nro/
lib.rs

1#![allow(non_snake_case)]
2use binrw::*;
3
4#[binrw]
5#[derive(Clone)]
6pub struct NRO {
7    pub start: NROStart,
8    pub header: NROHeader,
9    #[br(count(header.size - 0x80))]
10    pub data: Vec<u8>,
11    #[br(try)]
12    pub assets: Option<Assets>
13}
14
15#[binrw]
16#[derive(Clone, Copy)]
17pub struct NROStart {
18    pub unused: u32,
19    pub MOD0Offset: u32,
20    pub padding: [u8; 0x8],
21}
22
23#[binrw]
24#[br(magic=b"NRO0")]
25#[derive(Clone, Copy)]
26pub struct NROHeader {
27    pub version: u32, // Always 0
28    pub size: u32, // Full NRO file size
29    pub flags: u32, // unused
30    pub textSegmentHeader: SegmentHeader,
31    pub roSegmentHeader: SegmentHeader,
32    pub dataSegmentHeader: SegmentHeader,
33    pub BssSize: u32,
34    pub reserved: [u8; 0x4],
35    pub ModuleID: [u8; 0x20],
36    pub DsoHandleOffset: u32, // unused
37    pub reserved_2: [u8; 0x4],
38    pub apiInfoSegmentHeader: SegmentHeader,
39    pub dynstrSegmentHeader: SegmentHeader,
40    pub dynsymSegmentHeader: SegmentHeader
41}
42
43#[binrw]
44#[derive(Clone, Copy)]
45pub struct SegmentHeader {
46    pub MemoryOffset: u32,
47    pub size: u32
48}
49
50#[binrw]
51#[derive(Clone)]
52pub struct Assets { // Goes unused in cargo-skyline generated NROs
53    pub assetHeader: AssetHeader,
54
55    #[br(offset = assetHeader.iconAssetSection.offset)]
56    #[br(if(assetHeader.iconAssetSection.size != 0))]
57    #[br(count(assetHeader.iconAssetSection.size))]
58    pub icon: Option<Vec<u8>>,
59
60    #[br(offset = assetHeader.nacpAssetSection.offset)]
61    #[br(if(assetHeader.nacpAssetSection.size != 0))]
62    #[br(count(assetHeader.nacpAssetSection.size))]
63    pub nacp: Option<Vec<u8>>,
64
65    #[br(offset = assetHeader.romfsAssetSection.offset)]
66    #[br(if(assetHeader.romfsAssetSection.size != 0))]
67    #[br(count(assetHeader.romfsAssetSection.size))]
68    pub romfs: Option<Vec<u8>>
69}
70
71#[binrw]
72#[br(magic=b"ASET")]
73#[derive(Clone, Copy)]
74pub struct AssetHeader {
75    pub version: u32,
76    pub iconAssetSection: AssetSection,
77    pub nacpAssetSection: AssetSection,
78    pub romfsAssetSection: AssetSection
79}
80
81#[binrw]
82#[derive(Clone, Copy)]
83pub struct AssetSection {
84    pub offset: u64,
85    pub size: u64
86}
nro/lib.rs

nro/
lib.rs
