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                 ar71xx)
  26                         if grep -q '"kernel"' /proc/mtd; then
  27                                 echo "openwrt-ar71xx-combined.img"
  28                         fi
  29                 ;;
  30                 brcm-2.4)
  31                         echo "openwrt-brcm-2.4-squashfs.trx"
  32                 ;;
  33         esac
  34 }
  35
  36 check_image()
  37 {
  38         local file; for file in /lib/upgrade/*.sh; do . $file; done
  39         if platform_check_image "$1" >/dev/null 2>/dev/null; then
  40                 return 0
  41         fi
  42         return 1
  43 }
  44
  45 find_remote_checksum()
  46 {
  47         wget -qO- ${1%/*}/md5sums 2>/dev/null | \
  48                 sed -ne '/'$2'/ { s/ .*//p }'
  49 }
  50
  51 find_local_checksum()
  52 {
  53         set -- $(md5sum "$tempfile")
  54         echo $1
  55 }
  56
  57 find_remote_info()
  58 {
  59         wget -qO- "${1%/*}/VERSION.txt" 2>/dev/null
  60 }
  61
  62 find_remote_version()
  63 {
  64         find_remote_info "$1" | \
  65                 sed -ne "s!.*$D4/$D2/$D2 $D2:$D2.*!\\1\\2\\3\\4\\5!p;t"
  66 }
  67
  68 find_local_version()
  69 {
  70         if [ -f /rom/etc/banner ]; then
  71                 sed -ne "s!.*$D4/$D2/$D2 $D2:$D2.*!\\1\\2\\3\\4\\5!p;t" \
  72                         /rom/etc/banner
  73         else
  74                 date +"%Y%m%d%H%M" -r /bin/sh
  75         fi
  76 }
  77
  78 stop_service()
  79 {
  80         [ -x /etc/init.d/$1 ] && {
  81                 echo -n "Stopping service $1 ... "
  82                 /etc/init.d/$1 stop >/dev/null 2>/dev/null
  83                 echo "done"
  84         }
  85 }
  86
  87 do_wait()
  88 {
  89         if [ ${1:-0} -gt 0 ]; then
  90                 echo -n "${2:-Waiting} "
  91                 for i in $(seq 1 $1); do
  92                         printf "%-2dseconds" $(($1-$i))
  93                         sleep 1
  94                         echo -en "\b\b\b\b\b\b\b\b\b"
  95                 done
  96                 echo "${NL}"
  97         fi
  98 }
  99
 100 version_compare()
 101 {
 102         local v1="$1"
 103         local v2="$2"
 104
 105         while [ -n "$v1" -o -n "$v2" ]; do
 106                 if [ -z "${v2:0:4}" -o "${v1:0:4}" -gt "${v2:0:4}" ]; then
 107                         return 1
 108                 elif [ -z "${v1:0:4}" -o "${v1:0:4}" -lt "${v2:0:4}" ]; then
 109                         return 2
 110                 fi
 111
 112                 v1="${v1:4}"
 113                 v2="${v2:4}"
 114         done
 115
 116         return 0
 117 }
 118
 119 usage()
 120 {
 121         cat <<EOT
 122
 123 Usage:
 124   remote-update -h
 125   remote-update [-u <update url>] -c
 126   remote-update [-v] [-y] [-u <update url>] -w
 127   remote-update [-d] [-n] [-v] [-y] [-s <sleep seconds>] [-u <update url>]
 128
 129 Actions:
 130   -h    Display this help message and exit.
 131   -c    Check for firmware update and exit.
 132   -w    Fetch image and exit, do not perform flash write.
 133
 134 Options:
 135   -d    Do not detach from terminal.
 136   -n    Do not backup configuration.
 137   -v    Skip verification of downloaded image.
 138   -y    Assume defaults for all questions.
 139
 140   -s <seconds>
 141     Sleep given amount of seconds before starting flash write.
 142     If ommitted and '-y' is not used, 5 seconds are assumed.
 143
 144   -u <url>
 145     Fetch firmware image from given url. A file "md5sums" is expected
 146     in the same remote directory. If there is no such file, use -v to
 147     suppress verification.
 148
 149 EOT
 150
 151         exit 1
 152 }
 153
 154
 155 while getopts "s:u:cdnvwyh" flag; do
 156         case $flag in
 157                 s) sleeptime="$OPTARG";;
 158                 u) updateurl="$OPTARG";;
 159                 c) checkupdate=1;;
 160                 d) nodetach=1;;
 161                 n) nobackup=1;;
 162                 v) noverify=1;;
 163                 w) noflash=1;;
 164                 y) noquestions=1;;
 165                 *) usage;;
 166         esac
 167 done
 168
 169
 170 local image_url="$updateurl"
 171 local image_name="${image_url##*/}"
 172
 173 [ -z "$image_url" ] && {
 174         local arch=$(find_architecture)
 175         local image=$(find_image "$arch")
 176         local repo=$(uci get freifunk.upgrade.repository 2>/dev/null)
 177
 178         [ -z "$arch" ] && {
 179                 echo "Can not determine the current architecture."
