#!/bin/bash

# Enables or disables update functionality for non-logged-in access.
# This allows updating the installation w/o being logged in as the site admin.
# If this is a Drupal-5 (or earlier) site, this is done by updating
# the $access_check variable in a site installation's update.php file.
# If this is a Drupal-6 (or later) site, this is done by updating
# the $update_free_access variable in the site's settings.php file.
# This functionality should remain disabled (must be logged in as admin to update)
# during normal operation.
# This cooresponds to running this script wth a 'true' parameter.
# Note that the script will set the permissions to the file back to their original settings.

# include library file
. "`dirname ${0}`/drupalLibrary.sh"


printUsage() {
	echo -e " "
	echo -e "Enables/disables the access check that allows updating a site w/o being logged in as the admin."
	echo -e "For more info, see script header."
	echo -e " "
	echo -e "Usage:"
	echo -e "$0 ( true | false ) ( <INSTALL> | all ) [install group root dir]"
	echo -e "where:"
	echo -e " "
	echo -e "true | false"
	echo -e "\tSpecifies the state of the access check."
	echo -e "\t'true' enables the access check, 'false' disables it."
	echo -e "\t* Should be 'true' for production use."
	echo -e " "
	outputInstallGroupUsage foo
	echo -e " "
}


#########

# Param handling
if [ $# -eq 0 ]; then
	printUsage
	exit 0
fi
echo " "

# Handle true/false
case "${1}" in
true )
	pAccessCheck="TRUE"
	;;
false )
	pAccessCheck="FALSE"
	;;
* )
	echo -e "** Invalid true/false parameter.  Aborting.\n"
	printUsage
	exit 1
esac
shift

# process Group Root Dir
pRootDir="`getGroupRootDir "${2}"`"
errorStr="`validateGroupRootDir "${pRootDir}"`"
if [ -n "${errorStr}" ]; then
	echo -e "${errorStr}\n"
	printUsage
	exit 1
fi

pInstall="$1"
if [ "`toLower "${pInstall}"`" == "all" ]; then
	pInstall="`getSitesInGroupDir "${pRootDir}"`"

	# Ensure not specifying all installs if specifying output dir
	if [ -n "${pOutputDir}" ]; then
		echo -e "** Cannot specify output dir for all installs.  Aborting."
		printUsage
		exit 1
	fi

else
	# Validate the installation
	errorStr="`validateSite "${pInstall}" "${pRootDir}"`"
	if [ -n "${errorStr}" ]; then
		echo -e "** Error with specified install: ${errorStr}.  Aborting.\n"
		exit 1
	fi
fi

# process
for site in ${pInstall}; do
	echo -en "Processing site '${site}'.... "

	# If this is a Drupal-5 site (or older), the $access_check variable in the
	# .../update.php file controls the access check functionality.
	cd "`getTargetDir "${site}" "${pRootDir}"`"
	if [ -n "`cat update.php | grep '^\$access'`" ]; then
		# Get orignal file perms
		perms="`getChmodParamFromFile update.php`"

		( tempFile="`mktemp`" && cat update.php | awk '/^\$access_check = [A-Z]*;$/ { print "$access_check = '${pAccessCheck}';"; next }; {print $0}' > "${tempFile}" && /bin/mv -f "${tempFile}" update.php && chmod ${perms} update.php ) || {
			echo -e "\n\t** Unable to update update.php file.  Skipping site '${site}'"
			continue
		}
	else
		# Must be a Drupal-6 (or later) site.
		# Access check is controlled by the $update_free_access variable in the
		# settings.php in the sites directory.
		# Also... the value of this variable is exactly opposite of the value of the $access_check variable for Drupal-5 sites.
		# I.e. if $pAccessCheck is "TRUE", we have to set "FALSE" into the settings.php file and vice-versa.
		if [[ "${pAccessCheck}" == "TRUE" ]]; then
			holdCheck="FALSE"
		else
			holdCheck="TRUE"
		fi

		cd "`getSiteDir "${site}" "${pRootDir}"`"

		# Get orignal file perms
		perms="`getChmodParamFromFile settings.php`"

		( tempFile="`mktemp`" && cat settings.php | awk '/^\$update_free_access = [A-Z]*;$/ { print "$update_free_access = '${holdCheck}';"; next }; {print $0}' > "${tempFile}" && /bin/mv -f "${tempFile}" settings.php && chmod ${perms} settings.php ) || {
			echo -e "\n\t** Unable to update settings.php file.  Skipping site '${site}'"
			continue
		}
	fi

	echo -e "Done."
done

# Done
echo -e "\n** Done."