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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.
- // Defines base::PathProviderMac which replaces base::PathProviderPosix for Mac
- // in base/path_service.cc.
- #include <dlfcn.h>
- #import <Foundation/Foundation.h>
- #include <mach-o/dyld.h>
- #include <stdint.h>
- #include "base/base_paths.h"
- #include "base/check_op.h"
- #include "base/files/file_path.h"
- #include "base/files/file_util.h"
- #include "base/mac/bundle_locations.h"
- #include "base/mac/foundation_util.h"
- #include "base/notreached.h"
- #include "base/path_service.h"
- #include "base/strings/string_util.h"
- #include "base/threading/thread_restrictions.h"
- #include "build/build_config.h"
- namespace {
- void GetNSExecutablePath(base::FilePath* path) {
- DCHECK(path);
- // Executable path can have relative references ("..") depending on
- // how the app was launched.
- uint32_t executable_length = 0;
- _NSGetExecutablePath(NULL, &executable_length);
- DCHECK_GT(executable_length, 1u);
- std::string executable_path;
- int rv = _NSGetExecutablePath(
- base::WriteInto(&executable_path, executable_length),
- &executable_length);
- DCHECK_EQ(rv, 0);
- // _NSGetExecutablePath may return paths containing ./ or ../ which makes
- // FilePath::DirName() work incorrectly, convert it to absolute path so that
- // paths such as DIR_SRC_TEST_DATA_ROOT can work, since we expect absolute
- // paths to be returned here.
- // TODO(bauerb): http://crbug.com/259796, http://crbug.com/373477
- base::ThreadRestrictions::ScopedAllowIO allow_io;
- *path = base::MakeAbsoluteFilePath(base::FilePath(executable_path));
- }
- // Returns true if the module for |address| is found. |path| will contain
- // the path to the module. Note that |path| may not be absolute.
- [[nodiscard]] bool GetModulePathForAddress(base::FilePath* path,
- const void* address);
- bool GetModulePathForAddress(base::FilePath* path, const void* address) {
- Dl_info info;
- if (dladdr(address, &info) == 0)
- return false;
- *path = base::FilePath(info.dli_fname);
- return true;
- }
- } // namespace
- namespace base {
- bool PathProviderMac(int key, base::FilePath* result) {
- switch (key) {
- case base::FILE_EXE:
- GetNSExecutablePath(result);
- return true;
- case base::FILE_MODULE:
- return GetModulePathForAddress(result,
- reinterpret_cast<const void*>(&base::PathProviderMac));
- case base::DIR_APP_DATA: {
- bool success = base::mac::GetUserDirectory(NSApplicationSupportDirectory,
- result);
- #if BUILDFLAG(IS_IOS)
- // On IOS, this directory does not exist unless it is created explicitly.
- if (success && !base::PathExists(*result))
- success = base::CreateDirectory(*result);
- #endif // BUILDFLAG(IS_IOS)
- return success;
- }
- case base::DIR_SRC_TEST_DATA_ROOT:
- #if BUILDFLAG(IS_IOS)
- // On iOS, there is no access to source root, however, the necessary
- // resources are packaged into the test as assets.
- return PathService::Get(base::DIR_ASSETS, result);
- #else
- // Go through PathService to catch overrides.
- if (!PathService::Get(base::FILE_EXE, result))
- return false;
- // Start with the executable's directory.
- *result = result->DirName();
- if (base::mac::AmIBundled()) {
- // The bundled app executables (Chromium, TestShell, etc) live five
- // levels down, eg:
- // src/xcodebuild/{Debug|Release}/Chromium.app/Contents/MacOS/Chromium
- *result = result->DirName().DirName().DirName().DirName().DirName();
- } else {
- // Unit tests execute two levels deep from the source root, eg:
- // src/xcodebuild/{Debug|Release}/base_unittests
- *result = result->DirName().DirName();
- }
- return true;
- #endif // BUILDFLAG(IS_IOS)
- case base::DIR_USER_DESKTOP:
- #if BUILDFLAG(IS_IOS)
- // iOS does not have desktop directories.
- NOTIMPLEMENTED();
- return false;
- #else
- return base::mac::GetUserDirectory(NSDesktopDirectory, result);
- #endif
- case base::DIR_ASSETS:
- #if BUILDFLAG(IS_IOS) && !BUILDFLAG(IS_IOS_MACCATALYST)
- // On iOS, the assets are located next to the module binary.
- return PathService::Get(base::DIR_MODULE, result);
- #else
- if (!base::mac::AmIBundled()) {
- return PathService::Get(base::DIR_MODULE, result);
- }
- #if BUILDFLAG(IS_IOS_MACCATALYST)
- *result = base::mac::MainBundlePath()
- .Append(FILE_PATH_LITERAL("Contents"))
- .Append(FILE_PATH_LITERAL("Resources"));
- #else
- *result = base::mac::FrameworkBundlePath().Append(
- FILE_PATH_LITERAL("Resources"));
- #endif // BUILDFLAG(IS_IOS_MACCATALYST)
- return true;
- #endif // BUILDFLAG(IS_IOS) && !BUILDFLAG(IS_IOS_MACCATALYST)
- case base::DIR_CACHE:
- return base::mac::GetUserDirectory(NSCachesDirectory, result);
- default:
- return false;
- }
- }
- } // namespace base
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