From 82d4e2586623f74d70bfdd84093cddff510f8536 Mon Sep 17 00:00:00 2001
From: Reinhold Kainhofer <reinhold@kainhofer.com>
Date: Wed, 7 Dec 2011 17:07:16 +0100
Subject: [PATCH] Implement config and wifi networks scanning, print them and
ask for AP
---
hp2101nw_setup.pl | 297 +++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 268 insertions(+), 29 deletions(-)
diff --git a/hp2101nw_setup.pl b/hp2101nw_setup.pl
index 4b964c1..16a3a8c 100755
--- a/hp2101nw_setup.pl
+++ b/hp2101nw_setup.pl
@@ -7,18 +7,17 @@ use strict;
use warnings;
my $debug=1;
+# my $debug=0;
+our $VERSION=0.01;
+print "hp2101nw_setup.pl - version $VERSION\n";
+print "Linux configuration utility for the HP 2101nw wireless G USB print server.\n\n";
+print "(C) 2011 Reinhold Kainhofer <reinhold\@kainhofer.com>\n";
+print "License: GPL v2 or later\n\n";
-=head1 NAME
-
-hp2101nw_setup.pl - Configure the HP 2101nw wireless G USB print server
-
-=head1 VERSION
-
-Version 0.01
-=cut
-our $VERSION=0.01;
+our $thisboxname = "XXXXXXXX";
+$| = 1;
=head1 SYNOPSIS
@@ -34,39 +33,51 @@ http://wiki.kainhofer.com/hardware/hp2101nw_wlan_printserver
=cut
-print "hp2101nw_setup.pl - version $VERSION\n";
-print "Linux configuration utility for the HP 2101nw wireless G USB print server.\n\n";
-print "(C) 2011 Reinhold Kainhofer <reinhold\@kainhofer.com>\n";
-print "License: GPL v2 or later\n\n";
-
$Data::Dumper::Indent = 1; ## no critic(ProhibitPackageVars)
# data structure: VendorID, ProductID, BULK_IN_EP, BULK_OUT_EP
my @supported_devices=(
[0x03f0, 0xcd02]
);
+my $var_names = {};
+sub progress {
+# my $str = shift;
+ printf (@_);
+}
+sub debug {
+ if ($debug) {
+ printf (@_);
+ }
+}
+sub trim($) {
+ my $string = shift;
+ $string =~ s/^\s+//;
+ $string =~ s/\s+$//;
+ return $string;
+}
sub device_detect () {
my $usb = Device::USB->new();
my $dev;
- print "Detected devices:\n";
+ progress "Detected devices:\n";
foreach (@supported_devices) {
$dev = $usb->find_device( @$_ );
if ($dev) {
- printf "\t%s / ID %04x:%04x (%s: %s)\n", $dev->filename(),
+ progress ("\t%s / ID %04x:%04x (%s: %s)\n", $dev->filename(),
$dev->idVendor(), $dev->idProduct(),
- $dev->manufacturer(), $dev->product();
+ $dev->manufacturer(), $dev->product());
}
}
if ($dev) {
- printf "\nUsing device: %04x:%04x (%s: %s)\n\n",
- $dev->idVendor(), $dev->idProduct(),
- $dev->manufacturer(), $dev->product();
+ progress "\n";
+ debug ("Using device: %04x:%04x (%s: %s)\n\n",
+ $dev->idVendor(), $dev->idProduct(),
+ $dev->manufacturer(), $dev->product() );
} else {
- print "\tNONE\n\n";
+ progress "\tNONE\n\n";
print "ERROR: No supported device was found...\n\n";
print "Please connect your HP wireless USB print server to \n";
print "the computer with the black USB cable (micro USB plug) \n";
@@ -101,26 +112,213 @@ sub device_open ($) {
}
-
-sub request_device_config ($) {
+sub write_bulk_data ($$$) {
my $dev = shift;
- my $request = "@\0\x06\0XXXXXXXX9100:\n";
+ my $data = shift;
+ my $len = shift;
+ # Add the header (12 bytes): @, \0, packet length, boxname (XXXXXXXX)
+ my $request = sprintf ("@\0%s%s%s", pack ("v", $len), $thisboxname, $data);
if ($debug) { print "Request: ", $request, "\n"; }
- my $res = $dev->bulk_write (1, $request, 18, 1000);
+ my $res = $dev->bulk_write (1, $request, 18, 500);
if ($res<0) {
printf "ERROR write bulk data (%d): %s\n", $res, $!;
}
- $res = $dev->bulk_read (2, my $result="", 25600, 1000);
+ return $res;
+}
+
+# Read bulk data, maybe in loops until there is nothing left to read?
