dolphin/Source/Core/Common/SysConf.cpp

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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
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#include <cinttypes>
#include <cstdio>
#include <cstring>
#include <string>
#include <vector>
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#include "Common/Common.h"
#include "Common/FileUtil.h"
#include "Common/SysConf.h"
SysConf::SysConf()
: m_IsValid(false)
{
m_FilenameDefault = File::GetUserPath(F_WIISYSCONF_IDX);
m_IsValid = LoadFromFile(m_FilenameDefault.c_str());
}
SysConf::~SysConf()
{
if (!m_IsValid)
return;
Save();
Clear();
}
void SysConf::Clear()
{
for (auto i = m_Entries.begin(); i < m_Entries.end() - 1; ++i)
delete [] i->data;
m_Entries.clear();
}
bool SysConf::LoadFromFile(const char *filename)
{
// Basic check
if (!File::Exists(filename))
{
File::CreateFullPath(filename);
GenerateSysConf();
return true;
}
u64 size = File::GetSize(filename);
if (size != SYSCONF_SIZE)
{
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if (AskYesNoT("Your SYSCONF file is the wrong size.\nIt should be 0x%04x (but is 0x%04" PRIx64 ")\nDo you want to generate a new one?",
SYSCONF_SIZE, size))
{
GenerateSysConf();
return true;
}
else
return false;
}
File::IOFile f(filename, "rb");
if (f.IsOpen())
{
if (LoadFromFileInternal(f.ReleaseHandle()))
{
m_Filename = filename;
return true;
}
}
return false;
}
bool SysConf::LoadFromFileInternal(FILE *fh)
{
File::IOFile f(fh);
// Fill in infos
SSysConfHeader s_Header;
f.ReadArray(s_Header.version, 4);
f.ReadArray(&s_Header.numEntries, 1);
s_Header.numEntries = Common::swap16(s_Header.numEntries) + 1;
for (u16 index = 0; index < s_Header.numEntries; index++)
{
SSysConfEntry tmpEntry;
f.ReadArray(&tmpEntry.offset, 1);
tmpEntry.offset = Common::swap16(tmpEntry.offset);
m_Entries.push_back(tmpEntry);
}
// Last offset is an invalid entry. We ignore it throughout this class
for (auto i = m_Entries.begin(); i < m_Entries.end() - 1; ++i)
{
SSysConfEntry& curEntry = *i;
f.Seek(curEntry.offset, SEEK_SET);
u8 description = 0;
f.ReadArray(&description, 1);
// Data type
curEntry.type = (SysconfType)((description & 0xe0) >> 5);
// Length of name in bytes - 1
curEntry.nameLength = (description & 0x1f) + 1;
// Name
f.ReadArray(curEntry.name, curEntry.nameLength);
curEntry.name[curEntry.nameLength] = '\0';
// Get length of data
curEntry.dataLength = 0;
switch (curEntry.type)
{
case Type_BigArray:
f.ReadArray(&curEntry.dataLength, 1);
curEntry.dataLength = Common::swap16(curEntry.dataLength);
break;
case Type_SmallArray:
{
u8 dlength = 0;
f.ReadBytes(&dlength, 1);
curEntry.dataLength = dlength;
break;
}
case Type_Byte:
case Type_Bool:
curEntry.dataLength = 1;
break;
case Type_Short:
curEntry.dataLength = 2;
break;
case Type_Long:
curEntry.dataLength = 4;
break;
default:
PanicAlertT("Unknown entry type %i in SYSCONF (%s@%x)!",
curEntry.type, curEntry.name, curEntry.offset);
return false;
break;
}
// Fill in the actual data
if (curEntry.dataLength)
{
curEntry.data = new u8[curEntry.dataLength];
f.ReadArray(curEntry.data, curEntry.dataLength);
}
}
return f.IsGood();
}
// Returns the size of the item in file
unsigned int create_item(SSysConfEntry &item, SysconfType type, const std::string &name,
const int data_length, unsigned int offset)
{
item.offset = offset;
item.type = type;
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item.nameLength = (u8)(name.length());
strncpy(item.name, name.c_str(), 32);
item.dataLength = data_length;
item.data = new u8[data_length];
