477 lines
16 KiB
C++
477 lines
16 KiB
C++
/**
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* SPDX-FileCopyrightText: 2019 Simon Redman <simon@ergotech.com>
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*
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* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
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*/
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#include "smshelper.h"
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#include <QClipboard>
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#include <QFileInfo>
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#include <QGuiApplication>
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#include <QHash>
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#include <QIcon>
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#include <QMimeDatabase>
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#include <QMimeType>
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#include <QPainter>
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#include <QRegularExpression>
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#include <QStandardPaths>
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#include <QString>
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#include <QtDebug>
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#include <KPeople/PersonData>
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#include <KPeople/PersonsModel>
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#include "interfaces/conversationmessage.h"
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#include "smsapp/gsmasciimap.h"
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#include "smshelper_debug.h"
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QObject *SmsHelper::singletonProvider(QQmlEngine *engine, QJSEngine *scriptEngine)
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{
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Q_UNUSED(engine);
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Q_UNUSED(scriptEngine);
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return new SmsHelper();
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}
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bool SmsHelper::isPhoneNumberMatchCanonicalized(const QString &canonicalPhone1, const QString &canonicalPhone2)
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{
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if (canonicalPhone1.isEmpty() || canonicalPhone2.isEmpty()) {
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// The empty string is not a valid phone number so does not match anything
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return false;
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}
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// To decide if a phone number matches:
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// 1. Are they similar lengths? If two numbers are very different, probably one is junk data and should be ignored
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// 2. Is one a superset of the other? Phone number digits get more specific the further towards the end of the string,
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// so if one phone number ends with the other, it is probably just a more-complete version of the same thing
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const QString &longerNumber = canonicalPhone1.length() >= canonicalPhone2.length() ? canonicalPhone1 : canonicalPhone2;
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const QString &shorterNumber = canonicalPhone1.length() < canonicalPhone2.length() ? canonicalPhone1 : canonicalPhone2;
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const CountryCode &country = determineCountryCode(longerNumber);
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const bool shorterNumberIsShortCode = isShortCode(shorterNumber, country);
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const bool longerNumberIsShortCode = isShortCode(longerNumber, country);
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if ((shorterNumberIsShortCode && !longerNumberIsShortCode) || (!shorterNumberIsShortCode && longerNumberIsShortCode)) {
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// If only one of the numbers is a short code, they clearly do not match
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return false;
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}
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bool matchingPhoneNumber = longerNumber.endsWith(shorterNumber);
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return matchingPhoneNumber;
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}
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bool SmsHelper::isPhoneNumberMatch(const QString &phone1, const QString &phone2)
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{
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const QString &canonicalPhone1 = canonicalizePhoneNumber(phone1);
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const QString &canonicalPhone2 = canonicalizePhoneNumber(phone2);
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return isPhoneNumberMatchCanonicalized(canonicalPhone1, canonicalPhone2);
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}
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bool SmsHelper::isShortCode(const QString &phoneNumber, const SmsHelper::CountryCode &country)
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{
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// Regardless of which country this number belongs to, a number of length less than 6 is a "short code"
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if (phoneNumber.length() <= 6) {
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return true;
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}
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if (country == CountryCode::Australia && phoneNumber.length() == 8 && phoneNumber.startsWith(QStringLiteral("19"))) {
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return true;
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}
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if (country == CountryCode::CzechRepublic && phoneNumber.length() <= 9) {
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// This entry of the Wikipedia article is fairly poorly written, so it is not clear whether a
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// short code with length 7 should start with a 9. Leave it like this for now, upgrade as
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// we get more information
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return true;
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}
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return false;
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}
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SmsHelper::CountryCode SmsHelper::determineCountryCode(const QString &canonicalNumber)
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{
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// This is going to fall apart if someone has not entered a country code into their contact book
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// or if Android decides it can't be bothered to report the country code, but probably we will
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// be fine anyway
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if (canonicalNumber.startsWith(QStringLiteral("41"))) {
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return CountryCode::Australia;
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}
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if (canonicalNumber.startsWith(QStringLiteral("420"))) {
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return CountryCode::CzechRepublic;
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}
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// The only countries I care about for the current implementation are Australia and CzechRepublic
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// If we need to deal with further countries, we should probably find a library
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return CountryCode::Other;
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}
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QString SmsHelper::canonicalizePhoneNumber(const QString &phoneNumber)
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{
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static const QRegularExpression leadingZeroes(QStringLiteral("^0*"));
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QString toReturn(phoneNumber);
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toReturn = toReturn.remove(QStringLiteral(" "));
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toReturn = toReturn.remove(QStringLiteral("-"));
