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/*
* Copyright (c) 2014 The Android Open Source Project
* Copyright (c) 2008-2009, Motorola, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* - Neither the name of the Motorola, Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package javax.obex;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Calendar;
import java.security.SecureRandom;
/**
* This class implements the javax.obex.HeaderSet interface for OBEX over
* RFCOMM or OBEX over l2cap.
* @hide
*/
public final class HeaderSet {
/**
* Represents the OBEX Count header. This allows the connection statement to
* tell the server how many objects it plans to send or retrieve.
*
* The value of COUNT is 0xC0 (192).
*/
public static final int COUNT = 0xC0;
/**
* Represents the OBEX Name header. This specifies the name of the object.
*
* The value of NAME is 0x01 (1).
*/
public static final int NAME = 0x01;
/**
* Represents the OBEX Type header. This allows a request to specify the
* type of the object (e.g. text, html, binary, etc.).
*
* The value of TYPE is 0x42 (66).
*/
public static final int TYPE = 0x42;
/**
* Represents the OBEX Length header. This is the length of the object in
* bytes.
*
* The value of LENGTH is 0xC3 (195).
*/
public static final int LENGTH = 0xC3;
/**
* Represents the OBEX Time header using the ISO 8601 standards. This is the
* preferred time header.
*
* The value of TIME_ISO_8601 is 0x44 (68).
*/
public static final int TIME_ISO_8601 = 0x44;
/**
* Represents the OBEX Time header using the 4 byte representation. This is
* only included for backwards compatibility. It represents the number of
* seconds since January 1, 1970.
*
* The value of TIME_4_BYTE is 0xC4 (196).
*/
public static final int TIME_4_BYTE = 0xC4;
/**
* Represents the OBEX Description header. This is a text description of the
* object.
*
* The value of DESCRIPTION is 0x05 (5).
*/
public static final int DESCRIPTION = 0x05;
/**
* Represents the OBEX Target header. This is the name of the service an
* operation is targeted to.
*
* The value of TARGET is 0x46 (70).
*/
public static final int TARGET = 0x46;
/**
* Represents the OBEX HTTP header. This allows an HTTP 1.X header to be
* included in a request or reply.
*
* The value of HTTP is 0x47 (71).
*/
public static final int HTTP = 0x47;
/**
* Represents the OBEX BODY header.
*
* The value of BODY is 0x48 (72).
*/
public static final int BODY = 0x48;
/**
* Represents the OBEX End of BODY header.
*
* The value of BODY is 0x49 (73).
*/
public static final int END_OF_BODY = 0x49;
/**
* Represents the OBEX Who header. Identifies the OBEX application to
* determine if the two peers are talking to each other.
*
* The value of WHO is 0x4A (74).
*/
public static final int WHO = 0x4A;
/**
* Represents the OBEX Connection ID header. Identifies used for OBEX
* connection multiplexing.
*
* The value of CONNECTION_ID is 0xCB (203).
*/
public static final int CONNECTION_ID = 0xCB;
/**
* Represents the OBEX Application Parameter header. This header specifies
* additional application request and response information.
*
* The value of APPLICATION_PARAMETER is 0x4C (76).
*/
public static final int APPLICATION_PARAMETER = 0x4C;
/**
* Represents the OBEX authentication digest-challenge.
*
* The value of AUTH_CHALLENGE is 0x4D (77).
*/
public static final int AUTH_CHALLENGE = 0x4D;
/**
* Represents the OBEX authentication digest-response.
*
* The value of AUTH_RESPONSE is 0x4E (78).
*/
public static final int AUTH_RESPONSE = 0x4E;
/**
* Represents the OBEX Object Class header. This header specifies the OBEX
* object class of the object.
*
* The value of OBJECT_CLASS is 0x4F (79).
*/
public static final int OBJECT_CLASS = 0x4F;
/**
* Represents the OBEX Single Response Mode (SRM). This header is used
* for Single response mode, introduced in OBEX 1.5.
