private boolean handleKnownHeaders(ByteBuffer buffer) {
boolean add_to_connection_trie = false;
switch (_header) {
case CONTENT_LENGTH:
if (_endOfContent != EndOfContent.CHUNKED_CONTENT) {
try {
_contentLength = Long.parseLong(_valueString);
} catch (NumberFormatException e) {
LOG.ignore(e);
throw new BadMessage(HttpStatus.BAD_REQUEST_400, "Bad Content-Length");
}
if (_contentLength <= 0) _endOfContent = EndOfContent.NO_CONTENT;
else _endOfContent = EndOfContent.CONTENT_LENGTH;
}
break;
case TRANSFER_ENCODING:
if (_value == HttpHeaderValue.CHUNKED) _endOfContent = EndOfContent.CHUNKED_CONTENT;
else {
if (_valueString.endsWith(HttpHeaderValue.CHUNKED.toString()))
_endOfContent = EndOfContent.CHUNKED_CONTENT;
else if (_valueString.indexOf(HttpHeaderValue.CHUNKED.toString()) >= 0) {
throw new BadMessage(HttpStatus.BAD_REQUEST_400, "Bad chunking");
}
}
break;
case HOST:
add_to_connection_trie = _connectionFields != null && _field == null;
_host = true;
String host = _valueString;
int port = 0;
if (host == null || host.length() == 0) {
throw new BadMessage(HttpStatus.BAD_REQUEST_400, "Bad Host header");
}
int len = host.length();
loop:
for (int i = len; i-- > 0; ) {
char c2 = (char) (0xff & host.charAt(i));
switch (c2) {
case ']':
break loop;
case ':':
try {
len = i;
port = StringUtil.toInt(host.substring(i + 1));
} catch (NumberFormatException e) {
if (DEBUG) LOG.debug(e);
throw new BadMessage(HttpStatus.BAD_REQUEST_400, "Bad Host header");
}
break loop;
}
}
if (host.charAt(0) == '[') {
if (host.charAt(len - 1) != ']') {
throw new BadMessage(HttpStatus.BAD_REQUEST_400, "Bad IPv6 Host header");
}
host = host.substring(1, len - 1);
} else if (len != host.length()) host = host.substring(0, len);
if (_requestHandler != null) _requestHandler.parsedHostHeader(host, port);
break;
case CONNECTION:
// Don't cache if not persistent
if (_valueString != null && _valueString.indexOf("close") >= 0) {
_closed = true;
_connectionFields = null;
}
break;
case AUTHORIZATION:
case ACCEPT:
case ACCEPT_CHARSET:
case ACCEPT_ENCODING:
case ACCEPT_LANGUAGE:
case COOKIE:
case CACHE_CONTROL:
case USER_AGENT:
add_to_connection_trie = _connectionFields != null && _field == null;
break;
default:
break;
}
if (add_to_connection_trie
&& !_connectionFields.isFull()
&& _header != null
&& _valueString != null) {
_field = new HttpField(_header, _valueString);
_connectionFields.put(_field);
}
return false;
}
/*
* 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;
}
static {
CACHE.put(new HttpField(HttpHeader.CONNECTION, HttpHeaderValue.CLOSE));
CACHE.put(new HttpField(HttpHeader.CONNECTION, HttpHeaderValue.KEEP_ALIVE));
CACHE.put(new HttpField(HttpHeader.CONNECTION, HttpHeaderValue.UPGRADE));
CACHE.put(new HttpField(HttpHeader.ACCEPT_ENCODING, "gzip"));
CACHE.put(new HttpField(HttpHeader.ACCEPT_ENCODING, "gzip, deflate"));
CACHE.put(new HttpField(HttpHeader.ACCEPT_ENCODING, "gzip,deflate,sdch"));
CACHE.put(new HttpField(HttpHeader.ACCEPT_LANGUAGE, "en-US,en;q=0.5"));
CACHE.put(new HttpField(HttpHeader.ACCEPT_LANGUAGE, "en-GB,en-US;q=0.8,en;q=0.6"));
CACHE.put(new HttpField(HttpHeader.ACCEPT_CHARSET, "ISO-8859-1,utf-8;q=0.7,*;q=0.3"));
CACHE.put(new HttpField(HttpHeader.ACCEPT, "*/*"));
CACHE.put(new HttpField(HttpHeader.ACCEPT, "image/png,image/*;q=0.8,*/*;q=0.5"));
CACHE.put(
new HttpField(
HttpHeader.ACCEPT, "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"));
CACHE.put(new HttpField(HttpHeader.PRAGMA, "no-cache"));
CACHE.put(
new HttpField(
HttpHeader.CACHE_CONTROL, "private, no-cache, no-cache=Set-Cookie, proxy-revalidate"));
CACHE.put(new HttpField(HttpHeader.CACHE_CONTROL, "no-cache"));
CACHE.put(new HttpField(HttpHeader.CONTENT_LENGTH, "0"));
CACHE.put(new HttpField(HttpHeader.CONTENT_ENCODING, "gzip"));
CACHE.put(new HttpField(HttpHeader.CONTENT_ENCODING, "deflate"));
CACHE.put(new HttpField(HttpHeader.TRANSFER_ENCODING, "chunked"));
CACHE.put(new HttpField(HttpHeader.EXPIRES, "Fri, 01 Jan 1990 00:00:00 GMT"));
// Add common Content types as fields
for (String type :
new String[] {
"text/plain",
"text/html",
"text/xml",
"text/json",
"application/json",
"application/x-www-form-urlencoded"
}) {
HttpField field = new HttpGenerator.CachedHttpField(HttpHeader.CONTENT_TYPE, type);
CACHE.put(field);
for (String charset : new String[] {"UTF-8", "ISO-8859-1"}) {
CACHE.put(
field =
new HttpGenerator.CachedHttpField(
HttpHeader.CONTENT_TYPE, type + ";charset=" + charset));
CACHE.put(
new HttpGenerator.CachedHttpField(
HttpHeader.CONTENT_TYPE, type + "; charset=" + charset));
}
}
// Add headers with null values so HttpParser can avoid looking up name again for unknown values
for (HttpHeader h : HttpHeader.values())
if (!CACHE.put(new HttpField(h, (String) null)))
throw new IllegalStateException("CACHE FULL");
// Add some more common headers
CACHE.put(new HttpField(HttpHeader.REFERER, (String) null));
CACHE.put(new HttpField(HttpHeader.IF_MODIFIED_SINCE, (String) null));
CACHE.put(new HttpField(HttpHeader.IF_NONE_MATCH, (String) null));
CACHE.put(new HttpField(HttpHeader.AUTHORIZATION, (String) null));
CACHE.put(new HttpField(HttpHeader.COOKIE, (String) null));
}