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[distdns.git] / server.cgi

diff --git a/server.cgi b/server.cgi
index 67b522efb7ebd8c8ae7aeed18ce433409ab04a53..1adcf0933b6ee9d71425fcd7cf503292e7a7de2a 100755 (executable)
--- a/server.cgi
+++ b/server.cgi
@@ -28,13 +28,13 @@ use File::Spec::Functions qw(catfile rel2abs);
 use FindBin qw($Bin);
 use JSON qw(decode_json encode_json);
 
-my $VERSION = '0.05';
+my $VERSION = '0.06';
 
 my $conf_file = catfile($Bin, 'server.conf');
 
 my $query = CGI->new;
 
-my @params = qw(netz pc name debug init session);
+my @params = qw(netz pc name debug init list session);
 my %params;
 
 foreach my $param (@params) {
@@ -51,12 +51,18 @@ if ($params{debug}) {
     };
 }
 
+my @missing_params = grep { not defined $params{$_} && length $params{$_} } @params;
+if (@missing_params) {
+    my $missing_params = join ', ', map "'$_'", @missing_params;
+    die "Incomplete query: param(s) $missing_params missing or not defined\n";
+}
+
 my $config = Config::Tiny->new;
    $config = Config::Tiny->read($conf_file);
 
 my $section = 'path';
 
-die "Section $section missing in $conf_file\n" unless exists $config->{$section};
+die "Section '$section' missing in $conf_file\n" unless exists $config->{$section};
 
 my @options = qw(json_file session_file);
 
@@ -64,7 +70,7 @@ my %options;
 @options{@options} = @{$config->{$section}}{@options};
 
 foreach my $option (@options) {
-    die "Option $option not set in $conf_file\n" unless defined $options{$option} && length $options{$option};
+    die "Option '$option' not set in $conf_file\n" unless defined $options{$option} && length $options{$option};
 }
 
 my ($json_file, $session_file) = map rel2abs($options{$_}, $Bin), @options;
@@ -75,22 +81,19 @@ if ($params{init}) {
     open(my $fh, '>', $session_file) or die "Cannot open $session_file for writing: $!\n";
     print {$fh} "$params{session}\n";
     close($fh);
+
+    print $query->header('application/json');
+    print encode_json({ entries => [], error => undef });
+    exit;
 }
 else {
     open(my $fh, '<', $session_file) or die "Cannot open $session_file for reading: $!\nPerhaps try running --init\n";
-    my $session = do { local $/; <$fh> };
-    chomp $session;
+    chomp(my $session = <$fh>);
     close($fh);
 
     die "Session ID mismatch\n" unless $params{session} eq $session;
 }
 
-my @missing_params = grep { not defined $params{$_} && length $params{$_} } @params;
-if (@missing_params) {
-    my $missing_params = join ', ', map "'$_'", @missing_params;
-    die "Incomplete query: param(s) $missing_params missing or not defined\n";
-}
-
 my %access;
 my $access_file = "$params{netz}.conf";
 
@@ -115,26 +118,35 @@ if (exists $access{$params{name}} && grep /^$params{pc}$/i, @{$access{$params{na
 
     my $data = defined $json && length $json ? decode_json($json) : [];
 
-    for (my $i = 0; $i < @$data; $i++) {
-        if ($params{netz} eq $data->[$i]->{netz}
-         && $params{pc}   eq $data->[$i]->{pc}
-         && $params{name} eq $data->[$i]->{name}) {
-            splice @$data, $i--, 1;
-        }
+    if ($params{list}) {
+        close($fh);
+
+        print $query->header('application/json');
+        print encode_json({ entries => $data, error => undef });
     }
-    push @$data, { map { $_ => $params{$_} } qw(netz pc name ip) };
+    else {
+        for (my $i = 0; $i < @$data; $i++) {
+            if ($params{netz} eq $data->[$i]->{netz}
+             && $params{pc}   eq $data->[$i]->{pc}
+             && $params{name} eq $data->[$i]->{name}) {
+                splice @$data, $i--, 1;
+            }
+        }
+        push @$data, { map { $_ => $params{$_} } qw(netz pc name ip) };
+        $data->[-1]->{time} = time;
 
-    seek($fh, 0, 0)  or die "Cannot seek to start of $json_file: $!\n";
-    truncate($fh, 0) or die "Cannot truncate $json_file: $!\n";
+        seek($fh, 0, 0)  or die "Cannot seek to start of $json_file: $!\n";
+        truncate($fh, 0) or die "Cannot truncate $json_file: $!\n";
 
-    print {$fh} encode_json($data);
+        print {$fh} encode_json($data);
 
-    close($fh);
+        close($fh);
 
-    my @data = grep $_->{netz} eq $params{netz}, @$data;
+        my @data = grep $_->{netz} eq $params{netz}, @$data;
 
-    print $query->header('application/json');
-    print encode_json({ entries => \@data, error => undef });
+        print $query->header('application/json');
+        print encode_json({ entries => \@data, error => undef });
+    }
 }
 else {
     die "Access not permitted\n";