Fix CMD & NCSD handling

arm9/source/filesys/filetype.c

@@ -124,7 +124,7 @@ u64 IdentifyFileType(const char* path) {
         (memcmp(data, threedsx_magic, sizeof(threedsx_magic)) == 0)) {
         return GAME_3DSX; // 3DSX (executable) file
     } else if ((fsize > sizeof(CmdHeader)) &&
-        CheckCmdSize((CmdHeader*) data, fsize) == 0) {
+        (CMD_SIZE((CmdHeader*) data) == fsize)) {
         return GAME_CMD; // CMD file
     } else if ((fsize > sizeof(NcchInfoHeader)) &&
         (GetNcchInfoVersion((NcchInfoHeader*) data)) &&

arm9/source/game/cmd.c

@@ -1,50 +1,62 @@
 #include "cmd.h"
 
 
-u32 CheckCmdSize(CmdHeader* cmd, u64 fsize) {
+CmdHeader* BuildAllocCmdData(TitleMetaData* tmd) {
-	u64 cmdsize = sizeof(CmdHeader) +
+    CmdHeader proto;
-		(cmd->n_entries * sizeof(u32)) +
+    CmdHeader* cmd = NULL;
-		(cmd->n_cmacs   * sizeof(u32)) +
-		(cmd->n_entries * 0x10);
-
-	return (fsize == cmdsize) ? 0 : 1;
-}
-
-u32 BuildCmdData(CmdHeader* cmd, TitleMetaData* tmd) {
     u32 content_count = getbe16(tmd->content_count);
+    u32 max_cnt_id = 0;
 
-    // header basic info
+    // sanity check
-    cmd->cmd_id = 0x1;
+    if (!content_count)
-    cmd->n_entries = content_count;
+        return NULL;
-    cmd->n_cmacs = content_count;
+
+    // find max content id
+    TmdContentChunk* chunk = (TmdContentChunk*) (tmd + 1);
+    for (u32 i = 0; (i < content_count) && (i < TMD_MAX_CONTENTS); i++, chunk++)
+        if (getbe32(chunk->id) > max_cnt_id) max_cnt_id = getbe32(chunk->id);
+
+    // allocate memory for CMD / basic setup
+    proto.cmd_id = 1;
+    proto.n_entries = max_cnt_id + 1;
+    proto.n_cmacs = content_count;
+    proto.unknown = 1;
+    cmd = (CmdHeader*) malloc(CMD_SIZE(&proto));
+    if (!cmd) return NULL;
+    memcpy(cmd, &proto, sizeof(CmdHeader));
     cmd->unknown = 0x0; // this means no CMACs, only valid for NAND
 
     // copy content ids
     u32* cnt_id = (u32*) (cmd + 1);
-    u32* cnt_id_cpy = cnt_id + content_count;
+    u32* cnt_id_2nd = cnt_id + cmd->n_entries;
-	TmdContentChunk* chunk = (TmdContentChunk*) (tmd + 1);
+    chunk = (TmdContentChunk*) (tmd + 1);
+    memset(cnt_id, 0xFF, cmd->n_entries * sizeof(u32));
     for (u32 i = 0; (i < content_count) && (i < TMD_MAX_CONTENTS); i++, chunk++) {
-    	cnt_id[i] = getbe32(chunk->id);
+        u32 chunk_id = getbe32(chunk->id);
-    	cnt_id_cpy[i] = cnt_id[i];
+        cnt_id[chunk_id] = chunk_id;
+        *(cnt_id_2nd++) = chunk_id;
     }
 
     // bubble sort the second content id list
-    u32 b = 0;
+    bool bs_finished = false;
-    while ((b < content_count) && (b < TMD_MAX_CONTENTS)) {
+    cnt_id_2nd = cnt_id + cmd->n_entries;
-        for (b = 1; (b < content_count) && (b < TMD_MAX_CONTENTS); b++) {
+    while (!bs_finished) {
-            if (cnt_id_cpy[b] < cnt_id_cpy[b-1]) {
+        bs_finished = true;
-                u32 swp = cnt_id_cpy[b];
+        for (u32 b = 1; b < cmd->n_cmacs; b++) {
-                cnt_id_cpy[b] = cnt_id_cpy[b-1];
+            if (cnt_id_2nd[b] < cnt_id_2nd[b-1]) {
-                cnt_id_cpy[b-1] = swp;
+                u32 swp = cnt_id_2nd[b];
+                cnt_id_2nd[b] = cnt_id_2nd[b-1];
+                cnt_id_2nd[b-1] = swp;
+                bs_finished = false;
             }
         }
     }
 
     // set CMACs to 0xFF
-    u8* cnt_cmac = (u8*) (cnt_id + (2*cmd->n_entries));
+    u8* cnt_cmac = (u8*) (cnt_id_2nd + cmd->n_cmacs);
     memset(cmd->cmac, 0xFF, 0x10);
-    memset(cnt_cmac, 0xFF, 0x10 * content_count);
+    memset(cnt_cmac, 0xFF, 0x10 * cmd->n_entries);
 
     // we still need to fix / set the CMACs inside the CMD file!
-    return 0;
+    return cmd;
 }

arm9/source/game/cmd.h

@@ -3,9 +3,10 @@
 #include "common.h"
 #include "tmd.h"
 
-#define CMD_SIZE_N(n)	(sizeof(CmdHeader) + ((n)*(sizeof(u32)+sizeof(u32)+0x10)))
+#define CMD_SIZE(cmd)	(sizeof(CmdHeader) + \
-#define CMD_SIZE_NS(n)	(sizeof(CmdHeader) + ((n)*(sizeof(u32)+sizeof(u32))))
+							(((cmd)->n_entries) * sizeof(u32)) + \
-
+							(((cmd)->n_cmacs) * sizeof(u32)) + \
+							(((cmd)->unknown) ? (((cmd)->n_entries) * 0x10) : 0))
 
