mirror of https://github.com/status-im/evmc.git
585 lines
19 KiB
C
585 lines
19 KiB
C
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#include <assert.h>
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#include <stdlib.h>
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#include "host.h"
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static JavaVM* jvm;
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int set_jvm(JNIEnv* jenv)
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{
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return (*jenv)->GetJavaVM(jenv, &jvm);
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}
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static JNIEnv* attach()
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{
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JNIEnv* jenv;
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jint rs = (*jvm)->AttachCurrentThread(jvm, (void**)&jenv, NULL);
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assert(rs == JNI_OK);
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return jenv;
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}
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static bool account_exists_fn(struct evmc_host_context* context, const evmc_address* address)
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{
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bool result = false;
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const char java_method_name[] = "account_exists";
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const char java_method_signature[] = "(I[B)I";
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JNIEnv* jenv = attach();
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if (jenv != NULL)
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{
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jclass host_class;
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jmethodID method;
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jint jcontext_index;
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jbyteArray jaddress;
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// get java class
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host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
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assert(host_class != NULL);
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// get java method
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method =
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(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
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assert(method != NULL);
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// set java method params
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assert(context != NULL);
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jcontext_index = context->index;
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jaddress = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
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assert(jaddress != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jaddress, 0, sizeof(struct evmc_address),
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(jbyte*)address);
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assert(jaddress != NULL);
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// call java method
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jint jresult =
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(*jenv)->CallStaticIntMethod(jenv, host_class, method, jcontext_index, jaddress);
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result = !!jresult;
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}
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return result;
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}
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static evmc_bytes32 get_storage_fn(struct evmc_host_context* context,
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const evmc_address* address,
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const evmc_bytes32* key)
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{
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evmc_bytes32 result;
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const char java_method_name[] = "get_storage";
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const char java_method_signature[] = "(I[B[B)Ljava/nio/ByteBuffer;";
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JNIEnv* jenv = attach();
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if (jenv != NULL)
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{
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jclass host_class;
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jmethodID method;
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jint jcontext_index;
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jbyteArray jaddress;
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jbyteArray jkey;
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// get java class
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host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
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assert(host_class != NULL);
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// get java method
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method =
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(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
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assert(method != NULL);
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// set java method params
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assert(context != NULL);
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jcontext_index = context->index;
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jaddress = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
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assert(jaddress != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jaddress, 0, sizeof(struct evmc_address),
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(jbyte*)address);
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jkey = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_bytes32));
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assert(jkey != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jkey, 0, sizeof(struct evmc_bytes32), (jbyte*)key);
