First commit

.gitignore

@@ -0,0 +1,74 @@
+# This file is used to ignore files which are generated
+# ----------------------------------------------------------------------------
+
+*~
+*.autosave
+*.a
+*.core
+*.moc
+*.o
+*.obj
+*.orig
+*.rej
+*.so
+*.so.*
+*_pch.h.cpp
+*_resource.rc
+*.qm
+.#*
+*.*#
+core
+!core/
+tags
+.DS_Store
+.directory
+*.debug
+Makefile*
+*.prl
+*.app
+moc_*.cpp
+ui_*.h
+qrc_*.cpp
+Thumbs.db
+*.res
+*.rc
+/.qmake.cache
+/.qmake.stash
+
+# qtcreator generated files
+*.pro.user*
+
+# xemacs temporary files
+*.flc
+
+# Vim temporary files
+.*.swp
+
+# Visual Studio generated files
+*.ib_pdb_index
+*.idb
+*.ilk
+*.pdb
+*.sln
+*.suo
+*.vcproj
+*vcproj.*.*.user
+*.ncb
+*.sdf
+*.opensdf
+*.vcxproj
+*vcxproj.*
+
+# MinGW generated files
+*.Debug
+*.Release
+
+# Python byte code
+*.pyc
+
+# Binaries
+# --------
+*.dll
+*.exe
+
+build*/

CMakeLists.txt

@@ -0,0 +1,95 @@
+cmake_minimum_required(VERSION 3.13.5)
+
+project(xxcc VERSION 0.1 LANGUAGES CXX)
+
+add_compile_options(-fdata-sections -ffunction-sections)
+
+set(QT_VERSION_MAJOR 5)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOUIC ON)
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+
+# QXmpp requires C++17.
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(QT NAMES Qt6 Qt5 COMPONENTS Widgets Sql REQUIRED)
+find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Widgets Sql REQUIRED)
+
+set(PROJECT_SOURCES
+    account.cpp
+    account.ui
+    accounts.cpp
+    accounts.ui
+    client.cpp
+    contact.cpp
+    contact.ui
+    contacts.cpp
+    contacts.ui
+    conversation.cpp
+    conversation.ui
+    credentials.cpp
+    jiddb.cpp
+    login.cpp
+    login.ui
+    main.cpp
+    message.cpp
+    message.ui
+    xxcc.cpp
+    xxcc.ui
+)
+
+if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
+    qt_add_executable(${PROJECT_NAME}
+        MANUAL_FINALIZATION
+        ${PROJECT_SOURCES}
+    )
+# Define target properties for Android with Qt 6 as:
+#    set_property(TARGET ${PROJECT_NAME} APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
+#                 ${CMAKE_CURRENT_SOURCE_DIR}/android)
+# For more information, see https://doc.qt.io/qt-6/qt-add-executable.html#target-creation
+else()
+    if(ANDROID)
+        add_library(${PROJECT_NAME} SHARED
+            ${PROJECT_SOURCES}
+        )
+# Define properties for Android with Qt 5 after find_package() calls as:
+#    set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
+    else()
+        add_executable(${PROJECT_NAME}
+            ${PROJECT_SOURCES}
+        )
+    endif()
+endif()
+
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(qca REQUIRED IMPORTED_TARGET qca2-qt${QT_VERSION_MAJOR})
+target_link_libraries(${PROJECT_NAME} PRIVATE PkgConfig::qca)
+
+find_package(Qt5Keychain REQUIRED)
+target_link_libraries(${PROJECT_NAME} PRIVATE Qt5Keychain::Qt5Keychain)
+
+target_link_libraries(${PROJECT_NAME} PRIVATE
+    Qt${QT_VERSION_MAJOR}::Widgets
+    Qt${QT_VERSION_MAJOR}::Sql)
+
+target_link_options(${PROJECT_NAME} PRIVATE -Wl,--gc-sections)
+
+set_target_properties(${PROJECT_NAME} PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+if(QT_VERSION_MAJOR EQUAL 6)
+    qt_finalize_executable(${PROJECT_NAME})
+endif()
+
+add_subdirectory(qxmpp)
+
+#target_compile_definitions(${PROJECT_NAME} PUBLIC QT_NO_KEYWORDS)
+target_compile_options(${PROJECT_NAME} PUBLIC -Wall)

README.md

@@ -0,0 +1,3 @@
+```
+# apt install qtkeychain-qt5-dev qttools5-dev-tools qtbase5-dev
+```

account.cpp

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+#include "account.h"
+
+Account::Account(Client *const c, QListWidget *const list,
+    QWidget *const parent) :
+    QWidget(parent)
+{
+    const auto it = new QListWidgetItem(list);
+    const auto w = new QWidget;
+
+    ui.setupUi(w);
+    ui.jid->setText(c->configuration().jidBare());
+    ui.connected->setChecked(
+        c->state() == Client::State::ConnectedState);
+
+    connect(c, &Client::stateChanged, this,
+    [this] (const Client::State state)
+    {
+        ui.connected->setChecked(
+            state == Client::State::ConnectedState);
+    });
+
+    it->setSizeHint(w->sizeHint());
+    list->addItem(it);
+    list->setItemWidget(it, w);
+}

account.h

@@ -0,0 +1,18 @@
+#ifndef ACCOUNT_H
+#define ACCOUNT_H
+
+#include "client.h"
+#include "ui_account.h"
+#include <QListWidget>
+#include <QWidget>
+
+class Account : public QWidget
+{
+public:
+    Account(Client *c, QListWidget *list, QWidget *parent = nullptr);
+
+private:
+    Ui_account ui;
+};
+
+#endif

account.ui

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>account</class>
+ <widget class="QWidget" name="account">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>139</width>
+    <height>36</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QHBoxLayout" name="horizontalLayout_2">
+   <item>
+    <widget class="QLabel" name="jid">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="text">
+      <string/>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="alias">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="text">
+      <string/>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QCheckBox" name="connected">
+     <property name="enabled">
+      <bool>false</bool>
+     </property>
+     <property name="text">
+      <string>Connected</string>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

