public void switchTo(State state) {
Log.info("Changing game state to [" + state + "] from [" + current + "]");
game.updateLimiter.changedState();
game.enterState(state.ordinal(), new FadeOutTransition(), new FadeInTransition());
ScreenState last = (ScreenState) game.getState(current.ordinal());
ScreenState next = (ScreenState) game.getState(state.ordinal());
if (state == State.GAME) {
((GameState) next).start();
} else if (current == State.GAME) {
((GameState) last).close();
}
current = state;
}
/* ------------------------------------------------------------------------------- */
private byte next(ByteBuffer buffer) {
byte ch = buffer.get();
if (_cr) {
if (ch != HttpTokens.LINE_FEED) throw new BadMessage("Bad EOL");
_cr = false;
return ch;
}
if (ch >= 0 && ch < HttpTokens.SPACE) {
if (ch == HttpTokens.CARRIAGE_RETURN) {
if (buffer.hasRemaining()) {
if (_maxHeaderBytes > 0 && _state.ordinal() < State.END.ordinal()) _headerBytes++;
ch = buffer.get();
if (ch != HttpTokens.LINE_FEED) throw new BadMessage("Bad EOL");
} else {
_cr = true;
// Can return 0 here to indicate the need for more characters,
// because a real 0 in the buffer would cause a BadMessage below
return 0;
}
}
// Only LF or TAB acceptable special characters
else if (!(ch == HttpTokens.LINE_FEED || ch == HttpTokens.TAB))
throw new BadMessage("Illegal character");
}
return ch;
}
private byte next(ByteBuffer buffer) {
byte ch = buffer.get();
CharState s = __charState[0xff & ch];
switch (s) {
case ILLEGAL:
throw new IllegalCharacterException(_state, ch, buffer);
case LF:
_cr = false;
break;
case CR:
if (_cr) throw new BadMessageException("Bad EOL");
_cr = true;
if (buffer.hasRemaining()) {
if (_maxHeaderBytes > 0 && _state.ordinal() < State.END.ordinal()) _headerBytes++;
return next(buffer);
}
// Can return 0 here to indicate the need for more characters,
// because a real 0 in the buffer would cause a BadMessage below
return 0;
case LEGAL:
if (_cr) throw new BadMessageException("Bad EOL");
}
return ch;
}
@Override
protected void onPrepare() {
width = cs.getWidth();
height = cs.getHeight();
state = State.RIGHT;
ordinal = state.ordinal();
controler = new Point(0, 0, null);
point = new Point(controler.w, controler.h, null);
}
private static int driver()
// This is the driver of the FA.
// If a valid token is found, assigns it to "t" and returns 1.
// If an invalid token is found, assigns it to "t" and returns 0.
// If end-of-stream is reached without finding any non-whitespace character, returns -1.
{
State nextSt; // the next state of the FA
t = "";
state = State.Start;
if (Character.isWhitespace((char) a)) a = getChar(); // get the next non-whitespace character
if (a == -1) // end-of-stream is reached
return -1;
while (a != -1) // do the body if "a" is not end-of-stream
{
c = (char) a;
nextSt = nextState[state.ordinal()][a];
if (nextSt == State.UNDEF) // The FA will halt.
{
if (isFinal(state)) return 1; // valid token extracted
else // "c" is an unexpected character
{
t = t + c;
a = getNextChar();
return 0; // invalid token found
}
} else // The FA will go on.
{
state = nextSt;
t = t + c;
a = getNextChar();
}
}
// end-of-stream is reached while a token is being extracted
if (isFinal(state)) return 1; // valid token extracted
else return 0; // invalid token found
} // end driver
/**
* Parse until next Event.
