summaryrefslogtreecommitdiffstats
path: root/src/core/hle/service/fs/archive.cpp
blob: 37bcec2198eb821319894b90b80427b5ea661a5f (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
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include <memory>
#include <unordered_map>

#include <boost/container/flat_map.hpp>

#include "common/common_types.h"
#include "common/file_util.h"
#include "common/make_unique.h"
#include "common/math_util.h"

#include "core/file_sys/archive_backend.h"
#include "core/file_sys/archive_extsavedata.h"
#include "core/file_sys/archive_romfs.h"
#include "core/file_sys/archive_savedata.h"
#include "core/file_sys/archive_savedatacheck.h"
#include "core/file_sys/archive_sdmc.h"
#include "core/file_sys/directory_backend.h"
#include "core/hle/service/fs/archive.h"
#include "core/hle/result.h"

// Specializes std::hash for ArchiveIdCode, so that we can use it in std::unordered_map.
// Workaroung for libstdc++ bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60970
namespace std {
    template <>
    struct hash<Service::FS::ArchiveIdCode> {
        typedef Service::FS::ArchiveIdCode argument_type;
        typedef std::size_t result_type;

        result_type operator()(const argument_type& id_code) const {
            typedef std::underlying_type<argument_type>::type Type;
            return std::hash<Type>()(static_cast<Type>(id_code));
        }
    };
}

/// TODO(Subv): Confirm length of these strings
const std::string SYSTEM_ID = "00000000000000000000000000000000";
const std::string SDCARD_ID = "00000000000000000000000000000000";

namespace Service {
namespace FS {

// TODO: Verify code
/// Returned when a function is passed an invalid handle.
const ResultCode ERR_INVALID_HANDLE(ErrorDescription::InvalidHandle, ErrorModule::FS,
        ErrorSummary::InvalidArgument, ErrorLevel::Permanent);

// Command to access archive file
enum class FileCommand : u32 {
    Dummy1          = 0x000100C6,
    Control         = 0x040100C4,
    OpenSubFile     = 0x08010100,
    Read            = 0x080200C2,
    Write           = 0x08030102,
    GetSize         = 0x08040000,
    SetSize         = 0x08050080,
    GetAttributes   = 0x08060000,
    SetAttributes   = 0x08070040,
    Close           = 0x08080000,
    Flush           = 0x08090000,
    SetPriority     = 0x080A0040,
    GetPriority     = 0x080B0000,
    OpenLinkFile    = 0x080C0000,
};

// Command to access directory
enum class DirectoryCommand : u32 {
    Dummy1          = 0x000100C6,
    Control         = 0x040100C4,
    Read            = 0x08010042,
    Close           = 0x08020000,
};

ResultVal<bool> File::SyncRequest() {
    u32* cmd_buff = Kernel::GetCommandBuffer();
    FileCommand cmd = static_cast<FileCommand>(cmd_buff[0]);
    switch (cmd) {

        // Read from file...
        case FileCommand::Read:
        {
            u64 offset = cmd_buff[1] | ((u64)cmd_buff[2]) << 32;
            u32 length = cmd_buff[3];
            u32 address = cmd_buff[5];
            LOG_TRACE(Service_FS, "Read %s %s: offset=0x%llx length=%d address=0x%x",
                GetTypeName().c_str(), GetName().c_str(), offset, length, address);
            cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
            break;
        }

        // Write to file...
        case FileCommand::Write:
        {
            u64 offset = cmd_buff[1] | ((u64)cmd_buff[2]) << 32;
            u32 length = cmd_buff[3];
            u32 flush = cmd_buff[4];
            u32 address = cmd_buff[6];
            LOG_TRACE(Service_FS, "Write %s %s: offset=0x%llx length=%d address=0x%x, flush=0x%x",
                GetTypeName().c_str(), GetName().c_str(), offset, length, address, flush);
            cmd_buff[2] = backend->Write(offset, length, flush, Memory::GetPointer(address));
            break;
        }

        case FileCommand::GetSize:
        {
            LOG_TRACE(Service_FS, "GetSize %s %s", GetTypeName().c_str(), GetName().c_str());
            u64 size = backend->GetSize();
            cmd_buff[2] = (u32)size;
            cmd_buff[3] = size >> 32;
            break;
        }

        case FileCommand::SetSize:
        {
            u64 size = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
            LOG_TRACE(Service_FS, "SetSize %s %s size=%llu",
                GetTypeName().c_str(), GetName().c_str(), size);
            backend->SetSize(size);
            break;
        }

        case FileCommand::Close:
        {
            LOG_TRACE(Service_FS, "Close %s %s", GetTypeName().c_str(), GetName().c_str());
            backend->Close();
            break;
        }