accounts.cpp

@@ -0,0 +1,39 @@
+#include "accounts.h"
+#include "account.h"
+#include "login.h"
+#include <utility>
+#include <QListWidgetItem>
+#include <QScroller>
+
+Accounts::Accounts(const QList<Client *> &accounts,
+    QWidget *const parent) :
+    QDialog(parent)
+{
+    ui.setupUi(this);
+    QScroller::grabGesture(ui.accounts_list, QScroller::TouchGesture);
+
+    for (const auto &a : accounts)
+        add(a);
+
+    connect(ui.add, &QPushButton::released, this,
+    [this]
+    {
+        Login l(this);
+
+        l.connect(&l, &Login::auth_success, this,
+        [this] (Client *c)
+        {
+            add(c);
+            Q_EMIT new_account(c);
+        });
+
+        l.exec();
+    });
+
+    showMaximized();
+}
+
+void Accounts::add(Client *c)
+{
+    new Account(c, ui.accounts_list, this);
+}

accounts.h

@@ -0,0 +1,26 @@
+#ifndef ACCOUNTS_H
+#define ACCOUNTS_H
+
+#include "client.h"
+#include "ui_accounts.h"
+#include <QDialog>
+#include <QWidget>
+#include <QVBoxLayout>
+#include <QString>
+
+class Accounts : public QDialog
+{
+    Q_OBJECT
+
+public:
+    Accounts(const QList<Client *> &accounts, QWidget *parent = nullptr);
+
+Q_SIGNALS:
+    void new_account(Client *c);
+
+private:
+    void add(Client *c);
+    Ui_accounts ui;
+};
+
+#endif

accounts.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>accounts</class>
+ <widget class="QDialog" name="accounts">
+  <property name="windowModality">
+   <enum>Qt::ApplicationModal</enum>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>188</width>
+    <height>215</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+    <horstretch>100</horstretch>
+    <verstretch>100</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="windowTitle">
+   <string>xxcc - Accounts</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <widget class="QPushButton" name="close">
+     <property name="maximumSize">
+      <size>
+       <width>32</width>
+       <height>16777215</height>
+      </size>
+     </property>
+     <property name="text">
+      <string>&lt;</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p align=&quot;center&quot;&gt;&lt;span style=&quot; font-size:12pt; font-weight:600;&quot;&gt;Accounts&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QListWidget" name="accounts_list">
+     <property name="verticalScrollMode">
+      <enum>QAbstractItemView::ScrollPerPixel</enum>
+     </property>
+     <property name="horizontalScrollMode">
+      <enum>QAbstractItemView::ScrollPerPixel</enum>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QPushButton" name="rm">
+       <property name="enabled">
+        <bool>false</bool>
+       </property>
+       <property name="text">
+        <string>Remove</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="add">
+       <property name="text">
+        <string>Add</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>close</sender>
+   <signal>released()</signal>
+   <receiver>accounts</receiver>
+   <slot>close()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>48</x>
+     <y>147</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>138</x>
+     <y>86</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

client.cpp

@@ -0,0 +1,8 @@
+#include "client.h"
+#include <QXmppMamManager.h>
+
+Client::Client(QObject *const parent) :
+    QXmppClient(parent)
+{
+    // addExtension(new QXmppMamManager);
+}

client.h

@@ -0,0 +1,12 @@
+#ifndef CLIENT_H
+#define CLIENT_H
+
+#include <QXmppClient.h>
+
+class Client : public QXmppClient
+{
+public:
+    Client(QObject *parent = nullptr);
+};
+
+#endif

contact.cpp

@@ -0,0 +1,16 @@
+#include "contact.h"
+
+Contact::Contact(const QString &own, const QString &other,
+    QListWidget *const list, QWidget *const parent) :
+    QListWidgetItem(list),
+    QWidget(parent),
+    own(own),
+    other(other)
+{
+    ui.setupUi(this);
+    ui.own_jid->setText(own);
+    ui.contact_jid->setText(other);
+    QListWidgetItem::setSizeHint(QWidget::sizeHint());
+    list->addItem(this);
+    list->setItemWidget(this, this);
+}

contact.h

@@ -0,0 +1,20 @@
+#ifndef CONTACT_H
+#define CONTACT_H
+
+#include "ui_contact.h"
+#include <QListWidgetItem>
+#include <QString>
+#include <QWidget>
+
+class Contact : public QListWidgetItem, public QWidget
+{
+public:
+    Contact(const QString &own, const QString &other,
+        QListWidget *list, QWidget *parent = nullptr);
+    const QString own, other;
+
+private:
+    Ui_contact ui;
+};
+
+#endif

contact.ui

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>contact</class>
+ <widget class="QWidget" name="contact">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>117</width>
+    <height>60</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QHBoxLayout" name="horizontalLayout">
+   <item>
+    <widget class="QLabel" name="picture">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="text">
+      <string>Picture</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <item>
+      <widget class="QLabel" name="contact_jid">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string>Contact</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="own_jid">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string>Own</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

contacts.cpp

@@ -0,0 +1,50 @@
+#include "contacts.h"
+#include "contact.h"
+#include <QListWidgetItem>
+#include <QScroller>
+
+Contacts::Contacts(QList<JidDb *> &databases, QWidget *const parent) :
+    QDialog(parent),
+    databases(databases)
+{
+    ui.setupUi(this);
+    QScroller::grabGesture(ui.contacts_list, QScroller::TouchGesture);
+
+    for (const auto db : databases)
+        for (const auto &contact : db->roster())
+            add(db->jid, contact);
+
+    connect(ui.contacts_list, &QListWidget::itemActivated, this,
+    [this]
+    {
+        ui.chat->setEnabled(true);
+    });
+
+    connect(ui.chat, &QPushButton::released, this,
+    [this]
+    {
+        const auto items = ui.contacts_list->selectedItems();
+
+        if (items.isEmpty())
+        {
+            ui.chat->setEnabled(false);
+            return;
+        }
+
+        for (const auto it : items)
+        {
+            const auto c = static_cast<Contact *>(it);
+
+            Q_EMIT startChat(c->own, c->other);
+        }
+
+        close();
+    });
+
+    showMaximized();
+}
+
+void Contacts::add(const QString &own, const QString &other)
+{
+    new Contact(own, other, ui.contacts_list);
+}

