freifunk-common: neigh.sh - show hostnames

if nameservice-plugin is configured, we read
in all locally known hostnames and show them
in the output:

root@stuttgarter-core:~# neigh.sh
Local          Remote         vTime  LQ       NLQ      Cost Host
10.230.105.241 10.230.105.246 138851 1.000000 1.000000 1024 stuttgarter-rhnk.olsr
10.230.105.241 10.230.105.247 135717 1.000000 1.000000 1024 stuttgarter-emma.olsr
10.230.105.241 10.230.105.244 138309 1.000000 1.000000 1024 stuttgarter-sued.olsr
10.230.105.241 10.230.105.245 136001 1.000000 1.000000 1024 stuttgarter-west.olsr
10.230.105.241 10.230.105.242 134818 1.000000 1.000000 1024 stuttgarter-nord.olsr
10.230.105.241 10.230.105.243 137187 1.000000 1.000000 1024 stuttgarter-ost.olsr
10.230.105.241 10.230.105.250 139984 1.000000 1.000000 1024 stuttgarter-hof2.olsr
10.230.105.241 10.230.105.251 138294 1.000000 1.000000 1024 stuttgarter-stra2.olsr

Local               Remote              vTime  LQ       NLQ      Cost Host
2001:bf7:820:901::1 2001:bf7:820:950::1 139703 1.000000 1.000000 1024 stuttgarter-rhnk.olsr
2001:bf7:820:901::1 2001:bf7:820:960::1 139541 1.000000 1.000000 1024 stuttgarter-emma.olsr
2001:bf7:820:901::1 2001:bf7:820:990::1 140415 1.000000 1.000000 1024 stuttgarter-hof2.olsr
2001:bf7:820:901::1 fde6:24f1:a388::1   141338 1.000000 1.000000 1024

the filenames for the olsrd hosts-file is taken from uci
and falls back to sane defaults.

Signed-off-by: Bastian Bittorf <bittorf@bluebottle.com>

1 files changed, 63 insertions, 2 deletions

diff --git a/contrib/package/freifunk-common/files/usr/bin/neigh.sh b/contrib/package/freifunk-common/files/usr/bin/neigh.sh
index cf4342450c..b1dc01a77e 100755
--- a/contrib/package/freifunk-common/files/usr/bin/neigh.sh
+++ b/contrib/package/freifunk-common/files/usr/bin/neigh.sh
@@ -2,9 +2,69 @@
 
 . /usr/share/libubox/jshn.sh
 
-VARS="localIP:Local remoteIP:Remote validityTime:vTime linkQuality:LQ neighborLinkQuality:NLQ linkCost:Cost"
+hostsfile_getname()
+{
+	local config="$1"
+	local i=0
+	local value file
 
-for HOST in 127.0.0.1 ::1;do
+	while value="$( uci -q get $config.@LoadPlugin[$i].library )"; do {
+		case "$value" in
+			'olsrd_nameservice.so.'*)
+				file="$( uci -q get $config.@LoadPlugin[$i].hosts_file )"
+				break
+			;;
+		esac
+
+		i=$(( i + 1 ))
+	} done
+
+	echo "${file:-/var/run/hosts_olsr}"
+}
+
+read_hostnames()
+{
+	local file_list=" $( hostsfile_getname 'olsrd' ) $(hostsfile_getname 'olsrd6' ) "
+	local line ip hostname file file_list_uniq
+
+	for file in $file_list; do {
+		case " $file_list_uniq " in
+			*" $file "*)
+			;;
+			*)
+				file_list_uniq="$file_list_uniq $file"
+			;;
+		esac
+	} done
+
+	for file in $file_list_uniq; do {
+		[ -e "$file" ] || continue
+
+		while read -r line; do {
+			case "$line" in
+				[0-9]*)
+					# 2001:bf7:820:901::1 stuttgarter-core.olsr   # myself
+					# 10.63.160.161  AlexLaterne    # 10.63.160.161
+					set -f
+					set +f -- $line
+					ip="$1"
+					hostname="$2"
+
+					# global vars, e.g.
+					# IP_1_2_3_4='foo' or IP_2001_bf7_820_901__1='bar'
+					eval IP_${ip//[.:]/_}="$hostname"
+				;;
+			esac
+		} done <"$file"
+	} done
+}
+
+read_hostnames
+
+VARS='localIP:Local remoteIP:Remote validityTime:vTime linkQuality:LQ'
+VARS="$VARS neighborLinkQuality:NLQ linkCost:Cost remoteHostname:Host"
+
+for HOST in '127.0.0.1' '::1';do
 	json_init
 	json_load "$(echo /links|nc ${HOST} 9090)"
 	if json_is_a links array;then
@@ -29,6 +89,7 @@ for HOST in 127.0.0.1 ::1;do
 				;;*)
 					for v in ${VARS};do
 						eval printf \"%-\${_${v%:*}}s \" \$${v%:*}
+						eval remoteHostname="\$IP_${remoteIP//[.:]/_}"
 					done
 					echo
 				;;esac