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/*
Copyright (C) 2024-2025 Selwin van Dijk
This file is part of signalbackup-tools.
signalbackup-tools 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.
signalbackup-tools 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 signalbackup-tools. If not, see <https://www.gnu.org/licenses/>.
*/
#include "signalbackup.ih"
bool SignalBackup::tgImportMessages(SqliteDB const &db, std::vector<std::pair<std::vector<std::string>, long long int>> const &contactmap,
std::string const &datapath, std::string const &threadid, long long int chat_idx, bool prependforwarded,
bool markdelivered, bool markread, bool isgroup)
{
// get recipient id for conversation
auto find_in_contactmap = [&contactmap](std::string const &identifier) -> long long int
{
for (unsigned int i = 0; i < contactmap.size(); ++i)
for (unsigned int j = 0; j < contactmap[i].first.size(); ++j)
if (contactmap[i].first[j] == identifier)
return contactmap[i].second;
return -1;
};
long long int thread_recipient_id = -1;
if ((thread_recipient_id = find_in_contactmap(threadid)) == -1)
{
Logger::error("Recipient id not found in contactmap");
return false;
}
// get or create thread_id
long long int thread_id = getThreadIdFromRecipient(thread_recipient_id);
if (thread_id == -1)
{
Logger::warning_start("Failed to find matching thread for conversation, creating. (",
threadid, " (id: ", thread_recipient_id, ")");
std::any new_thread_id;
if (!insertRow("thread",
{{d_thread_recipient_id, thread_recipient_id},
{"active", 1},
{"archived", 0},
//{d_thread_pinned, 0}
},
"_id", &new_thread_id))
{
Logger::message_end();
Logger::error("Failed to create thread for conversation.");
return false;
}
//std::cout << "Raw any_cast 1" << std::endl;
thread_id = std::any_cast<long long int>(new_thread_id);
Logger::message(", thread_id: ", thread_id, ")");
}
// loop over messages from requested chat and insert
SqliteDB::QueryResults message_data;
if (!db.exec("SELECT type, date, from_id, forwarded_from, body, id, reply_to_id, photo, width, height, file, media_type, mime_type, contact_vcard, poll FROM messages "
"WHERE chatidx = ? "
"ORDER BY date ASC",
chat_idx, &message_data))
return false;
// we save the android message id that was created from telegram message id to be able to
// properly handle quotes...
std::map<long long int, long long int> telegram_msg_id_to_adb_msg_id;
// save timestamp of previous message (to merge messages with multiple attachments)
std::pair<long long int, long long int> prevtimestamp_to_id;
for (unsigned int i = 0; i < message_data.rows(); ++i)
{
Logger::message("Dealing with message ", i + 1, "/", message_data.rows());
if (!message_data.isNull(i, "poll"))
{
Logger::warnOnce("Message is 'poll'. This is not supported in Signal. Skipping...");
continue;
}
if (message_data.valueAsString(i, "type") == "message")
{
// prepend notice to forwarded message
std::string bodyjson = message_data.valueAsString(i, "body");
if (prependforwarded && !message_data.isNull(i, "forwarded_from"))
{
//Logger::message("Body json before: ", bodyjson);
long long int n_text_entities = db.getSingleResultAs<long long int>("SELECT json_array_length(?, '$')", bodyjson, -1);
if (n_text_entities == -1)
{
Logger::warning("Failed to get number of text entities in forwarded message");
break;
}
std::string fname = message_data(i, "forwarded_from");
std::string tmp = db.getSingleResultAs<std::string>("SELECT json_array(json_object('type', 'italic', 'text', ?), json_object('type', 'plain', 'text', '\n'))",
"Forwarded from " + fname + ":", std::string());
for (unsigned int nt = 0; nt < n_text_entities; ++nt)
tmp = db.getSingleResultAs<std::string>("SELECT json_insert(?, '$[#]', json_extract(?, '$[" + bepaald::toString(nt) + "]'))", {tmp, bodyjson}, std::string());
if (!tmp.empty())
bodyjson = std::move(tmp);
//Logger::message("Body json after: ", bodyjson);
}
// gather data
std::string body = tgBuildBody(bodyjson);
std::string fromid = message_data.valueAsString(i, "from_id");
long long int from_recid = -1;
if ((from_recid = find_in_contactmap(fromid)) == -1)
{
Logger::error("Recipient id not found in contactmap");
return false;
}
bool incoming = from_recid != d_selfid;
long long int address = !isgroup ? from_recid : (incoming ? from_recid : thread_recipient_id);
// check if we need to merge message
if (message_data.valueAsInt(i, "date") == prevtimestamp_to_id.first &&
body.empty() &&
message_data.isNull(i, "reply_to_id") &&
