Examples of org.apache.commons.httpclient.auth.AuthScheme

Package org.apache.commons.httpclient.auth

Examples of org.apache.commons.httpclient.auth.AuthScheme

org.apache.commons.httpclient.auth.AuthScheme
This interface represents an abstract challenge-response oriented authentication scheme.

An authentication scheme should be able to support the following functions:
- Parse and process the challenge sent by the targer server in response to request for a protected resource
- Provide its textual designation
- Provide its parameters, if available
- Provide the realm this authentication scheme is applicable to, if available
- Generate authorization string for the given set of credentials, request method and URI as specificed in the HTTP request line in response to the actual authorization challenge
Authentication schemes may ignore method name and URI parameters if they are not relevant for the given authentication mechanism

Authentication schemes may be stateful involving a series of challenge-response exchanges
@author Oleg Kalnichevski @author Adrian Sutton @since 2.0beta1

        HttpState state = new HttpState();
        NTCredentials cred = new NTCredentials("username","password", "host",
                "domain");
        state.setCredentials(null, null, cred);
        HttpMethod method = new SimpleHttpMethod(new Header("WwW-AuThEnTiCaTe", challenge));
        AuthScheme authscheme = new NTLMScheme(challenge);
        assertTrue(authenticate(authscheme, method, null, state));
        assertTrue(null != method.getRequestHeader("Authorization"));
    }

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        HttpState state = new HttpState();
        NTCredentials cred = new NTCredentials("username","password", "host",
                "domain");
        state.setCredentials(null, null, cred);
        HttpMethod method = new SimpleHttpMethod(new Header("WWW-Authenticate", challenge));
        AuthScheme authscheme = new NTLMScheme(challenge);
        assertTrue(authenticate(authscheme, method, null, state));
        assertTrue(null != method.getRequestHeader("Authorization"));
        assertEquals(expected,
                method.getRequestHeader("Authorization").getValue());
    }

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        HttpState state = new HttpState();
        NTCredentials cred = new NTCredentials("username","password", "host",
                "domain");
        state.setCredentials(null, null, cred);
        HttpMethod method = new SimpleHttpMethod(new Header("WWW-Authenticate", challenge));
        AuthScheme authscheme = new NTLMScheme(challenge);
        assertTrue(authenticate(authscheme, method, null, state));
        assertTrue(null != method.getRequestHeader("Authorization"));
        assertEquals(expected,
                method.getRequestHeader("Authorization").getValue());
    }

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        NTCredentials cred = new NTCredentials("username","password", "host",
                "domain");
        state.setCredentials(null, null, cred);
        HttpMethod method = new SimpleHttpMethod(new Header("WWW-Authenticate", challenge));
        method.addRequestHeader("Host", "host");
        AuthScheme authscheme = new NTLMScheme(challenge);
        assertTrue(authenticate(authscheme, method, null, state));
        assertTrue(null != method.getRequestHeader("Authorization"));
        assertEquals(expected,
                method.getRequestHeader("Authorization").getValue());
    }

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        // Clean up existing authentication headers
        if (!cleanAuthHeaders(method, WWW_AUTH_RESP)) {
            // User defined authentication header(s) present
            return;
        }
        AuthScheme authscheme = method.getHostAuthState().getAuthScheme();
        if (authscheme == null) {
            return;
        }
        if ((this.authProcess == AUTH_WWW_REQUIRED) || (!authscheme.isConnectionBased())) {
            String host = conn.getVirtualHost();
            if (host == null) {
                host = conn.getHost();
            }
            int port = conn.getPort();
            HttpAuthRealm realm = new HttpAuthRealm(
                host, port, 
                authscheme.getRealm(), 
                authscheme.getSchemeName());  
            if (LOG.isDebugEnabled()) {
                LOG.debug("Authenticating with " + realm);
            }
            Credentials credentials = this.state.getCredentials(realm);
            if (credentials != null) {
                String authstring = authscheme.authenticate(credentials, method);
                if (authstring != null) {
                    method.addRequestHeader(new Header(WWW_AUTH_RESP, authstring, true));
                }
            } else {
                LOG.warn("Required credentials not available");

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        // Clean up existing authentication headers
        if (!cleanAuthHeaders(method, PROXY_AUTH_RESP)) {
            // User defined authentication header(s) present
            return;
        }
        AuthScheme authscheme = method.getProxyAuthState().getAuthScheme();
        if (authscheme == null) {
            return;
        }
        if ((this.authProcess == AUTH_PROXY_REQUIRED) || (!authscheme.isConnectionBased())) {
            HttpAuthRealm realm = new HttpAuthRealm(
                conn.getProxyHost(), conn.getProxyPort(), 
                authscheme.getRealm(), 
                authscheme.getSchemeName());  
            if (LOG.isDebugEnabled()) {
                LOG.debug("Authenticating with " + realm);
            }
            Credentials credentials = this.state.getProxyCredentials(realm);
            if (credentials != null) {
                String authstring = authscheme.authenticate(credentials, method);
                if (authstring != null) {
                    method.addRequestHeader(new Header(PROXY_AUTH_RESP, authstring, true));
                }
            } else {
                LOG.warn("Required credentials not available");

