mirror of
https://github.com/dart-lang/sdk
synced 2024-09-16 01:45:06 +00:00
77978889eb
Closes https://github.com/dart-lang/sdk/pull/51143 GitOrigin-RevId: 9e21c99a222d588e4fc95980725a2f8c9784965c Change-Id: If0870e8936c7649935dce7e23cd783d62aa5610c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/279916 Reviewed-by: Alexander Thomas <athom@google.com> Commit-Queue: Alexander Thomas <athom@google.com>
452 lines
15 KiB
C++
452 lines
15 KiB
C++
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
#include "platform/globals.h"
|
|
#if defined(DART_HOST_OS_WINDOWS)
|
|
#include <Psapi.h>
|
|
#include <Windows.h>
|
|
#include <combaseapi.h>
|
|
#include <stdio.h>
|
|
#include <tchar.h>
|
|
#endif
|
|
|
|
#include "vm/bootstrap_natives.h"
|
|
#include "vm/dart_api_impl.h"
|
|
#include "vm/exceptions.h"
|
|
#include "vm/ffi/native_assets.h"
|
|
#include "vm/globals.h"
|
|
#include "vm/hash_table.h"
|
|
#include "vm/native_entry.h"
|
|
#include "vm/object_store.h"
|
|
#include "vm/symbols.h"
|
|
#include "vm/uri.h"
|
|
|
|
#if defined(DART_HOST_OS_LINUX) || defined(DART_HOST_OS_MACOS) || \
|
|
defined(DART_HOST_OS_ANDROID) || defined(DART_HOST_OS_FUCHSIA)
|
|
#include <dlfcn.h>
|
|
#endif
|
|
|
|
namespace dart {
|
|
|
|
#if defined(USING_SIMULATOR) || (defined(DART_PRECOMPILER) && !defined(TESTING))
|
|
|
|
DART_NORETURN static void SimulatorUnsupported() {
|
|
#if defined(USING_SIMULATOR)
|
|
Exceptions::ThrowUnsupportedError(
|
|
"Not supported on simulated architectures.");
|
|
#else
|
|
Exceptions::ThrowUnsupportedError("Not supported in precompiler.");
|
|
#endif
|
|
}
|
|
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_open, 0, 1) {
|
|
SimulatorUnsupported();
|
|
}
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_processLibrary, 0, 0) {
|
|
SimulatorUnsupported();
|
|
}
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_executableLibrary, 0, 0) {
|
|
SimulatorUnsupported();
|
|
}
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_lookup, 1, 2) {
|
|
SimulatorUnsupported();
|
|
}
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_getHandle, 0, 1) {
|
|
SimulatorUnsupported();
|
|
}
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_providesSymbol, 0, 2) {
|
|
SimulatorUnsupported();
|
|
}
|
|
|
|
DEFINE_NATIVE_ENTRY(Ffi_GetFfiNativeResolver, 1, 0) {
|
|
SimulatorUnsupported();
|
|
}
|
|
|
|
#else // defined(USING_SIMULATOR) || \
|
|
// (defined(DART_PRECOMPILER) && !defined(TESTING))
|
|
|
|
// If an error occurs populates |error| (if provided) with an error message
|
|
// (caller must free this message when it is no longer needed).
|
|
static void* LoadDynamicLibrary(const char* library_file,
|
|
char** error = nullptr) {
|
|
char* utils_error = nullptr;
|
|
void* handle = Utils::LoadDynamicLibrary(library_file, &utils_error);
|
|
if (utils_error != nullptr) {
|
|
if (error != nullptr) {
|
|
*error = OS::SCreate(
|
|
/*use malloc*/ nullptr, "Failed to load dynamic library '%s': %s",
|
|
library_file != nullptr ? library_file : "<process>", utils_error);
|
|
}
|
|
free(utils_error);
|
|
}
|
|
return handle;
|
|
}
|
|
|
|
#if defined(DART_HOST_OS_WINDOWS)
|
|
// On windows, nullptr signals trying a lookup in all loaded modules.
