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Issue #2739 - AuthenticationProtocolHandler Multiple Challenge Pattern 

Splitting elements into list using QuotedCSV and processing with state machine instead of using regex to split into multiple challenges.

Signed-off-by: lachan-roberts <lachlan@webtide.com>
This commit is contained in:
lachan-roberts 2018-07-31 19:26:10 +10:00
parent 0ba1d9b5a5
commit 58f2b8f360
2 changed files with 116 additions and 70 deletions
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152
jetty-client/src/main/java/org/eclipse/jetty/client/AuthenticationProtocolHandler.java
View File

@ -38,7 +38,6 @@ import org.eclipse.jetty.client.util.BufferingResponseListener;
import org.eclipse.jetty.http.HttpField;
import org.eclipse.jetty.http.HttpHeader;
import org.eclipse.jetty.http.QuotedCSV;
import org.eclipse.jetty.util.StringUtil;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
@ -47,10 +46,10 @@ public abstract class AuthenticationProtocolHandler implements ProtocolHandler
public static final int DEFAULT_MAX_CONTENT_LENGTH = 16*1024;
public static final Logger LOG = Log.getLogger(AuthenticationProtocolHandler.class);
private static final Pattern PARAM_PATTERN = Pattern.compile("([^=]+)=(.*)");
private static final Pattern TYPE_PATTERN = Pattern.compile("([^\\s]+)(\\s+(.*))?");
private static final Pattern MULTIPLE_CHALLENGE_PATTERN = Pattern.compile("(.*?)\\s*,\\s*([^=\\s,]+(\\s+[^=\\s].*)?)");
private static final Pattern BASE64_PATTERN = Pattern.compile("[\\+\\-\\.\\/\\dA-Z_a-z~]+=*");
private enum State { AUTH_SCHEME, TOKEN68, AUTH_PARAMS, CHALLENGE_END }
private static final Pattern AUTH_SCHEME = Pattern.compile("([!#$%&'*+\\-.^_`|~0-9A-Za-z]+)(?:\\s+(.*))?");
private static final Pattern AUTH_PARAM = Pattern.compile("([!#$%&'*+\\-.^_`|~0-9A-Za-z]+)\\s*=\\s*(?:\"(.*)\"|(.*))");
private static final Pattern TOKEN_68 = Pattern.compile("([a-zA-Z0-9\\-._~+\\/]+=*)");
private final HttpClient client;
private final int maxContentLength;
@ -85,77 +84,106 @@ public abstract class AuthenticationProtocolHandler implements ProtocolHandler
protected List<HeaderInfo> getHeaderInfo(String value) throws IllegalArgumentException
protected List<HeaderInfo> getHeaderInfo(String header) throws IllegalArgumentException
{
String header = value;
List<HeaderInfo> headerInfos = new ArrayList<>();
List<HeaderInfo> headerInfos = new ArrayList<>();
List<String> values = new QuotedCSV(true, header).getValues();
Matcher m;
String authScheme = null;
Map<String,String> authParams = new HashMap<>();
State state = State.AUTH_SCHEME;
int index = 0;
String value = values.get(index);
Loop:
while(true)
{
Matcher m = MULTIPLE_CHALLENGE_PATTERN.matcher(header);
switch(state)
{
case AUTH_SCHEME:
m = AUTH_SCHEME.matcher(value);
if(m.matches())
{
headerInfos.add(newHeaderInfo(m.group(1)));
header = m.group(2);
}
else
authScheme = m.group(1);
value = m.group(2);
state = State.AUTH_PARAMS;
if(value==null)
break;
m = TOKEN_68.matcher(value);
if(m.matches())
{
headerInfos.add(newHeaderInfo(header));
value = m.group(1);
state = State.TOKEN68;
continue;
}
continue;
}
throw new IllegalArgumentException("Invalid auth-scheme");
case TOKEN68:
authParams.put("base64", value);
state = State.CHALLENGE_END;
break;
case AUTH_PARAMS:
if(value == null)
{
state = State.CHALLENGE_END;
continue;
}
m = AUTH_PARAM.matcher(value);
if(m.matches())
{
String paramVal = (m.group(2)!=null) ? m.group(2) : m.group(3);
authParams.put(m.group(1), paramVal);
break;
}
m = AUTH_SCHEME.matcher(value);
if(m.matches())
{
state = State.CHALLENGE_END;
continue;
}
throw new IllegalArgumentException("Invalid auth-param");
case CHALLENGE_END:
headerInfos.add(new HeaderInfo(getAuthorizationHeader(), authScheme, authParams));
authScheme = null;
authParams = new HashMap<>();
state = State.AUTH_SCHEME;
if(value==null)
break Loop;
continue;
default:
throw new IllegalStateException("Invalid state");
}
value = (++index < values.size()) ? values.get(index) : null;
}
return headerInfos;
}
protected HeaderInfo newHeaderInfo(String value) throws IllegalArgumentException
{
String type;
Map<String,String> params = new HashMap<>();
Matcher m = TYPE_PATTERN.matcher(value);
if (m.matches())
{
type = m.group(1);
if (m.group(2) != null)
params = parseParameters(m.group(3));
}
else
{
throw new IllegalArgumentException("Invalid Authentication Format");
}
return new HeaderInfo(getAuthorizationHeader(), type, params);
}
protected Map<String, String> parseParameters(String wwwAuthenticate) throws IllegalArgumentException
{
Map<String, String> result = new HashMap<>();
Matcher b64 = BASE64_PATTERN.matcher(wwwAuthenticate);
if (b64.matches())
{
result.put("base64", wwwAuthenticate);
return result;
}
QuotedCSV parts = new QuotedCSV(false, wwwAuthenticate);
for (String part : parts)
{
Matcher params = PARAM_PATTERN.matcher(part);
if (params.matches())
{
String name = StringUtil.asciiToLowerCase(params.group(1));
String value = (params.group(2)==null) ? "" : params.group(2);
result.put(name, value);
}
else
{
throw new IllegalArgumentException("Invalid Authentication Format");
}
}
return result;
}
private class AuthenticationListener extends BufferingResponseListener
{

