355 lines
14 KiB
C++
355 lines
14 KiB
C++
// Copyright 2012 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef COMPONENTS_NACL_RENDERER_PPB_NACL_PRIVATE_H_
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#define COMPONENTS_NACL_RENDERER_PPB_NACL_PRIVATE_H_
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#include <memory>
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#include "base/process/process_handle.h"
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#include "ipc/ipc_sync_channel.h"
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#include "ppapi/c/pp_bool.h"
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#include "ppapi/c/pp_completion_callback.h"
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#include "ppapi/c/pp_instance.h"
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#include "ppapi/c/pp_macros.h"
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#include "ppapi/c/pp_stdint.h"
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#include "ppapi/c/pp_var.h"
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#include "ppapi/c/private/pp_file_handle.h"
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#include "ppapi/c/private/ppb_instance_private.h"
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#include "ppapi/c/private/ppp_pexe_stream_handler.h"
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// This file defines an interface that is used by the code in
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// components/nacl/renderer/plugin/. It is defined as a PPAPI PPB_*
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// interface for historical reasons: The code in plugin/ used to live
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// outside the Chromium repo.
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//
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// In the future, we may integrate the code in nacl/renderer/plugin/ more
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// closely with nacl/renderer/. This could include having plugin/ call the
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// functions below directly, rather than providing these functions via the
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// PPB_NaCl_Private interface struct.
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/**
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* @addtogroup Enums
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* @{
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*/
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/** NaCl-specific errors that should be reported to the user.
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* These error codes are reported via UMA so, if you edit them:
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* 1) make sure you understand UMA first.
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* 2) update src/tools/metrics/histograms/histograms.xml
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* Values are explicitly specified to make sure they don't shift around when
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* edited, and also to make reading about:histograms easier.
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*/
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typedef enum {
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PP_NACL_ERROR_LOAD_SUCCESS = 0,
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PP_NACL_ERROR_LOAD_ABORTED = 1,
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PP_NACL_ERROR_UNKNOWN = 2,
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PP_NACL_ERROR_MANIFEST_RESOLVE_URL = 3,
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PP_NACL_ERROR_MANIFEST_LOAD_URL = 4,
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PP_NACL_ERROR_MANIFEST_STAT = 5,
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PP_NACL_ERROR_MANIFEST_TOO_LARGE = 6,
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PP_NACL_ERROR_MANIFEST_OPEN = 7,
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PP_NACL_ERROR_MANIFEST_MEMORY_ALLOC = 8,
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PP_NACL_ERROR_MANIFEST_READ = 9,
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PP_NACL_ERROR_MANIFEST_PARSING = 10,
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PP_NACL_ERROR_MANIFEST_SCHEMA_VALIDATE = 11,
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PP_NACL_ERROR_MANIFEST_GET_NEXE_URL = 12,
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PP_NACL_ERROR_NEXE_LOAD_URL = 13,
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PP_NACL_ERROR_NEXE_ORIGIN_PROTOCOL = 14,
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PP_NACL_ERROR_NEXE_FH_DUP = 15,
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PP_NACL_ERROR_NEXE_STAT = 16,
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PP_NACL_ERROR_ELF_CHECK_IO = 17,
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PP_NACL_ERROR_ELF_CHECK_FAIL = 18,
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PP_NACL_ERROR_SEL_LDR_INIT = 19,
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PP_NACL_ERROR_SEL_LDR_CREATE_LAUNCHER = 20,
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PP_NACL_ERROR_SEL_LDR_FD = 21,
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PP_NACL_ERROR_SEL_LDR_LAUNCH = 22,
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/* Deprecated, safe to reuse the value because it's never logged in UMA.
