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-rw-r--r--bin/ykfde.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/bin/ykfde.c b/bin/ykfde.c
index 44ead9a..402ecb7 100644
--- a/bin/ykfde.c
+++ b/bin/ykfde.c
@@ -97,10 +97,22 @@ int main(int argc, char **argv) {
help++;
break;
case 'n':
+ if (new_2nd_factor != NULL) {
+ fprintf(stderr, "We already have a new second factor. Did you specify it twice?\n");
+ rc = EXIT_FAILURE;
+ goto out10;
+ }
+
new_2nd_factor = strdup(optarg);
memset(optarg, '*', strlen(optarg));
break;
case 's':
+ if (payload != NULL) {
+ fprintf(stderr, "We already have a second factor. Did you specify it twice?\n");
+ rc = EXIT_FAILURE;
+ goto out10;
+ }
+
payload = strdup(optarg);
memset(optarg, '*', strlen(optarg));
break;