CGI Security Documentation

CGIWrap Introduction

CGIWrap is a gateway program designed to let general users run CGI scripts and HTML forms without weakening the security of the HTTP server. Instead of executing scripts under a broad shared server identity, CGIWrap runs them with the permissions of the user who owns the script, which helps create a cleaner and more accountable execution model.

Because user-owned CGI execution can create security risks if it is handled loosely, CGIWrap also performs several checks before allowing a script to run. If those checks fail, the script is not executed. That balance between usability and security is what made CGIWrap an important utility in Unix hosting and shared CGI environments.

What CGIWrap Does

CGIWrap exists to solve a practical web hosting problem: allowing users to make use of CGI scripts and HTML form processing without handing them unrestricted script execution through the web server. By acting as a controlled gateway, CGIWrap helps preserve separation between user-owned scripts and the broader permissions of the server itself.

In normal use, scripts are executed with the permissions of the user who owns them. That changes the security model in an important way. Instead of every user script behaving as though it belongs to the server process, the script remains tied to the user account responsible for it. This improves accountability and reduces the chance that one poorly written script can operate with overly broad privileges.

Security-Oriented Execution

CGIWrap does more than simply pass execution through to a script. It also performs security checks on the target script before running it. If those checks fail, execution is denied. This helps protect the server from unsafe script conditions and gives administrators a more controlled framework for supporting CGI usage in shared Unix environments.

That combination of user-level execution and pre-execution checks is the core idea behind CGIWrap. It is not just a convenience wrapper for CGI scripts. It is a security-conscious gateway intended to make CGI usage more practical in environments where multiple users need access without exposing the full web server context.

How CGIWrap Is Used

CGIWrap is typically used through a URL placed in an HTML document. As distributed, it is configured to run user scripts located in the ~/public_html/cgi-bin/ directory. That default structure gives users a predictable location for CGI content while fitting the common layout used in traditional Unix web hosting environments.

From there, the rest of the documentation expands on setup, installation, access control, troubleshooting, and related execution details. This introduction is meant to provide the basic conceptual picture before moving into those more specific administrative and user-facing topics.