Cgit

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Cgit is an attempt to create a fast web interface for the git version control system, using a built in cache to decrease pressure on the git server.

Installation

Install the cgit package.

In order to actually use cgit you will also need to have a web server installed on your system, like for example Apache.

Configuration of Web Server

Apache

You may add the following either to the end of your /etc/httpd/conf/httpd.conf file or place it in a separate file inside the /etc/httpd/conf/extra/ directory.

ScriptAlias /cgit/ "/usr/lib/cgit/cgit.cgi/"
Alias /cgit-css "/usr/share/webapps/cgit/"
<Directory "/usr/share/webapps/cgit/">
   AllowOverride None
   Options None
   Require all granted
</Directory>
<Directory "/usr/lib/cgit/">
   AllowOverride None
   Options ExecCGI FollowSymlinks
   Require all granted
</Directory>

Make sure that the cgi module is being loaded in the httpd.conf by uncommenting this line:

LoadModule cgi_module modules/mod_cgi.so

and restart httpd.service to apply the changes.

Lighttpd

The following configuration will let you access cgit through http://your.server.com/cgit with http://your.server.com/git redirecting to it. It is not perfect (for example you will see "cgit.cgi" in all repos' url) but works.

Create the file /etc/lighttpd/conf.d/cgit.conf:

server.modules += ("mod_redirect",
                  "mod_alias",
                  "mod_cgi",
                  "mod_fastcgi",
                  "mod_rewrite" )

var.webapps  = "/usr/share/webapps/"
$HTTP["url"] =~ "^/cgit" {
    server.document-root = webapps
    server.indexfiles = ("cgit.cgi")
    cgi.assign = ("cgit.cgi" => "")
    mimetype.assign = ( ".css" => "text/css" )
}
url.redirect = (
    "^/git/(.*)$" => "/cgit/cgit.cgi/$1",
)

And include this file in /etc/lighttpd/lighttpd.conf:

include "conf.d/cgit.conf"

and restart lighttpd.

Lighttpd sub-domain

This alternative lighttpd configuration will serve Cgit on a sub-domain like git.example.com with optional SSL support, and rewrites creating nice permalinks:

   # GIT repository browser
   #$SERVER["socket"] == "127.0.0.1:443" {
   $SERVER["socket"] == "127.0.0.1:80" {
     #ssl.engine                    = "enable"
     #ssl.pemfile                   = "/etc/lighttpd/ssl/git.example.com.pem"
     
     server.name          = "git.example.com"
     server.document-root = "/usr/share/webapps/cgit"
     
     index-file.names     = ( "cgit.cgi" )
     cgi.assign           = ( "cgit.cgi" => "/usr/share/webapps/cgit/cgit.cgi" )
     url.rewrite-once     = (
       "^/([^?/]+/[^?]*)?(?:\?(.*))?$"   => "/cgit.cgi?url=$1&$2",
     )
   }

Nginx

Using fcgiwrap

The following configuration uses fcgiwrap and will serve Cgit on a subdomain like git.example.com.

Start and enable fcgiwrap.socket. Then, configure Nginx:

/etc/nginx/nginx.conf
worker_processes          1;
 
events {
  worker_connections      1024;
}
 
http {
  include                 mime.types;
  default_type            application/octet-stream;
  sendfile                on;
  keepalive_timeout       65;
  gzip                    on;
 
  # Cgit
  server {
    listen                80;
    server_name           git.example.com;
    root                  /usr/share/webapps/cgit;
    try_files             $uri @cgit;

    location @cgit {
      include             fastcgi_params;
      fastcgi_param       SCRIPT_FILENAME $document_root/cgit.cgi;
      fastcgi_param       PATH_INFO       $uri;
      fastcgi_param       QUERY_STRING    $args;
      fastcgi_param       HTTP_HOST       $server_name;
      fastcgi_pass        unix:/run/fcgiwrap.sock;
    }
  }
}

Using uwsgi

The following example will setup cgit using the native cgi plugin for uwsgi.

First, install uwsgi and uwsgi-plugin-cgi.

Add below server block to your configuration:

 server {
   listen 80;
   server_name git.example.com;
   root /usr/share/webapps/cgit;
 
 # Serve static files with nginx
 location ~* ^.+(cgit.(css|png)|favicon.ico|robots.txt) {
     root /usr/share/webapps/cgit;
     expires 30d;
   }
   location / {
     try_files $uri @cgit;
   }
   location @cgit {
     gzip off;
     include uwsgi_params;
     uwsgi_modifier1 9;
     uwsgi_pass unix:/run/uwsgi/cgit.sock;
   }
 } 

Add a uwsgi configuration for cgit.

