#!/bin/sh
-set -e
-
-sh /opt/busybox-power/uninstall-binary.sh
-
-# Clean up trap (from busybox-power <= 1.20.2power1)
-# Should be removed by the old prerm, but may be left behind when that one fails
-# and dpkg uses this one instead. Therefore, keep this cleanup included for a
-# few busybox-power releases.
-line="trap exit SIGHUP #by busybox-power"
-if grep -F -q "$line" /etc/profile; then
- sed "/$line/d" /etc/profile > /tmp/profile.sed
- mv /tmp/profile.sed /etc/profile
+# A script to restore /bin/busybox and delete the symlinks made during
+# installation.
+#
+# Symbolic links to applets are only removed if they are
+# 1) created by the installer script ("install-binary.sh")
+# 2) not replaced by a binary (i.e. they are still a symbolic link)
+# 3) pointing to a busybox binary
+#
+# By Dennis Groenen <tj.groenen@gmail.com>
+# GPLv3 licensed
+#
+
+INSTALLDIR="/opt/busybox-power"
+EXECPWR="$INSTALLDIR/busybox.power"
+DISTBIN="$INSTALLDIR/busybox.distrib"
+
+VERBOSE="0"
+MODIFIEDBIN="0"
+
+INSTBINARY_SHA1=`sha1sum $EXECPWR | awk '{ print $1 }'`
+if test -e $DISTBIN; then
+ ORIGBINARY_SHA1=`sha1sum $DISTBIN | awk '{ print $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 "Warning: cannot find the list of symlinks to be removed. No" \
+ "symlinks will be removed at all!\n" >> /tmp/busybox-power-error
+ fi
+}
+
+# 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
+
+ # 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 -e $INSTALLDIR/busybox.distrib.version; 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. Do not continue" \
+ "unless you're sure that $DISTBIN is not corrupted.\n" \
+ >> /tmp/busybox-power-error
+ fi
+ else
+ echo -e "Warning: the backup of the original BusyBox binary has" \
+ "been modified since installing busybox-power. We could not" \
+ "determine whether this is due to a BusyBox upgrade (e.g. by an" \
+ "(C)SSU update) or not. Do not continue unless either the latter is" \
+ "the case, or you're via other ways sure that $DISTBIN is not" \
+ "corrupted.\n" >> /tmp/busybox-power-error
+ fi
+ fi
+ else
+ echo -e "Warning: could not load the saved SHA1 checksum of the backup" \
+ "of the original BusyBox binary; the integrity of the backup of the" \
+ "original binary can not be guaranteed.\n" >> /tmp/busybox-power-error
+ fi
+}
+
+# Check whether /bin/busybox has been modified after bb-power's installation
+# This always happens on Harmattan when it receives a BusyBox upgrade;
+# dpkg-divert is disallowed on that platform
+CHECK_INSTALLEDBIN() {
+ if test "$INSTBINARY_SHA1" != "`sha1sum /bin/busybox | awk '{ print $1 }'`"; then
+ MODIFIEDBIN="1"
+
+ if test "$ENVIRONMENT" == "HARMATTAN"; then
+ if test -e $INSTALLDIR/busybox.distrib.version; then
+ if test "`cat $INSTALLDIR/busybox.distrib.version`" != "`GETBBVERSION`"; then
+ # Harmattan received a BusyBox upgrade, do not disturb the user by
+ # warning that /bin/busybox has been modified
+ return
+ fi
+ fi
+ echo -e "Warning: /bin/busybox does not match busybox-power's binary" \
+ "This can be the result of a BusyBox upgrade (e.g. by a MeeGo" \
+ "update), an unsuccessful busybox-power installation, or a manual" \
+ "replacement of it. Your current /bin/busybox won't be touched. Our" \
+ "backup of the original BusyBox binary will be left at $DISTBIN.\n" \
+ >> /tmp/busybox-power-error
+ else
+ echo -e "Warning: /bin/busybox does not match busybox-power's binary." \
+ "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
+ fi
+ fi
+}
+
+# Display encountered errors
+DISPLAY_ERRORS() {
+ case $ENVIRONMENT in
+ SDK)
+ echo -e "\n\n-----------Attention!-----------"
+ cat /tmp/busybox-power-error
+ rm /tmp/busybox-power-error
+ echo "-> Please press [enter] to ignore the above errors/warnings."
+ echo " Hit [ctrl-c] to break"
+ read
+ ;;
+ DIABLO|FREMANTLE)
+ echo "Click \"I Agree\" to ignore the above errors/warnings. Ask for" \
+ "help if you don't know what to do." >> /tmp/busybox-power-error
+ echo "Please confirm the text on the screen of your device"
+ maemo-confirm-text "Attention!" /tmp/busybox-power-error
+ res=$?
+ rm /tmp/busybox-power-error
+ if test ! $res == 0; then exit 1; fi
+ ;;
+ HARMATTAN)
+ echo "Click \"I Agree\" to ignore the above errors/warnings. Ask for" \
+ "help if you don't know what to do." >> /tmp/busybox-power-error
+ echo "Please confirm the text on the screen of your device"
+ # We're too privileged to call meego-confirm-text...
+ # Our source is com.nokia.maemo, whilst m-c-t is from an unknown source
+ /usr/bin/aegis-exec meego-confirm-text "Attention!" \
+ /tmp/busybox-power-error > /dev/null 2>&1
+ res=$?
+ rm /tmp/busybox-power-error
+ if test ! $res == 0; then exit 1; fi
+ ;;
+ esac
+}
+
+# Rollback procedure for Harmattan based devices
+ROLLBACK_HARMATTAN() {
+ echo -e "\nWarning: an error has occured! Rolling back..."
