catch underflow/overflow errors

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@24836 ec53bebd-3082-4978-b11e-865c3cabbd6b

diff --git a/lib/krb5/verify_krb5_conf.c b/lib/krb5/verify_krb5_conf.c
index 3e21bb7d5bdb26dbabe3486204aa1aa2d069158c..9a5bb01d24f4b5cc0d87078a9ebac1b5467c49ce 100644 (file)
--- a/lib/krb5/verify_krb5_conf.c
+++ b/lib/krb5/verify_krb5_conf.c
@@ -88,9 +88,15 @@ check_time(krb5_context context, const char *path, char *data)
 static int
 check_numeric(krb5_context context, const char *path, char *data)
 {
-    long int v;
+    long v;
     char *end;
     v = strtol(data, &end, 0);
+
+    if ((v == LONG_MIN || v == LONG_MAX) && errno != 0) {
+       krb5_warnx(context, "%s: over/under flow for \"%s\"",
+                  path, data);
+       return 1;
+    }
     if(*end != '\0') {
        krb5_warnx(context, "%s: failed to parse \"%s\" as a number",
                   path, data);