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/**
* BlueCove - Java library for Bluetooth
* Copyright (C) 2007 Vlad Skarzhevskyy
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @version $Id: OBEXHeaderSetImpl.java 1053 2007-09-10 14:29:12Z skarzhevskyy $
*/
package com.intel.bluetooth.obex;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Calendar;
import java.util.Date;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.TimeZone;
import java.util.Vector;
import javax.obex.HeaderSet;
import com.intel.bluetooth.DebugLog;
class OBEXHeaderSetImpl implements HeaderSet {
/** Number of objects (used by connect) (0xC0)*/
static final int OBEX_HDR_COUNT = HeaderSet.COUNT;
/** Name of the object (0x01) */
static final int OBEX_HDR_NAME = HeaderSet.NAME;
/** Type of the object (0x42)*/
static final int OBEX_HDR_TYPE = HeaderSet.TYPE;
/** Total lenght of object (0xC3)*/
static final int OBEX_HDR_LENGTH = HeaderSet.LENGTH;
/** Last modification time of (ISO8601) (0x44)*/
static final int OBEX_HDR_TIME = HeaderSet.TIME_ISO_8601;
/** Deprecated use HDR_TIME instead (0xC4)*/
static final int OBEX_HDR_TIME2 = HeaderSet.TIME_4_BYTE;
/** Description of object (0x05)*/
static final int OBEX_HDR_DESCRIPTION = HeaderSet.DESCRIPTION;
/** name of service that operation is targeted to (0x46)*/
static final int OBEX_HDR_TARGET = HeaderSet.TARGET;
/** An HTTP 1.x header (0x47)*/
static final int OBEX_HDR_HTTP = HeaderSet.HTTP;
/** Data part of the object (0x48)*/
static final int OBEX_HDR_BODY = 0x48;
/** Last data part of the object (0x49)*/
static final int OBEX_HDR_BODY_END = 0x49;
/** Identifies the sender of the object (0x4A)*/
static final int OBEX_HDR_WHO = HeaderSet.WHO;
/** Connection identifier used for OBEX connection multiplexing (0xCB)*/
static final int OBEX_HDR_CONNECTION = 0xCB;
/** Application parameters (0x4C)*/
static final int OBEX_HDR_APP_PARAM = HeaderSet.APPLICATION_PARAMETER;
/** Authentication digest-challenge (0x4D)*/
static final int OBEX_HDR_AUTH_CHALLENGE = 0x4D;
/** Authentication digest-response (0x4E)*/
static final int OBEX_HDR_AUTH_RESPONSE = 0x4E;
/** OBEX Object class of object (0x51)*/
static final int OBEX_HDR_OBJECTCLASS = HeaderSet.OBJECT_CLASS;
/** indicates the creator of an object (0xCF)*/
static final int OBEX_HDR_CREATOR = 0xCF;
/** uniquely identifies the network client (OBEX server) (0x50)*/
static final int OBEX_HDR_WANUUID = 0x50;
///** OBEX Object class of object (0x51)*/
//static final int OBEX_HDR_OBJECTCLASS = 0x51;
/** Parameters used in sessioncommands/responses (0x52)*/
static final int OBEX_HDR_SESSIONPARAM = 0x52;
/** Sequence number used in each OBEX packet for reliability (0x93)*/
static final int OBEX_HDR_SESSIONSEQ = 0x93;
// 0x30 to 0x3F user defined - this range includes all combinations of the upper 2 bits
static final int OBEX_HDR_USER = 0x30;
static final int OBEX_HDR_HI_MASK = 0xC0;
static final int OBEX_HDR_ID_MASK = 0x3F;
/** null terminated Unicode text, length prefixed with 2 byte unsigned integer */
static final int OBEX_STRING = 0x00;
/** byte sequence, length prefixed with 2 byte unsigned integer */
static final int OBEX_BYTE_STREAM = 0x40;
/** 1 byte quantity */
static final int OBEX_BYTE = 0x80;
/** 4 byte quantity ? transmitted in network byte order (high byte first) */
static final int OBEX_INT = 0xC0;
private static final int OBEX_MAX_FIELD_LEN = 0xFF;
private int responseCode;
private Hashtable headerValues;
private Vector authResponses;
private Vector authChallenges;
private static final int NO_RESPONSE_CODE = Integer.MIN_VALUE;
OBEXHeaderSetImpl() {
this(NO_RESPONSE_CODE);
}
private OBEXHeaderSetImpl(int responseCode) {
this.headerValues = new Hashtable();
this.responseCode = responseCode;
