hushapplet.java

一个木马程序源码

      add(commands,commandsConstraints,backButton,0,0);
      add(commands,commandsConstraints,clearButton,1,0);
      add(commands,commandsConstraints,saveDraftButton,2,0);
      add(commands,commandsConstraints,sendButton,3,0);
      currentScreen = "compose";
      mainLayout.show(main,currentScreen);
      commands.paintAll(commands.getGraphics());
    }
 
    /* On click of the "Addresses" button
     */
    else if (y>=215 && y<=240 && x>=43 && x<=67 && !currentScreen.equals("addresses") && !lockMenu)
    { 
      if (currentScreen.equals("read")) c.wipeMessage();
      clearCommands();                 
      add(commands,commandsConstraints,newAddressButton,0,0);
      add(commands,commandsConstraints,showFingerprintButton,1,0);
      currentScreen = "addresses";
      mainLayout.show(main,currentScreen);
      commands.paintAll(commands.getGraphics());
    }

    /* On click of the "Quit" button
     */
    else if (y>=280 && y<=305 && x>=43 && x<=67 && !lockMenu) 
    { 
      lockButtons(true);
      clearCommands();
      add(commands,commandsConstraints,
        new Label("Quitting                                                                    "
                 +"                                            " ),0,0);
      commands.paintAll(commands.getGraphics());
      try 
      { 
        c.use(); 
        c.quit(); 
      } catch (IOException e1) {System.out.println("Connection closed");}
      try
      {
        URL u = new URL(exitpage+"?action=Quit&username="+c.username());
        getAppletContext().showDocument(u);
        c.wipeMessage();
        c.killPassCipher();
        removeAll();
        paintAll(getGraphics());
      } 
      catch (MalformedURLException mue) {System.out.println("Malformed URL");}
      stop();
    }
    return true;
  }  
 


  public boolean action(Event e, Object o)
  {
    /**
     *  Overrides Applet.action
     *  This method handles actions:  button clicks and text component return presses
     */

    /* Update rotateCount for ad changes
     */
    rotateCount=rotateCount+(keyStrokesPerAdRotation/clicksPerAdRotation);        

    /* The statusBar is cleared with each new action event
     */
    statusBar.removeAll();

    /*  If a passphrase has been entered init2 is called    
     */
    if ((e.target==passphraseField || e.target==passphraseButton) && passphraseField.getText().length()>0) init2();

    /* On click of the "Select All" button
     */
    else if (e.target==selectAllButton) 
    {
      /*  Action is that all items on the pages are marked as selected.
       *  In the event that all items are already selected, all items
       *  are unselected
       */

      /* If it's a selection of folders
       */
      if (currentScreen.equals("listFolders"))
      {
        if (foldersSelected()<numberOfFoldersDisplayed)
          for (int x=currentFolderPage*linesPerPage;x<currentFolderPage*linesPerPage+numberOfFoldersDisplayed;x++) selectFolder(x);
        else for (int x=currentFolderPage*linesPerPage;x<currentFolderPage*linesPerPage+numberOfFoldersDisplayed;x++) unselectFolder(x);
        showSelectFunctionButtons(foldersSelected()>0,2);
      }

      /* If it's a selection of messages
       */
      else if (currentScreen.equals("listMessages"))
      {
        if (messagesSelected()<numberOfMessagesDisplayed)
            for (int x=currentMessagePage*linesPerPage;x<currentMessagePage*linesPerPage+numberOfMessagesDisplayed;x++) selectMessage(x);
        else for (int x=currentMessagePage*linesPerPage;x<currentMessagePage*linesPerPage+numberOfMessagesDisplayed;x++) unselectMessage(x);
        showSelectFunctionButtons(messagesSelected()>0,1);
      }
    }


    /* On click of the "Clear" button wipe all fields on compose screen
     */
    else if (e.target==clearButton) 
    { 
      confirmLabel.setText("Are you sure you want to clear this message?");
      clearCommands();
      lockButtons(true);
      add(commands,commandsConstraints,confirmLabel,0,0);
      add(commands,commandsConstraints,confirmDeleteButton,1,0); 
      add(commands,commandsConstraints,cancelDeleteButton,2,0);  
      commands.paintAll(commands.getGraphics()); 
    }

    else if (e.target==showFingerprintButton)
    {
      if (smallApplet) statusBar(spaces+"Pub key fingerprint: "+c.fingerprint()+spaces); 
      else statusBar(spaces+"Public key fingerprint: "+c.fingerprint()+spaces); 
    }

    else if (e.target==saveDraftButton)
    {
      /*  Saves a copy of the message currnetly being composed
       *  in the "drafts" folder
       */ 

