Initial commit

9 files changed, 919 insertions, 0 deletions

diff --git a/buteo-plugins/buteo-sync-plugin-mastodon-posts/buteo-sync-plugin-mastodon-posts.pro b/buteo-plugins/buteo-sync-plugin-mastodon-posts/buteo-sync-plugin-mastodon-posts.pro
new file mode 100644
index 0000000..86387b2
--- /dev/null
+++ b/buteo-plugins/buteo-sync-plugin-mastodon-posts/buteo-sync-plugin-mastodon-posts.pro
@@ -0,0 +1,37 @@
+TARGET = mastodon-posts-client
+
+QT -= gui
+
+include($$PWD/../buteo-common/buteo-common.pri)
+include($$PWD/../../common/common.pri)
+
+CONFIG += link_pkgconfig
+PKGCONFIG += mlite5 nemonotifications-qt5
+
+INCLUDEPATH += $$PWD
+
+SOURCES += \
+    $$PWD/mastodondatatypesyncadaptor.cpp \
+    $$PWD/mastodonpostsplugin.cpp \
+    $$PWD/mastodonpostssyncadaptor.cpp
+
+HEADERS += \
+    $$PWD/mastodondatatypesyncadaptor.h \
+    $$PWD/mastodonpostsplugin.h \
+    $$PWD/mastodonpostssyncadaptor.h
+
+OTHER_FILES += \
+    $$PWD/mastodon-posts.xml \
+    $$PWD/mastodon.Posts.xml
+
+TEMPLATE = lib
+CONFIG += plugin
+target.path = $$[QT_INSTALL_LIBS]/buteo-plugins-qt5/oopp
+
+sync.path = /etc/buteo/profiles/sync
+sync.files = mastodon.Posts.xml
+
+client.path = /etc/buteo/profiles/client
+client.files = mastodon-posts.xml
+
+INSTALLS += target sync client
diff --git a/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodon-posts.xml b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodon-posts.xml
new file mode 100644
index 0000000..7f1fec2
--- /dev/null
+++ b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodon-posts.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<profile name="mastodon-posts" type="client" >
+    <field name="Sync Direction" />
+</profile>
diff --git a/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodon.Posts.xml b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodon.Posts.xml
new file mode 100644
index 0000000..44183a6
--- /dev/null
+++ b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodon.Posts.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<profile name="mastodon.Posts" type="sync" >
+    <key name="category" value="eventfeed" />
+    <key name="enabled" value="false" />
+    <key name="use_accounts" value="false" />
+    <key name="destinationtype" value="online" />
+    <key name="hidden" value="true" />
+    <key name="displayname" value="Mastodon Posts"/>
+
+    <schedule enabled="false" interval="30" days="1,2,3,4,5,6,7" syncconfiguredtime="" time="" />
+
+    <profile name="mastodon-posts" type="client" >
+        <key name="Sync Direction" value="from-remote" />
+    </profile>
+</profile>
diff --git a/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodondatatypesyncadaptor.cpp b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodondatatypesyncadaptor.cpp
new file mode 100644
index 0000000..977b33b
--- /dev/null
+++ b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodondatatypesyncadaptor.cpp
@@ -0,0 +1,313 @@
+/****************************************************************************
+ **
+ ** Copyright (C) 2026 Open Mobile Platform LLC.
+ **
+ ** This program/library is free software; you can redistribute it and/or
+ ** modify it under the terms of the GNU Lesser General Public License
+ ** version 2.1 as published by the Free Software Foundation.
+ **
+ ** This program/library is distributed in the hope that it will be useful,
+ ** but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ ** Lesser General Public License for more details.
