Java tutorial
/* * 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.android.messaging.mmslib.pdu; import android.content.ContentResolver; import android.content.Context; import android.support.v4.util.SimpleArrayMap; import android.text.TextUtils; import java.io.ByteArrayOutputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.util.Arrays; public class PduComposer { /** * Address type. */ private static final int PDU_PHONE_NUMBER_ADDRESS_TYPE = 1; private static final int PDU_EMAIL_ADDRESS_TYPE = 2; private static final int PDU_IPV4_ADDRESS_TYPE = 3; private static final int PDU_IPV6_ADDRESS_TYPE = 4; private static 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. */ private static final int PDU_COMPOSE_SUCCESS = 0; private static final int PDU_COMPOSE_CONTENT_ERROR = 1; private static final int PDU_COMPOSE_FIELD_NOT_SET = 2; private static final int PDU_COMPOSE_FIELD_NOT_SUPPORTED = 3; /** * WAP values defined in WSP spec. */ private static final int QUOTED_STRING_FLAG = 34; private static final int END_STRING_FLAG = 0; private static final int LENGTH_QUOTE = 31; private static final int TEXT_MAX = 127; private static final int SHORT_INTEGER_MAX = 127; private static final int LONG_INTEGER_LENGTH_MAX = 8; /** * Block size when read data from InputStream. */ private static 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 SimpleArrayMap<String, Integer> mContentTypeMap = null; static { mContentTypeMap = new SimpleArrayMap<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(final Context context, final 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. final 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; case PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND: if (makeNotificationInd() != PDU_COMPOSE_SUCCESS) { return null; } break; default: return null; } return mMessage.toByteArray(); } /** * Copy buf to mMessage. */ protected void arraycopy(final byte[] buf, final int pos, final int length) { mMessage.write(buf, pos, length); mPosition = mPosition + length; } /** * Append a byte to mMessage. */ protected void append(final 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(final 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(final 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(final 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(final 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(final 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(final 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(final 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); final int charset = enStr.getCharacterSet(); final 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(); final PositionMarker start = mStack.mark(); appendShortInteger(charset); appendTextString(textString); final 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(final 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(final 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(final 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(final 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(final 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()); } private EncodedStringValue appendAddressType(final EncodedStringValue address) { EncodedStringValue temp = null; try { final int addressType = checkAddressType(address.getString()); temp = EncodedStringValue.copy(address); 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 (final NullPointerException e) { return null; } return temp; } /** * Append header to mMessage. */ private int appendHeader(final int field) { switch (field) { case PduHeaders.MMS_VERSION: appendOctet(field); final 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: case PduHeaders.CONTENT_LOCATION: final 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: final EncodedStringValue[] addr = mPduHeader.getEncodedStringValues(field); if (null == addr) { return PDU_COMPOSE_FIELD_NOT_SET; } EncodedStringValue temp; for (int i = 0; i < addr.length; i++) { temp = appendAddressType(addr[i]); if (temp == null) { 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); final EncodedStringValue from = mPduHeader.getEncodedStringValue(field); if ((from == null) || TextUtils.isEmpty(from.getString()) || 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(); final PositionMarker fstart = mStack.mark(); // Address-present-token = <Octet 128> append(PduHeaders.FROM_ADDRESS_PRESENT_TOKEN); temp = appendAddressType(from); if (temp == null) { return PDU_COMPOSE_CONTENT_ERROR; } appendEncodedString(temp); final 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: final int octet = mPduHeader.getOctet(field); if (0 == octet) { return PDU_COMPOSE_FIELD_NOT_SET; } appendOctet(field); appendOctet(octet); break; case PduHeaders.DATE: final long date = mPduHeader.getLongInteger(field); if (-1 == date) { return PDU_COMPOSE_FIELD_NOT_SET; } appendOctet(field); appendDateValue(date); break; case PduHeaders.SUBJECT: final EncodedStringValue enString = mPduHeader.getEncodedStringValue(field); if (null == enString) { return PDU_COMPOSE_FIELD_NOT_SET; } appendOctet(field); appendEncodedString(enString); break; case PduHeaders.MESSAGE_CLASS: final 