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package static
import (
"github.com/sirupsen/logrus"
"net/http"
"os"
"path"
"strings"
rrttp "github.com/spiral/roadrunner/service/http"
"github.com/spiral/roadrunner/service"
)
// Name contains default service name.
const Name = "static-server"
// Service serves static files. Potentially convert into middleware?
type Service struct {
// Logger is associated debug and error logger. Can be empty.
Logger *logrus.Logger
// server configuration (location, forbidden files and etc)
cfg *Config
// root is initiated http directory
root http.Dir
// let's service stay running
done chan interface{}
}
// Configure must return configure service and return true if service hasStatus enabled. Must return error in case of
// misconfiguration. Services must not be used without proper configuration pushed first.
func (s *Service) Configure(cfg service.Config, c service.Container) (enabled bool, err error) {
config := &Config{}
if err := cfg.Unmarshal(config); err != nil {
return false, err
}
if !config.Enable {
return false, nil
}
if err := config.Valid(); err != nil {
return false, err
}
s.cfg = config
s.root = http.Dir(s.cfg.Dir)
// registering as middleware
if h, ok := c.Get(rrttp.Name); ok >= service.StatusConfigured {
if h, ok := h.(*rrttp.Service); ok {
h.Add(s)
}
} else {
if s.Logger != nil {
s.Logger.Warningf("no http service found")
}
}
return true, nil
}
// Serve serves the service.
func (s *Service) Serve() error {
s.done = make(chan interface{})
<-s.done
return nil
}
// Stop stops the service.
func (s *Service) Stop() {
//todo: this is not safe (TODO CHECK IT?)
close(s.done)
}
// Handle must return true if request/response pair is handled withing the middleware.
func (s *Service) Handle(w http.ResponseWriter, r *http.Request) bool {
fPath := r.URL.Path
if !strings.HasPrefix(fPath, "/") {
fPath = "/" + fPath
}
fPath = path.Clean(fPath)
if s.cfg.Forbids(fPath) {
if s.Logger != nil {
s.Logger.Warningf("attempt to access forbidden file %s", fPath)
}
return false
}
f, err := s.root.Open(fPath)
if err != nil {
if !os.IsNotExist(err) {
if s.Logger != nil {
s.Logger.Error(err)
}
}
return false
}
defer f.Close()
d, err := f.Stat()
if err != nil {
if s.Logger != nil {
s.Logger.Error(err)
}
return false
}
// do not Handle directories
if d.IsDir() {
return false
}
http.ServeContent(w, r, d.Name(), d.ModTime(), f)
return true
}
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