469 lines
14 KiB
Perl
Executable file
469 lines
14 KiB
Perl
Executable file
#!/usr/bin/perl
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#
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# web interface of the CryptoBox
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#
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###############################################
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use strict;
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use CGI;
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use ClearSilver;
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use ConfigFile;
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my ($pagedata, $pagename);
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my ($LANGUAGE_DIR, $LANGUAGE, $TEMPLATE_DIR, $DOC_DIR);
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my ($CB_SCRIPT, $LOG_FILE, $IS_DEV);
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my $config = ConfigFile::read_config_file('/etc/cryptobox/cryptobox.conf');
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$CB_SCRIPT = $config->{CB_SCRIPT};
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$LOG_FILE = $config->{LOG_FILE};
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$LANGUAGE_DIR = $config->{LANGUAGE_DIR};
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$LANGUAGE = $config->{LANGUAGE};
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$TEMPLATE_DIR = $config->{TEMPLATE_DIR};
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$DOC_DIR = $config->{DOC_DIR};
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$IS_DEV = ( -e $config->{DEV_FEATURES_SCRIPT});
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#################### subs ######################
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sub load_hdf()
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{
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my $hdf = ClearSilver::HDF->new();
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my $fname = "$TEMPLATE_DIR/main.cs";
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die ("Template directory is invalid ($fname not found)!") unless (-e "$fname");
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$hdf->setValue("TemplateDir","$TEMPLATE_DIR");
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die ("Documentation directory ($DOC_DIR) not found!") unless (-d "$DOC_DIR");
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$hdf->setValue("DocDir","$DOC_DIR");
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# if it was requested as directory index (link from index.html), we should
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# set a real script name - otherwise links with a query string will break
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$hdf->setValue("ScriptName", ($ENV{'SCRIPT_NAME'} eq '/')? '/cryptobox' : $ENV{'SCRIPT_NAME'});
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&load_language_data($hdf, $LANGUAGE);
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&get_available_languages($hdf);
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return $hdf;
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}
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sub load_language_data()
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# import the specified language data
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# every call overrides previously loaded values
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# it is sufficient to call it somewhere before "render"
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{
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my $data = shift;
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my $lang = shift;
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my $fname = "$LANGUAGE_DIR/$lang" . '.hdf';
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die ("Language file ($fname) not found!") unless (-e "$fname");
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$data->readFile("$fname");
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}
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sub get_available_languages()
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# import the names of all available languages
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{
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my $data = shift;
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my ($file, @files, $hdf, $lang_name);
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opendir(DIR, $LANGUAGE_DIR) or die ("Language directory ($LANGUAGE_DIR) not accessible!");
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@files = grep { /.*\.hdf$/ } readdir(DIR);
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close(DIR);
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foreach $file (@files) {
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$hdf = ClearSilver::HDF->new();
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$hdf->readFile("$LANGUAGE_DIR/$file");
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substr($file, -4) = "";
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$lang_name = $hdf->getValue("Lang.Name", "$file");
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$data->setValue("Data.Languages." . "$file", "$lang_name");
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}
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}
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sub log_msg()
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{
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my $text = shift;
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# TODO: improve or remove!
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system("echo $text >>$LOG_FILE");
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}
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sub check_ssl
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{
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# BEWARE: dirty trick - is there a better way?
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# stunnel is not in transparent mode -> that means, it replaces REMOTE_ADDR with
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# its own IP (localhost, of course)
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return ($ENV{'REMOTE_ADDR'} eq '127.0.0.1');
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}
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sub check_mounted
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{
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return (system("$CB_SCRIPT","is_crypto_mounted") == 0);
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}
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sub check_config
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{
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return (system("$CB_SCRIPT","is_config_mounted") == 0);
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}
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sub check_init_running
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{
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return (system("$CB_SCRIPT","is_init_running") == 0);
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}
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sub is_harddisk_available
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{
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return (system("$CB_SCRIPT","is_harddisk_available") == 0);
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}
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sub get_current_ip
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# the IP of eth0 - not the configured value of the box (only for validation)
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{
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return `$CB_SCRIPT get_current_ip`;
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}
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sub render()
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{
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$pagedata->setValue("PageName","$pagename");
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my $pagefile = "$TEMPLATE_DIR/main.cs";
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print "Content-Type: text/html\n\n";
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my $cs = ClearSilver::CS->new($pagedata);
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$cs->parseFile($pagefile);
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print $cs->render();
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}
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sub mount_vol
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{
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my $pw = shift;
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if (&check_mounted) {
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$pagedata->setValue('Data.Warning', 'Das Dateisystem war bereits aktiv!');
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return 0;
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}
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# TODO: the output is always empty?
