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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 | 52366a23 | Dimitris Aragiorgis | runlocked $RUNLOCKED_OPTS ebtables -D INPUT -i $INTERFACE -j $FROM |
37 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -D FORWARD -o $INTERFACE -j $TO |
38 | 52366a23 | Dimitris Aragiorgis | runlocked $RUNLOCKED_OPTS ebtables -D OUTPUT -o $INTERFACE -j $TO |
39 | 38305e4c | Dimitris Aragiorgis | |
40 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -X $FROM |
41 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -X $TO |
42 | 38305e4c | Dimitris Aragiorgis | } |
43 | 38305e4c | Dimitris Aragiorgis | |
44 | 38305e4c | Dimitris Aragiorgis | |
45 | 38305e4c | Dimitris Aragiorgis | function clear_nfdhcpd { |
46 | 38305e4c | Dimitris Aragiorgis | |
47 | 38305e4c | Dimitris Aragiorgis | rm $NFDHCPD_STATE_DIR/$INTERFACE |
48 | 38305e4c | Dimitris Aragiorgis | |
49 | 38305e4c | Dimitris Aragiorgis | } |
50 | 38305e4c | Dimitris Aragiorgis | |
51 | 38305e4c | Dimitris Aragiorgis | |
52 | 38305e4c | Dimitris Aragiorgis | function routed_setup_ipv4 { |
53 | 38305e4c | Dimitris Aragiorgis | |
54 | 0363b080 | Dimitris Aragiorgis | if [ -z "$INTERFACE" -o -z "$NETWORK_GATEWAY" -o -z "$IP" -o -z "$TABLE" ] |
55 | 0363b080 | Dimitris Aragiorgis | then |
56 | 0363b080 | Dimitris Aragiorgis | return |
57 | 0363b080 | Dimitris Aragiorgis | fi |
58 | 0363b080 | Dimitris Aragiorgis | |
59 | 38305e4c | Dimitris Aragiorgis | # mangle ARPs to come from the gw's IP |
60 | 38305e4c | Dimitris Aragiorgis | arptables -A OUTPUT -o $INTERFACE --opcode request -j mangle --mangle-ip-s "$NETWORK_GATEWAY" |
61 | 38305e4c | Dimitris Aragiorgis | |
62 | 38305e4c | Dimitris Aragiorgis | # route interface to the proper routing table |
63 | 38305e4c | Dimitris Aragiorgis | ip rule add dev $INTERFACE table $TABLE |
64 | 38305e4c | Dimitris Aragiorgis | |
65 | 38305e4c | Dimitris Aragiorgis | # static route mapping IP -> INTERFACE |
66 | 38305e4c | Dimitris Aragiorgis | ip route replace $IP proto static dev $INTERFACE table $TABLE |
67 | 38305e4c | Dimitris Aragiorgis | |
68 | 38305e4c | Dimitris Aragiorgis | # Enable proxy ARP |
69 | 38305e4c | Dimitris Aragiorgis | echo 1 > /proc/sys/net/ipv4/conf/$INTERFACE/proxy_arp |
70 | 1bdc9427 | Dimitris Aragiorgis | |
71 | 1bdc9427 | Dimitris Aragiorgis | # Send GARP from host to upstream router |
72 | 1bdc9427 | Dimitris Aragiorgis | get_uplink $TABLE |
73 | 1bdc9427 | Dimitris Aragiorgis | echo 1 > /proc/sys/net/ipv4/ip_nonlocal_bind |
74 | 1bdc9427 | Dimitris Aragiorgis | hooks-log $0 "arping -c3 -I $UPLINK -U $IP" |
75 | 1bdc9427 | Dimitris Aragiorgis | arping -c3 -I $UPLINK -U $IP |
76 | 1bdc9427 | Dimitris Aragiorgis | echo 0 > /proc/sys/net/ipv4/ip_nonlocal_bind |
77 | 1bdc9427 | Dimitris Aragiorgis | |
78 | 38305e4c | Dimitris Aragiorgis | } |
79 | 38305e4c | Dimitris Aragiorgis | |
80 | 38305e4c | Dimitris Aragiorgis | function routed_setup_ipv6 { |
81 | 38305e4c | Dimitris Aragiorgis | # Add a routing entry for the eui-64 |