this.authResponses = new Vector();
this.authChallenges = new Vector();
}
static void validateCreatedHeaderSet(HeaderSet headers) {
if (headers == null) {
return;
}
if (!(headers instanceof OBEXHeaderSetImpl)) {
throw new IllegalArgumentException("Illegal HeaderSet type");
}
if (((OBEXHeaderSetImpl)headers).responseCode != NO_RESPONSE_CODE) {
throw new IllegalArgumentException("Illegal HeaderSet");
}
}
private void validateHeaderID(int headerID) throws IllegalArgumentException {
if (headerID < 0 || headerID > 0xff) {
throw new IllegalArgumentException("Expected header ID in range 0 to 255");
}
int identifier = headerID & OBEX_HDR_ID_MASK;
if (identifier >= 0x10 && identifier < 0x2F) {
throw new IllegalArgumentException("Reserved header ID");
}
}
public void setHeader(int headerID, Object headerValue) {
validateHeaderID(headerID);
if (headerValue == null) {
headerValues.remove(new Integer(headerID));
} else {
// Validate Java value Type
if ((headerID == OBEX_HDR_TIME) || (headerID == OBEX_HDR_TIME2)) {
if (!(headerValue instanceof Calendar)) {
throw new IllegalArgumentException("Expected java.util.Calendar");
}
} else if (headerID == OBEX_HDR_TYPE) {
if (!(headerValue instanceof String)) {
throw new IllegalArgumentException("Expected java.lang.String");
}
} else {
switch (headerID & OBEX_HDR_HI_MASK) {
case OBEX_STRING:
if (!(headerValue instanceof String)) {
throw new IllegalArgumentException("Expected java.lang.String");
}
break;
case OBEX_BYTE_STREAM:
if (!(headerValue instanceof byte[])) {
throw new IllegalArgumentException("Expected byte[]");
}
break;
case OBEX_BYTE:
if (!(headerValue instanceof Byte)) {
throw new IllegalArgumentException("Expected java.lang.Byte");
}
break;
case OBEX_INT:
if (!(headerValue instanceof Long)) {
throw new IllegalArgumentException("Expected java.lang.Long");
}
long v = ((Long)headerValue).longValue();
if (v < 0 || v > 0xffffffffl) {
throw new IllegalArgumentException("Expected long in range 0 to 2^32-1");
}
break;
default:
throw new IllegalArgumentException("Unsupported encoding " + (headerID & OBEX_HDR_HI_MASK));
}
}
headerValues.put(new Integer(headerID), headerValue);
}
}
public Object getHeader(int headerID) throws IOException {
validateHeaderID(headerID);
return headerValues.get(new Integer(headerID));
}
/* (non-Javadoc)
* @see javax.obex.HeaderSet#getHeaderList()
*/
public int[] getHeaderList() throws IOException {
if (headerValues.size() == 0) {
// Spec: null if no headers are available
return null;
}
int[] headerIDArray = new int[headerValues.size()];
int i = 0;
for (Enumeration e = headerValues.keys(); e.hasMoreElements();) {
headerIDArray[i++] = ((Integer) e.nextElement()).intValue();
}
return headerIDArray;
}
public int getResponseCode() throws IOException {
if (this.responseCode == NO_RESPONSE_CODE) {
throw new IOException();
}
return this.responseCode;
}
static HeaderSet cloneHeaders(HeaderSet headers) throws IOException {
if (headers == null) {
return null;
}
if (!(headers instanceof OBEXHeaderSetImpl)) {
throw new IllegalArgumentException("Illegal HeaderSet type");
}
HeaderSet hs = new OBEXHeaderSetImpl(((OBEXHeaderSetImpl)headers).responseCode);
int[] headerIDArray = headers.getHeaderList();
for (int i = 0; (headerIDArray != null) && (i < headerIDArray.length); i++) {
int headerID = headerIDArray[i];
hs.setHeader(headerID, headers.getHeader(headerID));
}
return hs;
}
public void createAuthenticationChallenge(String realm, boolean userID, boolean access) {
authChallenges.addElement(OBEXAuthentication.createChallenge(realm, userID, access));
}
void addAuthenticationResponse(byte[] authResponse) {
authResponses.addElement(authResponse);
}
boolean hasAuthenticationChallenge() {
return !authChallenges.isEmpty();
