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419364b5a9
List all the HTTP status codes in the REST API tech doc. Only use 403 Forbidden for requests originating from a disallowed origin (ie, not localhost). - Return 400 for missing, unknown, duplicate and out-of-order form parts in POST requests. - Return 415 Unsupported Media Type for unsupported form part Content-Disposition and Content-Type (including unsupported charset). - Return 414 Request-URI Too Long for any buffer exhaustion while parsing request. - Return 419 Authentication Timeout for missing crypto secret.
683 lines
27 KiB
Java
683 lines
27 KiB
Java
/**
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* Copyright (C) 2014 Serval Project Inc.
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*
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* This file is part of Serval Software (http://www.servalproject.org)
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*
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* Serval Software is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this source code; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package org.servalproject.servaldna.rhizome;
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import java.lang.StringBuilder;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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import java.lang.reflect.InvocationTargetException;
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import java.util.Map;
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import java.util.List;
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import java.io.IOException;
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import java.io.PrintStream;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.net.URL;
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import java.net.HttpURLConnection;
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import org.servalproject.json.JSONTokeniser;
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import org.servalproject.json.JSONInputException;
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import org.servalproject.servaldna.BundleId;
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import org.servalproject.servaldna.FileHash;
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import org.servalproject.servaldna.BundleKey;
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import org.servalproject.servaldna.SubscriberId;
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import org.servalproject.servaldna.BundleSecret;
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import org.servalproject.servaldna.ServalDHttpConnectionFactory;
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import org.servalproject.servaldna.ServalDInterfaceException;
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import org.servalproject.servaldna.ServalDFailureException;
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import org.servalproject.servaldna.ServalDNotImplementedException;
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public class RhizomeCommon
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{
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private static class Status {
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InputStream input_stream;
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public int http_status_code;
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public String http_status_message;
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RhizomeBundleStatus bundle_status_code;
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String bundle_status_message;
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RhizomePayloadStatus payload_status_code;
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String payload_status_message;
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}
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private static void dumpStatus(Status status, PrintStream out)
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{
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out.println("input_stream=" + status.input_stream);
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out.println("http_status_code=" + status.http_status_code);
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out.println("http_status_message=" + status.http_status_message);
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out.println("bundle_status_code=" + status.bundle_status_code);
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out.println("bundle_status_message=" + status.bundle_status_message);
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out.println("payload_status_code=" + status.payload_status_code);
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out.println("payload_status_message=" + status.payload_status_message);
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}
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protected static Status receiveResponse(HttpURLConnection conn, int expected_response_code) throws IOException, ServalDInterfaceException
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{
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int[] expected_response_codes = { expected_response_code };
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return receiveResponse(conn, expected_response_codes);
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}
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protected static Status receiveResponse(HttpURLConnection conn, int[] expected_response_codes) throws IOException, ServalDInterfaceException
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{
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Status status = new Status();
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status.http_status_code = conn.getResponseCode();
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status.http_status_message = conn.getResponseMessage();
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for (int code: expected_response_codes) {
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if (status.http_status_code == code) {
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status.input_stream = conn.getInputStream();
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return status;
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}
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}
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if (!conn.getContentType().equals("application/json"))
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throw new ServalDInterfaceException("unexpected HTTP Content-Type: " + conn.getContentType());
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if (status.http_status_code >= 300) {
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JSONTokeniser json = new JSONTokeniser(new InputStreamReader(conn.getErrorStream(), "UTF-8"));
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decodeRestfulStatus(status, json);
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}
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switch (status.http_status_code) {
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case HttpURLConnection.HTTP_FORBIDDEN: // for crypto failure (missing secret)
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case HttpURLConnection.HTTP_NOT_FOUND: // for unknown BID
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case 419: // Authentication Timeout, for missing secret
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case 422: // Unprocessable Entity, for invalid/malformed manifest
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case 423: // Locked, for database busy
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case 429: // Too Many Requests, for out of manifests
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return status;
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case HttpURLConnection.HTTP_NOT_IMPLEMENTED:
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throw new ServalDNotImplementedException(status.http_status_message);