82 | 1bdc9427 | Dimitris Aragiorgis | get_uplink $TABLE "-6" |
83 | 1bdc9427 | Dimitris Aragiorgis | get_eui64 $MAC $NETWORK_SUBNET6 |
84 | 38305e4c | Dimitris Aragiorgis | |
85 | 1bdc9427 | Dimitris Aragiorgis | if [ -z "$EUI64" -o -z "$TABLE" -o -z "$INTERFACE" -o -z "$UPLINK" ] |
86 | 0363b080 | Dimitris Aragiorgis | then |
87 | 0363b080 | Dimitris Aragiorgis | return |
88 | 0363b080 | Dimitris Aragiorgis | fi |
89 | 38305e4c | Dimitris Aragiorgis | |
90 | 38305e4c | Dimitris Aragiorgis | ip -6 rule add dev $INTERFACE table $TABLE |
91 | 1bdc9427 | Dimitris Aragiorgis | ip -6 ro replace $EUI64/128 dev $INTERFACE table $TABLE |
92 | 1bdc9427 | Dimitris Aragiorgis | ip -6 neigh add proxy $EUI64 dev $UPLINK |
93 | 38305e4c | Dimitris Aragiorgis | |
94 | 38305e4c | Dimitris Aragiorgis | # disable proxy NDP since we're handling this on userspace |
95 | 38305e4c | Dimitris Aragiorgis | # this should be the default, but better safe than sorry |
96 | 38305e4c | Dimitris Aragiorgis | echo 0 > /proc/sys/net/ipv6/conf/$INTERFACE/proxy_ndp |
97 | 1bdc9427 | Dimitris Aragiorgis | |
98 | 1bdc9427 | Dimitris Aragiorgis | # Send Unsolicited Neighbor Advertisement |
99 | 1bdc9427 | Dimitris Aragiorgis | hooks-log $0 "ndsend $EUI64 $UPLINK" |
100 | 1bdc9427 | Dimitris Aragiorgis | ndsend $EUI64 $UPLINK |
101 | 1bdc9427 | Dimitris Aragiorgis | |
102 | 38305e4c | Dimitris Aragiorgis | } |
103 | 38305e4c | Dimitris Aragiorgis | |
104 | 38305e4c | Dimitris Aragiorgis | # pick a firewall profile per NIC, based on tags (and apply it) |
105 | 38305e4c | Dimitris Aragiorgis | function routed_setup_firewall { |
106 | a336b166 | Dimitris Aragiorgis | # for latest ganeti there is no need to check other but uuid |
107 | a336b166 | Dimitris Aragiorgis | ifprefixindex="synnefo:network:$INTERFACE_INDEX:" |
108 | a336b166 | Dimitris Aragiorgis | ifprefixname="synnefo:network:$INTERFACE_NAME:" |
109 | a336b166 | Dimitris Aragiorgis | ifprefixuuid="synnefo:network:$INTERFACE_UUID:" |
110 | 38305e4c | Dimitris Aragiorgis | for tag in $TAGS; do |
111 | a336b166 | Dimitris Aragiorgis | tag=${tag#$ifprefixindex} |
112 | a336b166 | Dimitris Aragiorgis | tag=${tag#$ifprefixname} |
113 | a336b166 | Dimitris Aragiorgis | tag=${tag#$ifprefixuuid} |
114 | a336b166 | Dimitris Aragiorgis | case $tag in |
115 | 38305e4c | Dimitris Aragiorgis | protected) |
116 | 38305e4c | Dimitris Aragiorgis | chain=protected |
117 | 38305e4c | Dimitris Aragiorgis | ;; |
118 | 38305e4c | Dimitris Aragiorgis | unprotected) |
119 | 38305e4c | Dimitris Aragiorgis | chain=unprotected |
120 | 38305e4c | Dimitris Aragiorgis | ;; |
121 | 38305e4c | Dimitris Aragiorgis | limited) |
122 | 38305e4c | Dimitris Aragiorgis | chain=limited |
123 | 38305e4c | Dimitris Aragiorgis | ;; |
124 | 38305e4c | Dimitris Aragiorgis | esac |
125 | 38305e4c | Dimitris Aragiorgis | done |
126 | 38305e4c | Dimitris Aragiorgis | |
127 | 38305e4c | Dimitris Aragiorgis | if [ "x$chain" != "x" ]; then |
