/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.internal.telephony;
import java.util.HashMap;
/**
* Implement the WSP data type decoder.
*
* @hide
*/
public class WspTypeDecoder {
private static final int WAP_PDU_SHORT_LENGTH_MAX = 30;
private static final int WAP_PDU_LENGTH_QUOTE = 31;
public static final int PDU_TYPE_PUSH = 0x06;
public static final int PDU_TYPE_CONFIRMED_PUSH = 0x07;
private final static HashMap<Integer, String> WELL_KNOWN_MIME_TYPES =
new HashMap<Integer, String>();
private final static HashMap<Integer, String> WELL_KNOWN_PARAMETERS =
new HashMap<Integer, String>();
public static final int PARAMETER_ID_X_WAP_APPLICATION_ID = 0x2f;
private static final int Q_VALUE = 0x00;
static {
WELL_KNOWN_MIME_TYPES.put(0x00, "*/*");
WELL_KNOWN_MIME_TYPES.put(0x01, "text/*");
WELL_KNOWN_MIME_TYPES.put(0x02, "text/html");
WELL_KNOWN_MIME_TYPES.put(0x03, "text/plain");
WELL_KNOWN_MIME_TYPES.put(0x04, "text/x-hdml");
WELL_KNOWN_MIME_TYPES.put(0x05, "text/x-ttml");
WELL_KNOWN_MIME_TYPES.put(0x06, "text/x-vCalendar");
WELL_KNOWN_MIME_TYPES.put(0x07, "text/x-vCard");
WELL_KNOWN_MIME_TYPES.put(0x08, "text/vnd.wap.wml");
WELL_KNOWN_MIME_TYPES.put(0x09, "text/vnd.wap.wmlscript");
WELL_KNOWN_MIME_TYPES.put(0x0A, "text/vnd.wap.wta-event");
WELL_KNOWN_MIME_TYPES.put(0x0B, "multipart/*");
WELL_KNOWN_MIME_TYPES.put(0x0C, "multipart/mixed");
WELL_KNOWN_MIME_TYPES.put(0x0D, "multipart/form-data");
WELL_KNOWN_MIME_TYPES.put(0x0E, "multipart/byterantes");
WELL_KNOWN_MIME_TYPES.put(0x0F, "multipart/alternative");
WELL_KNOWN_MIME_TYPES.put(0x10, "application/*");
WELL_KNOWN_MIME_TYPES.put(0x11, "application/java-vm");
WELL_KNOWN_MIME_TYPES.put(0x12, "application/x-www-form-urlencoded");
WELL_KNOWN_MIME_TYPES.put(0x13, "application/x-hdmlc");
WELL_KNOWN_MIME_TYPES.put(0x14, "application/vnd.wap.wmlc");
WELL_KNOWN_MIME_TYPES.put(0x15, "application/vnd.wap.wmlscriptc");
WELL_KNOWN_MIME_TYPES.put(0x16, "application/vnd.wap.wta-eventc");
WELL_KNOWN_MIME_TYPES.put(0x17, "application/vnd.wap.uaprof");
WELL_KNOWN_MIME_TYPES.put(0x18, "application/vnd.wap.wtls-ca-certificate");
WELL_KNOWN_MIME_TYPES.put(0x19, "application/vnd.wap.wtls-user-certificate");
WELL_KNOWN_MIME_TYPES.put(0x1A, "application/x-x509-ca-cert");
WELL_KNOWN_MIME_TYPES.put(0x1B, "application/x-x509-user-cert");
WELL_KNOWN_MIME_TYPES.put(0x1C, "image/*");
WELL_KNOWN_MIME_TYPES.put(0x1D, "image/gif");
WELL_KNOWN_MIME_TYPES.put(0x1E, "image/jpeg");
WELL_KNOWN_MIME_TYPES.put(0x1F, "image/tiff");
WELL_KNOWN_MIME_TYPES.put(0x20, "image/png");
WELL_KNOWN_MIME_TYPES.put(0x21, "image/vnd.wap.wbmp");
WELL_KNOWN_MIME_TYPES.put(0x22, "application/vnd.wap.multipart.*");
WELL_KNOWN_MIME_TYPES.put(0x23, "application/vnd.wap.multipart.mixed");
WELL_KNOWN_MIME_TYPES.put(0x24, "application/vnd.wap.multipart.form-data");
WELL_KNOWN_MIME_TYPES.put(0x25, "application/vnd.wap.multipart.byteranges");
WELL_KNOWN_MIME_TYPES.put(0x26, "application/vnd.wap.multipart.alternative");
WELL_KNOWN_MIME_TYPES.put(0x27, "application/xml");
WELL_KNOWN_MIME_TYPES.put(0x28, "text/xml");
WELL_KNOWN_MIME_TYPES.put(0x29, "application/vnd.wap.wbxml");
WELL_KNOWN_MIME_TYPES.put(0x2A, "application/x-x968-cross-cert");
