/
SavedataParam.cpp
1937 lines (1683 loc) · 59.1 KB
/
SavedataParam.cpp
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
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include "Common/Log.h"
#include "Common/Data/Text/I18n.h"
#include "Common/Data/Format/ZIMLoad.h"
#include "Common/Serialize/Serializer.h"
#include "Common/Serialize/SerializeFuncs.h"
#include "Common/StringUtils.h"
#include "Core/Config.h"
#include "Core/Host.h"
#include "Core/Reporting.h"
#include "Core/System.h"
#include "Core/Debugger/MemBlockInfo.h"
#include "Core/Dialog/SavedataParam.h"
#include "Core/Dialog/PSPSaveDialog.h"
#include "Core/FileSystems/MetaFileSystem.h"
#include "Core/HLE/sceIo.h"
#include "Core/HLE/sceKernelMemory.h"
#include "Core/HLE/sceChnnlsv.h"
#include "Core/ELF/ParamSFO.h"
#include "Core/HW/MemoryStick.h"
#include "Core/Util/PPGeDraw.h"
#include <algorithm>
static const std::string ICON0_FILENAME = "ICON0.PNG";
static const std::string ICON1_FILENAME = "ICON1.PMF";
static const std::string PIC1_FILENAME = "PIC1.PNG";
static const std::string SND0_FILENAME = "SND0.AT3";
static const std::string SFO_FILENAME = "PARAM.SFO";
static const std::string savePath = "ms0:/PSP/SAVEDATA/";
namespace
{
int getSizeNormalized(int size)
{
int sizeCluster = (int)MemoryStick_SectorSize();
return ((int)((size + sizeCluster - 1) / sizeCluster)) * sizeCluster;
}
void SetStringFromSFO(ParamSFOData &sfoFile, const char *name, char *str, int strLength)
{
std::string value = sfoFile.GetValueString(name);
truncate_cpy(str, strLength, value.c_str());
}
bool ReadPSPFile(std::string filename, u8 **data, s64 dataSize, s64 *readSize)
{
int handle = pspFileSystem.OpenFile(filename, FILEACCESS_READ);
if (handle < 0)
return false;
if(dataSize == -1)
{
dataSize = pspFileSystem.GetFileInfo(filename).size;
*data = new u8[(size_t)dataSize];
}
size_t result = pspFileSystem.ReadFile(handle, *data, dataSize);
pspFileSystem.CloseFile(handle);
if(readSize)
*readSize = result;
return result != 0;
}
bool WritePSPFile(std::string filename, u8 *data, SceSize dataSize)
{
int handle = pspFileSystem.OpenFile(filename, (FileAccess)(FILEACCESS_WRITE | FILEACCESS_CREATE | FILEACCESS_TRUNCATE));
if (handle < 0)
return false;
size_t result = pspFileSystem.WriteFile(handle, data, dataSize);
pspFileSystem.CloseFile(handle);
return result == dataSize;
}
bool PSPMatch(std::string text, std::string regexp)
{
if(text.empty() && regexp.empty())
return true;
else if(regexp == "*")
return true;
else if(text.empty())
return false;
else if(regexp.empty())
return false;
else if(regexp == "?" && text.length() == 1)
return true;
else if(text == regexp)
return true;
else if(regexp.data()[0] == '*')
{
bool res = PSPMatch(text.substr(1),regexp.substr(1));
if(!res)
res = PSPMatch(text.substr(1),regexp);
return res;
}
else if(regexp.data()[0] == '?')
{
return PSPMatch(text.substr(1),regexp.substr(1));
}
else if(regexp.data()[0] == text.data()[0])
{
return PSPMatch(text.substr(1),regexp.substr(1));
}
return false;
}
int align16(int address)
{
return ((address + 0xF) >> 4) << 4;
}
int GetSDKMainVersion(int sdkVersion)
{
if(sdkVersion > 0x0307FFFF)
return 6;
if(sdkVersion > 0x0300FFFF)
return 5;
if(sdkVersion > 0x0206FFFF)
return 4;
if(sdkVersion > 0x0205FFFF)
return 3;
if(sdkVersion >= 0x02000000)
return 2;
if(sdkVersion >= 0x01000000)
return 1;
return 0;
};
}
void SaveFileInfo::DoState(PointerWrap &p)
{
auto s = p.Section("SaveFileInfo", 1, 2);
if (!s)
return;
Do(p, size);
Do(p, saveName);
Do(p, idx);
DoArray(p, title, sizeof(title));
DoArray(p, saveTitle, sizeof(saveTitle));
DoArray(p, saveDetail, sizeof(saveDetail));
Do(p, modif_time);
if (s <= 1) {
u32 textureData;
int textureWidth;
int textureHeight;
Do(p, textureData);
Do(p, textureWidth);
Do(p, textureHeight);
if (textureData != 0) {
// Must be MODE_READ.
