--- a/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/Http1HeaderParser.java Tue Feb 06 11:39:55 2018 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,274 +0,0 @@
-/*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package jdk.incubator.http;
-
-import java.net.ProtocolException;
-import java.nio.ByteBuffer;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import static java.lang.String.format;
-import static java.util.Objects.requireNonNull;
-
-class Http1HeaderParser {
-
- private static final char CR = '\r';
- private static final char LF = '\n';
- private static final char HT = '\t';
- private static final char SP = ' ';
-
- private StringBuilder sb = new StringBuilder();
- private String statusLine;
- private int responseCode;
- private HttpHeaders headers;
- private Map<String,List<String>> privateMap = new HashMap<>();
-
- enum State { STATUS_LINE,
- STATUS_LINE_FOUND_CR,
- STATUS_LINE_END,
- STATUS_LINE_END_CR,
- HEADER,
- HEADER_FOUND_CR,
- HEADER_FOUND_LF,
- HEADER_FOUND_CR_LF,
- HEADER_FOUND_CR_LF_CR,
- FINISHED }
-
- private State state = State.STATUS_LINE;
-
- /** Returns the status-line. */
- String statusLine() { return statusLine; }
-
- /** Returns the response code. */
- int responseCode() { return responseCode; }
-
- /** Returns the headers, possibly empty. */
- HttpHeaders headers() { assert state == State.FINISHED; return headers; }
-
- /**
- * Parses HTTP/1.X status-line and headers from the given bytes. Must be
- * called successive times, with additional data, until returns true.
- *
- * All given ByteBuffers will be consumed, until ( possibly ) the last one
- * ( when true is returned ), which may not be fully consumed.
- *
- * @param input the ( partial ) header data
- * @return true iff the end of the headers block has been reached
- */
- boolean parse(ByteBuffer input) throws ProtocolException {
- requireNonNull(input, "null input");
-
- while (input.hasRemaining() && state != State.FINISHED) {
- switch (state) {
- case STATUS_LINE:
- readResumeStatusLine(input);
- break;
- case STATUS_LINE_FOUND_CR:
- readStatusLineFeed(input);
- break;
- case STATUS_LINE_END:
- maybeStartHeaders(input);
- break;
- case STATUS_LINE_END_CR:
- maybeEndHeaders(input);
- break;
- case HEADER:
- readResumeHeader(input);
- break;
- // fallthrough
- case HEADER_FOUND_CR:
- case HEADER_FOUND_LF:
- resumeOrLF(input);
- break;
- case HEADER_FOUND_CR_LF:
- resumeOrSecondCR(input);
- break;
- case HEADER_FOUND_CR_LF_CR:
- resumeOrEndHeaders(input);
- break;
- default:
- throw new InternalError(
- "Unexpected state: " + String.valueOf(state));
- }
- }
-
- return state == State.FINISHED;
- }
-
- private void readResumeStatusLine(ByteBuffer input) {
- char c = 0;
- while (input.hasRemaining() && (c =(char)input.get()) != CR) {
- sb.append(c);
- }
-
- if (c == CR) {
- state = State.STATUS_LINE_FOUND_CR;
- }
- }
-
- private void readStatusLineFeed(ByteBuffer input) throws ProtocolException {
- char c = (char)input.get();
- if (c != LF) {
- throw protocolException("Bad trailing char, \"%s\", when parsing status-line, \"%s\"",
- c, sb.toString());
- }
-
- statusLine = sb.toString();
- sb = new StringBuilder();
- if (!statusLine.startsWith("HTTP/1.")) {
- throw protocolException("Invalid status line: \"%s\"", statusLine);
- }
- if (statusLine.length() < 12) {
- throw protocolException("Invalid status line: \"%s\"", statusLine);
- }
- responseCode = Integer.parseInt(statusLine.substring(9, 12));
-
- state = State.STATUS_LINE_END;
- }
-
- private void maybeStartHeaders(ByteBuffer input) {
- assert state == State.STATUS_LINE_END;
- assert sb.length() == 0;
- char c = (char)input.get();
- if (c == CR) {
- state = State.STATUS_LINE_END_CR;
- } else {
- sb.append(c);
- state = State.HEADER;
- }
- }
-
- private void maybeEndHeaders(ByteBuffer input) throws ProtocolException {
- assert state == State.STATUS_LINE_END_CR;
- assert sb.length() == 0;
- char c = (char)input.get();
- if (c == LF) {
- headers = ImmutableHeaders.of(privateMap);
- privateMap = null;
- state = State.FINISHED; // no headers
- } else {
- throw protocolException("Unexpected \"%s\", after status-line CR", c);
- }
- }
-
- private void readResumeHeader(ByteBuffer input) {
- assert state == State.HEADER;
- assert input.hasRemaining();
- while (input.hasRemaining()) {
- char c = (char)input.get();
- if (c == CR) {
- state = State.HEADER_FOUND_CR;
- break;
- } else if (c == LF) {
- state = State.HEADER_FOUND_LF;
- break;
- }
-
- if (c == HT)
- c = SP;
- sb.append(c);
- }
- }
-
- private void addHeaderFromString(String headerString) {
- assert sb.length() == 0;
- int idx = headerString.indexOf(':');
- if (idx == -1)
- return;
- String name = headerString.substring(0, idx).trim();
- if (name.isEmpty())
- return;
- String value = headerString.substring(idx + 1, headerString.length()).trim();
-
- privateMap.computeIfAbsent(name.toLowerCase(Locale.US),
- k -> new ArrayList<>()).add(value);
- }
-
- private void resumeOrLF(ByteBuffer input) {
- assert state == State.HEADER_FOUND_CR || state == State.HEADER_FOUND_LF;
- char c = (char)input.get();
- if (c == LF && state == State.HEADER_FOUND_CR) {
- // header value will be flushed by
- // resumeOrSecondCR if next line does not
- // begin by SP or HT
- state = State.HEADER_FOUND_CR_LF;
- } else if (c == SP || c == HT) {
- sb.append(SP); // parity with MessageHeaders
- state = State.HEADER;
- } else {
- sb = new StringBuilder();
- sb.append(c);
- state = State.HEADER;
- }
- }
-
- private void resumeOrSecondCR(ByteBuffer input) {
- assert state == State.HEADER_FOUND_CR_LF;
- char c = (char)input.get();
- if (c == CR) {
- if (sb.length() > 0) {
- // no continuation line - flush
- // previous header value.
- String headerString = sb.toString();
- sb = new StringBuilder();
- addHeaderFromString(headerString);
- }
- state = State.HEADER_FOUND_CR_LF_CR;
- } else if (c == SP || c == HT) {
- assert sb.length() != 0;
- sb.append(SP); // continuation line
- state = State.HEADER;
- } else {
- if (sb.length() > 0) {
- // no continuation line - flush
- // previous header value.
- String headerString = sb.toString();
- sb = new StringBuilder();
- addHeaderFromString(headerString);
- }
- sb.append(c);
- state = State.HEADER;
- }
- }
-
- private void resumeOrEndHeaders(ByteBuffer input) throws ProtocolException {
- assert state == State.HEADER_FOUND_CR_LF_CR;
- char c = (char)input.get();
- if (c == LF) {
- state = State.FINISHED;
- headers = ImmutableHeaders.of(privateMap);
- privateMap = null;
- } else {
- throw protocolException("Unexpected \"%s\", after CR LF CR", c);
- }
- }
-
- private ProtocolException protocolException(String format, Object... args) {
- return new ProtocolException(format(format, args));
- }
-}