+ **
+ ** You should have received a copy of the GNU Lesser General Public
+ ** License along with this program/library; if not, write to the Free
+ ** Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ ** 02110-1301 USA
+ **
+ ****************************************************************************/
+
+#include "mastodondatatypesyncadaptor.h"
+#include "trace.h"
+
+#include <QtCore/QVariantMap>
+#include <QtCore/QUrl>
+#include <QtNetwork/QNetworkRequest>
+
+// libaccounts-qt5
+#include <Accounts/Manager>
+#include <Accounts/Account>
+#include <Accounts/Service>
+#include <Accounts/AccountService>
+
+// libsignon-qt5
+#include <SignOn/Identity>
+#include <SignOn/AuthSession>
+#include <SignOn/SessionData>
+
+MastodonDataTypeSyncAdaptor::MastodonDataTypeSyncAdaptor(
+        SocialNetworkSyncAdaptor::DataType dataType,
+        QObject *parent)
+    : SocialNetworkSyncAdaptor(QStringLiteral("mastodon"), dataType, 0, parent)
+{
+}
+
+MastodonDataTypeSyncAdaptor::~MastodonDataTypeSyncAdaptor()
+{
+}
+
+void MastodonDataTypeSyncAdaptor::sync(const QString &dataTypeString, int accountId)
+{
+    if (dataTypeString != SocialNetworkSyncAdaptor::dataTypeName(m_dataType)) {
+        qCWarning(lcSocialPlugin) << "Mastodon" << SocialNetworkSyncAdaptor::dataTypeName(m_dataType)
+                                  << "sync adaptor was asked to sync" << dataTypeString;
+        setStatus(SocialNetworkSyncAdaptor::Error);
+        return;
+    }
+
+    setStatus(SocialNetworkSyncAdaptor::Busy);
+    updateDataForAccount(accountId);
+    qCDebug(lcSocialPlugin) << "successfully triggered sync with profile:" << m_accountSyncProfile->name();
+}
+
+void MastodonDataTypeSyncAdaptor::updateDataForAccount(int accountId)
+{
+    Accounts::Account *account = Accounts::Account::fromId(m_accountManager, accountId, this);
+    if (!account) {
+        qCWarning(lcSocialPlugin) << "existing account with id" << accountId << "couldn't be retrieved";
+        setStatus(SocialNetworkSyncAdaptor::Error);
+        return;
+    }
+
+    incrementSemaphore(accountId);
+    signIn(account);
+}
+
+QString MastodonDataTypeSyncAdaptor::apiHost(int accountId) const
+{
+    return m_apiHosts.value(accountId, QStringLiteral("https://mastodon.social"));
+}
+
+void MastodonDataTypeSyncAdaptor::errorHandler(QNetworkReply::NetworkError err)
+{
+    QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
+    if (!reply) {
+        return;
+    }
+
+    const int accountId = reply->property("accountId").toInt();
+    const int httpStatus = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
+
+    qCWarning(lcSocialPlugin) << SocialNetworkSyncAdaptor::dataTypeName(m_dataType)
+                              << "request with account" << accountId
+                              << "experienced error:" << err
+                              << "HTTP:" << httpStatus;
+
+    reply->setProperty("isError", QVariant::fromValue<bool>(true));
+
+    if (httpStatus == 401 || err == QNetworkReply::AuthenticationRequiredError) {
+        Accounts::Account *account = Accounts::Account::fromId(m_accountManager, accountId, this);
+        if (account) {
+            setCredentialsNeedUpdate(account);
+        }
+    }
+}
+
+void MastodonDataTypeSyncAdaptor::sslErrorsHandler(const QList<QSslError> &errs)
+{
+    QString sslerrs;
+    foreach (const QSslError &e, errs) {
+        sslerrs += e.errorString() + QLatin1String("; ");
+    }
+    if (!sslerrs.isEmpty()) {
+        sslerrs.chop(2);
+    }
+
+    qCWarning(lcSocialPlugin) << SocialNetworkSyncAdaptor::dataTypeName(m_dataType)
+                              << "request with account" << sender()->property("accountId").toInt()
+                              << "experienced ssl errors:" << sslerrs;
+    sender()->setProperty("isError", QVariant::fromValue<bool>(true));
+}
+
+void MastodonDataTypeSyncAdaptor::setCredentialsNeedUpdate(Accounts::Account *account)
+{
+    qCInfo(lcSocialPlugin) << "sociald:Mastodon: setting CredentialsNeedUpdate to true for account:" << account->id();
+    Accounts::Service srv(m_accountManager->service(syncServiceName()));
+    account->selectService(srv);
+    account->setValue(QStringLiteral("CredentialsNeedUpdate"), QVariant::fromValue<bool>(true));
+    account->setValue(QStringLiteral("CredentialsNeedUpdateFrom"), QVariant::fromValue<QString>(QString::fromLatin1("sociald-mastodon")));
+    account->selectService(Accounts::Service());
+    account->syncAndBlock();
+}
+
+QString MastodonDataTypeSyncAdaptor::normalizeApiHost(const QString &rawHost)
+{
+    QString host = rawHost.trimmed();
+    if (host.isEmpty()) {
+        host = QStringLiteral("https://mastodon.social");
+    }
+    if (!host.startsWith(QLatin1String("https://"))
+            && !host.startsWith(QLatin1String("http://"))) {
+        host.prepend(QStringLiteral("https://"));
+    }
+
+    QUrl url(host);
+    if (!url.isValid() || url.host().isEmpty()) {
