342 lines
11 KiB
C++
342 lines
11 KiB
C++
#include "de_mrbesen_cppplugins_CppPlugin.h"
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#include "de_mrbesen_cppplugins_CppPlugin_CppListener.h"
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#include <iostream>
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#include <dlfcn.h> //dynamic linking
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#include <libgen.h> //basename
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#include <thread> //thread id
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#include "libplugin.h"
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#include "plugin.h"
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namespace Plugin {
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jclass CPPPLUGINCLASS;
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jclass EVENTCLASS;
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jclass MAPCLASS;
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jclass LISTENERCLASS;
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jclass CMDCLASS;
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jclass BUKKITCLASS;
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jclass CBSERVERCLASS;
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jclass CMDMAPCLASS;
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jclass CMDSENDERCLASS;
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jfieldID EVENTDATAF;
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jfieldID EVENTNAMEF;
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jfieldID PLUGINIDF;
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jfieldID BUKKITSERVER;
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jfieldID SERVERCMDMAP;
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jmethodID MAPGET;
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jmethodID MAPPUT;
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jmethodID MAPCLEAR;
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jmethodID LISTENERCONTR;
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jmethodID LISTENERSMALLCONTR;
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jmethodID CMDCONSTR;
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jmethodID CMDMAPREGISTER;
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jmethodID CMDSENDERSEND;
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std::vector<CppPlugin*> plugins;
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/*
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void fixcap(JNIEnv* env) {
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DEB("ensure 1024" );
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env->EnsureLocalCapacity(1024);
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DEB("push frame 1024" );
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env->PushLocalFrame(1024);
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}*/
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CppPlugin* getPlugin(JNIEnv* env, jobject thisobj, int id) {
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//get id
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if(id < 0) {
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load(env, JNI_PLUGINIDFIELD);
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id = env->GetIntField(thisobj, PLUGINIDF);
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}
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return plugins.at(id);
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}
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void load(JNIEnv* env, long data) {
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if(data & (JNI_PLUGINCLASS | JNI_PLUGINIDFIELD))
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CPPPLUGINCLASS = env->FindClass("de/mrbesen/cppplugins/CppPlugin");
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if(data & (JNI_EVENTCLASS | JNI_EVENTDATAFIELD | JNI_EVENTNAMEFIELD))
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EVENTCLASS = env->FindClass("de/mrbesen/cppplugins/CppEvent");
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if(data & (JNI_MAPCLASS | JNI_MAPCLEARMETH | JNI_MAPGETMETH | JNI_MAPPUTMETH))
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MAPCLASS = env->FindClass("java/util/Map");
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if(data & (JNI_LISTENERCLASS | JNI_LISTENERCONSTR | JNI_LISTENERSMALLCONSTR))
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LISTENERCLASS = env->FindClass("de/mrbesen/cppplugins/CppPlugin$CppListener");
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if(data & (JNI_CMDCLASS | JNI_CMDCONSTR))
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CMDCLASS = env->FindClass("de/mrbesen/cppplugins/CppPlugin$CppCommand");
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if(data & JNI_BUKKITCLASS)
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BUKKITCLASS = env->FindClass("org/bukkit/Bukkit");
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if(data & (JNI_CBSERVERCLASS | JNI_SERVERCMDMAPFIELD))
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CBSERVERCLASS = env->FindClass("org/bukkit/craftbukkit/v1_12_R1/CraftServer");
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if(data & (JNI_CMDMAPCLASS | JNI_CMDMAPREGISTERMETH))
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CMDMAPCLASS = env->FindClass("org/bukkit/command/SimpleCommandMap");
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if(data & (JNI_CMDSENDERCLASS | JNI_CMDSENDERSENDMETH))
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CMDSENDERCLASS = env->FindClass("org/bukkit/command/CommandSender");
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if(data & JNI_EVENTDATAFIELD)
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EVENTDATAF = env->GetFieldID(EVENTCLASS, "data", "Ljava/util/Map;");
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if(data & JNI_EVENTNAMEFIELD)
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EVENTNAMEF = env->GetFieldID(EVENTCLASS, "name", "Ljava/lang/String;");
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if(data & JNI_PLUGINIDFIELD)
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PLUGINIDF = env->GetFieldID(CPPPLUGINCLASS, "id", "I");
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if(data & JNI_BUKKITSERVFIELD)
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BUKKITSERVER = env->GetStaticFieldID(BUKKITCLASS, "server", "Lorg/bukkit/Server;");