|
|
const nullptr_t kWindowsDynamicLibraryProcessPtr = nullptr;
|
|
|
|
void* co_task_mem_allocated = nullptr;
|
|
|
|
// If an error occurs populates |error| with an error message
|
|
// (caller must free this message when it is no longer needed).
|
|
void* LookupSymbolInProcess(const char* symbol, char** error) {
|
|
// Force loading ole32.dll.
|
|
if (co_task_mem_allocated == nullptr) {
|
|
co_task_mem_allocated = CoTaskMemAlloc(sizeof(intptr_t));
|
|
CoTaskMemFree(co_task_mem_allocated);
|
|
}
|
|
|
|
HANDLE current_process =
|
|
OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE,
|
|
GetCurrentProcessId());
|
|
if (current_process == nullptr) {
|
|
*error = OS::SCreate(nullptr, "Failed to open current process.");
|
|
return nullptr;
|
|
}
|
|
|
|
HMODULE modules[1024];
|
|
DWORD cb_needed;
|
|
if (EnumProcessModules(current_process, modules, sizeof(modules),
|
|
&cb_needed) != 0) {
|
|
for (intptr_t i = 0; i < (cb_needed / sizeof(HMODULE)); i++) {
|
|
if (auto result =
|
|
reinterpret_cast<void*>(GetProcAddress(modules[i], symbol))) {
|
|
CloseHandle(current_process);
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
CloseHandle(current_process);
|
|
|
|
*error = OS::SCreate(
|
|
nullptr, // Use `malloc`.
|
|
"None of the loaded modules contained the requested symbol '%s'.",
|
|
symbol);
|
|
return nullptr;
|
|
}
|
|
#endif
|
|
|
|
// If an error occurs populates |error| with an error message
|
|
// (caller must free this message when it is no longer needed).
|
|
static void* ResolveSymbol(void* handle, const char* symbol, char** error) {
|
|
#if defined(DART_HOST_OS_WINDOWS)
|
|
if (handle == kWindowsDynamicLibraryProcessPtr) {
|
|
return LookupSymbolInProcess(symbol, error);
|
|
}
|
|
#endif
|
|
return Utils::ResolveSymbolInDynamicLibrary(handle, symbol, error);
|
|
}
|
|
|
|
static bool SymbolExists(void* handle, const char* symbol) {
|
|
char* error = nullptr;
|
|
#if !defined(DART_HOST_OS_WINDOWS)
|
|
Utils::ResolveSymbolInDynamicLibrary(handle, symbol, &error);
|
|
#else
|
|
if (handle == nullptr) {
|
|
LookupSymbolInProcess(symbol, &error);
|
|
} else {
|
|
Utils::ResolveSymbolInDynamicLibrary(handle, symbol, &error);
|
|
}
|
|
#endif
|
|
if (error != nullptr) {
|
|
free(error);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_open, 0, 1) {
|
|
GET_NON_NULL_NATIVE_ARGUMENT(String, lib_path, arguments->NativeArgAt(0));
|
|
|
|
char* error = nullptr;
|
|
void* handle = LoadDynamicLibrary(lib_path.ToCString(), &error);
|
|
if (error != nullptr) {
|
|
const String& msg = String::Handle(String::New(error));
|
|
free(error);
|
|
Exceptions::ThrowArgumentError(msg);
|
|
}
|
|
return DynamicLibrary::New(handle);
|
|
}
|
|
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_processLibrary, 0, 0) {
|
|
#if defined(DART_HOST_OS_LINUX) || defined(DART_HOST_OS_MACOS) || \
|
|
defined(DART_HOST_OS_ANDROID) || defined(DART_HOST_OS_FUCHSIA)
|
|
return DynamicLibrary::New(RTLD_DEFAULT);
|
|
#else
|
|
return DynamicLibrary::New(kWindowsDynamicLibraryProcessPtr);
|
|
#endif
|
|
}
|
|
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_executableLibrary, 0, 0) {
|
|
return DynamicLibrary::New(LoadDynamicLibrary(nullptr));
|
|
}
|
|
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_lookup, 1, 2) {
|
|
GET_NON_NULL_NATIVE_ARGUMENT(DynamicLibrary, dlib, arguments->NativeArgAt(0));
|
|
GET_NON_NULL_NATIVE_ARGUMENT(String, argSymbolName,
|
|