texture = new PPGeImage("");
texture->CompatLoad(textureData, textureWidth, textureHeight);
}
} else {
bool hasTexture = texture != NULL;
Do(p, hasTexture);
if (hasTexture) {
if (p.mode == p.MODE_READ) {
delete texture;
texture = new PPGeImage("");
}
texture->DoState(p);
}
}
}
SavedataParam::SavedataParam()
: pspParam(0)
, selectedSave(0)
, saveDataList(0)
, noSaveIcon(0)
, saveDataListCount(0)
, saveNameListDataCount(0)
{
}
void SavedataParam::Init()
{
if (!pspFileSystem.GetFileInfo(savePath).exists)
{
pspFileSystem.MkDir(savePath);
}
// Create a nomedia file to hide save icons form Android image viewer
#if PPSSPP_PLATFORM(ANDROID)
int handle = pspFileSystem.OpenFile(savePath + ".nomedia", (FileAccess)(FILEACCESS_CREATE | FILEACCESS_WRITE), 0);
if (handle >= 0) {
pspFileSystem.CloseFile(handle);
} else {
INFO_LOG(IO, "Failed to create .nomedia file (might be ok if it already exists)");
}
#endif
}
std::string SavedataParam::GetSaveDirName(const SceUtilitySavedataParam *param, int saveId) const
{
if (!param) {
return "";
}
if (saveId >= 0 && saveNameListDataCount > 0) // if user selection, use it
return GetFilename(saveId);
else
return GetSaveName(param);
}
std::string SavedataParam::GetSaveDir(const SceUtilitySavedataParam *param, const std::string &saveDirName) const
{
if (!param) {
return "";
}
return GetGameName(param) + saveDirName;
}
std::string SavedataParam::GetSaveDir(const SceUtilitySavedataParam *param, int saveId) const
{
return GetSaveDir(param, GetSaveDirName(param, saveId));
}
std::string SavedataParam::GetSaveFilePath(const SceUtilitySavedataParam *param, const std::string &saveDir) const
{
if (!param) {
return "";
}
if (!saveDir.size())
return "";
return savePath + saveDir;
}
std::string SavedataParam::GetSaveFilePath(const SceUtilitySavedataParam *param, int saveId) const
{
return GetSaveFilePath(param, GetSaveDir(param, saveId));
}
inline static std::string FixedToString(const char *str, size_t n)
{
if (!str) {
return std::string("");
} else {
return std::string(str, strnlen(str, n));
}
}
std::string SavedataParam::GetGameName(const SceUtilitySavedataParam *param) const
{
return FixedToString(param->gameName, ARRAY_SIZE(param->gameName));
}
std::string SavedataParam::GetSaveName(const SceUtilitySavedataParam *param) const
{
const std::string saveName = FixedToString(param->saveName, ARRAY_SIZE(param->saveName));
if (saveName == "<>")
return "";
return saveName;
}
std::string SavedataParam::GetFileName(const SceUtilitySavedataParam *param) const
{
return FixedToString(param->fileName, ARRAY_SIZE(param->fileName));
}
std::string SavedataParam::GetKey(const SceUtilitySavedataParam *param) const
{
static const char* const lut = "0123456789ABCDEF";
std::string output;
if (HasKey(param))
{
output.reserve(2 * sizeof(param->key));
for (size_t i = 0; i < sizeof(param->key); ++i)
{
const unsigned char c = param->key[i];
output.push_back(lut[c >> 4]);
output.push_back(lut[c & 15]);
}
}
return output;
}
bool SavedataParam::HasKey(const SceUtilitySavedataParam *param) const
{
for (size_t i = 0; i < ARRAY_SIZE(param->key); ++i)
{
if (param->key[i] != 0)
return true;
}
return false;
}
bool SavedataParam::Delete(SceUtilitySavedataParam* param, int saveId) {
if (!param) {
return false;
}
// Sanity check, preventing full delete of savedata/ in MGS PW demo (!)