128 | 38305e4c | Dimitris Aragiorgis | iptables -A FORWARD -o $INTERFACE -j $chain |
129 | 38305e4c | Dimitris Aragiorgis | ip6tables -A FORWARD -o $INTERFACE -j $chain |
130 | 38305e4c | Dimitris Aragiorgis | fi |
131 | 38305e4c | Dimitris Aragiorgis | } |
132 | 38305e4c | Dimitris Aragiorgis | |
133 | 38305e4c | Dimitris Aragiorgis | function init_ebtables { |
134 | 38305e4c | Dimitris Aragiorgis | |
135 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -N $FROM |
136 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A FORWARD -i $INTERFACE -j $FROM |
137 | 52366a23 | Dimitris Aragiorgis | # This is needed for multicast packets |
138 | 52366a23 | Dimitris Aragiorgis | runlocked $RUNLOCKED_OPTS ebtables -A INPUT -i $INTERFACE -j $FROM |
139 | 52366a23 | Dimitris Aragiorgis | |
140 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -N $TO |
141 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A FORWARD -o $INTERFACE -j $TO |
142 | 52366a23 | Dimitris Aragiorgis | # This is needed for multicast packets |
143 | 52366a23 | Dimitris Aragiorgis | runlocked $RUNLOCKED_OPTS ebtables -A OUTPUT -o $INTERFACE -j $TO |
144 | 38305e4c | Dimitris Aragiorgis | |
145 | 38305e4c | Dimitris Aragiorgis | } |
146 | 38305e4c | Dimitris Aragiorgis | |
147 | 38305e4c | Dimitris Aragiorgis | |
148 | 38305e4c | Dimitris Aragiorgis | function setup_ebtables { |
149 | 38305e4c | Dimitris Aragiorgis | |
150 | 38305e4c | Dimitris Aragiorgis | # do not allow changes in ip-mac pair |
151 | efce42cb | Dimitris Aragiorgis | if [ -n "$IP" ]; then |
152 | efce42cb | Dimitris Aragiorgis | :; # runlocked $RUNLOCKED_OPTS ebtables -A $FROM --ip-source \! $IP -p ipv4 -j DROP |
153 | 38305e4c | Dimitris Aragiorgis | fi |
154 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A $FROM -s \! $MAC -j DROP |
155 | c7b580d5 | Dimitris Aragiorgis | # accept dhcp responses from host (nfdhcpd) |
156 | c7b580d5 | Dimitris Aragiorgis | # this is actually not needed because nfdhcpd opens a socket and binds is with |
157 | c7b580d5 | Dimitris Aragiorgis | # tap interface so dhcp response does not go through bridge |
158 | c7b580d5 | Dimitris Aragiorgis | # runlocked $RUNLOCKED_OPTS ebtables -A $TO -s $INDEV_MAC -p ipv4 --ip-protocol=udp --ip-destination-port=68 -j ACCEPT |
159 | 38305e4c | Dimitris Aragiorgis | # allow only packets from the same mac prefix |
160 | 1409faba | Stratos Psomadakis | runlocked $RUNLOCKED_OPTS ebtables -A $TO -s \! $MAC/$MAC_MASK -j DROP |
161 | 38305e4c | Dimitris Aragiorgis | } |
162 | 38305e4c | Dimitris Aragiorgis | |
163 | 38305e4c | Dimitris Aragiorgis | function setup_masq { |
164 | 38305e4c | Dimitris Aragiorgis | |
165 | 38305e4c | Dimitris Aragiorgis | # allow packets from/to router (for masquerading) |
166 | 1409faba | Stratos Psomadakis | # runlocked $RUNLOCKED_OPTS ebtables -A $TO -s $NODE_MAC -j ACCEPT |
167 | 1409faba | Stratos Psomadakis | # runlocked $RUNLOCKED_OPTS ebtables -A INPUT -i $INTERFACE -j $FROM |
