Fixed unbounded memory growth bug in

environmental variable code that could
have caused long-running OpenVPN sessions
with many TLS renegotiations to incrementally
increase memory usage over time.


git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2981 e7ae566f-a301-0410-adde-c780ea21d3b5

debug/valgrind-suppress

@@ -114,3 +114,17 @@
    Memcheck:Cond
    obj:/lib/ld-2.5.so
 }
+
+{
+   <insert a suppression name here>
+   Memcheck:Leak
+   fun:malloc
+   fun:CRYPTO_malloc
+   fun:sk_new
+   obj:/usr/lib/libssl.so.0.9.8
+   fun:SSL_COMP_get_compression_methods
+   fun:SSL_library_init
+   fun:init_ssl_lib
+   fun:init_static
+   fun:main
+}

doval

@@ -1,2 +1,2 @@
 #!/bin/bash
-valgrind --tool=memcheck --error-limit=no --suppressions=debug/valgrind-suppress --gen-suppressions=all --leak-check=yes --num-callers=32 $*
+valgrind --tool=memcheck --error-limit=no --suppressions=debug/valgrind-suppress --gen-suppressions=all --leak-check=full --show-reachable=yes --num-callers=32 $*

openvpn.c

@@ -130,7 +130,7 @@ main (int argc, char *argv[])
 	  gc_init (&c.gc);
 
 	  /* initialize environmental variable store */
-	  c.es = env_set_create (&c.gc);
+	  c.es = env_set_create (NULL);
 
 #ifdef ENABLE_MANAGEMENT
 	  /* initialize management subsystem */
@@ -233,6 +233,8 @@ main (int argc, char *argv[])
 
   context_gc_free (&c);
 
+  env_set_destroy (c.es);
+
 #ifdef ENABLE_MANAGEMENT
   /* close management interface */
   close_management ();