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Class loader, security context stuff, codebase principal.

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beard%netscape.com 1998-12-29 22:31:18 +00:00
parent 1f45aecfb1
commit a19927db5e
1 changed files with 103 additions and 5 deletions
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108
plugin/oji/MRJ/plugin/Source/LiveConnectNativeMethods.cpp
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@ -24,6 +24,8 @@
#include "nsIPluginManager.h"
#include "nsIJVMManager.h"
#include "nsILiveconnect.h"
#include "nsICapsManager.h"
#include "nsISecurityContext.h"
#include "MRJPlugin.h"
#include "MRJContext.h"
@ -47,6 +49,8 @@ static jfieldID netscape_javascript_JSObject_internal;
static jclass netscape_oji_JNIUtils = NULL;
static jmethodID netscape_oji_JNIUtils_NewLocalRef = NULL;
static jmethodID netscape_oji_JNIUtils_GetCurrentThread = NULL;
static jmethodID netscape_oji_JNIUtils_GetCurrentClassLoader = NULL;
static jmethodID netscape_oji_JNIUtils_GetObjectClassLoader = NULL;
nsresult InitLiveConnectSupport(MRJPlugin* jvmPlugin)
{
@ -98,6 +102,8 @@ nsresult InitLiveConnectSupport(MRJPlugin* jvmPlugin)
env->DeleteLocalRef(classJNIUtils);
netscape_oji_JNIUtils_NewLocalRef = env->GetStaticMethodID(netscape_oji_JNIUtils, "NewLocalRef", "(Ljava/lang/Object;)Ljava/lang/Object;");
netscape_oji_JNIUtils_GetCurrentThread = env->GetStaticMethodID(netscape_oji_JNIUtils, "GetCurrentThread", "()Ljava/lang/Object;");
netscape_oji_JNIUtils_GetCurrentClassLoader = env->GetStaticMethodID(netscape_oji_JNIUtils, "GetCurrentClassLoader", "()Ljava/lang/Object;");
netscape_oji_JNIUtils_GetObjectClassLoader = env->GetStaticMethodID(netscape_oji_JNIUtils, "GetObjectClassLoader", "(Ljava/lang/Object;)Ljava/lang/Object;");
}
jvmPlugin->ReleaseJNIEnv(env);
@ -142,6 +148,69 @@ static jobject GetCurrentThread(JNIEnv* env)
return env->CallStaticObjectMethod(netscape_oji_JNIUtils, netscape_oji_JNIUtils_GetCurrentThread);
}
/**
* Security Considerations.
*/
class MRJSecurityContext : public nsISecurityContext {
public:
MRJSecurityContext();
NS_DECL_ISUPPORTS
NS_IMETHOD Implies(const char* target, const char* action, PRBool *bAllowedAccess);
};
MRJSecurityContext::MRJSecurityContext()
{
NS_INIT_REFCNT();
}
// work around a bug in Metrowerks pre-processor.
static NS_DEFINE_IID(kISecurityContextIID, NS_ISECURITYCONTEXT_IID);
NS_IMPL_ISUPPORTS(MRJSecurityContext, kISecurityContextIID)
NS_METHOD MRJSecurityContext::Implies(const char* target, const char* action, PRBool *bAllowedAccess)
{
*bAllowedAccess = (target != NULL && action == NULL);
return NS_OK;
}
static nsISecurityContext* newSecurityContext()
{
MRJSecurityContext* context = new MRJSecurityContext();
NS_IF_ADDREF(context);
return context;
}
static jobject GetCurrentClassLoader(JNIEnv* env)
{
return env->CallStaticObjectMethod(netscape_oji_JNIUtils, netscape_oji_JNIUtils_GetCurrentClassLoader);
}
static jobject GetObjectClassLoader(JNIEnv* env, jobject object)
{
return env->CallStaticObjectMethod(netscape_oji_JNIUtils, netscape_oji_JNIUtils_GetObjectClassLoader, object);
}
static MRJPluginInstance* GetCurrentPlugin(JNIEnv* env)
{
MRJPluginInstance* pluginInstance = NULL;
jobject classLoader = GetCurrentClassLoader(env);
if (classLoader != NULL) {
pluginInstance = MRJPluginInstance::getInstances();
while (pluginInstance != NULL) {
jobject applet;
pluginInstance->GetJavaObject(&applet);
jobject appletClassLoader = GetObjectClassLoader(env, applet);
if (env->IsSameObject(appletClassLoader, classLoader))
break;
pluginInstance = pluginInstance->getNextInstance();
}
}
return pluginInstance;
}
/**
* Sends a message by rendezvousing with an existing JavaScript thread, or creates a new one
* if none exists for this thread already.
