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
|
/*****************************************************************************/
/* CascRootFile_Ovr.cpp Copyright (c) Ladislav Zezula 2015 */
/*---------------------------------------------------------------------------*/
/* Support for loading Overwatch ROOT file */
/*---------------------------------------------------------------------------*/
/* Date Ver Who Comment */
/* -------- ---- --- ------- */
/* 28.10.15 1.00 Lad The first version of CascRootFile_Ovr.cpp */
/*****************************************************************************/
#define __CASCLIB_SELF__
#include "CascLib.h"
#include "CascCommon.h"
//-----------------------------------------------------------------------------
// Structure definitions for Overwatch root file
typedef struct _CASC_FILE_ENTRY
{
ENCODING_KEY EncodingKey; // Encoding key
ULONGLONG FileNameHash; // File name hash
DWORD dwFileName; // Offset of the file name in the name cache
} CASC_FILE_ENTRY, *PCASC_FILE_ENTRY;
struct TRootHandler_Ovr : public TRootHandler
{
// Linear global list of file entries
DYNAMIC_ARRAY FileTable;
// Linear global list of names
DYNAMIC_ARRAY FileNames;
// Global map of FileName -> FileEntry
PCASC_MAP pRootMap;
};
//-----------------------------------------------------------------------------
// Local functions
static int InsertFileEntry(
TRootHandler_Ovr * pRootHandler,
const char * szFileName,
LPBYTE pbEncodingKey)
{
PCASC_FILE_ENTRY pFileEntry;
size_t nLength = strlen(szFileName);
// Attempt to insert the file name to the global buffer
szFileName = (char *)Array_Insert(&pRootHandler->FileNames, szFileName, nLength + 1);
if(szFileName == NULL)
return ERROR_NOT_ENOUGH_MEMORY;
// Attempt to insert the entry to the array of file entries
pFileEntry = (PCASC_FILE_ENTRY)Array_Insert(&pRootHandler->FileTable, NULL, 1);
if(pFileEntry == NULL)
return ERROR_NOT_ENOUGH_MEMORY;
// Fill the file entry
pFileEntry->EncodingKey = *(PENCODING_KEY)pbEncodingKey;
pFileEntry->FileNameHash = CalcFileNameHash(szFileName);
pFileEntry->dwFileName = Array_IndexOf(&pRootHandler->FileNames, szFileName);
// Insert the file entry to the map
assert(Map_FindObject(pRootHandler->pRootMap, &pFileEntry->FileNameHash, NULL) == NULL);
Map_InsertObject(pRootHandler->pRootMap, pFileEntry, &pFileEntry->FileNameHash);
return ERROR_SUCCESS;
}
//-----------------------------------------------------------------------------
// Implementation of Overwatch root file
static int OvrHandler_Insert(
TRootHandler_Ovr * pRootHandler,
const char * szFileName,
LPBYTE pbEncodingKey)
{
return InsertFileEntry(pRootHandler, szFileName, pbEncodingKey);
}
static LPBYTE OvrHandler_Search(TRootHandler_Ovr * pRootHandler, TCascSearch * pSearch, PDWORD /* PtrFileSize */, PDWORD /* PtrLocaleFlags */)
{
PCASC_FILE_ENTRY pFileEntry;
// Are we still inside the root directory range?