 // from: http://3dbrew.org/wiki/Titles#Data_Structure
 typedef struct {
@@ -19,5 +20,4 @@ typedef struct {
 	// followed by <n_entries> CMACs (may contain garbage)
 } __attribute__((packed, aligned(4))) CmdHeader;
 
-u32 CheckCmdSize(CmdHeader* cmd, u64 fsize);
+CmdHeader* BuildAllocCmdData(TitleMetaData* tmd);
-u32 BuildCmdData(CmdHeader* cmd, TitleMetaData* tmd);

arm9/source/game/tie.c

@@ -25,7 +25,7 @@ u32 BuildTitleInfoEntryTmd(TitleInfoEntry* tie, TitleMetaData* tmd, bool sd) {
 	tie->title_size =
 		(align_size * 3) + // base folder + 'content' + 'cmd'
 		align(TMD_SIZE_N(content_count), align_size) + // TMD
-		align(CMD_SIZE_N(content_count), align_size);  // CMD
+		align_size; // CMD, placeholder
 	for (u32 i = 0; (i < content_count) && (i < TMD_MAX_CONTENTS); i++, chunk++) {
     	if (getbe32(chunk->id) == 1) has_id1 = true; // will be useful later
     	tie->title_size += align(getbe64(chunk->size), align_size);

arm9/source/utils/gameutil.c

@@ -1402,10 +1402,9 @@ u32 InstallCiaSystemData(CiaStub* cia, const char* drv) {
         return 1;
     
     // build the cmd
-    cmd = (CmdHeader*) malloc(CMD_SIZE_N(content_count));
+    cmd = BuildAllocCmdData(tmd);
     if (!cmd) return 1;
-    BuildCmdData(cmd, tmd);
+    cmd->unknown = 0xFFFFFFFE; // mark this as custom built
-    if (!syscmd) cmd->unknown = 0xFFFFFFFE; // mark this as custom built
     
     // generate all the paths
     snprintf(path_titledb, 32, "%2.2s/dbs/title.db",
@@ -1423,8 +1422,7 @@ u32 InstallCiaSystemData(CiaStub* cia, const char* drv) {
     fvx_rmkpath(path_tmd);
     fvx_rmkpath(path_cmd);
     if ((fvx_qwrite(path_tmd, tmd, 0, TMD_SIZE_N(content_count), NULL) != FR_OK) ||
-        (fvx_qwrite(path_cmd, cmd, 0,
+        (fvx_qwrite(path_cmd, cmd, 0, CMD_SIZE(cmd), NULL) != FR_OK)) {
-            syscmd ? CMD_SIZE_NS(content_count) : CMD_SIZE_N(content_count), NULL) != FR_OK)) {
         free(cmd);
         return 1;
     }
@@ -1963,7 +1961,7 @@ u32 BuildInstallFromNcsdFile(const char* path_ncsd, const char* path_dest, bool
         if ((!install && (InsertCiaContent(path_dest, path_ncsd,
                 offset, size, chunk++, NULL, false, (i == 0), false) != 0)) ||
             (install && (InstallCiaContent(path_dest, path_ncsd,
-                offset, size, chunk, title_id, NULL, (i == 0)) != 0))) {
+                offset, size, chunk++, title_id, NULL, (i == 0)) != 0))) {
             free(cia);
             return 1;
         }
@@ -2161,9 +2159,8 @@ u32 InstallGameFile(const char* path, bool to_emunand, bool force_nand) {
         to_sd = true;
 
     // does the title.db exist?
-    if (to_sd && !fvx_qsize(to_emunand ? "B:/dbs/title.db" : "A:/dbs/title.db"))
+    if ((to_sd && !fvx_qsize(to_emunand ? "B:/dbs/title.db" : "A:/dbs/title.db")) ||
-        to_sd = false;
+        (!to_sd && !fvx_qsize(to_emunand ? "4:/dbs/title.db" : "1:/dbs/title.db")))
-    if (!to_sd && !fvx_qsize(to_emunand ? "4:/dbs/title.db" : "1:/dbs/title.db"))
         return 1;
 
     // now we know the correct drive
@@ -2411,7 +2408,6 @@ u32 LoadSmdhFromGameFile(const char* path, Smdh* smdh) {
         if (LoadExeFsFile(smdh, path, NCSD_CNT0_OFFSET, "icon", sizeof(Smdh), NULL) == 0) return 0;
     } else if (filetype & GAME_CIA) { // CIA file
         CiaInfo info;       
-        
         if ((fvx_qread(path, &info, 0, 0x20, NULL) != FR_OK) ||
             (GetCiaInfo(&info, (CiaHeader*) &info) != 0)) return 1;
         if ((info.offset_meta) && (fvx_qread(path, smdh, info.offset_meta + 0x400, sizeof(Smdh), NULL) == FR_OK)) return 0;

arm9/source/utils/nandcmac.c

@@ -374,7 +374,7 @@ u32 CheckFixCmdCmac(const char* path, bool fix) {
 
     // read the full file to memory and check it (we may write it back later)
     if ((fvx_qread(path, cmd_data, 0, cmd_size, NULL) != FR_OK) ||
-        (CheckCmdSize(cmd, cmd_size) != 0)) {
+        (CMD_SIZE(cmd) != cmd_size)) {
         free(cmd_data);
         return 1;
     }