From e27446a8f8c470cc7a41cfeec1e6ffe4f23478e0 Mon Sep 17 00:00:00 2001
From: cbdev <cb@cbcdn.com>
Date: Thu, 22 Jun 2023 01:11:31 +0200
Subject: Basic NTAG support

---
 reader.c | 32 ++++++++++++++++++++++++++++----
 1 file changed, 28 insertions(+), 4 deletions(-)

(limited to 'reader.c')

diff --git a/reader.c b/reader.c
index f37ade4..0ca56cf 100644
--- a/reader.c
+++ b/reader.c
@@ -86,6 +86,24 @@ int reader_init(){
 	return reader_init_backend();
 }
 
+static void reader_print_tag(nfc_tag_info_t tag){
+	size_t n = 0;
+	char* type = "UNST";
+	switch(tag.type){
+		case tag_unset: type = "UNST"; break;
+		case tag_unknown: type = "UNKN"; break;
+		case tag_mifare1: type = "MFR1"; break;
+		case tag_ntag: type = "NTAG"; break;
+		case tag_desfire: type = "DESF"; break;
+	}
+
+	printf("[%s", type);
+	for(n = 0; n < tag.uid_length; n++){
+		printf(" %02X", tag.uid[n]);
+	}
+	printf("]");
+}
+
 static void reader_expire(){
 	size_t n = 0;
 	for(n = 0; n < MAX_TAGS; n++){
@@ -101,16 +119,22 @@ static int reader_process(){
 				//new tag
 				tags[n].flags |= FLAG_ACTIVE;
 				if(tags[n].flags & FLAG_TAG_LOCKED){
-					printf("A tag was detected (slot %lu), but no key is known\n", n);
+					printf("Slot %2lu: ", n);
+					reader_print_tag(tags[n].info);
+					printf(" locked, unusable\n");
 					return 0;
 				}
 				if(tags[n].flags & FLAG_TAG_UNPROGRAMMED){
-					printf("Unprogrammed tag detected (slot %lu)\n", n);
+					printf("Slot %2lu: ", n);
+					reader_print_tag(tags[n].info);
+					printf(" unprogrammed\n");
 					//TODO
 					return 0;
 				}
 				if(tags[n].flags & FLAG_TAG_DATA_VALID){
-					printf("Command tag detected (slot %lu)\n", n);
+					printf("Slot %2lu: ", n);
+					reader_print_tag(tags[n].info);
+					printf(" valid\n");
 					//TODO
 					return 0;
 				}
@@ -136,7 +160,7 @@ int reader_tag_present(uint8_t flags, nfc_tag_info_t tag){
 	size_t n = 0;
 
 	//sanitize input flags
-	flags &= (FLAG_TAG_DATA_VALID | FLAG_TAG_UNPROGRAMMED | FLAG_TAG_LOCKED);
+	flags &= (TAG_STATUS_FLAGS);
 
 	//check if tag already known
 	for(n = 0; n < MAX_TAGS; n++){
-- 
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