git-http-backend returns error 502

Question

I\'m running gitweb and gitolite on my server: http://git.jshawl.com/

I\'m having trouble setting up the git-http-backend to allow anonymous cloning.

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Answer 1

Here is another approach in this httpd.conf which works well for cloning/pushing/pulling, but it doesn't call gitweb.cgi:

GitWeb is for browsing, not for cloning

(small extract, removing Auth details, and SSL details)

# GitHttp on @PORT_HTTP_HGIT@
Listen @PORT_HTTP_HGIT@
<VirtualHost @FQN@:@PORT_HTTP_HGIT@>
  ServerName @FQN@
  ServerAlias @HOSTNAME@
  SetEnv GIT_PROJECT_ROOT @H@/repositories
  SetEnv GIT_HTTP_EXPORT_ALL
  SetEnv GITOLITE_HTTP_HOME @H@
  ScriptAlias /hgit/ @H@/gitolite/bin/gitolite-shell/
  SetEnv GIT_HTTP_BACKEND "@H@/usr/local/apps/git/libexec/git-core/git-http-backend"
  <FilesMatch "\.(cgi|shtml|phtml|php)$">
    SSLOptions +StdEnvVars
  </FilesMatch>
  <Location /hgit>
    AddHandler cgi-script cgi
  </Location>
</VirtualHost>

In other words:

• git-http-backend is referenced by the variable GIT_HTTP_BACKEND, but you won't need it if you are using Gitolite V3.
• gitolite-shell is called when you are using /hgit/ in your cloning address: theat GitoliteV3 script will check if you have the right to clone the repo, and if yes, will call the commands behind the script git-http-backend: 'git-receive-pack' (for push) or 'git-upload-pack' (for clone/pull/fetch), straight from the git source itself http-backend.c.

So:

git clone https://yourServer/hgit/yourRepo

Will call gitolite, which will call 'git-receive-pack' or 'git-upload-pack'.
It will first analyze the http request by calling sub http_simulate_ssh_connection()

sub http_simulate_ssh_connection {
    # these patterns indicate normal git usage; see "services[]" in
    # http-backend.c for how I got that. Also note that "info" is overloaded;
    # git uses "info/refs...", while gitolite uses "info" or "info?...". So
    # there's a "/" after info in the list below
    if ( $ENV{PATH_INFO} =~ m(^/(.*)/(HEAD$|info/refs$|objects/|git-(?:upload|receive)-pack$)) ) {
        my $repo = $1;
        my $verb = ( $ENV{REQUEST_URI} =~ /git-receive-pack/ ) ? 'git-receive-pack' : 'git-upload-pack';
        $ENV{SSH_ORIGINAL_COMMAND} = "$verb '$repo'";
    } else {
        # this is one of our custom commands; could be anything really,
        # because of the adc feature
        my ($verb) = ( $ENV{PATH_INFO} =~ m(^/(\S+)) );
        my $args = $ENV{QUERY_STRING};
        $args =~ s/\+/ /g;
        $args =~ s/%([0-9A-Fa-f]{2})/chr(hex($1))/eg;
        $ENV{SSH_ORIGINAL_COMMAND} = $verb;
        $ENV{SSH_ORIGINAL_COMMAND} .= " $args" if $args;
        http_print_headers(); # in preparation for the eventual output!
    }
    $ENV{SSH_CONNECTION} = "$ENV{REMOTE_ADDR} $ENV{REMOTE_PORT} $ENV{SERVER_ADDR} $ENV{SERVER_PORT}";
}