/// <inheritdoc />
public async Task <IReadOnlyList <ConfigurationFile> > ListDirectory(string configurationRelativePath, ISystemIdentity systemIdentity, CancellationToken cancellationToken)
{
await EnsureDirectories(cancellationToken).ConfigureAwait(false);
var path = ValidateConfigRelativePath(configurationRelativePath);
if (configurationRelativePath == null)
{
configurationRelativePath = "/";
}
List <ConfigurationFile> result = new List <ConfigurationFile>();
void ListImpl()
{
var enumerator = synchronousIOManager.GetDirectories(path, cancellationToken);
try
{
result.AddRange(enumerator.Select(x => new ConfigurationFile
{
IsDirectory = true,
Path = ioManager.ConcatPath(configurationRelativePath, x),
}).OrderBy(file => file.Path));
}
catch (IOException e)
{
logger.LogDebug("IOException while writing {0}: {1}", path, e);
result = null;
return;
}
enumerator = synchronousIOManager.GetFiles(path, cancellationToken);
result.AddRange(enumerator.Select(x => new ConfigurationFile
{
IsDirectory = false,
Path = ioManager.ConcatPath(configurationRelativePath, x),
}).OrderBy(file => file.Path));
}
using (await SemaphoreSlimContext.Lock(semaphore, cancellationToken).ConfigureAwait(false))
if (systemIdentity == null)
{
ListImpl();
}
else
{
await systemIdentity.RunImpersonated(ListImpl, cancellationToken).ConfigureAwait(false);
}
return(result);
}
/// <inheritdoc />
public async Task <bool> CreateDirectory(string configurationRelativePath, ISystemIdentity systemIdentity, CancellationToken cancellationToken)
{
await EnsureDirectories(cancellationToken).ConfigureAwait(false);
var path = ValidateConfigRelativePath(configurationRelativePath);
bool?result = null;
void DoCreate() => result = synchronousIOManager.CreateDirectory(path, cancellationToken);
if (systemIdentity == null)
{
await Task.Factory.StartNew(DoCreate, cancellationToken, TaskCreationOptions.LongRunning, TaskScheduler.Current).ConfigureAwait(false);
}
else
{
await systemIdentity.RunImpersonated(DoCreate, cancellationToken).ConfigureAwait(false);
}
return(result.Value);
}
/// <inheritdoc />
public async Task <bool> DeleteDirectory(string configurationRelativePath, ISystemIdentity systemIdentity, CancellationToken cancellationToken)
{
await EnsureDirectories(cancellationToken).ConfigureAwait(false);
var path = ValidateConfigRelativePath(configurationRelativePath);
var result = false;
using (await SemaphoreSlimContext.Lock(semaphore, cancellationToken).ConfigureAwait(false))
{
void CheckDeleteImpl() => result = synchronousIOManager.DeleteDirectory(path);
if (systemIdentity != null)
{
await systemIdentity.RunImpersonated(CheckDeleteImpl, cancellationToken).ConfigureAwait(false);
}
else
{
CheckDeleteImpl();
}
}
return(result);
}
/// <inheritdoc />
public async Task <ConfigurationFile> Write(string configurationRelativePath, ISystemIdentity systemIdentity, byte[] data, string previousHash, CancellationToken cancellationToken)
{
await EnsureDirectories(cancellationToken).ConfigureAwait(false);
var path = ValidateConfigRelativePath(configurationRelativePath);
ConfigurationFile result = null;
void WriteImpl()
{
lock (this)
try
{
var fileHash = previousHash;
var success = synchronousIOManager.WriteFileChecked(path, data, ref fileHash, cancellationToken);
if (!success)
{
return;
}
result = new ConfigurationFile
{
Content = data,
IsDirectory = false,
LastReadHash = fileHash,
AccessDenied = false,
Path = configurationRelativePath
};
}
catch (UnauthorizedAccessException)
{
//this happens on windows, dunno about linux
bool isDirectory;
try
{
isDirectory = synchronousIOManager.IsDirectory(path);
}
catch
{
isDirectory = false;
}
result = new ConfigurationFile
{
Path = configurationRelativePath
};
if (!isDirectory)
{
result.AccessDenied = true;
}
else
{
result.IsDirectory = true;
}
}
}
using (await SemaphoreSlimContext.Lock(semaphore, cancellationToken).ConfigureAwait(false))
if (systemIdentity == null)
{
await Task.Factory.StartNew(WriteImpl, cancellationToken, TaskCreationOptions.LongRunning, TaskScheduler.Current).ConfigureAwait(false);
}
else
{
await systemIdentity.RunImpersonated(WriteImpl, cancellationToken).ConfigureAwait(false);
}
return(result);
}
/// <inheritdoc />
public async Task <ConfigurationFile> Read(string configurationRelativePath, ISystemIdentity systemIdentity, CancellationToken cancellationToken)
{
await EnsureDirectories(cancellationToken).ConfigureAwait(false);
var path = ValidateConfigRelativePath(configurationRelativePath);
ConfigurationFile result = null;
void ReadImpl()
{
lock (this)
try
{
var content = synchronousIOManager.ReadFile(path);
string sha1String;
#pragma warning disable CA5350 // Do not use insecure cryptographic algorithm SHA1.
using (var sha1 = new SHA1Managed())
#pragma warning restore CA5350 // Do not use insecure cryptographic algorithm SHA1.
sha1String = String.Join("", sha1.ComputeHash(content).Select(b => b.ToString("x2", CultureInfo.InvariantCulture)));
result = new ConfigurationFile
{
Content = content,
IsDirectory = false,
LastReadHash = sha1String,
AccessDenied = false,
Path = configurationRelativePath
};
}
catch (UnauthorizedAccessException)
{
//this happens on windows, dunno about linux
bool isDirectory;
try
{
isDirectory = synchronousIOManager.IsDirectory(path);
}
catch
{
isDirectory = false;
}
result = new ConfigurationFile
{
Path = configurationRelativePath
};
if (!isDirectory)
{
result.AccessDenied = true;
}
else
{
result.IsDirectory = true;
}
}
}
using (await SemaphoreSlimContext.Lock(semaphore, cancellationToken).ConfigureAwait(false))
if (systemIdentity == null)
{
await Task.Factory.StartNew(ReadImpl, cancellationToken, TaskCreationOptions.LongRunning, TaskScheduler.Current).ConfigureAwait(false);
}
else
{
await systemIdentity.RunImpersonated(ReadImpl, cancellationToken).ConfigureAwait(false);
}
return(result);
}