@ -185,6 +254,19 @@ static void sendMessage(JNIEnv* env, JavaMessage* msg)
}
}
static nsIPrincipal* newCodebasePrincipal(const char* codebaseURL)
{
nsIPrincipal* principal = NULL;
nsICapsManager* capsManager = NULL;
static NS_DEFINE_IID(kICapsManagerIID, NS_ICAPSMANAGER_IID);
if (thePluginManager->QueryInterface(kICapsManagerIID, &capsManager) == NS_OK) {
if (capsManager->CreateCodebasePrincipal(codebaseURL, &principal) != NS_OK)
principal = NULL;
capsManager->Release();
}
return principal;
}
/****************** Implementation of methods of JSObject *******************/
/*
@ -328,21 +410,31 @@ class CallMessage : public JavaMessage {
jsize mLength;
jobjectArray mJavaArgs;
jobject* mJavaResult;
const char* mCodebaseURL;
public:
CallMessage(jsobject obj, const jchar* functionName, jsize length, jobjectArray java_args, jobject* javaResult);
CallMessage(jsobject obj, const jchar* functionName, jsize length, jobjectArray java_args, jobject* javaResult, const char* codebaseURL);
virtual void execute(JNIEnv* env);
};
CallMessage::CallMessage(jsobject obj, const jchar* functionName, jsize length, jobjectArray javaArgs, jobject* javaResult)
CallMessage::CallMessage(jsobject obj, const jchar* functionName, jsize length, jobjectArray javaArgs, jobject* javaResult, const char* codebaseURL)
: mObject(obj), mFunctionName(functionName), mLength(length),
mJavaArgs(javaArgs), mJavaResult(javaResult)
mJavaArgs(javaArgs), mJavaResult(javaResult), mCodebaseURL(codebaseURL)
{
}
void CallMessage::execute(JNIEnv* env)
{
nsresult status = theLiveConnectManager->Call(env, mObject, mFunctionName, mLength, mJavaArgs, NULL, 0, NULL, mJavaResult);
/* If we have an applet, try to create a codebase principle. */
nsIPrincipal* principal = NULL;
nsISecurityContext* context = NULL;
if (mCodebaseURL != NULL) {
principal = newCodebasePrincipal(mCodebaseURL);
context = newSecurityContext();
}
nsresult status = theLiveConnectManager->Call(env, mObject, mFunctionName, mLength, mJavaArgs, &principal, (principal != NULL ? 1 : 0), context, mJavaResult);
NS_IF_RELEASE(principal);
NS_IF_RELEASE(context);
}
/*
@ -359,6 +451,12 @@ Java_netscape_javascript_JSObject_call(JNIEnv* env, jobject java_wrapper_obj,
return NULL;
}
/* Try to determine which plugin instance is responsible for this thread. This is done by checking class loaders. */
const char* codebaseURL = NULL;
MRJPluginInstance* pluginInstance = GetCurrentPlugin(env);
if (pluginInstance != NULL)
codebaseURL = pluginInstance->getContext()->getDocumentBase();
/* Get the Unicode string for the JS function name */
jboolean is_copy;
const jchar* function_name_ucs2 = env->GetStringChars(function_name_jstr, &is_copy);
@ -367,7 +465,7 @@ Java_netscape_javascript_JSObject_call(JNIEnv* env, jobject java_wrapper_obj,
jsobject js_obj = Unwrap_JSObject(env, java_wrapper_obj);
jobject jresult = NULL;
CallMessage msg(js_obj, function_name_ucs2, function_name_len, java_args, &jresult);
CallMessage msg(js_obj, function_name_ucs2, function_name_len, java_args, &jresult, codebaseURL);
sendMessage(env, &msg);