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