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fanny-app/sources/serverconn.cpp

793 lines
27 KiB
C++

#include "headers/serverconn.h"
ServerConn * pGlobalServConn = nullptr;
ServerConn::ServerConn(QObject *parent) : QObject(parent)
{
qDebug("+----- serverconn konstruktor -----+");
pGlobalServConn = this;
this->networkManager = new QNetworkAccessManager();
this->refreshNetworkManager = new QNetworkAccessManager();
// check login state
int perm = pGlobalAppSettings->loadSetting("permanent").toInt();
qDebug() << "+-- login state: " << perm;
if(perm == 1){
// permanent login
// restore login
this->username = pGlobalAppSettings->loadSetting("username");
this->password = pGlobalAppSettings->loadSetting("password");
this->setState("loggedIn");
}
else {
this->setState("notLoggedIn");
}
this->checkConnTimer = new QTimer();
this->checkConnTimer->setInterval(1000);
this->checkConnTimer->setSingleShot(true);
connect(checkConnTimer, SIGNAL(timeout()), this, SLOT(checkConn()));
this->checkConnTimer->start();
}
int ServerConn::login(QString username, QString password, bool permanent)
{
// QUrlQuery pdata;
// ReturnData_t ret = this->senddata(QUrl("http://www.fanny-leicht.de/static15/http.intern/sheute.pdf"), pdata);
// qDebug() << ret.text;
// Create network request
QNetworkRequest request;
// call a non-existent file to be fast
request.setUrl( QUrl( "http://www.fanny-leicht.de/static15/http.intern/logintest" ) );
// pack the credentials into a string
QString credentialsString = username + ":" + password;
// convert it to a byte array
QByteArray data = credentialsString.toLocal8Bit().toBase64();
// put it into a string
QString headerData = "Basic " + data;
// and finally write it into the request header
request.setRawHeader( "Authorization", headerData.toLocal8Bit() );
// Send GET request to fanny server
QNetworkReply*reply = networkManager->get( request );
// loop to wait until the request has finished before processing the data
QEventLoop loop;
// timer to cancel the request after 3 seconds
QTimer timer;
timer.setSingleShot(true);
// quit the loop when the request finised
loop.connect(this->networkManager, SIGNAL(finished(QNetworkReply*)), SLOT(quit()));
// or the timer timed out
loop.connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
// start the timer
timer.start(2000);
// start the loop
loop.exec();
// get the status code from the request
int status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
// 404 is a success because a non existent file was called and not 401 was returned -> user data was correct
if(status_code == 404){
// store username and password in the class variables
this->username = username;
this->password = password;
if(permanent){
// if the user wants to say logged in, store the username and password to the settings file
pGlobalAppSettings->writeSetting("permanent", "1");
pGlobalAppSettings->writeSetting("username", username);
pGlobalAppSettings->writeSetting("password", password);
}
this->setState("loggedIn");
// return success
return(200);
}
else {
// if not 404 was returned -> error -> return the return code
this->setState("notLoggedIn");
return(status_code);
}
}
int ServerConn::logout()
{
// reset the data stored in the class
this->username = "";
this->password = "";
// reset the data stored in the settings
pGlobalAppSettings->writeSetting("permanent", "0");
pGlobalAppSettings->writeSetting("username", "");
pGlobalAppSettings->writeSetting("password", "");
this->setState("notLoggedIn");
// return success
return(200);
}
QString ServerConn::getDay(QString day)
{
this->progress = 0;
// Create request
QNetworkRequest request;
request.setUrl( QUrl( "http://www.fanny-leicht.de/static15/http.intern/" + day + ".pdf" ) );
// Pack in credentials
QString concatenatedCredentials = this->username + ":" + this->password;
QByteArray data = concatenatedCredentials.toLocal8Bit().toBase64();
QString headerData = "Basic " + data;
request.setRawHeader( "Authorization", headerData.toLocal8Bit() );
QUrlQuery pdata;
// Send request and connect all possible signals
QNetworkReply*reply = this->networkManager->post(request, pdata.toString(QUrl::FullyEncoded).toUtf8());
//QNetworkReply*reply = networkManager->get( request );
connect(reply, SIGNAL(downloadProgress(qint64, qint64)),
this, SLOT(updateProgress(qint64, qint64)));
QEventLoop loop;
loop.connect(this->networkManager, SIGNAL(finished(QNetworkReply*)), SLOT(quit()));
loop.exec();
this->progress = 1;
