Fix string validation for configurator

seed/configurator.c

@@ -156,24 +156,24 @@ int set_val(Entry *entry, char *val) {
 	} else if (entry->type == TYPE_STRING) {
 		/* Validation rules. */
 		char *validation = entry->validation;
-		char *prev = validation;
+		char *next;
 		int found = FALSE;
-		if (strcmp(validation, "") == 0) {
-			found = TRUE;
-		}
-		while (prev != NULL) {
-			if (prev[0] == '\0') {
+		while (validation != NULL) {
+			if (validation[0] == '\0') {
 				break;
 			}
-			validation = strchr(validation, '|');
-			if (validation != NULL) {
-				validation[0] = '\0';
-				validation += 1;
-				if (strcmp(prev, val) == 0) {
+			next = strchr(validation, '|');
+			if (next == NULL) {
+				if (strcmp(validation, val) == 0) {
+					found = TRUE;
+				}
+				break;
+			} else {
+				if (strncmp(validation, val, next - validation) == 0) {
 					found = TRUE;
 				}
 			}
-			prev = validation;
+			validation = next + 1;
 		}
 		if (found == FALSE) {
 			fputs("Invalid input: ", stdout);