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package org.xmlrpc.android;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.net.URI;
import java.net.URL;
import java.util.Map;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;
/**
* XMLRPCClient allows to call remote XMLRPC method.
*
* <p>
* The following table shows how XML-RPC types are mapped to java call parameters/response values.
* </p>
*
* <p>
* <table border="2" align="center" cellpadding="5">
* <thead><tr><th>XML-RPC Type</th><th>Call Parameters</th><th>Call Response</th></tr></thead>
*
* <tbody>
* <td>int, i4</td><td>byte<br />Byte<br />short<br />Short<br />int<br />Integer</td><td>int<br />Integer</td>
* </tr>
* <tr>
* <td>i8</td><td>long<br />Long</td><td>long<br />Long</td>
* </tr>
* <tr>
* <td>double</td><td>float<br />Float<br />double<br />Double</td><td>double<br />Double</td>
* </tr>
* <tr>
* <td>string</td><td>String</td><td>String</td>
* </tr>
* <tr>
* <td>boolean</td><td>boolean<br />Boolean</td><td>boolean<br />Boolean</td>
* </tr>
* <tr>
* <td>dateTime.iso8601</td><td>java.util.Date<br />java.util.Calendar</td><td>java.util.Date</td>
* </tr>
* <tr>
* <td>base64</td><td>byte[]</td><td>byte[]</td>
* </tr>
* <tr>
* <td>array</td><td>java.util.List<Object><br />Object[]</td><td>Object[]</td>
* </tr>
* <tr>
* <td>struct</td><td>java.util.Map<String, Object></td><td>java.util.Map<String, Object></td>
* </tr>
* </tbody>
* </table>
* </p>
* <p>
* You can also pass as a parameter any object implementing XMLRPCSerializable interface. In this
* case your object overrides getSerializable() telling how to serialize to XMLRPC protocol
* </p>
*/
public class XMLRPCClient extends XMLRPCCommon {
private HttpClient client;
private HttpPost postMethod;
private HttpParams httpParams;
/**
* XMLRPCClient constructor. Creates new instance based on server URI */
/*
* @param XMLRPC server URI
*/
public XMLRPCClient(URI uri) {
postMethod = new HttpPost(uri);
postMethod.addHeader("Content-Type", "text/xml");
// WARNING
// I had to disable "Expect: 100-Continue" header since I had
// two second delay between sending http POST request and POST body
httpParams = postMethod.getParams();
HttpProtocolParams.setUseExpectContinue(httpParams, false);
client = new DefaultHttpClient();
}
/**
* Convenience constructor. Creates new instance based on server String address */
/*
* @param XMLRPC server address
*/
public XMLRPCClient(String url) {
this(URI.create(url));
}
/**
* Convenience XMLRPCClient constructor. Creates new instance based on server URL */
/*
* @param XMLRPC server URL
*/
public XMLRPCClient(URL url) {
this(URI.create(url.toExternalForm()));
}
/**
* Convenience constructor. Creates new instance based on server String address */
/*
* @param XMLRPC server address
* @param HTTP Server - Basic Authentication - Username
* @param HTTP Server - Basic Authentication - Password
*/
public XMLRPCClient(URI uri, String username, String password) {
this(uri);
((DefaultHttpClient) client).getCredentialsProvider().setCredentials(
new AuthScope(uri.getHost(), uri.getPort(),AuthScope.ANY_REALM),
new UsernamePasswordCredentials(username, password));
}
/**
* Convenience constructor. Creates new instance based on server String address */
/*
* @param XMLRPC server address
* @param HTTP Server - Basic Authentication - Username
* @param HTTP Server - Basic Authentication - Password
*/
public XMLRPCClient(String url, String username, String password) {
this(URI.create(url), username, password);
}
/**
* Convenience constructor. Creates new instance based on server String address */
/*
* @param XMLRPC server url
* @param HTTP Server - Basic Authentication - Username
* @param HTTP Server - Basic Authentication - Password
*/
public XMLRPCClient(URL url, String username, String password) {
this(URI.create(url.toExternalForm()), username, password);
}
/**
* Sets basic authentication on web request using plain credentials
* @param username The plain text username
* @param password The plain text password
*/
public void setBasicAuthentication(String username, String password) {
((DefaultHttpClient) client).getCredentialsProvider().setCredentials(
new AuthScope(postMethod.getURI().getHost(), postMethod.getURI().getPort(),
AuthScope.ANY_REALM),
new UsernamePasswordCredentials(username, password));
}
/**
* Call method with optional parameters. This is general method.
