/**
* Copyright 2013, Landz and its contributors. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package z.net.http.parser;
import java.nio.ByteBuffer;
import static z.net.http.parser.HTTPParser.C.*;
import static z.net.http.parser.HTTPParser.State.*;
public class HTTPParser {
/* lots of unsigned chars here, not sure what
to about them, `bytes` in java suck... */
ParserType type;
State state;
HState header_state;
boolean strict;
int index;
int flags; // TODO
int nread;
long content_length;
int p_start; // updated each call to execute to indicate where the buffer was before we began calling it.
/**
* READ-ONLY *
*/
public int http_major;
public int http_minor;
public int status_code; /* responses only */
public HTTPMethod method; /* requests only */
/* true = Upgrade header was present and the parser has exited because of that.
* false = No upgrade header present.
* Should be checked when http_parser_execute() returns in addition to
* error checking.
*/
public boolean upgrade;
/**
* PUBLIC *
*/
// TODO : this is used in c to maintain application state.
// is this even necessary? we have state in java ?
// consider
// Object data; /* A pointer to get hook to the "connection" or "socket" object */
/*
* technically we could combine all of these (except for url_mark) into one
* variable, saving stack space, but it seems more clear to have them
* separated.
*/
int header_field_mark = -1;
int header_value_mark = -1;
int url_mark = -1;
int body_mark = -1;
/**
* Construct a Parser for ParserType.HTTP_BOTH, meaning it
* determines whether it's parsing a request or a response.
*/
public HTTPParser() {
this(ParserType.HTTP_BOTH);
}
/**
* Construct a Parser and initialise it to parse either
* requests or responses.
*/
public HTTPParser(ParserType type) {
this.type = type;
switch (type) {
case HTTP_REQUEST:
this.state = State.start_req;
break;
case HTTP_RESPONSE:
this.state = State.start_res;
break;
case HTTP_BOTH:
this.state = State.start_req_or_res;
break;
default:
throw new HTTPException("can't happen, invalid ParserType enum");
}
}
/*
* Utility to facilitate System.out.println style debugging (the way god intended)
*/
static void p(Object o) {
System.out.println(o);
}
/**
* Comment from C version follows
* <p>
* Our URL parser.
* <p>
* This is designed to be shared by http_parser_execute() for URL validation,
* hence it has a state transition + byte-for-byte interface. In addition, it
* is meant to be embedded in http_parser_parse_url(), which does the dirty
* work of turning state transitions URL components for its API.
* <p>
* This function should only be invoked with non-space characters. It is
* assumed that the caller cares about (and can detect) the transition between
* URL and non-URL states by looking for these.
*/
public State parse_url_char(byte ch) {
int chi = ch & 0xff; // utility, ch without signedness for table lookups.
if (SPACE == ch) {
throw new HTTPException("space as url char");
}
switch (state) {
case req_spaces_before_url:
/* Proxied requests are followed by scheme of an absolute URI (alpha).
* All methods except CONNECT are followed by '/' or '*'.
*/
if (SLASH == ch || STAR == ch) {
return req_path;
}
if (isAtoZ(ch)) {
return req_schema;
}
break;
case req_schema:
if (isAtoZ(ch)) {
return req_schema;
}
if (COLON == ch) {
return req_schema_slash;
}
break;
case req_schema_slash:
if (SLASH == ch) {
return req_schema_slash_slash;
}
break;
case req_schema_slash_slash:
if (SLASH == ch) {
return req_host_start;
}
break;
case req_host_start:
if (ch == (byte) '[') {
return req_host_v6_start;
}
if (isHostChar(ch)) {
return req_host;
}
break;
case req_host:
if (isHostChar(ch)) {
return req_host;
}
/* FALLTHROUGH */
case req_host_v6_end:
switch (ch) {
case ':':
return req_port_start;
case '/':
return req_path;
case '?':
return req_query_string_start;
}
break;
case req_host_v6:
if (ch == ']') {
return req_host_v6_end;
}
/* FALLTHROUGH */
case req_host_v6_start:
if (isHex(ch) || ch == ':') {
return req_host_v6;
}
break;
case req_port:
switch (ch) {
case '/':
return req_path;
case '?':
return req_query_string_start;
}
/* FALLTHROUGH */
case req_port_start:
if (isDigit(ch)) {
return req_port;
}
break;
case req_path:
if (isNormalUrlChar(chi)) {
return req_path;
}
switch (ch) {
case '?':
return req_query_string_start;
case '#':
return req_fragment_start;
}
break;
case req_query_string_start:
case req_query_string:
if (isNormalUrlChar(chi)) {
return req_query_string;
}
switch (ch) {
case '?':
/* allow extra '?' in query string */
return req_query_string;
case '#':
return req_fragment_start;
}
break;
case req_fragment_start:
if (isNormalUrlChar(chi)) {
return req_fragment;
}
switch (ch) {
case '?':
return req_fragment;
case '#':
return req_fragment_start;
}
break;
case req_fragment:
if (isNormalUrlChar(ch)) {
return req_fragment;
}
switch (ch) {
case '?':
case '#':
return req_fragment;
}
break;
default:
break;
}
/* We should never fall out of the switch above unless there's an error */
return dead;
}
/**
* Execute the parser with the currently available data contained in
* the buffer. The buffers position() and limit() need to be set
* correctly (obviously) and a will be updated approriately when the
* method returns to reflect the consumed data.
*/
public int execute(ParserSettings settings, ByteBuffer data) {
int p = data.position();
this.p_start = p; // this is used for pretty printing errors.
// and returning the amount of processed bytes.
