/*
* Util.java
*
* Created on November 20, 2007, 2:31 PM
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
package net.oauth.j2me;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.InputStream;
import java.io.DataInputStream;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import javax.microedition.io.HttpsConnection;
/*
* Special note on Blackberry for HTTPS connection. Please see:
* http://blog.neonascent.net/archives/fireeagle-in-j2me-on-a-blackberry-bold/
*
* In short:
* 1. We need to detect if we are running on Blackberry...
* http://osdir.com/ml/java.sun.kvm/2003-07/msg00051.html says that we can check
* System.getProperty("microedition.platform") == "RIM Wireless Handheld"
*
* 2. If we are on Blackberry, then, we need to detect the connection type:
* Try http://www.localytics.com/blog/post/how-to-reliably-establish-a-network-connection-on-any-blackberry-device/
* which also provides some sample source code.
*/
/**
*
* @author Administrator
*/
public class Util {
/** Creates a new instance of Util */
public Util() {
}
public static final boolean checkForBlackberry() {
/**
* Try to detect Blackberry. Refernece:
* http://osdir.com/ml/java.sun.kvm/2003-07/msg00051.html
*/
boolean isRIM = false;
String tmp = System.getProperty("microedition.platform");
if (tmp.equals("RIM Wireless Handheld")) {
isRIM = true;
}
return isRIM;
}
// if the same key occurs in h1 and h2, use the value from h1
public static final Hashtable hashtableMerge(Hashtable h1, Hashtable h2) {
System.out.println("in hastableMerge");
Hashtable h=new Hashtable();
Enumeration keys=h1.keys();
while (keys.hasMoreElements()) {
Object k=keys.nextElement();
if (h1.get(k)!=null) {
h.put(k, h1.get(k));
}
}
keys=h2.keys();
while (keys.hasMoreElements()) {
Object k=keys.nextElement();
if (!h.containsKey(k) && h2.get(k)!=null) {
h.put(k, h2.get(k));
}
}
return h;
}
// sorts String values
public static final Enumeration sort(Enumeration e){
Vector v=new Vector();
while (e.hasMoreElements()) {
String s=(String)e.nextElement();
int i=0;
for (i=0; i<v.size(); i++) {
int c=s.compareTo((String)v.elementAt(i));
if (c<0) { // s should go before i
v.insertElementAt(s, i);
break;
} else if (c==0) { // s already there
break;
}
}
if (i>=v.size()) { // add s at end
v.addElement(s);
}
}
return v.elements();
}
/** Split string into multiple strings
* @param original Original string
* @param separator Separator string in original string
* @return Splitted string array
*/
// TODO -- add in a max split param
public static final String[] split(String original, String separator) {
Vector nodes = new Vector();
// Parse nodes into vector
int index = original.indexOf(separator);
while(index>=0) {
nodes.addElement( original.substring(0, index) );
original = original.substring(index+separator.length());
index = original.indexOf(separator);
}
// Get the last node
nodes.addElement( original );
// Create splitted string array
String[] result = new String[ nodes.size() ];
if( nodes.size()>0 ) {
for(int loop=0; loop<nodes.size(); loop++)
result[loop] = (String)nodes.elementAt(loop);
}
return result;
}
// this is an OAuth-friendly url encode -- should work fine for ordniary encoding also
public static final String urlEncode(String s) {
if (s == null)
return s;
StringBuffer sb = new StringBuffer(s.length() * 3);
try {
char c;
for (int i = 0; i < s.length(); i++) {
c = s.charAt(i);
if (c == '&') {
//sb.append("&"); // don't do this
sb.append("%26");
//} else if (c == ' ') {
// sb.append('+'); // maybe don't do this either
} else if (
// safe characters
c == '-'
|| c == '_'
|| c == '.'
|| c == '!'
|| c == '~'
|| c == '*'
|| c == '\''
//|| c == '('
//|| c == ')'
|| (c >= 'A' && c <= 'Z')
|| (c >= 'a' && c <= 'z') ) {
sb.append(c);
} else {
sb.append('%');
if (c > 15) { // is it a non-control char, ie. >x0F so 2 chars
sb.append(Integer.toHexString((int)c).toUpperCase()); // just add % and the string
} else {
sb.append("0" + Integer.toHexString((int)c).toUpperCase());
// otherwise need to add a leading 0
}
}
}
} catch (Exception ex) {
return (null);
}
return (sb.toString());
}
/*
* Copied from : http://developers.sun.com/mobility/midp/questions/calcbyte/
*/
private static byte[] readFromHTTPConnection(HttpConnection hpc) {
byte[] bytes;
try {
InputStream in = hpc.openDataInputStream();
int length = (int) hpc.getLength();
if (length == -1) {
// Reading from an HTTP 1.0 server or a chunked HTTP 1.1
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int c ;
while (true) {
c = in.read();
if (c == -1)
break;
baos.write(c);
}
bytes = baos.toByteArray();
baos.close();
baos = null;
} else {
// Reading a Content-Length labeled payload
bytes = new byte[length];
DataInputStream dis = new DataInputStream(in);
dis.readFully(bytes, 0, length);
dis.close();
dis = null;
}
in.close();
in = null;
} catch (IOException e) {
System.out.println("Could not open input stream for HTTP conneciton");
return null;
}
return bytes;
}
public static final String postViaHttpsConnection(String fullUrl) throws IOException, OAuthServiceProviderException {
String[] urlPieces=split(fullUrl, "?");
HttpConnection c = null;
OutputStream os = null;
int rc;
String respBody = new String(""); // return empty string on bad things
if (Util.checkForBlackberry()) {
// Blackberry device. Do some magic! Contributed code from
// http://blog.neonascent.net/archives/fireeagle-in-j2me-on-a-blackberry-bold/
urlPieces[0] = urlPieces[0] + ";deviceside=false;ConnectionType=mds-public;EndToEndRequired";
}
// TODO -- better way to handle unexpected responses
try {
System.out.println("UTIL -- posting to "+urlPieces[0]);
c = (HttpConnection)Connector.open(urlPieces[0], Connector.READ_WRITE); // hack for emulator?
