1 files changed, 10 insertions, 0 deletions

diff --git a/plugins/check_cluster.c b/plugins/check_cluster.c
index b86e501d..e1ede9f7 100644
--- a/plugins/check_cluster.c
+++ b/plugins/check_cluster.c
@@ -143,6 +143,7 @@ int main(int argc, char **argv){
 
 int process_arguments(int argc, char **argv){
         int c;
+        char *ptr;
         int option=0;
         static struct option longopts[]={
                 {"data",     required_argument,0,'d'},
@@ -188,6 +189,15 @@ int process_arguments(int argc, char **argv){
 
                 case 'd': /* data values */
                         data_vals=(char *)strdup(optarg);
+                        /* validate data */
+                        for (ptr=data_vals;ptr!=NULL;ptr+=2){
+                                if (ptr[0]<'0' || ptr[0]>'3')
+                                        return ERROR;
+                                if (ptr[1]=='\0')
+                                        break;
+                                if (ptr[1]!=',')
+                                        return ERROR;
+                        }
                         break;
 
                 case 'l': /* text label */