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1 | 38305e4c | Dimitris Aragiorgis | #!/bin/bash |
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2 | 38305e4c | Dimitris Aragiorgis | |
3 | 38305e4c | Dimitris Aragiorgis | function try { |
4 | 38305e4c | Dimitris Aragiorgis | |
5 | 38305e4c | Dimitris Aragiorgis | $1 &>/dev/null || true |
6 | 38305e4c | Dimitris Aragiorgis | |
7 | 38305e4c | Dimitris Aragiorgis | } |
8 | 38305e4c | Dimitris Aragiorgis | |
9 | 38305e4c | Dimitris Aragiorgis | function clear_routed_setup_ipv4 { |
10 | 38305e4c | Dimitris Aragiorgis | |
11 | 38305e4c | Dimitris Aragiorgis | arptables -D OUTPUT -o $INTERFACE --opcode request -j mangle |
12 | 38305e4c | Dimitris Aragiorgis | while ip rule del dev $INTERFACE; do :; done |
13 | 38305e4c | Dimitris Aragiorgis | iptables -D FORWARD -i $INTERFACE -p udp --dport 67 -j DROP |
14 | 38305e4c | Dimitris Aragiorgis | |
15 | 38305e4c | Dimitris Aragiorgis | } |
16 | 38305e4c | Dimitris Aragiorgis | |
17 | 38305e4c | Dimitris Aragiorgis | function clear_routed_setup_ipv6 { |
18 | 38305e4c | Dimitris Aragiorgis | |
19 | 38305e4c | Dimitris Aragiorgis | while ip -6 rule del dev $INTERFACE; do :; done |
20 | 38305e4c | Dimitris Aragiorgis | |
21 | 38305e4c | Dimitris Aragiorgis | } |
22 | 38305e4c | Dimitris Aragiorgis | |
23 | 38305e4c | Dimitris Aragiorgis | |
24 | 38305e4c | Dimitris Aragiorgis | function clear_routed_setup_firewall { |
25 | 38305e4c | Dimitris Aragiorgis | |
26 | 38305e4c | Dimitris Aragiorgis | for oldchain in protected unprotected limited; do |
27 | 38305e4c | Dimitris Aragiorgis | iptables -D FORWARD -o $INTERFACE -j $oldchain |
28 | 38305e4c | Dimitris Aragiorgis | ip6tables -D FORWARD -o $INTERFACE -j $oldchain |
29 | 38305e4c | Dimitris Aragiorgis | done |
30 | 38305e4c | Dimitris Aragiorgis | |
31 | 38305e4c | Dimitris Aragiorgis | } |
32 | 38305e4c | Dimitris Aragiorgis | |
33 | 38305e4c | Dimitris Aragiorgis | function clear_ebtables { |
34 | 38305e4c | Dimitris Aragiorgis | |
35 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -D FORWARD -i $INTERFACE -j $FROM |
36 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -D FORWARD -o $INTERFACE -j $TO |
37 | 1409faba | Stratos Psomadakis | #runlocked $RUNLOCKED_OPTS ebtables -D OUTPUT -o $INTERFACE -j $TO |
38 | 38305e4c | Dimitris Aragiorgis | |
39 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -X $FROM |
40 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -X $TO |
41 | 38305e4c | Dimitris Aragiorgis | } |
42 | 38305e4c | Dimitris Aragiorgis | |
43 | 38305e4c | Dimitris Aragiorgis | |
44 | 38305e4c | Dimitris Aragiorgis | function clear_nfdhcpd { |
45 | 38305e4c | Dimitris Aragiorgis | |
46 | 38305e4c | Dimitris Aragiorgis | rm $NFDHCPD_STATE_DIR/$INTERFACE |
47 | 38305e4c | Dimitris Aragiorgis | |
48 | 38305e4c | Dimitris Aragiorgis | } |
49 | 38305e4c | Dimitris Aragiorgis | |
50 | 38305e4c | Dimitris Aragiorgis | |
51 | 38305e4c | Dimitris Aragiorgis | function routed_setup_ipv4 { |
52 | 38305e4c | Dimitris Aragiorgis | |
53 | 0363b080 | Dimitris Aragiorgis | if [ -z "$INTERFACE" -o -z "$NETWORK_GATEWAY" -o -z "$IP" -o -z "$TABLE" ] |
54 | 0363b080 | Dimitris Aragiorgis | then |
55 | 0363b080 | Dimitris Aragiorgis | return |
56 | 0363b080 | Dimitris Aragiorgis | fi |
