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