// In case the headers don't provide information about the content
// length, `execute` needs to be called with an empty buffer to
// indicate that all the data has been send be the client/server,
// else there is no way of knowing the message is complete.
int len = (data.limit() - data.position());
if (0 == len) {
// if (State.body_identity_eof == state) {
// settings.call_on_message_complete(this);
// }
switch (state) {
case body_identity_eof:
settings.call_on_message_complete(this);
return data.position() - this.p_start;
case dead:
case start_req_or_res:
case start_res:
case start_req:
return data.position() - this.p_start;
default:
// should we really consider this an error!?
throw new HTTPException("empty bytes! " + state); // error
}
}
// in case the _previous_ call to the parser only has data to get to
// the middle of certain fields, we need to update marks to point at
// the beginning of the current buffer.
switch (state) {
case header_field:
header_field_mark = p;
break;
case header_value:
header_value_mark = p;
break;
case req_path:
case req_schema:
case req_schema_slash:
case req_schema_slash_slash:
case req_host_start:
case req_host_v6_start:
case req_host_v6:
case req_host_v6_end:
case req_host:
case req_port_start:
case req_port:
case req_query_string_start:
case req_query_string:
case req_fragment_start:
case req_fragment:
url_mark = p;
break;
}
boolean reexecute = false;
int pe = 0;
byte ch = 0;
int chi = 0;
byte c = -1;
int to_read = 0;
// this is where the work gets done, traverse the available data...
while (data.position() != data.limit() || reexecute) {
// p(state + ": r: " + reexecute + " :: " +p );
if (!reexecute) {
p = data.position();
pe = data.limit();
ch = data.get(); // the current character to process.
chi = ch & 0xff; // utility, ch without signedness for table lookups.
c = -1; // utility variably used for up- and downcasing etc.
to_read = 0; // used to keep track of how much of body, etc. is left to read
if (parsing_header(state)) {
++nread;
if (nread > HTTP_MAX_HEADER_SIZE) {
return error(settings, "possible buffer overflow", data);
}
}
}
reexecute = false;
// p(state + " ::: " + ch + " : " + (((CR == ch) || (LF == ch)) ? ch : ("'" + (char)ch + "'")) +": "+p );
switch (state) {
/*
* this state is used after a 'Connection: close' message
* the parser will error out if it reads another message
*/
case dead:
if (CR == ch || LF == ch) {
break;
}
return error(settings, "Connection already closed", data);
case start_req_or_res:
if (CR == ch || LF == ch) {
break;
}
flags = 0;
content_length = -1;
if (H == ch) {
state = State.res_or_resp_H;
settings.call_on_message_begin(this);
} else {
type = ParserType.HTTP_REQUEST;
method = start_req_method_assign(ch);
if (null == method) {
return error(settings, "invalid method", data);
}
index = 1;
state = State.req_method;
}
break;
case res_or_resp_H:
if (T == ch) {
type = ParserType.HTTP_RESPONSE;
state = State.res_HT;
} else {
if (E != ch) {
return error(settings, "not E", data);
}
type = ParserType.HTTP_REQUEST;
method = HTTPMethod.HTTP_HEAD;
index = 2;
state = State.req_method;
}
break;
case start_res:
flags = 0;
content_length = -1;
switch (ch) {
case H:
state = State.res_H;
break;
case CR:
case LF:
break;
default:
return error(settings, "Not H or CR/LF", data);
}
settings.call_on_message_begin(this);
break;
case res_H:
if (strict && T != ch) {
return error(settings, "Not T", data);
}
state = State.res_HT;
break;
case res_HT:
if (strict && T != ch) {
return error(settings, "Not T2", data);
}
state = State.res_HTT;
break;
case res_HTT:
if (strict && P != ch) {
return error(settings, "Not P", data);
}
state = State.res_HTTP;
break;
case res_HTTP:
if (strict && SLASH != ch) {
return error(settings, "Not '/'", data);
}
state = State.res_first_http_major;
break;
case res_first_http_major:
if (!isDigit(ch)) {
return error(settings, "Not a digit", data);
}
http_major = (int) ch - 0x30;
state = State.res_http_major;
break;
/* major HTTP version or dot */
case res_http_major:
if (DOT == ch) {
state = State.res_first_http_minor;
break;
}
if (!isDigit(ch)) {
return error(settings, "Not a digit", data);
}
http_major *= 10;
http_major += (ch - 0x30);
if (http_major > 999) {
return error(settings, "invalid http major version: ", data);
}
break;
/* first digit of minor HTTP version */
case res_first_http_minor:
if (!isDigit(ch)) {
return error(settings, "Not a digit", data);
}
http_minor = (int) ch - 0x30;
state = State.res_http_minor;
break;
/* minor HTTP version or end of request line */
case res_http_minor:
if (SPACE == ch) {
state = State.res_first_status_code;
break;
}
if (!isDigit(ch)) {
return error(settings, "Not a digit", data);
}
http_minor *= 10;
http_minor += (ch - 0x30);
if (http_minor > 999) {
return error(settings, "invalid http minor version: ", data);
}
break;
case res_first_status_code:
if (!isDigit(ch)) {
if (SPACE == ch) {
break;
}
return error(settings, "Not a digit (status code)", data);
}
status_code = (int) ch - 0x30;
state = State.res_status_code;
break;
case res_status_code:
if (!isDigit(ch)) {
switch (ch) {
case SPACE:
state = State.res_status;
break;
case CR:
state = State.res_line_almost_done;
break;
case LF:
state = State.header_field_start;
break;
default:
return error(settings, "not a valid status code", data);
}
break;
}
status_code *= 10;
status_code += (int) ch - 0x30;
if (status_code > 999) {
return error(settings, "ridiculous status code:", data);
}
if (status_code > 99) {
settings.call_on_status_complete(this);
}
break;
case res_status:
/* the human readable status. e.g. "NOT FOUND"
* we are not humans so just ignore this
* we are not men, we are devo. */
if (CR == ch) {
state = State.res_line_almost_done;
break;
}
if (LF == ch) {
state = State.header_field_start;
break;
}
break;
case res_line_almost_done:
if (strict && LF != ch) {
return error(settings, "not LF", data);
}
state = State.header_field_start;
break;
case start_req:
if (CR == ch || LF == ch) {
break;
}
flags = 0;
content_length = -1;
if (!isAtoZ(ch)) {
return error(settings, "invalid method", data);
}
method = start_req_method_assign(ch);
if (null == method) {
return error(settings, "invalid method", data);
}
index = 1;
state = State.req_method;
settings.call_on_message_begin(this);
break;
case req_method:
if (0 == ch) {
return error(settings, "NULL in method", data);
}
byte[] arr = method.bytes;
if (SPACE == ch && index == arr.length) {
state = State.req_spaces_before_url;
} else if (arr[index] == ch) {
// wuhu!