26
jetty-client/src/test/java/org/eclipse/jetty/client/HttpClientAuthenticationTest.java
View File

@ -31,12 +31,12 @@ import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.IntFunction;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.client.api.Authentication;
import org.eclipse.jetty.client.api.Authentication.HeaderInfo;
import org.eclipse.jetty.client.api.AuthenticationStore;
import org.eclipse.jetty.client.api.ContentProvider;
import org.eclipse.jetty.client.api.ContentResponse;
@ -44,7 +44,6 @@ import org.eclipse.jetty.client.api.Request;
import org.eclipse.jetty.client.api.Response;
import org.eclipse.jetty.client.api.Response.Listener;
import org.eclipse.jetty.client.api.Result;
import org.eclipse.jetty.client.api.Authentication.HeaderInfo;
import org.eclipse.jetty.client.util.BasicAuthentication;
import org.eclipse.jetty.client.util.DeferredContentProvider;
import org.eclipse.jetty.client.util.DigestAuthentication;
@ -676,7 +675,7 @@ public class HttpClientAuthenticationTest extends AbstractHttpClientServerTest
Assert.assertTrue(headerInfos.get(0).getType().equalsIgnoreCase("Newauth"));
Assert.assertTrue(headerInfos.get(0).getParameter("realm").equals("apps"));
Assert.assertTrue(headerInfos.get(0).getParameter("type").equals("1"));
Assert.assertThat(headerInfos.get(0).getParameter("title"), Matchers.equalTo("Login to \"apps\""));
Assert.assertThat(headerInfos.get(0).getParameter("title"), Matchers.equalTo("Login to \\\"apps\\\"")); // TODO verify change from "Login to \"apps\""
Assert.assertTrue(headerInfos.get(1).getType().equalsIgnoreCase("Basic"));
Assert.assertTrue(headerInfos.get(1).getParameter("realm").equals("simple"));
}
@ -705,7 +704,7 @@ public class HttpClientAuthenticationTest extends AbstractHttpClientServerTest
Assert.assertTrue(headerInfo.getParameter("name").equals("value"));
Assert.assertTrue(headerInfo.getParameter("other").equals("value2"));
headerInfos = aph.getHeaderInfo("Scheme name=value, Scheme2 name=value2");
headerInfos = aph.getHeaderInfo(", , , , ,,,Scheme name=value, ,,Scheme2 name=value2,, ,,");
Assert.assertEquals(headerInfos.size(), 2);
Assert.assertTrue(headerInfos.get(0).getType().equalsIgnoreCase("Scheme"));
Assert.assertTrue(headerInfos.get(0).getParameter("nAmE").equals("value"));
@ -768,4 +767,23 @@ public class HttpClientAuthenticationTest extends AbstractHttpClientServerTest
Assert.assertTrue(headerInfoList.get(2).getParameter("realm").equals("thermostat3="));
Assert.assertTrue(headerInfoList.get(2).getParameter("nonce").equals("9523570528="));
}
@Test
public void testSingleChallangeLooksLikeMultipleChallenge()
{
AuthenticationProtocolHandler aph = new WWWAuthenticationProtocolHandler(client);
List<HeaderInfo> headerInfoList = aph.getHeaderInfo("Digest param=\",f \"");
Assert.assertEquals(1, headerInfoList.size());
headerInfoList = aph.getHeaderInfo("Digest realm=\"thermostat\", qop=\",Digest realm=hello\", nonce=\"1523430383=\"");
Assert.assertEquals(1, headerInfoList.size());
HeaderInfo headerInfo = headerInfoList.get(0);
Assert.assertTrue(headerInfo.getType().equalsIgnoreCase("Digest"));
Assert.assertTrue(headerInfo.getParameter("qop").equals(",Digest realm=hello"));
Assert.assertTrue(headerInfo.getParameter("realm").equals("thermostat"));
Assert.assertThat(headerInfo.getParameter("nonce"), Matchers.is("1523430383="));
}
}