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my $output = open(PW_INPUT, "| $CB_SCRIPT crypto-mount");
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print PW_INPUT $pw;
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close(PW_INPUT);
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$pagedata->setValue('Data.ProgOutput',"$output") if ($output);
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}
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sub umount_vol
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{
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unless (&check_mounted) {
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$pagedata->setValue('Data.Warning', 'Das Dateisystem war bereits inaktiv!');
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return 0;
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}
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# TODO: check if "system" returns output
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my $output = `$CB_SCRIPT crypto-umount`;
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$pagedata->setValue('Data.ProgOutput',"$output") if ($output);
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}
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sub box_init
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{
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# TODO: redirect output to pagedata
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my $pw = shift;
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# partitioning, config and initial cryptsetup
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open(PW_INPUT, "|$CB_SCRIPT box-init-fg");
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print PW_INPUT $pw;
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close(PW_INPUT);
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# wipe and mkfs takes some time - it will be done in background
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system("echo $CB_SCRIPT box-init-bg | at now + 1 minutes >>$LOG_FILE 2>&1");
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}
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sub system_poweroff()
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{
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&umount_vol();
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system("{sleep 5; /sbin/poweroff; } </dev/null &>/dev/null &");
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}
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sub system_reboot()
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{
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&umount_vol();
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system("{sleep 5; /sbin/reboot; } </dev/null &>/dev/null &");
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}
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sub validate_ip()
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{
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my $ip = shift;
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my @octets = split /\./, $ip;
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return 0 if ($#octets == 4);
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# check for values and non-digits
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return 0 if ((@octets[0] <= 0) || (@octets[0] >= 255) || (@octets[0] =~ /\D/));
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return 0 if ((@octets[1] < 0) || (@octets[1] >= 255) || (@octets[1] =~ /\D/));
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return 0 if ((@octets[2] < 0) || (@octets[2] >= 255) || (@octets[2] =~ /\D/));
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return 0 if ((@octets[3] <= 0) || (@octets[3] >= 255) || (@octets[3] =~ /\D/));
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return 1;
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}
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sub validate_timeout()
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{
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my $timeout = shift;
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return 0 if ($timeout =~ /\D/);
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return 1;
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}
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sub validate_language()
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{
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my $language = shift;
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# check for non-alphanumeric character
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return 0 if ($language =~ /\W/);
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return 0 if ( ! -e "$LANGUAGE_DIR/$language" . '.hdf');
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return 1;
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}
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################### main #########################
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my $query = new CGI;
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$pagedata = load_hdf();
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#TODO: check result of actions and set Data.Error for failures
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# first: check for ssl!
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if ( ! &check_ssl()) {
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$pagedata->setValue('Data.Error', 'NoSSL');
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$pagedata->setValue('Data.Redirect.URL', "https://" . $ENV{'HTTP_HOST'} . $ENV{'SCRIPT_NAME'});
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$pagedata->setValue('Data.Redirect.Delay', "3");
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} elsif ( ! &is_harddisk_available()) {
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$pagedata->setValue('Data.Error', 'NoHardDisk');
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} elsif ($query->param) {
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my $action = $query->param('action');
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################ umount_do #######################
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if ($action eq 'umount_do') {
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if ( ! &check_config()) {
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$pagedata->setValue('Data.Warning', 'NotConfigured');
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$pagedata->setValue('Data.Action', 'init_form');
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} elsif (&check_init_running()) {
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$pagedata->setValue('Data.Warning', 'InitNotFinished');
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$pagedata->setValue('Data.Action', 'mount_form');
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} elsif ( ! &check_mounted()) {
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$pagedata->setValue('Data.Warning', 'NotMounted');
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$pagedata->setValue('Data.Action', 'mount_form');
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} else {
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# unmounten
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&umount_vol();
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if (&check_mounted()) {
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$pagedata->setValue('Data.Warning', 'UmountFailed');
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$pagedata->setValue('Data.Action', 'umount_form');
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}
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$pagedata->setValue('Data.Success', 'UmountDone');
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$pagedata->setValue('Data.Action', 'mount_form');
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}
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################ mount_do ########################
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} elsif ($action eq 'mount_do') {
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# mount requested
