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/*
Copyright 2012 bigbiff/Dees_Troy TeamWin
This file is part of TWRP/TeamWin Recovery Project.
TWRP 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, either version 3 of the License, or
(at your option) any later version.
TWRP 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 for more details.
You should have received a copy of the GNU General Public License
along with TWRP. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string>
#include <map>
#include <fstream>
#include <sstream>
#include "infomanager.hpp"
#include "twcommon.h"
#include "partitions.hpp"
#include "set_metadata.h"
using namespace std;
InfoManager::InfoManager() {
file_version = 0;
is_const = false;
}
InfoManager::InfoManager(const string& filename) {
file_version = 0;
is_const = false;
SetFile(filename);
}
InfoManager::~InfoManager(void) {
Clear();
}
void InfoManager::SetFile(const string& filename) {
File = filename;
}
void InfoManager::SetFileVersion(int version) {
file_version = version;
}
void InfoManager::SetConst(void) {
is_const = true;
}
void InfoManager::Clear(void) {
mValues.clear();
}
int InfoManager::LoadValues(void) {
string str;
// Read in the file, if possible
FILE* in = fopen(File.c_str(), "rb");
if (!in) {
LOGINFO("InfoManager file '%s' not found.\n", File.c_str());
return -1;
} else {
LOGINFO("InfoManager loading from '%s'.\n", File.c_str());
}
if (file_version) {
int read_file_version;
if (fread(&read_file_version, 1, sizeof(int), in) != sizeof(int))
goto error;
if (read_file_version != file_version) {
LOGINFO("InfoManager file version has changed, not reading file\n");
goto error;
}
}
while (!feof(in)) {
string Name;
string Value;
unsigned short length;
char array[513];
if (fread(&length, 1, sizeof(unsigned short), in) != sizeof(unsigned short)) goto error;
if (length >= 512) goto error;
if (fread(array, 1, length, in) != length) goto error;
array[length+1] = '\0';
Name = array;
if (fread(&length, 1, sizeof(unsigned short), in) != sizeof(unsigned short)) goto error;
if (length >= 512) goto error;
if (fread(array, 1, length, in) != length) goto error;
array[length+1] = '\0';
Value = array;
map<string, string>::iterator pos;
pos = mValues.find(Name);
if (pos != mValues.end()) {
pos->second = Value;
} else {
mValues.insert(make_pair(Name, Value));
}
}
error:
fclose(in);
return 0;
}
int InfoManager::SaveValues(void) {
if (File.empty())
return -1;
PartitionManager.Mount_By_Path(File, true);
LOGINFO("InfoManager saving '%s'\n", File.c_str());
FILE* out = fopen(File.c_str(), "wb");
if (!out)
return -1;
if (file_version) {
fwrite(&file_version, 1, sizeof(int), out);
}
map<string, string>::iterator iter;
for (iter = mValues.begin(); iter != mValues.end(); ++iter) {
unsigned short length = (unsigned short) iter->first.length() + 1;
fwrite(&length, 1, sizeof(unsigned short), out);
fwrite(iter->first.c_str(), 1, length, out);
length = (unsigned short) iter->second.length() + 1;
fwrite(&length, 1, sizeof(unsigned short), out);
fwrite(iter->second.c_str(), 1, length, out);
}
fclose(out);
tw_set_default_metadata(File.c_str());
return 0;
}
int InfoManager::GetValue(const string& varName, string& value) {
string localStr = varName;
map<string, string>::iterator pos;
pos = mValues.find(localStr);
if (pos == mValues.end())
return -1;
value = pos->second;
return 0;
}
int InfoManager::GetValue(const string& varName, int& value) {
string data;
if (GetValue(varName,data) != 0)
return -1;
value = atoi(data.c_str());
return 0;
}
int InfoManager::GetValue(const string& varName, float& value) {
string data;
if (GetValue(varName,data) != 0)
return -1;
value = atof(data.c_str());
return 0;
}
unsigned long long InfoManager::GetValue(const string& varName, unsigned long long& value) {
string data;
if (GetValue(varName,data) != 0)
return -1;
value = strtoull(data.c_str(), NULL, 10);
return 0;
}
// This function will return an empty string if the value doesn't exist
string InfoManager::GetStrValue(const string& varName) {
string retVal;
GetValue(varName, retVal);
return retVal;
}
// This function will return 0 if the value doesn't exist
int InfoManager::GetIntValue(const string& varName) {
string retVal;
GetValue(varName, retVal);
return atoi(retVal.c_str());
}
int InfoManager::SetValue(const string& varName, const string& value) {
// Don't allow empty names or numerical starting values
if (varName.empty() || (varName[0] >= '0' && varName[0] <= '9'))
return -1;
map<string, string>::iterator pos;
pos = mValues.find(varName);
if (pos == mValues.end())
mValues.insert(make_pair(varName, value));
else if (!is_const)
pos->second = value;
return 0;
}
int InfoManager::SetValue(const string& varName, const int value) {
ostringstream valStr;
valStr << value;
return SetValue(varName, valStr.str());
}
int InfoManager::SetValue(const string& varName, const float value) {
ostringstream valStr;
valStr << value;
return SetValue(varName, valStr.str());
}
int InfoManager::SetValue(const string& varName, const unsigned long long& value) {
ostringstream valStr;
valStr << value;
return SetValue(varName, valStr.str());
}
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