<![CDATA[
iButtonSpyServlet.java
/*
* Copyright (c) 1998-2005 Servertec. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* THIS NOTICE MUST NOT BE ALTERED NOR REMOVED.
*
* CopyrightVersion 1.0
*/
import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletOutputStream;
import javax.servlet.ServletException;
import javax.servlet.ServletConfig;
import com.dalsemi.onewire.adapter.TINIInternalAdapter;
import com.dalsemi.onewire.adapter.TINIExternalAdapter;
import com.dalsemi.onewire.adapter.DSPortAdapter;
import com.dalsemi.onewire.utils.CRC8;
public final class iButtonSpyServlet extends BaseSampleServlet
{
private static final int DS1920 = 0x10;
private static final int DS1921 = 0x21;
private static final int DS1954 = 0x16;
private static final int DS1963 = 0x1A;
private static final int DS1971 = 0x14;
private static final int DS1973 = 0x23;
private static final int DS1981 = 0x11;
private static final int DS1982 = 0x09;
private static final int DS1983 = 0x13;
private static final int DS1985 = 0x0B;
private static final int DS1986 = 0x0F;
private static final int DS1990A = 0x01;
private static final int DS1991 = 0x02;
private static final int DS1992 = 0x08;
private static final int DS1993 = 0x06;
private static final int DS1994 = 0x04;
private static final int DS1995 = 0x0A;
private static final int DS1996 = 0x0C;
private static final int DS2502 = (0x89 & 0xFF);
private static final byte CONVERT_TEMPERATURE = (byte)0x44;
private static final byte MATCH_ROM = (byte)0x55;
private static final byte READ_STATUS = (byte)0xAA;
private static final byte READ_SCRATCHPAD = (byte)0xBE;
private static final byte READ_MEMORY_CRC = (byte)0xC3;
private static final int LONG_DELAY = 750;
private static final int SHORT_DELAY = 100;
private static final int RETRIES = 10;
private static final String[] family_names =
{
/* 0 */ "Unknown",
/* 1 0x10 */ "DS1920 Temperature iButton 16 Bits EEPROM",
/* 2 0x21 */ "DS1921 Thermochron iButton 4096 Bits NV RAM",
/* 3 0x16 */ "DS1954 Crypto iButton Secure coprocessor with 6K Bytes RAM and 32K Bytes ROM",
/* 4 0x1A */ "DS1963 Monetary iButton 4096 Bits VB RAM",
/* 5 0x14 */ "DS1971 EEPROM iButton 256+64 Bits EEPROM",
/* 6 0x23 */ "DS1973 EEPROM iButton 4096 Bits EEPROM",
/* 7 0x11 */ "DS1981 Add-only iButton 512 Bits EPROM",
/* 8 0x09 */ "DS1982 Add-only iButton 1024 Bits EPROM",
/* 9 0x13 */ "DS1983 Add-only iButton 4096 Bits EPROM",
/* 10 0x0B */ "DS1985 Add-only iButton 16,384 Bits EPROM",
/* 11 0x0F */ "DS1986 Add-only iButton 65,536 Bits EPROM",
/* 12 0x01 */ "DS1990A Serial Number iButton",
/* 13 0x02 */ "DS1991 Multikey iButton 3*384 Bits NV RAM",
/* 14 0x08 */ "DS1992 Memory iButton 1024 Bits NV RAM",
/* 15 0x06 */ "DS1993 Memory iButton 4096 Bits NV RAM",
/* 16 0x04 */ "DS1994 Memory iButton + Time 4096 Bits NV RAM",
/* 17 0x0A */ "DS1995 Memory iButton 16,384 Bits NV RAM",
/* 18 0x0C */ "DS1996 Memory iButton 65,536 Bits NV RAM",
/* 19 0x89 */ "DS2502 Add-only iButton 1024 Bits EPROM"
};
private static int[] family_ids = new int[0xFF];
public final void init(ServletConfig _config) throws ServletException
{
super.init(_config);
int length = family_ids.length;
for(int i = 0 ; i < length ; i++)
{
family_ids[i] = 0;
}
family_ids[DS1920] = 1;
family_ids[DS1921] = 2;
family_ids[DS1954] = 3;
family_ids[DS1963] = 4;
family_ids[DS1971] = 5;
family_ids[DS1973] = 6;
family_ids[DS1981] = 7;
family_ids[DS1982] = 8;
family_ids[DS1983] = 9;
family_ids[DS1985] = 10;
family_ids[DS1986] = 11;
family_ids[DS1990A] = 12;
family_ids[DS1991] = 13;
family_ids[DS1992] = 14;
family_ids[DS1993] = 15;
family_ids[DS1994] = 16;
family_ids[DS1995] = 17;
family_ids[DS1996] = 18;
family_ids[DS2502] = 19;
}
public final void service(HttpServletRequest _request, HttpServletResponse _response) throws ServletException, IOException
