olsr: allow lazy-plugin-naming: e.g. olsrd_txtinfo (not olsrd_txtinfo.so.1.2)

overload init-skript's olsrd_write_loadplugin() with new function
find_most_recent_plugin_libary() - so now we can mix 'exact' and lazy
names. This change is backward compatible and now we have a better
migration strategy. This topic was hot again, after the latest updates
of a lot of plugins, resulting in non-working configs...

diff --git a/olsrd/files/olsrd.init b/olsrd/files/olsrd.init
index 258c7a580116b8ee83af99169a98a62459951f7e..9018b2e380da166b2524cb5150d9769e7b5847ed 100644 (file)
--- a/olsrd/files/olsrd.init
+++ b/olsrd/files/olsrd.init
@@ -475,32 +475,48 @@ olsrd_write_hna6() {
        return 0
 }
 
-olsrd_write_loadplugin() {
-       local funcname="olsrd_write_loadplugin"
+find_most_recent_plugin_libary()
+{
+       local library="$1"
+       local file unixtime
+
+       for file in "/lib/$library"* "/usr/lib/$library"* "/usr/local/lib/$library"*; do {
+               [ -f "$file" ] && {
+                       unixtime="$( date +%s -r "$file" )"
+                       echo "$unixtime $file"
+               }
+       } done | sort -n | tail -n1 | cut -d' ' -f2
+}
+
+olsrd_write_loadplugin()
+{
+       local funcname='olsrd_write_loadplugin'
        local cfg="$1"
+       local ignore name suffix lat lon latlon_infile
+
        validate_varname "$cfg" || return 0
-       local ignore
-       local name
-       local suffix
-       local lat
-       local lon
-       local latlon_infile
 
        config_get_bool ignore "$cfg" ignore 0
        [ "$ignore" -ne 0 ] && return 0
 
+       # e.g. olsrd_txtinfo.so.1.1 or 'olsrd_txtinfo'
        config_get library "$cfg" library
-       if ! validate_olsrd_option "$library"; then
-               warning_invalid_value olsrd "$cfg" "library"
-               return 0
-       fi
-       if ! [ -x "/lib/$library" -o -x "/usr/lib/$library" -o -x "/usr/local/lib/$library" ]; then
+
+       library="$( find_most_recent_plugin_libary "$library" )"
+       if [ -z "$library" ]; then
                log "$funcname() Warning: Plugin library '$library' not found, skipped"
                return 0
+       else
+               library="$( basename "$library" )"
        fi
 
+       validate_olsrd_option "$library" || {
+               warning_invalid_value olsrd "$cfg" 'library'
+               return 0
+       }
+
        case "$library" in
-               olsrd_nameservice.*)
+               'olsrd_nameservice.'*)
                        config_get name "$cfg" name
                        [ -z "$name" ] && config_set "$cfg" name $SYSTEM_HOSTNAME
 
@@ -527,7 +543,7 @@ olsrd_write_loadplugin() {
 
                        [ -z "$latlon_file" ] && config_set "$cfg" latlon_file '/var/run/latlon.js'
                ;;
-               olsrd_watchdog.*)
+               'olsrd_watchdog.'*)
                        config_get wd_file "$cfg" file
                ;;
        esac
@@ -535,8 +551,6 @@ olsrd_write_loadplugin() {
        echo -n "${N}LoadPlugin \"$library\"${N}{"
        config_write_options "$OLSRD_LOADPLUGIN_SCHEMA" "$cfg" olsrd_write_plparam "${T}"
        echo "${N}}"
-
-       return 0
 }
 
 olsrd_write_interface() {