+        return QStringLiteral("https://mastodon.social");
+    }
+
+    QString normalized = QString::fromLatin1(url.toEncoded(QUrl::RemovePath | QUrl::RemoveQuery | QUrl::RemoveFragment));
+    if (normalized.endsWith(QLatin1Char('/'))) {
+        normalized.chop(1);
+    }
+    return normalized;
+}
+
+void MastodonDataTypeSyncAdaptor::signIn(Accounts::Account *account)
+{
+    const int accountId = account->id();
+    if (!checkAccount(account)) {
+        decrementSemaphore(accountId);
+        return;
+    }
+
+    Accounts::Service srv(m_accountManager->service(syncServiceName()));
+    account->selectService(srv);
+    SignOn::Identity *identity = account->credentialsId() > 0
+            ? SignOn::Identity::existingIdentity(account->credentialsId())
+            : 0;
+    if (!identity) {
+        qCWarning(lcSocialPlugin) << "account" << accountId << "has no valid credentials, cannot sign in";
+        decrementSemaphore(accountId);
+        return;
+    }
+
+    Accounts::AccountService accSrv(account, srv);
+    const QString method = accSrv.authData().method();
+    const QString mechanism = accSrv.authData().mechanism();
+    SignOn::AuthSession *session = identity->createSession(method);
+    if (!session) {
+        qCWarning(lcSocialPlugin) << "could not create signon session for account" << accountId;
+        identity->deleteLater();
+        decrementSemaphore(accountId);
+        return;
+    }
+
+    QVariantMap signonSessionData = accSrv.authData().parameters();
+    QString configuredHost = account->value(QStringLiteral("auth/oauth2/web_server/Host")).toString().trimmed();
+    if (configuredHost.isEmpty()) {
+        configuredHost = normalizeApiHost(account->value(QStringLiteral("api/Host")).toString());
+    }
+    if (configuredHost.startsWith(QLatin1String("https://"))) {
+        configuredHost.remove(0, 8);
+    } else if (configuredHost.startsWith(QLatin1String("http://"))) {
+        configuredHost.remove(0, 7);
+    }
+    while (configuredHost.endsWith(QLatin1Char('/'))) {
+        configuredHost.chop(1);
+    }
+    if (configuredHost.isEmpty()) {
+        configuredHost = QStringLiteral("mastodon.social");
+    }
+    signonSessionData.insert(QStringLiteral("Host"), configuredHost);
+
+    const QString authPath = account->value(QStringLiteral("auth/oauth2/web_server/AuthPath")).toString().trimmed();
+    if (!authPath.isEmpty()) {
+        signonSessionData.insert(QStringLiteral("AuthPath"), authPath);
+    }
+
+    const QString tokenPath = account->value(QStringLiteral("auth/oauth2/web_server/TokenPath")).toString().trimmed();
+    if (!tokenPath.isEmpty()) {
+        signonSessionData.insert(QStringLiteral("TokenPath"), tokenPath);
+    }
+
+    const QString responseType = account->value(QStringLiteral("auth/oauth2/web_server/ResponseType")).toString().trimmed();
+    if (!responseType.isEmpty()) {
+        signonSessionData.insert(QStringLiteral("ResponseType"), responseType);
+    }
+
+    const QString redirectUri = account->value(QStringLiteral("auth/oauth2/web_server/RedirectUri")).toString().trimmed();
+    if (!redirectUri.isEmpty()) {
+        signonSessionData.insert(QStringLiteral("RedirectUri"), redirectUri);
+    }
+
+    const QVariant scopeValue = account->value(QStringLiteral("auth/oauth2/web_server/Scope"));
+    if (scopeValue.isValid()) {
+        signonSessionData.insert(QStringLiteral("Scope"), scopeValue);
+    }
+
+    const QString clientId = account->value(QStringLiteral("auth/oauth2/web_server/ClientId")).toString().trimmed();
+    if (!clientId.isEmpty()) {
+        signonSessionData.insert(QStringLiteral("ClientId"), clientId);
+    }
+
+    const QString clientSecret = account->value(QStringLiteral("auth/oauth2/web_server/ClientSecret")).toString().trimmed();
+    if (!clientSecret.isEmpty()) {
+        signonSessionData.insert(QStringLiteral("ClientSecret"), clientSecret);
+    }
+
+    signonSessionData.insert(QStringLiteral("UiPolicy"), SignOn::NoUserInteractionPolicy);
+
+    connect(session, SIGNAL(response(SignOn::SessionData)),
+            this, SLOT(signOnResponse(SignOn::SessionData)),
+            Qt::UniqueConnection);
+    connect(session, SIGNAL(error(SignOn::Error)),
+            this, SLOT(signOnError(SignOn::Error)),
+            Qt::UniqueConnection);
+
+    session->setProperty("account", QVariant::fromValue<Accounts::Account*>(account));
+    session->setProperty("identity", QVariant::fromValue<SignOn::Identity*>(identity));
+    session->process(SignOn::SessionData(signonSessionData), mechanism);
+}
+
+void MastodonDataTypeSyncAdaptor::signOnError(const SignOn::Error &error)
+{
+    SignOn::AuthSession *session = qobject_cast<SignOn::AuthSession*>(sender());
+    Accounts::Account *account = session->property("account").value<Accounts::Account*>();
+    SignOn::Identity *identity = session->property("identity").value<SignOn::Identity*>();
+    const int accountId = account->id();
