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diff --git a/doc/guix.texi b/doc/guix.texi index f90bb3dfbe..777ca2738b 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -17436,7 +17436,11 @@ Defaults to @samp{3} @subsubsection Version Control Services The @code{(gnu services version-control)} module provides a service to -allow remote access to local Git repositories. +allow remote access to local Git repositories. There are two options: +the @code{git-daemon-service}, which provides access to repositories via +the @code{git://} unsecured TCP-based protocol, or extending the +@code{nginx} web server to proxy some requests to +@code{git-http-backend}. @deffn {Scheme Procedure} git-daemon-service [#:config (git-daemon-configuration)] @@ -17493,6 +17497,81 @@ Extra options will be passed to @code{git daemon}, please run @end table @end deftp +The @code{git://} protocol lacks authentication. When you pull from a +repository fetched via @code{git://}, you don't know that the data you +receive was modified is really coming from the specified host, and you +have your connection is subject to eavesdropping. It's better to use an +authenticated and encrypted transport, such as @code{https}. Although Git allows you +to serve repositories using unsophisticated file-based web servers, +there is a faster protocol implemented by the @code{git-http-backend} +program. This program is the back-end of a proper Git web service. It +is designed to sit behind a FastCGI proxy. @xref{Web Services}, for more +on running the necessary @code{fcgiwrap} daemon. + +Guix has a separate configuration data type for serving Git repositories +over HTTP. + +@deftp {Data Type} git-http-configuration +Data type representing the configuration for @code{git-http-service}. + +@table @asis +@item @code{package} (default: @var{git}) +Package object of the Git distributed version control system. + +@item @code{git-root} (default: @file{/srv/git}) +Directory containing the Git repositories to expose to the world. + +@item @code{export-all?} (default: @var{#f}) +Whether to expose access for all Git repositories in @var{git-root}, +even if they do not have the @file{git-daemon-export-ok} file. + +@item @code{uri-path} (default: @file{/git/}) +Path prefix for Git access. With the default @code{/git/} prefix, this +will map @code{http://@var{server}/git/@var{repo}.git} to +@code{/srv/git/@var{repo}.git}. Requests whose URI paths do not begin +with this prefix are not passed on to this Git instance. + +@item @code{fcgiwrap-socket} (default: @code{127.0.0.1:9000}) +The socket on which the @code{fcgiwrap} daemon is listening. @xref{Web +Services}. +@end table +@end deftp + +There is no @code{git-http-service-type}, currently; instead you can +create an @code{nginx-location-configuration} from a +@code{git-http-configuration} and then add that location to a web +server. + +@deffn {Scheme Procedure} git-http-nginx-location-configuration @ + [config=(git-http-configuration)] +Compute an @code{nginx-location-configuration} that corresponds to the +given Git http configuration. An example nginx service definition to +serve the default @file{/srv/git} over HTTPS might be: + +@example +(service nginx-service-type + (nginx-configuration + (server-blocks + (list + (nginx-server-configuration + (http-port #f) + (server-name "git.my-host.org") + (ssl-certificate + "/etc/letsencrypt/live/git.my-host.org/fullchain.pem") + (ssl-certificate-key + "/etc/letsencrypt/live/git.my-host.org/privkey.pem") + (locations + (list + (git-http-nginx-location-configuration + (git-http-configuration (uri-path "/")))))))))) +@end example + +This example assumes that you are using Let's Encrypt to get your TLS +certificate. @xref{Certificate Services}. The default @code{certbot} +service will redirect all HTTP traffic on @code{git.my-host.org} to +HTTPS. You will also need to add an @code{fcgiwrap} proxy to your +system services. @xref{Web Services}. +@end deffn @node Miscellaneous Services @subsubsection Miscellaneous Services |