} else if (HTTPMethod.HTTP_CONNECT == method) {
if (1 == index && H == ch) {
method = HTTPMethod.HTTP_CHECKOUT;
} else if (2 == index && P == ch) {
method = HTTPMethod.HTTP_COPY;
}
} else if (HTTPMethod.HTTP_MKCOL == method) {
if (1 == index && O == ch) {
method = HTTPMethod.HTTP_MOVE;
} else if (1 == index && E == ch) {
method = HTTPMethod.HTTP_MERGE;
} else if (1 == index && DASH == ch) { /* M-SEARCH */
method = HTTPMethod.HTTP_MSEARCH;
} else if (2 == index && A == ch) {
method = HTTPMethod.HTTP_MKACTIVITY;
}
} else if (1 == index && HTTPMethod.HTTP_POST == method) {
if (R == ch) {
method = HTTPMethod.HTTP_PROPFIND; /* or HTTP_PROPPATCH */
} else if (U == ch) {
method = HTTPMethod.HTTP_PUT; /* or HTTP_PURGE */
} else if (A == ch) {
method = HTTPMethod.HTTP_PATCH;
}
} else if (2 == index) {
if (HTTPMethod.HTTP_PUT == method) {
if (R == ch) {
method = HTTPMethod.HTTP_PURGE;
}
} else if (HTTPMethod.HTTP_UNLOCK == method) {
if (S == ch) {
method = HTTPMethod.HTTP_UNSUBSCRIBE;
}
}
} else if (4 == index && HTTPMethod.HTTP_PROPFIND == method && P == ch) {
method = HTTPMethod.HTTP_PROPPATCH;
} else {
return error(settings, "Invalid HTTP method", data);
}
++index;
break;
/******************* URL *******************/
case req_spaces_before_url:
if (SPACE == ch) {
break;
}
url_mark = p;
if (HTTPMethod.HTTP_CONNECT == method) {
state = req_host_start;
}
state = parse_url_char(ch);
if (state == dead) {
return error(settings, "Invalid something", data);
}
break;
case req_schema:
case req_schema_slash:
case req_schema_slash_slash:
case req_host_start:
case req_host_v6_start:
case req_host_v6:
case req_port_start:
switch (ch) {
/* No whitespace allowed here */
case SPACE:
case CR:
case LF:
return error(settings, "unexpected char in path", data);
default:
state = parse_url_char(ch);
if (dead == state) {
return error(settings, "unexpected char in path", data);
}
}
break;
case req_host:
case req_host_v6_end:
case req_port:
case req_path:
case req_query_string_start:
case req_query_string:
case req_fragment_start:
case req_fragment:
switch (ch) {
case SPACE:
settings.call_on_url(this, data, url_mark, p - url_mark);
settings.call_on_path(this, data, url_mark, p - url_mark);
url_mark = -1;
state = State.req_http_start;
break;
case CR:
case LF:
http_major = 0;
http_minor = 9;
state = (CR == ch) ? req_line_almost_done : header_field_start;
settings.call_on_url(this, data, url_mark, p - url_mark); //TODO check params!!!
settings.call_on_path(this, data, url_mark, p - url_mark);
url_mark = -1;
break;
default:
state = parse_url_char(ch);
if (dead == state) {
return error(settings, "unexpected char in path", data);
}
}
break;
/******************* URL *******************/
/******************* HTTP 1.1 *******************/
case req_http_start:
switch (ch) {
case H:
state = State.req_http_H;
break;
case SPACE:
break;
default:
return error(settings, "error in req_http_H", data);
}
break;
case req_http_H:
if (strict && T != ch) {
return error(settings, "unexpected char", data);
}
state = State.req_http_HT;
break;
case req_http_HT:
if (strict && T != ch) {
return error(settings, "unexpected char", data);
}
state = State.req_http_HTT;
break;
case req_http_HTT:
if (strict && P != ch) {
return error(settings, "unexpected char", data);
}
state = State.req_http_HTTP;
break;
case req_http_HTTP:
if (strict && SLASH != ch) {
return error(settings, "unexpected char", data);
}
state = req_first_http_major;
break;
/* first digit of major HTTP version */
case req_first_http_major:
if (!isDigit(ch)) {
return error(settings, "non digit in http major", data);
}
http_major = (int) ch - 0x30;
state = State.req_http_major;
break;
/* major HTTP version or dot */
case req_http_major:
if (DOT == ch) {
state = State.req_first_http_minor;
break;
}
if (!isDigit(ch)) {
return error(settings, "non digit in http major", data);
}
http_major *= 10;
http_major += (int) ch - 0x30;
if (http_major > 999) {
return error(settings, "ridiculous http major", data);
}
;
break;
/* first digit of minor HTTP version */
case req_first_http_minor:
if (!isDigit(ch)) {
return error(settings, "non digit in http minor", data);
}
http_minor = (int) ch - 0x30;
state = State.req_http_minor;
break;
case req_http_minor:
if (ch == CR) {
state = State.req_line_almost_done;
break;
}
if (ch == LF) {
state = State.header_field_start;
break;
}
/* XXX allow spaces after digit? */
if (!isDigit(ch)) {
return error(settings, "non digit in http minor", data);
}
http_minor *= 10;
http_minor += (int) ch - 0x30;
if (http_minor > 999) {
return error(settings, "ridiculous http minor", data);
}
;
break;
/* end of request line */
case req_line_almost_done: {
if (ch != LF) {
return error(settings, "missing LF after request line", data);
}
state = header_field_start;
break;
}
/******************* HTTP 1.1 *******************/
/******************* Header *******************/
case header_field_start: {
if (ch == CR) {
state = headers_almost_done;
break;
}
if (ch == LF) {
/* they might be just sending \n instead of \r\n so this would be
* the second \n to denote the end of headers*/
