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#!/usr/bin/perl

# scannerdrake $Id$
# Yves Duret <yduret at mandrakesoft.com>
# Copyright (C) 2001-2002 MandrakeSoft
# 
# 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, 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.

use lib qw(/usr/lib/libDrakX);

use standalone;     #- warning, standalone must be loaded very first, for 'explanations'

use interactive;
use common;
use scanner;
use handle_configs;
use services;

foreach (@ARGV) {
    /^--update-usbtable$/ and do { scanner::updateScannerDBfromUsbtable(); exit };
    /^--update-sane=(.*)$/ and do { scanner::updateScannerDBfromSane($1); exit };
    /^--manual$/ and $::Manual=1;
    /^--dynamic=(.*)$/ and do { dynamic($1); exit };
}

$in = 'interactive'->vnew('su', 'default');
if (!files_exist('/usr/bin/scanimage',
		 '/usr/bin/xsane',
		 if_(files_exist("/usr/bin/gimp"),
		     "/usr/lib/gimp/*/plug-ins/xsane"))) {
    $in->do_pkgs->install('sane-backends', 'xsane', 
			  if_($in->do_pkgs->is_installed('gimp'),
			      'xsane-gimp'));
}
if ($::Manual) { manual(); quit() }
my $wait = $in->wait_message(N("Scannerdrake"),
			     N("Searching for configured scanners ..."));
@c = scanner::configured();
$wait = $in->wait_message(N("Scannerdrake"),
			     N("Searching for new scanners ..."));
@f = scanner::detect(@c);
$wait = undef;
my $changed = 0;
(@f) and $changed = auto();
if ($changed) {
    my $wait =
	$in->wait_message(N("Scannerdrake"),
			  N("Re-generating list of configured scanners ..."));
    @c = scanner::configured();
}
mainwindow(@c);
quit();

sub removeverticalbar {
    my ($s) = @_;
    $s =~ s/\|/ /g;
    $s =~ /^\s*(\S+)\s+/;
    my $make = $1;
    my $searchmake = handle_configs::searchstr($make);
    $s =~ s/($searchmake)\s*$searchmake/$1/;
    return $s; 
}

sub auto {
    #use Data::Dumper;
    #print Dumper (@f);
    my $changed = 0;
    foreach (@f) {
	if (member($_->{val}{DESCRIPTION}, keys %$scanner::scannerDB)) {
	    my $name = $_->{val}{DESCRIPTION};
	    $name =~ s/\s$//; # some HP entries have a trailing space, i will correct usbtable asap
	    if ($scanner::scannerDB->{$name}{flags}{unsupported}) {
		$in->ask_warn('Scannerdrake', N("The %s is not supported by this version of Mandrake Linux.", removeverticalbar($name)));
		next;
	    }
	    if ($in->ask_yesorno('Scannerdrake',N("%s found on %s, configure it automatically?",removeverticalbar($name),$_->{port}),1)) {
		$changed ||= (tryConfScanner($name, $_->{port}) or 
			      manual());
	    } else {
		$changed ||= manual();
	    }
	} else {
	    $in->ask_yesorno('Scannerdrake',N("%s is not in the scanner database, configure it manually?", removeverticalbar($_->{val}{DESCRIPTION})),1) and manual();
	}
    }
    return changed;
}

sub manual {
    my $s = $in->ask_from_treelist('Scannerdrake', N("Select a scanner"), '|', [' None', keys %$scanner::scannerDB], '') or return 0;
    return 0 if $s eq ' None';
    if ($scanner::scannerDB->{$s}{flags}{unsupported}) {
	$in->ask_warn('Scannerdrake', N("The %s is not supported by this version of Mandrake Linux.", removeverticalbar($s)));
	return 0;
    }
    return tryConfScanner($s);
}

