1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ppapi/native_client/src/trusted/plugin/nacl_subprocess.h"
6
7 #include <stdarg.h>
8
9 #include "native_client/src/shared/srpc/nacl_srpc.h"
10 #include "ppapi/native_client/src/trusted/plugin/plugin_error.h"
11 #include "ppapi/native_client/src/trusted/plugin/srpc_params.h"
12
13 namespace plugin {
14
detailed_description() const15 nacl::string NaClSubprocess::detailed_description() const {
16 nacl::stringstream ss;
17 ss << description()
18 << "={ this=" << static_cast<const void*>(this)
19 << ", srpc_client=" << static_cast<void*>(srpc_client_.get())
20 << ", service_runtime=" << static_cast<void*>(service_runtime_.get())
21 << " }";
22 return ss.str();
23 }
24
25 // Shutdown the socket connection and service runtime, in that order.
Shutdown()26 void NaClSubprocess::Shutdown() {
27 srpc_client_.reset(NULL);
28 if (service_runtime_.get() != NULL) {
29 service_runtime_->Shutdown();
30 service_runtime_.reset(NULL);
31 }
32 }
33
~NaClSubprocess()34 NaClSubprocess::~NaClSubprocess() {
35 Shutdown();
36 }
37
StartSrpcServices()38 bool NaClSubprocess::StartSrpcServices() {
39 srpc_client_.reset(service_runtime_->SetupAppChannel());
40 return NULL != srpc_client_.get();
41 }
42
InvokeSrpcMethod(const nacl::string & method_name,const nacl::string & input_signature,SrpcParams * params,...)43 bool NaClSubprocess::InvokeSrpcMethod(const nacl::string& method_name,
44 const nacl::string& input_signature,
45 SrpcParams* params,
46 ...) {
47 va_list vl;
48 va_start(vl, params);
49 bool result = VInvokeSrpcMethod(method_name, input_signature, params, vl);
50 va_end(vl);
51 return result;
52 }
53
VInvokeSrpcMethod(const nacl::string & method_name,const nacl::string & input_signature,SrpcParams * params,va_list vl)54 bool NaClSubprocess::VInvokeSrpcMethod(const nacl::string& method_name,
55 const nacl::string& input_signature,
56 SrpcParams* params,
57 va_list vl) {
58 if (NULL == srpc_client_.get()) {
59 PLUGIN_PRINTF(("VInvokeSrpcMethod (no srpc_client_)\n"));
60 return false;
61 }
62 if (!srpc_client_->HasMethod(method_name)) {
63 PLUGIN_PRINTF(("VInvokeSrpcMethod (no %s method found)\n",
64 method_name.c_str()));
65 return false;
66 }
67 if (!srpc_client_->InitParams(method_name, params)) {
68 PLUGIN_PRINTF(("VInvokeSrpcMethod (InitParams failed)\n"));
69 return false;
70 }
71 // Marshall inputs.
72 for (size_t i = 0; i < input_signature.length(); ++i) {
73 char c = input_signature[i];
74 // Only handle the limited number of SRPC types used for PNaCl.
75 // Add more as needed.
76 switch (c) {
77 default:
78 PLUGIN_PRINTF(("PnaclSrpcLib::InvokeSrpcMethod unhandled type: %c\n",
79 c));
80 return false;
81 case NACL_SRPC_ARG_TYPE_BOOL: {
82 int input = va_arg(vl, int);
83 params->ins()[i]->u.bval = input;
84 break;
85 }
86 case NACL_SRPC_ARG_TYPE_DOUBLE: {
87 double input = va_arg(vl, double);
88 params->ins()[i]->u.dval = input;
89 break;
90 }
91 case NACL_SRPC_ARG_TYPE_CHAR_ARRAY: {
92 // SrpcParam's destructor *should* free the allocated array
93 const char* orig_arr = va_arg(vl, const char*);
94 size_t len = va_arg(vl, size_t);
95 char* input = (char *)malloc(len);
96 if (!input) {
97 PLUGIN_PRINTF(("VInvokeSrpcMethod (allocation failure)\n"));
98 return false;
99 }
100 memcpy(input, orig_arr, len);
101 params->ins()[i]->arrays.carr = input;
102 params->ins()[i]->u.count = static_cast<nacl_abi_size_t>(len);
103 break;
104 }
105 case NACL_SRPC_ARG_TYPE_HANDLE: {
106 NaClSrpcImcDescType input = va_arg(vl, NaClSrpcImcDescType);
107 params->ins()[i]->u.hval = input;
108 break;
109 }
110 case NACL_SRPC_ARG_TYPE_INT: {
111 int32_t input = va_arg(vl, int32_t);
112 params->ins()[i]->u.ival = input;
113 break;
114 }
115 case NACL_SRPC_ARG_TYPE_LONG: {
116 int64_t input = va_arg(vl, int64_t);
117 params->ins()[i]->u.lval = input;
118 break;
119 }
120 case NACL_SRPC_ARG_TYPE_STRING: {
121 // SrpcParam's destructor *should* free the dup'ed string.
122 const char* orig_str = va_arg(vl, const char*);
123 char* input = strdup(orig_str);
124 if (!input) {
125 PLUGIN_PRINTF(("VInvokeSrpcMethod (allocation failure)\n"));
126 return false;
127 }
128 params->ins()[i]->arrays.str = input;
129 break;
130 }
131 }
132 }
133 return srpc_client_->Invoke(method_name, params);
134 }
135
136 } // namespace plugin
137