add functions to do comprehensive modifications of last purchase or recharge

1 files changed, 19 insertions, 3 deletions

diff --git a/easytool/easycard.h b/easytool/easycard.h
index 37caf1f..8979524 100644
--- a/easytool/easycard.h
+++ b/easytool/easycard.h
@@ -1,6 +1,8 @@
 #ifndef EASYCARD_H
 #define EASYCARD_H
 
+#include <nfc/nfc-types.h>
+#include <nfc/mifaretag.h>
 #include "utils.h"
 
 #define EASY_TT_MRT_ENTER	0x00
@@ -52,17 +54,31 @@ struct easy_log_rec {
 	uint8_t unknown3[2];
 } __attribute__ ((packed));
 
+/* functions for data format conversion */
+
 time_t easy_timestamp2time(const uint8_t *easy_ts);
 char *easy_asc_timestamp(const uint8_t *timestamp);
 
-/* apply a telta (positive or negative) to a EasyCard log record */
+/* functions to make a change to individual portions of the card */
+
+/* apply a delta (positive or negative) to a EasyCard log record */
 int easy_update_log_rec(struct easy_log_rec *elr, int16_t delta);
 /* apply a delta to the 'sum of day' record in Sector 15 Block 2 */
 int easy_update_sum_of_day(struct easy_sect15blk2 *s15b2, int16_t delta);
 
-void easy_dump_log_rec(const struct easy_log_rec *elr);
+/* functions to make a comprehensive change, leave all card state in
+ * a consistent state */
 
-typedef mifare_tag;
+/* positive value: make it more expensive.  negative: cheaper */
+int easy_alter_last_purchase(mifare_tag *mft, int16_t delta);
+/* positive value: make it more expensive.  negative: cheaper */
+int easy_alter_last_recharge(mifare_tag *mft, int16_t delta);
+
+/* functions to dump the transaction log */
+
+/* dump a single log record */
+void easy_dump_log_rec(const struct easy_log_rec *elr);
+/* dump the entire transaction log */
 void easy_dump_log(mifare_tag *mft);
 
 #endif /* EASYCARD_H */