+
+    qCWarning(lcSocialPlugin) << "credentials for account with id" << accountId
+                              << "couldn't be retrieved:" << error.type() << error.message();
+
+    if (error.type() == SignOn::Error::UserInteraction) {
+        setCredentialsNeedUpdate(account);
+    }
+
+    session->disconnect(this);
+    identity->destroySession(session);
+    identity->deleteLater();
+    account->deleteLater();
+
+    setStatus(SocialNetworkSyncAdaptor::Error);
+    decrementSemaphore(accountId);
+}
+
+void MastodonDataTypeSyncAdaptor::signOnResponse(const SignOn::SessionData &responseData)
+{
+    QVariantMap data;
+    foreach (const QString &key, responseData.propertyNames()) {
+        data.insert(key, responseData.getProperty(key));
+    }
+
+    QString accessToken;
+    SignOn::AuthSession *session = qobject_cast<SignOn::AuthSession*>(sender());
+    Accounts::Account *account = session->property("account").value<Accounts::Account*>();
+    SignOn::Identity *identity = session->property("identity").value<SignOn::Identity*>();
+    const int accountId = account->id();
+
+    accessToken = data.value(QLatin1String("AccessToken")).toString().trimmed();
+    if (accessToken.isEmpty()) {
+        accessToken = data.value(QLatin1String("access_token")).toString().trimmed();
+    }
+    if (accessToken.isEmpty()) {
+        qCWarning(lcSocialPlugin) << "signon response for account with id" << accountId
+                                  << "contained no access token; keys:" << data.keys();
+    }
+
+    m_apiHosts.insert(accountId, normalizeApiHost(account->value(QStringLiteral("api/Host")).toString()));
+
+    session->disconnect(this);
+    identity->destroySession(session);
+    identity->deleteLater();
+    account->deleteLater();
+
+    if (!accessToken.isEmpty()) {
+        beginSync(accountId, accessToken);
+    } else {
+        setStatus(SocialNetworkSyncAdaptor::Error);
+    }
+
+    decrementSemaphore(accountId);
+}
diff --git a/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodondatatypesyncadaptor.h b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodondatatypesyncadaptor.h
new file mode 100644
index 0000000..f295cd8
--- /dev/null
+++ b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodondatatypesyncadaptor.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+ **
+ ** Copyright (C) 2026 Open Mobile Platform LLC.
+ **
+ ** This program/library is free software; you can redistribute it and/or
+ ** modify it under the terms of the GNU Lesser General Public License
+ ** version 2.1 as published by the Free Software Foundation.
+ **
+ ** This program/library is distributed in the hope that it will be useful,
+ ** but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ ** Lesser General Public License for more details.
+ **
+ ** You should have received a copy of the GNU Lesser General Public
+ ** License along with this program/library; if not, write to the Free
+ ** Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ ** 02110-1301 USA
+ **
+ ****************************************************************************/
+
+#ifndef MASTODONDATATYPESYNCADAPTOR_H
+#define MASTODONDATATYPESYNCADAPTOR_H
+
+#include "socialnetworksyncadaptor.h"
+
+#include <QtCore/QMap>
+#include <QtNetwork/QNetworkReply>
+#include <QtNetwork/QSslError>
+
+namespace Accounts {
+    class Account;
+}
+namespace SignOn {
+    class Error;
+    class SessionData;
+}
+
+class MastodonDataTypeSyncAdaptor : public SocialNetworkSyncAdaptor
+{
+    Q_OBJECT
+
+public:
+    MastodonDataTypeSyncAdaptor(SocialNetworkSyncAdaptor::DataType dataType, QObject *parent);
+    virtual ~MastodonDataTypeSyncAdaptor();
+
+    void sync(const QString &dataTypeString, int accountId) override;
+
+protected:
+    QString apiHost(int accountId) const;
+    virtual void updateDataForAccount(int accountId);
+    virtual void beginSync(int accountId, const QString &accessToken) = 0;
+
+protected Q_SLOTS:
+    virtual void errorHandler(QNetworkReply::NetworkError err);
+    virtual void sslErrorsHandler(const QList<QSslError> &errs);
+
+private Q_SLOTS:
+    void signOnError(const SignOn::Error &error);
+    void signOnResponse(const SignOn::SessionData &responseData);
+
+private:
+    static QString normalizeApiHost(const QString &rawHost);
+    void setCredentialsNeedUpdate(Accounts::Account *account);
+    void signIn(Accounts::Account *account);
+
+private:
+    QMap<int, QString> m_apiHosts;
+};
+
+#endif // MASTODONDATATYPESYNCADAPTOR_H
diff --git a/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostsplugin.cpp b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostsplugin.cpp
new file mode 100644
index 0000000..d3c8d50
--- /dev/null
+++ b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostsplugin.cpp
@@ -0,0 +1,49 @@
+/****************************************************************************
+ **
+ ** Copyright (C) 2026 Open Mobile Platform LLC.
