FEATURE: filter screened IP addresses

app/assets/javascripts/admin/controllers/admin-logs-screened-ip-addresses.js.es6

@@ -3,15 +3,16 @@ import { outputExportResult } from 'discourse/lib/export-result';
 export default Ember.ArrayController.extend(Discourse.Presence, {
   loading: false,
   itemController: 'admin-log-screened-ip-address',
+  filter: null,
 
-  show: function() {
+  show: Discourse.debounce(function() {
     var self = this;
     self.set('loading', true);
-    Discourse.ScreenedIpAddress.findAll().then(function(result) {
+    Discourse.ScreenedIpAddress.findAll(this.get("filter")).then(function(result) {
       self.set('model', result);
       self.set('loading', false);
     });
-  },
+  }, 250).observes("filter"),
 
   actions: {
     recordAdded: function(arg) {

app/assets/javascripts/admin/models/screened_ip_address.js

@@ -45,8 +45,8 @@ Discourse.ScreenedIpAddress = Discourse.Model.extend({
 });
 
 Discourse.ScreenedIpAddress.reopenClass({
-  findAll: function() {
-    return Discourse.ajax("/admin/logs/screened_ip_addresses.json").then(function(screened_ips) {
+  findAll: function(filter) {
+    return Discourse.ajax("/admin/logs/screened_ip_addresses.json", { data: { filter: filter } }).then(function(screened_ips) {
       return screened_ips.map(function(b) {
         return Discourse.ScreenedIpAddress.create(b);
       });

app/assets/javascripts/admin/templates/logs/screened_ip_addresses.hbs

@@ -1,5 +1,6 @@
 <p>{{i18n 'admin.logs.screened_ips.description'}}</p>
 <div class="pull-right">
+  {{text-field value=filter class="ip-address-input" placeholderKey="admin.logs.screened_ips.form.filter" autocorrect="off" autocapitalize="off"}}
   <button class="btn" {{action "rollUp"}} title="{{i18n 'admin.logs.screened_ips.roll_up.title'}}">{{i18n 'admin.logs.screened_ips.roll_up.text'}}</button>
   <button class="btn" {{action "exportScreenedIpList"}} title="{{i18n 'admin.export_csv.button_title.screened_ip'}}">{{fa-icon "download"}}{{i18n 'admin.export_csv.button_text'}}</button>
 </div>

app/controllers/admin/screened_ip_addresses_controller.rb

@@ -1,9 +1,24 @@
+require_dependency 'ip_addr'
+
 class Admin::ScreenedIpAddressesController < Admin::AdminController
 
   before_filter :fetch_screened_ip_address, only: [:update, :destroy]
 
   def index
-    screened_ip_addresses = ScreenedIpAddress.limit(200).order('match_count desc').to_a
+    filter = params[:filter]
+    filter = IPAddr.handle_wildcards(filter)
+
+    screened_ip_addresses = ScreenedIpAddress
+    screened_ip_addresses = screened_ip_addresses.where("cidr '#{filter}' >>= ip_address") if filter.present?
+    screened_ip_addresses = screened_ip_addresses.limit(200).order('match_count desc')
+
+    begin
+      screened_ip_addresses = screened_ip_addresses.to_a
+    rescue ActiveRecord::StatementInvalid
+      # postgresql throws a PG::InvalidTextRepresentation exception when filter isn't a valid cidr expression
+      screened_ip_addresses = []
+    end
+
     render_serialized(screened_ip_addresses, ScreenedIpAddressSerializer)
   end
 

app/models/screened_ip_address.rb

@@ -24,22 +24,19 @@ class ScreenedIpAddress < ActiveRecord::Base
       return
     end
 
-    return write_attribute(:ip_address, val) if val.is_a?(IPAddr)
-
-    num_wildcards = val.count('*')
-    if num_wildcards == 0
+    if val.is_a?(IPAddr)
       write_attribute(:ip_address, val)
-    else
-      v = val.gsub(/\/.*/, '') # strip ranges like "/16" from the end if present
-      if v[v.index('*')..-1] =~ /[^\.\*]/
+      return
+    end
+
+    v = IPAddr.handle_wildcards(val)
+
+    if v.nil?
       self.errors.add(:ip_address, :invalid)
       return
     end
-      parts = v.split('.')
-      (4 - parts.size).times { parts << '*' } # support strings like 192.*
-      v = parts.join('.')
-      write_attribute(:ip_address, "#{v.gsub('*', '0')}/#{32 - (v.count('*') * 8)}")
-    end
+
+    write_attribute(:ip_address, v)
 
   # this gets even messier, Ruby 1.9.2 raised a different exception to Ruby 2.0.0
   # handle both exceptions

config/locales/client.en.yml

@@ -1928,6 +1928,7 @@ en:
             label: "New:"
             ip_address: "IP address"
             add: "Add"
+            filter: "Search"
           roll_up:
             text: "Roll up"
             title: "Creates new subnet ban entries if there are at least 'min_ban_entries_for_roll_up' entries."

lib/ip_addr.rb

@@ -1,5 +1,24 @@
 class IPAddr
 
+  def self.handle_wildcards(val)
+    return if val.blank?
+
+    num_wildcards = val.count('*')
+
+    return val if num_wildcards == 0
+
+    # strip ranges like "/16" from the end if present
+    v = val.gsub(/\/.*/, '')
+
+    return if v[v.index('*')..-1] =~ /[^\.\*]/
+
+    parts = v.split('.')
+    (4 - parts.size).times { parts << '*' } # support strings like 192.*
+    v = parts.join('.')
+
+    "#{v.gsub('*', '0')}/#{32 - (v.count('*') * 8)}"
+  end
+
   def to_cidr_s
     if @addr
       mask = @mask_addr.to_s(2).count('1')

spec/controllers/admin/screened_ip_addresses_controller_spec.rb

@@ -10,10 +10,18 @@ describe Admin::ScreenedIpAddressesController do
 
   describe 'index' do
 
-    it 'returns JSON' do
-      xhr :get, :index
+    it 'filters screened ip addresses' do
+      Fabricate(:screened_ip_address, ip_address: "1.2.3.4")
+      Fabricate(:screened_ip_address, ip_address: "1.2.3.5")
+      Fabricate(:screened_ip_address, ip_address: "1.2.3.6")
+      Fabricate(:screened_ip_address, ip_address: "4.5.6.7")
+
+      xhr :get, :index, filter: "4.*"
+
       expect(response).to be_success
-      expect(JSON.parse(response.body)).to be_a(Array)
+
+      result = JSON.parse(response.body)
+      expect(result.length).to eq(1)
     end
 
   end