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vmod_urlcode

Varnish URLcode Module

Author: Rogier "DocWilco" Mulhuijzen
Date: 2012-02-15
Version: 1.0
Manual section:3

SYNOPSIS

import urlcode;
urlcode.encode(<string>);
urlcode.decode(<string>);

DESCRIPTION

Varnish Module (vmod) for encoding or decoding to/from "percent encoding" as per RFC3986.

For backward compatibility, a + will be decoded to a space.

FUNCTIONS

Example VCL:

backend foo { ... };

import urlcode;

sub vcl_recv {
        set req.url = "/example?url=" + urlcode.encode("http://" +
                req.http.host + req.url);
}

encode

Prototype
urlcode.encode(STRING_LIST input)
Return value
STRING
Description
Returns a percent encoded version of input. Or NULL if sess_workspace does not have enough space for the operation.
Example
set resp.http.foo = urlcode.encode("hello world!");

decode

Prototype
urlcode.decode(STRING_LIST input)
Return value
STRING
Description
Returns a percent decoded version of input. Or NULL if either the encoding is invalid or sess_workspace does not have enough space for the operation.
Example
set resp.http.foo = urlcode.decode("hello%20world%21");

INSTALLATION

The source tree is based on autotools to configure the building, and does also have the necessary bits in place to do functional unit tests using the varnishtest tool.

Usage:

./configure VARNISHSRC=DIR [VMODDIR=DIR]

VARNISHSRC is the directory of the Varnish source tree for which to compile your vmod. Both the VARNISHSRC and VARNISHSRC/include will be added to the include search paths for your module.

Optionally you can also set the vmod install directory by adding VMODDIR=DIR (defaults to the pkg-config discovered directory from your Varnish installation).

Make targets:

  • make - builds the vmod
  • make install - installs your vmod in VMODDIR
  • make check - runs the unit tests in src/tests/*.vtc

HISTORY

Version 1.0: Initial version.

COPYRIGHT

This document is licensed under the same license as the libvmod-urlcode project. See LICENSE for details.

  • Copyright (c) 2012 Fastly Inc.