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}
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throw new ServalDInterfaceException("unexpected HTTP response: " + status.http_status_code + " " + status.http_status_message);
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}
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protected static ServalDInterfaceException unexpectedResponse(HttpURLConnection conn, Status status)
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{
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return new ServalDInterfaceException(
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"unexpected Rhizome failure, " + quoteString(status.http_status_message)
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+ (status.bundle_status_code == null ? "" : ", " + status.bundle_status_code)
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+ (status.bundle_status_message == null ? "" : " " + quoteString(status.bundle_status_message))
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+ (status.payload_status_code == null ? "" : ", " + status.payload_status_code)
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+ (status.payload_status_message == null ? "" : " " + quoteString(status.payload_status_message))
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+ " from " + conn.getURL()
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);
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}
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protected static JSONTokeniser receiveRestfulResponse(HttpURLConnection conn, int expected_response_code) throws IOException, ServalDInterfaceException
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{
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int[] expected_response_codes = { expected_response_code };
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return receiveRestfulResponse(conn, expected_response_codes);
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}
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protected static JSONTokeniser receiveRestfulResponse(HttpURLConnection conn, int[] expected_response_codes) throws IOException, ServalDInterfaceException
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{
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Status status = receiveResponse(conn, expected_response_codes);
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if (!conn.getContentType().equals("application/json"))
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throw new ServalDInterfaceException("unexpected HTTP Content-Type: " + conn.getContentType());
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return new JSONTokeniser(new InputStreamReader(status.input_stream, "UTF-8"));
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}
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protected static void decodeHeaderBundleStatus(Status status, HttpURLConnection conn) throws ServalDInterfaceException
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{
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status.bundle_status_code = header(conn, "Serval-Rhizome-Result-Bundle-Status-Code", RhizomeBundleStatus.class);
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status.bundle_status_message = headerString(conn, "Serval-Rhizome-Result-Bundle-Status-Message");
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}
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protected static void decodeHeaderPayloadStatus(Status status, HttpURLConnection conn) throws ServalDInterfaceException
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{
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status.payload_status_code = header(conn, "Serval-Rhizome-Result-Payload-Status-Code", RhizomePayloadStatus.class);
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status.payload_status_message = headerString(conn, "Serval-Rhizome-Result-Payload-Status-Message");
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}
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protected static void decodeHeaderPayloadStatusOrNull(Status status, HttpURLConnection conn) throws ServalDInterfaceException
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{
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status.payload_status_code = headerOrNull(conn, "Serval-Rhizome-Result-Payload-Status-Code", RhizomePayloadStatus.class);
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status.payload_status_message = headerStringOrNull(conn, "Serval-Rhizome-Result-Payload-Status-Message");
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}
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protected static void decodeRestfulStatus(Status status, JSONTokeniser json) throws IOException, ServalDInterfaceException
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{
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try {
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json.consume(JSONTokeniser.Token.START_OBJECT);
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json.consume("http_status_code");
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json.consume(JSONTokeniser.Token.COLON);
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int hs = json.consume(Integer.class);
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json.consume(JSONTokeniser.Token.COMMA);
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if (status.http_status_code == 0)
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status.http_status_code = json.consume(Integer.class);
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else if (hs != status.http_status_code)
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throw new ServalDInterfaceException("JSON/header conflict"
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+ ", http_status_code=" + hs
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+ " but HTTP response code is " + status.http_status_code);
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json.consume("http_status_message");
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json.consume(JSONTokeniser.Token.COLON);
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status.http_status_message = json.consume(String.class);
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Object tok = json.nextToken();
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while (tok == JSONTokeniser.Token.COMMA) {
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String label = json.consume(String.class);
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json.consume(JSONTokeniser.Token.COLON);
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if (label.equals("rhizome_bundle_status_code")) {
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RhizomeBundleStatus bs = RhizomeBundleStatus.fromCode(json.consume(Integer.class));
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if (status.bundle_status_code == null)
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status.bundle_status_code = bs;
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else if (status.bundle_status_code != bs)
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throw new ServalDInterfaceException("JSON/header conflict"
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+ ", rhizome_bundle_status_code=" + bs.code
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+ " but Serval-Rhizome-Result-Bundle-Status-Code: " + status.bundle_status_code.code);
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}
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else if (label.equals("rhizome_bundle_status_message")) {
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String message = json.consume(String.class);
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if (status.bundle_status_message == null)
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status.bundle_status_message = message;
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else if (!status.bundle_status_message.equals(message))
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throw new ServalDInterfaceException("JSON/header conflict"
