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package main
import (
"embed"
"net/http"
"os"
"os/signal"
"strings"
_ "github.com/a-h/templ"
"github.com/fiatjaf/eventstore"
"github.com/fiatjaf/eventstore/badger"
"github.com/fiatjaf/khatru"
"github.com/kelseyhightower/envconfig"
"github.com/nbd-wtf/go-nostr/nip19"
"github.com/nbd-wtf/go-nostr/sdk"
"github.com/rs/cors"
"github.com/rs/zerolog"
)
type Settings struct {
Domain string `envconfig:"DOMAIN" required:"true"`
Port string `envconfig:"PORT" default:"8484"`
OwnerPublicKey string `envconfig:"OWNER_PUBLIC_KEY" required:"true"`
RepositoryDir string `envconfig:"REPOSITORY_DIR" default:"repos"`
RelayDatabasePath string `envconfig:"RELAY_DATABASE_PATH" default:"events"`
SiteTitle string `envconfig:"SITE_TITLE" default:"my git repositories"`
SecureSchemeLetterS string `envconfig:"-"`
}
//go:embed static/*
var static embed.FS
var (
s Settings
db eventstore.Store
log = zerolog.New(os.Stderr).Output(zerolog.ConsoleWriter{Out: os.Stdout}).With().Timestamp().Logger()
sys *sdk.System
)
func main() {
err := envconfig.Process("", &s)
if err != nil {
log.Fatal().Err(err).Msg("couldn't process envconfig")
return
}
if prefix, data, err := nip19.Decode(s.OwnerPublicKey); err == nil {
if prefix != "npub" {
log.Fatal().Msgf("invalid OWNER_PUBLIC_KEY: '%s' -- must be npub or hex", s.OwnerPublicKey)
return
}
s.OwnerPublicKey = data.(string)
}
if !strings.Contains(s.Domain, "localhost") {
s.SecureSchemeLetterS = "s"
}
// initialize relay and relay store
db = &badger.BadgerBackend{Path: s.RelayDatabasePath}
if err := db.Init(); err != nil {
log.Fatal().Err(err).Msg("failed to initialize badger db")
return
}
defer db.Close()
relay := khatru.NewRelay()
relay.StoreEvent = append(relay.StoreEvent, db.SaveEvent)
relay.DeleteEvent = append(relay.DeleteEvent, db.DeleteEvent)
relay.QueryEvents = append(relay.QueryEvents, db.QueryEvents)
relay.RejectEvent = append(relay.RejectEvent, rejectEvents)
relay.OnEventSaved = append(relay.OnEventSaved, fetchSubmitterMetadata)
mux := relay.Router()
// nostr sdk
sys = sdk.NewSystem(
sdk.WithStore(db),
)
defer sys.Close()
// initialize git repos directory
if err := setupGitReposDirectory(); err != nil {
log.Fatal().Err(err).Msg("failed to setup git server")
return
}
// routes
mux.Handle("/static/", http.FileServer(http.FS(static)))
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
log.Info().Str("method", r.Method).Str("url", r.URL.String()).Msg("request")
r.URL.Path = reSlashDedup.ReplaceAllString(r.URL.Path, "/")
if r.URL.Path == "/" {
serveHome(w, r)
return
}
spl := strings.Split(r.URL.Path, "/")
repo := spl[1]
if ascii.MatchString(spl[1]) == false {
log.Warn().Str("name", spl[1]).Msg("received a request for an invalid repo")
http.Error(w, "invalid repo name", 403)
return
}
if r.URL.Query().Get("go-get") == "1" {
serveGoGet(w, r, repo)
return
}
if len(spl) == 4 && spl[2] == "info" && spl[3] == "refs" {
getInfoRefs(w, r, repo)
return
}
if len(spl) == 3 && (spl[2] == "git-upload-pack" || spl[2] == "git-receive-pack") {
if !repoExists(repo) && spl[2] == "git-upload-pack" {
log.Warn().Msg("trying to pull from a repository that doesn't exist")
http.Error(w, "repository not found", 404)
return
}
postRPC(w, r, repo, spl[2])
return
}
if len(spl) == 2 || (len(spl) == 3 && spl[2] == "") {
serveRepoRoot(w, r, repo)
return
}
if len(spl) >= 4 && spl[2] == "+" {
// repo at a specific tag and possibly specifying a filepath
tag := spl[3]
if len(spl) == 6 && spl[4] == "~" {
// in this case it specifies a patch to be visualized
patchId := spl[5]
servePatch(w, r, repo, tag, patchId)
return
}
// but in this case it is the repo at a specific tag
if len(spl) == 4 {
serveTag(w, r, repo, tag)
return
}
// and in this case it is the repo at a specific tag with a file path
serveFileOrTree(w, r, repo, tag, spl[4:])
return
}
if len(spl) == 3 && spl[2] == "!" {
// this is a call announcing the repo -- we should just return the <aside> thing
handleAnnounce(w, r, repo, "HEAD")
return
}
})
// start
log.Print("listening at http://0.0.0.0:" + s.Port)
server := &http.Server{Addr: "0.0.0.0:" + s.Port, Handler: cors.AllowAll().Handler(relay)}
go func() {
if err := server.ListenAndServe(); err != nil {
log.Error().Err(err).Msg("")
}
}()
sc := make(chan os.Signal, 1)
signal.Notify(sc, os.Interrupt)
<-sc
server.Close()
}
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