Prevent user from using --helper multiple times (Nicolas Bouliane <nib@cookinglinux...

diff --git a/extensions/libipt_helper.c b/extensions/libipt_helper.c
index 52047e484caef1fdd97f005d88227c873bb9e822..10b39d74423ae6e7781f103b61e0eb90b801e0c7 100644 (file)
--- a/extensions/libipt_helper.c
+++ b/extensions/libipt_helper.c
@@ -44,6 +44,9 @@ parse(int c, char **argv, int invert, unsigned int *flags,
 
        switch (c) {
        case '1':
+               if (*flags)
+                       exit_error(PARAMETER_PROBLEM,
+                                       "helper match: Only use --helper ONCE!");
                check_inverse(optarg, &invert, &invert, 0);
                strncpy(info->name, optarg, 29);
                info->name[29] = '\0';