Add support to ban extensions
parent
47d733b2f4
commit
968a288866
GPG Key ID:
B39C0BCEE94A4A89
176
http/sakisafe.pl
176
http/sakisafe.pl
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@ -1,13 +1,11 @@
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#!/usr/bin/perl
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# This file is part of sakisafe.
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use if $^O eq "openbsd", OpenBSD::Pledge, qw(pledge);
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use Mojolicious::Lite -signatures;
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use Mojolicious::Routes::Pattern;
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use Mojo::Log;
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use Time::HiRes;
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use List::MoreUtils qw(uniq);
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use Carp;
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use Term::ANSIColor;
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use English;
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use MIME::Types;
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@ -18,88 +16,96 @@ use feature 'say';
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plugin 'RenderFile';
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# OpenBSD promises.
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pledge("stdio cpath rpath wpath inet flock fattr") if $^O eq "openbsd";
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pledge("stdio prot_exec cpath rpath wpath inet flock fattr")
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if $^O eq "openbsd";
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# 100 MBs
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my $MAX_SIZE = 1024 * 1024 * 100;
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# 500 MBs
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my @BANNED = eval { path('banned.txt')->slurp_utf8 } || qw(); # Add banned IP addresses here
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my $MAX_SIZE = 1024 * 1024 * 1000;
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my @BANNED = eval { path('banned.txt')->slurp_utf8 }
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or qw(); # Add banned IP addresses here
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my @BANNED_EXTS = eval { path('banned_exts.txt')->slurp_utf8 }
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or qw(); # Add forbidden files extensions here
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my $dirname;
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my $link;
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mkdir "f";
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# Mojo logger
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my $log = Mojo::Log->new(path => 'sakisafe.log', level => 'trace');
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$log->color(1);
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# Forward logs to STDERR or STDOUT while also writing to the `sakisafe.log` file.
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$log->on(
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message => sub ($l, $level, @lines) {
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my $time = time;
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my ($s, $m, $h, $day, $month, $year) = localtime time;
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$time = sprintf(
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'%04d-%02d-%02d %02d:%02d:%08.5f',
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$year + 1900,
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$month + 1, $day, $h, $m, "$s." . ((split '.', $time)[1] // 0)
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);
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my $log_to_print = '[' . $time . '] ' . '[' . $level . '] ' . join(' ', @lines);
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if ($level eq 'trace' || $level eq 'info') {
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say $log_to_print;
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}
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else {
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print \*STDERR, $log_to_print . "\n";
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}
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}
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);
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# Function to handle file uploads
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sub logger ( $level, $address, $message ) {
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open( my $fh, ">>", "sakisafe.log" );
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printf( $fh "[%s]: %s has uploaded file %s\n", $level, $address, $message );
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close($fh);
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}
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sub handle_file {
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my $c = shift;
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my $filedata = $c->param("file");
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if ($filedata->size > $MAX_SIZE) {
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return $c->render(text => "Max upload size: $MAX_SIZE", status => 400);
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}
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my $c = shift;
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my $filedata = $c->param("file");
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if ( $filedata->size > $MAX_SIZE ) {
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return $c->render(
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text => "Max upload size: $MAX_SIZE",
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status => 400
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);
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}
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if (List::MoreUtils::any { $c->tx->remote_address } uniq @BANNED) {
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$log->info("Attempt to upload by banned IP: " . $c->tx->remote_address);
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$c->render(
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text => "Hi! Seems like the server admin added your IP address to the banned IP array."
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. "As the developer of sakisafe, I can't do anything.",
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status => 403
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);
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return;
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}
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if ( List::MoreUtils::any { /$c->tx->remote_address/ } uniq @BANNED ) {
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$c->render(
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text =>
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"Hi! Seems like the server admin added your IP address to the banned IP array."
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. "As the developer of sakisafe, I can't do anything.",
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status => 403
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);
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return;
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}
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# Generate random string for the directory
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my @chars = ('0' .. '9', 'a' .. 'Z');
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$dirname .= $chars[rand @chars] for 1 .. 5;
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my $filename = $filedata->filename;
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$log->warn("sakisafe warning: could not create directory: $ERRNO") unless mkdir("f/" . $dirname);
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$filename .= ".txt" if $filename eq "-";
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# Generate random string for the directory
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my @chars = ( '0' .. '9', 'a' .. 'Z' );
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$dirname .= $chars[ rand @chars ] for 1 .. 5;
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my $filename = $filedata->filename;
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my ($ext) = $filename =~ /(\.[^.]+)$/;
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if ( List::MoreUtils::any { /$ext/ } uniq @BANNED_EXTS ) {
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$c->render( text => "You cannot this filetype.\n", status => 415 );
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say $ext;
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logger( "WARN", $c->tx->remote_address, $dirname . "/" . $filename );
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return;
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}
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carp( color("bold yellow"),
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"sakisafe warning: could not create directory: $ERRNO",
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color("reset") )
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unless mkdir( "f/" . $dirname );
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$filename .= ".txt" if $filename eq "-";
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# TODO: get whether the server is http or https
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# There's a CGI ENV variable for that.
