summaryrefslogtreecommitdiffstats
path: root/src/core/file_sys/patch_manager.cpp
blob: 019caebe93fb7db6989bd505e169ea1a5886218a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include <algorithm>
#include <array>
#include <cstddef>
#include <cstring>

#include "common/hex_util.h"
#include "common/logging/log.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/control_metadata.h"
#include "core/file_sys/ips_layer.h"
#include "core/file_sys/patch_manager.h"
#include "core/file_sys/registered_cache.h"
#include "core/file_sys/romfs.h"
#include "core/file_sys/vfs_layered.h"
#include "core/file_sys/vfs_vector.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/loader/loader.h"

namespace FileSys {

constexpr u64 SINGLE_BYTE_MODULUS = 0x100;
constexpr u64 DLC_BASE_TITLE_ID_MASK = 0xFFFFFFFFFFFFE000;

struct NSOBuildHeader {
    u32_le magic;
    INSERT_PADDING_BYTES(0x3C);
    std::array<u8, 0x20> build_id;
    INSERT_PADDING_BYTES(0xA0);
};
static_assert(sizeof(NSOBuildHeader) == 0x100, "NSOBuildHeader has incorrect size.");

std::string FormatTitleVersion(u32 version, TitleVersionFormat format) {
    std::array<u8, sizeof(u32)> bytes{};
    bytes[0] = version % SINGLE_BYTE_MODULUS;
    for (std::size_t i = 1; i < bytes.size(); ++i) {
        version /= SINGLE_BYTE_MODULUS;
        bytes[i] = version % SINGLE_BYTE_MODULUS;
    }

    if (format == TitleVersionFormat::FourElements)
        return fmt::format("v{}.{}.{}.{}", bytes[3], bytes[2], bytes[1], bytes[0]);
    return fmt::format("v{}.{}.{}", bytes[3], bytes[2], bytes[1]);
}

PatchManager::PatchManager(u64 title_id) : title_id(title_id) {}

PatchManager::~PatchManager() = default;

VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
    LOG_INFO(Loader, "Patching ExeFS for title_id={:016X}", title_id);

    if (exefs == nullptr)
        return exefs;

    const auto installed = Service::FileSystem::GetUnionContents();

    // Game Updates
    const auto update_tid = GetUpdateTitleID(title_id);
    const auto update = installed->GetEntry(update_tid, ContentRecordType::Program);
    if (update != nullptr) {
        if (update->GetStatus() == Loader::ResultStatus::ErrorMissingBKTRBaseRomFS &&
            update->GetExeFS() != nullptr) {
            LOG_INFO(Loader, "    ExeFS: Update ({}) applied successfully",
                     FormatTitleVersion(installed->GetEntryVersion(update_tid).get_value_or(0)));
            exefs = update->GetExeFS();
        }
    }

    return exefs;
}

static std::vector<VirtualFile> CollectPatches(const std::vector<VirtualDir>& patch_dirs,
                                               const std::string& build_id) {
    std::vector<VirtualFile> out;
    out.reserve(patch_dirs.size());
    for (const auto& subdir : patch_dirs) {
        auto exefs_dir = subdir->GetSubdirectory("exefs");
        if (exefs_dir != nullptr) {
            for (const auto& file : exefs_dir->GetFiles()) {
                if (file->GetExtension() == "ips") {
                    auto name = file->GetName();
                    const auto p1 = name.substr(0, name.find('.'));
                    const auto this_build_id = p1.substr(0, p1.find_last_not_of('0') + 1);

                    if (build_id == this_build_id)
                        out.push_back(file);
                } else if (file->GetExtension() == "pchtxt") {
                    IPSwitchCompiler compiler{file};
                    if (!compiler.IsValid())
                        continue;

                    auto this_build_id = Common::HexArrayToString(compiler.GetBuildID());
                    this_build_id =
                        this_build_id.substr(0, this_build_id.find_last_not_of('0') + 1);

                    if (build_id == this_build_id)
                        out.push_back(file);
                }
            }
        }
    }

    return out;
}

std::vector<u8> PatchManager::PatchNSO(const std::vector<u8>& nso) const {
    if (nso.size() < 0x100)
        return nso;

    NSOBuildHeader header;
    std::memcpy(&header, nso.data(), sizeof(NSOBuildHeader));

    if (header.magic != Common::MakeMagic('N', 'S', 'O', '0'))
        return nso;

    const auto build_id_raw = Common::HexArrayToString(header.build_id);
    const auto build_id = build_id_raw.substr(0, build_id_raw.find_last_not_of('0') + 1);

