/*
* Copyright (C) 2007-2008 Esmertec AG.
* Copyright (C) 2007-2008 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.google.android.mms.pdu;
import android.content.ContentResolver;
import android.content.Context;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.HashMap;
public class PduComposer {
/**
* Address type.
*/
static private final int PDU_PHONE_NUMBER_ADDRESS_TYPE = 1;
static private final int PDU_EMAIL_ADDRESS_TYPE = 2;
static private final int PDU_IPV4_ADDRESS_TYPE = 3;
static private final int PDU_IPV6_ADDRESS_TYPE = 4;
static private final int PDU_UNKNOWN_ADDRESS_TYPE = 5;
/**
* Address regular expression string.
*/
static final String REGEXP_PHONE_NUMBER_ADDRESS_TYPE = "\\+?[0-9|\\.|\\-]+";
static final String REGEXP_EMAIL_ADDRESS_TYPE = "[a-zA-Z| ]*\\<{0,1}[a-zA-Z| ]+@{1}" +
"[a-zA-Z| ]+\\.{1}[a-zA-Z| ]+\\>{0,1}";
static final String REGEXP_IPV6_ADDRESS_TYPE =
"[a-fA-F]{4}\\:{1}[a-fA-F0-9]{4}\\:{1}[a-fA-F0-9]{4}\\:{1}" +
"[a-fA-F0-9]{4}\\:{1}[a-fA-F0-9]{4}\\:{1}[a-fA-F0-9]{4}\\:{1}" +
"[a-fA-F0-9]{4}\\:{1}[a-fA-F0-9]{4}";
static final String REGEXP_IPV4_ADDRESS_TYPE = "[0-9]{1,3}\\.{1}[0-9]{1,3}\\.{1}" +
"[0-9]{1,3}\\.{1}[0-9]{1,3}";
/**
* The postfix strings of address.
*/
static final String STRING_PHONE_NUMBER_ADDRESS_TYPE = "/TYPE=PLMN";
static final String STRING_IPV4_ADDRESS_TYPE = "/TYPE=IPV4";
static final String STRING_IPV6_ADDRESS_TYPE = "/TYPE=IPV6";
/**
* Error values.
*/
static private final int PDU_COMPOSE_SUCCESS = 0;
static private final int PDU_COMPOSE_CONTENT_ERROR = 1;
static private final int PDU_COMPOSE_FIELD_NOT_SET = 2;
static private final int PDU_COMPOSE_FIELD_NOT_SUPPORTED = 3;
/**
* WAP values defined in WSP spec.
*/
static private final int QUOTED_STRING_FLAG = 34;
static private final int END_STRING_FLAG = 0;
static private final int LENGTH_QUOTE = 31;
static private final int TEXT_MAX = 127;
static private final int SHORT_INTEGER_MAX = 127;
static private final int LONG_INTEGER_LENGTH_MAX = 8;
/**
* Block size when read data from InputStream.
*/
static private final int PDU_COMPOSER_BLOCK_SIZE = 1024;
/**
* The output message.
*/
protected ByteArrayOutputStream mMessage = null;
/**
* The PDU.
*/
private GenericPdu mPdu = null;
/**
* Current visiting position of the mMessage.
*/
protected int mPosition = 0;
/**
* Message compose buffer stack.
*/
private BufferStack mStack = null;
/**
* Content resolver.
*/
private final ContentResolver mResolver;
/**
* Header of this pdu.
*/
private PduHeaders mPduHeader = null;
/**
* Map of all content type
*/
private static HashMap<String, Integer> mContentTypeMap = null;
static {
mContentTypeMap = new HashMap<String, Integer>();
int i;
for (i = 0; i < PduContentTypes.contentTypes.length; i++) {
mContentTypeMap.put(PduContentTypes.contentTypes[i], i);
}
}
/**
* Constructor.
