internal static void DeleteDirectoryNoThrow(string path, bool recursive)
{
int retryCount;
int retryTimeOut;
// Try parse will set the out parameter to 0 if the string passed in is null, or is outside the range of an int.
if (!int.TryParse(Environment.GetEnvironmentVariable("MSBUILDDIRECTORYDELETERETRYCOUNT"), out retryCount))
{
retryCount = 0;
}
if (!int.TryParse(Environment.GetEnvironmentVariable("MSBUILDDIRECTORYDELETRETRYTIMEOUT"), out retryTimeOut))
{
retryTimeOut = 0;
}
retryCount = retryCount < 1 ? 2 : retryCount;
retryTimeOut = retryTimeOut < 1 ? 500 : retryTimeOut;
for (int i = 0; i < retryCount; i++)
{
try
{
if (Directory.Exists(path))
{
Directory.Delete(path, recursive);
break;
}
}
catch (Exception ex) when(ExceptionHandling.IsIoRelatedException(ex))
{
}
if (i + 1 < retryCount) // should not wait for the final iteration since we not gonna check anyway
{
Thread.Sleep(retryTimeOut);
}
}
}
/// <summary>
/// Creates a file with unique temporary file name with a given extension in the specified folder.
/// File is guaranteed to be unique.
/// Extension may have an initial period.
/// If folder is null, the temporary folder will be used.
/// Caller must delete it when finished.
/// May throw IOException.
/// </summary>
internal static string GetTemporaryFile(string directory, string extension)
{
ErrorUtilities.VerifyThrowArgumentLengthIfNotNull(directory, "directory");
ErrorUtilities.VerifyThrowArgumentLength(extension, "extension");
if (extension[0] != '.')
{
extension = '.' + extension;
}
string file = null;
try
{
directory = directory ?? Path.GetTempPath();
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
file = Path.Combine(directory, "tmp" + Guid.NewGuid().ToString("N") + extension);
ErrorUtilities.VerifyThrow(!File.Exists(file), "Guid should be unique");
File.WriteAllText(file, String.Empty);
}
catch (Exception ex)
{
if (ExceptionHandling.NotExpectedException(ex))
{
throw;
}
throw new IOException(ResourceUtilities.FormatResourceString("Shared.FailedCreatingTempFile", ex.Message), ex);
}
return(file);
}
internal static FileInfo GetFileInfoNoThrow(string filePath)
{
FileInfo info;
filePath = AttemptToShortenPath(filePath);
try
{
info = new FileInfo(filePath);
}
catch (Exception exception)
{
if (ExceptionHandling.NotExpectedException(exception))
{
throw;
}
return(null);
}
if (info.Exists)
{
return(info);
}
return(null);
}
internal static string GetItemSpecModifier(string currentDirectory, string itemSpec, string definingProjectEscaped, string modifier, ref string fullPath)
{
ErrorUtilities.VerifyThrow(itemSpec != null, "Need item-spec to modify.");
ErrorUtilities.VerifyThrow(modifier != null, "Need modifier to apply to item-spec.");
string modifiedItemSpec = null;
try
{
if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.FullPath, StringComparison.OrdinalIgnoreCase))
{
if (fullPath != null)
{
return(fullPath);
}
if (currentDirectory == null)
{
currentDirectory = String.Empty;
}
modifiedItemSpec = GetFullPath(itemSpec, currentDirectory);
fullPath = modifiedItemSpec;
ThrowForUrl(modifiedItemSpec, itemSpec, currentDirectory);
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.RootDir, StringComparison.OrdinalIgnoreCase))
{
GetItemSpecModifier(currentDirectory, itemSpec, definingProjectEscaped, ItemSpecModifiers.FullPath, ref fullPath);
modifiedItemSpec = Path.GetPathRoot(fullPath);
if (!EndsWithSlash(modifiedItemSpec))
{
ErrorUtilities.VerifyThrow(FileUtilitiesRegex.StartsWithUncPattern(modifiedItemSpec),
"Only UNC shares should be missing trailing slashes.");
// restore/append trailing slash if Path.GetPathRoot() has either removed it, or failed to add it
// (this happens with UNC shares)
modifiedItemSpec += Path.DirectorySeparatorChar;
}
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.Filename, StringComparison.OrdinalIgnoreCase))
