Page Guard

Page Guard uses a single URL parameter or POST variable as a means of providing a token to guard access to any page on which this plugin's shortcode is placed. Output of alternative content can be made to occur when the token is missing or fails to match what is expected - if the token received matches the expected one, the controlled content can be revealed to the visitor. For this version, an additional shortcode attribute "title" also allows the page title to be changed conditionally PROVIDED JAVASCRIPT IS ENABLED IN THE BROWSER (it has no effect if JavaScript is turned off!) The shortcode to use is 'pageguard' - its attributes are: tokenparam (required) -> a string value containing the name of the token URL param - e.g. 'mytoken' eq (optional) -> a string value containing the expected value of the tokenparam - e.g. 'x34ggj45b' ne (optional) -> as for "eq" but when used, shortcode will output content on non matching token absent (optional) -> when absent="1", shortcode will output content on detection of missing token title (optional) -> a string containing a page title to apply when the parent shortcode's criteria are met Syntax examples: show block on matching token - [pageguard param="token" eq="download"] Text to be output on matching token found [/pageguard] show block on non match + change title [pageguard tokenparam="token" ne="download" title="Downloads - invalid token"] Error text for output when token fails to match [/pageguard] show this on no token found + change title [pageguard tokenparam="token" absent="1" title="Downloads - missing token"] Error text for output when token is missing [/pageguard]

1.1 Added JavaScript based support for changing page title to match shortcode criteria 1.0 First implementation