arguments->NativeArgAt(1));
|
|
|
|
void* handle = dlib.GetHandle();
|
|
|
|
char* error = nullptr;
|
|
const uword pointer = reinterpret_cast<uword>(
|
|
ResolveSymbol(handle, argSymbolName.ToCString(), &error));
|
|
if (error != nullptr) {
|
|
const String& msg = String::Handle(String::NewFormatted(
|
|
"Failed to lookup symbol '%s': %s", argSymbolName.ToCString(), error));
|
|
free(error);
|
|
Exceptions::ThrowArgumentError(msg);
|
|
}
|
|
return Pointer::New(pointer);
|
|
}
|
|
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_getHandle, 0, 1) {
|
|
GET_NON_NULL_NATIVE_ARGUMENT(DynamicLibrary, dlib, arguments->NativeArgAt(0));
|
|
|
|
intptr_t handle = reinterpret_cast<intptr_t>(dlib.GetHandle());
|
|
return Integer::NewFromUint64(handle);
|
|
}
|
|
|
|
DEFINE_NATIVE_ENTRY(Ffi_dl_providesSymbol, 0, 2) {
|
|
GET_NON_NULL_NATIVE_ARGUMENT(DynamicLibrary, dlib, arguments->NativeArgAt(0));
|
|
GET_NON_NULL_NATIVE_ARGUMENT(String, argSymbolName,
|
|
arguments->NativeArgAt(1));
|
|
|
|
void* handle = dlib.GetHandle();
|
|
return Bool::Get(SymbolExists(handle, argSymbolName.ToCString())).ptr();
|
|
}
|
|
|
|
// nullptr if no native resolver is installed.
|
|
static Dart_FfiNativeResolver GetFfiNativeResolver(Thread* const thread,
|
|
const String& lib_url_str) {
|
|
const Library& lib =
|
|
Library::Handle(Library::LookupLibrary(thread, lib_url_str));
|
|
if (lib.IsNull()) {
|
|
// It is not an error to not have a native resolver installed.
|
|
return nullptr;
|
|
}
|
|
return lib.ffi_native_resolver();
|
|
}
|
|
|
|
// If an error occurs populates |error| with an error message
|
|
// (caller must free this message when it is no longer needed).
|
|
static void* FfiResolveWithFfiNativeResolver(Thread* const thread,
|
|
Dart_FfiNativeResolver resolver,
|
|
const String& symbol,
|
|
intptr_t args_n,
|
|
char** error) {
|
|
auto* result = resolver(symbol.ToCString(), args_n);
|
|
if (result == nullptr) {
|
|
*error = OS::SCreate(/*use malloc*/ nullptr,
|
|
"Couldn't resolve function: '%s'", symbol.ToCString());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
#if defined(DART_TARGET_OS_WINDOWS)
|
|
// Replaces back slashes with forward slashes in place.
|
|
static void ReplaceBackSlashes(char* cstr) {
|
|
const intptr_t length = strlen(cstr);
|
|
for (int i = 0; i < length; i++) {
|
|
cstr[i] = cstr[i] == '\\' ? '/' : cstr[i];
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Get a file path with only forward slashes from the script path.
|
|
static StringPtr GetPlatformScriptPath(Thread* thread) {
|
|
IsolateGroupSource* const source = thread->isolate_group()->source();
|
|
|
|
#if defined(DART_TARGET_OS_WINDOWS)
|
|
// Isolate.spawnUri sets a `source` including the file schema.
|
|
// And on Windows we get an extra forward slash in that case.
|
|
const char* path = source->script_uri;
|
|
if (strlen(source->script_uri) > 8 &&
|
|
strncmp(source->script_uri, "file:///", 8) == 0) {
|
|
path = (source->script_uri + 8);
|
|
}
|
|
|
|
// Replace backward slashes with forward slashes.
|
|
const intptr_t len = strlen(path);
|
|
char* path_copy = reinterpret_cast<char*>(malloc(len + 1));
|
|
snprintf(path_copy, len + 1, "%s", path);
|
|
ReplaceBackSlashes(path_copy);
|
|
const auto& result = String::Handle(String::New(path_copy));
|
|
free(path_copy);
|
|
return result.ptr();
|
|
#else
|
|
// Isolate.spawnUri sets a `source` including the file schema.