if (!strlen(param->gameName) && param->mode != SCE_UTILITY_SAVEDATA_TYPE_LISTALLDELETE) {
ERROR_LOG(SCEUTILITY, "Bad param with gameName empty - cannot delete save directory");
return false;
}
std::string dirPath = GetSaveFilePath(param, GetSaveDir(saveId));
if (dirPath.size() == 0) {
ERROR_LOG(SCEUTILITY, "GetSaveFilePath returned empty - cannot delete save directory");
return false;
}
if (!pspFileSystem.GetFileInfo(dirPath).exists) {
return false;
}
pspFileSystem.RmDir(dirPath);
return true;
}
int SavedataParam::DeleteData(SceUtilitySavedataParam* param) {
if (!param) {
return SCE_UTILITY_SAVEDATA_ERROR_RW_FILE_NOT_FOUND;
}
std::string subFolder = GetGameName(param) + GetSaveName(param);
std::string fileName = GetFileName(param);
std::string dirPath = savePath + subFolder;
std::string filePath = dirPath + "/" + fileName;
std::string sfoPath = dirPath + "/" + SFO_FILENAME;
if (!pspFileSystem.GetFileInfo(dirPath).exists) {
return SCE_UTILITY_SAVEDATA_ERROR_RW_NO_DATA;
}
if (!pspFileSystem.GetFileInfo(sfoPath).exists)
return SCE_UTILITY_SAVEDATA_ERROR_RW_DATA_BROKEN;
if (fileName != "" && !pspFileSystem.GetFileInfo(filePath).exists) {
return SCE_UTILITY_SAVEDATA_ERROR_RW_FILE_NOT_FOUND;
}
if (fileName == "") {
return 0;
}
if (!subFolder.size()) {
ERROR_LOG(SCEUTILITY, "Bad subfolder, ignoring delete of %s", filePath.c_str());
return 0;
}
pspFileSystem.RemoveFile(filePath);
return 0;
}
int SavedataParam::Save(SceUtilitySavedataParam* param, const std::string &saveDirName, bool secureMode) {
if (!param) {
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_MS_NOSPACE;
}
if (param->dataSize > param->dataBufSize) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata buffer overflow: %d / %d", param->dataSize, param->dataBufSize);
return SCE_UTILITY_SAVEDATA_ERROR_RW_BAD_PARAMS;
}
auto validateSize = [](const PspUtilitySavedataFileData &data) {
if (data.buf.IsValid() && data.bufSize < data.size) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata subdata buffer overflow: %d / %d", data.size, data.bufSize);
return false;
}
return true;
};
if (!validateSize(param->icon0FileData) || !validateSize(param->icon1FileData) || !validateSize(param->pic1FileData) || !validateSize(param->snd0FileData)) {
return SCE_UTILITY_SAVEDATA_ERROR_RW_BAD_PARAMS;
}
if (param->secureVersion > 3) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata version requested on save: %d", param->secureVersion);
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_PARAM;
} else if (param->secureVersion != 0) {
if (param->secureVersion != 1 && !HasKey(param)) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata version with missing key on save: %d", param->secureVersion);
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_PARAM;
}
WARN_LOG_REPORT(SCEUTILITY, "Savedata version requested on save: %d", param->secureVersion);
}
std::string dirPath = GetSaveFilePath(param, GetSaveDir(param, saveDirName));
if (!pspFileSystem.GetFileInfo(dirPath).exists) {
if (!pspFileSystem.MkDir(dirPath)) {
auto err = GetI18NCategory("Error");
host->NotifyUserMessage(err->T("Unable to write savedata, disk may be full"));
}
}
u8* cryptedData = 0;
int cryptedSize = 0;
u8 cryptedHash[0x10]{};
// Encrypt save.
// TODO: Is this the correct difference between MAKEDATA and MAKEDATASECURE?
if (param->dataBuf.IsValid() && g_Config.bEncryptSave && secureMode)
{
cryptedSize = param->dataSize;
if(cryptedSize == 0 || (SceSize)cryptedSize > param->dataBufSize)
cryptedSize = param->dataBufSize; // fallback, should never use this
u8 *data_ = param->dataBuf;
int aligned_len = align16(cryptedSize);
cryptedData = new u8[aligned_len + 0x10];
memcpy(cryptedData, data_, cryptedSize);
int decryptMode = DetermineCryptMode(param);
bool hasKey = decryptMode > 1;
if (hasKey && !HasKey(param)) {
delete[] cryptedData;
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_PARAM;
}
if (EncryptData(decryptMode, cryptedData, &cryptedSize, &aligned_len, cryptedHash, (hasKey ? param->key : 0)) != 0) {
auto err = GetI18NCategory("Error");
host->NotifyUserMessage(err->T("Save encryption failed. This save won't work on real PSP"), 6.0f);
ERROR_LOG(SCEUTILITY,"Save encryption failed. This save won't work on real PSP");
delete[] cryptedData;
cryptedData = 0;
}
}
// SAVE PARAM.SFO
ParamSFOData sfoFile;
std::string sfopath = dirPath+"/" + SFO_FILENAME;
PSPFileInfo sfoInfo = pspFileSystem.GetFileInfo(sfopath);
if (sfoInfo.exists) // Read old sfo if exist
{
std::vector<u8> sfoData;
if (pspFileSystem.ReadEntireFile(sfopath, sfoData) >= 0)
sfoFile.ReadSFO(sfoData);
}
// Update values
sfoFile.SetValue("TITLE",param->sfoParam.title,128);
sfoFile.SetValue("SAVEDATA_TITLE",param->sfoParam.savedataTitle,128);
sfoFile.SetValue("SAVEDATA_DETAIL",param->sfoParam.detail,1024);
sfoFile.SetValue("PARENTAL_LEVEL",param->sfoParam.parentalLevel,4);
sfoFile.SetValue("CATEGORY","MS",4);
sfoFile.SetValue("SAVEDATA_DIRECTORY", GetSaveDir(param, saveDirName), 64);
// Always write and update the file list.
