Hash FS start.

source/gamecard.c

@@ -52,6 +52,7 @@ typedef enum {
 typedef struct {
     u64 offset;         ///< Relative to the start of the gamecard header.
     u64 size;           ///< Whole partition size.
+    u64 header_size;    ///< Full header size.
     u8 *header;         ///< GameCardHashFileSystemHeader + GameCardHashFileSystemEntry + Name Table.
 } GameCardHashFileSystemPartitionInfo;
 
@@ -100,8 +101,12 @@ static void gamecardCloseStorageArea(void);
 static bool gamecardGetStorageAreasSizes(void);
 static inline u64 gamecardGetCapacityFromRomSizeValue(u8 rom_size);
 
+static inline GameCardHashFileSystemHeader *gamecardGetHashFileSystemPartitionHeaderByIndex(u32 idx);
+static inline GameCardHashFileSystemEntry *gamecardGetHashFileSystemEntryByIndex(void *hfs_header, u32 idx);
+static inline char *gamecardGetHashFileSystemEntryName(void *hfs_header, u32 name_offset);
+
 /* Service guard used to generate thread-safe initialize + exit functions. */
-/* I'm using this here even though this actually isn't a service but who cares, it gets the job done. */
+/* I'm using this here even though this actually isn't a real service but who cares, it gets the job done. */
 NX_GENERATE_SERVICE_GUARD(gamecard);
 
 bool gamecardIsReady(void)
@@ -217,15 +222,52 @@ bool gamecardGetBundledFirmwareUpdateVersion(u32 *out)
     return ret;
 }
 
+bool gamecardGetHashFileSystemEntryDataOffsetByName(u32 hfs_partition_idx, const char *name, u64 *out_offset)
+{
+    bool ret = false;
+    char *entry_name = NULL;
+    size_t name_len = 0;
+    GameCardHashFileSystemHeader *fs_header = NULL;
+    GameCardHashFileSystemEntry *fs_entry = NULL;
     
+    mtx_lock(&g_gameCardSharedDataMutex);
     
+    if (!g_gameCardInserted || !g_gameCardInfoLoaded || !name || !*name || !out_offset)
+    {
+        LOGFILE("Invalid parameters!");
+        goto out;
+    }
     
+    name_len = strlen(name);
     
+    fs_header = gamecardGetHashFileSystemPartitionHeaderByIndex(hfs_partition_idx);
+    if (!fs_header)
+    {
+        LOGFILE("Invalid hash FS partition index! (0x%X)", hfs_partition_idx);
+        goto out;
+    }
     
+    for(u32 i = 0; i < fs_header->entry_count; i++)
+    {
+        fs_entry = gamecardGetHashFileSystemEntryByIndex(fs_header, i);
+        if (!fs_entry) continue;
         
+        entry_name = gamecardGetHashFileSystemEntryName(fs_header, fs_entry->name_offset);
+        if (!entry_name) continue;
         
+        if (!strncasecmp(entry_name, name, name_len))
+        {
+            *out_offset = (g_gameCardHfsPartitions[hfs_partition_idx].offset + g_gameCardHfsPartitions[hfs_partition_idx].header_size + fs_entry->offset);
+            ret = true;
+            break;
+        }
+    }
     
+out:
+    mtx_unlock(&g_gameCardSharedDataMutex);
     
+    return ret;
+}
 
 
 
@@ -521,11 +563,10 @@ static void gamecardLoadInfo(void)
     /* Read hash FS partitions */
     for(u32 i = 0; i < fs_header->entry_count; i++)
     {
-        fs_entry = (GameCardHashFileSystemEntry*)(g_gameCardHfsRootHeader + sizeof(GameCardHashFileSystemHeader) + (i * sizeof(GameCardHashFileSystemEntry)));
+        fs_entry = gamecardGetHashFileSystemEntryByIndex(g_gameCardHfsRootHeader, i);
-        
+        if (!fs_entry || !fs_entry->size)
-        if (!fs_entry->size)
         {
-            LOGFILE("Invalid size for hash FS partition #%u!", i);
+            LOGFILE("Invalid hash FS partition entry!");
             goto out;
         }
         
@@ -552,11 +593,12 @@ static void gamecardLoadInfo(void)
             goto out;
         }
         
