From 85e5e58680ec26f6470d60b6b0486ac45e5bbdb2 Mon Sep 17 00:00:00 2001
From: Alex 'AdUser' Z <ad_user@runbox.com>
Date: Mon, 18 Jun 2018 03:02:05 +1000
Subject: [PATCH] + LDV::Filebin

---
 lib/LDV/Filebin.pm | 180 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 180 insertions(+)
 create mode 100644 lib/LDV/Filebin.pm

diff --git a/lib/LDV/Filebin.pm b/lib/LDV/Filebin.pm
new file mode 100644
index 0000000..7eb5742
--- /dev/null
+++ b/lib/LDV/Filebin.pm
@@ -0,0 +1,180 @@
+package LDV::Filebin;
+
+use strict;
+use warnings;
+use utf8;
+
+use Mojo::Base 'Mojolicious::Controller';
+use Mojo::Asset::File;
+
+use File::MimeInfo::Magic qw(mimetype);
+use Imager;
+
+sub _file_path {
+  my ($self, $fname, $fext, $full) = @_;
+
+  my $path = sprintf "/files/%s.%s", $fname, $fext;
+  return $full ? $self->app->home->rel_file("public/$path") : $path;
+}
+
+sub create {
+  my ($self) = @_;
+
+  $self->access_allowed($self->app->config->{filebin}->{access})
+    or return;
+
+  $self->render;
+}
+
+sub view {
+  my ($self) = @_;
+  my $time = $self->stash('time') || 0;
+
+  eval {
+    my $now = time();
+    my $file = $self->app->db->select('filebin', '*', {created => $time, expire => {'>=' => $now}})->hash
+      or die "file not found\n";
+    $file->{path} = $self->_file_path($time, $file->{fext});
+
+    $self->stash({file => $file}); 1;
+    $self->render; 1;
+  } or do {
+    chomp $@;
+    $self->flash({error => $@});
+    $self->app->log->error($@);
+    $self->redirect_to('/filebin');
+  };
+
+  $self->rendered;
+}
+
+sub save {
+  my ($self) = @_;
+
+  $self->access_allowed($self->app->config->{filebin}->{access})
+    or return;
+
+  eval {
+    my $time = time();
+    my $conf = $self->app->config->{filebin};
+
+    die "request too large\n"
+      if $self->req->is_limit_exceeded;
+
+    my $expire = $self->req->param('expire') || 7; # days
+    my $upload = $self->req->upload('file');
+    die "no file uploaded\n"  unless ($upload and $upload->size > 0);
+    die "file too large\n"    if ($upload->size > $conf->{file_maxsize});
+
+    { # hack: don't use memory backend
+      my $path = POSIX::tmpnam;
+      $upload->move_to($path);
+      $upload->asset(Mojo::Asset::File->new(path => $path));
+      $upload->asset->cleanup(1); # rearm self-destruction
+    }
+
+    my $file = {
+      created => $time, expire => $time + $expire * 86400,
+      ftype   => 'b', # default -- generic binary
+      fsize   => $upload->size,
+      fname   => $upload->filename,
+      fmime   => mimetype($upload->asset->path),
+      fext    => '',
+      res_w   => 0,
+      res_h   => 0,
+    };
+
+    if ($file->{fname} =~ m<\.([a-z0-9]{1,5})$>oi) {
+      $file->{fext} = lc($1);
+    }
+    if ($file->{fmime} =~ m{^image/}o) {
+      my ($max_w, $max_h) = ($conf->{image_maxres} =~ m/(\d+)x(\d+)/oi);
+      Imager->set_file_limits(
+        width => $max_w, height => $max_h,
+        bytes => $conf->{image_maxmem},
+      );
+      # query image
+      my $image = Imager->new(file => $upload->asset->path)
+        or die(Imager->errstr() . "\n");
+      $file->{ftype} = 'i';
+      $file->{fext}  = $image->tags(name => 'i_format'),
+      $file->{res_w} = $image->getwidth,
+      $file->{res_h} = $image->getheight,
+      # make thumb
+      my ($th_w, $th_h) = ($conf->{thumbs_size} =~ m/(\d+)x(\d+)/oi);
+      my $thumb = $image->scale(xpixels => $th_w, ypixels => $th_h, type => 'min');
+      my $path = $self->_file_path("${time}_th", $conf->{thumbs_ext}, 'fullpath');
+      $thumb->write(file => $path)
+        or die $thumb->errstr;
+    } elsif ($file->{fmime} =~ m{^video/}o) {
+      $file->{ftype} = 'v';
+    } elsif ($file->{fmime} =~ m{^audio/}o) {
+      $file->{ftype} = 'a';
+    } elsif ($file->{fmime} =~ m{^text/}o) {
+      $file->{ftype} = 't';
+    }
+
+    $upload->move_to($self->_file_path($time, $file->{fext}, 'fullpath'));
+    $self->app->db->insert('filebin', $file);
+
+    $self->redirect_to("/filebin/$time");
+  } or do {
+    chomp $@;
+    $self->app->log->error($@);
+    $@ =~ s/\s+ at \s+ .+ \s+ line \s+ \d+//oxi;
+    $self->flash({error => $@});
+    $self->redirect_to('/filebin');
+  };
+
+  $self->rendered;
+}
+
+sub latest {
+  my ($self) = @_;
+
+  eval {
+    my $now = time();
+    my @files = $self->app->db->select('filebin', '*', {expire => {'>=' => $now}}, {-desc => 'created'})->hashes;
+    splice(@files, 15); # first 15 elements
+    foreach my $file (@files) {
+      $file->{thumb} = $self->_file_path($file->{created}, $file->{fext});
+      $file->{url}  = sprintf '/filebin/%d', $file->{created};
+    }
+    $self->stash(files => \@files);
+    $self->render;
+  } or do {
+    chomp $@;
+    $self->flash({error => $@});
+    $self->app->log->error($@);
+    $self->redirect_to('/filebin');
+  };
+}
+
+sub prune {
+  my ($self) = @_;
+
+  $self->access_allowed($self->app->config->{filebin}->{access})
+    or return;
+
+  eval {
+    my $now = time();
+    my $conf = $self->app->config->{filebin};
+    my @files = $self->app->db->select('filebin', '*', {expire => {'<=' => $now}})->hashes;
+    foreach my $file (@files) {
+      unlink $self->_file_path($file->{created}, $file->{fext}, 1);
+      if ($file->{ftype} eq 'i') {
+        unlink $self->_file_path("$file->{created}_tn", $conf->{thumbs_ext}, 1);
+      }
+      $self->app->db->delete('filebin', {id => $file->{id}});
+    } 1;
+  } or do {
+    chomp $@;
+    $self->flash({error => $@});
+    $self->app->log->error($@);
+  };
+
+  $self->redirect_to('/filebin');
+  $self->rendered;
+}
+
+1;