    LOG_INFO(Loader, "Patching NSO for build_id={}", build_id);

    const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
    auto patch_dirs = load_dir->GetSubdirectories();
    std::sort(patch_dirs.begin(), patch_dirs.end(),
              [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
    const auto patches = CollectPatches(patch_dirs, build_id);

    auto out = nso;
    for (const auto& patch_file : patches) {
        if (patch_file->GetExtension() == "ips") {
            LOG_INFO(Loader, "    - Applying IPS patch from mod \"{}\"",
                     patch_file->GetContainingDirectory()->GetParentDirectory()->GetName());
            const auto patched = PatchIPS(std::make_shared<VectorVfsFile>(out), patch_file);
            if (patched != nullptr)
                out = patched->ReadAllBytes();
        } else if (patch_file->GetExtension() == "pchtxt") {
            LOG_INFO(Loader, "    - Applying IPSwitch patch from mod \"{}\"",
                     patch_file->GetContainingDirectory()->GetParentDirectory()->GetName());
            const IPSwitchCompiler compiler{patch_file};
            const auto patched = compiler.Apply(std::make_shared<VectorVfsFile>(out));
            if (patched != nullptr)
                out = patched->ReadAllBytes();
        }
    }

    if (out.size() < 0x100)
        return nso;
    std::memcpy(out.data(), &header, sizeof(NSOBuildHeader));
    return out;
}

bool PatchManager::HasNSOPatch(const std::array<u8, 32>& build_id_) const {
    const auto build_id_raw = Common::HexArrayToString(build_id_);
    const auto build_id = build_id_raw.substr(0, build_id_raw.find_last_not_of('0') + 1);

    LOG_INFO(Loader, "Querying NSO patch existence for build_id={}", build_id);

    const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
    auto patch_dirs = load_dir->GetSubdirectories();
    std::sort(patch_dirs.begin(), patch_dirs.end(),
              [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });

    return !CollectPatches(patch_dirs, build_id).empty();
}

static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType type) {
    const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
    if (type != ContentRecordType::Program || load_dir == nullptr || load_dir->GetSize() <= 0) {
        return;
    }

    auto extracted = ExtractRomFS(romfs);
    if (extracted == nullptr) {
        return;
    }

    auto patch_dirs = load_dir->GetSubdirectories();
    std::sort(patch_dirs.begin(), patch_dirs.end(),
              [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });

    std::vector<VirtualDir> layers;
    std::vector<VirtualDir> layers_ext;
    layers.reserve(patch_dirs.size() + 1);
    layers_ext.reserve(patch_dirs.size() + 1);
    for (const auto& subdir : patch_dirs) {
        auto romfs_dir = subdir->GetSubdirectory("romfs");
        if (romfs_dir != nullptr)
            layers.push_back(std::move(romfs_dir));

        auto ext_dir = subdir->GetSubdirectory("romfs_ext");
        if (ext_dir != nullptr)
            layers_ext.push_back(std::move(ext_dir));
    }
    layers.push_back(std::move(extracted));

    auto layered = LayeredVfsDirectory::MakeLayeredDirectory(std::move(layers));
    if (layered == nullptr) {
        return;
    }

    auto layered_ext = LayeredVfsDirectory::MakeLayeredDirectory(std::move(layers_ext));

    auto packed = CreateRomFS(std::move(layered), std::move(layered_ext));
    if (packed == nullptr) {
        return;
    }

    LOG_INFO(Loader, "    RomFS: LayeredFS patches applied successfully");
    romfs = std::move(packed);
}

VirtualFile PatchManager::PatchRomFS(VirtualFile romfs, u64 ivfc_offset, ContentRecordType type,
                                     VirtualFile update_raw) const {
    LOG_INFO(Loader, "Patching RomFS for title_id={:016X}, type={:02X}", title_id,
             static_cast<u8>(type));

    if (romfs == nullptr)
        return romfs;

    const auto installed = Service::FileSystem::GetUnionContents();

    // Game Updates
    const auto update_tid = GetUpdateTitleID(title_id);
    const auto update = installed->GetEntryRaw(update_tid, type);
    if (update != nullptr) {
        const auto new_nca = std::make_shared<NCA>(update, romfs, ivfc_offset);
        if (new_nca->GetStatus() == Loader::ResultStatus::Success &&
            new_nca->GetRomFS() != nullptr) {
            LOG_INFO(Loader, "    RomFS: Update ({}) applied successfully",
                     FormatTitleVersion(installed->GetEntryVersion(update_tid).get_value_or(0)));
            romfs = new_nca->GetRomFS();
        }
    } else if (update_raw != nullptr) {
        const auto new_nca = std::make_shared<NCA>(update_raw, romfs, ivfc_offset);
        if (new_nca->GetStatus() == Loader::ResultStatus::Success &&
            new_nca->GetRomFS() != nullptr) {
            LOG_INFO(Loader, "    RomFS: Update (PACKED) applied successfully");
            romfs = new_nca->GetRomFS();
        }
    }