*
* The value of SINGLE_RESPONSE_MODE is 0x97 (151).
*/
public static final int SINGLE_RESPONSE_MODE = 0x97;
/**
* Represents the OBEX Single Response Mode Parameters. This header is used
* for Single response mode, introduced in OBEX 1.5.
*
* The value of SINGLE_RESPONSE_MODE_PARAMETER is 0x98 (152).
*/
public static final int SINGLE_RESPONSE_MODE_PARAMETER = 0x98;
private Long mCount; // 4 byte unsigned integer
private String mName; // null terminated Unicode text string
private boolean mEmptyName;
private String mType; // null terminated ASCII text string
private Long mLength; // 4 byte unsigend integer
private Calendar mIsoTime; // String of the form YYYYMMDDTHHMMSSZ
private Calendar mByteTime; // 4 byte unsigned integer
private String mDescription; // null terminated Unicode text String
private byte[] mTarget; // byte sequence
private byte[] mHttpHeader; // byte sequence
private byte[] mWho; // length prefixed byte sequence
private byte[] mAppParam; // byte sequence of the form tag length value
private byte[] mObjectClass; // byte sequence
private String[] mUnicodeUserDefined; // null terminated unicode string
private byte[][] mSequenceUserDefined; // byte sequence user defined
private Byte[] mByteUserDefined; // 1 byte
private Long[] mIntegerUserDefined; // 4 byte unsigned integer
private SecureRandom mRandom = null;
private Byte mSingleResponseMode; // byte to indicate enable/disable/support for SRM
private Byte mSrmParam; // byte representing the SRM parameters - only "wait"
// is supported by Bluetooth
/*package*/ byte[] nonce;
public byte[] mAuthChall; // The authentication challenge header
public byte[] mAuthResp; // The authentication response header
public byte[] mConnectionID; // THe connection ID
public int responseCode;
/**
* Creates new HeaderSet object.
* @param size the max packet size for this connection
*/
public HeaderSet() {
mUnicodeUserDefined = new String[16];
mSequenceUserDefined = new byte[16][];
mByteUserDefined = new Byte[16];
mIntegerUserDefined = new Long[16];
responseCode = -1;
}
/**
* Sets flag for special "value" of NAME header which should be empty. This
* is not the same as NAME header with empty string in which case it will
* have length of 5 bytes. It should be 3 bytes with only header id and
* length field.
*/
public void setEmptyNameHeader() {
mName = null;
mEmptyName = true;
}
/**
* Gets flag for special "value" of NAME header which should be empty. See
* above.
*/
public boolean getEmptyNameHeader() {
return mEmptyName;
}
/**
* Sets the value of the header identifier to the value provided. The type
* of object must correspond to the Java type defined in the description of
* this interface. If null is passed as the
* headerValue then the header will be removed from the set of
* headers to include in the next request.
