3.2.1. iWRAP Password Protection

The access to the iWRAP can be password protected. By default it's buffy, but it can be unset or changed with the setup application (see Section 2.4). The password is case sensitive. The password must be typed in as the first command after the server has replied with "READY."

3.2.2. LAN Access Profile

This profile is not automatically started at boot. The default settings can be changed with the setup application (see section Section 2.4), or runtime with the iWRAP interface (see Chapter 6).

The Access Server board can also act as a LAN Access Client, but in this case it must be controlled manually using iWRAP commands, described in Chapter 6.

3.2.3. Serial Port Profile

The Serial Port Profile is used to replace an RS-232 serial cable between two devices with a Bluetooth connection. The physical setup is shown in Figure 3-1.

State A) in the figure is the starting situation with a serial cable connecting the devices. This cable is to be replaced with a Bluetooth connection.

In state B) the long serial connection is replaced with a Bluetooth Serial Port Profile connection between the two Access Server devices. These Access Server devices are then connected locally to the user devices with (short) serial cables. The cable between user device A and Access Server device A must be a cross-over cable. The cable between user device B and Access Server device B must be similar (direct or cross-over) to the one used in state A).

If RTS/CTS handshaking is used to ensure correct data transfer, the serial cables must have these pins connected. Note: This handshaking is "local": it takes place between the user device and the Access Server board. No handshaking between user device A and user device B on the other end of the Bluetooth connection is provided.

If RTS/CTS handshaking is not used, CTS must be connected to DTR.

DCD, DTR, and DSR signals are not supported. This also means that user devices A and B will not be able to tell whether or not the Bluetooth connection is up.

When the physical setup is ready, you can create the Bluetooth connection. By default, the Serial Port Profile is started up at boot with the default settings. That is, listening in DevB mode, at 115200 bps, 8 data bits, no parity, 1 stop bit, and RTS/CTS enabled. To change these settings, use the setup application or the WWW Setup interface, as described in Section 2.4.

3.2.4. Object Push and File Transfer Profile

Access Server has two OBEX profiles: Object Push Profile (ObjP) and File Transfer Profile (FTP). You can use these profiles to transfer files easily between different Access Server devices and other devices supporting ObjP/FTP.

These profiles are handled by forwarding incoming calls to obexserver program, which handles both profiles. The working directory is /tmp/obex, and users have full read and write access there. By default, the default contact card /etc/default.vcf is copied there at boot.

In ObjP mode obexserver will prefix received files with sender's Bluetooth address and iWRAP port number.

Two simple command line utilities, obexput and obexget, are provided. They can be used to send and retrieve files to and from another Bluetooth device supporting ObjP/FTP.

Usage: obexput [parameters] bdaddr channel file(s)

Enter either of these commands without parameters to get a short help for using the command.

A non-zero return value means error. Reason for this error is printed to terminal.

3.2.5. PAN Profiles

The WRAP Access Server has support for all PAN profile modes: Personal Area Network User (PANU), Network Access Point (NAP) and Generic Networking (GN).

The device creating the PAN connection decides, which of these modes are to be used. Incoming connections are handled automatically by the Access Server. The Access Server board can also act as a PAN client, but in this case it must be controlled manually using the iWRAP interface, described in the Chapter 6.

3.2.6. Bluetooth Range Changing

The transmit power of the WRAP Access Server is configurable. By default, class 1 (100 meter range) settings are used. The settings can be changed down to "class 2" settings (10 meter range) with b2b_class2 command or even less with b2b_class3 command. The class 1 settings can be restored with b2b_class1 command.

After b2b_class# is given, it is recommended to reboot the Access Server once to restart ObexSender and other applications connected to the iWRAP server(s).

3.2.7. BTCLI - iWRAP Command Line Interface Utility

You can send commands to a iWRAP server using the btcli application.

Usage: btcli [options] command

To see the options, enter the command btcli --help.

The specified command is sent to a Access Server iWRAP server (default: first server at port 10101) and all replies are echoed to the standard output. The application waits and prints the replies for a certain amount of time (default: 10 seconds) and exits.

The iWRAP commands are described in Chapter 6.

3.2.8. serialbluetooth

It is also possible to control the first iWRAP server (at port 10101) via RS-232 with the serialbluetooth application. Note: When you want to use this application, you must first disable the Bluetooth Serial Port Profile and the WRAP SMS Gateway Server with the setup application, as described in Section 2.4.