WELL_KNOWN_MIME_TYPES.put(0x2B, "application/x-x968-ca-cert");
WELL_KNOWN_MIME_TYPES.put(0x2C, "application/x-x968-user-cert");
WELL_KNOWN_MIME_TYPES.put(0x2D, "text/vnd.wap.si");
WELL_KNOWN_MIME_TYPES.put(0x2E, "application/vnd.wap.sic");
WELL_KNOWN_MIME_TYPES.put(0x2F, "text/vnd.wap.sl");
WELL_KNOWN_MIME_TYPES.put(0x30, "application/vnd.wap.slc");
WELL_KNOWN_MIME_TYPES.put(0x31, "text/vnd.wap.co");
WELL_KNOWN_MIME_TYPES.put(0x32, "application/vnd.wap.coc");
WELL_KNOWN_MIME_TYPES.put(0x33, "application/vnd.wap.multipart.related");
WELL_KNOWN_MIME_TYPES.put(0x34, "application/vnd.wap.sia");
WELL_KNOWN_MIME_TYPES.put(0x35, "text/vnd.wap.connectivity-xml");
WELL_KNOWN_MIME_TYPES.put(0x36, "application/vnd.wap.connectivity-wbxml");
WELL_KNOWN_MIME_TYPES.put(0x37, "application/pkcs7-mime");
WELL_KNOWN_MIME_TYPES.put(0x38, "application/vnd.wap.hashed-certificate");
WELL_KNOWN_MIME_TYPES.put(0x39, "application/vnd.wap.signed-certificate");
WELL_KNOWN_MIME_TYPES.put(0x3A, "application/vnd.wap.cert-response");
WELL_KNOWN_MIME_TYPES.put(0x3B, "application/xhtml+xml");
WELL_KNOWN_MIME_TYPES.put(0x3C, "application/wml+xml");
WELL_KNOWN_MIME_TYPES.put(0x3D, "text/css");
WELL_KNOWN_MIME_TYPES.put(0x3E, "application/vnd.wap.mms-message");
WELL_KNOWN_MIME_TYPES.put(0x3F, "application/vnd.wap.rollover-certificate");
WELL_KNOWN_MIME_TYPES.put(0x40, "application/vnd.wap.locc+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x41, "application/vnd.wap.loc+xml");
WELL_KNOWN_MIME_TYPES.put(0x42, "application/vnd.syncml.dm+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x43, "application/vnd.syncml.dm+xml");
WELL_KNOWN_MIME_TYPES.put(0x44, "application/vnd.syncml.notification");
WELL_KNOWN_MIME_TYPES.put(0x45, "application/vnd.wap.xhtml+xml");
WELL_KNOWN_MIME_TYPES.put(0x46, "application/vnd.wv.csp.cir");
WELL_KNOWN_MIME_TYPES.put(0x47, "application/vnd.oma.dd+xml");
WELL_KNOWN_MIME_TYPES.put(0x48, "application/vnd.oma.drm.message");
WELL_KNOWN_MIME_TYPES.put(0x49, "application/vnd.oma.drm.content");
WELL_KNOWN_MIME_TYPES.put(0x4A, "application/vnd.oma.drm.rights+xml");
WELL_KNOWN_MIME_TYPES.put(0x4B, "application/vnd.oma.drm.rights+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x4C, "application/vnd.wv.csp+xml");
WELL_KNOWN_MIME_TYPES.put(0x4D, "application/vnd.wv.csp+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x4E, "application/vnd.syncml.ds.notification");
WELL_KNOWN_MIME_TYPES.put(0x4F, "audio/*");
WELL_KNOWN_MIME_TYPES.put(0x50, "video/*");
WELL_KNOWN_MIME_TYPES.put(0x51, "application/vnd.oma.dd2+xml");
WELL_KNOWN_MIME_TYPES.put(0x52, "application/mikey");
WELL_KNOWN_MIME_TYPES.put(0x53, "application/vnd.oma.dcd");
WELL_KNOWN_MIME_TYPES.put(0x54, "application/vnd.oma.dcdc");
WELL_KNOWN_MIME_TYPES.put(0x0201, "application/vnd.uplanet.cacheop-wbxml");
WELL_KNOWN_MIME_TYPES.put(0x0202, "application/vnd.uplanet.signal");
WELL_KNOWN_MIME_TYPES.put(0x0203, "application/vnd.uplanet.alert-wbxml");
WELL_KNOWN_MIME_TYPES.put(0x0204, "application/vnd.uplanet.list-wbxml");
WELL_KNOWN_MIME_TYPES.put(0x0205, "application/vnd.uplanet.listcmd-wbxml");
WELL_KNOWN_MIME_TYPES.put(0x0206, "application/vnd.uplanet.channel-wbxml");