// For each file, 13 bytes for filename, 16 bytes for file hash (0 in PPSSPP), 3 byte for padding
const int FILE_LIST_COUNT_MAX = 99;
const u32 FILE_LIST_TOTAL_SIZE = sizeof(SaveSFOFileListEntry) * FILE_LIST_COUNT_MAX;
u32 tmpDataSize = 0;
SaveSFOFileListEntry *tmpDataOrig = (SaveSFOFileListEntry *)sfoFile.GetValueData("SAVEDATA_FILE_LIST", &tmpDataSize);
SaveSFOFileListEntry *updatedList = new SaveSFOFileListEntry[FILE_LIST_COUNT_MAX];
if (tmpDataSize != 0)
memcpy(updatedList, tmpDataOrig, std::min(tmpDataSize, FILE_LIST_TOTAL_SIZE));
if (tmpDataSize < FILE_LIST_TOTAL_SIZE)
memset(updatedList + tmpDataSize, 0, FILE_LIST_TOTAL_SIZE - tmpDataSize);
// Leave a hash there and unchanged if it was already there.
if (secureMode && param->dataBuf.IsValid()) {
const std::string saveFilename = GetFileName(param);
for (auto entry = updatedList; entry < updatedList + FILE_LIST_COUNT_MAX; ++entry) {
if (entry->filename[0] != '\0') {
if (strncmp(entry->filename, saveFilename.c_str(), sizeof(entry->filename)) != 0)
continue;
}
snprintf(entry->filename, sizeof(entry->filename), "%s", saveFilename.c_str());
memcpy(entry->hash, cryptedHash, 16);
break;
}
}
sfoFile.SetValue("SAVEDATA_FILE_LIST", (u8 *)updatedList, FILE_LIST_TOTAL_SIZE, (int)FILE_LIST_TOTAL_SIZE);
delete[] updatedList;
// Init param with 0. This will be used to detect crypted save or not on loading
u8 *tmpData = new u8[128];
memset(tmpData, 0, 128);
sfoFile.SetValue("SAVEDATA_PARAMS", tmpData, 128, 128);
delete[] tmpData;
u8 *sfoData;
size_t sfoSize;
sfoFile.WriteSFO(&sfoData,&sfoSize);
// Calc SFO hash for PSP.
if(cryptedData != 0)
{
int offset = sfoFile.GetDataOffset(sfoData,"SAVEDATA_PARAMS");
if(offset >= 0)
UpdateHash(sfoData, (int)sfoSize, offset, DetermineCryptMode(param));
}
WritePSPFile(sfopath, sfoData, (SceSize)sfoSize);
delete[] sfoData;
if(param->dataBuf.IsValid()) // Can launch save without save data in mode 13
{
std::string fileName = GetFileName(param);
std::string filePath = dirPath + "/" + fileName;
u8 *data_ = 0;
SceSize saveSize = 0;
if(cryptedData == 0) // Save decrypted data
{
saveSize = param->dataSize;
if(saveSize == 0 || saveSize > param->dataBufSize)
saveSize = param->dataBufSize; // fallback, should never use this
data_ = param->dataBuf;
}
else
{
data_ = cryptedData;
saveSize = cryptedSize;
}
INFO_LOG(SCEUTILITY,"Saving file with size %u in %s",saveSize,filePath.c_str());
// copy back save name in request
strncpy(param->saveName, saveDirName.c_str(), 20);
if (fileName == "") {
delete[] cryptedData;
} else {
if (!WritePSPFile(filePath, data_, saveSize)) {
ERROR_LOG(SCEUTILITY, "Error writing file %s", filePath.c_str());
delete[] cryptedData;
return SCE_UTILITY_SAVEDATA_ERROR_SAVE_MS_NOSPACE;
}
delete[] cryptedData;
}
}
// SAVE ICON0
if (param->icon0FileData.buf.IsValid())
{
std::string icon0path = dirPath + "/" + ICON0_FILENAME;
WritePSPFile(icon0path, param->icon0FileData.buf, param->icon0FileData.size);
}
// SAVE ICON1
if (param->icon1FileData.buf.IsValid())
{
std::string icon1path = dirPath + "/" + ICON1_FILENAME;
WritePSPFile(icon1path, param->icon1FileData.buf, param->icon1FileData.size);
}
// SAVE PIC1
if (param->pic1FileData.buf.IsValid())
{
std::string pic1path = dirPath + "/" + PIC1_FILENAME;
WritePSPFile(pic1path, param->pic1FileData.buf, param->pic1FileData.size);
}
// Save SND
if (param->snd0FileData.buf.IsValid())
{
std::string snd0path = dirPath + "/" + SND0_FILENAME;
WritePSPFile(snd0path, param->snd0FileData.buf, param->snd0FileData.size);
}
return 0;
}
