mmdecoder.java

nokia彩信发送api和实例

/*
 * @(#)MMDecoder.java	1.1 build
 *
 * Copyright (c) Nokia Corporation 2002
 *
 */

package com.nokia.mms;

import java.util.Date;
import java.util.Hashtable;
import java.util.Enumeration;

/**
 * The MMDecoder class decodes an array of bytes representing a Multimedia Message (MM)
 * according with the specification.
 * The class can be used to obtain a MMMessage object from which you can access
 * to each field and content of the MM.
 *
 */

public class MMDecoder implements IMMConstants {

  static final boolean FLAG_DEBUG=false;
  private MMMessage m_Message = null;
  private int m_i=0;
  private boolean m_bMultipartRelated = false;
  private boolean m_bMessageAvailable = false;
  private boolean m_bHeaderDecoded = false;
  private byte[] m_In;


  // ------------------------------------------------------------- BASIC RULES
  private long readMultipleByteInt(int length) {
    long value=0L;
    int start=m_i;
    int end=m_i+length-1;

    for (int ii=end, weight=1; ii>=start; ii--, weight*=256) {
      int bv=unsignedByte(m_In[ii]);
      value =value + bv*weight;
    }

    m_i=end+1;

    return value;
  }

  private String readTextString() {
    String value="";

    if (m_In[m_i]==0x22) {
      // in this case it's a "Quoted-string"
       m_i++;
    }

    while (m_In[m_i]>0) {
      value=value+(char)m_In[m_i++];
    }

    m_i++;

    return value;
  }

  private int readUintvar() {
    int value=0;
    int bv=unsignedByte(m_In[m_i]);

    if (bv<0x80) {
      value=bv;
      m_i++;
    } else { // In this case the format is "Variable Length Unsigned Integer"
      boolean flag=true;
      short count=0, inc=0;

      // Count the number of byte needed for the number
      while (flag) {
	flag=(m_In[m_i+count]&0x80)==0x80;
	count++;
      }

      inc=count;
      count--;

      int weight=1;
      while (count>=0) {
	bv=decodeByte(m_In[m_i+count])*weight;
        weight*=128;
        value=value+bv;
	count--;
      }

       m_i+=inc;
    }

    return value;
  }

  private int readValueLength() {
    int length=0;
    int temp = m_In[m_i++];

    if (temp < 31) {
      length=temp;
    } else
    if (temp == 31) {
      length = readUintvar();
    }

    return length;
  }


  private String readWellKnownMedia() {
    String value="";
    switch (decodeByte(m_In[m_i])) {

      case 0x00: value= "*/*"; break;
      case 0x01: value= "text/*"; break;
      case 0x02: value= "text/html"; break;
      case 0x03: value= "text/plain"; break;
      case 0x04: value= "text/x-hdml"; break;
      case 0x05: value= "text/x-ttml"; break;
      case 0x06: value= "text/x-vCalendar"; break;
      case 0x07: value= "text/x-vCard"; break;
      case 0x08: value= "text/vnd.wap.wml"; break;
      case 0x09: value= "text/vnd.wap.wmlscript"; break;
      case 0x0A: value= "text/vnd.wap.channel"; break;
      case 0x0B: value= "multipart/*"; break;
      case 0x0C: value= "multipart/mixed"; break;
      case 0x0D: value= "multipart/form-data"; break;
      case 0x0E: value= "multipart/byteranges"; break;
      case 0x0F: value= "multipart/alternative"; break;
      case 0x10: value= "application/*"; break;
      case 0x11: value= "application/java-vm"; break;
      case 0x12: value= "application/x-www-form-urlencoded"; break;
      case 0x13: value= "application/x-hdmlc"; break;
      case 0x14: value= "application/vnd.wap.wmlc"; break;
      case 0x15: value= "application/vnd.wap.wmlscriptc"; break;
      case 0x16: value= "application/vnd.wap.channelc"; break;
      case 0x17: value= "application/vnd.wap.uaprof"; break;
      case 0x18: value= "application/vnd.wap.wtls-ca-certificate"; break;
      case 0x19: value= "application/vnd.wap.wtls-user-certificate"; break;
      case 0x1A: value= "application/x-x509-ca-cert"; break;
      case 0x1B: value= "application/x-x509-user-cert"; break;
      case 0x1C: value= "image/*"; break;
      case 0x1D: value= "image/gif"; break;
      case 0x1E: value= "image/jpeg"; break;
      case 0x1F: value= "image/tiff"; break;
      case 0x20: value= "image/png"; break;
      case 0x21: value= "image/vnd.wap.wbmp"; break;
      case 0x22: value= "application/vnd.wap.multipart.*"; break;
      case 0x23: value= "application/vnd.wap.multipart.mixed"; break;
      case 0x24: value= "application/vnd.wap.multipart.form-data"; break;
      case 0x25: value= "application/vnd.wap.multipart.byteranges"; break;
      case 0x26: value= "application/vnd.wap.multipart.alternative"; break;
      case 0x27: value= "application/xml"; break;
      case 0x28: value= "text/xml"; break;
      case 0x29: value= "application/vnd.wap.wbxml"; break;
      case 0x2A: value= "application/x-x968-cross-cert"; break;
      case 0x2B: value= "application/x-x968-ca-cert"; break;
      case 0x2C: value= "application/x-x968-user-cert"; break;
      case 0x2D: value= "text/vnd.wap.si"; break;
      case 0x2E: value= "application/vnd.wap.sic"; break;
      case 0x2F: value= "text/vnd.wap.sl"; break;
      case 0x30: value= "application/vnd.wap.slc"; break;
      case 0x31: value= "text/vnd.wap.co"; break;
      case 0x32: value= "application/vnd.wap.coc"; break;
      case 0x33: value= "application/vnd.wap.multipart.related";
               m_bMultipartRelated = true;
               break;
      case 0x34: value= "application/vnd.wap.sia"; break;
      case 0x35: value= "text/vnd.wap.connectivity-xml"; break;
      case 0x36: value= "application/vnd.wap.connectivity-wbxml"; break;

