package/network/services/lldpd/files/lldpd.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2008-2015 OpenWrt.org
   3
   4 START=90
   5 STOP=01
   6
   7 CONFIG_LLDPD_WITH_LLDPMED=y
   8
   9 USE_PROCD=1
  10 LLDPDBIN=/usr/sbin/lldpd
  11 LLDPCLI=/usr/sbin/lldpcli
  12 LLDPSOCKET=/var/run/lldpd.socket
  13 LLDPD_CONF=/tmp/lldpd.conf
  14 LLDPD_CONFS_DIR=/tmp/lldpd.d
  15
  16 LLDPD_RUN=/var/run/lldpd
  17 LLDPD_RESTART_HASH=${LLDPD_RUN}/lldpd.restart_hash
  18
  19 . "$IPKG_INSTROOT/lib/functions/network.sh"
  20
  21 find_release_info()
  22 {
  23         [ -s /etc/os-release ] && . /etc/os-release
  24         [ -z "$PRETTY_NAME" ] && [ -s /etc/openwrt_version ] && \
  25                 PRETTY_NAME="$(cat /etc/openwrt_version)"
  26
  27         echo "${PRETTY_NAME:-Unknown OpenWrt release} @ $(cat /proc/sys/kernel/hostname)"
  28 }
  29
  30 get_config_restart_hash() {
  31         local var="$1"
  32         local _string _hash v
  33
  34         config_load 'lldpd'
  35
  36         config_get      v 'config' 'lldp_class'; append _string "$v" ","
  37         config_get      v 'config' 'agentxsocket'; append _string "$v" ","
  38         config_get      v 'config' 'cid_interface'; append _string "$v" ","
  39         config_get      v 'config' 'filter'; append _string "$v" ","
  40         config_get_bool v 'config' 'readonly_mode'; append _string "$v" ","
  41         config_get_bool v 'config' 'lldp_no_version'; append _string "$v" ","
  42         if [ "$CONFIG_LLDPD_WITH_LLDPMED" == "y" ]; then
  43                 config_get_bool v 'config' 'lldpmed_no_inventory'; append _string "$v" ","
  44         fi
  45         config_get_bool v 'config' 'enable_lldp' 1; append _string "$v" ","
  46         config_get_bool v 'config' 'enable_cdp'; append _string "$v" ","
  47         config_get_bool v 'config' 'enable_edp'; append _string "$v" ","
  48         config_get_bool v 'config' 'enable_fdp'; append _string "$v" ","
  49         config_get_bool v 'config' 'enable_sonmp'; append _string "$v" ","
  50
  51         _hash=`echo -n "${_string}" | md5sum | awk '{ print \$1 }'`
  52         export -n "$var=$_hash"
  53 }
  54
  55 get_config_cid_ifaces() {
  56         local _ifaces
  57         config_get _ifaces 'config' 'cid_interface'
  58
  59         local _iface _ifnames=""
  60         for _iface in $_ifaces; do
  61                 local _ifname=""
  62                 if network_get_device _ifname "$_iface" || [ -e "/sys/class/net/$_iface" ]; then
  63                         append _ifnames "${_ifname:-$_iface}" ","
  64                 fi
  65         done
  66
  67         export -n "${1}=$_ifnames"
  68 }
  69
  70 write_lldpd_conf()
  71 {
  72         local lldp_description
  73
  74         config_load 'lldpd'
  75         config_get lldp_description 'config' 'lldp_description' "$(find_release_info)"
  76
  77         local lldp_hostname
  78         config_get lldp_hostname 'config' 'lldp_hostname' "$(cat /proc/sys/kernel/hostname)"
  79
  80         local ifaces
  81         config_get ifaces 'config' 'interface'
  82
  83         local iface ifnames=""
  84         for iface in $ifaces; do
  85                 local ifname=""
  86                 if network_get_device ifname "$iface" || [ -e "/sys/class/net/$iface" ]; then
  87                         append ifnames "${ifname:-$iface}" ","
  88                 fi
  89         done
  90
  91         local lldp_mgmt_ip
  92         config_get lldp_mgmt_ip 'config' 'lldp_mgmt_ip'
  93
  94         local lldp_syscapabilities
  95         config_get lldp_syscapabilities 'config' 'lldp_syscapabilities'
  96
  97         # Clear out the config file first
  98         echo -n > "$LLDPD_CONF"
  99         [ -n "$ifnames" ] && echo "configure system interface pattern" "$ifnames" >> "$LLDPD_CONF"
 100         [ -n "$lldp_description" ] && echo "configure system description" "\"$lldp_description\"" >> "$LLDPD_CONF"
 101         [ -n "$lldp_hostname" ] && echo "configure system hostname" "\"$lldp_hostname\"" >> "$LLDPD_CONF"
 102         [ -n "$lldp_mgmt_ip" ] && echo "configure system ip management pattern" "\"$lldp_mgmt_ip\"" >> "$LLDPD_CONF"
 103         [ -n "$lldp_syscapabilities" ] && echo "configure system capabilities enabled" "\"$lldp_syscapabilities\"" >> "$LLDPD_CONF"
 104
 105         # Since lldpd's sysconfdir is /tmp, we'll symlink /etc/lldpd.d to /tmp/$LLDPD_CONFS_DIR
 106         [ -e $LLDPD_CONFS_DIR ] || ln -s /etc/lldpd.d $LLDPD_CONFS_DIR
 107 }
 108
