X-Git-Url: https://vcs.maemo.org/git/?a=blobdiff_plain;f=debian%2Fbusybox-power.postinst;h=0dd43bcf6b7242317b55e01c29583f55c604e6ff;hb=88992e2fc7ed03fec61cccd4c20ecd5ca15766b4;hp=6f603a38d2948c1064106e7ee29c90ed580dab24;hpb=767be848f1b4e13be3181cf4ad5e5f676a2e41f5;p=busybox-power

diff --git a/debian/busybox-power.postinst b/debian/busybox-power.postinst
index 6f603a3..0dd43bc 100644
--- a/debian/busybox-power.postinst
+++ b/debian/busybox-power.postinst
@@ -1,15 +1,191 @@
-#!/bin/sh
-set -e
+#!/opt/busybox-power/busybox.power sh
+# A script to replace /bin/busybox and create missing symlinks to its applets.
+#
+# The target directories for BusyBox' applets are defined in the "applets" file.
+# This script will only create symbolic links when 1) they do not already exist
+# in the filesystem, and 2) the BusyBox binary supports the applet. A list of
+# all made symbolic links is written out to the file "busybox-power.symlinks",
+# which will be used during uninstallation of busybox-power.
+#
+# NB The BusyBox binary needs to support the install applet.
+#
+# By Dennis Groenen <tj.groenen@gmail.com>
+# GPLv3 licensed
+#
 
-/opt/busybox-power/busybox.power sh /opt/busybox-power/install-binary.sh
+INSTALLDIR="/opt/busybox-power"
+EXECPWR="$INSTALLDIR/busybox.power"
+DISTBIN="/bin/busybox.distrib"
 
-# Workaround for bug 5317
-line="trap exit SIGHUP #by busybox-power"
-if ! grep -F -q "$line" /etc/profile; then
-  echo "$line" >> /etc/profile
-fi
+VERBOSE="0"
+SYMLINK="1"
+
+INSTBINARY_SHA1=`$EXECPWR sha1sum $EXECPWR | $EXECPWR awk '{ print $1 }'`
+ORIGBINARY_SHA1=`$EXECPWR sha1sum /bin/busybox | $EXECPWR awk '{ print $1 }'`
+
+# Load shared functions
+source $INSTALLDIR/functions
+
+# Check whether the applets file exists
+CHECK_APPLETSFILE() {
+    if test ! -e $INSTALLDIR/applets; then
+      echo "error: cannot find list of defined applets"
+      exit 1
+    fi
+}
+
+# Check whether symlinks have been made before
+CHECK_SYMLINKSFILE() {
+    if test -e $INSTALLDIR/busybox-power.symlinks; then
+      ECHO_VERBOSE "symlinks are already made, skipping creation"
+      SYMLINK="0"
+    fi
+}
+
+# Backup the original BusyBox binary
+BACKUP() {
+    if test ! -e /bin/busybox; then
+      # Scratchbox does not ship with BusyBox by default
+      return
+    fi
+
+    if test "$INSTBINARY_SHA1" != "$ORIGBINARY_SHA1"; then
+      $EXECPWR cp -a /bin/busybox $DISTBIN
+      $EXECPWR sha1sum $DISTBIN | $EXECPWR awk '{ print $1 }' \
+        > $INSTALLDIR/busybox.distrib.sha1
+      GETBBVERSION > $INSTALLDIR/busybox.distrib.version
+    fi
+}
+
+# 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
+}
+
+# Overwrite the installed binary with the enhanced binary
+# dpkg-divert is disallowed on Harmattan, do not use it there!
+INSTALL() {
+    case $ENVIRONMENT in
+      SDK|DIABLO|FREMANTLE)
+        # Divert in postinst instead of preinst, we don't want to leave Maemo
+        # without /bin/busybox for a short period of time
+        /usr/sbin/dpkg-divert --package busybox-power --add \
+          --divert $DISTBIN /bin/busybox
+        $EXECPWR cp -f $EXECPWR /bin/busybox
+        ;;
+      HARMATTAN)
+        TMPHASHBAK=`$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 $EXECPWR /bin/busybox || ROLLBACK_HARMATTAN
+        $EXECPWR sed -i "s/$ORIGBINARY_SHA1/$INSTBINARY_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
+
+        $EXECPWR rm $TMPBINBAK
+        $EXECPWR rm $TMPHASHBAK
+        ;;
+    esac
+}
 
-# Set SUID bit on /bin/busybox. Privileges are automatically dropped for 
-# applets that do not require the SUID bit to be set
-chmod u+s /bin/busybox
+# Create missing symlinks to the enhanced binary
+SYMLINK() {
+    # Load defined BusyBox applets
+    source $INSTALLDIR/applets
+
+    # Get a list of supported applets by busybox-power
+    if test -d /tmp/busybox-power; then
+      $EXECPWR rm -Rf /tmp/busybox-power; fi
+    $EXECPWR mkdir -p /tmp/busybox-power
+    $EXECPWR --install -s /tmp/busybox-power
+    $EXECPWR ls /tmp/busybox-power/ > $INSTALLDIR/applets_supported
+    $EXECPWR rm -Rf /tmp/busybox-power
+
+    # Prepare file that will keep track of installed symlinks by busybox-power
+    echo "# Automatically generated by busybox-power. DO NOT EDIT" > $INSTALLDIR/busybox-power.symlinks
+    echo -e "\nDESTINATIONS=\"$DESTINATIONS\"" >> $INSTALLDIR/busybox-power.symlinks
+    echo -e "\n# Installed symlinks" >> $INSTALLDIR/busybox-power.symlinks
+
+    # Walk through all possible destinations
+    for DESTDIR in $DESTINATIONS; do
+      # Enable us to see all entries in $DESTINATION as variables
+      eval "APPLICATIONS=\$$DESTDIR"
+
+      # Set destination directory accordingly
+      case $DESTDIR in
+        DEST_BIN)
+          DIR="/bin"
+          ;;
+        DEST_SBIN)
+          DIR="/sbin"
+          ;;
+        DEST_USRBIN)
+          DIR="/usr/bin"
+          ;;
+        DEST_USRSBIN)
+          DIR="/usr/sbin"
+          ;;
+      esac
+
+      # Keep track of installed symlinks per destination
+      SYMLINKS="$DESTDIR=\""
+
+      ECHO_VERBOSE "\nSymlinking applets in $DIR"
+      # Walk through all applications from the current destination
+      for APP in $APPLICATIONS; do
+        # The following code is executed for all applets in the current destination
+        if test ! -e $DIR/$APP; then
+          # Check whether the applet is supported by the busybox binary
+          if `$EXECPWR grep -Fq "$APP" $INSTALLDIR/applets_supported`; then
+            ECHO_VERBOSE "Symlinking: /bin/busybox -> $DIR/$APP"
+            $EXECPWR ln -s /bin/busybox $DIR/$APP
+            SYMLINKS="$SYMLINKS $APP" 
+          fi
+        fi
+      done
+
+      # Write out installed symlinks
+      echo "$SYMLINKS\"" >> $INSTALLDIR/busybox-power.symlinks
+    done
+
+    $EXECPWR rm $INSTALLDIR/applets_supported
+}
+
+### 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: $ENVIRONMENT"
+
+CHECK_APPLETSFILE
+CHECK_SYMLINKSFILE
+if test "$ENVIRONMENT" != "SDK"; then
+  CHECK_ROOT
+fi
+BACKUP
+INSTALL
+if test $SYMLINK == 1; then
+  SYMLINK
+fi