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+ ", rhizome_bundle_status_message=" + message
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+ " but Serval-Rhizome-Result-Bundle-Status-Message: " + status.bundle_status_message);
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}
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else if (label.equals("rhizome_payload_status_code")) {
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RhizomePayloadStatus bs = RhizomePayloadStatus.fromCode(json.consume(Integer.class));
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if (status.payload_status_code == null)
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status.payload_status_code = bs;
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else if (status.payload_status_code != bs)
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throw new ServalDInterfaceException("JSON/header conflict"
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+ ", rhizome_payload_status_code=" + bs.code
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+ " but Serval-Rhizome-Result-Payload-Status-Code: " + status.payload_status_code.code);
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}
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else if (label.equals("rhizome_payload_status_message")) {
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String message = json.consume(String.class);
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if (status.payload_status_message == null)
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status.payload_status_message = message;
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else if (!status.payload_status_message.equals(message))
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throw new ServalDInterfaceException("JSON/header conflict"
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+ ", rhizome_payload_status_message=" + message
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+ " but Serval-Rhizome-Result-Payload-Status-Code: " + status.payload_status_message);
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}
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else
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json.unexpected(label);
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tok = json.nextToken();
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}
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json.match(tok, JSONTokeniser.Token.END_OBJECT);
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json.consume(JSONTokeniser.Token.EOF);
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}
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catch (JSONInputException e) {
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throw new ServalDInterfaceException("malformed JSON status response", e);
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}
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}
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public static RhizomeManifestBundle rhizomeManifest(ServalDHttpConnectionFactory connector, BundleId bid)
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throws IOException, ServalDInterfaceException
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{
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HttpURLConnection conn = connector.newServalDHttpConnection("/restful/rhizome/" + bid.toHex() + ".rhm");
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conn.connect();
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Status status = RhizomeCommon.receiveResponse(conn, HttpURLConnection.HTTP_OK);
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try {
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dumpHeaders(conn, System.err);
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decodeHeaderBundleStatus(status, conn);
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dumpStatus(status, System.err);
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switch (status.bundle_status_code) {
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case NEW:
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return null;
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case SAME:
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if (!conn.getContentType().equals("rhizome-manifest/text"))
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throw new ServalDInterfaceException("unexpected HTTP Content-Type: " + conn.getContentType());
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RhizomeManifest manifest = RhizomeManifest.fromTextFormat(status.input_stream);
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BundleExtra extra = bundleExtraFromHeaders(conn);
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return new RhizomeManifestBundle(manifest, extra.rowId, extra.insertTime, extra.author, extra.secret);
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case ERROR:
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throw new ServalDFailureException("received rhizome_bundle_status_code=ERROR(-1) from " + conn.getURL());
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}
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}
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catch (RhizomeManifestParseException e) {
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throw new ServalDInterfaceException("malformed manifest from daemon", e);
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}
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finally {
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if (status.input_stream != null)
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status.input_stream.close();
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}
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throw unexpectedResponse(conn, status);
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}
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public static RhizomePayloadRawBundle rhizomePayloadRaw(ServalDHttpConnectionFactory connector, BundleId bid)
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throws IOException, ServalDInterfaceException
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{
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HttpURLConnection conn = connector.newServalDHttpConnection("/restful/rhizome/" + bid.toHex() + "/raw.bin");
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conn.connect();
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Status status = RhizomeCommon.receiveResponse(conn, HttpURLConnection.HTTP_OK);
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try {
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dumpHeaders(conn, System.err);
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decodeHeaderBundleStatus(status, conn);
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dumpStatus(status, System.err);
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switch (status.bundle_status_code) {
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case ERROR:
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throw new ServalDFailureException("received rhizome_bundle_status_code=ERROR(-1) from " + conn.getURL());
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case NEW: // No manifest
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return null;
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case SAME:
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decodeHeaderPayloadStatus(status, conn);
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switch (status.payload_status_code) {
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case ERROR:
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throw new ServalDFailureException("received rhizome_payload_status_code=ERROR(-1) from " + conn.getURL());
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case NEW:
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// The manifest is known but the payload is unavailable, so return a bundle
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// object with a null input stream.