+ **
+ ** This program/library is free software; you can redistribute it and/or
+ ** modify it under the terms of the GNU Lesser General Public License
+ ** version 2.1 as published by the Free Software Foundation.
+ **
+ ** This program/library is distributed in the hope that it will be useful,
+ ** but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ ** Lesser General Public License for more details.
+ **
+ ** You should have received a copy of the GNU Lesser General Public
+ ** License along with this program/library; if not, write to the Free
+ ** Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ ** 02110-1301 USA
+ **
+ ****************************************************************************/
+
+#include "mastodonpostsplugin.h"
+#include "mastodonpostssyncadaptor.h"
+#include "socialnetworksyncadaptor.h"
+
+MastodonPostsPlugin::MastodonPostsPlugin(const QString& pluginName,
+                                         const Buteo::SyncProfile& profile,
+                                         Buteo::PluginCbInterface *callbackInterface)
+    : SocialdButeoPlugin(pluginName, profile, callbackInterface,
+                         QStringLiteral("mastodon"),
+                         SocialNetworkSyncAdaptor::dataTypeName(SocialNetworkSyncAdaptor::Posts))
+{
+}
+
+MastodonPostsPlugin::~MastodonPostsPlugin()
+{
+}
+
+SocialNetworkSyncAdaptor *MastodonPostsPlugin::createSocialNetworkSyncAdaptor()
+{
+    return new MastodonPostsSyncAdaptor(this);
+}
+
+Buteo::ClientPlugin* MastodonPostsPluginLoader::createClientPlugin(
+        const QString& pluginName,
+        const Buteo::SyncProfile& profile,
+        Buteo::PluginCbInterface* cbInterface)
+{
+    return new MastodonPostsPlugin(pluginName, profile, cbInterface);
+}
diff --git a/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostsplugin.h b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostsplugin.h
new file mode 100644
index 0000000..35dbb56
--- /dev/null
+++ b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostsplugin.h
@@ -0,0 +1,54 @@
+/****************************************************************************
+ **
+ ** Copyright (C) 2026 Open Mobile Platform LLC.
+ **
+ ** This program/library is free software; you can redistribute it and/or
+ ** modify it under the terms of the GNU Lesser General Public License
+ ** version 2.1 as published by the Free Software Foundation.
+ **
+ ** This program/library is distributed in the hope that it will be useful,
+ ** but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ ** Lesser General Public License for more details.
+ **
+ ** You should have received a copy of the GNU Lesser General Public
+ ** License along with this program/library; if not, write to the Free
+ ** Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ ** 02110-1301 USA
+ **
+ ****************************************************************************/
+
+#ifndef MASTODONPOSTSPLUGIN_H
+#define MASTODONPOSTSPLUGIN_H
+
+#include "socialdbuteoplugin.h"
+
+#include <buteosyncfw5/SyncPluginLoader.h>
+
+class Q_DECL_EXPORT MastodonPostsPlugin : public SocialdButeoPlugin
+{
+    Q_OBJECT
+
+public:
+    MastodonPostsPlugin(const QString& pluginName,
+                        const Buteo::SyncProfile& profile,
+                        Buteo::PluginCbInterface *cbInterface);
+    ~MastodonPostsPlugin();
+
+protected:
+    SocialNetworkSyncAdaptor *createSocialNetworkSyncAdaptor() override;
+};
+
+class MastodonPostsPluginLoader : public Buteo::SyncPluginLoader
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.sailfishos.plugins.sync.MastodonPostsPluginLoader")
+    Q_INTERFACES(Buteo::SyncPluginLoader)
+
+public:
+    Buteo::ClientPlugin* createClientPlugin(const QString& pluginName,
+                                            const Buteo::SyncProfile& profile,
+                                            Buteo::PluginCbInterface* cbInterface) override;
+};
+
+#endif // MASTODONPOSTSPLUGIN_H
diff --git a/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostssyncadaptor.cpp b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostssyncadaptor.cpp
new file mode 100644
index 0000000..7ccf0a2
--- /dev/null
+++ b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostssyncadaptor.cpp
@@ -0,0 +1,316 @@
+/****************************************************************************
+ **
+ ** Copyright (C) 2026 Open Mobile Platform LLC.
+ **
+ ** This program/library is free software; you can redistribute it and/or
+ ** modify it under the terms of the GNU Lesser General Public License
+ ** version 2.1 as published by the Free Software Foundation.
+ **
+ ** This program/library is distributed in the hope that it will be useful,
+ ** but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ ** Lesser General Public License for more details.
