tag: Type 4: Extend tag structure to store Type 4 file ID

Extend the Type 4 tag-specific section of the tag structure to hold
the File ID from the 'NDEF File Control TLV' portion of the Capability
Container file.  Also provide accessor functions to get & set the its
value.

2 files changed, 19 insertions, 0 deletions

diff --git a/include/tag.h b/include/tag.h
index c734d7a..5332027 100644
--- a/include/tag.h
+++ b/include/tag.h
@@ -110,6 +110,8 @@ void near_tag_set_c_apdu_max_size(struct near_tag *tag, uint16_t size);
 uint16_t near_tag_get_c_apdu_max_size(struct near_tag *tag);
 void near_tag_set_r_apdu_max_size(struct near_tag *tag, uint16_t size);
 uint16_t near_tag_get_r_apdu_max_size(struct near_tag *tag);
+void near_tag_set_file_id(struct near_tag *tag, uint16_t file_id);
+uint16_t near_tag_get_file_id(struct near_tag *tag);
 void near_tag_set_idm(struct near_tag *tag, uint8_t *idm, uint8_t len);
 uint8_t *near_tag_get_idm(struct near_tag *tag, uint8_t *len);
 void near_tag_set_attr_block(struct near_tag *tag, uint8_t *attr, uint8_t len);
diff --git a/src/tag.c b/src/tag.c
index e1594dc..cb71e56 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -73,6 +73,7 @@ struct near_tag {
 		uint16_t max_ndef_size;
 		uint16_t c_apdu_max_size;
 		uint16_t r_apdu_max_size;
+		uint16_t file_id;
 	} t4;
 
 	struct {
@@ -978,6 +979,22 @@ uint16_t near_tag_get_r_apdu_max_size(struct near_tag *tag)
 	return tag->t4.r_apdu_max_size;
 }
 
+void near_tag_set_file_id(struct near_tag *tag, uint16_t file_id)
+{
+	if (!tag)
+		return;
+
+	tag->t4.file_id = file_id;
+}
+
+uint16_t near_tag_get_file_id(struct near_tag *tag)
+{
+	if (!tag)
+		return 0;
+
+	return tag->t4.file_id;
+}
+
 void near_tag_set_idm(struct near_tag *tag, uint8_t *idm, uint8_t len)
 {
 	if (!tag || len > TYPE3_IDM_LEN)