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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "native_client/src/trusted/plugin/nacl_subprocess.h"
#include <stdarg.h>
#include "native_client/src/shared/srpc/nacl_srpc.h"
#include "native_client/src/trusted/plugin/plugin_error.h"
#include "native_client/src/trusted/plugin/srpc_params.h"
namespace plugin {
nacl::string NaClSubprocess::detailed_description() const {
nacl::stringstream ss;
ss << description()
<< "={ this=" << static_cast<const void*>(this)
<< ", srpc_client=" << static_cast<void*>(srpc_client_.get())
<< ", service_runtime=" << static_cast<void*>(service_runtime_.get())
<< " }";
return ss.str();
}
// Shutdown the socket connection and service runtime, in that order.
void NaClSubprocess::Shutdown() {
srpc_client_.reset(NULL);
if (service_runtime_.get() != NULL) {
service_runtime_->Shutdown();
service_runtime_.reset(NULL);
}
}
NaClSubprocess::~NaClSubprocess() {
Shutdown();
}
bool NaClSubprocess::StartSrpcServices() {
srpc_client_.reset(service_runtime_->SetupAppChannel());
return NULL != srpc_client_.get();
}
bool NaClSubprocess::InvokeSrpcMethod(const nacl::string& method_name,
const nacl::string& input_signature,
SrpcParams* params,
...) {
va_list vl;
va_start(vl, params);
bool result = VInvokeSrpcMethod(method_name, input_signature, params, vl);
va_end(vl);
return result;
}
bool NaClSubprocess::VInvokeSrpcMethod(const nacl::string& method_name,
const nacl::string& input_signature,
SrpcParams* params,
va_list vl) {
if (NULL == srpc_client_.get()) {
PLUGIN_PRINTF(("VInvokeSrpcMethod (no srpc_client_)\n"));
return false;
}
if (!srpc_client_->HasMethod(method_name)) {
PLUGIN_PRINTF(("VInvokeSrpcMethod (no %s method found)\n",
method_name.c_str()));
return false;
}
if (!srpc_client_->InitParams(method_name, params)) {
PLUGIN_PRINTF(("VInvokeSrpcMethod (InitParams failed)\n"));
return false;
}
// Marshall inputs.
for (size_t i = 0; i < input_signature.length(); ++i) {
char c = input_signature[i];
// Only handle the limited number of SRPC types used for PNaCl.
// Add more as needed.
switch (c) {
default:
PLUGIN_PRINTF(("PnaclSrpcLib::InvokeSrpcMethod unhandled type: %c\n",
c));
return false;
case NACL_SRPC_ARG_TYPE_BOOL: {
int input = va_arg(vl, int);
params->ins()[i]->u.bval = input;
break;
}
case NACL_SRPC_ARG_TYPE_DOUBLE: {
double input = va_arg(vl, double);
params->ins()[i]->u.dval = input;
break;
}
case NACL_SRPC_ARG_TYPE_CHAR_ARRAY: {
// SrpcParam's destructor *should* free the allocated array
const char* orig_arr = va_arg(vl, const char*);
size_t len = va_arg(vl, size_t);
char* input = (char *)malloc(len);
if (!input) {
PLUGIN_PRINTF(("VInvokeSrpcMethod (allocation failure)\n"));
return false;
}
memcpy(input, orig_arr, len);
params->ins()[i]->arrays.carr = input;
params->ins()[i]->u.count = static_cast<nacl_abi_size_t>(len);
break;
}
case NACL_SRPC_ARG_TYPE_HANDLE: {
NaClSrpcImcDescType input = va_arg(vl, NaClSrpcImcDescType);
params->ins()[i]->u.hval = input;
break;
}
case NACL_SRPC_ARG_TYPE_INT: {
int32_t input = va_arg(vl, int32_t);
params->ins()[i]->u.ival = input;
break;
}
case NACL_SRPC_ARG_TYPE_LONG: {
int64_t input = va_arg(vl, int64_t);
params->ins()[i]->u.lval = input;
break;
}
case NACL_SRPC_ARG_TYPE_STRING: {
// SrpcParam's destructor *should* free the dup'ed string.
const char* orig_str = va_arg(vl, const char*);
char* input = strdup(orig_str);
if (!input) {
PLUGIN_PRINTF(("VInvokeSrpcMethod (allocation failure)\n"));
return false;
}
params->ins()[i]->arrays.str = input;
break;
}
}
}
return srpc_client_->Invoke(method_name, params);
}
} // namespace plugin
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