2 * ============LICENSE_START====================================================
4 * ===========================================================================
5 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
6 * ===========================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END====================================================
22 package org.onap.aaf.auth.rserv;
24 import java.util.List;
26 import org.onap.aaf.misc.env.Trans;
31 * A Class to hold Service "ContentTypes", and to match incoming "Accept" types from HTTP.
33 * This is a multi-use class built to use the same Parser for ContentTypes and Accept.
35 * Thus, you would create and use "Content.Type" within your service, and use it to match
36 * Accept Strings. What is returned is an Integer (for faster processing), which can be
37 * used in a switch statement to act on match different Actions. The server should
38 * know which behaviors match.
40 * "bestMatch" returns an integer for the best match, or -1 if no matches.
45 public abstract class Content<TRANS extends Trans> {
46 public static final String Q = "q";
47 protected abstract Pair<String,Pair<HttpCode<TRANS,?>,List<Pair<String,Object>>>> types(HttpCode<TRANS,?> code, String str);
48 protected abstract boolean props(Pair<String, Pair<HttpCode<TRANS,?>,List<Pair<String,Object>>>> type, String tag, String value);
51 * Parse a Content-Type/Accept. As found, call "types" and "props", which do different
52 * things depending on if it's a Content-Type or Accepts.
54 * For Content-Type, it builds a tree suitable for Comparison
55 * For Accepts, it compares against the tree, and builds an acceptable type list
57 * Since this parse code is used for every incoming HTTP transaction, I have removed the implementation
58 * that uses String.split, and replaced with integers evaluating the Byte array. This results
59 * in only the necessary strings created, resulting in 1/3 better speed, and less
67 protected boolean parse(HttpCode<TRANS,?> code, String cntnt) {
68 byte bytes[] = cntnt.getBytes();
69 boolean contType=false,contProp=true;
74 cie = cntnt.indexOf(',',cis);
75 cend = cie<0?bytes.length:cie;
78 Pair<String, Pair<HttpCode<TRANS,?>, List<Pair<String, Object>>>> me = null;
81 sie = cntnt.indexOf(';',sis);
82 send = sie>cend || sie<0?cend:sie;
84 String semi = new String(bytes,sis,send-sis);
85 // trans.checkpoint(semi);
86 // Look at first entity within comma group
87 // Is this an acceptable Type?
90 sie=-1; // skip the rest of the processing... not a type
94 } else { // We've looped past the first Semi, now process as properties
95 // If there are additional elements (more entities within Semi Colons)
97 int eq = cntnt.indexOf('=',sis);
98 if (eq>sis && eq<send) {
99 String tag = new String(bytes,sis,eq-sis);
100 String value = new String(bytes,eq+1,send-(eq+1));
101 // trans.checkpoint(" Prop " + tag + "=" + value);
102 boolean bool = props(me,tag,value);
109 } while (sie<=cend && sie>=cis);
112 return contType && contProp; // for use in finds, True if a type found AND all props matched