Reworks plugin loading and structure

Implements #4358

scripts/plugins/alerts/security/device_application_not_allowed/manifest.lua

@@ -0,0 +1,10 @@
+--
+-- (C) 2019-20 - ntop.org
+--
+
+return {
+  title = "Device Application Not Allowed",
+  description = "Detects applications not allowed for a specific device type and triggers alerts",
+  author = "ntop",
+  dependencies = {},
+}

scripts/plugins/alerts/security/device_application_not_allowed/user_scripts/flow/device_protocol_not_allowed.lua

@@ -0,0 +1,67 @@
+--
+-- (C) 2019-20 - ntop.org
+--
+
+local flow_consts = require("flow_consts")
+local user_scripts = require("user_scripts")
+
+-- #################################################################
+
+local script = {
+  -- Script category
+  category = user_scripts.script_categories.security, 
+
+  -- NOTE: hooks defined below
+  hooks = {},
+
+  gui = {
+    i18n_title = "flow_callbacks_config.dev_proto_not_allowed",
+    i18n_description = i18n(
+      ternary(ntop.isnEdge(), "flow_callbacks_config.dev_proto_not_allowed_nedge_description", "flow_callbacks_config.dev_proto_not_allowed_description"),
+      {url = getDeviceProtocolPoliciesUrl()}),
+  }
+}
+
+-- #################################################################
+
+function script.hooks.protocolDetected(now)
+  if(flow.isDeviceProtocolNotAllowed()) then
+    local proto_info = flow.getDeviceProtoAllowedInfo()
+    local flow_score = 80
+    local cli_score, srv_score
+
+    local alert_info = {
+      ["cli.devtype"] = proto_info["cli.devtype"],
+      ["srv.devtype"] = proto_info["srv.devtype"],
+    }
+
+    if(not proto_info["cli.allowed"]) then
+      alert_info["devproto_forbidden_peer"] = "cli"
+      alert_info["devproto_forbidden_id"] = proto_info["cli.disallowed_proto"]
+      cli_score = 80
+      srv_score = 5
+    else
+      alert_info["devproto_forbidden_peer"] = "srv"
+      alert_info["devproto_forbidden_id"] = proto_info["srv.disallowed_proto"]
+      cli_score = 5
+      srv_score = 80
+    end
+
+    flow.triggerStatus(
+       flow_consts.status_types.status_device_protocol_not_allowed.create(
+	  flow_consts.status_types.status_device_protocol_not_allowed.alert_severity,
+	  alert_info["cli.devtype"],
+	  alert_info["srv.devtype"],
+	  alert_info["devproto_forbidden_peer"],
+	  alert_info["devproto_forbidden_id"]
+       ),
+       flow_score,
+       cli_score,
+       srv_score
+    )
+  end
+end
+
+-- #################################################################
+
+return script