[Feature Request] Extract exefs from games

[SuperTavor]

citra skill issue, would appreciate if you could add it.

[wheremyfoodat]

The code to do this is already there pretty much, need a UI to actually do it though.

[SuperTavor]

epic! can't wait. btw, thanks for the literal godspeed response

[wheremyfoodat]

:rpog:

[wheremyfoodat]

You can hack ExeFS dumping into the source code real quick if you'd like too

[SuperTavor]

my cpp is not nearly good enough 😭

[SuperTavor]

guess I gotta watch another 6 hour course

[wheremyfoodat]

Panda3DS/src/core/loader/ncch.cpp

Lines 176 to 214 in 26bb05b

	for (int i = 0; i < 10; i++) {
	u8* fileInfo = &exeFSHeader[i * 16];
	char name[9];
	std::memcpy(name, fileInfo, 8); // Get file name as a string
	name[8] = '\0'; // Add null terminator to it just in case there's none
	u32 fileOffset = *(u32*)&fileInfo[0x8];
	u32 fileSize = *(u32*)&fileInfo[0xC];
	if (fileSize != 0) {
	printf("File %d. Name: %s, Size: %08X, Offset: %08X\n", i, name, fileSize, fileOffset);
	}
	if (std::strcmp(name, ".code") == 0) {
	if (hasCode()) {
	Helpers::panic("Second code file in a single NCCH partition. What should this do?\n");
	}
	if (compressCode) {
	std::vector<u8> tmp;
	tmp.resize(fileSize);
	// A file offset of 0 means our file is located right after the ExeFS header
	// So in the ROM, files are located at (file offset + exeFS offset + exeFS header size)
	readFromFile(file, exeFS, tmp.data(), fileOffset + exeFSHeaderSize, fileSize);
	// Decompress .code file from the tmp vector to the "code" vector
	if (!CartLZ77::decompress(codeFile, tmp)) {
	printf("Failed to decompress .code file\n");
	return false;
	}
	} else {
	codeFile.resize(fileSize);
	readFromFile(file, exeFS, codeFile.data(), fileOffset + exeFSHeaderSize, fileSize);
	}
	}
	}
	}

This is the code that enumerates ExeFS files. You can use the same code used for reading the .code file to load the other ExeFS files, and dump them like this https://stackoverflow.com/a/14089675

[SuperTavor]

I'll try, thanks