Bug Summary

File:/home/anal/dolphin-emu/Source/Core/DiscIO/Src/WiiWad.cpp
Location:line 114, column 85
Description:Value stored to 'Offset' is never read

Annotated Source Code

1// Copyright 2013 Dolphin Emulator Project
2// Licensed under GPLv2
3// Refer to the license.txt file included.
4
5#include "NANDContentLoader.h"
6
7#include <algorithm>
8#include <cctype>
9#include "MathUtil.h"
10#include "FileUtil.h"
11#include "Log.h"
12#include "WiiWad.h"
13
14namespace DiscIO
15{
16
17class CBlobBigEndianReader
18{
19public:
20 CBlobBigEndianReader(DiscIO::IBlobReader& _rReader) : m_rReader(_rReader) {}
21
22 u32 Read32(u64 _Offset)
23 {
24 u32 Temp;
25 m_rReader.Read(_Offset, 4, (u8*)&Temp);
26 return(Common::swap32(Temp));
27 }
28
29private:
30 DiscIO::IBlobReader& m_rReader;
31};
32
33WiiWAD::WiiWAD(const std::string& _rName)
34{
35 DiscIO::IBlobReader* pReader = DiscIO::CreateBlobReader(_rName.c_str());
36 if (pReader == NULL__null || File::IsDirectory(_rName))
37 {
38 m_Valid = false;
39 if(pReader) delete pReader;
40 return;
41 }
42
43 m_Valid = ParseWAD(*pReader);
44 delete pReader;
45}
46
47WiiWAD::~WiiWAD()
48{
49 if (m_Valid)
50 {
51 delete m_pCertificateChain;
52 delete m_pTicket;
53 delete m_pTMD;
54 delete m_pDataApp;
55 delete m_pFooter;
56 }
57}
58
59u8* WiiWAD::CreateWADEntry(DiscIO::IBlobReader& _rReader, u32 _Size, u64 _Offset)
60{
61 if (_Size > 0)
62 {
63 u8* pTmpBuffer = new u8[_Size];
64 _dbg_assert_msg_(BOOT, pTmpBuffer!=0, "WiiWAD: Cant allocate memory for WAD entry"){};
65
66 if (!_rReader.Read(_Offset, _Size, pTmpBuffer))
67 {
68 ERROR_LOG(DISCIO, "WiiWAD: Could not read from file")do { { if (LogTypes::LERROR <= 3) GenericLog(LogTypes::LERROR
, LogTypes::DISCIO, "/home/anal/dolphin-emu/Source/Core/DiscIO/Src/WiiWad.cpp"
, 68, "WiiWAD: Could not read from file"); } } while (0);
69 PanicAlertT("WiiWAD: Could not read from file")MsgAlert(false, WARNING, "WiiWAD: Could not read from file");
70 }
71 return pTmpBuffer;
72 }
73 return NULL__null;
74}
75
76
77bool WiiWAD::ParseWAD(DiscIO::IBlobReader& _rReader)
78{
79 CBlobBigEndianReader ReaderBig(_rReader);
80
81 // get header size
82 u32 HeaderSize = ReaderBig.Read32(0);
83 if (HeaderSize != 0x20)
84 {
85 _dbg_assert_msg_(BOOT, (HeaderSize==0x20), "WiiWAD: Header size != 0x20"){};
86 return false;
87 }
88
89 // get header
90 u8 Header[0x20];
91 _rReader.Read(0, HeaderSize, Header);
92 u32 HeaderType = ReaderBig.Read32(0x4);
93 if ((0x49730000 != HeaderType) && (0x69620000 != HeaderType))
94 return false;
95
96 m_CertificateChainSize = ReaderBig.Read32(0x8);
97 u32 Reserved = ReaderBig.Read32(0xC);
98 m_TicketSize = ReaderBig.Read32(0x10);
99 m_TMDSize = ReaderBig.Read32(0x14);
100 m_DataAppSize = ReaderBig.Read32(0x18);
101 m_FooterSize = ReaderBig.Read32(0x1C);
102
103#if MAX_LOGLEVEL3 >= DEBUG_LEVEL5
104 _dbg_assert_msg_(BOOT, Reserved==0x00, "WiiWAD: Reserved must be 0x00"){};
105#else
106 (void)Reserved;
107#endif
108
109 u32 Offset = 0x40;
110 m_pCertificateChain = CreateWADEntry(_rReader, m_CertificateChainSize, Offset); Offset += ROUND_UP(m_CertificateChainSize, 0x40)(((m_CertificateChainSize) + (0x40) - 1) & ~((0x40) - 1));
111 m_pTicket = CreateWADEntry(_rReader, m_TicketSize, Offset); Offset += ROUND_UP(m_TicketSize, 0x40)(((m_TicketSize) + (0x40) - 1) & ~((0x40) - 1));
112 m_pTMD = CreateWADEntry(_rReader, m_TMDSize, Offset); Offset += ROUND_UP(m_TMDSize, 0x40)(((m_TMDSize) + (0x40) - 1) & ~((0x40) - 1));
113 m_pDataApp = CreateWADEntry(_rReader, m_DataAppSize, Offset); Offset += ROUND_UP(m_DataAppSize, 0x40)(((m_DataAppSize) + (0x40) - 1) & ~((0x40) - 1));
114 m_pFooter = CreateWADEntry(_rReader, m_FooterSize, Offset); Offset += ROUND_UP(m_FooterSize, 0x40)(((m_FooterSize) + (0x40) - 1) & ~((0x40) - 1));
Value stored to 'Offset' is never read
115
116 return true;
117}
118
119bool WiiWAD::IsWiiWAD(const std::string& _rName)
120{
121 DiscIO::IBlobReader* pReader = DiscIO::CreateBlobReader(_rName.c_str());
122 if (pReader == NULL__null)
123 return false;
124
125 CBlobBigEndianReader Reader(*pReader);
126 bool Result = false;
127
128 // check for wii wad
129 if (Reader.Read32(0x00) == 0x20)
130 {
131 u32 WADTYpe = Reader.Read32(0x04);
132 switch(WADTYpe)
133 {
134 case 0x49730000:
135 case 0x69620000:
136 Result = true;
137 }
138 }
139
140 delete pReader;
141
142 return Result;
143}
144
145
146
147} // namespace end
148