{
// if the item-spec is a root directory, it can have no filename
if (IsRootDirectory(itemSpec))
{
// NOTE: this is to prevent Path.GetFileNameWithoutExtension() from treating server and share elements
// in a UNC file-spec as filenames e.g. \\server, \\server\share
modifiedItemSpec = String.Empty;
}
else
{
// Fix path to avoid problem with Path.GetFileNameWithoutExtension when backslashes in itemSpec on Unix
modifiedItemSpec = Path.GetFileNameWithoutExtension(FixFilePath(itemSpec));
}
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.Extension, StringComparison.OrdinalIgnoreCase))
{
// if the item-spec is a root directory, it can have no extension
if (IsRootDirectory(itemSpec))
{
// NOTE: this is to prevent Path.GetExtension() from treating server and share elements in a UNC
// file-spec as filenames e.g. \\server.ext, \\server\share.ext
modifiedItemSpec = String.Empty;
}
else
{
modifiedItemSpec = Path.GetExtension(itemSpec);
}
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.RelativeDir, StringComparison.OrdinalIgnoreCase))
{
modifiedItemSpec = GetDirectory(itemSpec);
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.Directory, StringComparison.OrdinalIgnoreCase))
{
GetItemSpecModifier(currentDirectory, itemSpec, definingProjectEscaped, ItemSpecModifiers.FullPath, ref fullPath);
modifiedItemSpec = GetDirectory(fullPath);
if (NativeMethodsShared.IsWindows)
{
int length = -1;
if (FileUtilitiesRegex.StartsWithDrivePattern(modifiedItemSpec))
{
length = 2;
}
else
{
length = FileUtilitiesRegex.StartsWithUncPatternMatchLength(modifiedItemSpec);
}
if (length != -1)
{
ErrorUtilities.VerifyThrow((modifiedItemSpec.Length > length) && IsSlash(modifiedItemSpec[length]),
"Root directory must have a trailing slash.");
modifiedItemSpec = modifiedItemSpec.Substring(length + 1);
}
}
else
{
ErrorUtilities.VerifyThrow(!string.IsNullOrEmpty(modifiedItemSpec) && IsSlash(modifiedItemSpec[0]),
"Expected a full non-windows path rooted at '/'.");
// A full unix path is always rooted at
// `/`, and a root-relative path is the
// rest of the string.
modifiedItemSpec = modifiedItemSpec.Substring(1);
}
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.RecursiveDir, StringComparison.OrdinalIgnoreCase))
{
// only the BuildItem class can compute this modifier -- so leave empty
modifiedItemSpec = String.Empty;
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.Identity, StringComparison.OrdinalIgnoreCase))
{
modifiedItemSpec = itemSpec;
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.ModifiedTime, StringComparison.OrdinalIgnoreCase))
{
// About to go out to the filesystem. This means data is leaving the engine, so need
// to unescape first.
string unescapedItemSpec = EscapingUtilities.UnescapeAll(itemSpec);
FileInfo info = FileUtilities.GetFileInfoNoThrow(unescapedItemSpec);
if (info != null)
{
modifiedItemSpec = info.LastWriteTime.ToString(FileTimeFormat, null);
}
else
{
// File does not exist, or path is a directory
modifiedItemSpec = String.Empty;
}
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.CreatedTime, StringComparison.OrdinalIgnoreCase))
{
// About to go out to the filesystem. This means data is leaving the engine, so need
// to unescape first.
string unescapedItemSpec = EscapingUtilities.UnescapeAll(itemSpec);
if (FileSystems.Default.FileExists(unescapedItemSpec))
{
modifiedItemSpec = File.GetCreationTime(unescapedItemSpec).ToString(FileTimeFormat, null);
}
else
{
// File does not exist, or path is a directory
modifiedItemSpec = String.Empty;
}
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.AccessedTime, StringComparison.OrdinalIgnoreCase))
{
// About to go out to the filesystem. This means data is leaving the engine, so need
// to unescape first.