state = State.headers_almost_done;
reexecute = true;
break;
}
c = token(ch);
if (0 == c) {
return error(settings, "invalid char in header:", data);
}
header_field_mark = p;
index = 0;
state = State.header_field;
switch (c) {
case C:
header_state = HState.C;
break;
case P:
header_state = HState.matching_proxy_connection;
break;
case T:
header_state = HState.matching_transfer_encoding;
break;
case U:
header_state = HState.matching_upgrade;
break;
default:
header_state = HState.general;
break;
}
break;
}
case header_field: {
c = token(ch);
if (0 != c) {
switch (header_state) {
case general:
break;
case C:
index++;
header_state = (O == c ? HState.CO : HState.general);
break;
case CO:
index++;
header_state = (N == c ? HState.CON : HState.general);
break;
case CON:
index++;
switch (c) {
case N:
header_state = HState.matching_connection;
break;
case T:
header_state = HState.matching_content_length;
break;
default:
header_state = HState.general;
break;
}
break;
/* connection */
case matching_connection:
index++;
if (index > CONNECTION.length || c != CONNECTION[index]) {
header_state = HState.general;
} else if (index == CONNECTION.length - 1) {
header_state = HState.connection;
}
break;
/* proxy-connection */
case matching_proxy_connection:
index++;
if (index > PROXY_CONNECTION.length || c != PROXY_CONNECTION[index]) {
header_state = HState.general;
} else if (index == PROXY_CONNECTION.length - 1) {
header_state = HState.connection;
}
break;
/* content-length */
case matching_content_length:
index++;
if (index > CONTENT_LENGTH.length || c != CONTENT_LENGTH[index]) {
header_state = HState.general;
} else if (index == CONTENT_LENGTH.length - 1) {
header_state = HState.content_length;
}
break;
/* transfer-encoding */
case matching_transfer_encoding:
index++;
if (index > TRANSFER_ENCODING.length || c != TRANSFER_ENCODING[index]) {
header_state = HState.general;
} else if (index == TRANSFER_ENCODING.length - 1) {
header_state = HState.transfer_encoding;
}
break;
/* upgrade */
case matching_upgrade:
index++;
if (index > UPGRADE.length || c != UPGRADE[index]) {
header_state = HState.general;
} else if (index == UPGRADE.length - 1) {
header_state = HState.upgrade;
}
break;
case connection:
case content_length:
case transfer_encoding:
case upgrade:
if (SPACE != ch) header_state = HState.general;
break;
default:
return error(settings, "Unknown Header State", data);
} // switch: header_state
break;
} // 0 != c
if (COLON == ch) {
settings.call_on_header_field(this, data, header_field_mark, p - header_field_mark);
header_field_mark = -1;
state = State.header_value_start;
break;
}
if (CR == ch) {
state = State.header_almost_done;
settings.call_on_header_field(this, data, header_field_mark, p - header_field_mark);
header_field_mark = -1;
break;
}
if (ch == LF) {
settings.call_on_header_field(this, data, header_field_mark, p - header_field_mark);
header_field_mark = -1;
state = State.header_field_start;
break;
}
return error(settings, "invalid header field", data);
}
case header_value_start: {
if ((SPACE == ch) || (TAB == ch)) break;
header_value_mark = p;
state = State.header_value;
index = 0;
if (CR == ch) {
settings.call_on_header_value(this, data, header_value_mark, p - header_value_mark);
header_value_mark = -1;
header_state = HState.general;
state = State.header_almost_done;
break;
}
if (LF == ch) {
settings.call_on_header_value(this, data, header_value_mark, p - header_value_mark);
header_value_mark = -1;
state = State.header_field_start;
break;
}
c = upper(ch);
switch (header_state) {
case upgrade:
flags |= F_UPGRADE;
header_state = HState.general;
break;
case transfer_encoding:
/* looking for 'Transfer-Encoding: chunked' */
if (C == c) {
header_state = HState.matching_transfer_encoding_chunked;
} else {
header_state = HState.general;
}
break;
case content_length:
if (!isDigit(ch)) {
return error(settings, "Content-Length not numeric", data);
}
content_length = (int) ch - 0x30;
break;
case connection:
/* looking for 'Connection: keep-alive' */
if (K == c) {
header_state = HState.matching_connection_keep_alive;
/* looking for 'Connection: close' */
} else if (C == c) {
header_state = HState.matching_connection_close;
} else {
header_state = HState.general;
}
break;
default:
header_state = HState.general;
break;
}
break;
} // header value start
case header_value: {
if (CR == ch) {
settings.call_on_header_value(this, data, header_value_mark, p - header_value_mark);
header_value_mark = -1;
state = State.header_almost_done;
break;
}
if (LF == ch) {
settings.call_on_header_value(this, data, header_value_mark, p - header_value_mark);
header_value_mark = -1;
state = header_almost_done;
reexecute = true;
break;
}
c = upper(ch);
switch (header_state) {
case general:
break;
case connection:
case transfer_encoding:
return error(settings, "Shouldn't be here", data);
case content_length:
if (SPACE == ch) {
break;
}
if (!isDigit(ch)) {
return error(settings, "Content-Length not numeric", data);
}
long t = content_length;
t *= 10;
t += (long) ch - 0x30;
/* Overflow? */
// t will wrap and become negative ...
