ipv6/wide-dhcpv6/files/dhcp6c.init

   1 #!/bin/sh /etc/rc.common
   2
   3 DHCP6C_REQUEST_OPTIONS='domain_name_servers domain_name ntp_servers sip_server_address sip_domain_name nis_server_address nis_domain_name nisp_server_address nisp_domain_name bcmcs_server_address bcmcs_domain_name'
   4
   5 dhcp6c_write_duid() {
   6         local mac="${1:-$(ifconfig "$client_device" | sed -ne 's/[[:space:]]*$//; s/.*HWaddr //p')}"
   7         local pat="[0-9A-F][0-9A-F]"
   8
   9         case "$mac" in
  10                 # exactly 6 octets -> assume type 3 (DUID-LL - RFC3315, 9.4)
  11                 $pat:$pat:$pat:$pat:$pat:$pat)
  12                         local oIFS="$IFS"; IFS=":"; set -- $mac; IFS="$oIFS"
  13
  14                         # low endian
  15                         if [ "$(printf \\1 | hexdump -n1 -ve '8/2 "" "%04x" ""')" = "0001" ]; then
  16                                 printf \\x0a\\x00
  17
  18                         # big endian
  19                         else
  20                                 printf \\x00\\x0a
  21                         fi
  22
  23                         printf \\x00\\x03\\x00\\x06\\x$1\\x$2\\x$3\\x$4\\x$5\\x$6
  24                         logger -t dhcp6c "Using MAC address DUID 00:03:00:06:$1:$2:$3:$4:$5:$6"
  25                 ;;
  26                 # at least 7 octets -> could be type 1 or type 2
  27                 $pat:$pat:$pat:$pat:$pat:$pat:*)
  28                         local len_id=":$(echo "$mac" | sed -e 's/[^:]//g')"
  29                         local len_hi=$(printf "%02x" $((${#len_id} / 0xFF)) )
  30                         local len_lo=$(printf "%02x" $((${#len_id} % 0xFF)) )
  31
  32                         # low endian
  33                         if [ "$(printf \\1 | hexdump -n1 -ve '8/2 "" "%04x" ""')" = "0001" ]; then
  34                                 printf \\x$len_lo\\x$len_hi
  35
  36                         # big endian
  37                         else
  38                                 printf \\x$len_hi\\x$len_lo
  39                         fi
  40
  41                         printf $(echo "$mac" | sed -e 's/^/\\x/; s/:/\\x/g')
  42                         logger -t dhcp6c "Using user provided DUID $mac"
  43                 ;;
  44                 *)
  45                         logger -t dhcp6c "Unable to derive DUID from interface '$client_device' and no valid user DUID given"
  46                 ;;
  47         esac
  48 }
  49
  50 dhcp6c_write_interface() {
  51         local cfg=$1
  52         local sla_id
  53         local sla_len
  54         local enabled
  55         local device
  56
  57         config_get_bool enabled "$cfg" enabled 0
  58
  59         if [ $enabled -ne 0 ]; then
  60                 config_get sla_id "$cfg" sla_id
  61                 config_get sla_len "$cfg" sla_len
  62
  63                 network_get_device device "$cfg" && {
  64                         printf '\tprefix-interface %s {\n' "$device"
  65                         printf '\t\tsla-id %s;\n' "$sla_id"
  66                         printf '\t\tsla-len %s;\n' "$sla_len"
  67                         printf '\t};\n'
  68                 }
  69         fi
  70 }
  71
  72 dhcp6c_write_request() {
  73         printf '\trequest %s;\n' $1 | sed -e s/_/-/g
  74 }
  75
  76 dhcp6c_write_config() {
  77         local pd
  78         local na
  79         config_get_bool pd basic pd 0
  80         config_get_bool na basic na 0
  81
  82         printf 'interface %s {\n' "$client_ifname"
  83
  84         if [ $pd -ne 0 ]; then
  85                 printf '\tsend ia-pd 0;\n'
  86         fi
  87
  88         if [ $na -ne 0 ]; then
  89                 printf '\tsend ia-na 0;\n'
  90         fi
  91
  92         local rapid_commit
  93         config_get_bool rapid_commit basic rapid_commit 0
  94         [ $rapid_commit -ne 0 ] && printf '\tsend rapid-commit;\n'
  95
  96         local script
  97         config_get script basic script
  98         [ "$script" != "" ] && printf '\tscript "%s";\n' "$script"
  99
 100         local request
 101         local value
 102         for request in $DHCP6C_REQUEST_OPTIONS; do
 103                 config_get_bool value basic "$request" 0
 104                 [ $value -ne 0 ] && dhcp6c_write_request "$request"
 105         done
 106
 107         printf '};\n\n'
 108
 109         if [ $pd -ne 0 ]; then
 110                 printf 'id-assoc pd 0 {\n'
 111                 config_foreach dhcp6c_write_interface interface
 112                 printf '};\n\n'
 113         fi
 114
 115         if [ $na -ne 0 ]; then
 116                 printf 'id-assoc na 0 {\n'
 117                 printf '};\n\n'
 118         fi
 119
 120         return 0
 121 }
 122
 123 start() {
 124         [ ! -e /etc/dhcp6cctlkey ] && `dd if=/dev/urandom count=1 2> /dev/null | md5sum | cut -d" " -f1 > /etc/dhcp6cctlkey`
 125
 126         [ -e /var/run/dhcp6c.pid ] && return 0
 127
 128         . /lib/functions/network.sh
 129
 130         config_load "dhcp6c"
 131
 132         local enabled
 133         config_get_bool enabled basic enabled 0
 134         [ $enabled -eq 0 ] && return 0
 135
 136         local user_duid
 137         config_get user_duid basic duid
 138
 139         logger -t dhcp6c starting dhcp6c
 140
 141         local client_interface client_ifname client_device
 142         config_get client_interface basic interface
 143         network_get_device  client_ifname "$client_interface"
 144         network_get_physdev client_device "$client_interface" || client_device="$client_ifname"
 145
 146         local config_file="/var/etc/dhcp6c.conf"
 147         local duid_file="/var/dhcp6c_duid"
 148         mkdir -m 755 -p /var/etc
 149         dhcp6c_write_config > $config_file
 150         dhcp6c_write_duid "$user_duid" > $duid_file
 151
 152         local debug
 153         local debug_option
 154         config_get_bool debug basic debug 0
 155         [ $debug -eq 1 ] && debug_option="-D"
 156         /usr/sbin/dhcp6c -c $config_file $debug_option $client_ifname
 157
 158         sleep 3
 159         ACTION=start /sbin/hotplug-call dhcp6c
 160
 161         return 0
 162 }
 163
 164 stop() {
 165         logger -t dhcp6c stopping dhcp6c
 166         service_kill dhcp6c /var/run/dhcp6c.pid
 167         rm -f /var/etc/dhcp6c.conf /var/run/dhcp6c.pid
 168         ACTION=stop /sbin/hotplug-call dhcp6c
 169         return 0
 170 }
 171
 172