drone/internal/router/git.go

84 lines
2.9 KiB
Go

// Copyright 2022 Harness Inc. All rights reserved.
// Use of this source code is governed by the Polyform Free Trial License
// that can be found in the LICENSE.md file for this repository.
package router
import (
"fmt"
"net/http"
"github.com/harness/gitness/gitrpc"
handlerrepo "github.com/harness/gitness/internal/api/handler/repo"
middlewareauthn "github.com/harness/gitness/internal/api/middleware/authn"
"github.com/harness/gitness/internal/api/middleware/encode"
"github.com/harness/gitness/internal/api/middleware/logging"
"github.com/harness/gitness/internal/api/request"
"github.com/harness/gitness/internal/auth/authn"
"github.com/harness/gitness/internal/auth/authz"
"github.com/harness/gitness/internal/store"
"github.com/harness/gitness/internal/url"
"github.com/harness/gitness/types"
"github.com/go-chi/chi"
"github.com/go-chi/chi/middleware"
"github.com/rs/zerolog/hlog"
)
// GitHandler is an abstraction of an http handler that handles git calls.
type GitHandler interface {
http.Handler
}
// NewGitHandler returns a new GitHandler.
func NewGitHandler(
config *types.Config,
urlProvider *url.Provider,
repoStore store.RepoStore,
authenticator authn.Authenticator,
authorizer authz.Authorizer,
client gitrpc.Interface,
) GitHandler {
// Use go-chi router for inner routing.
r := chi.NewRouter()
// Apply common api middleware.
r.Use(middleware.NoCache)
r.Use(middleware.Recoverer)
// configure logging middleware.
r.Use(hlog.URLHandler("http.url"))
r.Use(hlog.MethodHandler("http.method"))
r.Use(logging.HLogRequestIDHandler())
r.Use(logging.HLogAccessLogHandler())
r.Route(fmt.Sprintf("/{%s}", request.PathParamRepoRef), func(r chi.Router) {
r.Use(middlewareauthn.Attempt(authenticator))
// smart protocol
r.Handle("/git-upload-pack", handlerrepo.GetUploadPack(client, urlProvider, repoStore, authorizer))
r.Post("/git-receive-pack", handlerrepo.PostReceivePack(client, urlProvider, repoStore, authorizer))
r.Get("/info/refs", handlerrepo.GetInfoRefs(client, repoStore, authorizer))
// dumb protocol
r.Get("/HEAD", stubGitHandler(repoStore))
r.Get("/objects/info/alternates", stubGitHandler(repoStore))
r.Get("/objects/info/http-alternates", stubGitHandler(repoStore))
r.Get("/objects/info/packs", stubGitHandler(repoStore))
r.Get("/objects/info/{file:[^/]*}", stubGitHandler(repoStore))
r.Get("/objects/{head:[0-9a-f]{2}}/{hash:[0-9a-f]{38}}", stubGitHandler(repoStore))
r.Get("/objects/pack/pack-{file:[0-9a-f]{40}}.pack", stubGitHandler(repoStore))
r.Get("/objects/pack/pack-{file:[0-9a-f]{40}}.idx", stubGitHandler(repoStore))
})
// wrap router in git path encoder.
return encode.GitPathBefore(r)
}
func stubGitHandler(repoStore store.RepoStore) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write([]byte("Seems like an asteroid destroyed the ancient git protocol"))
w.WriteHeader(http.StatusBadGateway)
}
}