keycloakjar.org.apache.hc.client5.http.impl.auth.AuthChallengeParser Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of camunda-platform-7-keycloak-all Show documentation
Show all versions of camunda-platform-7-keycloak-all Show documentation
Camunda 7 Keycloak Identity Provider Plugin including all transitive dependencies
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* params;
ChallengeInt(final String schemeName) {
this.schemeName = schemeName;
this.params = new ArrayList<>();
}
@Override
public String toString() {
return "ChallengeInternal{" +
"schemeName='" + schemeName + '\'' +
", params=" + params +
'}';
}
}
/**
* Parses the given sequence of characters into a list of {@link AuthChallenge} elements.
*
* @param challengeType the type of challenge (target or proxy).
* @param buffer the sequence of characters to be parsed.
* @param cursor the parser cursor.
* @return a list of auth challenge elements.
*/
public List parse(
final ChallengeType challengeType, final CharSequence buffer, final ParserCursor cursor) throws ParseException {
tokenParser.skipWhiteSpace(buffer, cursor);
if (cursor.atEnd()) {
throw new ParseException("Malformed auth challenge");
}
final List internalChallenges = new ArrayList<>();
final String schemeName = tokenParser.parseToken(buffer, cursor, SPACE);
if (TextUtils.isBlank(schemeName)) {
throw new ParseException("Malformed auth challenge");
}
ChallengeInt current = new ChallengeInt(schemeName);
while (current != null) {
internalChallenges.add(current);
current = parseChallenge(buffer, cursor, current);
}
final List challenges = new ArrayList<>(internalChallenges.size());
for (final ChallengeInt internal : internalChallenges) {
final List params = internal.params;
String token68 = null;
if (params.size() == 1) {
final NameValuePair param = params.get(0);
if (param.getValue() == null) {
token68 = param.getName();
params.clear();
}
}
challenges.add(
new AuthChallenge(challengeType, internal.schemeName, token68, !params.isEmpty() ? params : null));
}
return challenges;
}
ChallengeInt parseChallenge(
final CharSequence buffer,
final ParserCursor cursor,
final ChallengeInt currentChallenge) throws ParseException {
for (;;) {
tokenParser.skipWhiteSpace(buffer, cursor);
if (cursor.atEnd()) {
return null;
}
final String token = parseToken(buffer, cursor);
if (TextUtils.isBlank(token)) {
throw new ParseException("Malformed auth challenge");
}
tokenParser.skipWhiteSpace(buffer, cursor);
// it gets really messy here
if (cursor.atEnd()) {
// at the end of the header
currentChallenge.params.add(new BasicNameValuePair(token, null));
} else {
char ch = buffer.charAt(cursor.getPos());
if (ch == EQUAL_CHAR) {
cursor.updatePos(cursor.getPos() + 1);
final String value = tokenParser.parseValue(buffer, cursor, DELIMITER);
tokenParser.skipWhiteSpace(buffer, cursor);
if (!cursor.atEnd()) {
ch = buffer.charAt(cursor.getPos());
if (ch == COMMA_CHAR) {
cursor.updatePos(cursor.getPos() + 1);
}
}
currentChallenge.params.add(new BasicNameValuePair(token, value));
} else if (ch == COMMA_CHAR) {
cursor.updatePos(cursor.getPos() + 1);
currentChallenge.params.add(new BasicNameValuePair(token, null));
} else {
// the token represents new challenge
if (currentChallenge.params.isEmpty()) {
throw new ParseException("Malformed auth challenge");
}
return new ChallengeInt(token);
}
}
}
}
String parseToken(final CharSequence buf, final ParserCursor cursor) {
final StringBuilder dst = new StringBuilder();
while (!cursor.atEnd()) {
int pos = cursor.getPos();
char current = buf.charAt(pos);
if (TERMINATORS.get(current)) {
// Here it gets really ugly
if (current == EQUAL_CHAR) {
// it can be a start of a parameter value or token68 padding
// Look ahead and see if there are more '=' or at end of buffer
if (pos + 1 < cursor.getUpperBound() && buf.charAt(pos + 1) != EQUAL_CHAR) {
break;
}
do {
dst.append(current);
pos++;
cursor.updatePos(pos);
if (cursor.atEnd()) {
break;
}
current = buf.charAt(pos);
} while (current == EQUAL_CHAR);
} else {
break;
}
} else {
dst.append(current);
cursor.updatePos(pos + 1);
}
}
return dst.toString();
}
}