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Add more validation to server icons. Closes #828

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This commit is contained in:
md_5 2014-01-22 12:16:48 +11:00
parent dae96ac18b
commit 5f7963b0c4
1 changed files with 19 additions and 1 deletions
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20
proxy/src/main/java/net/md_5/bungee/conf/Configuration.java
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@ -4,6 +4,9 @@ import com.google.common.base.Preconditions;
import com.google.common.io.BaseEncoding;
import com.google.common.io.Files;
import gnu.trove.map.TMap;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
@ -11,6 +14,7 @@ import java.util.Collection;
import java.util.Map;
import java.util.UUID;
import java.util.logging.Level;
import javax.imageio.ImageIO;
import lombok.Getter;
import net.md_5.bungee.api.ProxyConfig;
import net.md_5.bungee.api.ProxyServer;
@ -63,7 +67,21 @@ public class Configuration implements ProxyConfig
{
try
{
favicon = "data:image/png;base64," + BaseEncoding.base64().encode( Files.toByteArray( fav ) );
BufferedImage image = ImageIO.read( fav );
if ( image.getHeight() == 64 && image.getWidth() == 64 )
{
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
ImageIO.write( image, "png", bytes );
favicon = "data:image/png;base64," + BaseEncoding.base64().encode( bytes.toByteArray() );
if ( favicon.length() > Short.MAX_VALUE )
{
ProxyServer.getInstance().getLogger().log( Level.WARNING, "Favicon file too large for server to process" );
favicon = null;
}
} else
{
ProxyServer.getInstance().getLogger().log( Level.WARNING, "Server icon must be exactly 64x64 pixels" );
}
} catch ( IOException ex )
{
ProxyServer.getInstance().getLogger().log( Level.WARNING, "Could not load server icon", ex );