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/*
* Copyright (C) 2007-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#import <wtf/FileSystem.h>
@interface WTFWebFileManagerDelegate : NSObject <NSFileManagerDelegate>
@end
@implementation WTFWebFileManagerDelegate
- (BOOL)fileManager:(NSFileManager *)fileManager shouldProceedAfterError:(NSError *)error movingItemAtURL:(NSURL *)srcURL toURL:(NSURL *)dstURL
{
UNUSED_PARAM(fileManager);
UNUSED_PARAM(srcURL);
UNUSED_PARAM(dstURL);
return error.code == NSFileWriteFileExistsError;
}
@end
namespace WTF {
namespace FileSystemImpl {
String homeDirectoryPath()
{
return NSHomeDirectory();
}
String openTemporaryFile(const String& prefix, PlatformFileHandle& platformFileHandle)
{
platformFileHandle = invalidPlatformFileHandle;
Vector<char> temporaryFilePath(PATH_MAX);
if (!confstr(_CS_DARWIN_USER_TEMP_DIR, temporaryFilePath.data(), temporaryFilePath.size()))
return String();
// Shrink the vector.
temporaryFilePath.shrink(strlen(temporaryFilePath.data()));
// FIXME: Change to a runtime assertion that the path ends with a slash once <rdar://problem/23579077> is
// fixed in all iOS Simulator versions that we use.
if (temporaryFilePath.last() != '/')
temporaryFilePath.append('/');
// Append the file name.
CString prefixUtf8 = prefix.utf8();
temporaryFilePath.append(prefixUtf8.data(), prefixUtf8.length());
temporaryFilePath.append("XXXXXX", 6);
temporaryFilePath.append('\0');
platformFileHandle = mkstemp(temporaryFilePath.data());
if (platformFileHandle == invalidPlatformFileHandle)
return String();
return String::fromUTF8(temporaryFilePath.data());
}
bool moveFile(const String& oldPath, const String& newPath)
{
// Overwrite existing files.
auto manager = adoptNS([[NSFileManager alloc] init]);
auto delegate = adoptNS([[WTFWebFileManagerDelegate alloc] init]);
[manager setDelegate:delegate.get()];
NSError *error = nil;
bool success = [manager moveItemAtURL:[NSURL fileURLWithPath:oldPath] toURL:[NSURL fileURLWithPath:newPath] error:&error];
if (!success)
NSLog(@"Error in moveFile: %@", error);
return success;
}
bool getVolumeFreeSpace(const String& path, uint64_t& freeSpace)
{
NSDictionary *fileSystemAttributesDictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:(NSString *)path error:NULL];
if (!fileSystemAttributesDictionary)
return false;
freeSpace = [[fileSystemAttributesDictionary objectForKey:NSFileSystemFreeSize] unsignedLongLongValue];
return true;
}
NSString *createTemporaryDirectory(NSString *directoryPrefix)
{
NSString *tempDirectory = NSTemporaryDirectory();
if (!tempDirectory || ![tempDirectory length])
return nil;
if (!directoryPrefix || ![directoryPrefix length])
return nil;
NSString *tempDirectoryComponent = [directoryPrefix stringByAppendingString:@"-XXXXXXXX"];
const char* tempDirectoryCString = [[tempDirectory stringByAppendingPathComponent:tempDirectoryComponent] fileSystemRepresentation];
if (!tempDirectoryCString)
return nil;
const size_t length = strlen(tempDirectoryCString);
ASSERT(length <= MAXPATHLEN);
if (length > MAXPATHLEN)
return nil;
const size_t lengthPlusNullTerminator = length + 1;
Vector<char, MAXPATHLEN + 1> path(lengthPlusNullTerminator);
memcpy(path.data(), tempDirectoryCString, lengthPlusNullTerminator);
if (!mkdtemp(path.data()))
return nil;
return [[NSFileManager defaultManager] stringWithFileSystemRepresentation:path.data() length:length];
}
bool deleteNonEmptyDirectory(const String& path)
{
return [[NSFileManager defaultManager] removeItemAtPath:path error:nil];
}
#if PLATFORM(IOS_FAMILY)
bool isSafeToUseMemoryMapForPath(const String& path)
{
NSError *error = nil;
NSDictionary<NSFileAttributeKey, id> *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:path error:&error];
if (error) {
LOG_ERROR("Unable to get path protection class");
return false;
}
if ([[attributes objectForKey:NSFileProtectionKey] isEqualToString:NSFileProtectionComplete]) {
LOG_ERROR("Path protection class is NSFileProtectionComplete, so it is not safe to use memory map");
return false;
}
return true;
}
void makeSafeToUseMemoryMapForPath(const String& path)
{
if (isSafeToUseMemoryMapForPath(path))
return;
NSError *error = nil;
BOOL success = [[NSFileManager defaultManager] setAttributes:@{ NSFileProtectionKey: NSFileProtectionCompleteUnlessOpen } ofItemAtPath:path error:&error];
ASSERT(!error);
ASSERT_UNUSED(success, success);
}
#endif
} // namespace FileSystemImpl
} // namespace WTF