Fix @wchen-r7's feedback

* use vprint_* on check
* rescue get_once

Author: jvazquez-r7

modules/exploits/multi/misc/hp_data_protector_exec_integutil.rb

@@ -83,9 +83,9 @@ def check
 
     if fingerprint =~ /Data Protector A\.(\d+\.\d+)/
       version = $1
-      print_status("#{peer} - Windows / HP Data Protector version #{version} found")
+      vprint_status("#{peer} - Windows / HP Data Protector version #{version} found")
     elsif fingerprint =~ / INET/
-      print_status("#{peer} - Linux / HP Data Protector found")
+      vprint_status("#{peer} - Linux / HP Data Protector found")
       return Exploit::CheckCode::Detected
     else
       return Exploit::CheckCode::Safe
@@ -151,7 +151,12 @@ def get_fingerprint_linux
     connect
 
     sock.put([2].pack("N") + "\xff\xfe")
-    res = sock.get_once(4)
+    begin
+      res = sock.get_once(4)
+    rescue EOFError
+      disconnect
+      return nil
+    end
 
     if res.nil?
       disconnect
@@ -160,8 +165,13 @@ def get_fingerprint_linux
       length = res.unpack("N")[0]
     end
 
-    res = sock.get_once(length)
-    disconnect
+    begin
+      res = sock.get_once(length)
+    rescue EOFError
+      return nil
+    ensure
+      disconnect
+    end
 
     if res.nil?
       return nil
@@ -176,7 +186,7 @@ def get_fingerprint_windows
     sock.put(rand_text_alpha_upper(64))
     begin
     res = sock.get_once(4)
-    rescue ::Errno::ECONNRESET
+    rescue ::Errno::ECONNRESET, EOFError
       disconnect
       return nil
     end
@@ -188,8 +198,13 @@ def get_fingerprint_windows
       length = res.unpack("N")[0]
     end
 
-    res = sock.get_once(length)
-    disconnect
+    begin
+      res = sock.get_once(length)
+    rescue EOFError
+      return nil
+    ensure
+      disconnect
+    end
 
     if res.nil?
       return nil
@@ -212,7 +227,12 @@ def leak_hp_directory(rand_exec)
     ])
 
     sock.put(pkt)
-    res = sock.get_once(4)
+    begin
+      res = sock.get_once(4)
+    rescue EOFError
+      disconnect
+      return nil
+    end
 
     if res.nil?
       disconnect
@@ -221,8 +241,13 @@ def leak_hp_directory(rand_exec)
       length = res.unpack("N")[0]
     end
 
+    begin
     res = sock.get_once(length)
-    disconnect
+    rescue EOFError
+      return nil
+    ensure
+      disconnect
+    end
 
     if res.nil?
       return nil