|
|
if (strlen(source->script_uri) > 7 &&
|
|
strncmp(source->script_uri, "file://", 7) == 0) {
|
|
const char* path = (source->script_uri + 7);
|
|
return String::New(path);
|
|
}
|
|
return String::New(source->script_uri);
|
|
#endif
|
|
}
|
|
|
|
// Array::null if asset is not in mapping or no mapping.
|
|
static ArrayPtr GetAssetLocation(Thread* const thread, const String& asset) {
|
|
Zone* const zone = thread->zone();
|
|
auto& result = Array::Handle(zone);
|
|
|
|
const auto& native_assets_map =
|
|
Array::Handle(zone, GetNativeAssetsMap(thread));
|
|
if (!native_assets_map.IsNull()) {
|
|
NativeAssetsMap map(native_assets_map.ptr());
|
|
const auto& lookup = Object::Handle(zone, map.GetOrNull(asset));
|
|
if (!lookup.IsNull()) {
|
|
result = Array::Cast(lookup).ptr();
|
|
}
|
|
map.Release();
|
|
}
|
|
return result.ptr();
|
|
}
|
|
|
|
// If an error occurs populates |error| with an error message
|
|
// (caller must free this message when it is no longer needed).
|
|
//
|
|
// The |asset_location| is formatted as follows:
|
|
// ['<path_type>', '<path (optional)>']
|
|
// The |asset_location| is conform to: pkg/vm/lib/native_assets/validator.dart
|
|
static void* FfiResolveAsset(Thread* const thread,
|
|
const Array& asset_location,
|
|
const String& symbol,
|
|
char** error) {
|
|
Zone* const zone = thread->zone();
|
|
|
|
const auto& asset_type =
|
|
String::Cast(Object::Handle(zone, asset_location.At(0)));
|
|
String& path = String::Handle(zone);
|
|
if (asset_type.Equals(Symbols::absolute()) ||
|
|
asset_type.Equals(Symbols::relative()) ||
|
|
asset_type.Equals(Symbols::system())) {
|
|
path = String::RawCast(asset_location.At(1));
|
|
}
|
|
void* handle = nullptr;
|
|
if (asset_type.Equals(Symbols::absolute())) {
|
|
handle = LoadDynamicLibrary(path.ToCString(), error);
|
|
} else if (asset_type.Equals(Symbols::relative())) {
|
|
const auto& platform_script_path =
|
|
String::Handle(zone, GetPlatformScriptPath(thread));
|
|
const char* target_uri = nullptr;
|
|
char* path_cstr = path.ToMallocCString();
|
|
#if defined(DART_TARGET_OS_WINDOWS)
|
|
ReplaceBackSlashes(path_cstr);
|
|
#endif
|
|
const bool resolved =
|
|
ResolveUri(path_cstr, platform_script_path.ToCString(), &target_uri);
|
|
free(path_cstr);
|
|
if (!resolved) {
|
|
*error = OS::SCreate(/*use malloc*/ nullptr,
|
|
"Failed to resolve '%s' relative to '%s'.",
|
|
path.ToCString(), platform_script_path.ToCString());
|
|
} else {
|
|
handle = LoadDynamicLibrary(target_uri, error);
|
|
}
|
|
} else if (asset_type.Equals(Symbols::system())) {
|
|
handle = LoadDynamicLibrary(path.ToCString(), error);
|
|
} else if (asset_type.Equals(Symbols::process())) {
|
|
#if defined(DART_HOST_OS_LINUX) || defined(DART_HOST_OS_MACOS) || \
|
|
defined(DART_HOST_OS_ANDROID) || defined(DART_HOST_OS_FUCHSIA)
|
|
handle = RTLD_DEFAULT;
|
|
#else
|
|
handle = kWindowsDynamicLibraryProcessPtr;
|
|
#endif
|
|
} else if (asset_type.Equals(Symbols::executable())) {
|
|
handle = LoadDynamicLibrary(nullptr, error);
|
|
} else {
|
|
UNREACHABLE();
|
|
}
|
|
if (*error != nullptr) {
|
|
char* inner_error = *error;
|
|
*error = OS::SCreate(/*use malloc*/ nullptr,
|
|
"Failed to load dynamic library '%s': %s",
|
|
path.ToCString(), inner_error);
|
|
free(inner_error);
|
|
} else {
|
|
void* const result = ResolveSymbol(handle, symbol.ToCString(), error);
|
|
if (*error != nullptr) {
|
|
char* inner_error = *error;
|
|
*error = OS::SCreate(/*use malloc*/ nullptr,
|
|
"Failed to lookup symbol '%s': %s",
|
|
symbol.ToCString(), inner_error);
|
|
free(inner_error);
|
|
} else {
|
|
return result;
|
|
}
|
|
}
|
|
ASSERT(*error != nullptr);
|
|
return nullptr;
|
|
}
|
|
|
|
// Frees |error|.