*
* @return True if an {@link RequestHandler} method was called and it returned true;
*/
public boolean parseNext(ByteBuffer buffer) {
if (DEBUG) LOG.debug("parseNext s={} {}", _state, BufferUtil.toDetailString(buffer));
try {
boolean handle = false;
// Start a request/response
if (_state == State.START) {
_version = null;
_method = null;
_methodString = null;
_endOfContent = EndOfContent.UNKNOWN_CONTENT;
_header = null;
handle = quickStart(buffer);
}
// Request/response line
if (!handle
&& _state.ordinal() >= State.START.ordinal()
&& _state.ordinal() < State.HEADER.ordinal()) handle = parseLine(buffer);
// parse headers
if (!handle
&& _state.ordinal() >= State.HEADER.ordinal()
&& _state.ordinal() < State.CONTENT.ordinal()) handle = parseHeaders(buffer);
// parse content
if (!handle
&& _state.ordinal() >= State.CONTENT.ordinal()
&& _state.ordinal() < State.END.ordinal()) {
// Handle HEAD response
if (_responseStatus > 0 && _headResponse) {
setState(State.END);
handle = _handler.messageComplete();
} else handle = parseContent(buffer);
}
// handle end states
if (_state == State.END) {
// eat white space
while (buffer.remaining() > 0 && buffer.get(buffer.position()) <= HttpTokens.SPACE)
buffer.get();
} else if (_state == State.CLOSED) {
if (BufferUtil.hasContent(buffer)) {
// Just ignore data when closed
_headerBytes += buffer.remaining();
BufferUtil.clear(buffer);
if (_headerBytes > _maxHeaderBytes) {
// Don't want to waste time reading data of a closed request
throw new IllegalStateException("too much data after closed");
}
}
}
// Handle EOF
if (_eof && !buffer.hasRemaining()) {
switch (_state) {
case CLOSED:
break;
case START:
_handler.earlyEOF();
setState(State.CLOSED);
break;
case END:
setState(State.CLOSED);
break;
case EOF_CONTENT:
handle = _handler.messageComplete() || handle;
setState(State.CLOSED);
break;
case CONTENT:
case CHUNKED_CONTENT:
case CHUNK_SIZE:
case CHUNK_PARAMS:
case CHUNK:
_handler.earlyEOF();
setState(State.CLOSED);
break;
default:
if (DEBUG) LOG.debug("{} EOF in {}", this, _state);
_handler.badMessage(400, null);
setState(State.CLOSED);
break;
}
}
return handle;
} catch (BadMessage e) {
BufferUtil.clear(buffer);
LOG.warn(
"badMessage: "
+ e._code
+ (e._message != null ? " " + e._message : "")
+ " for "
+ _handler);
if (DEBUG) LOG.debug(e);
setState(State.CLOSED);
_handler.badMessage(e._code, e._message);
return false;
} catch (Exception e) {
BufferUtil.clear(buffer);
LOG.warn("badMessage: " + e.toString() + " for " + _handler);
if (DEBUG) LOG.debug(e);
if (_state.ordinal() <= State.END.ordinal()) {
setState(State.CLOSED);
_handler.badMessage(400, null);
} else {
_handler.earlyEOF();
setState(State.CLOSED);
}
return false;
}
}
private synchronized void setState(State state, Throwable error) {
this.state = state;
handler.obtainMessage(MESSAGE_STATE_CHANGE, state.ordinal(), 0, error).sendToTarget();
}
/*
* Parse the message headers and return true if the handler has signaled for a return
*/
protected boolean parseHeaders(ByteBuffer buffer) {
boolean handle = false;
// Process headers
while (_state.ordinal() < State.CONTENT.ordinal() && buffer.hasRemaining() && !handle) {
// process each character
byte ch = next(buffer);
if (ch == 0) break;
if (_maxHeaderBytes > 0 && ++_headerBytes > _maxHeaderBytes) {
LOG.warn("Header is too large >" + _maxHeaderBytes);
throw new BadMessage(HttpStatus.REQUEST_ENTITY_TOO_LARGE_413);
}
switch (_state) {
case HEADER:
switch (ch) {
case HttpTokens.COLON:
case HttpTokens.SPACE:
case HttpTokens.TAB:
{
// header value without name - continuation?
if (_valueString == null) {
_string.setLength(0);
_length = 0;
} else {
setString(_valueString);
_string.append(' ');
_length++;
_valueString = null;
}
setState(State.HEADER_VALUE);
break;
}
default:
{
// handler last header if any. Delayed to here just in case there was a
// continuation line (above)
if (_headerString != null || _valueString != null) {
// Handle known headers
if (_header != null && handleKnownHeaders(buffer)) {
_headerString = _valueString = null;
_header = null;
_value = null;
_field = null;
return true;
}
handle =
_handler.parsedHeader(
_field != null
? _field
: new HttpField(_header, _headerString, _valueString))
|| handle;
}
_headerString = _valueString = null;
_header = null;
_value = null;
_field = null;
// now handle the ch
if (ch == HttpTokens.LINE_FEED) {
_contentPosition = 0;
// End of headers!