+ **
+ ** You should have received a copy of the GNU Lesser General Public
+ ** License along with this program/library; if not, write to the Free
+ ** Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ ** 02110-1301 USA
+ **
+ ****************************************************************************/
+
+#include "mastodonpostssyncadaptor.h"
+#include "trace.h"
+
+#include <QtCore/QJsonArray>
+#include <QtCore/QJsonObject>
+#include <QtCore/QJsonValue>
+#include <QtCore/QRegularExpression>
+#include <QtCore/QUrl>
+#include <QtCore/QUrlQuery>
+#include <QtNetwork/QNetworkRequest>
+
+namespace {
+    QString decodeHtmlEntities(QString text)
+    {
+        text.replace(QStringLiteral("&quot;"), QStringLiteral("\""));
+        text.replace(QStringLiteral("&apos;"), QStringLiteral("'"));
+        text.replace(QStringLiteral("&lt;"), QStringLiteral("<"));
+        text.replace(QStringLiteral("&gt;"), QStringLiteral(">"));
+        text.replace(QStringLiteral("&amp;"), QStringLiteral("&"));
+        text.replace(QStringLiteral("&nbsp;"), QStringLiteral(" "));
+
+        static const QRegularExpression decimalEntity(QStringLiteral("&#(\\d+);"));
+        QRegularExpressionMatch match;
+        int index = 0;
+        while ((index = text.indexOf(decimalEntity, index, &match)) != -1) {
+            const uint value = match.captured(1).toUInt();
+            const QString replacement = value > 0 ? QString(QChar(value)) : QString();
+            text.replace(index, match.capturedLength(0), replacement);
+            index += replacement.size();
+        }
+
+        static const QRegularExpression hexEntity(QStringLiteral("&#x([0-9a-fA-F]+);"));
+        index = 0;
+        while ((index = text.indexOf(hexEntity, index, &match)) != -1) {
+            bool ok = false;
+            const uint value = match.captured(1).toUInt(&ok, 16);
+            const QString replacement = ok && value > 0 ? QString(QChar(value)) : QString();
+            text.replace(index, match.capturedLength(0), replacement);
+            index += replacement.size();
+        }
+
+        return text;
+    }
+
+    QString displayNameForAccount(const QJsonObject &account)
+    {
+        const QString displayName = account.value(QStringLiteral("display_name")).toString().trimmed();
+        if (!displayName.isEmpty()) {
+            return displayName;
+        }
+
+        const QString username = account.value(QStringLiteral("username")).toString().trimmed();
+        if (!username.isEmpty()) {
+            return username;
+        }
+
+        return account.value(QStringLiteral("acct")).toString().trimmed();
+    }
+}
+
+MastodonPostsSyncAdaptor::MastodonPostsSyncAdaptor(QObject *parent)
+    : MastodonDataTypeSyncAdaptor(SocialNetworkSyncAdaptor::Posts, parent)
+{
+    setInitialActive(m_db.isValid());
+}
+
+MastodonPostsSyncAdaptor::~MastodonPostsSyncAdaptor()
+{
+}
+
+QString MastodonPostsSyncAdaptor::syncServiceName() const
+{
+    return QStringLiteral("mastodon-microblog");
+}
+
+void MastodonPostsSyncAdaptor::purgeDataForOldAccount(int oldId, SocialNetworkSyncAdaptor::PurgeMode)
+{
+    m_db.removePosts(oldId);
+    m_db.commit();
+    m_db.wait();
+
+    purgeCachedImages(&m_imageCacheDb, oldId);
+}
+
+void MastodonPostsSyncAdaptor::beginSync(int accountId, const QString &accessToken)
+{
+    requestPosts(accountId, accessToken);
+}
+
+void MastodonPostsSyncAdaptor::finalize(int accountId)
+{
+    if (syncAborted()) {
+        qCInfo(lcSocialPlugin) << "sync aborted, won't commit database changes";
+    } else {
+        m_db.commit();
+        m_db.wait();
+        purgeExpiredImages(&m_imageCacheDb, accountId);
+    }
+}
+
+QString MastodonPostsSyncAdaptor::sanitizeContent(const QString &content)
+{
+    QString plain = content;
+    plain.replace(QRegularExpression(QStringLiteral("<\\s*br\\s*/?\\s*>"), QRegularExpression::CaseInsensitiveOption), QStringLiteral("\n"));
+    plain.replace(QRegularExpression(QStringLiteral("<\\s*/\\s*p\\s*>"), QRegularExpression::CaseInsensitiveOption), QStringLiteral("\n"));
+    plain.remove(QRegularExpression(QStringLiteral("<[^>]+>"), QRegularExpression::CaseInsensitiveOption));
+
+    return decodeHtmlEntities(plain).trimmed();
+}
+
+QDateTime MastodonPostsSyncAdaptor::parseTimestamp(const QString &timestampString)
+{
+    QDateTime timestamp;
+
+#if QT_VERSION >= QT_VERSION_CHECK(5, 8, 0)
+    timestamp = QDateTime::fromString(timestampString, Qt::ISODateWithMs);
+    if (timestamp.isValid()) {
+        return timestamp;
+    }
+#endif
+
+    timestamp = QDateTime::fromString(timestampString, Qt::ISODate);
+    if (timestamp.isValid()) {
+        return timestamp;
+    }
+
+    // Qt 5.6 cannot parse ISO-8601 timestamps with fractional seconds.