}
Enumeration getAuthenticationChallenges() {
return authChallenges.elements();
}
boolean hasAuthenticationResponse() {
return !authResponses.isEmpty();
}
Enumeration getAuthenticationResponses() {
return authResponses.elements();
}
static long readObexInt(byte[] data, int off) throws IOException {
long l = 0;
for (int i = 0; i < 4; i++) {
l = l << 8;
l += (int) (data[off + i] & 0xFF);
}
return l;
}
static void writeObexInt(OutputStream out, int headerID, long data) throws IOException {
byte[] b = new byte[5];
b[0] = (byte)headerID;
b[1] = (byte)((data >>> 24) & 0xFF);
b[2] = (byte)((data >>> 16) & 0xFF);
b[3] = (byte)((data >>> 8) & 0xFF);
b[4] = (byte)((data >>> 0) & 0xFF);
out.write(b);
}
static void writeObexLen(OutputStream out, int headerID, int len) throws IOException {
byte[] b = new byte[3];
b[0] = (byte)headerID;
if ((len < 0) || len > 0xFFFF) {
throw new IOException("very large data" + len);
}
b[1] = OBEXUtils.hiByte(len);
b[2] = OBEXUtils.loByte(len);
out.write(b);
}
static void writeObexASCII(OutputStream out, int headerID, String value) throws IOException {
writeObexLen(out, headerID, 3 + value.length() + 1);
out.write(value.getBytes("iso-8859-1"));
out.write(0);
}
static void writeObexUnicode(OutputStream out, int headerID, String value) throws IOException {
// null terminated Unicode text, length prefixed with 2 byte unsigned integer
// the length field includes the 2 bytes of the null
// terminator (0x00, 0x00). Therefore the length of the string ?Jumar? would be 12 bytes; 5 visible
// characters plus the null terminator, each two bytes in length.
if (value.length() == 0) {
writeObexLen(out, headerID, 3);
return;
}
byte[] b = OBEXUtils.getUTF16Bytes(value);
writeObexLen(out, headerID, 3 + b.length + 2);
out.write(b);
out.write(new byte[]{0, 0});
}
static byte[] toByteArray(HeaderSet headers) throws IOException {
if (headers == null) {
return new byte[0];
}
ByteArrayOutputStream buf = new ByteArrayOutputStream();
int[] headerIDArray = headers.getHeaderList();
for (int i = 0; (headerIDArray != null) && (i < headerIDArray.length); i++) {
int hi = headerIDArray[i];
if (hi == OBEX_HDR_TIME) {
Calendar c = (Calendar) headers.getHeader(hi);
writeObexLen(buf, hi, 19);
writeTimeISO8601(buf, c);
} else if (hi == OBEX_HDR_TIME2) {
Calendar c = (Calendar) headers.getHeader(hi);
writeObexInt(buf, hi, c.getTime().getTime() / 1000);
} else if (hi == OBEX_HDR_TYPE) {
//ASCII string
writeObexASCII(buf, hi, (String)headers.getHeader(hi));
} else {
switch (hi & OBEX_HDR_HI_MASK) {
case OBEX_STRING:
writeObexUnicode(buf, hi, (String)headers.getHeader(hi));
break;
case OBEX_BYTE_STREAM:
byte data[] = (byte[])headers.getHeader(hi);
writeObexLen(buf, hi, 3 + data.length);
buf.write(data);
break;
case OBEX_BYTE:
buf.write(hi);
buf.write(((Byte)headers.getHeader(hi)).byteValue());
break;
case OBEX_INT:
writeObexInt(buf, hi, ((Long) headers.getHeader(hi)).longValue());
break;
default:
throw new IOException("Unsupported encoding " + (hi & OBEX_HDR_HI_MASK));
}
}
}
if ((headerIDArray != null) && (headerIDArray.length != 0)) {
DebugLog.debug("written headers", headerIDArray.length);
}
for (Enumeration iter = ((OBEXHeaderSetImpl)headers).authChallenges.elements(); iter.hasMoreElements();) {
byte[] authChallenge = (byte[]) iter.nextElement();
writeObexLen(buf, OBEX_HDR_AUTH_CHALLENGE, 3 + authChallenge.length);
buf.write(authChallenge);
DebugLog.debug("written AUTH_CHALLENGE");
}
for (Enumeration iter = ((OBEXHeaderSetImpl)headers).authResponses.elements(); iter.hasMoreElements();) {
byte[] authResponse = (byte[]) iter.nextElement();
writeObexLen(buf, OBEX_HDR_AUTH_RESPONSE, 3 + authResponse.length);
buf.write(authResponse);
DebugLog.debug("written AUTH_RESPONSE");