// Was there a required host header?
if (!_host && _version != HttpVersion.HTTP_1_0 && _requestHandler != null) {
throw new BadMessage(HttpStatus.BAD_REQUEST_400, "No Host");
}
// is it a response that cannot have a body?
if (_responseHandler != null
&& // response
(_responseStatus == 304
|| // not-modified response
_responseStatus == 204
|| // no-content response
_responseStatus < 200)) // 1xx response
_endOfContent = EndOfContent.NO_CONTENT; // ignore any other headers set
// else if we don't know framing
else if (_endOfContent == EndOfContent.UNKNOWN_CONTENT) {
if (_responseStatus == 0 // request
|| _responseStatus == 304 // not-modified response
|| _responseStatus == 204 // no-content response
|| _responseStatus < 200) // 1xx response
_endOfContent = EndOfContent.NO_CONTENT;
else _endOfContent = EndOfContent.EOF_CONTENT;
}
// How is the message ended?
switch (_endOfContent) {
case EOF_CONTENT:
setState(State.EOF_CONTENT);
handle = _handler.headerComplete() || handle;
break;
case CHUNKED_CONTENT:
setState(State.CHUNKED_CONTENT);
handle = _handler.headerComplete() || handle;
break;
case NO_CONTENT:
handle = _handler.headerComplete() || handle;
setState(State.END);
handle = _handler.messageComplete() || handle;
break;
default:
setState(State.CONTENT);
handle = _handler.headerComplete() || handle;
break;
}
} else if (ch <= HttpTokens.SPACE) throw new BadMessage();
else {
if (buffer.hasRemaining()) {
// Try a look ahead for the known header name and value.
HttpField field =
_connectionFields == null
? null
: _connectionFields.getBest(buffer, -1, buffer.remaining());
if (field == null) field = CACHE.getBest(buffer, -1, buffer.remaining());
if (field != null) {
final String n;
final String v;
if (_strict) {
// Have to get the fields exactly from the buffer to match case
String fn = field.getName();
String fv = field.getValue();
n =
BufferUtil.toString(
buffer,
buffer.position() - 1,
fn.length(),
StandardCharsets.US_ASCII);
if (fv == null) v = null;
else {
v =
BufferUtil.toString(
buffer,
buffer.position() + fn.length() + 1,
fv.length(),
StandardCharsets.ISO_8859_1);
field = new HttpField(field.getHeader(), n, v);
}
} else {
n = field.getName();
v = field.getValue();
}
_header = field.getHeader();
_headerString = n;
if (v == null) {
// Header only
setState(State.HEADER_VALUE);
_string.setLength(0);
_length = 0;
buffer.position(buffer.position() + n.length() + 1);
break;
} else {
// Header and value
int pos = buffer.position() + n.length() + v.length() + 1;
byte b = buffer.get(pos);
if (b == HttpTokens.CARRIAGE_RETURN || b == HttpTokens.LINE_FEED) {
_field = field;
_valueString = v;
setState(State.HEADER_IN_VALUE);
if (b == HttpTokens.CARRIAGE_RETURN) {
_cr = true;
buffer.position(pos + 1);
} else buffer.position(pos);
break;
} else {
setState(State.HEADER_IN_VALUE);
setString(v);
buffer.position(pos);
break;
}
}
}
}
// New header
setState(State.HEADER_IN_NAME);
_string.setLength(0);
_string.append((char) ch);
_length = 1;
}
}
}
break;
case HEADER_IN_NAME:
if (ch == HttpTokens.COLON || ch == HttpTokens.LINE_FEED) {
if (_headerString == null) {
_headerString = takeString();
_header = HttpHeader.CACHE.get(_headerString);
}
_length = -1;
setState(ch == HttpTokens.LINE_FEED ? State.HEADER : State.HEADER_VALUE);
break;
}
if (ch >= HttpTokens.SPACE || ch == HttpTokens.TAB) {
if (_header != null) {
setString(_header.asString());
_header = null;
_headerString = null;
}
_string.append((char) ch);
if (ch > HttpTokens.SPACE) _length = _string.length();
break;
}
throw new BadMessage("Illegal character");
case HEADER_VALUE:
if (ch > HttpTokens.SPACE || ch < 0) {
_string.append((char) (0xff & ch));
_length = _string.length();
setState(State.HEADER_IN_VALUE);
break;
}
if (ch == HttpTokens.SPACE || ch == HttpTokens.TAB) break;
if (ch == HttpTokens.LINE_FEED) {
if (_length > 0) {
_value = null;
_valueString =
(_valueString == null) ? takeString() : (_valueString + " " + takeString());
}
setState(State.HEADER);
break;
}
throw new BadMessage("Illegal character");
case HEADER_IN_VALUE:
if (ch >= HttpTokens.SPACE || ch < 0) {
if (_valueString != null) {
