 timeout=5
15  
16 (while [ $((timeout--)) -gt 0 ]; do
17 sleep 1
18 kill -0 $$ || exit 0
19 done; kill -9 $$) 2>/dev/null &
20  
21 exec "$@"
22 ' "$1" "$@"
23 }
24  
25 proto_6in4_add_prefix() {
26 append "$3" "$1"
27 }
28  
29 proto_6in4_setup() {
30 local cfg="$1"
31 local iface="$2"
32 local link="6in4-$cfg"
33  
34 local mtu ttl tos ipaddr peeraddr ip6addr ip6prefix ip6prefixes tunlink tunnelid username password updatekey
35 json_get_vars mtu ttl tos ipaddr peeraddr ip6addr tunlink tunnelid username password updatekey
36 json_for_each_item proto_6in4_add_prefix ip6prefix ip6prefixes
37  
38 [ -z "$peeraddr" ] && {
39 proto_notify_error "$cfg" "MISSING_ADDRESS"
40 proto_block_restart "$cfg"
41 return
42 }
43  
44 ( proto_add_host_dependency "$cfg" "$peeraddr" "$tunlink" )
45  
46 [ -z "$ipaddr" ] && {
47 local wanif="$tunlink"
48 if [ -z "$wanif" ] && ! network_find_wan wanif; then
49 proto_notify_error "$cfg" "NO_WAN_LINK"
50 return
51 fi
52  
53 if ! network_get_ipaddr ipaddr "$wanif"; then
54 proto_notify_error "$cfg" "NO_WAN_LINK"
55 return
56 fi
57 }
58  
59 proto_init_update "$link" 1
60  
61 [ -n "$ip6addr" ] && {
62 local local6="${ip6addr%%/*}"
63 local mask6="${ip6addr##*/}"
64 [[ "$local6" = "$mask6" ]] && mask6=
65 proto_add_ipv6_address "$local6" "$mask6"
66 proto_add_ipv6_route "::" 0 "" "" "" "$local6/$mask6"
67 }
68  
69 for ip6prefix in $ip6prefixes; do
70 proto_add_ipv6_prefix "$ip6prefix"
71 proto_add_ipv6_route "::" 0 "" "" "" "$ip6prefix"
72 done
73  
74 proto_add_tunnel
75 json_add_string mode sit
76 json_add_int mtu "${mtu:-1280}"
77 json_add_int ttl "${ttl:-64}"
78 [ -n "$tos" ] && json_add_string tos "$tos"
79 json_add_string local "$ipaddr"
80 json_add_string remote "$peeraddr"
81 [ -n "$tunlink" ] && json_add_string link "$tunlink"
82 proto_close_tunnel
83  
84 proto_send_update "$cfg"
85  
86 [ -n "$tunnelid" -a -n "$username" -a \( -n "$password" -o -n "$updatekey" \) ] && {
87 [ -n "$updatekey" ] && password="$updatekey"
88  
89 local http="http"
90 local urlget="uclient-fetch"
91 local urlget_opts="-qO-"
92 local ca_path="${SSL_CERT_DIR:-/etc/ssl/certs}"
93  
94 [ -f /lib/libustream-ssl.so ] && http=https
95 [ "$http" = "https" -a -z "$(find $ca_path -name "*.0" 2>/dev/null)" ] && {
96 urlget_opts="$urlget_opts --no-check-certificate"
97 }
98  
99 local url="$http://ipv4.tunnelbroker.net/nic/update?hostname=$tunnelid"
100 local try=0
101 local max=3
102  
103 (
104 set -o pipefail
105 while [ $((++try)) -le $max ]; do
106 if proto_6in4_update $urlget $urlget_opts --user="$username" --password="$password" "$url" 2>&1 | \
107 sed -e 's,^Killed$,timeout,' -e "s,^,update $try/$max: ," | \
108 logger -t "$link";
109 then
110 logger -t "$link" "updated"
111 return 0
112 fi
113 sleep 5
114 done
115 logger -t "$link" "update failed"
116 )
117 }
118 }
119  
120 proto_6in4_teardown() {
121 local cfg="$1"
122 }
123  
124 proto_6in4_init_config() {
125 no_device=1
126 available=1
127  
128 proto_config_add_string "ipaddr"
129 proto_config_add_string "ip6addr"
130 proto_config_add_array "ip6prefix"
131 proto_config_add_string "peeraddr"
132 proto_config_add_string "tunlink"
133 proto_config_add_string "tunnelid"
134 proto_config_add_string "username"
135 proto_config_add_string "password"
136 proto_config_add_string "updatekey"
137 proto_config_add_int "mtu"
138 proto_config_add_int "ttl"
139 proto_config_add_string "tos"
140 }
141  
142 [ -n "$INCLUDE_ONLY" ] || {
143 add_protocol 6in4
144 }