Adds new REST API v2/

Addresses #5269

scripts/lua/rest/v2/get/host/fingerprint/data.lua

@@ -0,0 +1,76 @@
+ --
+-- (C) 2013-21 - ntop.org
+--
+
+local dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+
+require "lua_utils"
+local graph_utils = require "graph_utils"
+require "flow_utils"
+require "historical_utils"
+local fingerprint_utils = require "fingerprint_utils"
+local rest_utils = require("rest_utils")
+
+local available_fingerprints = {
+   ja3 = {
+      stats_key = "ja3_fingerprint",
+      href = function(fp) return '<A HREF="https://sslbl.abuse.ch/ja3-fingerprints/'..fp..'" target="_blank">'..fp..'</A>  <i class="fas fa-external-link-alt"></i>' end
+   },
+   hassh = {
+      stats_key = "hassh_fingerprint",
+      href = function(fp) return fp end
+   }
+}
+
+-- Parameters used for the rest answer --
+local rc
+local res = {}
+
+local ifid = _GET["ifid"]
+local host_info = url2hostinfo(_GET)
+local fingerprint_type = _GET["fingerprint_type"]
+
+
+-- #####################################################################
+
+local stats
+
+if isEmptyString(fingerprint_type) then
+    rc = rest_utils.consts.err.invalid_args
+    rest_utils.answer(rc)
+    return
+ end
+
+if isEmptyString(ifid) then
+   rc = rest_utils.consts.err.invalid_interface
+   rest_utils.answer(rc)
+   return
+end
+
+if isEmptyString(host_info["host"]) then
+   rc = rest_utils.consts.err.invalid_args
+   rest_utils.answer(rc)
+   return
+end
+
+if(host_info["host"] ~= nil) then
+   stats = interface.getHostInfo(host_info["host"], host_info["vlan"])
+end
+
+stats = stats or {}
+
+if fingerprint_type == "ja3" then
+   stats = stats and stats.ja3_fingerprint or {}
+elseif fingerprint_type == "hassh" then
+   stats = stats and stats.hassh_fingerprint or {}
+end
+
+for key, value in pairs(stats) do
+   res[#res + 1] = value
+   res[#res][fingerprint_type] = key
+end
+
+rc = rest_utils.consts.success.ok
+rest_utils.answer(rc, res)
+