setString(_valueString);
_valueString = null;
_field = null;
}
_string.append((char) (0xff & ch));
if (ch > HttpTokens.SPACE || ch < 0) _length = _string.length();
break;
}
if (ch == HttpTokens.LINE_FEED) {
if (_length > 0) {
_value = null;
_valueString = takeString();
_length = -1;
}
setState(State.HEADER);
break;
}
throw new BadMessage("Illegal character");
default:
throw new IllegalStateException(_state.toString());
}
}
return handle;
}
/* Parse a request or response line
*/
private boolean parseLine(ByteBuffer buffer) {
boolean handle = false;
// Process headers
while (_state.ordinal() < State.HEADER.ordinal() && buffer.hasRemaining() && !handle) {
// process each character
byte ch = next(buffer);
if (ch == 0) break;
if (_maxHeaderBytes > 0 && ++_headerBytes > _maxHeaderBytes) {
if (_state == State.URI) {
LOG.warn("URI is too large >" + _maxHeaderBytes);
throw new BadMessage(HttpStatus.REQUEST_URI_TOO_LONG_414);
} else {
if (_requestHandler != null) LOG.warn("request is too large >" + _maxHeaderBytes);
else LOG.warn("response is too large >" + _maxHeaderBytes);
throw new BadMessage(HttpStatus.REQUEST_ENTITY_TOO_LARGE_413);
}
}
switch (_state) {
case METHOD:
if (ch == HttpTokens.SPACE) {
_length = _string.length();
_methodString = takeString();
HttpMethod method = HttpMethod.CACHE.get(_methodString);
if (method != null && !_strict) _methodString = method.asString();
setState(State.SPACE1);
} else if (ch < HttpTokens.SPACE)
throw new BadMessage(ch < 0 ? "Illegal character" : "No URI");
else _string.append((char) ch);
break;
case RESPONSE_VERSION:
if (ch == HttpTokens.SPACE) {
_length = _string.length();
String version = takeString();
_version = HttpVersion.CACHE.get(version);
if (_version == null)
throw new BadMessage(HttpStatus.BAD_REQUEST_400, "Unknown Version");
setState(State.SPACE1);
} else if (ch < HttpTokens.SPACE)
throw new BadMessage(ch < 0 ? "Illegal character" : "No Status");
else _string.append((char) ch);
break;
case SPACE1:
if (ch > HttpTokens.SPACE || ch < 0) {
if (_responseHandler != null) {
setState(State.STATUS);
setResponseStatus(ch - '0');
} else {
_uri.clear();
setState(State.URI);
// quick scan for space or EoBuffer
if (buffer.hasArray()) {
byte[] array = buffer.array();
int p = buffer.arrayOffset() + buffer.position();
int l = buffer.arrayOffset() + buffer.limit();
int i = p;
while (i < l && array[i] > HttpTokens.SPACE) i++;
int len = i - p;
_headerBytes += len;
if (_maxHeaderBytes > 0 && ++_headerBytes > _maxHeaderBytes) {
LOG.warn("URI is too large >" + _maxHeaderBytes);
throw new BadMessage(HttpStatus.REQUEST_URI_TOO_LONG_414);
}
if (_uri.remaining() <= len) {
ByteBuffer uri = ByteBuffer.allocate(_uri.capacity() + 2 * len);
_uri.flip();
uri.put(_uri);
_uri = uri;
}
_uri.put(array, p - 1, len + 1);
buffer.position(i - buffer.arrayOffset());
} else _uri.put(ch);
}
} else if (ch < HttpTokens.SPACE) {
throw new BadMessage(
HttpStatus.BAD_REQUEST_400, _requestHandler != null ? "No URI" : "No Status");
}
break;
case STATUS:
if (ch == HttpTokens.SPACE) {
setState(State.SPACE2);
} else if (ch >= '0' && ch <= '9') {
_responseStatus = _responseStatus * 10 + (ch - '0');
} else if (ch < HttpTokens.SPACE && ch >= 0) {
handle = _responseHandler.startResponse(_version, _responseStatus, null) || handle;
setState(State.HEADER);
} else {
throw new BadMessage();
}
break;
case URI:
if (ch == HttpTokens.SPACE) {
setState(State.SPACE2);
} else if (ch < HttpTokens.SPACE && ch >= 0) {
// HTTP/0.9
_uri.flip();
handle = _requestHandler.startRequest(_method, _methodString, _uri, null) || handle;
setState(State.END);
BufferUtil.clear(buffer);
handle = _handler.headerComplete() || handle;
handle = _handler.messageComplete() || handle;
} else {
if (!_uri.hasRemaining()) {
ByteBuffer uri = ByteBuffer.allocate(_uri.capacity() * 2);
_uri.flip();
uri.put(_uri);
_uri = uri;
}
_uri.put(ch);
}
break;
case SPACE2:
if (ch > HttpTokens.SPACE) {
_string.setLength(0);
_string.append((char) ch);
if (_responseHandler != null) {
_length = 1;
setState(State.REASON);
} else {
setState(State.REQUEST_VERSION);
