136 lines
3.7 KiB
C++
136 lines
3.7 KiB
C++
/* This file is part of libravatarserv.
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* Copyright © 2018 tastytea <tastytea@tastytea.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <iostream>
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#include <cstdlib>
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#include <basedir.h>
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#include "version.hpp"
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#include "libravatarserv.hpp"
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using std::cout;
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using std::cerr;
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using std::endl;
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using global::avatar_dir;
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// Global variables
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std::map<const string, const string> hash::table;
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fs::path global::avatar_dir = "";
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int main()
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{
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cout << "Server: libravatarserv/" << global::version << endl;
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cout << "Cache-Control: max-age=86400\n";
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cout << "Connection: close\n";
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const char *request = std::getenv("REQUEST_URI");
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if (request == nullptr)
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{
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cout << "Status: 404 Not Found\n\n";
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cerr << "Error: ${REQUEST_URI} is empty.\n";
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return 1;
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}
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if (!find_avatar_dir())
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{
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cout << "Status: 404 Not Found\n\n";
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cerr << "Error: No avatars found.\n";
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return 3;
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}
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hash::fill_table();
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http::Request avatar = http::parse_request(request);
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image::Image image = image::get(avatar.digest, avatar.size);
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if (image.error == 0)
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{
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image::write(image);
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}
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else
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{
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cerr << "Error " << std::to_string(image.error) << ": Could not open file.\n";
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if (avatar.fallback.empty())
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{
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cout << "Status: 404 Not Found\n\n";
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}
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else
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{
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if (avatar.fallback.substr(0, 4) == "http")
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{
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cout << "Status: 307 Temporary Redirect\n";
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cout << "Location: " << avatar.fallback << endl << endl;
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}
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else if (avatar.fallback.substr(0, 2) == "mp" ||
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avatar.fallback.substr(0, 2) == "mm")
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{
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// MD5 hash of 'mp'
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image = image::get("1f2dfa567dcf95833eddf7aec167fec7",
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avatar.size);
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if (image.error == 0)
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{
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image::write(image);
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}
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else
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{
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cout << "Status: 404 Not Found\n\n";
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cerr << "Mystery person not found.\n";
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}
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}
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}
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}
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return 0;
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}
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bool find_avatar_dir()
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{
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const char *envdir = std::getenv("LIBRAVATARSERV_DIR");
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if (envdir == nullptr)
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{
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// TODO: Remove AVATAR_DIR in 1.0.0
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// DEPRECATED because it is potentially used by another program
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envdir = std::getenv("AVATAR_DIR");
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}
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if (envdir != nullptr && fs::is_directory(envdir))
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{
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avatar_dir = envdir;
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}
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else
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{
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xdgHandle xdg;
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xdgInitHandle(&xdg);
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auto data_dirs = xdgDataDirectories(&xdg);
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const uint8_t size = sizeof(data_dirs) / sizeof(*data_dirs);
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for (uint8_t index = 0; index <= size; ++index)
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{
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const string searchdir = data_dirs[index] + string("/libravatarserv");
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if (fs::is_directory(searchdir))
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{
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avatar_dir = searchdir;
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break;
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}
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}
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xdgWipeHandle(&xdg);
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if (avatar_dir.empty())
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{
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return false;
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}
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}
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return true;
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}
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