From 632f9866e6add98c70222b2c9f157ecc42c6629e Mon Sep 17 00:00:00 2001
From: Joel <sauskethunderkid@gmail.com>
Date: Sat, 28 Oct 2017 04:12:16 -0500
Subject: [PATCH] Add a few more CFGI functions (#380)

* CFGI_SecureInfoGetSerialNumber
* CFGU_IsNFCSupported (IsFangateSupported)
* CFGI_GetLocalFriendCodeSeed
* CFGI_GetLocalFriendCodeSeedData
---
 libctru/include/3ds/services/cfgu.h | 24 ++++++++++++
 libctru/source/services/cfgu.c      | 58 +++++++++++++++++++++++++++++
 2 files changed, 82 insertions(+)

diff --git a/libctru/include/3ds/services/cfgu.h b/libctru/include/3ds/services/cfgu.h
index 926e005..d8db9dd 100644
--- a/libctru/include/3ds/services/cfgu.h
+++ b/libctru/include/3ds/services/cfgu.h
@@ -84,6 +84,12 @@ Result CFGU_GetCountryCodeString(u16 code, u16* string);
  */
 Result CFGU_GetCountryCodeID(u16 string, u16* code);
 
+/**
+ * @brief Checks if NFC (code name: fangate) is supported.
+ * @param isSupported pointer to the output the result to.
+ */
+Result CFGU_IsNFCSupported(bool* isSupported);
+
 /**
  * @brief Gets a config info block with flags = 2.
  * @param size Size of the data to retrieve.
@@ -170,3 +176,21 @@ Result CFGI_VerifySigLocalFriendCodeSeed(void);
  * @brief Verifies the RSA signature for the SecureInfo data already stored in memory.
  */
 Result CFGI_VerifySigSecureInfo(void);
+
+/**
+ * @brief Gets the system's serial number.
+ * @param serial Pointer to output the serial to. (This is normally 0xF)
+ */
+Result CFGI_SecureInfoGetSerialNumber(u8 *serial);
+
+/**
+ * @brief Gets the 0x110-byte buffer containing the data for the LocalFriendCodeSeed.
+ * @param data Pointer to output the buffer. (The size must be at least 0x110-bytes)
+ */
+Result CFGI_GetLocalFriendCodeSeedData(u8 *data);
+
+/**
+ * @brief Gets the 64-bit local friend code seed.
+ * @param seed Pointer to write the friend code seed to.
+ */
+Result CFGI_GetLocalFriendCodeSeed(u64* seed);
diff --git a/libctru/source/services/cfgu.c b/libctru/source/services/cfgu.c
index 48ea174..cc960bc 100644
--- a/libctru/source/services/cfgu.c
+++ b/libctru/source/services/cfgu.c
@@ -133,6 +133,20 @@ Result CFGU_GetCountryCodeID(u16 string, u16* code)
 	return (Result)cmdbuf[1];
 }
 
+Result CFGU_IsNFCSupported(bool* isSupported)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0xB,0,0); // 0x000B0000
+
+	if(R_FAILED(ret = svcSendSyncRequest(cfguHandle)))return ret;
+
+	*isSupported = cmdbuf[2] & 0xFF;
+
+	return (Result)cmdbuf[1];
+}
+
 // See here for block IDs:
 // http://3dbrew.org/wiki/Config_Savegame#Configuration_blocks
 Result CFGU_GetConfigInfoBlk2(u32 size, u32 blkID, u8* outData)
@@ -315,3 +329,47 @@ Result CFGI_VerifySigSecureInfo(void)
 
 	return (Result)cmdbuf[1];
 }
+
+Result CFGI_SecureInfoGetSerialNumber(u8 *serial)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x408,1,2); // 0x4080042
+	cmdbuf[1] = 0xF;
+	cmdbuf[2] = IPC_Desc_Buffer(0xF, IPC_BUFFER_W);
+	cmdbuf[3] = (u32)serial;
+
+	if(R_FAILED(ret = svcSendSyncRequest(cfguHandle)))return ret;
+
+	return (Result)cmdbuf[1];
+}
+
+Result CFGI_GetLocalFriendCodeSeedData(u8 *data)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x404,1,2); // 0x4040042
+	cmdbuf[1] = (u32)0x110;
+	cmdbuf[2] = IPC_Desc_Buffer((u32)0x110, IPC_BUFFER_W);
+	cmdbuf[3] = (u32)data;
+
+	if(R_FAILED(ret = svcSendSyncRequest(cfguHandle)))return ret;
+
+	return (Result)cmdbuf[1];
+}
+
+Result CFGI_GetLocalFriendCodeSeed(u64* seed)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x405,0,0); // 0x4050000
+
+	if(R_FAILED(ret = svcSendSyncRequest(cfguHandle)))return ret;
+
+	*seed = (u64)cmdbuf[2] | (u64)cmdbuf[3] << 32;
+
+	return (Result)cmdbuf[1];
+}