contacts.h

@@ -0,0 +1,28 @@
+#ifndef CONTACTS_H
+#define CONTACTS_H
+
+#include "ui_contacts.h"
+#include "jiddb.h"
+#include <QDialog>
+#include <QList>
+#include <QString>
+#include <QWidget>
+
+class Contacts : public QDialog
+{
+    Q_OBJECT
+
+public:
+    Contacts(QList<JidDb *> &databases, QWidget *parent = nullptr);
+    void add(const QString &own, const QString &other);
+
+private:
+    Ui_contacts ui;
+    QList<JidDb *> &databases;
+    enum Role {From = Qt::UserRole, To};
+
+Q_SIGNALS:
+    void startChat(QString from, QString to);
+};
+
+#endif

contacts.ui

@@ -0,0 +1,114 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>contacts</class>
+ <widget class="QDialog" name="contacts">
+  <property name="windowModality">
+   <enum>Qt::ApplicationModal</enum>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>278</width>
+    <height>215</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+    <horstretch>100</horstretch>
+    <verstretch>100</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="windowTitle">
+   <string>xxcc - Contacts</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <widget class="QPushButton" name="close">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="maximumSize">
+      <size>
+       <width>32</width>
+       <height>16777215</height>
+      </size>
+     </property>
+     <property name="text">
+      <string>&lt;</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p align=&quot;center&quot;&gt;&lt;span style=&quot; font-size:12pt; font-weight:600;&quot;&gt;Contacts&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QListWidget" name="contacts_list">
+     <property name="verticalScrollMode">
+      <enum>QAbstractItemView::ScrollPerPixel</enum>
+     </property>
+     <property name="horizontalScrollMode">
+      <enum>QAbstractItemView::ScrollPerPixel</enum>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QPushButton" name="rm">
+       <property name="enabled">
+        <bool>false</bool>
+       </property>
+       <property name="text">
+        <string>Remove</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="add">
+       <property name="text">
+        <string>Add</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="chat">
+       <property name="enabled">
+        <bool>false</bool>
+       </property>
+       <property name="text">
+        <string>Chat</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>close</sender>
+   <signal>released()</signal>
+   <receiver>contacts</receiver>
+   <slot>close()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>48</x>
+     <y>147</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>183</x>
+     <y>86</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

conversation.cpp

@@ -0,0 +1,14 @@
+#include "conversation.h"
+
+Conversation::Conversation(const QString &from, const QString &to,
+    QListWidget *const list, QWidget *const parent) :
+    QWidget(parent),
+    it(list)
+{
+    ui.setupUi(this);
+    ui.account->setText(from);
+    ui.contact->setText(to);
+    it.setSizeHint(sizeHint());
+    list->addItem(&it);
+    list->setItemWidget(&it, this);
+}

conversation.h

@@ -0,0 +1,21 @@
+#ifndef CONVERSATION_H
+#define CONVERSATION_H
+
+#include "ui_conversation.h"
+#include <QListWidget>
+#include <QListWidgetItem>
+#include <QWidget>
+
+class Conversation : public QWidget
+{
+public:
+    Conversation(const QString &from, const QString &to,
+        QListWidget *list, QWidget *parent = nullptr);
+    void setText(const QString &msg);
+
+private:
+    Ui_conversation ui;
+    QListWidgetItem it;
+};
+
+#endif

conversation.ui

@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>conversation</class>
+ <widget class="QWidget" name="conversation">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>195</width>
+    <height>86</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QHBoxLayout" name="horizontalLayout">
+   <item>
+    <widget class="QLabel" name="picture">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="text">
+      <string>Picture</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <item>
+      <widget class="QLabel" name="account">
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="contact">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="message">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QLabel" name="time">
+     <property name="text">
+      <string/>
+     </property>
+     <property name="alignment">
+      <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

credentials.cpp

@@ -0,0 +1,103 @@
+#include "credentials.h"
+#include <QEventLoop>
+#include <qt5keychain/keychain.h>
+#include <QXmppConfiguration.h>
+#include <iostream>
+
+static const QString service = "xxcc", sep = ";";
+
+QList<Credentials::Pair> Credentials::load()
+{
+    const QStringList users = storedUsers();
+    QList<Pair> ret;
+
+    for (const auto &user : users)
+    {
+        QKeychain::ReadPasswordJob job(service);
+        QEventLoop loop;
+
+        job.setKey(user);
+        job.connect(&job, &QKeychain::Job::finished, &loop, &QEventLoop::quit);
+        job.start();
+        loop.exec();
+
+        const QString pwd = job.textData();
+
+        if (job.error())
+            std::cerr << "Failed to retrieve password for " << qPrintable(user)
+                << ": " << qPrintable(job.errorString()) << std::endl;
+        else
+            ret.append(Pair(user, pwd));
+    }
+
+    return ret;
+}
+
+void Credentials::store(Client *c)
+{
+    QKeychain::WritePasswordJob job(service);
+    const QXmppConfiguration &cfg = c->configuration();
+    const QString user = cfg.jidBare();
+    QEventLoop loop;
+
+    job.setKey(user);
+    job.setTextData(cfg.password());
+    job.connect(&job, &QKeychain::Job::finished, &loop, &QEventLoop::quit);
+    job.start();
+    loop.exec();
+
+    if (job.error())
+        std::cerr << "Failed to store password: "
+            << qPrintable(job.errorString()) << std::endl;
+    else
+        storeUser(user);
+}
+
+void Credentials::storeUser(const QString &user)
+{
+    QString list = storedUsersList();
+    QKeychain::WritePasswordJob job(service);
+    QEventLoop loop;
+
+    if (!list.isEmpty())
+        list += sep;
+
+    list += user;
+
+    job.setKey("users");
+    job.setTextData(list);
+    job.connect(&job, &QKeychain::Job::finished, &loop, &QEventLoop::quit);
+    job.start();
+    loop.exec();
+
+    if (job.error())
+        std::cerr << "Failed to store user: "
+            << qPrintable(job.errorString()) << std::endl;
+}
+
+QString Credentials::storedUsersList()
+{
+    QKeychain::ReadPasswordJob job(service);
+    QString ret;
+    QEventLoop loop;
+
+    job.setKey("users");
+    job.connect(&job, &QKeychain::Job::finished, &loop, &QEventLoop::quit);
+    job.start();
+    loop.exec();
+
+    const QString users = job.textData();
+
+    if (job.error())
+        std::cerr << "Failed to retrieve users: "
+            << qPrintable(job.errorString()) << std::endl;
+    else
+        ret = users;
+
+    return ret;
+}
+
+QStringList Credentials::storedUsers()
+{
+    return storedUsersList().split(sep);
+}

