pdf-spamc-stream

spamc-stream

spamc-stream is a nodejs module that connects to spamassassin's spamd daemon. You are able to:

• Check a message for a spam score and return back what spamassassin matched on
• Stream Messages from any Readable Nodejs Stream
• Ability to train Spamassassin with Ham and Spam
• and everything else that spamc is capable of

Usage

npm install spamc-stream

This example will parse a message to spamassassin to perform a report and will callback on success using a file stream. Note that there is no transformation happening on spamc-stream's side therefore the stream is directly piped into the TCP/NET connection.

var fs = require('fs');
var Spamc = require('spamc-stream');
var client = new Spamc();
 
var reporter = client.report();
 
var fsStream = fs.createReadStream('./tmp/file');
fsStream.pipe(reporter);
 
reporter.on('report', function(report) {
  console.log("Was the email a spam?", report.isSpam);
})
 
reporter.on('error', function(error) {
  console.log(error);
})

Connection settings

You can define connection settings such as host, port and timeout when creating a new instance:

var Spamc = require('spamc-stream');
// Args, Host, Port, Timeout (seconds)
var client = new Spamc('localhost', 783, 15);

Note that the default port for Spamassassin is set to 783 and Connection Timeout is in seconds.

Methods

• ping - Check if Spamc is working. Returns two arguments of error and pong. If Pong is true then Spamc is available.
• check (headers:Object) Returns: PassThrough Stream - checks a message for a spam score and returns an object of information.
• report ↑ - like symbols but matches also includes a small description.
• symbols ↑ - like check but also returns what the message matched on.
• reportIfSpam ↑ - only returns a result if message is spam.
• process ↑ - like check but also returns a processed message with extra headers.
• headers ↑ - like check but also returns the message headers in a array.
• spam ↑ - parse a message to spamassassin and learn it as spam
• ham ↑ - parse a message to spamassassin and learn it as ham
• forget ↑ - parse a message to spamassassin and forget it
• tell ↑ - ability to tell spamassassin that the message is spam
• revoke ↑ - abilty to tell spamassassin that the message is not spam

↑ : Follows the same argument pattern as the previous

Header

All functions take a header argument before returning a PassThrough Stream. Documentation on these headers is available here.

Note: To maintain protocol API compatibility it is advised to pass a 'Content-length' header with every request like so:

var fs = require('fs');
var Spamc = require('spamc-stream');
var client = new Spamc();
 
var spam = fs.createReadStream('./samples/easyspam');
var spamLength = fs.statSync('./samples/easyspam').size;
 
var reporter = client.report({ 'Content-length': spamLength });
spam.pipe(reporter);
// ...

Changelog

1.0.5 Change iterate arrays from for loops to forEach. Comment on if checkers of result == null, because give bad results.

License

This module is heavily based on work of Carl Glaysher and who doesn't love the MIT license?