gluon-core: rename site_seed to domain_seed

[Matthias Schiffer: rebase]

docs/site-example/site.conf

@@ -18,7 +18,7 @@
   -- 32 bytes of random data, encoded in hexadecimal
   -- Must be the same for all nodes in one mesh domain
   -- Can be generated using: echo $(hexdump -v -n 32 -e '1/1 "%02x"' </dev/urandom)
-  site_seed = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
+  domain_seed = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
 
   -- Prefixes used within the mesh.
   -- prefix6 is required, prefix4 can be omitted if next_node.ip4

docs/user/site.rst

@@ -21,7 +21,7 @@ site_code
     The code of your community. It is good practice to use the TLD of
     your community here.
 
-site_seed
+domain_seed
     32 bytes of random data, encoded in hexadecimal, used to seed other random
     values specific to the mesh domain. It must be the same for all nodes of one
     mesh, but should be different for firmwares that are not supposed to mesh with

package/gluon-core/check_site.lua

 need_string 'site_code'
 need_string 'site_name'
-need_string_match('site_seed', '^' .. ('%x'):rep(64) .. '$')
+need_string_match('domain_seed', '^' .. ('%x'):rep(64) .. '$')
 
 if need_table('opkg', nil, false) then
 	need_string('opkg.lede', false)

package/gluon-core/files/lib/netifd/proto/gluon_wired.sh

@@ -44,7 +44,7 @@ proto_gluon_wired_setup() {
                 json_add_string tunlink "$config"
                 json_add_string ip6addr "$(interface_linklocal "$ifname")"
                 json_add_string peer6addr 'ff02::15c'
-                json_add_int vid "$(lua -lgluon.util -e 'print(tonumber(gluon.util.site_seed_bytes("gluon-mesh-vxlan", 3), 16))')"
+                json_add_int vid "$(lua -lgluon.util -e 'print(tonumber(gluon.util.domain_seed_bytes("gluon-mesh-vxlan", 3), 16))')"
                 json_close_object
                 ubus call network add_dynamic "$(json_dump)"
         fi

package/gluon-core/luasrc/usr/lib/lua/gluon/util.lua

@@ -122,7 +122,7 @@ function node_id()
 	return string.gsub(sysconfig.primary_mac, ':', '')
 end
 
-function site_seed_bytes(key, length)
+function domain_seed_bytes(key, length)
 	local ret = ''
 	local v = ''
 	local i = 0
@@ -131,7 +131,7 @@ function site_seed_bytes(key, length)
 	-- cryptographic strength
 	while ret:len() < 2*length do
 		i = i + 1
-		v = hash.md5(v .. key .. site.site_seed():lower() .. i)
+		v = hash.md5(v .. key .. site.domain_seed():lower() .. i)
 		ret = ret .. v
 	end