WELL_KNOWN_MIME_TYPES.put(0x0207, "application/vnd.uplanet.provisioning-status-uri");
WELL_KNOWN_MIME_TYPES.put(0x0208, "x-wap.multipart/vnd.uplanet.header-set");
WELL_KNOWN_MIME_TYPES.put(0x0209, "application/vnd.uplanet.bearer-choice-wbxml");
WELL_KNOWN_MIME_TYPES.put(0x020A, "application/vnd.phonecom.mmc-wbxml");
WELL_KNOWN_MIME_TYPES.put(0x020B, "application/vnd.nokia.syncset+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x020C, "image/x-up-wpng");
WELL_KNOWN_MIME_TYPES.put(0x0300, "application/iota.mmc-wbxml");
WELL_KNOWN_MIME_TYPES.put(0x0301, "application/iota.mmc-xml");
WELL_KNOWN_MIME_TYPES.put(0x0302, "application/vnd.syncml+xml");
WELL_KNOWN_MIME_TYPES.put(0x0303, "application/vnd.syncml+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x0304, "text/vnd.wap.emn+xml");
WELL_KNOWN_MIME_TYPES.put(0x0305, "text/calendar");
WELL_KNOWN_MIME_TYPES.put(0x0306, "application/vnd.omads-email+xml");
WELL_KNOWN_MIME_TYPES.put(0x0307, "application/vnd.omads-file+xml");
WELL_KNOWN_MIME_TYPES.put(0x0308, "application/vnd.omads-folder+xml");
WELL_KNOWN_MIME_TYPES.put(0x0309, "text/directory;profile=vCard");
WELL_KNOWN_MIME_TYPES.put(0x030A, "application/vnd.wap.emn+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x030B, "application/vnd.nokia.ipdc-purchase-response");
WELL_KNOWN_MIME_TYPES.put(0x030C, "application/vnd.motorola.screen3+xml");
WELL_KNOWN_MIME_TYPES.put(0x030D, "application/vnd.motorola.screen3+gzip");
WELL_KNOWN_MIME_TYPES.put(0x030E, "application/vnd.cmcc.setting+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x030F, "application/vnd.cmcc.bombing+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x0310, "application/vnd.docomo.pf");
WELL_KNOWN_MIME_TYPES.put(0x0311, "application/vnd.docomo.ub");
WELL_KNOWN_MIME_TYPES.put(0x0312, "application/vnd.omaloc-supl-init");
WELL_KNOWN_MIME_TYPES.put(0x0313, "application/vnd.oma.group-usage-list+xml");
WELL_KNOWN_MIME_TYPES.put(0x0314, "application/oma-directory+xml");
WELL_KNOWN_MIME_TYPES.put(0x0315, "application/vnd.docomo.pf2");
WELL_KNOWN_MIME_TYPES.put(0x0316, "application/vnd.oma.drm.roap-trigger+wbxml");
WELL_KNOWN_MIME_TYPES.put(0x0317, "application/vnd.sbm.mid2");
WELL_KNOWN_MIME_TYPES.put(0x0318, "application/vnd.wmf.bootstrap");
WELL_KNOWN_MIME_TYPES.put(0x0319, "application/vnc.cmcc.dcd+xml");
WELL_KNOWN_MIME_TYPES.put(0x031A, "application/vnd.sbm.cid");
WELL_KNOWN_MIME_TYPES.put(0x031B, "application/vnd.oma.bcast.provisioningtrigger");
WELL_KNOWN_PARAMETERS.put(0x00, "Q");
WELL_KNOWN_PARAMETERS.put(0x01, "Charset");
WELL_KNOWN_PARAMETERS.put(0x02, "Level");
WELL_KNOWN_PARAMETERS.put(0x03, "Type");
WELL_KNOWN_PARAMETERS.put(0x07, "Differences");
WELL_KNOWN_PARAMETERS.put(0x08, "Padding");
WELL_KNOWN_PARAMETERS.put(0x09, "Type");
WELL_KNOWN_PARAMETERS.put(0x0E, "Max-Age");
WELL_KNOWN_PARAMETERS.put(0x10, "Secure");
WELL_KNOWN_PARAMETERS.put(0x11, "SEC");
WELL_KNOWN_PARAMETERS.put(0x12, "MAC");
WELL_KNOWN_PARAMETERS.put(0x13, "Creation-date");
WELL_KNOWN_PARAMETERS.put(0x14, "Modification-date");
WELL_KNOWN_PARAMETERS.put(0x15, "Read-date");
WELL_KNOWN_PARAMETERS.put(0x16, "Size");
WELL_KNOWN_PARAMETERS.put(0x17, "Name");