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// call java method
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jobject jresult = (*jenv)->CallStaticObjectMethod(jenv, host_class, method, jcontext_index,
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jaddress, jkey);
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assert(jresult != NULL);
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evmc_bytes32* result_ptr =
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(struct evmc_bytes32*)(*jenv)->GetDirectBufferAddress(jenv, jresult);
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assert(result_ptr != NULL);
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result = *result_ptr;
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}
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return result;
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}
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static enum evmc_storage_status set_storage_fn(struct evmc_host_context* context,
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const evmc_address* address,
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const evmc_bytes32* key,
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const evmc_bytes32* value)
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{
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enum evmc_storage_status result;
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const char java_method_name[] = "set_storage";
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const char java_method_signature[] = "(I[B[B[B)I";
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JNIEnv* jenv = attach();
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if (jenv != NULL)
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{
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jclass host_class;
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jmethodID method;
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jint jcontext_index;
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jbyteArray jaddress;
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jbyteArray jkey;
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jbyteArray jvalue;
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// get java class
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host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
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assert(host_class != NULL);
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// get java method
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method =
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(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
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assert(method != NULL);
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// set java method params
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assert(context != NULL);
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jcontext_index = context->index;
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jaddress = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
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assert(jaddress != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jaddress, 0, sizeof(struct evmc_address),
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(jbyte*)address);
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jkey = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_bytes32));
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assert(jkey != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jkey, 0, sizeof(struct evmc_bytes32), (jbyte*)key);
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jvalue = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_bytes32));
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assert(jvalue != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jvalue, 0, sizeof(struct evmc_bytes32), (jbyte*)value);
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// call java method
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jint jresult = (*jenv)->CallStaticIntMethod(jenv, host_class, method, jcontext_index,
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jaddress, jkey, jvalue);
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result = (enum evmc_storage_status)jresult;
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}
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return result;
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}
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static evmc_uint256be get_balance_fn(struct evmc_host_context* context, const evmc_address* address)
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{
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evmc_uint256be result;
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char java_method_name[] = "get_balance";
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char java_method_signature[] = "(I[B)Ljava/nio/ByteBuffer;";
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JNIEnv* jenv = attach();
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if (jenv != NULL)
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{
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jclass host_class;
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jmethodID method;
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jint jcontext_index;
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jbyteArray jaddress;
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// get java class
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host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
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assert(host_class != NULL);
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// get java method
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method =
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(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
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assert(method != NULL);
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// set java method params
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assert(context != NULL);
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jcontext_index = context->index;
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jaddress = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
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assert(jaddress != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jaddress, 0, sizeof(struct evmc_address),