memset(item.data, 0, data_length);
switch (type)
{
case Type_BigArray:
// size of description + name length + size of dataLength + data length + null
return 1 + item.nameLength + 2 + item.dataLength + 1;
case Type_SmallArray:
// size of description + name length + size of dataLength + data length + null
return 1 + item.nameLength + 1 + item.dataLength + 1;
case Type_Byte:
case Type_Bool:
case Type_Short:
case Type_Long:
// size of description + name length + data length
return 1 + item.nameLength + item.dataLength;
default:
return 0;
}
}
void SysConf::GenerateSysConf()
{
SSysConfHeader s_Header;
strncpy(s_Header.version, "SCv0", 4);
s_Header.numEntries = Common::swap16(28 - 1);
SSysConfEntry items[27];
memset(items, 0, sizeof(SSysConfEntry) * 27);
// version length + size of numEntries + 28 * size of offset
unsigned int current_offset = 4 + 2 + 28 * 2;
// BT.DINF
current_offset += create_item(items[0], Type_BigArray, "BT.DINF", 0x460, current_offset);
items[0].data[0] = 4;
for (u8 i = 0; i < 4; ++i)
{
const u8 bt_addr[6] = {i, 0x00, 0x79, 0x19, 0x02, 0x11};
memcpy(&items[0].data[1 + 70 * i], bt_addr, sizeof(bt_addr));
memcpy(&items[0].data[7 + 70 * i], "Nintendo RVL-CNT-01", 19);
}
// BT.SENS
current_offset += create_item(items[1], Type_Long, "BT.SENS", 4, current_offset);
items[1].data[3] = 0x03;
// IPL.NIK
current_offset += create_item(items[2], Type_SmallArray, "IPL.NIK", 0x15, current_offset);
const u8 console_nick[14] = {0, 'd', 0, 'o', 0, 'l', 0, 'p', 0, 'h', 0, 'i', 0, 'n'};
memcpy(items[2].data, console_nick, 14);
// IPL.AR
current_offset += create_item(items[3], Type_Byte, "IPL.AR", 1, current_offset);
items[3].data[0] = 0x01;
// BT.BAR
current_offset += create_item(items[4], Type_Byte, "BT.BAR", 1, current_offset);
items[4].data[0] = 0x01;
// IPL.SSV
current_offset += create_item(items[5], Type_Byte, "IPL.SSV", 1, current_offset);
// IPL.LNG
current_offset += create_item(items[6], Type_Byte, "IPL.LNG", 1, current_offset);
items[6].data[0] = 0x01;
// IPL.SADR
current_offset += create_item(items[7], Type_BigArray, "IPL.SADR", 0x1007, current_offset);
items[7].data[0] = 0x6c; //(Switzerland) TODO should this default be changed?
// IPL.CB
current_offset += create_item(items[8], Type_Long, "IPL.CB", 4, current_offset);
items[8].data[0] = 0x0f; items[8].data[1] = 0x11;
items[8].data[2] = 0x14; items[8].data[3] = 0xa6;
// BT.SPKV
current_offset += create_item(items[9], Type_Byte, "BT.SPKV", 1, current_offset);
items[9].data[0] = 0x58;
// IPL.PC
current_offset += create_item(items[10], Type_SmallArray, "IPL.PC", 0x49, current_offset);
items[10].data[1] = 0x04; items[10].data[2] = 0x14;
// NET.CTPC
current_offset += create_item(items[11], Type_Long, "NET.CTPC", 4, current_offset);
// WWW.RST
current_offset += create_item(items[12], Type_Bool, "WWW.RST", 1, current_offset);
// BT.CDIF
current_offset += create_item(items[13], Type_BigArray, "BT.CDIF", 0x204, current_offset);
// IPL.INC
current_offset += create_item(items[14], Type_Long, "IPL.INC", 4, current_offset);
items[14].data[3] = 0x08;
// IPL.FRC
current_offset += create_item(items[15], Type_Long, "IPL.FRC", 4, current_offset);
items[15].data[3] = 0x28;
// IPL.CD
current_offset += create_item(items[16], Type_Bool, "IPL.CD", 1, current_offset);
items[16].data[0] = 0x01;
// IPL.CD2
current_offset += create_item(items[17], Type_Bool, "IPL.CD2", 1, current_offset);
items[17].data[0] = 0x01;
// IPL.UPT
current_offset += create_item(items[18], Type_Byte, "IPL.UPT", 1, current_offset);
items[18].data[0] = 0x02;
// IPL.PGS
current_offset += create_item(items[19], Type_Byte, "IPL.PGS", 1, current_offset);
