Fix Linux SLURL protocol handling

Known issue: May not work with Microsoft Edge Beta for Linux on some setups. Cause is unknown at the moment and requires further investigation.

indra/newview/linux_tools/register_secondlifeprotocol.sh

@@ -4,45 +4,74 @@
 # URLs of the form secondlife://...
 #
 
-HANDLER="$1"
+desired_handler="${1}"
 
-RUN_PATH=`dirname "$0" || echo .`
-cd "${RUN_PATH}/.."
+print() {
+	log_prefix="RegisterSLProtocol:"
+	echo -e "${log_prefix} $*"
+}
+run_path=$(dirname "$0" || echo .)
+cd "${run_path}/.." || exit
 
-if [ -z "$HANDLER" ]; then
-    HANDLER=`pwd`/etc/handle_secondlifeprotocol.sh
+if [ -z "${desired_handler}" ]; then
+	desired_handler="$(pwd)/etc/handle_secondlifeprotocol.sh"
 fi
 
-# Register handler for GNOME-aware apps
-LLGCONFTOOL=gconftool
-if which ${LLGCONFTOOL} >/dev/null; then
-    (${LLGCONFTOOL} -s -t string /desktop/gnome/url-handlers/secondlife/command "${HANDLER} \"%s\"" && ${LLGCONFTOOL} -s -t bool /desktop/gnome/url-handlers/secondlife/enabled true) || echo Warning: Did not register secondlife:// handler with GNOME: ${LLGCONFTOOL} failed.
-else
-    echo Warning: Did not register secondlife:// handler with GNOME: ${LLGCONFTOOL} not found.
-fi
+# Ensure the handle_secondlifeprotocol.sh file is executeable (otherwise, xdg-mime won't work)
+chmod +x "$desired_handler"
 
-# Register handler for KDE-aware apps
-for LLKDECONFIG in kde-config kde4-config; do
-    if [ `which $LLKDECONFIG` ]; then
-        LLKDEPROTODIR=`$LLKDECONFIG --path services | cut -d ':' -f 1`
-        if [ -d "$LLKDEPROTODIR" ]; then
-            LLKDEPROTOFILE=${LLKDEPROTODIR}/secondlife.protocol
-            cat > ${LLKDEPROTOFILE} <<EOF || echo Warning: Did not register secondlife:// handler with KDE: Could not write ${LLKDEPROTOFILE} 
-[Protocol]
-exec=${HANDLER} '%u'
-protocol=secondlife
-input=none
-output=none
-helper=true
-listing=
-reading=false
-writing=false
-makedir=false
-deleting=false
-EOF
-        else
-            echo Warning: Did not register secondlife:// handler with KDE: Directory $LLKDEPROTODIR does not exist.
-        fi
-    fi
-done
+# Check if xdg-mime is present, if so, use it to register new protocol.
+if command -v xdg-mime query default x-scheme-handler/secondlife >/dev/null 2>&1; then
+	urlhandler=$(xdg-mime query default x-scheme-handler/secondlife)
+	localappdir="${HOME}/.local/share/applications"
+	newhandler="secondlifeprotocol_$(basename "$(dirname "${desired_handler}")").desktop"
+	handlerpath="${localappdir}/${newhandler}"
+	cat >"${handlerpath}" <<EOFnew || print "Warning: Did not register secondlife:// handler with xdg-mime: Could not write $newhandler"s
+[Desktop Entry]
+Version=1.4
+Name="Second Life URL handler"
+Comment="secondlife:// URL handler"
+Type=Application
+Exec=$desired_handler %u
+Terminal=false
+StartupNotify=true
+NoDisplay=true
+MimeType=x-scheme-handler/secondlife
+EOFnew
 
+	# TODO: use absolute path for the desktop file
+	# TODO: Ensure that multiple channels behave properly due to different desktop file names in /usr/share/applications/
+	# TODO: Better detection of what the handler actually is, as other viewer projects may use the same filename
+	if [ -z "${urlhandler}" ]; then
+		print No SLURL handler currently registered, creating new...
+	else
+		#xdg-mime uninstall $localappdir/$urlhandler
+		#Clean up handlers from other viewers
+		if [ "${urlhandler}" != "${newhandler}" ]; then
+			print "Current SLURL Handler: ${urlhandler} - Setting ${newhandler} as the new default..."
+			mv "${localappdir}"/"${urlhandler}" "${localappdir}"/"${urlhandler}".bak
+		else
+			print "SLURL Handler has not changed, leaving as-is."
+		fi
+	fi
+	xdg-mime default "${newhandler}" x-scheme-handler/secondlife
+	if command -v update-desktop-database >/dev/null 2>&1; then
+		update-desktop-database "${localappdir}"
+		print "Registered ${desired_handler} as secondlife:// protocol handler with xdg-mime."
+	else
+		print "Warning: Cannot update desktop database, command missing - installation may be incomplete."
+	fi
+else
+	print "Warning: Did not register secondlife:// handler with xdg-mime: Package not found."
+	# TODO: use dconf or another modern alternative
+	gconftool=$(command -v "${LLGCONFTOOL:=gconftool-2}")
+	if [[ -n "${gconftool}" ]]; then
+		print "=== USING DEPRECATED GCONF API ==="
+		if "${gconftool}" -s -t string /desktop/gnome/url-handlers/secondlife/command "${desired_handler} \"%s\"" &&
+			${gconftool} -s -t bool /desktop/gnome/url-handlers/secondlife/enabled true; then
+			print "Registered ${desired_handler} as secondlife:// handler with (deprecated) gconf."
+		else
+			print "Failed to register secondlife:// handler with (deprecated) gconf."
+		fi
+	fi
+fi