Wydawca
	Release Submission Daemon	Sergey Poznyakoff

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1 Introduction to Wydawca

Let’s begin with a short synopsis. Suppose you run a developer’s site, such as e.g. ‘gnu.org’. You have two distribution URLs: ‘ftp.gnu.org’, which distributes stable versions of the software, and ‘alpha.gnu.org’, which distributes alpha and pre-test versions. Package maintainers need a way of uploading their packages to one of these sites. This is done using the Automated FTP Upload method described in Automated Upload Procedure. The following is a short summary of it: there is an FTP upload site, which has two source directories, each one corresponding to a certain distribution URL. For example,

If maintainer of the project ‘foo’ wishes to make a release of the stable version foo-1.0.tar.gz, he first creates a detached signature foo-1.0.tar.gz.sig. Then he creates a special directive file, which contains information about where the distributed tarball must be placed, and clear-signs it using his PGP key, thus obtaining the file foo-1.0.tar.gz.directive.asc. Finally, he uploads these three files (a triplet) to the upload site, storing them into the directory /incoming/ftp.

From now on, it is the responsibility of a release submission daemon to scan source directories, gather triplets, verify them, and to move any files that had successfully passed verification to their distribution sites.

Wydawca is such a release submission daemon. It is able to handle any number of ‘source/destination’ pairs (called spools) in real time, and offers extensible logging and notification mechanisms, allowing both package maintainers and site administrators to be immediately notified about any occurring problems.

Wydawca supports upload directive versions 1.1¹ and 1.2².

The program is written entirely in C, is highly effective and consumes little resources.