int status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if(status_code == 200){
QString path = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
QDir dir;
dir.mkdir(path + "/.fannyapp-tmp");
QFile file(path + "/.fannyapp-tmp/" + day + ".pdf");
file.remove();
file.open(QIODevice::ReadWrite);
file.write(reply->readAll());
file.close();
QUrl url = QUrl::fromLocalFile(path + "/.fannyapp-tmp/" + day + ".pdf");
// QDesktopServices::openUrl(url);
return("OK_" + url.toString());
}
else if(status_code == 401){
return("Ungültige Benutzerdaten.");
}
else if(status_code == 0){
return("Keine Verbindung zum Server.");
}
else {
QString ret = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toChar();
ret = ret + " (" + reply->attribute(QNetworkRequest::HttpReasonPhraseAttribute).toChar() + ")";
return(ret);
}
}
int ServerConn::checkConn()
{
// Create request
QNetworkRequest request;
request.setUrl( QUrl( "http://www.fanny-leicht.de/static15/http.intern/" ) );
// Pack in credentials
// e.g. ZedlerDo:LxyJQB (yes, these do actually work ;)
QString concatenatedCredentials = this->username + ":" + this->password;
QByteArray data = concatenatedCredentials.toLocal8Bit().toBase64();
QString headerData = "Basic " + data;
request.setRawHeader( "Authorization", headerData.toLocal8Bit() );
QUrlQuery pdata;
// Send request and connect all possible signals
QNetworkReply*reply = this->refreshNetworkManager->post(request, pdata.toString(QUrl::FullyEncoded).toUtf8());
//QNetworkReply*reply = networkManager->get( request );
QTimer timer;
timer.start(3000);
QEventLoop loop;
loop.connect(this->refreshNetworkManager, SIGNAL(finished(QNetworkReply*)), SLOT(quit()));
loop.connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
loop.exec();
int status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if(status_code == 401){
authErrorCount ++;
if(authErrorCount > 3){
logout();
}
}
this->checkConnTimer->start();
return(status_code);
}
void ServerConn::updateProgress(qint64 read, qint64 total)
{
int read_int = int(read);
int total_int = int(total);
float percent = (float(read_int) / float(total_int));
this->progress = percent;
percent = int(percent);
// qDebug() << read << total << percent << "%";
}
float ServerConn::getProgress()
{
return(this->progress);
}
int ServerConn::getEvents(QString day){
/*
this->progress = 0;
ReturnData_t ret; //this is a custom type to store the returned data
// Call the webservice
QNetworkRequest request(QUrl("http://api.itsblue.de/fanny/vertretung.php?uname=" + this->username + "&passwd=" + this->password + "&day=" + day + "&agree=true"));
request.setHeader(QNetworkRequest::ContentTypeHeader,
"application/x-www-form-urlencoded");
//send a POST request with the given url and data to the server
QNetworkReply* reply;
QUrlQuery pdata;
reply = this->networkManager->post(request, pdata.toString(QUrl::FullyEncoded).toUtf8());
connect(reply, SIGNAL(downloadProgress(qint64, qint64)),
this, SLOT(updateProgress(qint64, qint64)));
//wait until the request has finished
QEventLoop loop;
loop.connect(this->networkManager, SIGNAL(finished(QNetworkReply*)), SLOT(quit()));
loop.exec();
//get the status code
QVariant status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
this->progress = 1;
if(status_code != 200){
// if the request didn't result in a success, return the error code
// if the request failed but there is still old data available
if(!this->m_events.isEmpty()){
// set the status code to 902 (old data)
status_code = 902;
}
return(status_code.toInt());
}
QString eventString = reply->readAll();
*/
qDebug() << "reading text file";
QFile * textFile = new QFile(":/samplehtml/Download File.txt");
if (!textFile->open(QIODevice::ReadOnly | QIODevice::Text)) {
qDebug() << "Load XML File Problem Couldn't open xmlfile.xml to load settings for download";
return 900;
}
QString eventString = textFile->readAll();
// separate all lines into a list
QStringList events = eventString.split("\n");
// a line (one element of the list) looks like this:
// class hour replace subject room to text
// 8a 1-2 Ei Ch --- Entfall KEINE KA
// [ ] <-- at least two spaces
// to OR text can be blank
// temporary list to store the events for the given day
QList<QStringList> tmpEvents;
// go through the list and process every single row
foreach(QString event, events){
// value to count spaces between text
int spaceCount = 0;
// temporary list to store the data of one day
QStringList dayList;
// temporary dtring to store the data of one block