credentials.h

@@ -0,0 +1,26 @@
+#ifndef CREDENTIALS_H
+#define CREDENTIALS_H
+
+#include "client.h"
+#include <QObject>
+#include <QList>
+#include <QPair>
+#include <QStringList>
+
+class Credentials : public QObject
+{
+    Q_OBJECT
+public:
+    using Pair = QPair<QString, QString>;
+    QList<Pair> load();
+
+public Q_SLOTS:
+    void store(Client *c);
+
+private:
+    static void storeUser(const QString &user);
+    static QString storedUsersList();
+    static QStringList storedUsers();
+};
+
+#endif

jiddb.cpp

@@ -0,0 +1,125 @@
+#include "jiddb.h"
+#include <QDir>
+#include <QSqlQuery>
+#include <QStandardPaths>
+#include <QTimeZone>
+#include <QVariant>
+#include <iostream>
+#include <stdexcept>
+
+JidDb::JidDb(const QString &jid) :
+    jid(jid),
+    db(QSqlDatabase::addDatabase("QSQLITE"))
+{
+    const auto path = QStandardPaths::writableLocation(
+            QStandardPaths::AppDataLocation);
+    const QDir dir;
+
+    if (!dir.exists(path) && !dir.mkdir(path))
+        throw std::runtime_error("Failed to create app dir");
+
+    const auto abspath = path + "/" + jid + ".db";
+
+    db.setDatabaseName(abspath);
+
+    if (!db.open())
+        throw std::runtime_error(qPrintable("database" + abspath
+            + "could not be created"));
+
+    QSqlQuery q(db);
+
+    if (!q.exec("create table if not exists roster "
+        "(jid TEXT unique) strict;"))
+        std::cerr << "JidDb::JidDb: query exec failed" << std::endl;
+}
+
+void JidDb::addToRoster(const QString &jid)
+{
+    QSqlQuery q(db);
+
+    if (!q.exec("insert or ignore into roster (jid) values ('" + jid + "');"))
+        throw std::runtime_error("JidDb::addToRoster: query exec failed");
+
+    Q_EMIT addedToRoster(jid);
+}
+
+void JidDb::addToRoster(const QStringList &roster)
+{
+    for (const auto &r : roster)
+        addToRoster(r);
+}
+
+QStringList JidDb::roster() const
+{
+    QStringList ret;
+    QSqlQuery q(db);
+
+    if (!q.exec("select jid from roster;"))
+        std::cerr << "query exec failed" << std::endl;
+    else
+        while (q.next())
+            ret.append(q.value("jid").toString());
+
+    return ret;
+}
+
+QList<JidDb::Message> JidDb::getMessages(const QString &jid,
+    const int tail) const
+{
+    QList<Message> ret;
+    QSqlQuery q(db);
+
+    if (tail < 0)
+    {
+        if (!q.exec("select * from " + jid + " order by time;"))
+            throw std::runtime_error("JidDb::getMessages: query exec failed");
+    }
+    else if (!q.exec("select * from " + jid + " order by time desc limit "
+        + QString::number(tail) + ";"))
+        throw std::runtime_error("JidDb::getMessages: query exec failed");
+
+
+    while (q.next())
+    {
+        Message m;
+        bool ok;
+        qlonglong t = q.value("time").toLongLong(&ok);
+
+        if (!ok)
+            throw std::runtime_error("JidDb::getMessages: invalid time");
+
+        m.body = q.value("body").toString();
+        m.dt = QDateTime::fromSecsSinceEpoch(t, QTimeZone::systemTimeZone());
+        ret << m;
+    }
+
+    return ret;
+}
+
+void JidDb::storeMessage(const JidDb::Message &msg)
+    const
+{
+    QSqlQuery q(db);
+    QString dir;
+
+    switch (msg.direction)
+    {
+        case Message::In:
+            dir = "in";
+            break;
+
+        case Message::Out:
+            dir = "out";
+            break;
+    }
+
+    if (!q.exec("create table if not exists '" + msg.contact +
+        "' (direction TEXT, time INTEGER, body TEXT) strict;"))
+        throw std::runtime_error("JidDb::storeMessage: query exec failed");
+    else if (!q.exec("insert into '" + msg.contact
+        + "' (direction, time, body) values "
+        "('" + dir + "', "
+        + QString::number(msg.dt.toSecsSinceEpoch()) + ", "
+        "'" + msg.body + "')"))
+        throw std::runtime_error("JidDb::storeMessage: query exec 2 failed");
+}

jiddb.h

@@ -0,0 +1,40 @@
+#ifndef JID_DB_H
+#define JID_DB_H
+
+#include <QDateTime>
+#include <QList>
+#include <QObject>
+#include <QString>
+#include <QStringList>
+#include <QSqlDatabase>
+
+class JidDb : public QObject
+{
+    Q_OBJECT
+
+public:
+    struct Message
+    {
+        enum Direction {In, Out} direction;
+        QDateTime dt;
+        QString contact, body;
+    };
+
+    JidDb(const QString &jid);
+    QStringList roster() const;
+    const QString jid;
+
+public Q_SLOTS:
+    QList<Message> getMessages(const QString &jid, int tail = -1) const;
+    void storeMessage(const Message &msg) const;
+    void addToRoster(const QString &jid);
+    void addToRoster(const QStringList &roster);
+
+Q_SIGNALS:
+    void addedToRoster(QString jid);
+
+private:
+    QSqlDatabase db;
+};
+
+#endif

