[Minor] Use modern syntax in rules registration

rules/headers_checks.lua

@@ -419,8 +419,10 @@ rspamd_config.FAKE_REPLY = {
   score = 1.0
 }
 
-local check_from_id = rspamd_config:register_callback_symbol('CHECK_FROM', 1.0,
-  function(task)
+local check_from_id = rspamd_config:register_symbol{
+  name = 'CHECK_FROM',
+  type = 'callback',
+  callback = function(task)
     local envfrom = task:get_from(1)
     local from = task:get_from(2)
     if (from and from[1] and not from[1].name) then
@@ -464,29 +466,85 @@ local check_from_id = rspamd_config:register_callback_symbol('CHECK_FROM', 1.0,
       task:insert_result('TO_DOM_EQ_FROM_DOM', 1.0)
     end
   end
-)
+}
+
+rspamd_config:register_symbol{
+  name = 'FROM_NO_DN',
+  score = 0,
+  group = 'header',
+  parent = check_from_id,
+  type = 'virtual',
+  description = 'From header does not have a display name',
+}
+rspamd_config:register_symbol{
+  name = 'FROM_DN_EQ_ADDR',
+  score = 1.0,
+  group = 'header',
+  parent = check_from_id,
+  type = 'virtual',
+  description = 'From header display name is the same as the address',
+}
+rspamd_config:register_symbol{
+  name = 'FROM_HAS_DN',
+  score = 0.0,
+  group = 'header',
+  parent = check_from_id,
+  type = 'virtual',
+  description = 'From header has a display name',
+}
+rspamd_config:register_symbol{
+  name = 'FROM_NAME_EXCESS_SPACE',
+  score = 1.0,
+  group = 'header',
+  parent = check_from_id,
+  type = 'virtual',
+  description = 'From header display name contains excess whitespace',
+}
+rspamd_config:register_symbol{
+  name = 'FROM_NAME_HAS_TITLE',
+  score = 1.0,
+  group = 'header',
+  parent = check_from_id,
+  type = 'virtual',
+  description = 'From header display name has a title (Mr/Mrs/Dr)',
+}
+rspamd_config:register_symbol{
+  name = 'FROM_EQ_ENVFROM',
+  score = 0.0,
+  group = 'header',
+  parent = check_from_id,
+  type = 'virtual',
+  description = 'From address is the same as the envelope',
+}
+rspamd_config:register_symbol{
+  name = 'FROM_NEQ_ENVFROM',
+  score = 0.0,
+  group = 'header',
+  parent = check_from_id,
+  type = 'virtual',
+  description = 'From address is different to the envelope',
+}
+rspamd_config:register_symbol{
+  name = 'TO_EQ_FROM',
+  score = 0.0,
+  group = 'header',
+  parent = check_from_id,
+  type = 'virtual',
+  description = 'To address matches the From address',
+}
+rspamd_config:register_symbol{
+  name = 'TO_DOM_EQ_FROM_DOM',
+  score = 0.0,
+  group = 'header',
+  parent = check_from_id,
+  type = 'virtual',
+  description = 'To domain is the same as the From domain',
+}
 
-rspamd_config:register_virtual_symbol('FROM_NO_DN', 1.0, check_from_id)
-rspamd_config:set_metric_symbol('FROM_NO_DN', 0, 'From header does not have a display name')
-rspamd_config:register_virtual_symbol('FROM_DN_EQ_ADDR', 1.0, check_from_id)
-rspamd_config:set_metric_symbol('FROM_DN_EQ_ADDR', 1.0, 'From header display name is the same as the address')
-rspamd_config:register_virtual_symbol('FROM_HAS_DN', 1.0, check_from_id)
-rspamd_config:set_metric_symbol('FROM_HAS_DN', 0, 'From header has a display name')
-rspamd_config:register_virtual_symbol('FROM_NAME_EXCESS_SPACE', 1.0, check_from_id)
-rspamd_config:set_metric_symbol('FROM_NAME_EXCESS_SPACE', 1.0, 'From header display name contains excess whitespace')
-rspamd_config:register_virtual_symbol('FROM_NAME_HAS_TITLE', 1.0, check_from_id)
-rspamd_config:set_metric_symbol('FROM_NAME_HAS_TITLE', 1.0, 'From header display name has a title (Mr/Mrs/Dr)')
-rspamd_config:register_virtual_symbol('FROM_EQ_ENVFROM', 1.0, check_from_id)
-rspamd_config:set_metric_symbol('FROM_EQ_ENVFROM', 0, 'From address is the same as the envelope')
-rspamd_config:register_virtual_symbol('FROM_NEQ_ENVFROM', 1.0, check_from_id)
-rspamd_config:set_metric_symbol('FROM_NEQ_ENVFROM', 0, 'From address is different to the envelope')
-rspamd_config:register_virtual_symbol('TO_EQ_FROM', 1.0, check_from_id)
-rspamd_config:set_metric_symbol('TO_EQ_FROM', 0, 'To address matches the From address')
-rspamd_config:register_virtual_symbol('TO_DOM_EQ_FROM_DOM', 1.0, check_from_id)
-rspamd_config:set_metric_symbol('TO_DOM_EQ_FROM_DOM', 0, 'To domain is the same as the From domain')
-
-local check_to_cc_id = rspamd_config:register_callback_symbol('CHECK_TO_CC', 1.0,
-  function(task)
+local check_to_cc_id = rspamd_config:register_symbol{
+  name = 'CHECK_TO_CC',
+  type = 'callback',
+  callback = function(task)
     local rcpts = task:get_recipients(1)
     local to = task:get_recipients(2)
     local to_match_envrcpt = 0
@@ -542,21 +600,69 @@ local check_to_cc_id = rspamd_config:register_callback_symbol('CHECK_TO_CC', 1.0
       task:insert_result('TO_MATCH_ENVRCPT_SOME', 1.0)
     end
   end
-)
+}
 