* @param headerID the identifier to include in the message
* @param headerValue the value of the header identifier
* @throws IllegalArgumentException if the header identifier provided is not
* one defined in this interface or a user-defined header; if the
* type of headerValue is not the correct Java type as
* defined in the description of this interface\
*/
public void setHeader(int headerID, Object headerValue) {
long temp = -1;
switch (headerID) {
case COUNT:
if (!(headerValue instanceof Long)) {
if (headerValue == null) {
mCount = null;
break;
}
throw new IllegalArgumentException("Count must be a Long");
}
temp = ((Long)headerValue).longValue();
if ((temp < 0L) || (temp > 0xFFFFFFFFL)) {
throw new IllegalArgumentException("Count must be between 0 and 0xFFFFFFFF");
}
mCount = (Long)headerValue;
break;
case NAME:
if ((headerValue != null) && (!(headerValue instanceof String))) {
throw new IllegalArgumentException("Name must be a String");
}
mEmptyName = false;
mName = (String)headerValue;
break;
case TYPE:
if ((headerValue != null) && (!(headerValue instanceof String))) {
throw new IllegalArgumentException("Type must be a String");
}
mType = (String)headerValue;
break;
case LENGTH:
if (!(headerValue instanceof Long)) {
if (headerValue == null) {
mLength = null;
break;
}
throw new IllegalArgumentException("Length must be a Long");
}
temp = ((Long)headerValue).longValue();
if ((temp < 0L) || (temp > 0xFFFFFFFFL)) {
throw new IllegalArgumentException("Length must be between 0 and 0xFFFFFFFF");
}
mLength = (Long)headerValue;
break;
case TIME_ISO_8601:
if ((headerValue != null) && (!(headerValue instanceof Calendar))) {
throw new IllegalArgumentException("Time ISO 8601 must be a Calendar");
}
mIsoTime = (Calendar)headerValue;
break;
case TIME_4_BYTE:
if ((headerValue != null) && (!(headerValue instanceof Calendar))) {
throw new IllegalArgumentException("Time 4 Byte must be a Calendar");
}
mByteTime = (Calendar)headerValue;
break;
case DESCRIPTION:
if ((headerValue != null) && (!(headerValue instanceof String))) {
throw new IllegalArgumentException("Description must be a String");
}
mDescription = (String)headerValue;
break;
case TARGET:
if (headerValue == null) {
mTarget = null;
} else {
if (!(headerValue instanceof byte[])) {
throw new IllegalArgumentException("Target must be a byte array");
} else {
mTarget = new byte[((byte[])headerValue).length];
System.arraycopy(headerValue, 0, mTarget, 0, mTarget.length);
}
}
break;
case HTTP:
if (headerValue == null) {
mHttpHeader = null;
} else {
if (!(headerValue instanceof byte[])) {
throw new IllegalArgumentException("HTTP must be a byte array");
} else {
mHttpHeader = new byte[((byte[])headerValue).length];
System.arraycopy(headerValue, 0, mHttpHeader, 0, mHttpHeader.length);
}
}
break;
case WHO:
if (headerValue == null) {
mWho = null;
} else {
if (!(headerValue instanceof byte[])) {
throw new IllegalArgumentException("WHO must be a byte array");
} else {
mWho = new byte[((byte[])headerValue).length];
System.arraycopy(headerValue, 0, mWho, 0, mWho.length);
}
}
break;
case OBJECT_CLASS:
if (headerValue == null) {
mObjectClass = null;
} else {
if (!(headerValue instanceof byte[])) {
throw new IllegalArgumentException("Object Class must be a byte array");
} else {
mObjectClass = new byte[((byte[])headerValue).length];
System.arraycopy(headerValue, 0, mObjectClass, 0, mObjectClass.length);
}
}
break;
case APPLICATION_PARAMETER:
if (headerValue == null) {
mAppParam = null;
} else {
if (!(headerValue instanceof byte[])) {
throw new IllegalArgumentException(
"Application Parameter must be a byte array");
} else {
mAppParam = new byte[((byte[])headerValue).length];
System.arraycopy(headerValue, 0, mAppParam, 0, mAppParam.length);
}
}
break;
case SINGLE_RESPONSE_MODE:
if (headerValue == null) {
mSingleResponseMode = null;
} else {
if (!(headerValue instanceof Byte)) {
throw new IllegalArgumentException(
"Single Response Mode must be a Byte");
} else {
mSingleResponseMode = (Byte)headerValue;
}
}
break;
case SINGLE_RESPONSE_MODE_PARAMETER:
if (headerValue == null) {
mSrmParam = null;
