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.\"
.\" Copyright (c) 2023 Stefan Sperling
.\"
.\" 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 $Mdocdate$
.Dt GITWRAPPER 1
.Os
.Sh NAME
.Nm gitwrapper
.Nd invoke an appropriate Git repository server
.Sh SYNOPSIS
.Nm Fl c Sq Cm git-receive-pack Ar repository-path
.Nm Fl c Sq Cm git-upload-pack Ar repository-path
.Sh DESCRIPTION
At one time, the only Git repository server software easily available
was built into
.Xr git-upload-pack 1
and
.Xr git-receive-pack 1
which are part of the
.Xr git 1
suite.
As a result of this, most Git client implementations had the path and
calling conventions expected by
.Xr git 1
compiled in.
.Pp
Times have changed, however.
On a modern system, the administrator may wish to use one of several
available Git repository servers, such as
.Xr gotd 8 .
.Pp
It would be difficult to modify all Git client software typically available
on a system, so most of the authors of alternative Git servers have written
their programs so that they use the same calling conventions as
.Xr git-upload-pack 1
and
.Xr git-receive-pack 1
and may be put into place in their stead.
.Pp
Although having drop-in replacements for
.Xr git-upload-pack 1
and
.Xr git-receive-pack 1
helps in installing alternative Git servers, it essentially makes the
configuration of the system depend on hard installing new programs in
.Pa /usr .
This leads to configuration problems for many administrators, since they may
wish to install a new Git server without altering the system provided
.Pa /usr .
(This may be, for example, to avoid having upgrade problems when a new
version of the system is installed over the old.)
They may also have a shared
.Pa /usr
among several machines, and may wish to avoid placing implicit
configuration information in a read-only
.Pa /usr .
.Pp
The
.Nm
program is designed to replace
.Xr git-upload-pack 1
and
.Xr git-receive-pack 1
and to invoke an appropriate Git server based on configuration information
placed in
.Xr gotd.conf 5 .
This permits the administrator to configure which Git server is to be
invoked on the system at run-time.
Git repositories which are listed in
.Xr gotd.conf 5
and exist on the filesystem will be served by
.Xr gotsh 1 .
Any other Git repositories will be served by
.Xr git-upload-pack 1
and
.Xr git-receive-pack 1
as found in Git's
.Pa libexec
directory, which is
.Pa /usr/local/libexec/git/
by default on
.Ox .
.Sh ENVIRONMENT
.Bl -tag -width GOTD_CONF_PATH
.It Ev GOTD_CONF_PATH
Set the path to the configuration file for
.Xr gotd 8 .
If not specified, the default path
.Pa /etc/gotd.conf
will be used.
.El
.Sh FILES
Configuration for
.Xr gotd 8
is kept in
.Pa /etc/gotd.conf .
.Pp
.Pa git-upload-pack
and
.Pa git-receive-pack
are typically set up as a symlink to
.Nm
which is not usually invoked on its own.
.Sh SEE ALSO
.Xr got 1 ,
.Xr gotd.conf 5 ,
.Xr gotd 8 ,
.Xr mailwrapper 8
.Sh AUTHORS
.An Stefan Sperling Aq Mt stsp@openbsd.org
.Sh BUGS
The entire reason this program exists is a crock.
Instead, a command for invoking a Git server should be standardized or
the Git protocol should be changed to make the path to the program
discoverable by Git clients.
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