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(jbyte*)address);
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// call java method
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jobject jresult =
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(*jenv)->CallStaticObjectMethod(jenv, host_class, method, jcontext_index, jaddress);
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assert(jresult != NULL);
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evmc_uint256be* result_ptr =
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(evmc_uint256be*)(*jenv)->GetDirectBufferAddress(jenv, jresult);
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assert(result_ptr != NULL);
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result = *result_ptr;
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(*jenv)->ReleaseByteArrayElements(jenv, jaddress, (jbyte*)address, 0);
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}
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return result;
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}
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static size_t get_code_size_fn(struct evmc_host_context* context, const evmc_address* address)
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{
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size_t result = 0;
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char java_method_name[] = "get_code_size";
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char java_method_signature[] = "(I[B)I";
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JNIEnv* jenv = attach();
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if (jenv != NULL)
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{
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jclass host_class;
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jmethodID method;
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jint jcontext_index;
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jbyteArray jaddress;
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// get java class
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host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
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assert(host_class != NULL);
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// get java method
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method =
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(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
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assert(method != NULL);
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// set java method params
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assert(context != NULL);
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jcontext_index = context->index;
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jaddress = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
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assert(jaddress != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jaddress, 0, sizeof(struct evmc_address),
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(jbyte*)address);
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// call java method
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jint jresult =
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(*jenv)->CallStaticIntMethod(jenv, host_class, method, jcontext_index, jaddress);
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result = jresult;
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}
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return result;
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}
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static evmc_bytes32 get_code_hash_fn(struct evmc_host_context* context, const evmc_address* address)
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{
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evmc_bytes32 result;
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char java_method_name[] = "get_code_hash";
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char java_method_signature[] = "(I[B)Ljava/nio/ByteBuffer;";
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JNIEnv* jenv = attach();
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if (jenv != NULL)
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{
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jclass host_class;
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jmethodID method;
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jint jcontext_index;
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jbyteArray jaddress;
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// get java class
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host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
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assert(host_class != NULL);
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// get java method
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method =
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(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
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assert(method != NULL);
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// set java method params
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assert(context != NULL);
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jcontext_index = context->index;
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jaddress = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
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assert(jaddress != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jaddress, 0, sizeof(struct evmc_address),
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(jbyte*)address);
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// call java method
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jobject jresult =
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(*jenv)->CallStaticObjectMethod(jenv, host_class, method, jcontext_index, jaddress);
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assert(jresult != NULL);
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evmc_bytes32* result_ptr =
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(struct evmc_bytes32*)(*jenv)->GetDirectBufferAddress(jenv, jresult);
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assert(result_ptr != NULL);
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result = *result_ptr;
