Network config arrays are now split by embedded new lines instead of being evaled into space separated values. This makes it easier to read, maintain and document as discussed on gentoo-dev.

1 files changed, 30 insertions, 18 deletions

diff --git a/sh/net.sh b/sh/net.sh
index de3164c..427c1fa 100755
--- a/sh/net.sh
+++ b/sh/net.sh
@@ -40,20 +40,24 @@ _shell_var() {
 	echo -n "$1" | sed -e 's/[^[:alnum:]]/_/g'
 }
 
-# Credit to David Leverton for this function which handily maps a bash array
-# structure to positional parameters so existing configs work :)
-# We'll deprecate arrays at some point though.
+# Support bash arrays - sigh
 _get_array() {
+	local _a=
 	if [ -n "${BASH}" ] ; then
 		case "$(declare -p "$1" 2>/dev/null)" in
 			"declare -a "*)
-				echo "set -- \"\${$1[@]}\""
-				return
+				eval "set -- \"\${$1[@]}\""
+				for _a in "$@"; do
+					printf "%s\n" "${_a}"
+				done
+				return 0
 				;;
 		esac
 	fi
 
-	echo "eval set -- \"\$$1\""
+	eval _a=\$$1
+	printf "%s" "${_a}"
+	[ -n "${_a}" ]
 }
 
 _wait_for_carrier() {
@@ -339,20 +343,25 @@ _load_modules() {
 }
 
 _load_config() {
-	eval "$(_get_array "config_${IFVAR}")"
+	local config="$(_get_array "config_${IFVAR}")"
+	local fallback="$(_get_array fallback_${IFVAR})"
+
 	if [ "${IFACE}" = "lo" -o "${IFACE}" = "lo0" ] ; then
-		set -- "127.0.0.1/8" "$@"
+		config="127.0.0.1/8
+${config}"
 	else
-		if [ $# -eq 0 ] ; then
+		if [ -z "${config}" ] ; then
 			ewarn "No configuration specified; defaulting to DHCP"
-			set -- "dhcp"
+			config="dhcp"
 		fi
 	fi
 
 	# We store our config in an array like vars
 	# so modules can influence it
 	config_index=0
-	for cmd in "$@" ; do
+	local IFS="
+"
+	for cmd in ${config}; do
 		eval config_${config_index}="'${cmd}'"
 		config_index=$((${config_index} + 1))
 	done
@@ -360,8 +369,7 @@ _load_config() {
 	eval config_${config_index}=
 
 	config_index=0
-	eval "$(_get_array fallback_${IFVAR})"
-	for cmd in "$@" ; do
+	for cmd in ${fallback}; do
 		eval fallback_${config_index}="'${cmd}'"
 		config_index=$((${config_index} + 1))
 	done
@@ -483,14 +491,18 @@ start() {
 		return 1
 	fi
 
-	local hidefirstroute=false first=true routes=
-	eval "$(_get_array "routes_${IFVAR}")"
+	local hidefirstroute=false first=true
+	local routes="$(_get_array "routes_${IFVAR}")"
 	if [ "${IFACE}" = "lo" -o "${IFACE}" = "lo0" ] ; then
-		set -- "127.0.0.0/8 via 127.0.0.1" "$@"
+		routes="127.0.0.0/8 via 127.0.0.1
+${routes}"
 		hidefirstroute=true
 	fi
-	for cmd in "$@" ; do
-		if ${first} ; then
+	local IFS="
+"
+	for cmd in ${routes}; do
+		unset IFS
+		if ${first}; then
 			first=false
 			einfo "Adding routes"
 		fi