WELL_KNOWN_PARAMETERS.put(0x18, "Filename");
WELL_KNOWN_PARAMETERS.put(0x19, "Start");
WELL_KNOWN_PARAMETERS.put(0x1A, "Start-info");
WELL_KNOWN_PARAMETERS.put(0x1B, "Comment");
WELL_KNOWN_PARAMETERS.put(0x1C, "Domain");
WELL_KNOWN_PARAMETERS.put(0x1D, "Path");
}
public static final String CONTENT_TYPE_B_PUSH_CO = "application/vnd.wap.coc";
public static final String CONTENT_TYPE_B_MMS = "application/vnd.wap.mms-message";
public static final String CONTENT_TYPE_B_PUSH_SYNCML_NOTI = "application/vnd.syncml.notification";
byte[] mWspData;
int mDataLength;
long mUnsigned32bit;
String mStringValue;
HashMap<String, String> mContentParameters;
public WspTypeDecoder(byte[] pdu) {
mWspData = pdu;
}
/**
* Decode the "Text-string" type for WSP pdu
*
* @param startIndex The starting position of the "Text-string" in this pdu
*
* @return false when error(not a Text-string) occur
* return value can be retrieved by getValueString() method length of data in pdu can be
* retrieved by getDecodedDataLength() method
*/
public boolean decodeTextString(int startIndex) {
int index = startIndex;
while (mWspData[index] != 0) {
index++;
}
mDataLength = index - startIndex + 1;
if (mWspData[startIndex] == 127) {
mStringValue = new String(mWspData, startIndex + 1, mDataLength - 2);
} else {
mStringValue = new String(mWspData, startIndex, mDataLength - 1);
}
return true;
}
/**
* Decode the "Token-text" type for WSP pdu
*
* @param startIndex The starting position of the "Token-text" in this pdu
*
* @return always true
* return value can be retrieved by getValueString() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeTokenText(int startIndex) {
int index = startIndex;
while (mWspData[index] != 0) {
index++;
}
mDataLength = index - startIndex + 1;
mStringValue = new String(mWspData, startIndex, mDataLength - 1);
return true;
}
/**
* Decode the "Short-integer" type for WSP pdu
*
* @param startIndex The starting position of the "Short-integer" in this pdu
*
* @return false when error(not a Short-integer) occur
* return value can be retrieved by getValue32() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeShortInteger(int startIndex) {
if ((mWspData[startIndex] & 0x80) == 0) {
return false;
}
mUnsigned32bit = mWspData[startIndex] & 0x7f;
mDataLength = 1;
return true;
}
/**
* Decode the "Long-integer" type for WSP pdu
*
* @param startIndex The starting position of the "Long-integer" in this pdu
*
* @return false when error(not a Long-integer) occur
* return value can be retrieved by getValue32() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeLongInteger(int startIndex) {
int lengthMultiOctet = mWspData[startIndex] & 0xff;
if (lengthMultiOctet > WAP_PDU_SHORT_LENGTH_MAX) {
return false;
}
mUnsigned32bit = 0;
for (int i = 1; i <= lengthMultiOctet; i++) {
mUnsigned32bit = (mUnsigned32bit << 8) | (mWspData[startIndex + i] & 0xff);
}
mDataLength = 1 + lengthMultiOctet;
return true;
}
/**
* Decode the "Integer-Value" type for WSP pdu
*
* @param startIndex The starting position of the "Integer-Value" in this pdu
*
* @return false when error(not a Integer-Value) occur