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(*jenv)->ReleaseByteArrayElements(jenv, jaddress, (jbyte*)address, 0);
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}
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return result;
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}
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static size_t copy_code_fn(struct evmc_host_context* context,
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const evmc_address* address,
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size_t code_offset,
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uint8_t* buffer_data,
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size_t buffer_size)
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{
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size_t result;
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const char java_method_name[] = "copy_code";
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const char java_method_signature[] = "(I[BI)Ljava/nio/ByteBuffer;";
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JNIEnv* jenv = attach();
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if (jenv != NULL)
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{
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jclass host_class;
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jmethodID method;
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jint jcontext_index;
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jbyteArray jaddress;
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jint jcode_offset;
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// get java class
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host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
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assert(host_class != NULL);
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// get java method
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method =
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(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
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assert(method != NULL);
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// set java method params
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assert(context != NULL);
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jcontext_index = context->index;
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jaddress = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
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assert(jaddress != NULL);
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(*jenv)->SetByteArrayRegion(jenv, jaddress, 0, sizeof(struct evmc_address),
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(jbyte*)address);
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jcode_offset = code_offset;
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// call java method
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jobject jresult = (*jenv)->CallStaticObjectMethod(jenv, host_class, method, jcontext_index,
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jaddress, jcode_offset);
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assert(jresult != NULL);
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// copy jresult back to buffer_data
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buffer_data = (uint8_t*)(*jenv)->GetDirectBufferAddress(jenv, jresult);
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assert(buffer_data != NULL);
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result = get_code_size_fn(context, address) - code_offset;
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(*jenv)->ReleaseByteArrayElements(jenv, jaddress, (jbyte*)address, 0);
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}
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return result;
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}
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static void selfdestruct_fn(struct evmc_host_context* context,
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const evmc_address* address,
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const evmc_address* beneficiary)
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{
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const char java_method_name[] = "selfdestruct";
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const char java_method_signature[] = "(I[B[B)V";
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JNIEnv* jenv = attach();
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if (jenv != NULL)
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{
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jclass host_class;
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jmethodID method;
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jint jcontext_index;
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jbyteArray jaddress;
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jbyteArray jbeneficiary;
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// get java class
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host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
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assert(host_class != NULL);
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// get java method
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method =
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|
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(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
|
||
|
|
assert(method != NULL);
|
||
|
|
|
||
|
|
// set java method params
|
||
|
|
assert(context != NULL);
|
||
|
|
jcontext_index = context->index;
|
||
|
|
|
||
|
|
jaddress = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
|
||
|
|
assert(jaddress != NULL);
|
||
|
|
(*jenv)->SetByteArrayRegion(jenv, jaddress, 0, sizeof(struct evmc_address),
|
||
|
|
(jbyte*)address);
|
||
|
|
|
||
|
|
jbeneficiary = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
|
||
|
|
assert(jbeneficiary != NULL);
|
||
|
|
(*jenv)->SetByteArrayRegion(jenv, jbeneficiary, 0, sizeof(struct evmc_address),
|
||
|
|
(jbyte*)beneficiary);
|
||
|
|
|
||
|
|
// call java method
|
||
|
|
(*jenv)->CallStaticIntMethod(jenv, host_class, method, jcontext_index, jaddress,
|
||
|
|
jbeneficiary);
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct evmc_result call_fn(struct evmc_host_context* context, const struct evmc_message* msg)
