Added SavedData Class

under /src/data/
passed all my testing!

commiting only this class with no changes within the rest of the
project!
This commit is contained in:
Sagi Dayan 2014-06-17 22:15:38 +03:00
parent 5019f5d650
commit 320f0cc1d1
3 changed files with 257 additions and 1 deletions

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@ -22,7 +22,8 @@ SOURCES += main/coursestablemanager.cpp \
src/grades/GradePage.cpp \
src/grades/Page.cpp \
src/jce/jcedate.cpp \
src/jce/jcelogin.cpp
src/jce/jcelogin.cpp \
src/data/savedata.cpp
@ -37,6 +38,7 @@ HEADERS += main/coursestablemanager.h \
src/jce/jcedate.h \
src/jce/jcelogin.h \
src/jce/jceLoginHtmlScripts.h \
src/data/savedata.h

200
src/data/savedata.cpp Normal file
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@ -0,0 +1,200 @@
#include "savedata.h"
/**
* @brief Checks the status tag in the file
* @return boolean the status
*/
bool SaveData::isSaved()
{
QString status;
QFile* file = new QFile(FILE_NAME);
/* Opening file for read */
if(file->open(QIODevice::ReadOnly|QIODevice::Text))
{
status = getValViaTag("status", file);
if(status == "true")
{
file->close(); //close & return
return true;
}
return false; //close & return
file->close();
}
/* If Faild to open */
std::cout << "Faild To Accsess file: " << FILE_NAME << std::endl;
return false;
}
/**
* @brief This Function will modify the file, and save the data.
* @param username - QString
* @param password - QString
* @return true if saved - false if error
*/
bool SaveData::save(QString username, QString password)
{
std::cout << "Trying to save data..." << std::endl;
QFile file(FILE_NAME);
if(!file.open(QIODevice::WriteOnly|QIODevice::Text))
return false; /* IO Error! */
QTextStream output(&file);
QString hash_pass = hashPassword(password);
output << "[status]true[/]\n[username]"<<username<<"[/]\n"<<"[password]"<<hash_pass<<"[/]"; //Un Hashed Password in string!
file.close();
std::cout << "Saved!" << std::endl;
return true;
}
/**
* @brief Deletes the data from file, and sets status tag to false.
* @return true if success
*/
bool SaveData::deleteData()
{
QFile file(FILE_NAME);
if(!file.open(QIODevice::WriteOnly|QIODevice::Text))
return false; /* IO Error! */
QTextStream output(&file);
output << DEFAULT_DATA_EMPTY;
file.close();
return true;
}
/**
* @brief username getter
* @return QString - username
*/
QString SaveData::getUsername()
{
QString username = "";
QFile* file = new QFile(FILE_NAME);
/* Opening file for read */
if(file->open(QIODevice::ReadOnly|QIODevice::Text))
username = getValViaTag("username", file);
file->close();
return username;
}
/**
* @brief getter for password
* @return QString - password
*/
QString SaveData::getPassword()
{
QString pass = "";
QFile* file = new QFile(FILE_NAME);
/* Opening file for read */
if(file->open(QIODevice::ReadOnly|QIODevice::Text))
pass = getValViaTag("password", file);
file->close();
pass = deHashPasword(pass);
return pass;
}
/**
* @brief This is A functions that will init the tags file.
* if it exist - do nothing
* if there is no file, it will create it and run the deleteData function
* so tags will be set.
*/
void SaveData::init()
{
QFile file(FILE_NAME);
if(!file.exists())
{
file.open(QIODevice::ReadWrite | QIODevice::Text);
file.close();
deleteData();
}
}
/**
* @brief This function will return the vale of a given tag name.
* NOTE: valid tag names are : "status", "username", "password"
* if tag is invalid - will return "" - an empty QString!
* @param tag - QString, the tag name
* @param file - a QFile pointer
* @return QString - the value in tag
* NOTE: if NULL value, or an invalid tag name -> return "" (empty QString!)
*/
QString SaveData::getValViaTag(QString tag, QFile* file)
{
QString val, line , tmpTag;
QTextStream textStream( file);
while((line = textStream.readLine()) != NULL)
{
std::cout << "DEBUG: line => " << line.toStdString() << std::endl;
for(int i = 0 ; i< line.length() ;++i)
{
if(line[i] == '[' && line[i+1] != '/') //get open tag at begining of line and not end of tag ("[/")
{
i++;
tmpTag = line.mid(i, tag.length());
if(tmpTag == tag)
{
i+= tag.length()+1; // i is now right after '['
int j = i;
while(line[j] != '[')// put j at the end of the value
j++;
/* Then... the value is :*/
val = line.mid(i, j-i);
std::cout << "DEBUG: ["<<tag.toStdString()<<"]"<<val.toStdString()<<"[/]"<<std::endl;
return val;
}
}
}
}
return ""; //this will be as NULL
}
/**
* @brief This function will provide the user the most basic security of the stored password.
* it is NOT an encryption! it will store every char of the password as ascii encoded,
* separated by "-" for the deHsh func.
* @param pass - a QString to "hash"
* @return QString - The "hashed" password
*/
QString SaveData::hashPassword(QString pass)
{
QString hash="";
int code;
for(QChar c : pass)
{
code = (int)c.toLatin1();
hash.append(QString::number(code));
hash.append("-");
}
return hash;
}
/**
* @brief This function will "dehash" the "hashed" password.
* uses standard c string.h strtok with the "-" as the choping points.
* builds a QString from the ascii.
* @param pass - The hashed password
* @return QString - password uncoded
*/
QString SaveData::deHashPasword(QString pass)
{
char* cpyPass = strdup(pass.toStdString().c_str());
char* tok;
char* ch;
int val;
QString password;
tok = strtok(cpyPass,"-");
while (tok != NULL)
{
ch = tok;
val = atoi(ch);
password.append(val);
tok = strtok(NULL, "-");
}
return password;
}

54
src/data/savedata.h Normal file
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@ -0,0 +1,54 @@
#ifndef SAVEDATA_H
#define SAVEDATA_H
/**
* SaveData Class
* --------------------------------------
*
* all functions in this class are static!
* no need to create an object!
*
* provides all the needed functions
* for saving user data for JCE login.
*
* the class will enteract with a file formated by tags for storing the valus.
* the file format is as sutch:
*
* [status]Status Value[/]
* [username]usernaem vale[/]
* [password]hashed(not really) password vale[/]
*
* the class will create a file if not exists by calling Save Data::init() function.
*
* for more info about functions - see implantation
*/
/* QT libs */
#include <QString>
#include <QFile>
#include <QTextStream>
/* C/C++ libs */
#include <string.h>
#include <stdlib.h>
#include <iostream>
#define FILE_NAME "JAC_DB.dat"
#define DEFAULT_DATA_EMPTY "[status]false[/]\n[username][/]\n[password][/]"
class SaveData
{
public:
bool static isSaved();
bool static save(QString username, QString password);
bool static deleteData();
QString static getUsername();
QString static getPassword();
void static init();
private:
QString static getValViaTag(QString tag, QFile *file);
QString static hashPassword(QString pass);
QString static deHashPasword(QString pass);
};
#endif // SAVEDATA_H