*
* @param context the context
* @param pdu the pdu to be composed
*/
public PduComposer(Context context, GenericPdu pdu) {
mPdu = pdu;
mResolver = context.getContentResolver();
mPduHeader = pdu.getPduHeaders();
mStack = new BufferStack();
mMessage = new ByteArrayOutputStream();
mPosition = 0;
}
/**
* Make the message. No need to check whether mandatory fields are set,
* because the constructors of outgoing pdus are taking care of this.
*
* @return OutputStream of maked message. Return null if
* the PDU is invalid.
*/
public byte[] make() {
// Get Message-type.
int type = mPdu.getMessageType();
/* make the message */
switch (type) {
case PduHeaders.MESSAGE_TYPE_SEND_REQ:
if (makeSendReqPdu() != PDU_COMPOSE_SUCCESS) {
return null;
}
break;
case PduHeaders.MESSAGE_TYPE_NOTIFYRESP_IND:
if (makeNotifyResp() != PDU_COMPOSE_SUCCESS) {
return null;
}
break;
case PduHeaders.MESSAGE_TYPE_ACKNOWLEDGE_IND:
if (makeAckInd() != PDU_COMPOSE_SUCCESS) {
return null;
}
break;
case PduHeaders.MESSAGE_TYPE_READ_REC_IND:
if (makeReadRecInd() != PDU_COMPOSE_SUCCESS) {
return null;
}
break;
default:
return null;
}
return mMessage.toByteArray();
}
/**
* Copy buf to mMessage.
*/
protected void arraycopy(byte[] buf, int pos, int length) {
mMessage.write(buf, pos, length);
mPosition = mPosition + length;
}
/**
* Append a byte to mMessage.
*/
protected void append(int value) {
mMessage.write(value);
mPosition ++;
}
/**
* Append short integer value to mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendShortInteger(int value) {
/*
* From WAP-230-WSP-20010705-a:
* Short-integer = OCTET
* ; Integers in range 0-127 shall be encoded as a one octet value
* ; with the most significant bit set to one (1xxx xxxx) and with
* ; the value in the remaining least significant bits.
* In our implementation, only low 7 bits are stored and otherwise
* bits are ignored.
*/
append((value | 0x80) & 0xff);
}
/**
* Append an octet number between 128 and 255 into mMessage.
* NOTE:
* A value between 0 and 127 should be appended by using appendShortInteger.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendOctet(int number) {
append(number);
}
/**
* Append a short length into mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendShortLength(int value) {
/*
* From WAP-230-WSP-20010705-a:
* Short-length = <Any octet 0-30>
*/
append(value);
}
/**
* Append long integer into mMessage. it's used for really long integers.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendLongInteger(long longInt) {
/*
* From WAP-230-WSP-20010705-a:
* Long-integer = Short-length Multi-octet-integer
* ; The Short-length indicates the length of the Multi-octet-integer
* Multi-octet-integer = 1*30 OCTET
* ; The content octets shall be an unsigned integer value with the
* ; most significant octet encoded first (big-endian representation).
* ; The minimum number of octets must be used to encode the value.
*/
int size;
long temp = longInt;
// Count the length of the long integer.
for(size = 0; (temp != 0) && (size < LONG_INTEGER_LENGTH_MAX); size++) {
temp = (temp >>> 8);
}
// Set Length.
appendShortLength(size);
// Count and set the long integer.
int i;
int shift = (size -1) * 8;
for (i = 0; i < size; i++) {
append((int)((longInt >>> shift) & 0xff));
shift = shift - 8;
}
}
/**
* Append text string into mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendTextString(byte[] text) {
/*
* From WAP-230-WSP-20010705-a:
* Text-string = [Quote] *TEXT End-of-string
* ; If the first character in the TEXT is in the range of 128-255,
* ; a Quote character must precede it. Otherwise the Quote character
* ;must be omitted. The Quote is not part of the contents.