-        /* Calculate the full header size for the current hash FS partition */
+        /* Calculate the full header size for the current hash FS partition and round it to a GAMECARD_MEDIA_UNIT_SIZE bytes boundary */
-        u64 partition_header_size = (sizeof(GameCardHashFileSystemHeader) + (partition_header.entry_count * sizeof(GameCardHashFileSystemEntry)) + partition_header.name_table_size);
+        g_gameCardHfsPartitions[i].header_size = (sizeof(GameCardHashFileSystemHeader) + (partition_header.entry_count * sizeof(GameCardHashFileSystemEntry)) + partition_header.name_table_size);
+        g_gameCardHfsPartitions[i].header_size = ROUND_UP(g_gameCardHfsPartitions[i].header_size, GAMECARD_MEDIA_UNIT_SIZE);
         
         /* Allocate memory for the hash FS partition header */
-        g_gameCardHfsPartitions[i].header = calloc(partition_header_size, sizeof(u8));
+        g_gameCardHfsPartitions[i].header = calloc(g_gameCardHfsPartitions[i].header_size, sizeof(u8));
         if (!g_gameCardHfsPartitions[i].header)
         {
             LOGFILE("Unable to allocate memory for the hash FS partition #%u header!", i);
@@ -564,7 +606,7 @@ static void gamecardLoadInfo(void)
         }
         
         /* Finally, read the full hash FS partition header */
-        if (!gamecardReadStorageArea(g_gameCardHfsPartitions[i].header, partition_header_size, g_gameCardHfsPartitions[i].offset, false))
+        if (!gamecardReadStorageArea(g_gameCardHfsPartitions[i].header, g_gameCardHfsPartitions[i].header_size, g_gameCardHfsPartitions[i].offset, false))
         {
             LOGFILE("Failed to read full hash FS partition #%u header from offset 0x%lX!", i, g_gameCardHfsPartitions[i].offset);
             goto out;
@@ -862,3 +904,25 @@ static inline u64 gamecardGetCapacityFromRomSizeValue(u8 rom_size)
     
     return capacity;
 }
+
+static inline GameCardHashFileSystemHeader *gamecardGetHashFileSystemPartitionHeaderByIndex(u32 idx)
+{
+    if (idx >= ((GameCardHashFileSystemHeader*)g_gameCardHfsRootHeader)->entry_count) return NULL;
+    return (GameCardHashFileSystemHeader*)g_gameCardHfsPartitions[idx].header;
+}
+
+static inline GameCardHashFileSystemEntry *gamecardGetHashFileSystemEntryByIndex(void *hfs_header, u32 idx)
+{
+    if (!hfs_header || idx >= ((GameCardHashFileSystemHeader*)hfs_header)->entry_count) return NULL;
+    return (GameCardHashFileSystemEntry*)((u8*)hfs_header + sizeof(GameCardHashFileSystemHeader) + (idx * sizeof(GameCardHashFileSystemEntry)));
+}
+
+static inline char *gamecardGetHashFileSystemEntryName(void *hfs_header, u32 name_offset)
+{
+    if (!hfs_header) return NULL;
+    
+    GameCardHashFileSystemHeader *header = (GameCardHashFileSystemHeader*)hfs_header;
+    if (!header->entry_count || name_offset >= header->name_table_size) return NULL;
+    
+    return ((char*)hfs_header + sizeof(GameCardHashFileSystemHeader) + (header->entry_count * sizeof(GameCardHashFileSystemEntry)) + name_offset);
+}

source/gamecard.h

@@ -155,4 +155,6 @@ bool gamecardGetRomCapacity(u64 *out); ///< Not the same as gamecardGetTotalSize
 bool gamecardGetCertificate(FsGameCardCertificate *out);
 bool gamecardGetBundledFirmwareUpdateVersion(u32 *out);
 
+bool gamecardGetHashFileSystemEntryDataOffsetByName(u32 hfs_partition_idx, const char *name, u64 *out_offset);
+
 #endif /* __GAMECARD_H__ */

source/keys.c

@@ -29,6 +29,8 @@
 #define SEGMENT_RODATA      BIT(1)
 #define SEGMENT_DATA        BIT(2)
 
+/* Type definitions. */
+
 typedef struct {
     u64 program_id;
     u8 mask;
@@ -69,6 +71,8 @@ typedef struct {
     u8 key_area_keys[0x20][3][0x10];            ///< Key area encryption keys.
 } keysNcaKeyset;
 
