implement IRC proposal to refresh supernodes

//ship/src/refresh-supers is the script which will update your tinc config and
choose 5 working supernodes for you to connect to.

This proposal may become part of the tinc.krebsco.de install script

3 files changed, 32 insertions, 2 deletions

diff --git a/ship/lib/retiolum b/ship/lib/retiolum
index 3956a200..1e55041c 100644
--- a/ship/lib/retiolum
+++ b/ship/lib/retiolum
@@ -1,10 +1,28 @@
 #!/bin/sh
 # retiolum host functions
 #@include core
+#@include network
 tinc_path=${tinc_path:-/etc/tinc}
 netname=${netname:-retiolum}
 hosts_dir=${hosts_dir:-$tinc_path/$netname/hosts}
+supernode_urls="http://euer.krebsco.de/retiolum/supernodes.tar.gz"
+reload_tinc(){
+  info "reloading tinc configuration"
+  pkill -HUP tincd || tinc -n $netname reload;
+}
 
+refresh_supernode_keys(){
+  for url in $supernode_urls;do
+    info "Trying $url to retrieve supernodes"
+    if http_get "$url" \
+       | tar xvz -C $hosts_dir | xargs -n1 echo "refreshed:" ;then
+      info "refreshed supernode keys"
+      return 0
+    else
+      error "$url unusable for retrieving supernode host files"
+    fi
+  done && return 1
+}
 
 find_supernodes(){
   cd $hosts_dir
@@ -67,7 +85,7 @@ check_free_v4(){
     info "Check if ip is still free: "
     for i in `ls -1`; do
       if grep -q -e $myipv4\$ $i ;then
-        warn "Host IP already taken by $i! "
+        error "Host IP already taken by $i! "
         return 1
       fi
     done
diff --git a/ship/src/refresh-super-keys b/ship/src/refresh-super-keys
new file mode 100644
index 00000000..dddbe846
--- /dev/null
+++ b/ship/src/refresh-super-keys
@@ -0,0 +1,5 @@
+#!/bin/sh
+#@info
+#@include retiolum
+#@mainifyme
+refresh_supernode_keys
diff --git a/ship/src/refresh-supers b/ship/src/refresh-supers
index 26909a94..af31a5df 100644
--- a/ship/src/refresh-supers
+++ b/ship/src/refresh-supers
@@ -1,6 +1,9 @@
 #!/bin/sh
 #@info
 # usage: [DEBUG=1] [tincconf=/not/tinc/retiolum/tinc.conf] $0 
+# This is the implementation of the proposal how to update tinc supernode
+# connections 
+
 #@include core
 #@include retiolum
   # using find_supernodes
@@ -10,12 +13,14 @@
 #@strict
 #@mainifyme
 
+refresh_supernode_keys
+
 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"
+sed '/^[  ]*ConnectTo/d' "$tincconf" > "$tmp_tincconf"
 
 find_supernodes | cut -d\  -f 1 | shuf \
   | head -n "${max_connect_to}" \
@@ -24,3 +29,5 @@ find_supernodes | cut -d\  -f 1 | shuf \
 info "replacing old tinc.conf with one"
 test "${DEBUG:-}" && diff "$tincconf" "$tmp_tincconf"
 mv "$tmp_tincconf" "$tincconf"
+
+tinc_reload