*/
if (((text[0])&0xff) > TEXT_MAX) { // No need to check for <= 255
append(TEXT_MAX);
}
arraycopy(text, 0, text.length);
append(0);
}
/**
* Append text string into mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendTextString(String str) {
/*
* From WAP-230-WSP-20010705-a:
* Text-string = [Quote] *TEXT End-of-string
* ; If the first character in the TEXT is in the range of 128-255,
* ; a Quote character must precede it. Otherwise the Quote character
* ;must be omitted. The Quote is not part of the contents.
*/
appendTextString(str.getBytes());
}
/**
* Append encoded string value to mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendEncodedString(EncodedStringValue enStr) {
/*
* From OMA-TS-MMS-ENC-V1_3-20050927-C:
* Encoded-string-value = Text-string | Value-length Char-set Text-string
*/
assert(enStr != null);
int charset = enStr.getCharacterSet();
byte[] textString = enStr.getTextString();
if (null == textString) {
return;
}
/*
* In the implementation of EncodedStringValue, the charset field will
* never be 0. It will always be composed as
* Encoded-string-value = Value-length Char-set Text-string
*/
mStack.newbuf();
PositionMarker start = mStack.mark();
appendShortInteger(charset);
appendTextString(textString);
int len = start.getLength();
mStack.pop();
appendValueLength(len);
mStack.copy();
}
/**
* Append uintvar integer into mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendUintvarInteger(long value) {
/*
* From WAP-230-WSP-20010705-a:
* To encode a large unsigned integer, split it into 7-bit fragments
* and place them in the payloads of multiple octets. The most significant
* bits are placed in the first octets with the least significant bits
* ending up in the last octet. All octets MUST set the Continue bit to 1
* except the last octet, which MUST set the Continue bit to 0.
*/
int i;
long max = SHORT_INTEGER_MAX;
for (i = 0; i < 5; i++) {
if (value < max) {
break;
}
max = (max << 7) | 0x7fl;
}
while(i > 0) {
long temp = value >>> (i * 7);
temp = temp & 0x7f;
append((int)((temp | 0x80) & 0xff));
i--;
}
append((int)(value & 0x7f));
}
/**
* Append date value into mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendDateValue(long date) {
/*
* From OMA-TS-MMS-ENC-V1_3-20050927-C:
* Date-value = Long-integer
*/
appendLongInteger(date);
}
/**
* Append value length to mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendValueLength(long value) {
/*
* From WAP-230-WSP-20010705-a:
* Value-length = Short-length | (Length-quote Length)
* ; Value length is used to indicate the length of the value to follow
* Short-length = <Any octet 0-30>
* Length-quote = <Octet 31>
* Length = Uintvar-integer
*/
if (value < LENGTH_QUOTE) {
appendShortLength((int) value);
return;
}
append(LENGTH_QUOTE);
appendUintvarInteger(value);
}
/**
* Append quoted string to mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendQuotedString(byte[] text) {
/*
* From WAP-230-WSP-20010705-a:
* Quoted-string = <Octet 34> *TEXT End-of-string
* ;The TEXT encodes an RFC2616 Quoted-string with the enclosing
* ;quotation-marks <"> removed.
*/
append(QUOTED_STRING_FLAG);
arraycopy(text, 0, text.length);
append(END_STRING_FLAG);
}
/**
* Append quoted string to mMessage.
* This implementation doesn't check the validity of parameter, since it
* assumes that the values are validated in the GenericPdu setter methods.
*/
protected void appendQuotedString(String str) {
/*
* From WAP-230-WSP-20010705-a:
* Quoted-string = <Octet 34> *TEXT End-of-string
* ;The TEXT encodes an RFC2616 Quoted-string with the enclosing
* ;quotation-marks <"> removed.
*/
appendQuotedString(str.getBytes());
}
/**
* Append header to mMessage.
