1
0
forked from blue/squawk
squawk/core/archive.cpp
shunf4 7db269acb5 Fixes for Windows
1. On Windows, the lmdb file is immediately allocated at full size. So we have to limit the size.

2. Windows need an organization name for QSettings to work. So an organization name is added for Windows target.
2021-10-06 19:15:45 +08:00

1007 lines
30 KiB
C++

/*
* Squawk messenger.
* Copyright (C) 2019 Yury Gubich <blue@macaw.me>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "archive.h"
#include <sys/stat.h>
#include <sys/types.h>
#include <QStandardPaths>
#include <QDebug>
#include <QDataStream>
#include <QDir>
Core::Archive::Archive(const QString& p_jid, QObject* parent):
QObject(parent),
jid(p_jid),
opened(false),
fromTheBeginning(false),
environment(),
main(),
order(),
stats(),
avatars()
{
}
Core::Archive::~Archive()
{
close();
}
void Core::Archive::open(const QString& account)
{
if (!opened) {
mdb_env_create(&environment);
QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
path += "/" + account + "/" + jid;
QDir cache(path);
if (!cache.exists()) {
bool res = cache.mkpath(path);
if (!res) {
throw Directory(path.toStdString());
}
}
mdb_env_set_maxdbs(environment, 5);
mdb_env_set_mapsize(environment,
#ifdef Q_OS_WIN
// On Windows, the file is immediately allocated.
// So we have to limit the size.
80UL * 1024UL * 1024UL
#else
512UL * 1024UL * 1024UL
#endif
);
mdb_env_open(environment, path.toStdString().c_str(), 0, 0664);
MDB_txn *txn;
mdb_txn_begin(environment, NULL, 0, &txn);
mdb_dbi_open(txn, "main", MDB_CREATE, &main);
mdb_dbi_open(txn, "order", MDB_CREATE | MDB_INTEGERKEY, &order);
mdb_dbi_open(txn, "stats", MDB_CREATE, &stats);
mdb_dbi_open(txn, "avatars", MDB_CREATE, &avatars);
mdb_dbi_open(txn, "sid", MDB_CREATE, &sid);
mdb_txn_commit(txn);
mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
try {
fromTheBeginning = getStatBoolValue("beginning", txn);
} catch (const NotFound& e) {
fromTheBeginning = false;
}
std::string sJid = jid.toStdString();
AvatarInfo info;
bool hasAvatar = readAvatarInfo(info, sJid, txn);
mdb_txn_abort(txn);
if (hasAvatar) {
QFile ava(path + "/" + sJid.c_str() + "." + info.type);
if (!ava.exists()) {
bool success = dropAvatar(sJid);
if (!success) {
qDebug() << "error opening archive" << jid << "for account" << account
<< ". There is supposed to be avatar but the file doesn't exist, couldn't even drop it, it surely will lead to an error";
}
}
}
opened = true;
}
}
void Core::Archive::close()
{
if (opened) {
mdb_dbi_close(environment, sid);
mdb_dbi_close(environment, avatars);
mdb_dbi_close(environment, stats);
mdb_dbi_close(environment, order);
mdb_dbi_close(environment, main);
mdb_env_close(environment);
opened = false;
}
}
bool Core::Archive::addElement(const Shared::Message& message)
{
if (!opened) {
throw Closed("addElement", jid.toStdString());
}
QByteArray ba;
QDataStream ds(&ba, QIODevice::WriteOnly);
message.serialize(ds);
quint64 stamp = message.getTime().toMSecsSinceEpoch();
const std::string& id = message.getId().toStdString();
MDB_val lmdbKey, lmdbData;
lmdbKey.mv_size = id.size();
lmdbKey.mv_data = (char*)id.c_str();
lmdbData.mv_size = ba.size();
lmdbData.mv_data = (uint8_t*)ba.data();
MDB_txn *txn;
mdb_txn_begin(environment, NULL, 0, &txn);
int rc;
rc = mdb_put(txn, main, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
if (rc == 0) {
MDB_val orderKey;
orderKey.mv_size = 8;
orderKey.mv_data = (uint8_t*) &stamp;