// try quick look ahead for HTTP Version
HttpVersion version;
if (buffer.position() > 0 && buffer.hasArray())
version =
HttpVersion.lookAheadGet(
buffer.array(),
buffer.arrayOffset() + buffer.position() - 1,
buffer.arrayOffset() + buffer.limit());
else version = HttpVersion.CACHE.getBest(buffer, 0, buffer.remaining());
if (version != null) {
int pos = buffer.position() + version.asString().length() - 1;
if (pos < buffer.limit()) {
byte n = buffer.get(pos);
if (n == HttpTokens.CARRIAGE_RETURN) {
_cr = true;
_version = version;
_string.setLength(0);
buffer.position(pos + 1);
} else if (n == HttpTokens.LINE_FEED) {
_version = version;
_string.setLength(0);
buffer.position(pos);
}
}
}
}
} else if (ch == HttpTokens.LINE_FEED) {
if (_responseHandler != null) {
handle = _responseHandler.startResponse(_version, _responseStatus, null) || handle;
setState(State.HEADER);
} else {
// HTTP/0.9
_uri.flip();
handle = _requestHandler.startRequest(_method, _methodString, _uri, null) || handle;
setState(State.END);
BufferUtil.clear(buffer);
handle = _handler.headerComplete() || handle;
handle = _handler.messageComplete() || handle;
}
} else if (ch < 0) throw new BadMessage();
break;
case REQUEST_VERSION:
if (ch == HttpTokens.LINE_FEED) {
if (_version == null) {
_length = _string.length();
_version = HttpVersion.CACHE.get(takeString());
}
if (_version == null)
throw new BadMessage(HttpStatus.BAD_REQUEST_400, "Unknown Version");
// Should we try to cache header fields?
if (_connectionFields == null
&& _version.getVersion() >= HttpVersion.HTTP_1_1.getVersion()) {
int header_cache = _handler.getHeaderCacheSize();
if (header_cache > 0) _connectionFields = new ArrayTernaryTrie<>(header_cache);
}
setState(State.HEADER);
_uri.flip();
handle = _requestHandler.startRequest(_method, _methodString, _uri, _version) || handle;
continue;
} else if (ch >= HttpTokens.SPACE) _string.append((char) ch);
else throw new BadMessage();
break;
case REASON:
if (ch == HttpTokens.LINE_FEED) {
String reason = takeString();
setState(State.HEADER);
handle = _responseHandler.startResponse(_version, _responseStatus, reason) || handle;
continue;
} else if (ch >= HttpTokens.SPACE) {
_string.append((char) ch);
if (ch != ' ' && ch != '\t') _length = _string.length();
} else throw new BadMessage();
break;
default:
throw new IllegalStateException(_state.toString());
}
}
return handle;
}
private State transition(Typechar c) {
return table_f[current_state.ordinal()][c.ordinal()];
}
public static PacketType findOldPacket(State state, Direction direction, int id) {
return oldids.get(toShort((short) id, (short) direction.ordinal(), (short) state.ordinal()));
}
// Inclusive
public boolean isBetween(final State min, final State max) {
final int ord = ordinal();
return ord >= min.ordinal() && ord <= max.ordinal();
}
public boolean isAtLeast(final State other) {
return ordinal() >= other.ordinal();
}
private boolean processCharacter(Event event) {
int ordinal = transition[state.ordinal()][event.ordinal()];
state = State.values()[ordinal];
return state != State.INVALID;
}
private boolean is_final_state(State s) {
return s.ordinal() > State.SFINAL.ordinal();
}
protected boolean parseContent(ByteBuffer buffer) {
int remaining = buffer.remaining();
if (remaining == 0 && _state == State.CONTENT) {
long content = _contentLength - _contentPosition;
if (content == 0) {
setState(State.END);
return _handler.messageComplete();
}
}
// Handle _content
byte ch;
while (_state.ordinal() < State.END.ordinal() && remaining > 0) {
switch (_state) {
case EOF_CONTENT:
_contentChunk = buffer.asReadOnlyBuffer();
_contentPosition += remaining;
buffer.position(buffer.position() + remaining);
if (_handler.content(_contentChunk)) return true;
break;
case CONTENT:
{
long content = _contentLength - _contentPosition;
if (content == 0) {
setState(State.END);
return _handler.messageComplete();
} else {
_contentChunk = buffer.asReadOnlyBuffer();
// limit content by expected size
if (remaining > content) {
// We can cast remaining to an int as we know that it is
// smaller than
// or equal to length which is already an int.