+    const int timeSeparator = timestampString.indexOf(QLatin1Char('T'));
+    const int fractionSeparator = timestampString.indexOf(QLatin1Char('.'), timeSeparator + 1);
+    if (timeSeparator > -1 && fractionSeparator > -1) {
+        int timezoneSeparator = timestampString.indexOf(QLatin1Char('Z'), fractionSeparator + 1);
+        if (timezoneSeparator == -1) {
+            timezoneSeparator = timestampString.indexOf(QLatin1Char('+'), fractionSeparator + 1);
+        }
+        if (timezoneSeparator == -1) {
+            timezoneSeparator = timestampString.indexOf(QLatin1Char('-'), fractionSeparator + 1);
+        }
+
+        QString stripped = timestampString;
+        if (timezoneSeparator > -1) {
+            stripped.remove(fractionSeparator, timezoneSeparator - fractionSeparator);
+        } else {
+            stripped.truncate(fractionSeparator);
+        }
+
+        timestamp = QDateTime::fromString(stripped, Qt::ISODate);
+    }
+
+    return timestamp;
+}
+
+void MastodonPostsSyncAdaptor::requestPosts(int accountId, const QString &accessToken)
+{
+    QUrl url(apiHost(accountId) + QStringLiteral("/api/v1/timelines/home"));
+
+    QUrlQuery query(url);
+    query.addQueryItem(QStringLiteral("limit"), QStringLiteral("20"));
+    url.setQuery(query);
+
+    QNetworkRequest request(url);
+    request.setRawHeader("Authorization", QStringLiteral("Bearer %1").arg(accessToken).toUtf8());
+
+    QNetworkReply *reply = m_networkAccessManager->get(request);
+    if (reply) {
+        reply->setProperty("accountId", accountId);
+        connect(reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(errorHandler(QNetworkReply::NetworkError)));
+        connect(reply, SIGNAL(sslErrors(QList<QSslError>)), this, SLOT(sslErrorsHandler(QList<QSslError>)));
+        connect(reply, SIGNAL(finished()), this, SLOT(finishedPostsHandler()));
+
+        incrementSemaphore(accountId);
+        setupReplyTimeout(accountId, reply);
+    } else {
+        qCWarning(lcSocialPlugin) << "unable to request home timeline posts from Mastodon account with id" << accountId;
+    }
+}
+
+void MastodonPostsSyncAdaptor::finishedPostsHandler()
+{
+    QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
+    if (!reply) {
+        return;
+    }
+
+    const bool isError = reply->property("isError").toBool();
+    const int accountId = reply->property("accountId").toInt();
+    QByteArray replyData = reply->readAll();
+
+    disconnect(reply);
+    reply->deleteLater();
+    removeReplyTimeout(accountId, reply);
+
+    bool ok = false;
+    QJsonArray statuses = parseJsonArrayReplyData(replyData, &ok);
+    if (!isError && ok) {
+        if (!statuses.size()) {
+            qCDebug(lcSocialPlugin) << "no feed posts received for account" << accountId;
+            decrementSemaphore(accountId);
+            return;
+        }
+
+        m_db.removePosts(accountId);
+
+        const int sinceSpan = m_accountSyncProfile
+                ? m_accountSyncProfile->key(Buteo::KEY_SYNC_SINCE_DAYS_PAST, QStringLiteral("7")).toInt()
+                : 7;
+
+        foreach (const QJsonValue &statusValue, statuses) {
+            const QJsonObject statusObject = statusValue.toObject();
+            if (statusObject.isEmpty()) {
+                continue;
+            }
+
+            QJsonObject postObject = statusObject;
+            QString boostedBy;
+            if (statusObject.contains(QStringLiteral("reblog"))
+                    && statusObject.value(QStringLiteral("reblog")).isObject()
+                    && !statusObject.value(QStringLiteral("reblog")).isNull()) {
+                boostedBy = displayNameForAccount(statusObject.value(QStringLiteral("account")).toObject());
+                postObject = statusObject.value(QStringLiteral("reblog")).toObject();
+            }
+
+            QDateTime eventTimestamp = parseTimestamp(statusObject.value(QStringLiteral("created_at")).toString());
+            if (!eventTimestamp.isValid()) {
+                eventTimestamp = parseTimestamp(postObject.value(QStringLiteral("created_at")).toString());
+            }
+            if (!eventTimestamp.isValid()) {
+                continue;
+            }
+
+            if (eventTimestamp.daysTo(QDateTime::currentDateTime()) > sinceSpan) {
+                continue;
+            }
+
+            const QJsonObject account = postObject.value(QStringLiteral("account")).toObject();
+            const QString displayName = displayNameForAccount(account);
+            const QString accountName = account.value(QStringLiteral("acct")).toString();
+            QString icon = account.value(QStringLiteral("avatar_static")).toString();
+            if (icon.isEmpty()) {
+                icon = account.value(QStringLiteral("avatar")).toString();
+            }
+
+            QString identifier = postObject.value(QStringLiteral("id")).toVariant().toString();
