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/**
* ============LICENSE_START====================================================
* org.onap.aaf
* ===========================================================================
* Copyright (c) 2018 AT&T Intellectual Property. 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.
* ============LICENSE_END====================================================
*
*/
package org.onap.aaf.auth.rserv;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.onap.aaf.misc.env.Trans;
/**
* Find Acceptable Paths and place them where TypeCode can evaluate.
*
* If there are more than one, TypeCode will choose based on "q" value
* @author Jonathan
*
* @param <TRANS>
*/
class Acceptor<TRANS extends Trans> {
private List<Pair<String, Pair<HttpCode<TRANS,?>, List<Pair<String, Object>>>>> types;
List<Pair<String, Pair<HttpCode<TRANS,?>, List<Pair<String, Object>>>>> acceptable;
public Acceptor(List<Pair<String, Pair<HttpCode<TRANS,?>, List<Pair<String, Object>>>>> types) {
this.types = types;
acceptable = new ArrayList<>();
}
private boolean eval(HttpCode<TRANS,?> code, String str, List<String> props) {
// int plus = str.indexOf('+');
// if (plus<0) {
boolean ok = false;
boolean any = false;
for (Pair<String, Pair<HttpCode<TRANS,?>, List<Pair<String, Object>>>> type : types) {
ok = true;
if (type.x.equals(str)) {
for (Iterator<String> iter = props.iterator();ok && iter.hasNext();) {
ok = props(type,iter.next(),iter.next());
}
if (ok) {
any = true;
acceptable.add(type);
}
}
}
// } else { // Handle Accepts with "+" as in application/xaml+xml
// int prev = str.indexOf('/')+1;
// String first = str.substring(0,prev);
// String nstr;
// while (prev!=0) {
// nstr = first + (plus<0?str.substring(prev):str.substring(prev,plus));
//
// for (Pair<String, Pair<HttpCode<TRANS,?>, List<Pair<String, Object>>>> type : types) {
// if (type.x.equals(nstr)) {
// acceptable.add(type);
// return type;
// }
// }
// prev = plus+1;
// plus=str.indexOf('+', prev);
// };
// }
return any;
}
/**
* Evaluate Properties
* @param type
* @param tag
* @param value
* @return
*/
private boolean props(Pair<String, Pair<HttpCode<TRANS,?>, List<Pair<String, Object>>>> type, String tag, String value) {
boolean rv = false;
if (type.y!=null) {
for (Pair<String,Object> prop : type.y.y){
if (tag.equals(prop.x)) {
if (tag.equals("charset")) {
return prop.x==null?false:prop.y.equals(value.toLowerCase()); // return True if Matched
} else if (tag.equals("version")) {
return prop.y.equals(new Version(value)); // Note: Version Class knows Minor Version encoding
} else if (tag.equals(Content.Q)) { // replace Q value
try {
type.y.y.get(0).y=Float.parseFloat(value);
} catch (NumberFormatException e) {
rv=false; // need to do something to make Sonar happy. But nothing to do.
}
return true;
} else {
return value.equals(prop.y);
}
}
}
}
return rv;
}
/**
* parse
*
* Note: I'm processing by index to avoid lots of memory creation, which speeds things
* up for this time critical section of code.
* @param code
* @param cntnt
* @return
*/
protected boolean parse(HttpCode<TRANS, ?> code, String cntnt) {
byte bytes[] = cntnt.getBytes();
int cis,cie=-1,cend;
int sis,sie,send;
String name;
ArrayList<String> props = new ArrayList<>();
do {
// Clear these in case more than one Semi
props.clear(); // on loop, do not want mixed properties
name=null;
cis = cie+1; // find comma start
while (cis<bytes.length && Character.isSpaceChar(bytes[cis]))++cis;
cie = cntnt.indexOf(',',cis); // find comma end
cend = cie<0?bytes.length:cie; // If no comma, set comma end to full length, else cie
while (cend>cis && Character.isSpaceChar(bytes[cend-1]))--cend;
// Start SEMIS
sie=cis-1;
do {
sis = sie+1; // semi start is one after previous end
while (sis<bytes.length && Character.isSpaceChar(bytes[sis]))++sis;
sie = cntnt.indexOf(';',sis);
send = sie>cend || sie<0?cend:sie; // if the Semicolon is after the comma, or non-existent, use comma end, else keep
while (send>sis && Character.isSpaceChar(bytes[send-1]))--send;
if (name==null) { // first entry in Comma set is the name, not a property
name = new String(bytes,sis,send-sis);
} else { // We've looped past the first Semi, now process as properties
// If there are additional elements (more entities within Semi Colons)
// apply Properties
int eq = cntnt.indexOf('=',sis);
if (eq>sis && eq<send) {
props.add(new String(bytes,sis,eq-sis));
props.add(new String(bytes,eq+1,send-(eq+1)));
}
}
// End Property
} while (sie<=cend && sie>=cis); // End SEMI processing
// Now evaluate Comma set and return if true
if (eval(code,name,props))return true; // else loop again to check next comma
} while (cie>=0); // loop to next comma
return false; // didn't get even one match
}
}
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