      String ccs="";   /* A concatenation of headerFields with "Cc:" selected   */ 
      String tos="";   /* A concatenation of headerFields with "To:" selected   */
      String bccs="";  /* A concatenation of headerFields with "Bcc:" selected  */
      String ebcc="";  

      /* Iterate through to/cc/bcc fields to create headerInfo;
       */
      for (int x=0;x<3;x++)
      {
	/* If a headerField contains an address
         */
        if (headerField[x].getText().trim().length()>0)
	{
	  /* If a headerField contains a valid address
           */
          if (validEmailAddresses(headerField[x].getText()))
          {  
	    /* Sort address info into to, cc, or bcc strings
             */
            if (fieldChoice[x].getSelectedItem().equals("To:"))
              tos=tos+headerField[x].getText().trim()+", ";              
            else if (fieldChoice[x].getSelectedItem().equals("Cc:")) 
              ccs=ccs+headerField[x].getText().trim()+", ";
            else bccs=bccs+headerField[x].getText().trim()+", ";
          }
          /* Exit if email address is invalid
           */
          else
          {
             headerField[x].requestFocus();
             return false;
          }
	}      
      }

      clearCommands();
      lockButtons(true);
      add(commands,commandsConstraints,
        new Label("Saving draft                                                    "+
                  "                                                                "),0,0);
      commands.paintAll(commands.getGraphics());

      /*  Sort message info into fields understood by
       *  message decryption method in Connection.java
       */
      if (tos.length()>0) tos="E-To: "+tos.substring(0,tos.length()-2)+"\n";
      if (ccs.length()>0) ccs="E-Cc: "+ccs.substring(0,ccs.length()-2)+"\n";
      if (bccs.length()>0) bccs="E-Bcc: "+bccs.substring(0,bccs.length()-2)+"\n";

      /* Since message encryption takes arrays of headers and 
       * recipients, info must be stored in arrays of length 1
       */      

      String[] draftHeader = new String[1];
      String[] draftRecipient = new String[1];

      draftHeader[0]="From "+c.emailAddress()+"  "
        +new Date().toString()+"\n"+cDate.getText().trim()
        +"\nSubject: "+cSubject.getText().trim()+"\nFrom: "
        +c.emailAddress()+"\n"+tos+ccs+bccs;
      draftRecipient[0]=c.username();

      try 
      {
        c.use();
        c.sendEncryptedMessage(draftRecipient,draftHeader,cBody.getText(),true,"drafts");     
        if (c.folderName().equals("drafts")) listMessages("drafts",0,true); 
        listFolders(currentFolderPage,true);
        c.done();
        clearCommands();
        add(commands,commandsConstraints,selectAllButton,0,0);
        currentScreen = "listMessages";     
        showSelectFunctionButtons(foldersSelected()>0,1);                
        mainLayout.show(main,currentScreen);
        lockButtons(false);
        cBody.setText("      ");
        compose("","","","","","");
        statusBar(spaces+"Draft saved"+spaces);
      }
      catch (IOException e0) 
      {
        clearCommands();
        lockButtons(false);
        add(commands,commandsConstraints,backButton,0,0);
        add(commands,commandsConstraints,clearButton,1,0);
        add(commands,commandsConstraints,saveDraftButton,2,0);
        add(commands,commandsConstraints,sendButton,3,0);
        currentScreen = "compose";
        mainLayout.show(main,currentScreen);
        error();
      }
    }

    /****
     *  The send routine.  This is long
     **/

    /* On click of the "Send" button send a message
     */
    else if (e.target==sendButton)
    {
      /* Sends the message currently on the compose screen
       */ 

      String headerInfo="";
      String ccs="";   /* A concatenation of headerFields with "Cc:" selected   */ 
      String tos="";   /* A concatenation of headerFields with "To:" selected   */
      String bccs="";  /* A concatenation of headerFields with "Bcc:" selected  */
      String ebcc="";  

      boolean theresAnAddress = false;

      /* Iterate through to/cc/bcc fields to create headerInfo;
       */
      for (int x=0;x<3;x++)
      {
	/* If a headerField contains an address
         */
        if (headerField[x].getText().trim().length()>0)
	{
          theresAnAddress = true;
	  /* If a headerField contains a valid address
           */
          if (validEmailAddresses(headerField[x].getText()))
          {
	    /* Sort address into to, cc, or bcc strings
             */
            if (fieldChoice[x].getSelectedItem().equals("To:"))
               tos=tos+headerField[x].getText().trim()+", ";              
            else if (fieldChoice[x].getSelectedItem().equals("Cc:")) 
               ccs=ccs+headerField[x].getText().trim()+", ";
            else bccs=bccs+headerField[x].getText().trim()+", ";
          }
          /* Exit if email address is invalid
           */
	  else
	  {
            headerField[x].requestFocus();
            return false;
          }
	}      
      }
      
      if (!theresAnAddress)
      {
        statusBar(spaces+"You must enter an address"+spaces);
        return false;
      }

      try 
      { 

        boolean wasSent=false;
        clearCommands();
        lockButtons(true);