+sub read_bulk_data ($$$) {
+ my $dev = shift;
+ my $len = $_[1];
+ my $readdata = "";
+ my $res = $dev->bulk_read (2, $readdata, $len+13, 500);
if ($res<0) {
printf "ERROR reading bulk data (%d): %s\n", $res, $!;
}
- if ($debug) { printf "read %d bytes: \n%s\n\n", $res, $result; }
- return $result;
+ debug ("read %d bytes: \n%s\n\n", $res, $readdata);
+ # Check and cut off the header after some sanity checks:
+ if (substr ($readdata, 0, 3) ne "\@\0\0") {
+ printf "ERROR reading data: Wrong header %s\n", substr ($readdata, 0, 3);
+ }
+ my $datalen = unpack ("v", substr ($readdata, 3, 2));
+ $res = $res-13;
+ if ($datalen != $res) {
+ printf "ERROR reading data: Expected %d bytes of data, got %d\n", $datalen, $res;
+ }
+ my $boxname = substr ($readdata, 5, 8);
+ # FIXME: Check the name of the box...
+
+ # cut off the header:
+ $_[0]=substr ($readdata, 13);
+ return $res;
+}
+
+sub security2string {
+ my $sec = shift;
+ if ($sec == 0) {
+ return "None";
+ } elsif ($sec == 1) {
+ return "WEP";
+ } elsif ($sec == 2) {
+ return "WPA-PSK";
+ } elsif ($sec == 4) {
+ return "WPA2-PSK"; # WPA2-PSK TKIP
+ } elsif ($sec == 6) {
+ return "WPA/WPA2-PSK"; # WPA/WPA2 and WPA2-PSK CCMP
+ } elsif ($sec == 7) {
+ return "WPA-EAP";
+ } elsif ($sec == 8) {
+ return "WPA2-EAP";
+ } else {
+ return sprintf ("Unknown (%d)", $sec);
+ }
+}
+
+sub val {
+ my $config = shift;
+ my $var = shift;
+ foreach my $e (@$config) {
+ if ($e->[0] eq $var) {
+ return $e->[2];
+ }
+ }
+ return undef;
+}
+
+sub print_current_configuration ($) {
+ my $config = shift;
+ print "Current configuration of the device:\n";
+ printf "\tDevice name: %s\n", val($config, '0001');
+ if (val($config,'0012') ne "Enable") {
+ printf "\tTCP/IP not yet configured and/or enabled.\n\n";
+ return;
+ }
+ printf "\tSSID: %s\n", val($config,'7000');
+ printf "\tSecurity: %s\n", security2string (val($config,'7003'));
+ printf "\tChannel: %s\n", val($config,'7002');
+
+ my $dhcp = (val($config,'4020') eq "Enable");
+ printf "\tIPv4 method: %s\n", $dhcp?"DHCP":"manual";
+ my $associated = val($config,'7014') =~ m/STATE:Associated/;
+ if ($associated || !$dhcp) {
+ printf "\tIP address: %s\n", val($config,'4000');
+ printf "\tGateway: %s\n", val($config,'4001');
+ printf "\tNetmask: %s\n", val($config,'4002');
+ }
+ if ($associated) {
+ printf "\tLink state: %s\n", val($config,'7014');
+ } else {
+ # Not connected
+ printf "\tWireless not connected\n";
+ }
+ # TODO: Print ad-hoc network setting if configured/enabled
+ print "\n\n";
+}
+
+
+sub request_device_config ($) {
+ my $dev = shift;
+ my $cfg = "";
+ progress "Reading current configuration...\n";
+ my $res = write_bulk_data ($dev, "9100:\n", 6);
+ $res = read_bulk_data ($dev, $cfg, 25600);
+ return $cfg;
}
sub parse_device_config ($) {
my $cfg = shift;
+ my @entries = split ('\n', $cfg);
+ my @config = ();
+ foreach (@entries) {
+ my $key = substr ($_, 0, 4);
+ (my $name, my $value) = split (/:/, substr ($_, 5), 2);
+ push (@config, [$key, $name, $value]);
+# print "key: ", $key, ", name: ", $name, ", value: ", $value, "\n";
+ }
+ return @config;
+}
+# Convert a list of the form [ ["OPTIONID", "OPTIONNAME", "VALUE], ...]