login.cpp

@@ -0,0 +1,137 @@
+#include "login.h"
+#include "ui_login.h"
+#include <QString>
+#include "QXmppStanza.h"
+#include <memory>
+
+static QString error_to_str(const QXmppStanza::Error::Condition c)
+{
+    switch (c)
+    {
+        case QXmppStanza::Error::BadRequest:
+            return "BadRequest";
+        case QXmppStanza::Error::Conflict:
+            return "Conflict";
+        case QXmppStanza::Error::FeatureNotImplemented:
+            return "FeatureNotImplemented";
+        case QXmppStanza::Error::Forbidden:
+            return "Forbidden";
+        case QXmppStanza::Error::Gone:
+            return "Gone";
+        case QXmppStanza::Error::InternalServerError:
+            return "internal server error";
+        case QXmppStanza::Error::ItemNotFound:
+            return "item not found";
+        case QXmppStanza::Error::JidMalformed:
+            return "JID Malformed";
+        case QXmppStanza::Error::NotAcceptable:
+            return "not acceptable";
+        case QXmppStanza::Error::NotAllowed:
+            return "not allowed";
+        case QXmppStanza::Error::NotAuthorized:
+            return "not authorized";
+        case QXmppStanza::Error::RecipientUnavailable:
+            return "recipient unavailable";
+        case QXmppStanza::Error::Redirect:
+            return "Redirect";
+        case QXmppStanza::Error::RegistrationRequired:
+            return "RegistrationRequired";
+        case QXmppStanza::Error::RemoteServerNotFound:
+            return "RemoteServerNotFound";
+        case QXmppStanza::Error::RemoteServerTimeout:
+            return "RemoteServerTimeout";
+        case QXmppStanza::Error::ResourceConstraint:
+            return "ResourceConstraint";
+        case QXmppStanza::Error::ServiceUnavailable:
+            return "ServiceUnavailable";
+        case QXmppStanza::Error::SubscriptionRequired:
+            return "SubscriptionRequired";
+        case QXmppStanza::Error::UndefinedCondition:
+            return "UndefinedCondition";
+        case QXmppStanza::Error::UnexpectedRequest:
+            return "UnexpectedRequest";
+        case QXmppStanza::Error::PolicyViolation:
+            return "PolicyViolation";
+
+        default:
+            break;
+    }
+
+    return "UnknownError";
+}
+
+Login::Login(QDialog *const parent) :
+    QDialog(parent)
+{
+    ui.setupUi(this);
+    ui.error->setVisible(false);
+
+    connect(ui.login_b, &QPushButton::released,
+    [this]
+    {
+        const QString jid = ui.username->text(), pwd = ui.password->text();
+        QString domain, error;
+
+        if (!jid_is_valid(jid, domain))
+            error = tr("Invalid username");
+        else if (pwd.isEmpty())
+            error = tr("Invalid password");
+        else
+            setup(jid, pwd, domain);
+
+        ui.error->setText(error);
+        ui.error->setVisible(!error.isEmpty());
+    });
+
+    showMaximized();
+}
+
+bool Login::jid_is_valid(const QString &jid, QString &domain)
+{
+    if (jid.isEmpty() || jid.count('@') != 1)
+        return false;
+    else if ((domain = jid.mid(jid.indexOf('@') + 1)).isEmpty())
+        return false;
+
+    return true;
+}
+
+void Login::setup(const QString &jid, const QString pwd, const QString &domain)
+{
+    QXmppConfiguration cfg;
+
+    cfg.setStreamSecurityMode(QXmppConfiguration::TLSRequired);
+    cfg.setJid(jid);
+    cfg.setPassword(pwd);
+    cfg.setAutoReconnectionEnabled(false);
+
+    const auto client = new Client;
+
+    connect(client, &Client::stateChanged,
+    [d = domain, e = ui.error] (const Client::State state)
+    {
+        if (state == Client::ConnectingState)
+        {
+            e->setVisible(true);
+            e->setText(tr("Connecting to ") + d + "...");
+        }
+    });
+
+    connect(client, &Client::connected,
+    [this, client]
+    {
+        Q_EMIT auth_success(client);
+        close();
+    });
+
+    connect(client, &Client::disconnected,
+        [client, e = ui.error]
+        {
+            e->setText("Disconnected from server: "
+                + error_to_str(client->xmppStreamError()));
+            e->setVisible(true);
+            delete client;
+        });
+
+    client->connectToServer(cfg);
+}

login.h

@@ -0,0 +1,26 @@
+#ifndef LOGIN_H
+#define LOGIN_H
+
+#include "client.h"
+#include "ui_login.h"
+#include <QDialog>
+#include <QString>
+
+class Login : public QDialog
+{
+    Q_OBJECT
+
+public:
+    Login(QDialog *parent = nullptr);
+
+Q_SIGNALS:
+    void auth_success(Client *c);
+
+private:
+    void setup(const QString &jid, const QString pwd, const QString &domain);
+    static bool jid_is_valid(const QString &jid, QString &domain);
+    Ui_login ui;
+};
+
+
+#endif

login.ui

@@ -0,0 +1,140 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>login</class>
+ <widget class="QDialog" name="login">
+  <property name="windowModality">
+   <enum>Qt::ApplicationModal</enum>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>221</width>
+    <height>202</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="maximumSize">
+   <size>
+    <width>16777215</width>
+    <height>16777215</height>
+   </size>
+  </property>
+  <property name="windowTitle">
+   <string>Log into a XMPP server</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <item>
+      <widget class="QPushButton" name="close">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>32</width>
+         <height>16777215</height>
+        </size>
+       </property>
+       <property name="text">
+        <string>&lt;</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout_2">
+       <item>
+        <widget class="QLineEdit" name="username">
+         <property name="inputMethodHints">
+          <set>Qt::ImhEmailCharactersOnly|Qt::ImhNoAutoUppercase|Qt::ImhNoPredictiveText</set>
+         </property>
+         <property name="placeholderText">
+          <string>Enter JID</string>
+         </property>
+         <property name="clearButtonEnabled">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+     <item>
+      <widget class="QLineEdit" name="password">
+       <property name="inputMethodHints">
+        <set>Qt::ImhHiddenText|Qt::ImhNoAutoUppercase|Qt::ImhNoPredictiveText|Qt::ImhSensitiveData</set>
+       </property>
+       <property name="echoMode">
+        <enum>QLineEdit::Password</enum>
+       </property>
+       <property name="placeholderText">
+        <string>Enter password</string>
+       </property>
+       <property name="clearButtonEnabled">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="error">
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout">
+       <item>
+        <widget class="QPushButton" name="create_account">
+         <property name="text">
+          <string>Create account</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="login_b">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="text">
+          <string>Login</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>close</sender>
+   <signal>released()</signal>
+   <receiver>login</receiver>
+   <slot>close()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>86</x>
+     <y>71</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>161</x>
+     <y>51</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

