NAME

EAFDSS - Electronic Fiscal Signature Devices Library

SYNOPSIS

use EAFDSS; 

my($dh) = new EAFDSS(
                "DRIVER" => $driver . "::" . $params,
                "SN"     => $serial,
                "DIR"    => $sDir,
                "DEBUG"  => $verbal
        );

if (! $dh) {
        print("ERROR: " . EAFDSS->error() ."\n");
        exit -1;
}

$result = $dh->Status();
$result = $dh->Sign($fname);
$result = $dh->Info();
$result = $dh->SetTime($time);
$result = $dh->GetTime();
$result = $dh->SetHeaders($headers);
$result = $dh->GetHeaders();

if ($result) {
        printf("%s\n", $result);
        exit(0);
} else {
        my($errNo)  = $dh->error();
        my($errMsg) = $dh->errMessage($errNo);
        printf(STDERR "ERROR [0x%02X]: %s\n", $errNo, $errMsg);
        exit($errNo);
}

DESCRIPTION

The EAFDSS module handles the communication with an Electronic Signature Device (EAFDSS). It defines a set of methods common to all EAFDSS devices in order to communicate with the device but also handle all necessary file housekeeping requirements by Law, like creating A, B, C files.

ARCHITECTURE of an EAFDSS Application

This module is loosely (and shamelessly I may add) influenced by the architecture of the DBI module. There is a layer of a basic API that is common to all EAFDSS device drivers. Usually a developer of an EAFDSS application will only need to deal with functions only at that level. You have to be in need of something really special to access functions that are specific to a certain driver.

|<-------- EAFDSS A/B type solution ------->|
|<- Your work ->| |<--- Scope of EAFDSS --->| |<-- hardware -->|
                       .-.   .-------------.   .---------------.
.--------------.       | |---| SDSP Driver |---| EAFDSS Device |
|              |       |E|   `-------------'   `---------------'
| Perl script  |  |A|  |A|   .-------------.   .---------------.
| using EAFDSS |--|P|--|F|---| SDNP Driver |---| EAFDSS Device |
| API methods  |  |I|  |D|   `-------------'   `---------------'
|              |       |S|...
`--------------'       |S|... Other drivers
                       | |...
                       `-'

Methods

First of all you have to initialize the driver handle through the EAFDSS constructor.

init, new

Returns a newly created $dh driver handle. The DRIVER argument is a combination of a driver and it's parameters. For instance it could be one of the following:

EAFDSS::SDNP::127.0.0.1

EAFDSS::Dummy:/tmp/dummy.eafdss

Driver EAFDSS::SDSP::/dev/ttyS0

The SN argument is the Serial number of device we want to connect. Each device has it's own unique serial number. If the device's SN does not much with the provided then you will get an error.

The DIR argument is the directory were the signature files (A, B and C) will be created. Make sure the directory exist.

The last argument is the DEBUG. Use a true value in order to get additional information. This one is only useful to developers of the module itself.

my($dh) = new EAFDSS(
                "DRIVER" => $driver . "::" . $params,
                "SN"     => $serial,
                "DIR"    => $sDir,
                "DEBUG"  => $verbal
        );
        
if (! $dh) {
        print("ERROR: " . EAFDSS->error() ."\n");
        exit -1;
}

Following are the common methods to all the device drivers.

EAFDSS->available_drivers

Returns an array containing the names of drivers currently installed/supported.

my(@drivers) = EAFDSS->available_drivers();

$dh->Sign($filename)

This the main method that will be used most of the time in a typical fiscal day. The aim of that method is to feed the contents of the file provided by the $filename parameter to the EAFDSS device and return to the user the signature string.

my($result) = $dh->Sign($fname);
if ($result) {
        printf("%s\n", $result);
        exit(0);
} else {
        my($errNo)  = $dh->error();
        my($errMsg) = $dh->errMessage($errNo);
        printf(STDERR "ERROR [0x%02X]: %s\n", $errNo, $errMsg);
        exit($errNo);
}

$dh->Report

The second most used function is Z report issuing function. At the end of the day ask for the device to close the fiscal day by issuing the Z report. It will return the signature of the day.

my($result) = $dh->Report();
if ($result) {
	printf("%s\n", $result);
	exit(0);
} else {
	my($errNo)  = $dh->error();
	my($errMsg) = $dh->errMessage($errNo);
	printf(STDERR "ERROR [0x%02X]: %s\n", $errNo, $errMsg);
	exit($errNo);
}

$dh->Info

This method will return information about the name of the device and version of it's firmware.

my($result) = $dh->Info();
if ($result) {
        printf("%s\n", $result);
        exit(0);
} else {
        my($errNo)  = $dh->error();
        my($errMsg) = $dh->errMessage($errNo);
        printf(STDERR "ERROR [0x%02X]: %s\n", $errNo, $errMsg);
        exit($errNo);
}

$dh->Status

This function return a single line containing the values of the following: serial number, the index of the last Z, the total signatures, the daily signatures, the last signature's data size, remaining signatures until the device will force a Z.