Usage: serialbluetooth [options]

To see the options, enter the command serialbluetooth --help.

Basically, serialbluetooth takes commands from a serial port and forwards them to the iWRAP server. All the commands available via iWRAP are also available via serial port.

There are two exceptions:

1. After making an outgoing RFCOMM data call, all input from the serial port is forwarded to the data socket, not the control socket. To close the data socket, you have to write +++ with a 200ms pause before each character. There is no way to have two concurrent RFCOMM calls.

2. All incoming RFCOMM calls are answered automatically. Again, to close the data socket, write +++ as with the outgoing call.

3.2.9. Resetting Bluetooth Basebands

In case of rare failures in the Bluetooth baseband level, it is possible to give hardware reset for the basebands while the other system services are running with the following command sequence at the command line interface of WRAP Access Server:

        [root@wrap /]$ /etc/init.d/bluetooth stop
        [root@wrap /]$ echo ABCD > /dev/bbreset
        [root@wrap /]$ sleep 1
        [root@wrap /]$ echo abcd > /dev/bbreset
        [root@wrap /]$ sleep 2
        [root@wrap /]$ /etc/init.d/bluetooth start
      

3.3.1. Compact Flash GPRS Cards

The Compact Flash GPRS card is identified automatically by the operating system when inserted. The WRAP Access Server can use the GPRS card to connect to the GPRS network or to act as an SMS gateway (to send and receive SMS messages).

The GPRS mode is enabled and settings like SIM card's PIN code are configured using the setup application or its WWW interface, see Section 2.4 and documentation for Setup → Network settings → Enable GPRS interface in Appendix B.

Using the WRAP SMS Gateway Server is documented in Section 3.5.3.

If needed for special use, the Compact Flash GPRS card can also be accessed directly from /dev/ttyS0, a device file which exists when the GPRS card is successfully initialized.

3.3.2. Compact Flash GPS Card

The Compact Flash GPS card is identified automatically by the operating system when inserted. At that time, the device file /dev/ttyS0 is created and the GPS card can be accessed using that device with the serial port settings in use by the GPS card.

The supported compact flash cards are listed in Appendix D.

3.3.3. Compact Flash WiFi Cards

WRAP Access Server has support for Prism II/III based CF WiFi cards. The supported compact flash cards are listed in Appendix D.

Depending on the firmware version, two different drivers must be used. The firmware version can be seen after the insertion of the card in the system log file /var/log/messages, which can be viewed with the WWW Setup interface at Setup → Advanced settings → Show system log file.

You need to use the Hostap driver, if you can see the following line in the log:

          eth1: Looks like an Intersil firmware version 1.7.4
      

If the firmware version is below 1.7.4, you must use the Orinoco driver.

Selection of the driver and configuration is done with the setup application or its WWW interface at Setup → Network settings.

Standard set of wireless utilities are provided to fine-tune your WiFi configuration:

• iwconfig

• iwlist

• iwpriv

For more info see: http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html

3.5.1. Finder

The Finder service is a small service, which listens for UDP broadcast queries from the WRAP Access Server Finder applications and responses to those queries with identification information (IP address, model, serial number, etc.) about the Access Server.

3.5.2. ObexSender

The ObexSender application is started automatically in the WRAP Access Server. Its purpose is to receive business cards (vCards), images or other files, and analyze their content and send files back selecting them based on configured keywords found.

ObexSender can also inquiry for bluetooth devices, and automatically send one or more files to all new devices found.

3.5.3. SMS Gateway Server

The WRAP SMS Gateway server supports Nokia 20, Nokia 30 or Wavecom WMOD2 compatible GSM terminals and the supported GSM/GPRS Compact Flash cards for sending and receiving SMS messages. By default the Compact Flash card is used. The PIN code query of the SIM-card at power-up must be disabled.

The WRAP SMS Gateway Server is disabled by default. To enable it, use the setup application's WWW interface, as described in section Section 2.4. Enabling is done at Setup → Applications → Default bootup applications → smsgw.

To use Nokia terminals the device must be connected to the user serial port when the server starts up and the terminal must be configured to operate in RS-232/AT-command. The Nokia terminals are configured with the N20 or N30 Configurator application.