sub mainwindow {
    my @configured = @_;
    # main loop
    my $maindone;
    while (!$maindone) {
	# Generate list of configured scanners
	my $msg = do {
	    if (@configured) {
		my @scannerlist = 
		    map {
			my $entry = $_->{val}{DESCRIPTION};
			if_($entry, "  -  $entry\n");
		    } @configured;
		if (@scannerlist) {
		    my $main_msg = 
			@scannerlist > 1 ?
			N_("The following scanners\n\n%s\nare available on your system.\n") :
			N_("The following scanner\n\n%s\nis available on your system.\n");
		    sprintf($main_msg, join('', @scannerlist));
		} else {
		    N("There are no scanners found which are available on your system.\n");
		}
	    } else {
		N("There are no scanners found which are available on your system.\n");
	    }
	};
	my $buttonclicked;
	#- Show dialog
	if ($in->ask_from_
	    (
	     { 
		 title => N("Scannerdrake"),
		 messages => $msg,
		 ok => "",
		 cancel => "",
	     },
	     [
	      { val => N("Search for new scanners"),
		type => 'button',
		clicked_may_quit => sub {
		    $buttonclicked = "autoadd";
		    1;
		} },
	      { val => N("Add a scanner manually"),
		type => 'button',
		clicked_may_quit => sub {
		    $buttonclicked = "manualadd";
		    1;
		} },
	      { val => N("Scanner sharing"),
		type => 'button',
		clicked_may_quit => sub {
		    $buttonclicked = "sharing";
		    1;
		} },
	      { val => N("Quit"),
		type => 'button',
		clicked_may_quit => sub {
		    $buttonclicked = "quit";
		    1;
		} },
	      ]
	     )
	    ) {
	    my $changed = 0;
	    if ($buttonclicked eq "autoadd") {
		# Do scanner auto-detection
		my $wait =
		    $in->wait_message(N("Scannerdrake"),
				      N("Searching for configured scanners ..."));
		@configured = scanner::configured();
		$wait = 
		    $in->wait_message(N("Scannerdrake"),
				      N("Searching for new scanners ..."));
		my @f = scanner::detect(@configured);
		$wait = undef;
		if (@f) { 
		    $changed = auto();
		}
	    } elsif ($buttonclicked eq "manualadd") {
		# Show dialogs to manually add a scanner
		$changed = manual();
	    } elsif ($buttonclicked eq "sharing") {
		# Show dialog to set up scanner sharing
		$changed = sharewindow(@configured);
	    } elsif ($buttonclicked eq "quit") {
		# We have clicked "Quit"
		$maindone = 1;
	    }
	    if ($changed) {
		my $wait =
		    $in->wait_message(N("Scannerdrake"),
				      N("Re-generating list of configured scanners ..."));
		@configured = scanner::configured();
	    }
	} else {
	    # Cancel clicked
	    $maindone = 1;
	}
    }
}

sub dynamic {
    @f = scanner::detect();
    foreach (@f) { 
	if (member($_->{val}{DESCRIPTION}, keys %$scanner::scannerDB)) {
	    my $name = $_->{val}{DESCRIPTION};
	    $name =~ s/\s$//; #some HP entry have a trailing space, i will correct usbtable asap
	    if ($scanner::scannerDB->{$name}{flags}{unsupported}) {
		$in->ask_warn('Scannerdrake', N("The %s is not supported by this version of Mandrake Linux.", removeverticalbar($name)));
		next;
	    }
	    scanner::confScanner($name, $_->{port});
	} else {
	    $in->ask_warn('Scannerdrake', N("The %s is not known by this version of Scannerdrake.", removeverticalbar($name)));
	}
    }
}