if (t < content_length) {
return error(settings, "Invalid content length", data);
}
content_length = t;
break;
/* Transfer-Encoding: chunked */
case matching_transfer_encoding_chunked:
index++;
if (index > CHUNKED.length || c != CHUNKED[index]) {
header_state = HState.general;
} else if (index == CHUNKED.length - 1) {
header_state = HState.transfer_encoding_chunked;
}
break;
/* looking for 'Connection: keep-alive' */
case matching_connection_keep_alive:
index++;
if (index > KEEP_ALIVE.length || c != KEEP_ALIVE[index]) {
header_state = HState.general;
} else if (index == KEEP_ALIVE.length - 1) {
header_state = HState.connection_keep_alive;
}
break;
/* looking for 'Connection: close' */
case matching_connection_close:
index++;
if (index > CLOSE.length || c != CLOSE[index]) {
header_state = HState.general;
} else if (index == CLOSE.length - 1) {
header_state = HState.connection_close;
}
break;
case transfer_encoding_chunked:
case connection_keep_alive:
case connection_close:
if (SPACE != ch) header_state = HState.general;
break;
default:
state = State.header_value;
header_state = HState.general;
break;
}
break;
} // header_value
case header_almost_done:
if (!header_almost_done(ch)) {
return error(settings, "incorrect header ending, expecting LF", data);
}
break;
case header_value_lws:
if (SPACE == ch || TAB == ch) {
state = header_value_start;
} else {
state = header_field_start;
reexecute = true;
}
break;
case headers_almost_done:
if (LF != ch) {
return error(settings, "header not properly completed", data);
}
if (0 != (flags & F_TRAILING)) {
/* End of a chunked request */
state = new_message();
settings.call_on_headers_complete(this);
settings.call_on_message_complete(this);
break;
}
state = headers_done;
if (0 != (flags & F_UPGRADE) || HTTPMethod.HTTP_CONNECT == method) {
upgrade = true;
}
/* Here we call the headers_complete callback. This is somewhat
* different than other callbacks because if the user returns 1, we
* will interpret that as saying that this message has no body. This
* is needed for the annoying case of recieving a response to a HEAD
* request.
*/
/* (responses to HEAD request contain a CONTENT-LENGTH header
* but no content)
*
* Consider what to do here: I don't like the idea of the callback
* interface having a different contract in the case of HEAD
* responses. The alternatives would be either to:
*
* a.) require the header_complete callback to implement a different
* interface or
*
* b.) provide an overridden execute(bla, bla, boolean
* parsingHeader) implementation ...
*/
/*TODO TODO TODO TODO TODO TODO TODO TODO TODO TODO */
if (null != settings.on_headers_complete) {
settings.call_on_headers_complete(this);
//return;
}
// if (null != settings.on_headers_complete) {
// switch (settings.on_headers_complete.cb(parser)) {
// case 0:
// break;
//
// case 1:
// flags |= F_SKIPBODY;
// break;
//
// default:
// return p - data; /* Error */ // TODO // RuntimeException ?
// }
// }
reexecute = true;
break;
case headers_done:
if (strict && (LF != ch)) {
return error(settings, "STRICT CHECK", data); //TODO correct error msg
}
nread = 0;
// Exit, the rest of the connect is in a different protocol.
if (upgrade) {
state = new_message();
settings.call_on_message_complete(this);
return data.position() - this.p_start;
}
if (0 != (flags & F_SKIPBODY)) {
state = new_message();
settings.call_on_message_complete(this);
} else if (0 != (flags & F_CHUNKED)) {
/* chunked encoding - ignore Content-Length header */
state = State.chunk_size_start;
} else {
if (content_length == 0) {
/* Content-Length header given but zero: Content-Length: 0\r\n */
state = new_message();
settings.call_on_message_complete(this);
} else if (content_length != -1) {
/* Content-Length header given and non-zero */
state = State.body_identity;
} else {
if (type == ParserType.HTTP_REQUEST || !http_message_needs_eof()) {
/* Assume content-length 0 - read the next */
state = new_message();
settings.call_on_message_complete(this);
} else {
/* Read body until EOF */
state = State.body_identity_eof;
}
}
}
break;
/******************* Header *******************/
/******************* Body *******************/
case body_identity:
to_read = min(pe - p, content_length); //TODO change to use buffer?
body_mark = p;
if (to_read > 0) {
settings.call_on_body(this, data, p, to_read);
data.position(p + to_read);
content_length -= to_read;
if (content_length == 0) {
state = message_done;
reexecute = true;
}
}
break;
case body_identity_eof:
to_read = pe - p; // TODO change to use buffer ?
