1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
package edu.kit.scc.dei.ecplean;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.util.Observable;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathException;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.ParseException;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
public abstract class ECPAuthenticatorBase extends Observable {
protected static Log logger = LogFactory.getLog(ECPAuthenticatorBase.class);
protected ECPAuthenticationInfo authInfo;
protected DefaultHttpClient client;
protected DocumentBuilderFactory documentBuilderFactory;
protected XPathFactory xpathFactory;
protected NamespaceResolver namespaceResolver;
protected TransformerFactory transformerFactory;
public ECPAuthenticatorBase(DefaultHttpClient client) {
this.client = client;
documentBuilderFactory = DocumentBuilderFactory.newInstance();
documentBuilderFactory.setNamespaceAware(true);
xpathFactory = XPathFactory.newInstance();
namespaceResolver = new NamespaceResolver();
namespaceResolver.addNamespace("ecp", "urn:oasis:names:tc:SAML:2.0:profiles:SSO:ecp");
namespaceResolver.addNamespace("S", "http://schemas.xmlsoap.org/soap/envelope/");
namespaceResolver.addNamespace("paos", "urn:liberty:paos:2003-08");
transformerFactory = TransformerFactory.newInstance();
}
public ECPAuthenticatorBase() {
this(new DefaultHttpClient());
}
protected Document authenticateIdP(Document idpRequest)
throws ECPAuthenticationException {
logger.info("Sending initial IdP Request");
client.getCredentialsProvider().setCredentials(
new AuthScope(authInfo.getIdpEcpEndpoint().getHost(), authInfo.getIdpEcpEndpoint().getPort()),
new UsernamePasswordCredentials(authInfo.getUsername(), authInfo.getPassword()));
HttpPost httpPost = new HttpPost(authInfo.getIdpEcpEndpoint().toString());
HttpResponse httpResponse;
try {
httpPost.setEntity(new StringEntity(documentToString(idpRequest)));
httpResponse = client.execute(httpPost);
if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_UNAUTHORIZED) {
throw new ECPAuthenticationException("User not authorized");
}
} catch (UnsupportedEncodingException e) {
logger.debug("Could not submit PAOS request to IdP");
throw new ECPAuthenticationException(e);
} catch (TransformerConfigurationException e) {
logger.debug("Could not submit PAOS request to IdP");
throw new ECPAuthenticationException(e);
} catch (ClientProtocolException e) {
logger.debug("Could not submit PAOS request to IdP");
throw new ECPAuthenticationException(e);
} catch (TransformerException e) {
logger.debug("Could not submit PAOS request to IdP");
throw new ECPAuthenticationException(e);
} catch (IOException e) {
logger.debug("Could not submit PAOS request to IdP");
throw new ECPAuthenticationException(e);
}
String responseBody;
try {
responseBody = EntityUtils.toString(httpResponse.getEntity());
return buildDocumentFromString(responseBody);
} catch (ParseException e) {
logger.debug("Could not read response from IdP");
throw new ECPAuthenticationException(e);
} catch (IOException e) {
logger.debug("Could not read response from IdP");
throw new ECPAuthenticationException(e);
} catch (SAXException e) {
logger.debug("Could not read response from IdP");
throw new ECPAuthenticationException(e);
} catch (ParserConfigurationException e) {
logger.debug("Could not read response from IdP");
throw new ECPAuthenticationException(e);
}
}
protected Document buildDocumentFromString(String input)
throws IOException, ParserConfigurationException, SAXException {
DocumentBuilder builder = documentBuilderFactory.newDocumentBuilder();
return builder.parse(new InputSource(new StringReader(input)));
}
protected Object queryDocument(Document xmlDocument, String expression,
QName returnType) throws XPathException {
XPath xpath = xpathFactory.newXPath();
xpath.setNamespaceContext(namespaceResolver);
XPathExpression xPathExpression = xpath.compile(expression);
return xPathExpression.evaluate(xmlDocument, returnType);
}
protected String documentToString(Document xmlDocument)
throws TransformerConfigurationException, TransformerException {
Transformer transformer = transformerFactory.newTransformer();
StreamResult result = new StreamResult(new StringWriter());
DOMSource source = new DOMSource(xmlDocument);
transformer.transform(source, result);
return result.getWriter().toString();
}
public DefaultHttpClient getHttpClient() {
return client;
}
}
|