QString tmpString;
// processing works like:
// go through the line char by char
for(int i = 0;i < event.length(); i++){
// store the char temporarly
QCharRef tmpChar = event[i];
// check if the char is a space
if(tmpChar == " "){
// if so, increase the spaceCount by one
spaceCount ++;
}
else {
// if not -> new block or part of a block started
// could be : 8a 1 - 2 OR 8a 1 - 2
// here->| OR here->|
// in the first case, the space counter is higer than one
// in the second case, the space counter is exactly one
if(spaceCount == 1){
// -> append a space to the temp string
tmpString.append(" ");
}
// reset the space counter
spaceCount = 0;
// append the current character
tmpString.append(tmpChar);
}
// check if the soace count is 2
if(spaceCount == 2){
// if so -> break between two blocks
// could be: 8a 1 - 2 OR 8a 1 - 2
// here ->|
// -> append the current tmpString to the dayList
dayList.append(tmpString);
// and clear the tmpString
tmpString = "";
}
qDebug() << "char= " << tmpChar << " string= " << tmpString << " list= " << dayList;
}
// append the remaining tmpString to the dayList
dayList.append(tmpString);
// fill up the dayList with blanks until it reaches the defined length
while (dayList.length() < 7) {
dayList.append("");
}
// if the event matches the filter
QList<QStringList> filtersList = pGlobalAppSettings->readFilters();
if(filtersList.isEmpty()){
tmpEvents.append(dayList);
}
else {
foreach(QStringList filter, filtersList){
// go through all filters and check if one of them matches the event
if((dayList[0].contains(filter[0]) && dayList[0].contains(filter[1]))){
// append the dayList to the temporary event list
tmpEvents.append(dayList);
// terminate the loop
break;
}
}
}
}
// store the new events into the class variable
this->m_events = tmpEvents;
qDebug() << tmpEvents;
// check if there is any valid data
if(this->m_events.isEmpty()){
// no data
return(901);
}
// return success
return(200);
/*
qDebug() << "reading xml file";
QFile * xmlFile = new QFile(":/samplehtml/Download File.xml");
if (!xmlFile->open(QIODevice::ReadOnly | QIODevice::Text)) {
qDebug() << "Load XML File Problem Couldn't open xmlfile.xml to load settings for download";
return 900;
}
//QXmlStreamReader * xmlReader = new QXmlStreamReader(eventString);
QXmlStreamReader * xmlReader = new QXmlStreamReader(xmlFile);
//qDebug() << xmlFile->readAll();
QList<QStringList> tmpEvents;
QStringList dayList;
while (dayList.length() < 7) {
dayList.append("");
}
int currTop = 0;
<text top="530" left="3" width="20" height="17" font="1">8a</text>
<text top="530" left="55" width="36" height="17" font="1">1 - 2</text>
<text top="530" left="123" width="16" height="17" font="4"><i>Ei</i></text>
<text top="530" left="178" width="23" height="17" font="4"><i>Ch</i></text>
<text top="530" left="233" width="18" height="17" font="1">---</text>
<text top="530" left="275" width="50" height="17" font="1">Entfall</text>
<text top="530" left="391" width="83" height="17" font="1">KEINE KA</text>
<text top="194" left="3" width="62" height="17" font="1">5abc 1</text>
<text top="194" left="102" width="27" height="17" font="4"><i>We</i></text>
<text top="194" left="157" width="25" height="17" font="4"><i>KR</i></text>
<text top="194" left="209" width="18" height="17" font="1">---</text>
<text top="194" left="251" width="50" height="17" font="1">Entfall</text>
#define eventXmlPosGrade 3
#define eventXmlPosHour 55
#define eventXmlPosReplace 123
#define eventXmlPosSubject 178
#define eventXmlPosRoom 233
#define eventXmlPosTo 275
#define eventXmlPosText 391
QList<int> eventXmlPositions = {eventXmlPosGrade,eventXmlPosHour,eventXmlPosReplace,eventXmlPosSubject,eventXmlPosRoom,eventXmlPosTo,eventXmlPosText};
qDebug() << "start xml parsing";
//Parse the XML until we reach end of it
while(!xmlReader->atEnd()) {
if (xmlReader->readNextStartElement()) {
// read next element
if (xmlReader->name().toString() == "text"){
// text element found
QXmlStreamAttributes attributes = xmlReader->attributes();
QString attribute_value;
int top;
if(attributes.hasAttribute("font")){
attribute_value = attributes.value("font").toString();
}
if(attributes.hasAttribute("top")){
// get the y-Position of the text
top = attributes.value("top").toInt();
if(abs(top - currTop) > 3){
// new line started
if(currTop > 175){
// if not header -> append
qDebug() << dayList;
tmpEvents.append(dayList);
}
dayList.clear();
while (dayList.length() < 7) {
dayList.append("");
}
currTop = top;