if (to_read > 0) {
settings.call_on_body(this, data, p, to_read);
data.position(p + to_read);
}
break;
case message_done:
state = new_message();
settings.call_on_message_complete(this);
break;
/******************* Body *******************/
/******************* Chunk *******************/
case chunk_size_start:
if (1 != this.nread) {
return error(settings, "nread != 1 (chunking)", data);
}
if (0 == (flags & F_CHUNKED)) {
return error(settings, "not chunked", data);
}
c = UNHEX[chi];
if (c == -1) {
return error(settings, "invalid hex char in chunk content length", data);
}
content_length = c;
state = State.chunk_size;
break;
case chunk_size:
if (0 == (flags & F_CHUNKED)) {
return error(settings, "not chunked", data);
}
if (CR == ch) {
state = State.chunk_size_almost_done;
break;
}
c = UNHEX[chi];
if (c == -1) {
if (SEMI == ch || SPACE == ch) {
state = State.chunk_parameters;
break;
}
return error(settings, "invalid hex char in chunk content length", data);
}
long t = content_length;
t *= 16;
t += c;
if (t < content_length) {
return error(settings, "invalid content length", data);
}
content_length = t;
break;
case chunk_parameters:
if (0 == (flags & F_CHUNKED)) {
return error(settings, "not chunked", data);
}
/* just ignore this shit. TODO check for overflow */
if (CR == ch) {
state = State.chunk_size_almost_done;
break;
}
break;
case chunk_size_almost_done:
if (0 == (flags & F_CHUNKED)) {
return error(settings, "not chunked", data);
}
if (strict && LF != ch) {
return error(settings, "expected LF at end of chunk size", data);
}
this.nread = 0;
if (0 == content_length) {
flags |= F_TRAILING;
state = State.header_field_start;
} else {
state = State.chunk_data;
}
break;
case chunk_data:
//TODO Apply changes from C version for s_chunk_data
if (0 == (flags & F_CHUNKED)) {
return error(settings, "not chunked", data);
}
to_read = min(pe - p, content_length);
if (to_read > 0) {
settings.call_on_body(this, data, p, to_read);
data.position(p + to_read);
}
if (to_read == content_length) {
state = State.chunk_data_almost_done;
}
content_length -= to_read;
break;
case chunk_data_almost_done:
if (0 == (flags & F_CHUNKED)) {
return error(settings, "not chunked", data);
}
if (strict && CR != ch) {
return error(settings, "chunk data terminated incorrectly, expected CR", data);
}
state = State.chunk_data_done;
//TODO CALLBACK_DATA(body)
// settings.call_on_body(this, data,p,?);
break;
case chunk_data_done:
if (0 == (flags & F_CHUNKED)) {
return error(settings, "not chunked", data);
}
if (strict && LF != ch) {
return error(settings, "chunk data terminated incorrectly, expected LF", data);
}
state = State.chunk_size_start;
break;
/******************* Chunk *******************/
default:
return error(settings, "unhandled state", data);
} // switch
} // while
p = data.position();
/* Reaching this point assumes that we only received part of a
* message, inform the callbacks about the progress made so far*/
settings.call_on_header_field(this, data, header_field_mark, p - header_field_mark);
settings.call_on_header_value(this, data, header_value_mark, p - header_value_mark);
settings.call_on_url(this, data, url_mark, p - url_mark);
settings.call_on_path(this, data, url_mark, p - url_mark);
return data.position() - this.p_start;
} // execute
int error(ParserSettings settings, String mes, ByteBuffer data) {
settings.call_on_error(this, mes, data, this.p_start);
this.state = State.dead;
return data.position() - this.p_start;
}
public boolean http_message_needs_eof() {
if (type == ParserType.HTTP_REQUEST) {
return false;
}
/* See RFC 2616 section 4.4 */
if ((status_code / 100 == 1) || /* 1xx e.g. Continue */
(status_code == 204) || /* No Content */
(status_code == 304) || /* Not Modified */
(flags & F_SKIPBODY) != 0) { /* response to a HEAD request */
return false;
}
if ((flags & F_CHUNKED) != 0 || content_length != -1) {
return false;
}
return true;
}
/* If http_should_keep_alive() in the on_headers_complete or
* on_message_complete callback returns true, then this will be should be
* the last message on the connection.
* If you are the server, respond with the "Connection: close" header.
* If you are the client, close the connection.
*/
public boolean http_should_keep_alive() {
if (http_major > 0 && http_minor > 0) {
/* HTTP/1.1 */
if (0 != (flags & F_CONNECTION_CLOSE)) {
return false;
}
} else {
/* HTTP/1.0 or earlier */
if (0 == (flags & F_CONNECTION_KEEP_ALIVE)) {
return false;
}
}
return !http_message_needs_eof();
}
public int parse_url(ByteBuffer data, boolean is_connect, HTTPParserUrl u) {
UrlFields uf = UrlFields.UF_MAX;
UrlFields old_uf = UrlFields.UF_MAX;
u.port = 0;
u.field_set = 0;
state = (is_connect ? State.req_host_start : State.req_spaces_before_url);
int p_init = data.position();
int p = 0;
byte ch = 0;
while (data.position() != data.limit()) {
p = data.position();
ch = data.get();
state = parse_url_char(ch);
switch (state) {
case dead:
return 1;
/* Skip delimeters */
case req_schema_slash:
case req_schema_slash_slash:
case req_host_start:
case req_host_v6_start:
case req_host_v6_end:
case req_port_start:
case req_query_string_start:
case req_fragment_start:
continue;
case req_schema:
uf = UrlFields.UF_SCHEMA;
break;
case req_host:
case req_host_v6:
uf = UrlFields.UF_HOST;
break;
case req_port:
uf = UrlFields.UF_PORT;
break;
case req_path:
uf = UrlFields.UF_PATH;
break;
case req_query_string:
uf = UrlFields.UF_QUERY;
break;
case req_fragment:
uf = UrlFields.UF_FRAGMENT;
break;
default:
return 1;
}
/* Nothing's changed; soldier on */
if (uf == old_uf) {
