Unhardcode paths

Remove distribution-specific paths (and allow overrides).

contrib/PKGBUILD

@@ -16,6 +16,7 @@ optdepends=('dialog: for the menu based wifi assistant'
             'wpa_actiond: for automatic wireless connections through netctl-auto'
             'ifenslave: for bond connections'
             'bridge-utils: for bridge connections'
+            'ppp: for pppoe connections'
            )
 conflicts=("netcfg")
 source=(ftp://ftp.archlinux.org/other/packages/netctl/netctl-${pkgver}.tar.xz{,.sig})

src/lib/connections/bond

@@ -2,7 +2,7 @@
 
 . "$SUBR_DIR/ip"
 
-IFENSLAVE="/sbin/ifenslave"
+: ${IFENSLAVE:=ifenslave}
 
 bond_up() {
     if is_interface "$Interface"; then

src/lib/connections/bridge

@@ -2,7 +2,7 @@
 
 . "$SUBR_DIR/ip"
 
-BRCTL="/usr/sbin/brctl"
+: ${BRCTL:=brctl}
 
 bridge_up() {
     if is_interface "$Interface"; then

src/lib/connections/pppoe

 # Contributed by: Thomas Bächler <thomas@archlinux.org>
 
+: ${PPPD:=pppd}
+
 _quotestring() {
     echo "\"${1/\"/\\\"}\""
 }
@@ -43,8 +45,8 @@ pppoe_up() {
     [[ -n ${PPPoEMAC} ]] && echo "pppoe-mac $(_quotestring "${PPPoEMAC}")" >> "${cfg}"
     [[ ${PPPoEIP6} == yes ]] && echo "+ipv6" >> "${cfg}"
 
-    /sbin/ip link set dev "${Interface}" up
-    /usr/sbin/pppd file "${cfg}"
+    ip link set dev "${Interface}" up
+    $PPPD file "${cfg}"
 
     if [[ $? -ne 0 ]]; then
         rm "${cfg}"