}
if(attributes.hasAttribute("left")){
int left = attributes.value("left").toInt();
QString text = xmlReader->readElementText(QXmlStreamReader::IncludeChildElements);
qDebug() << text;
for(int i = 0;i<7;i++){
//qDebug() << i << left << abs(left - eventXmlPositions[i]);
if(abs(left - eventXmlPositions[i]) < 30){
dayList[i] = text;
//qDebug() << i << left << text << dayList << left << abs(left - eventXmlPositions[i]);
}
}
}
else {
qDebug() << " no left";
}
}
else {
qDebug() << " no top";
}
}
}
}
this->m_events = tmpEvents;
if(xmlReader->hasError()) {
qDebug() << "xmlFile.xml Parse Error" << xmlReader->errorString();
//return(900);
}
//close reader and flush file
xmlReader->clear();
xmlFile->close();
*/
}
int ServerConn::getFoodPlan()
{
// set the progress to 0
this->progress = 0;
// Call the webservice
QNetworkRequest request(QUrl("http://www.treffpunkt-fanny.de/fuer-schueler-und-lehrer/speiseplan.html"));
request.setHeader(QNetworkRequest::ContentTypeHeader,
"application/x-www-form-urlencoded");
// send a GET request to the treffpunkt fanny server
QNetworkReply* reply;
reply = this->networkManager->get(request);
// update the progress during the request
connect(reply, SIGNAL(downloadProgress(qint64, qint64)),
this, SLOT(updateProgress(qint64, qint64)));
// loop to wait until the request has finished before processing the data
QEventLoop loop;
// timer to cancel the request after 3 seconds
QTimer timer;
timer.setSingleShot(true);
// quit the loop when the request finised
loop.connect(this->networkManager, SIGNAL(finished(QNetworkReply*)), SLOT(quit()));
// or the timer timed out
loop.connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
// start the timer
timer.start(2000);
// start the loop
loop.exec();
// get the status code
QVariant status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
// set the progress to 1
this->progress = 1;
if(status_code != 200){
// if the request didn't result in a success, return the error code
// if the request failed but there is still old data available
if(!this->m_weekplan.isEmpty()){
// set the status code to 902 (old data)
status_code = 902;
}
return(status_code.toInt());
}
// initialize the weekplan to store information to it
QList<QList<QString>> temp_weekplan;
// m_weekplan is a list, that contains a list for each day, which contains: cookteam, date, main dish, vagi main dish, garnish(Beilage) and Dessert.
// read the whole website
QString returnedData = QString::fromUtf8(reply->readAll());
// remove unnecessary stuff
returnedData.replace("\n","");
returnedData.replace("\r","");
returnedData.replace("\t","");
// workaround for changing html syntax
returnedData.replace("style=\"width: 25%;\"", "width=\"25%\"");
// split the string at the beginning of the tables
QStringList documentList = returnedData.split( "<table class=\"speiseplan\">" );
// enshure that the data is valid
if(documentList.length() < 2){
return(900);
}
//---------- prepare the table of the first week ----------
QString table1 = documentList[1];
// enshure that the data is valid
if(table1.split( "</table>" ).length() < 1){
return(900);
}
// remove everything after "</table>"
table1 = table1.split( "</table>" )[0];
// remove "<tbody><tr style=\"border: 1px solid #999;\" align=\"center\" valign=\"top\">" at the beginning
table1.remove(0,71);
//remove "</tr></tbody>" at the end
table1 = table1.left(table1.length() - 13);
//split at the days to get a list of all days
QStringList table1list = table1.split("<td width=\"25%\">");
// enshure that the data is valid
if(table1list.length() < 5){
return(900);
}
//remove the first item, as it is empty
table1list.takeFirst();
//---------- prepare the table of the second week ----------
QString table2 = documentList[2];
// enshure that the data is valid
if(table2.split( "</table>" ).length() < 1){
return(900);
}
//remove everything after "</table>"
table2 = table2.split( "</table>" )[0];
//remove "<tbody><tr align=\"center\" valign=\"top\">" at the beginning
table2.remove(0,39);
//remove "</tr></tbody>" at the end
table2.remove(table2.length() - 13, table2.length());
//split at the days to get a list of all days
QStringList table2list = table2.split("<td width=\"25%\">");
// enshure that the data is valid
if(table2list.length() < 5){
return(900);
}
//remove the first item, as it is empty
table2list.takeFirst();
//---------- put both weeks into one big list ----------
QStringList weeklist = table1list + table2list;