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if(data & JNI_SERVERCMDMAPFIELD)
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SERVERCMDMAP = env->GetFieldID(CBSERVERCLASS, "commandMap", "Lorg/bukkit/command/SimpleCommandMap;");
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if(data & JNI_MAPGETMETH)
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MAPGET = env->GetMethodID(MAPCLASS, "get", "(Ljava/lang/Object;)Ljava/lang/Object;");
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if(data & JNI_MAPPUTMETH)
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MAPPUT = env->GetMethodID(MAPCLASS, "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
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if(data & JNI_MAPCLEARMETH)
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MAPCLEAR = env->GetMethodID(MAPCLASS, "clear", "()V");
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if(data & JNI_LISTENERCONSTR)
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LISTENERCONTR = env->GetMethodID(LISTENERCLASS, "<init>", "(Ljava/lang/String;J)V");
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if(data & JNI_LISTENERSMALLCONSTR)
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LISTENERSMALLCONTR = env->GetMethodID(LISTENERCLASS, "<init>", "()V");
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if(data & JNI_CMDCONSTR)
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CMDCONSTR = env->GetMethodID(CMDCLASS, "<init>", "(Ljava/lang/String;JI)V");
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if(data & JNI_CMDMAPREGISTERMETH)
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CMDMAPREGISTER = env->GetMethodID(CMDMAPCLASS, "register", "(Ljava/lang/String;Lorg/bukkit/command/Command;)Z");
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if(data & JNI_CMDSENDERSENDMETH)
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CMDSENDERSEND = env->GetMethodID(CMDSENDERCLASS, "sendMessage", "(Ljava/lang/String;)V");
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if(((!CPPPLUGINCLASS) + (!EVENTCLASS) + (!MAPCLASS) + (!LISTENERCLASS) + (!CMDCLASS) + (!BUKKITCLASS) + (!CBSERVERCLASS) + (!CMDMAPCLASS)//wenn eins == nullptr ist -> wird zu 1 -> endergebniss != 0 -> fehler
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+ (!EVENTDATAF) + (!EVENTNAMEF) + (!PLUGINIDF) + (!BUKKITSERVER) + (!SERVERCMDMAP)
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+ (!MAPGET) + (!MAPPUT) + (!MAPCLEAR) + (!LISTENERCONTR) + (!LISTENERSMALLCONTR) + (!CMDCONSTR) + (!CMDMAPREGISTER)) != 0) {
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DEB(CRED << "Error loading a Java Information:");
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DEB("find classes: " << (!!CPPPLUGINCLASS) << (!!EVENTCLASS) << (!!MAPCLASS) << (!!LISTENERCLASS) << (!!CMDCLASS) << (!!BUKKITCLASS) << (!!CBSERVERCLASS) << (!!CMDMAPCLASS));
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DEB("find fields: " << (!!EVENTDATAF) << (!!EVENTNAMEF) << (!!PLUGINIDF) << (!!BUKKITSERVER) << (!!SERVERCMDMAP));
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DEB("find methods: " << (!!MAPGET) << (!!MAPPUT) << (!!MAPCLEAR) << (!!LISTENERCONTR) << (!!LISTENERSMALLCONTR) << (!!CMDCONSTR) << (!!CMDMAPREGISTER));
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}
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}
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bool registerCmd(JNIEnv* env, CppPlugin* plugin, std::string& cname, cmdfptr function) {
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DEB(CYELLOW << "Register Cmd " << CGREEN << cname << CYELLOW << " for " << CGREEN << plugin->name);
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load(env, JNI_BUKKITCLASS | JNI_SERVERCMDMAPFIELD | JNI_CMDCONSTR | JNI_CMDMAPREGISTERMETH);
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// create cnd
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jstring name = env->NewStringUTF(cname.c_str());
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jobject cmd = env->NewObject(CMDCLASS, CMDCONSTR, name, reinterpret_cast<jlong>(function), plugin->id);
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env->DeleteLocalRef(name);
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//call register
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// ((CraftServer) Bukkit.getServer()).getCommandMap().register(fallbackprefix, cmd);
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jobject jserver = env->GetStaticObjectField(BUKKITCLASS, BUKKITSERVER);
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jobject cmdmap = env->GetObjectField(jserver, SERVERCMDMAP);
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jstring fallbackprefix = env->NewStringUTF(plugin->name.c_str());
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return env->CallBooleanMethod(cmdmap, CMDMAPREGISTER, fallbackprefix, cmd);
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}
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void send(JNIEnv* env, jobject sender, const char* text) {
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load(env, JNI_CMDSENDERSENDMETH);
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jstring jtext = env->NewStringUTF(text);
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env->CallVoidMethod(sender, CMDSENDERSEND, jtext);
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env->DeleteLocalRef(jtext);
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}
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} //namespace
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JNIEXPORT jboolean JNICALL Java_de_mrbesen_cppplugins_CppPlugin_init_1(JNIEnv* env, jclass pluginclass) {
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Plugin::load(env, Plugin::JNI_ALL);
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return true;
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}
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/**
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* Class: de_mrbesen_cppplugins_CppPlugin
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* Method: loadPlugin
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* Signature: (Ljava/lang/String;)Z
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*/
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JNIEXPORT jboolean JNICALL Java_de_mrbesen_cppplugins_CppPlugin_loadPlugin(JNIEnv* env, jobject thisobj, jstring path) {
