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https://github.com/Dingo-Shenanigans/ReSkate.git
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AyeZeeBB
43b998f285
Fourth Studio's Board Break pack (ten decks and every sound) and Road Rash wounds are built into ReSkate.dll beside the FPV drone, unpacked under Mods/.reskate-builtin and always on. - The Thunderstore copies (Fourth_Studio-Board_Break_Pack, Fourth_Studio-Road_Rash and the deprecated Fourth_Studio-Board_Break, or the same put in by hand) are moved to the Recycle Bin as the launcher starts and dropped from mods.json; the merge leaves them out should one still be there, and the Thunderstore browser no longer lists, updates or installs them, a dependency on one included. - Board Break's deck list, sounds and deck settings look in the built-in packs too. - Names with spaces inside them (Board Break's "Body Impact 1.wav") unpack. - The build makes each zip in assets/builtin into one zstd stream (ReSkateBuiltinPacker, Engine/Vfs/builtin_pack_format.h), which the DLL carries: repeated files across a pack cost next to nothing. Board Break 15.0 -> 5.4 MB, the drone 6.0 -> 5.4 MB, Road Rash 36.1 -> 34.2 MB; ReSkate.dll 86 -> 70 MB. Plain zips still unpack. - Tests: the mods taken for built-in ones and their retirement, and a pack unpacking to exactly its files, refusing one that leaves its folder or is cut short (RESKATE_BUILTIN_PACKS also unpacks the packs a build made).
42 lines
1.9 KiB
C++
42 lines
1.9 KiB
C++
#pragma once
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// The built-in pack format (Engine/Vfs/builtin_packs.h), as BuiltinPacker writes it at build time
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// from a zip in assets/builtin and ReSkate unpacks it: one zstd frame (with its content size and a
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// checksum) holding
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// "RSKPACK1", u32 file count,
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// for each file: u16 name length, the name (UTF-8, '/' between folders), u64 size,
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// then every file's bytes in the same order.
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// Numbers little-endian.
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#include <algorithm>
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#include <array>
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#include <cstdint>
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#include <string_view>
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namespace dingosdk::mods::builtin_pack {
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inline constexpr std::array<char, 8> magic{'R', 'S', 'K', 'P', 'A', 'C', 'K', '1'};
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// The most a pack may unpack to, and the largest zstd window it may use (zstd's own default
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// limit for decoding, 128 MiB).
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inline constexpr std::uint64_t max_bytes = 512ull * 1024 * 1024;
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inline constexpr int max_window_log = 27;
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// A path inside a pack: relative, forward slashes, no "..", plain characters (and spaces inside a
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// name, as in a sound's "Body Impact 1.wav", but never at either end of one).
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inline bool safe_name(std::string_view name) {
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if (name.empty() || name.size() > 260 || name.front() == '/' || name.find(':') != std::string_view::npos ||
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name.find('\\') != std::string_view::npos)
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return false;
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std::size_t start = 0;
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while (start <= name.size()) {
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const auto end = std::min(name.find('/', start), name.size());
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const auto part = name.substr(start, end - start);
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if (part.empty() || part == "." || part == ".." || part.front() == ' ' || part.back() == ' ') return false;
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if (!std::all_of(part.begin(), part.end(), [](char c) {
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return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '.' || c == '_' ||
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c == '-' || c == ' ';
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}))
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return false;
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start = end + 1;
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}
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return true;
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}
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}
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