rc = mdb_put(txn, order, &orderKey, &lmdbKey, 0);
if (rc) {
qDebug() << "An element couldn't be inserted into the index" << mdb_strerror(rc);
mdb_txn_abort(txn);
return false;
} else {
if (message.getStanzaId().size() > 0) {
const std::string& szid = message.getStanzaId().toStdString();
lmdbKey.mv_size = szid.size();
lmdbKey.mv_data = (char*)szid.c_str();
lmdbData.mv_size = id.size();
lmdbData.mv_data = (uint8_t*)id.data();
rc = mdb_put(txn, sid, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
if (rc) {
qDebug() << "An element stanzaId to id pair couldn't be inserted into the archive" << mdb_strerror(rc);
mdb_txn_abort(txn);
return false;
} else {
rc = mdb_txn_commit(txn);
if (rc) {
qDebug() << "A transaction error: " << mdb_strerror(rc);
return false;
}
return true;
}
} else {
rc = mdb_txn_commit(txn);
if (rc) {
qDebug() << "A transaction error: " << mdb_strerror(rc);
return false;
}
return true;
}
}
} else {
qDebug() << "An element couldn't been added to the archive, skipping" << mdb_strerror(rc);
mdb_txn_abort(txn);
return false;
}
}
void Core::Archive::clear()
{
if (!opened) {
throw Closed("clear", jid.toStdString());
}
MDB_txn *txn;
mdb_txn_begin(environment, NULL, 0, &txn);
mdb_drop(txn, main, 0);
mdb_drop(txn, order, 0);
mdb_drop(txn, stats, 0);
mdb_drop(txn, avatars, 0);
mdb_drop(txn, sid, 0);
mdb_txn_commit(txn);
}
Shared::Message Core::Archive::getElement(const QString& id) const
{
if (!opened) {
throw Closed("getElement", jid.toStdString());
}
MDB_txn *txn;
mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
try {
Shared::Message msg = getMessage(id.toStdString(), txn);
mdb_txn_abort(txn);
return msg;
} catch (...) {
mdb_txn_abort(txn);
throw;
}
}
bool Core::Archive::hasElement(const QString& id) const
{
if (!opened) {
throw Closed("hasElement", jid.toStdString());
}
MDB_txn *txn;
mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
bool has;
MDB_val lmdbKey, lmdbData;
lmdbKey.mv_size = id.size();
lmdbKey.mv_data = (char*)id.toStdString().c_str();
int rc = mdb_get(txn, main, &lmdbKey, &lmdbData);
has = rc == 0;
mdb_txn_abort(txn);
return has;
}
Shared::Message Core::Archive::getMessage(const std::string& id, MDB_txn* txn) const
{
MDB_val lmdbKey, lmdbData;
lmdbKey.mv_size = id.size();
lmdbKey.mv_data = (char*)id.c_str();
int rc = mdb_get(txn, main, &lmdbKey, &lmdbData);
if (rc == 0) {
QByteArray ba((char*)lmdbData.mv_data, lmdbData.mv_size);
QDataStream ds(&ba, QIODevice::ReadOnly);
Shared::Message msg;
msg.deserialize(ds);
return msg;
} else if (rc == MDB_NOTFOUND) {
throw NotFound(id, jid.toStdString());
} else {
throw Unknown(jid.toStdString(), mdb_strerror(rc));
}
}
void Core::Archive::changeMessage(const QString& id, const QMap<QString, QVariant>& data)
{
if (!opened) {
throw Closed("setMessageState", jid.toStdString());
}
MDB_txn *txn;
mdb_txn_begin(environment, NULL, 0, &txn);
std::string strId(id.toStdString());
try {
Shared::Message msg = getMessage(strId, txn);
bool hadStanzaId = msg.getStanzaId().size() > 0;
QDateTime oTime = msg.getTime();
bool idChange = msg.change(data);
QDateTime nTime = msg.getTime();
bool orderChange = oTime != nTime;
MDB_val lmdbKey, lmdbData;
QByteArray ba;
QDataStream ds(&ba, QIODevice::WriteOnly);
msg.serialize(ds);
lmdbKey.mv_size = strId.size();
lmdbKey.mv_data = (char*)strId.c_str();
int rc;
if (idChange || orderChange) {
if (idChange) {
rc = mdb_del(txn, main, &lmdbKey, &lmdbData);
} else {
quint64 ostamp = oTime.toMSecsSinceEpoch();