* return value can be retrieved by getValue32() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeIntegerValue(int startIndex) {
if (decodeShortInteger(startIndex) == true) {
return true;
}
return decodeLongInteger(startIndex);
}
/**
* Decode the "Uintvar-integer" type for WSP pdu
*
* @param startIndex The starting position of the "Uintvar-integer" in this pdu
*
* @return false when error(not a Uintvar-integer) occur
* return value can be retrieved by getValue32() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeUintvarInteger(int startIndex) {
int index = startIndex;
mUnsigned32bit = 0;
while ((mWspData[index] & 0x80) != 0) {
if ((index - startIndex) >= 4) {
return false;
}
mUnsigned32bit = (mUnsigned32bit << 7) | (mWspData[index] & 0x7f);
index++;
}
mUnsigned32bit = (mUnsigned32bit << 7) | (mWspData[index] & 0x7f);
mDataLength = index - startIndex + 1;
return true;
}
/**
* Decode the "Value-length" type for WSP pdu
*
* @param startIndex The starting position of the "Value-length" in this pdu
*
* @return false when error(not a Value-length) occur
* return value can be retrieved by getValue32() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeValueLength(int startIndex) {
if ((mWspData[startIndex] & 0xff) > WAP_PDU_LENGTH_QUOTE) {
return false;
}
if (mWspData[startIndex] < WAP_PDU_LENGTH_QUOTE) {
mUnsigned32bit = mWspData[startIndex];
mDataLength = 1;
} else {
decodeUintvarInteger(startIndex + 1);
mDataLength++;
}
return true;
}
/**
* Decode the "Extension-media" type for WSP PDU.
*
* @param startIndex The starting position of the "Extension-media" in this PDU.
*
* @return false on error, such as if there is no Extension-media at startIndex.
* Side-effects: updates stringValue (available with
* getValueString()), which will be null on error. The length of the
* data in the PDU is available with getValue32(), 0 on error.
*/
public boolean decodeExtensionMedia(int startIndex) {
int index = startIndex;
mDataLength = 0;
mStringValue = null;
int length = mWspData.length;
boolean rtrn = index < length;
while (index < length && mWspData[index] != 0) {
index++;
}
mDataLength = index - startIndex + 1;
mStringValue = new String(mWspData, startIndex, mDataLength - 1);
return rtrn;
}
/**
* Decode the "Constrained-encoding" type for WSP pdu
*
* @param startIndex The starting position of the "Constrained-encoding" in this pdu
*
* @return false when error(not a Constrained-encoding) occur
* return value can be retrieved first by getValueString() and second by getValue32() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeConstrainedEncoding(int startIndex) {
if (decodeShortInteger(startIndex) == true) {
mStringValue = null;
return true;
}
return decodeExtensionMedia(startIndex);
}
/**
* Decode the "Content-type" type for WSP pdu
*
* @param startIndex The starting position of the "Content-type" in this pdu
*
* @return false when error(not a Content-type) occurs
* If a content type exists in the headers (either as inline string, or as well-known
* value), getValueString() will return it. If a 'well known value' is encountered that
* cannot be mapped to a string mime type, getValueString() will return null, and
* getValue32() will return the unknown content type value.
