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