add //ship/src/refresh-supers

this script updates the currently configured supernodes in
/etc/tinc/retiolum/tinc.conf with 5 random working supernodes in the retiolum
darknet.
The tinc.conf file can be given via environment.
the hosts should be up-to-date in order to find all available supernodes.

3 files changed, 35 insertions, 6 deletions

diff --git a/ship/lib/retiolum b/ship/lib/retiolum
index 015537bd..2a5c7338 100644
--- a/ship/lib/retiolum
+++ b/ship/lib/retiolum
@@ -1,8 +1,9 @@
 #!/bin/sh
 # retiolum host functions
 #@include core
+tinc_path=${tinc_path:-/etc/tinc}
 netname=${netname:-retiolum}
-
+hosts_dir=${hosts_dir:-$tinc_path/$netname/hosts}
 
 check_free_v4(){
   myipv4=${1-10.243.0.-1}
@@ -11,7 +12,7 @@ check_free_v4(){
   if [ "$v4num" -gt 0 -a "$v4num" -lt "256" ];
   then 
     info "No retard detected\n"
-    cd /etc/tinc/$netname/hosts
+    cd $hosts_dir
     info "Check if ip is still free: "
     for i in `ls -1`; do
       if grep -q -e $myipv4\$ $i ;then
@@ -30,8 +31,9 @@ check_free_v4(){
 
 find_active_nodes(){
   # TODO this function currently only supports a single address for a host
-  cd /etc/tinc/retiolum/hosts
+  cd $hosts_dir
   # posix grep does not support [[:space:]]
+  set +f
   for name in `
     grep '^[  ]*Address[  ]*=' * |
       cut -d: -f1 | sort | uniq
@@ -53,7 +55,8 @@ find_active_nodes(){
   cd - >/dev/null
 }
 find_supernodes(){
-  cd /etc/tinc/retiolum/hosts
+  cd $hosts_dir
+  set +f
   for name in `
     grep '^[  ]*Address[  ]*=' * |
       cut -d: -f1 | sort | uniq
diff --git a/ship/src/find-supers-tinc b/ship/src/find-supers-tinc
index edbb5a7b..3ea53d35 100644
--- a/ship/src/find-supers-tinc
+++ b/ship/src/find-supers-tinc
@@ -1,6 +1,6 @@
 #!/bin/sh
+#@info
 #@include core
 #@include retiolum
 
-find_supernodes | cut -d\  -f 1 | shuf | head -n 5 \
-  | xargs -n1 printf "ConnectTo=%s\n"
+find_supernodes
diff --git a/ship/src/refresh-supers b/ship/src/refresh-supers
new file mode 100644
index 00000000..26909a94
--- /dev/null
+++ b/ship/src/refresh-supers
@@ -0,0 +1,26 @@
+#!/bin/sh
+#@info
+# usage: [DEBUG=1] [tincconf=/not/tinc/retiolum/tinc.conf] $0 
+#@include core
+#@include retiolum
+  # using find_supernodes
+  #       tinc_path
+  #       netname
+
+#@strict
+#@mainifyme
+
+max_connect_to=${max_connect_to:-5}
+tincconf=${tincconf:-$tinc_path/$netname/tinc.conf}
+tmp_tincconf=$(mktemp)
+defer "rm -f $tmp_tincconf"
+
+sed '/[  ]*ConnectTo=/d' "$tincconf" > "$tmp_tincconf"
+
+find_supernodes | cut -d\  -f 1 | shuf \
+  | head -n "${max_connect_to}" \
+  | xargs -n1 printf "ConnectTo=%s\n" >> "$tmp_tincconf"
+
+info "replacing old tinc.conf with one"
+test "${DEBUG:-}" && diff "$tincconf" "$tmp_tincconf"
+mv "$tmp_tincconf" "$tincconf"