|
|
static void ThrowFfiResolveError(const String& symbol,
|
|
const String& asset,
|
|
char* error) {
|
|
const String& error_message = String::Handle(String::NewFormatted(
|
|
"Couldn't resolve native function '%s' in '%s' : %s.\n",
|
|
symbol.ToCString(), asset.ToCString(), error));
|
|
free(error);
|
|
Exceptions::ThrowArgumentError(error_message);
|
|
}
|
|
|
|
// FFI native C function pointer resolver.
|
|
static intptr_t FfiResolve(Dart_Handle asset_handle,
|
|
Dart_Handle symbol_handle,
|
|
uintptr_t args_n) {
|
|
auto* const thread = Thread::Current();
|
|
DARTSCOPE(thread);
|
|
auto* const zone = thread->zone();
|
|
const String& asset = Api::UnwrapStringHandle(zone, asset_handle);
|
|
const String& symbol = Api::UnwrapStringHandle(zone, symbol_handle);
|
|
char* error = nullptr;
|
|
|
|
// Resolver resolution.
|
|
auto resolver = GetFfiNativeResolver(thread, asset);
|
|
if (resolver != nullptr) {
|
|
void* ffi_native_result = FfiResolveWithFfiNativeResolver(
|
|
thread, resolver, symbol, args_n, &error);
|
|
if (error != nullptr) {
|
|
ThrowFfiResolveError(symbol, asset, error);
|
|
}
|
|
return reinterpret_cast<intptr_t>(ffi_native_result);
|
|
}
|
|
|
|
// Native assets resolution.
|
|
const auto& asset_location =
|
|
Array::Handle(zone, GetAssetLocation(thread, asset));
|
|
if (!asset_location.IsNull()) {
|
|
void* asset_result =
|
|
FfiResolveAsset(thread, asset_location, symbol, &error);
|
|
if (error != nullptr) {
|
|
ThrowFfiResolveError(symbol, asset, error);
|
|
}
|
|
return reinterpret_cast<intptr_t>(asset_result);
|
|
}
|
|
|
|
// Resolution in current process.
|
|
#if !defined(DART_HOST_OS_WINDOWS)
|
|
void* const result = Utils::ResolveSymbolInDynamicLibrary(
|
|
RTLD_DEFAULT, symbol.ToCString(), &error);
|
|
#else
|
|
void* const result = LookupSymbolInProcess(symbol.ToCString(), &error);
|
|
#endif
|
|
if (error != nullptr) {
|
|
ThrowFfiResolveError(symbol, asset, error);
|
|
}
|
|
return reinterpret_cast<intptr_t>(result);
|
|
}
|
|
|
|
// Bootstrap to get the FFI Native resolver through a `native` call.
|
|
DEFINE_NATIVE_ENTRY(Ffi_GetFfiNativeResolver, 1, 0) {
|
|
return Pointer::New(reinterpret_cast<intptr_t>(FfiResolve));
|
|
}
|
|
|
|
#endif // defined(USING_SIMULATOR) || \
|
|
// (defined(DART_PRECOMPILER) && !defined(TESTING))
|
|
|
|
} // namespace dart
|