* length of data in pdu can be retrieved by getDecodedDataLength() method
* Any content type parameters will be accessible via getContentParameters()
*/
public boolean decodeContentType(int startIndex) {
int mediaPrefixLength;
mContentParameters = new HashMap<String, String>();
try {
if (decodeValueLength(startIndex) == false) {
boolean found = decodeConstrainedEncoding(startIndex);
if (found) {
expandWellKnownMimeType();
}
return found;
}
int headersLength = (int) mUnsigned32bit;
mediaPrefixLength = getDecodedDataLength();
if (decodeIntegerValue(startIndex + mediaPrefixLength) == true) {
mDataLength += mediaPrefixLength;
int readLength = mDataLength;
mStringValue = null;
expandWellKnownMimeType();
long wellKnownValue = mUnsigned32bit;
String mimeType = mStringValue;
if (readContentParameters(startIndex + mDataLength,
(headersLength - (mDataLength - mediaPrefixLength)), 0)) {
mDataLength += readLength;
mUnsigned32bit = wellKnownValue;
mStringValue = mimeType;
return true;
}
return false;
}
if (decodeExtensionMedia(startIndex + mediaPrefixLength) == true) {
mDataLength += mediaPrefixLength;
int readLength = mDataLength;
expandWellKnownMimeType();
long wellKnownValue = mUnsigned32bit;
String mimeType = mStringValue;
if (readContentParameters(startIndex + mDataLength,
(headersLength - (mDataLength - mediaPrefixLength)), 0)) {
mDataLength += readLength;
mUnsigned32bit = wellKnownValue;
mStringValue = mimeType;
return true;
}
}
} catch (ArrayIndexOutOfBoundsException e) {
//something doesn't add up
return false;
}
return false;
}
private boolean readContentParameters(int startIndex, int leftToRead, int accumulator) {
int totalRead = 0;
if (leftToRead > 0) {
byte nextByte = mWspData[startIndex];
String value = null;
String param = null;
if ((nextByte & 0x80) == 0x00 && nextByte > 31) { // untyped
decodeTokenText(startIndex);
param = mStringValue;
totalRead += mDataLength;
} else { // typed
if (decodeIntegerValue(startIndex)) {
totalRead += mDataLength;
int wellKnownParameterValue = (int) mUnsigned32bit;
param = WELL_KNOWN_PARAMETERS.get(wellKnownParameterValue);
if (param == null) {
param = "unassigned/0x" + Long.toHexString(wellKnownParameterValue);
}
// special case for the "Q" parameter, value is a uintvar
if (wellKnownParameterValue == Q_VALUE) {
if (decodeUintvarInteger(startIndex + totalRead)) {
totalRead += mDataLength;
value = String.valueOf(mUnsigned32bit);
mContentParameters.put(param, value);
return readContentParameters(startIndex + totalRead, leftToRead
- totalRead, accumulator + totalRead);
} else {
return false;
}
}
} else {
return false;
}
}
if (decodeNoValue(startIndex + totalRead)) {
totalRead += mDataLength;
value = null;
} else if (decodeIntegerValue(startIndex + totalRead)) {
totalRead += mDataLength;
int intValue = (int) mUnsigned32bit;
value = String.valueOf(intValue);
} else {
decodeTokenText(startIndex + totalRead);
totalRead += mDataLength;
value = mStringValue;
if (value.startsWith("\"")) {
// quoted string, so remove the quote
value = value.substring(1);
}
}
mContentParameters.put(param, value);
return readContentParameters(startIndex + totalRead, leftToRead - totalRead,
accumulator + totalRead);
} else {
mDataLength = accumulator;
return true;
}
}
/**
* Check if the next byte is No-Value
*
* @param startIndex The starting position of the "Content length" in this pdu
*
* @return true if and only if the next byte is 0x00
*/
private boolean decodeNoValue(int startIndex) {
if (mWspData[startIndex] == 0) {
mDataLength = 1;
return true;
} else {
return false;
}
}
/**
* Populate stringValue with the mime type corresponding to the value in unsigned32bit
*
* Sets unsigned32bit to -1 if stringValue is already populated
*/
private void expandWellKnownMimeType() {
if (mStringValue == null) {
int binaryContentType = (int) mUnsigned32bit;
mStringValue = WELL_KNOWN_MIME_TYPES.get(binaryContentType);
} else {
mUnsigned32bit = -1;
}
}
/**
* Decode the "Content length" type for WSP pdu
*
* @param startIndex The starting position of the "Content length" in this pdu
*
* @return false when error(not a Content length) occur
* return value can be retrieved by getValue32() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeContentLength(int startIndex) {
return decodeIntegerValue(startIndex);
}
/**
* Decode the "Content location" type for WSP pdu
*
* @param startIndex The starting position of the "Content location" in this pdu
*
* @return false when error(not a Content location) occur
* return value can be retrieved by getValueString() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeContentLocation(int startIndex) {
return decodeTextString(startIndex);
}
/**
* Decode the "X-Wap-Application-Id" type for WSP pdu
*
* @param startIndex The starting position of the "X-Wap-Application-Id" in this pdu
*
* @return false when error(not a X-Wap-Application-Id) occur
* return value can be retrieved first by getValueString() and second by getValue32()
* method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeXWapApplicationId(int startIndex) {
if (decodeIntegerValue(startIndex) == true) {
mStringValue = null;
return true;
}
return decodeTextString(startIndex);
}
/**
* Seek for the "X-Wap-Application-Id" field for WSP pdu
*
* @param startIndex The starting position of seek pointer
* @param endIndex Valid seek area end point
*
* @return false when error(not a X-Wap-Application-Id) occur
* return value can be retrieved by getValue32()
*/
public boolean seekXWapApplicationId(int startIndex, int endIndex) {
int index = startIndex;
try {
for (index = startIndex; index <= endIndex; ) {
/**
* 8.4.1.1 Field name
* Field name is integer or text.