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if ( ! &check_config()) {
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$pagedata->setValue('Data.Warning', 'NotConfigured');
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$pagedata->setValue('Data.Action', 'init_form');
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} elsif (&check_init_running()) {
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$pagedata->setValue('Data.Warning', 'InitNotFinished');
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$pagedata->setValue('Data.Action', 'mount_form');
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} elsif (&check_mounted()) {
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$pagedata->setValue('Data.Warning', 'IsMounted');
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$pagedata->setValue('Data.Action', 'umount_form');
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} elsif ($query->param('password') eq '') {
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# leeres Passwort
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$pagedata->setValue('Data.Warning', 'EmptyPassword');
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$pagedata->setValue('Data.Action', 'mount_form');
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} else {
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# mounten
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&mount_vol($query->param('password'));
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if (!&check_mounted()) {
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$pagedata->setValue('Data.Warning', 'MountFailed');
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$pagedata->setValue('Data.Action', 'mount_form');
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} else {
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$pagedata->setValue('Data.Success', 'MountDone');
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$pagedata->setValue('Data.Action', 'umount_form');
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}
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}
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################## mount_ask #######################
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} elsif ($action eq 'mount_ask') {
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if ( ! &check_config()) {
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$pagedata->setValue('Data.Warning', 'NotConfigured');
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$pagedata->setValue('Data.Action', 'init_form');
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} elsif (&check_init_running()) {
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$pagedata->setValue('Data.Warning', 'InitNotFinished');
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$pagedata->setValue('Data.Action', 'mount_form');
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} elsif (&check_mounted()) {
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$pagedata->setValue('Data.Warning', 'IsMounted');
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$pagedata->setValue('Data.Action', 'intro');
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} else {
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$pagedata->setValue('Data.Action', 'mount_form');
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}
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################# umount_ask ########################
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} elsif ($action eq 'umount_ask') {
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if ( ! &check_config()) {
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$pagedata->setValue('Data.Warning', 'NotConfigured');
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$pagedata->setValue('Data.Action', 'init_form');
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} elsif ( ! &check_mounted()) {
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$pagedata->setValue('Data.Warning', 'NotMounted');
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$pagedata->setValue('Data.Action', 'mount_form');
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} else {
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$pagedata->setValue('Data.Action', 'umount_form');
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}
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################## init_ask #########################
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} elsif ($action eq 'init_ask') {
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if (&check_init_running()) {
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$pagedata->setValue('Data.Warning', 'InitNotFinished');
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$pagedata->setValue('Data.Action', 'intro');
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} elsif (&check_config()) {
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$pagedata->setValue('Data.Warning', 'AlreadyConfigured');
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$pagedata->setValue('Data.Action', 'init_form');
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} else {
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$pagedata->setValue('Data.Action', 'init_form');
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}
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#################### init_do ########################
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} elsif ($action eq 'init_do') {
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if ($query->param('password') ne $query->param('password2')) {
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# different passwords
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$pagedata->setValue('Data.Warning', 'DifferentPasswords');
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$pagedata->setValue('Data.Action', 'init_form');
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} elsif ($query->param('password') eq '') {
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# empty password
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$pagedata->setValue('Data.Warning', 'EmptyPassword');
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$pagedata->setValue('Data.Action', 'init_form');
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} elsif ($query->param('confirm') ne $pagedata->getValue('Lang.Text.ConfirmInit','')) {
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# wrong confirm string
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$pagedata->setValue('Data.Warning', 'InitNotConfirmed');
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$pagedata->setValue('Data.Action', 'init_form');
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} else {
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# do init
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&box_init($query->param('password'));
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if (!&check_init_running()) {
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$pagedata->setValue('Data.Error', 'InitFailed');
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} else {
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$pagedata->setValue('Data.Success', 'InitRunning');
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$pagedata->setValue('Data.Action', 'config_form');
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}
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}
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#################### config_ask ######################
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} elsif ($action eq 'config_ask') {
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if ( ! &check_config()) {
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$pagedata->setValue('Data.Warning', 'NotConfigured');
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$pagedata->setValue('Data.Action', 'init_form');
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} else {
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$pagedata->setValue('Data.Action', 'config_form');
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}