my($result) = $dh->Status();
if ( defined $result && ($result == 0)) {
        printf("%s\n", $result);
        exit(0);
} else {
        my($errNo)  = $dh->error();
        my($errMsg) = $dh->errMessage($errNo);
        printf(STDERR "ERROR [0x%02X]: %s\n", $errNo, $errMsg);
        exit($errNo);
}

$dh->SetTime

Use this method to set the date/time on the device. Provide the date/time in the "DD/MM/YY HH:MM:SS" format.

my($result) = $dh->SetTime($time);
if ( defined $result && ($result == 0)) {
        printf("Time successfully set\n");
        exit(0);
} else {
        my($errNo)  = $dh->error();
        my($errMsg) = $dh->errMessage($errNo);
        printf(STDERR "ERROR [0x%02X]: %s\n", $errNo, $errMsg);
        exit($errNo);
}

$dh->GetTime

This method will return the time of the device in the "DD/MM/YY HH:MM:SS" format

my($result) = $dh->GetTime();
if ($result) {
        printf("%s\n", $result);
        exit(0);
} else {
        my($errNo)  = $dh->error();
        my($errMsg) = $dh->errMessage($errNo);
        printf(STDERR "ERROR [0x%02X]: %s\n", $errNo, $errMsg);
        exit($errNo);
}

$dh->SetHeaders

Use this method to set the headers on the device. Provide the headers in the following format:

Style1/Line1/Style2/Line2/Style3/Line3/Style4/Line4/Style5/Line5/Style6/Line6

my($result) = $dh->SetHeaders($headers);
if ( defined $result && ($result == 0)) {
        printf("Headers successfully set\n");
        exit(0);
} else {
        my($errNo)  = $dh->error();
        my($errMsg) = $dh->errMessage($errNo);
        printf(STDERR "ERROR [0x%02X]: %s\n", $errNo, $errMsg);
        exit($errNo);
}

$dh->GetHeaders

Use this method to get the printing headers of the device. The returned array contains 6 couples of values. One for the type of the printing line, and one for the actual printing message.

  my(@headersArray) = $dh->GetHeaders();
  if (@headersArray) {
          my($i);
          for ($i=0; $i < 12; $i+=2) {
                  if ($headersArray[$i] ne '') {
                          printf("[Line %d] [Type:%d] --> %s\n", 
				$i/2+1, $headersArray[$i], $headersArray[$i+1]);
                  }
          }
          exit(0);
  } else { 
          my($errNo)  = $dh->error();
          my($errMsg) = $dh->errMessage($errNo);
          printf(STDERR "ERROR [0x%02X]: %s\n", $errNo, $errMsg);
          exit($errNo);
  }

ERROR Codes

0x00: No errors - success

0x01: Wrong number of fields
0x02: Field too long
0x03: Field too small
0x04: Field fixed size mismatch
0x05: Field range or type check failed
0x06: Bad request code
0x09: Printing type bad
0x0A: Cannot execute with day open
0x0B: RTC programming requires jumper
0x0C: RTC date or time invalid
0x0D: No records in fiscal period
0x0E: Device is busy in another task
0x0F: No more header records allowed
0x10: Cannot execute with block open
0x11: Block not open
0x12: Bad data stream
0x13: Bad signature field
0x14: Z closure time limit
0x15: Z closure not found
0x16: Z closure record bad
0x17: User browsing in progress
0x18: Signature daily limit reached
0x19: Printer paper end detected
0x1A: Printer is offline
0x1B: Fiscal unit is offline
0x1C: Fatal hardware error
0x1D: Fiscal unit is full
0x1E: No data passed for signature
0x1F: Signature does not exist
0x20: Battery fault detected
0x21: Recovery in progress
0x22: Recovery only after CMOS reset
0x23: Real-Time Clock needs programming
0x24: Z closure date warning
0x25: Bad character in stream
0x01: Device not accessible

0x41: Device not accessible
0x42: No such file
0x43: Device Sync Failed
0x44: Bad Serial Number
0x45: Query found no devices
0x50: File contains invalid characters

EXAMPLES

Take a look at the examples directory of the distribution for a complete command line utility (OpenEAFDSS.pl) using the library.

SUPPORT / WARRANTY

The EAFDSS is free Open Source software. IT COMES WITHOUT WARRANTY OF ANY KIND.

VERSION

This is version 0.70. This version is beta. Suitable for developers wishing to be ready when the software will go stable.

AUTHOR

Hasiotis Nikos, <hasiotis@gmail.com>

COPYRIGHT AND LICENSE

This library is free software; you can redistribute it and/or modify it under the terms of the LGPL or the same terms as Perl itself, either Perl version 5.8.8 or, at your option, any later version of Perl 5 you may have available.

To install EAFDSS, copy and paste the appropriate command in to your terminal.

cpanm

cpanm EAFDSS

CPAN shell

perl -MCPAN -e shell
install EAFDSS

For more information on module installation, please visit the detailed CPAN module installation guide.

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