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// FALL THROUGH
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case EMPTY:
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if (status.input_stream != null) {
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status.input_stream.close();
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status.input_stream = null;
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}
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// FALL THROUGH
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case STORED: {
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if (status.input_stream != null && !conn.getContentType().equals("application/octet-stream"))
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throw new ServalDInterfaceException("unexpected HTTP Content-Type: " + conn.getContentType());
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RhizomeManifest manifest = manifestFromHeaders(conn);
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BundleExtra extra = bundleExtraFromHeaders(conn);
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RhizomePayloadRawBundle ret = new RhizomePayloadRawBundle(manifest, status.input_stream, extra.rowId, extra.insertTime, extra.author, extra.secret);
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status.input_stream = null; // don't close when we return
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return ret;
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}
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}
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}
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}
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finally {
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if (status.input_stream != null)
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status.input_stream.close();
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}
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throw unexpectedResponse(conn, status);
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}
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public static RhizomePayloadBundle rhizomePayload(ServalDHttpConnectionFactory connector, BundleId bid)
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throws IOException, ServalDInterfaceException, RhizomeDecryptionException
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{
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HttpURLConnection conn = connector.newServalDHttpConnection("/restful/rhizome/" + bid.toHex() + "/decrypted.bin");
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conn.connect();
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Status status = RhizomeCommon.receiveResponse(conn, HttpURLConnection.HTTP_OK);
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try {
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dumpHeaders(conn, System.err);
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decodeHeaderBundleStatus(status, conn);
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dumpStatus(status, System.err);
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switch (status.bundle_status_code) {
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case ERROR:
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throw new ServalDFailureException("received rhizome_bundle_status_code=ERROR(-1) from " + conn.getURL());
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case NEW: // No manifest
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return null;
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case SAME:
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decodeHeaderPayloadStatus(status, conn);
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switch (status.payload_status_code) {
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case ERROR:
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throw new ServalDFailureException("received rhizome_payload_status_code=ERROR(-1) from " + conn.getURL());
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case CRYPTO_FAIL:
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throw new RhizomeDecryptionException(conn.getURL());
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case NEW:
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// The manifest is known but the payload is unavailable, so return a bundle
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// object with a null input stream.
