# By Dennis Groenen <tj.groenen@gmail.com>
# GPLv3 licensed
#
-# Last updated: 03-11-2012 (MM-DD-YYYY)
-#
INSTALLDIR="/opt/busybox-power"
EXECPWR="$INSTALLDIR/busybox.power"
-VERBOSE="0"
+DISTBIN="/bin/busybox.distrib"
-ECHO_VERBOSE() {
- if test $VERBOSE == 1; then
- echo -e "$1"; fi
-}
+VERBOSE="0"
+MODIFIEDBIN="0"
-# Detect environment
-CHECK_ENV() {
- if test -d /scratchbox; then
- ENVIRONMENT="SDK"
- else
- PROD=$(cat /proc/component_version | grep product | cut -d" " -f 6)
- case $PROD in
- RX-51)
- ENVIRONMENT="N900"
- ;;
- *)
- # Unsupported, use the least strict environment (SDK)
- ENVIRONMENT="SDK"
- ;;
- esac
- fi
-}
+INSTBINARY_SHA1=`sha1sum $EXECPWR | awk '{ print $1 }'`
+if test -e $DISTBIN; then
+ ORIGBINARY_SHA1=`sha1sum $DISTBIN | awk '{ print $1 }'`; fi
-# Environment-independent checks before continuing
-GENERIC_CHECKS() {
- #if test -n "`pgrep dpkg`" -o "`pgrep apt`"
- if ! lsof /var/lib/dpkg/lock >> /dev/null; then
- echo "error: you're running me as a stand-alone application"
- echo " do not do this, I will be called automatically upon"
- echo " deinstallation of busybox-power"
- exit 1
- fi
+# Load shared functions
+source $INSTALLDIR/functions
+# Check whether we can load the list of created symlinks during installation
+CHECK_SYMLINKSFILE() {
if test ! -e $INSTALLDIR/busybox-power.symlinks; then
- echo -e "Error: cannot find the list of symlinks to be removed. No symlinks will be removed at all!\n" >> /tmp/busybox-power-error
+ echo -e "Warning: cannot find the list of symlinks to be removed. No" \
+ "symlinks will be removed at all!\n" >> /tmp/busybox-power-error
fi
}
-# Additional checks for the N900
-E_N900_CHECKS() {
- if test "`id -u`" -ne 0; then
- echo "error: you're not running me as root, aborting"
- echo " also, DO NOT run me as a stand-alone application"
- echo " I will be called automatically upon deinstallation"
- echo " of busybox-power"
- exit 1
+# Check the (integrity) of our BusyBox backup
+CHECK_BACKUP() {
+ # Firstly, check whether the backup still exists
+ if test ! -e $DISTBIN; then
+ if test "$ENVIRONMENT" == "SDK"; then return; fi # SDK comes without BB
+ echo -e "Warning: the backup of the original BusyBox binary is missing!" \
+ "/bin/busybox will not be touched.\n" >> /tmp/busybox-power-error
+ return
fi
- if test ! -e $INSTALLDIR/busybox.original; then
- echo -e "Error: original binary is missing! Continuing will only remove the symlinks made during installation, /bin/busybox stays untouched.\n" >> /tmp/busybox-power-error
- fi
-}
-
-# N900-specific code executed prior to uninstalling the enhanced binary
-E_N900_PRERM() {
- if test -e $INSTALLDIR/busybox.power.md5; then
- INSTBINARY_MD5=`md5sum /bin/busybox | awk '{ print $1 }'`
- ORIGBINARY_MD5=`cat $INSTALLDIR/busybox.power.md5`
- if test ! "$INSTBINARY_MD5" == "$ORIGBINARY_MD5"; then
- echo -e "Warning: /bin/busybox has been modified since installing busybox-power (invalid md5 checksum). The original BusyBox binary at the time of installation will replace it if you continue.\n" >> /tmp/busybox-power-error
+ # Secondly, check the integrity of the backup
+ if test -e $INSTALLDIR/busybox.distrib.sha1; then
+ if test "`cat $INSTALLDIR/busybox.distrib.sha1`" != "$ORIGBINARY_SHA1"; then
+ if test "`cat $INSTALLDIR/busybox.distrib.version`" == "`GETBBVERSION`"; then
+ # The backup has been changed whilst busybox hasn't been upgraded
+ echo -e "Warning: the backup of the original BusyBox binary has" \
+ "been modified since installing busybox-power (invalid SHA1" \
+ "checksum). Do not continue unless you're sure that $DISTBIN" \
+ "is not corrupted.\n" >> /tmp/busybox-power-error
+ fi
fi
+ else
+ echo -e "Warning: could not load the saved SHA1 checksum of the backup" \