_contentChunk.limit(_contentChunk.position() + (int) content);
}
_contentPosition += _contentChunk.remaining();
buffer.position(buffer.position() + _contentChunk.remaining());
if (_handler.content(_contentChunk)) return true;
if (_contentPosition == _contentLength) {
setState(State.END);
return _handler.messageComplete();
}
}
break;
}
case CHUNKED_CONTENT:
{
ch = next(buffer);
if (ch > HttpTokens.SPACE) {
_chunkLength = TypeUtils.convertHexDigit(ch);
_chunkPosition = 0;
setState(State.CHUNK_SIZE);
}
break;
}
case CHUNK_SIZE:
{
ch = next(buffer);
if (ch == 0) break;
if (ch == HttpTokens.LINE_FEED) {
if (_chunkLength == 0) setState(State.CHUNK_END);
else setState(State.CHUNK);
} else if (ch <= HttpTokens.SPACE || ch == HttpTokens.SEMI_COLON)
setState(State.CHUNK_PARAMS);
else _chunkLength = _chunkLength * 16 + TypeUtils.convertHexDigit(ch);
break;
}
case CHUNK_PARAMS:
{
ch = next(buffer);
if (ch == HttpTokens.LINE_FEED) {
if (_chunkLength == 0) setState(State.CHUNK_END);
else setState(State.CHUNK);
}
break;
}
case CHUNK:
{
int chunk = _chunkLength - _chunkPosition;
if (chunk == 0) {
setState(State.CHUNKED_CONTENT);
} else {
_contentChunk = buffer.asReadOnlyBuffer();
if (remaining > chunk) _contentChunk.limit(_contentChunk.position() + chunk);
chunk = _contentChunk.remaining();
_contentPosition += chunk;
_chunkPosition += chunk;
buffer.position(buffer.position() + chunk);
if (_handler.content(_contentChunk)) return true;
}
break;
}
case CHUNK_END:
{
// TODO handle chunk trailer
ch = next(buffer);
if (ch == 0) break;
if (ch == HttpTokens.LINE_FEED) {
setState(State.END);
return _handler.messageComplete();
}
throw new IllegalCharacterException(_state, ch, buffer);
}
case CLOSED:
{
BufferUtils.clear(buffer);
return false;
}
default:
break;
}
remaining = buffer.remaining();
}
return false;
}
/**
* Parse until next Event.
*
* @param buffer the buffer to parse
* @return True if an {@link RequestHandler} method was called and it returned true;
*/
public boolean parseNext(ByteBuffer buffer) {
if (DEBUG) log.debug("parseNext s={} {}", _state, BufferUtils.toDetailString(buffer));
try {
// Start a request/response
if (_state == State.START) {
_version = null;
_method = null;
_methodString = null;
_endOfContent = EndOfContent.UNKNOWN_CONTENT;
_header = null;
if (quickStart(buffer)) return true;
}
// Request/response line
if (_state.ordinal() >= State.START.ordinal() && _state.ordinal() < State.HEADER.ordinal()) {
if (parseLine(buffer)) return true;
}
// parse headers
if (_state.ordinal() >= State.HEADER.ordinal()
&& _state.ordinal() < State.CONTENT.ordinal()) {
if (parseHeaders(buffer)) return true;
}
// parse content
if (_state.ordinal() >= State.CONTENT.ordinal() && _state.ordinal() < State.END.ordinal()) {
// Handle HEAD response
if (_responseStatus > 0 && _headResponse) {
setState(State.END);
return _handler.messageComplete();
} else {
if (parseContent(buffer)) return true;
}
}
// handle end states
if (_state == State.END) {
// eat white space
while (buffer.remaining() > 0 && buffer.get(buffer.position()) <= HttpTokens.SPACE)
buffer.get();
} else if (_state == State.CLOSE) {
// Seeking EOF
if (BufferUtils.hasContent(buffer)) {
// Just ignore data when closed
_headerBytes += buffer.remaining();
BufferUtils.clear(buffer);
if (_maxHeaderBytes > 0 && _headerBytes > _maxHeaderBytes) {
// Don't want to waste time reading data of a closed
// request
throw new IllegalStateException("too much data seeking EOF");
}
}
} else if (_state == State.CLOSED) {
BufferUtils.clear(buffer);
}
// Handle EOF
if (_eof && !buffer.hasRemaining()) {
switch (_state) {
case CLOSED:
break;
case START:
setState(State.CLOSED);
_handler.earlyEOF();
break;
case END:
case CLOSE:
setState(State.CLOSED);
break;
case EOF_CONTENT:
setState(State.CLOSED);
return _handler.messageComplete();
case CONTENT:
case CHUNKED_CONTENT:
case CHUNK_SIZE:
case CHUNK_PARAMS:
case CHUNK:
setState(State.CLOSED);
_handler.earlyEOF();
break;
default:
if (DEBUG) log.debug("{} EOF in {}", this, _state);
setState(State.CLOSED);
_handler.badMessage(400, null);
break;
}
}
} catch (BadMessageException e) {
BufferUtils.clear(buffer);
Throwable cause = e.getCause();
boolean stack =
