.\"   $OpenBSD: slowcgi.8,v 1.17 2022/08/06 17:11:36 op Exp $
.\"
.\" Copyright (c) 2013 Florian Obser <florian@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: August 6 2022 $
.Dt SLOWCGI 8
.Os
.Sh NAME
.Nm slowcgi
.Nd a FastCGI to CGI wrapper server
.Sh SYNOPSIS
.Nm
.Op Fl dv
.Op Fl p Ar path
.Op Fl s Ar socket
.Op Fl t Ar timeout
.Op Fl U Ar user
.Op Fl u Ar user
.Sh DESCRIPTION
.Nm
is a server which implements the FastCGI Protocol to execute CGI scripts.
FastCGI was designed to overcome the CGI protocol's scalability
and resource sharing limitations.
While CGI scripts need to be forked for every request, FastCGI scripts
can be kept running and handle many HTTP requests.
.Pp
.Nm
is a simple server that translates FastCGI requests to the CGI protocol.
It executes the requested CGI script and translates its output back to the
FastCGI protocol.
.Pp
Modern web frameworks and web applications usually come with the
capability to run as FastCGI servers.
.Nm
is not intended for these applications.
.Pp
.Nm
opens a socket at
.Pa /var/www/run/slowcgi.sock ,
owned by www:www,
with permissions 0660.
It will then
.Xr chroot 8
to
.Pa /var/www
and drop privileges to user
.Qq www .
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl d
Do not daemonize.
If this option is specified,
.Nm
will run in the foreground and log to stderr.
.It Fl p Ar path
.Xr chroot 2
to
.Ar path .
A
.Ar path
of
.Pa /
effectively disables the chroot.
.It Fl s Ar socket
Create and bind to alternative local socket at
.Ar socket .
.It Fl t Ar timeout
Terminate the request after
.Ar timeout
seconds instead of the default 120 seconds.
The CGI script is left to run but its standard input, output and error
will be closed.
.It Fl U Ar user
Change the owner of
.Pa /var/www/run/slowcgi.sock
to
.Ar user
and its primary group instead of the default www:www.
.It Fl u Ar user
Drop privileges to
.Ar user
instead of default user www and
.Xr chroot 8
to
the home directory of
.Ar user .
.It Fl v
Enable more verbose (debug) logging.
.El
.Sh SEE ALSO
.Xr httpd 8
.Sh STANDARDS
.Rs
.%A Mark R. Brown
.%D April 1996
.%T FastCGI Specification
.Re
.Pp
.Rs
.%A D. Robinson, K. Coar
.%D October 2004
.%R RFC 3875
.%T The Common Gateway Interface (CGI) Version 1.1
.Re
.Sh HISTORY
The
.Nm
server first appeared in
.Ox 5.4 .
.Sh AUTHORS
.An Florian Obser Aq Mt florian@openbsd.org
.Sh BUGS
.Nm
only implements the parts of the FastCGI standard needed to execute
CGI scripts.
This is intentional.