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package http
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"github.com/gorilla/mux"
"github.com/MichaelMure/git-bug/api/auth"
"github.com/MichaelMure/git-bug/cache"
)
// implement a http.Handler that will accept and store content into git blob.
//
// Expected gorilla/mux parameters:
// - "repo" : the ref of the repo or "" for the default one
type gitUploadFileHandler struct {
mrc *cache.MultiRepoCache
}
func NewGitUploadFileHandler(mrc *cache.MultiRepoCache) http.Handler {
return &gitUploadFileHandler{mrc: mrc}
}
func (gufh *gitUploadFileHandler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
var repo *cache.RepoCache
var err error
repoVar := mux.Vars(r)["repo"]
switch repoVar {
case "":
repo, err = gufh.mrc.DefaultRepo()
default:
repo, err = gufh.mrc.ResolveRepo(repoVar)
}
if err != nil {
http.Error(rw, "invalid repo reference", http.StatusBadRequest)
return
}
_, err = auth.UserFromCtx(r.Context(), repo)
if err == auth.ErrNotAuthenticated {
http.Error(rw, "read-only mode or not logged in", http.StatusForbidden)
return
} else if err != nil {
http.Error(rw, fmt.Sprintf("loading identity: %v", err), http.StatusInternalServerError)
return
}
// 100MB (github limit)
var maxUploadSize int64 = 100 * 1000 * 1000
r.Body = http.MaxBytesReader(rw, r.Body, maxUploadSize)
if err := r.ParseMultipartForm(maxUploadSize); err != nil {
http.Error(rw, "file too big (100MB max)", http.StatusBadRequest)
return
}
file, _, err := r.FormFile("uploadfile")
if err != nil {
http.Error(rw, "invalid file", http.StatusBadRequest)
return
}
defer file.Close()
fileBytes, err := ioutil.ReadAll(file)
if err != nil {
http.Error(rw, "invalid file", http.StatusBadRequest)
return
}
filetype := http.DetectContentType(fileBytes)
if filetype != "image/jpeg" && filetype != "image/jpg" &&
filetype != "image/gif" && filetype != "image/png" {
http.Error(rw, "invalid file type", http.StatusBadRequest)
return
}
hash, err := repo.StoreData(fileBytes)
if err != nil {
http.Error(rw, err.Error(), http.StatusInternalServerError)
return
}
type response struct {
Hash string `json:"hash"`
}
resp := response{Hash: string(hash)}
js, err := json.Marshal(resp)
if err != nil {
http.Error(rw, err.Error(), http.StatusInternalServerError)
return
}
rw.Header().Set("Content-Type", "application/json")
_, err = rw.Write(js)
if err != nil {
http.Error(rw, err.Error(), http.StatusInternalServerError)
return
}
}
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