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const char* cpath = env->GetStringUTFChars(path, 0);
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//open plugin
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DEB(CBLUE << "open plugin " << cpath);
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void* handle = dlopen(cpath, RTLD_LAZY);
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if (!handle) {
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std::cout << "could not create handle of: " << cpath << " error: " << dlerror() << std::endl;
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return false;
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}
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//throw std::string("Error: plugin could not be opend. ") + dlerror();
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//load function pointer
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Plugin::initfptr initf = (Plugin::initfptr) dlsym(handle, "init");
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if(!initf) {
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std::cout << "Could not find function init: " << dlerror() << std::endl;
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dlclose(handle);
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return false;
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}
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Plugin::CppPlugin* plugin = initf();
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DEB(CGREY << "Initilized");
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plugin->handle = handle;
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//set name / handle id
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plugin->name = std::string(cpath);
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plugin->name = plugin->name.substr(plugin->name.rfind('/')+1);
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DEB(CGREY << "name set");
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// add to vector
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Plugin::plugins.push_back(plugin);
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int id = Plugin::plugins.size()-1;
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plugin->id = id;
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DEB(CGREY << "plugin added to vector");
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//store id
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Plugin::load(env,Plugin:: JNI_ALL);
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env->SetIntField(thisobj,Plugin:: PLUGINIDF, id);
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DEB(CGREY << "Internal id set");
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return (bool) plugin; // converted to boolean here
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}
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/*
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* Class: de_mrbesen_cppplugins_CppPlugin
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* Method: onLoad
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* Signature: ()V
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*/
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JNIEXPORT void JNICALL Java_de_mrbesen_cppplugins_CppPlugin_onLoad(JNIEnv* env, jobject thisobj) {
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DEB(CGREY << "lib::onLoad()");
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Plugin::getPlugin(env, thisobj)->onLoad(env);
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}
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/*
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* Class: de_mrbesen_cppplugins_CppPlugin
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* Method: onEnable_
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* Signature: ()V
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*/
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JNIEXPORT void JNICALL Java_de_mrbesen_cppplugins_CppPlugin_onEnable_1(JNIEnv* env, jobject thisobj) {
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DEB(CGREY << "lib::onEnable()");
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Plugin::getPlugin(env, thisobj)->onEnable(env);
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}
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/*
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* Class: de_mrbesen_cppplugins_CppPlugin
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* Method: onDisable_
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* Signature: ()V
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*/
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JNIEXPORT void JNICALL Java_de_mrbesen_cppplugins_CppPlugin_onDisable_1(JNIEnv* env, jobject thisobj) {
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//TODO
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DEB(CGREY << "lib::onDisable()");
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Plugin::CppPlugin* plugin = Plugin::getPlugin(env, thisobj);
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plugin->onDisable(env);
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dlclose(plugin->handle);
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}
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/*
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* Class: de_mrbesen_cppplugins_CppPlugin
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* Method: fireEvent
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* Signature: (Lde/mrbesen/cppplugins/CppEvent;I)Lde/mrbesen/cppplugins/CppEvent;
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*/
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JNIEXPORT jobject JNICALL Java_de_mrbesen_cppplugins_CppPlugin_fireEvent(JNIEnv* env, jobject thisobj, jobject jevent, jlong functionid) {
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DEB(CGREY << "lib::fireEvent()");
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if(functionid == 0) {
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DEB(CRED << "invalid function id");
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return jevent;
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}
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Plugin::load(env, Plugin::JNI_EVENT | Plugin::JNI_MAP);