} else {
if (!(headerValue instanceof Byte)) {
throw new IllegalArgumentException(
"Single Response Mode Parameter must be a Byte");
} else {
mSrmParam = (Byte)headerValue;
}
}
break;
default:
// Verify that it was not a Unicode String user Defined
if ((headerID >= 0x30) && (headerID <= 0x3F)) {
if ((headerValue != null) && (!(headerValue instanceof String))) {
throw new IllegalArgumentException(
"Unicode String User Defined must be a String");
}
mUnicodeUserDefined[headerID - 0x30] = (String)headerValue;
break;
}
// Verify that it was not a byte sequence user defined value
if ((headerID >= 0x70) && (headerID <= 0x7F)) {
if (headerValue == null) {
mSequenceUserDefined[headerID - 0x70] = null;
} else {
if (!(headerValue instanceof byte[])) {
throw new IllegalArgumentException(
"Byte Sequence User Defined must be a byte array");
} else {
mSequenceUserDefined[headerID - 0x70] = new byte[((byte[])headerValue).length];
System.arraycopy(headerValue, 0, mSequenceUserDefined[headerID - 0x70],
0, mSequenceUserDefined[headerID - 0x70].length);
}
}
break;
}
// Verify that it was not a Byte user Defined
if ((headerID >= 0xB0) && (headerID <= 0xBF)) {
if ((headerValue != null) && (!(headerValue instanceof Byte))) {
throw new IllegalArgumentException("ByteUser Defined must be a Byte");
}
mByteUserDefined[headerID - 0xB0] = (Byte)headerValue;
break;
}
// Verify that is was not the 4 byte unsigned integer user
// defined header
if ((headerID >= 0xF0) && (headerID <= 0xFF)) {
if (!(headerValue instanceof Long)) {
if (headerValue == null) {
mIntegerUserDefined[headerID - 0xF0] = null;
break;
}
throw new IllegalArgumentException("Integer User Defined must be a Long");
}
temp = ((Long)headerValue).longValue();
if ((temp < 0L) || (temp > 0xFFFFFFFFL)) {
throw new IllegalArgumentException(
"Integer User Defined must be between 0 and 0xFFFFFFFF");
}
mIntegerUserDefined[headerID - 0xF0] = (Long)headerValue;
break;
}
throw new IllegalArgumentException("Invalid Header Identifier");
}
}
/**
* Retrieves the value of the header identifier provided. The type of the
* Object returned is defined in the description of this interface.
* @param headerID the header identifier whose value is to be returned
* @return the value of the header provided or null if the
* header identifier specified is not part of this
* HeaderSet object
* @throws IllegalArgumentException if the headerID is not one
* defined in this interface or any of the user-defined headers
* @throws IOException if an error occurred in the transport layer during
* the operation or if the connection has been closed
*/
public Object getHeader(int headerID) throws IOException {
switch (headerID) {
case COUNT:
return mCount;
case NAME:
return mName;
case TYPE:
return mType;
case LENGTH:
return mLength;
case TIME_ISO_8601:
return mIsoTime;
case TIME_4_BYTE:
return mByteTime;
case DESCRIPTION:
return mDescription;
case TARGET:
return mTarget;
case HTTP:
return mHttpHeader;
case WHO:
return mWho;
case CONNECTION_ID:
return mConnectionID;
case OBJECT_CLASS:
return mObjectClass;
case APPLICATION_PARAMETER:
return mAppParam;
case SINGLE_RESPONSE_MODE:
return mSingleResponseMode;
case SINGLE_RESPONSE_MODE_PARAMETER:
return mSrmParam;
default:
// Verify that it was not a Unicode String user Defined
if ((headerID >= 0x30) && (headerID <= 0x3F)) {
return mUnicodeUserDefined[headerID - 0x30];
}
// Verify that it was not a byte sequence user defined header
if ((headerID >= 0x70) && (headerID <= 0x7F)) {
return mSequenceUserDefined[headerID - 0x70];
}
// Verify that it was not a byte user defined header
if ((headerID >= 0xB0) && (headerID <= 0xBF)) {
return mByteUserDefined[headerID - 0xB0];
}
// Verify that it was not a integer user defined header
if ((headerID >= 0xF0) && (headerID <= 0xFF)) {
return mIntegerUserDefined[headerID - 0xF0];
}
throw new IllegalArgumentException("Invalid Header Identifier");
}
}
/**
* Retrieves the list of headers that may be retrieved via the
* getHeader method that will not return null. In
* other words, this method returns all the headers that are available in
* this object.