u.field_data[uf.getIndex()].len++;
continue;
}
u.field_data[uf.getIndex()].off = p - p_init;
u.field_data[uf.getIndex()].len = 1;
u.field_set |= (1 << uf.getIndex());
old_uf = uf;
}
/* CONNECT requests can only contain "hostname:port" */
if (is_connect && u.field_set != ((1 << UrlFields.UF_HOST.getIndex()) | (1 << UrlFields.UF_PORT.getIndex()))) {
return 1;
}
/* Make sure we don't end somewhere unexpected */
switch (state) {
case req_host_v6_start:
case req_host_v6:
case req_host_v6_end:
case req_host:
case req_port_start:
return 1;
default:
break;
}
if (0 != (u.field_set & (1 << UrlFields.UF_PORT.getIndex()))) {
/* Don't bother with endp; we've already validated the string */
int v = strtoi(data, p_init + u.field_data[UrlFields.UF_PORT.getIndex()].off);
/* Ports have a max value of 2^16 */
if (v > 0xffff) {
return 1;
}
u.port = v;
}
return 0;
}
//hacky reimplementation of srttoul, tailored for our simple needs
//we only need to parse port val, so no negative values etc
int strtoi(ByteBuffer data, int start_pos) {
data.position(start_pos);
byte ch;
String str = "";
while (data.position() < data.limit()) {
ch = data.get();
if (Character.isWhitespace((char) ch)) {
continue;
}
if (isDigit(ch)) {
str = str + (char) ch; //TODO replace with something less hacky
} else {
break;
}
}
return Integer.parseInt(str);
}
boolean isDigit(byte b) {
if (b >= 0x30 && b <= 0x39) {
return true;
}
return false;
}
boolean isHex(byte b) {
return isDigit(b) || (lower(b) >= 0x61 /*a*/ && lower(b) <= 0x66 /*f*/);
}
boolean isAtoZ(byte b) {
byte c = lower(b);
return (c >= 0x61 /*a*/ && c <= 0x7a /*z*/);
}
byte lower(byte b) {
return (byte) (b | 0x20);
}
byte upper(byte b) {
char c = (char) (b);
return (byte) Character.toUpperCase(c);
}
byte token(byte b) {
if (!strict) {
return (b == (byte) ' ') ? (byte) ' ' : (byte) tokens[b];
} else {
return (byte) tokens[b];
}
}
boolean isHostChar(byte ch) {
if (!strict) {
return (isAtoZ(ch)) || isDigit(ch) || DOT == ch || DASH == ch || UNDER == ch;
} else {
return (isAtoZ(ch)) || isDigit(ch) || DOT == ch || DASH == ch;
}
}
boolean isNormalUrlChar(int chi) {
if (!strict) {
return (chi > 0x80) || normal_url_char[chi];
} else {
return normal_url_char[chi];
}
}
HTTPMethod start_req_method_assign(byte c) {
switch (c) {
case C:
return HTTPMethod.HTTP_CONNECT; /* or COPY, CHECKOUT */
case D:
return HTTPMethod.HTTP_DELETE;
case G:
return HTTPMethod.HTTP_GET;
case H:
return HTTPMethod.HTTP_HEAD;
case L:
return HTTPMethod.HTTP_LOCK;
case M:
return HTTPMethod.HTTP_MKCOL; /* or MOVE, MKACTIVITY, MERGE, M-SEARCH */
case N:
return HTTPMethod.HTTP_NOTIFY;
case O:
return HTTPMethod.HTTP_OPTIONS;
case P:
return HTTPMethod.HTTP_POST; /* or PROPFIND|PROPPATCH|PUT|PATCH|PURGE */
case R:
return HTTPMethod.HTTP_REPORT;
case S:
return HTTPMethod.HTTP_SUBSCRIBE;
case T:
return HTTPMethod.HTTP_TRACE;
case U:
return HTTPMethod.HTTP_UNLOCK; /* or UNSUBSCRIBE */
}
return null; // ugh.
}
boolean header_almost_done(byte ch) {
if (strict && LF != ch) {
return false;
}
state = State.header_value_lws;
// TODO java enums support some sort of bitflag mechanism !?
switch (header_state) {
case connection_keep_alive:
flags |= F_CONNECTION_KEEP_ALIVE;
break;
case connection_close:
flags |= F_CONNECTION_CLOSE;
break;
case transfer_encoding_chunked:
flags |= F_CHUNKED;
break;
default:
break;
}
return true;
}
// boolean headers_almost_done (byte ch, ParserSettings settings) {
// } // headers_almost_done
final int min(int a, int b) {
return a < b ? a : b;
}
final int min(int a, long b) {
return a < b ? a : (int) b;
}
/* probably not the best place to hide this ... */
public boolean HTTP_PARSER_STRICT;
State new_message() {
if (HTTP_PARSER_STRICT) {
return http_should_keep_alive() ? start_state() : State.dead;
} else {
return start_state();
}
}
State start_state() {
return type == ParserType.HTTP_REQUEST ? State.start_req : State.start_res;
}
boolean parsing_header(State state) {
switch (state) {
case chunk_data:
case chunk_data_almost_done:
case chunk_data_done:
case body_identity:
case body_identity_eof:
case message_done:
return false;
}
return true;
}
/* "Dial C for Constants" */
static class C {
static final int HTTP_MAX_HEADER_SIZE = 80 * 1024;
static final int F_CHUNKED = 1 << 0;
static final int F_CONNECTION_KEEP_ALIVE = 1 << 1;
static final int F_CONNECTION_CLOSE = 1 << 2;
static final int F_TRAILING = 1 << 3;
static final int F_UPGRADE = 1 << 4;
static final int F_SKIPBODY = 1 << 5;
static final byte[] UPCASE = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2d, 0x00, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x00, 0x00, 0x00, 0x00, 0x5f,
0x00, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static final byte[] CONNECTION = {
0x43, 0x4f, 0x4e, 0x4e, 0x45, 0x43, 0x54, 0x49, 0x4f, 0x4e,
};
static final byte[] PROXY_CONNECTION = {
0x50, 0x52, 0x4f, 0x58, 0x59, 0x2d, 0x43, 0x4f, 0x4e, 0x4e, 0x45, 0x43, 0x54, 0x49, 0x4f, 0x4e,
};
static final byte[] CONTENT_LENGTH = {
0x43, 0x4f, 0x4e, 0x54, 0x45, 0x4e, 0x54, 0x2d, 0x4c, 0x45, 0x4e, 0x47, 0x54, 0x48,
};
static final byte[] TRANSFER_ENCODING = {
0x54, 0x52, 0x41, 0x4e, 0x53, 0x46, 0x45, 0x52, 0x2d, 0x45, 0x4e, 0x43, 0x4f, 0x44, 0x49, 0x4e, 0x47,
};
static final byte[] UPGRADE = {
0x55, 0x50, 0x47, 0x52, 0x41, 0x44, 0x45,
};
static final byte[] CHUNKED = {
0x43, 0x48, 0x55, 0x4e, 0x4b, 0x45, 0x44,
};
static final byte[] KEEP_ALIVE = {
0x4b, 0x45, 0x45, 0x50, 0x2d, 0x41, 0x4c, 0x49, 0x56, 0x45,
};
static final byte[] CLOSE = {
0x43, 0x4c, 0x4f, 0x53, 0x45,
};
/* Tokens as defined by rfc 2616. Also lowercases them.
