Stringify various EMV fields

* Log Format; field 9F4F
* Biometric Try Counters Template; field BF4C
* Preferred Attempts Template; field BF4D

Author: leonlynch

src/emv_strings.c

@@ -1141,6 +1141,15 @@ int emv_tlv_get_info(
 			info->format = EMV_FORMAT_ANS;
 			return emv_tlv_value_get_string(tlv, info->format, 0, value_str, value_str_len);
 
+		case EMV_TAG_9F4F_LOG_FORMAT:
+			info->tag_name = "Log Format";
+			info->tag_desc =
+				"List (in tag and length format) of data objects representing "
+				"the logged data elements that are passed to the terminal when "
+				"a transaction log record is read";
+			info->format = EMV_FORMAT_DOL;
+			return 0;
+
 		case 0x9F5D: // Used for different purposes by different kernels
 			if (tlv->tag == MASTERCARD_TAG_9F5D_APPLICATION_CAPABILITIES_INFORMATION && // Helps IDE find this case statement
 				tlv->length == 3
@@ -1442,6 +1451,21 @@ int emv_tlv_get_info(
 			info->format = EMV_FORMAT_VAR;
 			return 0;
 
+		case EMV_TAG_BF4C_BIOMETRIC_TRY_COUNTERS_TEMPLATE:
+			info->tag_name = "Biometric Try Counters Template";
+			info->tag_desc =
+				"A template that contains one or more Biometric Try Counters";
+			info->format = EMV_FORMAT_VAR;
+			return 0;
+
+		case EMV_TAG_BF4D_PREFERRED_ATTEMPTS_TEMPLATE:
+			info->tag_name = "Preferred Attempts Template";
+			info->tag_desc =
+				"A template that contains the TLV-coded values for the "
+				"preferred attempts of any BIT of a Biometric Type";
+			info->format = EMV_FORMAT_VAR;
+			return 0;
+
 		default:
 			info->format = EMV_FORMAT_B;
 			return 1;

src/emv_tags.h

@@ -412,6 +412,9 @@ __BEGIN_DECLS
 /// EMV tag 9F4E Merchant Name and Location
 #define EMV_TAG_9F4E_MERCHANT_NAME_AND_LOCATION                 (0x9F4E)
 
+/// EMV tag 9F4F Log Format
+#define EMV_TAG_9F4F_LOG_FORMAT                                 (0x9F4F)
+
 /// Mastercard tag 9F5D Application Capabilities Information. Template BF0C.
 /// @remark See EMV Contactless Book C-2 v2.11, Annex A.1.9
 #define MASTERCARD_TAG_9F5D_APPLICATION_CAPABILITIES_INFORMATION (0x9F5D)
@@ -487,6 +490,12 @@ __BEGIN_DECLS
 /// EMV tag BF0C File Control Information (FCI) Issuer Discretionary Data. Template A5.
 #define EMV_TAG_BF0C_FCI_ISSUER_DISCRETIONARY_DATA              (0xBF0C)
 
+/// EMV tag BF4C Biometric Try Counters Template
+#define EMV_TAG_BF4C_BIOMETRIC_TRY_COUNTERS_TEMPLATE            (0xBF4C)
+
+/// EMV tag BF4D Preferred Attempts Template
+#define EMV_TAG_BF4D_PREFERRED_ATTEMPTS_TEMPLATE                (0xBF4D)
+
 __END_DECLS
 
 #endif