src/ppapi/nacl_irt/irt_ppapi.cc

   1 // Copyright 2014 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 <unistd.h>
   6
   7 #include "build/build_config.h"
   8 #include "native_client/src/public/irt_core.h"
   9 #include "native_client/src/trusted/service_runtime/include/sys/unistd.h"
  10 #include "native_client/src/untrusted/irt/irt.h"
  11 #include "native_client/src/untrusted/irt/irt_private.h"
  12 #include "ppapi/nacl_irt/irt_manifest.h"
  13 #include "ppapi/nacl_irt/irt_ppapi.h"
  14 #include "ppapi/nacl_irt/plugin_main.h"
  15 #include "ppapi/nacl_irt/public/irt_ppapi.h"
  16 #include "ppapi/native_client/src/untrusted/pnacl_irt_shim/irt_shim_ppapi.h"
  17
  18 static struct PP_StartFunctions g_pp_functions;
  19
  20 int irt_ppapi_start(const struct PP_StartFunctions* funcs) {
  21 #if !defined(OS_NACL_NONSFI)
  22   // Disable NaCl's open_resource() interface on this thread.
  23   // TODO(hidehiko): This flag is no longer used because, even in SFI mode,
  24   // we switched from SRPC to Chrome IPC for open_resource() implementation.
  25   // Remove this flag.
  26   g_is_main_thread = 1;
  27 #endif
  28
  29   g_pp_functions = *funcs;
  30   return PpapiPluginMain();
  31 }
  32
  33 int32_t PPP_InitializeModule(PP_Module module_id,
  34                              PPB_GetInterface get_browser_interface) {
  35   return g_pp_functions.PPP_InitializeModule(module_id, get_browser_interface);
  36 }
  37
  38 void PPP_ShutdownModule(void) {
  39   g_pp_functions.PPP_ShutdownModule();
  40 }
  41
  42 const void* PPP_GetInterface(const char* interface_name) {
  43   return g_pp_functions.PPP_GetInterface(interface_name);
  44 }
  45
  46 static const struct nacl_irt_ppapihook nacl_irt_ppapihook = {
  47   irt_ppapi_start,
  48   PpapiPluginRegisterThreadCreator,
  49 };
  50
  51 #if defined(OS_NACL_SFI)
  52 static int ppapihook_pnacl_private_filter(void) {
  53   int pnacl_mode = sysconf(NACL_ABI__SC_NACL_PNACL_MODE);
  54   if (pnacl_mode == -1)
  55     return 0;
  56   return pnacl_mode;
  57 }
  58 #endif
  59
  60 static const nacl_irt_resource_open kIrtResourceOpen = {
  61   ppapi::IrtOpenResource,
  62 };
  63
  64 #if defined(OS_NACL_SFI)
  65 static int not_pnacl_filter(void) {
  66   int pnacl_mode = sysconf(NACL_ABI__SC_NACL_PNACL_MODE);
  67   if (pnacl_mode == -1)
  68     return 0;
  69   return !pnacl_mode;
  70 }
  71 #endif
  72
  73 static const struct nacl_irt_interface irt_interfaces[] = {
  74   { NACL_IRT_PPAPIHOOK_v0_1, &nacl_irt_ppapihook, sizeof(nacl_irt_ppapihook),
  75     NULL },
  76 #if defined(OS_NACL_SFI)
  77   { NACL_IRT_PPAPIHOOK_PNACL_PRIVATE_v0_1,
  78     &nacl_irt_ppapihook_pnacl_private, sizeof(nacl_irt_ppapihook_pnacl_private),
  79     ppapihook_pnacl_private_filter },
  80 #endif
  81   { NACL_IRT_RESOURCE_OPEN_v0_1, &kIrtResourceOpen,
  82     sizeof(kIrtResourceOpen),
  83 #if defined(OS_NACL_SFI)
  84     not_pnacl_filter,
  85 #else
  86     // If we change PNaCl to use Non-SFI Mode on the open web,
  87     // we should add a filter here.
  88     NULL,
  89 #endif
  90   },
  91 };
  92
  93 size_t chrome_irt_query(const char* interface_ident,
  94                         void* table, size_t tablesize) {
  95   size_t result = nacl_irt_query_list(interface_ident,
  96                                       table,
  97                                       tablesize,
  98                                       irt_interfaces,
  99                                       sizeof(irt_interfaces));
 100   if (result != 0)
 101     return result;
 102   return nacl_irt_query_core(interface_ident, table, tablesize);
 103 }