modules/freifunk/root/usr/sbin/remote-update

   1 #!/bin/sh
   2
   3 local tempfile=/tmp/remote-upgrade.img
   4 local D2='\([0-9]\{2\}\)'
   5 local D4='\([0-9]\{4\}\)'
   6 local NL='
   7 '
   8
   9 find_architecture()
  10 {
  11         opkg list_installed 'base-files-*' | \
  12                 sed -ne 's/base-files-\([^ ]\+\).*/\1/p'
  13 }
  14
  15 find_image()
  16 {
  17         case "$1" in
  18                 atheros)
  19                         if grep -q '"vmlinux.bin.l7"' /proc/mtd; then
  20                                 echo "openwrt-fonera-combined.img"
  21                         else
  22                                 echo "openwrt-ubiquity-combined.img"
  23                         fi
  24                 ;;
  25                 brcm-2.4)
  26                         echo "openwrt-brcm-2.4-squashfs.trx"
  27                 ;;
  28         esac
  29 }
  30
  31 check_image()
  32 {
  33         local file; for file in /lib/upgrade/*.sh; do . $file; done
  34         if platform_check_image "$1" >/dev/null 2>/dev/null; then
  35                 return 0
  36         fi
  37         return 1
  38 }
  39
  40 find_remote_checksum()
  41 {
  42         wget -qO- ${1%/*}/md5sums 2>/dev/null | \
  43                 sed -ne '/'$2'/ { s/ .*//p }'
  44 }
  45
  46 find_local_checksum()
  47 {
  48         set -- $(md5sum "$tempfile")
  49         echo $1
  50 }
  51
  52 find_remote_version()
  53 {
  54         wget -qO- "${1%/*}/VERSION.txt" 2>/dev/null | \
  55                 sed -ne "s!.*$D4/$D2/$D2 $D2:$D2.*!\\1\\2\\3\\4\\5!p;t"
  56 }
  57
  58 find_local_version()
  59 {
  60         if [ -f /rom/etc/banner ]; then
  61                 sed -ne "s!.*$D4/$D2/$D2 $D2:$D2.*!\\1\\2\\3\\4\\5!p;t" \
  62                         /rom/etc/banner
  63         else
  64                 date +"%Y%m%d%H%M" -r /bin/sh
  65         fi
  66 }
  67
  68 stop_service()
  69 {
  70         [ -x /etc/init.d/$1 ] && {
  71                 echo -n "Stopping service $1 ... "
  72                 /etc/init.d/$1 stop >/dev/null 2>/dev/null
  73                 echo "done"
  74         }
  75 }
  76
  77 do_wait()
  78 {
  79         if [ ${1:-0} -gt 0 ]; then
  80                 echo -n "${2:-Waiting} "
  81                 for i in $(seq 1 $1); do
  82                         printf "%-2dseconds" $(($1-$i))
  83                         sleep 1
  84                         echo -en "\b\b\b\b\b\b\b\b\b"
  85                 done
  86                 echo "${NL}"
  87         fi
  88 }
  89
  90 version_compare()
  91 {
  92         local v1="$1"
  93         local v2="$2"
  94
  95         while [ -n "$v1" -o -n "$v2" ]; do
  96                 if [ -z "${v2:0:4}" -o "${v1:0:4}" -gt "${v2:0:4}" ]; then
  97                         return 1
  98                 elif [ -z "${v1:0:4}" -o "${v1:0:4}" -lt "${v2:0:4}" ]; then
  99                         return 2
 100                 fi
 101
 102                 v1="${v1:4}"
 103                 v2="${v2:4}"
 104         done
 105
 106         return 0
 107 }
 108
 109 usage()
 110 {
 111         cat <<EOT
 112
 113 Usage:
 114   remote-update -h
 115   remote-update [-u <update url>] -c
 116   remote-update [-v] [-y] [-u <update url>] -w
 117   remote-update [-d] [-n] [-v] [-y] [-s <sleep seconds>] [-u <update url>]
 118
 119 Actions:
 120   -h    Display this help message and exit.
 121   -c    Check for firmware update and exit.
 122   -w    Fetch image and exit, do not perform flash write.
 123
 124 Options:
 125   -d    Do not detach from terminal.
 126   -n    Do not backup configuration.
 127   -v    Skip verification of downloaded image.
 128   -y    Assume defaults for all questions.
 129
 130   -s <seconds>
 131     Sleep given amount of seconds before starting flash write.
 132     If ommitted and '-y' is not used, 5 seconds are assumed.
 133
 134   -u <url>
 135     Fetch firmware image from given url. A file "md5sums" is expected
 136     in the same remote directory. If there is no such file, use -v to
 137     suppress verification.