+/* Global variables. */
+
 static keysNcaKeyset g_ncaKeyset = {0};
 
 static keysMemoryInfo g_fsRodataMemoryInfo = {
@@ -130,6 +134,8 @@ static keysMemoryInfo g_fsDataMemoryInfo = {
     }
 };
 
+/* Function prototypes. */
+
 static bool keysRetrieveDebugHandleFromProcessByProgramId(Handle *out, u64 program_id);
 static bool keysRetrieveProcessMemory(keysMemoryLocation *location);
 static void keysFreeProcessMemory(keysMemoryLocation *location);

source/main.c

@@ -65,6 +65,7 @@ int main(int argc, char *argv[])
     FsGameCardCertificate cert = {0};
     u64 total_size = 0, trimmed_size = 0;
     u32 update_version = 0;
+    u64 nca_offset = 0;
     
     if (gamecardGetHeader(&header))
     {
@@ -167,6 +168,15 @@ int main(int argc, char *argv[])
     
     consoleUpdate(NULL);
     
+    if (gamecardGetHashFileSystemEntryDataOffsetByName(2, "7e86768383cfabb30f1b58d2373fed07.nca", &nca_offset)) // Should match 0x1657F5E00
+    {
+        printf("nca_offset: 0x%lX\n", nca_offset);
+    } else {
+        printf("nca_offset failed\n");
+    }
+    
+    consoleUpdate(NULL);
+    
     SLEEP(3);
     consoleExit(NULL);
     

source/nca.h

@@ -265,7 +265,7 @@ typedef struct {
 typedef struct {
     u8 storage_id;                      ///< NcmStorageId.
     NcmContentStorage *ncm_storage;     ///< Pointer to a NcmContentStorage instance. Used to read NCA data.
-    u64 gc_secure_area_base_offset;     ///< Used to read NCA data from a gamecard using a FsStorage instance when storage_id == NcmStorageId_GameCard.
+    u64 gamecard_offset;                ///< Used to read NCA data from a gamecard using a FsStorage instance when storage_id == NcmStorageId_GameCard.
     NcmContentId id;                    ///< Also used to read NCA data.
     char id_str[0x21];
     u8 hash[0x20];

source/services.c

@@ -92,7 +92,7 @@ bool servicesInitialize(void)
         rc = g_serviceInfo[i].init_func();
         if (R_FAILED(rc))
         {
-            utilsConsoleErrorScreen("%s: failed to initialize %s service! (0x%08X)", __func__, g_serviceInfo[i].name, rc);
+            LOGFILE("Failed to initialize %s service! (0x%08X)", g_serviceInfo[i].name, rc);
             ret = false;
             break;
         }

source/utils.c

@@ -22,18 +22,23 @@
 
 //#include "freetype_helper.h"
 //#include "lvgl_helper.h"
-#include "services.h"
+#include "keys.h"
 #include "gamecard.h"
+#include "services.h"
 #include "utils.h"
 
 /* Global variables. */
 
+static u8 g_customFirmwareType = UtilsCustomFirmwareType_Unknown;
+
 static AppletHookCookie g_systemOverclockCookie = {0};
 
 static Mutex g_logfileMutex = 0;
 
 /* Function prototypes. */
 
+static void _utilsGetCustomFirmwareType(void);
+
 static void utilsOverclockSystemAppletHook(AppletHookType hook, void *param);
 
 u64 utilsHidKeysAllDown(void)
@@ -71,22 +76,6 @@ void utilsWaitForButtonPress(void)
     }
 }
 
-void utilsConsoleErrorScreen(const char *fmt, ...)
-{
-    consoleInit(NULL);
-    
-    va_list va;
-    va_start(va, fmt);
-    vprintf(fmt, va);
-    va_end(va);
-    
-    printf("\nPress any button to exit.\n");
-    
-    consoleUpdate(NULL);
-    utilsWaitForButtonPress();
-    consoleExit(NULL);
-}
-
 void utilsWriteLogMessage(const char *func_name, const char *fmt, ...)
 {
     mutexLock(&g_logfileMutex);
@@ -122,8 +111,19 @@ void utilsOverclockSystem(bool restore)
 
 bool utilsInitializeResources(void)
 {
-    /* Initialize all needed services */
+    /* Initialize needed services */
-    if (!servicesInitialize()) return false;
+    if (!servicesInitialize())
+    {
+        LOGFILE("Failed to initialize needed services!");
+        return false;
+    }
+    
+    /* Load NCA keyset */
+    if (!keysLoadNcaKeyset())
+    {
+        LOGFILE("Failed to load NCA keyset!");
+        return false;
+    }
     
