Validate parsed int pair arguments for positivity

src/option_parser.cc

@@ -1,37 +1,3 @@
-// rTorrent - BitTorrent client
-// Copyright (C) 2005-2011, Jari Sundell
-//
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 2 of the License, or
-// (at your option) any later version.
-// 
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-// 
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-//
-// In addition, as a special exception, the copyright holders give
-// permission to link the code of portions of this program with the
-// OpenSSL library under certain conditions as described in each
-// individual source file, and distribute linked combinations
-// including the two.
-//
-// You must obey the GNU General Public License in all respects for
-// all of the code used other than OpenSSL.  If you modify file(s)
-// with this exception, you may extend this exception to your version
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-// program, then also delete it here.
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-// Contact:  Jari Sundell <sundell.software@gmail.com>
-
-
 #include "config.h"
 
 #include <algorithm>
@@ -140,5 +106,8 @@ OptionParser::call_int_pair(slot_int_pair slot, const std::string& arg) {
   if (std::sscanf(arg.c_str(), "%d-%d", &a, &b) != 2)
     throw std::runtime_error("Invalid argument, \"" + arg + "\" should be \"a-b\"");
 
+  if (a < 0 || b < 0)
+    throw std::runtime_error("Invalid argument, \"" + arg + "\" should be positive numbers");
+  
   slot(a, b);
 }