/etc/uwsgi/cgit.ini
[uwsgi]
master = true
plugins = cgi
socket = /run/uwsgi/%n.sock
uid = http
gid = http
procname-master = uwsgi cgit
processes = 1
threads = 2
cgi = /usr/lib/cgit/cgit.cgi

Enable and start the corresponding socket (you could also enable and start the service manually).

# systemctl enable uwsgi@cgit.socket
# systemctl start uwsgi@cgit.socket

Configuration of Cgit

Basic Configuration

Before you can start adding repositories you will first have to create the basic cgit configuration file at /etc/cgitrc.

#
# cgit config
#

css=/cgit.css
logo=/cgit.png

# Following lines work with the above Apache config
#css=/cgit-css/cgit.css
#logo=/cgit-css/cgit.png

# Following lines work with the above Lighttpd config
#css=/cgit/cgit.css
#logo=/cgit/cgit.png

# if you do not want that webcrawler (like google) index your site
robots=noindex, nofollow

# if cgit messes up links, use a virtual-root. For example has cgit.example.org/ this value:
virtual-root=/

Adding repositories

Now you can add your repos:

#
# List of repositories.
# This list could be kept in a different file (e.g. '/etc/cgitrepos')
# and included like this:
#   include=/etc/cgitrepos
#

repo.url=MyRepo
repo.path=/srv/git/MyRepo.git
repo.desc=This is my git repository

# For a non-bare repository
repo.url=MyOtherRepo
repo.path=/srv/git/MyOtherRepo/.git
repo.desc=That's my other git repository

If you prefer not having to manually specify each repository, it is also possible to configure cgit to search for them:

scan-path=/srv/git/

If you are coming from gitweb and want to keep the descriptions and owner information, then use:

enable-git-config=1

For detailed documentation about the available settings in this configuration file, please see the manpage (man cgitrc).

Syntax highlighting

Cgit supports syntax highlighting when viewing blobs. To enable syntax highlighting, you have several options.

Using python-pygments

Install python-pygments and add the filter in /etc/cgitrc

source-filter=/usr/lib/cgit/filters/syntax-highlighting.py

If you want to be able to properly color markdown files, (often called README.md), install python-pygments-markdown-lexerAUR

Using highlight

Install the highlight package.

Copy /usr/lib/cgit/filters/syntax-highlighting.sh to /usr/lib/cgit/filters/syntax-highlighting-edited.sh. Then, in the copied file, comment out version 2 and comment in version 3. You may want to add --inline-css to the options of highlight for a more colorful output without editing cgit's css file.

 # This is for version 2
 #exec highlight --force -f -I -X -S "$EXTENSION" 2>/dev/null
 
 # This is for version 3
 exec highlight --force --inline-css -f -I -O xhtml -S "$EXTENSION" 2>/dev/null

Enable the filter in /etc/cgitrc

source-filter=/usr/lib/cgit/filters/syntax-highlighting-edited.sh
Note: Editing /usr/lib/cgit/filters/syntax-highlighting.sh directly would lose all the modifications as soon as cgit is updated.

Integration

Gitosis

If you want to integrate with gitosis you will have to run two commands to give apache permission to look though the folder.

# chgrp http /srv/gitosis
# chmod a+rx /srv/gitosis

Gitolite

If you added repositories managed by gitolite you have to change the permissions, so the web server can access the files.

  • Add the http user to the gitolite group:
    • # usermod -aG gitolite http
  • Change permission for future repositories:
  • Change permission for the gitolite home directory, and existing repositories. Run the following two commands:
    • # chmod g+rX /var/lib/gitolite
    • # chmod -R g+rX /var/lib/gitolite/repositories

Troubleshooting

snapshots does not show properly

If you have enabled scan-path as well as snapshots, the order in cgitrc matters. According to cgit mailing list, snapshots should be specified before scan-path

snapshots=tar.gz tar.bz2 zip
scan-path=/path/to/your/repositories

source-filter does not work properly

If you have enabled scan-path, again, the order in cgitrc matters. source-filter should be specified before scan-path, otherwise it will have no effect.

References