@node Configuration
@unnumbered Configuration

Initially @command{godlighty} has basic static files handlers (with
compression, HTTP preconditions are enabled of course). In the example
below there are nearly all default functions.
Also look for @file{rc/example.cfg}.

@verbatim
Hosts["example.com"] = &godlighty.HostCfg{
    Root: "/www/example.com",
    EdDSATLS: &godlighty.TLSCfg{
        Cert: "/path/to/example.com.pem",
        Key: "/path/to/example.com.key.pem",
        CACert: "/path/to/ca.pem",
    },
    DirList: true,
    WebDAV: true,
    MIMEs: map[string]string{
        ".special": "text/x-special-type",
    },
}
@end verbatim

If your keys and certificates are in single file and you use common CA
certificate, then it is trivial to DRY:

@verbatim
var (
    Etc = "/whatever"
    CACert = path.Join(Etc, "ca.pem")
)

func newTLSCfg(host string) *godlighty.TLSCfg {
    return &godlighty.TLSCfg{
        Cert:   path.Join(Etc, host+".pem"),
        Key:    path.Join(Etc, host+".pem"),
        CACert: CACert,
    }
}
@end verbatim

But there are hooks that can do anything more. For example if you want
to run CGI script or make a redirection (FastCGI handler example is in
@file{rc/fcgi.example.cfg}):

@verbatim
HostCfg{
    ...,
    Hooks: []godlighty.Hook{
        func(w http.ResponseWriter, r *http.Request) bool {
            if r.URL.Path == "/" {
                http.Redirect(w, r, "//here.we.go/", http.StatusMovedPermanently)
                return true
            }
            return false
        },
        func(w http.ResponseWriter, r *http.Request) bool {
            cgi.Handler{
                Path: "/usr/local/libexec/git-core/git-http-backend",
                Dir:  "/var/empty",
                Env: []string{
                    "GIT_PROJECT_ROOT=" + root,
                    "GIT_HTTP_EXPORT_ALL=",
                },
            }.ServeHTTP(w, r)
            return true
        },
    },
@end verbatim

You can separate your configuration files and add them through
@code{init()} call:

@verbatim
$ ls rc/stargrave.org.cfg
blog.stargrave.org.go
ca.cypherpunks.ru.go
cgi.go
cryptoanarchy.ru.go
git.go
go.go
if.mirror.cypherpunks.ru.go
lists.cypherpunks.ru.go
static.go
tls.go
[...]

$ cat rc/stargrave.org.cfg/static.go
package rc

import "path"

func addStaticCfg(host, root string) {
    if !path.IsAbs(root) {
        root = path.Join(WWW, root)
    }
    godlighty.Hosts[host] = &godlighty.HostCfg{
        Root: root,
        TLS:  newTLSCfg(host),
    }
}

func addStaticListedDir(host, root string) {
    addStaticCfg(host, root)
    godlighty.Hosts[host].DirList = true
    godlighty.Hosts[host].WebDAV = true
}

func init() {
    [...]
    addStaticCfg("paster.stargrave.org", "/storage/paster/pastes")
    addStaticCfg("www.godlighty.stargrave.org", "godlighty.stargrave.org")
    addStaticCfg("www.nncpgo.org", "nncpgo.org")
    addStaticListedDir("www.mds.cypherpunks.ru", "/storage/audiobook/mds")
    [...]
}
@end verbatim

There are some preexisting helpers to deal with:

@table @file

@item rc/cgi.go
CGI scripts.

@item rc/redirect.go
Loggable redirects.

@item rc/mime.go, rc/mime/*
Predefined @code{Content-Type} entries. Each file in @file{rc/mime/*}
has tab-separated format: file's extension, media type and optional
@code{c} mark, meaning that these type can be transparently compressed
on-the-fly.

@end table