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cgit - CGI for Git
==================

This is an attempt to create a fast web interface for the Git SCM, using a
built-in cache to decrease server I/O pressure.

Installation
------------

Building cgit involves building a proper version of Git. How to do this
depends on how you obtained the cgit sources:

a) If you're working in a cloned cgit repository, you first need to
initialize and update the Git submodule:

    $ git submodule init     # register the Git submodule in .git/config
    $ $EDITOR .git/config    # if you want to specify a different url for git
    $ git submodule update   # clone/fetch and checkout correct git version

b) If you're building from a cgit tarball, you can download a proper git
version like this:

    $ make get-git

When either a) or b) has been performed, you can build and install cgit like
this:

    $ make
    $ sudo make install

This will install `cgit.cgi` and `cgit.css` into `/var/www/htdocs/cgit`. You
can configure this location (and a few other things) by providing a `cgit.conf`
file (see the Makefile for details).


Dependencies
------------

* libzip
* libcrypto (OpenSSL)
* libssl (OpenSSL)

Apache configuration
--------------------

A new `Directory` section must probably be added for cgit, possibly something
like this:

    <Directory "/var/www/htdocs/cgit/">
        AllowOverride None
        Options +ExecCGI
        Order allow,deny
        Allow from all
    </Directory>


Runtime configuration
---------------------

The file `/etc/cgitrc` is read by cgit before handling a request. In addition
to runtime parameters, this file may also contain a list of repositories
displayed by cgit (see `cgitrc.5.txt` for further details).

The cache
---------

When cgit is invoked it looks for a cache file matching the request and
returns it to the client. If no such cache file exists (or if it has expired),
the content for the request is written into the proper cache file before the
file is returned.

If the cache file has expired but cgit is unable to obtain a lock for it, the
stale cache file is returned to the client. This is done to favour page
throughput over page freshness.

The generated content contains the complete response to the client, including
the HTTP headers `Modified` and `Expires`.

Online presence
---------------

* The cgit homepage is hosted by cgit at <https://git.zx2c4.com/cgit/about/>

* Patches, bug reports, discussions and support should go to the cgit
  mailing list: <cgit@lists.zx2c4.com>. To sign up, visit
  <https://lists.zx2c4.com/mailman/listinfo/cgit>
ollow=1'>makefile: bump versionJason A. Donenfeld Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-17mailmap: source before lighttpdJason A. Donenfeld Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-17ui-shared: do not allow negative minutesJason A. Donenfeld Do to timestamp differences, sometimes cgit would should "-0 min", which doesn't make any sense. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-17auth: document tweakables in lua scriptJason A. Donenfeld Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-17repolist: make owner clickable to searchJason A. Donenfeld Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-17ui-shared: move about tab all the way to the leftJason A. Donenfeld There were no objections (at the time of committing this): http://lists.zx2c4.com/pipermail/cgit/2013-May/001393.html http://lists.zx2c4.com/pipermail/cgit/2014-January/001904.html Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-17filter: don't forget to reap the auth filterJason A. Donenfeld Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-17cgit.c: free tmp variableJason A. Donenfeld Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-17Switch to exclusively using global ctxLukas Fleischer Drop the context parameter from the following functions (and all static helpers used by them) and use the global context instead: * cgit_print_http_headers() * cgit_print_docstart() * cgit_print_pageheader() Remove context parameter from all commands Drop the context parameter from the following functions (and all static helpers used by them) and use the global context instead: * cgit_get_cmd() * All cgit command functions. * cgit_clone_info() * cgit_clone_objects() * cgit_clone_head() * cgit_print_plain() * cgit_show_stats() In initialization routines, use the global context variable instead of passing a pointer around locally. Remove callback data parameter for cache slots This is no longer needed since the context is always read from the global context variable. Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de> 2014-01-16auth: have cgit calculate login addressJason A. Donenfeld This way we're sure to use virtual root, or any other strangeness encountered. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-16auth: lua string comparisons are time invariantJason A. Donenfeld By default, strings are compared by hash, so we can remove this comment. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-16authentication: use hidden form instead of refererJason A. Donenfeld This also gives us some CSRF protection. Note that we make use of the hmac to protect the redirect value. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-16auth: add basic authentication filter frameworkJason A. Donenfeld This leverages the new lua support. See filters/simple-authentication.lua for explaination of how this works. There is also additional documentation in cgitrc.5.txt. Though this is a cookie-based approach, cgit's caching mechanism is preserved for authenticated pages. Very plugable and extendable depending on user needs. The sample script uses an HMAC-SHA1 based cookie to store the currently logged in user, with an expiration date. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> 2014-01-16t0111: Additions and fixesLukas Fleischer * Rename the capitalize-* filters to dump.* since they also dump the arguments. * Add full argument validation to the email filters. Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de> 2014-01-16parsing.c: Remove leading space from committerLukas Fleischer