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// FALL THROUGH
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case EMPTY:
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if (status.input_stream != null) {
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status.input_stream.close();
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status.input_stream = null;
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}
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// FALL THROUGH
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case STORED: {
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if (status.input_stream != null && !conn.getContentType().equals("application/octet-stream"))
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throw new ServalDInterfaceException("unexpected HTTP Content-Type: " + conn.getContentType());
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RhizomeManifest manifest = manifestFromHeaders(conn);
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BundleExtra extra = bundleExtraFromHeaders(conn);
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RhizomePayloadBundle ret = new RhizomePayloadBundle(manifest, status.input_stream, extra.rowId, extra.insertTime, extra.author, extra.secret);
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status.input_stream = null; // don't close when we return
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return ret;
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}
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}
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}
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}
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finally {
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if (status.input_stream != null)
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status.input_stream.close();
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}
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throw unexpectedResponse(conn, status);
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}
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public static RhizomeInsertBundle rhizomeInsert(ServalDHttpConnectionFactory connector,
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SubscriberId author,
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RhizomeIncompleteManifest manifest,
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BundleSecret secret)
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throws ServalDInterfaceException,
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IOException,
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RhizomeInvalidManifestException,
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RhizomeFakeManifestException,
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RhizomeInconsistencyException,
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RhizomeReadOnlyException,
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RhizomeEncryptionException
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{
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return rhizomeInsert(connector, author, manifest, secret, null, null);
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}
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public static RhizomeInsertBundle rhizomeInsert(ServalDHttpConnectionFactory connector,
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SubscriberId author,
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RhizomeIncompleteManifest manifest,
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BundleSecret secret,
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InputStream payloadStream,
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String fileName)
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throws ServalDInterfaceException,
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IOException,
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RhizomeInvalidManifestException,
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RhizomeFakeManifestException,
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RhizomeInconsistencyException,
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RhizomeReadOnlyException,
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RhizomeEncryptionException
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{
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HttpURLConnection conn = connector.newServalDHttpConnection("/restful/rhizome/insert");