-rspamd_config:register_virtual_symbol('TO_DN_RECIPIENTS', 1.0, check_to_cc_id)
-rspamd_config:set_metric_symbol('TO_DN_RECIPIENTS', 2.0, 'To header display name is "Recipients"')
-rspamd_config:register_virtual_symbol('TO_DN_NONE', 1.0, check_to_cc_id)
-rspamd_config:set_metric_symbol('TO_DN_NONE', 0, 'None of the recipients have display names')
-rspamd_config:register_virtual_symbol('TO_DN_ALL', 1.0, check_to_cc_id)
-rspamd_config:set_metric_symbol('TO_DN_ALL', 0, 'All of the recipients have display names')
-rspamd_config:register_virtual_symbol('TO_DN_SOME', 1.0, check_to_cc_id)
-rspamd_config:set_metric_symbol('TO_DN_SOME', 0, 'Some of the recipients have display names')
-rspamd_config:register_virtual_symbol('TO_DN_EQ_ADDR_ALL', 1.0, check_to_cc_id)
-rspamd_config:set_metric_symbol('TO_DN_EQ_ADDR_ALL', 0, 'All of the recipients have display names that are the same as their address')
-rspamd_config:register_virtual_symbol('TO_DN_EQ_ADDR_SOME', 1.0, check_to_cc_id)
-rspamd_config:set_metric_symbol('TO_DN_EQ_ADDR_SOME', 0, 'Some of the recipients have display names that are the same as their address')
-rspamd_config:register_virtual_symbol('TO_MATCH_ENVRCPT_ALL', 1.0, check_to_cc_id)
-rspamd_config:set_metric_symbol('TO_MATCH_ENVRCPT_ALL', 0, 'All of the recipients match the envelope')
-rspamd_config:register_virtual_symbol('TO_MATCH_ENVRCPT_SOME', 1.0, check_to_cc_id)
-rspamd_config:set_metric_symbol('TO_MATCH_ENVRCPT_SOME', 0, 'Some of the recipients match the envelope')
+rspamd_config:register_symbol{
+  name = 'TO_DN_RECIPIENTS',
+  score = 2.0,
+  group = 'header',
+  parent = check_to_cc_id,
+  type = 'virtual',
+  description = 'To header display name is "Recipients"',
+}
+rspamd_config:register_symbol{
+  name = 'TO_DN_NONE',
+  score = 0.0,
+  group = 'header',
+  parent = check_to_cc_id,
+  type = 'virtual',
+  description = 'None of the recipients have display names',
+}
+rspamd_config:register_symbol{
+  name = 'TO_DN_ALL',
+  score = 0.0,
+  group = 'header',
+  parent = check_to_cc_id,
+  type = 'virtual',
+  description = 'All the recipients have display names',
+}
+rspamd_config:register_symbol{
+  name = 'TO_DN_SOME',
+  score = 0.0,
+  group = 'header',
+  parent = check_to_cc_id,
+  type = 'virtual',
+  description = 'Some of the recipients have display names',
+}
+rspamd_config:register_symbol{
+  name = 'TO_DN_EQ_ADDR_ALL',
+  score = 0.0,
+  group = 'header',
+  parent = check_to_cc_id,
+  type = 'virtual',
+  description = 'All of the recipients have display names that are the same as their address',
+}
+rspamd_config:register_symbol{
+  name = 'TO_DN_EQ_ADDR_SOME',
+  score = 0.0,
+  group = 'header',
+  parent = check_to_cc_id,
+  type = 'virtual',
+  description = 'Some of the recipients have display names that are the same as their address',
+}
+rspamd_config:register_symbol{
+  name = 'TO_MATCH_ENVRCPT_ALL',
+  score = 0.0,
+  group = 'header',
+  parent = check_to_cc_id,
+  type = 'virtual',
+  description = 'All of the recipients match the envelope',
+}
+rspamd_config:register_symbol{
+  name = 'TO_MATCH_ENVRCPT_SOME',
+  score = 0.0,
+  group = 'header',
+  parent = check_to_cc_id,
+  type = 'virtual',
+  description = 'Some of the recipients match the envelope',
+}

rules/misc.lua

@@ -191,26 +191,26 @@ rspamd_config.ENVFROM_VERP = {
 }
 
 rspamd_config.RCVD_TLS_ALL = {
-    callback = function (task)
-        local rcvds = task:get_header_full('Received')
-        if not rcvds then return false end
-        local count = 0
-        local encrypted = 0
-        for _, rcvd in ipairs(rcvds) do
-            count = count + 1
-            local r = rcvd['decoded']:lower()
-            local with = r:match('%swith%s+(e?smtps?a?)')
-            if with and with:match('esmtps') then
-                encrypted = encrypted + 1
-            end
-        end
-        if (count > 0 and count == encrypted) then
-            return true
-        end
-    end,
-    score = 0.0,
-    description = "All hops used encrypted transports",
-    group = "encryption"
+  callback = function (task)
+    local rcvds = task:get_header_full('Received')
+    if not rcvds then return false end
+    local count = 0
+    local encrypted = 0
+    for _, rcvd in ipairs(rcvds) do
+      count = count + 1
+      local r = rcvd['decoded']:lower()
+      local with = r:match('%swith%s+(e?smtps?a?)')
+      if with and with:match('esmtps') then
+        encrypted = encrypted + 1
+      end
+    end
+    if (count > 0 and count == encrypted) then
+      return true
+    end
+  end,
+  score = 0.0,
+  description = "All hops used encrypted transports",
+  group = "encryption"
 }
 
 rspamd_config.RCVD_HELO_USER = {