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*/
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PP_NACL_ERROR_SEL_LDR_SEND_NEXE = 24,
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PP_NACL_ERROR_SEL_LDR_HANDLE_PASSING = 25,
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PP_NACL_ERROR_SEL_LDR_START_MODULE = 26,
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PP_NACL_ERROR_SEL_LDR_START_STATUS = 27,
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PP_NACL_ERROR_SRPC_CONNECTION_FAIL = 28,
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PP_NACL_ERROR_START_PROXY_CHECK_PPP = 29,
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PP_NACL_ERROR_START_PROXY_ALLOC = 30,
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PP_NACL_ERROR_START_PROXY_MODULE = 31,
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PP_NACL_ERROR_START_PROXY_INSTANCE = 32,
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PP_NACL_ERROR_SEL_LDR_COMMUNICATION_CMD_CHANNEL = 33,
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PP_NACL_ERROR_SEL_LDR_COMMUNICATION_REV_SETUP = 34,
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PP_NACL_ERROR_SEL_LDR_COMMUNICATION_WRAPPER = 35,
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PP_NACL_ERROR_SEL_LDR_COMMUNICATION_REV_SERVICE = 36,
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PP_NACL_ERROR_START_PROXY_CRASH = 37,
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PP_NACL_ERROR_MANIFEST_PROGRAM_MISSING_ARCH = 38,
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PP_NACL_ERROR_PNACL_CACHE_OPEN_INPROGRESS = 39,
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PP_NACL_ERROR_PNACL_CACHE_OPEN_NOACCESS = 40,
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PP_NACL_ERROR_PNACL_CACHE_OPEN_NOQUOTA = 41,
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PP_NACL_ERROR_PNACL_CACHE_OPEN_NOSPACE = 42,
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PP_NACL_ERROR_PNACL_CACHE_OPEN_OTHER = 43,
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PP_NACL_ERROR_PNACL_CACHE_DIRECTORY_CREATE = 44,
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PP_NACL_ERROR_PNACL_CACHE_FILEOPEN_NOACCESS = 45,
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PP_NACL_ERROR_PNACL_CACHE_FILEOPEN_NOQUOTA = 46,
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PP_NACL_ERROR_PNACL_CACHE_FILEOPEN_NOSPACE = 47,
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PP_NACL_ERROR_PNACL_CACHE_FILEOPEN_NOTAFILE = 48,
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PP_NACL_ERROR_PNACL_CACHE_FILEOPEN_OTHER = 49,
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PP_NACL_ERROR_PNACL_CACHE_FETCH_NOACCESS = 50,
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PP_NACL_ERROR_PNACL_CACHE_FETCH_NOTFOUND = 51,
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PP_NACL_ERROR_PNACL_CACHE_FETCH_OTHER = 52,
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PP_NACL_ERROR_PNACL_CACHE_FINALIZE_COPY_NOQUOTA = 53,
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PP_NACL_ERROR_PNACL_CACHE_FINALIZE_COPY_NOSPACE = 54,
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PP_NACL_ERROR_PNACL_CACHE_FINALIZE_COPY_OTHER = 55,
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PP_NACL_ERROR_PNACL_CACHE_FINALIZE_RENAME_NOACCESS = 56,
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PP_NACL_ERROR_PNACL_CACHE_FINALIZE_RENAME_OTHER = 57,
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PP_NACL_ERROR_PNACL_RESOURCE_FETCH = 58,
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PP_NACL_ERROR_PNACL_PEXE_FETCH_ABORTED = 59,
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PP_NACL_ERROR_PNACL_PEXE_FETCH_NOACCESS = 60,
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PP_NACL_ERROR_PNACL_PEXE_FETCH_OTHER = 61,
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PP_NACL_ERROR_PNACL_THREAD_CREATE = 62,
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PP_NACL_ERROR_PNACL_LLC_SETUP = 63,
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PP_NACL_ERROR_PNACL_LD_SETUP = 64,
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PP_NACL_ERROR_PNACL_LLC_INTERNAL = 65,
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PP_NACL_ERROR_PNACL_LD_INTERNAL = 66,
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PP_NACL_ERROR_PNACL_CREATE_TEMP = 67,
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/* This entry is no longer used, but should not be removed, because UMA
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*/
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PP_NACL_ERROR_PNACL_NOT_ENABLED = 68,
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PP_NACL_ERROR_MANIFEST_NOACCESS_URL = 69,
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PP_NACL_ERROR_NEXE_NOACCESS_URL = 70,
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PP_NACL_ERROR_PNACL_CRASH_THROTTLED = 71,
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/* If you add a code, read the enum comment above on how to update
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*/
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PP_NACL_ERROR_MAX
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} PP_NaClError;
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/** Event types that NaCl may use when reporting load progress or errors. */
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typedef enum {
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PP_NACL_EVENT_LOADSTART,
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PP_NACL_EVENT_PROGRESS,
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PP_NACL_EVENT_ERROR,
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PP_NACL_EVENT_ABORT,
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PP_NACL_EVENT_LOAD,
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PP_NACL_EVENT_LOADEND,
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PP_NACL_EVENT_CRASH
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} PP_NaClEventType;
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typedef enum {
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PP_SCHEME_CHROME_EXTENSION,
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PP_SCHEME_DATA,
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PP_SCHEME_OTHER
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} PP_UrlSchemeType;
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typedef enum {
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/* The trusted plugin begins in this ready state. */
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PP_NACL_READY_STATE_UNSENT = 0,
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/* The manifest file has been requested, but not yet received. */
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PP_NACL_READY_STATE_OPENED = 1,
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/* The manifest file has been received and the nexe successfully requested. */
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PP_NACL_READY_STATE_LOADING = 3,
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/* The nexe has been loaded and the proxy started, so it is ready for
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*/
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PP_NACL_READY_STATE_DONE = 4
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} PP_NaClReadyState;
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/** Types of untrusted NaCl processes. Mirrors NaClAppProcessType from
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* components/nacl/common/nacl_types.h.