(!message_data(i, "file").empty() || !message_data(i, "photo").empty()) &&
from_recid == d_database.getSingleResultAs<long long int>("SELECT " + d_mms_recipient_id + " FROM " + d_mms_table + " WHERE _id = ?", prevtimestamp_to_id.second, -1) &&
d_database.getSingleResultAs<long long int>("SELECT _id FROM " + d_part_table + " WHERE " + d_part_mid + " = ? LIMIT 1", prevtimestamp_to_id.second, -1) != -1)
{
Logger::message("Attachment-only message with same timestamp as previous: assuming attachment belongs to previous message");
// add attachments
tgSetAttachment(message_data, datapath, i, prevtimestamp_to_id.second);
continue;
}
// make sure date/from/thread is available
long long int date = message_data.valueAsInt(i, "date") * 1000;
long long int freedate = getFreeDateForMessage(date, thread_id, incoming ? address : d_selfid);
if (freedate == -1)
{
Logger::error("Getting free date for inserting message into mms");
continue;
}
// insert message
std::any retval;
if (!insertRow(d_mms_table, {{"thread_id", thread_id},
{d_mms_date_sent, freedate},
{"date_received", freedate},
{"date_server", freedate},
{d_mms_type, Types::SECURE_MESSAGE_BIT | Types::PUSH_MESSAGE_BIT | (incoming ? Types::BASE_INBOX_TYPE : Types::BASE_SENT_TYPE)},
{"body", body.empty() ? std::any(nullptr) : std::any(body)},
{"read", 1}, // defaults to 0, but causes tons of unread message notifications
{d_mms_delivery_receipts, (incoming ? 0 : (markdelivered ? 1 : 0))},
{d_mms_read_receipts, (incoming ? 0 : (markread ? 1 : 0))},
//{d_mms_viewed_receipts, (incoming ? 0 : 1)},
{d_mms_recipient_id, incoming ? address : d_selfid},
{"to_recipient_id", incoming ? d_selfid : address},
{"m_type", incoming ? 132 : 128}}, // dont know what this is, but these are the values...
//{"quote_id", hasquote ? (bepaald::contains(adjusted_timestamps, mmsquote_id) ? adjusted_timestamps[mmsquote_id] : mmsquote_id) : 0},
//{"quote_author", hasquote ? std::any(mmsquote_author) : std::any(nullptr)},
//{"quote_body", hasquote ? mmsquote_body : nullptr},
//{"quote_missing", hasquote ? mmsquote_missing : 0},
//{"quote_mentions", hasquote ? std::any(mmsquote_mentions) : std::any(nullptr)},
//{"shared_contacts", shared_contacts_json.empty() ? std::any(nullptr) : std::any(shared_contacts_json)},
//{"remote_deleted", 0},
//{"view_once", 0}}, // if !createrecipient -> this message was already skipped
"_id", &retval))
{
Logger::error("Failed to insert message");
continue;
}
long long int new_msg_id = std::any_cast<long long int>(retval);
bool msg_deleted = false;
// add attachments
if (!tgSetAttachment(message_data, datapath, i, new_msg_id))
{
if (body.empty())
{
Logger::warning("Failed to set attachment on otherwise empty message. Deleting message...");
if (d_database.exec("DELETE FROM " + d_mms_table + " WHERE _id = ?", new_msg_id))
msg_deleted = true;
}
else
Logger::warning("Failed to set attachment");
}
// save to map for quotes, we do this AFTER adding attachment, because that
// may delete the new message on failure...
telegram_msg_id_to_adb_msg_id[message_data.valueAsInt(i, "id")] = new_msg_id;
// save message timestamp and id
prevtimestamp_to_id = {message_data.valueAsInt(i, "date"), new_msg_id};
// deal with quotes
if (!message_data.isNull(i, "reply_to_id"))
{
long long int quotemsg = message_data.valueAsInt(i, "reply_to_id");
if (bepaald::contains(telegram_msg_id_to_adb_msg_id, quotemsg))
{
if (d_verbose) [[unlikely]]
Logger::message("Found quote: ", telegram_msg_id_to_adb_msg_id[quotemsg]);
tgSetQuote(telegram_msg_id_to_adb_msg_id[quotemsg], new_msg_id);
}
else
Logger::message("Message was wuote, but quoted message not found...");
}
// set body ranges
if (!tgSetBodyRanges(bodyjson, new_msg_id))
{
// warn?
// error?
// return false?
continue;
}
if (!msg_deleted &&
d_database.getSingleResultAs<std::string>("SELECT body FROM " + d_mms_table + " WHERE _id = ?", new_msg_id, std::string()).empty() && // no message body
d_database.getSingleResultAs<long long int>("SELECT _id FROM " + d_part_table + " WHERE " + d_part_mid + " = ?", new_msg_id, -1) == -1 && // no attachment
d_database.getSingleResultAs<long long int>("SELECT quote_id FROM " + d_mms_table + " WHERE _id = ?", new_msg_id, 0) == 0) // no quote
{
Logger::message("Maybe inserted empty message.");
Logger::message("Data:");
message_data.getRow(i).prettyPrint(d_truncate);
}
}
// else if...
else
{
Logger::warnOnce("Unsupported message type `" + message_data.valueAsString(i, "type") + "'. Skipping...");
continue;
}
}
return true;
}
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