 138
 139 EOT
 140
 141         exit 1
 142 }
 143
 144
 145 while getopts "s:u:cdnvwyh" flag; do
 146         case $flag in
 147                 s) sleeptime="$OPTARG";;
 148                 u) updateurl="$OPTARG";;
 149                 c) checkupdate=1;;
 150                 d) nodetach=1;;
 151                 n) nobackup=1;;
 152                 v) noverify=1;;
 153                 w) noflash=1;;
 154                 y) noquestions=1;;
 155                 *) usage;;
 156         esac
 157 done
 158
 159
 160 local image_url="$updateurl"
 161 local image_name="${image_url##*/}"
 162
 163 [ -z "$image_url" ] && {
 164         local arch=$(find_architecture)
 165         local image=$(find_image "$arch")
 166         local repo=$(uci get freifunk.upgrade.repository 2>/dev/null)
 167
 168         [ -z "$arch" ] && {
 169                 echo "Can not determine the current architecture."
 170                 exit 1
 171         }
 172
 173         [ -z "$repo" ] && {
 174                 echo "No repository configured in 'freifunk.upgrade.repository'."
 175                 echo "Use the '-u' flag to specify an image location."
 176                 exit 1
 177         }
 178
 179         [ -z "$image" ] && {
 180                 echo "No suitable image for the '$arch' architecture."
 181                 echo "Your platform is not supported."
 182                 exit 1
 183         }
 184
 185         echo "Architecture: $arch"
 186         echo "Repository:   $repo"
 187
 188         image_name="$image"
 189         image_url="${repo%/}/$arch/$image"
 190 }
 191
 192
 193 if [ "$checkupdate" = 1 ]; then
 194         local v1=$(find_local_version)
 195         local v2=$(find_remote_version "$image_url")
 196
 197         [ -n "$v1" -a -n "$v2" ] && {
 198                 version_compare "$v1" "$v2"
 199                 [ $? == 2 ] && {
 200                         echo "Update available! $v1 -> $v2"
 201                 } || {
 202                         echo "Local version $v1 is up to date"
 203                 }
 204         } || {
 205                 echo "No remote time stamp found."
 206                 exit 1
 207         }
 208 else
 209         if [ "$noquestions" != 1 ]; then
 210                 echo -n "${NL}About to download $image_name. Continue? [y] "
 211                 read answer
 212                 case "$answer" in
 213                         [nN]) exit 1;;
 214                 esac
 215         fi
 216
 217         echo -n "Downloading $image_name ... "
 218         rm -f $tempfile
 219         wget -qO $tempfile "$image_url" 2>/dev/null
 220         [ $? == 0 ] && echo done || {
 221                 echo failed
 222                 rm -f $tempfile
 223                 exit 1
 224         }
 225
 226         if [ "$noverify" != 1 ]; then
 227                 echo -n "Verifying $image_name ... "
 228
 229                 local md5_remote=$(find_remote_checksum "$image_url" "$image_name")
 230                 local md5_local=$(find_local_checksum)
 231
 232                 check_image "$tempfile"
 233                 local image_ok=$?
 234
 235                 if [ $image_ok = 0 -a -n "$md5_remote" -a -n "$md5_local" -a "$md5_remote" = "$md5_local" ]; then
 236                         echo "done"
 237                 else
 238                         if [ $image_ok != 0 ]; then
 239                                 echo "unsupported image type"
 240                         else
 241                                 echo "checksum mismatch! (local:${md5_local:-(none)} remote:${md5_remote:-(none)})"
 242                         fi
 243
 244                         local answer=n
 245                         if [ "$noquestions" != 1 ]; then
 246                                 echo -n "${NL}Verification failed. Continue anyway? [n] "
 247                                 read answer
 248                         fi
 249
 250                         case "$answer" in
 251                                 [yYjJ]*) : ;;
 252                                 *)
 253                                         echo "Aborting."
 254                                         rm -f $tempfile
 255                                         exit 1
 256                                 ;;
 257                         esac
 258                 fi
 259         fi
 260
 261         if [ "$noflash" != 1 ]; then
 262                 if [ -f "$tempfile" ]; then
 263                         if [ "$noquestions" == 1 ]; then
 264                                 do_wait ${sleeptime:-5} "${NL}About to start flashing, hit <Ctrl-C> to abort!${NL}${NL}Starting in"
 265                         else
 266                                 if [ -z "$nobackup" ]; then
 267                                         echo -n "${NL}Keep configuration files? [y] "
 268                                         read answer
 269                                         case "$answer" in
 270                                                 [nN]) nobackup=1;;
 271                                         esac
 272                                 fi
 273
 274                                 echo -n "${NL}About to start flashing!${NL}Hit <Enter> to continue or <Ctrl-C> to abort.${NL}"
 275                                 read answer
 276                         fi
 277
 278                         for s in lucid collectd; do stop_service $s; done
 279
 280                         if [ "$nodetach" != 1 ]; then
 281                                 echo -n "Starting sysupgrade in background ... "
 282                                 /bin/busybox start-stop-daemon -S -b -x /sbin/sysupgrade -- ${nobackup:+-n} "$tempfile"
 283                                 echo "done"
 284                         else
 285                                 echo "Executing sysupgrade ... "
 286                                 exec /sbin/sysupgrade ${nobackup:+-n} "$tempfile"
 287                         fi
 288                 else
 289                         echo "No upgrade image found!"
 290                         exit 1
 291                 fi
 292         else
 293                 echo "Image saved in '$tempfile'"
 294         fi
 295 fi