+ $EXECPWR cp -af $TMPBINBAK /bin/busybox
+ $EXECPWR cp -a $TMPHASHBAK /var/lib/aegis/refhashlist
+ echo "End of roll-back"
+ exit 1
+}
+
+# Uninstallation of the enhanced binary
+UNINSTALL() {
+ if test $MODIFIEDBIN == 1; then
+ # /bin/busybox has been modified since installing busybox-power
+ # Leave both the file and the diversion in place
+ return
+ fi
+
+ case $ENVIRONMENT in
+ SDK|DIABLO|FREMANTLE)
+ if test -e $DISTBIN; then
+ cp -af $DISTBIN /bin/busybox
+ if test -e /bin/busybox; then
+ 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
+ ;;
+ HARMATTAN)
+ if ! test -e $DISTBIN; then return; fi
+
+ TMPHASHBAK=`$EXECPWR mktemp`
+ TMPBINBAK=`$EXECPWR mktemp`
+ ORIGINCHECK=`GETORIGINCHECK_STATUS`
+
+ # Useful information for Harmattan-based devices
+ ECHO_VERBOSE "refhashlist backup: $TMPHASHBAK"
+ ECHO_VERBOSE "busybox backup: $TMPBINBAK"
+ ECHO_VERBOSE "instbinary: $INSTBINARY_SHA1"
+ ECHO_VERBOSE "origbinary: $ORIGBINARY_SHA1"
+ ECHO_VERBOSE "device mode: $DEVICEMODE"
+ ECHO_VERBOSE "origincheck: $ORIGINCHECK"
+
+ if test $ORIGINCHECK -eq 1; then
+ SETORIGINCHECK_STATUS 0; fi
+
+ $EXECPWR cp -a /bin/busybox $TMPBINBAK || exit 1
+ $EXECPWR cp -a /var/lib/aegis/refhashlist $TMPHASHBAK || exit 1
+ $EXECPWR cp -af $DISTBIN /bin/busybox || ROLLBACK_HARMATTAN
+ $EXECPWR sed -i "s/$INSTBINARY_SHA1/$ORIGBINARY_SHA1/" /var/lib/aegis/refhashlist || ROLLBACK_HARMATTAN
+ /usr/bin/accli -c tcb-sign -F /var/lib/aegis/refhashlist < /var/lib/aegis/refhashlist || ROLLBACK_HARMATTAN
+ /usr/sbin/validator-init
+
+ if test $ORIGINCHECK -eq 1; then
+ SETORIGINCHECK_STATUS 1; fi
+
+ rm $TMPBINBAK
+ rm $TMPHASHBAK
+ rm $DISTBIN
+ ;;
+ esac
+}
+
+# Remove all symlinks that the installation script has made
+UNSYMLINK() {
+ # Load list of installed symlinks
+ touch $INSTALLDIR/busybox-power.symlinks
+ source $INSTALLDIR/busybox-power.symlinks
+
+ # Walk through all possible destinations
+ for DESTDIR in $DESTINATIONS; do
+ # Enable us to see all entries in $DESTINATIONS as variables
+ eval "APPLICATIONS=\$$DESTDIR"
+ # Set destination directory accordingly
+ case $DESTDIR in
+ DEST_BIN)
+ DIR="/bin"
+ ;;
+ DEST_SBIN)
+ DIR="/sbin"
+ ;;
+ DEST_USRBIN)
+ DIR="/usr/bin"
+ ;;
+ DEST_USRSBIN)
+ DIR="/usr/sbin"
+ ;;
+ esac
+
+ 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
+ if test -h $DIR/$APP; then
+ # Good, this app is still a symbolic link ..
+ if test -n "`ls -l $DIR/$APP | grep busybox`"; then
+ ECHO_VERBOSE "Removing link: $DIR/$APP"
+ rm $DIR/$APP
+ fi
+ fi
+ done
+ done
+}
+
+# Action to be performed after restoring original busybox
+CLEANUP() {
+ OLDFILES="busybox-power.symlinks
+ busybox.distrib.version
+ busybox.distrib.sha1"
+
+ for file in $OLDFILES; do
+ if test -e $INSTALLDIR/$file; then
+ rm $INSTALLDIR/$file
+ fi
+ done
+
+ # Clean up trap (from busybox-power <= 1.20.2power1)
+ # Should be removed by the old prerm, but may be left behind when that one
+ # fails and dpkg uses this one instead. Therefore, keep this cleanup
+ # included for a few busybox-power releases.
+ line="trap exit SIGHUP #by busybox-power"
+ if grep -F -q "$line" /etc/profile; then
+ sed "/$line/d" /etc/profile > /tmp/profile.sed
+ mv /tmp/profile.sed /etc/profile
+ fi
+}
+
+### Codepath ###
+ECHO_VERBOSE "busybox-power: verbose mode"
+ECHO_VERBOSE " binary: $EXECPWR"
+ECHO_VERBOSE " version string: `$EXECPWR | $EXECPWR head -n 1`"
+CHECK_ENV && ECHO_VERBOSE " environment: $ENVIRONMENT"
+
+CHECK_SYMLINKSFILE
+if test "$ENVIRONMENT" != "SDK"; then
+ CHECK_ROOT
+fi
+CHECK_BACKUP
+CHECK_INSTALLEDBIN
+if test -e /tmp/busybox-power-error; then
+ # An error has occured during the checks
+ DISPLAY_ERRORS
fi
+UNSYMLINK
+UNINSTALL
+CLEANUP
projects / busybox-power / blobdiff