// IPL.E60
current_offset += create_item(items[20], Type_Byte, "IPL.E60", 1, current_offset);
items[20].data[0] = 0x01;
// IPL.DH
current_offset += create_item(items[21], Type_Byte, "IPL.DH", 1, current_offset);
// NET.WCFG
current_offset += create_item(items[22], Type_Long, "NET.WCFG", 4, current_offset);
items[22].data[3] = 0x01;
// IPL.IDL
current_offset += create_item(items[23], Type_SmallArray, "IPL.IDL", 1, current_offset);
items[23].data[0] = 0x01;
// IPL.EULA
current_offset += create_item(items[24], Type_Bool, "IPL.EULA", 1, current_offset);
items[24].data[0] = 0x01;
// BT.MOT
current_offset += create_item(items[25], Type_Byte, "BT.MOT", 1, current_offset);
items[25].data[0] = 0x01;
// MPLS.MOVIE
current_offset += create_item(items[26], Type_Bool, "MPLS.MOVIE", 1, current_offset);
items[26].data[0] = 0x01;
for (const SSysConfEntry& item : items)
m_Entries.push_back(item);
File::CreateFullPath(m_FilenameDefault);
File::IOFile g(m_FilenameDefault, "wb");
// Write the header and item offsets
g.WriteBytes(&s_Header.version, sizeof(s_Header.version));
g.WriteBytes(&s_Header.numEntries, sizeof(u16));
for (int i = 0; i != 27; ++i)
{
const u16 tmp_offset = Common::swap16(items[i].offset);
g.WriteBytes(&tmp_offset, 2);
}
const u16 end_data_offset = Common::swap16(current_offset);
g.WriteBytes(&end_data_offset, 2);
// Write the items
const u8 null_byte = 0;
for (int i = 0; i != 27; ++i)
{
u8 description = (items[i].type << 5) | (items[i].nameLength - 1);
g.WriteBytes(&description, sizeof(description));
g.WriteBytes(&items[i].name, items[i].nameLength);
switch (items[i].type)
{
case Type_BigArray:
{
const u16 tmpDataLength = Common::swap16(items[i].dataLength);
g.WriteBytes(&tmpDataLength, 2);
g.WriteBytes(items[i].data, items[i].dataLength);
g.WriteBytes(&null_byte, 1);
}
break;
case Type_SmallArray:
g.WriteBytes(&items[i].dataLength, 1);
g.WriteBytes(items[i].data, items[i].dataLength);
g.WriteBytes(&null_byte, 1);
break;
default:
g.WriteBytes(items[i].data, items[i].dataLength);
break;
}
}
// Pad file to the correct size
const u64 cur_size = g.GetSize();
for (unsigned int i = 0; i != 16380 - cur_size; ++i)
g.WriteBytes(&null_byte, 1);
// Write the footer
g.WriteBytes("SCed", 4);
m_Filename = m_FilenameDefault;
}
bool SysConf::SaveToFile(const char *filename)
{
File::IOFile f(filename, "r+b");
for (auto i = m_Entries.begin(); i < m_Entries.end() - 1; ++i)
{
// Seek to after the name of this entry
f.Seek(i->offset + i->nameLength + 1, SEEK_SET);
// We may have to write array length value...
if (i->type == Type_BigArray)
{
const u16 tmpDataLength = Common::swap16(i->dataLength);
f.WriteArray(&tmpDataLength, 1);
}
else if (i->type == Type_SmallArray)
{
const u8 len = (u8)(i->dataLength);
f.WriteArray(&len, 1);
}
// Now write the actual data
f.WriteBytes(i->data, i->dataLength);
}
return f.IsGood();
}
bool SysConf::Save()
{
if (!m_IsValid)
return false;
return SaveToFile(m_Filename.c_str());
}
void SysConf::UpdateLocation()
{
// if the old Wii User dir had a sysconf file save any settings that have been changed to it
if (m_IsValid)
Save();
// Clear the old filename and set the default filename to the new user path
// So that it can be generated if the file does not exist in the new location
m_Filename.clear();
m_FilenameDefault = File::GetUserPath(F_WIISYSCONF_IDX);
Reload();
}
bool SysConf::Reload()
{
if (m_IsValid)
Clear();
std::string& filename = m_Filename.empty() ? m_FilenameDefault : m_Filename;
m_IsValid = LoadFromFile(filename.c_str());
return m_IsValid;
}