int SavedataParam::Load(SceUtilitySavedataParam *param, const std::string &saveDirName, int saveId, bool secureMode) {
if (!param) {
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_NO_DATA;
}
bool isRWMode = param->mode == SCE_UTILITY_SAVEDATA_TYPE_READDATA || param->mode == SCE_UTILITY_SAVEDATA_TYPE_READDATASECURE;
std::string dirPath = GetSaveFilePath(param, GetSaveDir(param, saveDirName));
std::string fileName = GetFileName(param);
std::string filePath = dirPath + "/" + fileName;
std::string sfoPath = dirPath + "/" + SFO_FILENAME;
if (!pspFileSystem.GetFileInfo(dirPath).exists) {
return isRWMode ? SCE_UTILITY_SAVEDATA_ERROR_RW_NO_DATA : SCE_UTILITY_SAVEDATA_ERROR_LOAD_NO_DATA;
}
if (!pspFileSystem.GetFileInfo(sfoPath).exists)
return isRWMode ? SCE_UTILITY_SAVEDATA_ERROR_RW_DATA_BROKEN : SCE_UTILITY_SAVEDATA_ERROR_LOAD_DATA_BROKEN;
if (fileName != "" && !pspFileSystem.GetFileInfo(filePath).exists) {
return isRWMode ? SCE_UTILITY_SAVEDATA_ERROR_RW_FILE_NOT_FOUND : SCE_UTILITY_SAVEDATA_ERROR_LOAD_FILE_NOT_FOUND;
}
LoadSFO(param, dirPath); // Load sfo
// Don't know what it is, but PSP always respond this and this unlock some game
param->bind = 1021;
// Load another files,seems these are required by some games, e.g. Fushigi no Dungeon Fuurai no Shiren 4 Plus.
// Load ICON0.PNG
LoadFile(dirPath, ICON0_FILENAME, ¶m->icon0FileData);
// Load ICON1.PNG
LoadFile(dirPath, ICON1_FILENAME, ¶m->icon1FileData);
// Load PIC1.PNG
LoadFile(dirPath, PIC1_FILENAME, ¶m->pic1FileData);
// Load SND0.AT3
LoadFile(dirPath, SND0_FILENAME, ¶m->snd0FileData);
if (fileName == "") {
// Don't load savedata but return success.
return 0;
}
int result = LoadSaveData(param, saveDirName, dirPath, secureMode);
if (result != 0)
return result;
return 0;
}
int SavedataParam::LoadSaveData(SceUtilitySavedataParam *param, const std::string &saveDirName, const std::string &dirPath, bool secureMode) {
if (param->secureVersion > 3) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata version requested: %d", param->secureVersion);
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_PARAM;
} else if (param->secureVersion != 0) {
if (param->secureVersion != 1 && !HasKey(param)) {
ERROR_LOG_REPORT(SCEUTILITY, "Savedata version with missing key: %d", param->secureVersion);
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_PARAM;
}
WARN_LOG_REPORT(SCEUTILITY, "Savedata version requested: %d", param->secureVersion);
}
std::string filename = GetFileName(param);
std::string filePath = dirPath + "/" + filename;
s64 readSize;
INFO_LOG(SCEUTILITY,"Loading file with size %u in %s",param->dataBufSize,filePath.c_str());
u8 *saveData = nullptr;
int saveSize = -1;
if (!ReadPSPFile(filePath, &saveData, saveSize, &readSize)) {
ERROR_LOG(SCEUTILITY,"Error reading file %s",filePath.c_str());
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_NO_DATA;
}
saveSize = (int)readSize;
// copy back save name in request
strncpy(param->saveName, saveDirName.c_str(), 20);
int prevCryptMode = GetSaveCryptMode(param, saveDirName);
bool isCrypted = prevCryptMode != 0 && secureMode;
bool saveDone = false;
u32 loadedSize = 0;
if (isCrypted) {
if (DetermineCryptMode(param) > 1 && !HasKey(param))
return SCE_UTILITY_SAVEDATA_ERROR_LOAD_PARAM;
u8 hash[16];
bool hasExpectedHash = GetExpectedHash(dirPath, filename, hash);
loadedSize = LoadCryptedSave(param, param->dataBuf, saveData, saveSize, prevCryptMode, hasExpectedHash ? hash : nullptr, saveDone);
// TODO: Should return SCE_UTILITY_SAVEDATA_ERROR_LOAD_DATA_BROKEN here if !saveDone.
