dns323-op.sh

   1 #!/bin/bash
   2
   3 #########################################################################
   4 # This program is free software: you can redistribute it and/or modify  #
   5 # it under the terms of the version 3 of the GNU General Public License #
   6 # as published by the Free Software Foundation.                         #
   7 #                                                                       #
   8 # This program is distributed in the hope that it will be useful, but   #
   9 # WITHOUT ANY WARRANTY; without even the implied warranty of            #
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      #
  11 # General Public License for more details.                              #
  12 #                                                                       #
  13 # You should have received a copy of the GNU General Public License     #
  14 # along with this program. If not, see <http://www.gnu.org/licenses/>.  #
  15 #                                                                       #
  16 # Written by and Copyright (C) Francois Fleuret                         #
  17 # Contact <francois@fleuret.org> for comments & bug reports             #
  18 #########################################################################
  19
  20 # A command-line tool to restart, shutdown or get the status of a
  21 # D-Link DNS323.
  22
  23 set -e
  24
  25 function rm_temp () {
  26     if [[ ${TMP} ]]; then
  27         rm ${TMP}
  28         unset TMP
  29     fi
  30 }
  31
  32 function authentify_on_dns323 () {
  33     if [[ ! ${already_authentified} ]]; then
  34         echo "Authentifying on ${DNS323_HOSTNAME}."
  35         curl -s > /dev/null \
  36             -L http://${DNS323_HOSTNAME}/goform/formLogin \
  37             -d "f_LOGIN_NAME=admin&f_LOGIN_PASSWD=${DNS323_ADMIN_PASSWORD}&f_login_type=0" \
  38             || (echo "Failed." >&2 && exit 1)
  39         already_authentified=1
  40     fi
  41 }
  42
  43 function check_unmounted () {
  44     if [[ ! ${force_operation} ]]; then
  45         if [[ $(mount | grep ^//${DNS323_HOSTNAME}) ]]; then
  46             echo "//${DNS323_HOSTNAME} appears to be mounted." >&2
  47             exit 1
  48         fi
  49     fi
  50 }
  51
  52 function show_help () {
  53     cat >&2 <<EOF
  54 $(basename $0) [-f|--force] [-h|--help] <status|restart|shutdown> ...
  55
  56   -h, --help     shows this help.
  57   -f, --force    forces shutdown or restart even if it looks like the samba
  58                  drive is mounted.
  59   status         gets temperature and RAID info.
  60   shutdown       shuts the unit down.
  61   restart        restarts the unit.
  62
  63 EOF
  64 }
  65
  66 ######################################################################
  67
  68 trap rm_temp SIGHUP SIGINT SIGQUIT SIGABRT SIGTERM ERR
  69
  70 if [[ ${DNS323_HOSTNAME} ]] && \
  71     [[ ${DNS323_ADMIN_PASSWORD} ]]; then
  72
  73     while [[ $1 ]]; do
  74
  75         case $1 in
  76
  77             ################################################################
  78
  79             -f|--force)
  80                 force_operation=1
  81                 ;;
  82
  83             ################################################################
  84
  85             -h|--help)
  86                 show_help
  87                 ;;
  88
  89             ################################################################
  90
  91             status)
  92
  93                 authentify_on_dns323
  94
  95                 # If you think what follows is fugly, please have a
  96                 # look at the DNS323's web app HTML
  97
  98                 TMP=$(mktemp /tmp/status.XXXXXX)
  99
 100                 curl -s \
 101                     -L http://${DNS323_HOSTNAME}/goform/adv_status \
 102                     -d "" > ${TMP}
 103
 104                 cat ${TMP} | \
 105                     html2text | \
 106                     grep "\(Sync Time Remaining\|Volume Name\|Volume Type\|Total Hard Drive Capacity\|Used Space\|Unused Space\)": | \
 107                     sed -e "s/^[ \t]*//" | while read line; do
 108                     label=$(echo ${line} | sed -e "s/:.*$//")
 109                     value=$(echo ${line} | sed -e "s/^[^0-9]*\([0-9]*\).*$/\1/")
 110                     comment=""
 111                     case ${label} in
 112                         "Total Hard Drive Capacity")
 113                             total=${value}
 114                             ;;
 115                         "Used Space")
 116                             comment="($(((value*100)/total))%)"
 117                             ;;
 118                         "Unused Space")
 119                             comment="($(((value*100)/total))%)"
 120                             ;;
 121                         *)
 122                             ;;
 123                     esac
 124                     echo "${line} ${comment}"
 125                 done
 126
 127                 grep "var temper" ${TMP} | sed -e "s/^.*\"\([0-9]*\):\([0-9]*\)\".*$/Temperature:                \1F \/ \2C/"
 128
 129                 rm_temp
 130
 131                 ;;
 132
 133             ################################################################
 134
 135             shutdown)
 136
 137                 authentify_on_dns323
 138
 139                 check_unmounted
 140
 141                 curl > /dev/null \
 142                     -s \
 143                     -L http://${DNS323_HOSTNAME}/goform/sysShutDown \
 144                     -d ""
 145
 146                 echo "Shutdown initiated."
 147
 148                 ;;
 149
 150             ################################################################
 151
 152             restart)
 153
 154                 authentify_on_dns323
 155
 156                 check_unmounted
 157
 158                 curl -s > /dev/null \
 159                     -L http://${DNS323_HOSTNAME}/goform/System_restart \
 160                     -d ""
 161
 162                 echo "Restart initiated."
 163
 164                 ;;
 165
 166             ################################################################
 167
 168             *)
 169                 echo "Unknown operation $1" >&2
 170                 show_help
 171                 exit 1
 172                 ;;
 173         esac
 174
 175         shift
 176
 177     done
 178
 179 else
 180
 181     echo "Please set \$DNS323_HOSTNAME and \$DNS323_ADMIN_PASSWORD."
 182
 183 fi