sub tryConfScanner {
    # take care if interactive output is needed (unsupported, parallel..)
    my ($model, $port) = @_;
    if ($scanner::scannerDB->{$model}{flags}{unsupported}) {
	$in->ask_warn('Scannerdrake', N("The %s is unsupported", 
					removeverticalbar($model)));
	return 0;
    }
    if (($scanner::scannerDB->{$model}{ask} =~ /DEVICE/) || (!$port)){
	$port = '/dev/usb/scanner0';
	$in->ask_from('Scannerdrake',
		      N("Scannerdrake was not able to detect your %s.\nPlease select the device where your scanner is attached", removeverticalbar($model)),
		      [
		       { label => N("choose device"), 
			 val => \$port,
			 list => ['/dev/scanner', 
				  '/dev/usb/scanner0',
				  '/dev/usb/scanner1',
				  '/dev/usb/scanner2',
				  'libusb:001:001',
				  'libusb:001:002',
				  'libusb:001:003',
				  'libusb:001:004',
				  'libusb:001:005',
				  'libusb:001:006',
				  'libusb:001:007',
				  'libusb:001:008',
				  'libusb:001:009',
				  'libusb:001:010', 
				  '/dev/sg0',
				  '/dev/sg1',
				  '/dev/sg2',
				  '/dev/sg3',
				  '/dev/sg4',
				  '/dev/parport0',
				  '/dev/parport1',
				  '/dev/parport2',
				  '/dev/pt_drv'], 
			 not_edit => 0, sort => 1 },
		       ],
		      ) or return 0;
    }
    if ($scanner::scannerDB->{$model}{server} =~ /(printerdrake|hpoj)/i) {
     	$in->ask_warn('Scannerdrake', N("The %s must be configured by printerdrake.\nYou can launch printerdrake from the Mandrake Control Center in Hardware section.", removeverticalbar($model)));
     	return 0;
    }
    scanner::confScanner($model,$port);
    $in->ask_warn(N("Congratulations!"),
		  N("Your %s has been configured.\nYou may now scan documents using \"XSane\" from Multimedia/Graphics in the applications menu.", removeverticalbar($model)));
    return 1;
}

sub quit {
    $::isEmbedded ? kill('USR1', $::CCPID) : $in->exit(0);
}

sub makeexportmenues {
    my @exports = @_;
    my %menuexports = map {
	($_ eq '+' ? N("All remote machines") : $_) => $_;
    } map {
	# Remove comments and blank lines
	($_ =~ /^\s*($|\#)/ ? () : chomp_($_));
    } @exports;
    my %menuexports_inv = reverse %menuexports;
    return (\%menuexports, \%menuexports_inv);
}

sub makeimportmenues {
    my @imports = @_;
    my %menuimports = map {
	($_ eq 'localhost' ? N("This machine") : $_) => $_;
    } map {
	# Remove comments and blank lines
	($_ =~ /^\s*($|\#)/ ? () : chomp_($_));
    } @imports;
    my %menuimports_inv = reverse %menuimports;
    return (\%menuimports, \%menuimports_inv);
}