57 | 0363b080 | Dimitris Aragiorgis | |
58 | 38305e4c | Dimitris Aragiorgis | # mangle ARPs to come from the gw's IP |
59 | 38305e4c | Dimitris Aragiorgis | arptables -A OUTPUT -o $INTERFACE --opcode request -j mangle --mangle-ip-s "$NETWORK_GATEWAY" |
60 | 38305e4c | Dimitris Aragiorgis | |
61 | 38305e4c | Dimitris Aragiorgis | # route interface to the proper routing table |
62 | 38305e4c | Dimitris Aragiorgis | ip rule add dev $INTERFACE table $TABLE |
63 | 38305e4c | Dimitris Aragiorgis | |
64 | 38305e4c | Dimitris Aragiorgis | # static route mapping IP -> INTERFACE |
65 | 38305e4c | Dimitris Aragiorgis | ip route replace $IP proto static dev $INTERFACE table $TABLE |
66 | 38305e4c | Dimitris Aragiorgis | |
67 | 38305e4c | Dimitris Aragiorgis | # Enable proxy ARP |
68 | 38305e4c | Dimitris Aragiorgis | echo 1 > /proc/sys/net/ipv4/conf/$INTERFACE/proxy_arp |
69 | 1bdc9427 | Dimitris Aragiorgis | |
70 | 1bdc9427 | Dimitris Aragiorgis | # Send GARP from host to upstream router |
71 | 1bdc9427 | Dimitris Aragiorgis | get_uplink $TABLE |
72 | 1bdc9427 | Dimitris Aragiorgis | echo 1 > /proc/sys/net/ipv4/ip_nonlocal_bind |
73 | 1bdc9427 | Dimitris Aragiorgis | hooks-log $0 "arping -c3 -I $UPLINK -U $IP" |
74 | 1bdc9427 | Dimitris Aragiorgis | arping -c3 -I $UPLINK -U $IP |
75 | 1bdc9427 | Dimitris Aragiorgis | echo 0 > /proc/sys/net/ipv4/ip_nonlocal_bind |
76 | 1bdc9427 | Dimitris Aragiorgis | |
77 | 38305e4c | Dimitris Aragiorgis | } |
78 | 38305e4c | Dimitris Aragiorgis | |
79 | 38305e4c | Dimitris Aragiorgis | function routed_setup_ipv6 { |
80 | 38305e4c | Dimitris Aragiorgis | # Add a routing entry for the eui-64 |
81 | 1bdc9427 | Dimitris Aragiorgis | get_uplink $TABLE "-6" |
82 | 1bdc9427 | Dimitris Aragiorgis | get_eui64 $MAC $NETWORK_SUBNET6 |
83 | 38305e4c | Dimitris Aragiorgis | |
84 | 1bdc9427 | Dimitris Aragiorgis | if [ -z "$EUI64" -o -z "$TABLE" -o -z "$INTERFACE" -o -z "$UPLINK" ] |
85 | 0363b080 | Dimitris Aragiorgis | then |
86 | 0363b080 | Dimitris Aragiorgis | return |
87 | 0363b080 | Dimitris Aragiorgis | fi |
88 | 38305e4c | Dimitris Aragiorgis | |
89 | 38305e4c | Dimitris Aragiorgis | ip -6 rule add dev $INTERFACE table $TABLE |
90 | 1bdc9427 | Dimitris Aragiorgis | ip -6 ro replace $EUI64/128 dev $INTERFACE table $TABLE |
91 | 1bdc9427 | Dimitris Aragiorgis | ip -6 neigh add proxy $EUI64 dev $UPLINK |
92 | 38305e4c | Dimitris Aragiorgis | |
93 | 38305e4c | Dimitris Aragiorgis | # disable proxy NDP since we're handling this on userspace |
94 | 38305e4c | Dimitris Aragiorgis | # this should be the default, but better safe than sorry |
95 | 38305e4c | Dimitris Aragiorgis | echo 0 > /proc/sys/net/ipv6/conf/$INTERFACE/proxy_ndp |
96 | 1bdc9427 | Dimitris Aragiorgis | |
97 | 1bdc9427 | Dimitris Aragiorgis | # Send Unsolicited Neighbor Advertisement |
98 | 1bdc9427 | Dimitris Aragiorgis | hooks-log $0 "ndsend $EUI64 $UPLINK" |
99 | 1bdc9427 | Dimitris Aragiorgis | ndsend $EUI64 $UPLINK |
100 | 1bdc9427 | Dimitris Aragiorgis | |
101 | 38305e4c | Dimitris Aragiorgis | } |
102 | 38305e4c | Dimitris Aragiorgis | |
103 | 38305e4c | Dimitris Aragiorgis | # pick a firewall profile per NIC, based on tags (and apply it) |
104 | 38305e4c | Dimitris Aragiorgis | function routed_setup_firewall { |
105 | a336b166 | Dimitris Aragiorgis | # for latest ganeti there is no need to check other but uuid |