*/
private int appendHeader(int field) {
switch (field) {
case PduHeaders.MMS_VERSION:
appendOctet(field);
int version = mPduHeader.getOctet(field);
if (0 == version) {
appendShortInteger(PduHeaders.CURRENT_MMS_VERSION);
} else {
appendShortInteger(version);
}
break;
case PduHeaders.MESSAGE_ID:
case PduHeaders.TRANSACTION_ID:
byte[] textString = mPduHeader.getTextString(field);
if (null == textString) {
return PDU_COMPOSE_FIELD_NOT_SET;
}
appendOctet(field);
appendTextString(textString);
break;
case PduHeaders.TO:
case PduHeaders.BCC:
case PduHeaders.CC:
EncodedStringValue[] addr = mPduHeader.getEncodedStringValues(field);
if (null == addr) {
return PDU_COMPOSE_FIELD_NOT_SET;
}
EncodedStringValue temp;
for (int i = 0; i < addr.length; i++) {
try {
int addressType = checkAddressType(addr[i].getString());
temp = EncodedStringValue.copy(addr[i]);
if (PDU_PHONE_NUMBER_ADDRESS_TYPE == addressType) {
// Phone number.
temp.appendTextString(
STRING_PHONE_NUMBER_ADDRESS_TYPE.getBytes());
} else if (PDU_IPV4_ADDRESS_TYPE == addressType) {
// Ipv4 address.
temp.appendTextString(STRING_IPV4_ADDRESS_TYPE.getBytes());
} else if (PDU_IPV6_ADDRESS_TYPE == addressType) {
// Ipv6 address.
temp.appendTextString(STRING_IPV6_ADDRESS_TYPE.getBytes());
}
} catch (NullPointerException e) {
return PDU_COMPOSE_CONTENT_ERROR;
}
appendOctet(field);
appendEncodedString(temp);
}
break;
case PduHeaders.FROM:
// Value-length (Address-present-token Encoded-string-value | Insert-address-token)
appendOctet(field);
EncodedStringValue from = mPduHeader.getEncodedStringValue(field);
if ((from == null)
|| new String(from.getTextString()).equals(
PduHeaders.FROM_INSERT_ADDRESS_TOKEN_STR)) {
// Length of from = 1
append(1);
// Insert-address-token = <Octet 129>
append(PduHeaders.FROM_INSERT_ADDRESS_TOKEN);
} else {
mStack.newbuf();
PositionMarker fstart = mStack.mark();
// Address-present-token = <Octet 128>
append(PduHeaders.FROM_ADDRESS_PRESENT_TOKEN);
appendEncodedString(from);
int flen = fstart.getLength();
mStack.pop();
appendValueLength(flen);
mStack.copy();
}
break;
case PduHeaders.READ_STATUS:
case PduHeaders.STATUS:
case PduHeaders.REPORT_ALLOWED:
case PduHeaders.PRIORITY:
case PduHeaders.DELIVERY_REPORT:
case PduHeaders.READ_REPORT:
int octet = mPduHeader.getOctet(field);
if (0 == octet) {
return PDU_COMPOSE_FIELD_NOT_SET;
}
appendOctet(field);
appendOctet(octet);
break;
case PduHeaders.DATE:
long date = mPduHeader.getLongInteger(field);
if (-1 == date) {
return PDU_COMPOSE_FIELD_NOT_SET;
}
appendOctet(field);
appendDateValue(date);
break;
case PduHeaders.SUBJECT:
EncodedStringValue enString =
mPduHeader.getEncodedStringValue(field);
if (null == enString) {
return PDU_COMPOSE_FIELD_NOT_SET;
}
appendOctet(field);
appendEncodedString(enString);
break;
case PduHeaders.MESSAGE_CLASS:
byte[] messageClass = mPduHeader.getTextString(field);
if (null == messageClass) {
return PDU_COMPOSE_FIELD_NOT_SET;
}
appendOctet(field);
if (Arrays.equals(messageClass,
PduHeaders.MESSAGE_CLASS_ADVERTISEMENT_STR.getBytes())) {
appendOctet(PduHeaders.MESSAGE_CLASS_ADVERTISEMENT);
} else if (Arrays.equals(messageClass,