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toReturn = toReturn.remove(QStringLiteral("("));
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toReturn = toReturn.remove(QStringLiteral(")"));
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toReturn = toReturn.remove(QStringLiteral("+"));
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toReturn = toReturn.remove(leadingZeroes);
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if (toReturn.isEmpty()) {
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// If we have stripped away everything, assume this is a special number (and already canonicalized)
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return phoneNumber;
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}
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return toReturn;
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}
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bool SmsHelper::isAddressValid(const QString &address)
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{
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QString canonicalizedNumber = canonicalizePhoneNumber(address);
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// This regular expression matches a wide range of international Phone numbers, minimum of 3 digits and maximum upto 15 digits
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static const QRegularExpression validNumberPattern(QStringLiteral("^(\\d{3,15})$"));
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if (validNumberPattern.match(canonicalizedNumber).hasMatch()) {
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return true;
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} else {
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static const QRegularExpression emailPattern(QStringLiteral("^[\\w\\.]*@[\\w\\.]*$"));
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if (emailPattern.match(address).hasMatch()) {
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return true;
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}
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}
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return false;
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}
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class PersonsCache : public QObject
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{
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public:
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PersonsCache()
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{
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connect(&m_people, &QAbstractItemModel::rowsRemoved, this, [this](const QModelIndex &parent, int first, int last) {
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if (parent.isValid())
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return;
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for (int i = first; i <= last; ++i) {
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const QString &uri = m_people.get(i, KPeople::PersonsModel::PersonUriRole).toString();
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m_personDataCache.remove(uri);
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}
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});
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}
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QSharedPointer<KPeople::PersonData> personAt(int rowIndex)
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{
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const QString &uri = m_people.get(rowIndex, KPeople::PersonsModel::PersonUriRole).toString();
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auto &person = m_personDataCache[uri];
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if (!person)
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person.reset(new KPeople::PersonData(uri));
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return person;
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}
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int count() const
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{
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return m_people.rowCount();
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}
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private:
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KPeople::PersonsModel m_people;
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QHash<QString, QSharedPointer<KPeople::PersonData>> m_personDataCache;
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};
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QList<QSharedPointer<KPeople::PersonData>> SmsHelper::getAllPersons()
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{
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static PersonsCache s_cache;
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QList<QSharedPointer<KPeople::PersonData>> personDataList;
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for (int rowIndex = 0; rowIndex < s_cache.count(); rowIndex++) {
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const auto person = s_cache.personAt(rowIndex);
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personDataList.append(person);
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}
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return personDataList;
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}
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QSharedPointer<KPeople::PersonData> SmsHelper::lookupPersonByAddress(const QString &address)
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{
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const QString &canonicalAddress = SmsHelper::canonicalizePhoneNumber(address);
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QList<QSharedPointer<KPeople::PersonData>> personDataList = getAllPersons();
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for (const auto &person : personDataList) {
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const QStringList &allEmails = person->allEmails();
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for (const QString &email : allEmails) {
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// Although we are nominally an SMS messaging app, it is possible to send messages to phone numbers using email -> sms bridges
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if (address == email) {
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return person;
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}
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}
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// TODO: Either upgrade KPeople with an allPhoneNumbers method
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const QVariantList allPhoneNumbers = person->contactCustomProperty(QStringLiteral("all-phoneNumber")).toList();
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for (const QVariant &rawPhoneNumber : allPhoneNumbers) {
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const QString &phoneNumber = SmsHelper::canonicalizePhoneNumber(rawPhoneNumber.toString());
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bool matchingPhoneNumber = SmsHelper::isPhoneNumberMatchCanonicalized(canonicalAddress, phoneNumber);
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if (matchingPhoneNumber) {
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// qCDebug(KDECONNECT_SMS_CONVERSATIONS_LIST_MODEL) << "Matched" << address << "to" << person->name();
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return person;
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}
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}
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}
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return nullptr;
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}
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QIcon SmsHelper::combineIcons(const QList<QPixmap> &icons)
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{
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QIcon icon;
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if (icons.size() == 0) {
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// We have no icon :(
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// Once we are using the generic icon from KPeople for unknown contacts, this should never happen
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} else if (icons.size() == 1) {
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icon = icons.first();
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} else {
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// Cook an icon by combining the available icons
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// Barring better information, use the size of the first icon as the size for the final icon
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QSize size = icons.first().size();
