Merge pull request #225 from Dazzozo/am-title-database

AM: implement external title database IPC functions

libctru/include/3ds/services/am.h

@@ -112,3 +112,15 @@ Result AM_GetTitleProductCode(u8 mediatype, u64 titleID, char* productCode);
  * @param fileHandle Handle of the CIA file to read.
  */
 Result AM_GetCiaFileInfo(u8 mediatype, AM_TitleEntry *titleEntry, Handle fileHandle);
+
+/**
+ * @brief Initializes the external (SD) title database.
+ * @param overwrite Overwrites the database if it already exists.
+ */
+Result AM_InitializeExternalTitleDatabase(bool overwrite);
+
+/**
+ * @brief Queries whether the external title database is available.
+ * @param[out] available Pointer to output the availability status to.
+ */
+Result AM_QueryAvailableExternalTitleDatabase(bool* available);

libctru/source/services/am.c

@@ -233,3 +233,34 @@ Result AM_GetCiaFileInfo(u8 mediatype, AM_TitleEntry *titleEntry, Handle fileHan
 
 	return (Result)cmdbuf[1];
 }
+
+Result AM_InitializeExternalTitleDatabase(bool overwrite)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x18,2,0); // 0x180080
+	cmdbuf[1] = 1; // No other media type is accepted
+	cmdbuf[2] = overwrite;
+
+	if(R_FAILED(ret = svcSendSyncRequest(amHandle))) return ret;
+
+	return (Result)cmdbuf[1];
+}
+
+Result AM_QueryAvailableExternalTitleDatabase(bool* available)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x19,1,0); // 0x190040
+	cmdbuf[1] = 1; // No other media type is accepted
+
+	if(R_FAILED(ret = svcSendSyncRequest(amHandle))) return ret;
+	if(R_FAILED(ret = (Result)cmdbuf[1])) return ret;
+
+	// Only accept this if the command was a success
+	if(available) *available = cmdbuf[2];
+
+	return ret;
+}