lmdbData.mv_data = (quint8*)&ostamp;
lmdbData.mv_size = 8;
rc = mdb_del(txn, order, &lmdbData, &lmdbKey);
}
if (rc == 0) {
strId = msg.getId().toStdString();
lmdbKey.mv_size = strId.size();
lmdbKey.mv_data = (char*)strId.c_str();
quint64 stamp = nTime.toMSecsSinceEpoch();
lmdbData.mv_data = (quint8*)&stamp;
lmdbData.mv_size = 8;
rc = mdb_put(txn, order, &lmdbData, &lmdbKey, 0);
if (rc != 0) {
throw Unknown(jid.toStdString(), mdb_strerror(rc));
}
} else {
throw Unknown(jid.toStdString(), mdb_strerror(rc));
}
}
QString qsid = msg.getStanzaId();
if (qsid.size() > 0 && (idChange || !hadStanzaId)) {
std::string szid = qsid.toStdString();
lmdbData.mv_size = szid.size();
lmdbData.mv_data = (char*)szid.c_str();
rc = mdb_put(txn, sid, &lmdbData, &lmdbKey, 0);
if (rc != 0) {
throw Unknown(jid.toStdString(), mdb_strerror(rc));
}
};
lmdbData.mv_size = ba.size();
lmdbData.mv_data = (uint8_t*)ba.data();
rc = mdb_put(txn, main, &lmdbKey, &lmdbData, 0);
if (rc == 0) {
rc = mdb_txn_commit(txn);
} else {
throw Unknown(jid.toStdString(), mdb_strerror(rc));
}
} catch (...) {
mdb_txn_abort(txn);
throw;
}
}
Shared::Message Core::Archive::newest()
{
return edge(true);
}
QString Core::Archive::newestId()
{
if (!opened) {
throw Closed("newestId", jid.toStdString());
}
Shared::Message msg = newest();
return msg.getId();
}
QString Core::Archive::oldestId()
{
if (!opened) {
throw Closed("oldestId", jid.toStdString());
}
Shared::Message msg = oldest();
return msg.getId();
}
Shared::Message Core::Archive::oldest()
{
return edge(false);
}
Shared::Message Core::Archive::edge(bool end)
{
QString name;
MDB_cursor_op begin;
MDB_cursor_op iteration;
if (end) {
name = "newest";
begin = MDB_LAST;
iteration = MDB_PREV;
} else {
name = "oldest";
begin = MDB_FIRST;
iteration = MDB_NEXT;
}
if (!opened) {
throw Closed(name.toStdString(), jid.toStdString());
}
MDB_txn *txn;
MDB_cursor* cursor;
MDB_val lmdbKey, lmdbData;
int rc;
rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
rc = mdb_cursor_open(txn, order, &cursor);
rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, begin);
Shared::Message msg = getStoredMessage(txn, cursor, iteration, &lmdbKey, &lmdbData, rc);
mdb_cursor_close(cursor);
mdb_txn_abort(txn);
if (rc) {
qDebug() << "Error geting" << name << "message" << mdb_strerror(rc);
throw Empty(jid.toStdString());
} else {
return msg;
}
}
Shared::Message Core::Archive::getStoredMessage(MDB_txn *txn, MDB_cursor* cursor, MDB_cursor_op op, MDB_val* key, MDB_val* value, int& rc)
{
Shared::Message msg;
std::string sId;
while (true) {
if (rc) {
break;
}
sId = std::string((char*)value->mv_data, value->mv_size);
try {
msg = getMessage(sId, txn);
if (msg.serverStored()) {
break;
} else {
rc = mdb_cursor_get(cursor, key, value, op);
}
} catch (...) {
break;
}
}
return msg;
}
unsigned int Core::Archive::addElements(const std::list<Shared::Message>& messages)
{
if (!opened) {
throw Closed("addElements", jid.toStdString());
}
int success = 0;
int rc = 0;
MDB_val lmdbKey, lmdbData;
MDB_txn *txn;
mdb_txn_begin(environment, NULL, 0, &txn);
std::list<Shared::Message>::const_iterator itr = messages.begin();
while (rc == 0 && itr != messages.end()) {
const Shared::Message& message = *itr;
QByteArray ba;
QDataStream ds(&ba, QIODevice::WriteOnly);
message.serialize(ds);
quint64 stamp = message.getTime().toMSecsSinceEpoch();
const std::string& id = message.getId().toStdString();
lmdbKey.mv_size = id.size();
lmdbKey.mv_data = (char*)id.c_str();