106 | a336b166 | Dimitris Aragiorgis | ifprefixindex="synnefo:network:$INTERFACE_INDEX:" |
107 | a336b166 | Dimitris Aragiorgis | ifprefixname="synnefo:network:$INTERFACE_NAME:" |
108 | a336b166 | Dimitris Aragiorgis | ifprefixuuid="synnefo:network:$INTERFACE_UUID:" |
109 | 38305e4c | Dimitris Aragiorgis | for tag in $TAGS; do |
110 | a336b166 | Dimitris Aragiorgis | tag=${tag#$ifprefixindex} |
111 | a336b166 | Dimitris Aragiorgis | tag=${tag#$ifprefixname} |
112 | a336b166 | Dimitris Aragiorgis | tag=${tag#$ifprefixuuid} |
113 | a336b166 | Dimitris Aragiorgis | case $tag in |
114 | 38305e4c | Dimitris Aragiorgis | protected) |
115 | 38305e4c | Dimitris Aragiorgis | chain=protected |
116 | 38305e4c | Dimitris Aragiorgis | ;; |
117 | 38305e4c | Dimitris Aragiorgis | unprotected) |
118 | 38305e4c | Dimitris Aragiorgis | chain=unprotected |
119 | 38305e4c | Dimitris Aragiorgis | ;; |
120 | 38305e4c | Dimitris Aragiorgis | limited) |
121 | 38305e4c | Dimitris Aragiorgis | chain=limited |
122 | 38305e4c | Dimitris Aragiorgis | ;; |
123 | 38305e4c | Dimitris Aragiorgis | esac |
124 | 38305e4c | Dimitris Aragiorgis | done |
125 | 38305e4c | Dimitris Aragiorgis | |
126 | 38305e4c | Dimitris Aragiorgis | if [ "x$chain" != "x" ]; then |
127 | 38305e4c | Dimitris Aragiorgis | iptables -A FORWARD -o $INTERFACE -j $chain |
128 | 38305e4c | Dimitris Aragiorgis | ip6tables -A FORWARD -o $INTERFACE -j $chain |
129 | 38305e4c | Dimitris Aragiorgis | fi |
130 | 38305e4c | Dimitris Aragiorgis | } |
131 | 38305e4c | Dimitris Aragiorgis | |
132 | 38305e4c | Dimitris Aragiorgis | function init_ebtables { |
133 | 38305e4c | Dimitris Aragiorgis | |
134 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -N $FROM |
135 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A FORWARD -i $INTERFACE -j $FROM |
136 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -N $TO |
137 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A FORWARD -o $INTERFACE -j $TO |
138 | 38305e4c | Dimitris Aragiorgis | |
139 | 38305e4c | Dimitris Aragiorgis | } |
140 | 38305e4c | Dimitris Aragiorgis | |
141 | 38305e4c | Dimitris Aragiorgis | |
142 | 38305e4c | Dimitris Aragiorgis | function setup_ebtables { |
143 | 38305e4c | Dimitris Aragiorgis | |
144 | 38305e4c | Dimitris Aragiorgis | # do not allow changes in ip-mac pair |
145 | 38305e4c | Dimitris Aragiorgis | if [ -n "$IP"]; then |
146 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A $FROM --ip-source \! $IP -p ipv4 -j DROP |
147 | 38305e4c | Dimitris Aragiorgis | fi |
148 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A $FROM -s \! $MAC -j DROP |
149 | 38305e4c | Dimitris Aragiorgis | #accept dhcp responses from host (nfdhcpd) |
150 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A $TO -p ipv4 --ip-protocol=udp --ip-destination-port=68 -j ACCEPT |
151 | 38305e4c | Dimitris Aragiorgis | # allow only packets from the same mac prefix |
152 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A $TO -s \! $MAC/$MAC_MASK -j DROP |
153 | 38305e4c | Dimitris Aragiorgis | } |
154 | 38305e4c | Dimitris Aragiorgis | |
155 | 38305e4c | Dimitris Aragiorgis | function setup_masq { |
156 | 38305e4c | Dimitris Aragiorgis | |
157 | 38305e4c | Dimitris Aragiorgis | # allow packets from/to router (for masquerading) |