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*/
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typedef enum {
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PP_UNKNOWN_NACL_PROCESS_TYPE,
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PP_NATIVE_NACL_PROCESS_TYPE,
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PP_PNACL_PROCESS_TYPE,
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PP_PNACL_TRANSLATOR_PROCESS_TYPE,
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PP_NUM_NACL_PROCESS_TYPES
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} PP_NaClAppProcessType;
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/**
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* @}
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*/
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/**
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* @addtogroup Structs
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* @{
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*/
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struct PP_PNaClOptions {
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PP_Bool translate;
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PP_Bool is_debug;
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PP_Bool use_subzero;
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int32_t opt_level;
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};
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/**
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* @}
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*/
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/**
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* @addtogroup Typedefs
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* @{
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*/
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/* Callback invoked upon completion of PPP_ManifestService::OpenResource(). */
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typedef void (*PP_OpenResourceCompletionCallback)(void* user_data,
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PP_FileHandle file_handle);
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/**
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* @}
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*/
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/**
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* @addtogroup Structs
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* @{
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*/
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struct PP_NaClFileInfo {
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PP_FileHandle handle;
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/* See NaClFileToken comment in nacl_process_host.h */
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uint64_t token_lo;
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uint64_t token_hi;
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};
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/**
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* @}
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*/
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namespace nacl {
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// This is a set of interfaces used by the code in
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// components/nacl/renderer/plugin/, implemented by
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// components/nacl/renderer/.
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//
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// There is not really a good name for this set of interfaces because the
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// grouping exists only for historical reasons. It used to be a PPAPI
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// PPB_* interface (PPB_NaCl_Private) because the code in plugin/ used to
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// live outside the Chromium repo and used to be built as a separate
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// DSO/DLL. Since that's no longer the case, there is now no strong
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// distinction between renderer/ and renderer/plugin/.
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class PPBNaClPrivate {
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public:
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/* Launches NaCl's sel_ldr process. Returns PP_EXTERNAL_PLUGIN_OK on success.
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* Returns PP_EXTERNAL_PLUGIN_FAILED on failure.
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* The |nexe_file_info| is the file handle for the main nexe file, which
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* should be initially loaded.
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* LaunchSelLdr takes the ownership of the file handle.
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* |translator_channel| is filled out when launching PNaCl translator
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* processes.
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*/
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static void LaunchSelLdr(
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PP_Instance instance,
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PP_Bool main_service_runtime,
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const char* alleged_url,
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const struct PP_NaClFileInfo* nexe_file_info,
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PP_NaClAppProcessType process_type,
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std::unique_ptr<IPC::SyncChannel>* translator_channel,
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struct PP_CompletionCallback callback);
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/* Returns a read-only (but executable) file descriptor / file info for
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* a url for pnacl translator tools. Returns an invalid handle on failure.
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*/
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static void GetReadExecPnaclFd(const char* url,
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struct PP_NaClFileInfo* out_file_info);
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/* This creates a temporary file that will be deleted by the time
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* the last handle is closed (or earlier on POSIX systems), and
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* returns a posix handle to that temporary file.
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*/
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static PP_FileHandle CreateTemporaryFile(PP_Instance instance);
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/* Return the number of processors in the system as reported by the OS */
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static int32_t GetNumberOfProcessors();
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/* Report to the browser that translation of the pexe for |instance|
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* has finished, or aborted with an error. If |success| is true, the
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* browser may then store the translation in the cache. The renderer
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* must first have called StreamPexe for the same instance. (The browser is
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* not guaranteed to store the nexe even if |success| is true; if there is
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* an error on the browser side, or the file is too big for the cache, or
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* the browser is in incognito mode, no notification will be delivered to
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* the plugin.)
