protected boolean isCachable(AuthScheme authScheme) {
if ((authScheme == null) || (!authScheme.isComplete())) {
return false;
}
String schemeName = authScheme.getSchemeName();
return (schemeName.equalsIgnoreCase("Basic")) || (schemeName.equalsIgnoreCase("Digest"));
}
public Queue<AuthOption> select(
Map<String, Header> challenges, HttpHost authhost, HttpResponse response, HttpContext context)
throws MalformedChallengeException {
Args.notNull(challenges, "Map of auth challenges");
Args.notNull(authhost, "Host");
Args.notNull(response, "HTTP response");
Args.notNull(context, "HTTP context");
HttpClientContext clientContext = HttpClientContext.adapt(context);
Queue<AuthOption> options = new LinkedList();
Lookup<AuthSchemeProvider> registry = clientContext.getAuthSchemeRegistry();
if (registry == null) {
this.log.debug("Auth scheme registry not set in the context");
return options;
}
CredentialsProvider credsProvider = clientContext.getCredentialsProvider();
if (credsProvider == null) {
this.log.debug("Credentials provider not set in the context");
return options;
}
RequestConfig config = clientContext.getRequestConfig();
Collection<String> authPrefs = getPreferredAuthSchemes(config);
if (authPrefs == null) {
authPrefs = DEFAULT_SCHEME_PRIORITY;
}
if (this.log.isDebugEnabled()) {
this.log.debug("Authentication schemes in the order of preference: " + authPrefs);
}
for (String id : authPrefs) {
Header challenge = (Header) challenges.get(id.toLowerCase(Locale.US));
if (challenge != null) {
AuthSchemeProvider authSchemeProvider = (AuthSchemeProvider) registry.lookup(id);
if (authSchemeProvider == null) {
if (this.log.isWarnEnabled()) {
this.log.warn("Authentication scheme " + id + " not supported");
}
} else {
AuthScheme authScheme = authSchemeProvider.create(context);
authScheme.processChallenge(challenge);
AuthScope authScope =
new AuthScope(
authhost.getHostName(),
authhost.getPort(),
authScheme.getRealm(),
authScheme.getSchemeName());
Credentials credentials = credsProvider.getCredentials(authScope);
if (credentials != null) {
options.add(new AuthOption(authScheme, credentials));
}
}
} else if (this.log.isDebugEnabled()) {
this.log.debug("Challenge for " + id + " authentication scheme not available");
}
}
return options;
}
public void authSucceeded(HttpHost authhost, AuthScheme authScheme, HttpContext context) {
Args.notNull(authhost, "Host");
Args.notNull(authScheme, "Auth scheme");
Args.notNull(context, "HTTP context");
HttpClientContext clientContext = HttpClientContext.adapt(context);
if (isCachable(authScheme)) {
AuthCache authCache = clientContext.getAuthCache();
if (authCache == null) {
authCache = new BasicAuthCache();
clientContext.setAuthCache(authCache);
}
if (this.log.isDebugEnabled()) {
this.log.debug("Caching '" + authScheme.getSchemeName() + "' auth scheme for " + authhost);
}
authCache.put(authhost, authScheme);
}
}