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String boundary = Long.toHexString(System.currentTimeMillis());
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conn.setRequestMethod("POST");
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conn.setDoOutput(true);
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conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);
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conn.connect();
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OutputStream ost = conn.getOutputStream();
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PrintStream wr = new PrintStream(ost, false, "UTF-8");
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wr.print(new Object(){}.getClass().getEnclosingClass().getName());
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if (author != null) {
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wr.print("\r\n--" + boundary + "\r\n");
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wr.print("Content-Disposition: form-data; name=\"bundle-author\"\r\n");
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wr.print("Content-Type: serval-mesh/sid\r\n");
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wr.print("Content-Transfer-Encoding: hex\r\n");
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wr.print("\r\n");
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wr.print(author.toHex());
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}
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if (secret != null) {
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wr.print("\r\n--" + boundary + "\r\n");
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wr.print("Content-Disposition: form-data; name=\"bundle-secret\"\r\n");
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wr.print("Content-Type: rhizome/bundle-secret\r\n");
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wr.print("Content-Transfer-Encoding: hex\r\n");
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wr.print("\r\n");
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wr.print(secret.toHex());
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}
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wr.print("\r\n--" + boundary + "\r\n");
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wr.print("Content-Disposition: form-data; name=\"manifest\"\r\n");
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wr.print("Content-Type: rhizome/manifest; format=\"text+binarysig\"\r\n");
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wr.print("Content-Transfer-Encoding: binary\r\n");
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wr.print("\r\n");
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wr.flush();
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manifest.toTextFormat(ost);
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if (payloadStream != null) {
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wr.print("\r\n--" + boundary + "\r\n");
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wr.print("Content-Disposition: form-data; name=\"payload\"");
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if (fileName != null) {
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wr.print("; filename=");
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wr.print(quoteString(fileName));
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}
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wr.print("\r\n");
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wr.print("Content-Type: application/octet-stream\r\n");
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wr.print("Content-Transfer-Encoding: binary\r\n");
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|
wr.print("\r\n");
|
|
wr.flush();
|
|
byte[] buffer = new byte[4096];
|
|
int n;
|
|
while ((n = payloadStream.read(buffer)) > 0)
|
|
ost.write(buffer, 0, n);
|
|
}
|
|
wr.print("\r\n--" + boundary + "--\r\n");
|
|
wr.close();
|
|
int[] expected_response_codes = { HttpURLConnection.HTTP_OK, HttpURLConnection.HTTP_CREATED };
|
|
Status status = RhizomeCommon.receiveResponse(conn, expected_response_codes);
|
|
try {
|
|
dumpHeaders(conn, System.err);
|
|
decodeHeaderPayloadStatusOrNull(status, conn);
|
|
if (status.payload_status_code != null) {
|
|
switch (status.payload_status_code) {
|
|
case ERROR:
|
|
dumpStatus(status, System.err);
|
|
throw new ServalDFailureException("received Rhizome payload_status=ERROR " + quoteString(status.payload_status_message) + " from " + conn.getURL());