main.cpp

@@ -0,0 +1,11 @@
+#include "xxcc.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    xxcc x;
+    x.show();
+    return a.exec();
+}

message.cpp

@@ -0,0 +1,46 @@
+#include "message.h"
+#include <Qt>
+
+Message::Message(const QString &msg, const QDateTime &dt,
+    const Message::Dir dir, QListWidget *const list,
+    QWidget *const parent) :
+    QWidget(parent),
+    it(list)
+{
+    ui.setupUi(this);
+    ui.edit->setVisible(false);
+    ui.quote->setVisible(false);
+    ui.retry->setVisible(false);
+
+    switch (dir)
+    {
+        case In:
+            ui.in_msg->setText(msg);
+            ui.out_msg->setVisible(false);
+            ui.time->setAlignment(Qt::AlignLeft);
+            break;
+
+        case Out:
+            ui.out_msg->setText(msg);
+            ui.in_msg->setVisible(false);
+            ui.time->setAlignment(Qt::AlignRight);
+            break;
+    }
+
+    ui.time->setText(dt.toString("ddd MMMM d yyyy hh:mm:ss"));
+    it.setSizeHint(sizeHint());
+
+    connect(list, &QListWidget::itemActivated,
+    [this] (QListWidgetItem *const item)
+    {
+        const bool visible = item == &it;
+
+        ui.edit->setVisible(visible);
+        ui.quote->setVisible(visible);
+        ui.retry->setVisible(visible);
+        it.setSizeHint(sizeHint());
+    });
+
+    list->addItem(&it);
+    list->setItemWidget(&it, this);
+}

message.h

@@ -0,0 +1,23 @@
+#ifndef MESSAGE_H
+#define MESSAGE_H
+
+#include "ui_message.h"
+#include <QDateTime>
+#include <QListWidgetItem>
+#include <QListWidget>
+#include <QWidget>
+
+class Message : public QWidget
+{
+public:
+    enum Dir {In, Out};
+    Message(const QString &msg, const QDateTime &dt,
+        Dir dir, QListWidget *list,
+        QWidget *parent = nullptr);
+
+private:
+    Ui_message ui;
+    QListWidgetItem it;
+};
+
+#endif

message.ui

@@ -0,0 +1,220 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>message</class>
+ <widget class="QWidget" name="message">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>278</width>
+    <height>100</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QPushButton" name="quote">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string>Quote</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="edit">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string>Edit</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="retry">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string>Retry</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QLabel" name="time">
+     <property name="text">
+      <string/>
+     </property>
+     <property name="alignment">
+      <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_2">
+     <item>
+      <spacer name="horizontalSpacer">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QLabel" name="out_msg">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>16777215</width>
+         <height>16777215</height>
+        </size>
+       </property>
+       <property name="palette">
+        <palette>
+         <active>
+          <colorrole role="Base">
+           <brush brushstyle="SolidPattern">
+            <color alpha="255">
+             <red>40</red>
+             <green>66</green>
+             <blue>62</blue>
+            </color>
+           </brush>
+          </colorrole>
+         </active>
+         <inactive>
+          <colorrole role="Base">
+           <brush brushstyle="SolidPattern">
+            <color alpha="255">
+             <red>40</red>
+             <green>66</green>
+             <blue>62</blue>
+            </color>
+           </brush>
+          </colorrole>
+         </inactive>
+         <disabled>
+          <colorrole role="Base">
+           <brush brushstyle="SolidPattern">
+            <color alpha="255">
+             <red>26</red>
+             <green>29</green>
+             <blue>31</blue>
+            </color>
+           </brush>
+          </colorrole>
+         </disabled>
+        </palette>
+       </property>
+       <property name="frameShape">
+        <enum>QFrame::StyledPanel</enum>
+       </property>
+       <property name="frameShadow">
+        <enum>QFrame::Raised</enum>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_3">
+     <item>
+      <widget class="QLabel" name="in_msg">
+       <property name="palette">
+        <palette>
+         <active>
+          <colorrole role="Base">
+           <brush brushstyle="SolidPattern">
+            <color alpha="255">
+             <red>21</red>
+             <green>83</green>
+             <blue>74</blue>
+            </color>
+           </brush>
+          </colorrole>
+         </active>
+         <inactive>
+          <colorrole role="Base">
+           <brush brushstyle="SolidPattern">
+            <color alpha="255">
+             <red>21</red>
+             <green>83</green>
+             <blue>74</blue>
+            </color>
+           </brush>
+          </colorrole>
+         </inactive>
+         <disabled>
+          <colorrole role="Base">
+           <brush brushstyle="SolidPattern">
+            <color alpha="255">
+             <red>26</red>
+             <green>29</green>
+             <blue>31</blue>
+            </color>
+           </brush>
+          </colorrole>
+         </disabled>
+        </palette>
+       </property>
+       <property name="frameShape">
+        <enum>QFrame::StyledPanel</enum>
+       </property>
+       <property name="frameShadow">
+        <enum>QFrame::Raised</enum>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="horizontalSpacer_2">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

qxmpp/CMakeLists.txt

@@ -0,0 +1,15 @@
+set(BUILD_SHARED OFF)
+set(BUILD_OMEMO ON)
+set(BUILD_TESTS OFF)
+add_subdirectory(qxmpp)
+target_link_libraries(xxcc PRIVATE
+    QXmppQt${QT_VERSION_MAJOR}
+    QXmppOmemoQt${QT_VERSION_MAJOR})
+target_include_directories(QXmppQt${QT_VERSION_MAJOR} PRIVATE
+    ${CMAKE_BINARY_DIR}/qxmpp/qxmpp/src)
+target_include_directories(${PROJECT_NAME} PRIVATE
+    ${CMAKE_BINARY_DIR}/qxmpp/qxmpp/src)
+target_include_directories(QXmppOmemoQt${QT_VERSION_MAJOR} PRIVATE
+    ${CMAKE_BINARY_DIR}/qxmpp/qxmpp/src/omemo)
+target_include_directories(${PROJECT_NAME} PRIVATE
+    ${CMAKE_BINARY_DIR}/qxmpp/qxmpp/src/omemo)