PduHeaders.MESSAGE_CLASS_AUTO_STR.getBytes())) {
appendOctet(PduHeaders.MESSAGE_CLASS_AUTO);
} else if (Arrays.equals(messageClass,
PduHeaders.MESSAGE_CLASS_PERSONAL_STR.getBytes())) {
appendOctet(PduHeaders.MESSAGE_CLASS_PERSONAL);
} else if (Arrays.equals(messageClass,
PduHeaders.MESSAGE_CLASS_INFORMATIONAL_STR.getBytes())) {
appendOctet(PduHeaders.MESSAGE_CLASS_INFORMATIONAL);
} else {
appendTextString(messageClass);
}
break;
case PduHeaders.EXPIRY:
long expiry = mPduHeader.getLongInteger(field);
if (-1 == expiry) {
return PDU_COMPOSE_FIELD_NOT_SET;
}
appendOctet(field);
mStack.newbuf();
PositionMarker expiryStart = mStack.mark();
append(PduHeaders.VALUE_RELATIVE_TOKEN);
appendLongInteger(expiry);
int expiryLength = expiryStart.getLength();
mStack.pop();
appendValueLength(expiryLength);
mStack.copy();
break;
default:
return PDU_COMPOSE_FIELD_NOT_SUPPORTED;
}
return PDU_COMPOSE_SUCCESS;
}
/**
* Make ReadRec.Ind.
*/
private int makeReadRecInd() {
if (mMessage == null) {
mMessage = new ByteArrayOutputStream();
mPosition = 0;
}
// X-Mms-Message-Type
appendOctet(PduHeaders.MESSAGE_TYPE);
appendOctet(PduHeaders.MESSAGE_TYPE_READ_REC_IND);
// X-Mms-MMS-Version
if (appendHeader(PduHeaders.MMS_VERSION) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// Message-ID
if (appendHeader(PduHeaders.MESSAGE_ID) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// To
if (appendHeader(PduHeaders.TO) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// From
if (appendHeader(PduHeaders.FROM) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// Date Optional
appendHeader(PduHeaders.DATE);
// X-Mms-Read-Status
if (appendHeader(PduHeaders.READ_STATUS) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// X-Mms-Applic-ID Optional(not support)
// X-Mms-Reply-Applic-ID Optional(not support)
// X-Mms-Aux-Applic-Info Optional(not support)
return PDU_COMPOSE_SUCCESS;
}
/**
* Make NotifyResp.Ind.
*/
private int makeNotifyResp() {
if (mMessage == null) {
mMessage = new ByteArrayOutputStream();
mPosition = 0;
}
// X-Mms-Message-Type
appendOctet(PduHeaders.MESSAGE_TYPE);
appendOctet(PduHeaders.MESSAGE_TYPE_NOTIFYRESP_IND);
// X-Mms-Transaction-ID
if (appendHeader(PduHeaders.TRANSACTION_ID) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// X-Mms-MMS-Version
if (appendHeader(PduHeaders.MMS_VERSION) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// X-Mms-Status
if (appendHeader(PduHeaders.STATUS) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// X-Mms-Report-Allowed Optional (not support)
return PDU_COMPOSE_SUCCESS;
}
/**
* Make Acknowledge.Ind.
*/
private int makeAckInd() {
if (mMessage == null) {
mMessage = new ByteArrayOutputStream();
mPosition = 0;
}
// X-Mms-Message-Type
appendOctet(PduHeaders.MESSAGE_TYPE);
appendOctet(PduHeaders.MESSAGE_TYPE_ACKNOWLEDGE_IND);
// X-Mms-Transaction-ID
if (appendHeader(PduHeaders.TRANSACTION_ID) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// X-Mms-MMS-Version
if (appendHeader(PduHeaders.MMS_VERSION) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// X-Mms-Report-Allowed Optional
appendHeader(PduHeaders.REPORT_ALLOWED);
return PDU_COMPOSE_SUCCESS;
}
/**
* Make Send.req.
