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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/>.
*/
#ifndef DESKTOPDATABASE_H_
#define DESKTOPDATABASE_H_
#include <cstdlib>
#include <memory>
#include <set>
#include "../logger/logger.h"
#include "../common_filesystem.h"
#include "../memsqlitedb/memsqlitedb.h"
#include "../sqlcipherdecryptor/sqlcipherdecryptor.h"
class DesktopDatabase
{
std::unique_ptr<SqlCipherDecryptor> d_cipherdb;
std::unique_ptr<unsigned char[]> d_rawdb;
MemSqliteDB d_database;
std::string d_configdir;
std::string d_databasedir;
std::string d_hexkey;
bool d_ok;
bool d_verbose;
bool d_dbus_verbose;
bool d_ignorewal;
long long int d_cipherversion;
bool d_truncate;
bool d_showkey;
public:
inline DesktopDatabase(std::string const &hexkey, bool verbose, bool ignorewal, long long int cipherversion,
bool truncate, bool showkey, bool dbus_verbose);
inline DesktopDatabase(std::string const &configdir, std::string const &databasedir, std::string const &rawdb,
std::string const &hexkey, bool verbose, bool ignorewal, long long int cipherversion,
bool truncate, bool showkey, bool dbus_verbose);
DesktopDatabase(DesktopDatabase const &other) = delete;
DesktopDatabase(DesktopDatabase &&other) = delete;
DesktopDatabase &operator=(DesktopDatabase const &other) = delete;
DesktopDatabase &operator=(DesktopDatabase &&other) = delete;
inline bool ok() const;
inline bool dumpDb(std::string const &file, bool overwrite) const;
inline std::string const &getConfigDir() const;
inline std::string const &getDatabaseDir() const;
inline void runQuery(std::string const &q, std::string const &mode = std::string()) const;
private:
bool init(std::string const &rawdb = std::string());
inline std::pair<std::string, std::string> getDesktopDir() const;
std::string readEncryptedKey() const;
bool getKey();
bool getKeyFromEncrypted();
#if defined(_WIN32) || defined(__MINGW64__)
bool getKeyFromEncrypted_win();
#else
bool getKeyFromEncrypted_mac_linux();
std::string decryptKey_linux_mac(std::string const &secret, std::string const &encryptedkeystr, bool last = true) const;
#endif
#if defined(__APPLE__) && defined(__MACH__) // if apple...
void getSecrets_mac(std::set<std::string> *secrets) const;
#elif !defined(_WIN32) && !defined(__MINGW64__) // not apple, but also not windows
void getSecrets_linux_SecretService(std::set<std::string> *secrets) const;
void getSecrets_linux_Kwallet(int version, std::set<std::string> *secrets) const;
#endif
friend class SignalBackup;
friend class DummyBackup;
};
inline DesktopDatabase::DesktopDatabase(std::string const &hexkey, bool verbose, bool ignorewal,
long long int cipherversion, bool truncate, bool showkey,
bool dbus_verbose)
:
DesktopDatabase(std::string(), std::string(), std::string(), hexkey, verbose, ignorewal, cipherversion, truncate, showkey, dbus_verbose)
{}
inline DesktopDatabase::DesktopDatabase(std::string const &configdir, std::string const &databasedir, std::string const &rawdb,
std::string const &hexkey, bool verbose, bool ignorewal, long long int cipherversion,
bool truncate, bool showkey, bool dbus_verbose)
:
d_configdir(configdir),
d_databasedir(databasedir),
d_hexkey(hexkey),
d_ok(false),
d_verbose(verbose),
d_dbus_verbose(dbus_verbose),
d_ignorewal(ignorewal),
d_cipherversion(cipherversion),
d_truncate(truncate),
d_showkey(showkey)
{
d_ok = init(rawdb);
}
inline bool DesktopDatabase::ok() const
{
return d_ok;
}
inline std::pair<std::string, std::string> DesktopDatabase::getDesktopDir() const
{
#if defined(_WIN32) || defined(__MINGW64__)
// Windows: concatenate HOMEDRIVE+HOMEPATH
// probably only works on windows 7 and newer? (if at all)
const char *homedrive_cs = std::getenv("HOMEDRIVE");
const char *homepath_cs = std::getenv("HOMEPATH");
if (homedrive_cs == nullptr || homepath_cs == nullptr)
return {std::string(), std::string()};
std::string home = std::string(homedrive_cs) + std::string(homepath_cs);
if (home.empty())
return {std::string(), std::string()};
if (bepaald::isDir(home + "/AppData/Roaming/Signal"))
return {home + "/AppData/Roaming/Signal", home + "/AppData/Roaming/Signal"};
else if (bepaald::isDir(home + "/AppData/Roaming/Signal Beta"))
return {home + "/AppData/Roaming/Signal Beta", home + "/AppData/Roaming/Signal Beta"};
else
return {std::string(), std::string()};
#else
char const *homedir_cs = std::getenv("HOME");
if (homedir_cs == nullptr)
return {std::string(), std::string()};
std::string homedir(homedir_cs);
if (homedir.empty())
return {std::string(), std::string()};
#if defined(__APPLE__) && defined(__MACH__)
if (bepaald::isDir(homedir + "/Library/Application Support/Signal"))
return {homedir + "/Library/Application Support/Signal", homedir + "/Library/Application Support/Signal"};
if (bepaald::isDir(homedir + "/Library/Application Support/Signal Beta"))
return {homedir + "/Library/Application Support/Signal Beta", homedir + "/Library/Application Support/Signal Beta"};
else
return {std::string(), std::string()};
#else // !windows && !mac
if (bepaald::isDir(homedir + "/.config/Signal"))
return {homedir + "/.config/Signal", homedir + "/.config/Signal"};
if (bepaald::isDir(homedir + "/.config/Signal Beta"))
return {homedir + "/.config/Signal Beta", homedir + "/.config/Signal Beta"};
else
return {std::string(), std::string()};
#endif
#endif
}
inline bool DesktopDatabase::dumpDb(std::string const &file, bool overwrite) const
{
if (bepaald::fileOrDirExists(file) && !overwrite)
{
Logger::message("File '", file, "' exists, use `--overwrite` to overwrite.");
return false;
}
if (!d_database.saveToFile(file))
{
Logger::error("Failed to save Signal Desktop sql database to file '", file, "'");
return false;
}
return true;
}
inline std::string const &DesktopDatabase::getConfigDir() const
{
return d_configdir;
}
inline std::string const &DesktopDatabase::getDatabaseDir() const
{
return d_databasedir;
}
inline void DesktopDatabase::runQuery(std::string const &q, std::string const &mode) const
{
Logger::message(" * Executing query: ", q);
SqliteDB::QueryResults res;
if (!d_database.exec(q, &res))
return;
std::string q_comm(q, 0, STRLEN("DELETE")); // delete, insert and update are same length...
std::for_each(q_comm.begin(), q_comm.end(), [] (char &ch) { ch = std::toupper(ch); });
if (q_comm == "DELETE" || q_comm == "INSERT" || q_comm == "UPDATE")
{
Logger::message("Modified ", d_database.changed(), " rows");
if (res.rows() == 0 && res.columns() == 0)
return;
}
if (mode == "pretty")
res.prettyPrint(d_truncate);
else if (mode == "line")
res.printLineMode();
else if (mode == "single")
res.printSingleLine();
else
res.print();
}
#endif
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