fix time parsing, add command support

lib/msf/ui/console/command_dispatcher/core.rb

@@ -1548,9 +1548,23 @@ def cmd_sessions(*args)
         print_error("No command specified!")
         return false
       end
+      if search_term
+        matching_sessions = []
+        terms = search_term.split
+        terms.each do |term|
+          matching_session = filter_sessions_by_search(term)
+          matching_sessions << matching_session.to_i if matching_session
+        end
+        if matching_sessions == []
+          print_error("No matching sessions.") 
+          return
+        end
+      end
       cmds.each do |cmd|
         if sid
           sessions = session_list
+        elsif matching_sessions
+          sessions = matching_sessions
         else
           sessions = framework.sessions.keys.sort
         end
@@ -1664,7 +1678,12 @@ def cmd_sessions(*args)
         matching_sessions = []
         terms = search_term.split
         terms.each do |term|
-          matching_sessions << filter_sessions_by_search(term) if filter_sessions_by_search(term)
+          matching_session = filter_sessions_by_search(term)
+          matching_sessions << matching_session if matching_session
+        end
+        if matching_sessions == []
+          print_status("No matching sessions.") 
+          return
         end
       end
       print_status("Killing all sessions...")
@@ -1862,18 +1881,24 @@ def evaluate_search_criteria(session, search_term)
   end
 
   def parse_duration(duration)
-    case duration
-    when /(\d+)d/
-      return $1.to_i * 86400
-    when /(\d+)h/
-      return $1.to_i * 3600
-    when /(\d+)m/
-      return $1.to_i * 60
-    when /(\d+)s/
-      return $1.to_i
-    else
-      return 0
+    total_time = 0
+    time_tokens = duration.scan(/\d+/).zip(duration.scan(/[a-zA-Z]+/))
+    time_tokens.each do |pair|
+      raise "Please specify both time units and amounts" if pair[1].nil?
+      case pair[1]
+      when "d"
+        total_time = total_time + pair[0].to_i * 86400
+      when "h"
+        total_time = total_time + pair[0].to_i * 3600
+      when "m"
+        total_time = total_time + pair[0].to_i * 60
+      when "s"
+        total_time = total_time + pair[0].to_i
+      else
+        raise "Unrecognized time format"
+      end
     end
+    return total_time
   end
 
   #