Bash script to replace CodeSignature on an Ad-Hoc / Apple IPA bundle

resign.sh

#!/bin/bash
EXPECTED_ARGS=3
E_BADARGS=-1
CERTIFICATE_NAME="iPhone Distribution: MY_CERTIFICATE_NAME" 

#verify correct usage
if [ $# -ne $EXPECTED_ARGS ]
then
  echo "Usage: `basename $0` file_to_resign provisioning_profile package_name" 
  exit $E_BADARGS
fi

FILENAME=$(basename $1)
PROVISIONING_PROFILE=$(basename $2)
APPNAME=$(basename "$3")

echo "Resigning $FILENAME with $PROVISIONING_PROFILE provisioning profile..." 

#clear temporary dir if exists
rm -rf Payload;
#make temporary dir
mkdir $TEMPDIR;

echo "-> Extracting ipa to $TEMPDIR" 
unzip $FILENAME > /dev/null

echo "-> Removing the old CodeSignature in Payload/$APPNAME/_CodeSignature and Payload/$APPNAME/CodeResources" 
rm -r "Payload/$APPNAME/_CodeSignature" "Payload/$APPNAME/CodeResources" 2> /dev/null | true

echo "-> Replacing the provisioning profile in Payload/$APPNAME/embedded.mobileprovision with $PROVISIONING_PROFILE" 
cp $PROVISIONING_PROFILE "Payload/$APPNAME/embedded.mobileprovision" 

echo "-> Re-Signing application" 
/usr/bin/codesign -f -s "$CERTIFICATE_NAME" --resource-rules "Payload/$APPNAME/ResourceRules.plist" --entitlements "Payload/$APPNAME/Entitlements.plist" "Payload/$APPNAME" 

echo "-> Packaging the new application" 
zip -qr "$APPNAME".resigned.ipa "Payload" 

#lear temporary dir
#rm -rf $TEMPDIR;
echo "Created $APPNAME.resigned.ipa"