There must be read_file

modules/post/osx/gather/safari_lastsession.rb

@@ -42,7 +42,7 @@ class Metasploit3 < Msf::Post
 
     f = read_file("/Applications/Safari.app/Contents/version.plist")
     xml = REXML::Document.new(f) rescue nil
-    return version if xml.root.nil?
+    return version if xml.nil?
 
     xml.elements['plist/dict'].each_element do |e|
       if e.text == 'CFBundleShortVersionString'
@@ -66,7 +66,7 @@ class Metasploit3 < Msf::Post
   #
   def plutil(filename)
     cmd_exec("plutil -convert xml1 #{filename}")
-    cmd_exec("cat #{filename}")
+    read_file(filename)
   end
 
 
@@ -76,7 +76,7 @@ class Metasploit3 < Msf::Post
   #
   def get_lastsession
     print_status("#{peer} - Looking for LastSession.plist")
-    plutil("~/Library/Safari/LastSession.plist")
+    plutil("#{expand_path("~")}/Library/Safari/LastSession.plist")
   end
 
 
@@ -89,7 +89,7 @@ class Metasploit3 < Msf::Post
     session_dict = nil
 
     xml = REXML::Document.new(lastsession) rescue nil
-    return nil if xml.root.nil?
+    return nil if xml.nil?
 
     xml.elements['plist'].each_element do |e|
       found = false