}
if (!saveDone) {
loadedSize = LoadNotCryptedSave(param, param->dataBuf, saveData, saveSize);
}
param->dataSize = (SceSize)saveSize;
delete[] saveData;
if (loadedSize != 0) {
std::string tag = "LoadSaveData/" + filePath;
NotifyMemInfo(MemBlockFlags::WRITE, param->dataBuf.ptr, loadedSize, tag.c_str(), tag.size());
}
return 0;
}
int SavedataParam::DetermineCryptMode(const SceUtilitySavedataParam *param) const {
int decryptMode = 1;
if (param->secureVersion == 1) {
decryptMode = 1;
} else if (param->secureVersion == 2) {
decryptMode = 3;
} else if (param->secureVersion == 3) {
decryptMode = GetSDKMainVersion(sceKernelGetCompiledSdkVersion()) >= 4 ? 5 : 1;
} else if (HasKey(param)) {
// TODO: This should ignore HasKey(), which would trigger errors. Not doing that yet to play it safe.
decryptMode = GetSDKMainVersion(sceKernelGetCompiledSdkVersion()) >= 4 ? 5 : 3;
}
return decryptMode;
}
u32 SavedataParam::LoadCryptedSave(SceUtilitySavedataParam *param, u8 *data, const u8 *saveData, int &saveSize, int prevCryptMode, const u8 *expectedHash, bool &saveDone) {
int orig_size = saveSize;
int align_len = align16(saveSize);
u8 *data_base = new u8[align_len];
u8 *cryptKey = new u8[0x10];
int decryptMode = DetermineCryptMode(param);
const int detectedMode = decryptMode;
bool hasKey;
auto resetData = [&](int mode) {
saveSize = orig_size;
align_len = align16(saveSize);
hasKey = mode > 1;
if (hasKey) {
memcpy(cryptKey, param->key, 0x10);
}
memcpy(data_base, saveData, saveSize);
memset(data_base + saveSize, 0, align_len - saveSize);
};
resetData(decryptMode);
if (decryptMode != prevCryptMode) {
if (prevCryptMode == 1 && param->key[0] == 0) {
// Backwards compat for a bug we used to have.
WARN_LOG(SCEUTILITY, "Savedata loading with hashmode %d instead of detected %d", prevCryptMode, decryptMode);
decryptMode = prevCryptMode;
// Don't notify the user if we're not going to upgrade the save.
if (!g_Config.bEncryptSave) {
auto di = GetI18NCategory("Dialog");
host->NotifyUserMessage(di->T("When you save, it will load on a PSP, but not an older PPSSPP"), 6.0f);
host->NotifyUserMessage(di->T("Old savedata detected"), 6.0f);
}
} else {
if (decryptMode == 5 && prevCryptMode == 3) {
WARN_LOG(SCEUTILITY, "Savedata loading with detected hashmode %d instead of file's %d", decryptMode, prevCryptMode);
} else {
WARN_LOG_REPORT(SCEUTILITY, "Savedata loading with detected hashmode %d instead of file's %d", decryptMode, prevCryptMode);
}
if (g_Config.bSavedataUpgrade) {
decryptMode = prevCryptMode;
auto di = GetI18NCategory("Dialog");
host->NotifyUserMessage(di->T("When you save, it will not work on outdated PSP Firmware anymore"), 6.0f);
host->NotifyUserMessage(di->T("Old savedata detected"), 6.0f);
}
}
hasKey = decryptMode > 1;
}
int err = DecryptSave(decryptMode, data_base, &saveSize, &align_len, hasKey ? cryptKey : nullptr, expectedHash);
// Perhaps the file had the wrong mode....
