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// Copyright 2021 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.
#include "base/mac/backup_util.h"
#include <CoreServices/CoreServices.h>
#import <Foundation/Foundation.h>
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/mac/foundation_util.h"
#include "base/mac/mac_logging.h"
#include "base/strings/sys_string_conversions.h"
#include "base/threading/scoped_blocking_call.h"
#include "build/build_config.h"
namespace base::mac {
bool GetBackupExclusion(const FilePath& file_path) {
base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
base::BlockingType::MAY_BLOCK);
#if BUILDFLAG(IS_MAC)
return CSBackupIsItemExcluded(FilePathToCFURL(file_path), nullptr);
#elif BUILDFLAG(IS_IOS)
NSURL* file_url = FilePathToNSURL(file_path);
DCHECK([[NSFileManager defaultManager] fileExistsAtPath:file_url.path]);
NSError* error = nil;
NSNumber* value = nil;
BOOL success = [file_url getResourceValue:&value
forKey:NSURLIsExcludedFromBackupKey
error:&error];
if (!success) {
LOG(ERROR) << base::SysNSStringToUTF8([error description]);
return false;
}
return value && value.boolValue;
#endif
}
namespace {
bool SetBackupState(const FilePath& file_path, bool excluded) {
base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
base::BlockingType::MAY_BLOCK);
#if BUILDFLAG(IS_MAC)
// When excludeByPath is true the application must be running with root
// privileges (admin for 10.6 and earlier) but the URL does not have to
// already exist. When excludeByPath is false the URL must already exist but
// can be used in non-root (or admin as above) mode. We use false so that
// non-root (or admin) users don't get their TimeMachine drive filled up with
// unnecessary backups.
OSStatus os_err =
CSBackupSetItemExcluded(FilePathToCFURL(file_path), excluded,
/*excludeByPath=*/FALSE);
OSSTATUS_DLOG_IF(WARNING, os_err != noErr, os_err)
<< "Failed to set backup exclusion for file '"
<< file_path.value().c_str() << "'";
return os_err == noErr;
#elif BUILDFLAG(IS_IOS)
NSURL* file_url = FilePathToNSURL(file_path);
DCHECK([[NSFileManager defaultManager] fileExistsAtPath:file_url.path]);
NSError* error = nil;
BOOL success = [file_url setResourceValue:@(excluded)
forKey:NSURLIsExcludedFromBackupKey
error:&error];
LOG_IF(WARNING, !success) << base::SysNSStringToUTF8([error description]);
return success;
#endif
}
} // namespace
bool SetBackupExclusion(const FilePath& file_path) {
return SetBackupState(file_path, true);
}
bool ClearBackupExclusion(const FilePath& file_path) {
return SetBackupState(file_path, false);
}
} // namespace base::mac
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