*/
private int makeSendReqPdu() {
if (mMessage == null) {
mMessage = new ByteArrayOutputStream();
mPosition = 0;
}
// X-Mms-Message-Type
appendOctet(PduHeaders.MESSAGE_TYPE);
appendOctet(PduHeaders.MESSAGE_TYPE_SEND_REQ);
// X-Mms-Transaction-ID
appendOctet(PduHeaders.TRANSACTION_ID);
byte[] trid = mPduHeader.getTextString(PduHeaders.TRANSACTION_ID);
if (trid == null) {
// Transaction-ID should be set(by Transaction) before make().
throw new IllegalArgumentException("Transaction-ID is null.");
}
appendTextString(trid);
// X-Mms-MMS-Version
if (appendHeader(PduHeaders.MMS_VERSION) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// Date Date-value Optional.
appendHeader(PduHeaders.DATE);
// From
if (appendHeader(PduHeaders.FROM) != PDU_COMPOSE_SUCCESS) {
return PDU_COMPOSE_CONTENT_ERROR;
}
boolean recipient = false;
// To
if (appendHeader(PduHeaders.TO) != PDU_COMPOSE_CONTENT_ERROR) {
recipient = true;
}
// Cc
if (appendHeader(PduHeaders.CC) != PDU_COMPOSE_CONTENT_ERROR) {
recipient = true;
}
// Bcc
if (appendHeader(PduHeaders.BCC) != PDU_COMPOSE_CONTENT_ERROR) {
recipient = true;
}
// Need at least one of "cc", "bcc" and "to".
if (false == recipient) {
return PDU_COMPOSE_CONTENT_ERROR;
}
// Subject Optional
appendHeader(PduHeaders.SUBJECT);
// X-Mms-Message-Class Optional
// Message-class-value = Class-identifier | Token-text
appendHeader(PduHeaders.MESSAGE_CLASS);
// X-Mms-Expiry Optional
appendHeader(PduHeaders.EXPIRY);
// X-Mms-Priority Optional
appendHeader(PduHeaders.PRIORITY);
// X-Mms-Delivery-Report Optional
appendHeader(PduHeaders.DELIVERY_REPORT);
// X-Mms-Read-Report Optional
appendHeader(PduHeaders.READ_REPORT);
// Content-Type
appendOctet(PduHeaders.CONTENT_TYPE);
// Message body
makeMessageBody();
return PDU_COMPOSE_SUCCESS; // Composing the message is OK
}
/**
* Make message body.
*/
private int makeMessageBody() {
// 1. add body informations
mStack.newbuf(); // Switching buffer because we need to
PositionMarker ctStart = mStack.mark();
// This contentTypeIdentifier should be used for type of attachment...
String contentType = new String(
mPduHeader.getTextString(PduHeaders.CONTENT_TYPE));
Integer contentTypeIdentifier = mContentTypeMap.get(contentType);
if (contentTypeIdentifier == null) {
// content type is mandatory
return PDU_COMPOSE_CONTENT_ERROR;
}
appendShortInteger(contentTypeIdentifier.intValue());
// content-type parameter: start
PduBody body = ((SendReq) mPdu).getBody();
if (null == body) {
// empty message
appendUintvarInteger(0);
mStack.pop();
mStack.copy();
return PDU_COMPOSE_SUCCESS;
}
PduPart part;
try {
part = body.getPart(0);
byte[] start = part.getContentId();
if (start != null) {
appendOctet(PduPart.P_DEP_START);
if (('<' == start[0]) && ('>' == start[start.length - 1])) {
appendTextString(start);
} else {
appendTextString("<" + new String(start) + ">");
}
}
// content-type parameter: type
appendOctet(PduPart.P_CT_MR_TYPE);
appendTextString(part.getContentType());
}
catch (ArrayIndexOutOfBoundsException e){
e.printStackTrace();
}
int ctLength = ctStart.getLength();
mStack.pop();
appendValueLength(ctLength);
mStack.copy();
// 3. add content
int partNum = body.getPartsNum();
appendUintvarInteger(partNum);
for (int i = 0; i < partNum; i++) {
part = body.getPart(i);
mStack.newbuf(); // Leaving space for header lengh and data length
PositionMarker attachment = mStack.mark();
mStack.newbuf(); // Leaving space for Content-Type length
PositionMarker contentTypeBegin = mStack.mark();
byte[] partContentType = part.getContentType();
if (partContentType == null) {
// content type is mandatory
return PDU_COMPOSE_CONTENT_ERROR;
}
// content-type value
Integer partContentTypeIdentifier =
mContentTypeMap.get(new String(partContentType));
if (partContentTypeIdentifier == null) {
appendTextString(partContentType);
} else {
appendShortInteger(partContentTypeIdentifier.intValue());
}
/* Content-type parameter : name.