lmdbData.mv_size = ba.size();
lmdbData.mv_data = (uint8_t*)ba.data();
rc = mdb_put(txn, main, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
if (rc == 0) {
MDB_val orderKey;
orderKey.mv_size = 8;
orderKey.mv_data = (uint8_t*) &stamp;
rc = mdb_put(txn, order, &orderKey, &lmdbKey, 0);
if (rc) {
qDebug() << "An element couldn't be inserted into the index, aborting the transaction" << mdb_strerror(rc);
} else {
if (message.getStanzaId().size() > 0) {
const std::string& szid = message.getStanzaId().toStdString();
lmdbKey.mv_size = szid.size();
lmdbKey.mv_data = (char*)szid.c_str();
lmdbData.mv_size = id.size();
lmdbData.mv_data = (uint8_t*)id.data();
rc = mdb_put(txn, sid, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
if (rc) {
qDebug() << "During bulk add an element stanzaId to id pair couldn't be inserted into the archive, continuing without stanzaId" << mdb_strerror(rc);
}
}
success++;
}
} else {
if (rc == MDB_KEYEXIST) {
rc = 0;
} else {
qDebug() << "An element couldn't been added to the archive, aborting the transaction" << mdb_strerror(rc);
}
}
itr++;
}
if (rc != 0) {
mdb_txn_abort(txn);
success = 0;
} else {
mdb_txn_commit(txn);
}
return success;
}
long unsigned int Core::Archive::size() const
{
if (!opened) {
throw Closed("size", jid.toStdString());
}
MDB_txn *txn;
mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
MDB_stat stat;
mdb_stat(txn, order, &stat);
size_t amount = stat.ms_entries;
mdb_txn_abort(txn);
return amount;
}
std::list<Shared::Message> Core::Archive::getBefore(int count, const QString& id)
{
if (!opened) {
throw Closed("getBefore", jid.toStdString());
}
std::list<Shared::Message> res;
MDB_cursor* cursor;
MDB_txn *txn;
MDB_val lmdbKey, lmdbData;
int rc;
rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
rc = mdb_cursor_open(txn, order, &cursor);
if (id == "") {
rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_LAST);
if (rc) {
qDebug() << "Error getting before" << mdb_strerror(rc) << ", id:" << id;
mdb_cursor_close(cursor);
mdb_txn_abort(txn);
throw Empty(jid.toStdString());
}
} else {
std::string stdId(id.toStdString());
try {
Shared::Message msg = getMessage(stdId, txn);
quint64 stamp = msg.getTime().toMSecsSinceEpoch();
lmdbKey.mv_data = (quint8*)&stamp;
lmdbKey.mv_size = 8;
rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_SET);
if (rc) {
qDebug() << "Error getting before: couldn't set " << mdb_strerror(rc);
throw NotFound(stdId, jid.toStdString());
} else {
rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_PREV);
if (rc) {
qDebug() << "Error getting before, couldn't prev " << mdb_strerror(rc);
throw NotFound(stdId, jid.toStdString());
}
}
} catch (...) {
mdb_cursor_close(cursor);
mdb_txn_abort(txn);
throw;
}
}
do {
MDB_val dKey, dData;
dKey.mv_size = lmdbData.mv_size;
dKey.mv_data = lmdbData.mv_data;
rc = mdb_get(txn, main, &dKey, &dData);
if (rc) {
qDebug() <<"Get error: " << mdb_strerror(rc);
std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
mdb_cursor_close(cursor);
mdb_txn_abort(txn);
throw NotFound(sId, jid.toStdString());
} else {
QByteArray ba((char*)dData.mv_data, dData.mv_size);
QDataStream ds(&ba, QIODevice::ReadOnly);
res.emplace_back();
Shared::Message& msg = res.back();
msg.deserialize(ds);
}
--count;
} while (count > 0 && mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_PREV) == 0);
mdb_cursor_close(cursor);
mdb_txn_abort(txn);
return res;
}
bool Core::Archive::isFromTheBeginning()
{
