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