xxcc.cpp

@@ -0,0 +1,219 @@
+#include "xxcc.h"
+#include "client.h"
+#include "accounts.h"
+#include "contacts.h"
+#include "conversation.h"
+#include "message.h"
+#include <QXmppMessage.h>
+#include <QXmppRosterManager.h>
+#include <QXmppUtils.h>
+#include <QKeyEvent>
+#include <QPushButton>
+#include <QScroller>
+#include <stdexcept>
+#include <utility>
+
+xxcc::xxcc(QWidget *const parent) :
+    QWidget(parent),
+    selected(nullptr)
+{
+    const auto pairs = creds.load();
+
+    ui.setupUi(this);
+    QScroller::grabGesture(ui.conversations_list, QScroller::TouchGesture);
+    QScroller::grabGesture(ui.messages, QScroller::TouchGesture);
+    setupDatabases(pairs);
+    connectAccounts(pairs);
+    connect(ui.accounts, &QPushButton::released, this,
+    [this]
+    {
+        Accounts a(clients, this);
+
+        a.connect(&a, &Accounts::new_account, this, &xxcc::addAccount);
+        a.connect(&a, &Accounts::new_account, &creds, &Credentials::store);
+        a.exec();
+    });
+
+    connect(ui.contacts, &QPushButton::released, this,
+    [this]
+    {
+        Contacts c(databases, this);
+
+        connect(&c, &Contacts::startChat, this, &xxcc::startChat);
+
+        for (const auto db : databases)
+            c.connect(db, &JidDb::addedToRoster, &c,
+            [&c, db] (const QString jid)
+            {
+                c.add(db->jid, jid);
+            });
+
+        c.exec();
+    });
+
+    connect(ui.send, &QPushButton::released, this, &xxcc::send);
+    connect(ui.back, &QPushButton::released, this,
+    [this]
+    {
+        ui.sw->setCurrentIndex(static_cast<int>(Tab::Conversations));
+        ui.messages->clear();
+        selected = nullptr;
+    });
+
+    connect(ui.conversations_list, &QListWidget::itemActivated, this,
+    [this]
+    {
+        ui.sw->setCurrentIndex(static_cast<int>(Tab::Chat));
+    });
+
+    connect(ui.messages->model(), &QAbstractItemModel::rowsInserted,
+        ui.messages, &QListWidget::scrollToBottom);
+}
+
+xxcc::~xxcc()
+{
+    for (const auto c : clients)
+        delete c;
+
+    for (const auto db : databases)
+        delete db;
+}
+
+void xxcc::connectAccounts(const QList<Credentials::Pair> &pairs)
+{
+    for (const auto &p : pairs)
+    {
+        QXmppConfiguration cfg;
+
+        cfg.setStreamSecurityMode(QXmppConfiguration::TLSRequired);
+        cfg.setJid(p.first);
+        cfg.setPassword(p.second);
+        cfg.setAutoReconnectionEnabled(true);
+
+        const auto client = new Client;
+
+        addAccount(client);
+        client->connectToServer(cfg);
+    }
+}
+
+void xxcc::setupDatabases(const QList<Credentials::Pair> &pairs)
+{
+    for (const auto &p : pairs)
+        databases.append(new JidDb(p.first));
+}
+
+void xxcc::startChat(const QString from, const QString to)
+{
+    new Conversation(from, to, ui.conversations_list);
+
+    for (const auto c : clients)
+        if (from == c->configuration().jidBare())
+        {
+            selected = c;
+            break;
+        }
+
+    ui.sw->setCurrentIndex(static_cast<int>(Tab::Chat));
+    ui.jid->setText(to);
+    ui.messages->scrollToBottom();
+}
+
+void xxcc::addInMessage(const QXmppMessage &msg)
+{
+    new Message(msg.body(), msg.stamp().toLocalTime(), Message::In,
+        ui.messages);
+}
+
+void xxcc::addOutMessage(const QXmppMessage &msg)
+{
+    new Message(msg.body(), msg.stamp().toLocalTime(), Message::Out,
+        ui.messages);
+}
+
+void xxcc::addAccount(Client *const c)
+{
+    c->configuration().setAutoReconnectionEnabled(true);
+    clients.append(c);
+
+    c->connect(c, &Client::messageReceived, this,
+    [this] (QXmppMessage msg)
+    {
+        if (msg.body().isEmpty())
+            return;
+        else if (msg.stamp().isNull())
+            msg.setStamp(QDateTime::currentDateTimeUtc());
+
+        storeMessage(msg, JidDb::Message::Direction::In);
+
+        if (selected)
+            addInMessage(msg);
+    });
+
+    const auto roster = c->findExtension<QXmppRosterManager>();
+
+    if (roster)
+        roster->connect(roster, &QXmppRosterManager::rosterReceived, c,
+        [this, c, roster]
+        {
+            for (const auto db : databases)
+                if (db->jid == c->configuration().jidBare())
+                {
+                    db->addToRoster(roster->getRosterBareJids());
+                    break;
+                }
+        });
+    else
+        throw std::runtime_error("Expected non-null QXmppRosterManager");
+}
+
+void xxcc::send(void)
+{
+    if (!selected)
+        throw std::runtime_error("Expected non-null selected client");
+
+    const auto from = selected->configuration().jidBare(),
+        to = ui.jid->text(), msg = ui.chatinput->toPlainText();
+
+    QXmppMessage out(from, to, msg);
+
+    out.setStamp(QDateTime::currentDateTimeUtc());
+    selected->sendPacket(out);
+    addOutMessage(out);
+    storeMessage(out, JidDb::Message::Direction::Out);
+    ui.chatinput->clear();
+}
+
+void xxcc::storeMessage(const QXmppMessage &msg,
+    const enum JidDb::Message::Direction dir) const
+{
+    QString jid, contact;
+
+    switch (dir)
+    {
+        case JidDb::Message::Direction::In:
+            jid = QXmppUtils::jidToBareJid(msg.to());
+            contact = QXmppUtils::jidToBareJid(msg.from());
+            break;
+
+        case JidDb::Message::Direction::Out:
+            jid = msg.from();
+            contact = msg.to();
+            break;
+    }
+
+    for (const auto db : databases)
+    {
+        if (db->jid == jid)
+        {
+            JidDb::Message m;
+
+            m.body = msg.body();
+            m.dt = msg.stamp();
+            m.direction = dir;
+            m.contact = contact;
+            db->storeMessage(m);
+            break;
+        }
+    }
+}