if (!opened) {
throw Closed("isFromTheBeginning", jid.toStdString());
}
return fromTheBeginning;
}
void Core::Archive::setFromTheBeginning(bool is)
{
if (!opened) {
throw Closed("setFromTheBeginning", jid.toStdString());
}
if (fromTheBeginning != is) {
fromTheBeginning = is;
MDB_txn *txn;
mdb_txn_begin(environment, NULL, 0, &txn);
bool success = setStatValue("beginning", is, txn);
if (success) {
mdb_txn_commit(txn);
} else {
mdb_txn_abort(txn);
}
}
}
QString Core::Archive::idByStanzaId(const QString& stanzaId) const
{
if (!opened) {
throw Closed("idByStanzaId", jid.toStdString());
}
QString id;
std::string ssid = stanzaId.toStdString();
MDB_txn *txn;
MDB_val lmdbKey, lmdbData;
lmdbKey.mv_size = ssid.size();
lmdbKey.mv_data = (char*)ssid.c_str();
mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
int rc = mdb_get(txn, sid, &lmdbKey, &lmdbData);
if (rc == 0) {
id = QString::fromStdString(std::string((char*)lmdbData.mv_data, lmdbData.mv_size));
}
mdb_txn_abort(txn);
return id;
}
QString Core::Archive::stanzaIdById(const QString& id) const
{
if (!opened) {
throw Closed("stanzaIdById", jid.toStdString());
}
try {
Shared::Message msg = getElement(id);
return msg.getStanzaId();
} catch (const NotFound& e) {
return QString();
} catch (const Empty& e) {
return QString();
} catch (...) {
throw;
}
}
void Core::Archive::printOrder()
{
qDebug() << "Printing order";
MDB_txn *txn;
mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
MDB_cursor* cursor;
mdb_cursor_open(txn, order, &cursor);
MDB_val lmdbKey, lmdbData;
mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_FIRST);
do {
std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
qDebug() << QString(sId.c_str());
} while (mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_NEXT) == 0);
mdb_cursor_close(cursor);
mdb_txn_abort(txn);
}
void Core::Archive::printKeys()
{
MDB_txn *txn;
mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
MDB_cursor* cursor;
mdb_cursor_open(txn, main, &cursor);
MDB_val lmdbKey, lmdbData;
mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_FIRST);
do {
std::string sId((char*)lmdbKey.mv_data, lmdbKey.mv_size);
qDebug() << QString(sId.c_str());
} while (mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_NEXT) == 0);
mdb_cursor_close(cursor);
mdb_txn_abort(txn);
}
bool Core::Archive::getStatBoolValue(const std::string& id, MDB_txn* txn)
{
MDB_val lmdbKey, lmdbData;
lmdbKey.mv_size = id.size();
lmdbKey.mv_data = (char*)id.c_str();
int rc;
rc = mdb_get(txn, stats, &lmdbKey, &lmdbData);
if (rc == MDB_NOTFOUND) {
throw NotFound(id, jid.toStdString());
} else if (rc) {
std::string err(mdb_strerror(rc));
qDebug() << "error retrieving" << id.c_str() << "from stats db of" << jid << err.c_str();
throw Unknown(jid.toStdString(), err);
} else {
uint8_t value = *(uint8_t*)(lmdbData.mv_data);
bool is;
if (value == 144) {
is = false;
} else if (value == 72) {
is = true;
} else {
qDebug() << "error retrieving boolean stat" << id.c_str() << ": stored value doesn't match any magic number, the answer is most probably wrong";
throw NotFound(id, jid.toStdString());
}
return is;
}
}
std::string Core::Archive::getStatStringValue(const std::string& id, MDB_txn* txn)
{
MDB_val lmdbKey, lmdbData;
lmdbKey.mv_size = id.size();
lmdbKey.mv_data = (char*)id.c_str();
int rc;
rc = mdb_get(txn, stats, &lmdbKey, &lmdbData);
if (rc == MDB_NOTFOUND) {
throw NotFound(id, jid.toStdString());
} else if (rc) {
std::string err(mdb_strerror(rc));