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: case PduHeaders.MESSAGE_SIZE: final long value = mPduHeader.getLongInteger(field); if (-1 == value) { return PDU_COMPOSE_FIELD_NOT_SET; } appendOctet(field); mStack.newbuf(); final PositionMarker valueStart = mStack.mark(); append(PduHeaders.VALUE_RELATIVE_TOKEN); appendLongInteger(value); final int valueLength = valueStart.getLength(); mStack.pop(); appendValueLength(valueLength); 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 Acknowledge.Ind. */ private int makeNotificationInd() { if (mMessage == null) { mMessage = new ByteArrayOutputStream(); mPosition = 0; } // X-Mms-Message-Type appendOctet(PduHeaders.MESSAGE_TYPE); appendOctet(PduHeaders.MESSAGE_TYPE_NOTIFICATION_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; } // From if (appendHeader(PduHeaders.FROM) != PDU_COMPOSE_SUCCESS) { return PDU_COMPOSE_CONTENT_ERROR; } // Subject Optional appendHeader(PduHeaders.SUBJECT); // Expiry if (appendHeader(PduHeaders.MESSAGE_CLASS) != PDU_COMPOSE_SUCCESS) { return PDU_COMPOSE_CONTENT_ERROR; } // Expiry if (appendHeader(PduHeaders.MESSAGE_SIZE) != PDU_COMPOSE_SUCCESS) { return PDU_COMPOSE_CONTENT_ERROR; } // Expiry if (appendHeader(PduHeaders.EXPIRY) != PDU_COMPOSE_SUCCESS) { return PDU_COMPOSE_CONTENT_ERROR; } // X-Mms-Content-Location if (appendHeader(PduHeaders.CONTENT_LOCATION) != PDU_COMPOSE_SUCCESS) { return PDU_COMPOSE_CONTENT_ERROR; } 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); final 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 return makeMessageBody(); } /** * Make message body. */ private int makeMessageBody() { // 1. add body informations mStack.newbuf(); // Switching buffer because we need to final PositionMarker ctStart = mStack.mark(); // This contentTypeIdentifier should be used for type of attachment... final String contentType = new String(mPduHeader.getTextString(PduHeaders.CONTENT_TYPE)); final Integer contentTypeIdentifier = mContentTypeMap.get(contentType); if (contentTypeIdentifier == null) { // content type is mandatory return PDU_COMPOSE_CONTENT_ERROR; } appendShortInteger(contentTypeIdentifier.intValue()); // content-type parameter: start final PduBody body = ((SendReq) mPdu).getBody(); if (null == body || body.getPartsNum() == 0) { // empty message appendUintvarInteger(0); mStack.pop(); mStack.copy(); return PDU_COMPOSE_SUCCESS; } PduPart part; try { part = body.getPart(0); final 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 (final ArrayIndexOutOfBoundsException e) { e.printStackTrace(); } final int ctLength = ctStart.getLength(); mStack.pop(); appendValueLength(ctLength); mStack.copy(); // 3. add content final 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 final PositionMarker attachment = mStack.mark(); mStack.newbuf(); // Leaving space for Content-Type length final PositionMarker contentTypeBegin = mStack.mark(); final byte[] partContentType = part.getContentType(); if (partContentType == null) { // content type is mandatory return PDU_COMPOSE_CONTENT_ERROR; } // content-type value final 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. */ // I found that an mms received from tmomail.net will include a SMIL part // that has no name. That would cause the code here to return // PDU_COMPOSE_CONTENT_ERROR when a user tried to forward the message. The // message would never send and the user would be stuck in a retry // situation. Simply jam in any old name here to fix the problem. name = "smil.xml".getBytes(); } } } appendOctet(PduPart.P_DEP_NAME); appendTextString(name); // content-type parameter : charset final int charset = part.getCharset(); if (charset != 0) { appendOctet(PduPart.P_CHARSET); appendShortInteger(charset); } final int contentTypeLength = contentTypeBegin.getLength(); mStack.pop(); appendValueLength(contentTypeLength); mStack.copy(); // content id final 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 final byte[] contentLocation = part.getContentLocation(); if (null != contentLocation) { appendOctet(PduPart.P_CONTENT_LOCATION); appendTextString(contentLocation); } // content final int headerLength = attachment.getLength(); int dataLength = 0; // Just for safety... final byte[] partData = part.getData(); if (partData != null) { arraycopy(partData, 0, partData.length); dataLength = partData.length; } else { InputStream cr = null; try { final 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 (final FileNotFoundException e) { return PDU_COMPOSE_CONTENT_ERROR; } catch (final IOException e) { return PDU_COMPOSE_CONTENT_ERROR; } catch (final RuntimeException e) { return PDU_COMPOSE_CONTENT_ERROR; } finally { if (cr != null) { try { cr.close(); } catch (final IOException e) { // Nothing to do } } } } 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. */ private static 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()"); } final 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() { final ByteArrayOutputStream currentMessage = mMessage; final 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() { final 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(final 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; } } }