Land #4848, remove some reliance on rails libraries from rex

lib/rex/exploitation/js/memory.rb

@@ -27,7 +27,7 @@ class Memory
   def self.heaplib2(custom_js='', opts={})
     js = ::File.read(::File.join(Msf::Config.data_directory, "js", "memory", "heaplib2.js"))
 
-    unless custom_js.blank?
+    unless custom_js.to_s.empty?
       js << custom_js
     end
 

lib/rex/mime/message.rb

@@ -126,7 +126,7 @@ class Message
     header_string = self.header.to_s
 
     msg = header_string.empty? ? '' : force_crlf(self.header.to_s + "\r\n")
-    msg << force_crlf(self.content + "\r\n") unless self.content.blank?
+    msg << force_crlf(self.content + "\r\n") unless self.content.to_s.empty?
 
     self.parts.each do |part|
       msg << force_crlf("--" + self.bound + "\r\n")

lib/rex/parser/appscan_nokogiri.rb

@@ -195,7 +195,7 @@ module Rex
       res_header = Rex::Proto::Http::Packet::Header.new
       req_header.from_s request_headers.lstrip
       res_header.from_s response_headers.lstrip
-      if response_body.blank?
+      if response_body.to_s.empty?
         response_body = ''
       end
       @state[:request_headers] = req_header

lib/rex/parser/fusionvm_nokogiri.rb

@@ -59,7 +59,7 @@ module Parser
     unless in_tag("JobOrder")
       case name
       when "OS"
-        unless @host.nil? or @text.blank?
+        unless @host.nil? or @text.to_s.empty?
           tnote = {
             :type       => "host.os.fusionvm_fingerprint",
             :data       => { :os => @text.strip },
@@ -86,7 +86,7 @@ module Parser
       when "CVE"
         @vuln[:refs] << "CVE-#{@text.strip}"
       when "References"
-        unless @text.blank?
+        unless @text.to_s.empty?
           @text.split(' ').each do |ref|
             next unless ref.start_with? "http"
             if ref =~ /MS\d{2}-\d{3}/

lib/rex/post/meterpreter/client_core.rb

@@ -469,7 +469,7 @@ class ClientCore < Extension
     end
 
     if client.platform =~ /linux/
-      if writable_dir.blank?
+      if writable_dir.to_s.empty?
         writable_dir = tmp_folder
       end
 
@@ -752,7 +752,7 @@ class ClientCore < Extension
   def tmp_folder
     tmp = client.sys.config.getenv('TMPDIR')
 
-    if tmp.blank?
+    if tmp.to_s.empty?
       tmp = '/tmp'
     end
 

lib/rex/post/meterpreter/extensions/extapi/wmi/wmi.rb

@@ -31,7 +31,7 @@ class Wmi
   def query(query, root = nil)
     request = Packet.create_request('extapi_wmi_query')
 
-    request.add_tlv(TLV_TYPE_EXT_WMI_DOMAIN, root) unless root.blank?
+    request.add_tlv(TLV_TYPE_EXT_WMI_DOMAIN, root) unless root.to_s.empty?
     request.add_tlv(TLV_TYPE_EXT_WMI_QUERY, query)
 
     response = client.send_request(request)

lib/rex/post/meterpreter/extensions/stdapi/webcam/webcam.rb

@@ -66,7 +66,7 @@ class Webcam
 
     remote_browser_path = webrtc_browser_path
 
-    if remote_browser_path.blank?
+    if remote_browser_path.to_s.empty?
       fail "Unable to find a suitable browser on the target machine"
     end
 

lib/rex/post/meterpreter/ui/console/command_dispatcher/android.rb

@@ -491,7 +491,7 @@ class Console::CommandDispatcher::Android
       end
     end
 
-    if dest.blank? || body.blank?
+    if dest.to_s.empty? || body.to_s.empty?
       print_error("You must enter both a destination address -d and the SMS text body -t")
       print_error('e.g. send_sms -d +351961234567 -t "GREETINGS PROFESSOR FALKEN."')
       print_line(send_sms_opts.usage)
@@ -543,7 +543,7 @@ class Console::CommandDispatcher::Android
       wlan_list << [mac, ssid, ss.to_s]
     end
 
-    if wlan_list.blank?
+    if wlan_list.to_s.empty?
       print_error("Unable to enumerate wireless networks from the target.  Wireless may not be present or enabled.")
       return
     end

lib/rex/post/meterpreter/ui/console/command_dispatcher/core.rb

@@ -866,7 +866,7 @@ class Console::CommandDispatcher::Core
         end
         pid = val.to_i
       when '-N'
-        if val.blank?
+        if val.to_s.empty?
           print_error("No process name provided")
           return
         end

lib/rex/proto/kademlia/bootstrap_response.rb

@@ -51,14 +51,14 @@ module Kademlia
       bootstrap_peer_id = Rex::Proto::Kademlia.decode_peer_id(message.body.slice!(0, 16))
       bootstrap_tcp_port, bootstrap_version, num_peers = message.body.slice!(0, 5).unpack('vCv')
       # protocol says there are no peers and the body confirms this, so just return with no peers
-      if num_peers == 0 && message.body.blank?
+      if num_peers == 0 && message.body.to_s.empty?
         peers = []
       else
         peers_data = message.body
         # peers data is too long/short, abort
         return if peers_data.size % BOOTSTRAP_PEER_SIZE != 0
         peers = []
-        until peers_data.blank?
+        until peers_data.to_s.empty?
           peer_data = peers_data.slice!(0, BOOTSTRAP_PEER_SIZE)
           peer_id = Rex::Proto::Kademlia.decode_peer_id(peer_data.slice!(0, 16))
           ip, udp_port, tcp_port, version = peer_data.unpack('VvvC')

lib/rex/zip/blocks.rb

@@ -116,7 +116,7 @@ class CentralDir
   end
 
   def pack
-    if @entry.central_dir_name.blank?
+    if @entry.central_dir_name.to_s.empty?
       path = @entry.relative_path
     else
       path = @entry.central_dir_path

lib/rex/zip/entry.rb

@@ -76,7 +76,7 @@ class Entry
   end
 
   def central_dir_path
-    return nil if @central_dir_name.blank?
+    return nil if @central_dir_name.to_s.empty?
     get_relative_path(@central_dir_name)
   end