qDebug() << "error retrieving" << id.c_str() << "from stats db of" << jid << err.c_str();
throw Unknown(jid.toStdString(), err);
} else {
std::string value((char*)lmdbData.mv_data, lmdbData.mv_size);
return value;
}
}
bool Core::Archive::setStatValue(const std::string& id, bool value, MDB_txn* txn)
{
uint8_t binvalue = 144;
if (value) {
binvalue = 72;
}
MDB_val lmdbKey, lmdbData;
lmdbKey.mv_size = id.size();
lmdbKey.mv_data = (char*)id.c_str();
lmdbData.mv_size = sizeof binvalue;
lmdbData.mv_data = &binvalue;
int rc = mdb_put(txn, stats, &lmdbKey, &lmdbData, 0);
if (rc != 0) {
qDebug() << "Couldn't store" << id.c_str() << "key into stat database:" << mdb_strerror(rc);
return false;
}
return true;
}
bool Core::Archive::setStatValue(const std::string& id, const std::string& value, MDB_txn* txn)
{
MDB_val lmdbKey, lmdbData;
lmdbKey.mv_size = id.size();
lmdbKey.mv_data = (char*)id.c_str();
lmdbData.mv_size = value.size();
lmdbData.mv_data = (char*)value.c_str();
int rc = mdb_put(txn, stats, &lmdbKey, &lmdbData, 0);
if (rc != 0) {
qDebug() << "Couldn't store" << id.c_str() << "key into stat database:" << mdb_strerror(rc);
return false;
}
return true;
}
bool Core::Archive::dropAvatar(const std::string& resource)
{
MDB_txn *txn;
MDB_val lmdbKey;
mdb_txn_begin(environment, NULL, 0, &txn);
lmdbKey.mv_size = resource.size();
lmdbKey.mv_data = (char*)resource.c_str();
int rc = mdb_del(txn, avatars, &lmdbKey, NULL);
if (rc != 0) {
mdb_txn_abort(txn);
return false;
} else {
mdb_txn_commit(txn);
return true;
}
}
bool Core::Archive::setAvatar(const QByteArray& data, AvatarInfo& newInfo, bool generated, const QString& resource)
{
if (!opened) {
throw Closed("setAvatar", jid.toStdString());
}
AvatarInfo oldInfo;
bool hasAvatar = readAvatarInfo(oldInfo, resource);
std::string res = resource.size() == 0 ? jid.toStdString() : resource.toStdString();
if (data.size() == 0) {
if (!hasAvatar) {
return false;
} else {
return dropAvatar(res);
}
} else {
const char* cep;
mdb_env_get_path(environment, &cep);
QString currentPath(cep);
bool needToRemoveOld = false;
QCryptographicHash hash(QCryptographicHash::Sha1);
hash.addData(data);
QByteArray newHash(hash.result());
if (hasAvatar) {
if (!generated && !oldInfo.autogenerated && oldInfo.hash == newHash) {
return false;
}
QFile oldAvatar(currentPath + "/" + res.c_str() + "." + oldInfo.type);
if (oldAvatar.exists()) {
if (oldAvatar.rename(currentPath + "/" + res.c_str() + "." + oldInfo.type + ".bak")) {
needToRemoveOld = true;
} else {
qDebug() << "Can't change avatar: couldn't get rid of the old avatar" << oldAvatar.fileName();
return false;
}
}
}
QMimeDatabase db;
QMimeType type = db.mimeTypeForData(data);
QString ext = type.preferredSuffix();
QFile newAvatar(currentPath + "/" + res.c_str() + "." + ext);
if (newAvatar.open(QFile::WriteOnly)) {
newAvatar.write(data);
newAvatar.close();
MDB_txn *txn;
mdb_txn_begin(environment, NULL, 0, &txn);
MDB_val lmdbKey, lmdbData;
QByteArray value;
newInfo.type = ext;
newInfo.hash = newHash;
newInfo.autogenerated = generated;
newInfo.serialize(&value);
lmdbKey.mv_size = res.size();
lmdbKey.mv_data = (char*)res.c_str();
lmdbData.mv_size = value.size();
lmdbData.mv_data = value.data();
int rc = mdb_put(txn, avatars, &lmdbKey, &lmdbData, 0);
if (rc != 0) {
qDebug() << "Can't change avatar: couldn't store changes to database for" << newAvatar.fileName() << "rolling back to the previous state";
if (needToRemoveOld) {