{
output_page("iButton Spy Servlet", _request, _response);
}
public final void output_body(ServletOutputStream out, HttpServletRequest _request, HttpServletResponse _response) throws ServletException, IOException
{
try
{
dump_ibuttons(out);
}
catch(Exception ex)
{
throw new ServletException(ex);
}
}
private final void dump_ibuttons(ServletOutputStream out) throws Exception
{
dump_ibuttons(out, "Internal", new TINIInternalAdapter());
dump_ibuttons(out, "External", new TINIExternalAdapter());
}
private final void dump_ibuttons(ServletOutputStream out, String name, DSPortAdapter adapter) throws Exception
{
out.print("<p><b>");
out.print(name);
out.print(" iButtons</b><br>");
int count = 0;
if(adapter.reset() == 1)
{
if(adapter.findFirstDevice())
{
do
{
if(count > 0)
{
out.print("<p>");
}
count++;
dump_ibutton(out, adapter);
}
while(adapter.findNextDevice());
out.print("<p>");
}
}
out.print(count);
if(count == 1)
{
out.print(" device found.");
}
else
{
out.print(" devices found.");
}
}
private final void dump_ibutton(ServletOutputStream out, DSPortAdapter adapter) throws Exception
{
byte[] rom_id = new byte[8];
adapter.getAddress(rom_id);
StringBuffer sb = new StringBuffer();
output_NVPair(out, "ROM ID", toHexString(sb, rom_id, rom_id.length - 1, 0));
output_NVPair(out, "CRC", toHexString(sb, rom_id[rom_id.length - 1]));
output_NVPair(out, "Unique Serial Number", toHexString(sb, rom_id, rom_id.length - 2, 1));
byte family_id = rom_id[0];
int ifamily_id = rom_id[0] & 0xFF;
output_NVPair(out, "Device Family", toHexString(sb, family_id));
output_NVPair(out, "Description", family_names[family_ids[ifamily_id]]);
if(ifamily_id == DS1920)
{
dump_DS1920(out, adapter, rom_id);
}
else if(ifamily_id == DS2502)
{
dump_DS2502(out, adapter, rom_id);
}
}
private final static void delay(long ms)
{
try
{
Thread.sleep(ms);
}
catch(InterruptedException ex) { }
}
private final static void dump_DS1920(ServletOutputStream out, DSPortAdapter adapter, byte[] rom_id) throws Exception
{
adapter.select(rom_id);
adapter.putByte(CONVERT_TEMPERATURE);
delay(LONG_DELAY);
adapter.select(rom_id);
adapter.putByte(READ_SCRATCHPAD);
byte[] scratchpad = new byte[10];
int length = scratchpad.length;
for(int i = 0; i < length; i++)
{
scratchpad[i] = (byte)0xFF;
}
adapter.dataBlock(scratchpad, 0, scratchpad.length);
StringBuffer sb = new StringBuffer();
output_NVPair(out, "Scratchpad", toHexString(sb, scratchpad, scratchpad.length - 1, 0));
if(((scratchpad[1] & 0x0ff) != 0x00) && ((scratchpad[1] & 0x0ff) != 0xFF))
{
throw new Exception("Invalid temperature data!");
}
short temp = (short) ((scratchpad[0] & 0x0ff) | (scratchpad[1] << 8));
temp = (short) (temp >> 1);
double temperature = ( double ) temp;
double cr = (scratchpad [6] & 0x0ff);
double cpc = (scratchpad [7] & 0x0ff);
double tempC = temperature - ( double ) 0.25 + (cpc - cr) / cpc;
double tempF = (1.8D * temperature) + 32D;
sb.setLength(0);
sb.append(tempF);
sb.append("°F (");
sb.append(tempC);
sb.append("°C)");
output_NVPair(out, "Temperature", sb.toString());
adapter.reset();
}
private final static void dump_DS2502(ServletOutputStream out, DSPortAdapter adapter, byte[] rom_id) throws Exception
{
byte[] data;
StringBuffer sb = new StringBuffer();
for(int page = 0; page < 4; page++)
{
data = readDS2502Page(adapter, rom_id, page);
output_NVPair(out, "Page" + page, toHexString(sb, data, data.length - 1, 0));
}
data = readDS2502Page(adapter, rom_id, 0);
output_NVPair(out, "Project ID", toHexString(sb, data, 4, 1));
output_NVPair(out, "Ethernet Address", toHexString(sb, data, 10, 5));
data = readDS2502Page(adapter, rom_id, -1);
output_NVPair(out, "Status", toHexString(sb, data, data.length - 1, 0));