168 | 1409faba | Stratos Psomadakis | # runlocked $RUNLOCKED_OPTS ebtables -A OUTPUT -o $INTERFACE -j $TO |
169 | 38305e4c | Dimitris Aragiorgis | return |
170 | 38305e4c | Dimitris Aragiorgis | |
171 | 38305e4c | Dimitris Aragiorgis | } |
172 | 38305e4c | Dimitris Aragiorgis | |
173 | 38305e4c | Dimitris Aragiorgis | function setup_nfdhcpd { |
174 | 38305e4c | Dimitris Aragiorgis | umask 022 |
175 | 38305e4c | Dimitris Aragiorgis | FILE=$NFDHCPD_STATE_DIR/$INTERFACE |
176 | 38305e4c | Dimitris Aragiorgis | #IFACE is the interface from which the packet seems to arrive |
177 | 38305e4c | Dimitris Aragiorgis | #needed in bridged mode where the packets seems to arrive from the |
178 | 38305e4c | Dimitris Aragiorgis | #bridge and not from the tap |
179 | 38305e4c | Dimitris Aragiorgis | cat >$FILE <<EOF |
180 | 38305e4c | Dimitris Aragiorgis | INDEV=$INDEV |
181 | 38305e4c | Dimitris Aragiorgis | IP=$IP |
182 | 38305e4c | Dimitris Aragiorgis | MAC=$MAC |
183 | 38305e4c | Dimitris Aragiorgis | HOSTNAME=$INSTANCE |
184 | 38305e4c | Dimitris Aragiorgis | TAGS="$TAGS" |
185 | 38305e4c | Dimitris Aragiorgis | GATEWAY=$NETWORK_GATEWAY |
186 | 38305e4c | Dimitris Aragiorgis | SUBNET=$NETWORK_SUBNET |
187 | 38305e4c | Dimitris Aragiorgis | GATEWAY6=$NETWORK_GATEWAY6 |
188 | 38305e4c | Dimitris Aragiorgis | SUBNET6=$NETWORK_SUBNET6 |
189 | 38305e4c | Dimitris Aragiorgis | EUI64=$($MAC2EUI64 $MAC $NETWORK_SUBNET6 2>/dev/null) |
190 | 38305e4c | Dimitris Aragiorgis | EOF |
191 | 38305e4c | Dimitris Aragiorgis | |
192 | 38305e4c | Dimitris Aragiorgis | } |
193 | 38305e4c | Dimitris Aragiorgis | |
194 | 1bdc9427 | Dimitris Aragiorgis | function get_uplink { |
195 | 1bdc9427 | Dimitris Aragiorgis | |
196 | 1bdc9427 | Dimitris Aragiorgis | local table=$1 |
197 | 1bdc9427 | Dimitris Aragiorgis | local version=$2 |
198 | 1bdc9427 | Dimitris Aragiorgis | UPLINK=$(ip "$version" route list table "$table" | grep "default via" | awk '{print $5}') |
199 | 1bdc9427 | Dimitris Aragiorgis | |
200 | 1bdc9427 | Dimitris Aragiorgis | } |
201 | 1bdc9427 | Dimitris Aragiorgis | |
202 | 1bdc9427 | Dimitris Aragiorgis | # Because we do not have IPv6 value in our environment |
203 | 1bdc9427 | Dimitris Aragiorgis | # we caclulate it based on the NIC's MAC and the IPv6 subnet (if any) |
204 | 1bdc9427 | Dimitris Aragiorgis | # first argument MAC second IPv6 subnet |
205 | 1bdc9427 | Dimitris Aragiorgis | # Changes global value EUI64 |
206 | 1bdc9427 | Dimitris Aragiorgis | get_eui64 () { |
207 | 1bdc9427 | Dimitris Aragiorgis | |
208 | 1bdc9427 | Dimitris Aragiorgis | local mac=$1 |
209 | 1bdc9427 | Dimitris Aragiorgis | local prefix=$2 |
210 | 1bdc9427 | Dimitris Aragiorgis | |
211 | 1bdc9427 | Dimitris Aragiorgis | if [ -z "$prefix" ]; then |
212 | 1bdc9427 | Dimitris Aragiorgis | EUI64= |
213 | 1bdc9427 | Dimitris Aragiorgis | else |
214 | 1bdc9427 | Dimitris Aragiorgis | EUI64=$($MAC2EUI64 $mac $prefix) |
215 | 1bdc9427 | Dimitris Aragiorgis | fi |
216 | 1bdc9427 | Dimitris Aragiorgis | |
217 | 1bdc9427 | Dimitris Aragiorgis | } |