if (err != 0 && detectedMode != decryptMode) {
resetData(detectedMode);
err = DecryptSave(detectedMode, data_base, &saveSize, &align_len, hasKey ? cryptKey : nullptr, expectedHash);
}
// TODO: Should return an error, but let's just try with a bad hash.
if (err != 0 && expectedHash != nullptr) {
WARN_LOG(SCEUTILITY, "Incorrect hash on save data, likely corrupt");
resetData(decryptMode);
err = DecryptSave(decryptMode, data_base, &saveSize, &align_len, hasKey ? cryptKey : nullptr, nullptr);
}
u32 sz = 0;
if (err == 0) {
if (param->dataBuf.IsValid()) {
sz = std::min((u32)saveSize, (u32)param->dataBufSize);
memcpy(data, data_base, sz);
}
saveDone = true;
}
delete[] data_base;
delete[] cryptKey;
return sz;
}
u32 SavedataParam::LoadNotCryptedSave(SceUtilitySavedataParam *param, u8 *data, u8 *saveData, int &saveSize) {
if (param->dataBuf.IsValid()) {
u32 sz = std::min((u32)saveSize, (u32)param->dataBufSize);
memcpy(data, saveData, sz);
return sz;
}
return 0;
}
void SavedataParam::LoadSFO(SceUtilitySavedataParam *param, const std::string& dirPath) {
ParamSFOData sfoFile;
std::string sfopath = dirPath+"/" + SFO_FILENAME;
PSPFileInfo sfoInfo = pspFileSystem.GetFileInfo(sfopath);
if (sfoInfo.exists) {
// Read sfo
std::vector<u8> sfoData;
if (pspFileSystem.ReadEntireFile(sfopath, sfoData) >= 0) {
sfoFile.ReadSFO(sfoData);
// copy back info in request
strncpy(param->sfoParam.title,sfoFile.GetValueString("TITLE").c_str(),128);
strncpy(param->sfoParam.savedataTitle,sfoFile.GetValueString("SAVEDATA_TITLE").c_str(),128);
strncpy(param->sfoParam.detail,sfoFile.GetValueString("SAVEDATA_DETAIL").c_str(),1024);
param->sfoParam.parentalLevel = sfoFile.GetValueInt("PARENTAL_LEVEL");
}
}
}
std::vector<SaveSFOFileListEntry> SavedataParam::GetSFOEntries(const std::string &dirPath) {
std::vector<SaveSFOFileListEntry> result;
const std::string sfoPath = dirPath + "/" + SFO_FILENAME;
if (!pspFileSystem.GetFileInfo(sfoPath).exists)
return result;
ParamSFOData sfoFile;
std::vector<u8> sfoData;
if (pspFileSystem.ReadEntireFile(dirPath + "/" + SFO_FILENAME, sfoData) >= 0)
sfoFile.ReadSFO(sfoData);
const int FILE_LIST_COUNT_MAX = 99;
u32 sfoFileListSize = 0;
SaveSFOFileListEntry *sfoFileList = (SaveSFOFileListEntry *)sfoFile.GetValueData("SAVEDATA_FILE_LIST", &sfoFileListSize);
const u32 count = std::min((u32)FILE_LIST_COUNT_MAX, sfoFileListSize / (u32)sizeof(SaveSFOFileListEntry));
for (u32 i = 0; i < count; ++i) {
if (sfoFileList[i].filename[0] != '\0')
result.push_back(sfoFileList[i]);
}
return result;
}
std::set<std::string> SavedataParam::GetSecureFileNames(const std::string &dirPath) {
auto entries = GetSFOEntries(dirPath);
std::set<std::string> secureFileNames;
for (auto entry : entries) {
char temp[14];
truncate_cpy(temp, entry.filename);
secureFileNames.insert(temp);
}
return secureFileNames;
}
bool SavedataParam::GetExpectedHash(const std::string &dirPath, const std::string &filename, u8 hash[16]) {
auto entries = GetSFOEntries(dirPath);
for (auto entry : entries) {
if (strncmp(entry.filename, filename.c_str(), sizeof(entry.filename)) == 0) {
memcpy(hash, entry.hash, sizeof(entry.hash));
return true;
}
}
return false;
}
void SavedataParam::LoadFile(const std::string& dirPath, const std::string& filename, PspUtilitySavedataFileData *fileData) {
std::string filePath = dirPath + "/" + filename;
if (!fileData->buf.IsValid())
return;
u8 *buf = fileData->buf;
u32 size = Memory::ValidSize(fileData->buf.ptr, fileData->bufSize);