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        Map challenges = AuthChallengeParser.parseChallenges(
            method.getResponseHeaders(WWW_AUTH_CHALLENGE));
        if (challenges.isEmpty()) {
            return false; 
        }
        AuthScheme authscheme = null;
        try {
            authscheme = this.authProcessor.processChallenge(authstate, challenges);
        } catch (AuthChallengeException e) {
            if (LOG.isWarnEnabled()) {
                LOG.warn(e.getMessage());
            }
        }
        if (authscheme == null) {
            return false;
        }
        String host = conn.getVirtualHost();
        if (host == null) {
            host = conn.getHost();
        }
        int port = conn.getPort();
        HttpAuthRealm realm = new HttpAuthRealm(
            host, port, 
            authscheme.getRealm(), 
            authscheme.getSchemeName());  


        if ((this.authProcess == AUTH_WWW_REQUIRED) && (authscheme.isComplete())) {
            // Already tried and failed
            Credentials credentials = promptForCredentials(
                authscheme, method.getParams(), realm);
            if (credentials == null) {
                if (LOG.isInfoEnabled()) {

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        Map proxyChallenges = AuthChallengeParser.parseChallenges(
            method.getResponseHeaders(PROXY_AUTH_CHALLENGE));
        if (proxyChallenges.isEmpty()) {
            return false; 
        }
        AuthScheme authscheme = null;
        try {
            authscheme = this.authProcessor.processChallenge(authstate, proxyChallenges);
        } catch (AuthChallengeException e) {
            if (LOG.isWarnEnabled()) {
                LOG.warn(e.getMessage());
            }
        }
        if (authscheme == null) {
            return false;
        }
        HttpAuthRealm realm = new HttpAuthRealm(
            conn.getProxyHost(), conn.getProxyPort(), 
            authscheme.getRealm(), 
            authscheme.getSchemeName());  


        if ((this.authProcess == AUTH_PROXY_REQUIRED) && (authscheme.isComplete())) {
            // Already tried and failed
            Credentials credentials = promptForProxyCredentials(
                authscheme, method.getParams(), realm);
            if (credentials == null) {
                if (LOG.isInfoEnabled()) {

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        if (!cleanAuthHeaders(method, WWW_AUTH_RESP)) {
            // User defined authentication header(s) present
            return;
        }
        AuthState authstate = method.getHostAuthState();
        AuthScheme authscheme = authstate.getAuthScheme();
        if (authscheme == null) {
            return;
        }
        if (authstate.isAuthRequested() || !authscheme.isConnectionBased()) {
            String host = method.getParams().getVirtualHost();
            if (host == null) {
                host = conn.getHost();
            }
            int port = conn.getPort();
            AuthScope authscope = new AuthScope(
                host, port, 
                authscheme.getRealm(), 
                authscheme.getSchemeName());  
            if (LOG.isDebugEnabled()) {
                LOG.debug("Authenticating with " + authscope);
            }
            Credentials credentials = this.state.getCredentials(authscope);
            if (credentials != null) {
                String authstring = authscheme.authenticate(credentials, method);
                if (authstring != null) {
                    method.addRequestHeader(new Header(WWW_AUTH_RESP, authstring, true));
                }
            } else {
                if (LOG.isWarnEnabled()) {

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        if (!cleanAuthHeaders(method, PROXY_AUTH_RESP)) {
            // User defined authentication header(s) present
            return;
        }
        AuthState authstate = method.getProxyAuthState();
        AuthScheme authscheme = authstate.getAuthScheme();
        if (authscheme == null) {
            return;
        }
        if (authstate.isAuthRequested() || !authscheme.isConnectionBased()) {
            AuthScope authscope = new AuthScope(
                conn.getProxyHost(), conn.getProxyPort(), 
                authscheme.getRealm(), 
                authscheme.getSchemeName());  
            if (LOG.isDebugEnabled()) {
                LOG.debug("Authenticating with " + authscope);
            }
            Credentials credentials = this.state.getProxyCredentials(authscope);
            if (credentials != null) {
                String authstring = authscheme.authenticate(credentials, method);
                if (authstring != null) {
                    method.addRequestHeader(new Header(PROXY_AUTH_RESP, authstring, true));
                }
            } else {
                if (LOG.isWarnEnabled()) {

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