// Set the request method and headers
c.setRequestMethod(HttpConnection.POST);
c.setRequestProperty("User-Agent", "Profile/MIDP-2.0 Configuration/CLDC-1.0");
c.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
c.setRequestProperty("Content-Length", ""+urlPieces[1].length());
// TODO -- add'l headers for t-mobile?
// Getting the output stream may flush the headers
os = c.openOutputStream();
System.out.println("UTIL -- writing POST data: "+urlPieces[1]);
os.write(urlPieces[1].getBytes());
//os.flush(); // Optional, getResponseCode will flush
// Getting the response code will open the connection,
// send the request, and read the HTTP response headers.
// The headers are stored until requested.
rc = c.getResponseCode();
int len = c.getHeaderFieldInt("Content-Length", 0);
//int len = (int)c.getLength();
System.out.println("content-length="+len);
byte[] data = Util.readFromHTTPConnection(c);
respBody=new String(data);
} catch (ClassCastException e) {
throw new IllegalArgumentException("Not an HTTP URL");
} finally {
if (os != null)
os.close();
if (c != null)
c.close();
}
if (rc != HttpConnection.HTTP_OK) {
throw new OAuthServiceProviderException("HTTP response code: " + rc, rc, respBody);
}
return respBody;
}
public static final String getViaHttpsConnection(String url) throws IOException, OAuthServiceProviderException {
HttpsConnection c = null;
int rc;
String respBody = new String(""); // return empty string on bad things
// TODO -- better way to handle unexpected responses
if (Util.checkForBlackberry()) {
// Blackberry device. Do some magic! Contributed code from
// http://blog.neonascent.net/archives/fireeagle-in-j2me-on-a-blackberry-bold/
url = url + ";deviceside=false;ConnectionType=mds-public;EndToEndRequired";
}
try {
System.out.println("UTIL -- opening connection");
c= (HttpsConnection) Connector.open(url, Connector.READ);
c.setRequestMethod(HttpConnection.GET);
c.setRequestProperty("User-Agent", "Profile/MIDP-2.0 Configuration/CLDC-1.0");
c.setRequestProperty("Cache-Control", "no-store");
c.setRequestProperty("Connection", "close"); // not sure this is a good idea, but HTTP/1.0 might be less error-prone, some clients have trouble with chunked responses
System.out.println("UTIL -- connection open");
// Getting the response code will open the connection,
// send the request, and read the HTTP response headers.
// The headers are stored until requested.
rc = c.getResponseCode();
System.out.println("UTIL -- got response code" + rc);
// Get the length and process the data
int len = c.getHeaderFieldInt("Content-Length", 0);
System.out.println("content-length="+len);
byte[] data = Util.readFromHTTPConnection(c);
respBody=new String(data);
} catch (ClassCastException e) {
throw new IllegalArgumentException("Not an HTTP URL");
} finally {
if (c != null)
c.close();
}
if (rc != HttpConnection.HTTP_OK) {
throw new OAuthServiceProviderException("HTTP response code: " + rc, rc, respBody);
}
return respBody;
}
private static char[] map1 = new char[64];
static {
int i = 0;
for ( char c = 'A'; c <= 'Z'; c++ ) {
map1[i++] = c;
}
for ( char c = 'a'; c <= 'z'; c++ ) {
map1[i++] = c;
}
for ( char c = '0'; c <= '9'; c++ ) {
map1[i++] = c;
}
map1[i++] = '+';
map1[i++] = '/';
}
public static final String base64Encode( byte[] in ) {
int iLen = in.length;
int oDataLen = ( iLen * 4 + 2 ) / 3;// output length without padding
int oLen = ( ( iLen + 2 ) / 3 ) * 4;// output length including padding
char[] out = new char[oLen];
int ip = 0;
int op = 0;
int i0;
int i1;
int i2;
int o0;
int o1;
int o2;
int o3;
while ( ip < iLen ) {
i0 = in[ip++] & 0xff;
i1 = ip < iLen ? in[ip++] & 0xff : 0;
i2 = ip < iLen ? in[ip++] & 0xff : 0;
o0 = i0 >>> 2;
o1 = ( ( i0 & 3 ) << 4 ) | ( i1 >>> 4 );
o2 = ( ( i1 & 0xf ) << 2 ) | ( i2 >>> 6 );
o3 = i2 & 0x3F;
out[op++] = map1[o0];
out[op++] = map1[o1];
out[op] = op < oDataLen ? map1[o2] : '=';
op++;
out[op] = op < oDataLen ? map1[o3] : '=';
op++;
}
return new String( out );
}
}