* If you want to call your method with 0-8 parameters, you can use more
* convenience call() methods
*
* @param method name of method to call
* @param params parameters to pass to method (may be null if method has no parameters)
* @return deserialized method return value
* @throws XMLRPCException
*/
@SuppressWarnings("unchecked")
public Object callEx(String method, Object[] params) throws XMLRPCException {
try {
// prepare POST body
String body = methodCall(method, params);
// set POST body
HttpEntity entity = new StringEntity(body);
postMethod.setEntity(entity);
//Log.d(Tag.LOG, "ros HTTP POST");
// execute HTTP POST request
HttpResponse response = client.execute(postMethod);
//Log.d(Tag.LOG, "ros HTTP POSTed");
// check status code
int statusCode = response.getStatusLine().getStatusCode();
//Log.d(Tag.LOG, "ros status code:" + statusCode);
if (statusCode != HttpStatus.SC_OK) {
throw new XMLRPCException("HTTP status code: " + statusCode + " != " + HttpStatus.SC_OK);
}
// parse response stuff
//
// setup pull parser
XmlPullParser pullParser = XmlPullParserFactory.newInstance().newPullParser();
entity = response.getEntity();
Reader reader = new InputStreamReader(new BufferedInputStream(entity.getContent()));
// for testing purposes only
// reader = new StringReader("<?xml version='1.0'?><methodResponse><params><param><value>\n\n\n</value></param></params></methodResponse>");
pullParser.setInput(reader);
// lets start pulling...
pullParser.nextTag();
pullParser.require(XmlPullParser.START_TAG, null, Tag.METHOD_RESPONSE);
pullParser.nextTag(); // either Tag.PARAMS (<params>) or Tag.FAULT (<fault>)
String tag = pullParser.getName();
if (tag.equals(Tag.PARAMS)) {
// normal response
pullParser.nextTag(); // Tag.PARAM (<param>)
pullParser.require(XmlPullParser.START_TAG, null, Tag.PARAM);
pullParser.nextTag(); // Tag.VALUE (<value>)
// no parser.require() here since its called in XMLRPCSerializer.deserialize() below
// deserialize result
Object obj = iXMLRPCSerializer.deserialize(pullParser);
entity.consumeContent();
return obj;
} else
if (tag.equals(Tag.FAULT)) {
// fault response
pullParser.nextTag(); // Tag.VALUE (<value>)
// no parser.require() here since its called in XMLRPCSerializer.deserialize() below
// deserialize fault result
Map<String, Object> map = (Map<String, Object>) iXMLRPCSerializer.deserialize(pullParser);
String faultString = (String) map.get(Tag.FAULT_STRING);
int faultCode = (Integer) map.get(Tag.FAULT_CODE);
entity.consumeContent();
throw new XMLRPCFault(faultString, faultCode);
} else {
entity.consumeContent();
throw new XMLRPCException("Bad tag <" + tag + "> in XMLRPC response - neither <params> nor <fault>");
}
} catch (XMLRPCException e) {
// catch & propagate XMLRPCException/XMLRPCFault
throw e;
} catch (Exception e) {
e.printStackTrace();
// wrap any other Exception(s) around XMLRPCException
throw new XMLRPCException(e);
}
}
private String methodCall(String method, Object[] params)
throws IllegalArgumentException, IllegalStateException, IOException {
StringWriter bodyWriter = new StringWriter();
serializer.setOutput(bodyWriter);
serializer.startDocument(null, null);
serializer.startTag(null, Tag.METHOD_CALL);
// set method name
serializer.startTag(null, Tag.METHOD_NAME).text(method).endTag(null, Tag.METHOD_NAME);
serializeParams(params);
serializer.endTag(null, Tag.METHOD_CALL);
serializer.endDocument();
return bodyWriter.toString();
}
/**
* Convenience method call with no parameters
*
* @param method name of method to call
* @return deserialized method return value
* @throws XMLRPCException
*/
public Object call(String method) throws XMLRPCException {
return callEx(method, null);
}
/**
* Convenience method call with one parameter
*
* @param method name of method to call
* @param p0 method's parameter
* @return deserialized method return value
* @throws XMLRPCException