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*/
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static void ReportTranslationFinished(PP_Instance instance,
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PP_Bool success,
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int32_t opt_level,
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PP_Bool use_subzero,
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int64_t nexe_size,
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int64_t pexe_size,
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int64_t compile_time_us);
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/* Dispatch a progress event on the DOM element where the given instance is
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* embedded.
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*/
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static void DispatchEvent(PP_Instance instance,
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PP_NaClEventType event_type,
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const char* resource_url,
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PP_Bool length_is_computable,
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uint64_t loaded_bytes,
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uint64_t total_bytes);
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/* Report an error that occured while attempting to load a nexe. */
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static void ReportLoadError(PP_Instance instance,
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PP_NaClError error,
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const char* error_message);
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/* Performs internal setup when an instance is created. */
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static void InstanceCreated(PP_Instance instance);
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/* Performs internal cleanup when an instance is destroyed. */
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static void InstanceDestroyed(PP_Instance instance);
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/* Terminates the NaCl loader process associated with the instance */
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static void TerminateNaClLoader(PP_Instance instance);
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/* Returns the kind of SFI sandbox implemented by NaCl on this
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* platform.
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*/
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static const char* GetSandboxArch(void);
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/* Initializes internal state for a NaCl plugin. */
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static void InitializePlugin(PP_Instance instance,
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uint32_t argc,
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const char* argn[],
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const char* argv[]);
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/* Requests the NaCl manifest specified in the plugin arguments. */
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static void RequestNaClManifest(PP_Instance instance,
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struct PP_CompletionCallback callback);
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static struct PP_Var GetManifestBaseURL(PP_Instance instance);
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/* Processes the NaCl manifest once it's been retrieved.
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* TODO(teravest): Move the rest of the supporting logic out of the trusted
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* plugin.
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*/
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static void ProcessNaClManifest(PP_Instance instance,
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const char* program_url);
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static PP_Bool GetManifestProgramURL(PP_Instance instance,
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struct PP_Var* full_url,
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struct PP_PNaClOptions* pnacl_options);
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/* Returns the filenames for the llc and ld tools. */
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static PP_Bool GetPnaclResourceInfo(PP_Instance instance,
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struct PP_Var* llc_tool_name,
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struct PP_Var* ld_tool_name,
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struct PP_Var* subzero_tool_name);
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/* PP_Var string of attributes describing the CPU features supported
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* by the current architecture. The string is a comma-delimited list
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* of attributes supported by LLVM in its -mattr= option:
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* http://llvm.org/docs/CommandGuide/llc.html#cmdoption-mattr */
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static struct PP_Var GetCpuFeatureAttrs(void);
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/* Downloads the .nexe file at the given URL to a file, and sets |file_info|
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* to information for a handle to a file containing its contents.
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* If metadata for identity-based validation caching is available
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* then it sets token information in |file_info| (otherwise left untouched).
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*/
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static void DownloadNexe(PP_Instance instance,
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const char* url,
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struct PP_NaClFileInfo* file_info,
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struct PP_CompletionCallback callback);
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/* Logs time taken by an operation to UMA histograms.
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* This function is safe to call on any thread.
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*/
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static void LogTranslateTime(const char* histogram_name, int64_t time_us);
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/* Logs amount of pexe bytes compiled when download is complete. */
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static void LogBytesCompiledVsDownloaded(PP_Bool use_subzero,
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int64_t pexe_bytes_compiled,
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int64_t pexe_bytes_downloaded);
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/* Sets the start time for PNaCl downloading and translation to the current
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* time.
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*/
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static void SetPNaClStartTime(PP_Instance instance);
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/* Downloads and streams a pexe file for PNaCl translation.
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* Fetches the content at |pexe_url| for the given instance and opt_level.
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* If a translated cached nexe is already available,
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* the |stream_handler|'s |DidCacheHit| is called. Otherwise, |DidCacheMiss|
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* is called and |DidStreamData| is called repeatedly with blocks of data
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* as they are received. |DidFinishStream| is called after all
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* data has been received and dispatched to |DidStreamData|.
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*/
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static void StreamPexe(PP_Instance instance,
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const char* pexe_url,
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int32_t opt_level,
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PP_Bool use_subzero,
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const struct PPP_PexeStreamHandler_1_0* stream_handler,
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void* stream_handler_user_data);
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};
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} // namespace nacl
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#endif // COMPONENTS_NACL_RENDERER_PPB_NACL_PRIVATE_H_
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