|
|
case EMPTY:
|
|
case NEW:
|
|
case STORED:
|
|
break;
|
|
case TOO_BIG:
|
|
case EVICTED:
|
|
dumpStatus(status, System.err);
|
|
return null;
|
|
case WRONG_SIZE:
|
|
case WRONG_HASH:
|
|
dumpStatus(status, System.err);
|
|
throw new RhizomeInconsistencyException(status.payload_status_message, conn.getURL());
|
|
case CRYPTO_FAIL:
|
|
dumpStatus(status, System.err);
|
|
throw new RhizomeEncryptionException(status.payload_status_message, conn.getURL());
|
|
}
|
|
}
|
|
decodeHeaderBundleStatus(status, conn);
|
|
dumpStatus(status, System.err);
|
|
switch (status.bundle_status_code) {
|
|
case ERROR:
|
|
throw new ServalDFailureException("received Rhizome bundle_status=ERROR " + quoteString(status.bundle_status_message) + " from " + conn.getURL());
|
|
case NEW:
|
|
case SAME:
|
|
case DUPLICATE:
|
|
case OLD:
|
|
case NO_ROOM: {
|
|
if (!conn.getContentType().equals("rhizome-manifest/text"))
|
|
throw new ServalDInterfaceException("unexpected HTTP Content-Type " + conn.getContentType() + " from " + conn.getURL());
|
|
RhizomeManifest returned_manifest = RhizomeManifest.fromTextFormat(status.input_stream);
|
|
BundleExtra extra = bundleExtraFromHeaders(conn);
|
|
return new RhizomeInsertBundle(status.bundle_status_code, returned_manifest, extra.rowId, extra.insertTime, extra.author, extra.secret);
|
|
}
|
|
case INVALID:
|
|
throw new RhizomeInvalidManifestException(status.bundle_status_message, conn.getURL());
|
|
case FAKE:
|
|
throw new RhizomeFakeManifestException(status.bundle_status_message, conn.getURL());
|
|
case INCONSISTENT:
|
|
throw new RhizomeInconsistencyException(status.bundle_status_message, conn.getURL());
|
|
case READONLY:
|
|
throw new RhizomeReadOnlyException(status.bundle_status_message, conn.getURL());
|
|
}
|
|
}
|
|
catch (RhizomeManifestParseException e) {
|
|
throw new ServalDInterfaceException("malformed manifest from daemon", e);
|
|
}
|
|
finally {
|
|
if (status.input_stream != null)
|
|
status.input_stream.close();
|
|
}
|
|
dumpStatus(status, System.err);
|
|
throw unexpectedResponse(conn, status);
|
|
}
|
|
|
|
private static void dumpHeaders(HttpURLConnection conn, PrintStream out)
|
|
{
|
|
for (Map.Entry<String,List<String>> e: conn.getHeaderFields().entrySet())
|
|
for (String v: e.getValue())
|
|
out.println("received header " + e.getKey() + ": " + v);
|
|
}
|
|
|
|
private static RhizomeManifest manifestFromHeaders(HttpURLConnection conn) throws ServalDInterfaceException
|
|
{
|
|
BundleId id = header(conn, "Serval-Rhizome-Bundle-Id", BundleId.class);
|
|
long version = headerUnsignedLong(conn, "Serval-Rhizome-Bundle-Version");
|
|
long filesize = headerUnsignedLong(conn, "Serval-Rhizome-Bundle-Filesize");
|
|
FileHash filehash = filesize == 0 ? null : header(conn, "Serval-Rhizome-Bundle-Filehash", FileHash.class);
|
|
SubscriberId sender = headerOrNull(conn, "Serval-Rhizome-Bundle-Sender", SubscriberId.class);
|
|
SubscriberId recipient = headerOrNull(conn, "Serval-Rhizome-Bundle-Recipient", SubscriberId.class);
|
|
BundleKey BK = headerOrNull(conn, "Serval-Rhizome-Bundle-BK", BundleKey.class);
|
|
Integer crypt = headerIntegerOrNull(conn, "Serval-Rhizome-Bundle-Crypt");
|
|
Long tail = headerUnsignedLongOrNull(conn, "Serval-Rhizome-Bundle-Tail");
|
|
Long date = headerUnsignedLongOrNull(conn, "Serval-Rhizome-Bundle-Date");
|
|
String service = conn.getHeaderField("Serval-Rhizome-Bundle-Service");
|
|
String name = headerQuotedStringOrNull(conn, "Serval-Rhizome-Bundle-Name");
|
|
return new RhizomeManifest(id, version, filesize, filehash, sender, recipient, BK, crypt, tail, date, service, name);
|
|
}
|
|
|
|
private static class BundleExtra {
|
|
public Long rowId;
|
|
public Long insertTime;
|
|
public SubscriberId author;
|
|
public BundleSecret secret;
|
|
}
|
|
|
|
private static BundleExtra bundleExtraFromHeaders(HttpURLConnection conn) throws ServalDInterfaceException
|
|
{
|
|
BundleExtra extra = new BundleExtra();
|
|
extra.rowId = headerUnsignedLongOrNull(conn, "Serval-Rhizome-Bundle-Rowid");
|
|
extra.insertTime = headerUnsignedLongOrNull(conn, "Serval-Rhizome-Bundle-Inserttime");
|
|
extra.author = headerOrNull(conn, "Serval-Rhizome-Bundle-Author", SubscriberId.class);
|
|
extra.secret = headerOrNull(conn, "Serval-Rhizome-Bundle-Secret", BundleSecret.class);
|
|
return extra;
|
|
}
|
|
|
|
private static String quoteString(String unquoted)
|
|
{
|
|
if (unquoted == null)
|
|
return "null";
|
|
StringBuilder b = new StringBuilder(unquoted.length() + 2);
|
|
b.append('"');
|
|