*/
if (decodeIntegerValue(index)) {
int fieldValue = (int) getValue32();
if (fieldValue == PARAMETER_ID_X_WAP_APPLICATION_ID) {
mUnsigned32bit = index + 1;
return true;
}
} else {
if (!decodeTextString(index)) return false;
}
index += getDecodedDataLength();
if (index > endIndex) return false;
/**
* 8.4.1.2 Field values
* Value Interpretation of First Octet
* 0 - 30 This octet is followed by the indicated number (0 - 30)
of data octets
* 31 This octet is followed by a uintvar, which indicates the number
* of data octets after it
* 32 - 127 The value is a text string, terminated by a zero octet
(NUL character)
* 128 - 255 It is an encoded 7-bit value; this header has no more data
*/
byte val = mWspData[index];
if (0 <= val && val <= WAP_PDU_SHORT_LENGTH_MAX) {
index += mWspData[index] + 1;
} else if (val == WAP_PDU_LENGTH_QUOTE) {
if (index + 1 >= endIndex) return false;
index++;
if (!decodeUintvarInteger(index)) return false;
index += getDecodedDataLength();
} else if (WAP_PDU_LENGTH_QUOTE < val && val <= 127) {
if (!decodeTextString(index)) return false;
index += getDecodedDataLength();
} else {
index++;
}
}
} catch (ArrayIndexOutOfBoundsException e) {
//seek application ID failed. WSP header might be corrupted
return false;
}
return false;
}
/**
* Decode the "X-Wap-Content-URI" type for WSP pdu
*
* @param startIndex The starting position of the "X-Wap-Content-URI" in this pdu
*
* @return false when error(not a X-Wap-Content-URI) occur
* return value can be retrieved by getValueString() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeXWapContentURI(int startIndex) {
return decodeTextString(startIndex);
}
/**
* Decode the "X-Wap-Initiator-URI" type for WSP pdu
*
* @param startIndex The starting position of the "X-Wap-Initiator-URI" in this pdu
*
* @return false when error(not a X-Wap-Initiator-URI) occur
* return value can be retrieved by getValueString() method
* length of data in pdu can be retrieved by getDecodedDataLength() method
*/
public boolean decodeXWapInitiatorURI(int startIndex) {
return decodeTextString(startIndex);
}
/**
* The data length of latest operation.
*/
public int getDecodedDataLength() {
return mDataLength;
}
/**
* The 32-bits result of latest operation.
*/
public long getValue32() {
return mUnsigned32bit;
}
/**
* The String result of latest operation.
*/
public String getValueString() {
return mStringValue;
}
/**
* Any parameters encountered as part of a decodeContentType() invocation.
*
* @return a map of content parameters keyed by their names, or null if
* decodeContentType() has not been called If any unassigned
* well-known parameters are encountered, the key of the map will be
* 'unassigned/0x...', where '...' is the hex value of the
* unassigned parameter. If a parameter has No-Value the value will be null.
*
*/
public HashMap<String, String> getContentParameters() {
return mContentParameters;
}
}
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