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--
-- (C) 2021 - ntop.org
--
local dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
require "lua_utils"
local json = require("dkjson")
local categories_utils = require("categories_utils")
local page_utils = require("page_utils")
sendHTTPContentTypeHeader('text/html')
-- ################################################
-- Table parameters
local currentPage = _GET["currentPage"]
local perPage = _GET["perPage"]
local sortColumn = _GET["sortColumn"]
local sortOrder = _GET["sortOrder"]
local category_filter = _GET["l7proto"]
-- ################################################
-- Sorting and Pagination
local sortPrefs = "custom_categories_hosts"
if((sortColumn == nil) or (sortColumn == "column_"))then
sortColumn = getDefaultTableSort(sortPrefs)
else
if((sortColumn ~= "column_")
and (sortColumn ~= "")) then
tablePreferences("sort_"..sortPrefs,sortColumn)
end
end
if(sortOrder == nil) then
sortOrder = getDefaultTableSortOrder(sortPrefs)
else
if((sortColumn ~= "column_")
and (sortColumn ~= "")) then
tablePreferences("sort_order_"..sortPrefs,sortOrder)
end
end
if currentPage == nil then
currentPage = 1
else
currentPage = tonumber(currentPage)
end
if perPage == nil then
perPage = getDefaultTableSize()
else
perPage = tonumber(perPage)
tablePreferences("rows_number", perPage)
end
-- ################################################
interface.select(ifname)
local ifid = getInterfaceId(ifname)
local to_skip = (currentPage-1) * perPage
if sortOrder == "desc" then sOrder = rev_insensitive else sOrder = asc_insensitive end
local items = {}
local sorter = {}
local num_items = 0
local items = interface.getnDPICategories()
for item_name, item_id in pairs(items) do
if not isEmptyString(category_filter) and (category_filter ~= item_id) then
goto continue
end
local hosts_list = categories_utils.getCustomCategoryHosts(item_id)
local num_hosts = #hosts_list
local num_protocols = table.len(interface.getnDPIProtocols(tonumber(item_id)))
items[item_name] = { name = item_name, id = item_id, num_hosts = num_hosts, hosts_list = hosts_list , num_protocols = num_protocols }
num_items = num_items + 1
if sortColumn == "column_" or sortColumn == "column_category_name" then
sorter[item_name] = getCategoryLabel(item_name)
elseif sortColumn == "column_num_hosts" then
sorter[item_name] = num_hosts
elseif sortColumn == "column_num_protos" then
sorter[item_name] = num_protocols
end
::continue::
end
local res_formatted = {}
local cur_num = 0
for sorted_item, _ in pairsByValues(sorter, sOrder) do
cur_num = cur_num + 1
if cur_num <= to_skip then
goto continue
elseif cur_num > to_skip + perPage then
break
end
local record = {}
record["column_category_id"] = tostring(items[sorted_item]["id"])
record["column_category_name"] = getCategoryLabel(items[sorted_item]["name"])
record["column_num_hosts"] = tostring(items[sorted_item].num_hosts)
record["column_num_protos"] = string.format('<a href="%s/lua/admin/edit_categories?tab=protocols&category=cat_%u">%s</a>', ntop.getHttpPrefix(), items[sorted_item]["id"], tostring(items[sorted_item].num_protocols))
record["column_category_hosts"] = table.concat(items[sorted_item].hosts_list, ",")
res_formatted[#res_formatted + 1] = record
::continue::
end
local result = {}
result["perPage"] = perPage
result["currentPage"] = currentPage
result["totalRows"] = num_items
result["data"] = res_formatted
result["sort"] = {{sortColumn, sortOrder}}
print(json.encode(result, nil))
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