158 | 1409faba | Stratos Psomadakis | # runlocked $RUNLOCKED_OPTS ebtables -A $TO -s $NODE_MAC -j ACCEPT |
159 | 1409faba | Stratos Psomadakis | # runlocked $RUNLOCKED_OPTS ebtables -A INPUT -i $INTERFACE -j $FROM |
160 | 1409faba | Stratos Psomadakis | # runlocked $RUNLOCKED_OPTS ebtables -A OUTPUT -o $INTERFACE -j $TO |
161 | 38305e4c | Dimitris Aragiorgis | return |
162 | 38305e4c | Dimitris Aragiorgis | |
163 | 38305e4c | Dimitris Aragiorgis | } |
164 | 38305e4c | Dimitris Aragiorgis | |
165 | 38305e4c | Dimitris Aragiorgis | function setup_nfdhcpd { |
166 | 38305e4c | Dimitris Aragiorgis | umask 022 |
167 | 38305e4c | Dimitris Aragiorgis | FILE=$NFDHCPD_STATE_DIR/$INTERFACE |
168 | 38305e4c | Dimitris Aragiorgis | #IFACE is the interface from which the packet seems to arrive |
169 | 38305e4c | Dimitris Aragiorgis | #needed in bridged mode where the packets seems to arrive from the |
170 | 38305e4c | Dimitris Aragiorgis | #bridge and not from the tap |
171 | 38305e4c | Dimitris Aragiorgis | cat >$FILE <<EOF |
172 | 38305e4c | Dimitris Aragiorgis | INDEV=$INDEV |
173 | 38305e4c | Dimitris Aragiorgis | IP=$IP |
174 | 38305e4c | Dimitris Aragiorgis | MAC=$MAC |
175 | 38305e4c | Dimitris Aragiorgis | HOSTNAME=$INSTANCE |
176 | 38305e4c | Dimitris Aragiorgis | TAGS="$TAGS" |
177 | 38305e4c | Dimitris Aragiorgis | GATEWAY=$NETWORK_GATEWAY |
178 | 38305e4c | Dimitris Aragiorgis | SUBNET=$NETWORK_SUBNET |
179 | 38305e4c | Dimitris Aragiorgis | GATEWAY6=$NETWORK_GATEWAY6 |
180 | 38305e4c | Dimitris Aragiorgis | SUBNET6=$NETWORK_SUBNET6 |
181 | 38305e4c | Dimitris Aragiorgis | EUI64=$($MAC2EUI64 $MAC $NETWORK_SUBNET6 2>/dev/null) |
182 | 38305e4c | Dimitris Aragiorgis | EOF |
183 | 38305e4c | Dimitris Aragiorgis | |
184 | 38305e4c | Dimitris Aragiorgis | } |
185 | 38305e4c | Dimitris Aragiorgis | |
186 | 1bdc9427 | Dimitris Aragiorgis | function get_uplink { |
187 | 1bdc9427 | Dimitris Aragiorgis | |
188 | 1bdc9427 | Dimitris Aragiorgis | local table=$1 |
189 | 1bdc9427 | Dimitris Aragiorgis | local version=$2 |
190 | 1bdc9427 | Dimitris Aragiorgis | UPLINK=$(ip "$version" route list table "$table" | grep "default via" | awk '{print $5}') |
191 | 1bdc9427 | Dimitris Aragiorgis | |
192 | 1bdc9427 | Dimitris Aragiorgis | } |
193 | 1bdc9427 | Dimitris Aragiorgis | |
194 | 1bdc9427 | Dimitris Aragiorgis | # Because we do not have IPv6 value in our environment |
195 | 1bdc9427 | Dimitris Aragiorgis | # we caclulate it based on the NIC's MAC and the IPv6 subnet (if any) |
196 | 1bdc9427 | Dimitris Aragiorgis | # first argument MAC second IPv6 subnet |
197 | 1bdc9427 | Dimitris Aragiorgis | # Changes global value EUI64 |
198 | 1bdc9427 | Dimitris Aragiorgis | get_eui64 () { |
199 | 1bdc9427 | Dimitris Aragiorgis | |
200 | 1bdc9427 | Dimitris Aragiorgis | local mac=$1 |
201 | 1bdc9427 | Dimitris Aragiorgis | local prefix=$2 |
202 | 1bdc9427 | Dimitris Aragiorgis | |
203 | 1bdc9427 | Dimitris Aragiorgis | if [ -z "$prefix" ]; then |
204 | 1bdc9427 | Dimitris Aragiorgis | EUI64= |
205 | 1bdc9427 | Dimitris Aragiorgis | else |
206 | 1bdc9427 | Dimitris Aragiorgis | EUI64=$($MAC2EUI64 $mac $prefix) |
207 | 1bdc9427 | Dimitris Aragiorgis | fi |
208 | 1bdc9427 | Dimitris Aragiorgis | |
209 | 1bdc9427 | Dimitris Aragiorgis | } |