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/*
Copyright (C) 2022-2024 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::scrambleHelper(std::string const &table, std::vector<std::string> const &columns) const
{
Logger::message("Scrambling ", table);
std::string selectquery = "SELECT _id";
for (unsigned int i = 0; i < columns.size(); ++i)
selectquery += "," + columns[i];
selectquery += " FROM " + table;
SqliteDB::QueryResults res;
d_database.exec(selectquery, &res);
for (unsigned int i = 0; i < res.rows(); ++i)
{
std::vector<std::string> str;
for (unsigned int j = 0; j < columns.size(); ++j)
{
str.push_back(res.valueAsString(i, columns[j]));
std::replace_if(str.back().begin(), str.back().end(), [](char c)
{
return c != ' ' && std::islower(c);
}, 'x');
std::replace_if(str.back().begin(), str.back().end(), [](char c)
{
return c != ' ' && !std::islower(c);
}, 'X');
}
std::string updatequery = "UPDATE " + table + " SET ";
for (unsigned int j = 0; j < columns.size(); ++j)
updatequery += columns[j] + " = ?" + ((j == columns.size() - 1) ? " WHERE _id = ?" : ", ");
std::vector<std::any> values;
for (unsigned int j = 0; j < str.size(); ++j)
values.push_back(str[j]);
values.push_back(res.getValueAs<long long int>(i, "_id"));
if (!d_database.exec(updatequery, values))
return false;
}
return true;
}
bool SignalBackup::scramble() const
{
if (d_database.containsTable("sms"))
if (!scrambleHelper("sms", {"body"}))
return false;
if (!scrambleHelper(d_mms_table, {"body", "quote_body"}))
return false;
if (!scrambleHelper("recipient", {d_recipient_system_joined_name, "profile_joined_name", d_recipient_profile_given_name, "profile_family_name", "system_family_name", "system_given_name"}))
return false;
if (!scrambleHelper("thread", {"snippet"}))
return false;
if (!scrambleHelper("groups", {"title"}))
return false;
return true;
}
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