    }

    m_i++;

    return value;
  }


  // ------------------------------------------------------- MMS Header Encoding

  private String readContentTypeValue() {
    int bv=unsignedByte(m_In[m_i]);
    String value="";

    if (bv>=0x80) { /* Constrained-media - Short Integer*/
      // Short-integer: the assigned number of the well-known encoding is
      // small enough to fit into Short-integer
      value=readWellKnownMedia();
    }
    else /* Constrained-media - Extension-media*/
    if (bv >= 0x20 && bv < 0x80) {
      value = readTextString();
    }
    else /* Content-general-form */
    if (bv < 0x20) {
      int valueLength = readValueLength();
      bv=unsignedByte(m_In[m_i]);
      if (bv>=0x80) { //Well-known-media
	int i2=m_i;
        value=readWellKnownMedia();
        if (value.equals("application/vnd.wap.multipart.related")) {
          bv=decodeByte(m_In[m_i]);
          if (bv==WKPA_TYPE) { // Type of the multipart/related
            m_i++;
            m_Message.setMultipartRelatedType( readTextString() );
            bv=decodeByte(m_In[m_i]);
            if (bv==WKPA_START) { // Start (it is the pointer to the presentetion part)
              m_i++;
	      m_Message.setPresentationId( readTextString() );
            }
          }
        }

	m_i=i2+valueLength;
      } else {
	int i2=m_i;
        value=readTextString();
	m_i=i2+valueLength;
      }
    }
    return(value);
  }

  // ------------------------------------------------------------------ MMS Body
  private void readMMBodyMultiPartRelated() {
    int n=0;
    int c_headerLen=0,c_dataLen=0;
    String c_type="",c_id="";
    byte [] c_buf;
    int nEntries = m_In[m_i++];

    while (n<nEntries) {
      c_headerLen=readUintvar();
      c_dataLen=readUintvar();
      int freeze_i=m_i;
      c_type=readContentTypeValue();
      int c_typeLen=m_i-freeze_i;

      c_id="A"+n;
      if (c_headerLen-c_typeLen>0) {
        if ((decodeByte(m_In[m_i])==HFN_CONTENT_LOCATION) ||
           (decodeByte(m_In[m_i])==HFN_CONTENT_ID) ) {
            m_i++;
	    c_id=readTextString();
        }
      }

      MMContent mmc=new MMContent();
      mmc.setType(c_type);
      mmc.setContentId(c_id);
      mmc.setContent(m_In,m_i,c_dataLen);
      m_Message.addContent(mmc);
      m_i+=c_dataLen;

      n++;
    }
  }

  private void readMMBodyMultiPartMixed() {
    int n=0;
    int c_headerLen=0,c_dataLen=0;
    String c_type="",c_id="";
    byte [] c_buf;
    int nEntries = m_In[m_i++];

    while (n<nEntries) {
      c_headerLen=readUintvar();
      c_dataLen=readUintvar();
      c_type=readContentTypeValue();
      c_id="A"+n;
      if (unsignedByte(m_In[m_i])==0x8E) {
	m_i++;
        c_id=readTextString();