log.isDebugEnable()
|| (!(cause instanceof NumberFormatException)
&& (cause instanceof RuntimeException || cause instanceof Error));
if (stack)
log.warn(
"bad HTTP parsed: "
+ e._code
+ (e.getReason() != null ? " " + e.getReason() : "")
+ " for "
+ _handler,
e);
else
log.warn(
"bad HTTP parsed: "
+ e._code
+ (e.getReason() != null ? " " + e.getReason() : "")
+ " for "
+ _handler);
setState(State.CLOSE);
_handler.badMessage(e.getCode(), e.getReason());
} catch (NumberFormatException | IllegalStateException e) {
BufferUtils.clear(buffer);
log.warn("parse exception: {} in {} for {}", e.toString(), _state, _handler);
if (DEBUG) log.debug("parse exception", e);
switch (_state) {
case CLOSED:
break;
case CLOSE:
_handler.earlyEOF();
break;
default:
setState(State.CLOSE);
_handler.badMessage(400, null);
}
} catch (Exception | Error e) {
BufferUtils.clear(buffer);
log.warn("parse exception: " + e.toString() + " for " + _handler, e);
switch (_state) {
case CLOSED:
break;
case CLOSE:
_handler.earlyEOF();
break;
default:
setState(State.CLOSE);
_handler.badMessage(400, null);
}
}
return false;
}
public boolean isAtMost(final State other) {
return ordinal() <= other.ordinal();
}
protected boolean parseContent(ByteBuffer buffer) {
// Handle _content
byte ch;
while (_state.ordinal() < State.END.ordinal() && buffer.hasRemaining()) {
switch (_state) {
case EOF_CONTENT:
_contentChunk = buffer.asReadOnlyBuffer();
_contentPosition += _contentChunk.remaining();
buffer.position(buffer.position() + _contentChunk.remaining());
if (_handler.content(_contentChunk)) return true;
break;
case CONTENT:
{
long remaining = _contentLength - _contentPosition;
if (remaining == 0) {
setState(State.END);
if (_handler.messageComplete()) return true;
} else {
_contentChunk = buffer.asReadOnlyBuffer();
// limit content by expected size
if (_contentChunk.remaining() > remaining) {
// We can cast remaining to an int as we know that it is smaller than
// or equal to length which is already an int.
_contentChunk.limit(_contentChunk.position() + (int) remaining);
}
_contentPosition += _contentChunk.remaining();
buffer.position(buffer.position() + _contentChunk.remaining());
boolean handle = _handler.content(_contentChunk);
if (_contentPosition == _contentLength) {
setState(State.END);
if (_handler.messageComplete()) return true;
}
if (handle) return true;
}
break;
}
case CHUNKED_CONTENT:
{
ch = next(buffer);
if (ch > HttpTokens.SPACE) {
_chunkLength = TypeUtil.convertHexDigit(ch);
_chunkPosition = 0;
setState(State.CHUNK_SIZE);
}
break;
}
case CHUNK_SIZE:
{
ch = next(buffer);
if (ch == 0) break;
if (ch == HttpTokens.LINE_FEED) {
if (_chunkLength == 0) {
setState(State.END);
if (_handler.messageComplete()) return true;
} else setState(State.CHUNK);
} else if (ch <= HttpTokens.SPACE || ch == HttpTokens.SEMI_COLON)
setState(State.CHUNK_PARAMS);
else _chunkLength = _chunkLength * 16 + TypeUtil.convertHexDigit(ch);
break;
}
case CHUNK_PARAMS:
{
ch = next(buffer);
if (ch == HttpTokens.LINE_FEED) {
if (_chunkLength == 0) {
setState(State.END);
if (_handler.messageComplete()) return true;
} else setState(State.CHUNK);
}
break;
}
case CHUNK:
{
int remaining = _chunkLength - _chunkPosition;
if (remaining == 0) {
setState(State.CHUNKED_CONTENT);
} else {
_contentChunk = buffer.asReadOnlyBuffer();
if (_contentChunk.remaining() > remaining)
_contentChunk.limit(_contentChunk.position() + remaining);
remaining = _contentChunk.remaining();
_contentPosition += remaining;
_chunkPosition += remaining;
buffer.position(buffer.position() + remaining);
if (_handler.content(_contentChunk)) return true;
}
break;
}
case CLOSED:
{
BufferUtil.clear(buffer);
return false;
}
default:
break;
}
}
return false;
}
/* ------------------------------------------------------------ */
public boolean isCommitted() {
return _state.ordinal() >= State.COMMITTED.ordinal();
}
/* ------------------------------------------------------------------------------- */
public boolean inContentState() {
return _state.ordinal() >= State.CONTENT.ordinal() && _state.ordinal() < State.END.ordinal();
}
/**
* Closes this channel and broadcasts the highest value payment transaction on the network.
