70 Zeilen
2.6 KiB
Java
70 Zeilen
2.6 KiB
Java
/*
|
|
* This file is a part of the SteamWar software.
|
|
*
|
|
* Copyright (C) 2021 SteamWar.de-Serverteam
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
package de.steamwar.sql;
|
|
|
|
import de.steamwar.sql.internal.Field;
|
|
import de.steamwar.sql.internal.Statement;
|
|
import de.steamwar.sql.internal.Table;
|
|
import lombok.AllArgsConstructor;
|
|
|
|
import java.security.MessageDigest;
|
|
import java.security.NoSuchAlgorithmException;
|
|
import java.security.Timestamp;
|
|
import java.time.Instant;
|
|
|
|
@AllArgsConstructor
|
|
public class NodeDownload {
|
|
|
|
private static final char[] HEX = new char[]{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
|
|
private static final String LINK_BASE = "https://steamwar.de/download.php?schem=";
|
|
|
|
private static final Table<NodeDownload> table = new Table<>(NodeDownload.class);
|
|
private static final Statement insert = table.insertFields("NodeId", "Link");
|
|
|
|
@Field(keys = {Table.PRIMARY})
|
|
private final int nodeId;
|
|
@Field
|
|
private final String link;
|
|
@Field(def = "CURRENT_TIMESTAMP")
|
|
private final Timestamp timestamp;
|
|
|
|
public static String getLink(SchematicNode schem){
|
|
if(schem.isDir())
|
|
throw new SecurityException("Can not Download Directorys");
|
|
MessageDigest digest;
|
|
try {
|
|
digest = MessageDigest.getInstance("SHA-1");
|
|
} catch (NoSuchAlgorithmException e) {
|
|
throw new SecurityException(e);
|
|
}
|
|
digest.reset();
|
|
digest.update((Instant.now().toString() + schem.getOwner() + schem.getId()).getBytes());
|
|
String hash = base16encode(digest.digest());
|
|
insert.update(schem.getId(), hash);
|
|
return LINK_BASE + hash;
|
|
}
|
|
public static String base16encode(byte[] byteArray) {
|
|
StringBuilder hexBuffer = new StringBuilder(byteArray.length * 2);
|
|
for (byte b : byteArray)
|
|
hexBuffer.append(HEX[(b >>> 4) & 0xF]).append(HEX[b & 0xF]);
|
|
return hexBuffer.toString();
|
|
}
|
|
}
|