s3-share/internal/web/web.go
2022-05-10 22:37:30 +02:00

136 lines
3.2 KiB
Go

package web
import (
"encoding/json"
"io"
"net/http"
"strconv"
"git.kapelle.org/niklas/s3share/internal/client"
"git.kapelle.org/niklas/s3share/internal/types"
"github.com/gorilla/mux"
"github.com/sirupsen/logrus"
)
type createShare struct {
Key string `json:"key"`
}
type deleteShare struct {
Slug string `json:"slug"`
}
func StartWebserver(addr string, client client.Client) error {
r := mux.NewRouter()
r.HandleFunc("/{slug:[a-zA-Z0-9]{6}}", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "./public/index.html")
})
r.HandleFunc("/s/{slug:[a-zA-Z0-9]{6}}", func(w http.ResponseWriter, r *http.Request) {
share := getShareHead(client, w, r)
if share == nil {
return
}
obj, err := client.GetObjectFromShare(r.Context(), share)
if err != nil {
logrus.Error(err.Error())
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
_, err = io.Copy(w, obj)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
})
r.HandleFunc("/s/{slug:[a-zA-Z0-9]{6}}", func(w http.ResponseWriter, r *http.Request) {
getShareHead(client, w, r)
}).Methods("HEAD")
r.HandleFunc("/api/share", func(w http.ResponseWriter, r *http.Request) {
}).Methods("GET")
r.HandleFunc("/api/share", func(w http.ResponseWriter, r *http.Request) {
// TODO: check auth
var shareParams createShare
err := json.NewDecoder(r.Body).Decode(&shareParams)
if err != nil {
logrus.Error(err.Error())
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
share, err := client.CreateShare(r.Context(), shareParams.Key)
if err != nil {
logrus.Error(err.Error())
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(share)
}).Methods("POST")
r.HandleFunc("/api/share", func(w http.ResponseWriter, r *http.Request) {
//TODO: check auth
var shareParams deleteShare
err := json.NewDecoder(r.Body).Decode(&shareParams)
if err != nil {
logrus.Error(err.Error())
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
err = client.DeleteShare(r.Context(), shareParams.Slug)
if err != nil {
logrus.Error(err.Error())
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}).Methods("DELETE")
r.PathPrefix("/").Handler(http.FileServer(http.Dir("./public/")))
logrus.Info("Starting webserver")
return http.ListenAndServe(addr, r)
}
func getShareHead(client client.Client, w http.ResponseWriter, r *http.Request) *types.Share {
vars := mux.Vars(r)
share, err := client.GetShare(r.Context(), vars["slug"])
if err != nil {
logrus.Error(err.Error())
http.Error(w, err.Error(), http.StatusInternalServerError)
return nil
}
if share == nil {
http.NotFound(w, r)
return nil
}
metadata, err := client.GetObjectMetadata(r.Context(), share.Key)
if err != nil {
logrus.Error(err.Error())
http.Error(w, err.Error(), http.StatusInternalServerError)
return nil
}
w.Header().Set("Content-Type", metadata.ContentType)
w.Header().Set("Content-Length", strconv.FormatInt(metadata.Size, 10))
w.Header().Set("Content-Disposition", "attachment; filename=\""+metadata.Filename+"\"")
return share
}