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|
#!/usr/bin/perl
use strict;
use DBI;
use File::MMagic;
use CGI;
use File::Slurp;
use Amazon::S3;
use JSON;
use Redis;
#set the temporary directory here
my $uploaddir = '/tmp/';
#maximum filesize goes here
my $maxFileSize = 0.5 * 1024 * 1024;
my $maxRequestInterval = 40;
my $maxRequestLimit = 3;
my $thumbnailType = "png";
#aws credentials here
my $aws_access_key_id = "AKIAIR53VPBXKJMXZIBA";
my $aws_secret_access_key = "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";
#SQL CONNECTIONS
my $sql_username = "asdfus";
my $sql_dbname = "asdfus";
my $sql_passwd = "gTYgT&M6q";
our $dbh = DBI->connect("DBI:mysql:$sql_dbname", $sql_username, $sql_passwd);
#redis
my $redis = Redis->new;
my $api_name = "shaderThumbnail";
my $time_now = time();
my $IN = new CGI;
my $resp = {};
sub get_postdata{
return $IN->param('POSTDATA');
}
sub check_limits{
my ($api_name, $tf_length, $limit, $ip, $now) = @_;
my $new_tf;
my $value = $redis->get(sprintf("%s_%s", $ip, $api_name));
if (! $value){
# create new timeframe
$new_tf = sprintf("%d-%d", $now , 1); # tf starts now
}else{
my ($tf_start, $req_count) = ($value =~ /(\d+)-(\d+)/);
my $reset_time = $tf_start + $tf_length;
if ($reset_time < $now) {
$new_tf = sprintf("%d-%d", $now , 1);
}else{
# still in tf, check limits, increase counter
$req_count++;
if ($req_count > $limit){
# return the too many requests error
return int($reset_time - $now)
}else{
# increase request count
$new_tf = sprintf("%d-%d", $tf_start, $req_count);
}
}
}
my $redis_key = sprintf("%s_%s", $ip, $api_name );
$redis->set($redis_key, $new_tf);
$redis->expire($redis_key, $tf_length*2); #arbitrary time longer than other interval
return 0;
}
#qq file is the default name for the file parameter when using qq upload. change if necessary
sub get_filedata{
my $file = $IN->upload('qqfile');
if ($file){
return read_file( $file, binmode => ':raw' ) ;
}else{
return
}
}
sub make_filename{
return sprintf("%s.%s", $IN->param("id"), $thumbnailType);
}
sub make_thumbnail_url{
my $filename = shift;
return sprintf("http://i.asdf.us/shader_thumb/%s", $filename);
}
sub check_db{
my $data_id = shift;
my $statement = 'select thumbnail_url from shaders where id = ?';
my $sth = $dbh->prepare($statement)
or die "Couldn't prepare statement: " . $dbh->errstr;
$sth->execute($data_id)
or die "Couldn't execute statement: " . $sth->errstr;
my $data = $sth->fetchrow_hashref();
if ($sth->rows == 0) {
error( "No ids matched $data_id.");
}
$sth->finish;
return $data->{thumbnail_url};
}
sub add_to_db{
my $thumbnail_url = shift;
my $shader_id = shift;
unless($dbh){ return undef && error( "Could not connect to database: $DBI::errstr")};
my $execute = $dbh->do(
"UPDATE shaders set thumbnail_url = ? WHERE id = ?",
undef,
$thumbnail_url,
$shader_id
);
return $execute;
}
sub write_to_file{
my $filepath = shift;
my $filedata = shift;
write_file( $filepath, {binmode => ':raw'}, $filedata ) or return undef;
return 1;
}
sub upload_to_AmazonS3{
my $keyname = shift;
my $value = shift;
my $s3 = Amazon::S3->new(
{
aws_access_key_id => $aws_access_key_id,
aws_secret_access_key => $aws_secret_access_key
}
);
my $bucket = $s3->bucket("i.asdf.us");
$bucket->add_key(
$keyname, $value,
{
content_type => sprintf("image/%s", $thumbnailType)
}
);
return $bucket;
}
sub error{
my $message = shift;
my $resp = { success => JSON::false, "error" => $message };
print JSON->new->encode($resp);
exit 1;
}
sub main{
print $IN->header();
check_limits($api_name, $maxRequestInterval,
$maxRequestLimit, $ENV{REMOTE_ADDR}, $time_now);
my $filedata = get_postdata() || get_filedata();
unless($filedata){ error("NO DATA RECIEVED") };
unless($IN->param('id')){ error("Shader id not specified") };
if (check_db($IN->param('id'))){ error("thumbnail already in database") };
my $filesize = length($filedata);
if ($filesize < 1) {
error( "EMPTY FILE");
} elsif ($filesize > $maxFileSize) {
error("FILE TOO LARGE");
}
my $thumbnail_url = make_thumbnail_url(make_filename);
unless(upload_to_AmazonS3(sprintf("shader_thumb/%s", make_filename()), $filedata)){
error("UNABLE TO UPLOAD TO AMAZONS3");
};
unless(add_to_db($thumbnail_url, $IN->param('id'))){
print "can you see anything here???";
error( "problem adding value to db");
}
my $resp = {
success => JSON::true,
url => $thumbnail_url,
filesize => $filesize
};
print JSON->new->encode($resp);
exit(0);
}
main();
|