+ "of the original BusyBox binary; the integrity of the backup of the" \
+ "original binary can not be guaranteed.\n" >> /tmp/busybox-power-error
fi
+}
- if test -e $INSTALLDIR/busybox.original.md5; then
- INSTBINARY_MD5=`cat $INSTALLDIR/busybox.original.md5`
- ORIGBINARY_MD5=`md5sum $INSTALLDIR/busybox.original | awk '{ print $1 }'`
- if test ! "$INSTBINARY_MD5" == "$ORIGBINARY_MD5"; then
- echo -e "Warning: the backed-up original binary has been modified since installing busybox-power (invalid md5 checksum). Do not continue unless you're sure $INSTALLDIR/busybox.original isn't corrupted.\n" >> /tmp/busybox-power-error
- fi
- else
- echo -e "Warning: couldn't load the saved md5 checksum of the original binary; the integrity of the backup of the original binary can not be guaranteed.\n" >> /tmp/busybox-power-error
+# Check whether /bin/busybox has been modified after bb-power's installation
+CHECK_INSTALLEDBIN() {
+ if test "$INSTBINARY_SHA1" != "`sha1sum /bin/busybox | awk '{ print $1 }'`"; then
+ echo -e "Warning: /bin/busybox has been modified since installing" \
+ "busybox-power (invalid SHA1 checksum). Your current /bin/busybox" \
+ "won't be touched and the diversion of /bin/busybox to $DISTBIN will" \
+ "not be removed. \n" >> /tmp/busybox-power-error
+ MODIFIEDBIN="1"
fi
}
echo " Hit [ctrl-c] to break"
read
;;
- N900)
- echo "Click \"I Agree\" to ignore the above errors/warnings. Ask for help if you don't know what to do." >> /tmp/busybox-power-error
+ FREMANTLE)
+ echo "Click \"I Agree\" to ignore the above errors/warnings. Ask for" \
+ "help if you don't know what to do." >> /tmp/busybox-power-error
echo "Please confirm the text on the screen of your device"
maemo-confirm-text "Attention!" /tmp/busybox-power-error
res=$?
# Uninstallation of the enhanced binary
UNINSTALL() {
- if test -e $INSTALLDIR/busybox.original; then
- cp -f $INSTALLDIR/busybox.original /bin/busybox
+ if test $MODIFIEDBIN == 1; then
+ # /bin/busybox has been modified since installing busybox-power
+ # Leave both the file and the diversion in place
+ return
+ elif test -e $DISTBIN; then
+ cp -af $DISTBIN /bin/busybox
if test -e /bin/busybox; then
- rm $INSTALLDIR/busybox.original; fi
- else
- if test "$ENVIRONMENT" == "SDK"; then
- # There was no /bin/busybox to begin with..
- rm /bin/busybox
- fi
+ rm $DISTBIN; fi
+ elif test "$ENVIRONMENT" == "SDK"; then
+ # There was no /bin/busybox to begin with..
+ rm /bin/busybox
fi
+
+ /usr/sbin/dpkg-divert --remove /bin/busybox
}
# Remove all symlinks that the installation script has made
ECHO_VERBOSE "\nRemoving symlinks in $DIR"
# Walk through all applications from the current destination
for APP in $APPLICATIONS; do
- # The following code is executed for every application in the current destination
+ # The following code is executed for every application in the current
+ # destination
if test -h $DIR/$APP; then
# Good, this app is still a symbolic link ..
if test -n "`ls -l $DIR/$APP | grep busybox`"; then
# Action to be performed after restoring original busybox
CLEANUP() {
OLDFILES="busybox-power.symlinks
- busybox.power.md5
- busybox.original.md5"
+ busybox.distrib.version
+ busybox.distrib.sha1"
for file in $OLDFILES; do
if test -e $INSTALLDIR/$file; then
ECHO_VERBOSE " binary: $EXECPWR"
ECHO_VERBOSE " version string: `$EXECPWR | $EXECPWR head -n 1`"
CHECK_ENV && ECHO_VERBOSE " environment: $ENVIRONMENT"
-GENERIC_CHECKS
-case $ENVIRONMENT in
- N900)
- E_N900_CHECKS
- E_N900_PRERM
- ;;
-esac
+
+CHECK_STANDALONE
+CHECK_SYMLINKSFILE
+if test "$ENVIRONMENT" != "SDK"; then
+ CHECK_ROOT
+ CHECK_BACKUP
+ CHECK_INSTALLEDBIN
+fi
if test -e /tmp/busybox-power-error; then
# An error has occured during the checks
DISPLAY_ERRORS
projects / busybox-power / blobdiff