string unescapedItemSpec = EscapingUtilities.UnescapeAll(itemSpec);
if (FileSystems.Default.FileExists(unescapedItemSpec))
{
modifiedItemSpec = File.GetLastAccessTime(unescapedItemSpec).ToString(FileTimeFormat, null);
}
else
{
// File does not exist, or path is a directory
modifiedItemSpec = String.Empty;
}
}
else if (IsDefiningProjectModifier(modifier))
{
if (String.IsNullOrEmpty(definingProjectEscaped))
{
// We have nothing to work with, but that's sometimes OK -- so just return String.Empty
modifiedItemSpec = String.Empty;
}
else
{
if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.DefiningProjectDirectory, StringComparison.OrdinalIgnoreCase))
{
// ItemSpecModifiers.Directory does not contain the root directory
modifiedItemSpec = Path.Combine
(
GetItemSpecModifier(currentDirectory, definingProjectEscaped, null, ItemSpecModifiers.RootDir),
GetItemSpecModifier(currentDirectory, definingProjectEscaped, null, ItemSpecModifiers.Directory)
);
}
else
{
string additionalModifier = null;
if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.DefiningProjectFullPath, StringComparison.OrdinalIgnoreCase))
{
additionalModifier = ItemSpecModifiers.FullPath;
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.DefiningProjectName, StringComparison.OrdinalIgnoreCase))
{
additionalModifier = ItemSpecModifiers.Filename;
}
else if (string.Equals(modifier, FileUtilities.ItemSpecModifiers.DefiningProjectExtension, StringComparison.OrdinalIgnoreCase))
{
additionalModifier = ItemSpecModifiers.Extension;
}
else
{
ErrorUtilities.ThrowInternalError("\"{0}\" is not a valid item-spec modifier.", modifier);
}
modifiedItemSpec = GetItemSpecModifier(currentDirectory, definingProjectEscaped, null, additionalModifier);
}
}
}
else
{
ErrorUtilities.ThrowInternalError("\"{0}\" is not a valid item-spec modifier.", modifier);
}
}
catch (Exception e) when(ExceptionHandling.IsIoRelatedException(e))
{
ErrorUtilities.VerifyThrowInvalidOperation(false, "Shared.InvalidFilespecForTransform", modifier, itemSpec, e.Message);
}
return(modifiedItemSpec);
}
private static NamedPipeClientStream TryConnectToProcess(string pipeName, int?nodeProcessId, int timeout, Handshake handshake)
{
NamedPipeClientStream nodeStream = new NamedPipeClientStream(".", pipeName, PipeDirection.InOut, PipeOptions.Asynchronous
#if FEATURE_PIPEOPTIONS_CURRENTUSERONLY
| PipeOptions.CurrentUserOnly
#endif
);
CommunicationsUtilities.Trace("Attempting connect to PID {0} with pipe {1} with timeout {2} ms", nodeProcessId.HasValue ? nodeProcessId.Value.ToString() : pipeName, pipeName, timeout);
try
{
nodeStream.Connect(timeout);
#if !FEATURE_PIPEOPTIONS_CURRENTUSERONLY
if (NativeMethodsShared.IsWindows && !NativeMethodsShared.IsMono)
{
// Verify that the owner of the pipe is us. This prevents a security hole where a remote node has
// been faked up with ACLs that would let us attach to it. It could then issue fake build requests back to
// us, potentially causing us to execute builds that do harmful or unexpected things. The pipe owner can
// only be set to the user's own SID by a normal, unprivileged process. The conditions where a faked up
// remote node could set the owner to something else would also let it change owners on other objects, so
// this would be a security flaw upstream of us.
ValidateRemotePipeSecurityOnWindows(nodeStream);
}
#endif
int[] handshakeComponents = handshake.RetrieveHandshakeComponents();
for (int i = 0; i < handshakeComponents.Length; i++)
{
CommunicationsUtilities.Trace("Writing handshake part {0} to pipe {1}", i, pipeName);
nodeStream.WriteIntForHandshake(handshakeComponents[i]);
}
// This indicates that we have finished all the parts of our handshake; hopefully the endpoint has as well.
nodeStream.WriteEndOfHandshakeSignal();
CommunicationsUtilities.Trace("Reading handshake from pipe {0}", pipeName);
#if NETCOREAPP2_1 || MONO
nodeStream.ReadEndOfHandshakeSignal(true, timeout);
#else
nodeStream.ReadEndOfHandshakeSignal(true);
#endif
// We got a connection.
