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added dns discovery

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This commit is contained in:
marcel 2014-06-30 20:05:01 +02:00
parent cc02f7f55f
commit 8b34315f49
2 changed files with 99 additions and 11 deletions
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97
widget/form/addfriendform.cpp
View File

@ -1,9 +1,14 @@
#include "addfriendform.h"
#include "ui_widget.h"
#include <QFont>
AddFriendForm::AddFriendForm()
#include <QFont>
#include <QMessageBox>
#define TOX_ID_SIZE 76
AddFriendForm::AddFriendForm() : dns(this)
{
dns.setType(QDnsLookup::TXT);
main = new QWidget(), head = new QWidget();
QFont bold;
bold.setBold(true);
@ -25,6 +30,13 @@ AddFriendForm::AddFriendForm()
headLayout.addWidget(&headLabel);
connect(&sendButton, SIGNAL(clicked()), this, SLOT(onSendTriggered()));
connect(&dns, SIGNAL(finished()), this, SLOT(handleDnsLookup()));
}
AddFriendForm::~AddFriendForm()
{
head->deleteLater();
main->deleteLater();
}
void AddFriendForm::show(Ui::Widget &ui)
@ -35,13 +47,80 @@ void AddFriendForm::show(Ui::Widget &ui)
head->show();
}
bool AddFriendForm::isToxId(const QString &value) const
{
const QRegularExpression hexRegExp("^[A-Fa-f0-9]+$");
return value.length() == TOX_ID_SIZE && value.contains(hexRegExp);
}
void AddFriendForm::showWarning(const QString &message) const
{
QMessageBox warning(main);
warning.setText(message);
warning.setIcon(QMessageBox::Warning);
warning.exec();
}
QString AddFriendForm::getMessage() const
{
const QString msg = message.toPlainText();
return !msg.isEmpty() ? msg : "Tox me maybe?";
}
void AddFriendForm::onSendTriggered()
{
QString id = toxId.text(), msg = message.toPlainText();
if (id.isEmpty())
return;
if (msg.isEmpty())
msg = "Tox me maybe?";
const QString id = toxId.text().trimmed();
emit friendRequested(id, msg);
if (id.isEmpty()) {
showWarning("Please fill in a valid Tox ID");
} else if (isToxId(id)) {
emit friendRequested(id, getMessage());
} else {
dns.setName(id);
dns.lookup();
}
}
void AddFriendForm::handleDnsLookup()
{
const QString idKeyWord("id=");
if (dns.error() != QDnsLookup::NoError) {
showWarning("Error while looking up DNS");
return;
}
const QList<QDnsTextRecord> textRecords = dns.textRecords();
if (textRecords.length() != 1) {
showWarning("Unexpected number of text records");
return;
}
const QList<QByteArray> textRecordValues = textRecords.first().values();
if (textRecordValues.length() != 1) {
showWarning("Unexpected number of values in text record");
return;
}
const QString entry(textRecordValues.first());
int idx = entry.indexOf(idKeyWord);
if (idx < 0) {
showWarning("The DNS lookup does not contain any Tox ID");
return;
}
idx += idKeyWord.length();
if (entry.length() < idx + static_cast<int>(TOX_ID_SIZE)) {
showWarning("The DNS lookup does not contain a valid Tox ID");
return;
}
const QString friendAdress = entry.mid(idx, TOX_ID_SIZE);
if (!isToxId(friendAdress)) {
showWarning("The DNS lookup does not contain a valid Tox ID");
return;
}
// finally we got it
emit friendRequested(friendAdress, getMessage());
}

13
widget/form/addfriendform.h
View File

@ -1,27 +1,33 @@
#ifndef ADDFRIENDFORM_H
#define ADDFRIENDFORM_H
#include "ui_widget.h"
#include <QVBoxLayout>
#include <QLabel>
#include <QLineEdit>
#include <QTextEdit>
#include <QPushButton>
#include "ui_widget.h"
#include <QDnsLookup>
class AddFriendForm : public QObject
{
Q_OBJECT
public:
AddFriendForm();
~AddFriendForm();
void show(Ui::Widget& ui);
bool isToxId(const QString& value) const;
void showWarning(const QString& message) const;
QString getMessage() const;
signals:
void friendRequested(const QString& friendAddress, const QString& message);
private slots:
void onSendTriggered();
void handleDnsLookup();
private:
QLabel headLabel, toxIdLabel, messageLabel;
@ -30,6 +36,9 @@ private:
QTextEdit message;
QVBoxLayout layout, headLayout;
QWidget *head, *main;
/** will be used for dns discovery if necessary */
QDnsLookup dns;
};
#endif // ADDFRIENDFORM_H