From 5efbc48dd88d5379f2903f82872d878dd31b327b Mon Sep 17 00:00:00 2001
From: Arnaud Giersch <arnaud.giersch@iut-bm.univ-fcomte.fr>
Date: Mon, 14 Feb 2011 11:52:36 +0100
Subject: [PATCH 1/1] Be more picky when parsing options.

---
 options.cpp | 46 ++++++++++++++++++++++++++++++++++++----------
 1 file changed, 36 insertions(+), 10 deletions(-)

diff --git a/options.cpp b/options.cpp
index f3e2be3..cf9bb0f 100644
--- a/options.cpp
+++ b/options.cpp
@@ -93,6 +93,8 @@ namespace {
     // local helper class
     class opt_helper {
     public:
+        template <typename T>
+        static bool parse_arg(char opt, const char *arg, T& val);
         static const char* on_off(bool b);
         const char* descr(const char* str);
         template <typename T>
@@ -109,6 +111,16 @@ namespace {
 
 } // namespace
 
+template <typename T>
+bool opt_helper::parse_arg(char opt, const char *arg, T& val)
+{
+    std::istringstream str(arg);
+    bool result = (str >> val) && str.eof();
+    if (!result)
+        XBT_ERROR("invalid argument for option '-%c' -- \"%s\"", opt, arg);
+    return result;
+}
+
 const char* opt_helper::on_off(bool b)
 {
     return b ? "on" : "off";
@@ -178,6 +190,8 @@ bool opt::parse_args(int* argc, char* argv[])
 
     opt::program_name = argv[0];
     opt::program_name.erase(0, 1 + opt::program_name.find_last_of('/'));
+
+#define PARSE_ARG(x) result = opt_helper::parse_arg(c, optarg, (x)) && result
     
     int c;
     opterr = 0;
@@ -200,34 +214,44 @@ bool opt::parse_args(int* argc, char* argv[])
             opt::help_requested++;
             break;
         case 'c':
-            opt::comp_cost = cost_func(optarg);
+            try {
+                opt::comp_cost = cost_func(optarg);
+            } catch (...) {
+                XBT_ERROR("invalid argument for option '-%c' -- \"%s\"", c, optarg);
+                result = false;
+            }
             break;
         case 'C':
-            opt::comm_cost = cost_func(optarg);
+            try {
+                opt::comm_cost = cost_func(optarg);
+            } catch (...) {
+                XBT_ERROR("invalid argument for option '-%c' -- \"%s\"", c, optarg);
+                result = false;
+            }
             break;
         case 'i':
-            std::istringstream(optarg) >> opt::lb_maxiter;
+            PARSE_ARG(opt::lb_maxiter);
             break;
         case 'I':
-            std::istringstream(optarg) >> opt::comp_maxiter;
+            PARSE_ARG(opt::comp_maxiter);
             break;
         case 'l':
-            std::istringstream(optarg) >> opt::log_rate;
+            PARSE_ARG(opt::log_rate);
             break;
         case 'L':
-            std::istringstream(optarg) >> opt::auto_depl::load;
+            PARSE_ARG(opt::auto_depl::load);
             break;
         case 'N':
-            std::istringstream(optarg) >> opt::auto_depl::nhosts;
+            PARSE_ARG(opt::auto_depl::nhosts);
             break;
         case 's':
-            std::istringstream(optarg) >> opt::min_lb_iter_duration;
+            PARSE_ARG(opt::min_lb_iter_duration);
             break;
         case 'S':
-            std::istringstream(optarg) >> opt::min_comp_iter_duration;
+            PARSE_ARG(opt::min_comp_iter_duration);
             break;
         case 't':
-            std::istringstream(optarg) >> opt::time_limit;
+            PARSE_ARG(opt::time_limit);
             break;
         case 'T':
             opt::auto_depl::topology = optarg;
@@ -249,6 +273,8 @@ bool opt::parse_args(int* argc, char* argv[])
         }
     }
 
+#undef PARSE_ARG
+
     if (opt::version_requested || opt::help_requested)
         return 1;
 
-- 
2.39.5