Cache what a crop is harvested for (#4582)

Add Rack::Attack rate limiting and Fail2Ban protection

Gemfile

@@ -116,6 +116,8 @@ gem 'xmlrpc' # fixes rake error - can be removed if not needed later
 
 gem 'puma'
 
+gem 'rack-attack'
+
 gem 'loofah', '>= 2.19.1'
 gem 'rack-protection', '>= 2.0.1'
 

Gemfile.lock

@@ -503,6 +503,8 @@ GEM
     query_diet (0.7.3)
     racc (1.8.1)
     rack (2.2.23)
+    rack-attack (6.8.0)
+      rack (>= 1.0, < 4)
     rack-cors (2.0.2)
       rack (>= 2.0.0)
     rack-protection (3.2.0)
@@ -841,6 +843,7 @@ DEPENDENCIES
   pry
   puma
   query_diet
+  rack-attack
   rack-cors
   rack-protection (>= 2.0.1)
   rails (~> 7.2.0)

app/controllers/charts/crops_controller.rb

@@ -14,9 +14,12 @@ module Charts
 
     def harvested_for
       @crop = Crop.find_by!(slug: params[:crop_slug])
-      render json: Harvest.joins(:plant_part)
-        .where(crop: @crop)
-        .group("plant_parts.name").count(:id)
+      data = Rails.cache.fetch("#{@crop.cache_key_with_version}/harvested_for", expires_in: 1.day) do
+        Harvest.joins(:plant_part)
+          .where(crop: @crop)
+          .group("plant_parts.name").count(:id)
+      end
+      render json: data
     end
 
     private

config/application.rb

@@ -73,6 +73,8 @@ module Growstuff
     config.newsletter_list_id = ENV.fetch('GROWSTUFF_MAILCHIMP_NEWSLETTER_ID', nil)
 
     # config.active_record.raise_in_transactional_callbacks = true
+    config.middleware.insert_before 0, Rack::Attack
+
     config.middleware.insert_before 0, Rack::Cors do
       allow do
         origins '*'

config/initializers/rack_attack.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+class Rack::Attack
+  ### Throttle Config ###
+
+  if Rails.env.production?
+    # Throttle requests to /plantings, /harvests, and /members to 10 per minute per IP
+    # Includes API routes
+    throttle('req/ip/restricted_routes', limit: 20, period: 1.minute) do |req|
+      if req.path =~ %r{^/(plantings|harvests|members)(/|$)} || req.path =~ %r{^/api/v1/(plantings|harvests|members)(/|$)}
+        req.ip
+      end
+    end
+
+    ### Fail2Ban Config ###
+
+    # Block IPs that make too many requests to suspicious paths
+    # After 5 "bad" requests in 10 minutes, block the IP for 1 hour
+    blocklist('fail2ban/pentesters') do |req|
+      Fail2Ban.filter("pentesters-#{req.ip}", maxretry: 5, findtime: 10.minutes, bantime: 1.hour) do
+        # The count for the IP is incremented if the return value is truthy.
+        req.path.include?('wp-admin') ||
+          req.path.include?('wp-login') ||
+          req.path.include?('cgi-bin') ||
+          req.path.end_with?('.php', '.asp', '.aspx', '.jsp', '.exe', '.env', '.git')
+      end
+    end
+  end
+
+  ### Custom Response Headers ###
+
+  # Add Retry-After header to throttled responses
+  self.throttled_response_retry_after_header = true
+end