Implements OS distribution

Implements #2874

scripts/lua/os_details.lua

@@ -0,0 +1,74 @@
+--
+-- (C) 2013-21 - ntop.org
+--
+
+dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+
+require "lua_utils"
+local graph_utils = require "graph_utils"
+
+local page_utils = require("page_utils")
+
+local OS        = _GET["os"]
+local page      = _GET["page"]
+
+interface.select(ifname)
+local ifstats = interface.getStats()
+local ifId = ifstats.id
+local ts_utils = require("ts_utils")
+
+sendHTTPContentTypeHeader('text/html')
+
+
+page_utils.set_active_menu_entry(page_utils.menu_entries.countries)
+
+dofile(dirs.installdir .. "/scripts/lua/inc/menu.lua")
+
+if(OS == nil) then
+    print("<div class=\"alert alert alert-danger\"><img src=".. ntop.getHttpPrefix() .. "/img/warning.png> ".. i18n("os_details.os_parameter_missing_message") .. "</div>")
+    return
+end
+
+if(not ts_utils.exists("os:traffic", {ifid=ifId, os=OS})) then
+    print("<div class=\"alert alert alert-danger\"><img src=".. ntop.getHttpPrefix() .. "/img/warning.png> " .. i18n("os_details.no_available_stats_for_os",{os=OS}) .. "</div>")
+    return
+end
+
+--[[
+Create Menu Bar with buttons
+--]]
+local nav_url = ntop.getHttpPrefix().."/lua/os_details.lua?country="..OS
+local title = i18n("os_details.os") .. ": "..OS
+
+   page_utils.print_navbar(title, nav_url,
+			   {
+			      {
+				 active = page == "historical" or not page,
+				 page_name = "historical",
+				 label = "<i class='fas fa-lg fa-chart-area'></i>",
+			      },
+			   }
+   )
+
+--[[
+Selectively render information pages
+--]]
+if page == "historical" then
+    local schema = _GET["ts_schema"] or "os:traffic"
+    local selected_epoch = _GET["epoch"] or ""
+    local url = ntop.getHttpPrefix()..'/lua/os_details.lua?ifid='..ifId..'&os='..OS..'&page=historical'
+
+    local tags = {
+      ifid = ifId,
+      os = OS,
+    }
+
+    graph_utils.drawGraphs(ifId, schema, tags, _GET["zoom"], url, selected_epoch, {
+      timeseries = {
+        {schema="os:traffic", label=i18n("traffic"), split_directions = true},
+      }
+    })
+end
+
+dofile(dirs.installdir .. "/scripts/lua/inc/footer.lua")