     /* Initialize FreeType */
     //if (!freeTypeHelperInitialize()) return false;
@@ -131,17 +131,20 @@ bool utilsInitializeResources(void)
     /* Initialize LVGL */
     //if (!lvglHelperInitialize()) return false;
     
+    /* Retrieve custom firmware type */
+    _utilsGetCustomFirmwareType();
+    
     /* Overclock system */
     utilsOverclockSystem(false);
     
     /* Setup an applet hook to change the hardware clocks after a system mode change (docked <-> undocked) */
     appletHook(&g_systemOverclockCookie, utilsOverclockSystemAppletHook, NULL);
     
-    /* Initialize gamecard */
+    /* Initialize gamecard interface */
     Result rc = gamecardInitialize();
     if (R_FAILED(rc))
     {
-        utilsConsoleErrorScreen("gamecard fail\n");
+        LOGFILE("Failed to initialize gamecard interface!");
         return false;
     }
     
@@ -150,7 +153,7 @@ bool utilsInitializeResources(void)
 
 void utilsCloseResources(void)
 {
-    /* Deinitialize gamecard */
+    /* Deinitialize gamecard interface */
     gamecardExit();
     
     /* Unset our overclock applet hook */
@@ -169,6 +172,31 @@ void utilsCloseResources(void)
     servicesClose();
 }
 
+u8 utilsGetCustomFirmwareType(void)
+{
+    return g_customFirmwareType;
+}
+
+static void _utilsGetCustomFirmwareType(void)
+{
+    bool tx_srv = servicesCheckRunningServiceByName("tx");
+    bool rnx_srv = servicesCheckRunningServiceByName("rnx");
+    
+    if (!tx_srv && !rnx_srv)
+    {
+        /* Atmosphere */
+        g_customFirmwareType = UtilsCustomFirmwareType_Atmosphere;
+    } else
+    if (tx_srv && !rnx_srv)
+    {
+        /* SX OS */
+        g_customFirmwareType = UtilsCustomFirmwareType_SXOS;
+    } else {
+        /* ReiNX */
+        g_customFirmwareType = UtilsCustomFirmwareType_ReiNX;
+    }
+}
+
 static void utilsOverclockSystemAppletHook(AppletHookType hook, void *param)
 {
     (void)param;

source/utils.h

@@ -36,9 +36,10 @@
 
 
 typedef enum {
-    UtilsCustomFirmwareType_Atmosphere = 0,
+    UtilsCustomFirmwareType_Unknown    = 0,
-    UtilsCustomFirmwareType_SXOS       = 1,
+    UtilsCustomFirmwareType_Atmosphere = 1,
-    UtilsCustomFirmwareType_ReiNX      = 2
+    UtilsCustomFirmwareType_SXOS       = 2,
+    UtilsCustomFirmwareType_ReiNX      = 3
 } UtilsCustomFirmwareType;
 
 typedef struct {
@@ -56,8 +57,6 @@ u64 utilsHidKeysAllHeld(void);
 
 void utilsWaitForButtonPress(void);
 
-void utilsConsoleErrorScreen(const char *fmt, ...);
-
 void utilsWriteLogMessage(const char *func_name, const char *fmt, ...);
 
 void utilsOverclockSystem(bool restore);
@@ -65,6 +64,8 @@ void utilsOverclockSystem(bool restore);
 bool utilsInitializeResources(void);
 void utilsCloseResources(void);
 
+u8 utilsGetCustomFirmwareType(void);    ///< UtilsCustomFirmwareType.
+
 
 
 static inline FsStorage *utilsGetEmmcBisSystemStorage(void)
@@ -72,11 +73,6 @@ static inline FsStorage *utilsGetEmmcBisSystemStorage(void)
     return NULL;
 }
 
-static inline u8 utilsGetCustomFirmwareType(void)
-{
-    return UtilsCustomFirmwareType_Atmosphere;
-}
-
 
 
 #endif /* __UTILS_H__ */