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my $host = $c->req->url->to_abs->host;
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my $ua = $c->req->headers->user_agent;
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$filedata->move_to("f/" . $dirname . "/" . $filename);
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$link = "http://$host/f/$dirname/$filename";
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$c->stash(link => $link, host => $host, dirname => $dirname);
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# TODO: get whether the server is http or https
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# There's a CGI ENV variable for that.
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my $host = $c->req->url->to_abs->host;
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my $ua = $c->req->headers->user_agent;
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$filedata->move_to( "f/" . $dirname . "/" . $filename );
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$link = "http://$host/f/$dirname/$filename";
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$c->stash( link => $link, host => $host, dirname => $dirname );
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$c->res->headers->header('Location' => "$link" . $filename);
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$c->res->headers->header( 'Location' => "$link" . $filename );
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# Only give the link to curl, html template for others.
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if ($ua =~ m/curl/) {
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$c->render(text => $link . "\n", status => 201,);
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# Only give the link to curl, html template for others.
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$dirname = "";
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}
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else {
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$c->render(template => 'file', status => 201,);
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}
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if ( $ua =~ m/curl/ || $ua eq "" ) {
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$c->render(
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text => $link . "\n",
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status => 201,
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);
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$log->info($c->tx->remote_address . " " . $dirname . "/" . $filename);
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$dirname = "";
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$dirname = "";
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}
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else {
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$c->render(
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template => 'file',
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status => 201,
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);
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}
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logger( "INFO", $c->tx->remote_address, $dirname . "/" . $filename );
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$dirname = "";
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}
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# Function to log uploaded files
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@ -110,19 +116,22 @@ post '/' => sub ($c) { handle_file($c) };
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# Allow files to be downloaded.
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get '/f/:dir/#name' => sub ($c) {
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my $dir = $c->param("dir");
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my $file = $c->param("name");
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my $ext = $file;
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$ext =~ s/.*\.//;
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my $path = "f/" . $dir . "/" . $file;
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my $dir = $c->param("dir");
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my $file = $c->param("name");
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my $ext = $file;
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$ext =~ s/.*\.//;
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my $path = "f/" . $dir . "/" . $file;
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#carp "sakisafe warning: could not get file: $ERRNO" unless
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$c->render(text => "file not found", status => 404) unless -e $path;
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$c->render_file(filepath => $path, format => $ext, content_disposition => 'inline');
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#carp "sakisafe warning: could not get file: $ERRNO" unless
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$c->render( text => "file not found", status => 404 ) unless -e $path;
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$c->render_file(
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filepath => $path,
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format => $ext,
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content_disposition => 'inline'
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);
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};
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app->log($log);
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app->max_request_size(1024 * 1024 * 100);
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app->max_request_size( 1024 * 1024 * 100 );
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post '/upload' => sub ($c) { handle_file($c) };
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@ -158,6 +167,9 @@ __DATA__
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</body>
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</html>
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__END__
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@@ index.html.ep
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<!DOCTYPE html>
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<html lang="en">
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@ -175,13 +187,14 @@ __DATA__
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<p>POST a file:</p>
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<code>curl -F 'file=@yourfile.png' https://<%= $c->req->url->to_abs->host; %></code>
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<p>Post your text directly</p>
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<code>curl -F 'file=@-' https://<%= $c->req->url->to_abs->host; %></code>
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<code>curl -F 'file=@-' https://<%= $c->req->url->to_abs->host; %></code><br/>
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<a href="https://git.suragu.net/svragv/sakisafe">Git repository</a>
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</center>
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<p>Running sakisafe 2.4.0</p>
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<div class="left">
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<h2>Or just upload a file here</h2>
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<form ENCTYPE='multipart/form-data' method='post' action='/upload'>
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<input type='file' name='file' size='30' required/>
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<input type='file' name='file' size='30'/>
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<input type='submit' value='upload'/>
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</form>
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</div>
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@ -189,6 +202,7 @@ __DATA__
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</html>
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__END__
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=pod
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=head1 sakisafe
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