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//cast function
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Plugin::eventfptr f = reinterpret_cast<Plugin::eventfptr>(functionid);
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//cast event
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Plugin::Event event(env, jevent);
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//get Plugin
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Plugin::CppPlugin* plugin = Plugin::getPlugin(env, thisobj);
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//call it
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try {
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f(env, plugin, &event);
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} catch(...) {
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std::cout << CRED << "Error while processing Event " << event.getName() << " in plugin: " << plugin->name << CRESET << std::endl;
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return jevent;
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}
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//put changed fields back in the jevent
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event.reapply(env, jevent);
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return jevent;
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}
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/*
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* Class: de_mrbesen_cppplugins_CppPlugin
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* Method: onCmd
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* Signature: (Lorg/bukkit/command/CommandSender;Lorg/bukkit/command/Command;Ljava/lang/String;[Ljava/lang/String;J)Z
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*/
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JNIEXPORT jboolean JNICALL Java_de_mrbesen_cppplugins_CppPlugin_onCmd(JNIEnv* env, jclass cppplugin, jobject sender, jobject cmd, jstring label, jobjectArray args, jlong fid, jint pluginid) {
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if(fid == 0) return false;
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Plugin::CppPlugin* plugin = Plugin::getPlugin(pluginid);
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//parse args
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int argsize = env->GetArrayLength(args);
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std::vector<std::string> cargs(argsize);
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for(int i = 0; i < argsize; i++) {
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jstring ar = (jstring) env->GetObjectArrayElement(args, i);
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cargs[i] = env->GetStringUTFChars(ar, 0);
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}
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//parse label
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std::string clabel = env->GetStringUTFChars(label, 0);
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//call function
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Plugin::cmdfptr cmdf = reinterpret_cast<Plugin::cmdfptr>(fid);
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bool result = false;
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try {
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result = cmdf(env, plugin, sender, cmd, clabel, cargs);
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} catch(...) {
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std::cout << CRED << "Error while executing Command " << clabel << " in plugin: " << plugin->name << CRESET << std::endl;
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return false;
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}
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return result;
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}
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/*
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* Class: de_mrbesen_cppplugins_CppPlugin
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* Method: getListener
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* Signature: ()[Lde/mrbesen/cppplugins/CppPlugin/CppListener;
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*/
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JNIEXPORT jobjectArray JNICALL Java_de_mrbesen_cppplugins_CppPlugin_getListener(JNIEnv* env, jobject thisobj) {
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Plugin::load(env, Plugin::JNI_LISTENER);
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//call getEvents
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std::map<std::string, Plugin::eventfptr> events = Plugin::getPlugin(env, thisobj)->getEvents();
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DEB(CYELLOW << "found " << events.size() << " Events" );
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//create array
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jobject initial = env->NewObject(Plugin::LISTENERCLASS, Plugin::LISTENERSMALLCONTR);
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jobjectArray arr = env->NewObjectArray(events.size(), Plugin::LISTENERCLASS, initial);
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DEB(CGREY << "populate array" );
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//populate array
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int i = 0;
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for(auto it : events) {
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//create object
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jstring eventname = env->NewStringUTF(it.first.c_str());
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jobject listener = env->NewObject(Plugin::LISTENERCLASS, Plugin::LISTENERCONTR, eventname, it.second);
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env->DeleteLocalRef(eventname);
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//set array
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env->SetObjectArrayElement(arr, i++, listener);
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}
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DEB(CGREY << "Array finished" );
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return arr;
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}
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