From 5bcb3496fa0409fb7a1dd22e9357a812c3f3f4fe Mon Sep 17 00:00:00 2001
From: merlokk <olegmsn@gmail.com>
Date: Tue, 31 Oct 2017 19:11:23 +0200
Subject: [PATCH 1/1] small refactoring

---
 client/cmdhf14a.c     |  2 +-
 client/emv/apduinfo.c | 13 +++++--------
 client/emv/apduinfo.h |  2 +-
 3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c
index 6d6ea854..aebe2463 100644
--- a/client/cmdhf14a.c
+++ b/client/cmdhf14a.c
@@ -618,7 +618,7 @@ int CmdHF14AAPDU(const char *cmd) {
 		PrintAndLog("Usage: hf 14a apdu [-s] [-k] [-t] <APDU (hex)>");
 		PrintAndLog("       -s    activate field and select card");
 		PrintAndLog("       -k    leave the signal field ON after receive response");
-		PrintAndLog("       -t    executes TLV decoder if it possible");
+		PrintAndLog("       -t    executes TLV decoder if it possible. TODO!!!!");
 		return 0;
 	}
 
diff --git a/client/emv/apduinfo.c b/client/emv/apduinfo.c
index e2e51d9d..d73c24fc 100644
--- a/client/emv/apduinfo.c
+++ b/client/emv/apduinfo.c
@@ -257,6 +257,7 @@ const APDUCode APDUCodeTable[] = {
 	{"9FXX", 	APDUCODE_TYPE_NONE, 		"Command successfully executed; 'xx' bytes of data are available and can be requested using GET RESPONSE."},
 	{"9xXX", 	APDUCODE_TYPE_NONE, 		"Application related status, (ISO 7816-3)"}
 };
+const size_t APDUCodeTableLen = sizeof(APDUCodeTable)/sizeof(APDUCode);
 
 int CodeCmp(const char *code1, const char *code2) {
 	int xsymb = 0;
@@ -276,15 +277,13 @@ int CodeCmp(const char *code1, const char *code2) {
 	return -1;
 }
 
-APDUCode *GetAPDUCode(uint8_t sw1, uint8_t sw2) {
+const APDUCode* const GetAPDUCode(uint8_t sw1, uint8_t sw2) {
 	char buf[4] = {0};
 	
 	sprintf(&buf[0], "%02X ", sw1);
 	sprintf(&buf[2], "%02X ", sw2);
 	
-		
-	int tableLen = sizeof(APDUCodeTable)/sizeof(APDUCode);
-	for (int i = 0; i < tableLen; i++) {
+	for (int i = 0; i < APDUCodeTableLen; i++) {
 		if (CodeCmp(APDUCodeTable[i].ID, buf) == 0) { // TODO make not so equal comparation... XXXX - not works...
 			return &APDUCodeTable[i];
 		}
@@ -293,12 +292,10 @@ APDUCode *GetAPDUCode(uint8_t sw1, uint8_t sw2) {
 	return NULL;
 }
 
-const char *GetAPDUCodeDescription(uint8_t sw1, uint8_t sw2) {
-	APDUCode *cd = GetAPDUCode(sw1, sw2);
+const char* GetAPDUCodeDescription(uint8_t sw1, uint8_t sw2) {
+	const APDUCode *cd = GetAPDUCode(sw1, sw2);
 	if (cd)
 		return cd->Description;
 	else
 		return APDUCodeTable[0].Description; //empty string
 }
-
-
diff --git a/client/emv/apduinfo.h b/client/emv/apduinfo.h
index e388ae68..a3fa2049 100644
--- a/client/emv/apduinfo.h
+++ b/client/emv/apduinfo.h
@@ -28,7 +28,7 @@ typedef struct {
 	const char *Description;
 } APDUCode;
 	
-extern APDUCode* GetAPDUCode(uint8_t sw1, uint8_t sw2);
+extern const APDUCode* const GetAPDUCode(uint8_t sw1, uint8_t sw2);
 extern const char* GetAPDUCodeDescription(uint8_t sw1, uint8_t sw2);
 
 #endif
-- 
2.39.5