* token = 1*<any CHAR except CTLs or separators>
* separators = "(" | ")" | "<" | ">" | "@"
* | "," | ";" | ":" | "\" | <">
* | "/" | "[" | "]" | "?" | "="
* | "{" | "}" | SP | HT
*/
static final char[] tokens = {
/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
0, 0, 0, 0, 0, 0, 0, 0,
/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
0, 0, 0, 0, 0, 0, 0, 0,
/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
0, 0, 0, 0, 0, 0, 0, 0,
/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
0, 0, 0, 0, 0, 0, 0, 0,
/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
0, '!', 0, '#', '$', '%', '&', '\'',
/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
0, 0, '*', '+', 0, '-', '.', 0,
/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
'0', '1', '2', '3', '4', '5', '6', '7',
/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
'8', '9', 0, 0, 0, 0, 0, 0,
/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
0, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
'X', 'Y', 'Z', 0, 0, 0, 0, '_',
/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
0, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
'X', 'Y', 'Z', 0, '|', 0, '~', 0,
/* hi bit set, not ascii */
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,};
static final byte[] UNHEX =
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1
, -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};
static final boolean[] normal_url_char = {
/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
false, false, false, false, false, false, false, false,
/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
false, false, false, false, false, false, false, false,
/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
false, false, false, false, false, false, false, false,
/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
false, false, false, false, false, false, false, false,
/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
false, true, true, false, true, true, true, true,
/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
true, true, true, true, true, true, true, true,
/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
true, true, true, true, true, true, true, true,
/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
true, true, true, true, true, true, true, false,
/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
true, true, true, true, true, true, true, true,
/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
true, true, true, true, true, true, true, true,
/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
true, true, true, true, true, true, true, true,
/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
true, true, true, true, true, true, true, true,
/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
true, true, true, true, true, true, true, true,
/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
true, true, true, true, true, true, true, true,
/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
true, true, true, true, true, true, true, true,
/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
true, true, true, true, true, true, true, false,
/* hi bit set, not ascii */
/* Remainder of non-ASCII range are accepted as-is to support implicitly UTF-8
* encoded paths. This is out of spec, but clients generate this and most other
* HTTP servers support it. We should, too. */
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true,
};
public static final byte A = 0x41;
public static final byte B = 0x42;
public static final byte C = 0x43;
public static final byte D = 0x44;
public static final byte E = 0x45;
public static final byte F = 0x46;
public static final byte G = 0x47;
public static final byte H = 0x48;
public static final byte I = 0x49;
public static final byte J = 0x4a;
public static final byte K = 0x4b;
public static final byte L = 0x4c;
public static final byte M = 0x4d;
public static final byte N = 0x4e;
public static final byte O = 0x4f;
public static final byte P = 0x50;
public static final byte Q = 0x51;
public static final byte R = 0x52;
public static final byte S = 0x53;
public static final byte T = 0x54;
public static final byte U = 0x55;
public static final byte V = 0x56;
public static final byte W = 0x57;
public static final byte X = 0x58;
public static final byte Y = 0x59;
public static final byte Z = 0x5a;
public static final byte UNDER = 0x5f;
public static final byte CR = 0x0d;
public static final byte LF = 0x0a;
public static final byte DOT = 0x2e;
public static final byte SPACE = 0x20;
public static final byte TAB = 0x09;
public static final byte SEMI = 0x3b;
public static final byte COLON = 0x3a;
public static final byte HASH = 0x23;
public static final byte QMARK = 0x3f;
public static final byte SLASH = 0x2f;
public static final byte DASH = 0x2d;
public static final byte STAR = 0x2a;
public static final byte NULL = 0x00;
}
enum State {
dead, start_req_or_res, res_or_resp_H, start_res, res_H, res_HT, res_HTT, res_HTTP, res_first_http_major, res_http_major, res_first_http_minor, res_http_minor, res_first_status_code, res_status_code, res_status, res_line_almost_done, start_req, req_method, req_spaces_before_url, req_schema, req_schema_slash, req_schema_slash_slash, req_host_start, req_host_v6_start, req_host_v6, req_host_v6_end, req_host, req_port_start, req_port, req_path, req_query_string_start, req_query_string, req_fragment_start, req_fragment, req_http_start, req_http_H, req_http_HT, req_http_HTT, req_http_HTTP, req_first_http_major, req_http_major, req_first_http_minor, req_http_minor, req_line_almost_done, header_field_start, header_field, header_value_start, header_value, header_value_lws, header_almost_done, chunk_size_start, chunk_size, chunk_parameters, chunk_size_almost_done, headers_almost_done, headers_done
// This space intentionally not left blank, comment from c, for orientation...
// the c version uses <= s_header_almost_done in java, we list the states explicitly
// in `parsing_header()`
/* Important: 's_headers_done' must be the last 'header' state. All
* states beyond this must be 'body' states. It is used for overflow
* checking. See the PARSING_HEADER() macro.
*/, chunk_data, chunk_data_almost_done, chunk_data_done, body_identity, body_identity_eof, message_done
}
enum HState {
general, C, CO, CON, matching_connection, matching_proxy_connection, matching_content_length, matching_transfer_encoding, matching_upgrade, connection, content_length, transfer_encoding, upgrade, matching_transfer_encoding_chunked, matching_connection_keep_alive, matching_connection_close, transfer_encoding_chunked, connection_keep_alive, connection_close
}
public enum UrlFields {
UF_SCHEMA(0), UF_HOST(1), UF_PORT(2), UF_PATH(3), UF_QUERY(4), UF_FRAGMENT(5), UF_MAX(6);
private final int index;
private UrlFields(int index) {
this.index = index;
}
public int getIndex() {
return index;
}
}
}