CommunicationsUtilities.Trace("Successfully connected to pipe {0}...!", pipeName);
return(nodeStream);
}
catch (Exception e) when(!ExceptionHandling.IsCriticalException(e))
{
// Can be:
// UnauthorizedAccessException -- Couldn't connect, might not be a node.
// IOException -- Couldn't connect, already in use.
// TimeoutException -- Couldn't connect, might not be a node.
// InvalidOperationException – Couldn’t connect, probably a different build
CommunicationsUtilities.Trace("Failed to connect to pipe {0}. {1}", pipeName, e.Message.TrimEnd());
// If we don't close any stream, we might hang up the child
nodeStream?.Dispose();
}
return(null);
}
internal static bool NotExpectedFunctionException(Exception e)
{
return(!(e is InvalidCastException) && !(e is ArgumentNullException) && (!(e is FormatException) && !(e is InvalidOperationException)) && ExceptionHandling.NotExpectedReflectionException(e));
}
internal static bool NotExpectedSerializationException(Exception e)
{
return(!(e is SerializationException) && ExceptionHandling.NotExpectedReflectionException(e));
}
internal static bool NotExpectedReflectionException(Exception e)
{
return(!(e is TypeLoadException) && !(e is MethodAccessException) && (!(e is MissingMethodException) && !(e is MemberAccessException)) && (!(e is BadImageFormatException) && !(e is ReflectionTypeLoadException) && (!(e is CustomAttributeFormatException) && !(e is TargetParameterCountException))) && (!(e is InvalidCastException) && !(e is AmbiguousMatchException) && (!(e is InvalidFilterCriteriaException) && !(e is TargetException)) && (!(e is MissingFieldException) && ExceptionHandling.NotExpectedException(e))));
}
internal static bool NotExpectedIoOrXmlException(Exception e)
{
return(!ExceptionHandling.IsXmlException(e) && ExceptionHandling.NotExpectedException(e));
}
internal static bool IsIoRelatedException(Exception e)
{
return(!ExceptionHandling.NotExpectedException(e));
}
internal static void UnhandledExceptionHandler(object sender, UnhandledExceptionEventArgs e)
{
ExceptionHandling.DumpExceptionToFile((Exception)e.ExceptionObject);
}
internal static string GetItemSpecModifier(string currentDirectory, string itemSpec, string modifier, ref CopyOnWriteDictionary <string, string> cachedModifiers)
{
ErrorUtilities.VerifyThrow(itemSpec != null, "Need item-spec to modify.");
ErrorUtilities.VerifyThrow(modifier != null, "Need modifier to apply to item-spec.");
string fullPath = null;
if (cachedModifiers != null)
{
cachedModifiers.TryGetValue(modifier, out fullPath);
}
if (fullPath == null)
{
bool flag = true;
try
{
if (string.Compare(modifier, "FullPath", StringComparison.OrdinalIgnoreCase) == 0)
{
if (currentDirectory == null)
{
currentDirectory = string.Empty;
}
fullPath = FileUtilities.GetFullPath(itemSpec, currentDirectory);
ThrowForUrl(fullPath, itemSpec, currentDirectory);
}
else if (string.Compare(modifier, "RootDir", StringComparison.OrdinalIgnoreCase) == 0)
{
string str2;
if (currentDirectory == null)
{
currentDirectory = string.Empty;
}
if ((cachedModifiers == null) || !cachedModifiers.TryGetValue("FullPath", out str2))
{
str2 = FileUtilities.GetFullPath(itemSpec, currentDirectory);
ThrowForUrl(str2, itemSpec, currentDirectory);
}
fullPath = Path.GetPathRoot(str2);
if (!FileUtilities.EndsWithSlash(fullPath))
{
ErrorUtilities.VerifyThrow(FileUtilitiesRegex.UNCPattern.IsMatch(fullPath), "Only UNC shares should be missing trailing slashes.");