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#################### set_lang ########################
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# this action is called by the language links in the upper left of the web interface
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} elsif ($action eq 'set_lang') {
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# TODO: ugly problem: can't save the setting, as long as the box is unconfigured
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my $language = $query->param('language');
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if (&validate_language($language)) {
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system("$CB_SCRIPT", "set_config", "language", "$language");
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&load_language_data($pagedata, $language);
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} else {
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$pagedata->setValue('Data.Warning', 'InvalidLanguage');
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}
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$pagedata->setValue('Data.Action', 'intro');
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#################### config_do #######################
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} elsif ($action eq 'config_do') {
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if ( ! &check_config()) {
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$pagedata->setValue('Data.Warning', 'NotConfigured');
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$pagedata->setValue('Data.Action', 'init_form');
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} else {
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if ( ! &validate_language($query->param('language'))) {
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$pagedata->setValue('Data.Warning', 'InvalidLanguage');
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$pagedata->setValue('Data.Action', 'config_form');
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} elsif ( ! &validate_ip($query->param('ip'))) {
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$pagedata->setValue('Data.Warning', 'InvalidIP');
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$pagedata->setValue('Data.Action', 'config_form');
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} elsif ( ! &validate_timeout($query->param('timeout'))) {
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$pagedata->setValue('Data.Warning', 'InvalidTimeOut');
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$pagedata->setValue('Data.Action', 'config_form');
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} else {
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system("$CB_SCRIPT", "set_config", "language", $query->param('language'));
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system("$CB_SCRIPT", "set_config", "timeout", $query->param('timeout'));
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system("$CB_SCRIPT", "set_config", "ip", $query->param('ip'));
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# TODO: check for success by comparing with new config and report success
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$pagedata->setValue('Data.Success', 'ConfigSaved');
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$pagedata->setValue('Data.Action', 'intro');
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}
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}
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#################### show_log ########################
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} elsif ($action eq 'show_log') {
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$pagedata->setValue('Data.Action', 'show_log');
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##################### doc ############################
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} elsif ($action eq 'doc') {
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if ($query->param('page')) {
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$pagedata->setValue('Data.Doc.Page', $query->param('page'));
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$pagedata->setValue('Data.Action', 'doc');
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} else {
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$pagedata->setValue('Data.Doc.Page', 'CryptoBox.html');
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$pagedata->setValue('Data.Action', 'doc');
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}
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##################### pweroff #######################
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} elsif ($action eq 'shutdown_ask') {
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$pagedata->setValue('Data.Action', 'shutdown_form');
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##################### reboot ######################
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} elsif ($action eq 'shutdown_do') {
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if ($query->param('type') eq 'reboot') {
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&system_reboot();
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$pagedata->setValue('Data.Success', 'ReBoot');
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} else {
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&system_poweroff();
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$pagedata->setValue('Data.Success', 'PowerOff');
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}
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$pagedata->setValue('Data.Action', 'intro');
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################### unknown #########################
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} else {
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$pagedata->setValue('Data.Error', 'UnknownAction');
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}
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###################### default ##########################
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} else {
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$pagedata->setValue('Data.Action', 'intro');
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}
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# check state of the cryptobox
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$pagedata->setValue('Data.Status.Config', &check_config() ? 1 : 0);
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$pagedata->setValue('Data.Status.InitRunning', &check_init_running() ? 1 : 0);
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$pagedata->setValue('Data.Status.Mounted', &check_mounted() ? 1 : 0);
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my $output = &get_current_ip();
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$pagedata->setValue('Data.Status.IP', "$output");
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$output = `$CB_SCRIPT diskinfo 2>&1 | sed 's/^/<br>/'`;
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$pagedata->setValue('Data.PartitionInfo',"$output");
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# preset config settings for clearsilver
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$pagedata->setValue('Data.Config.IP', `$CB_SCRIPT get_config ip`);
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$pagedata->setValue('Data.Config.TimeOut', `$CB_SCRIPT get_config timeout`);
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$pagedata->setValue('Data.Config.Language', `$CB_SCRIPT get_config language`);
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# read log - TODO: use perl filtering
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$output = (-e "$LOG_FILE") ? `cat '$LOG_FILE' | sed 's/^/<br>/'` : '';
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$pagedata->setValue('Data.Log',"$output");
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$pagedata->setValue('Data.Status.DevelopmentMode', 1) if ($IS_DEV);
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&render();
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exit 0;
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