        /*  If message should be encrypted 
         */
        if (encryptCheckbox.getState()) 
        {
          add(commands,commandsConstraints,
              new Label("Encrypting and sending message                             "
                       +"                                                           "),0,0);
          commands.paintAll(commands.getGraphics());

	  /*  Save recipient information in "E-" headers so it can be parsed out later.
           *  This is necessary because each recipient must receive a differently
           *  encrypted copy of the message. 
           */
          if (tos.length()>0) tos="E-To: "+tos.substring(0,tos.length()-2)+"\n";
          if (ccs.length()>0) ccs="E-Cc: "+ccs.substring(0,ccs.length()-2)+"\n";
          if (bccs.length()>0) bccs="E-Bcc: "+bccs.substring(0,bccs.length()-2)+"\n";

          /*  Use vectors to store recipient and header info
           *  This is important because each recipient will
           *  receive the same message with different 
           *  header info.  See Connection.sendEncryptedMessage
           */
          Vector recipientsVector=new Vector();
          Vector headersVector=new Vector();
       
          String thisField="";
          String thisAddress="";
          int lastComma;
          boolean inQuotes;

          /*  Parse individual recipients out of header fields 
           *  and store appropriate info in vectores
           */
          for (int y=0;y<3;y++)
	  {
            lastComma=-1;
            inQuotes=false;
            thisField = headerField[y].getText();          
            for (int x=0;x<thisField.length();x++)
            {
              if (thisField.regionMatches(x,"\"",0,1)) inQuotes=!inQuotes;
              else if (!inQuotes&&thisField.regionMatches(x,",",0,1)||x==thisField.length()-1)
              {
                if (x==thisField.length()-1) thisAddress=thisField.substring(lastComma+1,x+1).trim();
                else thisAddress=thisField.substring(lastComma+1,x).trim();
                ebcc="";
                if (bccs.length()>0) if (bccs.indexOf(thisAddress)!=-1) ebcc="E-Bcc: "+thisAddress+"\n"; 
                headersVector.addElement(cDate.getText().trim()+"\nSubject: "+cSubject.getText().trim()
                  +"\nFrom: "+c.emailAddress()+"\nTo: "+thisAddress+"\n"+tos+ccs+ebcc);

                if (thisAddress.lastIndexOf('<') > thisAddress.lastIndexOf('"'))
                  thisAddress=thisAddress.substring(thisAddress.lastIndexOf('<')+1,thisAddress.lastIndexOf('>'));
                if (thisAddress.lastIndexOf('@')!=-1) 
                  thisAddress=thisAddress.substring(0,thisAddress.lastIndexOf('@'));          

                thisAddress = thisAddress.toLowerCase();
                recipientsVector.addElement(thisAddress);
                lastComma=x;
              }
            }
          }
          if (ccToSelfCheckbox.getState())
	  {
            headersVector.addElement("From "+c.emailAddress()+"  "+new Date().toString()
              +"\n"+cDate.getText().trim()+"\nSubject: "+cSubject.getText().trim()+"\nFrom: "
              +c.emailAddress()+"\nTo: "+c.emailAddress()+"\n"+tos+ccs+ebcc);
	    recipientsVector.addElement("/self/");
          }
          String[] recipientsArray = new String[recipientsVector.size()];
          recipientsVector.copyInto(recipientsArray);
          String[] headersArray = new String[headersVector.size()];
          headersVector.copyInto(headersArray);
          c.use();
          wasSent = c.sendEncryptedMessage(recipientsArray,headersArray,cBody.getText(),false,"sent");
        }

        /* If message should be sent plain text
         */
        else  
        {
          add(commands,commandsConstraints,
            new Label("Sending unencrypted message                              "),0,0);
          commands.paintAll(commands.getGraphics());
          if (tos.length()>0) tos="To: "+tos.substring(0,tos.length()-2)+"\n";
          if (ccs.length()>0) ccs="Cc: "+ccs.substring(0,ccs.length()-2)+"\n";
          if (bccs.length()>0) bccs="Bcc: "+bccs.substring(0,bccs.length()-2)+"\n";
          c.use();   
          c.sendPlainMessage(cDate.getText().trim()+"\nSubject: "+cSubject.getText().trim()
            +"\nFrom: "+c.emailAddress()+"\n"+tos+ccs+bccs,cBody.getText(),ccToSelfCheckbox.getState());