*
* <p>This will set the state to {@link State#CLOSED} if the transaction is successfully broadcast
* on the network. If we fail to broadcast for some reason, the state is set to {@link
* State#ERROR}.
*
* <p>If the current state is before {@link State#READY} (ie we have not finished initializing the
* channel), we simply set the state to {@link State#CLOSED} and let the client handle getting its
* refund transaction confirmed.
*
* @return a future which completes when the provided multisig contract successfully broadcasts,
* or throws if the broadcast fails for some reason. Note that if the network simply rejects
* the transaction, this future will never complete, a timeout should be used.
* @throws InsufficientMoneyException If the payment tx would have cost more in fees to spend than
* it is worth.
*/
public synchronized ListenableFuture<Transaction> close() throws InsufficientMoneyException {
if (storedServerChannel != null) {
StoredServerChannel temp = storedServerChannel;
storedServerChannel = null;
StoredPaymentChannelServerStates channels =
(StoredPaymentChannelServerStates)
wallet.getExtensions().get(StoredPaymentChannelServerStates.EXTENSION_ID);
channels.closeChannel(
temp); // May call this method again for us (if it wasn't the original caller)
if (state.compareTo(State.CLOSING) >= 0) return closedFuture;
}
if (state.ordinal() < State.READY.ordinal()) {
log.error("Attempt to settle channel in state " + state);
state = State.CLOSED;
closedFuture.set(null);
return closedFuture;
}
if (state != State.READY) {
// TODO: What is this codepath for?
log.warn("Failed attempt to settle a channel in state " + state);
return closedFuture;
}
Transaction tx = null;
try {
Wallet.SendRequest req = makeUnsignedChannelContract(bestValueToMe);
tx = req.tx;
// Provide a throwaway signature so that completeTx won't complain out about unsigned inputs
// it doesn't
// know how to sign. Note that this signature does actually have to be valid, so we can't use
// a dummy
// signature to save time, because otherwise completeTx will try to re-sign it to make it
// valid and then
// die. We could probably add features to the SendRequest API to make this a bit more
// efficient.
signMultisigInput(tx, Transaction.SigHash.NONE, true);
// Let wallet handle adding additional inputs/fee as necessary.
req.shuffleOutputs = false;
req.missingSigsMode = Wallet.MissingSigsMode.USE_DUMMY_SIG;
wallet.completeTx(req); // TODO: Fix things so shuffling is usable.
feePaidForPayment = req.tx.getFee();
log.info("Calculated fee is {}", feePaidForPayment);
if (feePaidForPayment.compareTo(bestValueToMe) > 0) {
final String msg =
String.format(
Locale.US,
"Had to pay more in fees (%s) than the channel was worth (%s)",
feePaidForPayment,
bestValueToMe);
throw new InsufficientMoneyException(feePaidForPayment.subtract(bestValueToMe), msg);
}
// Now really sign the multisig input.
signMultisigInput(tx, Transaction.SigHash.ALL, false);
// Some checks that shouldn't be necessary but it can't hurt to check.
tx.verify(); // Sanity check syntax.
for (TransactionInput input : tx.getInputs())
input.verify(); // Run scripts and ensure it is valid.
} catch (InsufficientMoneyException e) {
throw e; // Don't fall through.
} catch (Exception e) {
log.error(
"Could not verify self-built tx\nMULTISIG {}\nCLOSE {}",
multisigContract,
tx != null ? tx : "");
throw new RuntimeException(e); // Should never happen.
}
state = State.CLOSING;
log.info("Closing channel, broadcasting tx {}", tx);
// The act of broadcasting the transaction will add it to the wallet.
ListenableFuture<Transaction> future = broadcaster.broadcastTransaction(tx).future();
Futures.addCallback(
future,
new FutureCallback<Transaction>() {
@Override
public void onSuccess(Transaction transaction) {
log.info("TX {} propagated, channel successfully closed.", transaction.getHash());
state = State.CLOSED;
closedFuture.set(transaction);
}
@Override
public void onFailure(Throwable throwable) {
log.error("Failed to settle channel, could not broadcast", throwable);
state = State.ERROR;
closedFuture.setException(throwable);
}
});
return closedFuture;
}
/* ------------------------------------------------------------------------------- */
public boolean inHeaderState() {
return _state.ordinal() < State.CONTENT.ordinal();
}