output_NVPair(out, "CRC", toHexString(sb, data[data.length - 1]));
}
public final static byte[] readDS2502Page(DSPortAdapter adapter, byte[] rom_id, int page) throws Exception
{
int address;
byte[] data_block;
byte command;
if(page == -1)
{
address = 0;
data_block = new byte[9];
command = READ_STATUS;
}
else
{
address = page << 5;
data_block = new byte[33];
command = READ_MEMORY_CRC;
}
int length = data_block.length;
for(int i = 0; i < length; i++)
{
data_block[i] = (byte)0xFF;
}
byte[] command_block = new byte[4];
command_block[0] = command;
command_block[1] = (byte)(address & 0xFF);
command_block[2] = (byte)((address >> 8) & 0xFF);
command_block[3] = (byte)0xFF;
adapter.select(rom_id);
adapter.dataBlock(command_block, 0, command_block.length);
StringBuffer sb = new StringBuffer();
int crc = CRC8.compute(command_block, 0);
if(crc != 0)
{
adapter.reset();
throw new Exception("Invalid CRC: " + toHexString(sb, (byte)crc));
}
adapter.dataBlock(data_block, 0, data_block.length);
crc = CRC8.compute(data_block, 0);
if(crc != 0)
{
adapter.reset();
throw new Exception("Invalid CRC: " + toHexString(sb, (byte)crc));
}
adapter.reset();
return data_block;
}
private final static void output_NVPair(ServletOutputStream out, String key, String value) throws IOException
{
out.print(key);
out.print(" = [");
out.print(value);
out.print("]<br>");
}
private final static String toHexString(StringBuffer sb, byte value)
{
sb.setLength(0);
if(value >= 0 && value < 0x10)
{
sb.append('0');
}
sb.append(Integer.toHexString(value & 0xff).toUpperCase());
return sb.toString();
}
private final static String toHexString(StringBuffer sb, byte[] values, int first, int last)
{
sb.setLength(0);
int inc;
int length = last - first;
sb.ensureCapacity(length * 3);
if(first > last)
{
inc = -1;
length = 1 - length;
}
else
{
inc = 1;
length++;
}
byte value;
for(int i = first; (first <= i && i <= last) || (last <= i && i <= first); i += inc)
{
if(values[i] >= 0 && values[i] < 0x10)
{
sb.append('0');
}
sb.append(Integer.toHexString(values[i] & 0xff).toUpperCase());
sb.append(' ');
}
sb.setLength(sb.length() - 1);
return sb.toString();
}
}
==================================================
BaseSampleServlet.java
/*
* Copyright (c) 1998-2005 Servertec. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* THIS NOTICE MUST NOT BE ALTERED NOR REMOVED.
*
* CopyrightVersion 1.0
*/
import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletOutputStream;
import javax.servlet.ServletException;
public abstract class BaseSampleServlet extends HttpServlet
{
public String title;
public abstract void output_body(ServletOutputStream out, HttpServletRequest _request, HttpServletResponse _response) throws ServletException, IOException;
public void output_page(String title, HttpServletRequest _request, HttpServletResponse _response) throws ServletException, IOException
{
_response.setContentType("text/html");
ServletOutputStream out = _response.getOutputStream();
out.print("<html><head><title>");
out.print(title);
out.print("</title></head><body>");
out.print("<h1>");
out.print(title);
out.print("</h1>");
out.print("<hr>");
output_body(out, _request, _response);
out.print("</body></html>");
out.close();
}
public static void output_table_element_header(ServletOutputStream out, String key) throws IOException
{
out.print("<tr valign=top><td width=30%><b>");
out.print(key);
out.print(":</b></td><td><lit>");
}
public static void output_table_element_footer(ServletOutputStream out) throws IOException
{
out.print("</lit></td></tr>");
}
public static void output_table_element(ServletOutputStream out, String key, String value) throws IOException
{
output_table_element_header(out, key);
out.print((value==null) ? "" : value);
output_table_element_footer(out);
}
}
]]></plaintext></body>