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Added short overflow check for schematic saving.

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This commit is contained in:
sk89q 2010-10-04 17:00:54 -07:00
parent 713f23d0de
commit 414c3cf33d
3 changed files with 25 additions and 12 deletions
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29
src/RegionClipboard.java
View File

@ -129,12 +129,23 @@ public class RegionClipboard {
*
* @param path
* @throws IOException
* @throws SchematicException
*/
public void saveSchematic(String path) throws IOException {
public void saveSchematic(String path) throws IOException, SchematicException {
int xs = getWidth();
int ys = getHeight();
int zs = getLength();
if (xs > 65535) {
throw new SchematicException("Width of region too large for a .schematic");
}
if (ys > 65535) {
throw new SchematicException("Height of region too large for a .schematic");
}
if (zs > 65535) {
throw new SchematicException("Length of region too large for a .schematic");
}
HashMap<String,Tag> schematic = new HashMap<String,Tag>();
schematic.put("Width", new ShortTag("Width", (short)xs));
schematic.put("Length", new ShortTag("Length", (short)zs));
@ -174,27 +185,27 @@ public class RegionClipboard {
* @param path
* @param origin
* @return
* @throws SchematicLoadException
* @throws SchematicException
* @throws IOException
*/
public static RegionClipboard loadSchematic(String path, Point<Integer> origin)
throws SchematicLoadException, IOException {
throws SchematicException, IOException {
FileInputStream stream = new FileInputStream(path);
NBTInputStream nbtStream = new NBTInputStream(stream);
CompoundTag schematicTag = (CompoundTag)nbtStream.readTag();
if (!schematicTag.getName().equals("Schematic")) {
throw new SchematicLoadException("Tag \"Schematic\" does not exist or is not first");
throw new SchematicException("Tag \"Schematic\" does not exist or is not first");
}
Map<String,Tag> schematic = schematicTag.getValue();
if (!schematic.containsKey("Blocks")) {
throw new SchematicLoadException("Schematic file is missing a \"Blocks\" tag");
throw new SchematicException("Schematic file is missing a \"Blocks\" tag");
}
short xs = (Short)getChildTag(schematic, "Width", ShortTag.class).getValue();
short zs = (Short)getChildTag(schematic, "Length", ShortTag.class).getValue();
short ys = (Short)getChildTag(schematic, "Height", ShortTag.class).getValue();
String materials = (String)getChildTag(schematic, "Materials", StringTag.class).getValue();
if (!materials.equals("Alpha")) {
throw new SchematicLoadException("Schematic file is not an Alpha schematic");
throw new SchematicException("Schematic file is not an Alpha schematic");
}
byte[] blocks = (byte[])getChildTag(schematic, "Blocks", ByteArrayTag.class).getValue();
@ -223,13 +234,13 @@ public class RegionClipboard {
}
private static Tag getChildTag(Map<String,Tag> items, String key, Class expected)
throws SchematicLoadException {
throws SchematicException {
if (!items.containsKey(key)) {
throw new SchematicLoadException("Schematic file is missing a \"" + key + "\" tag");
throw new SchematicException("Schematic file is missing a \"" + key + "\" tag");
}
Tag tag = items.get(key);
if (!expected.isInstance(tag)) {
throw new SchematicLoadException(
throw new SchematicException(
key + " tag is not of tag type " + expected.getName());
}
return tag;

4
src/WorldEdit.java
View File

@ -467,7 +467,7 @@ public class WorldEdit extends Plugin {
logger.log(Level.INFO, player.getName() + " loaded " + filePath);
player.sendMessage(Colors.LightPurple + filename + " loaded.");
}
} catch (SchematicLoadException e) {
} catch (SchematicException e) {
player.sendMessage(Colors.Rose + "Load error: " + e.getMessage());
} catch (IOException e) {
player.sendMessage(Colors.Rose + "Schematic could not read or it does not exist.");
@ -505,6 +505,8 @@ public class WorldEdit extends Plugin {
logger.log(Level.INFO, player.getName() + " saved " + filePath);
player.sendMessage(Colors.LightPurple + filename + " saved.");
}
} catch (SchematicException se) {
player.sendMessage(Colors.Rose + "Save error: " + se.getMessage());
} catch (IOException e) {
player.sendMessage(Colors.Rose + "Schematic could not written.");
}

4
src/com/sk89q/worldedit/SchematicLoadException.java → src/com/sk89q/worldedit/SchematicException.java
View File

@ -23,8 +23,8 @@ package com.sk89q.worldedit;
*
* @author Albert
*/
public class SchematicLoadException extends WorldEditException {
public SchematicLoadException(String error) {
public class SchematicException extends WorldEditException {
public SchematicException(String error) {
super(error);
}
}