sub sharewindow {
    my @configured = @_;
    # Read list of hosts to where to export the local scanners
    my @exports = cat_("/etc/sane.d/saned.conf");
    my ($menuexports, $menuexports_inv) =
	makeexportmenues(@exports);
    # Read list of hosts from where to import scanners
    my @imports = cat_("/etc/sane.d/net.conf");
    my ($menuimports, $menuimports_inv) =
	makeimportmenues(@imports);
    # Is saned running?
    my $sanedrunning = services::starts_on_boot("saned");
    my $oldsanedrunning = $sanedrunning;
    # Is the "net" SANE backend active
    my $netbackendactive = grep(/^\s*net\s*$/,
				cat_("/etc/sane.d/dll.conf"));
    my $oldnetbackendactive = $netbackendactive;
    # Set this to 1 to tell the caller that the list of locally available
    # scanners has changed (Here if the SANE client configuration has
    # changed)
    my $changed = 0;
    my $importschanged = 0;
    # main loop
    my $maindone;
    while (!$maindone) {
	my $buttonclicked;
	#- Show dialog
	if ($in->ask_from_
	    (
	     { 
		 title => N("Scannerdrake"),
		 messages => N("Here you can choose whether the scanners connected to this machine should be accessable by remote machines and by which remote machines.") .
                     N("You can also decide here whether scanners on remote machines should be made available on this machine."),
	     },
	     [
	      { text => N("The scanners on this machine are available to other computers"), type => 'bool',
		val => \$sanedrunning },
	      { val => N("Scanner sharing to hosts: ") .
		    (keys %{$menuexports} > 0 ?
		     (keys %{$menuexports} > 2 ?
		      join(", ", (keys %{$menuexports})[0,1]) . " ..." :
		      join(", ", keys %{$menuexports})) :
		     N("No remote machines")), 
		type => 'button',
		clicked_may_quit => sub {
		    $buttonclicked = "exports";
		    1;
		},
		disabled => sub {
		    !$sanedrunning;
		} },
	      { text => N("Use scanners on remote computers"),
		type => 'bool',
		val => \$netbackendactive },
	      { val => N("Use the scanners on hosts: ") .
		    (keys %{$menuimports} > 0 ?
		     (keys %{$menuimports} > 2 ?
		      join(", ", (keys %{$menuimports})[0,1]) . " ..." :
		      join(", ", keys %{$menuimports})) :
		     N("No remote machines")), 
		type => 'button',
		clicked_may_quit => sub {
		    $buttonclicked = "imports";
		    1;
		},
		disabled => sub {
		    !$netbackendactive;
		} },
	      ]
	     )
	    ) {
	    if ($buttonclicked eq "exports") {
		# Show dialog to add hosts to share scanners to
		my $subdone = 0;
		my $choice;
		while (!$subdone) {
		    my @list = keys %{$menuexports};
		    # Entry should be edited when double-clicked
		    $buttonclicked = "edit";
		    $in->ask_from_
			(
			 { title => N("Sharing of local scanners"),
			   messages => N("These are the machines on which the locally connected scanner(s) should be available:"),
			   ok => "",
			   cancel => "",
		         },
			 # List the hosts
			 [ { val => \$choice, format => \&translate,
			     sort => 0, separator => "####",
			     tree_expanded => 1,
			     quit_if_double_click => 1,
			     allow_empty_list => 1,
			     list => \@list },
			   { val => N("Add host"), 
			     type => 'button',
			     clicked_may_quit => sub {
				 $buttonclicked = "add";
				 1; 
			     } },
			   { val => N("Edit selected host"), 
			     type => 'button',
			     clicked_may_quit => sub {
				 $buttonclicked = "edit";
				 1; 
			     },
			     disabled => sub {
				 return ($#list < 0);
			     } },
			   { val => N("Remove selected host"), 
			     type => 'button',
			     clicked_may_quit => sub {
				 $buttonclicked = "remove";
				 1; 
			     },
			     disabled => sub {
				 return ($#list < 0);
			     } },
			   { val => N("Done"), 
			     type => 'button',
			     clicked_may_quit => sub {
				 $buttonclicked = "";
				 $subdone = 1;
				 1; 
			     } },
			   ]
			 );
		    if ($buttonclicked eq "add" ||
			$buttonclicked eq "edit") {
			my ($hostchoice, $ip);
			if ($buttonclicked eq "add") {
			    # Use first entry as default for a new entry
			    $hostchoice = 
				N("Name/IP address of host:");
			} else {
