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/*
Copyright (C) 2023-2025 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"
#include "../scopeguard/scopeguard.h"
std::string SignalBackup::HTMLwriteAvatar(long long int recipient_id, std::string const &directory,
std::string const &threaddir, bool overwrite, bool append) const
{
std::string avatar;
decltype(d_avatars.end()) pos;
if ((pos =
std::find_if(d_avatars.begin(), d_avatars.end(),
[recipient_id](auto const &p) { return p.first == bepaald::toString(recipient_id); })) != d_avatars.end())
{
AvatarFrame *a = pos->second.get();
ScopeGuard clear_avatar_data([&](){a->clearData();});
std::optional<std::string> mimetype = a->mimetype();
if (!mimetype)
a->attachmentData(); // get the data, so the mimetype gets set.
std::string ext("bin");
mimetype = a->mimetype();
if (mimetype)
ext = MimeTypes::getExtension(*mimetype, "bin");
avatar = "media/Avatar_" + pos->first + "." + ext;
// directory + threaddir is guaranteed to exist at this point, check/create 'media'
if (!bepaald::fileOrDirExists(directory + "/" + threaddir + "/media"))
{
if (!bepaald::createDir(directory + "/" + threaddir + "/media"))
{
Logger::error("Failed to create directory `", directory, "/", threaddir, "/media");
return std::string();
}
}
else if (!bepaald::isDir(directory + "/" + threaddir + "/media"))
{
Logger::error("Failed to create directory `", directory, "/", threaddir, "/media");
return std::string();
}
// check actual avatar file
if (bepaald::fileOrDirExists(directory + "/" + threaddir + "/" + avatar))
{
if (append) // file already exists, but we were asked to just use the existing file, so we're done
return avatar;
if (!overwrite) // file already exists, but we were no asked to overwrite -> error!
{
Logger::error("Avatar file exists. Not overwriting");
return std::string();
}
}
// directory exists, now write avatar
std::ofstream avatarstream(WIN_LONGPATH(directory + "/" + threaddir + "/" + avatar), std::ios_base::binary);
if (!avatarstream.is_open())
{
Logger::error("Failed to open file for writing: '", directory, "/", threaddir, "/", avatar, "'");
return std::string();
}
else
{
unsigned char const *avatardata = a->attachmentData();
if (!avatardata || !avatarstream.write(reinterpret_cast<char const *>(avatardata), a->attachmentSize()))
return std::string();
}
}
return avatar;
}
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