    // LayeredFS
    ApplyLayeredFS(romfs, title_id, type);

    return romfs;
}

static void AppendCommaIfNotEmpty(std::string& to, const std::string& with) {
    if (to.empty())
        to += with;
    else
        to += ", " + with;
}

static bool IsDirValidAndNonEmpty(const VirtualDir& dir) {
    return dir != nullptr && (!dir->GetFiles().empty() || !dir->GetSubdirectories().empty());
}

std::map<std::string, std::string, std::less<>> PatchManager::GetPatchVersionNames(
    VirtualFile update_raw) const {
    std::map<std::string, std::string, std::less<>> out;
    const auto installed = Service::FileSystem::GetUnionContents();

    // Game Updates
    const auto update_tid = GetUpdateTitleID(title_id);
    PatchManager update{update_tid};
    auto [nacp, discard_icon_file] = update.GetControlMetadata();

    if (nacp != nullptr) {
        out.insert_or_assign("Update", nacp->GetVersionString());
    } else {
        if (installed->HasEntry(update_tid, ContentRecordType::Program)) {
            const auto meta_ver = installed->GetEntryVersion(update_tid);
            if (meta_ver == boost::none || meta_ver.get() == 0) {
                out.insert_or_assign("Update", "");
            } else {
                out.insert_or_assign(
                    "Update",
                    FormatTitleVersion(meta_ver.get(), TitleVersionFormat::ThreeElements));
            }
        } else if (update_raw != nullptr) {
            out.insert_or_assign("Update", "PACKED");
        }
    }

    // General Mods (LayeredFS and IPS)
    const auto mod_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
    if (mod_dir != nullptr && mod_dir->GetSize() > 0) {
        for (const auto& mod : mod_dir->GetSubdirectories()) {
            std::string types;

            const auto exefs_dir = mod->GetSubdirectory("exefs");
            if (IsDirValidAndNonEmpty(exefs_dir)) {
                bool ips = false;
                bool ipswitch = false;

                for (const auto& file : exefs_dir->GetFiles()) {
                    if (file->GetExtension() == "ips")
                        ips = true;
                    else if (file->GetExtension() == "pchtxt")
                        ipswitch = true;
                }

                if (ips)
                    AppendCommaIfNotEmpty(types, "IPS");
                if (ipswitch)
                    AppendCommaIfNotEmpty(types, "IPSwitch");
            }
            if (IsDirValidAndNonEmpty(mod->GetSubdirectory("romfs")))
                AppendCommaIfNotEmpty(types, "LayeredFS");

            if (types.empty())
                continue;

            out.insert_or_assign(mod->GetName(), types);
        }
    }

    // DLC
    const auto dlc_entries = installed->ListEntriesFilter(TitleType::AOC, ContentRecordType::Data);
    std::vector<RegisteredCacheEntry> dlc_match;
    dlc_match.reserve(dlc_entries.size());
    std::copy_if(dlc_entries.begin(), dlc_entries.end(), std::back_inserter(dlc_match),
                 [this, &installed](const RegisteredCacheEntry& entry) {
                     return (entry.title_id & DLC_BASE_TITLE_ID_MASK) == title_id &&
                            installed->GetEntry(entry)->GetStatus() ==
                                Loader::ResultStatus::Success;
                 });
    if (!dlc_match.empty()) {
        // Ensure sorted so DLC IDs show in order.
        std::sort(dlc_match.begin(), dlc_match.end());

        std::string list;
        for (size_t i = 0; i < dlc_match.size() - 1; ++i)
            list += fmt::format("{}, ", dlc_match[i].title_id & 0x7FF);

        list += fmt::format("{}", dlc_match.back().title_id & 0x7FF);

        out.insert_or_assign("DLC", std::move(list));
    }

    return out;
}

std::pair<std::unique_ptr<NACP>, VirtualFile> PatchManager::GetControlMetadata() const {
    const auto& installed{Service::FileSystem::GetUnionContents()};

    const auto base_control_nca = installed->GetEntry(title_id, ContentRecordType::Control);
    if (base_control_nca == nullptr)
        return {};

    return ParseControlNCA(*base_control_nca);
}

std::pair<std::unique_ptr<NACP>, VirtualFile> PatchManager::ParseControlNCA(const NCA& nca) const {
    const auto base_romfs = nca.GetRomFS();
    if (base_romfs == nullptr)
        return {};

    const auto romfs = PatchRomFS(base_romfs, nca.GetBaseIVFCOffset(), ContentRecordType::Control);
    if (romfs == nullptr)
        return {};

    const auto extracted = ExtractRomFS(romfs);
    if (extracted == nullptr)
        return {};

    auto nacp_file = extracted->GetFile("control.nacp");
    if (nacp_file == nullptr)
        nacp_file = extracted->GetFile("Control.nacp");

    auto nacp = nacp_file == nullptr ? nullptr : std::make_unique<NACP>(nacp_file);

    VirtualFile icon_file;
    for (const auto& language : FileSys::LANGUAGE_NAMES) {
        icon_file = extracted->GetFile("icon_" + std::string(language) + ".dat");
        if (icon_file != nullptr)
            break;
    }

    return {std::move(nacp), icon_file};
}
} // namespace FileSys