*/
public Object call(String method, Object p0) throws XMLRPCException {
Object[] params = {
p0,
};
return callEx(method, params);
}
/**
* Convenience method call with two parameters
*
* @param method name of method to call
* @param p0 method's 1st parameter
* @param p1 method's 2nd parameter
* @return deserialized method return value
* @throws XMLRPCException
*/
public Object call(String method, Object p0, Object p1) throws XMLRPCException {
Object[] params = {
p0, p1,
};
return callEx(method, params);
}
/**
* Convenience method call with three parameters
*
* @param method name of method to call
* @param p0 method's 1st parameter
* @param p1 method's 2nd parameter
* @param p2 method's 3rd parameter
* @return deserialized method return value
* @throws XMLRPCException
*/
public Object call(String method, Object p0, Object p1, Object p2) throws XMLRPCException {
Object[] params = {
p0, p1, p2,
};
return callEx(method, params);
}
/**
* Convenience method call with four parameters
*
* @param method name of method to call
* @param p0 method's 1st parameter
* @param p1 method's 2nd parameter
* @param p2 method's 3rd parameter
* @param p3 method's 4th parameter
* @return deserialized method return value
* @throws XMLRPCException
*/
public Object call(String method, Object p0, Object p1, Object p2, Object p3) throws XMLRPCException {
Object[] params = {
p0, p1, p2, p3,
};
return callEx(method, params);
}
/**
* Convenience method call with five parameters
*
* @param method name of method to call
* @param p0 method's 1st parameter
* @param p1 method's 2nd parameter
* @param p2 method's 3rd parameter
* @param p3 method's 4th parameter
* @param p4 method's 5th parameter
* @return deserialized method return value
* @throws XMLRPCException
*/
public Object call(String method, Object p0, Object p1, Object p2, Object p3, Object p4) throws XMLRPCException {
Object[] params = {
p0, p1, p2, p3, p4,
};
return callEx(method, params);
}
/**
* Convenience method call with six parameters
*
* @param method name of method to call
* @param p0 method's 1st parameter
* @param p1 method's 2nd parameter
* @param p2 method's 3rd parameter
* @param p3 method's 4th parameter
* @param p4 method's 5th parameter
* @param p5 method's 6th parameter
* @return deserialized method return value
* @throws XMLRPCException
*/
public Object call(String method, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5) throws XMLRPCException {
Object[] params = {
p0, p1, p2, p3, p4, p5,
};
return callEx(method, params);
}
/**
* Convenience method call with seven parameters
*
* @param method name of method to call
* @param p0 method's 1st parameter
* @param p1 method's 2nd parameter
* @param p2 method's 3rd parameter
* @param p3 method's 4th parameter
* @param p4 method's 5th parameter
* @param p5 method's 6th parameter
* @param p6 method's 7th parameter
* @return deserialized method return value
* @throws XMLRPCException
*/
public Object call(String method, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6) throws XMLRPCException {
Object[] params = {
p0, p1, p2, p3, p4, p5, p6,
};
return callEx(method, params);
}
/**
* Convenience method call with eight parameters
*
* @param method name of method to call
* @param p0 method's 1st parameter
* @param p1 method's 2nd parameter
* @param p2 method's 3rd parameter
* @param p3 method's 4th parameter
* @param p4 method's 5th parameter
* @param p5 method's 6th parameter
* @param p6 method's 7th parameter
* @param p7 method's 8th parameter
* @return deserialized method return value
* @throws XMLRPCException
*/
public Object call(String method, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6, Object p7) throws XMLRPCException {
Object[] params = {
p0, p1, p2, p3, p4, p5, p6, p7,
};
return callEx(method, params);
}
} |
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