|
||
|
|
{
|
||
|
|
struct evmc_result result;
|
||
|
|
const char java_method_name[] = "call";
|
||
|
|
const char java_method_signature[] = "(ILjava/nio/ByteBuffer;)Ljava/nio/ByteBuffer;";
|
||
|
|
JNIEnv* jenv = attach();
|
||
|
|
if (jenv != NULL)
|
||
|
|
{
|
||
|
|
jclass host_class;
|
||
|
|
jmethodID method;
|
||
|
|
jint jcontext_index;
|
||
|
|
jobject jmsg;
|
||
|
|
|
||
|
|
// get java class
|
||
|
|
host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
|
||
|
|
assert(host_class != NULL);
|
||
|
|
|
||
|
|
// get java method
|
||
|
|
method =
|
||
|
|
(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
|
||
|
|
assert(method != NULL);
|
||
|
|
|
||
|
|
// set java method params
|
||
|
|
assert(context != NULL);
|
||
|
|
jcontext_index = context->index;
|
||
|
|
|
||
|
|
jmsg = (*jenv)->NewDirectByteBuffer(jenv, (void*)msg, sizeof(struct evmc_message));
|
||
|
|
assert(jmsg != NULL);
|
||
|
|
|
||
|
|
// call java method
|
||
|
|
jobject jresult =
|
||
|
|
(*jenv)->CallStaticObjectMethod(jenv, host_class, method, jcontext_index, jmsg);
|
||
|
|
assert(jresult != NULL);
|
||
|
|
|
||
|
|
struct evmc_result* result_ptr =
|
||
|
|
(struct evmc_result*)(*jenv)->GetDirectBufferAddress(jenv, jresult);
|
||
|
|
assert(result_ptr != NULL);
|
||
|
|
result = *result_ptr;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct evmc_tx_context get_tx_context_fn(struct evmc_host_context* context)
|
||
|
|
{
|
||
|
|
struct evmc_tx_context result;
|
||
|
|
const char java_method_name[] = "get_tx_context";
|
||
|
|
const char java_method_signature[] = "(I)Ljava/nio/ByteBuffer;";
|
||
|
|
JNIEnv* jenv = attach();
|
||
|
|
if (jenv != NULL)
|
||
|
|
{
|
||
|
|
jclass host_class;
|
||
|
|
jmethodID method;
|
||
|
|
jint jcontext_index;
|
||
|
|
// get java class
|
||
|
|
host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
|
||
|
|
assert(host_class != NULL);
|
||
|
|
|
||
|
|
// get java method
|
||
|
|
method =
|
||
|
|
(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
|
||
|
|
assert(method != NULL);
|
||
|
|
|
||
|
|
// set java method params
|
||
|
|
assert(context != NULL);
|
||
|
|
jcontext_index = context->index;
|
||
|
|
|
||
|
|
// call java method
|
||
|
|
jobject jresult = (*jenv)->CallStaticObjectMethod(jenv, host_class, method, jcontext_index);
|
||
|
|
assert(jresult != NULL);
|
||
|
|
|
||
|
|
struct evmc_tx_context* result_ptr =
|
||
|
|
(struct evmc_tx_context*)(*jenv)->GetDirectBufferAddress(jenv, jresult);
|
||
|
|
assert(result_ptr != NULL);
|
||
|
|
result = *result_ptr;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static evmc_bytes32 get_block_hash_fn(struct evmc_host_context* context, int64_t number)
|
||
|
|
{
|
||
|
|
evmc_bytes32 result;
|
||
|
|
char java_method_name[] = "get_code_hash";
|
||
|
|
char java_method_signature[] = "(IJ)Ljava/nio/ByteBuffer;";
|
||
|
|
JNIEnv* jenv = attach();
|
||
|
|
if (jenv != NULL)
|
||
|
|
{
|
||
|
|
jclass host_class;
|
||
|
|
jmethodID method;
|
||
|
|
jint jcontext_index;
|
||
|
|
jlong jnumber;
|
||
|
|
|
||
|
|
// get java class
|
||
|
|
host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
|
||
|
|
assert(host_class != NULL);
|
||
|
|
|
||
|
|
// get java method
|
||
|
|
method =
|
||
|
|
(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
|
||
|
|
assert(method != NULL);
|
||
|
|
|
||
|
|
// set java method params
|
||
|
|
|
||
|
|
assert(context != NULL);
|
||
|
|
jcontext_index = context->index;
|
||
|
|
|
||
|
|
jnumber = (jlong)number;
|
||
|
|
|
||
|
|
// call java method
|
||
|
|
jobject jresult =
|
||
|
|
(*jenv)->CallStaticObjectMethod(jenv, host_class, method, jcontext_index, jnumber);
|
||
|
|
assert(jresult != NULL);
|
||
|
|
|
||
|
|
evmc_bytes32* result_ptr =
|
||
|
|
(struct evmc_bytes32*)(*jenv)->GetDirectBufferAddress(jenv, jresult);
|
||
|
|
assert(result_ptr != NULL);
|
||
|
|
result = *result_ptr;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void emit_log_fn(struct evmc_host_context* context,
|
||
|
|
const evmc_address* address,
|
||
|
|
const uint8_t* data,
|
||
|
|
size_t data_size,
|
||
|
|
const evmc_bytes32 topics[],
|
||
|
|
size_t topics_count)
|
||
|
|
{
|
||
|
|
const char java_method_name[] = "emit_log";
|
||
|
|
const char java_method_signature[] = "(I[B[BI[[BI)V";
|
||
|
|
JNIEnv* jenv = attach();
|
||
|
|
if (jenv != NULL)
|
||
|
|
{
|
||
|
|
jclass host_class;
|
||
|
|
jmethodID method;
|
||
|
|
jint jcontext_index;
|
||
|
|
jbyteArray jaddress;
|
||
|
|
jbyteArray jdata;
|
||
|
|
jobjectArray jtopics;
|
||
|
|
|
||
|
|
// get java class
|
||
|
|
host_class = (*jenv)->FindClass(jenv, "org/ethereum/evmc/Host");
|
||
|
|
assert(host_class != NULL);
|
||
|
|
|
||
|
|
// get java method
|
||
|
|
method =
|
||
|
|
(*jenv)->GetStaticMethodID(jenv, host_class, java_method_name, java_method_signature);
|
||
|
|
assert(method != NULL);
|
||
|
|
|
||
|
|
// set java method params
|
||
|
|
assert(context != NULL);
|
||
|
|
jcontext_index = context->index;
|
||
|
|
|
||
|
|
jaddress = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_address));
|
||
|
|
assert(jaddress != NULL);
|
||
|
|
(*jenv)->SetByteArrayRegion(jenv, jaddress, 0, sizeof(struct evmc_address),
|
||
|
|
(jbyte*)address);
|
||
|
|
|
||
|
|
jdata = (*jenv)->NewByteArray(jenv, data_size);
|
||
|
|
assert(jdata != NULL);
|
||
|
|
(*jenv)->SetByteArrayRegion(jenv, jdata, 0, data_size, (jbyte*)data);
|
||
|
|
|
||
|
|
jclass byte_type = (*jenv)->FindClass(jenv, "[B");
|
||
|
|
jtopics = (*jenv)->NewObjectArray(jenv, (jsize)topics_count, byte_type, NULL);
|
||
|
|
assert(jtopics != NULL);
|
||
|
|
for (int i = 0; i < topics_count; i++)
|
||
|
|
{
|
||
|
|
jbyteArray jtopic = (*jenv)->NewByteArray(jenv, sizeof(struct evmc_bytes32));
|
||
|
|
assert(jtopic != NULL);
|
||
|
|
(*jenv)->SetByteArrayRegion(jenv, jtopic, 0, sizeof(struct evmc_bytes32),
|
||
|
|
(jbyte*)topics[i].bytes);
|
||
|
|
(*jenv)->SetObjectArrayElement(jenv, jtopics, i, jtopic);
|
||
|
|
(*jenv)->DeleteLocalRef(jenv, jtopic);
|
||
|
|
}
|
||
|
|
|
||
|
|
// call java method
|
||
|
|
(*jenv)->CallStaticIntMethod(jenv, host_class, method, jcontext_index, jaddress, jdata,
|
||
|
|
data_size, jtopics, topics_count);
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
const struct evmc_host_interface* get_host_interface()
|
||
|
|
{
|
||
|
|
static const struct evmc_host_interface host = {
|
||
|
|
account_exists_fn, get_storage_fn, set_storage_fn, get_balance_fn,
|
||
|
|
get_code_size_fn, get_code_hash_fn, copy_code_fn, selfdestruct_fn,
|
||
|
|
call_fn, get_tx_context_fn, get_block_hash_fn, emit_log_fn,
|
||
|
|
};
|
||
|
|
return &host;
|
||
|
|
}
|