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Code Issues Projects Releases Wiki Activity

Permit cross edges when validating dependencies. FIXES 91.

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This commit is contained in:
Kristian S. Stangeland 2013-05-13 03:49:48 +02:00
parent 6af440789c
commit 02b5dec304
2 changed files with 211 additions and 200 deletions
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24
ProtocolLib/src/main/java/com/comphenix/protocol/injector/PluginVerifier.java
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@ -83,7 +83,7 @@ class PluginVerifier {
* @throws PluginNotFoundException If a plugin with the given name cannot be found.
*/
private Plugin getPlugin(String pluginName) {
Plugin plugin = Bukkit.getPluginManager().getPlugin(pluginName);
Plugin plugin = getPluginOrDefault(pluginName);
// Ensure that the plugin exists
if (plugin != null)
@ -92,6 +92,15 @@ class PluginVerifier {
throw new PluginNotFoundException("Cannot find plugin " + pluginName);
}
/**
* Retrieve a plugin by name.
* @param pluginName - the non-null name of the plugin to retrieve.
* @return The retrieved plugin, or NULL if not found.
*/
private Plugin getPluginOrDefault(String pluginName) {
return Bukkit.getPluginManager().getPlugin(pluginName);
}
/**
* Performs simple verifications on the given plugin.
* <p>
@ -183,15 +192,15 @@ class PluginVerifier {
return Sets.newHashSet(list);
}
// Avoid cycles
private boolean hasDependency(Plugin plugin, Plugin dependency, Set<String> checked) {
// Avoid cycles. DFS.
private boolean hasDependency(Plugin plugin, Plugin dependency, Set<String> checking) {
Set<String> childNames = Sets.union(
safeConversion(plugin.getDescription().getDepend()),
safeConversion(plugin.getDescription().getSoftDepend())
);
// Ensure that the same plugin isn't processed twice
if (!checked.add(plugin.getName())) {
if (!checking.add(plugin.getName())) {
throw new IllegalStateException("Cycle detected in dependency graph: " + plugin);
}
// Look for the dependency in the immediate children
@ -201,13 +210,16 @@ class PluginVerifier {
// Recurse through their dependencies
for (String childName : childNames) {
Plugin childPlugin = getPlugin(childName);
Plugin childPlugin = getPluginOrDefault(childName);
if (hasDependency(childPlugin, dependency, checked)) {
if (childPlugin != null && hasDependency(childPlugin, dependency, checking)) {
return true;
}
}
// Cross edges are permitted
checking.remove(plugin.getName());
// No dependency found!
return false;
}

1
ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/InjectedArrayList.java
View File

@ -23,7 +23,6 @@ import java.util.ArrayList;
import java.util.Set;
import java.util.concurrent.ConcurrentMap;
import com.comphenix.protocol.Packets;
import com.comphenix.protocol.ProtocolLibrary;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;