        case FileCommand::Flush:
        {
            LOG_TRACE(Service_FS, "Flush");
            backend->Flush();
            break;
        }

        case FileCommand::OpenLinkFile:
        {
            LOG_WARNING(Service_FS, "(STUBBED) File command OpenLinkFile %s", GetName().c_str());
            cmd_buff[3] = Kernel::g_handle_table.Create(this).ValueOr(INVALID_HANDLE);
            break;
        }

        case FileCommand::SetPriority:
        {
            priority = cmd_buff[1];
            LOG_TRACE(Service_FS, "SetPriority %u", priority);
            break;
        }

        case FileCommand::GetPriority:
        {
            cmd_buff[2] = priority;
            LOG_TRACE(Service_FS, "GetPriority");
            break;
        }

        // Unknown command...
        default:
            LOG_ERROR(Service_FS, "Unknown command=0x%08X!", cmd);
            ResultCode error = UnimplementedFunction(ErrorModule::FS);
            cmd_buff[1] = error.raw; // TODO(Link Mauve): use the correct error code for that.
            return error;
    }
    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
    return MakeResult<bool>(false);
}

ResultVal<bool> Directory::SyncRequest() {
    u32* cmd_buff = Kernel::GetCommandBuffer();
    DirectoryCommand cmd = static_cast<DirectoryCommand>(cmd_buff[0]);
    switch (cmd) {

        // Read from directory...
        case DirectoryCommand::Read:
        {
            u32 count = cmd_buff[1];
            u32 address = cmd_buff[3];
            auto entries = reinterpret_cast<FileSys::Entry*>(Memory::GetPointer(address));
            LOG_TRACE(Service_FS, "Read %s %s: count=%d",
                GetTypeName().c_str(), GetName().c_str(), count);

            // Number of entries actually read
            cmd_buff[2] = backend->Read(count, entries);
            break;
        }

        case DirectoryCommand::Close:
        {
            LOG_TRACE(Service_FS, "Close %s %s", GetTypeName().c_str(), GetName().c_str());
            backend->Close();
            break;
        }

        // Unknown command...
        default:
            LOG_ERROR(Service_FS, "Unknown command=0x%08X!", cmd);
            ResultCode error = UnimplementedFunction(ErrorModule::FS);
            cmd_buff[1] = error.raw; // TODO(Link Mauve): use the correct error code for that.
            return MakeResult<bool>(false);
    }
    cmd_buff[1] = RESULT_SUCCESS.raw; // No error
    return MakeResult<bool>(false);
}

////////////////////////////////////////////////////////////////////////////////////////////////////

using FileSys::ArchiveBackend;
using FileSys::ArchiveFactory;

/**
 * Map of registered archives, identified by id code. Once an archive is registered here, it is
 * never removed until the FS service is shut down.
 */
static boost::container::flat_map<ArchiveIdCode, std::unique_ptr<ArchiveFactory>> id_code_map;

/**
 * Map of active archive handles. Values are pointers to the archives in `idcode_map`.
 */
static std::unordered_map<ArchiveHandle, std::unique_ptr<ArchiveBackend>> handle_map;
static ArchiveHandle next_handle;

static ArchiveBackend* GetArchive(ArchiveHandle handle) {
    auto itr = handle_map.find(handle);
    return (itr == handle_map.end()) ? nullptr : itr->second.get();
}

ResultVal<ArchiveHandle> OpenArchive(ArchiveIdCode id_code, FileSys::Path& archive_path) {
    LOG_TRACE(Service_FS, "Opening archive with id code 0x%08X", id_code);

    auto itr = id_code_map.find(id_code);
    if (itr == id_code_map.end()) {
        // TODO: Verify error against hardware
        return ResultCode(ErrorDescription::NotFound, ErrorModule::FS,
                          ErrorSummary::NotFound, ErrorLevel::Permanent);
    }

    CASCADE_RESULT(std::unique_ptr<ArchiveBackend> res, itr->second->Open(archive_path));

    // This should never even happen in the first place with 64-bit handles, 
    while (handle_map.count(next_handle) != 0) {
        ++next_handle;
    }
    handle_map.emplace(next_handle, std::move(res));
    return MakeResult<ArchiveHandle>(next_handle++);
}

ResultCode CloseArchive(ArchiveHandle handle) {
    if (handle_map.erase(handle) == 0)
        return ERR_INVALID_HANDLE;
    else
        return RESULT_SUCCESS;
}