}
return buf.toByteArray();
}
/*
* Read by server
*/
static OBEXHeaderSetImpl readHeaders(byte[] buf, int off) throws IOException {
return readHeaders(new OBEXHeaderSetImpl(NO_RESPONSE_CODE), buf, off);
}
static OBEXHeaderSetImpl readHeaders(byte responseCode, byte[] buf, int off) throws IOException {
return readHeaders(new OBEXHeaderSetImpl(0xFF & responseCode), buf, off);
}
private static OBEXHeaderSetImpl readHeaders(OBEXHeaderSetImpl hs, byte[] buf, int off) throws IOException {
int count = 0;
while (off < buf.length) {
int hi = 0xFF & buf[off];
int len = 0;
switch (hi & OBEX_HDR_HI_MASK) {
case OBEX_STRING:
len = OBEXUtils.bytesToShort(buf[off + 1], buf[off + 2]);
if (len == 3) {
hs.setHeader(hi, "");
} else {
byte data[] = new byte[len - 5];
System.arraycopy(buf, off + 3, data, 0, data.length);
hs.setHeader(hi, OBEXUtils.newStringUTF16(data));
}
break;
case OBEX_BYTE_STREAM:
len = OBEXUtils.bytesToShort(buf[off + 1], buf[off + 2]);
byte data[] = new byte[len - 3];
System.arraycopy(buf, off + 3, data, 0, data.length);
if (hi == OBEX_HDR_TYPE) {
if (data[data.length - 1] != 0) {
hs.setHeader(hi, new String(data, "iso-8859-1"));
} else {
hs.setHeader(hi, new String(data, 0, data.length - 1, "iso-8859-1"));
}
} else if (hi == OBEX_HDR_TIME) {
hs.setHeader(hi, readTimeISO8601(data));
} else if (hi == OBEX_HDR_AUTH_CHALLENGE) {
((OBEXHeaderSetImpl)hs).authChallenges.addElement(data);
DebugLog.debug("received AUTH_CHALLENGE");
} else if (hi == OBEX_HDR_AUTH_RESPONSE) {
((OBEXHeaderSetImpl)hs).authResponses.addElement(data);
DebugLog.debug("received AUTH_RESPONSE");
} else {
hs.setHeader(hi, data);
}
break;
case OBEX_BYTE:
len = 2;
hs.setHeader(hi, new Byte(buf[off + 1]));
break;
case OBEX_INT:
len = 5;
long intValue = readObexInt(buf, off + 1);
if (hi == OBEX_HDR_TIME2) {
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.setTime(new Date(intValue * 1000));
hs.setHeader(hi, cal);
} else {
hs.setHeader(hi, new Long(intValue));
}
break;
default:
throw new IOException("Unsupported encoding " + (hi & OBEX_HDR_HI_MASK));
}
off += len;
count ++;
}
if (count != 0) {
DebugLog.debug("read headers", count);
}
return hs;
}
private static byte[] d4(int i) {
byte[] b = new byte[4];
int d = 1000;
for (int k = 0; k < 4; k ++) {
b[k] = (byte)(i / d + '0');
i %= d;
d /=10;
}
return b;
}
private static byte[] d2(int i) {
byte[] b = new byte[2];
b[0] = (byte)(i / 10 + '0');
b[1] = (byte)(i % 10 + '0');
return b;
}
/**
* ISO-8601 UTC YYYYMMDDTHHMMSSZ
*/
static void writeTimeISO8601(OutputStream out, Calendar c) throws IOException {
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.setTime(c.getTime());
out.write(d4(cal.get(Calendar.YEAR)));
out.write(d2(cal.get(Calendar.MONTH) + 1));
out.write(d2(cal.get(Calendar.DAY_OF_MONTH)));
out.write('T');
out.write(d2(cal.get(Calendar.HOUR_OF_DAY)));
out.write(d2(cal.get(Calendar.MINUTE)));
out.write(d2(cal.get(Calendar.SECOND)));
out.write('Z');
}
/**
* ISO-8601 UTC YYYYMMDDTHHMMSSZ
*/
static Calendar readTimeISO8601(byte data[]) throws IOException {
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
if ((data.length != 16) || (data[8] != 'T') || (data[15] != 'Z')) {
throw new IOException("Invalid ISO-8601 date " + new String(data));
}
cal.set(Calendar.YEAR, Integer.valueOf(new String(data, 0, 4)).intValue());
cal.set(Calendar.MONTH, Integer.valueOf(new String(data, 4, 2)).intValue() - 1);
cal.set(Calendar.DAY_OF_MONTH, Integer.valueOf(new String(data, 6, 2)).intValue());
cal.set(Calendar.HOUR_OF_DAY, Integer.valueOf(new String(data, 9, 2)).intValue());
cal.set(Calendar.MINUTE, Integer.valueOf(new String(data, 11, 2)).intValue());
cal.set(Calendar.SECOND, Integer.valueOf(new String(data, 13, 2)).intValue());
return cal;
}
}
