add support for boolean datatypes on mssql

lib/rex/proto/mssql/client_mixin.rb

@@ -178,6 +178,14 @@ def mssql_parse_tds_reply(data, info)
         col[:id] = :int
         col[:int_size] = data.slice!(0, 1).unpack('C')[0]
 
+      when 50
+        col[:id] = :sybbit
+        # col[:int_size] = data.slice!(0, 1).unpack('C')[0]
+
+      when 104
+        col[:id] = :bitntype
+        col[:int_size] = data.slice!(0, 1).unpack('C')[0]
+
       when 127
         col[:id] = :bigint
 
@@ -292,6 +300,17 @@ def mssql_parse_tds_row(data, info)
       when :tinyint
         row << data.slice!(0, 1).unpack("C")[0]
 
+      when :bitntype
+        has_value = data.slice!(0, 1).unpack("C")[0]
+        if has_value == 0
+          row << 'NULL'
+        else
+          row << data.slice!(0, 1).unpack("C")[0]
+        end
+
+      when :sybbit
+        row << data.slice!(0, 1).unpack("C")[0]
+
       when :image
         str = ''
         len = data.slice!(0, 1).unpack('C')[0]
@@ -322,7 +341,6 @@ def mssql_parse_tds_row(data, info)
         info[:errors] << "unknown column type: #{col.inspect}"
       end
     end
-
     info[:rows] << row
     info
   end