// TODO(yuriks): This might be what the fs:REG service is for. See the Register/Unregister calls in
// http://3dbrew.org/wiki/Filesystem_services#ProgramRegistry_service_.22fs:REG.22
ResultCode RegisterArchiveType(std::unique_ptr<FileSys::ArchiveFactory>&& factory, ArchiveIdCode id_code) {
    auto result = id_code_map.emplace(id_code, std::move(factory));

    bool inserted = result.second;
    ASSERT_MSG(inserted, "Tried to register more than one archive with same id code");

    auto& archive = result.first->second;
    LOG_DEBUG(Service_FS, "Registered archive %s with id code 0x%08X", archive->GetName().c_str(), id_code);
    return RESULT_SUCCESS;
}

ResultVal<Kernel::SharedPtr<File>> OpenFileFromArchive(ArchiveHandle archive_handle,
        const FileSys::Path& path, const FileSys::Mode mode) {
    ArchiveBackend* archive = GetArchive(archive_handle);
    if (archive == nullptr)
        return ERR_INVALID_HANDLE;

    std::unique_ptr<FileSys::FileBackend> backend = archive->OpenFile(path, mode);
    if (backend == nullptr) {
        return ResultCode(ErrorDescription::FS_NotFound, ErrorModule::FS,
                          ErrorSummary::NotFound, ErrorLevel::Status);
    }

    auto file = Kernel::SharedPtr<File>(new File(std::move(backend), path));
    return MakeResult<Kernel::SharedPtr<File>>(std::move(file));
}

ResultCode DeleteFileFromArchive(ArchiveHandle archive_handle, const FileSys::Path& path) {
    ArchiveBackend* archive = GetArchive(archive_handle);
    if (archive == nullptr)
        return ERR_INVALID_HANDLE;

    if (archive->DeleteFile(path))
        return RESULT_SUCCESS;
    return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
                      ErrorSummary::Canceled, ErrorLevel::Status);
}

ResultCode RenameFileBetweenArchives(ArchiveHandle src_archive_handle, const FileSys::Path& src_path,
                                     ArchiveHandle dest_archive_handle, const FileSys::Path& dest_path) {
    ArchiveBackend* src_archive = GetArchive(src_archive_handle);
    ArchiveBackend* dest_archive = GetArchive(dest_archive_handle);
    if (src_archive == nullptr || dest_archive == nullptr)
        return ERR_INVALID_HANDLE;

    if (src_archive == dest_archive) {
        if (src_archive->RenameFile(src_path, dest_path))
            return RESULT_SUCCESS;
    } else {
        // TODO: Implement renaming across archives
        return UnimplementedFunction(ErrorModule::FS);
    }

    // TODO(yuriks): This code probably isn't right, it'll return a Status even if the file didn't
    // exist or similar. Verify.
    return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
                      ErrorSummary::NothingHappened, ErrorLevel::Status);
}

ResultCode DeleteDirectoryFromArchive(ArchiveHandle archive_handle, const FileSys::Path& path) {
    ArchiveBackend* archive = GetArchive(archive_handle);
    if (archive == nullptr)
        return ERR_INVALID_HANDLE;

    if (archive->DeleteDirectory(path))
        return RESULT_SUCCESS;
    return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
                      ErrorSummary::Canceled, ErrorLevel::Status);
}

ResultCode CreateFileInArchive(ArchiveHandle archive_handle, const FileSys::Path& path, u32 file_size) {
    ArchiveBackend* archive = GetArchive(archive_handle);
    if (archive == nullptr)
        return ERR_INVALID_HANDLE;

    return archive->CreateFile(path, file_size);
}

ResultCode CreateDirectoryFromArchive(ArchiveHandle archive_handle, const FileSys::Path& path) {
    ArchiveBackend* archive = GetArchive(archive_handle);
    if (archive == nullptr)
        return ERR_INVALID_HANDLE;

    if (archive->CreateDirectory(path))
        return RESULT_SUCCESS;
    return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
                      ErrorSummary::Canceled, ErrorLevel::Status);
}

ResultCode RenameDirectoryBetweenArchives(ArchiveHandle src_archive_handle, const FileSys::Path& src_path,
                                          ArchiveHandle dest_archive_handle, const FileSys::Path& dest_path) {
    ArchiveBackend* src_archive = GetArchive(src_archive_handle);
    ArchiveBackend* dest_archive = GetArchive(dest_archive_handle);
    if (src_archive == nullptr || dest_archive == nullptr)
        return ERR_INVALID_HANDLE;

    if (src_archive == dest_archive) {
        if (src_archive->RenameDirectory(src_path, dest_path))
            return RESULT_SUCCESS;
    } else {
        // TODO: Implement renaming across archives
        return UnimplementedFunction(ErrorModule::FS);
    }

    // TODO(yuriks): This code probably isn't right, it'll return a Status even if the file didn't
    // exist or similar. Verify.
    return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
                      ErrorSummary::NothingHappened, ErrorLevel::Status);
}

