PHP Function: Verify Unix Login

Hello, I'm looking for a PHP solution for the following: I want to have a PHP function which will allow me to check a *NIX (Unix/Linux) login. For example I want to be able to do this: if (check_linux_login($login, $password) == 1) { // access granted !! }else{ // error, invalid login } Please note that PHP does **NOT** run as root so you'll have to find away around this (for example with a shellscript that runs as root?). The PHP script(and the shellscript if any) MUST be **COMPLETELY SAFE** against ANY code injection or other vulnerability! PS: Linux/Unix accounts with no password are NOT allowed to login. Thank you. ## Deliverables 1) Complete and fully-functional working script(s). 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Linux/BSD PHP4.x and 5.x Apache 1.3.x and 2.x