Land #7069, modify check codes in multiple local exploits

modules/exploits/windows/local/bthpan.rb

@@ -145,7 +145,7 @@ def exploit
       fail_with(Failure::None, 'Session is already elevated')
     end
 
-    unless check == Exploit::CheckCode::Vulnerable
+    if check == Exploit::CheckCode::Safe
       fail_with(Failure::NotVulnerable, "Exploit not available on this system")
     end
 

modules/exploits/windows/local/mqac_write.rb

@@ -115,7 +115,9 @@ def exploit
 
     # Running on Windows XP versions that aren't listed in the supported list
     # results in a BSOD and so we should not let that happen.
-    return unless check == Exploit::CheckCode::Appears
+    if check == Exploit::CheckCode::Safe
+      fail_with(Failure::NotVulnerable, "Exploit not available on this system")
+    end
 
     base_addr = 0xffff
     handle = open_device('\\\\.\\MQAC', 'FILE_SHARE_WRITE|FILE_SHARE_READ', 0, 'OPEN_EXISTING')

modules/exploits/windows/local/ms13_053_schlamperei.rb

@@ -64,7 +64,7 @@ def initialize(info={})
   def check
     os = sysinfo["OS"]
     unless (os =~ /windows/i)
-      return Exploit::CheckCode::Unknown
+      return Exploit::CheckCode::Safe
     end
 
     file_path = expand_path("%windir%") << "\\system32\\win32k.sys"
@@ -81,7 +81,7 @@ def check
         return Exploit::CheckCode::Appears if revision < 22348
       end
     end
-    return Exploit::CheckCode::Unknown
+    return Exploit::CheckCode::Safe
   end
 
 
@@ -96,7 +96,7 @@ def exploit
       fail_with(Failure::NoTarget, "Running against 64-bit systems is not supported")
     end
 
-    unless check == Exploit::CheckCode::Vulnerable
+    if check == Exploit::CheckCode::Safe
       fail_with(Failure::NotVulnerable, "Exploit not available on this system")
     end
 

modules/exploits/windows/local/ms14_070_tcpip_ioctl.rb

@@ -99,7 +99,7 @@ def exploit
       fail_with(Failure::NoTarget, "Running against 64-bit systems is not supported")
     end
 
-    unless check == Exploit::CheckCode::Vulnerable
+    if check == Exploit::CheckCode::Safe
       fail_with(Failure::NotVulnerable, "Exploit not available on this system")
     end
 

modules/exploits/windows/local/virtual_box_guest_additions.rb

@@ -138,7 +138,7 @@ def exploit
       fail_with(Failure::NoTarget, "Running against 64-bit systems is not supported")
     end
 
-    unless check == Exploit::CheckCode::Vulnerable
+    if check == Exploit::CheckCode::Safe
       fail_with(Failure::NotVulnerable, "Exploit not available on this system")
     end