* @see #getHeader
* @return the array of headers that are set in this object or
* null if no headers are available
* @throws IOException if an error occurred in the transport layer during
* the operation or the connection has been closed
*/
public int[] getHeaderList() throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream();
if (mCount != null) {
out.write(COUNT);
}
if (mName != null) {
out.write(NAME);
}
if (mType != null) {
out.write(TYPE);
}
if (mLength != null) {
out.write(LENGTH);
}
if (mIsoTime != null) {
out.write(TIME_ISO_8601);
}
if (mByteTime != null) {
out.write(TIME_4_BYTE);
}
if (mDescription != null) {
out.write(DESCRIPTION);
}
if (mTarget != null) {
out.write(TARGET);
}
if (mHttpHeader != null) {
out.write(HTTP);
}
if (mWho != null) {
out.write(WHO);
}
if (mAppParam != null) {
out.write(APPLICATION_PARAMETER);
}
if (mObjectClass != null) {
out.write(OBJECT_CLASS);
}
if(mSingleResponseMode != null) {
out.write(SINGLE_RESPONSE_MODE);
}
if(mSrmParam != null) {
out.write(SINGLE_RESPONSE_MODE_PARAMETER);
}
for (int i = 0x30; i < 0x40; i++) {
if (mUnicodeUserDefined[i - 0x30] != null) {
out.write(i);
}
}
for (int i = 0x70; i < 0x80; i++) {
if (mSequenceUserDefined[i - 0x70] != null) {
out.write(i);
}
}
for (int i = 0xB0; i < 0xC0; i++) {
if (mByteUserDefined[i - 0xB0] != null) {
out.write(i);
}
}
for (int i = 0xF0; i < 0x100; i++) {
if (mIntegerUserDefined[i - 0xF0] != null) {
out.write(i);
}
}
byte[] headers = out.toByteArray();
out.close();
if ((headers == null) || (headers.length == 0)) {
return null;
}
int[] result = new int[headers.length];
for (int i = 0; i < headers.length; i++) {
// Convert the byte to a positive integer. That is, an integer
// between 0 and 256.
result[i] = headers[i] & 0xFF;
}
return result;
}
/**
* Sets the authentication challenge header. The realm will be
* encoded based upon the default encoding scheme used by the implementation
* to encode strings. Therefore, the encoding scheme used to encode the
* realm is application dependent.
* @param realm a short description that describes what password to use; if
* null no realm will be sent in the authentication
* challenge header
* @param userID if true, a user ID is required in the reply;
* if false, no user ID is required
* @param access if true then full access will be granted if
* successful; if false then read-only access will be
* granted if successful
* @throws IOException
*/
public void createAuthenticationChallenge(String realm, boolean userID, boolean access)
throws IOException {
nonce = new byte[16];
if(mRandom == null) {
mRandom = new SecureRandom();
}
for (int i = 0; i < 16; i++) {
nonce[i] = (byte)mRandom.nextInt();
}
mAuthChall = ObexHelper.computeAuthenticationChallenge(nonce, realm, access, userID);
}
/**
* Returns the response code received from the server. Response codes are
* defined in the ResponseCodes class.
* @see ResponseCodes
* @return the response code retrieved from the server
* @throws IOException if an error occurred in the transport layer during
* the transaction; if this method is called on a
* HeaderSet object created by calling
* createHeaderSet() in a ClientSession
* object; if this object was created by an OBEX server
*/
public int getResponseCode() throws IOException {
if (responseCode == -1) {
throw new IOException("May not be called on a server");
} else {
return responseCode;
}
}
}