Initial support for DHCP range configuration

scripts/lua/admin/dhcp.lua

@@ -0,0 +1,191 @@
+--
+-- (C) 2017-18 - ntop.org
+--
+
+local dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+
+require "lua_utils"
+local dhcp_utils = require("dhcp_utils")
+local template = require("template_utils")
+
+-- Administrator check
+if not isAdministrator() then
+  return
+end
+
+if _POST["dhcp_ranges"] then
+  dhcp_utils.setRanges(ifid, _POST["dhcp_ranges"])
+end
+
+print(
+  template.gen("modal_confirm_dialog.html", {
+    dialog={
+      id      = "delete_dhcp_range_dialog",
+      action  = "deleteDhcpRange()",
+      title   = i18n("dhcp.delete_range"),
+      message = i18n("dhcp.delete_range_confirm", {range="<span id=\"range-to-delete\"></span>"}),
+      confirm = i18n("delete"),
+    }
+  })
+)
+
+print[[
+<form id="table-manage-form">
+  <div id="table-manage"></div>
+  <button class="btn btn-primary" style="float:right; margin-right:1em;" disabled="disabled" type="submit">]] print(i18n("save_settings")) print[[</button>
+</form>
+<br><br>
+
+<script>
+  var range_to_delete;
+
+  $("#table-manage").datatable({
+      url: "]]
+   print (ntop.getHttpPrefix())
+   print [[/lua/get_dhcp_config.lua?ifid=]] print(tostring(ifid)) print[[",
+      title: "",
+      forceTable: true,
+      hidePerPage: true,
+      perPage: 8, // TODO
+      buttons: [
+         '<a id="addRangeBtn" onclick="addDhcpRow()" role="button" class="add-on btn" data-toggle="modal"><i class="fa fa-plus" aria-hidden="true"></i></a>'
+      ], columns: [
+         {
+            title: "]] print(i18n("nedge.dhcp_first_ip")) print[[",
+            field: "column_first_ip",
+            css: {
+               textAlign: 'left',
+            }
+         }, {
+            title: "]] print(i18n("nedge.dhcp_last_ip")) print[[",
+            field: "column_last_ip",
+            css : {
+               textAlign: 'left',
+            }
+         }, {
+            title: "]] print(i18n("actions")) print[[",
+            css : {
+               width: '15%',
+               textAlign: 'center',
+            }
+         }
+      ], tableCallback: function() {
+        var pools_ctr = 0;
+
+        if(datatableIsEmpty("#table-manage")) {
+          datatableAddEmptyRow("#table-manage", "]] print(i18n("dhcp.no_dhcp_ranges")) print[[");
+        } else {
+          datatableForEachRow("#table-manage", function() {
+            addInputFields($(this));
+
+            datatableAddDeleteButtonCallback.bind(this)(3, "range_to_delete = " + $(this).index() +"; $('#range-to-delete').html(rowIndexToRange('" + $(this).index() + "')); $('#delete_dhcp_range_dialog').modal('show');", "]] print(i18n('delete')) print[[");
+          });
+        }
+
+        aysResetForm('#table-manage-form');
+      }
+    });
+
+  var dhcp_row_id = 0;
+  var input_id = 0;
+
+  function onRowAddUndo() {
+    return true;
+  }
+
+  function addInputField(td, value) {
+    var name = "input_id_" + input_id;
+    input_id++;
+
+    var input = $("<input class='form-control' required>")
+      .attr("name", name)
+      .attr("value", value);
+
+    td.html(input);
+  }
+
+  function addInputFields(row) {
+    var first_ip = row.find("td:eq(0)");
+    var last_ip = row.find("td:eq(1)");
+
+    addInputField(first_ip, first_ip.html());
+    addInputField(last_ip, last_ip.html());
+  }
+
+  function addDhcpRow() {
+    if($("#addRangeBtn").attr("disabled"))
+      return;
+
+    var newid = "dhcp_row_" + dhcp_row_id;
+    dhcp_row_id++;
+
+    if(datatableIsEmpty("#table-manage"))
+      datatableRemoveEmptyRow("#table-manage");
+
+    var tr = $('<tr id="'+ newid +'"><td></td><td></td><td class="text-center"></td></tr>');
+    addInputFields(tr);
+
+    datatableAddDeleteButtonCallback.bind(tr)(3, "datatableUndoAddRow('#" + newid + "', ']] print(i18n("host_pools.no_pools_defined")) print[[', '#addRangeBtn', 'onRowAddUndo')", "]] print(i18n('undo')) print[[");
+    $("#table-manage table").append(tr);
+    $("input:first", tr).focus();
+
+    aysRecheckForm("#table-manage-form");
+  }
+
+  function rowToRange(row) {
+    var first_ip = row.find("td:eq(0) input").val();
+    var last_ip = row.find("td:eq(1) input").val();
+
+    return first_ip + "-" + last_ip;
+  }
+
+  function rowIndexToRange(row_idx) {
+    var row = $("#table-manage tr:eq(" + (parseInt(row_idx)+1) +")");
+    return rowToRange(row);
+  }
+
+  function deleteDhcpRange() {
+    var row = $("#table-manage tr:eq(" + (parseInt(range_to_delete)+1) +")");
+    row.attr("data-skip", "true");
+
+    submitDhcpRanges();
+  }
+
+  function submitDhcpRanges() {
+    var form = $("#table-manage-form");
+    var dhcp_ranges = [];
+
+    datatableForEachRow("#table-manage", function() {
+      var row = $(this);
+
+      if(!row.attr("data-skip"))
+        dhcp_ranges.push(rowToRange(row));
+    });
+
+    var params = {};
+    params.dhcp_ranges = dhcp_ranges.join(",");
+    params.csrf = "]] print(ntop.getRandomCSRFValue()) print[[";
+    paramsToForm('<form method="post"></form>', params).appendTo('body').submit();
+  }
+
+  aysHandleForm("#table-manage-form", {
+    handle_datatable: true,
+    ays_options: {addRemoveFieldsMarksDirty: true}
+  });
+
+  $("#table-manage-form").submit(function(event) {
+    if (event.isDefaultPrevented())
+      return false;
+
+    submitDhcpRanges();
+
+    return false;
+  });
+</script>
+
+]] print(i18n("notes")) print[[
+  <ul>
+    <li>]] print(i18n("dhcp.dhcp_configuration_note")) print[[.</li>
+  </ul>
+]]