Fix possible bufferoverflows

[lcr.git] / callerid.c

diff --git a/callerid.c b/callerid.c
index b9e59ab..a60c451 100644 (file)
--- a/callerid.c
+++ b/callerid.c
@@ -45,14 +45,14 @@ const char *numberrize_callerinfo(const char *string, int ntype, const char *nat
        {
                case INFO_NTYPE_INTERNATIONAL:
                strcpy(result, international);
-               strncat(result, string, sizeof(result));
+               strncat(result, string, sizeof(result)-strlen(result)-1);
                result[sizeof(result)-1] = '\0';
                return(result);
                break;
 
                case INFO_NTYPE_NATIONAL:
                strcpy(result, national);
-               strncat(result, string, sizeof(result));
+               strncat(result, string, sizeof(result)-strlen(result)-1);
                result[sizeof(result)-1] = '\0';
                return(result);
                break;