 109 start_service() {
 110
 111         local enable_cdp
 112         local enable_fdp
 113         local enable_sonmp
 114         local enable_edp
 115         local lldp_class
 116         local lldp_location
 117         local lldp_no_version
 118         local lldpmed_no_inventory
 119         local readonly_mode
 120         local agentxsocket
 121         local filter
 122
 123         config_load 'lldpd'
 124         config_get_bool enable_cdp 'config' 'enable_cdp' 0
 125         config_get_bool enable_fdp 'config' 'enable_fdp' 0
 126         config_get_bool enable_sonmp 'config' 'enable_sonmp' 0
 127         config_get_bool enable_edp 'config' 'enable_edp' 0
 128         config_get lldp_class 'config' 'lldp_class'
 129         config_get lldp_location 'config' 'lldp_location'
 130         config_get_bool lldp_no_version 'config' 'lldp_no_version' 0
 131         if [ "$CONFIG_LLDPD_WITH_LLDPMED" == "y" ]; then
 132                 config_get_bool lldpmed_no_inventory 'config' 'lldpmed_no_inventory' 0
 133         fi
 134         config_get_bool readonly_mode 'config' 'readonly_mode' 0
 135         config_get agentxsocket 'config' 'agentxsocket'
 136         config_get filter 'config' 'filter' 15
 137
 138         mkdir -p ${LLDPD_RUN}
 139         chown lldp:lldp ${LLDPD_RUN}
 140
 141         # When lldpd starts, it also loads up what we write in this config file
 142         write_lldpd_conf
 143
 144         procd_open_instance
 145         procd_set_param command ${LLDPDBIN}
 146         procd_append_param command -d
 147
 148         [ $enable_cdp -gt 0 ] && procd_append_param command '-c'
 149         [ $enable_fdp -gt 0 ] && procd_append_param command '-f'
 150         [ $enable_sonmp -gt 0 ] && procd_append_param command '-s'
 151         [ $enable_edp -gt 0 ] && procd_append_param command '-e'
 152         [ $readonly_mode -gt 0 ] && procd_append_param command '-r'
 153         [ $lldp_no_version -gt 0 ] && procd_append_param command '-k'
 154         [ "$CONFIG_LLDPD_WITH_LLDPMED" == "y" ] && [ $lldpmed_no_inventory -gt 0 ] && procd_append_param command '-i'
 155         [ -n "$lldp_class" ] && procd_append_param command -M "$lldp_class"
 156         [ -n "$agentxsocket" ] && procd_append_param command -x -X "$agentxsocket"
 157         [ -n "$filter" ] && procd_append_param command -H "$filter"
 158
 159     # ChassisID interfaces
 160         local ifnames
 161         get_config_cid_ifaces ifnames
 162         [ -n "$ifnames" ] && procd_append_param command -C "$ifnames"
 163
 164     # Overwrite default configuration locations processed by lldpcli at start
 165         procd_append_param command -O "$LLDPD_CONF"
 166
 167         local restart_hash
 168         get_config_restart_hash restart_hash
 169         echo -n "$restart_hash" > $LLDPD_RESTART_HASH
 170
 171         # set auto respawn behavior
 172         procd_set_param respawn
 173         procd_close_instance
 174 }
 175
 176 service_triggers() {
 177         procd_add_config_trigger "config.change" "lldpd" /etc/init.d/lldpd reload
 178 }
 179
 180 reload_service() {
 181         running || return 1
 182
 183         local running_hash=""
 184         local config_hash=""
 185
 186         get_config_restart_hash config_hash
 187         if [ -f ${LLDPD_RESTART_HASH} ]; then running_hash=`cat $LLDPD_RESTART_HASH`; fi
 188
 189         if [ "x$running_hash" != "x$config_hash" ]; then
 190                 # Restart LLDPd
 191                 # Some parameters can't be configured at runtime
 192                 restart
 193                 return 0
 194         fi
 195
 196         $LLDPCLI -u $LLDPSOCKET &> /dev/null <<-EOF
 197                 pause
 198                 unconfigure lldp custom-tlv
 199                 unconfigure system interface pattern
 200                 unconfigure system description
 201                 unconfigure system hostname
 202                 unconfigure system ip management pattern
 203         EOF
 204         # Rewrite lldpd.conf
 205         # If something changed it should be included by the lldpcli call
 206         write_lldpd_conf
 207         $LLDPCLI -u $LLDPSOCKET -c $LLDPD_CONF -c $LLDPD_CONFS_DIR &> /dev/null
 208         # Broadcast update over the wire
 209         $LLDPCLI -u $LLDPSOCKET &> /dev/null <<-EOF
 210                 resume
 211                 update
 212         EOF
 213         return 0
 214 }
 215
 216 stop_service() {
 217         rm -rf ${LLDPD_RUN} $LLDPSOCKET 2>/dev/null
 218 }
 219