} else {
qop = QOP_MISSING;
}
if (qop == QOP_UNKNOWN) {
throw new AuthenticationException("None of the qop methods is supported: " + qoplist);
}
// If an algorithm is not specified, default to MD5.
if (algorithm == null) {
algorithm = "MD5";
}
String charset = getParameter("charset");
if (charset == null) {
charset = "ISO-8859-1";
}
String digAlg = algorithm;
if (digAlg.equalsIgnoreCase("MD5-sess")) {
digAlg = "MD5";
}
MessageDigest digester;
try {
digester = createMessageDigest(digAlg);
} catch (UnsupportedDigestAlgorithmException ex) {
throw new AuthenticationException("Unsuppported digest algorithm: " + digAlg);
}
String uname = credentials.getUserPrincipal().getName();
String pwd = credentials.getPassword();
if (nonce.equals(this.lastNonce)) {
nounceCount++;
} else {
nounceCount = 1;
cnonce = null;
lastNonce = nonce;
}
StringBuilder sb = new StringBuilder(256);
Formatter formatter = new Formatter(sb, Locale.US);
formatter.format("%08x", nounceCount);
String nc = sb.toString();
if (cnonce == null) {
cnonce = createCnonce();
}
a1 = null;
a2 = null;
// 3.2.2.2: Calculating digest
if (algorithm.equalsIgnoreCase("MD5-sess")) {
// H( unq(username-value) ":" unq(realm-value) ":" passwd )
// ":" unq(nonce-value)
// ":" unq(cnonce-value)
// calculated one per session
sb.setLength(0);
sb.append(uname).append(':').append(realm).append(':').append(pwd);
String checksum = encode(digester.digest(EncodingUtils.getBytes(sb.toString(), charset)));
sb.setLength(0);
sb.append(checksum).append(':').append(nonce).append(':').append(cnonce);
a1 = sb.toString();
} else {
// unq(username-value) ":" unq(realm-value) ":" passwd
sb.setLength(0);
sb.append(uname).append(':').append(realm).append(':').append(pwd);
a1 = sb.toString();
}
String hasha1 = encode(digester.digest(EncodingUtils.getBytes(a1, charset)));
if (qop == QOP_AUTH) {
// Method ":" digest-uri-value
a2 = method + ':' + uri;
} else if (qop == QOP_AUTH_INT) {
// Method ":" digest-uri-value ":" H(entity-body)
HttpEntity entity = null;
if (request instanceof HttpEntityEnclosingRequest) {
entity = ((HttpEntityEnclosingRequest) request).getEntity();
}
if (entity != null && !entity.isRepeatable()) {
// If the entity is not repeatable, try falling back onto QOP_AUTH
if (qopset.contains("auth")) {
qop = QOP_AUTH;
a2 = method + ':' + uri;
} else {
throw new AuthenticationException("Qop auth-int cannot be used with " +
"a non-repeatable entity");
}
} else {
HttpEntityDigester entityDigester = new HttpEntityDigester(digester);
try {
if (entity != null) {
entity.writeTo(entityDigester);
}
entityDigester.close();
} catch (IOException ex) {
throw new AuthenticationException("I/O error reading entity content", ex);
}
a2 = method + ':' + uri + ':' + encode(entityDigester.getDigest());
}
} else {
a2 = method + ':' + uri;