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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
// OWNER OR 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.
package com.google.protobuf;
import java.io.IOException;
/**
* Thrown when a protocol message being parsed is invalid in some way. For instance,
* it contains a malformed varint or a negative byte length.
*
* @author [email protected] Kenton Varda
*/
public class InvalidProtocolBufferException extends IOException {
private static final long serialVersionUID = -1616151763072450476L;
private MessageLite unfinishedMessage = null;
private boolean wasThrownFromInputStream;
public InvalidProtocolBufferException(String description) {
super(description);
}
public InvalidProtocolBufferException(Exception e) {
super(e.getMessage(), e);
}
public InvalidProtocolBufferException(String description, Exception e) {
super(description, e);
}
public InvalidProtocolBufferException(IOException e) {
super(e.getMessage(), e);
}
public InvalidProtocolBufferException(String description, IOException e) {
super(description, e);
}
/**
* Attaches an unfinished message to the exception to support best-effort parsing in {@code
* Parser} interface.
*
* @return this
*/
public InvalidProtocolBufferException setUnfinishedMessage(MessageLite unfinishedMessage) {
this.unfinishedMessage = unfinishedMessage;
return this;
}
/**
* Returns the unfinished message attached to the exception, or null if no message is attached.
*/
public MessageLite getUnfinishedMessage() {
return unfinishedMessage;
}
/** Set by CodedInputStream */
void setThrownFromInputStream() {
/* This write can be racy if the same exception is stored and then thrown by multiple custom
* InputStreams on different threads. But since it only ever moves from false->true, there's no
* problem. A thread checking this condition after catching this exception from a delegate
* stream of CodedInputStream is guaranteed to always observe true, because a write on the same
* thread set the value when the exception left the delegate. A thread checking the same
* condition with an exception created by CodedInputStream is guaranteed to always see false,
* because the exception has not been exposed to any code that could publish it to other threads
* and cause a write.
*/
wasThrownFromInputStream = true;
}
/**
* Allows code catching IOException from CodedInputStream to tell whether this instance was thrown
* by a delegate InputStream, rather than directly by a parse failure.
*/
boolean getThrownFromInputStream() {
return wasThrownFromInputStream;
}
/**
* Unwraps the underlying {@link IOException} if this exception was caused by an I/O problem.
* Otherwise, returns {@code this}.
*/
public IOException unwrapIOException() {
return getCause() instanceof IOException ? (IOException) getCause() : this;
}
static InvalidProtocolBufferException truncatedMessage() {
return new InvalidProtocolBufferException(
"While parsing a protocol message, the input ended unexpectedly "
+ "in the middle of a field. This could mean either that the "
+ "input has been truncated or that an embedded message "
+ "misreported its own length.");
}
static InvalidProtocolBufferException negativeSize() {
return new InvalidProtocolBufferException(
"CodedInputStream encountered an embedded string or message "
+ "which claimed to have negative size.");
}
static InvalidProtocolBufferException malformedVarint() {
return new InvalidProtocolBufferException("CodedInputStream encountered a malformed varint.");
}
static InvalidProtocolBufferException invalidTag() {
return new InvalidProtocolBufferException("Protocol message contained an invalid tag (zero).");
}
static InvalidProtocolBufferException invalidEndTag() {
return new InvalidProtocolBufferException(
"Protocol message end-group tag did not match expected tag.");
}
static InvalidWireTypeException invalidWireType() {
return new InvalidWireTypeException("Protocol message tag had invalid wire type.");
}
/** Exception indicating that an unexpected wire type was encountered for a field. */
@ExperimentalApi
public static class InvalidWireTypeException extends InvalidProtocolBufferException {
private static final long serialVersionUID = 3283890091615336259L;
public InvalidWireTypeException(String description) {
super(description);
}
}
static InvalidProtocolBufferException recursionLimitExceeded() {
return new InvalidProtocolBufferException(
"Protocol message had too many levels of nesting. May be malicious. "
+ "Use CodedInputStream.setRecursionLimit() to increase the depth limit.");
}
static InvalidProtocolBufferException sizeLimitExceeded() {
return new InvalidProtocolBufferException(
"Protocol message was too large. May be malicious. "
+ "Use CodedInputStream.setSizeLimit() to increase the size limit.");
}
static InvalidProtocolBufferException parseFailure() {
return new InvalidProtocolBufferException("Failed to parse the message.");
}
static InvalidProtocolBufferException invalidUtf8() {
return new InvalidProtocolBufferException("Protocol message had invalid UTF-8.");
}
}