for (int i = 0; i < unquoted.length(); ++i) {
|
|
char c = unquoted.charAt(i);
|
|
if (c == '"' || c == '\\')
|
|
b.append('\\');
|
|
b.append(c);
|
|
}
|
|
b.append('"');
|
|
return b.toString();
|
|
}
|
|
|
|
private static String headerStringOrNull(HttpURLConnection conn, String header) throws ServalDInterfaceException
|
|
{
|
|
return conn.getHeaderField(header);
|
|
}
|
|
|
|
private static String headerString(HttpURLConnection conn, String header) throws ServalDInterfaceException
|
|
{
|
|
String str = headerStringOrNull(conn, header);
|
|
if (str == null)
|
|
throw new ServalDInterfaceException("missing header field: " + header);
|
|
return str;
|
|
}
|
|
|
|
private static String headerQuotedStringOrNull(HttpURLConnection conn, String header) throws ServalDInterfaceException
|
|
{
|
|
String quoted = conn.getHeaderField(header);
|
|
if (quoted == null)
|
|
return null;
|
|
if (quoted.length() == 0 || quoted.charAt(0) != '"')
|
|
throw new ServalDInterfaceException("malformed header field: " + header + ": missing quote at start of quoted-string");
|
|
boolean slosh = false;
|
|
boolean end = false;
|
|
StringBuilder b = new StringBuilder(quoted.length());
|
|
for (int i = 1; i < quoted.length(); ++i) {
|
|
char c = quoted.charAt(i);
|
|
if (end)
|
|
throw new ServalDInterfaceException("malformed header field: " + header + ": spurious character after quoted-string");
|
|
if (c < ' ' || c > '~')
|
|
throw new ServalDInterfaceException("malformed header field: " + header + ": invalid character in quoted-string");
|
|
if (slosh) {
|
|
b.append(c);
|
|
slosh = false;
|
|
}
|
|
else if (c == '"')
|
|
end = true;
|
|
else if (c == '\\')
|
|
slosh = true;
|
|
else
|
|
b.append(c);
|
|
}
|
|
if (!end)
|
|
throw new ServalDInterfaceException("malformed header field: " + header + ": missing quote at end of quoted-string");
|
|
return b.toString();
|
|
}
|
|
|
|
private static Integer headerIntegerOrNull(HttpURLConnection conn, String header) throws ServalDInterfaceException
|
|
{
|
|
String str = conn.getHeaderField(header);
|
|
if (str == null)
|
|
return null;
|
|
try {
|
|
return Integer.valueOf(str);
|
|
}
|
|
catch (NumberFormatException e) {
|
|
}
|
|
throw new ServalDInterfaceException("invalid header field: " + header + ": " + str);
|
|
}
|
|
|
|
private static Long headerUnsignedLongOrNull(HttpURLConnection conn, String header) throws ServalDInterfaceException
|
|
{
|
|
String str = conn.getHeaderField(header);
|
|
if (str == null)
|
|
return null;
|
|
try {
|
|
Long value = Long.valueOf(str);
|
|
if (value >= 0)
|
|
return value;
|
|
}
|
|
catch (NumberFormatException e) {
|
|
}
|
|
throw new ServalDInterfaceException("invalid header field: " + header + ": " + str);
|
|
}
|
|
|
|
private static long headerUnsignedLong(HttpURLConnection conn, String header) throws ServalDInterfaceException
|
|
{
|
|
Long value = headerUnsignedLongOrNull(conn, header);
|
|
if (value == null)
|
|
throw new ServalDInterfaceException("missing header field: " + header);
|
|
return value;
|
|
}
|
|
|
|
private static <T> T headerOrNull(HttpURLConnection conn, String header, Class<T> cls) throws ServalDInterfaceException
|
|
{
|
|
String str = conn.getHeaderField(header);
|
|
try {
|
|
try {
|
|
Constructor<T> constructor = cls.getConstructor(String.class);
|
|
if (str == null)
|
|
return null;
|
|
return constructor.newInstance(str);
|
|
}
|
|
catch (NoSuchMethodException e) {
|
|
}
|
|
try {
|
|
Method method = cls.getMethod("fromCode", Integer.TYPE);
|
|
if ((method.getModifiers() & Modifier.STATIC) != 0 && method.getReturnType() == cls) {
|
|
Integer integer = headerIntegerOrNull(conn, header);
|
|
if (integer == null)
|
|
return null;
|
|
return cls.cast(method.invoke(null, integer));
|
|
}
|
|
}
|
|
catch (NoSuchMethodException e) {
|
|
}
|
|
throw new ServalDInterfaceException("don't know how to instantiate: " + cls.getName());
|
|
}
|
|
catch (ServalDInterfaceException e) {
|
|
throw e;
|
|
}
|
|
catch (InvocationTargetException e) {
|
|
throw new ServalDInterfaceException("invalid header field: " + header + ": " + str, e.getTargetException());
|
|
}
|
|
catch (Exception e) {
|
|
throw new ServalDInterfaceException("invalid header field: " + header + ": " + str, e);
|
|
}
|
|
}
|
|
|
|
private static <T> T header(HttpURLConnection conn, String header, Class<T> cls) throws ServalDInterfaceException
|
|
{
|
|
T value = headerOrNull(conn, header, cls);
|
|
if (value == null)
|
|
throw new ServalDInterfaceException("missing header field: " + header);
|
|
return value;
|
|
}
|
|
|
|
}
|