The WRAP SMS Gateway is configured to use the terminal connected to the user serial port with the setup application or its WWW interface by changing the setting at Setup → Applications → SMS gateway settings → Comport device to /dev/ttyAT1 from the default /dev/ttyS0.

For further information on using smsgw, see the makesms example in Section 5.3.1.

3.5.4. User Level Watchdog

The WRAP User Level Watchdog daemon listens on UDP port 4266 for "id timeout" messages. "id" is an ASCII string, without spaces. If "timeout" equals to 0 (zero), the "id" is removed from the list of processes to wait. If "timeout" is greater than 0 (zero), the "id" is added or updated.

When there is no message for "id" received within the "timeout" seconds, the user level watchdog dies and the WRAP Access Server is rebooted by the kernel watchdog.

The watchdog command can be used to send messages to the watchdog daemon. This is done via command watchdog id timeout, for example watchdog test 5.

3.5.5. Remote Management

The WRAP Access Server contains simple tools that provide base for full and secure remote management of the device.

The basic remote management can be performed using the WWW Setup interface, SSH command line access and SCP and SFTP file transfer protocols.

In addition to them, the Access Server contains the WRAP Remote Management System for transferring management packets over different medium to the Access Server and automatically sending response packets back.

The management packets (*.wpk) are processed automatically when they are transferred to the autoinstall directory in the WRAP Access Server (/tmp/obex by default, configurable with setup application or WWW interface at Setup → Applications → wpkgd settings). Easiest way to transfer a management packet to this directory is to upload it from WWW Setup at Setup → Advanced settings → Upload a software update.

          %wpkg-version: 2
          %wpkg-prepare:
          echo Hello world
        

          %wpkg-version: 2
          %wpkg-prepare:
          FOO=`pwd`
          cd /
          tar xzf ${FOO}/files.tar.gz
          echo Done.
        

          %wpkg-version: 2
          %wpkg-format:  vcf
          %wpkg-prepare:
          ipaddr() {
          echo `ifconfig nap | grep "inet addr" | awk -F [:] \
            \\{print\\$2\\} | awk \\{print\\$1\\}`
          }
          serialno() {
          echo `wrapid | grep Hardware | awk \\{print\\$5\\}`
          }
          echo -e "BEGIN:VCARD\r"
          echo -e "VERSION:2.1\r"
          echo -e "N:`serialno`\r"
          echo -e "TEL:`ipaddr`\r"
          echo -e "URL:`hostname`\r"
          echo -e "END:VCARD\r"
        

3.5.6. FTP

If you enable FTP server then users can use it to log in in anonymously to /tmp/obex directory with download access or as root with password buffy to the root directory with full access. The password and other settings can be changed on the Access Server with setup application or by editing /etc/ftpd.conf file (see Section 2.4).

3.5.7. Web Server

The integrated web server in the Access Server supports HTTP/1.0 methods GET and POST, and has light user authentication capabilities. The content can be either static or dynamic - the WWW server is CGI/1.1 compatible.

The web server is always running and the content (http://wrap-ip-address/) is located in the /var/www/html/ directory in the Access Server file system.

The web server is configured to protect the WWW Setup interface with username and password. The default username and password can be changed as instructed in Section 2.4. For further information about using the web server for your own applications, see the web examples in Section 5.3.1.

3.5.8. SNMP

A separate software update package is available from Bluegiga Techforum (https://www.bluegiga.com/techforum/), which adds the Net-SNMP suite of applications to the WRAP Access Server. Current implementation for the Access Server is limited and will be extended in the future. However, it can be used to poll the basic status of the Access Server.

Configuration details can be found and altered in the configuration file /etc/snmp/snmpd.conf accessible as described in Section 2.4.

For more information about the Net-SNMP suite, see http://net-snmp.sourceforge.net/

3.5.9. OpenVPN

A separate software update package is available from Bluegiga Techforum (https://www.bluegiga.com/techforum/), which adds the OpenVPN™, a full-featured SSL VPN solution to the WRAP Access Server.

For more information about the OpenVPN™, see http://openvpn.net/.

3.5.10. SSH

By default, users can use SSH to log in (or SCP and SFTP to transfer files) as user root with password buffy. The password can be changed on the Access Server using the command passwd or with the setup application.

3.5.11. Telnet

If you enable telnet then users can use it to log in as user root with password buffy. The password can be changed on the Access Server using the command passwd or with the setup application.