ResultVal<Kernel::SharedPtr<Directory>> OpenDirectoryFromArchive(ArchiveHandle archive_handle,
        const FileSys::Path& path) {
    ArchiveBackend* archive = GetArchive(archive_handle);
    if (archive == nullptr)
        return ERR_INVALID_HANDLE;

    std::unique_ptr<FileSys::DirectoryBackend> backend = archive->OpenDirectory(path);
    if (backend == nullptr) {
        return ResultCode(ErrorDescription::NotFound, ErrorModule::FS,
                          ErrorSummary::NotFound, ErrorLevel::Permanent);
    }

    auto directory = Kernel::SharedPtr<Directory>(new Directory(std::move(backend), path));
    return MakeResult<Kernel::SharedPtr<Directory>>(std::move(directory));
}

ResultCode FormatArchive(ArchiveIdCode id_code, const FileSys::Path& path) {
    auto archive_itr = id_code_map.find(id_code);
    if (archive_itr == id_code_map.end()) {
        return UnimplementedFunction(ErrorModule::FS); // TODO(Subv): Find the right error
    }

    return archive_itr->second->Format(path);
}

ResultCode CreateExtSaveData(u32 high, u32 low) {
    // Construct the binary path to the archive first
    std::vector<u8> binary_path;
    binary_path.reserve(12);
    // The first word is all zero to specify a NAND archive
    for (unsigned i = 0; i < 4; ++i)
        binary_path.push_back(0);
    // Next is the low word
    for (unsigned i = 0; i < 4; ++i)
        binary_path.push_back((low >> (8 * i)) & 0xFF);
    // Next is the high word
    for (unsigned i = 0; i < 4; ++i)
        binary_path.push_back((high >> i) & 0xFF);
    FileSys::Path path(binary_path);
    std::string nand_directory = FileUtil::GetUserPath(D_NAND_IDX);
    std::string base_path = FileSys::GetExtDataContainerPath(nand_directory, true);
    std::string extsavedata_path = FileSys::GetExtSaveDataPath(base_path, path);
    if (!FileUtil::CreateFullPath(extsavedata_path))
        return ResultCode(-1); // TODO(Subv): Find the right error code
    return RESULT_SUCCESS;
}

/// Initialize archives
void ArchiveInit() {
    next_handle = 1;

    // TODO(Subv): Add the other archive types (see here for the known types:
    // http://3dbrew.org/wiki/FS:OpenArchive#Archive_idcodes).

    std::string sdmc_directory = FileUtil::GetUserPath(D_SDMC_IDX);
    std::string nand_directory = FileUtil::GetUserPath(D_NAND_IDX);
    auto sdmc_factory = Common::make_unique<FileSys::ArchiveFactory_SDMC>(sdmc_directory);
    if (sdmc_factory->Initialize())
        RegisterArchiveType(std::move(sdmc_factory), ArchiveIdCode::SDMC);
    else
        LOG_ERROR(Service_FS, "Can't instantiate SDMC archive with path %s", sdmc_directory.c_str());
    
    // Create the SaveData archive
    auto savedata_factory = Common::make_unique<FileSys::ArchiveFactory_SaveData>(sdmc_directory);
    RegisterArchiveType(std::move(savedata_factory), ArchiveIdCode::SaveData);

    auto extsavedata_factory = Common::make_unique<FileSys::ArchiveFactory_ExtSaveData>(sdmc_directory, false);
    if (extsavedata_factory->Initialize())
        RegisterArchiveType(std::move(extsavedata_factory), ArchiveIdCode::ExtSaveData);
    else
        LOG_ERROR(Service_FS, "Can't instantiate ExtSaveData archive with path %s", extsavedata_factory->GetMountPoint().c_str());

    auto sharedextsavedata_factory = Common::make_unique<FileSys::ArchiveFactory_ExtSaveData>(nand_directory, true);
    if (sharedextsavedata_factory->Initialize())
        RegisterArchiveType(std::move(sharedextsavedata_factory), ArchiveIdCode::SharedExtSaveData);
    else
        LOG_ERROR(Service_FS, "Can't instantiate SharedExtSaveData archive with path %s", 
            sharedextsavedata_factory->GetMountPoint().c_str());

    // Create the SaveDataCheck archive, basically a small variation of the RomFS archive
    auto savedatacheck_factory = Common::make_unique<FileSys::ArchiveFactory_SaveDataCheck>(nand_directory);
    RegisterArchiveType(std::move(savedatacheck_factory), ArchiveIdCode::SaveDataCheck);
}

/// Shutdown archives
void ArchiveShutdown() {
    handle_map.clear();
    id_code_map.clear();
}

} // namespace FS
} // namespace Service