//---------- go through all days and split the day-string into the different types of information ----------
for (int i = 0; i <=7; i ++){
if(i > weeklist.length()){
// if the loop exceeds the length of the wweklist some kind of eror occured
return 900;
}
// store item temporarly to edit it
QString day = weeklist[i];
// remove "</td>" at the and of the Item
day = day.left(day.length()-5);
// table list[i] looks now like: | clould be:
// <strong>cookteam</strong> | <strong>Red Hot Chili Peppers</strong>
// <br /> | <br />
// <strong>date</strong> | <strong>26.06.2018</strong>
// <hr />mainDish | <hr />Gulasch mit Kartoffeln
// <hr />mainDishVeg | <hr />Pellkartoffeln mit Quark
// <hr />garnish | <hr />Gemischter Salat
// <hr />dessert</td> | <hr />Eaton Mess ( Erdbeer-Nachtisch )</td>
// split item at strong, to get the cookteam and the date
QStringList daylist = day.split("<strong>");
day = "";
// convert the list to a big string
for (int i = 0; i <= 2; i ++){
if(i <= daylist.length()){
day += daylist[i];
}
}
day.replace("<br />","");
daylist = day.split("</strong>");
// store cookteam and date in the temp_weekplan
//temp_weekplan.append({daylist[0], daylist[1]});
// store information in day
// (looks like: "<hr />MainDish<hr />MainDishVeg<hr />Garnish<hr />Dessert")
// (could be: "<hr />Gulasch mit Kartoffeln<hr />Pellkartoffeln mit Quark<hr />Gemischter Salat<hr />Eaton Mess ( Erdbeer-Nachtisch )")
day = daylist.takeLast();
// seperate the information
daylist.append(day.split("<hr />"));
// remove the item that is emplty from the list
daylist.removeAt(2);
//---------- check if the day is aleady over ----------
// get the datestring
QString dateString = daylist[1];
// convert it to a valid QDate
QDateTime date = QDateTime::fromString(dateString,"dd.MM.yyyy");
// get the current date and time
QDateTime currentDateTime = QDateTime::currentDateTimeUtc();
// check if the given day is still in the future or today (then it is valid)
if(date.toTime_t() > currentDateTime.toTime_t() || date.date() == currentDateTime.date()){
// add the rest of the information to the temp_weekplan
qDebug() << "day valid:" << daylist;
//---------- convert the date to a readable string ----------
QString readableDateString;
if(date.date() == currentDateTime.date()){
// the given day is today
readableDateString = "Heute";
}
else if (date.toTime_t() < ( currentDateTime.toTime_t() + ( 24 * 60 * 60 ))) {
// the given day is tomorrow
readableDateString = "Morgen";
}
else {
readableDateString = date.toString("dddd, d.M.yy");
}
qDebug() << readableDateString;
// insert the redable tring into the daylist
daylist[1] = readableDateString;
// append the day to the weeklist
temp_weekplan.append({daylist[0], daylist[1], daylist[2], daylist[3], daylist[4], daylist[5]});
}
}
// write data to global foodplan
this->m_weekplan = temp_weekplan;
// check if there is any valid data
if(this->m_weekplan.isEmpty()){
// no data
return(901);
}
// success
return(200);
}
ReturnData_t ServerConn::senddata(QUrl serviceUrl, QUrlQuery pdata)
{
ReturnData_t ret; //this is a custom type to store the returned data
// Call the webservice
QNetworkRequest request(serviceUrl);
QAuthenticator authenticator;
authenticator.setUser("ZedlerDo");
authenticator.setPassword("LxyJQB");
request.setHeader(QNetworkRequest::ContentTypeHeader,
"application/x-www-form-urlencoded");
//set ssl configuration
//send a POST request with the given url and data to the server
QNetworkReply* reply;
reply = this->networkManager->post(request, pdata.toString(QUrl::FullyEncoded).toUtf8());
//wait until the request has finished
QEventLoop loop;
loop.connect(this->networkManager, SIGNAL(finished(QNetworkReply*)), SLOT(quit()));
loop.exec();
//get the status code
QVariant status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
ret.status_code = status_code.toInt();
if(ret.status_code == 0){ //if tehstatus code is zero, the connecion to the server was not possible
ret.status_code = 444;
}
//get the full text response
ret.text = QString::fromUtf8(reply->readAll());
//return the data
return(ret);
}
QString ServerConn::getState() {
return(this->state);
}
void ServerConn::setState(QString state) {
this->state = state;
this->stateChanged(this->state);
}
ServerConn::~ServerConn()
{
qDebug("serverconn destruktor");
delete this->networkManager;
delete this->refreshNetworkManager;
QString path = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
QDir dir(path + "/.fannyapp-tmp");
dir.removeRecursively();
}