 180                 exit 1
 181         }
 182
 183         [ -z "$repo" ] && {
 184                 echo "No repository configured in 'freifunk.upgrade.repository'."
 185                 echo "Use the '-u' flag to specify an image location."
 186                 exit 1
 187         }
 188
 189         [ -z "$image" ] && {
 190                 echo "No suitable image for the '$arch' architecture."
 191                 echo "Your platform is not supported."
 192                 exit 1
 193         }
 194
 195         echo "Architecture: $arch"
 196         echo "Repository:   $repo"
 197
 198         image_name="$image"
 199         image_url="${repo%/}/$arch/$image"
 200 }
 201
 202
 203 if [ "$checkupdate" = 1 ]; then
 204         local v1=$(find_local_version)
 205         local v2=$(find_remote_version "$image_url")
 206
 207         [ -n "$v1" -a -n "$v2" ] && {
 208                 version_compare "$v1" "$v2"
 209                 [ $? == 2 ] && {
 210                         echo "Update available!${NL}Local:  $v1${NL}Remote: $v2${NL}--"
 211                         find_remote_info "$image_url"
 212                         exit 0
 213                 } || {
 214                         echo "Local version $v1 is up to date"
 215                         exit 2
 216                 }
 217         } || {
 218                 echo "No remote time stamp found."
 219                 exit 1
 220         }
 221 else
 222         if [ "$noquestions" != 1 ]; then
 223                 echo -n "${NL}About to download $image_name. Continue? [y] "
 224                 read answer
 225                 case "$answer" in
 226                         [nN]) exit 1;;
 227                 esac
 228         fi
 229
 230         echo -n "Downloading $image_name ... "
 231         rm -f $tempfile
 232         wget -qO $tempfile "$image_url" 2>/dev/null
 233         [ $? == 0 ] && echo done || {
 234                 echo failed
 235                 rm -f $tempfile
 236                 exit 1
 237         }
 238
 239         if [ "$noverify" != 1 ]; then
 240                 echo -n "Verifying $image_name ... "
 241
 242                 local md5_remote=$(find_remote_checksum "$image_url" "$image_name")
 243                 local md5_local=$(find_local_checksum)
 244
 245                 check_image "$tempfile"
 246                 local image_ok=$?
 247
 248                 if [ $image_ok = 0 -a -n "$md5_remote" -a -n "$md5_local" -a "$md5_remote" = "$md5_local" ]; then
 249                         echo "done"
 250                 else
 251                         if [ $image_ok != 0 ]; then
 252                                 echo "unsupported image type"
 253                         else
 254                                 echo "checksum mismatch! (local:${md5_local:-(none)} remote:${md5_remote:-(none)})"
 255                         fi
 256
 257                         local answer=n
 258                         if [ "$noquestions" != 1 ]; then
 259                                 echo -n "${NL}Verification failed. Continue anyway? [n] "
 260                                 read answer
 261                         fi
 262
 263                         case "$answer" in
 264                                 [yYjJ]*) : ;;
 265                                 *)
 266                                         echo "Aborting."
 267                                         rm -f $tempfile
 268                                         exit 1
 269                                 ;;
 270                         esac
 271                 fi
 272         fi
 273
 274         if [ "$noflash" != 1 ]; then
 275                 if [ -f "$tempfile" ]; then
 276                         if [ "$noquestions" == 1 ]; then
 277                                 do_wait ${sleeptime:-5} "${NL}About to start flashing, hit <Ctrl-C> to abort!${NL}${NL}Starting in"
 278                         else
 279                                 if [ -z "$nobackup" ]; then
 280                                         echo -n "${NL}Keep configuration files? [y] "
 281                                         read answer
 282                                         case "$answer" in
 283                                                 [nN]) nobackup=1;;
 284                                         esac
 285                                 fi
 286
 287                                 echo -n "${NL}About to start flashing!${NL}Hit <Enter> to continue or <Ctrl-C> to abort.${NL}"
 288                                 read answer
 289                         fi
 290
 291                         for s in lucid collectd; do stop_service $s; done
 292
 293                         if [ "$nodetach" != 1 ]; then
 294                                 echo -n "Starting sysupgrade in background ... "
 295                                 /bin/busybox start-stop-daemon -S -b -x /sbin/sysupgrade -- ${nobackup:+-n} "$tempfile"
 296                                 echo "done"
 297                         else
 298                                 echo "Executing sysupgrade ... "
 299                                 exec /sbin/sysupgrade ${nobackup:+-n} "$tempfile"
 300                         fi
 301                 else
 302                         echo "No upgrade image found!"
 303                         exit 1
 304                 fi
 305         else
 306                 echo "Image saved in '$tempfile'"
 307         fi
 308 fi