+# into a string to be sent to the device
+sub create_config ($) {
+ my $cfg = shift;
+ my $result = "";
+ foreach my $o (@$cfg) {
+ $result .= sprintf ("%s %s:%s\n", $o->[0], $o->[1], $o->[2]);
+ }
+ return $result;
+}
+
+sub parse_survey_data ($) {
+ my $survey = shift;
+ my $networks = {};
+ my @entries = split ("\x0b", $survey);
+ foreach (@entries) {
+ (my $ssid, my $settings) = split ("\x0c", $_);
+ my @settings = split (",", $settings);
+ $networks->{$ssid} = {
+ 'mac' => $settings[0],
+ 'channel' => $settings[1],
+ 'wifi_ver' => $settings[2],
+ 'secmode' => $settings[3],
+ 'signal' => $settings[4],
+ 'adhoc' => $settings[5]
+ };
+# "SSID: ", $ssid, "settings: ", @settings, "\n";
+# print "entry: |", $_, "|\n";
+ }
+ debug Dumper ($networks);
+ return $networks;
+}
+
+sub scan_for_aps ($) {
+ my $dev = shift;
+ progress "Scanning for access points: ";
+ my $loop = 0;
+ my $found;
+ my $survey;
+ while (!defined($found) && $loop <= 4) {
+ ++$loop;
+ debug ("loop=", $loop, "\n");
+ my $res = write_bulk_data ($dev, "9107:\n", 6);
+ $res = read_bulk_data ($dev, my $d="", 0);
+ foreach (1, 2, 3, 4, 5) {
+ sleep(1);
+ progress ".";
+ }
+ my $cfg = "";
+ $res = write_bulk_data ($dev, "9100:\n", 6);
+ $res = read_bulk_data ($dev, $cfg, 25600);
+ my @config = parse_device_config ($cfg);
+ $survey = val(\@config, '7021');
+ $found = (defined ($survey) && length ($survey) > 0);
+ }
+ progress "\n";
+ if ($found) {
+# progress "Found wireless networks: \n", $survey;
+ } else {
+ print "ERROR: No wireless networks detected.\n";
+ }
+ return parse_survey_data ($survey);
+}
+
+sub print_wireless_networks {
+ my $aps = shift;
+ print "Detected wireless networks:\n";
+# print Dumper ($aps);
+ my $format = " %3s %-25s%-9s%-13s%-17s%-8s\n";
+ printf $format, " ", "SSID", "Signal", "Security", "Type", "channel";
+ print "\t------------------------------------------------------------------------\n";
+ my $i = 0;
+ foreach my $ssid (sort {lc $a cmp lc $b} keys (%$aps)) {
+ ++$i;
+ my $network = $aps->{$ssid};
+ printf $format, $i.")", $ssid, $network->{'signal'},
+ security2string ($network->{'secmode'}),
+ $network->{'adhoc'}?"Ad-Hoc":"Infrastructure",
+ $network->{'channel'};
+ }
+ print "\n";
}
@@ -131,12 +329,53 @@ sub device_close ($) {
$dev->reset;
}
+sub ask_change {
+ my $exit = "";
+ until ($exit =~ /^[yn]/i ) {
+ print "Do you want to change these settings? (y,n) ";
+ chomp($exit = <STDIN>);
+ $exit = trim($exit);
+ }
+ return ($exit =~ /^y/i);
+}
+sub ask_ap {
+ my $aps = shift;
+ my @ssids = (sort {lc $a cmp lc $b} keys (%$aps));
+ my $newssid;
+ print "Please enter the number or the SSID of the desired wireless network.\n";
+ print "Enter '0', 'hidden' or 'h' to connect to a hidden network.\n";
+ do {
+ print "Desired wireless network: ";
+ chomp($newssid = <STDIN>);
+ $newssid = trim ($newssid);
+ return $newssid if (exists $aps->{$newssid});
+ if ($newssid =~ /^[1-9]\d*$/ && ($newssid <= scalar(@ssids))) {
+ return $ssids[$newssid-1];
+ }
+ if ($newssid eq "0" || $newssid eq "h" || $newssid eq "hidden") {
+ $newssid = "";
+ while (length($newssid) < 1) {
+ print "Please enter the SSID: ";
+ chomp ($newssid = <STDIN>);
+ }
+ return $newssid;
+ }
+ } while 1; # We'll jump out of the loop via return!
+}
my $dev = device_detect ();
if ($dev) {
device_open ($dev);
my $cfg = request_device_config ($dev);
- my $cfg_array = parse_device_config ($cfg);
+ my @config = parse_device_config ($cfg);
+ print_current_configuration (\@config);
+ # TODO: Ask whether configuration shall be changed
+ exit unless (ask_change ());
+ my $aps = scan_for_aps ($dev);
+ print_wireless_networks ($aps);
+ my $newap = ask_ap ($aps);
+ debug ("\tNew wireless network: |%s|\n", $newap);
+
device_close ($dev);
}
--
GitLab