			    if ($menuexports->{$choice} eq '+') {
				# Entry is "All hosts"
				$hostchoice = $choice;
			    } else {
				# Entry is a name/an IP address
				$hostchoice = 
				    N("Name/IP address of host:");
				$ip = $choice;
			    }
			}
			my @menu = (N("All remote machines"),
			            N("Name/IP address of host:"));
			# Show the dialog
			my $address;
			my $oldaddress = 
			    ($buttonclicked eq "edit" ?
			     $menuexports->{$choice} : "");
			if ($in->ask_from_
			    (
			     { title => N("Sharing of local scanners"),
			       messages => N("Choose the host on which the local scanners should be made available:"),
			       callbacks => {
				   complete => sub {
				       if ($hostchoice eq $menu[0]) {
					   $address = "+";
				       } elsif ($hostchoice eq $menu[1]) {
					   $address = $ip;
				       }
				       # Do not allow an empty address
				       if ($address !~ /\S/) {
					   $in->ask_warn(N("Scannerdrake"), 
							 N("You must enter a host name or an IP address.\n"));
					   return (1,0);
				       }
				       # Strip off leading and trailing
				       # spaces
				       $address =~ s/^\s*(.*?)\s*$/$1/;
				       # Check whether item is duplicate
				       if (($address ne $oldaddress) &&
					   (member("$address\n",
						   @exports))) {
					   $in->ask_warn(N("Scannerdrake"), 
							 N("This host is already in the list, it cannot be added again.\n"));
					   return (1,1);
				       }
				       return 0;
				   },
			       },
			   },
			     # List the host types
			     [ { val => \$hostchoice, format => \&translate,
				 type => 'list',
				 sort => 0,
				 list => \@menu },
			       { val => \$ip, 
				 disabled => sub {
				     $hostchoice ne 
					 N("Name/IP address of host:");
			         }},
			       ],
			     )) {
			    # OK was clicked, insert new item into the list
			    if ($buttonclicked eq "add") {
				handle_configs::set_directive(\@exports,
							      $address);
			    } else {
				handle_configs::replace_directive(\@exports,
								  $oldaddress,
								  $address);
			    }
			    # Refresh list of hosts
			    ($menuexports, $menuexports_inv) =
				makeexportmenues(@exports);
			    # Position the list cursor on the new/modified
			    # item
			    $choice = $menuexports_inv->{$address};
			}
		    } elsif ($buttonclicked eq "remove") {
			my $address = $menuexports->{$choice};
			handle_configs::remove_directive(\@exports,
							 $address);
			# Refresh list of hosts
			($menuexports, $menuexports_inv) =
			    makeexportmenues(@exports);
		    }
		}
	    } elsif ($buttonclicked eq "imports") {
		# Show dialog to add hosts on which the scanners should be
		# used
		my $subdone = 0;
		my $choice;
		while (!$subdone) {
		    my @list = keys %{$menuimports};
		    # Entry should be edited when double-clicked
		    $buttonclicked = "edit";
		    $in->ask_from_
			(
			 { title => N("Usage of remote scanners"),
			   messages => N("These are the machines from which the scanners should be used:"),
			   ok => "",
			   cancel => "",
		         },
			 # List the hosts
			 [ { val => \$choice, format => \&translate,
			     sort => 0, separator => "####",
			     tree_expanded => 1,
			     quit_if_double_click => 1,
			     allow_empty_list => 1,
			     list => \@list },
			   { val => N("Add host"), 
			     type => 'button',
			     clicked_may_quit => sub {
				 $buttonclicked = "add";
				 1; 
			     } },
			   { val => N("Edit selected host"), 
			     type => 'button',
			     clicked_may_quit => sub {
				 $buttonclicked = "edit";
				 1; 
			     },
			     disabled => sub {
				 return ($#list < 0);
			     } },
			   { val => N("Remove selected host"), 
			     type => 'button',
			     clicked_may_quit => sub {
				 $buttonclicked = "remove";
				 1; 
			     },
			     disabled => sub {
				 return ($#list < 0);
			     } },
			   { val => N("Done"), 
			     type => 'button',
			     clicked_may_quit => sub {
				 $buttonclicked = "";
				 $subdone = 1;
				 1; 
			     } },
			   ]
			 );
		    if ($buttonclicked eq "add" ||
			$buttonclicked eq "edit") {
			my ($hostchoice, $ip);