QFile oldAvatar(currentPath + "/" + res.c_str() + "." + oldInfo.type + ".bak");
oldAvatar.rename(currentPath + "/" + res.c_str() + "." + oldInfo.type);
}
mdb_txn_abort(txn);
return false;
} else {
mdb_txn_commit(txn);
if (needToRemoveOld) {
QFile oldAvatar(currentPath + "/" + res.c_str() + "." + oldInfo.type + ".bak");
oldAvatar.remove();
}
return true;
}
} else {
qDebug() << "Can't change avatar: cant open file to write" << newAvatar.fileName() << "rolling back to the previous state";
if (needToRemoveOld) {
QFile oldAvatar(currentPath + "/" + res.c_str() + "." + oldInfo.type + ".bak");
oldAvatar.rename(currentPath + "/" + res.c_str() + "." + oldInfo.type);
}
return false;
}
}
}
bool Core::Archive::readAvatarInfo(Core::Archive::AvatarInfo& target, const QString& resource) const
{
if (!opened) {
throw Closed("readAvatarInfo", jid.toStdString());
}
std::string res = resource.size() == 0 ? jid.toStdString() : resource.toStdString();
MDB_txn *txn;
mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
try {
bool success = readAvatarInfo(target, res, txn);
mdb_txn_abort(txn);
return success;
} catch (...) {
mdb_txn_abort(txn);
throw;
}
}
bool Core::Archive::readAvatarInfo(Core::Archive::AvatarInfo& target, const std::string& res, MDB_txn* txn) const
{
MDB_val lmdbKey, lmdbData;
lmdbKey.mv_size = res.size();
lmdbKey.mv_data = (char*)res.c_str();
int rc;
rc = mdb_get(txn, avatars, &lmdbKey, &lmdbData);
if (rc == MDB_NOTFOUND) {
return false;
} else if (rc) {
std::string err(mdb_strerror(rc));
qDebug() << "error reading avatar info for" << res.c_str() << "resource of" << jid << err.c_str();
throw Unknown(jid.toStdString(), err);
} else {
target.deserialize((char*)lmdbData.mv_data, lmdbData.mv_size);
return true;
}
}
void Core::Archive::readAllResourcesAvatars(std::map<QString, AvatarInfo>& data) const
{
if (!opened) {
throw Closed("readAllResourcesAvatars", jid.toStdString());
}
int rc;
MDB_val lmdbKey, lmdbData;
MDB_txn *txn;
MDB_cursor* cursor;
mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
mdb_cursor_open(txn, avatars, &cursor);
rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_FIRST);
if (rc == 0) { //the db might be empty yet
do {
std::string sId((char*)lmdbKey.mv_data, lmdbKey.mv_size);
QString res(sId.c_str());
if (res != jid) {
data.emplace(res, AvatarInfo());
data[res].deserialize((char*)lmdbData.mv_data, lmdbData.mv_size);
}
} while (mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_NEXT) == 0);
}
mdb_cursor_close(cursor);
mdb_txn_abort(txn);
}
Core::Archive::AvatarInfo Core::Archive::getAvatarInfo(const QString& resource) const
{
if (!opened) {
throw Closed("readAvatarInfo", jid.toStdString());
}
AvatarInfo info;
bool success = readAvatarInfo(info, resource);
if (success) {
return info;
} else {
throw NoAvatar(jid.toStdString(), resource.toStdString());
}
}
Core::Archive::AvatarInfo::AvatarInfo():
type(),
hash(),
autogenerated(false) {}
Core::Archive::AvatarInfo::AvatarInfo(const QString& p_type, const QByteArray& p_hash, bool p_autogenerated):
type(p_type),
hash(p_hash),
autogenerated(p_autogenerated) {}
void Core::Archive::AvatarInfo::deserialize(char* pointer, uint32_t size)
{
QByteArray data = QByteArray::fromRawData(pointer, size);
QDataStream in(&data, QIODevice::ReadOnly);
in >> type >> hash >> autogenerated;
}
void Core::Archive::AvatarInfo::serialize(QByteArray* ba) const
{
QDataStream out(ba, QIODevice::WriteOnly);
out << type << hash << autogenerated;
}