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QPixmap canvas(size);
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canvas.fill(Qt::transparent);
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QPainter painter(&canvas);
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QSize halfSize = size / 2;
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QRect topLeftQuadrant(QPoint(0, 0), halfSize);
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QRect topRightQuadrant(topLeftQuadrant.topRight(), halfSize);
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QRect bottomLeftQuadrant(topLeftQuadrant.bottomLeft(), halfSize);
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QRect bottomRightQuadrant(topLeftQuadrant.bottomRight(), halfSize);
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if (icons.size() == 2) {
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painter.drawPixmap(topLeftQuadrant, icons[0]);
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painter.drawPixmap(bottomRightQuadrant, icons[1]);
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} else if (icons.size() == 3) {
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QRect topMiddle(QPoint(halfSize.width() / 2, 0), halfSize);
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painter.drawPixmap(topMiddle, icons[0]);
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painter.drawPixmap(bottomLeftQuadrant, icons[1]);
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painter.drawPixmap(bottomRightQuadrant, icons[2]);
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} else {
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// Four or more
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painter.drawPixmap(topLeftQuadrant, icons[0]);
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painter.drawPixmap(topRightQuadrant, icons[1]);
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painter.drawPixmap(bottomLeftQuadrant, icons[2]);
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painter.drawPixmap(bottomRightQuadrant, icons[3]);
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}
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icon = canvas;
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}
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return icon;
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}
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QString SmsHelper::getTitleForAddresses(const QList<ConversationAddress> &addresses)
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{
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QStringList titleParts;
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for (const ConversationAddress &address : addresses) {
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const auto personData = SmsHelper::lookupPersonByAddress(address.address());
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if (personData) {
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titleParts.append(personData->name());
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} else {
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titleParts.append(address.address());
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}
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}
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// It might be nice to alphabetize before combining so that the names don't move around randomly
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// (based on how the data came to us from Android)
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return titleParts.join(QLatin1String(", "));
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}
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QIcon SmsHelper::getIconForAddresses(const QList<ConversationAddress> &addresses)
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{
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QList<QPixmap> icons;
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for (const ConversationAddress &address : addresses) {
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const auto personData = SmsHelper::lookupPersonByAddress(address.address());
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static const QIcon defaultIcon = QIcon::fromTheme(QStringLiteral("im-user"));
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static const QPixmap defaultAvatar = defaultIcon.pixmap(defaultIcon.actualSize(QSize(32, 32)));
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QPixmap avatar;
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if (personData) {
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const QVariant pic = personData->contactCustomProperty(QStringLiteral("picture"));
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if (pic.canConvert<QImage>()) {
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avatar = QPixmap::fromImage(pic.value<QImage>());
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}
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if (avatar.isNull()) {
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icons.append(defaultAvatar);
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} else {
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icons.append(avatar);
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}
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} else {
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icons.append(defaultAvatar);
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}
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}
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// It might be nice to alphabetize by contact before combining so that the pictures don't move
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// around randomly (based on how the data came to us from Android)
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return combineIcons(icons);
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}
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void SmsHelper::copyToClipboard(const QString &text)
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{
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QGuiApplication::clipboard()->setText(text);
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}
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SmsCharCount SmsHelper::getCharCount(const QString &message)
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{
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const int remainingWhenEmpty = 160;
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const int septetsInSingleSms = 160;
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const int septetsInSingleConcatSms = 153;
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const int charsInSingleUcs2Sms = 70;
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const int charsInSingleConcatUcs2Sms = 67;
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SmsCharCount count;
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bool enc7bit = true; // 7-bit is used when true, UCS-2 if false
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quint32 septets = 0; // GSM encoding character count (characters in extension are counted as 2 chars)
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int length = message.length();
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// Count characters and detect encoding
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for (int i = 0; i < length; i++) {
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QChar ch = message[i];
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if (isInGsmAlphabet(ch)) {
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septets++;
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} else if (isInGsmAlphabetExtension(ch)) {
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septets += 2;
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} else {
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enc7bit = false;
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break;
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}
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}
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if (length == 0) {
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count.bitsPerChar = 7;
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count.octets = 0;
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count.remaining = remainingWhenEmpty;
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count.messages = 1;
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} else if (enc7bit) {
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count.bitsPerChar = 7;
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count.octets = (septets * 7 + 6) / 8;
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if (septets > septetsInSingleSms) {
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count.messages = (septetsInSingleConcatSms - 1 + septets) / septetsInSingleConcatSms;