+            if (identifier.isEmpty()) {
+                continue;
+            }
+
+            QString url = postObject.value(QStringLiteral("url")).toString();
+            if (url.isEmpty() && !accountName.isEmpty()) {
+                url = QStringLiteral("%1/@%2/%3").arg(apiHost(accountId), accountName, identifier);
+            }
+
+            const QString body = sanitizeContent(postObject.value(QStringLiteral("content")).toString());
+
+            QList<QPair<QString, SocialPostImage::ImageType> > imageList;
+            const QJsonArray mediaAttachments = postObject.value(QStringLiteral("media_attachments")).toArray();
+            foreach (const QJsonValue &attachmentValue, mediaAttachments) {
+                const QJsonObject attachment = attachmentValue.toObject();
+                const QString mediaType = attachment.value(QStringLiteral("type")).toString();
+
+                QString mediaUrl;
+                SocialPostImage::ImageType imageType = SocialPostImage::Invalid;
+                if (mediaType == QLatin1String("image")) {
+                    mediaUrl = attachment.value(QStringLiteral("url")).toString();
+                    imageType = SocialPostImage::Photo;
+                } else if (mediaType == QLatin1String("video") || mediaType == QLatin1String("gifv")) {
+                    mediaUrl = attachment.value(QStringLiteral("preview_url")).toString();
+                    if (mediaUrl.isEmpty()) {
+                        mediaUrl = attachment.value(QStringLiteral("url")).toString();
+                    }
+                    imageType = SocialPostImage::Video;
+                }
+
+                if (!mediaUrl.isEmpty() && imageType != SocialPostImage::Invalid) {
+                    imageList.append(qMakePair(mediaUrl, imageType));
+                }
+            }
+
+            m_db.addMastodonPost(identifier,
+                                displayName,
+                                accountName,
+                                body,
+                                eventTimestamp,
+                                icon,
+                                imageList,
+                                url,
+                                boostedBy,
+                                apiHost(accountId),
+                                accountId);
+        }
+    } else {
+        qCWarning(lcSocialPlugin) << "unable to parse event feed data from request with account" << accountId
+                                  << ", got:" << QString::fromUtf8(replyData);
+    }
+
+    decrementSemaphore(accountId);
+}
diff --git a/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostssyncadaptor.h b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostssyncadaptor.h
new file mode 100644
index 0000000..10f8b1c
--- /dev/null
+++ b/buteo-plugins/buteo-sync-plugin-mastodon-posts/mastodonpostssyncadaptor.h
@@ -0,0 +1,61 @@
+/****************************************************************************
+ **
+ ** Copyright (C) 2026 Open Mobile Platform LLC.
+ **
+ ** This program/library is free software; you can redistribute it and/or
+ ** modify it under the terms of the GNU Lesser General Public License
+ ** version 2.1 as published by the Free Software Foundation.
+ **
+ ** This program/library is distributed in the hope that it will be useful,
+ ** but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ ** Lesser General Public License for more details.
+ **
+ ** You should have received a copy of the GNU Lesser General Public
+ ** License along with this program/library; if not, write to the Free
+ ** Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ ** 02110-1301 USA
+ **
+ ****************************************************************************/
+
+#ifndef MASTODONPOSTSSYNCADAPTOR_H
+#define MASTODONPOSTSSYNCADAPTOR_H
+
+#include "mastodondatatypesyncadaptor.h"
+
+#include <QtCore/QDateTime>
+#include <QtNetwork/QNetworkReply>
+
+#include "mastodonpostsdatabase.h"
+#include <socialcache/socialimagesdatabase.h>
+
+class MastodonPostsSyncAdaptor : public MastodonDataTypeSyncAdaptor
+{
+    Q_OBJECT
+
+public:
+    MastodonPostsSyncAdaptor(QObject *parent);
+    ~MastodonPostsSyncAdaptor();
+
+    QString syncServiceName() const override;
+
+protected:
+    void purgeDataForOldAccount(int oldId, SocialNetworkSyncAdaptor::PurgeMode mode) override;
+    void beginSync(int accountId, const QString &accessToken) override;
+    void finalize(int accountId) override;
+
+private:
+    static QString sanitizeContent(const QString &content);
+    static QDateTime parseTimestamp(const QString &timestampString);
+
+    void requestPosts(int accountId, const QString &accessToken);
+
+private Q_SLOTS:
+    void finishedPostsHandler();
+
+private:
+    MastodonPostsDatabase m_db;
+    SocialImagesDatabase m_imageCacheDb;
+};
+
+#endif // MASTODONPOSTSSYNCADAPTOR_H