while(pSearch->IndexLevel1 < pRootHandler->FileTable.ItemCount)
{
// Retrieve the file item
pFileEntry = (PCASC_FILE_ENTRY)Array_ItemAt(&pRootHandler->FileTable, pSearch->IndexLevel1);
strcpy(pSearch->szFileName, (char *)Array_ItemAt(&pRootHandler->FileNames, pFileEntry->dwFileName));
// Prepare the pointer to the next search
pSearch->IndexLevel1++;
return pFileEntry->EncodingKey.Value;
}
// No more entries
return NULL;
}
static void OvrHandler_EndSearch(TRootHandler_Ovr * /* pRootHandler */, TCascSearch * /* pSearch */)
{
// Do nothing
}
static LPBYTE OvrHandler_GetKey(TRootHandler_Ovr * pRootHandler, const char * szFileName)
{
ULONGLONG FileNameHash = CalcFileNameHash(szFileName);
return (LPBYTE)Map_FindObject(pRootHandler->pRootMap, &FileNameHash, NULL);
}
static void OvrHandler_Close(TRootHandler_Ovr * pRootHandler)
{
if(pRootHandler != NULL)
{
// Free the file map
if(pRootHandler->pRootMap)
Map_Free(pRootHandler->pRootMap);
pRootHandler->pRootMap = NULL;
// Free the array of the file names and file items
Array_Free(&pRootHandler->FileTable);
Array_Free(&pRootHandler->FileNames);
// Free the root file itself
CASC_FREE(pRootHandler);
}
}
//-----------------------------------------------------------------------------
// Public functions
int RootHandler_CreateOverwatch(TCascStorage * hs, LPBYTE pbRootFile, DWORD cbRootFile)
{
TRootHandler_Ovr * pRootHandler;
ENCODING_KEY KeyBuffer;
QUERY_KEY EncodingKey = {KeyBuffer.Value, MD5_HASH_SIZE};
void * pTextFile;
size_t nLength;
char szOneLine[0x200];
char szFileName[MAX_PATH+1];
DWORD dwFileCountMax = hs->pEncodingMap->TableSize;
int nFileNameIndex;
int nError = ERROR_SUCCESS;
// Allocate the root handler object
hs->pRootHandler = pRootHandler = CASC_ALLOC(TRootHandler_Ovr, 1);
if(pRootHandler == NULL)
return ERROR_NOT_ENOUGH_MEMORY;
// Fill-in the handler functions
memset(pRootHandler, 0, sizeof(TRootHandler_Ovr));
pRootHandler->Insert = (ROOT_INSERT)OvrHandler_Insert;
pRootHandler->Search = (ROOT_SEARCH)OvrHandler_Search;
pRootHandler->EndSearch = (ROOT_ENDSEARCH)OvrHandler_EndSearch;
pRootHandler->GetKey = (ROOT_GETKEY)OvrHandler_GetKey;
pRootHandler->Close = (ROOT_CLOSE)OvrHandler_Close;
// Fill-in the flags
pRootHandler->dwRootFlags |= ROOT_FLAG_HAS_NAMES;
// Allocate the linear array of file entries
nError = Array_Create(&pRootHandler->FileTable, CASC_FILE_ENTRY, 0x10000);
if(nError != ERROR_SUCCESS)
return nError;
// Allocate the buffer for the file names
nError = Array_Create(&pRootHandler->FileNames, char, 0x10000);
if(nError != ERROR_SUCCESS)
return nError;
// Create map of ROOT_ENTRY -> FileEntry
pRootHandler->pRootMap = Map_Create(dwFileCountMax, sizeof(ULONGLONG), FIELD_OFFSET(CASC_FILE_ENTRY, FileNameHash));
if(pRootHandler->pRootMap == NULL)
return ERROR_NOT_ENOUGH_MEMORY;
// Parse the ROOT file
pTextFile = ListFile_FromBuffer(pbRootFile, cbRootFile);
if(pTextFile != NULL)
{
// Get the initial line, containing variable names
nLength = ListFile_GetNextLine(pTextFile, szOneLine, _maxchars(szOneLine));
// Determine the index of the "FILENAME" variable
nError = GetRootVariableIndex(szOneLine, szOneLine + nLength, "FILENAME", &nFileNameIndex);
if(nError == ERROR_SUCCESS)
{
// Parse the next lines
while((nLength = ListFile_GetNextLine(pTextFile, szOneLine, _maxchars(szOneLine))) > 0)
{
// Parse the line
nError = ParseRootFileLine(szOneLine, szOneLine + nLength, nFileNameIndex, &EncodingKey, szFileName, _maxchars(szFileName));
if(nError == ERROR_SUCCESS)
{
InsertFileEntry(pRootHandler, szFileName, KeyBuffer.Value);
}
}
}
// Free the listfile
ListFile_Free(pTextFile);
}
// Succeeded
return nError;
}
|
