Fix #4736: Display network prefix length (if present) in API key IP whitelist.

app/logical/danbooru/ip_address.rb

@@ -0,0 +1,23 @@
+# A wrapper around the IPAddress gem that adds some extra utility methods.
+#
+# https://github.com/ipaddress-gem/ipaddress
+
+module Danbooru
+  class IpAddress
+    attr_reader :ip_address
+    delegate_missing_to :ip_address
+
+    def initialize(string)
+      @ip_address = ::IPAddress.parse(string)
+    end
+
+    # "1.2.3.4/24" if the address is a subnet, "1.2.3.4" otherwise.
+    def to_s
+      ip_address.size > 1 ? ip_address.to_string : ip_address.to_s
+    end
+
+    def inspect
+      "#<Danbooru::IpAddress #{to_s}>"
+    end
+  end
+end

app/logical/ip_address_type.rb

@@ -1,9 +1,14 @@
+# See also config/initializers/types.rb
+
+require "active_record/connection_adapters/postgresql_adapter"
+
 class IpAddressType < ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Inet
   def cast(value)
-    super(IPAddress.parse(value))
+    return nil if value.blank?
+    super(Danbooru::IpAddress.new(value))
   end
 
   def serialize(value)
-    value.to_string
+    value&.to_string
   end
 end

app/models/api_key.rb

@@ -1,4 +1,7 @@
 class ApiKey < ApplicationRecord
+  attribute :permitted_ip_addresses, :ip_address, array: true
+  attribute :last_ip_address, :ip_address
+
   array_attribute :permissions
   array_attribute :permitted_ip_addresses
 

app/models/ip_address.rb

@@ -1,7 +1,7 @@
 class IpAddress < ApplicationRecord
   belongs_to :model, polymorphic: true
   belongs_to :user
-  attribute :ip_addr, IpAddressType.new
+  attribute :ip_addr, :ip_address
 
   def self.model_types
     %w[Post User Comment Dmail ArtistVersion ArtistCommentaryVersion NoteVersion WikiPageVersion]
@@ -41,8 +41,7 @@ class IpAddress < ApplicationRecord
   end
 
   def to_s
-    # include the subnet mask only when the IP denotes a subnet.
-    (ip_addr.size > 1) ? ip_addr.to_string : ip_addr.to_s
+    ip_addr.to_s
   end
 
   def readonly?

app/views/api_keys/_form.html.erb

@@ -1,6 +1,6 @@
 <%= edit_form_for(api_key, html: { class: "stacked-hints" }) do |f| %>
   <%= f.input :name, as: :string, hint: "An optional name to help you remember what this key is for." %>
-  <%= f.input :permitted_ip_addresses, label: "IP Addresses", as: :string, hint: "An optional list of IPs allowed to use this key. Leave blank to allow all IPs." %>
-  <%= f.input :permissions, as: :select, collection: ApiKey.permissions_list, hint: "An optional list of API endpoints this key can use. Ctrl+click to select multiple endpoints. Leave blank to allow all API endpoints.", input_html: { multiple: true } %>
+  <%= f.input :permitted_ip_addresses, label: "IP Addresses", as: :string, hint: "An optional list of IPs allowed to use this key. Space separated, subnets allowed. Leave blank to allow all IPs." %>
+  <%= f.input :permissions, as: :select, collection: ApiKey.permissions_list, hint: "An optional list of API endpoints this key is allowed to use. Ctrl+click to select multiple endpoints. Leave blank to allow all API endpoints.", input_html: { multiple: true } %>
   <%= f.submit "Create" %>
 <% end %>