Tried to throttle things

lib/common/browser.rb

@@ -17,7 +17,8 @@ class Browser
     :proxy_auth,
     :request_timeout,
     :connect_timeout,
-    :cookie
+    :cookie,
+    :throttle
   ]
 
   @@instance = nil
@@ -71,11 +72,13 @@ class Browser
   #
   def browser_defaults
     @max_threads     = 20
-    # 10 minutes, at this time the cache is cleaned before each scan. If this value is set to 0, the cache will be disabled
+    # 10 minutes, at this time the cache is cleaned before each scan.
+    # If this value is set to 0, the cache will be disabled
     @cache_ttl       = 600
     @request_timeout = 60 # 60s
     @connect_timeout = 10 # 10s
     @user_agent      = "WPScan v#{WPSCAN_VERSION} (http://wpscan.org)"
+    @throttle        = 0
   end
 
   #
@@ -86,7 +89,6 @@ class Browser
   #
   # @return [ void ]
   def load_config(config_file = nil)
-
     if File.symlink?(config_file)
       raise '[ERROR] Config file is a symlink.'
     else
@@ -99,7 +101,6 @@ class Browser
         self.send(:"#{option_name}=", data[option_name])
       end
     end
-
   end
 
   # @param [ String ] url
@@ -121,11 +122,8 @@ class Browser
     )
 
     if @proxy
-      params = params.merge(proxy: @proxy)
+      params.merge!(proxy: @proxy)
-
+      params.merge!(proxyauth: @proxy_auth) if @proxy_auth
-      if @proxy_auth
-        params = params.merge(proxyauth: @proxy_auth)
-      end
     end
 
     if @basic_auth
@@ -149,10 +147,10 @@ class Browser
     params.merge!(connecttimeout: @connect_timeout) if @connect_timeout
 
     # Used to enable the cache system if :cache_ttl > 0
-    params.merge!(cache_ttl: @cache_ttl) unless params.has_key?(:cache_ttl)
+    params.merge!(cache_ttl: @cache_ttl) unless params.key?(:cache_ttl)
 
     # Prevent infinite self redirection
-    params.merge!(maxredirs: 3) unless params.has_key?(:maxredirs)
+    params.merge!(maxredirs: 3) unless params.key?(:maxredirs)
 
     # Disable SSL-Certificate checks
     params.merge!(ssl_verifypeer: false)
@@ -180,5 +178,4 @@ class Browser
     end
     params
   end
-
 end

lib/common/browser/options.rb

@@ -4,7 +4,7 @@ class Browser
   module Options
 
     attr_accessor :cache_ttl, :request_timeout, :connect_timeout
-    attr_reader   :basic_auth, :proxy, :proxy_auth
+    attr_reader   :basic_auth, :proxy, :proxy_auth, :throttle
     attr_writer   :user_agent
 
     # Sets the Basic Authentification credentials
@@ -93,6 +93,15 @@ class Browser
       @connect_timeout = timeout.to_i
     end
 
+    # @param [ String, Integer ] throttle
+    def throttle=(throttle)
+      @throttle = throttle.to_i.abs / 1000.0
+    end
+
+    def throttle!
+      sleep @throttle if @throttle > 0
+    end
+
     protected
 
     def invalid_proxy_auth_format
@@ -110,6 +119,5 @@ class Browser
         end
       end
     end
-
   end
 end

lib/wpscan/wpscan_helper.rb

@@ -105,6 +105,7 @@ def help
   puts '--request-timeout <request-timeout> Request Timeout.'
   puts '--connect-timeout <connect-timeout> Connect Timeout.'
   puts '--max-threads     <max-threads>     Maximum Threads.'
+  puts '--throttle        <milliseconds>    Milliseconds to wait before doing another web request. If used, the --max-threads will have no effect and should be assumed to be 1.'
   puts '--help     | -h                     This help screen.'
   puts '--verbose  | -v                     Verbose output.'
   puts '--version                           Output the current version and exit.'
@@ -118,8 +119,14 @@ down                 = 0
 @total_requests_done = 0
 
 Typhoeus.on_complete do |response|
+  next if response.cached?
+
   down += 1 if response.code == 0
   @total_requests_done += 1
 
   fail 'The target seems to be down' if down >= 30
+
+  next unless Browser.instance.throttle > 0
+
+  sleep(Browser.instance.throttle)
 end

lib/wpscan/wpscan_options.rb

@@ -1,7 +1,6 @@
 # encoding: UTF-8
 
 class WpscanOptions
-
   ACCESSOR_OPTIONS = [
     :batch,
     :enumerate_plugins,
@@ -43,7 +42,8 @@ class WpscanOptions
     :request_timeout,
     :connect_timeout,
     :max_threads,
-    :no_banner
+    :no_banner,
+    :throttle
   ]
 
   attr_accessor *ACCESSOR_OPTIONS
@@ -281,7 +281,8 @@ class WpscanOptions
       ['--no-color', GetoptLong::NO_ARGUMENT],
       ['--cookie', GetoptLong::REQUIRED_ARGUMENT],
       ['--log', GetoptLong::NO_ARGUMENT],
-      ['--no-banner', GetoptLong::NO_ARGUMENT]
+      ['--no-banner', GetoptLong::NO_ARGUMENT],
+      ['--throttle', GetoptLong::REQUIRED_ARGUMENT]
     )
   end