A new module is available in OpenSIPS 1.5.0. The REGEX module is intended to offers matching operations against regular expressions using the powerful PCRE library.
A text file containing regular expressions categorized in groups is compiled when the module is loaded, storing the compiled PCRE objects in an array. A function to match a string or pseudo-variable against any of these groups is provided. The text file can be modified and reloaded at any time via a MI command. The module also offers a function to perform a PCRE matching operation against a regular expression provided as function parameter.
For more, see the module documentation.