Create zips to install and remove F-Droid as system app

Adds a script zip-build.sh which creates CWM-flashable zips to install/update and remove F-Droid as system/privileged app.

tools/zip-build.sh

@@ -0,0 +1,37 @@
+#!/bin/bash -ex
+
+# Copyright 2014 Ron Rieve
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+function create-update-zip {
+    APK_NAME=$1
+    rm -rf "bin/zip/${APK_NAME}"*
+    mkdir -p bin/zip/${APK_NAME}
+    cp bin/${APK_NAME}.apk bin/zip/${APK_NAME}/FDroid.apk
+    mkdir -p bin/zip/${APK_NAME}/META-INF/com/google/android
+    cp tools/zip-installer bin/zip/${APK_NAME}/META-INF/com/google/android/update-binary
+    (cd bin/zip/${APK_NAME}; zip -r -X ../${APK_NAME}.zip FDroid.apk META-INF/com/google/android/update-binary)
+}
+
+for apk in bin/*.apk
+do
+    apk=${apk##*/}
+    apk=${apk%%\.apk}
+    create-update-zip $apk
+done
+
+rm -rf bin/zip/F-Droid-remove*
+mkdir -p bin/zip/F-Droid-remove/META-INF/com/google/android
+cp tools/zip-uninstaller bin/zip/F-Droid-remove/META-INF/com/google/android/update-binary
+(cd bin/zip/F-Droid-remove; zip -r -X ../F-Droid-remove.zip FDroid.apk META-INF/com/google/android/update-binary)

tools/zip-installer

@@ -0,0 +1,56 @@
+#!/sbin/sh
+
+# Copyright 2013 Koushik Dutta, 2014 Ron Rieve
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# arg 1 is recovery api version, generally 3.
+# arg 2 is the pipe fd, to the recovery binary.
+# communicate with it using the recovery api.
+# arg 3 is the zip file
+
+echo -n -e 'ui_print Installing F-Droid...\n' > /proc/self/fd/$2
+echo -n -e 'ui_print\n' > /proc/self/fd/$2
+
+cd /tmp
+mkdir fdroid
+cd fdroid
+unzip -o "$3"
+if [ "$?" -ne "0" ]
+then
+  cp /cache/FDroid.apk .
+fi
+
+mount /system
+rm -f /system/app/FDroid.*
+rm -f /system/priv-app/FDroid.*
+
+
+# if the system is < 4.4, a system app has to be in /system/app
+# if the system is >= 4.4, a privileged (new name for system) app has to be in /system/priv-app
+BUILD_RELEASE_VERSION="$(grep 'ro\.build\.version\.release' /system/build.prop)"
+VERSION="${BUILD_RELEASE_VERSION##*=}"
+MAJ=${VERSION%%.*}
+MIN=${VERSION#*.}
+MIN=${MIN//.*}
+
+if [ "${MAJ}${MIN}" -ge 44 ]
+then
+  INSTDIR="/system/priv-app"
+else
+  INSTDIR="/system/app"
+fi
+cp FDroid.apk ${INSTDIR}
+chmod 644 ${INSTDIR}/FDroid.apk
+
+umount /system

tools/zip-uninstaller

@@ -0,0 +1,38 @@
+#!/sbin/sh
+
+# Copyright 2013 Koushik Dutta, 2014 Ron Rieve
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# arg 1 is recovery api version, generally 3.
+# arg 2 is the pipe fd, to the recovery binary.
+# communicate with it using the recovery api.
+# arg 3 is the zip file
+
+echo -n -e 'ui_print Removing system instances of F-Droid...\n' > /proc/self/fd/$2
+echo -n -e 'ui_print\n' > /proc/self/fd/$2
+
+cd /tmp
+mkdir fdroid
+cd fdroid
+unzip -o "$3"
+if [ "$?" -ne "0" ]
+then
+  cp /cache/FDroid.apk .
+fi
+
+mount /system
+rm -f /system/app/FDroid.*
+rm -f /system/priv-app/FDroid.*
+
+umount /system