drone/internal/router/git.go

104 lines
3.2 KiB
Go

package router
import (
"fmt"
"net/http"
"github.com/harness/gitness/internal/api/guard"
"github.com/harness/gitness/internal/api/middleware/accesslog"
middleware_authn "github.com/harness/gitness/internal/api/middleware/authn"
"github.com/harness/gitness/internal/api/middleware/encode"
"github.com/harness/gitness/internal/api/middleware/repo"
"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/types/enum"
"github.com/go-chi/chi"
"github.com/go-chi/chi/middleware"
"github.com/rs/zerolog/hlog"
"github.com/rs/zerolog/log"
)
/*
* Mounts the GIT Router under mountPath.
* The handler is wrapped within a layer that handles encoding Paths.
*/
func newGitHandler(
mountPath string,
_ store.SystemStore,
_ store.UserStore,
_ store.SpaceStore,
repoStore store.RepoStore,
authenticator authn.Authenticator,
authorizer authz.Authorizer) http.Handler {
guard := guard.New(authorizer)
// Use go-chi router for inner routing (restricted to mountPath!)
r := chi.NewRouter()
r.Route(mountPath, func(r chi.Router) {
// Apply common api middleware
r.Use(middleware.NoCache)
r.Use(middleware.Recoverer)
// configure logging middleware.
r.Use(hlog.NewHandler(log.Logger))
r.Use(hlog.URLHandler("path"))
r.Use(hlog.MethodHandler("method"))
r.Use(hlog.RequestIDHandler("request", "Request-Id"))
r.Use(accesslog.HlogHandler())
// for now always attempt auth - enforced per operation
r.Use(middleware_authn.Attempt(authenticator))
r.Route(fmt.Sprintf("/{%s}", request.RepoRefParamName), func(r chi.Router) {
// resolves the repo and stores in the context
r.Use(repo.Required(repoStore))
// Write operations (need auth)
r.Group(func(r chi.Router) {
// TODO: specific permission for pushing code?
r.Use(guard.ForRepo(enum.PermissionRepoEdit, false))
r.Handle("/git-upload-pack", http.HandlerFunc(stubGitHandler))
})
// Read operations (only need of it not public)
r.Group(func(r chi.Router) {
// middlewares
r.Use(guard.ForRepo(enum.PermissionRepoView, true))
// handlers
r.Post("/git-receive-pack", stubGitHandler)
r.Get("/info/refs", stubGitHandler)
r.Get("/HEAD", stubGitHandler)
r.Get("/objects/info/alternates", stubGitHandler)
r.Get("/objects/info/http-alternates", stubGitHandler)
r.Get("/objects/info/packs", stubGitHandler)
r.Get("/objects/info/{file:[^/]*}", stubGitHandler)
r.Get("/objects/{head:[0-9a-f]{2}}/{hash:[0-9a-f]{38}}", stubGitHandler)
r.Get("/objects/pack/pack-{file:[0-9a-f]{40}}.pack", stubGitHandler)
r.Get("/objects/pack/pack-{file:[0-9a-f]{40}}.idx", stubGitHandler)
})
})
})
return encode.GitPathBefore(r.ServeHTTP)
}
func stubGitHandler(w http.ResponseWriter, r *http.Request) {
rep, _ := request.RepoFrom(r.Context())
w.WriteHeader(http.StatusTeapot)
_, _ = w.Write([]byte(fmt.Sprintf(
"Oooops, seems you hit a major construction site ... \n"+
" Repo: '%s' (%s)\n"+
" Method: '%s'\n"+
" Path: '%s'\n"+
" Query: '%s'",
rep.DisplayName, rep.Path,
r.Method,
r.URL.Path,
r.URL.RawQuery,
)))
}