			if ($buttonclicked eq "add") {
			    # Use first entry as default for a new entry
			    $hostchoice = 
				N("Name/IP address of host:");
			} else {
			    if ($menuimports->{$choice} eq 'localhost') {
				# Entry is "This machine"
				$hostchoice = $choice;
			    } else {
				# Entry is a name/an IP address
				$hostchoice = 
				    N("Name/IP address of host:");
				$ip = $choice;
			    }
			}
			my @menu = (N("This machine"),
			            N("Name/IP address of host:"));
			# Show the dialog
			my $address;
			my $oldaddress = 
			    ($buttonclicked eq "edit" ?
			     $menuimports->{$choice} : "");
			if ($in->ask_from_
			    (
			     { title => N("Sharing of local scanners"),
			       messages => N("Choose the host on which the local scanners should be made available:"),
			       callbacks => {
				   complete => sub {
				       if ($hostchoice eq $menu[0]) {
					   $address = 'localhost';
				       } elsif ($hostchoice eq $menu[1]) {
					   $address = $ip;
				       }
				       # Do not allow an empty address
				       if ($address !~ /\S/) {
					   $in->ask_warn(N("Scannerdrake"), 
							 N("You must enter a host name or an IP address.\n"));
					   return (1,0);
				       }
				       # Strip off leading and trailing
				       # spaces
				       $address =~ s/^\s*(.*?)\s*$/$1/;
				       # Check whether item is duplicate
				       if (($address ne $oldaddress) &&
					   (member("$address\n",
						   @imports))) {
					   $in->ask_warn(N("Scannerdrake"), 
							 N("This host is already in the list, it cannot be added again.\n"));
					   return (1,1);
				       }
				       return 0;
				   },
			       },
			   },
			     # List the host types
			     [ { val => \$hostchoice, format => \&translate,
				 type => 'list',
				 sort => 0,
				 list => \@menu },
			       { val => \$ip, 
				 disabled => sub {
				     $hostchoice ne 
					 N("Name/IP address of host:");
			         }},
			       ],
			     )) {
			    # OK was clicked, insert new item into the list
			    if ($buttonclicked eq "add") {
				handle_configs::set_directive(\@imports,
							      $address);
			    } else {
				handle_configs::replace_directive(\@imports,
								  $oldaddress,
								  $address);
			    }
			    $importschanged = 1;
			    # Refresh list of hosts
			    ($menuimports, $menuimports_inv) =
				makeimportmenues(@imports);
			    # Position the list cursor on the new/modified
			    # item
			    $choice = $menuimports_inv->{$address};
			}
		    } elsif ($buttonclicked eq "remove") {
			my $address = $menuimports->{$choice};
			handle_configs::remove_directive(\@imports,
							 $address);
			# Refresh list of hosts
			($menuimports, $menuimports_inv) =
			    makeimportmenues(@imports);
			$importschanged = 1;
		    }
		}
	    } else {
		# We have clicked "OK"
		$maindone = 1;
		if ($importschanged) {
		    $changed = 1;
		}
		# Write /etc/sane.d/saned.conf
		output("/etc/sane.d/saned.conf", @exports);
		# Write /etc/sane.d/net.conf
		output("/etc/sane.d/net.conf", @imports);
		# Turn on/off saned
		if ($sanedrunning != $oldsanedrunning) {
		    if ($sanedrunning) {
			# Make sure saned and xinetd is installed and 
			# running
			if (!files_exist('/usr/sbin/xinetd',
					 '/usr/sbin/saned')) {
			    $in->do_pkgs->install('xinetd', 'saned');
			}
			# Start saned and make sure that it gets started on
			# every boot
			services::start_service_on_boot("saned");
			services::start_service_on_boot("xinetd");
			services::restart("xinetd");
		    } else {
			# Stop saned and make sure that it does not get
			# started when booting
			services::do_not_start_service_on_boot("saned");
			services::restart("xinetd");
		    }
		}
		# Turn on/off "net" SANE backend
		if ($netbackendactive != $oldnetbackendactive) {
		    my @dllconf = cat_("/etc/sane.d/dll.conf");
		    if ($netbackendactive) {
			handle_configs::set_directive(\@dllconf, "net");
		    } else {
			handle_configs::comment_directive(\@dllconf, "net");
		    }
		    output("/etc/sane.d/dll.conf", @dllconf);
		    $changed = 1;
		}
	    }
	} else {
	    # Cancel clicked
	    $maindone = 1;
	}
    }
    return $changed;
}