s64 readSize = -1;
if (ReadPSPFile(filePath, &buf, size, &readSize)) {
fileData->size = readSize;
const std::string tag = "SavedataLoad/" + filePath;
NotifyMemInfo(MemBlockFlags::WRITE, fileData->buf.ptr, fileData->size, tag.c_str(), tag.size());
}
}
int SavedataParam::EncryptData(unsigned int mode,
unsigned char *data,
int *dataLen,
int *alignedLen,
unsigned char *hash,
unsigned char *cryptkey)
{
pspChnnlsvContext1 ctx1;
pspChnnlsvContext2 ctx2;
/* Make room for the IV in front of the data. */
memmove(data + 0x10, data, *alignedLen);
/* Set up buffers */
memset(&ctx1, 0, sizeof(pspChnnlsvContext1));
memset(&ctx2, 0, sizeof(pspChnnlsvContext2));
memset(hash, 0, 0x10);
memset(data, 0, 0x10);
/* Build the 0x10-byte IV and setup encryption */
if (sceSdCreateList_(ctx2, mode, 1, data, cryptkey) < 0)
return -1;
if (sceSdSetIndex_(ctx1, mode) < 0)
return -2;
if (sceSdRemoveValue_(ctx1, data, 0x10) < 0)
return -3;
if (sceSdSetMember_(ctx2, data + 0x10, *alignedLen) < 0)
return -4;
/* Clear any extra bytes left from the previous steps */
memset(data + 0x10 + *dataLen, 0, *alignedLen - *dataLen);
/* Encrypt the data */
if (sceSdRemoveValue_(ctx1, data + 0x10, *alignedLen) < 0)
return -5;
/* Verify encryption */
if (sceChnnlsv_21BE78B4_(ctx2) < 0)
return -6;
/* Build the file hash from this PSP */
if (sceSdGetLastIndex_(ctx1, hash, cryptkey) < 0)
return -7;
/* Adjust sizes to account for IV */
*alignedLen += 0x10;
*dataLen += 0x10;
/* All done */
return 0;
}
int SavedataParam::DecryptSave(unsigned int mode, unsigned char *data, int *dataLen, int *alignedLen, unsigned char *cryptkey, const u8 *expectedHash) {
pspChnnlsvContext1 ctx1;
pspChnnlsvContext2 ctx2;
/* Need a 16-byte IV plus some data */
if (*alignedLen <= 0x10)
return -1;
*dataLen -= 0x10;
*alignedLen -= 0x10;
/* Set up buffers */
memset(&ctx1, 0, sizeof(pspChnnlsvContext1));
memset(&ctx2, 0, sizeof(pspChnnlsvContext2));
/* Perform the magic */
if (sceSdSetIndex_(ctx1, mode) < 0)
return -2;
if (sceSdCreateList_(ctx2, mode, 2, data, cryptkey) < 0)
return -3;
if (sceSdRemoveValue_(ctx1, data, 0x10) < 0)
return -4;
if (sceSdRemoveValue_(ctx1, data + 0x10, *alignedLen) < 0)
return -5;
if (sceSdSetMember_(ctx2, data + 0x10, *alignedLen) < 0)
return -6;
/* Verify that it decrypted correctly */
if (sceChnnlsv_21BE78B4_(ctx2) < 0)
return -7;
if (expectedHash) {
u8 hash[16];
if (sceSdGetLastIndex_(ctx1, hash, cryptkey) < 0)
return -7;
if (memcmp(hash, expectedHash, sizeof(hash)) != 0)
return -8;
}
/* The decrypted data starts at data + 0x10, so shift it back. */
memmove(data, data + 0x10, *dataLen);
return 0;
}
int SavedataParam::UpdateHash(u8* sfoData, int sfoSize, int sfoDataParamsOffset, int encryptmode)
{
int alignedLen = align16(sfoSize);
memset(sfoData+sfoDataParamsOffset, 0, 128);
u8 filehash[16];
int ret = 0;
int firstHashMode = encryptmode & 2 ? 4 : 2;
int secondHashMode = encryptmode & 2 ? 3 : 0;
if (encryptmode & 4) {
firstHashMode = 6;
secondHashMode = 5;
}
// Compute 11D0 hash over entire file
if ((ret = BuildHash(filehash, sfoData, sfoSize, alignedLen, firstHashMode, 0)) < 0)
{
// Not sure about "2"
return ret - 400;
}
// Copy 11D0 hash to param.sfo and set flag indicating it's there
memcpy(sfoData+sfoDataParamsOffset + 0x20, filehash, 0x10);
*(sfoData+sfoDataParamsOffset) |= 0x01;
// If new encryption mode, compute and insert the 1220 hash.
if (encryptmode & 6)
{
/* Enable the hash bit first */
*(sfoData+sfoDataParamsOffset) |= (encryptmode & 6) << 4;