* The value of name, filename, content-location is the same.
* Just one of them is enough for this PDU.
*/
byte[] name = part.getName();
if (null == name) {
name = part.getFilename();
if (null == name) {
name = part.getContentLocation();
if (null == name) {
/* at lease one of name, filename, Content-location
* should be available.
*/
return PDU_COMPOSE_CONTENT_ERROR;
}
}
}
appendOctet(PduPart.P_DEP_NAME);
appendTextString(name);
// content-type parameter : charset
int charset = part.getCharset();
if (charset != 0) {
appendOctet(PduPart.P_CHARSET);
appendShortInteger(charset);
}
int contentTypeLength = contentTypeBegin.getLength();
mStack.pop();
appendValueLength(contentTypeLength);
mStack.copy();
// content id
byte[] contentId = part.getContentId();
if (null != contentId) {
appendOctet(PduPart.P_CONTENT_ID);
if (('<' == contentId[0]) && ('>' == contentId[contentId.length - 1])) {
appendQuotedString(contentId);
} else {
appendQuotedString("<" + new String(contentId) + ">");
}
}
// content-location
byte[] contentLocation = part.getContentLocation();
if (null != contentLocation) {
appendOctet(PduPart.P_CONTENT_LOCATION);
appendTextString(contentLocation);
}
// content
int headerLength = attachment.getLength();
int dataLength = 0; // Just for safety...
byte[] partData = part.getData();
if (partData != null) {
arraycopy(partData, 0, partData.length);
dataLength = partData.length;
} else {
InputStream cr;
try {
byte[] buffer = new byte[PDU_COMPOSER_BLOCK_SIZE];
cr = mResolver.openInputStream(part.getDataUri());
int len = 0;
while ((len = cr.read(buffer)) != -1) {
mMessage.write(buffer, 0, len);
mPosition += len;
dataLength += len;
}
} catch (FileNotFoundException e) {
return PDU_COMPOSE_CONTENT_ERROR;
} catch (IOException e) {
return PDU_COMPOSE_CONTENT_ERROR;
} catch (RuntimeException e) {
return PDU_COMPOSE_CONTENT_ERROR;
}
}
if (dataLength != (attachment.getLength() - headerLength)) {
throw new RuntimeException("BUG: Length sanity check failed");
}
mStack.pop();
appendUintvarInteger(headerLength);
appendUintvarInteger(dataLength);
mStack.copy();
}
return PDU_COMPOSE_SUCCESS;
}
/**
* Record current message informations.
*/
static private class LengthRecordNode {
ByteArrayOutputStream currentMessage = null;
public int currentPosition = 0;
public LengthRecordNode next = null;
}
/**
* Mark current message position and stact size.
*/
private class PositionMarker {
private int c_pos; // Current position
private int currentStackSize; // Current stack size
int getLength() {
// If these assert fails, likely that you are finding the
// size of buffer that is deep in BufferStack you can only
// find the length of the buffer that is on top
if (currentStackSize != mStack.stackSize) {
throw new RuntimeException("BUG: Invalid call to getLength()");
}
return mPosition - c_pos;
}
}
/**
* This implementation can be OPTIMIZED to use only
* 2 buffers. This optimization involves changing BufferStack
* only... Its usage (interface) will not change.