xxcc.h

@@ -0,0 +1,43 @@
+#ifndef XXCC_H
+#define XXCC_H
+
+#include "ui_xxcc.h"
+#include "client.h"
+#include "credentials.h"
+#include "jiddb.h"
+#include <QDateTime>
+#include <QList>
+#include <QWidget>
+#include <QSqlDatabase>
+#include <QString>
+#include <QXmppMessage.h>
+
+class xxcc : public QWidget
+{
+    Q_OBJECT
+
+public:
+    xxcc(QWidget *parent = nullptr);
+    ~xxcc();
+
+private:
+    enum Tab {Conversations, Chat};
+    Ui_main ui;
+    QList<Client *> clients;
+    QList<JidDb *> databases;
+    Credentials creds;
+    Client *selected;
+    void setupDatabases(const QList<Credentials::Pair> &pairs);
+    void connectAccounts(const QList<Credentials::Pair> &pairs);
+    void storeMessage(const QXmppMessage &msg,
+        enum JidDb::Message::Direction dir) const;
+
+private Q_SLOTS:
+    void startChat(QString from, QString to);
+    void addInMessage(const QXmppMessage &msg);
+    void addOutMessage(const QXmppMessage &msg);
+    void addAccount(Client *c);
+    void send(void);
+};
+
+#endif

xxcc.ui

@@ -0,0 +1,247 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>main</class>
+ <widget class="QWidget" name="main">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>290</width>
+    <height>278</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+    <horstretch>100</horstretch>
+    <verstretch>100</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="windowTitle">
+   <string>xxcc</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <widget class="QStackedWidget" name="sw">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="sizeIncrement">
+      <size>
+       <width>13767</width>
+       <height>13767</height>
+      </size>
+     </property>
+     <property name="currentIndex">
+      <number>0</number>
+     </property>
+     <widget class="QWidget" name="conversations">
+      <property name="enabled">
+       <bool>true</bool>
+      </property>
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <layout class="QVBoxLayout" name="verticalLayout">
+       <item>
+        <widget class="QLabel" name="label">
+         <property name="text">
+          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p align=&quot;center&quot;&gt;&lt;span style=&quot; font-size:12pt; font-weight:600;&quot;&gt;xxcc&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QListWidget" name="conversations_list">
+         <property name="verticalScrollMode">
+          <enum>QAbstractItemView::ScrollPerPixel</enum>
+         </property>
+         <property name="horizontalScrollMode">
+          <enum>QAbstractItemView::ScrollPerPixel</enum>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout">
+         <item>
+          <widget class="QPushButton" name="accounts">
+           <property name="text">
+            <string>Accounts</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="contacts">
+           <property name="text">
+            <string>Contacts</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="rooms">
+           <property name="text">
+            <string>Rooms</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="chat_tab">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <layout class="QVBoxLayout" name="verticalLayout_3">
+       <item>
+        <widget class="QPushButton" name="back">
+         <property name="maximumSize">
+          <size>
+           <width>32</width>
+           <height>16777215</height>
+          </size>
+         </property>
+         <property name="text">
+          <string>&lt;</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout_2">
+         <item>
+          <widget class="QLabel" name="picture">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="text">
+            <string>Picture</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QLabel" name="jid">
+           <property name="text">
+            <string notr="true">Contact name</string>
+           </property>
+           <property name="textFormat">
+            <enum>Qt::PlainText</enum>
+           </property>
+           <property name="alignment">
+            <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item>
+        <widget class="QListWidget" name="messages">
+         <property name="verticalScrollMode">
+          <enum>QAbstractItemView::ScrollPerPixel</enum>
+         </property>
+         <property name="horizontalScrollMode">
+          <enum>QAbstractItemView::ScrollPerPixel</enum>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="chatinput_hbox">
+         <property name="spacing">
+          <number>8</number>
+         </property>
+         <property name="sizeConstraint">
+          <enum>QLayout::SetMinimumSize</enum>
+         </property>
+         <item>
+          <widget class="QPlainTextEdit" name="chatinput">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+             <horstretch>0</horstretch>
+             <verstretch>1</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="minimumSize">
+            <size>
+             <width>0</width>
+             <height>0</height>
+            </size>
+           </property>
+           <property name="maximumSize">
+            <size>
+             <width>16777215</width>
+             <height>16777215</height>
+            </size>
+           </property>
+           <property name="midLineWidth">
+            <number>0</number>
+           </property>
+           <property name="horizontalScrollBarPolicy">
+            <enum>Qt::ScrollBarAsNeeded</enum>
+           </property>
+           <property name="sizeAdjustPolicy">
+            <enum>QAbstractScrollArea::AdjustToContents</enum>
+           </property>
+           <property name="tabChangesFocus">
+            <bool>true</bool>
+           </property>
+           <property name="backgroundVisible">
+            <bool>false</bool>
+           </property>
+           <property name="placeholderText">
+            <string>Write a message...</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <layout class="QVBoxLayout" name="verticalLayout_4">
+           <item>
+            <widget class="QPushButton" name="send">
+             <property name="sizePolicy">
+              <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+               <horstretch>0</horstretch>
+               <verstretch>0</verstretch>
+              </sizepolicy>
+             </property>
+             <property name="text">
+              <string>Send</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QCheckBox" name="checkBox">
+             <property name="enabled">
+              <bool>false</bool>
+             </property>
+             <property name="sizePolicy">
+              <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+               <horstretch>0</horstretch>
+               <verstretch>0</verstretch>
+              </sizepolicy>
+             </property>
+             <property name="text">
+              <string>OMEMO</string>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+        </layout>
+       </item>
+      </layout>
+     </widget>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>