Added neimod's ctrtool

Will be base code for improvments

ctrtool/romfs.h

@@ -0,0 +1,90 @@
+#ifndef __ROMFS_H__
+#define __ROMFS_H__
+
+#include "types.h"
+#include "info.h"
+#include "ctr.h"
+#include "filepath.h"
+#include "settings.h"
+#include "ivfc.h"
+
+#define ROMFS_MAXNAMESIZE	254		// limit set by ctrtool
+
+typedef struct
+{
+	u8 magic[4];
+} romfs_header;
+
+typedef struct
+{
+	u8 offset[4];
+	u8 size[4];
+} romfs_sectionheader;
+
+typedef struct
+{
+	u8 headersize[4];
+	romfs_sectionheader section[4];
+	u8 dataoffset[4];
+} romfs_infoheader;
+
+
+typedef struct
+{
+	u8 parentoffset[4];
+	u8 siblingoffset[4];
+	u8 childoffset[4];
+	u8 fileoffset[4];
+	u8 weirdoffset[4]; // this one is weird. it always points to a dir entry, but seems unrelated to the romfs structure.
+	u8 namesize[4];
+	u8 name[ROMFS_MAXNAMESIZE];
+} romfs_direntry;
+
+typedef struct
+{
+	u8 parentdiroffset[4];
+	u8 siblingoffset[4];
+	u8 dataoffset[8];
+	u8 datasize[8];
+	u8 weirdoffset[4]; // this one is also weird. it always points to a file entry, but seems unrelated to the romfs structure.
+	u8 namesize[4];
+	u8 name[ROMFS_MAXNAMESIZE];
+} romfs_fileentry;
+
+
+typedef struct
+{
+	FILE* file;
+	settings* usersettings;
+	u32 offset;
+	u32 size;
+	romfs_header header;
+	romfs_infoheader infoheader;
+	u8* dirblock;
+	u32 dirblocksize;
+	u8* fileblock;
+	u32 fileblocksize;
+	u32 datablockoffset;
+	u32 infoblockoffset;
+	romfs_direntry direntry;
+	romfs_fileentry fileentry;
+	ivfc_context ivfc;
+} romfs_context;
+
+void romfs_init(romfs_context* ctx);
+void romfs_set_file(romfs_context* ctx, FILE* file);
+void romfs_set_offset(romfs_context* ctx, u32 offset);
+void romfs_set_size(romfs_context* ctx, u32 size);
+void romfs_set_usersettings(romfs_context* ctx, settings* usersettings);
+void romfs_test(romfs_context* ctx);
+int  romfs_dirblock_read(romfs_context* ctx, u32 diroffset, u32 dirsize, void* buffer);
+int  romfs_dirblock_readentry(romfs_context* ctx, u32 diroffset, romfs_direntry* entry);
+int  romfs_fileblock_read(romfs_context* ctx, u32 fileoffset, u32 filesize, void* buffer);
+int  romfs_fileblock_readentry(romfs_context* ctx, u32 fileoffset, romfs_fileentry* entry);
+void romfs_visit_dir(romfs_context* ctx, u32 diroffset, u32 depth, u32 actions, filepath* rootpath);
+void romfs_visit_file(romfs_context* ctx, u32 fileoffset, u32 depth, u32 actions, filepath* rootpath);
+void romfs_extract_datafile(romfs_context* ctx, u64 offset, u64 size, filepath* path);
+void romfs_process(romfs_context* ctx, u32 actions);
+void romfs_print(romfs_context* ctx);
+
+#endif // __ROMFS_H__