*/
private class BufferStack {
private LengthRecordNode stack = null;
private LengthRecordNode toCopy = null;
int stackSize = 0;
/**
* Create a new message buffer and push it into the stack.
*/
void newbuf() {
// You can't create a new buff when toCopy != null
// That is after calling pop() and before calling copy()
// If you do, it is a bug
if (toCopy != null) {
throw new RuntimeException("BUG: Invalid newbuf() before copy()");
}
LengthRecordNode temp = new LengthRecordNode();
temp.currentMessage = mMessage;
temp.currentPosition = mPosition;
temp.next = stack;
stack = temp;
stackSize = stackSize + 1;
mMessage = new ByteArrayOutputStream();
mPosition = 0;
}
/**
* Pop the message before and record current message in the stack.
*/
void pop() {
ByteArrayOutputStream currentMessage = mMessage;
int currentPosition = mPosition;
mMessage = stack.currentMessage;
mPosition = stack.currentPosition;
toCopy = stack;
// Re using the top element of the stack to avoid memory allocation
stack = stack.next;
stackSize = stackSize - 1;
toCopy.currentMessage = currentMessage;
toCopy.currentPosition = currentPosition;
}
/**
* Append current message to the message before.
*/
void copy() {
arraycopy(toCopy.currentMessage.toByteArray(), 0,
toCopy.currentPosition);
toCopy = null;
}
/**
* Mark current message position
*/
PositionMarker mark() {
PositionMarker m = new PositionMarker();
m.c_pos = mPosition;
m.currentStackSize = stackSize;
return m;
}
}
/**
* Check address type.
*
* @param address address string without the postfix stinng type,
* such as "/TYPE=PLMN", "/TYPE=IPv6" and "/TYPE=IPv4"
* @return PDU_PHONE_NUMBER_ADDRESS_TYPE if it is phone number,
* PDU_EMAIL_ADDRESS_TYPE if it is email address,
* PDU_IPV4_ADDRESS_TYPE if it is ipv4 address,
* PDU_IPV6_ADDRESS_TYPE if it is ipv6 address,
* PDU_UNKNOWN_ADDRESS_TYPE if it is unknown.
*/
protected static int checkAddressType(String address) {
/**
* From OMA-TS-MMS-ENC-V1_3-20050927-C.pdf, section 8.
* address = ( e-mail / device-address / alphanum-shortcode / num-shortcode)
* e-mail = mailbox; to the definition of mailbox as described in
* section 3.4 of [RFC2822], but excluding the
* obsolete definitions as indicated by the "obs-" prefix.
* device-address = ( global-phone-number "/TYPE=PLMN" )
* / ( ipv4 "/TYPE=IPv4" ) / ( ipv6 "/TYPE=IPv6" )
* / ( escaped-value "/TYPE=" address-type )
*
* global-phone-number = ["+"] 1*( DIGIT / written-sep )
* written-sep =("-"/".")
*
* ipv4 = 1*3DIGIT 3( "." 1*3DIGIT ) ; IPv4 address value
*
* ipv6 = 4HEXDIG 7( ":" 4HEXDIG ) ; IPv6 address per RFC 2373
*/
if (null == address) {
return PDU_UNKNOWN_ADDRESS_TYPE;
}
if (address.matches(REGEXP_IPV4_ADDRESS_TYPE)) {
// Ipv4 address.
return PDU_IPV4_ADDRESS_TYPE;
}else if (address.matches(REGEXP_PHONE_NUMBER_ADDRESS_TYPE)) {
// Phone number.
return PDU_PHONE_NUMBER_ADDRESS_TYPE;
} else if (address.matches(REGEXP_EMAIL_ADDRESS_TYPE)) {
// Email address.
return PDU_EMAIL_ADDRESS_TYPE;
} else if (address.matches(REGEXP_IPV6_ADDRESS_TYPE)) {
// Ipv6 address.
return PDU_IPV6_ADDRESS_TYPE;
} else {
// Unknown address.
return PDU_UNKNOWN_ADDRESS_TYPE;
}
}
}