fullPath = fullPath + Path.DirectorySeparatorChar;
}
}
else if (string.Compare(modifier, "Filename", StringComparison.OrdinalIgnoreCase) == 0)
{
if (Path.GetDirectoryName(itemSpec) == null)
{
fullPath = string.Empty;
}
else
{
fullPath = Path.GetFileNameWithoutExtension(itemSpec);
}
}
else if (string.Compare(modifier, "Extension", StringComparison.OrdinalIgnoreCase) == 0)
{
if (Path.GetDirectoryName(itemSpec) == null)
{
fullPath = string.Empty;
}
else
{
fullPath = Path.GetExtension(itemSpec);
}
}
else if (string.Compare(modifier, "RelativeDir", StringComparison.OrdinalIgnoreCase) == 0)
{
fullPath = FileUtilities.GetDirectory(itemSpec);
}
else if (string.Compare(modifier, "Directory", StringComparison.OrdinalIgnoreCase) == 0)
{
string str3;
if (currentDirectory == null)
{
currentDirectory = string.Empty;
}
if ((cachedModifiers == null) || !cachedModifiers.TryGetValue("FullPath", out str3))
{
str3 = FileUtilities.GetFullPath(itemSpec, currentDirectory);
ThrowForUrl(str3, itemSpec, currentDirectory);
}
fullPath = FileUtilities.GetDirectory(str3);
Match match = FileUtilitiesRegex.DrivePattern.Match(fullPath);
if (!match.Success)
{
match = FileUtilitiesRegex.UNCPattern.Match(fullPath);
}
if (match.Success)
{
ErrorUtilities.VerifyThrow((fullPath.Length > match.Length) && FileUtilities.IsSlash(fullPath[match.Length]), "Root directory must have a trailing slash.");
fullPath = fullPath.Substring(match.Length + 1);
}
}
else if (string.Compare(modifier, "RecursiveDir", StringComparison.OrdinalIgnoreCase) == 0)
{
fullPath = string.Empty;
}
else if (string.Compare(modifier, "Identity", StringComparison.OrdinalIgnoreCase) == 0)
{
flag = cachedModifiers != null;
fullPath = itemSpec;
}
else if (string.Compare(modifier, "ModifiedTime", StringComparison.OrdinalIgnoreCase) == 0)
{
flag = false;
FileInfo fileInfoNoThrow = FileUtilities.GetFileInfoNoThrow(EscapingUtilities.UnescapeAll(itemSpec));
if (fileInfoNoThrow != null)
{
fullPath = fileInfoNoThrow.LastWriteTime.ToString("yyyy'-'MM'-'dd HH':'mm':'ss'.'fffffff", null);
}
else
{
fullPath = string.Empty;
}
}
else if (string.Compare(modifier, "CreatedTime", StringComparison.OrdinalIgnoreCase) == 0)
{
flag = false;
string path = EscapingUtilities.UnescapeAll(itemSpec);
if (File.Exists(path))
{
fullPath = File.GetCreationTime(path).ToString("yyyy'-'MM'-'dd HH':'mm':'ss'.'fffffff", null);
}
else
{
fullPath = string.Empty;
}
}
else if (string.Compare(modifier, "AccessedTime", StringComparison.OrdinalIgnoreCase) == 0)
{
flag = false;
string str6 = EscapingUtilities.UnescapeAll(itemSpec);
if (File.Exists(str6))
{
fullPath = File.GetLastAccessTime(str6).ToString("yyyy'-'MM'-'dd HH':'mm':'ss'.'fffffff", null);
}
else
{
fullPath = string.Empty;
}
}
else
{
ErrorUtilities.VerifyThrow(false, "\"{0}\" is not a valid item-spec modifier.", modifier);
}
}
catch (Exception exception)
{
if (ExceptionHandling.NotExpectedException(exception))
{
throw;
}
ErrorUtilities.VerifyThrowInvalidOperation(false, "Shared.InvalidFilespecForTransform", modifier, itemSpec, exception.Message);
}
ErrorUtilities.VerifyThrow(fullPath != null, "The item-spec modifier \"{0}\" was not evaluated.", modifier);
if (flag)
{
if (cachedModifiers == null)
{
cachedModifiers = new CopyOnWriteDictionary <string, string>(StringComparer.OrdinalIgnoreCase);
}
cachedModifiers[modifier] = fullPath;
}
}
return(fullPath);
}