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count.remaining = (septetsInSingleConcatSms * count.messages - septets) % septetsInSingleConcatSms;
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} else {
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count.messages = 1;
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count.remaining = (septetsInSingleSms - septets) % septetsInSingleSms;
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}
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} else {
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count.bitsPerChar = 16;
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count.octets = length * 2; // QString should be in UTF-16
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if (length > charsInSingleUcs2Sms) {
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count.messages = (charsInSingleConcatUcs2Sms - 1 + length) / charsInSingleConcatUcs2Sms;
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count.remaining = (charsInSingleConcatUcs2Sms * count.messages - length) % charsInSingleConcatUcs2Sms;
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} else {
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count.messages = 1;
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count.remaining = (charsInSingleUcs2Sms - length) % charsInSingleUcs2Sms;
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}
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}
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return count;
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}
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bool SmsHelper::isInGsmAlphabet(const QChar &ch)
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{
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wchar_t unicode = ch.unicode();
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if ((unicode & ~0x7f) == 0) { // If the character is ASCII
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// use map
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return gsm_ascii_map[unicode];
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} else {
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switch (unicode) {
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case 0xa1: // “¡”
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case 0xa7: // “§”
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case 0xbf: // “¿”
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case 0xa4: // “¤”
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case 0xa3: // “£”
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case 0xa5: // “¥”
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case 0xe0: // “à”
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case 0xe5: // “å”
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case 0xc5: // “Å”
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case 0xe4: // “ä”
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case 0xc4: // “Ä”
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case 0xe6: // “æ”
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case 0xc6: // “Æ”
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case 0xc7: // “Ç”
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case 0xe9: // “é”
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case 0xc9: // “É”
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case 0xe8: // “è”
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case 0xec: // “ì”
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case 0xf1: // “ñ”
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case 0xd1: // “Ñ”
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case 0xf2: // “ò”
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case 0xf6: // “ö”
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case 0xd6: // “Ö”
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case 0xf8: // “ø”
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case 0xd8: // “Ø”
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case 0xdf: // “ß”
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case 0xf9: // “ù”
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case 0xfc: // “ü”
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case 0xdc: // “Ü”
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case 0x393: // “Γ”
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case 0x394: // “Δ”
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case 0x398: // “Θ”
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case 0x39b: // “Λ”
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case 0x39e: // “Ξ”
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case 0x3a0: // “Π”
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case 0x3a3: // “Σ”
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case 0x3a6: // “Φ”
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case 0x3a8: // “Ψ”
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case 0x3a9: // “Ω”
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return true;
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}
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}
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return false;
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}
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bool SmsHelper::isInGsmAlphabetExtension(const QChar &ch)
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{
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wchar_t unicode = ch.unicode();
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switch (unicode) {
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case '{':
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case '}':
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case '|':
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case '\\':
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case '^':
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case '[':
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case ']':
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case '~':
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case 0x20ac: // Euro sign
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return true;
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}
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return false;
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}
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quint64 SmsHelper::totalMessageSize(const QList<QUrl> &urls, const QString &text)
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{
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quint64 totalSize = text.size();
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for (QUrl url : urls) {
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QFileInfo fileInfo(url.toLocalFile());
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totalSize += fileInfo.size();
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}
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return totalSize;
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}
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QIcon SmsHelper::getThumbnailForAttachment(const Attachment &attachment)
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{
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static const QMimeDatabase mimeDatabase;
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const QByteArray rawData = QByteArray::fromBase64(attachment.base64EncodedFile().toUtf8());
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if (attachment.mimeType().startsWith(QStringLiteral("image")) || attachment.mimeType().startsWith(QStringLiteral("video"))) {
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QPixmap preview;
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preview.loadFromData(rawData);
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return QIcon(preview);
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} else {
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const QMimeType mimeType = mimeDatabase.mimeTypeForData(rawData);
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const QIcon mimeIcon = QIcon::fromTheme(mimeType.iconName());
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if (mimeIcon.isNull()) {
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// I am not sure if QIcon::isNull will actually tell us what we care about but I don't
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// know how to trigger the case where we need to use genericIconName instead of iconName
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return QIcon::fromTheme(mimeType.genericIconName());
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} else {
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return mimeIcon;
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}
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}
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}
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