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.
5 // Defines base::PathProviderMac which replaces base::PathProviderPosix for Mac
6 // in base/path_service.cc.
9 #import <Foundation/Foundation.h>
10 #include <mach-o/dyld.h>
13 #include "base/base_paths.h"
14 #include "base/compiler_specific.h"
15 #include "base/files/file_path.h"
16 #include "base/files/file_util.h"
17 #include "base/logging.h"
18 #include "base/mac/bundle_locations.h"
19 #include "base/mac/foundation_util.h"
20 #include "base/path_service.h"
21 #include "base/strings/string_util.h"
22 #include "base/threading/thread_restrictions.h"
23 #include "build/build_config.h"
27 void GetNSExecutablePath(base::FilePath* path) {
29 // Executable path can have relative references ("..") depending on
30 // how the app was launched.
31 uint32_t executable_length = 0;
32 _NSGetExecutablePath(NULL, &executable_length);
33 DCHECK_GT(executable_length, 1u);
34 std::string executable_path;
35 int rv = _NSGetExecutablePath(
36 base::WriteInto(&executable_path, executable_length),
40 // _NSGetExecutablePath may return paths containing ./ or ../ which makes
41 // FilePath::DirName() work incorrectly, convert it to absolute path so that
42 // paths such as DIR_SOURCE_ROOT can work, since we expect absolute paths to
44 // TODO(bauerb): http://crbug.com/259796, http://crbug.com/373477
45 base::ThreadRestrictions::ScopedAllowIO allow_io;
46 *path = base::MakeAbsoluteFilePath(base::FilePath(executable_path));
49 // Returns true if the module for |address| is found. |path| will contain
50 // the path to the module. Note that |path| may not be absolute.
51 bool GetModulePathForAddress(base::FilePath* path,
52 const void* address) WARN_UNUSED_RESULT;
54 bool GetModulePathForAddress(base::FilePath* path, const void* address) {
56 if (dladdr(address, &info) == 0)
58 *path = base::FilePath(info.dli_fname);
66 bool PathProviderMac(int key, base::FilePath* result) {
69 GetNSExecutablePath(result);
71 case base::FILE_MODULE:
72 return GetModulePathForAddress(result,
73 reinterpret_cast<const void*>(&base::PathProviderMac));
74 case base::DIR_APP_DATA: {
75 bool success = base::mac::GetUserDirectory(NSApplicationSupportDirectory,
78 // On IOS, this directory does not exist unless it is created explicitly.
79 if (success && !base::PathExists(*result))
80 success = base::CreateDirectory(*result);
81 #endif // defined(OS_IOS)
84 case base::DIR_SOURCE_ROOT:
85 // Go through PathService to catch overrides.
86 if (!PathService::Get(base::FILE_EXE, result))
89 // Start with the executable's directory.
90 *result = result->DirName();
93 if (base::mac::AmIBundled()) {
94 // The bundled app executables (Chromium, TestShell, etc) live five
96 // src/xcodebuild/{Debug|Release}/Chromium.app/Contents/MacOS/Chromium
97 *result = result->DirName().DirName().DirName().DirName().DirName();
99 // Unit tests execute two levels deep from the source root, eg:
100 // src/xcodebuild/{Debug|Release}/base_unittests
101 *result = result->DirName().DirName();
105 case base::DIR_USER_DESKTOP:
107 // iOS does not have desktop directories.
111 return base::mac::GetUserDirectory(NSDesktopDirectory, result);
113 case base::DIR_ASSETS:
114 if (!base::mac::AmIBundled()) {
115 return PathService::Get(base::DIR_MODULE, result);
117 *result = base::mac::FrameworkBundlePath().Append(
118 FILE_PATH_LITERAL("Resources"));
120 case base::DIR_CACHE:
121 return base::mac::GetUserDirectory(NSCachesDirectory, result);